WO2020113774A1 - 一种v2x单播通信方法、终端设备和系统 - Google Patents

一种v2x单播通信方法、终端设备和系统 Download PDF

Info

Publication number
WO2020113774A1
WO2020113774A1 PCT/CN2019/071429 CN2019071429W WO2020113774A1 WO 2020113774 A1 WO2020113774 A1 WO 2020113774A1 CN 2019071429 W CN2019071429 W CN 2019071429W WO 2020113774 A1 WO2020113774 A1 WO 2020113774A1
Authority
WO
WIPO (PCT)
Prior art keywords
terminal
sending
resource location
information
receiving terminal
Prior art date
Application number
PCT/CN2019/071429
Other languages
English (en)
French (fr)
Inventor
焦慧颖
Original Assignee
中国信息通信研究院
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中国信息通信研究院 filed Critical 中国信息通信研究院
Publication of WO2020113774A1 publication Critical patent/WO2020113774A1/zh

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • 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]

Definitions

  • This application relates to the field of mobile communications, and in particular, to a V2X unicast communication method, terminal device, and system.
  • the sender In unicast communication, the sender needs to send different data to multiple terminals simultaneously, similar to the downlink of a cellular system. Therefore, in the process of direct communication of unicast mobile terminals, how to establish reliable many-to-many unicast communication between multiple mobile terminals is a technical problem that needs to be solved.
  • An embodiment of the present application proposes a V2X unicast communication method to implement communication between a sending terminal and a receiving terminal, including the following steps:
  • the sending terminal sends indication information at the first resource location, indicating that the pilot signal exists
  • the sending terminal sends the pilot signal at the second resource location
  • the receiving terminal receives the pilot signal according to the instruction information
  • the receiving terminal measures the pilot signal, generates channel state information, and sends it at the fourth resource location;
  • the receiving terminal sends scheduling information at the third resource location to indicate the fourth resource location;
  • the sending terminal receives the channel state information according to the scheduling information, and determines a modulation and coding scheme.
  • the location of the second resource is fixed.
  • the third resource location is also used for scheduling information of service data of the sending terminal and/or the receiving terminal.
  • the indication information further includes a sending terminal identifier and a receiving terminal identifier; the number of the receiving terminal is at least one.
  • the scheduling information further includes a receiving terminal identifier and a sending terminal identifier.
  • the pilot signal is scrambled with the identifier of the sending terminal.
  • An embodiment of the present application further proposes a mobile terminal, which is characterized by being used as a sending terminal or a receiving terminal according to any one of the method embodiments of the present application.
  • the sending terminal is used to send instruction information at a first resource location and send a pilot signal at a predetermined second resource location; and also used to receive scheduling information at a third resource location, and then at a fourth resource according to the scheduling information
  • the location receives channel state information and determines the modulation and coding scheme; the indication information includes the identity of the sending terminal and at least one identity of the receiving terminal.
  • the receiving terminal is used for receiving indication information at a first resource location and receiving a pilot signal at a predetermined second resource location; measuring the pilot signal and generating channel state information; and also used for sending scheduling information at a third resource location,
  • the scheduling information includes a fourth resource location, and channel state information is sent at the fourth resource location.
  • An embodiment of the present application further proposes a mobile communication system, including the mobile terminal described in any embodiment of the present application. Among them, at least one mobile terminal is used as the transmitting terminal; at least one mobile terminal is used as the receiving terminal.
  • the receiving end detects and feeds back the channel quality of the sending end.
  • the technical solution of the present application can support the mobile terminal to send pilot information to another mobile terminal and adjust the modulation and coding scheme according to the feedback to ensure the correct transmission of data.
  • the solution of the present application is used in the Internet of Vehicles unicast communication, to effectively establish a unicast service connection between a sending end and multiple receiving ends, and improve signal transmission quality.
  • Figure 1 is a schematic diagram of a resource pool
  • FIG. 2 is an embodiment of the process of the application method
  • FIG. 3 is a schematic diagram of an embodiment of a mobile terminal and a mobile communication system of the present application.
  • FIG. 1 is a schematic diagram of a resource pool defined by the present invention.
  • the frame format of the V2X communication channel distinguish resource pools. In each set period, it contains control resource pools and data resource pools; in the control resource pools, it further contains public control resources and dedicated control resources.
  • resource position refers to the position of the signal in the time domain and the frequency domain.
  • the resource location may be discrete or continuous in both time and frequency domains, which is related to the modulation signal transmission technology and is not specifically limited here.
  • the common control resources refer to control resources that can be occupied by any one mobile terminal, and can only be occupied by one terminal device at a time.
  • the common control resource is used to transmit indication information (denoted as SCI, Sidelink Control Information) in the mobile terminal, indicating that the pilot signal exists. SCI also triggers other mobile terminals to report channel state information. Any mobile terminal preempting the common control resource means that the mobile terminal sends a V-RS.
  • the dedicated control resource refers to a resource used by the mobile terminal to send scheduling information.
  • the scheduling information includes scheduling information for channel state information (denoted as V-CSI in this application) and scheduling information for service data .
  • the two kinds of scheduling information are reused in the dedicated control resource pool.
  • the terminal device that receives the scheduling information identifies the specific content of the scheduling information.
  • the scheduling information is for V-CSI, it indicates the location of V-CSI in the data resource pool.
  • the resource location occupied by the terminal device sending V-CSI information must have a certain delay compared with the resource location occupied by the V-RS. Generally, this delay has an upper limit of time.
  • FIG. 2 is an embodiment of the process of the application method.
  • An embodiment of the present application proposes a V2X unicast communication method to implement communication between a sending terminal and a receiving terminal, including the following steps:
  • Step 10 The sending terminal sends indication information (SCI) at the first resource location, indicating that the pilot signal exists; if the sending terminal seizes this common resource, it means that the V-RS needs to be sent.
  • the indication information includes the sending terminal identifier and the required The identifier of the receiving terminal reporting V-CSI information to instruct the corresponding receiving terminal to report V-CSI information to the sending terminal.
  • the first resource location is occupied by only one sending terminal when sending the indication information.
  • the indication information further includes a sending terminal identifier and a receiving terminal identifier; the number of the receiving terminal is at least one.
  • the pilot signal is scrambled with the sending terminal identifier.
  • Step 20 The sending terminal sends the pilot signal at the second resource location; the receiving terminal receives the pilot signal according to the instruction information;
  • step 20 the receiving terminal first receives the pilot signal at the first resource location. Since the first resource location is in the common resource pool, any receiving terminal can listen to the indication information for the signal of the first resource location.
  • the second resource location is in the data resource pool. Preferably, the location of the second resource is fixed.
  • the SCI contains the identification of the receiving terminal
  • the identified receiving terminal searches for the SCI, it can receive the V-RS at a fixed location.
  • step 30 the fourth resource location is in the data resource pool.
  • the delay between the fourth resource location and the second resource location is preset.
  • a fixed low-order MCS level can be used, such as QPAK 1/3 code rate; no retransmission is required.
  • the receiving terminal uses the scheduling information to inform the transmitting terminal how to receive channel state information.
  • the scheduling information includes at least information indicating the location of the fourth resource, such as frequency parameters, time parameters, character parameters or relative parameters in the data resource pool The delay parameters of the RS signal, etc.
  • the scheduling information further includes a receiving terminal identification and a sending terminal identification.
  • the corresponding sending terminal can identify the scheduling information to notify it to receive the channel state information generated by the corresponding receiving terminal at the fourth resource location.
  • the third resource location is also used for scheduling information of service data of the sending terminal and/or the receiving terminal.
  • the dedicated control resource pool is also applied.
  • the sending terminal can at least determine whether the content sent by the receiving terminal is scheduling information (CSI) for channel state information or scheduling information (SA) for service data according to the load.
  • CSI scheduling information
  • SA scheduling information
  • Step 50 The sending terminal receives the channel state information according to the scheduling information, and determines a modulation and coding scheme.
  • the coding scheme is determined according to the channel state information, for example, defined by the MCS level.
  • the sending terminal also determines the location of scheduling information for service data according to the channel state information.
  • FIG. 3 is a schematic diagram of an embodiment of a mobile terminal and a mobile communication system of the present application.
  • An embodiment of the present application further proposes a mobile terminal, which is characterized by being used as a sending terminal or a receiving terminal according to any one of the method embodiments of the present application.
  • the sending terminal TX1 is used to send the indication information SCI at the first resource position and the pilot signal V-RS at the predetermined second resource position; and also to receive the scheduling information SA at the third resource position, and then according to the The scheduling information receives the channel state information V-CSI at the fourth resource position and determines the modulation and coding scheme; the indication information includes a sending terminal identifier and at least one receiving terminal identifier.
  • control information includes ID identification information of the sending terminal (such as TX1), and multiple receiving ID identification information of the terminal (for example, RX1, RX2, ..., RXn, ...) to instruct the receiving terminal to report.
  • ID identification information of the sending terminal such as TX1
  • multiple receiving ID identification information of the terminal for example, RX1, RX2, ..., RXn, (7) to instruct the receiving terminal to report.
  • the user with the ID TX1 receives the V-CSI reported from the receiving terminal RXn, it is used to adjust the MCS level for RXn and the position of the corresponding data scheduling resource.
  • the characteristics of the pilot signal may be, for example: the time position of the pilot signal is one symbol or two symbols; the frequency domain position of the pilot signal is transmitted by occupying the full frequency band of Internet of Vehicles communication; the pilot signal The frequency domain pattern is transmitted at a certain frequency interval.
  • the special case is that all frequency domain positions of the entire frequency band are transmitted; the pilot signal is scrambled with the transmission terminal ID, TX1.
  • the receiving terminal RX1 is used for receiving indication information at a first resource location and receiving a pilot signal at a predetermined second resource location; measuring the pilot signal and generating channel state information; and also used for sending scheduling information at a third resource location ,
  • the scheduling information includes a fourth resource location, and channel state information is sent at the fourth resource location.
  • user RX1 is the receiving terminal, detects control information in the common resource pool, finds V-RS at the corresponding location to perform channel measurement, and obtains channel status information V-CSI with TX1, and preempts according to the reporting delay requirement
  • the resource sends scheduling information CSI SA1 for the channel state information to TX1.
  • the scheduled data is used to arrange the channel state information sent to TX1 in the data resource pool.
  • This CSI SA1 contains the receiving terminal ID, RX1, and the sending terminal ID, The ID of TX1.
  • An embodiment of the present application also proposes a V2X mobile communication system, including the mobile terminal described in any of the embodiments of the present application.
  • at least one mobile terminal is used as the transmitting terminal TX1; at least one mobile terminal is used as the receiving terminal RX1.
  • the sending terminal sends indication information in the common resource pool to indicate the presence of a pilot, including identification information of the sending terminal and identification information of the receiving terminal that needs to feedback channel state information; preferably, the indication information also includes pilot
  • the resource position P2 is, for example, the time-domain symbol position in the data resource pool.
  • the sending end sends a pilot signal at the indicated time-domain symbol position.

Landscapes

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

Abstract

本申请公开一种V2X单播通信方法、终端设备和系统。在发送终端和接收终端之间实现通信，所述方法包括以下步骤：发送终端在第一资源位置发送指示信息表示导频信号存在；在第二资源位置发送导频信号；接收终端根据指示信息接收导频信号，对导频信号进行测量，生成信道状态信息，在第四资源位置发送；接收终端在第三资源位置发送调度信息，指示第四资源位置；发送终端根据调度信息接收所述信道状态信息，确定调制编码方案。本申请还公开一种移动终端，用作发送终端或接收终端；本申请还提出一种移动通信系统，包含本申请任意一项实施例所述移动终端。本申请的方案用于车联网单播通信，有效地建立发送端和接收端之间的业务连接、提高信号传送质量。

Description

一种V2X单播通信方法、终端设备和系统
本申请要求在2018年12月3日提交中国专利局、申请号为201811467460.X，发明名称为“一种V2X单播通信方法、终端设备和系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及移动通信领域，尤其涉及一种V2X单播通信方法、终端设备和系统。
背景技术
其中V2V(车-车通信)是V2X通信技术的核心。但是，目前4G标准中的D2D/V2X技术是广播/组播的传输模式，没有实现单播D2D/V2X传输模式，也没有使用MIMO、链路自适应、HARQ等在单播传输中普遍采用的传输技术。但面向未来5G阶段移动通信的发展，广播模式的D2D/V2X技术已经无法满足需要，5G V2V技术将由简单的传感器共享扩展到车车之间应答式的一对一通信，即单播D2D/V2X技术。
单播D2D模式存在一系列新的技术问题，尤其是在控制信道设计上，无法沿用原有蜂窝系统或广播和组播D2D模式的设计。在蜂窝移动通信系统中，只有基站有“多流”发送能力，而终端只能向一个基站发送数据。而广播和组播D2D系统中，发送端只能发送一路数据，并通过Sidelink SA(Scheduling Assignment)将其使用的资源及格式信息广播出去。在4G的广播和组播D2D模式中，所有接收端收到的都是相同的数据，发送端只是“单流”发送，占用一份资源，使用一种传输格式。而单播通信，发送端需要同时给多个终端发送不同数据，类似于蜂窝系统的下行。因此在单播的移动终端直通通信过程中，如何在多个移动终端之间建立可靠的多对多的单播通信，是需要解决的而技术问题。
发明内容
本发明提出V2X单播通信方法、终端设备和系统，解决现有系统不能在发送终端和接收终端之间进行可靠的单播通信的问题。
本申请实施例提出一种V2X单播通信方法，在发送终端和接收终端之间实现通信，包括以下步骤：
发送终端在第一资源位置发送指示信息，表示导频信号存在；
所述发送终端在第二资源位置发送所述导频信号；
接收终端根据所述指示信息，接收所述导频信号；
所述接收终端对所述导频信号进行测量，生成信道状态信息，在第四资源位置发送；
所述接收终端在第三资源位置发送调度信息，指示所述第四资源位置；
所述发送终端根据所述调度信息，接收所述信道状态信息，确定调制编码方案。
优选地，所述第一资源位置在发送指示信息时，只由一个发送终端占用。
优选地，所述第二资源位置是固定的。
优选地，所述第三资源位置在用于调度信息时，由至少一个接收终端占用。
优选地，所述第三资源位置，还用于所述发送终端和或所述接收终端的业务数据的调度信息。
作为本申请优化的实施例，所述指示信息还包含发送终端标识、接收终端标识；所述接收终端的数量为至少一个。
作为本申请优化的实施例，所述调度信息还包含接收终端标识、发送终端标识。
作为本申请优化的实施例，所述导频信号用发送终端的标识加扰。
本申请的实施例还提出一种移动终端，其特征在于，用作本申请任意一项方法实施例所述发送终端或接收终端。
所述发送终端，用于在第一资源位置发送指示信息、在预定的第二资源 位置发送导频信号；还用于在第三资源位置接收调度信息，再根据所述调度信息在第四资源位置接收信道状态信息、确定调制编码方案；所述指示信息包含发送终端标识、至少一个接收终端标识。
所述接收终端，用于在第一资源位置接收指示信息，在预定的第二资源位置接收导频信号；测量导频信号、生成信道状态信息；还用于在第三资源位置发送调度信息，所述调度信息包含第四资源位置，并在第四资源位置发送信道状态信息。
本申请实施例还提出一种移动通信系统，包含本申请任意一项实施例所述移动终端。其中，至少一个移动终端用作所述发射终端；至少一个移动终端用作所述接收终端。
本申请实施例采用的上述至少一个技术方案能够达到以下有益效果：
要实现单播通信，接收端对发送端的信道质量进行检测并反馈，本申请的技术方案能够支持移动终端向另一移动终端发送导频信息并根据反馈调整调制编码方案，保证数据的正确传输。本申请的方案用于车联网单播通信，有效地建立发送端和多个接收端之间的单播业务连接、提高信号传送质量。
附图说明
此处所说明的附图用来提供对本申请的进一步理解，构成本申请的一部分，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。在附图中：
图1为资源池示意图；
图2为本申请方法的流程实施例；
图3是本申请移动终端和移动通信系统实施例示意图。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚，下面将结合本申请具体实施例及相应的附图对本申请技术方案进行清楚、完整地描述。显然，所描述的实施例仅是本申请一部分实施例，而不是全部的实施例。基于本申请中 的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
以下结合附图，详细说明本申请各实施例提供的技术方案。
图1为本发明定义的资源池示意图。在V2X通信信道的帧格式中，区分资源池。在每一个设定时段中，包含控制资源池、数据资源池；在控制资源池中，进一步包含公共控制资源、专用控制资源。
所述数据资源池，用于移动终端之间传送业务数据，还用于传送导频信号(本申请中表示为V-RS)。本发明引入V2X单播通信的导频信号V-RS，用于测量移动终端之间的信道状态。在分配用于单播通信业务数据的带宽资源上发送。V-RS的时域位置是固定的，比如占用一个或者两个符号。在频域上是梳状的，其中的一个特例是单播通信的发送数据带宽全频带发送。导频信号用发送端ID进行加扰。
需要说明的是，在本申请中用“资源位置”表示信号在时域和频域上所处的位置。所述资源位置在时域和频域都可以表现为离散的或连续的，这和调制信号传输的技术有关，这里不做具体限定。
所述公共控制资源，是指任意一个移动终端都能够占用的控制资源，且在一个时刻只能由一个终端设备占用。在本申请中，所述公共控制资源用于在移动终端之间传送指示信息(本申请中表示为SCI，Sidelink Control Information)，表示存在所述导频信号。SCI还触发其他移动终端上报信道状态信息。任意一个移动终端抢占所述公共控制资源，就表示该移动终端发送V-RS。
所述专用控制资源，是指移动终端用于发送调度信息的资源，具体地，调度信息包括用于信道状态信息(本申请中表示为V-CSI)的调度信息和用于业务数据的调度信息。两种调度信息在专用控制资源池中复用。接收到调度信息的终端设备，对调度信息的具体内容进行识别。当调度信息是用于V-CSI时，指示V-CSI在数据资源池中的位置。终端设备发出V-CSI信息所 占用的资源位置与V-RS占用的资源位置相比，必然具有一定的时延。一般地，该时延有时间上限。
图2为本申请方法的流程实施例。
本申请实施例提出一种V2X单播通信方法，在发送终端和接收终端之间实现通信，包括以下步骤：
步骤10、发送终端在第一资源位置发送指示信息(SCI)，表示导频信号存在；发送终端抢占了这个公共资源就意味着要发送V-RS，在指示信息中，包含发送终端标识、需要上报V-CSI信息的接收终端标识，来指示相应的接收终端向发送终端上报V-CSI信息。
优选地，所述第一资源位置在发送指示信息时，只由一个发送终端占用。
作为本申请优化的实施例，所述指示信息还包含发送终端标识、接收终端标识；所述接收终端的数量为至少一个。
作为本申请优化的实施例，所述导频信号用发送终端标识加扰。
步骤20、所述发送终端在第二资源位置发送所述导频信号；接收终端根据所述指示信息，接收所述导频信号；
在步骤20中，所述接收终端首先在所述第一资源位置接收所述导频信号。由于所述第一资源位置在公共资源池，任何接收终端能够对所述第一资源位置的信号侦听所述指示信息。
当所述指示信息包含所述接收终端标识时，所对应的接收终端能够识别所述指示信息用于驱动其在所述第二资源位置接收所述导频信号。
所述第二资源位置在数据资源池中。优选地，所述第二资源位置是固定的。
例如，当SCI中包含接收终端标识时，所标识的接收终端搜索到SCI后，即可在固定位置上接收V-RS。
步骤30、所述接收终端对所述导频信号进行测量，生成信道状态信息，在第四资源位置发送；
在步骤30中，所述第四资源位置在数据资源池中。优选地，所述第四资源位置与所述第二资源位置之间的延时是预先设定的。
为保证上报的信道状态信息能够被准确接收，可采用固定的低阶MCS等级，比如QPAK 1/3码率；不需要重传。
步骤40、所述接收终端在第三资源位置发送调度信息，指示所述第四资源位置；
所述接收终端用所述调度信息通知所述发射终端如何接收信道状态信息，调度信息中至少包含表示第四资源位置的信息，例如在数据资源池中的频率参数、时间参数、字符参数或相对于RS信号的延时参数等。
优选地，所述第三资源位置在用于调度信息时，由至少一个接收终端占用。一旦接收终端需要发送相应的V-CSI，接收终端就发送信道状态信息的调度信息(CSI SA)，用于指示发送信道状态信息的资源位置。
优选地，所述调度信息还包含接收终端标识、发送终端标识。此时，对应的发送终端能够识别所述调度信息用于通知其在所述第四资源位置接收对应的接收终端产生的信道状态信息。
优选地，所述第三资源位置，还用于所述发送终端和或所述接收终端的业务数据的调度信息。例如，当所述接收终端向所述发送终端发送业务数据时，也应用所述专用控制资源池。发送终端至少能够根据负荷判断所述接收终端发送的内容是用于信道状态信息的调度信息(CSI SA)还是用于业务数据的调度信息(SA)。
步骤50、所述发送终端根据所述调度信息，接收所述信道状态信息，确定调制编码方案。
步骤50中，首先发送终端能够识别所述调度信息用于通知其在所述第四资源位置接收信道状态信息。
信道状态信息被发送终端接收后，根据所述信道状态信息确定编码方案，例如，通过MCS等级来定义。
优选地，所述发送终端还根据所述信道状态信息确定用于业务数据的调度信息的位置。
图3是本申请移动终端和移动通信系统实施例示意图。
本申请的实施例还提出一种移动终端，其特征在于，用作本申请任意一项方法实施例所述发送终端或接收终端。
所述发送终端TX1，用于在第一资源位置发送指示信息SCI、在预定的第二资源位置发送导频信号V-RS；还用于在第三资源位置接收调度信息SA，再根据所述调度信息在第四资源位置接收信道状态信息V-CSI、确定调制编码方案；所述指示信息包含发送终端标识、至少一个接收终端标识。
例如，在T1时刻，用户TX1抢占到公共控制资源，发送新的控制信息，指示有导频信号V-RS的存在，该控制信息包含发送终端的ID识别信息(例如TX1)，以及多个接收终端的ID识别信息(例如RX1，RX2，…，RXn，…)，来指示接收终端进行上报。ID为TX1的用户接收到来自接收终端RXn上报的V-CSI之后，用于调整给RX n的MCS等级以及相应的数据调度资源的位置。
所述导频信号的特点，例如可以是：.该导频信号的时间位置为一个符号或者两个符号；该导频信号的频域位置为占用车联网通信的全频带发送；该导频信号的频域图样间隔一定频率间隔发送，特殊情况是全频带的频域位置全部发送；该导频信号用发送终端ID即TX1进行加扰。
所述接收终端RX1，用于在第一资源位置接收指示信息，在预定的第二资源位置接收导频信号；测量导频信号、生成信道状态信息；还用于在第三资源位置发送调度信息，所述调度信息包含第四资源位置，并在第四资源位置发送信道状态信息。
例如，用户RX1是接收终端，在公共资源池中检测到控制信息，在相应的位置上找到V-RS进行信道测量，获得和TX1的信道状态信息V-CSI 1，根据上报时延要求，抢占资源发送用于信道状态信息的调度信息CSI SA1给 TX1，调度的数据用于在数据资源池中安排发送给TX1的信道状态信息，这个CSI SA1里包含接收终端ID即RX1和发送终端的ID即TX1的ID。
本申请实施例还提出一种V2X移动通信系统，包含本申请任意一项实施例所述移动终端。其中，至少一个移动终端用作所述发射终端TX1；至少一个移动终端用作所述接收终端RX1。所述发送终端在公共资源池中发送指示信息，指示导频的存在，包含发送终端标识信息以及需要反馈信道状态信息的接收终端标识信息；优选地，在所述指示信息中还包含导频的资源位置P2，例如在数据资源池中的时域符号位置。所述发送端在指示的时域符号位置发送导频信号。接收终端检测到所述指示信息后，在不大于固定的时隙间隔时延后，在专用控制资源池发送调度信息，用于指示反馈的信道状态信息的内容所占用的时频域资源位置P4、接收终端标识和发送终端标识等信息。
还需要说明的是，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、商品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、商品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、商品或者设备中还存在另外的相同要素。
以上所述仅为本申请的实施例而已，并不用于限制本申请。对于本领域技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原理之内所作的任何修改、等同替换、改进等，均应包含在本申请的权利要求范围之内。

Claims (10)

  1. 一种V2X单播通信方法，在发送终端和接收终端之间实现通信，其特征在于，包括以下步骤：
    发送终端在第一资源位置发送指示信息，表示导频信号存在；
    所述发送终端在第二资源位置发送所述导频信号；
    接收终端根据所述指示信息，接收所述导频信号；
    所述接收终端对所述导频信号进行测量，生成信道状态信息，在第四资源位置发送；
    所述接收终端在第三资源位置发送调度信息，指示所述第四资源位置；
    所述发送终端根据所述调度信息，接收所述信道状态信息，确定调制编码方案。
  2. 如权利要求1所述方法，其特征在于，所述第一资源位置在发送指示信息时，只由一个发送终端占用。
  3. 如权利要求1所述方法，其特征在于，所述第二资源位置是固定的。
  4. 如权利要求1所述方法，其特征在于，所述第三资源位置在用于调度信息时，由至少一个接收终端占用。
  5. 如权利要求1所述方法，其特征在于，所述指示信息还包含发送终端标识、接收终端标识；所述接收终端的数量为至少一个。
  6. 如权利要求1所述方法，其特征在于，所述调度信息还包含接收终端标识、发送终端标识。
  7. 如权利要求1所述方法，其特征在于，所述导频信号用发送终端的标识加扰。
  8. 如权利要求1所述方法，其特征在于，所述第三资源位置，还用于所述发送终端和或所述接收终端的业务数据的调度信息。
  9. 一种移动终端，其特征在于，用作权利要求1～8任意一项方法所述发送终端或接收终端；
    所述发送终端，用于在第一资源位置发送指示信息、在预定的第二资源位置发送导频信号；还用于在第三资源位置接收调度信息，再根据所述调度信息在第四资源位置接收信道状态信息、确定调制编码方案；所述指示信息包含发送终端标识、至少一个接收终端标识。
    所述接收终端，用于在第一资源位置接收指示信息，在预定的第二资源位置接收导频信号；测量导频信号、生成信道状态信息；还用于在第三资源位置发送调度信息，所述调度信息包含第四资源位置，并在第四资源位置发送信道状态信息。
  10. 一种移动通信系统，其特征在于，包含权利要求9所述移动终端，其特征在于，至少一个移动终端用作所述发射终端；至少一个移动终端用作所述接收终端。
PCT/CN2019/071429 2018-12-03 2019-01-11 一种v2x单播通信方法、终端设备和系统 WO2020113774A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811467460.X 2018-12-03
CN201811467460.XA CN110061806A (zh) 2018-12-03 2018-12-03 一种v2x单播通信方法、终端设备和系统

Publications (1)

Publication Number Publication Date
WO2020113774A1 true WO2020113774A1 (zh) 2020-06-11

Family

ID=67315036

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/071429 WO2020113774A1 (zh) 2018-12-03 2019-01-11 一种v2x单播通信方法、终端设备和系统

Country Status (2)

Country Link
CN (1) CN110061806A (zh)
WO (1) WO2020113774A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111698662A (zh) * 2020-06-15 2020-09-22 西安电子科技大学 高网络负载场景中mimo系统下的v2x通信方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021159512A1 (zh) * 2020-02-14 2021-08-19 华为技术有限公司 一种控制信息传输方法及装置
CN112532365B (zh) * 2020-11-17 2021-07-13 广州技象科技有限公司 一种多播用户调度选择方法、装置、系统和存储介质
CN113542129B (zh) * 2021-07-15 2023-01-24 无锡思朗电子科技有限公司 一种使用信号链表单发的传输方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106797635A (zh) * 2014-09-03 2017-05-31 华为技术有限公司 用于d2d资源分配的系统和方法
US20170272384A1 (en) * 2016-03-17 2017-09-21 Lg Electronics Inc. Method and apparatus for buffering v2x message for path switching in wireless communication system
CN107995605A (zh) * 2016-10-27 2018-05-04 工业和信息化部电信研究院 一种移动通信系统及终端直通单播发送控制方法
CN108347313A (zh) * 2017-01-24 2018-07-31 华为技术有限公司 反馈方法及用户设备

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104350778A (zh) * 2012-05-31 2015-02-11 交互数字专利控股公司 设备到设备(d2d)链路自适应
CN108631968B (zh) * 2017-03-20 2021-02-09 华为技术有限公司 一种数据反馈资源的确定方法及装置
CN112929139B (zh) * 2017-08-11 2022-05-20 中兴通讯股份有限公司 信息上报方法及装置、信息传输方法及装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106797635A (zh) * 2014-09-03 2017-05-31 华为技术有限公司 用于d2d资源分配的系统和方法
US20170272384A1 (en) * 2016-03-17 2017-09-21 Lg Electronics Inc. Method and apparatus for buffering v2x message for path switching in wireless communication system
CN107995605A (zh) * 2016-10-27 2018-05-04 工业和信息化部电信研究院 一种移动通信系统及终端直通单播发送控制方法
CN108347313A (zh) * 2017-01-24 2018-07-31 华为技术有限公司 反馈方法及用户设备

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111698662A (zh) * 2020-06-15 2020-09-22 西安电子科技大学 高网络负载场景中mimo系统下的v2x通信方法

Also Published As

Publication number Publication date
CN110061806A (zh) 2019-07-26

Similar Documents

Publication Publication Date Title
US11849405B2 (en) Method and apparatus for multi-antenna transmission in vehicle to vehicle communication
US11233607B2 (en) Method and apparatus for configuration of resource sensing in NR V2X resource allocation
WO2020113774A1 (zh) 一种v2x单播通信方法、终端设备和系统
US20200228247A1 (en) Harq operation and power control in sidelink
KR102508848B1 (ko) 무선 통신 시스템에서 디바이스 대 디바이스 사이드링크 보고를 전송하는 방법 및 장치
US11991725B2 (en) Downlink data transmission method and device, and storage medium
KR20210038324A (ko) 무선 통신 시스템에서 장치 대 장치 채널 측정을 전송하는 방법 및 장치
KR102673988B1 (ko) 무선 통신 시스템의 사이드링크 버퍼 상태 보고서에서 전송 피드백 모드를 구별하기 위한 방법 및 장치
KR20200141936A (ko) 무선 통신 시스템에서 사이드링크의 그룹캐스트를 위한 피드백 리소스를 처리하기 위한 방법 및 장치
WO2020113775A1 (zh) 一种车联网单播通信信道、通信方法和移动终端
WO2015000419A1 (zh) 下行协作传输中的调度方法、协作传输节点及中心协作点
KR20200036995A (ko) Nr v2x 시스템을 위한 harq 동작을 수행하는 방법 및 장치
US20230179354A1 (en) Receiving time overlapping downlink reference signals and channels
CN113316910A (zh) 用于发信号通知pdsch分集的系统和方法
WO2017028818A1 (zh) 一种数据传输方法、设备及系统
WO2014183697A1 (zh) 一种发送、接收系统信息的方法及装置
WO2019063014A1 (zh) 下行控制信息的发送、检测方法及装置
US20220408477A1 (en) Methods And Apparatus For Disabling Of Option 1 Hybrid Automatic Repeat Request (HARQ) Feedback For Sidelink Communication
CN115225236A (zh) 一种被用于无线通信的节点中的方法和装置
US20240088967A1 (en) Csi feedback for single dci based multi-trp transmission
WO2013135184A1 (zh) 控制信令的发送、接收方法、网络侧设备和用户设备
CN104620652B (zh) 测量Gap后的上行信息传输方法和装置
JPWO2021161477A5 (ja) 端末、基地局、通信システム及び通信方法
WO2018171568A1 (zh) 一种信息传输方法、处理方法及装置
CN111417197A (zh) 上行传输配置方法及网络侧设备、用户终端

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19892315

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19892315

Country of ref document: EP

Kind code of ref document: A1