WO2018095156A1 - 一种v2x网络资源信息指示方法及基站 - Google Patents

一种v2x网络资源信息指示方法及基站 Download PDF

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Publication number
WO2018095156A1
WO2018095156A1 PCT/CN2017/106035 CN2017106035W WO2018095156A1 WO 2018095156 A1 WO2018095156 A1 WO 2018095156A1 CN 2017106035 W CN2017106035 W CN 2017106035W WO 2018095156 A1 WO2018095156 A1 WO 2018095156A1
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Prior art keywords
base station
sidelink
information
resource
resource information
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PCT/CN2017/106035
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English (en)
French (fr)
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周欣
陶雄强
姜春霞
吕征南
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普天信息技术有限公司
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/12Wireless traffic scheduling
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/24Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30Services specially adapted for particular environments, situations or purposes
    • H04W4/40Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/23Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

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  • the present invention relates to the field of communications technologies, and in particular, to a V2X network resource information indication method and a base station.
  • V2X Vehicle to the outside world
  • V2X mainly studies vehicle data transmission schemes based on the 3rd Generation Partnership Project (3GPP) communication protocol.
  • 3GPP 3rd Generation Partnership Project
  • Currently available V2X applications include: Vehicle-to-Vehicle (V2V), Vehicle-to-Infrastructure (V2I), Vehicle-to-Pedestrian (V2P) ) and Vehicle-to-Network (V2N).
  • V2X applications will improve driving safety, reduce congestion and vehicle energy consumption, improve traffic efficiency and in-vehicle entertainment information.
  • V2X resource allocation methods for V2X
  • one is an evolved Node B (eNB) scheduling mode
  • the other is a user equipment (User Equipment, UE) autonomously selecting a resource mode.
  • the scheduling mode of the base station scheduling mode is similar to that of the device-to-device (D2D) direct communication technology.
  • the UE needs to enter the Radio Resource Control (RRC) connection state to transmit data.
  • RRC Radio Resource Control
  • the V2X-enabled UE requests the eNB.
  • the eNB uses the resources used to transmit data to schedule resources used on the V2X sublink (Sidelink, SL).
  • the UE autonomously selects resources from the resource pool for transmission according to certain rules, and the V2X Sidelink communication introduces a sensing mechanism to reduce resource conflicts.
  • the mode 3 mode corresponding to the base station scheduling mode refers to the resource pool used by the base station to configure the UE, and the base station allocates specific resource location information in the configured resource pool to the UE through the PDCCH according to the Sidelink BSR reported by the UE, for example, downlink control information (Downlink Control) Information, DCI) indicates location information of resources used by the PC5 port of the UE (the communication interface between the UEs) to transmit data.
  • DCI Downlink Control information
  • the resource allocation mode for the V2X is the mode3 mode corresponding to the scheduling mode.
  • FIG. 1 shows a scenario in which the mode3 mode UE transmits the V2X service under the same carrier, and the UE1 and the UE2 transmit the V2X message in the mode3 mode, and the resources used by the UE are allocated by the eNB1. Therefore, there is no interference between UE1 and UE2. Similarly, UE3 and UE4 will not interfere. However, for UE2 and UE3, they belong to different eNBs, UE2 is an edge user of eNB1, UE3 is an edge user of eNB2, and UE2 and UE3 are even under different Public Land Mobile Network (PLMN). Under different eNBs, there may be a resource allocated by eNB1 for UE2 and a resource conflict allocated by eNB2 for UE3, and a co-frequency inter-cell Sidelink interference is generated between UE2 and UE3.
  • PLMN Public Land Mobile Network
  • the 3GPP protocol does not provide a solution to the interference generated by the above scenario. Therefore, how to reduce the interference of mode3 mode resource allocation between intra-frequency carriers becomes a problem to be solved.
  • the present invention proposes a V2X network resource information indicating method and a base station that overcome the above problems or at least partially solve the above problems.
  • the first aspect of the present invention provides a V2X network resource information indication method, including:
  • the source base station determines whether the resource used in the mode3 mode corresponding to the scheduling mode changes
  • the source base station sends a message carrying the V2X sublink Sidelink resource information to each target base station connected to the source base station through the X2 port, so that the target base stations are based on the V2X Sidelink resource information in the mode3.
  • resources are allocated to edge users to implement interference coordination of V2X Sidelink communication.
  • the source base station determines whether the resource used by the mode3 mode corresponding to the scheduling mode changes, including:
  • the source base station determines whether the V2X resource pool corresponding to the scheduling mode changes, and the source base station determines whether the periodic time-frequency resource of the V2X Sidelink semi-persistent scheduling changes.
  • the source base station sends the message carrying the V2X sub-link Sidelink resource information to the target base station connected to the source base station, the source base station includes:
  • the source base station determines the V2X resource pool corresponding to the scheduling mode based on the load information, Adjusting, and/or the source base station receives the periodic V2X service initiated by the user equipment UE, and the source base station determines, according to the preset policy, the periodic V2X service allocation periodicity initiated by the UE by using the V2X Sidelink semi-persistent scheduling mode.
  • the time-frequency resource the source base station sends a message carrying the V2X Sidelink resource information to each target base station connected to the source base station through the X2 port;
  • the V2X Sidelink resource information includes: V2X resource pool information corresponding to the scheduling mode and/or periodic time-frequency resource information of the V2X Sidelink semi-persistent scheduling.
  • the source base station sends, by using the X2 port, a message carrying the V2X sub-link Sidelink resource information to each target base station connected to the source base station, including:
  • the source base station sends a load information message carrying the V2X Sidelink resource information to each target base station connected to the source base station through the X2 port.
  • the V2X Sidelink resource information includes: a source cell identifier and a target cell identifier, and further includes: V2X resource pool information corresponding to the scheduling mode and/or periodic time-frequency resource information of the V2X Sidelink semi-persistent scheduling;
  • the periodic time-frequency resource information of the V2X Sidelink semi-persistent scheduling includes time domain start time, period, and frequency domain resource indication information of resources used by the V2X Sidelink semi-persistent scheduling;
  • the source cell is a cell corresponding to the source base station
  • the target cell is a cell corresponding to the target base station.
  • the present invention also provides a base station, including:
  • the determining unit determines whether the resource used in the mode3 mode corresponding to the determining scheduling mode changes
  • a sending unit configured to: when the determining unit determines that the resource used in the mode3 mode corresponding to the scheduling mode changes, send a message carrying the V2X sublink Sidelink information to each target base station connected to the base station by using the X2 interface. So that the target base stations allocate resources to the edge users in the mode3 mode based on the V2X Sidelink resource information, and implement interference coordination of the V2X sublink Sidelink communication.
  • the determining unit is configured to:
  • the sending unit is configured to:
  • the determining unit determines that the V2X resource pool corresponding to the scheduling mode needs to be adjusted based on the load information, and/or the determining unit receives the periodic V2X service initiated by the user equipment UE, and determines to adopt the V2X Sidelink semi-persistence based on the preset policy.
  • the scheduling mode is to allocate periodic time-frequency resources to the periodic V2X service initiated by the UE, the message carrying the V2X Sidelink resource information is sent to the target base stations through the X2 interface;
  • the V2X Sidelink resource information includes: V2X resource pool information corresponding to the scheduling mode and/or periodic time-frequency resource information of the V2X Sidelink semi-persistent scheduling.
  • the sending unit sends, by using the X2 interface, a message carrying the V2X sublink Sidelink resource information to each target base station connected to the base station, including:
  • the sending unit sends a load information message carrying V2X Sidelink resource information to each target base station through the X2 port.
  • the V2X Sidelink resource information includes: a source cell identifier and a target cell identifier, and further includes: V2X resource pool information corresponding to the scheduling mode and/or periodic time-frequency resource information of the V2X Sidelink semi-persistent scheduling;
  • the periodic time-frequency resource information of the V2X Sidelink semi-persistent scheduling includes time domain start time, period, and frequency domain resource indication information of resources used by the V2X Sidelink semi-persistent scheduling;
  • the source cell is a cell corresponding to the source base station
  • the target cell is a cell corresponding to the target base station.
  • the source base station indicates its V2X Sidelink resource information to each base station connected to the source base station through the X2 interface (the communication interface between the base stations), so that When the base station connected to the source base station allocates the V2X Sidelink resource to the edge user in the mode3 mode, the V2X Sidelink resource of the source base station is considered to effectively reduce the secondary link interference in the cell edge region between the intra-frequency cells, and improve the performance of the cell edge user.
  • the source base station notifies the V2X resource pool information corresponding to the scheduling mode and the periodic time-frequency resource information of the V2X Sidelink semi-persistent scheduling to the base stations connected thereto, so that Each base station connected to the source base station considers the V2X Sidelink resource under the same frequency carrier according to the resource information used by the source base station mode3 mode (including the V2X resource pool information corresponding to the scheduling mode and the periodic time-frequency resource information of the V2X Sidelink semi-persistent scheduling).
  • the mode 3 mode scheduling policy effectively reduces the co-channel interference generated by the UE under different eNBs using the mode3 mode for V2X Sidelink communication.
  • V2X network resource indication method and the base station provided by the present invention add V2X Sidelink resource information by adding an X2 port message (V2X Sidelink resource indication message) or an original load information (LOAD INFORMATION) message of the X2 port.
  • V2X Sidelink Resource Info Information Element is used to carry V2X Sidelink resource information of the source base station.
  • FIG. 1 is a scenario of a mode 3 mode UE transmitting a V2X service in the same carrier in the prior art
  • FIG. 2 is a flowchart of a V2X network resource information indication method according to a first embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a base station according to a second embodiment of the present invention.
  • this embodiment discloses a V2X network resource information indication method, which may include the following steps 201 and 202:
  • the source base station determines whether the resource used in the mode3 mode corresponding to the scheduling mode changes. If yes, step 202 is performed; otherwise, no action is performed.
  • the source base station sends, by using an X2 interface, a message carrying the V2X sublink Sidelink resource information to each target base station connected to the source base station, so that the target base stations are based on the V2X Sidelink resource information in the mode3 mode.
  • the resources are allocated to the edge users to implement interference coordination of V2X Sidelink communication.
  • each target base station before receiving a new message carrying V2X Sidelink resource information, each target base station considers that the current V2X Sidelink resource information is valid.
  • the source base station indicates its V2X Sidelink resource information to each base station connected to the source base station through the X2 interface (the communication interface between the base stations), so as to connect the source base stations.
  • the V2X Sidelink resource of the source base station is allocated to the edge user
  • the V2X Sidelink resource allocated by the edge user is avoided by the base station to avoid the V2X Sidelink resource indicated by the source base station, thereby effectively reducing the source base station and each connected thereto.
  • the probability that the edge users of the base station are allocated to the same resource effectively reduces the secondary link interference in the cell edge region between the intra-frequency cells and improves the performance of the cell edge user.
  • the source base station determines whether the resource used in the mode3 mode corresponding to the scheduling mode changes in step 201, and may include the following two points:
  • the source base station determines whether the V2X resource pool corresponding to the scheduling mode changes.
  • the source base station determines whether the V2X resource pool corresponding to the scheduling mode needs to be adjusted based on the load information. If it is determined that the adjustment needs to be performed, the resource used by the mode3 mode corresponding to the scheduling mode changes.
  • the source base station determines whether the periodic time-frequency resource of the V2X Sidelink semi-persistent scheduling changes.
  • the source base station determines whether to use the periodic V2X service initiated by the user equipment UE, and the source base station determines, according to the preset policy, whether to use the V2X Sidelink semi-persistent scheduling mode to initiate a periodic V2X service allocation period initiated by the UE.
  • the time-frequency resource is used to determine whether the periodic time-frequency resource of the V2X Sidelink semi-persistent scheduling changes; if the periodic service initiated by the user equipment UE is received, and the source base station decides to adopt the V2X Sidelink semi-persistent scheduling mode based on the preset policy.
  • the periodic V2X service-initiated periodic time-frequency resource is used to indicate that the resource used by the mode3 mode corresponding to the scheduling mode changes.
  • the preset policy can be used in the prior art, and is not detailed in this embodiment.
  • the load information includes: the number of user equipments served by the base station (abbreviated as the amount of users) and the traffic peak information, wherein the traffic peak information may be determined based on the historical traffic records.
  • the base station pre-plans a V2X resource pool in the mode3 mode corresponding to the scheduling mode, but as the load changes, for example, the user volume increases or the current traffic peak, the base station needs to increase the V2X resource pool, and the specific adjustment is performed.
  • the amount can be executed based on a preset adjustment strategy. This embodiment is not described here again; for example, if the amount of users is reduced or is not currently a traffic peak, the base station needs to adjust the V2X resource pool.
  • the specific adjustment amount may be performed based on a preset adjustment policy, which is not described in this embodiment.
  • the source base station sends a message carrying the V2X sub-link Sidelink resource information to each target base station connected to the source base station through the X2 port, including:
  • the source base station determines that the V2X resource pool corresponding to the scheduling mode needs to be adjusted based on the load information, and/or the source base station receives the periodic V2X service initiated by the user equipment UE, and the source base station determines to adopt the V2X based on the preset policy.
  • the sidelink semi-persistent scheduling mode allocates a periodic time-frequency resource to the periodic V2X service initiated by the UE, and the source base station sends a message carrying the V2X Sidelink resource information to each target connected to the source base station through the X2 port.
  • the V2X Sidelink resource information includes: V2X resource pool information corresponding to the scheduling mode and/or periodic time-frequency resource information of the V2X Sidelink semi-persistent scheduling.
  • the source base station notifies the base station connected to the V2X resource pool information corresponding to the scheduling mode and the periodic time-frequency resource information of the V2X Sidelink semi-persistent scheduling, so that each base station connected to the source base station is configured according to
  • the resource information used by the source base station mode3 mode (including the V2X resource pool information corresponding to the scheduling mode and the periodic time-frequency resource information of the V2X Sidelink semi-persistent scheduling) considers the scheduling strategy of the V2X Sidelink resource in the mode3 mode on the same frequency carrier, effectively The same-frequency interference generated by the UE under different eNBs using the mode3 mode for V2X Sidelink communication is reduced.
  • the source base station sends a message carrying the V2X sublink Sidelink information to each target base station connected to the source base station through the X2 port, which includes the following two methods:
  • Manner 1 The source base station sends a V2X Sidelink resource indication message carrying V2X Sidelink resource information to each target base station connected to the source base station through the X2 port.
  • the V2X Sidelink resource indication message is a message sent by the X2 port added in the embodiment, and the V2X Sidelink resource indication message includes a V2X Sidelink Resource Info Information Element (V2X Sidelink Resource Info Information Element). There is the V2X Sidelink resource information.
  • Manner 2 The source base station sends, by using an X2 port, a load information message carrying V2X Sidelink resource information to each target base station connected to the source base station.
  • the LOAD INFORMATION message is a message sent by the original X2 port.
  • a V2X Sidelink Resource Info Information Element (V2X Sidelink Resource Info Information Element) is added to the load information message.
  • the element carries the V2X Sidelink resource information.
  • V2X Sidelink Resource Info Information is added by adding a X2 port message (V2X Sidelink resource indication message) or an original load information (LOAD INFORMATION) message of the X2 port. Element) is used to carry V2X Sidelink resource information of the source base station.
  • the V2X Sidelink resource information in the foregoing embodiment includes: a source cell identifier and a target cell identifier, and further includes: a V2X resource pool information corresponding to the scheduling mode and/or a periodic time of the V2X Sidelink semi-persistent scheduling. Frequency resource information;
  • the periodic time-frequency resource information of the V2X Sidelink semi-persistent scheduling includes time domain start time, period, and frequency domain resource indication information of resources used by the V2X Sidelink semi-persistent scheduling;
  • the source cell is a cell corresponding to the source base station
  • the target cell is a cell corresponding to the target base station.
  • the periodic time-frequency resource information of the V2X Sidelink semi-persistent scheduling may further include the number of times of periodic time-frequency resources, and the number of times of using the periodic time-frequency resources is optional.
  • the V2X Sidelink resource information includes the V2X Sidelink semi-persistent.
  • the scheduled periodic time-frequency resource information is not carried, otherwise the information is not carried.
  • the V2X Sidelink resource indication message and the V2X Sidelink resource information cell of the load information message in the foregoing embodiment may also carry V2X communication frequency information and V2X. Sidelink bandwidth information.
  • this embodiment discloses a base station, which may include the following units: a determining unit 31 and a sending unit 32, and each unit is specifically described as follows:
  • the determining unit 31 is configured to determine whether the resource used in the mode3 mode corresponding to the scheduling mode changes.
  • the transmitting unit 32 is configured to: when the determining unit determines that the resource used in the mode3 mode corresponding to the scheduling mode changes, send a message carrying the V2X sublink Sidelink information to each target connected to the base station through the X2 port.
  • the base station is configured to enable the target base stations to allocate resources to the edge users in the mode3 mode based on the V2X Sidelink resource information, and implement interference coordination of the V2X secondary link Sidelink communication.
  • the base station disclosed in this embodiment can implement the V2X network resource information indicating method flow shown in FIG. 1 . Therefore, the effect and description of the base station in this embodiment can be referred to the method embodiment shown in FIG. 1 , and details are not described herein again. .
  • the determining unit 31 is configured to determine whether a V2X resource pool corresponding to the scheduling mode changes, and whether the periodic time-frequency resource of the V2X Sidelink semi-persistent scheduling changes.
  • the sending unit 32 is configured to: when the determining unit determines, according to the load information, that the V2X resource pool corresponding to the scheduling mode needs to be adjusted, and/or the determining unit receives the user equipment UE, When the periodic V2X service is used to determine the periodic time-frequency resource for the periodic V2X service initiated by the UE by using the V2X Sidelink semi-persistent scheduling mode, the message carrying the V2X Sidelink resource information is sent to the Each target base station;
  • the V2X Sidelink resource information includes: V2X resource pool information corresponding to the scheduling mode and/or periodic time-frequency resource information of the V2X Sidelink semi-persistent scheduling.
  • the sending unit sends a message carrying the V2X sub-link Sidelink resource information to each target base station connected to the base station by using the X2 port, including:
  • the sending unit sends a load information message carrying V2X Sidelink resource information to each target base station through the X2 port.
  • the V2X Sidelink resource information includes: a source cell identifier and a target cell identifier, and further includes: V2X resource pool information corresponding to the scheduling mode and/or periodic time-frequency resource information of the V2X Sidelink semi-persistent scheduling;
  • the periodic time-frequency resource information of the V2X Sidelink semi-persistent scheduling includes time domain start time, period, and frequency domain resource indication information of resources used by the V2X Sidelink semi-persistent scheduling;
  • the source cell is a cell corresponding to the source base station
  • the target cell is a cell corresponding to the target base station.
  • the base station disclosed in the embodiment indicates its V2X Sidelink resource information to each base station connected to the base station through the X2 port (communication interface between base stations), so that each base station connected to the base station gives an edge in mode3 mode.
  • the V2X Sidelink resource of the source base station is considered, which effectively reduces the secondary link interference in the cell edge region between the intra-frequency cells and improves the performance of the cell edge user.
  • the base station disclosed in the embodiment notifies the base station connected to the V2X resource pool information corresponding to the scheduling mode and the periodic time-frequency resource information of the V2X Sidelink semi-persistent scheduling, so that each base station connected to the base station is configured according to
  • the resource information used by the base station mode3 mode (including the V2X resource pool information corresponding to the scheduling mode and the periodic time-frequency resource information of the V2X Sidelink semi-persistent scheduling) considers the scheduling strategy of the V2X Sidelink resource in the mode3 mode on the same frequency carrier, effectively The same-frequency interference generated by the UE under different eNBs using the mode3 mode for V2X Sidelink communication is reduced.
  • the base station disclosed in the embodiment adds a V2X Sidelink resource information cell (V2X Sidelink Resource) by adding an X2 port message (V2X Sidelink resource indication message) or an original load information (LOAD INFORMATION) message of the X2 port. Info Information Element), used to carry V2X Sidelink resource information of the base station.
  • V2X Sidelink Resource V2X Sidelink resource information cell
  • LOAD INFORMATION original load information
  • the units in the embodiment can be combined into one unit, and further, they can be divided into a plurality of sub-units.
  • any combination of the features disclosed in this specification and any process or unit of any method or apparatus so disclosed may be combined in any combination.
  • Each feature disclosed in this specification can be replaced by an alternative feature that provides the same, equivalent, or similar purpose, unless stated otherwise.
  • DSP digital signal processor

Abstract

本发明公开一种V2X网络资源信息指示方法及基站,方法包括:源基站判断调度方式对应的mode3模式所使用的资源是否发生变化;若是,则所述源基站通过X2口将携带有V2X副链路Sidelink资源信息的消息发送给与所述源基站连接的各目标基站,以使所述各目标基站基于V2X Sidelink资源信息,在mode3模式下给边缘用户分配资源,实现V2X Sidelink通信的干扰协调。相比现有技术,本发明的源基站通过X2口将其V2X Sidelink资源信息指示给与其连接的各基站,以使与源基站连接的各基站在mode3模式下给边缘用户分配V2X Sidelink资源时,考虑源基站的V2X Sidelink资源,有效地降低同频小区间小区边缘地区的副链路干扰,提高小区边缘用户性能。

Description

一种V2X网络资源信息指示方法及基站
交叉引用
本申请引用于2016年11月23日提交的专利名称为“一种V2X网络资源信息指示方法及基站”的第2016110470093号中国专利申请,其通过引用被全部并入本申请。
技术领域
本发明涉及通信技术领域,具体涉及一种V2X网络资源信息指示方法及基站。
背景技术
车与外界的信息交换(Vehicle to X,V2X),是未来智能交通运输系统的关键技术。V2X主要研究基于第三代合作伙伴计划(3rd Generation Partnership Project,3GPP)通信协议的车辆数据传输方案。目前在现有报告中V2X应用包括:车与车(Vehicle-to-Vehicle,V2V)、车与路侧基础设施(Vehicle-to-Infrastructure,V2I)、车与行人(Vehicle-to-Pedestrian,V2P)和车与应用服务器(Vehicle-to-Network,V2N)。V2X应用将改善驾驶安全性、减少拥堵和车辆能耗、提高交通效率和车载娱乐信息等。
目前针对V2X的资源分配方式有两种,一种是基站(evolved Node B,eNB)调度方式,另一种是用户设备(User Equipment,UE)自主选择资源方式。其中,基站调度方式与设备间(Device to Device,D2D)直接通信技术的调度方式类似,需要UE进入无线资源控制(Radio Resource Control,RRC)连接状态来传输数据,支持V2X功能的UE向eNB请求发送数据所使用的资源,eNB来调度用在V2X副链路(Sidelink,SL)上的资源。对于UE自主选择资源方式,UE按照一定规则自主地从资源池里面选择资源来传输,V2X Sidelink通信引入了感知机制来降低资源冲突。
基站调度方式对应的mode3模式指基站配置UE所使用的资源池,再由基站根据UE上报的Sidelink BSR通过PDCCH为UE分配所配置的资源池中具体资源位置信息,例如通过下行控制信息(Downlink Control  Information,DCI)指示UE的PC5口(UE之间的通信接口)发送数据所使用的资源的位置信息。
针对V2X的资源分配方式为调度方式对应的mode3模式,图1示出了相同载波下mode3模式UE传输V2X业务的场景,UE1和UE2采用mode3模式发送V2X消息,它们所用的资源由eNB1来分配,故UE1和UE2之间也不会产生干扰。同理,UE3和UE4也不会发生干扰。但是对于UE2和UE3而言,它们分属于不同的eNB,UE2为eNB1的边缘用户,UE3为eNB2的边缘用户,UE2和UE3甚至是在不同的公共陆地移动网络(Public Land Mobile Network,PLMN)下的不同eNB下,可能存在eNB1为UE2分配的资源和eNB2为UE3分配的资源冲突,UE2和UE3之间产生同频小区间Sidelink干扰。
目前3GPP协议没有给出针对上述场景产生的干扰的解决方法。为此,关于同频载波间mode3模式资源分配如何降低干扰成为待解决问题。
发明内容
鉴于上述问题,本发明提出了克服上述问题或者至少部分地解决上述问题的一种V2X网络资源信息指示方法及基站。
为此目的,第一方面,本发明提出一种V2X网络资源信息指示方法,包括:
源基站判断调度方式对应的mode3模式所使用的资源是否发生变化;
若是,则所述源基站通过X2口将携带有V2X副链路Sidelink资源信息的消息发送给与所述源基站连接的各目标基站,以使所述各目标基站基于V2X Sidelink资源信息,在mode3模式下给边缘用户分配资源,实现V2X Sidelink通信的干扰协调。
可选的,所述源基站判断调度方式对应的mode3模式所使用的资源是否发生变化,包括:
所述源基站判断调度方式对应的V2X资源池是否发生变化,以及所述源基站判断V2X Sidelink半持续调度的周期性时频资源是否发生变化。
可选的,所述若是,则所述源基站通过X2口将携带有V2X副链路Sidelink资源信息的消息发送给与所述源基站连接的各目标基站,包括:
若所述源基站基于负载信息,判定调度方式对应的V2X资源池需要 调整,和/或所述源基站接收到用户设备UE发起的周期性V2X业务且所述源基站基于预设策略决定采用V2X Sidelink半持续调度方式为所述UE发起的周期性V2X业务分配周期性时频资源,则所述源基站通过X2口将携带有V2X Sidelink资源信息的消息发送给与所述源基站连接的各目标基站;
其中,所述V2X Sidelink资源信息包括:调度方式对应的V2X资源池信息和/或V2X Sidelink半持续调度的周期性时频资源信息。
可选的,所述源基站通过X2口将携带有V2X副链路Sidelink资源信息的消息发送给与所述源基站连接的各目标基站,包括:
所述源基站通过X2口将携带有V2X Sidelink资源信息的V2X Sidelink资源指示消息发送给与所述源基站连接的各目标基站;
或,所述源基站通过X2口将携带有V2X Sidelink资源信息的负载信息消息发送给与所述源基站连接的各目标基站。
可选的,所述V2X Sidelink资源信息包括:源小区标识和目标小区标识,还包括:调度方式对应的V2X资源池信息和/或V2X Sidelink半持续调度的周期性时频资源信息;
其中,所述V2X Sidelink半持续调度的周期性时频资源信息包括V2X Sidelink半持续调度所使用的资源的时域起始时刻、周期和频域资源指示信息;
其中,所述源小区为所述源基站对应的小区,所述目标小区为所述目标基站对应的小区。
第二方面,本发明还提出一种基站,包括:
判断单元,判断判断调度方式对应的mode3模式所使用的资源是否发生变化;
发送单元,用于在所述判断单元判定调度方式对应的mode3模式所使用的资源发生变化时,通过X2口将携带有V2X副链路Sidelink信息的消息发送给与所述基站连接的各目标基站,以使所述各目标基站基于V2X Sidelink资源信息,在mode3模式下给边缘用户分配资源,实现V2X副链路Sidelink通信的干扰协调。
可选的,所述判断单元,用于:
判断调度方式对应的V2X资源池是否发生变化,以及判断V2X Sidelink半持续调度的周期性时频资源是否发生变化。
可选的,所述发送单元,用于:
在所述判断单元基于负载信息,判定调度方式对应的V2X资源池需要调整时,和/或所述判断单元接收到用户设备UE发起的周期性V2X业务且基于预设策略决定采用V2X Sidelink半持续调度方式为所述UE发起的周期性V2X业务分配周期性时频资源时,通过X2口将携带有V2X Sidelink资源信息的消息发送给所述各目标基站;
其中,所述V2X Sidelink资源信息包括:调度方式对应的V2X资源池信息和/或V2X Sidelink半持续调度的周期性时频资源信息。
可选的,所述发送单元通过X2口将携带有V2X副链路Sidelink资源信息的消息发送给与所述基站连接的各目标基站,包括:
所述发送单元通过X2口将携带有V2X Sidelink资源信息的V2X Sidelink资源指示消息发送给所述各目标基站;
或,所述发送单元通过X2口将携带有V2X Sidelink资源信息的负载信息消息发送给所述各目标基站。
可选的,所述V2X Sidelink资源信息包括:源小区标识和目标小区标识,还包括:调度方式对应的V2X资源池信息和/或V2X Sidelink半持续调度的周期性时频资源信息;
其中,所述V2X Sidelink半持续调度的周期性时频资源信息包括V2X Sidelink半持续调度所使用的资源的时域起始时刻、周期和频域资源指示信息;
其中,所述源小区为所述源基站对应的小区,所述目标小区为所述目标基站对应的小区。
相比于现有技术,本发明提出的V2X网络资源指示方法及基站,源基站通过X2口(基站之间的通信接口)将其V2X Sidelink资源信息指示给与源基站连接的各基站,以使与源基站连接的各基站在mode3模式下给边缘用户分配V2X Sidelink资源时,考虑源基站的V2X Sidelink资源,有效地降低同频小区间小区边缘地区的副链路干扰,提高小区边缘用户性能。
进一步地,本发明提出的V2X网络资源指示方法及基站,源基站将调度方式对应的V2X资源池信息和V2X Sidelink半持续调度的周期性时频资源信息通知给与其连接的各基站,这样,与源基站连接的各基站会根据源基站mode3模式所使用的资源信息(包括调度方式对应的V2X资源池信息和V2X Sidelink半持续调度的周期性时频资源信息)考虑同频载波下V2X Sidelink资源在mode3模式的调度策略,有效地降低了不同eNB下的UE使用mode3模式进行V2X Sidelink通信产生的同频干扰。
进一步地,本发明提出的V2X网络资源指示方法及基站,通过新增X2口消息(V2X Sidelink资源指示消息)或在X2口的原有的负载信息(LOAD INFORMATION)消息中新增V2X Sidelink资源信息信元(V2X Sidelink Resource Info Information Element),用于携带源基站的V2X Sidelink资源信息。
附图说明
图1为现有技术中相同载波下mode3模式UE传输V2X业务的场景;
图2为本发明第一实施例提供的一种V2X网络资源信息指示方法流程图;
图3为本发明第二实施例提供的一种基站结构示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚,下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚地描述,显然,所描述的实施例是本发明一部分实施例,而不是全部的实施例。
如图1所示,本实施例公开V2X网络资源信息指示方法,可包括以下步骤201和202:
201、源基站判断调度方式对应的mode3模式所使用的资源是否发生变化;若是,则执行步骤202;否则不动作。
202、所述源基站通过X2口将携带有V2X副链路Sidelink资源信息的消息发送给与所述源基站连接的各目标基站,以使所述各目标基站基于V2X Sidelink资源信息,在mode3模式下给边缘用户分配资源,实现V2X Sidelink通信的干扰协调。
本实施例中,各目标基站在接收到新的携带有V2X Sidelink资源信息的消息之前,会认为当前的V2X Sidelink资源信息有效。
可见,本实施例提出的V2X网络资源指示方法,源基站通过X2口(基站之间的通信接口)将其V2X Sidelink资源信息指示给与源基站连接的各基站,以使与源基站连接的各基站在mode3模式下给边缘用户分配V2X Sidelink资源时,考虑源基站的V2X Sidelink资源,尽量使边缘用户分配的V2X Sidelink资源规避源基站指示的V2X Sidelink资源,从而有效降低源基站和与其连接的各基站的边缘用户分配到相同的资源的几率,有效地降低同频小区间小区边缘地区的副链路干扰,提高小区边缘用户性能。
在一个具体的例子中,步骤201所述源基站判断调度方式对应的mode3模式所使用的资源是否发生变化,可包括以下两点:
1、所述源基站判断调度方式对应的V2X资源池是否发生变化。
本实施例中,源基站基于负载信息,判断调度方式对应的V2X资源池是否需要调整;若判定需要调整,则说明调度方式对应的mode3模式所使用的资源发生变化。
2、所述源基站判断V2X Sidelink半持续调度的周期性时频资源是否发生变化。
本实施例中,源基站基于是否接收到用户设备UE发起的周期性V2X业务且所述源基站基于预设策略决定是否采用V2X Sidelink半持续调度方式为所述UE发起的周期性V2X业务分配周期性时频资源,判断V2X Sidelink半持续调度的周期性时频资源是否变化;若接收到用户设备UE发起的周期性业务且所述源基站基于预设策略决定采用V2X Sidelink半持续调度方式为所述UE发起的周期性V2X业务分配周期性时频资源,则说明调度方式对应的mode3模式所使用的资源发生变化。其中,预设策略可沿用现有技术中的策略,本实施例不再详述。
本实施例中,负载信息包括:基站服务的用户设备数量(简称用户量)以及交通峰值信息,其中,交通峰值信息可基于历史交通记录来确定。
本实施例中,基站对调度方式对应的mode3模式预先规划一个V2X资源池,但是随着负载的变化,例如用户量增大或当前为交通峰值,则基站需要调大V2X资源池,具体的调整量可基于预设的调整策略来执行, 本实施例不再赘述;又例如用户量减少或当前不为交通峰值,则基站需要调小V2X资源池,具体的调整量可基于预设的调整策略来执行,本实施例不再赘述。
在一个具体的例子中,步骤202所述源基站通过X2口将携带有V2X副链路Sidelink资源信息的消息发送给与所述源基站连接的各目标基站,包括:
若所述源基站基于负载信息,判定调度方式对应的V2X资源池需要调整,和/或所述源基站接收到用户设备UE发起的周期性V2X业务且所述源基站基于预设策略决定采用V2X Sidelink半持续调度方式为所述UE发起的周期性V2X业务分配周期性时频资源,则所述源基站通过X2口将携带有V2X Sidelink资源信息的消息发送给与所述源基站连接的各目标基站;
其中,所述V2X Sidelink资源信息包括:调度方式对应的V2X资源池信息和/或V2X Sidelink半持续调度的周期性时频资源信息。
可见,本实施例中,源基站将调度方式对应的V2X资源池信息和V2X Sidelink半持续调度的周期性时频资源信息通知给与其连接的各基站,这样,与源基站连接的各基站会根据源基站mode3模式所使用的资源信息(包括调度方式对应的V2X资源池信息和V2X Sidelink半持续调度的周期性时频资源信息)考虑同频载波下V2X Sidelink资源在mode3模式的调度策略,有效地降低了不同eNB下的UE使用mode3模式进行V2X Sidelink通信产生的同频干扰。
在一个具体的例子中,步骤202中所述源基站通过X2口将携带有V2X副链路Sidelink信息的消息发送给与所述源基站连接的各目标基站,包括以下两种方式:
方式一:所述源基站通过X2口将携带有V2X Sidelink资源信息的V2X Sidelink资源指示消息发送给与所述源基站连接的各目标基站。
该方式中,V2X Sidelink资源指示消息为本实施例新增的X2口发送的消息,并且V2X Sidelink资源指示消息中包含V2X Sidelink资源信息信元(V2X Sidelink Resource Info Information Element),该信元中携带有所述V2X Sidelink资源信息。
方式二:所述源基站通过X2口将携带有V2X Sidelink资源信息的负载信息消息发送给与所述源基站连接的各目标基站。
该方式中,负载信息(LOAD INFORMATION)消息为原有的X2口发送的消息,本实施例中,在负载信息消息中新增V2X Sidelink资源信息信元(V2X Sidelink Resource Info Information Element),该信元中携带有所述V2X Sidelink资源信息。
可见,本实施例中,通过新增X2口消息(V2X Sidelink资源指示消息)或在X2口的原有的负载信息(LOAD INFORMATION)消息中新增V2X Sidelink资源信息信元(V2X Sidelink Resource Info Information Element),用于携带源基站的V2X Sidelink资源信息。
在一个具体的例子中,以上实施例中所述V2X Sidelink资源信息包括:源小区标识和目标小区标识,还包括:调度方式对应的V2X资源池信息和/或V2X Sidelink半持续调度的周期性时频资源信息;
其中,所述V2X Sidelink半持续调度的周期性时频资源信息包括V2X Sidelink半持续调度所使用的资源的时域起始时刻、周期和频域资源指示信息;
其中,所述源小区为所述源基站对应的小区,所述目标小区为所述目标基站对应的小区。
本实施例中,所述V2X Sidelink半持续调度的周期性时频资源信息还可包括周期性时频资源的使用次数,该周期性时频资源的使用次数为可选项。
本实施例中,对于V2X Sidelink半持续调度的周期性时频资源信息,若源基站当前时刻存在为UE采用半持续调度分配的周期性时频资源,则V2X Sidelink资源信息中包括V2X Sidelink半持续调度的周期性时频资源信息,否则不携带该信息。
本实施例中,当基站使用跨载波调度方式时,以上实施例中所述V2X Sidelink资源指示消息以及所述负载信息消息的V2X Sidelink资源信息信元中还可以携带有V2X通信频点信息以及V2X Sidelink带宽信息。
如图3所示,本实施例公开一种基站,可包括以下单元:判断单元31和发送单元32,各单元具体说明如下:
判断单元31,用于判断调度方式对应的mode3模式所使用的资源是否发生变化。
发送单元32,用于在所述判断单元判定调度方式对应的mode3模式所使用的资源发生变化时,通过X2口将携带有V2X副链路Sidelink信息的消息发送给与所述基站连接的各目标基站,以使所述各目标基站基于V2X Sidelink资源信息,在mode3模式下给边缘用户分配资源,实现V2X副链路Sidelink通信的干扰协调。
本实施例公开的基站,可实现图1所示的V2X网络资源信息指示方法流程,因此,本实施例中的基站的效果及说明可参见图1所示的方法实施例,在此不再赘述。
在一个具体的例子中,所述判断单元31,用于判断调度方式对应的V2X资源池是否发生变化,以及判断V2X Sidelink半持续调度的周期性时频资源是否发生变化。
在一个具体的例子中,所述发送单元32,用于在所述判断单元基于负载信息,判定调度方式对应的V2X资源池需要调整时,和/或所述判断单元接收到用户设备UE发起的周期性V2X业务且基于预设策略决定采用V2X Sidelink半持续调度方式为所述UE发起的周期性V2X业务分配周期性时频资源时,通过X2口将携带有V2X Sidelink资源信息的消息发送给所述各目标基站;
其中,所述V2X Sidelink资源信息包括:调度方式对应的V2X资源池信息和/或V2X Sidelink半持续调度的周期性时频资源信息。
在一个具体的例子中,所述发送单元通过X2口将携带有V2X副链路Sidelink资源信息的消息发送给与所述基站连接的各目标基站,包括:
所述发送单元通过X2口将携带有V2X Sidelink资源信息的V2X Sidelink资源指示消息发送给所述各目标基站;
或,所述发送单元通过X2口将携带有V2X Sidelink资源信息的负载信息消息发送给所述各目标基站。
在一个具体的例子中,所述V2X Sidelink资源信息包括:源小区标识和目标小区标识,还包括:调度方式对应的V2X资源池信息和/或V2X Sidelink半持续调度的周期性时频资源信息;
其中,所述V2X Sidelink半持续调度的周期性时频资源信息包括V2X Sidelink半持续调度所使用的资源的时域起始时刻、周期和频域资源指示信息;
其中,所述源小区为所述源基站对应的小区,所述目标小区为所述目标基站对应的小区。
可见,实施例公开的基站,通过X2口(基站之间的通信接口)将其V2X Sidelink资源信息指示给与该基站连接的各基站,以使与该基站连接的各基站在mode3模式下给边缘用户分配V2X Sidelink资源时,考虑源基站的V2X Sidelink资源,有效地降低同频小区间小区边缘地区的副链路干扰,提高小区边缘用户性能。
进一步地,实施例公开的基站,将调度方式对应的V2X资源池信息和V2X Sidelink半持续调度的周期性时频资源信息通知给与其连接的各基站,这样,与该基站连接的各基站会根据该基站mode3模式所使用的资源信息(包括调度方式对应的V2X资源池信息和V2X Sidelink半持续调度的周期性时频资源信息)考虑同频载波下V2X Sidelink资源在mode3模式的调度策略,有效地降低了不同eNB下的UE使用mode3模式进行V2X Sidelink通信产生的同频干扰。
进一步地,实施例公开的基站,通过新增X2口消息(V2X Sidelink资源指示消息)或在X2口的原有的负载信息(LOAD INFORMATION)消息中新增V2X Sidelink资源信息信元(V2X Sidelink Resource Info Information Element),用于携带该基站的V2X Sidelink资源信息。
本领域技术人员可以理解,可以把实施例中的各单元组合成一个单元,以及此外可以把它们分成多个子单元。除了这样的特征和/或过程或者单元中的至少一些是互相排斥之处,可以采用任何组合对本说明书中公开的所有特征以及如此公开的任何方法或者设备的所有过程或单元进行组合。除非另外明确陈述,本说明书中公开的每个特征可以由提供相同、等同或相似目的的替代特征来代替。
本领域的技术人员能够理解,尽管在此所述的一些实施例包括其它实施例中所包括的某些特征而不是其它特征,但是不同实施例的特征的组合意味着处于本发明的范围之内并且形成不同的实施例。
本领域技术人员可以理解,实施例中的各单元可以以硬件实现,或者以在一个或者多个处理器上运行的软件模块实现,或者以它们的组合实现。本领域的技术人员应当理解,可以在实践中使用微处理器或者数字信号处理器(DSP)来实现根据本发明实施例的一些或者全部部件的一些或者全部功能。本发明还可以实现为用于执行这里所描述的方法的一部分或者全部的设备或者装置程序(例如,计算机程序和计算机程序产品)。
虽然结合附图描述了本发明的实施方式,但是本领域技术人员可以在不脱离本发明的精神和范围的情况下做出各种修改和变型,这样的修改和变型均落入由所附权利要求所限定的范围之内。

Claims (10)

  1. 一种V2X网络资源信息指示方法,其特征在于,包括:
    源基站判断调度方式对应的mode3模式所使用的资源是否发生变化;
    若是,则所述源基站通过X2口将携带有V2X副链路Sidelink资源信息的消息发送给与所述源基站连接的各目标基站,以使所述各目标基站基于V2X Sidelink资源信息,在mode3模式下给边缘用户分配资源,实现V2X Sidelink通信的干扰协调。
  2. 根据权利要求1所述的方法,其特征在于,所述源基站判断调度方式对应的mode3模式所使用的资源是否发生变化,包括:
    所述源基站判断调度方式对应的V2X资源池是否发生变化,以及所述源基站判断V2X Sidelink半持续调度的周期性时频资源是否发生变化。
  3. 根据权利要求2所述的方法,其特征在于,所述若是,则所述源基站通过X2口将携带有V2X副链路Sidelink资源信息的消息发送给与所述源基站连接的各目标基站,包括:
    若所述源基站基于负载信息,判定调度方式对应的V2X资源池需要调整,和/或所述源基站接收到用户设备UE发起的周期性V2X业务且所述源基站基于预设策略决定采用V2X Sidelink半持续调度方式为所述UE发起的周期性V2X业务分配周期性时频资源,则所述源基站通过X2口将携带有V2X Sidelink资源信息的消息发送给与所述源基站连接的各目标基站;
    其中,所述V2X Sidelink资源信息包括:调度方式对应的V2X资源池信息和/或V2X Sidelink半持续调度的周期性时频资源信息。
  4. 根据权利要求1至3任一项所述的方法,其特征在于,所述源基站通过X2口将携带有V2X副链路Sidelink资源信息的消息发送给与所述源基站连接的各目标基站,包括:
    所述源基站通过X2口将携带有V2X Sidelink资源信息的V2X Sidelink资源指示消息发送给与所述源基站连接的各目标基站;
    或,所述源基站通过X2口将携带有V2X Sidelink资源信息的负载信息消息发送给与所述源基站连接的各目标基站。
  5. 根据权利要求4所述的方法,其特征在于,所述V2X Sidelink资 源信息包括:源小区标识和目标小区标识,还包括:调度方式对应的V2X资源池信息和/或V2X Sidelink半持续调度的周期性时频资源信息;
    其中,所述V2X Sidelink半持续调度的周期性时频资源信息包括V2X Sidelink半持续调度所使用的资源的时域起始时刻、周期和频域资源指示信息;
    其中,所述源小区为所述源基站对应的小区,所述目标小区为所述目标基站对应的小区。
  6. 一种基站,其特征在于,包括:
    判断单元,用于判断调度方式对应的mode3模式所使用的资源是否发生变化;
    发送单元,用于在所述判断单元判定调度方式对应的mode3模式所使用的资源发生变化时,通过X2口将携带有V2X副链路Sidelink信息的消息发送给与所述基站连接的各目标基站,以使所述各目标基站基于V2X Sidelink资源信息,在mode3模式下给边缘用户分配资源,实现V2X副链路Sidelink通信的干扰协调。
  7. 根据权利要求6所述的基站,其特征在于,所述判断单元,用于:
    判断调度方式对应的V2X资源池是否发生变化,以及判断V2X Sidelink半持续调度的周期性时频资源是否发生变化。
  8. 根据权利要求7所述的基站,其特征在于,所述发送单元,用于:
    在所述判断单元基于负载信息,判定调度方式对应的V2X资源池需要调整时,和/或所述判断单元接收到用户设备UE发起的周期性V2X业务且基于预设策略决定采用V2X Sidelink半持续调度方式为所述UE发起的周期性V2X业务分配周期性时频资源时,通过X2口将携带有V2X Sidelink资源信息的消息发送给所述各目标基站;
    其中,所述V2X Sidelink资源信息包括:调度方式对应的V2X资源池信息和/或V2X Sidelink半持续调度的周期性时频资源信息。
  9. 根据权利要求6至8任一项所述的基站,其特征在于,所述发送单元通过X2口将携带有V2X副链路Sidelink资源信息的消息发送给与所述基站连接的各目标基站,包括:
    所述发送单元通过X2口将携带有V2X Sidelink资源信息的V2X  Sidelink资源指示消息发送给所述各目标基站;
    或,所述发送单元通过X2口将携带有V2X Sidelink资源信息的负载信息消息发送给所述各目标基站。
  10. 根据权利要求9所述的基站,其特征在于,所述V2X Sidelink资源信息包括:源小区标识和目标小区标识,还包括:调度方式对应的V2X资源池信息和/或V2X Sidelink半持续调度的周期性时频资源信息;
    其中,所述V2X Sidelink半持续调度的周期性时频资源信息包括V2X Sidelink半持续调度所使用的资源的时域起始时刻、周期和频域资源指示信息;
    其中,所述源小区为所述源基站对应的小区,所述目标小区为所述目标基站对应的小区。
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