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WO2008098523A1 - Procédé et dispositif permettant de retourner un rapport de situation - Google Patents

Procédé et dispositif permettant de retourner un rapport de situation Download PDF

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Publication number
WO2008098523A1
WO2008098523A1 PCT/CN2008/070317 CN2008070317W WO2008098523A1 WO 2008098523 A1 WO2008098523 A1 WO 2008098523A1 CN 2008070317 W CN2008070317 W CN 2008070317W WO 2008098523 A1 WO2008098523 A1 WO 2008098523A1
Authority
WO
WIPO (PCT)
Prior art keywords
sub
status report
pdu
segment
area
Prior art date
Application number
PCT/CN2008/070317
Other languages
English (en)
Chinese (zh)
Inventor
Jiamin Liu
Haizhou Bi
Guoqing Li
Zhuo Gao
Original Assignee
Da Tang Mobile Communications Equipment 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 Da Tang Mobile Communications Equipment Co., Ltd. filed Critical Da Tang Mobile Communications Equipment Co., Ltd.
Publication of WO2008098523A1 publication Critical patent/WO2008098523A1/fr

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Classifications

    • 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
    • H04L1/1809—Selective-repeat protocols
    • 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
    • H04L1/1607—Details of the supervisory signal
    • H04L1/1628—List acknowledgements, i.e. the acknowledgement message consisting of a list of identifiers, e.g. of sequence numbers

Definitions

  • the present invention relates to the field of mobile communications technologies, and in particular, to a method and device for receiving a status report of a radio link control (RLC) receiver.
  • RLC radio link control
  • the RLC layer acknowledgement mode (AM) in the TD-SCDMA system improves the correct probability of the Protocol Data Unit (PDU) transmission through the receiver feedback mechanism and the sender retransmission mechanism.
  • the receiver sends one or Multiple status reports to inform the sender that the PDU has been successfully received, or to request retransmission of the PDU in which the error occurred.
  • the sender releases the buffer occupied by the PDU that has been confirmed to be successfully received, or performs necessary retransmission on the PDU requesting retransmission according to the status report.
  • LIST LIST
  • BITMAP BITMAP
  • RLIST RLIST
  • All of the above three status reports are identified by the PDU sequence number.
  • the transmitting end After receiving the LIST status report fed back by the receiving end, the transmitting end retransmits the entire PDU to the receiving end according to the PDU sequence number.
  • the above approach has the problem that the feedback is not accurate enough.
  • the so-called re-segmentation means that when the transmitting end prepares to resend the PDU, it finds that the resources are insufficient. Therefore, the PDU needs to be segmented again according to the size of the resource.
  • LTE Long Term Evolution
  • the RLC layer needs to support re-segmentation of PDUs.
  • the PDU that is not correctly received may be the entire PDU, but it may also be that only some PDU sub-segments have problems. In the latter case, the existing receiver will also The entire PDU sequence number is reported.
  • the sender retransmits the entire PDU according to the status report, and performs unnecessary retransmission on the correct sub-segment, resulting in waste of resources and reduced system throughput.
  • the present invention provides a method and a device for reporting a status report, which are used to solve the problem that the status report of the existing solution feedback is not accurate.
  • the present invention uses the following technical solutions:
  • a method for reporting a status report includes: creating a PDU status report including an erroneous sub-segment identifier; and feeding back the status report to a sender.
  • the sub-segment identifier is represented by a sub-segment position and a sub-segment length; or, the sub-segment identifier refers to a sub-segment label.
  • the status report further includes a segmentation indication, one segment indication corresponding to one PDU feedback information; for feedback information for the entire error PDU, the segmentation indication is set to a first value; for feedback information for the PDU error subsection, Set the segmentation indication to the second value.
  • the status report further includes an area indication, and an area indicates an area corresponding to the status indication: for the area fed back for the entire error PDU, the area indication is set to a third value; for the feedback of the PDU error sub-segment Area, set the area indication to the fourth value.
  • the method further includes: the sender parses the status report, and retransmits the error sub-segment.
  • the status report also includes a PDU sequence number.
  • a device for reporting status reports including:
  • the feedback interface unit feeds back a status report indicating the reception status of the PDU to the sender; the status report creation unit: creates a PDU status report containing the identifier of the error sub-segment.
  • the state information creation unit includes: a sub-section identification unit, and provides a sub-segment identifier consisting of a sub-segment position and a sub-segment length.
  • the status information creation unit includes:
  • the sub-section identification unit provides a sub-segment identifier consisting of sub-segment labels.
  • the status information creation unit further includes:
  • the status information creation unit further includes:
  • the area indicating unit provides an area indication of whether a sub-segment needs to be fed back, and an area indicates an area corresponding to the status report:
  • the area indication is set to a third value for the area that is fed back for the entire error PDU; the area indication is set to the fourth value for the area that is fed back for the PDU error sub-segment.
  • the embodiment of the present invention specifically specifies the information of the erroneous sub-segment in the status report, so that the feedback is more accurate.
  • the specific indication of the status report only the erroneous sub-segments are retransmitted, unnecessary retransmission is avoided, system overhead is saved, and system throughput is improved.
  • FIG. 1 is a schematic diagram of a prior art LIST status report
  • FIG. 3 is a schematic diagram of a status report format according to Embodiment 2 of the present invention
  • 4 is a schematic diagram of receiving a PDU according to Embodiment 2 of the present invention
  • FIG. 5 is a schematic diagram of a status report according to Embodiment 2 of the present invention.
  • FIG. 6 is a schematic diagram of receiving a PDU according to Embodiment 3 of the present invention.
  • FIG. 7 is a schematic diagram of a third status report according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of receiving a PDU according to Embodiment 4 of the present invention.
  • FIG. 9 is a schematic diagram of a fourth status report according to an embodiment of the present invention.
  • Figure 10 is a schematic structural view of the device of the present invention.
  • the core idea of the embodiment of the present invention is that when the receiving end reports the organization status, the identifier of the error sub-segment is added.
  • FIG. 2 it is a flowchart of Embodiment 1.
  • Embodiment 1 includes:
  • Step 201 Create a PDU status report that includes an error sub-segment identifier.
  • the sub-segment that is not correctly received is clearly indicated by the erroneous sub-segment identifier.
  • the erroneous sub-segment identifier is combined with the original PDU sequence number, and it can be clearly informed which PDU of the PDU has a problem with which sub-segment.
  • the sender after receiving the status report, the sender will re-transmit only the erroneous sub-segment of a PDU according to the erroneous sub-segment in the status report, and consider the receiving end for the un-identified sub-segment of the PDU. It has been received correctly, and unnecessary retransmissions are not performed, thereby avoiding waste of resources and increasing system throughput.
  • the second embodiment is described below:
  • this embodiment provides a way to create a status report with a sub-segment identification. If the receiving error occurs in the entire PDU, that is, the entire PDU receiving status needs to be fed back, the sequence number SN of the PDU is directly used in the status report; if a certain sub-segment of the PDU receives a receiving error, that is, the PDU is required. The sub-segments are fed back, and the status report uses the SN of the PDU plus the corresponding sub-segment identifier to identify.
  • Reseg_flag indicates whether to perform the PDU segmentation indication flag, and a Reseg_flag corresponds to a PDU feedback information.
  • the flag size can be lbit.
  • the Reseg_flag is set to the first value, for example, '0,; In the case where the segmentation indication is required, the Reseg_flag is set to the second value, for example, ' 1,. This clearly distinguishes whether a segmentation indication is needed.
  • Reseg—info subsection identifier
  • Reseg—info is used to indicate which of the SN PDUs (sub) sub-segments need to be retransmitted.
  • a status report it can contain mixed information of the entire PDU and PDU sub-segments, each of which is formatted by Reseg_flag; or it can contain information of multiple complete PDUs and multiple PDU sub-segments.
  • Reseg_flag is set to ' ⁇ , indicating that the incorrectly received information reported this time is a sub-section of the PDU;
  • Offset set to 100, indicating that the retransmission needs to start from the 100th unit (byte or bit) of PDU2;
  • Length Set to 200, indicating that the sub-segment that needs to be retransmitted is 200 units (bytes or bits).
  • Offset 100, which means starting from the 100th unit of PDU2;
  • Length 200, which means that the sub-segment that needs to be retransmitted is 200 units long.
  • the receiving end By receiving such a status report, the receiving end will clearly know which part of the data needs to be retransmitted at the transmitting end, thereby avoiding redundant retransmission.
  • this embodiment provides a way to create a status report with a sub-segment identification.
  • the status report format shown in Fig. 3 is also used. But the difference is that the sub-segment ID Reseg_info does not use the "Offset + Length" method, but the sub-segment mark Sub-index.
  • the sub1 and sub3 subsegments of PDU3 and PDU2 are received correctly, and the entire PDU1 and sub2 subsegments of PDU2 receive errors.
  • Reseg—flagl 0, representing feedback for the entire PDU
  • Reseg_flag2 1 , representing feedback for the PDU subsection
  • Sub_index 2, representing the second subsection of PDU2.
  • the Reseg-flag is used, and the embodiment uses the "area indication" to organize the status.
  • Region—flag area i or indication
  • a Region_flag corresponds to an area of the status report.
  • the status report has two areas: an area that is fed back for the entire PDU, and an area that is fed back for the PDU part subsection.
  • the Region_flag is set to a third value, for example, '0, in the case of feedback for the entire PDU, and the Region_flag is set to a fourth value, for example, for the PDU partial subsection. 1'. This clearly distinguishes which area it belongs to.
  • the sub-segment identifier Reseg_info can still use the "Offset + Length" method of the second embodiment; or the sub-segment label Sub-index in the third embodiment can be used.
  • Region_flag 0, representing feedback for the entire PDU
  • SN3 5, representing PDU5;
  • Region—flag 1 , representing feedback for subsections of the PDU
  • Sub_index4 2 , representing the second subsection of PDU2;
  • Sub_index5 1 , representing the first subsection of PDU4.
  • the entire PDU feedback information is placed together, and the PDU part sub-segment feedback information is placed together, so that it is not necessary to perform a segmentation identification for each PDU.
  • the PDU sequence number and the sub-segment identification are used to uniquely indicate the information of the erroneous sub-segment.
  • the present invention further provides a device for reporting a status report, specifically
  • the RLC entity at the receiving end of the RLC in addition to the function of the general RLC entity, also has the function of feeding back the status report of the specific error sub-segment.
  • FIG. 10 it is a schematic diagram of the internal structure of the device provided by the present invention.
  • This device includes a status report creating unit 1001 and a feedback interface unit 1002. among them:
  • the feedback interface unit 1001 is configured to feed back a status report indicating the reception status of the PDU to the transmitting end RLC entity.
  • the status report creating unit 1002 is a core unit of the device of the present invention, and is used to create a PDU status report, where the PDU status report includes the present. In addition to ( SN ), it also contains the sub-segment identifier (Reseg_ info ) of the erroneous sub-segment. For details, refer to method embodiment 1.
  • the status report creation unit 1002 includes a sub-section identification unit.
  • the sub-segment identification unit provides a sub-segment identifier consisting of an error sub-segment position (Offset) and an error sub-segment length (Length). For details, refer to method embodiment 2.
  • the sub-segment identification unit provides a sub-segment identifier consisting of a sub-segment label (sub-index). For details, refer to method embodiment 3.
  • the status report creating unit 1002 also includes a segment indicating unit.
  • the segmentation indication unit provides a segmentation indication (Reseg_flag) of whether the sub-segment needs to be fed back: the segmentation indication is set to a first value for feedback for the entire error PDU; for the feedback of the PDU error sub-segment, the segmentation The indication is set to the second value.
  • the state 4 obituary creating unit 1002 further includes an area indicating unit.
  • the area indication unit is configured to provide an area indication (Region_flag) of whether the sub-segment needs to be fed back: For all feedback for the entire error PDU, the area indication is set to a third value; for all feedback for the PDU error sub-section, the area is The indication is set to the fourth value.
  • an area indication (Region_flag) of whether the sub-segment needs to be fed back: For all feedback for the entire error PDU, the area indication is set to a third value; for all feedback for the PDU error sub-section, the area is The indication is set to the fourth value.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé permettant de retourner un rapport de situation. Le procédé est mis en œuvre comme suit: selon la configuration de réception du récepteur, lorsque la configuration de réception de la sous-section de la PDU est désirée, établir un rapport de situation de la PDU comprenant un identificateur de sous-section d'erreur; retourner ce rapport de situation à l'émetteur. L'information de sous-section d'erreur est concrètement indiquée, ce qui rend la rétro-information plus exacte. En conséquence, seule la retransmission de la sous-section d'erreur, effectuée au niveau de l'émetteur suivant l'indication concrète du rapport de situation, permet d'éviter une retransmission inutile, d'économiser les ressources du système et d'améliorer le rendement du système. L'invention concerne en outre un dispositif qui permet de retourner le rapport de situation et d'accomplir efficacement la rétro-information en fonction de la sous-section d'erreur de la PDU.
PCT/CN2008/070317 2007-02-15 2008-02-15 Procédé et dispositif permettant de retourner un rapport de situation WO2008098523A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200710063982.9 2007-02-15
CNB2007100639829A CN100531023C (zh) 2007-02-15 2007-02-15 反馈状态报告的方法及设备

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Publication Number Publication Date
WO2008098523A1 true WO2008098523A1 (fr) 2008-08-21

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WO (1) WO2008098523A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101771518B (zh) * 2008-12-29 2013-06-12 电信科学技术研究院 一种发送状态报告的方法、装置及系统
WO2014075284A1 (fr) * 2012-11-16 2014-05-22 华为技术有限公司 Procédés de retour d'informations et retransmission de données, et appareil correspondant
CN107203564B (zh) * 2016-03-18 2020-11-24 北京京东尚科信息技术有限公司 数据传输的方法、装置及系统
CN110958084B (zh) * 2018-09-27 2021-12-14 华为技术有限公司 传输确认报文的方法和通信设备

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1419385A (zh) * 2001-11-13 2003-05-21 华硕电脑股份有限公司 具有稳健的无线链路控制重置程序的无线通讯系统
CN1524364A (zh) * 2001-05-18 2004-08-25 ��˹��ŵ�� 分组按序的混合自动重复请求(harq)方案
CN1697556A (zh) * 2004-05-12 2005-11-16 华为技术有限公司 一种状态报告的传输方法
CN1711726A (zh) * 2002-11-08 2005-12-21 皇家飞利浦电子股份有限公司 数据分组在封装中的传输
US20060072494A1 (en) * 2004-09-29 2006-04-06 Matusz Pawel O UMTS radio link control with full concatenation

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1524364A (zh) * 2001-05-18 2004-08-25 ��˹��ŵ�� 分组按序的混合自动重复请求(harq)方案
CN1419385A (zh) * 2001-11-13 2003-05-21 华硕电脑股份有限公司 具有稳健的无线链路控制重置程序的无线通讯系统
CN1711726A (zh) * 2002-11-08 2005-12-21 皇家飞利浦电子股份有限公司 数据分组在封装中的传输
CN1697556A (zh) * 2004-05-12 2005-11-16 华为技术有限公司 一种状态报告的传输方法
US20060072494A1 (en) * 2004-09-29 2006-04-06 Matusz Pawel O UMTS radio link control with full concatenation

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CN100531023C (zh) 2009-08-19
CN101247209A (zh) 2008-08-20

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