WO2016119282A1 - Procédé et système d'attribution de ressource pour une communication directe d'un terminal, terminal et station de base - Google Patents

Procédé et système d'attribution de ressource pour une communication directe d'un terminal, terminal et station de base Download PDF

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Publication number
WO2016119282A1
WO2016119282A1 PCT/CN2015/073427 CN2015073427W WO2016119282A1 WO 2016119282 A1 WO2016119282 A1 WO 2016119282A1 CN 2015073427 W CN2015073427 W CN 2015073427W WO 2016119282 A1 WO2016119282 A1 WO 2016119282A1
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WIPO (PCT)
Prior art keywords
time
terminal
frequency resource
frequency
data transmission
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PCT/CN2015/073427
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English (en)
Chinese (zh)
Inventor
雷艺学
李明菊
张晨璐
张云飞
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宇龙计算机通信科技(深圳)有限公司
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Publication of WO2016119282A1 publication Critical patent/WO2016119282A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling

Definitions

  • the time-frequency resource may be selected according to the time limit of the data transmission service, and specifically, when the data transmission service is required for a time limit, The UE directly requests the base station to change to the resource scheduling mode adopting mode A, or selects the corresponding time-frequency resource from the abnormal time-frequency resource pool.
  • the UE shares the time-frequency resource in the time-frequency resource pool broadcasted by the base station in the communication scenario of the mode B, after detecting the time-frequency resources occupied by the other D2D terminals, according to other D2D terminals.
  • the occupied time-frequency resources are used to select time-frequency resources for processing the data transmission service, so that the problem of conflicting allocation of time-frequency resources can be avoided; at the same time, the attribute information of different data transmission services identifies the importance of the data transmission service.
  • the time limit so by selecting the time-frequency resource for processing the data transmission service according to the attribute information of the data transmission service, it is possible to select the time frequency according to the required level (or degree of criticality) of the data transmission service for the time limit.
  • the indication may be sent to the base station to select by other means. Frequency resources.
  • the processing unit 204 is configured to select a time-frequency resource for processing the data transmission service according to the time-frequency resource occupied by the other D2D terminal and the attribute information of the data transmission service.
  • Resources such as when the data transmission service has a time limit and the time-frequency resources in the time-frequency resource pool are insufficient, other time-frequency resources are selected for data transmission, which effectively solves the resource selection problem when the time-frequency resources are insufficient, and realizes Rational allocation and use of resources.
  • the processing unit 204 further includes: a second determining unit 2046, configured to determine, at the first determining unit 2042, all time-frequency resources in the pre-allocated time-frequency resource pool When it is occupied, it is determined whether the data transmission service has a time limit requirement according to the attribute information of the data transmission service; the sending unit 2048 is configured to, when the second determining unit 2046 determines that the data transmission service has a time limit requirement, The base station sends a resource scheduling request to request the base station to allocate a time-frequency resource for processing the data transmission service by using a configuration mode of directly scheduling time-frequency resources; or
  • the present invention also proposes a terminal (not shown), comprising: a resource configuration system 200 for terminal direct connection communication suitable for a terminal as shown in FIG. 2.
  • FIG. 3 shows a schematic flow chart of a resource configuration method for terminal direct communication applicable to a base station according to an embodiment of the present invention.
  • a resource configuration method for terminal direct connection communication applicable to a base station includes: Step 302: Receive a resource request indication sent by any D2D terminal; Step 304, according to the The resource request indication allocates a new time-frequency resource pool to any of the D2D terminals, or instructs any of the D2D terminals to use other configured time-frequency resource pools, or allocates a dedicated time-frequency to any of the D2D terminals.
  • the D2D terminal may be used. Allocating a new time-frequency resource pool, or instructing the D2D terminal to use other configured time-frequency resource pools, or allocating dedicated time-frequency resources to solve the problem of insufficient time-frequency resources; and in broadcasting signaling or indication information
  • the identifier information is added to indicate that the D2D terminal preferentially uses the allocated new time-frequency resource pool or the other time-frequency resource pool or the dedicated time-frequency resource, so that the D2D terminal that sends the resource request indication can preferentially use the time-frequency resource processing data. Transmission business.
  • FIG. 4 shows a schematic block diagram of a resource configuration system for terminal direct communication applicable to a base station according to an embodiment of the present invention.
  • a resource configuration system 400 for terminal direct communication applicable to a base station includes: a receiving unit 402, a first processing unit 404, and a second processing unit 406.
  • a second processing unit 406 configured to: when the new time-frequency resource pool is broadcast by broadcast signaling, or by using the indication information, to indicate that the any other D2D terminal uses the other time-frequency resource pool or use the dedicated Adding identification information to the broadcast signaling or the indication information to indicate that any of the D2D terminals preferentially use the new time-frequency resource pool or the other time-frequency resource pool or the Dedicated time-frequency resources.
  • the broadcast signaling or the indication information includes: RRC signaling, media access control unit signaling, or PC3 between the D2D terminal and the ProSe Function. Message.
  • the present invention also proposes a base station (not shown), comprising: a resource configuration system 400 for terminal direct communication suitable for a base station as shown in FIG.
  • the technical solution of the present invention is mainly for solving the problem of resource allocation conflict and resource shortage in the case of mode B, and the technical solution proposed by the present invention can be used regardless of whether there is no relay or relay.
  • the UE only listens to the resource usage of other nearby UEs; if it is in the relay situation, if the relay node assumes the resource allocation function of a cluster of UEs, Then the UE can monitor the resource allocation of the relay node. Specifically, if the relay node (ie, the relay terminal) assumes the function of allocating resources for a plurality of UEs, the relay node transmits scheduling information for allocating time-frequency resource blocks for the plurality of terminals.
  • the D2D terminal that needs to perform the data transmission service needs to distinguish whether the surrounding D2D terminal is a relay node when determining the resource usage of other D2D terminals, and if it is a relay node, it can monitor and receive the message sent by the relay node. Thereby, the time-frequency resource usage of other terminals controlled by the relay node is known. Through this mechanism, the relay node solves the resource conflict problem of the D2D terminal to some extent.
  • the time-frequency resources allocated by the relay node to the relayed terminal may also be spatially multiplexed. Therefore, as far as the relay node is concerned, it acquires the resource pool from the base station in the mode B manner, but for the relayed UE, the scheduling resource is obtained from the relay node in the mode A manner. It should also be noted that this mechanism requires the relay node to know the existence of the relayed UE, that is, it may be necessary to obtain the information of the relayed UE by performing a D2D discovery mechanism or other interaction.
  • the present invention also assumes that the base station and the terminal can support D2D communication of mode A and mode B.
  • the UE needs to listen to other D2D sending resources that the UE has used before the task that is about to send data, specifically including:
  • the UE needs to determine whether there is a time limit for data transmission.
  • the D2D data has a time limit requirement, and depends on the service type of the ProSe application layer. The judgment of the UE on the presence or absence of the time limit may be determined according to the service type.
  • the UE is likely to successfully monitor the idle resources at the next attempt, which may be caused by the mobile being away from other UEs, or the other UEs may stop the D2D data transmission of the mode B.
  • the UE may adopt two methods, one is to directly request the scheduling resource of the mode A from the eNB, so as to directly send the data; the second is to use the abnormal resource pool to enter Line D2D data transmission.
  • the message may be a MAC, RRC or PC3 message between the UE and the ProSe Function.
  • a resource configuration method for D2D communication includes:
  • Step 502 The UE has a data transmission requirement, and initially determines that the communication mode is mode B.
  • step 504 it is monitored whether there are available mode B resources.
  • step 506 it is determined whether the mode B resource is available. If yes, step 518 is performed; otherwise, step 508 is performed.
  • Step 508 When it is determined that no mode B resource is available, determine whether the data transmission is time-limited. If yes, execute step 514; otherwise, perform step 510.
  • step 510 when it is determined that the data transmission has no time limit requirement, the monitoring is continued after a certain time delay.
  • step 512 it is determined whether the number of monitoring times or the monitoring time is over-limit. If yes, step 514 is performed; otherwise, step 504 is performed.
  • step 514 the UE sends a resource request to the base station (eNB).
  • step 516 it is determined whether the UE successfully acquires the resource configuration. If yes, step 518 is performed.
  • step 518 data transmission is performed.
  • the operations performed by the UE for time-limited requirements need to be within the range allowed by the network. Specifically, when the UE finds that the mode B resource is insufficient and the retry is unsuccessful, the eNB determines whether the mode B resource pool or the mode A dedicated resource can be allocated again, and the UE needs to be in the network according to the UE.
  • the operation of the eNB described above may also be implemented by a ProSe Function located on the network side, depending on the execution of these policies.
  • the D2D transmitting UE1 determines whether there is a mode B resource available when determining a data transmission request, and if it is determined that no mode B resource is available and has not been sent after a certain time or number of attempts, or data
  • step 602 is performed, that is, the resource request is sent to the eNB or the ProSe Function, and the reason of the request is sent.
  • the MAC signaling or the RRC signaling may be sent to the eNB, or the PC3 signaling may be sent to the ProSe Function.
  • step 604 the base station or the ProSe Function performs resource allocation, and step 604 is performed, that is, the eNB notifies the allocated resource to the UE by sending MAC signaling or RRC signaling, or the ProSe Function notifies the UE of the allocated resource by sending PC3 signaling.
  • the above solution of the present invention enables a UE that utilizes mode B shared resource pool communication to perform reasonable resource allocation to meet D2D communication of different service requirements.
  • the present invention proposes a new resource configuration scheme for terminal direct communication, which can avoid the problem of conflicts in the allocation of time-frequency resources, and effectively solve the problem.
  • the resource selection problem realizes the rational allocation and use of resources.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé et un système d'attribution de ressource pour une communication directe d'un terminal, le terminal et une station de base. Le procédé d'attribution de ressource pour une communication directe d'un terminal, pouvant s'appliquer au terminal, consiste à : lorsqu'il est déterminé qu'un service de transmission de données a besoin d'être réalisé, détecter une ressource temps-fréquence occupée par un autre terminal de dispositif à dispositif (D2D) ; et sélectionner, selon la ressource temps-fréquence occupée par un autre terminal D2D et des informations d'attribut du service de transmission de données, une ressource temps-fréquence pour traiter le service de transmission de données. Au moyen du schéma technique de la présente invention, le problème du conflit dans l'attribution de ressource temps-fréquence peut être évité, le problème de sélection de ressource lorsque des ressources temps-fréquence sont insuffisantes, peut être efficacement résolu, et, en conséquence, des ressources sont attribuées et utilisées correctement.
PCT/CN2015/073427 2015-01-30 2015-02-28 Procédé et système d'attribution de ressource pour une communication directe d'un terminal, terminal et station de base WO2016119282A1 (fr)

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CN201510052175.1 2015-01-30
CN201510052175.1A CN104540236B (zh) 2015-01-30 2015-01-30 用于终端直连通信的资源配置方法、系统、终端和基站

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WO2024026630A1 (fr) * 2022-08-01 2024-02-08 Oppo广东移动通信有限公司 Procédé, appareil et dispositif de communication, support de stockage, puce, produit, et programme

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