WO2004036813A2 - Repeaters sharing a common medium for communications - Google Patents
Repeaters sharing a common medium for communications Download PDFInfo
- Publication number
- WO2004036813A2 WO2004036813A2 PCT/US2003/033082 US0333082W WO2004036813A2 WO 2004036813 A2 WO2004036813 A2 WO 2004036813A2 US 0333082 W US0333082 W US 0333082W WO 2004036813 A2 WO2004036813 A2 WO 2004036813A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- repeater
- band
- communications
- transmission
- medium
- Prior art date
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 24
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000036039 immunity Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/542—Systems for transmission via power distribution lines the information being in digital form
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/02—Adaptations of transformers or inductances for specific applications or functions for non-linear operation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/32—Non-reciprocal transmission devices
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/0115—Frequency selective two-port networks comprising only inductors and capacitors
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/0138—Electrical filters or coupling circuits
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/38—Impedance-matching networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/36—Repeater circuits
- H04B3/38—Repeater circuits for signals in two different frequency ranges transmitted in opposite directions over the same transmission path
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/56—Circuits for coupling, blocking, or by-passing of signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/04—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/04—Fixed inductances of the signal type with magnetic core
- H01F17/06—Fixed inductances of the signal type with magnetic core with core substantially closed in itself, e.g. toroid
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/14—Inductive couplings
- H01F2038/143—Inductive couplings for signals
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H1/00—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
- H03H2001/0092—Inductor filters, i.e. inductors whose parasitic capacitance is of relevance to consider it as filter
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H2007/013—Notch or bandstop filters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2203/00—Indexing scheme relating to line transmission systems
- H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
- H04B2203/5404—Methods of transmitting or receiving signals via power distribution lines
- H04B2203/5408—Methods of transmitting or receiving signals via power distribution lines using protocols
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2203/00—Indexing scheme relating to line transmission systems
- H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
- H04B2203/5404—Methods of transmitting or receiving signals via power distribution lines
- H04B2203/5425—Methods of transmitting or receiving signals via power distribution lines improving S/N by matching impedance, noise reduction, gain control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2203/00—Indexing scheme relating to line transmission systems
- H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
- H04B2203/5462—Systems for power line communications
- H04B2203/5479—Systems for power line communications using repeaters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2203/00—Indexing scheme relating to line transmission systems
- H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
- H04B2203/5462—Systems for power line communications
- H04B2203/5483—Systems for power line communications using coupling circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2203/00—Indexing scheme relating to line transmission systems
- H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
- H04B2203/5462—Systems for power line communications
- H04B2203/5491—Systems for power line communications using filtering and bypassing
Definitions
- the present invention relates to communications, and more particularly, to an arrangement of for communications on a bi-directional medium.
- the arrangement is suited for communications over a power line.
- communications media are characterized by a single signal medium whose physical continuity cannot be interrupted.
- communications transducers that are totally bidirectional, as opposed to being omni-directional, or have very limited directionality. Examples include energized electrical power wires, gasses and fluids confined to pipes, and certain optical media.
- a signal is coupled to a wire in a non-directional manner, that is, the signal may propagate in both directions along a wire. Often, one direction is an intended direction and the other direction is unintended.
- a signal to noise ratio will deteriorate to a point that a repeater is necessary to allow data represented by the signal to be conveyed at reasonable quality beyond that point.
- a receiver can receive signals from both directions, and the possibility exists for signals propagating in an unintended direction to interfere with intended signals. If multiple frequency bands are available, then the repeater may receive at one frequency and retransmit at another frequency. However, even this arrangement does not ensure immunity from interference, especially if the level of the intended signal is similar to that of the unintended signal, due to similar attenuations between the respective transmitters and the receiver.
- the present invention relates to communications, and more particularly, to an arrangement of repeaters for communications on a bi-directional medium.
- the system includes a first repeater, a second repeater, a third repeater and a fourth repeater, each of which is coupled to the medium.
- the first repeater and the second repeater communicate with each other on a first band for a transmission from the first repeater to the second repeater, and on a second band for a transmission from the second repeater to the first repeater.
- the second repeater and the third repeater communicate with each other on a third band for a transmission from the second repeater to the third repeater, and on a fourth band for a transmission from the third repeater to the second repeater.
- the third repeater and the fourth repeater communicate with each other on the second band for a transmission from the third repeater to the fourth repeater, and on the first band for a transmission from the fourth repeater to the third repeater.
- Fig. 1 is a block diagram of a configuration of repeaters in a power line communication system. DESCRIPTION OF THE INVENTION
- the present invention relates to communications, and more particularly, to an arrangement of repeaters for communications on a bi-directional medium.
- the arrangement is described herein in the context of a power line communications system, but can be used on any bi-directional medium, and is particularly well suited for full duplex communications over a single continuous bi-directional medium.
- Fig. 1 is a block diagram of a configuration of repeaters in a power line communication system 100.
- System 100 includes a head-end (HE) 700, a Repeater A 705, a Repeater B 710, a Repeater C 715, and a Repeater D 720.
- HE head-end
- a selection of frequency bands can be used at the various repeaters, so as to reduce an amplitude of an unintended signal relative to that of an intended signal.
- HE 700 transmits to Repeater A 705 on frequency Band 1 and listens on Band 2.
- Repeater A 705 listens to HE 700 on Band 1 and transmits to HE 700 on Band 2. Repeater A 705 also transmits to Repeater B 710 on Band 3, and listens to Repeater B 710 on Band 4.
- Repeater B 710 listens to Repeater A 705 on Band 3, and transmits to Repeater A 705 on Band 4.
- Repeater B 710 also transmits to Repeater C 715 on Band 2, and listens to Repeater C 715 on Band 1.
- Repeater C 715 listens to Repeater B 710 on Band 2, and transmits to Repeater B 710 on Band 1.
- Repeater C 715 also transmits to Repeater D 720 on Band 4, and listens to Repeater D 720 on Band 3.
- Repeater B 710 By arranging Repeater B 710 to transmit to Repeater C 715 on Band 2 while listening on Band 1, an unintended path 725 for a Band 1 signal from Repeater C 715, traverses two wire segments, namely a wire segment B-C 780 and a wire segment A-B 755.
- the Band 1 receiver at Repeater A 705 receives its intended signal from HE 700, which traverses one wire segment, namely a wire segment HE-A 750, while the unintended signal from Repeater C is likely to be more attenuated, having traversed two wire segments. Similarly, other unintended paths 760, 765, 770 and 775 span two wire segments, and thus attenuate unintended signals.
- HE 700 as a first repeater
- Repeater A 705 as a second repeater
- Repeater B 710 as a third repeater
- Repeater C 715 as a fourth repeater.
- the system thus includes a first repeater, a second repeater, a third repeater and a fourth repeater, each of which is coupled to the medium.
- the first repeater and the second repeater communicate with each other on a first band for a transmission from the first repeater to the second repeater, and on a second band for a transmission from the second repeater to the first repeater.
- the second repeater and the third repeater communicate with each other on a third band for a transmission from the second repeater to the third repeater, and on a fourth band for a transmission from the third repeater to the second repeater.
- the third repeater and the fourth repeater communicate with each other on the second band for a transmission from the third repeater to the fourth repeater, and on the first band for a transmission from the fourth repeater to the third repeater.
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002502107A CA2502107A1 (en) | 2002-10-17 | 2003-10-17 | Repeaters sharing a common medium for communications |
AU2003277439A AU2003277439A1 (en) | 2002-10-17 | 2003-10-17 | Repeaters sharing a common medium for communications |
JP2004545509A JP2006503505A (en) | 2002-10-17 | 2003-10-17 | Repeater sharing a common medium for communication |
EA200500667A EA200500667A1 (en) | 2002-10-17 | 2003-10-17 | REPEATERS USING A COMMON MEDIA FOR COMMUNICATIONS |
BR0315364-9A BR0315364A (en) | 2002-10-17 | 2003-10-17 | Repeaters sharing a common medium for communications |
MXPA05004090A MXPA05004090A (en) | 2002-10-17 | 2003-10-17 | Repeaters sharing a common medium for communications. |
EP03809155A EP1552678A2 (en) | 2002-10-17 | 2003-10-17 | Repeaters sharing a common medium for communications |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US41917402P | 2002-10-17 | 2002-10-17 | |
US60/419,174 | 2002-10-17 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2004036813A2 true WO2004036813A2 (en) | 2004-04-29 |
WO2004036813A3 WO2004036813A3 (en) | 2004-09-10 |
Family
ID=32108037
Family Applications (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2003/033081 WO2004036879A2 (en) | 2002-10-17 | 2003-10-17 | Filter for segmenting power lines for communications |
PCT/US2003/033082 WO2004036813A2 (en) | 2002-10-17 | 2003-10-17 | Repeaters sharing a common medium for communications |
PCT/US2003/033080 WO2004036772A2 (en) | 2002-10-17 | 2003-10-17 | Arrangement of a data coupler for power line communications |
PCT/US2003/033188 WO2004036601A2 (en) | 2002-10-17 | 2003-10-17 | Highly insulated inductive data couplers |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2003/033081 WO2004036879A2 (en) | 2002-10-17 | 2003-10-17 | Filter for segmenting power lines for communications |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2003/033080 WO2004036772A2 (en) | 2002-10-17 | 2003-10-17 | Arrangement of a data coupler for power line communications |
PCT/US2003/033188 WO2004036601A2 (en) | 2002-10-17 | 2003-10-17 | Highly insulated inductive data couplers |
Country Status (11)
Country | Link |
---|---|
US (5) | US7005943B2 (en) |
EP (4) | EP1556947A4 (en) |
JP (4) | JP2006503504A (en) |
KR (4) | KR100991921B1 (en) |
CN (4) | CN1706175A (en) |
AU (3) | AU2003277439A1 (en) |
BR (4) | BR0315492A (en) |
CA (4) | CA2502122A1 (en) |
EA (4) | EA200500668A1 (en) |
MX (4) | MXPA05004087A (en) |
WO (4) | WO2004036879A2 (en) |
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