CA2906411C - System for efficient recovery of node b buffered data following serving high speed downlink shared channel cell change - Google Patents

System for efficient recovery of node b buffered data following serving high speed downlink shared channel cell change Download PDF

Info

Publication number
CA2906411C
CA2906411C CA2906411A CA2906411A CA2906411C CA 2906411 C CA2906411 C CA 2906411C CA 2906411 A CA2906411 A CA 2906411A CA 2906411 A CA2906411 A CA 2906411A CA 2906411 C CA2906411 C CA 2906411C
Authority
CA
Canada
Prior art keywords
node
rrc
rlc
dsch
cell change
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.)
Expired - Lifetime
Application number
CA2906411A
Other languages
French (fr)
Other versions
CA2906411A1 (en
Inventor
Yi-Ju Chao
Stephen E. Terry
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Apple Inc
Original Assignee
Intel Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Intel Corp filed Critical Intel Corp
Publication of CA2906411A1 publication Critical patent/CA2906411A1/en
Application granted granted Critical
Publication of CA2906411C publication Critical patent/CA2906411C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/02—Buffering or recovering information during reselection ; Modification of the traffic flow during hand-off
    • H04W36/023—Buffering or recovering information during reselection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1854—Scheduling and prioritising arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0072—Transmission or use of information for re-establishing the radio link of resource information of target access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/02—Buffering or recovering information during reselection ; Modification of the traffic flow during hand-off
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/34—Reselection control
    • H04W36/36—Reselection control by user or terminal equipment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/04—Interfaces between hierarchically different network devices
    • H04W92/10—Interfaces between hierarchically different network devices between terminal device and access point, i.e. wireless air interface
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/34—Reselection control
    • H04W36/38—Reselection control by fixed network equipment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/12—Access point controller devices

Abstract

The present invention relates to efficient recovery of High Speed Downlink Packet Access (HSDPA) data following handover. The present invention discloses a method and system for the UE to perform a serial of actions in order to reduce the latency and potentially prevent loss of PDU transmission during the serving HS-DSCH cell change procedure. A new criterion is introduced for UE generation of the status report of RLC PDU. The UE generates status report of the PDUs as soon as possible following notification of the HS-DSCH cell change indicated by the RRC procedure to more efficiently recover source Node B buffered data. PDU status may be signaled for each AM RLC instance associated with the HS-DSCH transport channel. Furthermore, upon Inter Node B serving HS-DSCH cell change the SRNC may wait for PDU status report before initiating transmission of new data in target cell.

Description

SYSTEM FOR EFFICIENT RECOVERY OF
NODE B BUFFERED DATA FOLLOWING SERVING
HIGH SPEED DOWNLINK SHARED CHANNEL CELL CHANGE
This application is a divisional of Canadian Patent Application Serial No.
2,644,202 which is a divisional of Canadian Patent Application Serial No.
2,481,270 filed internationally on April 2, 2003 and entered nationally on October 1, 2004.
FIELD OF INVENTION
The present invention relates to the field of wireless communications. More specifically, the present invention relates to efficient recovery of buffered data following handover in a wireless system that distributes data from an intermediate point. Third generation (3G) systems having a remote network controller (RNC) which is coupled to one or more Node Bs, which are in turn wirelessly coupled to a plurality of User Equipment (UEs), employing adaptive modulation and coding (AMC) and hybrid automatic repeat request (H-ARQ) techniques are just one example of this kind of system.
BACKGROUND
A 3G Universal Terrestrial Radio Access Network (UTRAN) comprises several RNCs, each of which can be coupled to several Node Bs. A node B is an entity comprising one or more base stations, each managing traffic for one or more cells.
The 3G FDD and TDD systems typically use the RNC to buffer and schedule data transmissions to the UE. However, for the high speed channels of 3G
cellular systems, data is buffered and scheduled for transmission by a Node B. One of these high speed channels, for example, is the High Speed Downlink Shared Channel (HS-DSCH).
Since data is distributed by the Node B, it is necessary to buffer data for transmission in Node B.
A result of this architecture is the RNC does not have an up-to-date status of the Node-B
controlled transmissions of Packet Data Units (PDU). Therefore, upon handover between cells, it is necessary to coordinate the scheduling of data transmissions with the cell change. Otherwise following the cell change it is necessary to resynchronize data transmission to avoid loss or duplication of transmitted data. In 3G
networks handover between cells is controlled by the RNC. Since the RNC that controls the cell the UE is in may change there is the possibility data may be lost or duplicated as a result of the handover. This problem is aggravated due to the architecture whereby there are several Node Bs associated with each RNC.
There is a much higher likelihood that a mobile UE will require a Node B
change than a change of RNC as a result of UE cell handovers.
The HS-DSCH utilizes AMC to enable high speed transmission of data and H-ARQ to increase the possibility of successful delivery of data. A
serving HS-DSCH cell change is when the UE has to change the cell associated with the UTRAN access point that is performing transmission and reception of the serving HS-DSCH radio link. The serving HS-DSCH cell change is invoked when improved physical channel conditions and/or improved physical capacity is realized in an alternate cell. Unlike other channels in 3G networks that terminate at RNC within the UTRAN, the HS-DSCH terminates at Node B.
There are two types of HS-DSCH cell changes. An Intra-Node B
serving HS-DSCH cell change is when the UE changes between two cells that are associated with the same Node B. An Inter-Node B serving HS-DSCH cell change is when the UE changes between two cells that are associated with different Node Bs. In an Inter-Node B cell change, the Node B before the serving HS-DSCH cell change is called the source Node B, and the Node B after the serving HS-DSCH cell change is called the target Node B.
There are peer Radio Link Control (RLC) entities in both the RNC
and the UE providing an automatic repeat request (ARQ) function for transmission of data. The sending RLC entity signals a sequence number (SN) in the PDU header, which is used by the receiving RLC entity to ensure that no PDUs are missed in the transmission. If there are PDUs missed during the transmission, realized by out-of-sequence delivery of PDUs, the receiving RLC
entity sends a status report PDU to inform the sending RLC entity that certain PDUs are missing. The status report PDU is used to describe the status of the data transmission. It identifies the SNs of the PDUs that are missed or received.

If a PDU is missed, the sending RLC entity will retransmit a duplicate of the missed PDU to the receiving RLC.
It is also possible for the sending RLC entity to poll for a status report PDU from the receiving RLC entity, or to generate status reports periodically. The polling function provides a mechanism for the sending RLC
entity to request the status of PDU transmissions.
A H-ARQ function in the Node B also provides for retransmission of failed transmissions. Although the H-ARQ operation removes some failed transmissions and increases the probability of successful delivery of data, it is the RLC protocol layer that ultimately ensures successful delivery.
Due to dynamic changes in propagation conditions, the HS-DSCH
cell change must be performed rapidly to maintain quality of service. During the serving HS-DSCH cell change, it is possible that the UE stops transmission and reception in the source cell before all PDUs currently stored in the source Node B
are successfully transmitted. Since the source Node B performs scheduling and buffering of the data, and since the data rates are very high, (for example 10 Mb/sec or higher), when the UE performs a serving HS-DSCH cell change, (especially for an Inter-Node B handover), there is a possibility that considerable amounts of data buffered in the source Node B will be lost. One reason for this data loss is that no mechanism exists within the UTRAN architecture for data buffered at the source Node B to be transferred to the target Node B. Upon serving a HS-DSCH cell change, the RNC has no information on how much, if any, data is lost since the RNC is not informed of Node B data transmission scheduling and if the transmission have been successfully acknowledged by the UE. Therefore when data is buffered in the source Node B upon serving HS-DSCH cell change to maintain transmission without loss of data, the RNC RLC
must recover this data.
There are currently two preferred ways that prior art systems handle the recovery of data buffered at the source Node B. Following the HS-DSCH cell change: 1) the RNC can explicitly request a status PDU from the UE;
or 2) the RNC can just start transmitting where it stopped in the source cell and out-of-sequence delivery realized by the UE will generate the status PDU.
-3-In the first case, where the RNC explicitly requests a status PDU by polling the UE, the RNC must first wait until the physical channel is established in the new cell. The status PDU request is then sent and is received and processed by the UE. The UE generates the status PDU and sends it back to the RNC, which processes the status PDU and determines which PDUs are in need of retransmission.
In the second case, where the RNC just starts transmitting PDUs from where it stopped in the source cell, the UE recognizes the out-of-sequence delivery of data and generates a status PDU back to the RNC. The RNC
processes the status PDU and learns which PDUs are in need of retransmission.
In either of these two cases, if data buffered in the source Node B
needs to be recovered, then a status PDU will be processed, but proper reception of retransmitted data by the UE will be considerably delayed. This is due to delayed generation of the status PDU by the UE and reception of the status PDU
in the RNC.
If transmission is being performed in RLC acknowledged mode, data is not passed to higher layers until in-sequence delivery of data can be performed.
Accordingly, the UE will be required to buffer the out-of-sequence data until the missing PDUs can be retransmitted. This not only results in a delay of the transmission, but requires the UE to have a memory which is sufficiently large enough to buffer data until the data stored in the source Node B can be successfully delivered. Otherwise, the effective data transmission rate is reduced, thereby effecting quality of service. Since memory is very expensive, this is an undesirable design constraint.
Accordingly, the prior art methods of recovering data that is buffered in a source Node B prior to transfer to a target Node B have very undesirable consequences. It is desirable to have a system and method where data buffered in the source Node B can be more efficiently recovered with less delay to properly maintain user quality of service requirements.
-4-SUMMARY
The present invention is a method and system which implement a series of actions in order to reduce latency, and potentially prevent loss of PDU
transmissions during the serving HS-DSCH cell change procedure. A new criterion is introduced for UE generation of the status report of RLC PDUs.
The UE autonomously generates status reports of the PDUs as soon as possible following notification of the HS-DSCH cell change indicated by the RRC
handover procedure to more efficiently recover source Node B buffered data.
PDU status may be signaled for each acknowledged mode (AM) RLC instance associated with the HS-DSCH transport channel.
According to a first broad aspect of the present invention, there is disclosed a user equipment (UE) comprising: a reordering buffer of a MAC-hs, the reordering buffer is flushed in response to a high speed-downlink shared channel (HS-DSCH) cell change; and at least one radio link control (RLC) instance mapped to the HS-DSCH which generates a status report, the status report indicates missing HS-DSCH packet data units (PDUs).
According to a second broad aspect of the present invention, there is disclosed a Node-B: the Node-B configured to initiate a flushing of a MAC-hs reordering buffer by a user equipment (UE) by informing the UE of a high speed-downlink shared channel (HS-DSCH) cell change; the Node-B
configured to receive a status report for at least one radio link control (RLC) instance mapped to the HS-DSCH in response to the informing the UE of the HS-DSCH cell change, the status report indicates missing HS-DSCH packet data units (PDUs).
According to a third broad aspect of the present invention, there is disclosed a method comprising: flushing a reordering buffer of a medium access controller ¨ high speed (MAC-hs), in response to a high speed ¨
downlink shared channel (HS-DSCH) cell change; and generating a status report of at least one radio link control (RLC) instance mapped to the HS-DSCH, the status report indicates missing HS-DSCH packet data units (PDUs), in response to the HS-DSCH cell change.
-5-According to a fourth aspect, there is provided a user equipment (UE) comprising:
transmitting and receiving components configured to receive a first radio resource control (RRC) handover message from a source NodeB indicative of a high speed-downlink shared channel (HS-DSCH) cell change; wherein the components are further configured, in response to the RRC handover message, to initiate handover to a target NodeB; wherein the components are further configured, in response to the RRC
handover message in an initial uplink data transmission to the target NodeB, to transmit a second RRC message along with a Packet Data Unit (PDU) status report associated with data to be recovered by the target NodeB for each Radio Link Control (RLC) entity associated with the high speed-downlink shared channel (HS-DSCH).
According to a fifth aspect, there is provide a method comprising: receiving, by a user equipment (UE), a first radio resource control (RRC) handover message from a source NodeB indicative of a high speed-downlink shared channel (HS-DSCH) cell change; in response to the RRC handover message, initiating, by the UE, a handover to a target NodeB; in response to the RRC handover message, transmitting, by the UE
in an initial uplink data transmission to the target NodeB, a second RRC message along with a Packet Data Unit (PDU) status report associated with data to be recovered by the target NodeB for each Radio Link Control (RLC) entity associated with the high speed-downlink shared channel (HS-DSCH).
According to a sixth aspect, there is provide a user equipment (UE) comprising: transmitting and receiving components configured to receive a radio resource control (RRC) handover message from a source Node B indicating a high speed dedicated shared channel (HS-DSCH) inter-Node B cell change, wherein the UE
and the source Node B utilize an HS-DSCH transport channel; wherein the components are further configured, in response to the RRC handover message, to initiate handover to a target Node B; wherein the components are further configured, in response to the RRC
handover message in an initial uplink data transmission to the target Node B, to transmit a second RRC message along with a status report, for each radio link control (RLC) instance associated with the HS-DSCH transport channel, comprising an RLC
status report indicating missing acknowledge mode (AM) RLC packet data units (PDUs).
- 5a -According to a seventh aspect, there is provide a method comprising:
receiving, by a user equipment (UE), a radio resource control (RRC) handover message from a source Node B indicating a high speed dedicated shared channel (HS-DSCH) inter-Node B cell change, wherein the UE and the source Node B utilize an HS-DSCH
transport channel; in response to the RRC handover message, initiating, by the UE, a handover to a target Node B; and in response to the RRC handover message, transmitting, by the UE in an initial uplink data transmission to the target Node B, a second RRC
message along with a status report, for each radio link control (RLC) instance associated with the HS-DSCH transport channel, comprising an RLC status report indicating missing acknowledge mode (AM) RLC packet data units (PDUs).
Further aspects of the invention will become apparent upon reading the following detailed description and drawings, which illustrate the invention and preferred embodiments of the invention.
- 5b -BRIEF DESCRIPTION OF THE DRAWING(S) Figure 1 is a flow diagram of an efficient procedure in accordance with the present invention for efficient recovery of Node B buffered data following an HS-DSCH cell change.
Figure 2 is a flow diagram of an alternative method whereby the RNC waits for a status PDU prior to initiating a transmission of new data in the target cell.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT(S) The preferred embodiment of the present invention will be described with reference to the drawing figures wherein like numerals represent like elements throughout.
According to the present invention, in order to reduce the latency for the RNC to obtain the status of the PDUs and recover data buffered in the source Node B, after the serving HS-DSCH cell change, the UE
autonomously sends the status of the PDUs to the RNC following notification of the HS-DSCH cell change indicated by the RRC procedure. The generation of PDU status may be applied for each AM RLC instance associated with the HS-DSCH transport channel.
Referring to the flow diagram of Figure 1, a method 10 of efficiently recovering Node B buffered data in accordance with the present invention is shown. The RNC recognizes the need for the serving HS-DSCH cell change (step 12). The Node B is then informed of the serving HS-DSCH cell change (step 14).

The UE is informed of the serving HS-DSCH cell change, as indicated via the RRC Request message (step 16). It should be noted that it is also possible to invoke step 16 in advance of step 14 with no adverse consequences.
Once the RRC Request message is received by the UE in step 18, in order to reduce delay in recovering data buffered in the source Node B, the UE

autonomously generates a status report (step 20) indicating the RLC PDU status as soon as possible following notification of the HS-DSCH cell change indicated by the RRC procedure. The UE does not wait for any of the prior art triggers for
-6-, generating a status PDU, (for example, either a request by the RNC to generate a status PDU or the detection by the UE of out-of-sequence delivery of data).
In the UE, there are many different alternative methods that the UE may implement to trigger the generation of a PDU status report following a serving HS-DSCH cell change. However, several examples are presented herein.
Preferably, as a first option, the MAC-hs informs the RLC once its reordering buffers are flushed. A second option is that the RRC informs the RLC of the Level 3 (L3) RRC procedure indicating the serving HS-DSCH cell change. Third, the physical layer can inform the RLC of the reception of HS-DSCH control channels in the target cell, or the physical layer can inform the RLC upon switch over of HS-DSCH control to the target cell. One skilled in the art would certainly realize that there may be other methods for triggering the RLC PDU status message to be sent from the UE to the RNC. As a result of this procedure, the PDU status is generated and sent to the RNC (step 22) with less delay, which results in more efficient recovery of source Node B buffered data.
In accordance with step 22, there are several alternatives for the UE
to send the status report of the PDUs to the RNC. These methods of sending the status PDU are examples of how the status PDU can be signaled from the UE to the RNC and are not primary to the invention, which relates to generating a status PDU upon a new criterion. Preferably, the UE generates a RLC status report for each AM RLC instance mapped to the HS-DSCH transport channel.
In a second alternative, the UE sends the PDU status report via the first existing uplink message from the UE to the RNC as soon as a status report is obtained. For Intra-Node B serving cell changes, (and assuming that the HS-DSCH transport channel and radio bearer parameters are not changed), the message is "PHYSICAL CHANNEL RECONFIGURATION COMPLETE" on the DCCH. If the HS-DSCH transport channel and radio bearer parameters are changed and/or for Inter-Node B serving cell changes, the message is "TRANPSORT CHANNEL RECONFIGURATION COMPLETE" on the DCCH.
The PDU status can be identified in any RRC signaling message. The RNC RRC
entity then informs the status of the PDUs to the RLC to resume the transmission to the target Node B.
-7-In a third alternative, the UE sends the status report on a new L3 signaling message on DCCH from the UE to the RNC. This new message is sent from the Radio Resource Control (RRC) layer of the UE to the RRC layer of the RNC. The RNC then informs the status of the PDUs to the RLC layer to resume the transmission to the target Node B. In this case, the PDU status message shown in Figure 1 may comprise two separate messages "RRC Complete and "RLC Status".
It should be noted that the specific format of the status report of the PDUs can vary. For example, the format of the status reports of the PDUs may include: 1) the sequence number (SN) of the last in-sequence successfully delivered PDUs; 2) the highest SN of the PDUs received successfully; 3) the SNs of the PDUs that are not received successfully, (i.e., missed PDUs) up to the highest SN of the PDU that are received successfully; 4) or a list of list the SNs of the PDUs that are received successfully.
Once the RNC receives the message carrying the PDU status, the PDU status message is processed by the RNC RLC (step 24) to determine the missed PDUs. The data lost as a result of the cell change is now realized by the RNC and can be retransmitted to the UE (step 26). It should be noted that the message can be of many alternatives, and is not necessarily limited to just carrying the PDU status report.
It should also be noted that in this embodiment of the present invention, the RNC, between steps 16 and 24, may continue to forward data in the target cell for transmission to the UE. Since the data will be out-of-sequence if all source Node B buffered data has not been successfully transmitted, the UE
RLC will be forced to buffer the data to maintain in-sequence delivery to higher layers. This requires the UE to have sufficient memory to store the out-of-sequence PDUs. Following any loss of sequential data, transmission is limited to the UE memory capability until the lost sequential data is successfully transmitted.
Referring to the flow diagram of Figure 2, a method 40 of efficiently recovering Node B buffered data in accordance with an alternative embodiment of the present invention is shown. This method 40 is similar to the method 10
-8-shown in Figure 1, and the steps of Figure 2 that are labeled the same as in Figure 1 are identical. However, in accordance with this embodiment of the present invention, the method 40 includes a new step 17 whereby the RNC halts all downlink HS-DSCH transmissions to the UE until the PDU status message is processed at step 24. This embodiment minimizes delay for retransmission of source Node B buffered data and limits the amount of data that must be buffered at the UE.
With respect to the minimization of delay, the Node B is unaware of RLC transmission sequence numbers and transmission scheduling within Node B
is FIFO-based. Therefore, if data is forwarded by the RNC in the target cell before the PDU status is processed, it will be sent first. This data queuing in Node B results in a possibly further delay of retransmission of the source Node B
buffered data.
The present invention may be applicable to both the HS-DSCH cell change in Inter-Node B cell changes and Intra-Node B cell changes. Since in the Intra-Node B case it may not be possible for the Node B to redirect the buffered HS-DSCH data to the target cell due to internal design issues, the RNC may indicate the need for generation of PDU status for both cases. It is also possible that the UE may be unable to distinguish between an Inter-Node B cell change and an Intra-Node B cell change, which would also result in generation of PDU
status for both Inter and Intra cases. The status PDU sent in such a fashion will be useful in the Inter-Node B cell change or Intra-Node B case where the buffered data cannot be switched to the target cell.
Although the present invention has been described in detail, it is to be understood that the invention is not limited thereto, and that various changes can be made therein.
- 9 -

Claims (8)

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:
1. A user equipment (UE) comprising:
transmitting and receiving components configured to receive a radio resource control (RRC) handover message from a source Node B indicating a high speed dedicated shared channel (HS-DSCH) inter-Node B cell change, wherein the UE and the source Node B utilize an HS-DSCH transport channel;
wherein the components are further configured, in response to the RRC handover message, to initiate handover to a target Node B;
wherein the components are further configured, in response to the RRC handover message in an initial uplink data transmission to the target Node B, to transmit a second RRC message along with a status report, for each radio link control (RLC) instance associated with the HS-DSCH transport channel, comprising an RLC status report indicating missing acknowledge mode (AM) RLC packet data units (PDUs).
2. The UE of claim 1 further comprising:
a medium access control (MAC) entity; wherein the components are further configured in response to the RRC handover message to flush at least one buffer of the MAC entity.
3. The UE of claim 2, wherein the MAC entity comprises a medium access controller-high speed (MAC-hs) entity.
4. The UE of claim 1 wherein the components are further configured in response to the second RRC message to receive RLC PDUs from the target NodeB including RLC

PDUs buffered in the source Node B which were not successfully transmitted to the UE.
5. A method comprising:
receiving, by a user equipment (UE), a radio resource control (RRC) handover message from a source Node B indicating a high speed dedicated shared channel (HS-DSCH) inter-Node B cell change, wherein the UE and the source Node B utilize an HS-DSCH transport channel;

in response to the RRC handover message, initiating, by the UE, a handover to a target Node B; and in response to the RRC handover message, transmitting, by the UE in an initial uplink data transmission to the target Node B, a second RRC message along with a status report, for each radio link control (RLC) instance associated with the HS-DSCH
transport channel, comprising an RLC status report indicating missing acknowledge mode (AM) RLC packet data units (PDUs).
6. The method of claim 5 further comprising in response to the RRC handover message, flushing, by the UE, at least one buffer of a medium access control (MAC) entity of the UE.
7. The method of claim 6, wherein the MAC entity of the UE comprises a medium access controller-high speed (MAC-hs) entity.
8. The method of claim 5 wherein in response to the second RRC message, the UE
receives RLC PDUs from the target NodeB including RLC PDUs buffered in the source NodeB which were not successfully transmitted to the UE.
CA2906411A 2002-04-05 2003-04-02 System for efficient recovery of node b buffered data following serving high speed downlink shared channel cell change Expired - Lifetime CA2906411C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US37074002P 2002-04-05 2002-04-05
US60/370,740 2002-04-05
US10/334,489 2002-12-30
US10/334,489 US6717927B2 (en) 2002-04-05 2002-12-30 System for efficient recovery of node B buffered data following serving high speed downlink shared channel cell change
CA2644202A CA2644202C (en) 2002-04-05 2003-04-02 System for efficient recovery of node b buffered data following serving high speed downlink shared channel cell change

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA2644202A Division CA2644202C (en) 2002-04-05 2003-04-02 System for efficient recovery of node b buffered data following serving high speed downlink shared channel cell change

Publications (2)

Publication Number Publication Date
CA2906411A1 CA2906411A1 (en) 2003-10-23
CA2906411C true CA2906411C (en) 2017-03-21

Family

ID=28678120

Family Applications (3)

Application Number Title Priority Date Filing Date
CA2906411A Expired - Lifetime CA2906411C (en) 2002-04-05 2003-04-02 System for efficient recovery of node b buffered data following serving high speed downlink shared channel cell change
CA2644202A Expired - Lifetime CA2644202C (en) 2002-04-05 2003-04-02 System for efficient recovery of node b buffered data following serving high speed downlink shared channel cell change
CA002481270A Expired - Lifetime CA2481270C (en) 2002-04-05 2003-04-02 System for efficient recovery of node b buffered data following serving high speed downlink shared channel cell change

Family Applications After (2)

Application Number Title Priority Date Filing Date
CA2644202A Expired - Lifetime CA2644202C (en) 2002-04-05 2003-04-02 System for efficient recovery of node b buffered data following serving high speed downlink shared channel cell change
CA002481270A Expired - Lifetime CA2481270C (en) 2002-04-05 2003-04-02 System for efficient recovery of node b buffered data following serving high speed downlink shared channel cell change

Country Status (22)

Country Link
US (8) US6717927B2 (en)
EP (2) EP3002971B1 (en)
JP (4) JP3784805B2 (en)
KR (8) KR101044649B1 (en)
CN (3) CN101702819B (en)
AR (1) AR039619A1 (en)
AT (1) ATE407519T1 (en)
AU (1) AU2003224820B2 (en)
BR (1) BRPI0308959B1 (en)
CA (3) CA2906411C (en)
DE (2) DE60323350D1 (en)
DK (1) DK1493288T3 (en)
ES (2) ES2639131T3 (en)
GE (2) GEP20063990B (en)
HK (4) HK1055211A2 (en)
IL (3) IL164415A (en)
MX (1) MXPA04009742A (en)
MY (3) MY143067A (en)
NO (2) NO328029B1 (en)
SG (1) SG165989A1 (en)
TW (6) TWI430676B (en)
WO (1) WO2003087978A2 (en)

Families Citing this family (133)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE0101846D0 (en) * 2001-05-22 2001-05-22 Ericsson Telefon Ab L M Method and system of retransmission
US7376879B2 (en) * 2001-10-19 2008-05-20 Interdigital Technology Corporation MAC architecture in wireless communication systems supporting H-ARQ
US8619718B2 (en) 2002-04-05 2013-12-31 Interdigital Technology Corporation Method and apparatus for coordinating a radio network controller and node B resource management for high speed downlink packet data service
US6717927B2 (en) * 2002-04-05 2004-04-06 Interdigital Technology Corporation System for efficient recovery of node B buffered data following serving high speed downlink shared channel cell change
US6973579B2 (en) 2002-05-07 2005-12-06 Interdigital Technology Corporation Generation of user equipment identification specific scrambling code for the high speed shared control channel
TWI357744B (en) 2002-05-10 2012-02-01 Interdigital Tech Corp Cognitive flow control based on channel quality co
KR20030092894A (en) * 2002-05-31 2003-12-06 삼성전자주식회사 Apparatus for determining report period of channel quality in communication system using high speed data packet access scheme and method thereof
US7706405B2 (en) * 2002-09-12 2010-04-27 Interdigital Technology Corporation System for efficient recovery of Node-B buffered data following MAC layer reset
EP2393250A1 (en) 2002-12-04 2011-12-07 Interdigital Technology Corporation Reliability detection of channel quality indicator (CQI) and application to outer loop power control
US20040264475A1 (en) * 2003-06-30 2004-12-30 The Nature Of The Conveyance Class of high throughput MAC architectures for multi-channel CSMA systems
EP2017992B1 (en) * 2003-08-25 2020-04-22 Signal Trust for Wireless Innovation Enhanced uplink operation in soft handover
US7046648B2 (en) 2003-11-05 2006-05-16 Interdigital Technology Corporation Wireless communication method and apparatus for coordinating Node-B's and supporting enhanced uplink transmissions during handover
US8102788B2 (en) * 2003-11-05 2012-01-24 Interdigital Technology Corporation Method and wireless transmit/receive unit for supporting an enhanced uplink dedicated channel inter-node-B serving cell change
KR20050046307A (en) * 2003-11-13 2005-05-18 삼성전자주식회사 Method for managementing resource in a mobile communication system using high-speed packet data service
KR100520146B1 (en) * 2003-12-22 2005-10-10 삼성전자주식회사 Method for processing data in high speed downlink packet access communication system
US8018945B2 (en) * 2004-04-29 2011-09-13 Interdigital Technology Corporation Method and apparatus for forwarding non-consecutive data blocks in enhanced uplink transmissions
KR101013227B1 (en) * 2004-06-21 2011-02-10 노키아 코포레이션 Recovery method for lost signaling connection with HSDPA/fractional DPCH
JP4669003B2 (en) * 2004-09-29 2011-04-13 ノキア コーポレイション Active Set Update (ASU) with High Speed Downlink Shared Channel (HS-DSCH) information
JP2006174279A (en) * 2004-12-17 2006-06-29 Fujitsu Ltd Radio base station and mobile station
JP4929590B2 (en) * 2004-12-17 2012-05-09 富士通株式会社 Mobile station and mobile station communication method
CN100589342C (en) 2004-12-21 2010-02-10 三星电子株式会社 Apparatus and method for transmitting data in a communication system
CN100397946C (en) * 2004-12-28 2008-06-25 华为技术有限公司 Method for allocating down going sharing channel in high speed
CN100421508C (en) * 2005-01-07 2008-09-24 华为技术有限公司 Switching control method for rapid physical downlink shared channel service cell
CN1855887A (en) * 2005-04-29 2006-11-01 华硕电脑股份有限公司 Method and apparatus for polling transmission status in a wireless communication system
DK1891824T3 (en) * 2005-06-03 2013-03-11 Ericsson Telefon Ab L M Cell shifts in cellular networks
US20060280145A1 (en) * 2005-06-10 2006-12-14 Revel Agnes M Event trigger for scheduling information in wireless communication networks
CN100574178C (en) * 2005-07-04 2009-12-23 上海原动力通信科技有限公司 Realize equipment, the system and method for multi-carrier-wave high-speed down-converter grouped accessing business
KR101084142B1 (en) * 2005-08-25 2011-11-17 엘지전자 주식회사 Method for transmitting and receiving data on downlink shared channel
CN100417286C (en) * 2005-09-04 2008-09-03 华为技术有限公司 Updating method and device for high speed down shared channel service cell
WO2007032649A1 (en) * 2005-09-15 2007-03-22 Samsung Electronics Co., Ltd. Method and apparatus for transmitting and receiving status report comprising received status of packet data in a mobile communication system
KR100866225B1 (en) * 2005-10-05 2008-10-30 삼성전자주식회사 Method And Apparatus for Fast Cell Selection for High Speed Downlink Packet Access System
GB2431070B (en) * 2005-10-06 2008-02-13 Samsung Electronics Co Ltd Mobile communications
CN100571107C (en) * 2005-10-10 2009-12-16 华为技术有限公司 A kind of detection method of data-bag lost and checkout gear
KR100929082B1 (en) 2005-10-12 2009-11-30 삼성전자주식회사 Method and apparatus for transmitting / receiving control information of terminal for reverse data transmission
US7768962B2 (en) * 2005-11-01 2010-08-03 Nokia Corporation HSUPA HARQ process flushing
JP2007129593A (en) * 2005-11-04 2007-05-24 Ntt Docomo Inc Data transfer method and base station
CN100442773C (en) * 2005-11-07 2008-12-10 华为技术有限公司 A method to transmit IP message by high speed downlink packet access technology of HSDPA
CN1992961B (en) * 2005-12-28 2010-09-15 北京信威通信技术股份有限公司 Method of signaling connection in digital mobile communication systems
AU2007203861B2 (en) 2006-01-05 2009-11-26 Interdigital Patent Holdings, Inc. Transmitting information in mobile communications system
KR101203841B1 (en) 2006-01-05 2012-11-21 엘지전자 주식회사 Method of transmitting and receiving paging message in wireless communication system
KR101211807B1 (en) 2006-01-05 2012-12-12 엘지전자 주식회사 Method for managing synchronization state for mobile terminal in mobile communication system
AU2007203852B2 (en) 2006-01-05 2010-08-26 Lg Electronics Inc. Transmitting data in a mobile communication system
KR101333918B1 (en) 2006-01-05 2013-11-27 엘지전자 주식회사 Point-to-multipoint service communication of mobile communication system
JP4806030B2 (en) 2006-01-05 2011-11-02 エルジー エレクトロニクス インコーポレイティド Method for transferring signals in a mobile communication system
WO2007078171A2 (en) 2006-01-05 2007-07-12 Lg Electronics Inc. Method of transmitting feedback information in a wireless communication system
KR101187076B1 (en) 2006-01-05 2012-09-27 엘지전자 주식회사 Method for transmitting signals in the moblie communication system
KR101268200B1 (en) 2006-01-05 2013-05-27 엘지전자 주식회사 Radio resource allocating method in mobile communication system
KR100912784B1 (en) 2006-01-05 2009-08-18 엘지전자 주식회사 Data transmission method and data retransmission method
CN101356847B (en) * 2006-01-09 2012-07-11 艾利森电话股份有限公司 Node and method relating to switch of mobile communication
CN100466782C (en) * 2006-01-19 2009-03-04 华为技术有限公司 Soft switching property evaluating method for supporting HSUPA and mobile terminal
CN101379846B (en) * 2006-02-06 2012-07-04 日本电气株式会社 Mobile communication system, base station control device, mobile device, handover control method, and program
KR101216751B1 (en) 2006-02-07 2012-12-28 엘지전자 주식회사 Method for avoiding collision using identifier in mobile network
KR101078148B1 (en) 2006-02-07 2011-10-28 닛본 덴끼 가부시끼가이샤 Mobile communication system, wireless base station controller, and relocation method
KR101358469B1 (en) 2006-02-07 2014-02-06 엘지전자 주식회사 Method for selection and signaling of downlink and uplink bandwidth in wireless networks
ATE498983T1 (en) * 2006-02-24 2011-03-15 Ericsson Telefon Ab L M TECHNIQUE FOR CONFIGURING TRACK LAYER ENTITIES FOR A HANDOVER
CN100426799C (en) * 2006-02-28 2008-10-15 华为技术有限公司 Access hard switchover method and system of high speed downlink packet
US8879500B2 (en) 2006-03-21 2014-11-04 Qualcomm Incorporated Handover procedures in a wireless communications system
US8620328B2 (en) * 2006-03-21 2013-12-31 Qualcomm Incorporated Handover procedures in a wireless communications system
KR101387475B1 (en) * 2006-03-22 2014-04-22 엘지전자 주식회사 method of processing data in mobile communication system having a plurality of network entities
JP4802804B2 (en) * 2006-03-27 2011-10-26 日本電気株式会社 Data transmission method and system in mobile communication system
CN100438445C (en) * 2006-05-22 2008-11-26 华为技术有限公司 Radio network management system and method for WiMAX network
CN101083518B (en) * 2006-05-30 2011-08-17 中兴通讯股份有限公司 Method for retransmitting downlink and uplink distributed data
TWI411326B (en) * 2006-06-09 2013-10-01 Ericsson Telefon Ab L M Cell change method, manager and controller and related network node and mobile user terminal
GB2439123B (en) * 2006-06-15 2008-05-14 Nec Technologies Handover in mobile phone network
JP2007336389A (en) * 2006-06-16 2007-12-27 Fujitsu Ltd Mobile communication system, and data retransmission control method thereof
US20070293254A1 (en) * 2006-06-19 2007-12-20 Innovative Sonic Limited Method and apparatus for uplink data handling upon handover in a wireless communications system
KR20070121513A (en) 2006-06-21 2007-12-27 엘지전자 주식회사 Uplink access method of mobile communication system
EP2033341B1 (en) 2006-06-21 2018-03-21 LG Electronics Inc. Method of transmitting and receiving radio access information using a message separation in a wireless mobile communications system
WO2007148881A2 (en) 2006-06-21 2007-12-27 Lg Electronics Inc. Method of supporting data retransmission in a mobile communication system
KR20070121505A (en) 2006-06-21 2007-12-27 엘지전자 주식회사 Method for reconfiguring radio link
KR101369135B1 (en) 2006-06-21 2014-03-05 엘지전자 주식회사 Mehtod for supproting quality of multimeida broadcast multicast service(mbms) in mobile communications system and terminal thereof
CN100459743C (en) * 2006-07-03 2009-02-04 华为技术有限公司 High-speed downlink packet access service scheduling method
WO2008017196A1 (en) * 2006-07-25 2008-02-14 Utstarcom Telecom Co., Ltd. Method for realizing cell change of serving hs-dsch between node b in hsdpa system, the telecommunication system for realiing the method and program product including program instructions for realizing the method
EP2055129B1 (en) * 2006-08-25 2017-08-09 Telefonaktiebolaget LM Ericsson (publ) A method, a network node and a user equipment in a telecommunication system
CN101141781B (en) * 2006-09-08 2010-04-21 大唐移动通信设备有限公司 Inter-cell switch method in base station and data transmission device in switch process
WO2008035935A1 (en) * 2006-09-20 2008-03-27 Samsung Electronics Co., Ltd. Handover method and apparatus in a mobile communication system
CN101166344B (en) * 2006-10-18 2011-04-20 鼎桥通信技术有限公司 Selection method of data recovery mode and radio network controller
EP2079244A4 (en) * 2006-11-02 2013-06-05 Ntt Docomo Inc Mobile communication system, radio base station, and handover control method
CN101193425B (en) * 2006-11-30 2011-03-16 北京信威通信技术股份有限公司 Method and system for CDMA system terminal to realize remote switch under TDD
US8660085B2 (en) * 2006-12-04 2014-02-25 Qualcomm Incorporated Methods and apparatus for transferring a mobile device from a source eNB to a target eNB
WO2008076073A1 (en) * 2006-12-19 2008-06-26 Telefonaktiebolaget Lm Ericsson (Publ) Transfer of buffered data from a source base station to a target base station
KR101494727B1 (en) * 2007-02-02 2015-02-25 인터디지탈 테크날러지 코포레이션 Method and apparatus for controlling a handover between utra r6 cells and r7 cells
EP2116087B1 (en) 2007-02-02 2013-01-02 Interdigital Technology Corporation Cell reselection/ update while in an enhanced cell_fach state
GB0702169D0 (en) 2007-02-05 2007-03-14 Nec Corp Resource Allocation
EP1954090A1 (en) * 2007-02-05 2008-08-06 Alcatel Lucent A method for handover of a user terminal
US8009727B2 (en) 2007-02-20 2011-08-30 Telefonaktiebolaget Lm Ericsson (Publ) Equalizer for single carrier FDMA receiver
US8619752B2 (en) * 2007-03-16 2013-12-31 Qualcomm Incorporated Method and apparatus for polling in a wireless communication system
US8130706B2 (en) 2007-03-16 2012-03-06 Interdigital Technology Corporation Wireless communication method and apparatus for supporting reconfiguration of radio link control parameters
EP2153686A2 (en) 2007-04-30 2010-02-17 InterDigital Technology Corporation Handling cell reselections and transitions to and from an enhanced cell_fach state
GB2449629A (en) 2007-05-01 2008-12-03 Nec Corp Buffering numbered unsegmented PDCP SDUs in 3GPP system to assist efficient hard handover
US8451795B2 (en) * 2007-08-08 2013-05-28 Qualcomm Incorporated Handover in a wireless data packet communication system that avoid user data loss
NZ582739A (en) 2007-08-13 2012-11-30 Qualcomm Inc Indicating last data packet received in order at a source base station and retransmitting missing packets
US7948962B2 (en) * 2007-08-31 2011-05-24 Wireless Technology Solutions Llc Cellular communication system, apparatus and method for management of backhaul resources
CN101389119B (en) * 2007-09-11 2012-09-05 电信科学技术研究院 Data retransmission method and device in process of LTE system cell switching
EP2051454A1 (en) 2007-10-17 2009-04-22 Nokia Siemens Networks Oy Method and device for data communication and communication system comprising such device
JP4940117B2 (en) * 2007-12-06 2012-05-30 株式会社東芝 Mobile communication system, gateway device thereof, concentrator, and handover control method
KR101460359B1 (en) * 2007-12-13 2014-11-10 삼성전자주식회사 Method and apparatus for handover in mobile telecommunication system
KR100919056B1 (en) * 2007-12-17 2009-09-24 한국전자통신연구원 Apparatus and method for optimizing a report-time in a mobile communication system
WO2009088346A1 (en) * 2008-01-08 2009-07-16 Telefonaktiebolaget L M Ericsson (Publ) Method and arrangement in a communication network
JP5055436B2 (en) 2008-02-01 2012-10-24 インターデイジタル パテント ホールディングス インコーポレイテッド Method and apparatus for serving fast downlink shared channel cell change
US8532032B2 (en) 2008-03-18 2013-09-10 Blackberry Limited Dynamic scheduling overwriting of semi-persistent allocation in an uplink
EP2286616A2 (en) * 2008-04-25 2011-02-23 Interdigital Patent Holdings, Inc. Method and apparatus for cell reselection in a mobile communications network
KR101411024B1 (en) * 2008-05-08 2014-06-23 삼성전자주식회사 Apparatus and method for transmitting coexistence beacon protocol packet in cognitive radio-based wireless communication system
CA2665662C (en) * 2008-05-10 2015-02-03 Research In Motion Limited Method and system for transitioning between radio access technologies (rats)
US20100027503A1 (en) * 2008-07-31 2010-02-04 Qualcomm Incorporated Method and apparatus for reducing data loss during handover in a wireless communication system
KR101578631B1 (en) 2008-08-08 2015-12-17 인터디지탈 패튼 홀딩스, 인크 Method and apparatus for performing serving high speed downlink shared channel cell change
JPWO2010070699A1 (en) * 2008-12-15 2012-05-24 富士通株式会社 Data transmission method
WO2010075892A1 (en) * 2008-12-30 2010-07-08 Telefonaktiebolaget L M Ericsson (Publ) Apparatus and method for improved handover performance
EP2443870B1 (en) * 2009-06-17 2014-10-15 InterDigital Patent Holdings, Inc. Method and apparatus for performing handover with a relay node
US8848623B2 (en) 2009-08-21 2014-09-30 Blackberry Limited System and method for channel timing offset
US9030940B2 (en) 2010-03-22 2015-05-12 Telefonaktiebolaget L M Ericsson (Publ) Apparatus and method in a telecommunications network
JP5147898B2 (en) * 2010-06-10 2013-02-20 株式会社エヌ・ティ・ティ・ドコモ Radio control apparatus and communication control method
US20110317642A1 (en) * 2010-06-25 2011-12-29 Qualcomm Incorporated System and process for transmission sequence number management in an intra-node b unsynchronized serving cell change
US9590771B2 (en) * 2011-09-30 2017-03-07 Nokia Solutions And Networks Oy Interruptions in wireless communications
WO2013075281A1 (en) * 2011-11-22 2013-05-30 华为技术有限公司 Cell state reporting method and device
US8958331B2 (en) 2012-07-02 2015-02-17 Intel Corporation HARQ-ACK handling for unintended downlink sub-frames
TWI473462B (en) * 2012-07-09 2015-02-11 Ind Tech Res Inst Method for performing hybrid automatic repeat request, base station and mobile device thereof
CN103546254B (en) 2012-07-09 2017-09-15 财团法人工业技术研究院 Method for performing hybrid automatic repeat request, and base station and mobile device thereof
US9237564B2 (en) * 2013-04-17 2016-01-12 Qualcomm Incorporated Enhanced reconfiguration procedure at a mobile terminal to reduce signaling and power consumption overhead
US9648514B2 (en) 2013-08-09 2017-05-09 Blackberry Limited Method and system for protocol layer enhancements in data offload over small cells
EP3105961B1 (en) 2014-02-14 2019-12-11 Telefonaktiebolaget LM Ericsson (publ) Rbs, rnc and respective methods performed thereby for transmitting data to a ue
US20150304061A1 (en) * 2014-04-21 2015-10-22 Qualcomm Incorporated Synchronization at a radio link control (rlc) layer entity
US10009908B2 (en) * 2015-01-30 2018-06-26 Telefonaktiebolaget Lm Ericsson (Publ) Methods of operating wireless terminals and network nodes using high speed vehicle network indicators and related wireless terminals and network nodes
CN105025505B (en) * 2015-07-31 2019-02-26 Tcl移动通信科技（宁波）有限公司 A kind of mobile terminal access point download control method and system
CN109156022B (en) 2016-06-22 2022-08-09 英特尔公司 Communication device and method for full duplex scheduling
US10694444B2 (en) * 2017-01-05 2020-06-23 Sharp Laboratories Of America, Inc. UE-based expedited handoff
EP3689028A4 (en) 2017-09-28 2020-10-14 ZTE Corporation Mobility management in wireless networks
US20200092045A1 (en) * 2018-01-10 2020-03-19 Telefonaktiebolaget Lm Ericsson (Publ) Radio Node and Methods in a Wireless Communications Network
EP3713286B1 (en) * 2018-01-12 2022-06-22 Huawei Technologies Co., Ltd. Data processing method and related device
CN110035453B (en) 2018-01-12 2022-05-13 华为技术有限公司 Data processing method and related equipment
CN108650258B (en) * 2018-05-09 2021-03-02 东南大学 Self-adaptive method for AM entity data transmission of narrow-band Internet of things wireless link protocol sublayer
US11052329B1 (en) 2020-06-11 2021-07-06 Jerry D. Janssen Launder cover system
CN112422239B (en) * 2020-11-17 2022-11-01 展讯半导体(成都)有限公司 Communication processing method, device, apparatus and storage medium

Family Cites Families (82)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1447025A (en) * 1913-08-01 1923-02-27 Jeffrey Mfg Co Hoisting apparatus
US1233638A (en) * 1915-08-25 1917-07-17 William Bertram Bolles Gun-support.
US1263129A (en) * 1916-11-15 1918-04-16 Adolph E Schroeder Glazier's tool.
ES2115636T3 (en) 1992-09-18 1998-07-01 Alsthom Cge Alcatel CELL RESCUENCIATION SYSTEM FOR A TELECOMMUNICATION NETWORK.
US5673307A (en) 1994-02-17 1997-09-30 Spectralink Corporation Handoff method for indoor cellular phone system
US5471207A (en) 1994-02-23 1995-11-28 Ricoh Company Ltd. Compression of palettized images and binarization for bitwise coding of M-ary alphabets therefor
US5751719A (en) * 1995-11-30 1998-05-12 Lucent Technologies Inc. Method and system for data transfer in the presence of disconnects
FI102654B1 (en) 1996-02-22 1999-01-15 Nokia Mobile Phones Ltd A method for changing a base station in an ATM network radio extension
US5940381A (en) 1996-03-14 1999-08-17 Motorola, Inc. Asynchronous transfer mode radio communications system with handoff and method of operation
JP3369063B2 (en) 1996-10-18 2003-01-20 松下電器産業株式会社 Mobile communication terminal
US6605057B2 (en) * 1996-10-24 2003-08-12 Medtronic Ave, Inc. Reinforced monorail balloon catheter
US5763307A (en) * 1996-11-08 1998-06-09 Advanced Micro Devices, Inc. Block select transistor and method of fabrication
US5974036A (en) 1996-12-24 1999-10-26 Nec Usa, Inc. Handoff-control technique for wireless ATM
US5987326A (en) * 1997-02-11 1999-11-16 Qualcomm Incorporated Transmit power reduction for a high speed CDMA link in soft handoff
FI109503B (en) * 1997-04-15 2002-08-15 Nokia Corp Prevention of packet loss during handover in a packet-based telecommunications network and handover procedure
CA2411996C (en) * 1997-04-24 2009-09-08 Ntt Mobile Communications Network Inc. Method and system for mobile communications
FI107498B (en) 1997-06-30 2001-08-15 Nokia Networks Oy Defining carrier service parameter in a radio access network
CA2267367C (en) 1997-09-30 2002-07-30 Mitsubishi Denki Kabushiki Kaisha Mobile station with down-link frame numbering
US6230013B1 (en) * 1997-11-26 2001-05-08 Telefonaktiebolaget Lm Ericsson (Publ) Diversity handling moveover for CDMA mobile telecommunications
US6181940B1 (en) 1998-02-10 2001-01-30 Telefonaktiebolaget Lm Ericsson (Publ) Methods and apparatus for location area scheme negotiation in communications systems
CA2261548A1 (en) 1998-03-06 1999-09-06 Lucent Technologies Inc. Time division multiple access communication system
JP3286247B2 (en) 1998-05-08 2002-05-27 松下電器産業株式会社 Wireless communication system
JP3075260B2 (en) * 1998-05-20 2000-08-14 日本電気株式会社 Buffering control method and buffering system
GB9815886D0 (en) * 1998-07-21 1998-09-16 Nokia Telecommunications Oy Method and apparatus for the transmission of packets of data
JP2000059459A (en) 1998-08-11 2000-02-25 Canon Inc Data communication device, data communication system, data communication method, and storage medium
US6546001B1 (en) 1998-08-14 2003-04-08 Samsung Electronics Co., Ltd. Medium access control message acknowledgment system and method of operation thereof
US6131030A (en) 1998-08-19 2000-10-10 Telefonaktiebolaget Lm Ericsson System network and method for the transference of cell handover information
US6226274B1 (en) 1998-09-24 2001-05-01 Omnipoint Corporation Method and apparatus for multiple access communication
JP3275849B2 (en) 1998-10-05 2002-04-22 日本電気株式会社 Cell flow synchronization establishment method for wireless ATM access system
JP3202698B2 (en) * 1998-10-27 2001-08-27 新潟日本電気株式会社 Wet image forming device
JP3719867B2 (en) * 1999-02-04 2005-11-24 株式会社沖データ Printer and control method thereof
US6445917B1 (en) * 1999-05-19 2002-09-03 Telefonaktiebolaget Lm Ericsson (Publ) Mobile station measurements with event-based reporting
EP1056258A1 (en) 1999-05-27 2000-11-29 TELEFONAKTIEBOLAGET L M ERICSSON (publ) Data unit sending means and control method in wireless networks
US6507572B1 (en) * 1999-06-11 2003-01-14 Lucent Technologies Inc. Primary transfer for simplex mode forward-link high-speed packet data services in CDMA systems
US6493541B1 (en) 1999-07-02 2002-12-10 Telefonaktiebolaget Lm Ericsson (Publ) Transmit power control time delay compensation in a wireless communications system
US6301479B1 (en) * 1999-07-08 2001-10-09 Telefonaktiebolaget Lm Ericsson Technique for providing a secure link in a mobile communication system
US6466556B1 (en) * 1999-07-23 2002-10-15 Nortel Networks Limited Method of accomplishing handover of packet data flows in a wireless telecommunications system
EP1081977A1 (en) 1999-08-31 2001-03-07 TELEFONAKTIEBOLAGET L M ERICSSON (publ) Subscriber station, network control means and method for triggering inter-frequency measurements in a mobile communication system
KR100305295B1 (en) * 1999-09-04 2001-11-05 정규석 The Implementation method for the task creation of traffic handling modules and the Tx/Rx functions of UTRAN MAC sublayer based on 3GPP specifications
FR2798810B1 (en) 1999-09-16 2002-05-31 Cit Alcatel PACKET-BASED TELECOMMUNICATION METHOD AND SYSTEM IN WHICH MULTIPLE COMMUNICATIONS ARE TRANSFERABLE FROM ONE WAY TO ANOTHER
FI114282B (en) * 1999-11-05 2004-09-30 Polar Electro Oy Method, Arrangement and Heart Rate Monitor for Heartbeat Detection
US6747969B1 (en) 1999-11-23 2004-06-08 Olaf Hirsch Transmission gap interference measurement
US6629285B1 (en) * 2000-01-04 2003-09-30 Nokia Corporation Data transmission
KR100387034B1 (en) * 2000-02-01 2003-06-11 삼성전자주식회사 Apparatus and method for scheduling packet data service in wireless communication system
US6907009B2 (en) 2000-03-31 2005-06-14 Matsushita Electric Industrial Co., Ltd. Rate matching calculation method and rate matching apparatus
EP1138915B1 (en) * 2000-04-01 2005-10-26 Robert Bosch GmbH Method and apparatus for determining charge quantity during charging and discharging of piezoelectric elements
US20020001296A1 (en) 2000-04-10 2002-01-03 Yu-Ro Lee Data transmission method for hybrid ARQ type II/III downlink of wide-band radio communication system
SE516727C2 (en) * 2000-04-11 2002-02-19 Ericsson Telefon Ab L M Method and apparatus for reducing the amount of hand-related signal traffic in a telecommunications system
US6621793B2 (en) 2000-05-22 2003-09-16 Telefonaktiebolaget Lm Ericsson (Publ) Application influenced policy
US6337983B1 (en) 2000-06-21 2002-01-08 Motorola, Inc. Method for autonomous handoff in a wireless communication system
DE10129234A1 (en) * 2000-06-21 2002-02-07 Bosch Gmbh Robert Electrical drive unit in sealed housing with customer specific electronics housing attached to it by plug connector
AU2001266522A1 (en) 2000-06-28 2002-01-08 Telefonaktiebolaget Lm Ericsson (Publ) Plural signaling channels for communicating signaling information to a user equipment terminal in a radio communications system
RU2000118981A (en) 2000-07-17 2002-07-10 Владимирский государственный университет METHOD FOR COMPRESSING INFORMATION ARRAYS AND THE FOLLOWING THEM PRECISE PLAYBACK IN THE ORIGINAL TYPE
US6545929B1 (en) * 2000-08-31 2003-04-08 Micron Technology, Inc. Voltage regulator and data path for a memory device
DE10050117A1 (en) 2000-10-11 2002-04-25 Philips Corp Intellectual Pty Wireless network has physical layer on transmission side for transmitting stored coded transport blocks and physical layer on receiver side for sending acknowledgements according to correct or faulty reception
US6678523B1 (en) 2000-11-03 2004-01-13 Motorola, Inc. Closed loop method for reverse link soft handoff hybrid automatic repeat request
EP1223769B1 (en) 2001-01-13 2010-10-06 Samsung Electronics Co., Ltd. Power control apparatus and method for a W-CDMA communication system employing a high-speed downlink packet access scheme
US6862450B2 (en) 2001-02-07 2005-03-01 Nokia Mobile Phones Ltd. Resetting signaling link upon SRNS relocation procedure
JP3543770B2 (en) 2001-02-20 2004-07-21 日本電気株式会社 MOBILE COMMUNICATION SYSTEM, MOBILE TERMINAL, TRANSMISSION DIVERSITY APPLICATION METHOD USED FOR THEM, AND PROGRAM THEREOF
SE0100739D0 (en) 2001-02-28 2001-02-28 Ericsson Telefon Ab L M Method and system of retransmission
CN1145295C (en) 2001-04-04 2004-04-07 华为技术有限公司 Method for soft switching subzone of mobile station in CDMA communication system
US7158504B2 (en) * 2001-05-21 2007-01-02 Lucent Technologies, Inc. Multiple mode data communication system and method and forward and/or reverse link control channel structure
EP1263159A1 (en) * 2001-06-01 2002-12-04 Telefonaktiebolaget Lm Ericsson Method and receiver for improved data packet transfer in a transmission protocol with repeat requests
AU2002311547B2 (en) 2001-06-30 2006-04-27 Nokia Inc. Apparatus and method for delivery of packets in multi-hop wireless networks
GB2380104B (en) 2001-07-06 2003-09-10 Samsung Electronics Co Ltd Method for resetting MAC layer entity in a communication system
US20030018909A1 (en) * 2001-07-17 2003-01-23 International Business Machines Corporation Method and apparatus for enforcing security policies in Java applications
KR100790131B1 (en) 2001-08-24 2008-01-02 삼성전자주식회사 Signalling method between mac entities in a packet communication system
US6856185B2 (en) * 2001-10-23 2005-02-15 Arris International, Inc. Simple RMS to DC converter
US6987981B2 (en) 2001-11-13 2006-01-17 Asustek Computer Inc. Robust RLC reset procedure in a wireless communication system
US20030147370A1 (en) 2002-02-05 2003-08-07 Chih-Hsiang Wu Inter Node B serving HS-DSCH cell change mechanism in a high speed wireless communication system
US6678249B2 (en) 2002-02-14 2004-01-13 Nokia Corporation Physical layer packet retransmission handling WCDMA in soft handover
KR100832117B1 (en) 2002-02-17 2008-05-27 삼성전자주식회사 Apparatus for transmitting/receiving uplink power offset in communication system using high speed downlink packet access scheme
US6717927B2 (en) 2002-04-05 2004-04-06 Interdigital Technology Corporation System for efficient recovery of node B buffered data following serving high speed downlink shared channel cell change
US6681112B1 (en) 2002-04-29 2004-01-20 Nokia Corporation Handovers of user equipment connections in wireless communications systems
US6901063B2 (en) 2002-05-13 2005-05-31 Qualcomm, Incorporated Data delivery in conjunction with a hybrid automatic retransmission mechanism in CDMA communication systems
MY134659A (en) 2002-11-06 2007-12-31 Nokia Corp Picture buffering for prediction references and display
KR100548344B1 (en) 2003-05-13 2006-02-02 엘지전자 주식회사 Rrc connection method in mobile communication system
US6975881B2 (en) 2003-08-25 2005-12-13 Motorola, Inc. Communication controller and method for maintaining a communication connection during a cell reselection
US7736061B2 (en) * 2004-06-11 2010-06-15 Seiko Instruments Inc. Fluid dynamic bearing motor, and recording-medium driving apparatus
KR101013227B1 (en) 2004-06-21 2011-02-10 노키아 코포레이션 Recovery method for lost signaling connection with HSDPA/fractional DPCH
KR101000682B1 (en) 2004-08-13 2010-12-10 엘지전자 주식회사 Rrc connection configuration method in mobile communication system
EP1892901A3 (en) 2004-10-01 2011-07-13 Panasonic Corporation Quality-of-service (qos)-aware scheduling for uplink transmission on dedicated channels

Also Published As

Publication number Publication date
HK1115974A1 (en) 2008-12-12
US9565603B2 (en) 2017-02-07
BRPI0308959B1 (en) 2017-03-21
BR0308959A (en) 2005-01-11
US8085729B2 (en) 2011-12-27
EP3002971A1 (en) 2016-04-06
US8130721B2 (en) 2012-03-06
KR20100029853A (en) 2010-03-17
KR20050098974A (en) 2005-10-12
US20060153137A1 (en) 2006-07-13
CN101702819B (en) 2014-08-27
HK1115973A1 (en) 2008-12-12
SG165989A1 (en) 2010-11-29
US20060256745A1 (en) 2006-11-16
EP1493288B1 (en) 2008-09-03
DE20305530U1 (en) 2003-10-16
NO20044785L (en) 2004-11-03
WO2003087978A3 (en) 2004-03-11
US8085726B2 (en) 2011-12-27
US20060126567A1 (en) 2006-06-15
MY143067A (en) 2011-02-28
CA2481270A1 (en) 2003-10-23
KR100630854B1 (en) 2006-10-04
US20160112912A1 (en) 2016-04-21
EP3002971B1 (en) 2017-07-19
TW570425U (en) 2004-01-01
AR039619A1 (en) 2005-03-02
KR100976837B1 (en) 2010-08-20
US20040165554A1 (en) 2004-08-26
KR101044649B1 (en) 2011-06-29
IL197704A (en) 2010-11-30
KR20080036245A (en) 2008-04-25
JP2006025437A (en) 2006-01-26
TWI321921B (en) 2010-03-11
JP2005522923A (en) 2005-07-28
TW201101877A (en) 2011-01-01
JP4298682B2 (en) 2009-07-22
TW200417184A (en) 2004-09-01
MY136857A (en) 2008-11-28
JP4619445B2 (en) 2011-01-26
TW201244392A (en) 2012-11-01
KR20050090965A (en) 2005-09-14
US8837431B2 (en) 2014-09-16
JP3784805B2 (en) 2006-06-14
KR200319549Y1 (en) 2003-07-12
KR101018369B1 (en) 2011-03-02
US20120170550A1 (en) 2012-07-05
TW200708148A (en) 2007-02-16
CN1647555A (en) 2005-07-27
GEP20094600B (en) 2009-02-10
IL164415A (en) 2009-11-18
KR20040068057A (en) 2004-07-30
DE60323350D1 (en) 2008-10-16
TW200306126A (en) 2003-11-01
KR100955016B1 (en) 2010-04-27
KR20040111476A (en) 2004-12-31
ATE407519T1 (en) 2008-09-15
CN101702819A (en) 2010-05-05
CA2644202C (en) 2015-12-15
US6717927B2 (en) 2004-04-06
NO20092205L (en) 2004-11-03
TWI347762B (en) 2011-08-21
JP2009261037A (en) 2009-11-05
CA2906411A1 (en) 2003-10-23
IL164415A0 (en) 2005-12-18
WO2003087978A2 (en) 2003-10-23
NO328029B1 (en) 2009-11-16
TWI228007B (en) 2005-02-11
IL205946A (en) 2012-01-31
KR101044648B1 (en) 2011-06-29
CA2644202A1 (en) 2003-10-23
JP4619389B2 (en) 2011-01-26
CA2481270C (en) 2009-02-03
US20030189909A1 (en) 2003-10-09
TWI430676B (en) 2014-03-11
HK1074321A1 (en) 2005-11-04
US20140362826A1 (en) 2014-12-11
CN100559902C (en) 2009-11-11
AU2003224820B2 (en) 2008-02-14
US8085728B2 (en) 2011-12-27
JP2008048456A (en) 2008-02-28
ES2639131T3 (en) 2017-10-25
CN2696250Y (en) 2005-04-27
TWI465051B (en) 2014-12-11
HK1055211A2 (en) 2003-12-12
AU2003224820A1 (en) 2003-10-27
DK1493288T3 (en) 2009-01-26
GEP20063990B (en) 2006-12-11
NO336425B1 (en) 2015-08-17
ES2312769T3 (en) 2009-03-01
EP1493288A4 (en) 2006-05-31
EP1493288A2 (en) 2005-01-05
MXPA04009742A (en) 2005-01-11
KR20100110394A (en) 2010-10-12
US9220037B2 (en) 2015-12-22
MY136836A (en) 2008-11-28

Similar Documents

Publication Publication Date Title
US9565603B2 (en) HS-DSCH inter-node B cell change
AU2008202107B2 (en) System for efficient recovery of node B buffered data following serving high speed downlink shared channel cell change
EP1940095B1 (en) System for efficient recovery of node b buffered data following serving high speed downlink shared channel cell change

Legal Events

Date Code Title Description
EEER Examination request

Effective date: 20150928

MKEX Expiry

Effective date: 20230403