CA2433600A1 - Resource allocation to terrestrial and satellite services - Google Patents
Resource allocation to terrestrial and satellite services Download PDFInfo
- Publication number
- CA2433600A1 CA2433600A1 CA002433600A CA2433600A CA2433600A1 CA 2433600 A1 CA2433600 A1 CA 2433600A1 CA 002433600 A CA002433600 A CA 002433600A CA 2433600 A CA2433600 A CA 2433600A CA 2433600 A1 CA2433600 A1 CA 2433600A1
- Authority
- CA
- Canada
- Prior art keywords
- satellite
- users
- terrestrial
- satellite system
- per user
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
- H04B7/18563—Arrangements for interconnecting multiple systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/042—Public Land Mobile systems, e.g. cellular systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/06—Airborne or Satellite Networks
Abstract
There is provided a method for improving an allocation of resources, i.e., frequency and power, to terrestrial services and satellite services that use a same frequency band. The method includes determining a demand (D S) for a resource by users of a satellite system, determining a demand (D T) for the resource by users of a terrestrial system, and allocating the resource between the satellite system and the terrestrial system based on a ratio of D S to D T.
Description
RESOURCE ALL~CATION
T~ TERRESTRIAL ANIa SATELLITE SERVICES
CROSS REFERENCE T~ RELATED APPLICATIONS
The present application is claiming priority of IJ.S. Provisional Patent Application Serial No. 60/391,997, bled on 3une 27, 2002.
BACKGROUND OF THE INVENTION
to 1. Field of the invention The present invention relates an allocation of resources, i.e., frequency and power, to terrestrial services and satellite services that use a same frequency band.
T~ TERRESTRIAL ANIa SATELLITE SERVICES
CROSS REFERENCE T~ RELATED APPLICATIONS
The present application is claiming priority of IJ.S. Provisional Patent Application Serial No. 60/391,997, bled on 3une 27, 2002.
BACKGROUND OF THE INVENTION
to 1. Field of the invention The present invention relates an allocation of resources, i.e., frequency and power, to terrestrial services and satellite services that use a same frequency band.
2. Description of the Prior Art A satellite radio service is a cammunication service in which a user employs a device that is in direct radio frequency (RF) communication with a satellite.
2o Typically, the satellite is also in communication with a terrestrial system known as an earth station or gateway, which is, in turn, coupled to a public service telephone network (PSTN). Satellite TV service and mobile satellite service are examples of satellite radio services.
A terrestrial radio service is a communication service in which a user employs a device that is in direct ItF communication with a terrestrial base station (TBS). Conventional cellular telephone service is an example of a terrestrial radio service.
3o Satellite radio services and terrestrial radio services currently use frequencies in two ways:
(i) They use separate frequency bands. This means that the satellite radio services use a specific frequency band and the terrestrial radio service uses a different frequency band (ii) When the terrestrial services use directive antennas, i.e., antennas that point the transmitted energy in a particular direction, the terrestrial service and the satellite service can use the same frequency. This can be done because the directive antennas used terrestrially put the energy at law elevation angles, i.e., along the horizon, to another directive antenna. Accordingly, the amount of energy transmitted towards a satellite in space is small, and does l0 not ordinarily interfere with the satellite service. The satellite service has imposed on it a power flux density limit and the limit usually varies with elevation angle. At low elevation angles, the amount of power that-satellite can radiate is small. At high elevation angles, the amount of energy is Larger. in this way, a satellite transmission does not interfere with the terrestrial transmission.
When the terrestrial service uses an omni-directional antenna, e.g., an antenna that transmits energy over a hemisphere, terrestrial and satellite services cannot share the same frequency bands because the two services would be prone 2o to interfere with one another. For example, satellites do not use the same frequencies as are used with cellular services because a cellular handset has an omni type antenna.
There are four interference scenarios when satellite and terrestrial use the same frequency, particularly when the terrestrial service is mobile.
The first interference scenario is where a ground based satellite transmitter, i.e., a handset transmitting to a satellite, interferes with a receiving TBS, e.g., a cell tower. The second interference scenario is where a transmitting TBS
3o interferes with a ground-based satellite receiver, e.g., a handset receiving from a satellite. One technique for avoiding these two types of interference is for the ground based satellite unit, e.g., the handset, to not use the same frequency as the TBS when the ground-based satellite unit is in an area near the T'BS. For cellular and like services, this area is typically regarded as being within a radius of I to 7 kilometers from the TBS.
The third interference scenario is a satellite transmitter, in space, interfering with a terrestrial unit, e.g., a handset receiving a transmission from a TBS.
A
technique for avoiding this form of interference is to use a power flux density limit on the satellite.
1o The fourth interference scenario is a transmission from a terrestrial unit, e.g., a handset transmitting to a TBS, interfering with a satellite receiver in space.
The satellite receiver could receive each terrestrial unit's transnussion, especially if the terrestrial unit is using an omni-type antenna.
is The satellite beam covers an area of the Earth's surface, typically 1000 to 1,000,000 square miles, but the area could be larger. In comparison a TBS beam covers a relatively srnailer area of 1 to 60 square miles. However, if the TBS
is located in the area covered by the beam of the satellite, then when the TBS
uses a particulax frequency, the satellite is denied from using that frequency in the full 2o area covered by the satellite beam. So, for example, although the TBS
covers an area of only 1 to 60 square miles, the satellite service is denied use of the frequency in an area of 1000 to 1,000,000 square miles.
SUMMARY OF THE INVENTION
There is provided a system and method for improving an allocation of resources, i.e., frequency and power, to terrestrial services and satellite services that use a same frequency band.
A method for allocating resources includes determining a demand (Ds) for a resource by users of a satellite system, determining a demand (DT) for the resource by users of a terrestrial system, and allocating the resource between the satellite system and the terrestrial system based on a ratio of Ds to DT.
Another method for allocating resouxces includes determining a ratio N S x PS
N T X PT
where:
NS = a number of users of a satellite system, Ps - power per user of the satellite system, NT = a number of users of a terrestrial system, and to PT = power per user of the terrestrial system.
The method continues by allocating radio frequency (RF) power between the satellite system and the terrestrial system based on the ratio.
Another method for allocating resources includes (a) determining a number of users of a terrestrial system located in a beam of a satellite and using a frequency band in the beam, and (b) denying the satellite use of the frequency band in the beam if the number of users is greater than a threshold number.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a functional illustration of a communications system that includes a satellite radio service system and a terrestrial radio service system.
FIG. 2 is a map of the continental United States showing an example of ATC frequency interference zones in a communications system where satellite service is provided by a constellation of non-geosynchronous satellites.
FIG. 3 is a map, similar to that of FIG. 2, showing ATC frequency interference zones for a time one day later than that of FIG. 2.
2o Typically, the satellite is also in communication with a terrestrial system known as an earth station or gateway, which is, in turn, coupled to a public service telephone network (PSTN). Satellite TV service and mobile satellite service are examples of satellite radio services.
A terrestrial radio service is a communication service in which a user employs a device that is in direct ItF communication with a terrestrial base station (TBS). Conventional cellular telephone service is an example of a terrestrial radio service.
3o Satellite radio services and terrestrial radio services currently use frequencies in two ways:
(i) They use separate frequency bands. This means that the satellite radio services use a specific frequency band and the terrestrial radio service uses a different frequency band (ii) When the terrestrial services use directive antennas, i.e., antennas that point the transmitted energy in a particular direction, the terrestrial service and the satellite service can use the same frequency. This can be done because the directive antennas used terrestrially put the energy at law elevation angles, i.e., along the horizon, to another directive antenna. Accordingly, the amount of energy transmitted towards a satellite in space is small, and does l0 not ordinarily interfere with the satellite service. The satellite service has imposed on it a power flux density limit and the limit usually varies with elevation angle. At low elevation angles, the amount of power that-satellite can radiate is small. At high elevation angles, the amount of energy is Larger. in this way, a satellite transmission does not interfere with the terrestrial transmission.
When the terrestrial service uses an omni-directional antenna, e.g., an antenna that transmits energy over a hemisphere, terrestrial and satellite services cannot share the same frequency bands because the two services would be prone 2o to interfere with one another. For example, satellites do not use the same frequencies as are used with cellular services because a cellular handset has an omni type antenna.
There are four interference scenarios when satellite and terrestrial use the same frequency, particularly when the terrestrial service is mobile.
The first interference scenario is where a ground based satellite transmitter, i.e., a handset transmitting to a satellite, interferes with a receiving TBS, e.g., a cell tower. The second interference scenario is where a transmitting TBS
3o interferes with a ground-based satellite receiver, e.g., a handset receiving from a satellite. One technique for avoiding these two types of interference is for the ground based satellite unit, e.g., the handset, to not use the same frequency as the TBS when the ground-based satellite unit is in an area near the T'BS. For cellular and like services, this area is typically regarded as being within a radius of I to 7 kilometers from the TBS.
The third interference scenario is a satellite transmitter, in space, interfering with a terrestrial unit, e.g., a handset receiving a transmission from a TBS.
A
technique for avoiding this form of interference is to use a power flux density limit on the satellite.
1o The fourth interference scenario is a transmission from a terrestrial unit, e.g., a handset transmitting to a TBS, interfering with a satellite receiver in space.
The satellite receiver could receive each terrestrial unit's transnussion, especially if the terrestrial unit is using an omni-type antenna.
is The satellite beam covers an area of the Earth's surface, typically 1000 to 1,000,000 square miles, but the area could be larger. In comparison a TBS beam covers a relatively srnailer area of 1 to 60 square miles. However, if the TBS
is located in the area covered by the beam of the satellite, then when the TBS
uses a particulax frequency, the satellite is denied from using that frequency in the full 2o area covered by the satellite beam. So, for example, although the TBS
covers an area of only 1 to 60 square miles, the satellite service is denied use of the frequency in an area of 1000 to 1,000,000 square miles.
SUMMARY OF THE INVENTION
There is provided a system and method for improving an allocation of resources, i.e., frequency and power, to terrestrial services and satellite services that use a same frequency band.
A method for allocating resources includes determining a demand (Ds) for a resource by users of a satellite system, determining a demand (DT) for the resource by users of a terrestrial system, and allocating the resource between the satellite system and the terrestrial system based on a ratio of Ds to DT.
Another method for allocating resouxces includes determining a ratio N S x PS
N T X PT
where:
NS = a number of users of a satellite system, Ps - power per user of the satellite system, NT = a number of users of a terrestrial system, and to PT = power per user of the terrestrial system.
The method continues by allocating radio frequency (RF) power between the satellite system and the terrestrial system based on the ratio.
Another method for allocating resources includes (a) determining a number of users of a terrestrial system located in a beam of a satellite and using a frequency band in the beam, and (b) denying the satellite use of the frequency band in the beam if the number of users is greater than a threshold number.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a functional illustration of a communications system that includes a satellite radio service system and a terrestrial radio service system.
FIG. 2 is a map of the continental United States showing an example of ATC frequency interference zones in a communications system where satellite service is provided by a constellation of non-geosynchronous satellites.
FIG. 3 is a map, similar to that of FIG. 2, showing ATC frequency interference zones for a time one day later than that of FIG. 2.
FIG. 4 is a map, similar to that of FIG. 2, showing an example of dynamic frequency assignments.
FIG. 5 is a map, similar to that of FIG. 4, showing dynamic frequency assignments at a time six minutes later than that of FIG. 4.
DESCRIPTION OF THE INVENTION
FIG. 1 is a functional illustration of a communications system 100 that to includes a satellite radio service system (hereinafter "the satellite system's and a terrestrial radio service system (hereinafter "the terrestrial system"). The satellite system includes a handset 105, a satellite 120 and a gateway 160. The terrestrial system includes a cell phone 125 and a cellular tower 145.
Satellite 120 has an antenna with a propagation pattern, also know as a footprint, such that a beam 1 I5 from satellite 120 covers handset 105.
Another beam I22, usually in a different frequency band, covers gateway 160. I-Iandset 105 can be a transmitter, a receiver or a transceiver. Via an RF link 110 within beam 1 I5, handset 105 is in direct RF communication with satellite 120, and via 2o an RF link t 50, satellite 120 is in communication with gateway I60.
Cell phone 125 has a non-directional antenna, i.e., omni-directional antenna 130. Through omni-directional antenna 130, and via an RF link 140 in a beam (not shown) of cellular tower I45, cell phone 125 is in direct RF
communication with cellular tower 145.
Each of gateway 160 and cellular tower 145 are in further communication with a public service telephone network (PSTN) 155. 'Thus, a user of handset and a user of cell phone 125 may conduct a telephone call with one another 3o through communications system L00.
FIG. 5 is a map, similar to that of FIG. 4, showing dynamic frequency assignments at a time six minutes later than that of FIG. 4.
DESCRIPTION OF THE INVENTION
FIG. 1 is a functional illustration of a communications system 100 that to includes a satellite radio service system (hereinafter "the satellite system's and a terrestrial radio service system (hereinafter "the terrestrial system"). The satellite system includes a handset 105, a satellite 120 and a gateway 160. The terrestrial system includes a cell phone 125 and a cellular tower 145.
Satellite 120 has an antenna with a propagation pattern, also know as a footprint, such that a beam 1 I5 from satellite 120 covers handset 105.
Another beam I22, usually in a different frequency band, covers gateway 160. I-Iandset 105 can be a transmitter, a receiver or a transceiver. Via an RF link 110 within beam 1 I5, handset 105 is in direct RF communication with satellite 120, and via 2o an RF link t 50, satellite 120 is in communication with gateway I60.
Cell phone 125 has a non-directional antenna, i.e., omni-directional antenna 130. Through omni-directional antenna 130, and via an RF link 140 in a beam (not shown) of cellular tower I45, cell phone 125 is in direct RF
communication with cellular tower 145.
Each of gateway 160 and cellular tower 145 are in further communication with a public service telephone network (PSTN) 155. 'Thus, a user of handset and a user of cell phone 125 may conduct a telephone call with one another 3o through communications system L00.
Communications system 100 also includes a processor 165 that further includes a module 175 that controls processor 165 to perform the methods described herein. Processor 165 may be configured as a special purpose processor, i.e., configured exclusively for use in communications system 100.
As such, module 175 may also be implemented in hardware, as a circuit or a plurality of sub-circuits, for example, as a digital signal processor, a configuration of programmable components, or a configuration of discrete components specifically designed to provide functionality of module 175.
Alternatively, processor 165 may be implemented on a general purpose microcomputer, such as one of the members of the SunTM Microsystems family of computer systems, one ~f the members of the IBMTM Personal Computer family, or any conventional work-station or graphics computer device. Although processor 165 is represented herein as a standalone processor, it is not limited to such, but instead can be coupled to other processors or computer systems (not shown).
Module 175, as an alternative to being implemented in hardware, may be implemented in software and installed in a memory device, e.g., a random access memory (R.AM) or a disk memory, associated with processor I65. ~Jhile module 175 is indicated as already loaded into processor 165, it nay be configured on a storage media 170 for subsequent loading into processor 165. Storage media 170 can be any conventional storage media such as a magnetic tape, an optical storage media, a compact disk, or a floppy disk. Alternatively, storage media 170 can be a random access memory, or other type of electronic stoxage, located on a remote storage system.
Module 175, whether being implemented in hardware or software, may itself be configured as one or more subordinate modules. For example, in the software implementation, module I 75 may be configured as a plurality of routines and sub-routines.
As such, module 175 may also be implemented in hardware, as a circuit or a plurality of sub-circuits, for example, as a digital signal processor, a configuration of programmable components, or a configuration of discrete components specifically designed to provide functionality of module 175.
Alternatively, processor 165 may be implemented on a general purpose microcomputer, such as one of the members of the SunTM Microsystems family of computer systems, one ~f the members of the IBMTM Personal Computer family, or any conventional work-station or graphics computer device. Although processor 165 is represented herein as a standalone processor, it is not limited to such, but instead can be coupled to other processors or computer systems (not shown).
Module 175, as an alternative to being implemented in hardware, may be implemented in software and installed in a memory device, e.g., a random access memory (R.AM) or a disk memory, associated with processor I65. ~Jhile module 175 is indicated as already loaded into processor 165, it nay be configured on a storage media 170 for subsequent loading into processor 165. Storage media 170 can be any conventional storage media such as a magnetic tape, an optical storage media, a compact disk, or a floppy disk. Alternatively, storage media 170 can be a random access memory, or other type of electronic stoxage, located on a remote storage system.
Module 175, whether being implemented in hardware or software, may itself be configured as one or more subordinate modules. For example, in the software implementation, module I 75 may be configured as a plurality of routines and sub-routines.
In FIG. I, processor l 65 is shown as being coupled to gateway 160. I3owever, a processor such as processor 165 is capable of allocating resources to TBSs, gateways and satellites in a large geographic area, such as a continents Therefore, the processor will typically be connected to one or more TBSs and one of more gateways, and therefore the satellites, in this large area. The processor can be located anywhere as long as it is connected to the TBSs and the gateways in its area of resource allocation. For example, the processor could be at a central control center or co-located at a gateway or co-located at a TBS.
to Satellite 120 may be a member of a constellation of non-geosynchronous satellites. In such a constellation satellite 120, and consequently beam I 15, moves with respect to the surface of the Earth, and eventually beam 115 moves so that it does not cover handset 105. However, ordinarily, another satellite (not shown) in the constellation will move into range and have a beam that covers handset 105.
Beam 115 is shown in FIG. 1 as also covering cell phone 125 Consequently, operations of cell phone 12S and satellite 120 may interfere with one another via an RF link 135. Note that RF link 135 is not a desired or intended link of communication between cell phone 125 and satellite 120, but instead represents RF interference between cell phone 125 and satellite 120.
Assuming that handset 105 includes a. transmitter, it will transmit an RF
signal at some power level. Similarly, cell phone 125 transmits at some ItF
power level. In practice, communications system 100 would have a plurality of handsets 105 and a plurality of cell phones 125 operating at any given time.
'Theoretically, beam 115 may receive some RF power from each of the plurality of handsets 105 and the plurality of cell phones 125.
3o Ordinarily, beam 115 cannot operate properly if the curr~ulative RF power in the same frequency band from the plurality of handsets 105 and the plurality of cell phones 125 exceeds some predetermined threshold, Thus, a total level of RF
to Satellite 120 may be a member of a constellation of non-geosynchronous satellites. In such a constellation satellite 120, and consequently beam I 15, moves with respect to the surface of the Earth, and eventually beam 115 moves so that it does not cover handset 105. However, ordinarily, another satellite (not shown) in the constellation will move into range and have a beam that covers handset 105.
Beam 115 is shown in FIG. 1 as also covering cell phone 125 Consequently, operations of cell phone 12S and satellite 120 may interfere with one another via an RF link 135. Note that RF link 135 is not a desired or intended link of communication between cell phone 125 and satellite 120, but instead represents RF interference between cell phone 125 and satellite 120.
Assuming that handset 105 includes a. transmitter, it will transmit an RF
signal at some power level. Similarly, cell phone 125 transmits at some ItF
power level. In practice, communications system 100 would have a plurality of handsets 105 and a plurality of cell phones 125 operating at any given time.
'Theoretically, beam 115 may receive some RF power from each of the plurality of handsets 105 and the plurality of cell phones 125.
3o Ordinarily, beam 115 cannot operate properly if the curr~ulative RF power in the same frequency band from the plurality of handsets 105 and the plurality of cell phones 125 exceeds some predetermined threshold, Thus, a total level of RF
power received by beam 115 in a particular frequency band is limited. As described below, RF power and/or frequency are regarded as resources, and these resources are allocated between the satellite system and the terrestrial system to maximize the efficient utilization of the resources.
In one embodiment, module 175 (a) determines a demand (Ds) for a resource by users of a satellite system, e.g., satellite 120, (b) determines a demand (DT) for the resource by users of a terrestrial system, e.g., cellular tower 145; and (c) allocates the resource between the satellite system and the terrestrial system Iv based on a ratio of Ds to DT. The resource can be either of power and frequency.
A communication system has a particular spectrum or set of spectrum bands that are available for use to it. In mobile communications, spectrum bands are typically 5 MHz to 30MHz wide in the 1 to 3 GHz range. Depending upon the multiple access technique used, the spectrum band is divided into frequency bands. For example, a frequency band of 1.25 MHz supports between 40 and 60 simultaneous users. Therefore, if the communication system has a spectrarn band of 20 MHz, the spectrum band would be divided into 1b frequency bands of 1.25 MHz.
The allocation of frequency is the allocation of these frequency bands to the gateways, and therefore the satellites, and the TBSs. Ifa gateways) and TBS(s) are allocated the same frequency band, then the amount of power (which could be represented by a number of simultaneous users) allowed in that frequency band is allocated between the gateways and TBSs.
For example, assume that there are a number of handsets 105 and a number of cell phones 125 that may potentially use a particular frequency band.
Cansider the ratio:
DT NT X PT
where:
In one embodiment, module 175 (a) determines a demand (Ds) for a resource by users of a satellite system, e.g., satellite 120, (b) determines a demand (DT) for the resource by users of a terrestrial system, e.g., cellular tower 145; and (c) allocates the resource between the satellite system and the terrestrial system Iv based on a ratio of Ds to DT. The resource can be either of power and frequency.
A communication system has a particular spectrum or set of spectrum bands that are available for use to it. In mobile communications, spectrum bands are typically 5 MHz to 30MHz wide in the 1 to 3 GHz range. Depending upon the multiple access technique used, the spectrum band is divided into frequency bands. For example, a frequency band of 1.25 MHz supports between 40 and 60 simultaneous users. Therefore, if the communication system has a spectrarn band of 20 MHz, the spectrum band would be divided into 1b frequency bands of 1.25 MHz.
The allocation of frequency is the allocation of these frequency bands to the gateways, and therefore the satellites, and the TBSs. Ifa gateways) and TBS(s) are allocated the same frequency band, then the amount of power (which could be represented by a number of simultaneous users) allowed in that frequency band is allocated between the gateways and TBSs.
For example, assume that there are a number of handsets 105 and a number of cell phones 125 that may potentially use a particular frequency band.
Cansider the ratio:
DT NT X PT
where:
Ns = number of users of satellite 120, Ps - power per user of satellite 120, NT = number of users of cell tower 145, and PT - power per user of cell tower 145.
'The number of users of satellite 120, e.g., the number of handsets 105, can be either a predicted number of users of satellite 120 or an actual number of users of satellite 120. A suitable representation of the power per user of satellite I20 is an average power per user of satellite 120, e.g., an average power per handset 105.
1o Similarly, the number of users of cell tower I45, e.g., the number of cell phones 125, can be either a predicted number of users of cell tower 145 or an actual number of users of cell tower 145, and a suitable representation of the power per user is the average power per user, e.g., the average power per cell phone 125.
Assume an example with the following parameters:
Ns = 40;
Ps - I watt;
N~r = 250; and P~ - 0.2 watts.
DS - 40 x 1 watt DS - 40 watts DT - 250 x 0.2 watts DT - 50 watts Accordingly, RF power is allocated between satellite 120 and cellular tower 145 based on the ratio:
_D S 40 watts _40 DT -SO watts-50 Thus, RF power will be allocated between satellite i20 and cell tower 145 using a 40/50 ratio. So, for example, if 100 watts of ~F power are available for allocation in the particular frequency band:
power allocated to satellite 120 = ~~ x 100 watts = 44.4 watts ; and power allocated to cell tower 145 = ~~ x 100 watts = 55.6 watts .
Allocating a resource to a system means that the system can use an amount of the resource that is less than or equal to the allocated amount. For example, in tbis example, satellite 120 can use less than or equal to 44.4 watts, and cell tower to 145 can use less than or equal to 55.6 watts.
Using past usage statistics of terrestrial usage and satellite usage as well as a knowledge of a location of cellular tower 145, and predicted movement of beam 115, frequencies can be allocated to satellite 120 and to cellular tower 145 so that 15 the same frequencies can be used simultaneously by both the satellite system and the terrestrial system. Also, by allocating power or a number of simultaneous calls to each of satellite 120 and cellular tower 145, satellite 120 and cellular tower 145 can share the same frequency in a general geographic region, except in portions of that region where beam I 15 overlaps with the beam from cellular 2o tower 145, e.g., the beam containing RF link 140. In addition, by considering any of the near real time data of (1) a current number of simultaneous calls being made terrestrially, (2) a number of simultaneous calls made via satellite 120 andlor (3) the amount of power or interference received by satellite 120, e.g., from RF iink 135, more efficient frequency and power allocations can be made to 25 satellite 120 and cellular tower 145.
If the number of terrestrial users in a frequency band is greater than or equal to some threshold number, then their collective RF energy level appears as noise to satellite 120, and satellite 120 is effectively denied use of the frequency band.
3o Rather than allowing noise and interference to cause a denial of a use of frequency, method I75 evaluates the usage of the frequency by the cell tower and, if appropriate, proactively denies usage of the frequency to satellite I20.
Accordingly, method 175 denies a satellite system use of a frequency band s in a beam of a satellite of the satellite system if a number of users of a terrestrial system located in the beam and using the frequency band is greater than a threshold number. For example, with reference to FIG. l, method 175 denies satellite 120 use of a frequency band in beam 115 if the number of cell phones I25 using the frequency band is greater than (or predicted to be greater than) a threshold number.
Another aspect of method 175 is that it denies a satellite system use of a frequency band in a beam of a satellite of the satellite system if a demand for a resource by users of a terrestrial system located in the beam and using the frequency band is greater than a threshold demand. For example, assume that the resource is RF power and the threshold demand is 80 watts. A suitable representation of the demand for power is found by the product of the number of users of the terrestrial system and the power per user of the terrestrial system, i.e., NT x PT. With reference to FIG. 1, method I75 denies satellite 120 use of a 2o frequency band in beam 115 if NT x 1'T (i.e., of cell phones 125 located in the beam and using the frequency band) is greater than 80 watts.
The allocation of power and frequency are based on ( 1 ) the locations and beam coverages of the TBSs, e.g., cellular tower 145, (2) the predicted satellite beam coverages, e.g., the predicted coverage of beam 115, (3) the predicted satellite call traffic in a particular geographic area, and (4) the predicted terrestrial call traffic in the geographic area. The predicted satellite call traffic and the predicted terrestrial call traffic can be estimated by pass: usage statistics, near real-time statistics relating to the number of simultaneous callers, or satellite received 3o power statistics.
Note that the predictions can vary with time. For example, at 2 AIe~Jf, communications system 100 might not have any handsets 105 being used, and therefore, 100% of an available resource can be allocated to cell tower 14~.
Accordingly, method 175 is also contemplated as repeating the determination of Ds, the determination of DT, and the allocation of the resource after a passage of an interval of time, for example once every hour. Thus, the resource is occasionally or periodically reallocated.
As mentioned earlier, satellite IO may be part of a constellation of non-to geosynchronous satellites. Method 175 is contemplated as repeating the determination of Ds, the determination of DT, and the allocation of the resource after a positional change of the constellation. For example, when satellite moves such that beam 1 I S no longer covers cell tower 145, and as another satellite (not shown) moves in, method I 75 performs a reallocation of the 15 resource.
Beam 115 may cover an area that includes more than one cell tower, that is, with reference to F1G. I, beam l I5 may cover other cell towers (not shown) in addition to cell tower 145. For example, beam 115 may cover Pennsylvania, 2o which includes a cell tower in Pittsburgh and a cell tower in Philadelphia.
Thus, the terrestrial system includes the cell tower in Pittsburgh and the cell tower in Philadelphia. RF power is allocated between the satellite system and the terrestrial system as in the case of the single cell tower 145, but the number of users of the terrestrial system is the total of the number of users of the cell tower 25 in Pittsburgh plus the number of users of the cell tower in Philadelphia.
Also, the amount of power allocated to the terrestrial system is fitrther allocated between Pittsburgh and Philadelphia based on the ratio of the number of users in Pittsburgh and the number of users in Philadelphia.
30 Module I75 allows for the same frequencies to be used by both of satellite 120 and cellular tower 145 with either uni-directional or omni-directional antennas. Module I 75 also allows for mobile terrestrial services, such as cellular telephone, to use the same frequency as mobile satellite services. Although communications system 100 is described herein in the coa~text of a duplex conununication system, the methods employed by module 175 can also be employed for simplex communication, such as a paging system. Module 175 allows for the satellite service to use a frequency that is also used by the terrestrial service in all areas except for an area relatively near, e.g., a radius of 1 to 7 km, to cellular tower 145.
An embodiment of communications system 10 is an integrated mobile satellite service (MSS)/ancillary terrestrial component (ATC) system. In the integrated MSS/ATC system, an operator uses (a) past calling statistics, (b) locations of TBSs, (c) predicted satellite beam coverages, and in near real-time (d) a number of terrestrial and MSS callers within current and upcoming beam coverages, to dynamically allocate MSS and ATC callers communications system 10, thereby maximizing co-channel sharing as desired or required.
For example, an operator using its knowledge of beam coverage by beam l I5 could serve ATC and MSS loads in a single frequency channel by allocating power between the ATC and MSS loads to maximize capacity on the frequency 2o channel at any given time depending upon the geographic distribution of both MSS and ATC call traffic. If required, an integrated MSS/ATC operator can allocate, in real time, a complete frequency channel to ATC in beam 115 with no effect on MSS or ATC capability in any other beam or frequency channel. Again, if required, an integrated MSS/ATC operator can allocate, in real time, all of one frequency channel and part of another frequency channel to ATC in beam 115 with no effect on MSS or ATC capability in any other beam or frequency channel.
Furthermore, an integrated MSS/ATC operator can allocate, in real time, a complete frequency channel in beam 1 l~ and, with loss of MSS capacity in an adjacent beam, serve many more ATC callers. Of course, if required, an integrated MSS/ATC operator could re-allocate frequency channels to MSS in full or in part. Further, the allocation of frequency chamiels would vary from beam to beam and within a beam over time.
Because of overlapping satellite beams, the full MSS spectrum will be available for large geographical areas without regard to how many channels are allocated to ATC. Thus, a single system operator can dynamically allocate different ATC frequencies to ATC sites, thereby allowing even larger geographical areas to be served by the full MSS spectrum.
Simultaneous, near real time knowledge of the traffic volume and interference levels of both ATC and MSS segments as v~rell as the current and 1o predicted near-term locations of all satellite beams enables dynamic resource allocation between MSS and ATC. An. integrated MSSIATC system could use live noise floor measurements from the satellites themselves. Based on these measurements and knowledge of MSS traffic bandwidth requirements, a feedback loop to cellular tower I45 could dynamically allocate frequency channels and 15 traffic volumes, thus maximizing the number of ATC and MSS circuits.
A single code division multiple access (CDMA) operator can manage MSS/ATC shared bandwidth. Frequency re-use and capacity is increased by 50%
relative to band split between ATC and MSS. Tests have shown improvement 2o between.SS% and 58% by beam count. The operator dynamically controls frequency assignments in order to achieve this efficiency.
Employment of a single MSS/ATC system operator allows for gains in efficiency. Additional frequency re-use is achieved when the MSS operator can 25 dynamically assign MSS and ATC frequencies together, for example, up to another 50 % re-use. Frequency allocation algorithms create these efficiencies.
Quality of service also improves with a single MSS/ATC operator.
FICx. 2 is a map of the continental United States showing an example of 3o ATC frequency interference zones in a communications system where satellite service is provided by a constellation of non-geosynchronous satellites. Ten cities and Washington, DC are indicated by dots (~) and are assumed to have ATC
services. A shaded zone 205 indicates regions with normal full-spectrum MSS
beams. Shaded zones 210 indicate regions where worst case frequency interference causes lack of MSS service in ATC frequencies.
FIG. 3 is a map, similar to that of FIG. 2, showing ATC frequency interference zones for a time one day later than that of FIG. 2. With respect to the Earth, the constellation of non-geosynchronous satellites is oriented differently than in FIG. 2. A shaded zone 305 indicates regions with normal full-spectrum MSS beams. Shaded zones 310 indicate regions where worst case frequency 1o interference causes lack of MSS service in ATC frequencies. In a comparison with FIG. 2, note that zones 305 and 310 cover different regions than zones and 210, thus showing that the ATC interference zones change with the orientation of the satellites.
FIG. 4 is a map, similar to that of FIG. 2, showing an example of dynamic frequency assignments. in fact, FIG. 2 and FIG. 4 shova the exact same situation in that the satellites are in the same place and it is the same time of day.
The difference is that FIG. 4 shows dynamic frequency assignments. Shaded zones 410 indicate regions where worst case frequency interference causes lack of MSS
2o service in ATC frequencies. Shaded zones 407 indicate regions of improvement in MSS service because with dynamic frequency assignments, the complete spectrum band is available to the MSS service. This improvement is achieved by assigning two separate frequencies, dynamically, to the ATC segments. Zones 407 have all MSS frequencies via select satellites as does zone 405, which is the same as zone 205 in FIG. 2. Separate ATC frequencies are designated for cities 414 and 415. FIG. 4 shows 50% more re-use because the number of satellite beams that do not have all MSS frequencies available when FIG. 2 is compared to FIG. 4 have been reduced by fifty percent.
3o FIG. 5 is a map, similar to that of FIG. 4, showing dynamic frequency assignments at a time six minutes later than that of FIG. 4. Shaded zones 510 indicate regions where worst case frequency interference causes lack of MSS
service in ATC frequencies. Shaded zones 507 indicate regions of improvement in MSS service by assigning two separate frequencies; dynamically, to MSS and ATC segments. Separate ATC frequencies are designated for cities 514 and 515.
In a comparison with FIG. 4, note that zones 507 cover different regions than zones 407, thus showing a need for frequency coordination between MSS and ATC segments. In FIG. 5, the area where the complete MSS spectrum and power is available for satellites services is the union of areas 505 and 507.
It should be understood that various alternatives and modifications of the 1 o present invention could be devised by those skilled in the art.
Nevertheless, the present invention is intended to embrace all such alternatives, modifications and variances that fall within the scope of the appended claims.
'The number of users of satellite 120, e.g., the number of handsets 105, can be either a predicted number of users of satellite 120 or an actual number of users of satellite 120. A suitable representation of the power per user of satellite I20 is an average power per user of satellite 120, e.g., an average power per handset 105.
1o Similarly, the number of users of cell tower I45, e.g., the number of cell phones 125, can be either a predicted number of users of cell tower 145 or an actual number of users of cell tower 145, and a suitable representation of the power per user is the average power per user, e.g., the average power per cell phone 125.
Assume an example with the following parameters:
Ns = 40;
Ps - I watt;
N~r = 250; and P~ - 0.2 watts.
DS - 40 x 1 watt DS - 40 watts DT - 250 x 0.2 watts DT - 50 watts Accordingly, RF power is allocated between satellite 120 and cellular tower 145 based on the ratio:
_D S 40 watts _40 DT -SO watts-50 Thus, RF power will be allocated between satellite i20 and cell tower 145 using a 40/50 ratio. So, for example, if 100 watts of ~F power are available for allocation in the particular frequency band:
power allocated to satellite 120 = ~~ x 100 watts = 44.4 watts ; and power allocated to cell tower 145 = ~~ x 100 watts = 55.6 watts .
Allocating a resource to a system means that the system can use an amount of the resource that is less than or equal to the allocated amount. For example, in tbis example, satellite 120 can use less than or equal to 44.4 watts, and cell tower to 145 can use less than or equal to 55.6 watts.
Using past usage statistics of terrestrial usage and satellite usage as well as a knowledge of a location of cellular tower 145, and predicted movement of beam 115, frequencies can be allocated to satellite 120 and to cellular tower 145 so that 15 the same frequencies can be used simultaneously by both the satellite system and the terrestrial system. Also, by allocating power or a number of simultaneous calls to each of satellite 120 and cellular tower 145, satellite 120 and cellular tower 145 can share the same frequency in a general geographic region, except in portions of that region where beam I 15 overlaps with the beam from cellular 2o tower 145, e.g., the beam containing RF link 140. In addition, by considering any of the near real time data of (1) a current number of simultaneous calls being made terrestrially, (2) a number of simultaneous calls made via satellite 120 andlor (3) the amount of power or interference received by satellite 120, e.g., from RF iink 135, more efficient frequency and power allocations can be made to 25 satellite 120 and cellular tower 145.
If the number of terrestrial users in a frequency band is greater than or equal to some threshold number, then their collective RF energy level appears as noise to satellite 120, and satellite 120 is effectively denied use of the frequency band.
3o Rather than allowing noise and interference to cause a denial of a use of frequency, method I75 evaluates the usage of the frequency by the cell tower and, if appropriate, proactively denies usage of the frequency to satellite I20.
Accordingly, method 175 denies a satellite system use of a frequency band s in a beam of a satellite of the satellite system if a number of users of a terrestrial system located in the beam and using the frequency band is greater than a threshold number. For example, with reference to FIG. l, method 175 denies satellite 120 use of a frequency band in beam 115 if the number of cell phones I25 using the frequency band is greater than (or predicted to be greater than) a threshold number.
Another aspect of method 175 is that it denies a satellite system use of a frequency band in a beam of a satellite of the satellite system if a demand for a resource by users of a terrestrial system located in the beam and using the frequency band is greater than a threshold demand. For example, assume that the resource is RF power and the threshold demand is 80 watts. A suitable representation of the demand for power is found by the product of the number of users of the terrestrial system and the power per user of the terrestrial system, i.e., NT x PT. With reference to FIG. 1, method I75 denies satellite 120 use of a 2o frequency band in beam 115 if NT x 1'T (i.e., of cell phones 125 located in the beam and using the frequency band) is greater than 80 watts.
The allocation of power and frequency are based on ( 1 ) the locations and beam coverages of the TBSs, e.g., cellular tower 145, (2) the predicted satellite beam coverages, e.g., the predicted coverage of beam 115, (3) the predicted satellite call traffic in a particular geographic area, and (4) the predicted terrestrial call traffic in the geographic area. The predicted satellite call traffic and the predicted terrestrial call traffic can be estimated by pass: usage statistics, near real-time statistics relating to the number of simultaneous callers, or satellite received 3o power statistics.
Note that the predictions can vary with time. For example, at 2 AIe~Jf, communications system 100 might not have any handsets 105 being used, and therefore, 100% of an available resource can be allocated to cell tower 14~.
Accordingly, method 175 is also contemplated as repeating the determination of Ds, the determination of DT, and the allocation of the resource after a passage of an interval of time, for example once every hour. Thus, the resource is occasionally or periodically reallocated.
As mentioned earlier, satellite IO may be part of a constellation of non-to geosynchronous satellites. Method 175 is contemplated as repeating the determination of Ds, the determination of DT, and the allocation of the resource after a positional change of the constellation. For example, when satellite moves such that beam 1 I S no longer covers cell tower 145, and as another satellite (not shown) moves in, method I 75 performs a reallocation of the 15 resource.
Beam 115 may cover an area that includes more than one cell tower, that is, with reference to F1G. I, beam l I5 may cover other cell towers (not shown) in addition to cell tower 145. For example, beam 115 may cover Pennsylvania, 2o which includes a cell tower in Pittsburgh and a cell tower in Philadelphia.
Thus, the terrestrial system includes the cell tower in Pittsburgh and the cell tower in Philadelphia. RF power is allocated between the satellite system and the terrestrial system as in the case of the single cell tower 145, but the number of users of the terrestrial system is the total of the number of users of the cell tower 25 in Pittsburgh plus the number of users of the cell tower in Philadelphia.
Also, the amount of power allocated to the terrestrial system is fitrther allocated between Pittsburgh and Philadelphia based on the ratio of the number of users in Pittsburgh and the number of users in Philadelphia.
30 Module I75 allows for the same frequencies to be used by both of satellite 120 and cellular tower 145 with either uni-directional or omni-directional antennas. Module I 75 also allows for mobile terrestrial services, such as cellular telephone, to use the same frequency as mobile satellite services. Although communications system 100 is described herein in the coa~text of a duplex conununication system, the methods employed by module 175 can also be employed for simplex communication, such as a paging system. Module 175 allows for the satellite service to use a frequency that is also used by the terrestrial service in all areas except for an area relatively near, e.g., a radius of 1 to 7 km, to cellular tower 145.
An embodiment of communications system 10 is an integrated mobile satellite service (MSS)/ancillary terrestrial component (ATC) system. In the integrated MSS/ATC system, an operator uses (a) past calling statistics, (b) locations of TBSs, (c) predicted satellite beam coverages, and in near real-time (d) a number of terrestrial and MSS callers within current and upcoming beam coverages, to dynamically allocate MSS and ATC callers communications system 10, thereby maximizing co-channel sharing as desired or required.
For example, an operator using its knowledge of beam coverage by beam l I5 could serve ATC and MSS loads in a single frequency channel by allocating power between the ATC and MSS loads to maximize capacity on the frequency 2o channel at any given time depending upon the geographic distribution of both MSS and ATC call traffic. If required, an integrated MSS/ATC operator can allocate, in real time, a complete frequency channel to ATC in beam 115 with no effect on MSS or ATC capability in any other beam or frequency channel. Again, if required, an integrated MSS/ATC operator can allocate, in real time, all of one frequency channel and part of another frequency channel to ATC in beam 115 with no effect on MSS or ATC capability in any other beam or frequency channel.
Furthermore, an integrated MSS/ATC operator can allocate, in real time, a complete frequency channel in beam 1 l~ and, with loss of MSS capacity in an adjacent beam, serve many more ATC callers. Of course, if required, an integrated MSS/ATC operator could re-allocate frequency channels to MSS in full or in part. Further, the allocation of frequency chamiels would vary from beam to beam and within a beam over time.
Because of overlapping satellite beams, the full MSS spectrum will be available for large geographical areas without regard to how many channels are allocated to ATC. Thus, a single system operator can dynamically allocate different ATC frequencies to ATC sites, thereby allowing even larger geographical areas to be served by the full MSS spectrum.
Simultaneous, near real time knowledge of the traffic volume and interference levels of both ATC and MSS segments as v~rell as the current and 1o predicted near-term locations of all satellite beams enables dynamic resource allocation between MSS and ATC. An. integrated MSSIATC system could use live noise floor measurements from the satellites themselves. Based on these measurements and knowledge of MSS traffic bandwidth requirements, a feedback loop to cellular tower I45 could dynamically allocate frequency channels and 15 traffic volumes, thus maximizing the number of ATC and MSS circuits.
A single code division multiple access (CDMA) operator can manage MSS/ATC shared bandwidth. Frequency re-use and capacity is increased by 50%
relative to band split between ATC and MSS. Tests have shown improvement 2o between.SS% and 58% by beam count. The operator dynamically controls frequency assignments in order to achieve this efficiency.
Employment of a single MSS/ATC system operator allows for gains in efficiency. Additional frequency re-use is achieved when the MSS operator can 25 dynamically assign MSS and ATC frequencies together, for example, up to another 50 % re-use. Frequency allocation algorithms create these efficiencies.
Quality of service also improves with a single MSS/ATC operator.
FICx. 2 is a map of the continental United States showing an example of 3o ATC frequency interference zones in a communications system where satellite service is provided by a constellation of non-geosynchronous satellites. Ten cities and Washington, DC are indicated by dots (~) and are assumed to have ATC
services. A shaded zone 205 indicates regions with normal full-spectrum MSS
beams. Shaded zones 210 indicate regions where worst case frequency interference causes lack of MSS service in ATC frequencies.
FIG. 3 is a map, similar to that of FIG. 2, showing ATC frequency interference zones for a time one day later than that of FIG. 2. With respect to the Earth, the constellation of non-geosynchronous satellites is oriented differently than in FIG. 2. A shaded zone 305 indicates regions with normal full-spectrum MSS beams. Shaded zones 310 indicate regions where worst case frequency 1o interference causes lack of MSS service in ATC frequencies. In a comparison with FIG. 2, note that zones 305 and 310 cover different regions than zones and 210, thus showing that the ATC interference zones change with the orientation of the satellites.
FIG. 4 is a map, similar to that of FIG. 2, showing an example of dynamic frequency assignments. in fact, FIG. 2 and FIG. 4 shova the exact same situation in that the satellites are in the same place and it is the same time of day.
The difference is that FIG. 4 shows dynamic frequency assignments. Shaded zones 410 indicate regions where worst case frequency interference causes lack of MSS
2o service in ATC frequencies. Shaded zones 407 indicate regions of improvement in MSS service because with dynamic frequency assignments, the complete spectrum band is available to the MSS service. This improvement is achieved by assigning two separate frequencies, dynamically, to the ATC segments. Zones 407 have all MSS frequencies via select satellites as does zone 405, which is the same as zone 205 in FIG. 2. Separate ATC frequencies are designated for cities 414 and 415. FIG. 4 shows 50% more re-use because the number of satellite beams that do not have all MSS frequencies available when FIG. 2 is compared to FIG. 4 have been reduced by fifty percent.
3o FIG. 5 is a map, similar to that of FIG. 4, showing dynamic frequency assignments at a time six minutes later than that of FIG. 4. Shaded zones 510 indicate regions where worst case frequency interference causes lack of MSS
service in ATC frequencies. Shaded zones 507 indicate regions of improvement in MSS service by assigning two separate frequencies; dynamically, to MSS and ATC segments. Separate ATC frequencies are designated for cities 514 and 515.
In a comparison with FIG. 4, note that zones 507 cover different regions than zones 407, thus showing a need for frequency coordination between MSS and ATC segments. In FIG. 5, the area where the complete MSS spectrum and power is available for satellites services is the union of areas 505 and 507.
It should be understood that various alternatives and modifications of the 1 o present invention could be devised by those skilled in the art.
Nevertheless, the present invention is intended to embrace all such alternatives, modifications and variances that fall within the scope of the appended claims.
Claims (38)
1. A method, comprising:
determining a demand (D S) for a resource by users of a satellite system;
determining a demand (D T) for said resource by users of a terrestrial system;
and allocating said resource between said satellite system and said terrestrial system based on a ratio of D S to D T.
determining a demand (D S) for a resource by users of a satellite system;
determining a demand (D T) for said resource by users of a terrestrial system;
and allocating said resource between said satellite system and said terrestrial system based on a ratio of D S to D T.
2. The method of claim 1, wherein said resource is radio frequency (RF) power.
3. The method of claim 2, wherein said ratio is where: N S = number of users of said satellite system, P S = power per user of said satellite system, N T = number of users of said terrestrial system, and P T = power per user of said terrestrial system.
4. The method of claim 3, wherein said number of users of said satellite system is a predicted number of users of said satellite system.
5. The method of claim 3, wherein said number of users of said satellite system is an actual number of users of said satellite system.
6. The method of claim 3, wherein said power per user of said satellite system is an average power per user of said satellite system.
7. The method of claim 3, wherein said number of users of said terrestrial system is a predicted number of users of said terrestrial system.
8. The method of claim 3, wherein said number of users of said terrestrial system is an actual number of users of said terrestrial system.
9. The method of claim 3, wherein said power per user of said terrestrial system is an average power per user of said terrestrial system.
10. The method of claim 1, further comprising repeating said determining said D S, determining said D T, and said allocating, after a passage of an interval of time.
11. The method of claim 1, wherein said satellite system comprises a non-geosynchronous satellite constellation, and wherein method further comprises repeating said determining said D S, determining said D T, and said allocating, after a positional change of said constellation.
12. The method of claim 1, wherein said satellite system comprises a satellite telecommunications system, and wherein said terrestrial system comprises a cellular telecommunications system.
13. The method of claim 1, wherein said users of said satellite system and said users of said terrestrial system are located in a beam of a satellite in said satellite system.
14. The method of claim 1, wherein said terrestrial system includes a transmitter having a non-directional antenna.
15. The method of claim 1, further comprising denying said satellite system use of a frequency band in a beam of a satellite of said satellite system if a number of users of said terrestrial system located in said beam and using said frequency band is greater than a threshold number.
16. The method of claim 1, further comprising denying said satellite system use of a frequency band in a beam of a satellite of said satellite system if D
T in said beam and using said frequency band is greater than a threshold demand.
T in said beam and using said frequency band is greater than a threshold demand.
17. A method, comprising:
determining a ratio where: N S = a number of users of a satellite system, P S = power per user of said satellite system, N T = a number of users of a terrestrial system, and P T = power per user of said terrestrial system; and allocating radio frequency (RF) power between said satellite system and said terrestrial system based on said ratio.
determining a ratio where: N S = a number of users of a satellite system, P S = power per user of said satellite system, N T = a number of users of a terrestrial system, and P T = power per user of said terrestrial system; and allocating radio frequency (RF) power between said satellite system and said terrestrial system based on said ratio.
18. The method of claim 17, wherein said number of users of said satellite system is a predicted number of users of said satellite system.
19. The method of claim 17, wherein said number of users of said satellite system is an actual number of users of said satellite system.
20. The method of claim 17, wherein said power per user of said satellite system is an average power per user of said satellite system.
21. The method of claim 17, wherein said number of users of said terrestrial system is a predicted number of users of said terrestrial system.
22. The method of claim 17, wherein said number of users of said terrestrial system is an actual number of users of said terrestrial system.
23. The method of claim 17, wherein said power per user of said terrestrial system is an average power per user of said terrestrial system.
24. The method of claim 17, further comprising repeating said determining and said allocating, after a passage of an interval of time.
25. The method of claim 17, wherein said satellite system comprises a non-geosynchronous satellite constellation, and wherein said method further comprises repeating said determining and said allocating, after a positional change of said constellation.
26. The method of claim 17, wherein said satellite system comprises a satellite telecommunications system, and wherein said terrestrial system comprises a cellular telecommunications system.
27. The method of claim 17, wherein said users of said satellite system and said users of said terrestrial system are located in a beam of a satellite in said satellite system.
28. The method of claim 17, wherein said terrestrial system includes a transmitter having a non-directional antenna.
29. The method of claim 17, further comprising denying said satellite system use of a frequency band in a beam of a satellite of said satellite system if a number of users of said terrestrial system located in said beam and using said frequency band is greater than a threshold number.
30. The method of claim 17, further comprising denying said satellite system use of a frequency band in a beam of a satellite of said satellite system if N T x P T in said beam and using said frequency band is greater than a threshold value.
31. A method, comprising:
determining a number of users of a terrestrial system located in a beam of a satellite and using a frequency band in said beam; and denying said satellite use of said frequency band in said beam if said number of users is greater than a threshold number.
determining a number of users of a terrestrial system located in a beam of a satellite and using a frequency band in said beam; and denying said satellite use of said frequency band in said beam if said number of users is greater than a threshold number.
32. The method of claim 31, further comprising:
determining a ratio where: N S = a number of users of said satellite system, P S = power per user of said satellite system, N T = a number of uses of said terrestrial system, and P T = power per user of said terrestrial system; and allocating radio frequency (RF) power between said satellite system and said terrestrial system based on said ratio.
determining a ratio where: N S = a number of users of said satellite system, P S = power per user of said satellite system, N T = a number of uses of said terrestrial system, and P T = power per user of said terrestrial system; and allocating radio frequency (RF) power between said satellite system and said terrestrial system based on said ratio.
33. A processor, comprising:
a module that determines a demand (D S) for a resource by users of a satellite system;
a module that determines a demand (D T) for said resource by users of a terrestrial system; and a module that allocates said resource between said satellite system and said terrestrial system based on a ratio of D S to D T.
a module that determines a demand (D S) for a resource by users of a satellite system;
a module that determines a demand (D T) for said resource by users of a terrestrial system; and a module that allocates said resource between said satellite system and said terrestrial system based on a ratio of D S to D T.
34. A processor, comprising:
a module that determines a ratio where: N S = a number of users of a satellite system, P S = power per user of said satellite system, N T = a number of users of a terrestrial system, and P T = power per user of said terrestrial system; and allocating radio frequency (RF) power between said satellite system and said terrestrial system based on said ratio.
a module that determines a ratio where: N S = a number of users of a satellite system, P S = power per user of said satellite system, N T = a number of users of a terrestrial system, and P T = power per user of said terrestrial system; and allocating radio frequency (RF) power between said satellite system and said terrestrial system based on said ratio.
35. A processor, comprising:
a module that determines a number of users of a terrestrial system located in a beam of a satellite and using a frequency band in said beam; and a module that denies said satellite use of said frequency band in said beam if said number of users is greater than a threshold number.
a module that determines a number of users of a terrestrial system located in a beam of a satellite and using a frequency band in said beam; and a module that denies said satellite use of said frequency band in said beam if said number of users is greater than a threshold number.
36. A storage media, comprising instructions for controlling a processor to:
determine a demand (D S) for a resource by users of a satellite system;
determine a demand (D T) for said resource by users of a terrestrial system;
and allocate said resource between said satellite system and said terrestrial system based on a ratio of D S to D T.
determine a demand (D S) for a resource by users of a satellite system;
determine a demand (D T) for said resource by users of a terrestrial system;
and allocate said resource between said satellite system and said terrestrial system based on a ratio of D S to D T.
37. A storage media, comprising instructions for controlling a processor to:
determine a ratio where: N S = a number of users of a satellite system, P S = power per user of said satellite system, N T = a number of users of a terrestrial system, and P T = power per user of said terrestrial system; and allocate radio frequency (RF) power between said satellite system and said terrestrial system based on said ratio.
determine a ratio where: N S = a number of users of a satellite system, P S = power per user of said satellite system, N T = a number of users of a terrestrial system, and P T = power per user of said terrestrial system; and allocate radio frequency (RF) power between said satellite system and said terrestrial system based on said ratio.
38. A storage media, comprising instructions for controlling a processor to:
determine a number of users of a terrestrial system located in a beam of a satellite and using a frequency band in said beam; and deny said satellite use of said frequency band in said beam if said number of users is greater than a threshold number.
determine a number of users of a terrestrial system located in a beam of a satellite and using a frequency band in said beam; and deny said satellite use of said frequency band in said beam if said number of users is greater than a threshold number.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US39199702P | 2002-06-27 | 2002-06-27 | |
| US60/391,997 | 2002-06-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2433600A1 true CA2433600A1 (en) | 2003-12-27 |
Family
ID=30770885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002433600A Abandoned CA2433600A1 (en) | 2002-06-27 | 2003-06-26 | Resource allocation to terrestrial and satellite services |
Country Status (4)
| Country | Link |
|---|---|
| US (2) | US8121605B2 (en) |
| AU (1) | AU2003204876A1 (en) |
| BR (1) | BR0301964A (en) |
| CA (1) | CA2433600A1 (en) |
Families Citing this family (116)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7174127B2 (en) * | 1999-08-10 | 2007-02-06 | Atc Technologies, Llc | Data communications systems and methods using different wireless links for inbound and outbound data |
| US20030149986A1 (en) * | 1999-08-10 | 2003-08-07 | Mayfield William W. | Security system for defeating satellite television piracy |
| US6859652B2 (en) * | 2000-08-02 | 2005-02-22 | Mobile Satellite Ventures, Lp | Integrated or autonomous system and method of satellite-terrestrial frequency reuse using signal attenuation and/or blockage, dynamic assignment of frequencies and/or hysteresis |
| WO2002011302A2 (en) * | 2000-08-02 | 2002-02-07 | Mobiles Satellite Ventures Lp | Coordinated satellite-terrestrial frequency reuse |
| US7558568B2 (en) * | 2003-07-28 | 2009-07-07 | Atc Technologies, Llc | Systems and methods for modifying antenna radiation patterns of peripheral base stations of a terrestrial network to allow reduced interference |
| US8265637B2 (en) * | 2000-08-02 | 2012-09-11 | Atc Technologies, Llc | Systems and methods for modifying antenna radiation patterns of peripheral base stations of a terrestrial network to allow reduced interference |
| US7792488B2 (en) | 2000-12-04 | 2010-09-07 | Atc Technologies, Llc | Systems and methods for transmitting electromagnetic energy over a wireless channel having sufficiently weak measured signal strength |
| US7664460B2 (en) * | 2001-09-14 | 2010-02-16 | Atc Technologies, Llc | Systems and methods for terrestrial reuse of cellular satellite frequency spectrum in a time-division duplex and/or frequency-division duplex mode |
| US7218931B2 (en) * | 2001-09-14 | 2007-05-15 | Atc Technologies, Llc | Satellite radiotelephone systems providing staggered sectorization for terrestrial reuse of satellite frequencies and related methods and radiotelephone systems |
| US7062267B2 (en) * | 2001-09-14 | 2006-06-13 | Atc Technologies, Llc | Methods and systems for modifying satellite antenna cell patterns in response to terrestrial reuse of satellite frequencies |
| US7593724B2 (en) * | 2001-09-14 | 2009-09-22 | Atc Technologies, Llc | Systems and methods for terrestrial reuse of cellular satellite frequency spectrum in a time-division duplex mode |
| US7155340B2 (en) * | 2001-09-14 | 2006-12-26 | Atc Technologies, Llc | Network-assisted global positioning systems, methods and terminals including doppler shift and code phase estimates |
| US7890098B2 (en) * | 2001-09-14 | 2011-02-15 | Atc Technologies, Llc | Staggered sectorization for terrestrial reuse of satellite frequencies |
| US7006789B2 (en) * | 2001-09-14 | 2006-02-28 | Atc Technologies, Llc | Space-based network architectures for satellite radiotelephone systems |
| US7603117B2 (en) | 2001-09-14 | 2009-10-13 | Atc Technologies, Llc | Systems and methods for terrestrial use of cellular satellite frequency spectrum |
| US8270898B2 (en) * | 2001-09-14 | 2012-09-18 | Atc Technologies, Llc | Satellite-band spectrum utilization for reduced or minimum interference |
| US7957694B2 (en) * | 2004-08-11 | 2011-06-07 | Atc Technologies, Llc | Satellite-band spectrum utilization for reduced or minimum interference |
| US7113778B2 (en) * | 2001-09-14 | 2006-09-26 | Atc Technologies, Llc | Aggregate radiated power control for multi-band/multi-mode satellite radiotelephone communications systems and methods |
| US7792069B2 (en) * | 2001-09-14 | 2010-09-07 | Atc Technologies, Llc | Systems and methods for terrestrial reuse of cellular satellite frequency spectrum using different channel separation technologies in forward and reverse links |
| US7447501B2 (en) * | 2001-09-14 | 2008-11-04 | Atc Technologies, Llc | Systems and methods for monitoring selected terrestrially used satellite frequency signals to reduce potential interference |
| US6999720B2 (en) * | 2001-09-14 | 2006-02-14 | Atc Technologies, Llc | Spatial guardbands for terrestrial reuse of satellite frequencies |
| US7623859B2 (en) * | 2001-09-14 | 2009-11-24 | Atc Technologies, Llc | Additional aggregate radiated power control for multi-band/multi-mode satellite radiotelephone communications systems and methods |
| US7181161B2 (en) * | 2001-09-14 | 2007-02-20 | Atc Technologies, Llc | Multi-band/multi-mode satellite radiotelephone communications systems and methods |
| US6785543B2 (en) | 2001-09-14 | 2004-08-31 | Mobile Satellite Ventures, Lp | Filters for combined radiotelephone/GPS terminals |
| US7603081B2 (en) * | 2001-09-14 | 2009-10-13 | Atc Technologies, Llc | Radiotelephones and operating methods that use a single radio frequency chain and a single baseband processor for space-based and terrestrial communications |
| US6856787B2 (en) | 2002-02-12 | 2005-02-15 | Mobile Satellite Ventures, Lp | Wireless communications systems and methods using satellite-linked remote terminal interface subsystems |
| US7593691B2 (en) * | 2002-02-12 | 2009-09-22 | Atc Technologies, Llc | Systems and methods for controlling a level of interference to a wireless receiver responsive to a power level associated with a wireless transmitter |
| US6937857B2 (en) | 2002-05-28 | 2005-08-30 | Mobile Satellite Ventures, Lp | Systems and methods for reducing satellite feeder link bandwidth/carriers in cellular satellite systems |
| US7092708B2 (en) * | 2002-12-12 | 2006-08-15 | Atc Technologies, Llc | Systems and methods for increasing capacity and/or quality of service of terrestrial cellular and satellite systems using terrestrial reception of satellite band frequencies |
| US7421342B2 (en) * | 2003-01-09 | 2008-09-02 | Atc Technologies, Llc | Network-assisted global positioning systems, methods and terminals including doppler shift and code phase estimates |
| US7444170B2 (en) * | 2003-03-24 | 2008-10-28 | Atc Technologies, Llc | Co-channel wireless communication methods and systems using nonsymmetrical alphabets |
| US7203490B2 (en) | 2003-03-24 | 2007-04-10 | Atc Technologies, Llc | Satellite assisted push-to-send radioterminal systems and methods |
| US6879829B2 (en) * | 2003-05-16 | 2005-04-12 | Mobile Satellite Ventures, Lp | Systems and methods for handover between space based and terrestrial radioterminal communications, and for monitoring terrestrially reused satellite frequencies at a radioterminal to reduce potential interference |
| US20040240525A1 (en) * | 2003-05-29 | 2004-12-02 | Karabinis Peter D. | Wireless communications methods and apparatus using licensed-use system protocols with unlicensed-use access points |
| US7340213B2 (en) * | 2003-07-30 | 2008-03-04 | Atc Technologies, Llc | Intra- and/or inter-system interference reducing systems and methods for satellite communications systems |
| US8670705B2 (en) * | 2003-07-30 | 2014-03-11 | Atc Technologies, Llc | Additional intra-and/or inter-system interference reducing systems and methods for satellite communications systems |
| US20050041619A1 (en) * | 2003-08-22 | 2005-02-24 | Karabinis Peter D. | Wireless systems, methods and devices employing forward- and/or return-link carriers having different numbers of sub-band carriers |
| US7113743B2 (en) | 2003-09-11 | 2006-09-26 | Atc Technologies, Llc | Systems and methods for inter-system sharing of satellite communications frequencies within a common footprint |
| AU2004306121B2 (en) * | 2003-09-23 | 2009-06-25 | Atc Technologies, Llc | Systems and methods for mobility management in overlaid satellite and terrestrial communications systems |
| US8380186B2 (en) * | 2004-01-22 | 2013-02-19 | Atc Technologies, Llc | Satellite with different size service link antennas and radioterminal communication methods using same |
| US7418236B2 (en) * | 2004-04-20 | 2008-08-26 | Mobile Satellite Ventures, Lp | Extraterrestrial communications systems and methods including ancillary extraterrestrial components |
| US8655398B2 (en) * | 2004-03-08 | 2014-02-18 | Atc Technologies, Llc | Communications systems and methods including emission detection |
| US7933552B2 (en) * | 2004-03-22 | 2011-04-26 | Atc Technologies, Llc | Multi-band satellite and/or ancillary terrestrial component radioterminal communications systems and methods with combining operation |
| US7606590B2 (en) | 2004-04-07 | 2009-10-20 | Atc Technologies, Llc | Satellite/hands-free interlock systems and/or companion devices for radioterminals and related methods |
| US7636566B2 (en) * | 2004-04-12 | 2009-12-22 | Atc Technologies, Llc | Systems and method with different utilization of satellite frequency bands by a space-based network and an ancillary terrestrial network |
| US20050239399A1 (en) * | 2004-04-21 | 2005-10-27 | Karabinis Peter D | Mobile terminals and set top boxes including multiple satellite band service links, and related systems and methods |
| US8265549B2 (en) * | 2004-05-18 | 2012-09-11 | Atc Technologies, Llc | Satellite communications systems and methods using radiotelephone |
| US20050260984A1 (en) * | 2004-05-21 | 2005-11-24 | Mobile Satellite Ventures, Lp | Systems and methods for space-based use of terrestrial cellular frequency spectrum |
| WO2006012348A2 (en) * | 2004-06-25 | 2006-02-02 | Atc Technologies, Llc | Method and system for frequency translation on-board a communications satellite |
| US7639981B2 (en) | 2004-11-02 | 2009-12-29 | Atc Technologies, Llc | Apparatus and methods for power control in satellite communications systems with satellite-linked terrestrial stations |
| BRPI0518932A2 (en) * | 2004-11-16 | 2008-12-16 | Atc Tech Llc | satellite communications system, and method for providing satellite |
| US7747229B2 (en) * | 2004-11-19 | 2010-06-29 | Atc Technologies, Llc | Electronic antenna beam steering using ancillary receivers and related methods |
| US7454175B2 (en) * | 2004-12-07 | 2008-11-18 | Atc Technologies, Llc | Broadband wireless communications systems and methods using multiple non-contiguous frequency bands/segments |
| US8594704B2 (en) * | 2004-12-16 | 2013-11-26 | Atc Technologies, Llc | Location-based broadcast messaging for radioterminal users |
| KR101160094B1 (en) * | 2005-01-05 | 2012-06-27 | 에이티씨 테크놀로지즈, 엘엘씨. | Adaptive beam forming with multi-user detection and interference reduction in satellite communication systems and methods |
| US7596111B2 (en) * | 2005-01-27 | 2009-09-29 | Atc Technologies, Llc | Satellite/terrestrial wireless communications systems and methods using disparate channel separation codes |
| US7738837B2 (en) * | 2005-02-22 | 2010-06-15 | Atc Technologies, Llc | Satellites using inter-satellite links to create indirect feeder link paths |
| US7620394B2 (en) * | 2005-02-22 | 2009-11-17 | Atc Technologies, Llc | Reusing frequencies of a fixed and/or mobile communications system |
| US7636546B2 (en) * | 2005-02-22 | 2009-12-22 | Atc Technologies, Llc | Satellite communications systems and methods using diverse polarizations |
| US7756490B2 (en) * | 2005-03-08 | 2010-07-13 | Atc Technologies, Llc | Methods, radioterminals, and ancillary terrestrial components for communicating using spectrum allocated to another satellite operator |
| US7796986B2 (en) * | 2005-03-11 | 2010-09-14 | Atc Technologies, Llc | Modification of transmission values to compensate for interference in a satellite down-link communications |
| US7627285B2 (en) * | 2005-03-14 | 2009-12-01 | Atc Technologies, Llc | Satellite communications systems and methods with distributed and/or centralized architecture including ground-based beam forming |
| WO2006099443A1 (en) * | 2005-03-15 | 2006-09-21 | Atc Technologies, Llc | Intra-system and/or inter-system reuse of feeder link frequencies including interference suppression systems and methods |
| WO2006099501A1 (en) * | 2005-03-15 | 2006-09-21 | Atc Technologies, Llc | Methods and systems providing adaptive feeder links for ground based beam forming and related systems and satellites |
| US7453396B2 (en) * | 2005-04-04 | 2008-11-18 | Atc Technologies, Llc | Radioterminals and associated operating methods that alternate transmission of wireless communications and processing of global positioning system signals |
| US7817967B2 (en) * | 2005-06-21 | 2010-10-19 | Atc Technologies, Llc | Communications systems including adaptive antenna systems and methods for inter-system and intra-system interference reduction |
| US7970345B2 (en) * | 2005-06-22 | 2011-06-28 | Atc Technologies, Llc | Systems and methods of waveform and/or information splitting for wireless transmission of information to one or more radioterminals over a plurality of transmission paths and/or system elements |
| US7907944B2 (en) * | 2005-07-05 | 2011-03-15 | Atc Technologies, Llc | Methods, apparatus and computer program products for joint decoding of access probes in a CDMA communications system |
| US7583935B2 (en) | 2005-07-08 | 2009-09-01 | Telcom Ventures, Llc | Method and system for mitigating co-channel interference |
| US8190114B2 (en) * | 2005-07-20 | 2012-05-29 | Atc Technologies, Llc | Frequency-dependent filtering for wireless communications transmitters |
| US7623867B2 (en) * | 2005-07-29 | 2009-11-24 | Atc Technologies, Llc | Satellite communications apparatus and methods using asymmetrical forward and return link frequency reuse |
| US7461756B2 (en) * | 2005-08-08 | 2008-12-09 | Plastipak Packaging, Inc. | Plastic container having a freestanding, self-supporting base |
| AU2006280065B2 (en) * | 2005-08-09 | 2010-09-30 | Atc Technologies, Llc | Satellite communications systems and methods using substantially co-located feeder link antennas |
| US20070123252A1 (en) * | 2005-10-12 | 2007-05-31 | Atc Technologies, Llc | Systems, methods and computer program products for mobility management in hybrid satellite/terrestrial wireless communications systems |
| CN101356756A (en) * | 2006-01-03 | 2009-01-28 | Telcom投资有限责任公司 | Use of timing and synchronization of an orthogonal frequency division multiplex in combined satellite-terrestrial network |
| US8090041B2 (en) * | 2006-01-20 | 2012-01-03 | Atc Technologies Llc | Systems and methods for forward link closed loop beamforming |
| US8705436B2 (en) * | 2006-02-15 | 2014-04-22 | Atc Technologies, Llc | Adaptive spotbeam broadcasting, systems, methods and devices for high bandwidth content distribution over satellite |
| US7751823B2 (en) * | 2006-04-13 | 2010-07-06 | Atc Technologies, Llc | Systems and methods for controlling a level of interference to a wireless receiver responsive to an activity factor associated with a wireless transmitter |
| US8923850B2 (en) * | 2006-04-13 | 2014-12-30 | Atc Technologies, Llc | Systems and methods for controlling base station sectors to reduce potential interference with low elevation satellites |
| US9014619B2 (en) | 2006-05-30 | 2015-04-21 | Atc Technologies, Llc | Methods and systems for satellite communications employing ground-based beam forming with spatially distributed hybrid matrix amplifiers |
| US8179832B2 (en) | 2006-06-05 | 2012-05-15 | Globalstar, Inc. | System and method for providing an improved terrestrial subsystem for use in mobile satellite systems |
| US8169955B2 (en) * | 2006-06-19 | 2012-05-01 | Atc Technologies, Llc | Systems and methods for orthogonal frequency division multiple access (OFDMA) communications over satellite links |
| US8526941B2 (en) * | 2006-06-29 | 2013-09-03 | Atc Technologies, Llc | Apparatus and methods for mobility management in hybrid terrestrial-satellite mobile communications systems |
| US7974571B2 (en) * | 2007-01-09 | 2011-07-05 | Viasat, Inc. | Multi-antenna satellite system with wireless interface to vehicle |
| US8095145B2 (en) * | 2007-03-27 | 2012-01-10 | Telcom Ventures, Llc | Method and system of distributing transmissions in a wireless data transmission system |
| US8165578B2 (en) | 2007-03-27 | 2012-04-24 | Telcom Ventures, Llc | Method and system for improving the spectral efficiency of a data communication link |
| US8031646B2 (en) * | 2007-05-15 | 2011-10-04 | Atc Technologies, Llc | Systems, methods and devices for reusing spectrum of another operator |
| US8064824B2 (en) * | 2007-07-03 | 2011-11-22 | Atc Technologies, Llc | Systems and methods for reducing power robbing impact of interference to a satellite |
| US7978135B2 (en) * | 2008-02-15 | 2011-07-12 | Atc Technologies, Llc | Antenna beam forming systems/methods using unconstrained phase response |
| FR2928794A1 (en) * | 2008-03-17 | 2009-09-18 | Eutelsat Sa | TELECOMMUNICATION NETWORK |
| US8433241B2 (en) | 2008-08-06 | 2013-04-30 | Atc Technologies, Llc | Systems, methods and devices for overlaid operations of satellite and terrestrial wireless communications systems |
| US8193975B2 (en) | 2008-11-12 | 2012-06-05 | Atc Technologies | Iterative antenna beam forming systems/methods |
| US8339308B2 (en) * | 2009-03-16 | 2012-12-25 | Atc Technologies Llc | Antenna beam forming systems, methods and devices using phase adjusted least squares beam forming |
| US8520561B2 (en) * | 2009-06-09 | 2013-08-27 | Atc Technologies, Llc | Systems, methods and network components that provide different satellite spot beam return carrier groupings and reuse patterns |
| CA2769828C (en) | 2009-09-28 | 2017-04-04 | Atc Technologies, Llc | Systems and methods for adaptive interference cancellation beamforming |
| US10110288B2 (en) * | 2009-11-04 | 2018-10-23 | Atc Technologies, Llc | Frequency division duplex (FDD) return link transmit diversity systems, methods and devices using forward link side information |
| US8274925B2 (en) * | 2010-01-05 | 2012-09-25 | Atc Technologies, Llc | Retaining traffic channel assignments for satellite terminals to provide lower latency communication services |
| US20130015713A1 (en) * | 2010-03-30 | 2013-01-17 | Sanyo Electric Co., Ltd. | System stabilization system, electric power supply and demand adjustment device, control device for electric power supply and demand adjustment device, electric power supply and demand adjustment method, and electric power supply and demand adjustment method using storage battery |
| IL211663A (en) * | 2011-03-10 | 2015-03-31 | Elta Systems Ltd | Apparatus and methods for dynamic spectrum allocation in satellite communications |
| WO2013177578A1 (en) * | 2012-05-25 | 2013-11-28 | Eden Rock Communications, Llc | System and methods for cellular/satellite network coexistence |
| US9026118B2 (en) * | 2012-08-17 | 2015-05-05 | Maxlinear, Inc. | Multi-standard coverage map generation |
| US9318896B2 (en) * | 2012-09-27 | 2016-04-19 | Hewlett Packard Enterprise Development Lp | Fault-tolerant power control in a computer system |
| US9426666B2 (en) * | 2013-11-26 | 2016-08-23 | The Boeing Company | Integrated resource planning for satellite systems |
| US9942892B2 (en) * | 2014-09-30 | 2018-04-10 | The Boeing Company | Self-optimizing mobile satellite systems |
| US9628168B2 (en) | 2015-02-26 | 2017-04-18 | Space Systems/Loral, Llc | Dynamic link adaption and/or dynamic allocation of communication resources of a communication system based on external interference information received from external interference information sources |
| US9876691B2 (en) * | 2015-10-20 | 2018-01-23 | Arris Enterprises Llc | Band steering using deep packet inspection |
| JP2017168897A (en) * | 2016-03-14 | 2017-09-21 | ソフトバンク株式会社 | Communication terminal device, ground cellular base station and mobile communication system |
| US10560951B2 (en) * | 2017-06-14 | 2020-02-11 | Lockheed Martin Corporation | Mitigation of adjacent channel interference in communication satellites |
| US11272373B2 (en) * | 2018-01-26 | 2022-03-08 | Hughes Network Systems, Llc | System and methods for spectrum sharing between satellite and terrestrial communication systems |
| US10674446B1 (en) * | 2018-05-08 | 2020-06-02 | Architecture Technology Corporation | Sleep/wake based on coverage |
| US10771989B2 (en) | 2018-12-20 | 2020-09-08 | The Boeing Company | Adaptive self-optimizing network using closed-loop feedback |
| US11050616B2 (en) | 2018-12-20 | 2021-06-29 | The Boeing Company | Adaptive self-optimizing network using closed-loop feedback |
| JP7452531B2 (en) * | 2019-03-29 | 2024-03-19 | ソニーグループ株式会社 | Communication control device, communication device, and communication control method |
| US11477787B2 (en) | 2019-09-13 | 2022-10-18 | Aalyria Technologies, Inc. | Dynamic spectrum sharing between coverage types |
| US11463843B2 (en) | 2020-05-07 | 2022-10-04 | Qualcomm Incorporated | Methods and apparatus for concurrent operation of SPS receiver and wireless transmitter |
| US11277201B1 (en) | 2021-03-14 | 2022-03-15 | Skylo Technologies, Inc. | Coordinated satellite and terrestrial channel utilization |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6157621A (en) * | 1991-10-28 | 2000-12-05 | Teledesic Llc | Satellite communication system |
| EP0654202B1 (en) * | 1993-06-04 | 2001-10-04 | Motorola, Inc. | A method and apparatus of dynamically adjusting a maximum number of users on a physical channel |
| KR100263181B1 (en) * | 1998-02-27 | 2000-08-01 | 윤종용 | Antenna of portable radio equipment |
| GB9817268D0 (en) * | 1998-08-07 | 1998-10-07 | Northern Telecom Ltd | A method of allocating resources in a telecommunications network |
| US6775251B1 (en) * | 1998-09-17 | 2004-08-10 | Globalstar L.P. | Satellite communication system providing multi-gateway diversity and improved satellite loading |
| US6606307B1 (en) * | 1999-03-23 | 2003-08-12 | Hughes Electronics Corporation | Techniques for utilization of bandwidth space assets |
| GB2357669A (en) * | 1999-12-24 | 2001-06-27 | Nokia Networks Oy | Dynamic channel allocation |
| WO2002011302A2 (en) * | 2000-08-02 | 2002-02-07 | Mobiles Satellite Ventures Lp | Coordinated satellite-terrestrial frequency reuse |
-
2003
- 2003-06-18 US US10/463,524 patent/US8121605B2/en active Active
- 2003-06-24 AU AU2003204876A patent/AU2003204876A1/en not_active Abandoned
- 2003-06-26 CA CA002433600A patent/CA2433600A1/en not_active Abandoned
- 2003-06-27 BR BR0301964-0A patent/BR0301964A/en not_active Application Discontinuation
-
2012
- 2012-01-13 US US13/350,357 patent/US8594682B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| BR0301964A (en) | 2004-08-24 |
| US20120122449A1 (en) | 2012-05-17 |
| US8121605B2 (en) | 2012-02-21 |
| US20040072539A1 (en) | 2004-04-15 |
| AU2003204876A1 (en) | 2004-01-22 |
| US8594682B2 (en) | 2013-11-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8594682B2 (en) | Resource allocation to terrestrial and satellite services | |
| US7620394B2 (en) | Reusing frequencies of a fixed and/or mobile communications system | |
| US5946625A (en) | Method for improving co-channel interference in a cellular system | |
| EP3651381B1 (en) | System for providing high speed communications service in an airborne wireless cellular network | |
| US5669062A (en) | Methods of demand-based adaptive channel reuse for telecommunications systems | |
| CA2440609C (en) | Communications apparatus and method | |
| Tang et al. | Resource allocation for LEO beam-hopping satellites in a spectrum sharing scenario | |
| US7792070B1 (en) | Multi-beam satellite network to maximize bandwidth utilization | |
| AU2002228208A1 (en) | Communication apparatus and method with links to mobile terminals via a satellite or a terrestrial network with partly reuse of the frequency band | |
| ZA200307062B (en) | Communications apparatus and method. | |
| US7136654B1 (en) | Power based channel assignment in a wireless communication system | |
| US8923849B2 (en) | System and method for providing an improved terrestrial subsystem for use in mobile satellite systems | |
| US5898382A (en) | Shared channel communication system | |
| US20090213780A1 (en) | Satellite Hub Based Adaptive Allocation Of Frequency Bands | |
| Umehira et al. | Dynamic channel assignment based on interference measurement with threshold for multi-beam mobile satellite networks | |
| Hussien et al. | Capacity, coverage and power profile performance evaluation of a novel rural broadband services exploiting TVWS from high altitude platform | |
| CA2334447C (en) | Coordinated satellite-terrestrial frequency reuse | |
| Aein | Call Blocking in Spectrally Constrained FDMA/DAMA SATCOM Systems | |
| Crenshaw | Compatibility analysis between proposed feederlinks of non‐geostationary mobile‐satellite services and existing services near 1· 4 GHz | |
| Trajkov et al. | Spectrum sharing for directional systems | |
| MXPA99003325A (en) | Method for improving co-channel interference in a cellular system | |
| MXPA98004124A (en) | Means to increase capacity in radiocellular systems (moviles and fij |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |