WO2011157190A2 - Procédé et appareil de traitement de réception de données - Google Patents

Procédé et appareil de traitement de réception de données Download PDF

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Publication number
WO2011157190A2
WO2011157190A2 PCT/CN2011/075399 CN2011075399W WO2011157190A2 WO 2011157190 A2 WO2011157190 A2 WO 2011157190A2 CN 2011075399 W CN2011075399 W CN 2011075399W WO 2011157190 A2 WO2011157190 A2 WO 2011157190A2
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WO
WIPO (PCT)
Prior art keywords
data packet
layer
data
pdcp
serial number
Prior art date
Application number
PCT/CN2011/075399
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English (en)
Chinese (zh)
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WO2011157190A3 (fr
Inventor
陈取才
练海春
闫坤
吕春
Original Assignee
华为技术有限公司
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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 PCT/CN2011/075399 priority Critical patent/WO2011157190A2/fr
Priority to CN2011800018264A priority patent/CN102714577A/zh
Publication of WO2011157190A2 publication Critical patent/WO2011157190A2/fr
Publication of WO2011157190A3 publication Critical patent/WO2011157190A3/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
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1835—Buffer management
    • H04L1/1841—Resequencing
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Definitions

  • the embodiments of the present invention relate to the field of communications, and in particular, to a data receiving and processing method and apparatus. Background technique
  • UE User Equipment
  • UMTS Universal Mobile Telecommunications System
  • GSM Global System for Mobile Communications
  • LTE Long Term Evolution
  • the UMTS and LTE radio access technologies serve the same UE at the same time, and can perform data transmission and reception on the UMTS link and the LTE link at the same time.
  • the data transmission delay between the UMTS link and the LTE link is inconsistent.
  • the data packets received by the receiver are out of order, which triggers a fast retransmission mechanism of the Transmission Control Protocol (TCP) layer, which greatly reduces the transmission rate of the application layer.
  • TCP Transmission Control Protocol
  • Embodiments of the present invention provide a data receiving processing method and apparatus to improve service performance.
  • a data receiving processing method including:
  • a data receiving device including:
  • a receiving module configured to receive a data packet sent by the data sending end device on a link of at least two radio access technologies, where the data packet includes a serial number;
  • An obtaining module configured to acquire a serial number in the data packet
  • a sorting processing module configured to sort the data packet according to the serial number.
  • the data receiving end may sort the data packet according to the sequence number included in each data packet, thereby The fast retransmission mechanism is not triggered by receiving out-of-order packets, which improves the throughput of the application layer, improves the utilization of radio resources, and improves service performance.
  • FIG. 1 is a flowchart of an embodiment of a data receiving processing method according to the present invention.
  • FIG. 2 is a schematic structural diagram of a network protocol stack architecture applied to a data receiving processing method according to an embodiment of the present invention
  • FIG. 3 is a schematic flowchart of a data receiving processing method of the second method
  • FIG. 4 is another schematic structural diagram of a network protocol stack to which a data receiving processing method according to an embodiment of the present invention is applied;
  • FIG. 5 is a schematic structural diagram of another network protocol stack applied by the data receiving processing method according to an embodiment of the present invention.
  • Embodiment 1 of a data receiving end device according to the present invention
  • FIG. 7 is a schematic structural diagram of Embodiment 2 of a data receiving end device according to the present invention.
  • FIG. 1 is a flowchart of an embodiment of a data receiving processing method according to the present invention. As shown in FIG. 1, the method in this embodiment may include:
  • Step 101 Receive a data packet sent by the data sending end on a link of at least two radio access technologies, where the data packet includes a sequence number.
  • the data receiving end can receive the data packet sent by the data transmitting end on the link of at least two radio access technologies.
  • the links of at least two radio access technologies may be any combination of radio links such as UMTS, LTE, and GSM.
  • a person skilled in the art can set a combination of multiple links for providing access services to the UE according to the requirements of the network architecture, which is not described in this embodiment. This embodiment is described by taking the example of transmitting and receiving data on the links of the two UMTS and LTE radio access technologies.
  • the data receiving end in the embodiment may be a UE, and the data sending end may be a network side device, such as a base station or a radio network controller; or the data receiving end may be a network side device, and the data sending end device may be UE.
  • the data receiving end is the UE and the data sending end is the network side device.
  • the network side device can distribute the data packet from the links of the UMTS and LTE wireless access technologies, and the UE may use the UMTS and the LTE.
  • the data packets received on the links of the two radio access technologies are aggregated.
  • the case where the data receiving end is a network side device and the data transmitting end is a UE is similar, and details are not described herein again.
  • the data packet in this embodiment includes a sequence number, which may be the serial number of the TCP layer, or the serial number of the Packet Data Convergence Protocol (PDCP) layer, or may be the data.
  • the other identifiers newly added in the package for representing the order, this embodiment need not limit the specific form of the serial number.
  • Step 102 Obtain a serial number in the data packet.
  • the data receiving end can obtain the serial number from the data packet, so that the serial number is used for sorting the data packet.
  • Step 103 Perform sorting processing on the data packet according to the serial number.
  • the data receiving end may sort the data packet according to the sequence number included in each data packet, and never The fast retransmission mechanism is triggered by receiving out-of-order packets, which improves the throughput of the application layer, improves the utilization of radio resources, and improves service performance.
  • step 102 may adopt a serial number of a TCP layer, a sequence number of a split and combination function (SCF) layer, or a packet data convergence protocol ( Packet Data
  • the serial number implementation of the Convergence Protocol (PDCP) layer may be specifically: sorting the data packet according to the serial number of the TCP layer, the serial number of the SCF layer, or the serial number of the PDCP layer.
  • PDCP Convergence Protocol
  • the embodiment of the data receiving processing method of the present invention shown in FIG. 1 may adopt different specific implementation manners.
  • FIG. 2 is a schematic structural diagram of a network protocol stack applied to a data receiving processing method according to an embodiment of the present invention.
  • the UMTS and LTE wireless access technologies are simultaneously used by the same UE as an example. That is, data is simultaneously transmitted and received on the links of the two UMTS and LTE radio access technologies.
  • the network side device adopting the UMTS access technology may include a physical layer entity PHY1, a media access control (MAC) layer entity MAC1, a radio link control (RLC) layer entity RLC1, and a PDCP layer.
  • the entity PDCP1; correspondingly, the UE side may include a corresponding physical layer entity, a medium access control layer entity MAC1 ', a radio link control layer entity RLC1', and a packet data convergence protocol layer entity.
  • the network side device adopting the LTE access technology may include a physical layer entity PHY2, a medium access control layer entity MAC2, a radio link control layer entity RLC2, and a packet data convergence.
  • the protocol layer entity PDCP2; correspondingly, the UE side may include a corresponding physical layer entity PHY2', a medium access control layer entity MAC2', a radio link control layer entity RLC2', and a packet data convergence protocol layer entity PDCP2.
  • the PDCP1 entity and the PDCP2 entity further include a Split and Combination Function (SCF) layer entity SCF, which can be used to send data to the UE when the network side sends Data is distributed from the UMTS link and the LTE link.
  • SCF Split and Combination Function
  • the SCF entity can aggregate data from the UMTS link and the LTE link.
  • the SCF entity may be located on the UMTS network side device, or may be located on the LTE network side device, or may be located on the UMTS network side device and the LTE network side device, which is not limited by the present invention.
  • the SCF distribution aggregation layer entity
  • the SCF can be used to transmit data from the UMTS link and the LTE link when the UE sends data to the network side.
  • the SCF can aggregate data from the UMTS link and the LTE link.
  • the above description is based on the UMTS and LTE two radio access technologies simultaneously serving the same UE, for example, the GSM and WCDMA radio access technologies simultaneously serve the same UE, or two or more radio access technologies simultaneously serve the same UE. I will not repeat them here.
  • Method 1 Use the serial number of the TCP layer to perform sorting processing on the data packet.
  • the data packet transmitted by the network can include the serial number of the TCP layer
  • the data packet can be sorted according to the serial number of the TCP layer.
  • the UE is the data receiving end.
  • the SCF of the UE side can receive the TCP data packet sent by the network side from the LTE link and the UMTS link, and can obtain the TCP data packet from the packet header of the TCP data packet.
  • the serial number of the TCP layer and based on the serial number of the TCP layer
  • the TCP packets are sorted so that the TCP packets can be delivered to the upper layer in order.
  • Manner 2 The IP data packet can be modified at the data transmitting end, and the serial number of the SCF layer is added to the IP data packet, and the data receiving end can perform the sorting processing of the IP data packet according to the serial number of the SCF layer in the data packet.
  • FIG. 3 is a schematic flowchart of a data receiving processing method of the second method.
  • the IP data packet sent from the application layer of the network side includes an IP packet length and an IP.
  • the checksum and the TCP checksum are sent to the SCF layer on the network side.
  • the SCF entity on the network side can add the sequence number (SN) of the SCF layer to the IP packet.
  • the SCF entity on the network side needs to modify the IP packet length of the IP data packet.
  • the falsified IP packet length is the original IP packet length +2, recalculate the IP insurance risk and the TCP checksum, and generate the modification. After the IP checksum and TCP checksum.
  • the SCF entity on the network side can send the modified IP data packet to the PDCP layer on the network side, and the PDCP layer entity on the network side, for example, the PDCP1 entity or the PDCP2 entity, can compress the data packet to generate PDCP compression.
  • the data packet that is, the PDCP compressed packet, is delivered to the next layer for transmission to the UE side.
  • the PDCP layer entity of the UE side for example, the PDCP1 'entity or PDCP2' entity can decompress the received PDCP compressed packet and decompress the IP data packet.
  • the SCF sent to the UE side, the entity, and the SCF on the UE side the entity can obtain the SCF layer sequence number SN from the IP data packet, and restore the IP packet length, IP checksum, and TCP check of the original IP data packet. And deleting the SN, thereby restoring the original IP data packet. Then, the SCF' entity on the UE side can sort the data packets according to the obtained SCF layer sequence number SN in each IP data packet, and deliver it to the upper layer in order.
  • the data transmitting end may use the serial number assigned by the SCF layer to replace the PDPC layer serial number allocated by the PDCP layer in the PDCP compressed packet, and the data receiving end may solve the solution according to the serial number assigned by the SCF layer obtained from the PDCP compressed packet.
  • the IP packets obtained after compression are sorted.
  • each PDCP compressed package includes a PDCP layer entity.
  • the network side is the data transmitting end.
  • the SCF entity on the network side distributes the data packet, and uniformly allocates the serial number of the SCF layer for the data packet.
  • the PDCP layer entity of the network side that is, the PDCP1 entity and the PDCP2 entity, generates a PDCP compressed packet
  • the generated PDCP compressed packet includes the serial number of the SCF layer uniformly numbered by the SCF layer entity on the network side, instead of the original PDCP1 entity and
  • the serial number of the PDCP layer is independently numbered by the PDCP2 entity; that is, the serial number of the PDCP layer in the PDCP compressed packet is uniformly numbered by the SCF layer entity.
  • the PDCP layer entity on the UE side When the data packet is sent to the UE side through the air interface, the PDCP layer entity on the UE side, that is, the PDCP entity and the PDCP2' entity, respectively decompress the received PDCP compressed packet, and obtain the IP data packet and the unified numbered SCF layer sequence. And transmitting the IP data packet and the uniformly numbered SCF layer sequence number to the SCF' entity on the UE side.
  • the SCF' entity on the UE side can sort the IP data packets according to the sequence number of the SCF layer, and deliver them to the upper layer in order.
  • FIG. 4 is another schematic structural diagram of a network protocol stack applied by the data receiving processing method according to an embodiment of the present invention. The difference from the protocol stack shown in FIG. 2 is that the SCF layer is located below the PDCP layer.
  • Method 4 Taking the network side as the data transmitting end
  • the serial number of the SCF layer and the PDCP compressed packet are used to control the service data unit through the radio link ( RLC Service Data Unit, RLC SDU) is sent to the RLC layer entity on the network side, for example, the RLC1 entity or the RLC2 entity on the network side.
  • RLC SDU RLC Service Data Unit
  • the SCF on the terminal side can obtain the sequence number of the SCF layer and the PDCP compressed packet from the received RLC SDU, and according to the sequence of the SCF layer.
  • the number is sorted and delivered in order to the PDCP layer entity on the UE side, for example, PDCP 1, or PDCP2' entity.
  • the PDCP1 'or PDCP2' entity decompresses the PDCP compression packet to obtain an IP packet.
  • the difference between the fourth mode and the second mode is that the serial number of the SCF layer in the second mode is directly added.
  • PDCP compression is performed, and in the fourth mode, the IP data packet is first PDCP-compressed, and then the serial number of the SCF layer and the PDCP compressed packet are placed together in the RLC SDU. Sent in.
  • FIG. 5 is a schematic structural diagram of another network protocol stack applied by the data receiving processing method according to an embodiment of the present invention.
  • the difference between the protocol stack architecture and the protocol stack architecture shown in FIG. 2 is that the SCF layer entity is The PDCP layer entity is located in the lower layer of the PDCP layer entity, and the UMTS link and the LTE link share a PDCP layer entity, and the PDCP layer entity is located in the UMTS network side device. It can be understood that the PDCP layer entity may also be located in the LTE network side device.
  • the invention is not limited thereto.
  • the UMTS link shares a PDCP layer entity with the LTE link.
  • each PDCP compressed packet sent includes the serial number of the PDCP layer allocated by the shared PDCP layer entity, and the data receiving end After decompressing the received PDCP compression package, the IP data packet can be sorted by using the obtained serial number of the PDCP layer.
  • the fifth mode it can be applied to the network architecture shown in FIG. 5.
  • the UE is still used as the data receiving end as an example for detailed description.
  • the UMTS link and the LTE link share one PDCP layer entity. Therefore, for the data sending end, the PDCP layer entity can uniformly allocate the serial number of the PDCP layer to the IP data packet sent by the upper layer, and the IP data packet is allocated to the IP data packet.
  • a compression process is performed to obtain a PDCP compressed packet containing the serial number of the uniformly allocated PDCP layer.
  • the SCF on the UE side can aggregate the data from the UMTS link and the LTE link, and deliver the PDCP compressed packet to the PDCP layer entity on the UE side.
  • the PDCP layer entity on the UE side can decompress the PDCP compressed packet, obtain the IP data packet, and obtain the serial number of the PDCP layer that is uniformly allocated. Then, the PDCP layer entity on the UE side can perform the PDCP layer serial number according to the serial number of the PDCP layer.
  • the sorting process sends the IP data packet to the upper layer in order.
  • FIG. 6 is a schematic structural diagram of Embodiment 1 of a data receiving end device according to the present invention, as shown in FIG.
  • the device of this embodiment may include: a receiving module 11, an obtaining module 12, and a sorting processing module 13, where the receiving module 11 is configured to receive a data packet sent by the data sending end device on a link of at least two radio access technologies.
  • the data packet includes a sequence number; the obtaining module 12 is configured to obtain a sequence number in the data packet; and the sorting processing module 13 is configured to perform sorting processing on the data packet according to the sequence number.
  • the device in this embodiment may be a device on the UE side or a device on the network side.
  • the method in the embodiment of the method shown in FIG. 1 may be implemented to achieve the corresponding technical effects, and details are not described herein.
  • FIG. 7 is a schematic structural diagram of Embodiment 2 of the data receiving device of the present invention.
  • the device in this embodiment is based on the device shown in FIG. 6 , and may further include: the sort processing module 13 may specifically include The first sorting unit 131, the second sorting unit 132, and the third sorting unit 133, wherein the first sorting unit 131 is configured to sort the data packet according to the serial number of the TCP layer; The data packet is sorted according to the sequence number of the SCF layer; the third sorting unit 133 is configured to perform sort processing on the data packet according to the serial number of the PDCP layer.
  • the above three sorting units may also adopt only one or two sorting units.
  • the acquiring module may be further configured to: perform PDCP solution on the received data packet at the PDCP layer. Compressing; at the SCF layer, obtaining the sequence number of the SCF layer in the PDCP decompressed data packet. The sequence number of the SCF layer may be used to replace the PDCP layer sequence number included in the PDCP compressed data packet.
  • the acquiring module may be further used to:
  • the sequence number of the SCF layer is obtained from the received radio link control service data unit.
  • the structure of the data receiving end device shown in FIG. 7 is set in the data receiving end of the present invention.
  • the obtaining module may be further configured to:
  • the received data packet is subjected to PDCP decompression, and the PDCP layer serial number uniformly allocated by the link of the at least two radio access technologies is obtained.
  • the three sorting units of this embodiment are respectively used to implement the technical solutions of the foregoing manners 1 to 5.
  • the implementation principle is similar, and details are not described herein again.
  • the specific process of implementing the data receiving processing method by using the data receiving end device of the embodiment of the present invention is similar to the foregoing method embodiment, and is not described herein again.

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

Abstract

Les modes de réalisation de la présente invention concernent un procédé et un appareil de traitement de réception de données. Le procédé de traitement de réception de données consiste à recevoir des paquets de données transmis par l'extrémité de transmission de données dans une liaison au moyen d'au moins deux technologies d'accès radio, lesquels paquets de données comprennent des numéros de séquence (101), à obtenir les numéros de séquence dans les paquets de données (102), puis à effectuer un traitement de séquençage sur les paquets de données en fonction des numéros de séquence (103). Selon les modes de réalisation de l'invention, après réception des paquets de données transmis par l'extrémité de transmission de données dans une liaison au moyen d'au moins deux technologies d'accès radio, l'extrémité de réception de données peut effectuer un traitement de séquençage sur les paquets de données en fonction des numéros de séquence compris dans chaque paquet de données, de manière à ne pas déclencher un mécanisme de retransmission rapide causé par les paquets de données reçus dans le désordre, et le débit de la couche application, le taux d'utilisation des ressources radio et les performances de service sont améliorés.
PCT/CN2011/075399 2011-06-07 2011-06-07 Procédé et appareil de traitement de réception de données WO2011157190A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2011/075399 WO2011157190A2 (fr) 2011-06-07 2011-06-07 Procédé et appareil de traitement de réception de données
CN2011800018264A CN102714577A (zh) 2011-06-07 2011-06-07 数据接收处理方法及装置

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PCT/CN2011/075399 WO2011157190A2 (fr) 2011-06-07 2011-06-07 Procédé et appareil de traitement de réception de données

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CN104714900A (zh) * 2015-03-26 2015-06-17 百度在线网络技术（北京）有限公司 数据读取方法和装置
CN111163019A (zh) * 2018-11-07 2020-05-15 中兴通讯股份有限公司 处理数据包的方法、装置和存储介质

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CN109392016B (zh) * 2017-08-11 2022-06-28 中国电信股份有限公司 数据发送/接收方法和装置、数据传输系统
WO2019028818A1 (fr) * 2017-08-11 2019-02-14 Oppo广东移动通信有限公司 Procédé et dispositif de transmission de données
CN108632171B (zh) * 2017-09-07 2020-03-31 视联动力信息技术股份有限公司 一种基于视联网的数据处理方法和装置
CN111385069A (zh) * 2018-12-27 2020-07-07 广州市百果园信息技术有限公司 数据传输方法及计算机设备
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KR101000699B1 (ko) * 2004-04-19 2010-12-10 엘지전자 주식회사 무선링크 제어계층에서의 데이터 처리방법
CN101162968A (zh) * 2006-12-08 2008-04-16 中兴通讯股份有限公司 前向通用路由封装包的乱序调整方法
CN101436984B (zh) * 2007-11-13 2012-09-05 华为技术有限公司 数据传输方法及设备
CN102025601B (zh) * 2009-09-17 2014-12-10 中兴通讯股份有限公司 一种数据封装方法及系统

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CN104714900A (zh) * 2015-03-26 2015-06-17 百度在线网络技术（北京）有限公司 数据读取方法和装置
CN104714900B (zh) * 2015-03-26 2019-07-05 百度在线网络技术（北京）有限公司 数据读取方法和装置
CN111163019A (zh) * 2018-11-07 2020-05-15 中兴通讯股份有限公司 处理数据包的方法、装置和存储介质
EP3879908A4 (fr) * 2018-11-07 2022-07-27 ZTE Corporation Procédé et appareil permettant de traiter des paquets de données, dispositif et support d'informations
CN111163019B (zh) * 2018-11-07 2022-10-28 中兴通讯股份有限公司 处理数据包的方法、装置和存储介质
US11985071B2 (en) 2018-11-07 2024-05-14 Zte Corporation Method and apparatus for processing data packets, device, and storage medium

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