CN115442766A - V2X resource scheduling method and device, storage medium, user equipment - Google Patents
V2X resource scheduling method and device, storage medium, user equipment Download PDFInfo
- Publication number
- CN115442766A CN115442766A CN202210968145.5A CN202210968145A CN115442766A CN 115442766 A CN115442766 A CN 115442766A CN 202210968145 A CN202210968145 A CN 202210968145A CN 115442766 A CN115442766 A CN 115442766A
- Authority
- CN
- China
- Prior art keywords
- direct link
- resource
- selection information
- direct
- downlink signaling
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
-
- 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
- H04W72/1273—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of downlink data flows
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/535—Allocation or scheduling criteria for wireless resources based on resource usage policies
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/14—Direct-mode setup
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
技术领域technical field
本发明涉及通信技术领域,尤其涉及一种V2X资源调度方法及装置、存储介质、用户设备。The present invention relates to the field of communication technologies, and in particular to a V2X resource scheduling method and device, a storage medium, and user equipment.
背景技术Background technique
在通信标准协议版本12(Release 12)中,长期演进(Long Term Evolution,LTE)系统引入了直接通信(Direct Communication)。多个用户设备(User Equipment,UE)之间可以通过PC5接口进行直接通信。PC5接口即为UE之间的直接接口。现有技术中存在两种模式的资源分配方式,一种是调度资源分配方式(scheduled resource allocation),这是由基站通过专用信令配置;一种是自动资源选择方式(autonomous resource selection),基站可以通过系统消息或无线资源控制(Radio Resource Control,RRC)信令为UE提供用于直接通信的资源池,UE从资源池中选择用于直接通信的资源。如果传输的UE(TransmitterUE)不在网络覆盖范围内,UE采用自动资源选择方式从预先配置的资源池中选择用于直接通信的资源。In the communication standard protocol version 12 (Release 12), the Long Term Evolution (Long Term Evolution, LTE) system introduces direct communication (Direct Communication). Multiple user equipments (User Equipment, UEs) can communicate directly through the PC5 interface. The PC5 interface is a direct interface between UEs. There are two modes of resource allocation in the prior art, one is scheduled resource allocation, which is configured by the base station through dedicated signaling; the other is automatic resource selection (autonomous resource selection), the base station A resource pool for direct communication may be provided to the UE through system messages or radio resource control (Radio Resource Control, RRC) signaling, and the UE selects resources for direct communication from the resource pool. If the transmitting UE (Transmitter UE) is not within the coverage of the network, the UE selects resources for direct communication from a pre-configured resource pool in an automatic resource selection manner.
现有技术中,基于直接通信,第三代合作伙伴计划(3rd Generation PartnershipProject,3GPP)也支持车联网(Vehicle-to-Everything,V2X)。而3GPP正在研究在新无线(New Radio,NR)系统中引入V2X。因为5G系统能够提供更大的带宽、更低的时延,可以更好的满足V2X的业务需求。In the prior art, based on direct communication, the 3rd Generation Partnership Project (3rd Generation Partnership Project, 3GPP) also supports Vehicle-to-Everything (V2X). The 3GPP is studying the introduction of V2X into a new radio (New Radio, NR) system. Because the 5G system can provide greater bandwidth and lower latency, it can better meet the business needs of V2X.
在NR V2X中,基本上延续了LTE中的资源分配方式,如引入模式1(mode1):基站为UE调度用于V2X数据的传输资源;模式2(mode 2):UE确定V2X数据的传输资源,UE基于网络配置的资源池或者预配置的资源池选择传输资源。当UE需要采用mode 1时,UE需要处于RRC连接状态,基站可以通过RRC信令或者下行控制信令(Downlink Control Information,DCI)为UE调度用于V2X数据的传输资源,UE收到调度资源之后,在调度资源适用的时隙,通过PC5接口向Rx UE(Receive UE,接收UE)发送V2X数据。在Mode 1中,一个Tx UE可能同时向多个UE传输V2X数据,此时Tx UE与多个UE同时建立了直接链路的单播通道。Tx UE可以将这些直接链路的链路质量信息提供给基站,以便基站可以合理的调度Tx UE的传输资源以适应不同直接链路的信道状况。In NR V2X, the resource allocation method in LTE is basically continued, such as the introduction of mode 1 (mode1): the base station schedules transmission resources for V2X data for UE; mode 2 (mode 2): UE determines the transmission resources of V2X data , the UE selects a transmission resource based on a resource pool configured by the network or a preconfigured resource pool. When the UE needs to adopt mode 1, the UE needs to be in the RRC connection state, and the base station can schedule transmission resources for V2X data for the UE through RRC signaling or downlink control signaling (Downlink Control Information, DCI). After receiving the scheduling resources, the UE , sending V2X data to the Rx UE (Receive UE, receiving UE) through the PC5 interface in the time slot where the scheduling resource is applicable. In Mode 1, a Tx UE may transmit V2X data to multiple UEs at the same time. At this time, the Tx UE and multiple UEs simultaneously establish unicast channels of direct links. The Tx UE can provide the link quality information of these direct links to the base station, so that the base station can reasonably schedule the transmission resources of the Tx UE to adapt to channel conditions of different direct links.
但是,在mode 1中,对于基站为UE调度的用于V2X数据的传输资源,UE自主决定资源应用的接收UE(即Rx UE),可能导致Tx UE将不合适的传输资源应用于某个接收UE,引发传输失败。However, in mode 1, for the transmission resource for V2X data scheduled by the base station for the UE, the UE independently decides the receiving UE (that is, the Rx UE) for resource application, which may cause the Tx UE to apply inappropriate transmission resources to a receiving UE. UE, causing transmission failure.
发明内容Contents of the invention
本发明解决的技术问题是如何提升V2X调度资源的利用效率,以提升V2X传输效率。The technical problem solved by the present invention is how to improve the utilization efficiency of V2X scheduling resources, so as to improve the V2X transmission efficiency.
为解决上述技术问题,本发明实施例提供一种V2X资源调度方法,V2X资源调度方法包括:接收来自基站的下行信令,所述下行信令能够指示资源选择信息;至少根据所述资源选择信息确定用于至少一个直接链路的直接链路传输资源。In order to solve the above technical problems, an embodiment of the present invention provides a V2X resource scheduling method, the V2X resource scheduling method includes: receiving downlink signaling from a base station, the downlink signaling can indicate resource selection information; at least according to the resource selection information Direct link transmission resources for at least one direct link are determined.
可选的,所述资源选择信息包括直接链路传输资源对应的调制编码参数,所述根据所述资源选择信息确定用于至少一个直接链路的直接链路传输资源包括:根据第一映射关系以及各个直接链路的链路质量确定各个直接链路对应的调制编码参数,所述第一映射关系包括多个链路质量值以及与所述多个链路质量值对应的多个调制编码参数;如果存在直接链路对应的调制编码参数与所述资源选择信息中的调制编码参数相一致,则将所述下行信令指示的直接链路传输资源用于所述直接链路的数据传输。Optionally, the resource selection information includes modulation and coding parameters corresponding to direct link transmission resources, and determining the direct link transmission resource for at least one direct link according to the resource selection information includes: according to the first mapping relationship And the link quality of each direct link determines the modulation and coding parameters corresponding to each direct link, the first mapping relationship includes multiple link quality values and multiple modulation and coding parameters corresponding to the multiple link quality values ; if there is a modulation and coding parameter corresponding to the direct link that is consistent with the modulation and coding parameter in the resource selection information, use the direct link transmission resource indicated by the downlink signaling for the data transmission of the direct link.
可选的,所述调制编码参数为调制编码阶数。Optionally, the modulation and coding parameter is a modulation and coding order.
可选的,所述资源选择信息包括直接链路传输资源所应用的目的设备的索引,所述根据所述资源选择信息确定用于至少一个直接链路的直接链路传输资源包括:根据第二映射关系以及所述目的设备的索引确定目的设备,所述第二映射关系包括多个目的设备的索引及其对应的多个目的设备;确定与所述目的设备关联的直接链路;将所述下行信令指示的直接链路传输资源用于所述关联的直接链路。Optionally, the resource selection information includes an index of a destination device to which the direct link transmission resource is applied, and determining the direct link transmission resource for at least one direct link according to the resource selection information includes: according to the second The mapping relationship and the index of the destination device determine the destination device, and the second mapping relationship includes multiple destination device indexes and corresponding multiple destination devices; determining a direct link associated with the destination device; The direct link transmission resource indicated by the downlink signaling is used for the associated direct link.
可选的,所述资源选择信息包括加扰所述下行信令所采用的RNTI,所述根据所述资源选择信息确定用于至少一个直接链路的直接链路传输资源包括:采用不同的RNTI解码所述下行信令,并确定成功解调所述下行信令所采用的第一RNTI;根据所述第一RNTI以及各个RNTI与直接链路的对应关系确定目的直接链路;将所述下行信令指示的直接链路传输资源用于所述目的直接链路。Optionally, the resource selection information includes the RNTI used for scrambling the downlink signaling, and the determining the direct link transmission resources for at least one direct link according to the resource selection information includes: using different RNTIs Decoding the downlink signaling, and determining the first RNTI used to successfully demodulate the downlink signaling; determining the destination direct link according to the first RNTI and the correspondence between each RNTI and the direct link; The direct link transmission resource indicated by the signaling is used for the target direct link.
可选的,所述资源选择信息包含直接链路传输资源的应用时域位置,所述根据所述资源选择信息确定用于至少一个直接链路的直接链路传输资源包括:确定通用调制编码参数以及各个直接链路的链路质量;确定各个直接链路传输资源的实际应用时域位置;如果确定第一直接链路适用除所述通用调制编码参数之外的调制编码参数,则将实际应用时域位置与所述应用时域位置一致的直接链路传输资源用于所述第一直接链路。Optionally, the resource selection information includes the application time domain position of the direct link transmission resource, and the determining the direct link transmission resource for at least one direct link according to the resource selection information includes: determining a general modulation and coding parameter And the link quality of each direct link; determine the actual application time domain position of each direct link transmission resource; if it is determined that the first direct link is applicable to modulation and coding parameters other than the general modulation and coding parameters, the actual application A direct link transmission resource whose time domain position is consistent with the application time domain position is used for the first direct link.
可选的,所述根据所述资源选择信息确定用于至少一个直接链路的直接链路传输资源包括:确定通用RNTI,通用调制编码参数以及各个直接链路的链路质量;如果确定第二直接链路适用除所述通用调制编码参数之外的调制编码参数,则将采用除通用RNTI之外的其他RNTI解调得到的下行信令指示的直接链路传输资源用于所述第二直接链路。Optionally, the determining the direct link transmission resource for at least one direct link according to the resource selection information includes: determining a general RNTI, a general modulation and coding parameter, and link quality of each direct link; if the second If the direct link is applicable to modulation and coding parameters other than the general modulation and coding parameters, the direct link transmission resources indicated by the downlink signaling obtained by demodulating other RNTIs than the general RNTI are used for the second direct link link.
可选的,所述至少根据所述资源选择信息确定用于至少一个直接链路的直接链路传输资源包括:根据所述资源选择信息以及所述至少一个直接链路的链路质量确定适用所述下行信令指示的直接链路传输资源的第一直接链路;如果适用于同一直接链路传输资源的所述第一直接链路的数量为多个,则根据所述至少一个直接链路所传输的V2X数据的服务质量要求,从多个第一直接链路中确定适用于所述同一直接链路传输资源的最终直接链路。Optionally, the determining at least one direct link transmission resource for at least one direct link according to the resource selection information includes: determining the applicable resource according to the resource selection information and the link quality of the at least one direct link. The first direct link of the direct link transmission resource indicated by the downlink signaling; if the number of the first direct link applicable to the same direct link transmission resource is multiple, according to the at least one direct link The QoS requirement of the transmitted V2X data is to determine the final direct link applicable to the transmission resource of the same direct link from the plurality of first direct links.
可选的,所述直接链路传输资源为服务基站调度的半静态直接链路传输资源或动态直接链路传输资源。Optionally, the direct link transmission resources are semi-static direct link transmission resources or dynamic direct link transmission resources scheduled by the serving base station.
为解决上述技术问题,本发明实施例还公开了一种V2X资源调度装置,V2X资源调度装置包括:下行信令接收模块,适于接收来自基站的下行信令,所述下行信令能够指示资源选择信息;资源调度模块,适于至少根据所述资源选择信息确定用于至少一个直接链路的直接链路传输资源。In order to solve the above technical problems, the embodiment of the present invention also discloses a V2X resource scheduling device. The V2X resource scheduling device includes: a downlink signaling receiving module, adapted to receive downlink signaling from a base station, and the downlink signaling can indicate resource selection information; a resource scheduling module adapted to determine direct link transmission resources for at least one direct link based at least on said resource selection information.
本发明实施例还公开了一种存储介质,其上存储有计算机指令,所述计算机指令运行时执行所述V2X资源调度方法的步骤。The embodiment of the present invention also discloses a storage medium on which computer instructions are stored, and the steps of the V2X resource scheduling method are executed when the computer instructions are run.
本发明实施例还公开了一种用户设备,包括存储器和处理器,所述存储器上存储有可在所述处理器上运行的计算机指令,所述处理器运行所述计算机指令时执行所述V2X资源调度方法的步骤。The embodiment of the present invention also discloses a user equipment, including a memory and a processor, the memory stores computer instructions that can run on the processor, and the processor executes the V2X when running the computer instructions. The steps of the resource scheduling method.
与现有技术相比,本发明实施例的技术方案具有以下有益效果:Compared with the prior art, the technical solutions of the embodiments of the present invention have the following beneficial effects:
本发明技术方案接收来自基站的下行信令,所述下行信令能够指示资源选择信息;至少根据所述资源选择信息确定用于至少一个直接链路的直接链路传输资源。本发明技术方案中,基站可以通过下行信令直接指示或者间接指示资源选择信息,用户设备通过来自基站的下行信令可以确定资源选择信息;用户设备可以至少根据所述资源选择信息来确定用于直接链路的直接链路传输资源,从而避免仅由用户设备自主确定直接链路的直接链路传输资源导致的传输失败等问题,保证用于直接链路的传输资源确定的合适性,进而提升V2X的传输效率。The technical solution of the present invention receives downlink signaling from a base station, where the downlink signaling can indicate resource selection information; and determines direct link transmission resources for at least one direct link at least according to the resource selection information. In the technical solution of the present invention, the base station can directly or indirectly indicate resource selection information through downlink signaling, and the user equipment can determine resource selection information through downlink signaling from the base station; the user equipment can determine the resource selection information based on at least the resource selection information The direct link transmission resource of the direct link, so as to avoid the transmission failure caused by only the direct link transmission resource of the direct link being independently determined by the user equipment, and ensure the suitability of the transmission resource determination for the direct link, thereby improving V2X transmission efficiency.
进一步地,所述资源选择信息包括直接链路传输资源对应的调制编码参数,或者所述资源选择信息包括直接链路传输资源所应用的目的设备的索引,或者,所述资源选择信息包括加扰所述下行信令所采用的RNTI。本发明技术方案中,资源选择信息包括调制编码参数或目的设备的索引时,资源选择信息可以承载在下行信令中发送给用户设备,用户设备可以直接从下行信令中获取资源选择信息;资源选择信息包括加扰所述下行信令所采用的RNTI时,用户设备需要通过尝试解调下行信令才能获得资源选择信息,从而保证资源选择信息发送和接收的灵活性。Further, the resource selection information includes modulation and coding parameters corresponding to the direct link transmission resources, or the resource selection information includes an index of the destination device to which the direct link transmission resources are applied, or the resource selection information includes scrambling The RNTI used in the downlink signaling. In the technical solution of the present invention, when the resource selection information includes modulation and coding parameters or the index of the destination device, the resource selection information can be carried in the downlink signaling and sent to the user equipment, and the user equipment can directly obtain the resource selection information from the downlink signaling; When the selection information includes the RNTI used for scrambling the downlink signaling, the user equipment needs to try to demodulate the downlink signaling to obtain the resource selection information, so as to ensure the flexibility of sending and receiving the resource selection information.
附图说明Description of drawings
图1是本发明实施例一种V2X资源调度方法的流程图;FIG. 1 is a flowchart of a V2X resource scheduling method according to an embodiment of the present invention;
图2是图1所示步骤S102的一种具体实施方式的流程图;FIG. 2 is a flowchart of a specific implementation of step S102 shown in FIG. 1;
图3是图1所示步骤S102的另一种具体实施方式的流程图;FIG. 3 is a flow chart of another specific embodiment of step S102 shown in FIG. 1;
图4是图1所示步骤S102的又一种具体实施方式的流程图;FIG. 4 is a flow chart of another specific embodiment of step S102 shown in FIG. 1;
图5是图1所示步骤S102的再一种具体实施方式的流程图;FIG. 5 is a flow chart of yet another specific embodiment of step S102 shown in FIG. 1;
图6是图1所示步骤S102的再一种具体实施方式的流程图;FIG. 6 is a flow chart of yet another specific embodiment of step S102 shown in FIG. 1;
图7是本发明实施例一种V2X资源调度装置的结构示意图。Fig. 7 is a schematic structural diagram of a V2X resource scheduling device according to an embodiment of the present invention.
具体实施方式detailed description
如背景技术中所述,在NR V2X mode 1中,对于服务基站为UE调度的用于V2X数据的传输资源,UE自主决定资源应用的接收UE(即Rx UE),可能导致Tx UE将不合适的传输资源应用于某个接收UE,引发传输失败。As mentioned in the background, in NR V2X mode 1, for the transmission resource for V2X data scheduled by the serving base station for the UE, the UE independently decides the receiving UE (ie Rx UE) for the resource application, which may cause the Tx UE to be unsuitable The transmission resource of is applied to a certain receiving UE, causing transmission failure.
本发明技术方案中,基站可以通过下行信令直接指示或者间接指示资源选择信息,用户设备通过来自基站的下行信令可以确定资源选择信息;用户设备可以至少根据所述资源选择信息来确定用于直接链路的直接链路传输资源,从而避免仅由用户设备自主确定直接链路的直接链路传输资源导致的传输失败等问题,保证用于直接链路的传输资源确定的合适性,进而提升V2X的传输效率。In the technical solution of the present invention, the base station can directly or indirectly indicate resource selection information through downlink signaling, and the user equipment can determine resource selection information through downlink signaling from the base station; the user equipment can determine the resource selection information based on at least the resource selection information The direct link transmission resource of the direct link, so as to avoid the transmission failure caused by only the direct link transmission resource of the direct link being independently determined by the user equipment, and ensure the suitability of the transmission resource determination for the direct link, thereby improving V2X transmission efficiency.
为使本发明的上述目的、特征和优点能够更为明显易懂,下面结合附图对本发明的具体实施例做详细的说明。In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
图1是本发明实施例一种V2X资源调度方法的流程图。FIG. 1 is a flowchart of a V2X resource scheduling method according to an embodiment of the present invention.
所述V2X资源调度方法可以用于用户设备侧。具体而言,可以由用户设备执行图1所示的各个步骤,例如可以是发送用户设备,也即发送V2X数据的用户设备执行图1所示的各个步骤。The V2X resource scheduling method can be used on the user equipment side. Specifically, the various steps shown in FIG. 1 may be performed by the user equipment, for example, the sending user equipment, that is, the user equipment that sends V2X data may perform the various steps shown in FIG. 1 .
如图1所示,V2X资源调度方法可以包括以下步骤:As shown in Figure 1, the V2X resource scheduling method may include the following steps:
步骤S101:接收来自基站的下行信令,所述下行信令能够指示资源选择信息;Step S101: receiving downlink signaling from the base station, where the downlink signaling can indicate resource selection information;
步骤S102:至少根据所述资源选择信息确定用于至少一个直接链路的直接链路传输资源。Step S102: Determine direct link transmission resources for at least one direct link according to at least the resource selection information.
需要指出的是,本实施例中各个步骤的序号并不代表对各个步骤的执行顺序的限定。It should be noted that the sequence numbers of the steps in this embodiment do not represent a limitation on the execution order of the steps.
可以理解的是,在具体实施中,所述V2X资源调度方法可以采用软件程序的方式实现,该软件程序运行于芯片或芯片模组内部集成的处理器中。该方法也可以采用软件结合硬件的方式实现,本申请不作限制。It can be understood that, in a specific implementation, the V2X resource scheduling method may be implemented in the form of a software program, and the software program runs in a processor integrated in a chip or a chip module. The method may also be implemented by combining software with hardware, which is not limited in this application.
本发明中所称基站(或服务基站)是指Tx UE与之建立RRC连接的基站,对于Tx UE来说,只会接收服务基站的下行信令,因此本发明中的基站是指Tx UE的服务基站。The base station (or serving base station) in the present invention refers to the base station with which the Tx UE establishes an RRC connection. For the Tx UE, it will only receive the downlink signaling of the serving base station, so the base station in the present invention refers to the Tx UE's service base.
本实施例中的用户设备(包括发送用户设备和接收用户设备)为支持NR V2X业务的用户设备。所述接收用户设备是指接收V2X数据的用户设备。同一个用户设备可以既是发送用户设备,也是接收用户设备,如两个用户设备执行双向的V2X数据传输,此时每一个用户设备既是发送用户设备,也是接收用户设备。The user equipment (including sending user equipment and receiving user equipment) in this embodiment is a user equipment supporting NR V2X services. The receiving user equipment refers to a user equipment that receives V2X data. The same user equipment can be both a sending user equipment and a receiving user equipment. For example, two user equipments perform two-way V2X data transmission. At this time, each user equipment is both a sending user equipment and a receiving user equipment.
在一个具体的场景中,Tx UE可以向多个接收UE(Rx UE)传输V2X业务(V2Xservice),如在频率F1上:向UE1传输V2X service 1,将Tx UE与UE1之间的直接链路称为SL1(即SL index为SL 1);向UE2传输V2X service 2和service 3,将Tx UE与UE2之间的直接链路称为SL2;向UE3传输V2Xservice 4,将Tx UE与UE3之间的直接链路称为SL3。在频率F2上:向UE4传输V2X service 5,将Tx UE与UE4之间的直接链路称为SL4。服务基站可以配置直接链路对应的SL index,或者Tx UE向服务基站指示不同直接链路对应的SL index。In a specific scenario, the Tx UE can transmit V2X services (V2Xservice) to multiple receiving UEs (Rx UEs), for example, on frequency F1: transmit V2X service 1 to UE1, and connect the direct link between Tx UE and UE1 It is called SL1 (that is, the SL index is SL 1); transmit V2X service 2 and service 3 to UE2, and call the direct link between Tx UE and UE2 SL2; transmit V2Xservice 4 to UE3, and link Tx between UE and UE3 The direct link is called SL3. On frequency F2: V2X service 5 is transmitted to UE4, and the direct link between Tx UE and UE4 is called SL4. The serving base station may configure the SL index corresponding to the direct link, or the Tx UE may indicate to the serving base station the SL index corresponding to different direct links.
Tx UE可以测量得到各个直接链路(也即SL1、SL2、SL3和SL4)的链路质量,或者由Rx UE测量得到各个直接链路的链路质量并发送给Tx UE,本发明实施例对此不作限制。The Tx UE can measure the link quality of each direct link (that is, SL1, SL2, SL3, and SL4), or the Rx UE can measure the link quality of each direct link and send it to the Tx UE. This is not limited.
Tx UE可以将各个直接链路或部分直接链路的链路质量上报给服务基站。服务基站可以依据Tx UE当前所建立的直接链路的链路质量分配合适的传输资源,配置合适的调制编码方式(Modulation and Coding Scheme,MCS),然后向Tx UE发送DCI指示直接链路传输资源。Tx UE向不同接收UE开展的V2X业务,可以全部采用mode 1的方式,即直接链路传输资源均由服务基站调度;或者可以部分采用mode 1的方式,其余部分采用mode 2的方式,如在频率F1上的直接链路传输资源均由服务基站调度,在频率F2上的直接链路传输资源均由该UE采用自动资源选择模式确定传输资源。Tx UE可以确定哪些直接链路的传输资源由服务基站调度,哪些直接链路的传输资源由UE自动资源选择确定传输资源;或者服务基站指定哪些直接链路的传输资源由服务基站调度,本专利对此不作限定。Tx UE通常只需要上报采用mode 1的直接链路的链路质量。The Tx UE may report the link quality of each direct link or part of direct links to the serving base station. The serving base station can allocate appropriate transmission resources according to the link quality of the direct link currently established by the Tx UE, configure an appropriate modulation and coding scheme (Modulation and Coding Scheme, MCS), and then send DCI to indicate the direct link transmission resources to the Tx UE . The V2X services carried out by the Tx UE to different receiving UEs can all adopt the mode 1 method, that is, the direct link transmission resources are all scheduled by the serving base station; or the mode 1 method can be used partly, and the mode 2 method is used for the rest. All direct link transmission resources on frequency F1 are scheduled by the serving base station, and all direct link transmission resources on frequency F2 are determined by the UE in an automatic resource selection mode. Tx UE can determine which direct link transmission resources are scheduled by the serving base station, which direct link transmission resources are determined by UE automatic resource selection; or which direct link transmission resources are designated by the serving base station to be scheduled by the serving base station. This patent There is no limit to this. Tx UE usually only needs to report the link quality of the direct link using mode 1.
在步骤S101的具体实施中,服务基站可以发送下行信令至用户设备,用户设备可以接收下行信令,下行信令能够直接或间接地指示资源选择信息。具体而言,所述下行信令可以是RRC信令,也可以是DCI。资源选择信息可以直接承载于所述下行信令中,例如,下行信令中包括资源选择信息;也可以间接承载于所述下行信令中,例如,加扰所述下行信令的无线网络临时标识(Radio Network Temporary Identity,RNTI)为资源选择信息。In the specific implementation of step S101, the serving base station can send downlink signaling to the user equipment, and the user equipment can receive the downlink signaling, which can directly or indirectly indicate resource selection information. Specifically, the downlink signaling may be RRC signaling or DCI. The resource selection information may be carried directly in the downlink signaling, for example, the downlink signaling includes the resource selection information; it may also be carried indirectly in the downlink signaling, for example, the wireless network temporarily scrambling the downlink signaling The Radio Network Temporary Identity (RNTI) is resource selection information.
在具体实施中,资源选择信息可以直接指示直接链路传输资源适用的直接链路。例如,DCI中包含调度信息SL grant1,DCI中还可以指示直接链路SL1(也即直接链路索引SLindex),那么UE可以将调度信息SL grant1调度的直接链路传输资源用于直接链路SL1。In a specific implementation, the resource selection information may directly indicate the direct link to which the direct link transmission resource is applicable. For example, the DCI contains the scheduling information SL grant1, and the DCI may also indicate the direct link SL1 (that is, the direct link index SLindex), then the UE can use the direct link transmission resources scheduled by the scheduling information SL grant1 for the direct link SL1 .
在步骤S102的具体实施中,用户设备可以根据所述资源选择信息,或者可以结合资源选择信息以及至少一个直接链路的链路质量确定用于所述至少一个直接链路的直接链路传输资源。In the specific implementation of step S102, the user equipment may determine the direct link transmission resource for the at least one direct link according to the resource selection information, or in combination with the resource selection information and the link quality of the at least one direct link .
具体地,资源选择信息也可以指示直接链路传输资源适用的链路质量值,换言之,资源选择信息可以指示直接链路传输资源与链路质量值的对应关系。更具体地,资源选择信息可以是所述下行信令指示的直接链路传输资源适用的链路质量值。由此,用户设备可以通过资源选择信息和直接链路的链路质量确定适用于直接链路的直接链路传输资源。Specifically, the resource selection information may also indicate the link quality value applicable to the direct link transmission resource. In other words, the resource selection information may indicate the correspondence between the direct link transmission resource and the link quality value. More specifically, the resource selection information may be a link quality value applicable to the direct link transmission resources indicated by the downlink signaling. Thus, the user equipment can determine the direct link transmission resources applicable to the direct link through the resource selection information and the link quality of the direct link.
本发明实施例中,基站可以通过下行信令直接指示或者间接指示资源选择信息,用户设备通过来自基站的下行信令可以确定资源选择信息;用户设备可以至少根据所述资源选择信息来确定用于直接链路的直接链路传输资源,从而避免仅由用户设备自主确定直接链路的直接链路传输资源导致的传输失败等问题,保证用于直接链路的传输资源确定的合适性,进而提升V2X的传输效率。In this embodiment of the present invention, the base station may directly or indirectly indicate resource selection information through downlink signaling, and the user equipment may determine resource selection information through downlink signaling from the base station; the user equipment may determine the resource selection information based on at least the resource selection information. The direct link transmission resource of the direct link, so as to avoid the transmission failure caused by only the direct link transmission resource of the direct link being independently determined by the user equipment, and ensure the suitability of the transmission resource determination for the direct link, thereby improving V2X transmission efficiency.
在一个具体的实施例中,所述直接链路传输资源可以为基站调度的半静态直接链路传输资源或动态直接链路传输资源。对于处于连接态的传输用户设备,服务基站可以通过RRC信令为该用户设备配置半静态直接链路传输资源,如配置半静态直接链路传输资源的周期、起始时隙、所占用的频域资源等信息;服务基站也可以通过DCI调度动态的直接链路传输资源,每次DCI指示一次直接链路传输资源;服务基站还可以通过RRC信令和DCI结合的方式为传输用户设备分配半静态直接链路传输资源,如RRC信令配置半静态直接链路传输资源的周期,DCI指示第一次直接链路传输资源的起始时隙、所占用的频域资源,之后按照周期重复。In a specific embodiment, the direct link transmission resources may be semi-static direct link transmission resources or dynamic direct link transmission resources scheduled by the base station. For the transmission user equipment in the connected state, the serving base station can configure semi-static direct link transmission resources for the user equipment through RRC signaling, such as configuring the period of the semi-static direct link transmission resources, the starting time slot, and the occupied frequency Domain resources and other information; the serving base station can also schedule dynamic direct link transmission resources through DCI, and each DCI indicates a direct link transmission resource; the serving base station can also allocate half of the transmission user equipment through the combination of RRC signaling and DCI Static direct link transmission resources, such as the cycle of semi-static direct link transmission resources configured by RRC signaling, DCI indicates the starting time slot of the first direct link transmission resources and the occupied frequency domain resources, and then repeats according to the cycle.
本发明一个非限制性的实施例中,所述资源选择信息包括直接链路传输资源对应的调制编码参数。请参照图2,图1所示步骤S102可以包括以下步骤:In a non-limiting embodiment of the present invention, the resource selection information includes modulation and coding parameters corresponding to direct link transmission resources. Referring to FIG. 2, step S102 shown in FIG. 1 may include the following steps:
步骤S201:根据第一映射关系以及各个直接链路的链路质量确定各个直接链路对应的调制编码参数,所述第一映射关系包括多个链路质量值以及与所述多个链路质量值对应的多个调制编码参数;Step S201: Determine the modulation and coding parameters corresponding to each direct link according to the first mapping relationship and the link quality of each direct link, where the first mapping relationship includes a plurality of link quality values and links with the plurality of link quality values A plurality of modulation and encoding parameters corresponding to the value;
步骤S202:如果存在直接链路对应的调制编码参数与所述资源选择信息中的调制编码参数相一致,则将所述下行信令指示的直接链路传输资源用于所述直接链路的数据传输。Step S202: If there is a modulation and coding parameter corresponding to the direct link that is consistent with the modulation and coding parameter in the resource selection information, use the direct link transmission resource indicated by the downlink signaling for the data of the direct link transmission.
本实施例中所称调制编码参数可以是MCS。也就是说,基站在下行信令中承载MCS。The modulation and coding parameters referred to in this embodiment may be MCS. That is to say, the base station bears the MCS in downlink signaling.
在一个具体的实施例中,所述调制编码参数可以为调制编码阶数,例如可以是表示正交相移键控(Quadrature Phase Shift Keying,QPSK)、16正交振幅调制(QuadratureAmplitude Modulation)、64QAM等。In a specific embodiment, the modulation and coding parameter may be a modulation and coding order, for example, it may represent quadrature phase shift keying (Quadrature Phase Shift Keying, QPSK), 16 quadrature amplitude modulation (Quadrature Amplitude Modulation), 64QAM Wait.
具体实施中,第一映射关系可以是由基站预先配置的,例如基站预先通过RRC信令将第一映射关系发送给Tx UE。或者,第一映射关系可以是由通信标准协议预先约定。In a specific implementation, the first mapping relationship may be pre-configured by the base station, for example, the base station sends the first mapping relationship to the Tx UE in advance through RRC signaling. Alternatively, the first mapping relationship may be pre-agreed by a communication standard protocol.
具体可参照表1,表1所示为第一映射关系,所述第一映射关系包括多个链路质量值以及与所述多个链路质量值对应的多个调制编码参数。For details, refer to Table 1. Table 1 shows a first mapping relationship, where the first mapping relationship includes multiple link quality values and multiple modulation and coding parameters corresponding to the multiple link quality values.
表1Table 1
其中,链路质量值越高表示直接链路的质量越高。Wherein, a higher link quality value indicates a higher quality of the direct link.
需要说明的是,关于第一映射关系也可以是其他任意可实施的链路质量值与MCS的对应关系,本发明实施例对此不作限制。It should be noted that the first mapping relationship may also be any other practicable correspondence relationship between the link quality value and the MCS, which is not limited in this embodiment of the present invention.
本发明一个具体实施例中,所述链路质量采用信道质量指示(Channel QualityIndicator,CQI)来表示。In a specific embodiment of the present invention, the link quality is represented by a channel quality indicator (Channel Quality Indicator, CQI).
在一个具体的应用场景中,Tx UE依据其上报的各个直接链路的CQI,以及DCI中指示的直接链路传输资源所采用的MCS,确定MCS对应的CQI(Tx UE可以通过查找表1得到MCS对应的SL CQI)是否与所上报的直接链路的CQI一致,如果一致,则将该传输资源应用于该直接链路。以直接链路SL1和直接链路SL2为例,如果基站获知SL1的CQI是7,SL2 CQI为10,基站向Tx UE发送了两个DCI,分别对应两次直接链路传输资源的分配,其中一个DCI指示MCS是16QAM,另一个DCI指示MCS是64QAM。Tx UE收到两个DCI之后,依据每个直接链路的CQI,确定SL1适用于16QAM对应的直接链路传输资源(即将指示16QAM的直接链路传输资源应用于SL1),SL2适用于64QAM对应的直接链路传输资源。In a specific application scenario, the Tx UE determines the CQI corresponding to the MCS according to the CQI of each direct link reported by it and the MCS used by the direct link transmission resources indicated in the DCI (the Tx UE can obtain by looking up Table 1 Whether the SL CQI corresponding to the MCS is consistent with the reported CQI of the direct link, and if they are consistent, the transmission resource is applied to the direct link. Taking direct link SL1 and direct link SL2 as an example, if the base station learns that the CQI of SL1 is 7 and the CQI of SL2 is 10, the base station sends two DCIs to the Tx UE, corresponding to two allocations of direct link transmission resources, where One DCI indicates that the MCS is 16QAM and the other DCI indicates that the MCS is 64QAM. After the Tx UE receives two DCIs, it determines that SL1 is applicable to the direct link transmission resource corresponding to 16QAM according to the CQI of each direct link (that is, the direct link transmission resource indicating 16QAM is applied to SL1), and SL2 is applicable to the corresponding direct link transmission resource of 64QAM. direct link transmission resources.
本发明一个优选实施例中,图1所示步骤S102可以包括以下步骤:根据所述资源选择信息以及所述至少一个直接链路的链路质量确定适用所述下行信令指示的直接链路传输资源的第一直接链路;如果适用于同一直接链路传输资源的所述第一直接链路的数量为多个,则根据所述至少一个直接链路所传输的V2X数据的服务质量要求,从多个第一直接链路中确定适用于所述同一直接链路传输资源的最终直接链路。In a preferred embodiment of the present invention, step S102 shown in FIG. 1 may include the following steps: determine the direct link transmission indicated by the downlink signaling according to the resource selection information and the link quality of the at least one direct link The first direct link of the resource; if the number of the first direct link applicable to the same direct link transmission resource is multiple, according to the quality of service requirement of the V2X data transmitted by the at least one direct link, A final direct link applicable to the same direct link transmission resource is determined from the plurality of first direct links.
本实施例中,不同V2X业务可以有不同的服务质量要求(Quality of Service,QoS),或者有相同的服务质量需求。具体而言,不同的QoS要求可以采用优先级、传输时延、传输误比特率等参数来表示。由此,如果根据资源选择信息以及所述至少一个直接链路的链路质量确定适用于同一直接链路传输资源的所述第一直接链路的数量为多个,则可以根据所述至少一个直接链路所传输的V2X数据的服务质量要求确定最终直接链路。In this embodiment, different V2X services may have different service quality requirements (Quality of Service, QoS), or have the same service quality requirements. Specifically, different QoS requirements can be represented by parameters such as priority, transmission delay, and transmission bit error rate. Therefore, if it is determined according to the resource selection information and the link quality of the at least one direct link that there are multiple first direct links applicable to the same direct link transmission resource, then the at least one The quality of service requirements for the V2X data transmitted by the direct link determine the final direct link.
在本发明实施例一个具体的应用场景中,可能多个直接链路均可以应用相同的MCS,此时Tx UE可以结合V2X业务的其他QoS参数,如时延等,从多个直接链路中选择一个进行V2X传输。例如,直接链路SL2、SL3的CQI均指示可以采用64QAM进行直接链路传输,当TxUE收到的直接链路传输资源采用64QAM时,即DCI中指示在该直接链路传输资源上应用64QAM的调制编码方式,Tx UE再结合所缓存(buffer)的直接链路SL2、SL3上传输的V2X数据时延,确定优先选择哪一个进行传输,如果直接链路SL2上传输的数据的时延要求更紧迫,则可以将该传输资源用于传输直接链路SL2上的V2X数据,以避免其时延超过设定的门限。In a specific application scenario of the embodiment of the present invention, the same MCS may be applied to multiple direct links. At this time, the Tx UE can combine other QoS parameters of the V2X service, such as delay, etc., from multiple direct links. Choose one for V2X transmission. For example, the CQIs of the direct links SL2 and SL3 both indicate that 64QAM can be used for direct link transmission. When the direct link transmission resource received by the TxUE uses 64QAM, that is, the DCI indicates that 64QAM is applied to the direct link transmission resource. In the modulation and coding mode, the Tx UE combines the cached (buffer) V2X data delays transmitted on the direct links SL2 and SL3 to determine which one is preferred for transmission. If the delay of the data transmitted on the direct link SL2 requires a higher If it is urgent, the transmission resource can be used to transmit the V2X data on the direct link SL2, so as to avoid its delay exceeding the set threshold.
本发明一个非限制性的实施例中,所述资源选择信息包括直接链路传输资源所应用的目的设备的索引。请参照图3,图1所示步骤S102可以包括以下步骤:In a non-limiting embodiment of the present invention, the resource selection information includes an index of a destination device to which the direct link transmission resource is applied. Referring to FIG. 3, step S102 shown in FIG. 1 may include the following steps:
步骤S301:根据第二映射关系以及所述目的设备的索引确定目的设备,所述第二映射关系包括多个目的设备的索引及其对应的多个目的设备;Step S301: Determine the destination device according to the second mapping relationship and the index of the destination device, the second mapping relationship includes multiple destination device indexes and corresponding multiple destination devices;
步骤S302:确定与所述目的设备关联的直接链路;Step S302: Determine a direct link associated with the destination device;
步骤S303:将所述下行信令指示的直接链路传输资源用于所述关联的直接链路。Step S303: Use the direct link transmission resource indicated by the downlink signaling for the associated direct link.
由于目的设备(destination)的标识可能很大,例如24比特,将其通过下行信令,如DCI来指示将会增大信令开销。因此,本实施例中,基站可以在下行信令,如DCI或RRC信令中指示具体的目的设备(destination)的索引。Since the identifier of the destination device (destination) may be very large, for example, 24 bits, indicating it through downlink signaling, such as DCI, will increase signaling overhead. Therefore, in this embodiment, the base station may indicate a specific index of a destination device (destination) in downlink signaling, such as DCI or RRC signaling.
例如,UE1的index为00,UE2的index为01,UE3的index为10,UE4的index为11,这样下行信令中只需要指示2比特的信息,节省了信令开销。For example, the index of UE1 is 00, the index of UE2 is 01, the index of UE3 is 10, and the index of UE4 is 11. In this way, only 2 bits of information need to be indicated in downlink signaling, which saves signaling overhead.
具体实施中,第二映射关系可以是由基站预先配置的,例如基站预先通过RRC信令将第二映射关系发送给Tx UE。或者,第二映射关系可以是由通信标准协议预先约定,如依据UE标识号依次排序设置各自的index,本发明实施例对此不作限制。In a specific implementation, the second mapping relationship may be preconfigured by the base station, for example, the base station sends the second mapping relationship to the Tx UE in advance through RRC signaling. Alternatively, the second mapping relationship may be pre-agreed by a communication standard protocol, such as setting respective indexes in sequence according to UE identification numbers, which is not limited in this embodiment of the present invention.
本发明一个非限制性的实施例中,所述资源选择信息包括直接链路传输资源所应用的直接链路索引(SL Index),图1所示步骤S102可以包括以下步骤:根据所述直接链路索引以及第三映射关系确定直接链路,所述第三映射关系包括多个直接链路索引及其对应的多个直接链路;将所述下行信令指示的直接链路传输资源用于所述确定的直接链路。In a non-limiting embodiment of the present invention, the resource selection information includes a direct link index (SL Index) applied to direct link transmission resources, and step S102 shown in FIG. 1 may include the following steps: according to the direct link A direct link is determined by a road index and a third mapping relationship, where the third mapping relationship includes multiple direct link indexes and multiple direct links corresponding thereto; using the direct link transmission resources indicated by the downlink signaling for The identified direct link.
本实施例中,第三映射关系可以是由基站预先配置的,例如基站预先通过RRC信令将第三映射关系发送给Tx UE。或者,第二映射关系可以是由Tx UE设置,然后通过RRC信令发送给基站。In this embodiment, the third mapping relationship may be preconfigured by the base station, for example, the base station sends the third mapping relationship to the Tx UE in advance through RRC signaling. Alternatively, the second mapping relationship may be set by the Tx UE, and then sent to the base station through RRC signaling.
例如,SL index为SL 1对应频率F1上Tx UE与UE1之间的直接链路,SL index为SL2对应频率F1上Tx UE与UE2之间的直接链路等。For example, SL index is the direct link between Tx UE and UE1 on frequency F1 corresponding to SL 1, and SL index is the direct link between Tx UE and UE2 on frequency F1 corresponding to SL2, etc.
本发明一个非限制性的实施例中,所述资源选择信息包括加扰所述下行信令所采用的RNTI,请参照图4,图1所示步骤S102可以包括以下步骤:In a non-limiting embodiment of the present invention, the resource selection information includes the RNTI used for scrambling the downlink signaling, please refer to FIG. 4, step S102 shown in FIG. 1 may include the following steps:
步骤S401:采用不同的RNTI解码所述下行信令,并确定成功解调所述下行信令所采用的第一RNTI;Step S401: Decode the downlink signaling by using different RNTIs, and determine the first RNTI used to successfully demodulate the downlink signaling;
步骤S402:根据所述第一RNTI以及各个RNTI与直接链路的对应关系确定目的直接链路;Step S402: Determine the destination direct link according to the first RNTI and the corresponding relationship between each RNTI and the direct link;
步骤S403:将所述下行信令指示的直接链路传输资源用于所述目的直接链路。Step S403: Use the direct link transmission resource indicated by the downlink signaling for the target direct link.
本实施例中,服务基站可以预先为Tx UE分配针对不同destination的RNTI、或者为Tx UE分配针对不同直接链路Index的RNTI。服务基站发送的DCI均由RNTI加扰。In this embodiment, the serving base station may pre-allocate RNTIs for different destinations to the Tx UE, or allocate RNTIs for different direct link indexes to the Tx UE. The DCI sent by the serving base station is all scrambled by the RNTI.
在一个具体的应用场景中,基站发送的DCI均由RNTI加扰,可以为不同的destination分配不同的RNTI。例如,针对UE1(也即直接链路SL1)的直接链路传输资源的调度(即SL Grant),采用RNTI1加扰;针对UE2(也即直接链路SL2)的直接链路传输资源的调度采用RNTI2加扰;针对UE3(也即直接链路SL3)的直接链路传输资源的调度采用RNTI3加扰。In a specific application scenario, the DCI sent by the base station is scrambled by the RNTI, and different RNTIs can be assigned to different destinations. For example, RNTI1 scrambling is used for the scheduling of direct link transmission resources (that is, SL Grant) of UE1 (that is, direct link SL1); the scheduling of direct link transmission resources for UE2 (that is, direct link SL2) uses RNTI2 scrambling; RNTI3 scrambling is used for scheduling the direct link transmission resources of UE3 (that is, the direct link SL3).
Tx UE在接收基站通过DCI下发的SL Grant时,采用不同的RNTI解码该DCI,即可获知该SL Grant所调度的直接链路传输资源用于哪个目的设备,也即可以确定该SL Grant所调度的直接链路传输资源用于哪个直接链路。When the Tx UE receives the SL Grant issued by the base station through the DCI, it uses different RNTIs to decode the DCI, and then it can know which destination device the direct link transmission resources scheduled by the SL Grant are used for, that is, it can determine the For which direct link the scheduled direct link transmission resources are used.
本发明一个非限制性的实施例中,所述资源选择信息包含直接链路传输资源的应用时域位置,请参照图5,图1所示步骤S102可以包括以下步骤:In a non-limiting embodiment of the present invention, the resource selection information includes the application time domain position of the direct link transmission resource, please refer to FIG. 5, step S102 shown in FIG. 1 may include the following steps:
步骤S501:确定通用调制编码参数以及各个直接链路的链路质量;Step S501: Determine general modulation and coding parameters and link quality of each direct link;
步骤S502:确定各个直接链路传输资源的实际应用时域位置;Step S502: Determine the actual application time domain position of each direct link transmission resource;
步骤S503:如果确定第一直接链路适用除所述通用调制编码参数之外的调制编码参数,则将实际应用时域位置与所述应用时域位置一致的直接链路传输资源用于所述第一直接链路。Step S503: If it is determined that the first direct link is applicable to modulation and coding parameters other than the general modulation and coding parameters, use the direct link transmission resource whose actual application time domain position is consistent with the application time domain position for the First direct link.
本实施例中,可以确定部分直接链路所适用的直接链路传输资源。所述部分直接链路可以是指第一直接链路,也即适用除所述通用调制编码参数之外的调制编码参数的直接链路。通用调制编码参数是指直接链路默认采用的MCS。In this embodiment, direct link transmission resources applicable to some direct links may be determined. The partial direct link may refer to a first direct link, that is, a direct link to which modulation and coding parameters other than the general modulation and coding parameters are applicable. The general modulation and coding parameters refer to the default MCS adopted by the direct link.
可以理解的是,通用调制编码参数可以是由基站配置给用户设备的,也可以是由通信标准协议约定的。It can be understood that the general modulation and coding parameters may be configured by the base station to the user equipment, or may be stipulated by a communication standard protocol.
在本发明一个具体的应用场景中,直接链路默认采用的MCS为16QAM。如果Tx UE上报直接链路SL0可以采用64QAM的CQI,基站提前通过RRC信令为该UE配置SL0的传输资源所应用的时域位置,具体可以是传输时隙参数,以便Tx UE收到SL grant时能够将应用所述时域位置的grant调度的直接链路传输资源应用于直接链路SL0。例如,基站获知直接链路SL3的CQI适用64QAM,基站通过RRC信令指示Tx UE将MCS为64QAM的传输资源用于直接链路SL3,且仅限于特定的传输时隙。Tx UE收到基站下发的DCI指示的SL Grant,DCI可能指示该SLGrant所应用的时隙,或者SL grant的应用时隙与所述DCI所在的时隙有协议预设的时间间隔(如间隔为1个时隙),Tx UE可以获知该SL grant所调度的传输资源实际应用时域位置,也即应用的时隙,如果该时隙属于前述基站所指示的特定的传输时隙,则Tx UE确定将该SLgrant所调度的传输资源用于直接链路SL3。In a specific application scenario of the present invention, the default MCS adopted by the direct link is 16QAM. If the Tx UE reports the direct link SL0 can use 64QAM CQI, the base station configures the time domain position for the UE through RRC signaling in advance, which can be the transmission time slot parameter, so that the Tx UE can receive the SL grant In this case, the direct link transmission resource scheduled by applying the grant of the time domain position can be applied to the direct link SL0. For example, the base station knows that the CQI of the direct link SL3 is applicable to 64QAM, and the base station instructs the Tx UE to use the transmission resource with the MCS of 64QAM for the direct link SL3 through RRC signaling, and only in a specific transmission time slot. The Tx UE receives the SL Grant indicated by the DCI issued by the base station. The DCI may indicate the time slot to which the SL Grant is applied, or there is a protocol-preset time interval between the time slot for which the SL Grant is applied and the time slot where the DCI is located (such as interval is 1 time slot), the Tx UE can know the actual application time domain position of the transmission resource scheduled by the SL grant, that is, the applied time slot, if the time slot belongs to the specific transmission time slot indicated by the aforementioned base station, then Tx The UE determines to use the transmission resource scheduled by the SLgrant for the direct link SL3.
本发明一个非限制性的实施例中,请参照图6,图1所示步骤S102可以包括以下步骤:In a non-limiting embodiment of the present invention, please refer to FIG. 6, step S102 shown in FIG. 1 may include the following steps:
步骤S601:确定通用RNTI,通用调制编码参数以及各个直接链路的链路质量;Step S601: Determine the general RNTI, general modulation and coding parameters and the link quality of each direct link;
步骤S602:如果确定第二直接链路适用除所述通用调制编码参数之外的调制编码参数,则将采用除通用RNTI之外的其他RNTI解调得到的下行信令指示的直接链路传输资源用于所述第二直接链路。Step S602: If it is determined that the second direct link is applicable to modulation and coding parameters other than the general modulation and coding parameters, use the direct link transmission resources indicated by the downlink signaling obtained by demodulating other RNTIs except the general RNTI for the second direct link.
与前述实施例不同的是,本发明实施例是根据加扰下行信令的RNTI确定部分直接链路所适用的直接链路传输资源。所述部分直接链路可以是指第二直接链路,也即适用除所述通用调制编码参数之外的调制编码参数的直接链路。通用调制编码参数是指直接链路默认采用的MCS。Different from the foregoing embodiments, in the embodiment of the present invention, the direct link transmission resources applicable to some direct links are determined according to the RNTI of the scrambled downlink signaling. The partial direct link may refer to a second direct link, that is, a direct link to which modulation and coding parameters other than the general modulation and coding parameters are applicable. The general modulation and coding parameters refer to the default MCS adopted by the direct link.
在本发明一个具体的应用场景中,直接链路默认采用的MCS为16QAM。基站获知直接链路SL3的CQI适用64QAM,基站针对直接链路SL3的调度采用特殊的RNTI(SpecialRNTI),而对于其他SL grant的调度采用通用RNTI,例如SL C-RNTI。此时调度信息可以不指示MCS。Tx UE收到特殊RNTI加扰的DCI,获知其指示的直接链路传输资源,将其用于能够使用64QAM的直接链路SL3。当Tx UE收到SL C-RNTI加扰的DCI,获知其指示的直接链路传输资源,可以将其用于其它直接链路。进一步而言,Tx UE还可以结合V2X业务的QoS确定将SLgrant所调度的传输资源用于哪个直接链路。In a specific application scenario of the present invention, the default MCS adopted by the direct link is 16QAM. The base station knows that the CQI of the direct link SL3 is applicable to 64QAM, and the base station uses a special RNTI (Special RNTI) for the scheduling of the direct link SL3, and uses a general RNTI, such as SL C-RNTI, for the scheduling of other SL grants. At this time, the scheduling information may not indicate the MCS. The Tx UE receives the DCI scrambled by the special RNTI, learns the direct link transmission resource indicated by it, and uses it for the direct link SL3 that can use 64QAM. When the Tx UE receives the DCI scrambled by the SL C-RNTI, it knows the direct link transmission resource indicated by it, and can use it for other direct links. Furthermore, the Tx UE may also determine which direct link to use the transmission resource scheduled by the SLgrant in conjunction with the QoS of the V2X service.
请参照图7,本发明实施例还公开了一种V2X资源调度装置70,V2X资源调度装置70可以包括下行信令接收模块701和资源调度模块702。Referring to FIG. 7 , the embodiment of the present invention also discloses a V2X
其中,下行信令接收模块701适于接收来自基站的下行信令,所述下行信令能够指示资源选择信息;资源调度模块702适于至少根据所述资源选择信息确定用于至少一个直接链路的直接链路传输资源。Wherein, the downlink signaling receiving
本发明实施例中,基站可以通过下行信令直接指示或者间接指示资源选择信息,用户设备通过来自基站的下行信令可以确定资源选择信息;用户设备可以至少根据所述资源选择信息来确定用于直接链路的直接链路传输资源,从而避免仅由用户设备自主确定直接链路的直接链路传输资源导致的传输失败等问题,保证用于直接链路的传输资源确定的合适性,进而提升V2X的传输效率。In this embodiment of the present invention, the base station may directly or indirectly indicate resource selection information through downlink signaling, and the user equipment may determine resource selection information through downlink signaling from the base station; the user equipment may determine the resource selection information based on at least the resource selection information. The direct link transmission resource of the direct link, so as to avoid the transmission failure caused by only the direct link transmission resource of the direct link being independently determined by the user equipment, and ensure the suitability of the transmission resource determination for the direct link, thereby improving Transmission efficiency of V2X.
关于所述V2X资源调度装置70的工作原理、工作方式的更多内容,可以参照图1至图6中的相关描述,这里不再赘述。For more details about the working principle and working mode of the V2X
本发明实施例还公开了一种存储介质,其上存储有计算机指令,所述计算机指令运行时可以执行图1至图6中所示方法的步骤。所述存储介质可以包括ROM、RAM、磁盘或光盘等。所述存储介质还可以包括非挥发性存储器(non-volatile)或者非瞬态(non-transitory)存储器等。The embodiment of the present invention also discloses a storage medium on which computer instructions are stored, and the steps of the methods shown in FIGS. 1 to 6 can be executed when the computer instructions are run. The storage medium may include ROM, RAM, magnetic or optical disks, and the like. The storage medium may also include a non-volatile memory (non-volatile) or a non-transitory (non-transitory) memory, and the like.
本发明实施例还公开了一种用户设备,所述用户设备可以包括存储器和处理器,所述存储器上存储有可在所述处理器上运行的计算机指令。所述处理器运行所述计算机指令时可以执行图1至图6中所示方法的步骤。所述用户设备包括但不限于手机、计算机、平板电脑等用户设备。The embodiment of the present invention also discloses a user equipment. The user equipment may include a memory and a processor, and the memory stores computer instructions operable on the processor. The processor may execute the steps of the methods shown in FIG. 1 to FIG. 6 when executing the computer instructions. The user equipment includes but is not limited to user equipment such as mobile phones, computers, and tablet computers.
虽然本发明披露如上,但本发明并非限定于此。任何本领域技术人员,在不脱离本发明的精神和范围内,均可作各种更动与修改,因此本发明的保护范围应当以权利要求所限定的范围为准。Although the present invention is disclosed above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so the protection scope of the present invention should be based on the scope defined in the claims.
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202210968145.5A CN115442766B (en) | 2019-03-28 | V2X resource scheduling method and device, storage medium, and user equipment |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202210968145.5A CN115442766B (en) | 2019-03-28 | V2X resource scheduling method and device, storage medium, and user equipment | |
CN201910243713.3A CN111294755B (en) | 2019-03-28 | 2019-03-28 | V2X resource scheduling method and device, storage medium and user equipment |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201910243713.3A Division CN111294755B (en) | 2019-03-28 | 2019-03-28 | V2X resource scheduling method and device, storage medium and user equipment |
Publications (2)
Publication Number | Publication Date |
---|---|
CN115442766A true CN115442766A (en) | 2022-12-06 |
CN115442766B CN115442766B (en) | 2025-07-01 |
Family
ID=
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016191986A1 (en) * | 2015-05-29 | 2016-12-08 | 华为技术有限公司 | Data processing method and device |
CN107852728A (en) * | 2015-08-13 | 2018-03-27 | 株式会社Ntt都科摩 | Control device, user's set, wireless resource allocation methods and communication means |
WO2018084524A1 (en) * | 2016-11-02 | 2018-05-11 | 엘지전자(주) | Method for performing sidelink transmission in wireless communication system and apparatus therefor |
CN110972316A (en) * | 2018-09-28 | 2020-04-07 | 普天信息技术有限公司 | Transmission resource scheduling method for V2X terminal |
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016191986A1 (en) * | 2015-05-29 | 2016-12-08 | 华为技术有限公司 | Data processing method and device |
CN107852728A (en) * | 2015-08-13 | 2018-03-27 | 株式会社Ntt都科摩 | Control device, user's set, wireless resource allocation methods and communication means |
WO2018084524A1 (en) * | 2016-11-02 | 2018-05-11 | 엘지전자(주) | Method for performing sidelink transmission in wireless communication system and apparatus therefor |
CN110972316A (en) * | 2018-09-28 | 2020-04-07 | 普天信息技术有限公司 | Transmission resource scheduling method for V2X terminal |
Non-Patent Citations (1)
Title |
---|
QUALCOMM INCORPORATED: "Sidelink Resource Allocation Mechanism for NR V2X", 《3GPP TSG RAN WG1 MEETING #94BIS R1-1811263》, 29 September 2018 (2018-09-29), pages 1 - 9 * |
Also Published As
Publication number | Publication date |
---|---|
CN111294755B (en) | 2023-04-18 |
CN116744257A (en) | 2023-09-12 |
CN111294755A (en) | 2020-06-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9894654B2 (en) | Defining sub-subchannels for data communication using separately provided frequency and time resources and related wireless terminals and network nodes | |
US10070417B2 (en) | Transmission of device-to-device (D2D) control data from a first D2D device to a second D2D device in a cellular communication system | |
JP6494639B2 (en) | Uplink transmission for dual connection | |
JP5452705B2 (en) | Configuration of transmission of periodic feedback information in a physical uplink shared channel (PUSCH) | |
JP6521406B2 (en) | Data transmission method and apparatus | |
CN102264131B (en) | Method and device for transmitting data in wireless network | |
CN111756495A (en) | A hybrid automatic repeat request HARQ feedback control method and related equipment | |
KR101727232B1 (en) | Allocation of communication resources | |
US9698936B2 (en) | Configuration method, system and device for uplink channel | |
CN105612799B (en) | A kind of resource allocation method, user's direct connection communication means and device | |
KR20160040197A (en) | Infrastructure equipment, wireless communications network and method | |
CN105474589A (en) | Communications terminal and method | |
CN113079570B (en) | Transmission method and device | |
CN110383914B (en) | Information sending method, device, terminal, access network equipment and system | |
CN111294755B (en) | V2X resource scheduling method and device, storage medium and user equipment | |
CN111294144B (en) | Method and device for reporting channel quality of direct link, storage medium and user equipment | |
WO2019200507A1 (en) | Control of d2d duplication | |
CN115442766B (en) | V2X resource scheduling method and device, storage medium, and user equipment | |
CN111294754B (en) | Uplink transmission method and device based on direct link resources and storage medium | |
CN108631901A (en) | A kind of information transferring method, processing method and processing device | |
JP5681255B2 (en) | Configuration of transmission of periodic feedback information in a physical uplink shared channel (PUSCH) | |
KR20120013187A (en) | Control Information Exchange Method for Efficient Radio Resource Management |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant |