WO2007082406A1 - Procédé de transmission de données de liaison montante sur équipement d'utilisateur - Google Patents

Procédé de transmission de données de liaison montante sur équipement d'utilisateur Download PDF

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Publication number
WO2007082406A1
WO2007082406A1 PCT/CN2006/000065 CN2006000065W WO2007082406A1 WO 2007082406 A1 WO2007082406 A1 WO 2007082406A1 CN 2006000065 W CN2006000065 W CN 2006000065W WO 2007082406 A1 WO2007082406 A1 WO 2007082406A1
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WO
WIPO (PCT)
Prior art keywords
media access
access control
data
interface function
link control
Prior art date
Application number
PCT/CN2006/000065
Other languages
English (en)
Chinese (zh)
Inventor
Wu Luo
Xinghua Li
Chuan Ye
Original Assignee
Zte Corporation
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 Zte Corporation filed Critical Zte Corporation
Priority to PCT/CN2006/000065 priority Critical patent/WO2007082406A1/fr
Priority to CN200680035506XA priority patent/CN101273546B/zh
Publication of WO2007082406A1 publication Critical patent/WO2007082406A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation

Definitions

  • the present invention relates to an uplink data transmission method for RLC and MAC in a user equipment UE of a third generation mobile communication system, and more particularly to data transmission for RLC and MAC in a wireless communication system such as WCDMA or TD-SCDMA.
  • Background technique
  • the UE side protocol stack is the subsystem responsible for wireless communication in the UE software and is in the core position in the UE software.
  • Link Layer Specification (RLC/MAC) in the 3GPP protocol architecture, where the radio link control layer RLC is located at the second layer of the UU air interface, and provides reliable data transmission for the upper layer by using the logical channel provided by the medium access control MAC sublayer.
  • the service, its location and role is equivalent to the data link layer in the 0SI reference model, and is an important part of ensuring quality of service QoS on the radio interface.
  • the RLC sublayer introduces an ARQ (Automatic Repeat Request) mechanism.
  • RLC can provide three modes of data transmission services: transparent mode, non-acknowledgment mode and acknowledge mode.
  • ARQ is applicable to the RLC entity of the acknowledgment mode.
  • the main function of the MAC is to transmit data, that is, to provide unacknowledged data transmission to the upper layer by means of no data segmentation.
  • the UE side protocol stack usually runs in a single processor, multi-tasking embedded real-time operating system environment.
  • the MAC and RLC are designed to be different tasks, and the data transmission between the MAC and the RLC is asynchronous.
  • the message interaction mechanism according to the 3GPP protocol, its data transmission process has to undergo multiple message interactions to complete, the message sequence diagram is shown in Figure 1.
  • timing loss, RRC (Radio Resource Control), stop, suspend, rebuild command, or reset, etc. require the RLC to perform SDU (Service Data Unit) discard or interrupt data transmission. These reasons are collectively referred to as undesired interrupt procedures. .
  • the MAC and the RLC are controlled by the transmission step and state of the data recorded by the state variable in order to be interrupted and interfered with by the undesired interrupt process.
  • the MAC records that the RLC BO (Buffer Occupancy buffer) query message has been sent, waiting for the RLC to feed back the B0 information; to record that the RLC transport format message has been sent, waiting for the RLC to send the requested data; the RLC also records The B0 information required for TFC (Transport Format Combination Selection) has been sent to the MAC, and is waiting for the MAC to send an uplink data transmission format message. This process cannot be interfered by the undesired interrupt process. If an undesired interrupt process occurs during the period, Deferred the undesired interrupt process until the RLC sends the data to the MAC for execution.
  • RLC BO Buffer Occupancy buffer
  • the data transmission process of RLC and MAC in the prior art is too long and the efficiency is not high, and the design of the program is also very complicated.
  • the third generation wireless communication system has strict synchronization requirements in the wireless access process, and misses the transmission and reception. The time slot will cause communication failure.
  • the lengthy data transmission process and the asynchronous message interaction mechanism cannot ensure that data is transmitted to the network side within a prescribed time slot, thereby causing data transmission failure.
  • the present invention provides a method for transmitting uplink data on a user equipment.
  • the method provided by the present invention can simplify programming, improve system efficiency, and ensure time slot synchronization of uplink data transmission.
  • the technical solution of the present invention includes:
  • a method for transmitting uplink data on a user equipment includes the following steps -
  • the media access control After receiving the physical layer frame indication sent by the physical layer, the media access control sequentially invokes an interface function between the radio link control and the media access control to complete a data in a call function. Send.
  • the method further includes the following specific steps:
  • the wireless link control and the media access control are designed as different modules.
  • the method further includes the following specific steps:
  • the radio link control defines an interface function to count the cache occupancy
  • the media access control defines a logical channel to be queried as an input parameter, and invokes the interface function to acquire the cache occupancy of the logical channel
  • the radio link control defines an interface function to prepare data according to an uplink data transmission format, where the media access control defines an uplink data transmission format as an input parameter, and invokes the interface function to obtain uplink data.
  • the radio link control informs the media access control of the current total transmittable data and the data that can be sent in the current sending time interval when the statistical cache is occupied, and the media access control is based on the current total The data is sent for the cache occupancy measurement.
  • the method further includes the following specific steps:
  • the program design can be greatly simplified, the execution efficiency of the system is improved, the time slot synchronization of the uplink data transmission is ensured, and the RLC is prevented from being affected by the undesired interruption process in the data transmission process, and the well-defined interface is further defined.
  • the function ensures that the MAC selects the TFC according to the actual B0 condition of the RLC, improves the validity of the selection, and fully utilizes the return value of the function call, which greatly enhances the reliability of the system.
  • 1 is a schematic diagram of a sequence of sending a message according to protocol RLC and MAC uplink data in the prior art
  • FIG. 2 is a schematic diagram of a sequence of RLC and MAC uplink data transmission messages according to the present invention.
  • RLC radio link control
  • MAC media access control
  • PHY physical layer
  • PHY_FRAME_IND physical layer frame indication
  • MAC_STATUD_IND media access control status indication
  • B0 cache occupancy
  • TTI Transmit time interval
  • MAC_STATUD - RSP the media access control status response
  • TFC is the transport format combination
  • TF is the transport format
  • Logch is the logical channel
  • No - PDU is the number of protocol data units
  • PDU_Size is the protocol data unit size
  • MAC - DATA_REQ Controls data requests for media access
  • PHY-DATA-REQ is a physical layer data request
  • TX status is a transmit status.
  • the present invention proposes a new method for data transmission between a MAC and an RLC.
  • the method provided by the present invention as shown in FIG. 2 is as follows:
  • the program design is greatly simplified, the execution efficiency of the system is greatly improved, the time slot synchronization of the uplink data transmission is completely guaranteed, and a series of techniques such as defining an interface function are utilized, which obviously improves the effective selection of the system. Sex.
  • the RLC defines an interface function to collect the B0, and the MAC uses the logical channel to be queried as an input parameter, and calls the function to obtain B0 of the query logical channel.
  • the RLC defines an interface function to prepare data according to an uplink data transmission format, and the MAC uses an uplink data transmission format as an input parameter, and invokes the interface function to obtain uplink data.
  • the MAC sequentially calls the interface function provided by the RLC and the self-defined one in a function.
  • the function TFC/TF sends both the format selection function and the data assembly function, and performs a data transmission from the B0 query, the TFC/TF selection, the acquisition of the uplink data, the assembly data, and the transmission of the data to the physical layer using the PHY_DATA-REQ primitive. The complete process.
  • the key technologies of the present invention further include the following specific processes:
  • the RLC When the RLC counts the B0, the current total transmittable data and data that can be sent in the TTI are all notified to the MAC, and the MAC performs the measurement of the B0 according to the current total transmittable data. , further ensuring the effectiveness of the TFC selection.
  • the interface function When the interface function returns correctly, the data transmission process continues; when the interface function encounters an error such as memory allocation failure, the function returns an error, and the calling function aborts the current transmission, and notifies the physical layer that no data can be sent because of a system error. In this way, when the asynchronous message interaction mechanism is adopted, the MAC and the physical layer "deadly wait" for the upper layer to send data.
  • the invention greatly simplifies the program design, improves the system execution efficiency, ensures the time slot synchronization of the uplink data transmission, and avoids the influence of the RLC on the undesired interruption process in the data transmission process.
  • the effectiveness of the system selection is further enhanced, and the reliability of the system is further enhanced.

Landscapes

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

Abstract

Procédé de transmission de données en liaison montante sur équipement d'utilisateur, avec contrôle de liaison sans fil et contrôle d'accès au support dans la même tâche. La fonction d'invocation sert à assurer le transport de données entre le contrôle de liaison d'accès et le contrôle d'accès au support, et la fonction d'interface est définie. Une fois que le contrôle d'accès au support a reçu une indication de trame de couche physique de la part de la couche physique, la fonction d'interface entre le contrôle de liaison sans fil et le contrôle d'accès au support est invoquée de façon séquentielle en une fonction d'invocation, ce qui permet d'effectuer la transmission de données en une fois. Le procédé décrit permet d'assurer la transmission des données en liaison montante sur la base du contrôle de liaison sans fil et du contrôle d'accès au support considérés dans un système de communication sans fil, et l'utilisation d'un tel procédé permet de simplifier considérablement la conception de programme, d'augmenter l'efficacité d'exécution du système, d'assurer la synchronisation d'intervalle de temps sur la transmission des données en liaison montante, d'augmenter largement la validité de sélection du système et d'améliorer enfin la fiabilité du système.
PCT/CN2006/000065 2006-01-16 2006-01-16 Procédé de transmission de données de liaison montante sur équipement d'utilisateur WO2007082406A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2006/000065 WO2007082406A1 (fr) 2006-01-16 2006-01-16 Procédé de transmission de données de liaison montante sur équipement d'utilisateur
CN200680035506XA CN101273546B (zh) 2006-01-16 2006-01-16 一种在用户设备上发送上行数据的方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2006/000065 WO2007082406A1 (fr) 2006-01-16 2006-01-16 Procédé de transmission de données de liaison montante sur équipement d'utilisateur

Publications (1)

Publication Number Publication Date
WO2007082406A1 true WO2007082406A1 (fr) 2007-07-26

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PCT/CN2006/000065 WO2007082406A1 (fr) 2006-01-16 2006-01-16 Procédé de transmission de données de liaison montante sur équipement d'utilisateur

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CN (1) CN101273546B (fr)
WO (1) WO2007082406A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1326302A (zh) * 2000-05-25 2001-12-12 三菱电机株式会社 克服服务质量降低的数据传输方法
US20040028078A1 (en) * 2000-10-09 2004-02-12 Mark Beckmann Method for transmitting data packets via a radio interface of a mobile radio system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1326302A (zh) * 2000-05-25 2001-12-12 三菱电机株式会社 克服服务质量降低的数据传输方法
US20040028078A1 (en) * 2000-10-09 2004-02-12 Mark Beckmann Method for transmitting data packets via a radio interface of a mobile radio system

Also Published As

Publication number Publication date
CN101273546A (zh) 2008-09-24
CN101273546B (zh) 2011-11-23

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