WO2008095437A1 - Procédé, système, réseau et terminal pour transmettre des données entre le terminal et le réseau - Google Patents

Procédé, système, réseau et terminal pour transmettre des données entre le terminal et le réseau Download PDF

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Publication number
WO2008095437A1
WO2008095437A1 PCT/CN2008/070204 CN2008070204W WO2008095437A1 WO 2008095437 A1 WO2008095437 A1 WO 2008095437A1 CN 2008070204 W CN2008070204 W CN 2008070204W WO 2008095437 A1 WO2008095437 A1 WO 2008095437A1
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WO
WIPO (PCT)
Prior art keywords
terminal
data transmission
target cell
network
transmission channel
Prior art date
Application number
PCT/CN2008/070204
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English (en)
Chinese (zh)
Inventor
Gang Zhao
Fenghua Geng
Original Assignee
Huawei Technologies 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 Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2008095437A1 publication Critical patent/WO2008095437A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H04W36/22—Performing reselection for specific purposes for handling the traffic

Definitions

  • Embodiments of the present invention relate to the field of wireless communications technologies, and in particular, to a method, system, network, and terminal for transmitting data between a terminal and a network.
  • a Temporary Block Flow (TBF) in a wireless communication technology is a communication transmission channel for supporting an uplink (data flows from a mobile unit to a mobile communication system) and a downlink (data flows from a mobile communication system to a mobile unit).
  • TBF Temporary Block Flow
  • RR Radio Resource
  • PDU Packet Data Physical Channel
  • FIG. 1 is a flowchart of a method for uplink data transmission in the background art.
  • a process in which a terminal sends uplink service data to a network is generally:
  • Step 101 The terminal sends, to the network side, request information for establishing one or more uplink TBFs, where the request information includes an uplink TBF and a packet flow indicator (PFI, which the terminal wants to establish with the current cell.
  • PFI packet flow indicator
  • PFI Packet Flow Identifier
  • Step 102 After receiving the request information sent by the terminal in the uplink direction to establish one or more uplink data transmission channels, the network side learns, according to the PFI in the request message, the information required for the terminal to perform service data transmission. QoS. The network side determines whether the current cell to be established by the terminal has sufficient resources to satisfy the requirements of the QoS parameters related to the terminal service. If yes, go to step 103; otherwise, go to step 104.
  • Step 103 The network side allocates radio resources for the terminal service in the current cell, and sends one or more TBF uplink signaling messages (PACKET UPLINK AS SIGNMENT I MULTIPLE TBF UPLINK ASSIGNMENT) to the terminal.
  • Step 104 The network side sends an access reject message (PACKET ACCESS REJECT) to the terminal.
  • the network side determines, according to the PFI in the service data frame, whether the current cell has sufficient resources to meet the requirements of the QoS parameters related to the terminal service. If the current cell does not have enough resources to satisfy, the network side sends an access reject message (PACKET ACCESS REJECT) to the downlink data initiator, rejects the establishment of the downlink data transmission channel, and discards the downlink data frame.
  • PACKET ACCESS REJECT access reject message
  • the inventors have found that at least the following problems exist in the background art:
  • the terminal when establishing a data transmission channel, the terminal can only perform data transmission in the current cell, if the current cell does not have sufficient resources to satisfy the data.
  • the network can only cancel the transmission of the data. This will affect the transmission of a large amount of business data, so that the user's business data transmission needs cannot be maximized, and the efficiency of data transmission in the network is reduced.
  • embodiments of the present invention provide a method, system, network, and terminal for transmitting data between a terminal and a network, so as to maximize the satisfaction of the user to transmit service data and improve the efficiency of data transmission in the network.
  • a method for transmitting data between a terminal and a network includes: when establishing a data transmission channel, the terminal switches to a target cell selected by the network side according to a handover command of the network side, and Data transmission is performed by using a data transmission channel allocated by the network side for the target cell.
  • the embodiment of the present invention further provides a system for transmitting data between a terminal and a network, including a terminal and a network;
  • the network is configured to send a handover command to the terminal when establishing a data transmission channel, where the handover command includes a target cell selected by the network for the terminal, and data transmission allocated by the network to the target cell Channel information
  • the terminal After receiving the handover command, the terminal is configured to switch to a target cell selected by the network for the terminal, and use the network to transmit data for the data transmission channel allocated by the target cell.
  • the embodiment of the invention further provides a terminal, including: a receiving unit, configured to: when the data transmission channel is established, receive a handover command sent by the network side; the transmission unit is configured to switch to the target cell selected by the network side for the terminal according to the handover command, and use The network side performs data transmission for the data transmission channel allocated by the target cell.
  • the embodiment of the present invention further provides a network, including a sending unit, configured to send a handover command to a terminal when establishing a data transmission channel, where the handover command includes a target cell selected by the network for the terminal, and is the target Data transmission channel information allocated by the cell.
  • the network when establishing a data transmission channel between the terminal and the network, if the current cell of the terminal does not have sufficient resources to meet the requirements of the data transmission, the network can send a handover command to the terminal.
  • the terminal is instructed to switch to another target cell, and the data transmission channel allocated for the target cell is used for data transmission, thereby improving the success rate of user data transmission, and maximally satisfying the requirement of the user for data transmission.
  • Embodiment 1 of a data transmission method according to the present invention
  • Embodiment 3 is a flowchart of Embodiment 2 of a data transmission method according to the present invention.
  • FIG. 4 is a schematic structural diagram of an embodiment of a data transmission system according to the present invention.
  • FIG. 5 is a schematic structural diagram of an embodiment of a data transmission terminal according to the present invention.
  • FIG. 6 is a schematic structural diagram of an embodiment of a data transmission network according to the present invention.
  • a method for transmitting data between a terminal and a network includes: when establishing a data transmission channel, the network side sends a handover command to the terminal, and the terminal uses the handover command as a designated The data transmission channel allocated by the target cell performs data transmission.
  • the terminal further includes: establishing a new data transmission channel corresponding to the target cell before transmitting the data.
  • the data transmission channel is preferably a TBF or a Radio Access Bearer (RAB) applied to a General Packet Radio Service (GPRS) system.
  • RAB Radio Access Bearer
  • GPRS General Packet Radio Service
  • FIG. 2 it is a flowchart of Embodiment 1 of a data transmission method according to the present invention.
  • the method includes the following steps:
  • Step 201 The terminal sends, to the base station in the network, request information for establishing one or more uplink TBFs, where the request information includes PFI information corresponding to the QoS required by the terminal to establish an uplink TBF with the current cell and the service data to be transmitted.
  • Step 202 After receiving the request information for establishing the uplink TBF, the base station learns the QoS parameters required for the service data to be transmitted according to the PFI in the information, and determines whether the current cell of the terminal has sufficient resources. Meet this QoS requirement. If yes, go to step 203; otherwise, go to step 204.
  • Step 203 The base station sends one or more uplink TBF assignment messages to the terminal, and the terminal establishes one or more uplink TBFs according to the assignment message.
  • Step 204 The base station sends a handover request to the core network, selects a target cell, and switches to the target cell.
  • Step 204a or 204b The core network returns a handover response message to the base station (the handover succeeds or the handover fails).
  • the base station performs corresponding processing according to the handover response fed back from the core network, specifically: if the handover is successful, step 205 and step 206 are performed; otherwise, step 207 is performed.
  • the neighboring cell with a relatively good signal may be selected as the target cell according to the strength of the neighboring cell signal reported by the terminal.
  • the handover to the target cell may use different handover modes according to different network environments.
  • the handover of the base station to the target cell may be specifically: the base station to the service side GPRS support node (SGSN, The Serving GPRS Support Node sends a Packet Handover Request message requesting a handover to the selected target cell.
  • the packet switching request message includes a PFI corresponding to a QoS required for the service data to be transmitted by the terminal.
  • the SGSN After receiving the packet switching request message, the SGSN sends a packet switching request to the target wireless access system of the network.
  • the target radio access system determines, according to the QoS parameter corresponding to the PFI, whether the target cell has sufficient resources to meet the QoS requirement.
  • the packet handover request response message includes the TBF allocated for the target cell and the QoS information allocated thereto; otherwise, the handover fails, and the SGSN transmits a packet handover request response including the handover failure information to the base station.
  • the base station performs the following step 204 or step 206 according to the received packet handover request response from the SGSN.
  • Step 205 The base station sends a handover command to the terminal.
  • the handover command includes a TBF allocated for the target cell and a PFI corresponding to the Qos allocated thereto.
  • Step 206 After receiving the packet switching command from the base station, the terminal accesses the target cell according to the TBF allocated for the target cell included in the handover command, and after the access is successful, the terminal uses The data transmission channel allocated to the designated target cell in the handover command performs uplink data transmission.
  • the handover command when the handover command has a corresponding TBF that the terminal does not currently exist, the terminal needs to establish a corresponding to the target cell before accessing the target cell. New upstream TBF.
  • the handover command may be a packet handover command or a dual transfer mode (DTM, Dual Transfer Mode) handover command.
  • the step of selecting the target cell in step 204 and switching to the target cell may be repeated until After finding the target cell that can meet the service data transmission requirement, the steps 205 and 206 are performed. Or, after the preset number of times is repeated, if there is no suitable target cell yet, step 207 is performed.
  • Step 207 The base station sends an access reject message to the terminal.
  • the data transmission channel when the data transmission channel is established, if the current cell does not have sufficient resources to transmit data, the data transmission can be realized as much as possible by switching to other target cells. Meanwhile, this embodiment is in the present embodiment.
  • the target cell can be repeatedly selected until a suitable cell is found to transmit data. This can further maximize the data transmission success rate, thereby further improving the data transmission efficiency of the entire network.
  • FIG. 3 it is a flowchart of Embodiment 2 of a method for data transmission according to the present invention.
  • the method includes the following steps:
  • Step 301 The core network sends downlink service data to the terminal by using the base station, where the downlink service data includes PFI information corresponding to the QoS required for transmitting the downlink service data.
  • Step 302 After receiving the downlink service data, the base station obtains, according to the PFI information in the service data, a QoS parameter required for transmitting the downlink service data. And determining, according to the QoS parameter, whether the current cell of the terminal has sufficient resources to meet the QoS requirement of the service data transmission.
  • step 303 is performed; otherwise, step 304 is performed.
  • Step 303 The base station sends one or more downlink TBF assignment information to the terminal, and the terminal establishes a corresponding one or more downlink TBFs according to the assignment information.
  • Step 304 The base station sends a handover request to the core network, selects a target cell, and switches to the target cell.
  • Step 304a or 304b The core network returns a handover response message to the base station (the handover succeeds or the handover fails).
  • the base station performs corresponding processing according to the handover response 304a or 304b fed back by the core network, which is: if the handover is successful, step 305 to step 306 is performed; otherwise, step 307 is performed.
  • the base station selects the target cell according to the strength of the neighboring cell signal reported by the terminal, and selects the neighboring cell with a relatively good signal as the target cell.
  • the handover to the target cell may use different handover modes according to different network environments, for example, packet handover in the 2G network, and the handover of the base station to the target cell may be specifically: the base station sends a packet handover request message to the SGSN on the network side, Request to switch to the selected target cell.
  • the packet switching request command includes a PFI corresponding to a QoS required for service data to be transmitted by the terminal.
  • the SGSN After receiving the packet handover request message, the SGSN sends a packet handover request to the target radio access system.
  • the target radio access system determines, according to the QoS parameter corresponding to the PFI, whether the target cell has sufficient resources to meet the foregoing QoS requirements.
  • the base station performs the following step 304 or step 306 according to the received packet handover request response from the SGSN.
  • Step 305 The base station sends a packet switching command to the terminal.
  • the packet switching command includes a TBF corresponding to the target cell and a PFI corresponding to the Qos information.
  • Step 306 After receiving the packet switching command from the base station, the terminal accesses the target cell according to the TBF allocated to the target cell included in the handover command, and uses the switching command after the access succeeds.
  • the data transmission channel allocated for the designated target cell performs uplink data transmission.
  • the terminal when there is a downlink TBF that the terminal does not currently exist in the handover command, the terminal needs to establish a new downlink corresponding to the target cell before accessing the target cell.
  • the handover command may be a packet handover command or a dual transfer mode (DTM, Dual Transfer Mode) handover command.
  • step of selecting the target cell in step 304 and switching to the target cell may be repeated until After finding the target cell that can meet the service data transmission requirement, step 305 and step 306 are performed. Or, after the preset number of times is repeated, if there is no suitable target cell yet, step 307 is performed.
  • Step 307 The base station sends a handover cancellation message to the network side, and discards the downlink service data.
  • the data transmission can be realized as much as possible by switching to other target cells in the case that the current cell does not have sufficient resources to transmit data during data transmission;
  • the target cell can be repeatedly selected until a suitable cell is found to transmit data. This can further maximize the data transmission success rate, thereby further improving the data transmission efficiency of the entire network.
  • the embodiment of the present invention further discloses a system for transmitting data between a terminal and a network, including a terminal and a network;
  • the network is configured to send a handover command to the terminal when establishing a data transmission channel; the terminal is configured to use the handover command after receiving a handover command sent by the network Data transmission is performed for a data transmission channel allocated to a specified target cell.
  • FIG. 4 it is a schematic structural diagram of a preferred embodiment of a data transmission system according to the present invention.
  • the system includes a terminal 401 and a network 402.
  • the terminal 401 is used as an uplink sending end to send an uplink data transmission to the network 402.
  • the request message for establishing an uplink data transmission channel includes a PFI corresponding to the QoS required by the terminal to establish an uplink TBF with the current cell 403 and the service data to be transmitted; and the terminal 401 is further configured according to Corresponding operations are performed on the different response messages sent from the network 402 to the request message, specifically: when the terminal 401 receives the handover command sent from the network 402, the target cell is designated as the designated target by using the handover command.
  • the data transmission channel allocated by the 404 performs data transmission; or after the terminal 401 receives one or more uplink TBF assignment messages sent from the network 402, performing corresponding one or more uplink TBFs according to the assignment message, To achieve the transmission of business data.
  • the terminal 401 when the terminal 401 is used as the receiving end of the downlink data transmission, the terminal 401 is further configured to perform the transmission of the service data by using the data transmission channel allocated for the designated target cell 404 in the handover command according to the handover command sent by the network 402.
  • the network 402 is configured to receive the request message for establishing an uplink TBF from the uplink sending end, that is, the terminal 401, or send the downlink service data to the downlink receiving end, that is, the terminal 401, according to the request message or the service data.
  • the PFI information in the network determines whether the current cell 403 where the terminal 401 is located has sufficient resources to meet the QoS requirements of the service data transmission.
  • the network 402 allocates sufficient resources for the service data transmission to the current cell 403 and transmits one or more uplink TBF assignment messages to the terminal 401; if not, the network 402 selects the target cell 404 and determines the Whether the target cell 404 has sufficient resources, if the target cell has sufficient resources, the network 402 allocates resources in the target cell 404 that can meet the QoS requirements of the service data transmission; if the allocation is successful, the network 402 sends the terminal to the uplink, Or the downlink receiving terminal sends a handover command.
  • the terminal 401 is further configured to establish a new data transmission channel corresponding to the target cell 404.
  • the data transmission channel in the embodiment of the invention is preferably a temporary block stream in the GPRS system. Improve the data transmission success rate, thereby further improving the data transmission efficiency of the entire network.
  • the embodiment of the present invention further provides a terminal for transmitting data between a terminal and a network.
  • the terminal includes: a receiving unit, configured to receive a handover command sent by the network side; and a transmission unit, configured to perform transmission of service data by using a data transmission channel allocated for the designated target cell in the handover command.
  • FIG. 5 is a schematic structural diagram of a preferred embodiment of a data transmission terminal according to the present invention.
  • the terminal 50 includes: a transmission unit 501, a transmission channel establishing unit 502, a request message sending unit 503, and a receiving unit 504, where:
  • the request message sending unit 503 is configured to send, when the terminal is the uplink sending end, a request message for establishing an uplink data transmission channel to the network side.
  • the request message for establishing an uplink data transmission channel includes an uplink TBF that the terminal wants to establish with the current cell, and a PFI corresponding to the QoS required for the service data to be transmitted.
  • the receiving unit 504 is configured to: when the terminal is used as an uplink sending end, receive a different response message sent from the network for the establishing an uplink data transmission channel request message, and specify different units to perform corresponding operations according to different response messages, Specifically, when the received response message is a handover command, the handover command is sent to the transmission unit 501; when the received response message is one or more uplink TBF assignment messages, the data transmission is sent to the transmission unit 501. In addition, when the received response message is a handover command including data transmission channel information that is not available to the terminal, the receiving unit 504 transmits a setup data transmission channel instruction to the transmission channel establishment unit 502.
  • the transmission unit 501 is configured to perform transmission of service data by using a data transmission channel allocated for the designated target cell in the handover command after receiving the handover instruction sent by the receiving unit 504. At the same time, it is further configured to send the service data to the current cell after receiving one or more uplink TBF assignment messages sent by the receiving unit 504.
  • the transmission channel establishing unit 502 is configured to: after receiving the setup data transmission channel instruction sent by the receiving unit 504, establish, according to the new data transmission channel information allocated to the target cell in the instruction, corresponding to the target cell. New data transmission channel. Improve the data transmission success rate, thereby further improving the data transmission efficiency of the entire network.
  • an embodiment of the present invention further provides a network for transmitting data between a terminal and a network, and a sending unit, configured to send a handover command to the terminal when establishing a data transmission channel.
  • FIG. 6 is a schematic structural diagram of a preferred embodiment of a data transmission network according to the present invention.
  • the network 60 includes: a switching unit 601, a receiving unit 603, a sending unit 605, a determining unit 602, Resource allocation unit 604. among them:
  • the receiving unit 603 is configured to receive a request message for establishing an uplink data transmission channel sent from the terminal, and receive downlink service data sent to the downlink receiving terminal, and send the received information to the determining unit 602.
  • the request message for establishing an uplink data transmission channel includes an uplink TBF that the terminal wants to establish with the current cell, and a PFI corresponding to the QoS required for the service data to be transmitted.
  • the determining unit 602 is configured to determine, according to the QoS information carried in the information sent from the receiving unit 603, whether the current cell of the terminal has sufficient resources to satisfy the QoS requirement of the service data transmission, and sometimes, to the resource allocation unit 604 issues a current cell allocation instruction; or when not, issues a switching instruction to switching unit 601.
  • the switching unit 601 is configured to select a target cell after receiving the handover instruction sent by the determining unit 602, and notify the determining unit 602 of the selected target cell.
  • the determining unit 602 is further configured to: after receiving the instruction of the switching unit 601, determine whether the target cell has sufficient resources, and sometimes issue a target cell allocation instruction to the resource allocating unit 604; the resource allocating unit 604 is configured to receive After the current cell allocation instruction or the target cell allocation instruction sent by the determining unit 602, the cells are allocated resources required for the data transmission correspondingly.
  • the resource allocation unit 604 is further connected to the sending unit 605, and is configured to send a current cell allocation success instruction to the sending unit 605 when the current cell allocation is successful, or send the target to the sending unit 605 when the target cell allocation succeeds or fails.
  • the cell allocates a success or failure instruction;
  • the sending unit 605 is configured to send different messages to the terminal according to different instructions of the resource allocating unit 604, specifically: when receiving the current cell allocation success instruction, the sending unit 605 sends one or more TBFs to the terminal, and the downlink. Assigning a message; when receiving the target cell allocation success instruction, the sending unit 605 sends a handover command to the terminal; when receiving the target cell allocation failure instruction, the sending unit 605 sends an access rejection message to the terminal. Improve the data transmission success rate, thereby further improving the data transmission efficiency of the entire network.

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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 permettant de transmettre des données entre un terminal et un réseau, qui comporte les étapes suivantes : lors de l'établissement d'une voie de transmission de données, si la cellule en cours du terminal ne dispose pas de suffisamment de ressources pour répondre à la demande de transmission de données, un transfert intercellulaire du terminal est effectué vers une cellule cible, sélectionnée par le réseau selon une commande de transfert intercellulaire provenant du réseau ; et transmettre les données par l'intermédiaire de la voie de transmission de données attribuée à la cellule cible par le réseau. L'invention concerne aussi un système, un réseau et un terminal permettant de transmettre les données entre le terminal et le réseau.
PCT/CN2008/070204 2007-02-08 2008-01-29 Procédé, système, réseau et terminal pour transmettre des données entre le terminal et le réseau WO2008095437A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200710007599.1 2007-02-08
CNA2007100075991A CN101242349A (zh) 2007-02-08 2007-02-08 终端与网络间传输数据的方法、系统、网络、及终端

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WO2008095437A1 true WO2008095437A1 (fr) 2008-08-14

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1252206A (zh) * 1997-02-28 2000-05-03 诺基亚电信公司 移动通信系统中的越区切换和呼叫建立
CN1564495A (zh) * 2004-03-29 2005-01-12 中兴通讯股份有限公司 一种宽带码分多址系统中的负荷均衡方法
CN1589584A (zh) * 2001-11-23 2005-03-02 埃沃柳姆公司 分组模式蜂窝移动无线系统的小区改变方法
CN1725899A (zh) * 2000-01-17 2006-01-25 诺基亚公司 小区重新选择信令方法以及蜂窝电信系统
EP1713294A2 (fr) * 2001-10-17 2006-10-18 Nokia Corporation Procédé de transfert dans un réseau de communication mobile

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1252206A (zh) * 1997-02-28 2000-05-03 诺基亚电信公司 移动通信系统中的越区切换和呼叫建立
CN1725899A (zh) * 2000-01-17 2006-01-25 诺基亚公司 小区重新选择信令方法以及蜂窝电信系统
EP1713294A2 (fr) * 2001-10-17 2006-10-18 Nokia Corporation Procédé de transfert dans un réseau de communication mobile
CN1589584A (zh) * 2001-11-23 2005-03-02 埃沃柳姆公司 分组模式蜂窝移动无线系统的小区改变方法
CN1564495A (zh) * 2004-03-29 2005-01-12 中兴通讯股份有限公司 一种宽带码分多址系统中的负荷均衡方法

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