WO2008017196A1 - Procédé pour mettre en œuvre un changement de cellule hs-dsch entre des noeuds b d'un système hsdpa, le système de télécommunication pour mettre en oeuvre le procédé et un produit formant programme comprenant des instructions de programme pour mettre en oeuvre le procéd - Google Patents

Procédé pour mettre en œuvre un changement de cellule hs-dsch entre des noeuds b d'un système hsdpa, le système de télécommunication pour mettre en oeuvre le procédé et un produit formant programme comprenant des instructions de programme pour mettre en oeuvre le procéd Download PDF

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Publication number
WO2008017196A1
WO2008017196A1 PCT/CN2006/001843 CN2006001843W WO2008017196A1 WO 2008017196 A1 WO2008017196 A1 WO 2008017196A1 CN 2006001843 W CN2006001843 W CN 2006001843W WO 2008017196 A1 WO2008017196 A1 WO 2008017196A1
Authority
WO
WIPO (PCT)
Prior art keywords
node
dsch
cell change
srnc
dsch cell
Prior art date
Application number
PCT/CN2006/001843
Other languages
English (en)
Chinese (zh)
Inventor
Jing Zhang
Jia Qiao
Jinrong Gong
Original Assignee
Utstarcom Telecom Co., Ltd.
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 Utstarcom Telecom Co., Ltd. filed Critical Utstarcom Telecom Co., Ltd.
Priority to CN2006800552015A priority Critical patent/CN101480081B/zh
Priority to PCT/CN2006/001843 priority patent/WO2008017196A1/fr
Publication of WO2008017196A1 publication Critical patent/WO2008017196A1/fr

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Classifications

    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/20—Interfaces between hierarchically similar devices between access points

Definitions

  • the present invention relates to a method for serving a HS-DSCH (High Speed Downlink Shared Channel) cell change in an HSDPA (High Speed Downlink Packet Data Access) system, and more particularly to a method for serving an HS-DSCH cell change between Node Bs (Node Bs) in an HSDPA system .
  • HS-DSCH High Speed Downlink Shared Channel
  • HSDPA High Speed Downlink Packet Data Access
  • HSDPA High Speed Downlink Packet Alliance
  • the HSDPA mainly enhances the air interface by introducing HS-DSCH.
  • the HS-DSCH is a shared high-speed downlink data channel.
  • the (user equipment) can share the HS-DSCH by time division multiplexing and code division multiplexing.
  • the HS-DSCH is a transport channel, and the physical channel mapped by it is called HS-PDSCH (High Speed Physical Downlink Shared Channel).
  • HSDPA adds a new MAC (Media Access Control) functional entity MAC-hs (High Speed Downlink Packet Access Media Access Control) to the original Node B structure.
  • the MAC-hs is responsible for handling the HS-DSCH data transmission and managing the allocation of HSDPA physical resources.
  • the MAC-hs consists of four functional entities: flow control, scheduling/priority processing, HARQ (Hybrid Automatic Repeat Request), and TFRC (Transport Format and Resource Consolidation) selection.
  • flow control scheduling/priority processing
  • HARQ Hybrid Automatic Repeat Request
  • TFRC Transport Format and Resource Consolidation
  • the radio link to which the HS-PDSCH uniquely assigned to the UE belongs is referred to as a serving HS-DSCH radio link.
  • the cell associated with the serving HS-DSCH radio link is referred to as the "service HS-DSCH cell," and the Node B of the control service HS-DSCH cell is called the service HS-DSCH Node ⁇ ' ⁇
  • the task of serving the HS-DSCH radio link is subordinate to the source HS-DSCH cell.
  • the line link migrates to the radio link belonging to the target HS-DSCH cell, which is called "serving HS-DSCH cell change".
  • the task of serving the HS-DSCH Node B is migrated from the source HS-DSCH Node B to the target HS-DSCH Node B, referred to as "Serving HS-DSCH Node B Relocation".
  • the serving HS-DSCH cell change may be further classified into two types, either determined by the UE or determined by the network, the target HS-DSCH cell.
  • the target HS-DSCH cell In the 3GPP R5 version specification, only the network-controlled service HS-DSCH cell change is supported, and the service HS-DSCH cell change determined by the UE is not supported.
  • the network determines the target HS-DSCH cell, which may be based on the UE measurement report and other available information in the network.
  • the network controlled service HS-DSCH cell change is performed as an RRC (Radio Resource Control) layer signaling procedure and is based on the original handover procedure in the CELL_DCH state.
  • RRC Radio Resource Control
  • the service HS-DSCH cell change can be classified as follows:
  • the service HS-DSCH cell change can be classified as:
  • Service HS-DSCH cell change accompanied by the establishment, release, and/or reconfiguration of dedicated physical channels
  • the service HS-DSCH cell change can be classified as:
  • Synchronization service HS-DSCH cell change, start and stop of HS-DSCH transmission and reception are performed at a determined time
  • Non-synchronous service HS-DSCH cell change, HS-DSCH transmission and reception Start and stop execution as fast as possible on both sides.
  • the service HS-DSCH cell change can be classified as:
  • Figure 1 is a schematic diagram of a serving HS-DSCH cell change between Node Bs. As shown in Figure 1, the service HS-DSCH Node B relocation needs to be performed on the UTRAN side. Service HS-DSCH Node B Relocation and Service HS-DSCH cell change is a separate process, although the implementation of the HS-DSCH Node B relocation cannot be performed without the serving HS-DSCH cell change.
  • the HARQ entity located in the source HS-DSCH Node B belonging to the designated UE is deleted, and in the target HS-DSCH Node B, a new HARQ entity is established.
  • the source HS-DSCH Node B and the target HS-DSCH Node B can be controlled by different CR C (Control Radio Network Controller) or the same CRNC.
  • the MAC-hs relocation function can avoid unnecessary repeated transmissions or can minimize round-trip delay.
  • the MAC-hs relocation function refers to a function for exchanging MAC-hs state information between the UE and the UTRAN and between different Node Bs in the case of serving the HS-DSCH cell update between the Node Bs. It is the easiest way to completely reset the AC-hs entity at the UE and Node B. However, resetting the MAC-hs entity introduces additional processing delays and can result in unnecessary retransmissions. In the case of serving the HS-DSCH cell update inside the Node B, the MAC-hs entity including both the Node B and the UE usually does not need to be reinitialized.
  • the implementation of the MAC-hs relocation function has not been confirmed.
  • the RLC (Radio Link Control) mode of AM Acknowledgment Mode
  • the data state transmitted to the UE can be obtained at the RLC layer using the inquiry function before or after the HS-DSCH cell update.
  • the RMC mode of UM non-acknowledgment mode
  • how to relocate PDUs (protocol data units) that are not transmitted to the UE is not determined in the 3GPP R5 version specification. Summary of the invention
  • the technical problem to be solved by the present invention is to provide a method for implementing a MAC-hs relocation function in serving a HS-DSCH cell change between Node Bs.
  • the technical solution of the present invention is: during the process of serving the HS-DSCH cell change between the Node Bs, the SR C (Serving Radio Network Controller) requests the source Node B to forward the source Node B.
  • the completed HS-DSCH data frame the source Node B sends the unprocessed HS-DSCH data frame to the SR (:, the SRNC receives and then forwards to the target Node B.
  • the MAC-hs relocation method provided by the present invention can be applied to all serving HS-DSCH cell change types classified according to the configuration of the dedicated physical channel, and specifically includes: (1) Serving HS-DSCH cell change while maintaining dedicated physics The channel configuration and the active set are unchanged; (2) Serving the HS-DSCH cell change, accompanied by the establishment, release, and/or reconfiguration of the dedicated physical channel; (3) Serving the HS-DSCH cell change, accompanied by soft handover activation Set update.
  • the invention can be applied not only to the AM RLC mode, but also to the UM RLC mode, while avoiding high-level signaling transmission of the wireless interface, which greatly reduces the processing delay.
  • a MAC-hs weighting in a service high speed downlink shared channel HS-DSCH cell change between Node Bs (Node Bs) of a high speed downlink packet data access HSDPA system A method of locating a function, the method comprising the steps of:
  • a wireless communication system including a node ⁇
  • Node B (Node B), SRNC, terminal UE, wherein the Node B and the SRNC are configured to implement the high speed downlink shared channel HS between the Node Bs of the high speed downlink packet data access HSDPA system as described in the first aspect above.
  • a program product comprising machine readable program instructions, which, when loaded into a wireless communication system, cause the wireless communication system to implement the first aspect as above.
  • FIG. 1 is a schematic diagram showing a procedure of serving a HS-DSCH cell update between Node Bs accompanying a service HS-DSCH Node B relocation;
  • FIG. 2 is a flow chart showing a change of a serving HS-DSCH cell accompanied by synchronization of a hard handover in the prior art
  • Figure 3 is a flow chart showing an improved service HS-DSCH cell change with synchronization of hard handover. detailed description
  • FIG. 2 is a flow diagram of a synchronized serving HS-DSCH cell change with a hard handoff (i.e., a situation pertaining to the establishment, release, and/or reconfiguration of a dedicated physical channel mentioned above) in the 3GPP R5 version specification.
  • a hard handoff i.e., a situation pertaining to the establishment, release, and/or reconfiguration of a dedicated physical channel mentioned above
  • the reconfiguration is performed in two steps. In the wireless interface, there is only one RRC procedure.
  • the UE transmits a MEASUREMENT REPORT message containing the intra-frequency measurement result triggered by Event 1D "Best Cell Change".
  • the SRNC determines that a hard handover is required based on the received measurement report and/or load control algorithm.
  • SR C establishes a new radio link at the target Node B (step 2-1), and the target Node B starts transmitting and receiving on the dedicated channel (DCH) (step 2-2).
  • DCH dedicated channel
  • the newly established radio link is ready to perform a re-synchronization at a given activation time indicated by the CPHY-RL-Commit-REQ primitive (steps 2-9).
  • the HS-DSCH in the target HS-DSCH Node B starts transmission, and the HS-DSCH in the source HS-DSCH Node B stops.
  • the SRNC then sends a TRANSPORT CHANNEL RECONFIGURATION message in the original configuration (step 2-10).
  • This message indicates the configuration of the DCH and HS-DSCH after the handover.
  • the TRANSPORT CHANNEL RECONFIGURATION message includes a flag indicating the MAC-hs entity reset within the UE.
  • the message also includes parameters related to HS-DSCH transport channel parameter updates in the target HS-DSCH cell.
  • the activation time indicated by the UE in the TRANSPORT CHANNEL RECONFIGURATION message terminates transmission and reception on the original wireless link. And configure its physical layer to begin receiving on the new wireless link.
  • the UE sends a TRANSPORT CHANNEL RECONFIGURATION COMPLETE message (step 2-12).
  • the SRNC then terminates the reception and transmission for the dedicated channel on the original wireless link and releases all resources allocated to the UE (steps 2-13, 2-14).
  • TRANSPORT CHANNEL RECONFIGURATION message indicates that the UE MAC-hs needs to be reset, and that a status report for each RLC entity associated with the HS-DSCH needs to be generated.
  • the reset of the UE MAC-hs entity triggers the transfer of the content in the rearrangement buffer to the upper layer.
  • Figure 3 is a specific embodiment of the present invention in the case of a service HS-DSCH cell change accompanied by a hard handoff synchronization.
  • the process of Figure 3 is in contrast to Figure 2, except that: RL Reconfiguration Ready message (step 3-3) and RL Reconfiguration Commit (step 3) -8) Add new message and data interactions between messages (steps 3-4 to 3-7) to complete the MAC-hs relocation function.
  • the SRNC sends a Forward HS-DSCH Frame Request Forwarding HS-DSCH Frame Request message to the source Node B (step 3-4), and the source Node B returns the HS-DSCH frame that has not been processed to the UE to the SRNC (Step 3) 5).
  • the HS-DSCH frame that has not been processed by the UE is returned to the SRNC, and then a Forward HS-DSCH Frame Response message is sent to the SRNC (step 3-7).
  • the SRNC then forwards the received return frame from the source Node B to the target Node B (step 3-6).
  • the MAC-hs relocation method provided by the present invention can also be applied to a service HS-DSCH cell change that maintains a dedicated physical channel configuration and an active set unchanged, and a service HS-DSCH cell change accompanied by an active set update in a soft handover,
  • the processing method in the case of a service HS-DSCH cell change with the establishment, release, and/or reconfiguration of a dedicated physical channel is similar, and is no longer "exemplary.”
  • the above method for serving HS-DSCH cell change between Node Bs (Node Bs) in the HSDPA system of the present invention can also be implemented by the following configuration:
  • the above-described MAC-hs relocation method of the present invention can be implemented by configuring corresponding Node Bs and SR Cs in a wireless communication system, and thus a wireless communication system including such Node Bs and SRNCs constitutes an embodiment of the present invention.
  • the described configuration can be implemented in Node B and SRNC by software, hardware, or a combination of both. Such a configuration can be easily realized by those skilled in the art in the above description of the method of the present invention, and therefore will not be described again.
  • the MAC-hs relocation method of the present invention can be implemented by corresponding software configuration of the wireless communication system, and thus the program product embodying the software configuration also constitutes an embodiment of the present invention.
  • the MAC-hs relocation method of the present invention can be realized by providing the program product as described above, and therefore, the storage medium storing the above program product also constitutes an embodiment of the present invention.
  • a storage medium may be, for example, a ROM, a RAM, a CD-ROM, a CD-R, an optical disk, a magneto-optical disk, a memory card, or the like.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé pour mettre en œuvre une fonction de reconfiguration MAC-hs dans le changement de cellule HS-DSCH entre des noeuds B d'un système HSDPA. Un SRNC (contrôleur de réseau radio de desserte) demande que le noeud d'origine B soit acheminé dans la trame HS-DSCH sans être traité par le noeud d'origine B, et le noeud B d'origine envoie la trame HS-DSH non traitée vers le SRNC. Après réception, le SRNC achemine la trame vers le noeud B cible. L'invention concerne également un dispositif, un système de télécommunication sans fil et un produit formant programme pour mettre en œuvre le procédé susmentionné. L'invention peut non seulement être appliquée dans un mode AM RLC, mais peut également être appliquée dans un mode UM RLC. L'invention permet d'obtenir les avantages consistant à éviter la transmission d'un signal de niveau élevé dans une interface sans fil, en réduisant par conséquent de manière importante le retard de temps de traitement.
PCT/CN2006/001843 2006-07-25 2006-07-25 Procédé pour mettre en œuvre un changement de cellule hs-dsch entre des noeuds b d'un système hsdpa, le système de télécommunication pour mettre en oeuvre le procédé et un produit formant programme comprenant des instructions de programme pour mettre en oeuvre le procéd WO2008017196A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN2006800552015A CN101480081B (zh) 2006-07-25 2006-07-25 一种HSDPA系统中实现Node B之间服务HS-DSCH小区变更的方法以及实现该方法的通信系统
PCT/CN2006/001843 WO2008017196A1 (fr) 2006-07-25 2006-07-25 Procédé pour mettre en œuvre un changement de cellule hs-dsch entre des noeuds b d'un système hsdpa, le système de télécommunication pour mettre en oeuvre le procédé et un produit formant programme comprenant des instructions de programme pour mettre en oeuvre le procéd

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2006/001843 WO2008017196A1 (fr) 2006-07-25 2006-07-25 Procédé pour mettre en œuvre un changement de cellule hs-dsch entre des noeuds b d'un système hsdpa, le système de télécommunication pour mettre en oeuvre le procédé et un produit formant programme comprenant des instructions de programme pour mettre en oeuvre le procéd

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WO2008017196A1 true WO2008017196A1 (fr) 2008-02-14

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WO (1) WO2008017196A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1435980A (zh) * 2002-01-30 2003-08-13 华为技术有限公司 一种传递协议数据单元信息的方法
CN2696245Y (zh) * 2002-04-05 2005-04-27 交互数字技术公司 用于服务高速下行链路分组接入小区变更的控制器
CN1647555A (zh) * 2002-04-05 2005-07-27 美商内数位科技公司 提供高速下行链路共享信道小区改变后有效回复节点b的缓冲数据的系统

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1435980A (zh) * 2002-01-30 2003-08-13 华为技术有限公司 一种传递协议数据单元信息的方法
CN2696245Y (zh) * 2002-04-05 2005-04-27 交互数字技术公司 用于服务高速下行链路分组接入小区变更的控制器
CN1647555A (zh) * 2002-04-05 2005-07-27 美商内数位科技公司 提供高速下行链路共享信道小区改变后有效回复节点b的缓冲数据的系统

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CN101480081B (zh) 2010-12-22
CN101480081A (zh) 2009-07-08

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