WO2008031296A1 - Procédé de manipulation de détermination pour un nombre de séquences de données dans un protocole orienté connexion propre à un service - Google Patents

Procédé de manipulation de détermination pour un nombre de séquences de données dans un protocole orienté connexion propre à un service Download PDF

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Publication number
WO2008031296A1
WO2008031296A1 PCT/CN2006/003806 CN2006003806W WO2008031296A1 WO 2008031296 A1 WO2008031296 A1 WO 2008031296A1 CN 2006003806 W CN2006003806 W CN 2006003806W WO 2008031296 A1 WO2008031296 A1 WO 2008031296A1
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WIPO (PCT)
Prior art keywords
sequence number
receiving
buffer
data
protocol
Prior art date
Application number
PCT/CN2006/003806
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English (en)
Chinese (zh)
Inventor
Dianxiong Hu
Pei Fan
Zesheng Zhao
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
Publication of WO2008031296A1 publication Critical patent/WO2008031296A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/32—Flow control; Congestion control by discarding or delaying data units, e.g. packets or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/34—Flow control; Congestion control ensuring sequence integrity, e.g. using sequence numbers

Definitions

  • the present invention relates to a processing method for a service specific connection-oriented protocol SSCOP (SERVICE SPECIFIC CONNECTION ORIENTED PROTOCOL) in an asynchronous transmission mode ATM signaling network.
  • SSCOP service specific connection-oriented protocol
  • the SS method is used in the SSCOP protocol layer for the sequenced data SD (Sequenced Data) sequence number.
  • SD Sequenced Data
  • SSCOP is used on the Iu interface between the core network CN and the radio network controller RNC, the lub interface between the RNC and the base station NodeB, and the Iur interface between the RNCs.
  • the protocol performs reliable transmission of signaling data.
  • the SSCOP protocol is responsible for the transmission of information and control information between two peer-to-peer entities.
  • the upper layer provides services for the service-specific coordination function layer SSCF, and the lower layer interacts with the common part of the ATM adaptation layer, the sub-layer AAL CPCS.
  • the SSCOP protocol is defined by the international communication standard ITU-T Q.2110 and provides the following functions: Sequence integrity: Ensures that the transmitted SDCOP SD protocol data unit PDUs are in the same order; Error retransmission: The SSCOP entity at the receiving end is detecting the missing SSCOP service data. When the unit SDU is used, the retransmission mechanism is used for error correction.
  • Flow control adjust the transmission rate to adjust the transmission window for flow control; report error to LM: report error to LM; keep link activated: two peers The SSCOP entity can remain connected for a period of time without data transmission.
  • Local data retrieval When the link switching occurs on the upper layer, the local SSCOP user can retrieve the SDU that is not released by SSCOP.
  • Connection Control This function includes SSCOP. Connection establishment, release, synchronization, and undefined transmission of user-to-user messages to users of different lengths; Data transfer: Transfer of user data between SSCOP users and support both deterministic and non-deterministic data transfers; Protocol error recovery: Detection and recovery of protocol operational errors; Status report: Exchange of status information between sending/receiving peers .
  • the basic variables of the SSCOP protocol are described below:
  • VR(R) The serial number of the next expected SD PDU, plus 1 after receipt.
  • VR(H) The next largest SD PDU that is expected to be received, updates VR(H) when a new SD PDU or POLL PDU is received.
  • VR(MR) The maximum number of SD PDUs allowed to be received.
  • N(S) The serial number of the current SD PDU.
  • the SSCOP processing process increments VR(R) by 1, and then finds whether there is an SD with the sequence number equal to VR(R)+1 in the receive buffer, and SD1 will It was successfully submitted to the upper layer of the business layer, but this is the SD1 with the serial number NS, not the correct SD that the user needs.
  • the principle of order consistency that is followed when the SSCOP protocol forwards data violates the business exception, causing the receiver to receive buffered data.
  • the serial number of the received SD is less than VR(R)
  • the SSCOP ten is not handled properly, and needs to be modified.
  • the technical problem to be solved by the present invention is to propose a service specific aspect.
  • the method for judging the ordered data sequence number in the connection protocol In the data transmission phase, when the receiver receives the SD sent by the peer, and SD.N(S) is less than VR(R), the receiver can be avoided.
  • the present invention proposes a method for judging ordered data numbers in a service-specific connection-oriented protocol, and after receiving the ordered data SD, the received data is based on the ordered data.
  • Serial number The values of the SD.N(S) and SSCOP protocol basic variables are judged and the SD is processed according to the judgment result, and the method further includes: determining the ordered data serial number SD, N(S) in the determining and processing process.
  • the receiver After receiving the ordered data SD, the receiver performs the following judgment and processing:
  • (a) Determine its serial number SD.N(S): If SD.N(S) is greater than or equal to the maximum sequence number VR(MR) of the packet to be received, discard the SD and end; if SD.N(S) Equal to the sequence number VR(R) of the expected received packet, send it to the upper layer service and check the receive buffer, send the legal data to the service layer, and end; if SD.N(S) is less than VR (R), discarding the ordered data, ending; if SD.N(S) is greater than VR(R) and less than VR(MR), performing step (b);
  • step (b) Check if there is enough space in the receive buffer to save the SD, if not, end, otherwise, proceed to step (c);
  • step (c) determining whether SD.N(S) is equal to or greater than the maximum sequence number VR(H) of the ordered data that is expected to be received, and if so, saving the SD in the buffer; otherwise, performing step (d);
  • step (d) Determine whether there is the SD with the same serial number in the receive buffer. If yes, do the protocol error recovery processing with the error type Q. Otherwise, save the SD in the buffer. Further, the above method may further have the following features: In the step (a), SD.N(S) is smaller than
  • VR( ), performs protocol error recovery processing with error type Q, and ends. Further, the above method may also have the following features: In the step- ⁇ (a), when SD.N(S) is greater than VR(MR), check whether the local end has received lost space, and if so, to the opposite end Send an unsolicited status PDU, if not, end the process.
  • the present invention increases the judgment process of whether the serial number of the SD is greater than the lower boundary VR(R) of the receiving window in the data transmitting phase, and if the serial number of the SD is smaller than the lower boundary of the receiving window, Therefore, it is necessary to take measures and not save it in the receiving buffer of the receiver, thereby avoiding the receiving buffer buffer confusion and the upper layer service being abnormal.
  • FIG. 1 is a flow chart of a process after receiving an SD in the prior art.
  • FIG. 2 is a schematic diagram of the receiving buffer confusion caused by the processing flow of FIG. 1.
  • FIG. 3 is a flow chart showing the processing of the SD serial number in the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 3, based on the original processing of the SD serial number, the determination process of the SD serial number and the lower boundary of the receiving window VR(R) is added. The specific steps are as follows: Step 110: Determine whether SD.N(S) is smaller than VR (MR), that is, whether the SD is within the upper boundary of the receiving window WinLen.
  • MR VR
  • Step 120 It is judged whether the SD is the next SD that the terminal expects to receive, that is, whether SD.N(S) is equal to VR(R), and if it is "true", the SD is sent to the upper layer service and the receiving buffer is checked.
  • Step 130 determining whether the serial number of the SD is greater than VR(R), that is, determining whether the SD falls within the lower boundary of the receiving window, if the description is If the data is out of order, the SD is discarded, and the protocol error recovery processing of the error type Q is performed, and the process ends. Otherwise, step 140 is performed; the protocol error recovery processing of the error type Q is performed in the protocol, and the data transfer timer reset data transfer is first reset. Timer, then sends MAA_ERROR-indication(Q) to the layer management, and finally performs error recovery processing.
  • Step 140 Check whether there is enough space in the receiving buffer to save the SD.
  • Step 150 determine whether the serial number of the SD is equal to VR (H). ), if it is "true”, save the SD in the buffer, otherwise, proceed to step 160;
  • Step 160 Determine whether the serial number of the SD is greater than VR(H). If it is "true”, save the SD in the buffer. Because a new lost interval is generated, an unsolicited status PDU needs to be sent to the opposite end to notify the opposite end.
  • step 170 determining whether the SD is in the receiving buffer, that is, checking whether there is an SD with the same serial number in the receiving buffer, if "True", do the protocol error recovery processing with the error type Q, otherwise, save the SD in the buffer.
  • the step 130 determines whether the serial number of the SD is greater than VR(R), and after placing the SD, checks whether there is any space in the receiving buffer before there is enough space; and steps 110 and 120 The order can be changed.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Communication Control (AREA)

Abstract

L'invention concerne un procédé de manipulation de détermination pour un nombre de séquences de données dans un protocole orienté connexion propre à un service après réception des données séquencées (SD) destiné à déterminer selon le nombre de séquences de données (SD.N(S)) une valeur de variable de SSCOP et utilise la SD d'après la détermination, à déterminer si SD.N(S) est inférieur au nombre de séquences (VR(R)) du paquet suivant de données par rapport aux prévisions selon la fenêtre de réception. Si le champ sélectionné est oui, la SD n'est pas retenue et le processus prend fin, en revanche si le champ sélectionné est non, le processus se poursuit et la détermination et manipulation suivantes sont enclenchées.
PCT/CN2006/003806 2006-09-11 2006-12-31 Procédé de manipulation de détermination pour un nombre de séquences de données dans un protocole orienté connexion propre à un service WO2008031296A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNA2006101269646A CN101146024A (zh) 2006-09-11 2006-09-11 业务特定面向连接协议中对有序数据序号的判断处理方法
CN200610126964.6 2006-09-11

Publications (1)

Publication Number Publication Date
WO2008031296A1 true WO2008031296A1 (fr) 2008-03-20

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PCT/CN2006/003806 WO2008031296A1 (fr) 2006-09-11 2006-12-31 Procédé de manipulation de détermination pour un nombre de séquences de données dans un protocole orienté connexion propre à un service

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CN (1) CN101146024A (fr)
WO (1) WO2008031296A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008046576A1 (de) 2008-09-10 2010-03-18 Siemens Aktiengesellschaft Dreiphasige Drosselspuleneinrichtung

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105743815B (zh) * 2016-04-06 2021-09-10 腾讯科技（深圳）有限公司 抖动缓冲数据处理的方法和装置
CN109714326A (zh) * 2018-12-21 2019-05-03 北京明朝万达科技股份有限公司 一种应用层数据顺序组包方法、装置、设备及存储介质

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11145989A (ja) * 1997-11-13 1999-05-28 Matsushita Electric Ind Co Ltd Ａｔｍ通信装置及びａｔｍ通信方法
JPH11261593A (ja) * 1998-03-06 1999-09-24 Nec Corp Ｓｓｃｏｐ再送処理異常時のリカバリ方式
CN1561487A (zh) * 2001-04-25 2005-01-05 诺基亚公司 用于重定序和重发实体之间的层间控制的方法和系统
CN1768498A (zh) * 2001-10-19 2006-05-03 艾利森电话股份有限公司 在自动重复请求协议中避免停机状态和顺序号不确定性

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11145989A (ja) * 1997-11-13 1999-05-28 Matsushita Electric Ind Co Ltd Ａｔｍ通信装置及びａｔｍ通信方法
JPH11261593A (ja) * 1998-03-06 1999-09-24 Nec Corp Ｓｓｃｏｐ再送処理異常時のリカバリ方式
CN1561487A (zh) * 2001-04-25 2005-01-05 诺基亚公司 用于重定序和重发实体之间的层间控制的方法和系统
CN1768498A (zh) * 2001-10-19 2006-05-03 艾利森电话股份有限公司 在自动重复请求协议中避免停机状态和顺序号不确定性

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008046576A1 (de) 2008-09-10 2010-03-18 Siemens Aktiengesellschaft Dreiphasige Drosselspuleneinrichtung

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