WO2020062003A1 - Procédé et appareil de sélection de ressources pour une communication de liaison latérale - Google Patents

Procédé et appareil de sélection de ressources pour une communication de liaison latérale Download PDF

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Publication number
WO2020062003A1
WO2020062003A1 PCT/CN2018/108254 CN2018108254W WO2020062003A1 WO 2020062003 A1 WO2020062003 A1 WO 2020062003A1 CN 2018108254 W CN2018108254 W CN 2018108254W WO 2020062003 A1 WO2020062003 A1 WO 2020062003A1
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WO
WIPO (PCT)
Prior art keywords
resource
joint
aperiodic
group
group member
Prior art date
Application number
PCT/CN2018/108254
Other languages
English (en)
Inventor
Yong Liu
Dong Li
Chuan MA
Original Assignee
Nokia Shanghai Bell Co., Ltd.
Nokia Solutions And Networks Oy
Nokia Technologies Oy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nokia Shanghai Bell Co., Ltd., Nokia Solutions And Networks Oy, Nokia Technologies Oy filed Critical Nokia Shanghai Bell Co., Ltd.
Priority to CN201880098045.3A priority Critical patent/CN112753256B/zh
Priority to PCT/CN2018/108254 priority patent/WO2020062003A1/fr
Publication of WO2020062003A1 publication Critical patent/WO2020062003A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/543—Allocation or scheduling criteria for wireless resources based on quality criteria based on requested quality, e.g. QoS
    • 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
    • H04L47/36—Flow control; Congestion control by determining packet size, e.g. maximum transfer unit [MTU]
    • H04L47/365—Dynamic adaptation of the packet size
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management

Definitions

  • the present invention relates to a method and apparatus of the scheme of resource selection for Sidelink communication.
  • vehicle networking may realize a comprehensive network architecture of V2X (Vehicle to Everything) inside vehicle, vehicle to vehicle, vehicle to road, vehicle to person, vehicle to cloud service platform, which greatly improves vehicle intelligence.
  • V2X Vehicle to Everything
  • LTE-V2X mainly solves the problem of "Sensor Sharing" among traffic entities. It may expand the range of vehicle-borne detection systems (such as radar and camera) from tens of meters, a sight to hundreds of meters, non-sight range, and double the efficiency of vehicle-borne AI to realize assistant driving in relatively simple traffic scenes.
  • LTE V2X includes two technologies: LTE-V-Cell and LTE-V-Direct.
  • the LTE-V-Cell is based on the base station and LTE-V-Direct is the direct communication between vehicles.
  • the LTE-V-Direct mode may be introduced into Sidelink (LTE-D2D related technology) .
  • UE In LTE-V-Cell mode, UE requests the transmission of resources from eNB, and the information between users needs to be allocated through the base station to control the transmission of information and data.
  • PC5 interface is defined on the basis of Sidelink. The existence of PC5 interface gives users the right to choose independently. Users may choose whether to connect the base station or adjust resources from the resource pool according to the actual situation.
  • V2X messages are mostly cyclical, and the service duration of which is longer.
  • the number of V2X terminals increases, and the sizes of V2X packets vary randomly, so periodic traffic mode may not effectively support the traffic demand of different packet sizes in resource allocation.
  • an aspect of this invention relates to a method and apparatus of the resource selection for Sidelink communication, with the method comprising the following steps:
  • an aspect of this invention relates to a method and apparatus of the resource selection for Sidelink communication, with the method comprising the following steps:
  • an aspect of this invention relates to a method and apparatus of the resource selection for Sidelink communication, with the apparatus comprising means for performing:
  • an aspect of this invention relates to a method and apparatus of the resource selection for Sidelink communication, with the apparatus comprising means for performing:
  • the packet with small probability and larger than the predetermined value may be segmented into the base part of periodic transmission and the aperiodic part of aperiodic transmission. This ensures the persistence of V2X periodic traffic and improves the efficiency of resource allocation.
  • FIG. 1 shows an example of a formation including one group leader and multiple group members.
  • FIG. 2 shows an example embodiment of a method of the resource selection for Sidelink communication.
  • FIG. 3 shows another example embodiment of a method of the resource selection for Sidelink communication.
  • FIG. 4 shows an example of a method of the resource selection for Sidelink communication that jointly executed by the group leader and the group member.
  • FIG. 5 shows an example of the steps executed by the group member.
  • FIG. 6 shows an example of the steps executed by the group leader.
  • Sidelink is an adaptation of the core LTE standard that allows for communication between two or more nearby devices, using E-UTRAN technology (Evolved UMTS Terrestrial Radio Access Network) without the need of a base station. This technology may be used for the out-of-network coverage scenario.
  • E-UTRAN technology Evolved UMTS Terrestrial Radio Access Network
  • the formation driving scenario shown in FIG. 1 indicates that as used in this invention, the term “formation” may include a platoon leader and multiple platoon members, and the platoon members in the formation periodically receive data sent by the platoon leader for formation operation.
  • the distance between vehicles may be very small, thus reducing the fuel consumption of rear vehicles.
  • the platoon leader and the multiple members may be regarded as user devices (UEs) .
  • UEs user devices
  • platoon changes to group for generality.
  • platoon may be an example of group.
  • an embodiment of a method of the resource selection for Sidelink communication that executed by the group member comprises:
  • step 200 segmenting a packet with a packet size larger than a predetermined value into a base part and an aperiodic part;
  • step 210 transmitting the base part through periodic traffic and sending a resource request of the aperiodic part to a group leader;
  • step 220 transmitting the aperiodic part through the group leader based on the resource allocated by a joint resource selection.
  • the predetermined value is firstly determined based on the data traffic.
  • the periodic traffic model 2 in NR V2X includes:
  • Packet size 1200 bytes with a probability of 0.2 and 800 bytes with a probability of 0.8
  • the predetermined value of 800 bytes is determined based on the data traffic.
  • the packet with packet size larger than the predetermined value is segmented into the base part and the aperiodic part. For instance, the packet is segmented into a first packet of the predetermined value and a second packet with the value equal to the difference between the packet size and the predetermined value, where the first packet is the base part, the second packet is the aperiodic part.
  • the packet segmenting process may be performed at the RLC (Radio Link Control) layer or the MAC (Media Access Control) layer.
  • the packet of 1200 bytes is segmented into a base part of 800 bytes and an aperiodic part of 400 bytes.
  • the base part may be treated as periodic traffic with fixed traffic.
  • the base part may be transmitted as periodic data, and among the transmitting, SPT (Semi-Persistent Transmission) is alternative.
  • SPT Semi-Persistent Transmission
  • a group member may select resources better suited for its own surrounding radio environment.
  • the group member sends the resource request of the aperiodic part to the group leader, which means the group member requests resource from the group leader. If the aperiodic packet has a low probability, signaling overhead between the group leader and the group member is low.
  • the group member segments a packet of 1200 bytes into a base part of 800 bytes which employs SPT and sends the resource request of the aperiodic part to group leader for arranging the rest resource of 400 bytes.
  • the group leader if the resources allocated by the group leader based on the joint resource selection are received within a predetermined latency limit, then the group member transmits the aperiodic part through the allocated resource.
  • the group leader jointly reserves resources for aggregating data traffic for all members of the formation, which may easily evade other sensing UEs, resulting in high resource efficiency similar to the base packets.
  • joint resource selection may include the resources jointly selected by the group leader.
  • the group member transmits data traffic based on the resources of its own choice. This is like one-shot transmission specified in LTE.
  • the resource selection is one-shot and sensing of one-shot transmission may not predict resource usage in the future.
  • the predetermined latency limit is generally smaller than 100ms.
  • SPT Semi-Persistent Transmission
  • the packet size is smaller than or equal to the predetermined value of the base part and the packet size of the large probability use periodic traffic transmission, forming the continuity of periodic traffic transmission.
  • the group member selects periodic resources by itself and selects resources better suited for its own surrounding radio environment, which leads to high resource efficiency.
  • This embodiment of the method of the resource selection for Sidelink communication segments the packet with a small probability and larger packet size than the predetermined value into the base part of periodic transmission and the aperiodic part of aperiodic transmission.
  • the resources are allocated to the aperiodic transmission of the aperiodic part by the group leader, effectively avoiding transmission that conflicts with the UEs outside the formation. Even if no resource allocated by the group leader is received, the group member is able to transfer data once based on the resource of its own choice, without affecting the use of future resources.
  • both periodic and non-periodic data transmission may adopt SPT, which ensures the design of SPT through PC5 interface, thus avoiding the resource conflict of data transmission between vehicles within the coverage of a traditional cellular cell in V2X service and improving the reliability of data transmission.
  • an embodiment of a method of the resource selection for Sidelink communication that executed by the group leader comprises:
  • step 300 receiving a resource request of an aperiodic part sent by a group member
  • step 310 allocating the resources to the group member based on a joint resource selection.
  • the group leader finds resources in the reserved joint resource after receiving the resource request of the aperiodic part, and allocates the resources found to the group member to transmit the aperiodic part based on the joint resource selection within the predetermined latency limit.
  • the event is recorded by the group leader to estimate joint data traffic statistics, if no resource is found.
  • joint data traffic statistics is estimated by analyzing the resource request of the aperiodic part or/and resource assignment results for members, or/and by collecting traffic property information from the group members.
  • the resource assignment results for the group members may include resources allocated to the group members after the resources are found within the predetermined latency limit, and the event is recorded by the group leader after no resource is found within the predetermined latency limit. For example, if there are 5 members in the formation and take the periodic traffic model 2 in V2X of NR as an example, the group leader needs to reserve resources that may support 5 group members for non-periodic transmission of 400 bytes.
  • the group leader may reserve the joint resource semi-persistently, which facilitates sensing by a UE outside the formation, making it easier to avoid conflict between the transmission of the aperiodic part from the group members inside the formation and the UEs outside the formation.
  • the group leader is able to set the priority of reserving joint resource.
  • the group leader may set the resource reservation priority as high and set reservation counter to be a big value. Then aggregated resources for all the group members may be reserved for a long time and seen as a semi-persistent reservation by the UEs outside the formation.
  • This embodiment of the method of the resource selection for Sidelink communication segments the packet with a small probability and larger packet size than the predetermined value into the base part of periodic transmission and the aperiodic part of aperiodic transmission
  • the resources are allocated to the aperiodic transmission of the aperiodic part by the group leader, effectively avoiding transmission that conflicts with the UE outside the formation. Even if no resource allocated by the group leader is received, the group member is able to transfer data once based on the resource of its own choice, without affecting the use of future resources.
  • both periodic and non-periodic data transmission may adopt SPT, which ensures the design of SPT through PC5 interface, thus avoiding the resource conflict of data transmission between vehicles within the coverage of a traditional cellular cell in V2X service and improving the reliability of data transmission.
  • an embodiment of a method of the resource selection for Sidelink communication that jointly executed by the group leader and the group member comprises:
  • step 400 the group member transfers the packet with packet size smaller than or equal to the predetermined value through periodic data transmission
  • step 410 the group member segments the packet with packet size larger than the predetermined value into the base part and the aperiodic part;
  • step 420 the group member periodically transmits the base part
  • step 430 the group member sends the resource request of the aperiodic part to the group leader;
  • step 440 the group leader finds the resource in the reserved joint resource based on the resource request of the aperiodic part, and if the resource is found within the predetermined latency limit based on the joint resource selection, executes step 450 to step 460; otherwise, executes step 470 to step 480;
  • step 450 the group leader allocates the resource to the group member
  • step 460 the group member transmits the aperiodic part through the allocated resource
  • step 470 the group leader records the event
  • step 480 the group member transmits the aperiodic part through the resources of its own choice
  • the group leader estimates joint data traffic statistics by analyzing the resource request of the aperiodic part or/and resource assignment results for the group members, or/and by collecting traffic property information from the group members.
  • the steps executed by the group member is shown in the FIG. 5
  • the steps executed by the group leader is shown in the FIG. 6.
  • This embodiment of the method of the resource selection for Sidelink communication segments the packet with a small probability and larger packet size than the predetermined value into the base part of periodic transmission and the aperiodic part of aperiodic transmission.
  • the resources are allocated to the aperiodic transmission of the aperiodic part by the group leader, effectively avoiding transmission that conflicts with the UEs outside the formation. Even if no resource allocated by the group leader is received, the group member is able to transfer data once based on the resource of its own choice, without affecting the use of future resources.
  • both periodic and non-periodic data transmission may adopt SPT, which ensures the design of SPT through PC5 interface, thus avoiding the resource conflict of data transmission between vehicles within the coverage of a traditional cellular cell in V2X service and improving the reliability of data transmission.
  • An embodiment of an apparatus of the resource selection executed by the group member for Sidelink communication comprising means for performing:
  • the means are further configured to perform:
  • the means are further configured to perform:
  • Another embodiment of an apparatus of the resource selection executed by the group leader for Sidelink communication comprising means for performing:
  • the means are further configured to perform:
  • the means are further configured to perform:
  • the means are further configured to perform:
  • estimating joint data traffic statistics by analyzing the resource requests of the aperiodic part sent by the group members or/and the resource assignment results for the group members, or/and by collecting traffic property information from the group members.

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

Abstract

La présente invention concerne un procédé et un appareil de sélection de ressources pour une communication de liaison latérale. Le procédé consiste : à segmenter un paquet ayant une taille de paquet supérieure à une valeur prédéterminée dans une partie de base et dans une partie apériodique ; à transmettre la partie de base à travers un trafic périodique et envoyer une requête de ressources de la partie apériodique à un chef de groupe ; et à transmettre la partie apériodique à travers le chef de groupe sur la base des ressources attribuées par une sélection de ressources commune. Le procédé consiste également : à recevoir une requête de ressources d'une partie apériodique envoyée par un élément de groupe ; et à attribuer les ressources à l'élément de groupe sur la base d'une sélection de ressources commune. Le procédé et l'appareil assurent la persistance du trafic périodique V2X et améliorent l'efficacité d'attribution de ressources.
PCT/CN2018/108254 2018-09-28 2018-09-28 Procédé et appareil de sélection de ressources pour une communication de liaison latérale WO2020062003A1 (fr)

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Application Number Priority Date Filing Date Title
CN201880098045.3A CN112753256B (zh) 2018-09-28 2018-09-28 用于侧行链路通信的资源选择方法和装置
PCT/CN2018/108254 WO2020062003A1 (fr) 2018-09-28 2018-09-28 Procédé et appareil de sélection de ressources pour une communication de liaison latérale

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PCT/CN2018/108254 WO2020062003A1 (fr) 2018-09-28 2018-09-28 Procédé et appareil de sélection de ressources pour une communication de liaison latérale

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CN115442774A (zh) * 2021-06-04 2022-12-06 华为技术有限公司 一种资源选择的方法和装置

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CN107371194A (zh) * 2016-05-12 2017-11-21 株式会社Ntt都科摩 资源预留方法、资源确定方法、基站和移动台
WO2018006313A1 (fr) * 2016-07-07 2018-01-11 Panasonic Intellectual Property Corporation Of America Comportement d'attribution de ressources semi-persistante améliorée pour transmissions v2x

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