WO2018077195A1 - Procédé et appareil de retransmission de données, et dispositif mac - Google Patents

Procédé et appareil de retransmission de données, et dispositif mac Download PDF

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Publication number
WO2018077195A1
WO2018077195A1 PCT/CN2017/107678 CN2017107678W WO2018077195A1 WO 2018077195 A1 WO2018077195 A1 WO 2018077195A1 CN 2017107678 W CN2017107678 W CN 2017107678W WO 2018077195 A1 WO2018077195 A1 WO 2018077195A1
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WO
WIPO (PCT)
Prior art keywords
mac sdu
mac
sdu
retransmission
data
Prior art date
Application number
PCT/CN2017/107678
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English (en)
Chinese (zh)
Inventor
陈艳丽
黄河
潘凤艳
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中兴通讯股份有限公司
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Publication of WO2018077195A1 publication Critical patent/WO2018077195A1/fr

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    • 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
    • H04W28/0231—Traffic management, e.g. flow control or congestion control based on communication conditions
    • H04W28/0236—Traffic management, e.g. flow control or congestion control based on communication conditions radio quality, e.g. interference, losses or delay
    • 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
    • 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
    • H04L1/188—Time-out mechanisms
    • 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
    • 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
    • H04W28/0268—Traffic management, e.g. flow control or congestion control using specific QoS parameters for wireless networks, e.g. QoS class identifier [QCI] or guaranteed bit rate [GBR]
    • 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
    • H04W28/04—Error control
    • 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

Definitions

  • the present invention relates to the field of communications, and in particular to a data retransmission method and apparatus, and a MAC device.
  • the mobile communication network is facing an expansive growth of terminal data traffic.
  • the construction of 5G networks needs to achieve ultra-high speed, high throughput, ultra-high reliability, ultra-low latency and other indicators to provide users with the best experience. These requirements make The service capabilities and deployment strategies of mobile networks are facing tremendous pressures and challenges.
  • operators need to enhance existing network deployment and communication technologies.
  • they hope to accelerate the promotion of new technologies and network expansion, so as to rapidly improve the network. The purpose of performance.
  • RLC ARQ Radio Link Control Automatic Repeat request
  • MAC HARQ Media Access Control Hybrid Automatic Repeat request
  • the MAC receiver receives the data and determines the correctness of the data and then performs data feedback HARQ ACK/NACK; the MAC sender completes the retransmission of the MAC data and the transmission of the new data according to the HARQ ACK/NACK; in the RLC ARQ mechanism, The RLC receiver detects the integrity of the received data from the underlying data, and notifies the RLC ARQ ACK/NACK when data loss or data abnormality is detected; the RLC sender completes the retransmission of the RLC data according to the data feedback.
  • RLC ARQ Radio Link Control Automatic Repeat request
  • MAC HARQ Media Access Control Hybrid Automatic Repeat request
  • FIG. 1 is a flowchart of the two-layer retransmission mechanism in the related art.
  • the protocol function hierarchy is clear.
  • the high-level retransmission timing is slightly "slow". Because of the sequential requirements of high-level application data, the two-layer retransmission mechanism may delay the delivery of service data to the application layer in time, affecting the problem of service QoS.
  • the embodiment of the invention provides a data retransmission method and device, and a MAC device, to at least solve the problem that the two-layer retransmission mechanism in the related art may delay the delivery of service data to the application layer in time and affect the service QoS.
  • a data retransmission method including: detecting, when a media access control service data unit MAC SDU retransmission fails, detecting whether a failure waiting time of the MAC SDU is timed out; If the result is no, the related data of the MAC SDU and/or the MAC SDU is retransmitted.
  • a data retransmission apparatus including: a detecting module, configured to detect whether a failure waiting time of the MAC SDU expires when the MAC SDU fails to retransmit; The module is configured to resend the related data of the MAC SDU and/or the MAC SDU if the determination result is no.
  • a MAC device including: a processor, configured to detect, when the MAC SDU retransmission fails, whether a failure waiting time of the MAC SDU is timed out; In the case of no, the MAC SDU and/or the related data of the MAC SDU are retransmitted; the transmission interface is configured to transmit related data of the MAC SDU and/or the MAC SDU.
  • a storage medium is also provided.
  • the storage medium is arranged to store program code for performing the following steps:
  • the related data using the MAC SDU and/or the MAC SDU is retransmitted again within the waiting time after the retransmission fails. Therefore, it can be solved in related technologies
  • the two-layer retransmission mechanism may delay the delivery of service data to the application layer in time, affecting the problem of service QoS, thereby accelerating the delivery of data to the application layer and improving the effect of service QoS.
  • FIG. 2 is a block diagram showing the hardware structure of a mobile terminal according to a data retransmission method according to an embodiment of the present invention
  • FIG. 3 is a flowchart of a data retransmission method according to an embodiment of the present invention.
  • FIG. 4 is a timing diagram of a data retransmission in accordance with the present invention.
  • FIG. 5 is a timing diagram of another data retransmission in accordance with the present invention.
  • FIG. 6 is a structural diagram of a data retransmission apparatus according to an embodiment of the present invention.
  • FIG. 7 is a structural diagram of another data retransmission apparatus according to an embodiment of the present invention.
  • FIG. 8 is a structural diagram of a MAC device according to an embodiment of the present invention.
  • FIG. 2 is a hardware structural block diagram of a mobile terminal of a data retransmission method according to an embodiment of the present invention.
  • the mobile terminal 20 may include one or more (only one shown) processor 202 (the processor 202 may include This includes, but is not limited to, a processing device such as a microprocessor MCU or a programmable logic device FPGA, a memory 204 configured to store data, and a transmission device 206 configured as a communication function.
  • a processing device such as a microprocessor MCU or a programmable logic device FPGA
  • memory 204 configured to store data
  • a transmission device 206 configured as a communication function.
  • terminal 20 may also include more or fewer components than those shown in FIG. 2, or have a different configuration than that shown in FIG. 2.
  • the memory 204 can be configured as a software program and a module for storing application software, such as program instructions/modules corresponding to the data retransmission method in the embodiment of the present invention, and the processor 202 executes by executing a software program and a module stored in the memory 204.
  • application software such as program instructions/modules corresponding to the data retransmission method in the embodiment of the present invention
  • the processor 202 executes by executing a software program and a module stored in the memory 204.
  • Various functional applications and data processing, that is, the above methods are implemented.
  • Memory 204 can include high speed random access memory and can also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid state memory.
  • memory 204 can further include memory remotely located relative to processor 202, which can be connected to terminal 20 over a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.
  • Transmission device 206 is arranged to receive or transmit data via a network.
  • the above specific network example may include a wireless network provided by a communication provider of the terminal 10.
  • transmission device 206 includes a Network Interface Controller (NIC) that can be connected to other network devices through a base station to communicate with the Internet.
  • NIC Network Interface Controller
  • the transmission device 206 can be a Radio Frequency (RF) module for communicating with the Internet wirelessly.
  • RF Radio Frequency
  • FIG. 3 is a flowchart of a data retransmission method according to an embodiment of the present invention. As shown in FIG. 3, the process includes the following steps. :
  • Step S302 detecting, when the media access control service data unit MAC SDU retransmission fails, detecting whether the failure waiting time of the MAC SDU expires;
  • Step S304 if the determination result is no, retransmit the related data of the MAC SDU and/or the MAC SDU.
  • the related data of the MAC SDU refers to the MAC attributed to the MAC SDU. SDU fragment.
  • the related data of the retransmitted MAC SDU and the MAC SDU is sent with a higher priority than the MAC SDU that has not been sent in the MAC PDU.
  • the retransmission of the related data of the MAC SDU and the MAC SDU may also be sent in one pass with the MAC SDU that has not been sent in the MAC PDU.
  • the complete MAC SDU may be directly retransmitted, and the completed MAC SDU may be split into multiple MAC SDU segments for retransmission.
  • the segment can be directly retransmitted, and the complete MAC SDU corresponding to the MAC SDU segment can also be retransmitted.
  • the MAC SDU and the failure waiting time set for the MAC SDU When the SDU retransmission is successful, the MAC SDU to which the MAC SDU fragment belongs and the failure waiting time of the MAC SDU are deleted; if the MAC SDU fragment fails to be retransmitted and the determination result is yes, the MAC SDU to which the MAC SDU fragment belongs In the case that all SDU segments complete retransmission, the MAC SDU to which the MAC SDU segment belongs and the MAC SDU to which the MAC SDU segment belongs are deleted.
  • the MAC SDU retransmission to which the MAC SDU segment belongs is that all the MAC SDU segments included in the MAC SDU to which the MAC SDU segment belongs are retransmitted, that is, the meaning of the retransmission success is All MAC SDU fragments are retransmitted successfully. If one or more MAC SDUs have retransmission failures, then the retransmission fails.
  • step S201 receiving the MAC SDU sent by each logical channel, and setting the failure waiting time for the MAC SDU; encapsulating the MAC SDU, obtaining a MAC protocol data unit PDU, and sending MAC PDU.
  • a MAC Control element and Padding are also encapsulated in the MAC PDU.
  • FIG. 4 is a timing diagram of data retransmission according to the present invention. As shown in FIG. 4, the following steps in scenario 1 are applied to the above. Timing diagram.
  • S0020 MAC sets DiscardTimer for SDU0 and SDU1 respectively;
  • the S0030 MAC obtains the next MAC TTI (recorded as TTI1) of the UE according to the air interface allocation capability, and allows the data traffic to be sent;
  • TTI1 sends MAC SDU0 to form MAC PDU0; then TTI1 sends;
  • the S0060 MAC obtains the next MAC TTI (recorded as TTI2) of the UE according to the air interface allocation capability, and allows the data traffic to be sent;
  • the S0070 MAC checks that the DiscardTimer of the MAC SDU0 in the MAC PDU0 has not expired, allowing fast HARQ;
  • the S0080 MAC determines that the TTI2 sends the MAC SDU0 and the MAC SDU1 to form the MAC PDU1, and the framing is as shown in FIG. 4, and then the TTI2 sends;
  • the S0100 MAC deletes the MAC SDU0 and the MAC SDU1 and the corresponding DiscardTimer.
  • FIG. 5 is a timing diagram of another data retransmission according to the present invention. As shown in FIG. 5, the following steps are applied in scenario 2c. In the above timing chart.
  • S0010 MAC receives high layer data in sequence: MAC SDU0 and MAC SDU1 from logical channel 5, MAC SDU2 from logical channel 6;
  • the S0020 MAC After receiving the SDUs, the S0020 MAC starts the DiscardTimer respectively.
  • the S0030 MAC obtains, according to the air interface allocation capability, the data traffic of the next MAC TTI (referred to as TTI1) of the UE to allow the logical channel 5 to be sent;
  • the S0040 MAC determines that the TSI1 sends the MAC SDU0 of the logical channel 5 and the segment of the MAC SDU1 to form the MAC PDU0.
  • MAC PDU0 is framed as shown in Figure 6, and then sent by TTI1;
  • the S0060 MAC obtains the data traffic of the logical channel 5 and the logical channel 6 by using the next MAC TTI (referred to as TTI2) of the UE according to the air interface allocation capability;
  • the S0070 MAC checks that the MAC SDU0 DiscardTimer in the MAC PDU0 is invalid, so the MAC SDU0 is deleted; the DiscardTimer of the MAC SDU1 to which the MAC SDU1 Segment belongs is not invalidated, so the MAC SDU1 is not deleted.
  • the S0080 MAC determines that the partial data of the MAC SDU1 of the TTI2 transmission logical channel 5 and the MAC SDU2 of the logical channel 6 are concatenated into one MAC PDU1. And then TT2 sends.
  • the S0100 MAC checks that the MAC SDU1 in the MAC PDU1 still has some data in the HARQ, so the MAC SDU is not deleted; the MAC SDU2 and the corresponding DiscardTimer are deleted.
  • the related data using the MAC SDU and/or the MAC SDU is retransmitted again within the waiting time after the retransmission fails. Therefore, the problem that the two-layer retransmission mechanism in the related technology may delay the delivery of service data to the application layer in time and affect the service QoS may be solved, thereby accelerating the delivery of data to the application layer and improving the effect of service QoS.
  • the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation.
  • the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk,
  • the optical disc includes a plurality of instructions for causing a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform various embodiments of the present invention. The method described.
  • a data retransmission device is also provided, which is used to implement the above-mentioned embodiments and preferred embodiments, and has not been described again.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • FIG. 6 is a structural diagram of a data retransmission apparatus according to an embodiment of the present invention. As shown in FIG. 6, the apparatus includes: a detection module 62 and a retransmission module 64.
  • the detecting module 62 is configured to detect, when the MAC SDU retransmission fails, whether the failure waiting time of the MAC SDU expires;
  • the retransmission module 64 is configured to resend the related data of the MAC SDU and/or the MAC SDU if the determination result is no.
  • the MAC SDU related data is a MAC SDU to which the MAC SDU fragment belongs.
  • the MAC SDU is directly sent or the MAC SDU is split into multiple MAC SDU segments, and then sent; the MAC SDU segment is directly sent or the MAC SDU to which the MAC SDU segment belongs is retransmitted.
  • Deleting the MAC SDU to which the MAC SDU segment belongs and the failure waiting time of the MAC SDU when the MAC SDU retransmission to which the MAC SDU segment belongs is successful; if the MAC SDU fragment fails to be retransmitted and the determination result is yes, If all the SDU segments of the MAC SDU to which the MAC SDU segment belongs are retransmitted, the MAC SDU to which the MAC SDU segment belongs and the MAC SDU to which the MAC SDU segment belongs are deleted.
  • the retransmission module is further configured to delete the MAC SDU and the failure waiting time set for the MAC SDU when the retransmission is successful, or if the retransmission fails and the determination result is yes.
  • FIG. 7 is a structural diagram of another data retransmission apparatus according to an embodiment of the present invention. As shown in FIG. 7, the apparatus includes: receiving module 72 and transmitting, in addition to all the modules shown in FIG. The module 74 is sent.
  • the receiving module 72 is configured to receive the MAC SDU sent by each logical channel, and set the failure waiting time for the MAC SDU;
  • the sending module 74 is configured to encapsulate the MAC SDU, obtain a MAC PDU, and send a MAC PDU.
  • each of the above modules may be implemented by software or hardware.
  • the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the above modules are in any combination.
  • the forms are located in different processors.
  • FIG. 8 is a structural diagram of a MAC device according to an embodiment of the present invention. As shown in FIG. 8, the device includes a processor 82 and a retransmission module 84.
  • the processor 82 is configured to detect, when the MAC SDU retransmission fails, whether the failure waiting time of the MAC SDU is timed out; if the determination result is no, resend the MAC SDU and/or the MAC SDU related data;
  • the transmission interface 84 is configured to transmit related data of the MAC SDU and/or the MAC SDU.
  • Embodiments of the present invention also provide a storage medium.
  • the foregoing storage medium may be configured to store program code for performing the following steps:
  • the foregoing storage medium may include, but is not limited to, a USB flash drive, a Read-Only Memory (ROM), and a random access memory (RAM, Random).
  • ROM Read-Only Memory
  • RAM random access memory
  • modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the related data using the MAC SDU and/or the MAC SDU is retransmitted again within the waiting time after the retransmission fails. Therefore, the problem that the two-layer retransmission mechanism in the related technology may delay the delivery of service data to the application layer in time and affect the service QoS may be solved, thereby accelerating the delivery of data to the application layer and improving the effect of service QoS.

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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

La présente invention concerne un procédé et un appareil de retransmission de données, et un dispositif de commande d'accès au support (MAC). Le procédé de retransmission de données comprend les étapes suivantes : si la retransmission d'une unité de données de service de contrôle d'accès au support (SDU MAC) échoue, détecter si le temps d'attente de défaillance de la SDU MAC a expiré; si le résultat de détermination est négatif, retransmettre la SDU MAC et/ou les données pertinentes de la SDU MAC. La présente invention résout les problèmes dans l'état de la technique associé selon lesquels un mécanisme de retransmission à deux couches peut retarder la soumission opportune de données de service à une couche d'application, et affecter la qualité de service (QoS) du service, ce qui permet d'obtenir l'effet d'accélération de la soumission des données à la couche d'application et d'améliorer la QoS du service.
PCT/CN2017/107678 2016-10-26 2017-10-25 Procédé et appareil de retransmission de données, et dispositif mac WO2018077195A1 (fr)

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CN201610956894.0 2016-10-26
CN201610956894.0A CN107995654A (zh) 2016-10-26 2016-10-26 数据重传方法及装置、mac设备

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WO2020062126A1 (fr) * 2018-09-29 2020-04-02 Oppo广东移动通信有限公司 Procédé de traitement de paquet de données, entité et support de stockage
WO2020220348A1 (fr) * 2019-04-30 2020-11-05 Nec Corporation Retransmission de liaison descendante pour transmission multi-trp/panneau

Citations (3)

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CN1512702A (zh) * 1999-04-06 2004-07-14 ����ɭ�绰�ɷ����޹�˾ 半可靠重传协议的分组丢弃通告
US20060156165A1 (en) * 2004-12-02 2006-07-13 Samsung Electronics Co., Ltd. Auto re-transmission request system and method in a wireless communication system
CN101132260A (zh) * 2006-08-22 2008-02-27 中兴通讯股份有限公司 增强上行链路异步混合自动重传请求的重传控制方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1512702A (zh) * 1999-04-06 2004-07-14 ����ɭ�绰�ɷ����޹�˾ 半可靠重传协议的分组丢弃通告
US20060156165A1 (en) * 2004-12-02 2006-07-13 Samsung Electronics Co., Ltd. Auto re-transmission request system and method in a wireless communication system
CN101132260A (zh) * 2006-08-22 2008-02-27 中兴通讯股份有限公司 增强上行链路异步混合自动重传请求的重传控制方法

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