WO2012109848A1 - Procédé, dispositif et système de retransmission de signalisation sur la base d'un protocole de transmission des commandes de flux - Google Patents

Procédé, dispositif et système de retransmission de signalisation sur la base d'un protocole de transmission des commandes de flux Download PDF

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Publication number
WO2012109848A1
WO2012109848A1 PCT/CN2011/077740 CN2011077740W WO2012109848A1 WO 2012109848 A1 WO2012109848 A1 WO 2012109848A1 CN 2011077740 W CN2011077740 W CN 2011077740W WO 2012109848 A1 WO2012109848 A1 WO 2012109848A1
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WO
WIPO (PCT)
Prior art keywords
signaling
data packet
packet
lost
sack
Prior art date
Application number
PCT/CN2011/077740
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English (en)
Chinese (zh)
Inventor
牛晓莉
朱伟
Original Assignee
华为技术有限公司
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.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201180001350.4A priority Critical patent/CN102308512B/zh
Priority to PCT/CN2011/077740 priority patent/WO2012109848A1/fr
Publication of WO2012109848A1 publication Critical patent/WO2012109848A1/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
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1896—ARQ related signaling
    • 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
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1887—Scheduling and prioritising arrangements

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a signaling retransmission method, apparatus, and system based on a flow control transmission protocol.
  • Femto A network device that provides wireless access to home/enterprise users on a fixed IP transport network.
  • WCDMA Wideband Code Division Multiple Access
  • macrocells operators can provide better wireless broadband voice services and data services to home users at a lower cost.
  • Femto will be an important means for full-service operators to offer differentiated services. Since the IP network is transmitted between Femto and the core network, the damage of the transmission network has an important impact on the establishment of the Femto service and the quality of the service.
  • SCTP Stream Control Transmission Protocol
  • HNB Home NodeB, Home Node Station
  • HNB-GW Home NodeB GateWay, the home base station gateway
  • the embodiments of the present invention provide a signaling retransmission method, apparatus, and system based on a flow control transmission protocol (SCTP) to implement SCTP signaling retransmission.
  • SCTP flow control transmission protocol
  • a signaling retransmission method based on a flow control transmission protocol comprising: Adding multiple verification data packets after the independent signaling data packet, numbering the independent signaling data packet and the multiple verification data packets, and numbering the independent signaling data packet and the multiple verification data packets according to the number Send to the receiving end in turn;
  • the determined lost signaling data packet is sent to the receiving end.
  • the present invention further provides a signaling retransmission apparatus based on a flow control transmission protocol (SCTP), comprising: a numbering unit, configured to add a plurality of verification data packets after an independent signaling data packet, and to the independent signaling data packet And multiple verification packets are numbered;
  • SCTP flow control transmission protocol
  • a sending unit configured to send the independent signaling data packet and the plurality of verification data packets after the numbering to the receiving end according to the number;
  • a first receiving unit configured to receive a selective acknowledgement SACK packet sent by the receiving end, where the SACK packet carries a number of a lost signaling data packet;
  • a first determining unit configured to determine whether the number of received SACK packets containing the same lost signaling data packet reaches a preset value
  • a determining unit configured to determine, when the determination result of the first determining unit is YES,
  • the signaling packet corresponding to the number of the same lost signaling packet in the SACK is lost;
  • a retransmission unit configured to send the determined lost signaling data packet to the receiving end.
  • the present invention also provides a signaling transmission system based on a flow control transmission protocol (SCTP), comprising: a signaling retransmission device and a signaling receiving device, where:
  • SCTP flow control transmission protocol
  • the signaling retransmission device includes:
  • a numbering unit configured to add multiple verification data packets after the independent signaling data packet, and number the independent signaling data packet and the multiple verification data packets;
  • a sending unit configured to send the independent signaling data packet and the plurality of verification data packets after the numbering to the signaling receiving device according to the number
  • a first receiving unit configured to receive a selective acknowledgement SACK packet sent by the signaling receiving device, where the SACK packet carries a number of a lost signaling data packet
  • a first determining unit configured to determine whether the number of received SACK packets containing the same lost signaling data packet reaches a preset value
  • a determining unit configured to determine, when the determination result of the first determining unit is YES,
  • the signaling packet corresponding to the number of the same lost signaling packet in the SACK is lost;
  • the signaling receiving apparatus includes:
  • a second receiving unit configured to receive an independent signaling data packet and multiple verification data packets sent by the signaling retransmission device
  • a second determining unit configured to determine, after each receiving the data packet, whether the number of the received independent signaling data packet and the plurality of verification data packets is continuous;
  • a SACK message generating unit configured to generate a SACK message and send the SACK message to the signaling retransmission device, where the SACK message carries a lost signaling packet The number.
  • the transmitting end adds multiple verification data packets after the independent signaling data packet, and numbers the independent signaling data packet and the multiple verification data packets, and After the numbering, the independent signaling data packet and the plurality of verification data packets are sequentially sent to the receiving end according to the number, and when the transmitting end receives the number of SACK packets that are sent by the receiving end and contain the number of the same lost signaling data packet, After the preset value is reached, the signaling end packet corresponding to the number of the missing signaling packet in the multiple SACK messages is lost, and the signaling data packet is retransmitted to implement the lost signaling data.
  • the package is effectively retransmitted in time.
  • FIG. 1 is a flowchart of an SCTP-based signaling retransmission method according to an embodiment of the present invention
  • FIG. 2 is another flowchart of an SCTP-based signaling retransmission method according to another embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of an SCTP-based signaling retransmission apparatus according to another embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of an SCTP-based signaling transmission system according to still another embodiment of the present invention.
  • the various techniques described herein can be used in various wireless communication systems, such as current 2G, 3G communication systems and next generation communication systems, for example, the present invention is applicable to UMT, GSM (Global System for Mobile communications, Global System for Mobile Communications), GPRS (General Packet Radio Service), CDMA2000 (Code Division Multiple Access 2000), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access, Time Division Synchronization Code) Multiple Access Access Technology, LTE (Long Term Evolution), WLAN (Wireless Local Area Network) / WiFi (Wireless Fidelity) and WiMAX ( Worldwide Interoperability for Microwave Access, Wireless networks such as the Worldwide Interoperability for Microwave Access.
  • GSM Global System for Mobile communications, Global System for Mobile Communications
  • GPRS General Packet Radio Service
  • CDMA2000 Code Division Multiple Access 2000
  • TD-SCDMA Time Division-Synchronous Code Division Multiple Access, Time Division Synchronization Code
  • LTE Long Term Evolution
  • WLAN Wireless Local Area Network
  • WiFi
  • system and “network” are often used interchangeably herein.
  • the transmitting end When transmitting a data packet, according to the existing protocol, the transmitting end sequentially numbers each data packet, and the receiving end detects the packet loss or out-of-order according to whether the number of the subsequently received data packet is consecutive with the previous number. When the receiving end detects that the number of the data packet is not continuous, it immediately sends it to the sender. The terminal replies with a SACK (Selective Acknowledgement) message, which carries the number of the missing data packet. When the receiving end receives three SACK packets carrying the same missing packet number, it can confirm The packet is lost and retransmitted immediately.
  • SACK Selective Acknowledgement
  • This selective acknowledgment and retransmission mechanism mainly confirms the sequence number of the lost data packet by the arrival of subsequent data packets, and triggers packet loss retransmission.
  • the subsequent packet cannot be used to trigger SACK and fast retransmission, for example: 1.
  • the signaling packet Discontinuity that is, subsequent fragmented data packets cannot trigger SACK packets in time to perform packet loss confirmation. Therefore, when a signaling packet is lost, the initiator can only wait for the RTO (Recovery Time Object) timeout (usually 3s) before triggering the retransmission of the lost packet.
  • RTO Recovery Time Object
  • FIG. 1 is a flowchart of a method for signaling retransmission based on SCTP according to an embodiment of the present invention.
  • the SCTP-based signaling retransmission method includes:
  • the sending end adds multiple verification data packets after the independent signaling data packet, and numbers the independent signaling data packet and the multiple verification data packets, and numbers the independent signaling data packet and the multiple verification data packets according to the numbering.
  • the numbering sequence is sent to the receiving end in turn.
  • the function of multiple verification data packets is to increase the density of the data packets sent by the sender and reduce the transmission interval.
  • multiple verification data packets and subsequent independent signaling data packets can trigger the reception.
  • the SACK message is sent by the terminal, which reduces the acknowledgement and retransmission time of the packet loss of the signaling packet.
  • it can be constructed as small as possible when constructing the verification packet. Packet.
  • the sending end receives the SACK packet sent by the receiving end, and determines whether the number of received SACK packets containing the same missing signaling data packet reaches a preset value.
  • the receiving end Each time the receiving end detects that the number of the newly received data packet is not continuous with the number of the previously received data packet, it immediately replies with a SACK message to the transmitting end, and the SACK message carries the lost signaling data packet. The number.
  • a preset value of the number of SACK packets is set in the sending end, that is, when the number of SACK packets received by the transmitting end is less than a preset value, the data packet is considered to be missing.
  • the number of received SACK packets reaches a preset value, it is determined that the signaling packet corresponding to the number of the signaling packet carried in the SACK packet is lost.
  • the number of SACK packets mentioned here reaches a preset value, which means that the number of SACK packets containing the same number of lost signaling packets reaches a preset value.
  • the signaling data packet corresponding to the number of the same lost signaling data packet in the multiple SACK messages is determined.
  • the number of the lost signaling packets carried in the first SACK packet is 1, and the number of the lost signaling packets carried in the second SACK packet is 1, 3, and the third SACK packet is carried in the third SACK packet.
  • the number of the lost signaling packets is 1, 3, and 4, and the number of the same lost signaling packets carried in the three SACK packets is 1, that is, the number 1 packet is lost.
  • S14 The sending end sends the determined lost signaling data packet to the receiving end.
  • FIG. 2 is another flow chart of a SCTP-based signaling retransmission method according to another embodiment of the present invention.
  • the SCTP-based signaling retransmission method includes:
  • S21 The sender numbers the independent signaling data packet and the multiple verification data packets.
  • the sender will number each packet in the order in which it is sent. and Moreover, since the function of the multiple verification data packets is to verify whether the receiving end receives the independent signaling data packet after the independent signaling data packet is sent, it is only necessary to ensure that the sending order of the multiple verification data packets is located in the independent signaling data packet. Then you can.
  • the number of the multiple verification data packets may be sequentially located after the independent signaling data packet, or the number of the subsequent independent signaling data packet may be added to Between the numbers of multiple verification packets, for example: three independent signaling packets have three authentication packets, and the first independent signaling packet is numbered 1, then the first independent signaling packet The number of the three verification data packets may be 2, 3, and 4, respectively, or the number of the three verification data packets of the first independent signaling data packet is 2, 4, and 5, respectively, and the second independent signaling is performed. The number of the data packet is 3, no matter which of the above numbering methods, it does not affect the role of multiple authentication data packets.
  • S23 The receiving end detects whether the numbers of all received data packets are consecutive, and immediately generates a SACK message when the numbers of all received data packets are not consecutive.
  • the receiving end When the receiving end receives the data packet, it will detect the number of all received data packets, that is, start detecting the number of the first received data packet, and check whether all the data packets are consecutive, and When there is a number discontinuity in all received packets, the missing number is recorded.
  • the receiving end After each detection, if the number is not continuous, the receiving end will immediately generate a SACK message, and the SACK message carries the missing number, that is, the number corresponding to the lost data packet, and will be generated.
  • the SACK packet is sent to the sender. If there is no number discontinuity, a SACK is generated and sent to the sender within the preset time. The lost packet number is empty in the SACK packet.
  • each of the independent signaling data packets is followed by a plurality of verification data packets, the transmission density of the data packets is increased, the interval at which the receiving end receives the data packets is reduced, and an independent signaling data is included.
  • the receiving end After the packet is sent, whenever the receiving end receives a data packet (including the authentication data packet or the subsequent independent signaling data packet), the receiving end will detect the serial number of all the previously received data packets, if received. If the terminal does not receive the independent signaling data packet, the receiving end will trigger a SACK message after receiving each data packet. So for some signaling packets are scattered In this case, the SACK message can be triggered relatively quickly without relying on subsequent signaling packets.
  • S24 The receiving end sends the generated SACK packet to the sending end.
  • the SACK packet is sent to the sender to notify the sender whether the packet sent by the sender has a problem of loss or disorder.
  • the sending end receives the SACK packet sent by the receiving end, and determines whether the number of received SACK packets containing the same missing signaling data packet reaches a preset value.
  • a preset value of the number of SACK packets is set in the sending end. That is, when the number of SACK packets received by the sending end is less than the preset value, the packet is considered to be missing. Or out of order, and if the number of received SACK packets reaches a preset value, it is determined that the signaling packet corresponding to the number of the signaling packet carried in the SACK packet is lost or out of order. In addition, the number of SACK packets mentioned here reaches a preset value, which means that the number of SACK packets containing the number of the same lost signaling packet reaches a preset value.
  • the transmission of the authentication data packet may fail due to the uncertainty of the network transmission
  • the transmitting end in order to ensure that the transmitting end can receive at least the SACK message reaching the preset value when the signaling data packet is lost, in the embodiment of the invention
  • the number of verification packets must be greater than or equal to the preset value.
  • the preset value can be three, and the number of verification packets is at least three.
  • S26 The sender determines that the signaling packet is lost.
  • the signaling data packet corresponding to the number of the lost signaling data packet in the multiple SACK messages is determined to be lost.
  • S27 The sending end sends the determined lost signaling data packet to the receiving end.
  • the transmitting end adds multiple verification data packets after the independent signaling data packet, and numbers the independent signaling data packet and the multiple verification data packets, and After the numbering, the independent signaling data packet and the plurality of verification data packets are sequentially numbered to the receiving end.
  • Sending when the sender receives the number of SACK packets with the same lost signaling packet sent by the receiving end and reaches the preset value, the sender and the number of the same signaling packet are lost in the multiple SACK packets. The corresponding signaling data packet is lost, and the signaling data packet is retransmitted, so that the lost signaling data packet can be effectively retransmitted in time.
  • the method adds multiple verification data packets after the independent signaling data packet, so that the transmission density of the data packet is increased, and the transmission interval is reduced.
  • the signaling data packet is fragmented, it is not necessary to rely on the subsequent signaling data packet, and the SACK message can be triggered relatively quickly. Therefore, it can be applied to a discrete isolated signaling interaction process based on the SCTP bearer, and the method can automatically trigger the fast retransmission of the SCTP bearer signaling by using the SCTP existing mechanism in the case of poor transmission quality, thereby effectively reducing the letter.
  • the timeout retransmission wait time is reduced, the service establishment delay is reduced, and the service establishment success rate is improved.
  • the present invention further provides an SCTP-based signaling retransmission apparatus.
  • the signaling retransmission apparatus 100 includes: a numbering unit 1, a sending unit 2, and a A receiving unit 3, a first determining unit 4, a determining unit 5 and a retransmission unit 6, in the signaling transmission system of the SCTP, the signaling retransmission device acts as a transmitting end.
  • the numbering unit 1 is configured to add multiple verification data packets after the independent signaling data packet, and number the independent signaling data packet and the multiple verification data packets.
  • the sending unit 2 is configured to send the independent signaling data packet and the plurality of verification data packets after the numbering to the receiving end according to the number.
  • the first receiving unit 3 is configured to receive a SACK message sent by the receiving end, where the SACK message carries the number of the lost signaling data packet.
  • the first determining unit 4 is configured to determine whether the number of received SACK packets containing the same lost signaling data packet reaches a preset value.
  • the preset value may be selected as three, and the number of the plurality of verification data packets is at least three.
  • the determining unit 5 is configured to determine, when the determination result of the first determining unit 4 is YES, the signaling packet loss corresponding to the number of the missing signaling packets in the plurality of SACK messages.
  • the retransmission unit 6 is configured to send the determined lost signaling data packet to the receiving end.
  • the embodiment of the present invention further provides an SCTP-based signaling transmission system.
  • the system includes: a signaling retransmission device 100 and a signaling receiving device 200.
  • the signaling retransmission device is used as a transmitting end.
  • FIG. 2 it is a schematic structural diagram of the signaling retransmission device 100.
  • the signaling retransmission device 100 includes a numbering unit 1 and a sending unit. 2.
  • the numbering unit 1 is configured to add multiple verification data packets after the independent signaling data packet, and number the independent signaling data packet and the multiple verification data packets.
  • the sending unit 2 is configured to sequentially send the independent signaling data packet and the plurality of verification data packets after the numbering to the signaling receiving device 200 according to the number.
  • the first receiving unit 3 is configured to receive the SACK message sent by the signaling receiving device 200, where the SACK message carries the number of the lost signaling data packet.
  • the first determining unit 4 is configured to determine the received number that contains the same lost signaling data packet.
  • the preset value may be selected as three, and the number of the plurality of verification data packets is at least three.
  • the determining unit 5 is configured to determine, when the determination result of the first determining unit 4 is YES, the signaling packet loss corresponding to the number of the lost signaling data packets in the multiple SACK messages.
  • the retransmission unit 6 is configured to transmit the determined lost signaling data packet to the signaling receiving device 200.
  • the signaling receiving device serves as a receiving end.
  • the signaling receiving device includes: a second receiving unit 7, a second determining unit 8, and a SACK message generating unit 9.
  • the second receiving unit 7 is configured to receive the independent signaling data packet and the multiple verification data packets sent by the signaling retransmission device 100;
  • the second determining unit 8 is configured to: after each receiving the data packet, determine whether the number of the received independent signaling data packet and the multiple verification data packets are consecutive;
  • the SACK message generating unit 9 is configured to generate a SACK message and send the SACK message to the signaling retransmission device 100, where the SACK message carries a lost message, if the result of the second determining unit 8 is no. Let the number of the packet.
  • the disclosed system, apparatus, and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed.
  • the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.
  • the units described as separate components may or may not be physically separate, and the components displayed as the units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the technical solution of the present invention may contribute to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium.
  • a number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a USB flash drive, a removable hard disk, a read-only memory (ROM, Read-Only Memory), A device that can store program code, such as a random access memory (RAM), a disk or an optical disk.

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

Abstract

L'invention concerne un procédé et un dispositif de retransmission de signalisation sur la base d'un protocole de transmission des commandes de flux (SCTP), le procédé comprenant les étapes consistant à : numéroter un paquet de données de signalisation indépendant et une pluralité de paquets de données de vérification, et transmettre le paquet de données de signalisation indépendant et la pluralité de paquets de données de vérification ainsi numérotés à une extrémité réception en fonction de la numérotation ; recevoir des messages SACK transmis par l'extrémité réception, et déterminer si le nombre de messages SACK reçus atteint ou non une valeur prédéfinie ; si le nombre de messages SACK reçus atteint la valeur prédéfinie, considérer que les paquets de données de signalisation correspondant au même nombre de paquets de données de signalisation perdus dans la pluralité de messages SACK sont perdus ; et retransmettre à l'extrémité réception les paquets de données de signalisation considérés comme perdus. Conformément au procédé selon l'invention, la pluralité de paquets de données de vérification permet de déterminer si le paquet de données de signalisation a été perdu. Les paquets de données de signalisation perdus peuvent alors être retransmis de manière efficace et rapide.
PCT/CN2011/077740 2011-07-28 2011-07-28 Procédé, dispositif et système de retransmission de signalisation sur la base d'un protocole de transmission des commandes de flux WO2012109848A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201180001350.4A CN102308512B (zh) 2011-07-28 2011-07-28 一种基于流控制传输协议的信令重传方法、装置及系统
PCT/CN2011/077740 WO2012109848A1 (fr) 2011-07-28 2011-07-28 Procédé, dispositif et système de retransmission de signalisation sur la base d'un protocole de transmission des commandes de flux

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PCT/CN2011/077740 WO2012109848A1 (fr) 2011-07-28 2011-07-28 Procédé, dispositif et système de retransmission de signalisation sur la base d'un protocole de transmission des commandes de flux

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