WO2020113775A1 - 一种车联网单播通信信道、通信方法和移动终端 - Google Patents

一种车联网单播通信信道、通信方法和移动终端 Download PDF

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WO2020113775A1
WO2020113775A1 PCT/CN2019/071432 CN2019071432W WO2020113775A1 WO 2020113775 A1 WO2020113775 A1 WO 2020113775A1 CN 2019071432 W CN2019071432 W CN 2019071432W WO 2020113775 A1 WO2020113775 A1 WO 2020113775A1
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mobile terminal
resource pool
channel
data
control information
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PCT/CN2019/071432
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English (en)
French (fr)
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焦慧颖
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中国信息通信研究院
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    • 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
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • 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
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • 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
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • 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
    • H04W72/20—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

Definitions

  • the present application relates to the field of mobile communications, and in particular to a channel design and communication method for IoV unicast communication.
  • V2V Vehicle-Vehicle Communication
  • the current D2D/V2X technology in the 4G standard is a broadcast/multicast transmission mode. It does not implement the unicast D2D/V2X transmission mode, nor does it use MIMO, link adaptation, HARQ, etc. that are commonly used in unicast transmission. Transmission technology.
  • the D2D/V2X technology in the broadcast mode has been unable to meet the needs.
  • 5G V2V technology will be expanded from simple sensor sharing to one-to-one communication between vehicles and vehicles, that is, unicast D2D/V2X technology.
  • 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.
  • the present application discloses a vehicle-to-vehicle unicast communication channel, a communication method, and a mobile terminal, and solves the problem that the existing system cannot achieve reliable unicast communication between multiple sending ends and multiple receiving ends.
  • An embodiment of the present application provides a vehicle-to-vehicle unicast communication channel.
  • Each time slot in the channel includes a data resource pool; at least one time slot of the channel further includes a control resource pool and/or a feedback resource pool.
  • the control resource pool is used to send control information, and the control information includes a sender identifier and a receiver identifier.
  • the feedback resource pool is used to send HARQ information.
  • An embodiment of the present application also provides a method of networking unicast communication using a unicast communication channel, where each time slot in the channel contains a data resource pool; and at least one time slot in the channel also contains a control resource pool ; At least one time slot of the channel also includes a feedback resource pool; the method includes the following steps:
  • the first mobile terminal sends control information through the control resource pool, where the control information includes the first mobile terminal identifier and the second mobile terminal identifier;
  • the first mobile terminal sends service data through the data resource pool
  • the second mobile terminal receives service data through the data resource pool
  • the second mobile terminal sends HARQ information through the feedback resource pool.
  • control information further includes a downlink allocation indication (DAI), and the downlink allocation indication includes the number of subframes and or the number of subframes.
  • DAI downlink allocation indication
  • the positions of the control information and the HARK information have a fixed correspondence.
  • the time slots including the feedback resource pool are periodically distributed in the channel.
  • control information further includes a new data indication (NDI), which is used to distinguish new data from retransmitted data.
  • NDI new data indication
  • the present application also proposes a mobile terminal for use as the first mobile terminal or the second mobile terminal described in any of the embodiments of the present application.
  • the technical solution of the present application can support the mobile terminal to send HARQ information to another mobile terminal 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 multiple sending ends and multiple receiving ends.
  • FIG. 1 is a schematic diagram of an embodiment of a time slot in a channel of this application
  • FIG. 2 is a schematic diagram of an embodiment in which the channel of this application contains multiple time slots
  • FIG. 3 is a flowchart of an embodiment of a communication method of the present application.
  • FIG. 1 is a schematic diagram of an embodiment of a time slot in a channel of this application.
  • An embodiment of the present application provides a vehicle-to-vehicle unicast communication channel.
  • Each time slot in the channel contains a data resource pool for transmitting unicast service data.
  • At least one time slot of the channel also includes a control resource pool.
  • the control resource pool is used to send control information, and the control information includes a transmitter ID (TX ID) and a receiver ID (RX ID). Introduce TX ID and RX ID instructions into the downlink control information. When multiple transmitters send data and multiple receivers receive data, TX ID and RX ID are used to distinguish the transmitter and receiver.
  • At least one time slot of the channel also includes a feedback resource pool.
  • the feedback resource pool is used for sending HARQ information. For example, a resource pool for unicast feedback is introduced in a V2X time slot, and channel state information of unicast feedback is sent.
  • control information further includes a downlink allocation indication (DAI), and the downlink allocation indication includes the number of subframes and or the number of subframes.
  • DAI downlink allocation indication
  • the time slots containing the feedback resource pool are periodically distributed in the channel.
  • High-level signaling can be introduced to configure the HARQ feedback mechanism of the terminal.
  • the HARQ feedback mechanism of the mobile terminal is configured to be periodic through the base station. In this way, in order to avoid frequently preempting resources to send HARQ, each mobile terminal sends HARQ periodically, and this period can be configured and adjusted according to the service type.
  • the positions of the control information and the HARK information have a fixed correspondence, in other words, the resources fed by HARQ and the resources of the corresponding downlink scheduling control channel have a binding relationship.
  • the TXID, RXID, and DAI information indications in the control information of the transmitting end are used to distinguish the resource location of the HARQ information.
  • control information further includes a new data indication (NDI), which is used to distinguish new data from retransmitted data.
  • NDI new data indication
  • the retransmitted data refers to that when the sending end judges that the receiving end has not correctly received the service data according to the HARQ feedback, the data is retransmitted.
  • FIG. 2 is a schematic diagram of an embodiment in which a channel includes multiple time slots.
  • D1 to D5 are data sent from 5 different mobile terminals
  • TXID represents different mobile terminals sending data
  • DAI indicates the same mobile terminal's sending subframe
  • the resource position and the control information are in a binding relationship , Which can identify to which mobile terminal a particular HARQ is fed back.
  • HARQ feedback can use the HARQ binding method, that is, the DAI contained in the control information indicates that the service data contains multiple subframes.
  • the mobile terminal receiving the service data corresponds to the last subframe HARQ information is sent at the HARQ resource location.
  • FIG. 3 is a flowchart of an embodiment of a communication method of the present application. Using the method of this embodiment, this patent designs a HARQ feedback mechanism for unicast communication in the Internet of Vehicles.
  • a unicast communication method uses a unicast communication channel, and each time slot in the channel includes a data resource pool; at least one time slot in the channel also includes a control resource pool ; At least one time slot of the channel also includes a feedback resource pool; the method includes the following steps:
  • Step 10 The first mobile terminal sends control information through the control resource pool, where the control information includes the first mobile terminal identifier and the second mobile terminal identifier;
  • the first mobile terminal is a mobile terminal for sending (referred to as sending end for short); the second mobile terminal is a mobile terminal for receiving (referred to as receiving end for short).
  • the first mobile terminal identity is the sending end identity
  • the second mobile terminal identity is the receiving end identity
  • control information further includes a downlink allocation indication (DAI), where the downlink allocation indication includes the number of subframes and or the number of subframes.
  • DAI downlink allocation indication
  • control information further includes a new data indication (NDI), which is used to distinguish new data from retransmitted data.
  • NDI new data indication
  • TXID, RXID and DAI information are added to the control information sent by the sending end to help the receiving end find a suitable resource location for HARQ feedback.
  • Step 20 The first mobile terminal sends service data through the data resource pool; the second mobile terminal receives service data through the data resource pool;
  • step 20 in order to receive the service data sent by the first mobile terminal, the second mobile terminal first receives the control information sent by the first mobile terminal. Because the control information includes the first mobile terminal identifier and the second mobile terminal identifier; the second mobile terminal can determine that it is the receiving terminal and can determine the first receiving terminal as the transmitting terminal.
  • the second mobile terminal can receive service data from the first mobile terminal at a resource location specified in a data resource pool.
  • the control information includes instruction information for determining, in the data resource pool, the resource location at which the first mobile terminal sends service data; or the resource location at which the first mobile terminal sends service data is preset of.
  • Step 30 The second mobile terminal sends HARQ information through the feedback resource pool.
  • the time slots including the feedback resource pool are periodically distributed in the channel.
  • the base station instructs the mobile terminal to use periodic feedback HARQ.
  • Periodic feedback HARQ needs to configure uplink feedback resources and feedback period in advance; or the feedback period is a fixed value.
  • the resource positions of the control information and the HARK information have a fixed correspondence, that is, the resource positions of HARQ feedback at the receiving end and the control information sent by the sending end have a binding relationship.
  • the sending end sends control information
  • the receiving end corresponds to the resource position of the HARQ information according to the TXID, RXID, and DAI in the control information, and periodically sends the sending end to the sending end in the feedback resource pool.
  • Send HARQ information, the cycle is configurable.
  • the present application also proposes a mobile terminal for use as the first mobile terminal or the second mobile terminal described in any of the embodiments of the present application.
  • the first mobile terminal is a mobile terminal for sending (referred to as sending end for short); the second mobile terminal is a mobile terminal for receiving (referred to as receiving end for short).
  • the control information sent by the sending end includes the sending end identification information TXID, the receiving end identification information RXID, and the downlink allocation indication DAI.
  • the control information is also used to bind the resource position of HARQ feedback at the receiving end.
  • the downlink control information sent by the sending end further includes NDI, which is used to indicate whether the data is retransmission data or new data.
  • the resource position of the HARQ information sent by the receiving end and the control information of the sending end have a binding relationship, and the resource position of the HARQ information is bound to the control information.
  • the relationship between the resource position of the HARQ information and the following information is preset: TXID , RXID and DAI.
  • the receiving end sends HARQ information on the HARQ feedback resource corresponding to the last subframe.
  • the DAI indicates information about the position of the last subframe to prevent false detections.
  • the HARQ information sent by the receiving end is periodically sent in the newly defined feedback resource pool, and the period is configurable.

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

Abstract

本申请公开了一种车联网单播通信信道、通信方法和移动终端，所述信道中每个时隙包含数据资源池，至少一个时隙中还包含控制资源池和或反馈资源池；控制资源池用于发送控制信息，包含发送端标识、接收端标识、下行分配索引等；反馈资源池用于发送HARQ信息。本申请还公开了一种车联网单播通信方法，第一移动终端通过控制资源池发送控制信息，包含第一移动终端标识、第二移动终端标识；第一移动终端通过数据资源池发送业务数据；第二移动终端通过数据资源池接收业务数据；第二移动终端通过反馈资源池发送HARQ信息。本申请还包含用所述方法的移动终端。本申请的技术方案有效地建立多个发送端和多个接收端之间的单播业务连接，保证数据正确传输。

Description

一种车联网单播通信信道、通信方法和移动终端
本申请要求在2018年12月3日提交中国专利局、申请号为201811466782.2，发明名称为“一种车联网单播通信信道、通信方法和移动终端”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，尤其涉及一种车联网单播通信的信道设计和通信方法。
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
本申请公开一种车联网单播通信信道、通信方法和移动终端，解决现有系统不能实现多个发送端和多个接收端进行可靠的单播通信的问题。
本申请实施例提供一种车联网单播通信信道，所述信道中的每个时隙包含数据资源池；所述信道的至少一个时隙中，还包含控制资源池和或反馈资源池。所述控制资源池，用于发送控制信息，所述控制信息包含发送端标识、接收端标识。所述反馈资源池，用于发送HARQ信息。
本申请实施例还提供一种车联网单播通信方法，使用单播通信信道，所述信道中的每个时隙包含数据资源池；所述信道的至少一个时隙中，还包含控制资源池；所述信道的至少一个时隙中，还包含反馈资源池；所述方法包含以下步骤：
第一移动终端通过所述控制资源池，发送控制信息，所述控制信息包含第一移动终端标识、第二移动终端标识；
所述第一移动终端通过所述数据资源池发送业务数据；
所述第二移动终端通过所述数据资源池接收业务数据；
所述第二移动终端通过所述反馈资源池，发送HARQ信息。
在本申请的任意一个实施例中，优选的，所述控制信息还包含下行分配指示(DAI)，所述下行分配指示包含子帧数量和或子帧序号。
在本申请的任意一个实施例中，优选的，所述控制信息和所述HARK信息的位置具有固定的对应关系。
在本申请的任意一个实施例中，优选的，包含反馈资源池的时隙在信道中呈周期分布。
在本申请的任意一个实施例中，优选的，所述控制信息还包含新数据指示(NDI)，用于区分新数据和重传数据。
本申请还提出一种移动终端，用作本申请任意一项实施例所述第一移动终端或第二移动终端。
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，对发送端的数据要进行HARQ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HARQ信息，保证数据的正确传输。本申请的方案用于车联网单播通信，有效地建立多个发送端和多个接收端之间的单播业务连接。
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为本申请信道中一个时隙的实施例示意图；
图2为本申请信道包含多个时隙的实施例示意图；
图3为本申请通信方法的实施例流程图。
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为本申请信道中一个时隙的实施例示意图。
本申请实施例提供一种车联网单播通信信道，所述信道中的每个时隙包含数据资源池，用于传送单播业务数据。
所述信道的至少一个时隙中，还包含控制资源池。所述控制资源池，用于发送控制信息，所述控制信息包含发送端标识(TX ID)、接收端标识(RX ID)。下行控制信息中引入TX ID和RX ID的指示，在多个发送端发送数据、多个接收端接收数据时，用TX ID和RX ID来区分发送端和接收端。
所述信道的至少一个时隙中，还包含反馈资源池。所述反馈资源池，用 于发送HARQ信息。例如，在V2X的时隙中引入用于单播反馈的资源池，发送单播反馈的信道状态信息。
优选的，所述控制信息还包含下行分配指示(DAI)，所述下行分配指示包含子帧数量和或子帧序号。同一个发送终端向同一个接收端发送的业务数据占用多个子帧时，每一个子帧中用DAI来标识该子帧在业务数据中的位置，使接收端能够知晓每一个子帧在业务数据中的位置。
优选的，包含反馈资源池的时隙在信道中呈周期分布。可引入高层信令配置终端的HARQ反馈机制，例如，在移动终端为单播通信的时候，通过基站将移动终端HARQ的反馈机制配置为周期性的。这样一来，为避免频繁的抢占资源来发送HARQ，每个移动终端发送HARQ是周期性的，并且这个周期可以根据业务类型来配置调整。
优选的，所述控制信息和所述HARK信息的位置具有固定的对应关系，换句话说，HARQ反馈的资源和相应的下行调度控制信道的资源具有绑定关系。具体地，例如利用发送端控制信息中的TXID、RXID和DAI信息指示来区分HARQ信息的资源位置。
优选的，所述控制信息还包含新数据指示(NDI)，用于区分新数据和重传数据。所述重传数据，是指发送端根据HARQ反馈的情况，判断接收端未正确接收业务数据时，重新传送数据。
图2为本申请信道包含多个时隙的实施例示意图。
如图所示，在一个反馈周期内多个移动终端向一个移动终端发送数据。D1到D5分别是来自5个不同的移动终端发送的数据，TXID表述发送数据的不同移动终端，DAI指示相同移动终端的发送子帧
例如来自移动终端TXID＝0的业务数据D1包含3个子帧；DAI包含子帧序号0～2，占用了第1、3、5这3个时隙。
来自移动终端TXID＝1的业务数据D2，占用第2个时隙；
来自移动终端TXID＝3的业务数据D3，占用第4个时隙；
来自移动终端TXID＝5的业务数据D4，占用第6个时隙；
来自移动终端TXID＝6的业务数据D5，占用第7个时隙。
接收端的移动终端RXID＝0，在用于反馈的时隙中(例如第8个时隙)的反馈资源池中发送HARQ信息。反馈周期，例如可以是用时隙的数量表示，图中，反馈周期＝8。
其中TXID＝1的移动终端在三个时隙上发送了数据，在反馈周期中的反馈资源池中有多个资源位置用于进行HARQ反馈，该资源位置和所述控制信息是具有绑定关系的，由此能够识别一个特定HARQ是反馈给哪个移动终端的。当一个移动终端发送的业务数据包含多个子帧，HARQ反馈可用HARQ绑定的方法，即控制信息中包含的DAI表示业务数据包含多个子帧，接收业务数据的移动终端在最后一个子帧对应的HARQ资源位置上发送HARQ信息。
图3为本申请通信方法的实施例流程图。用本实施例的方法，本专利设计了一种用于车联网单播通信的HARQ反馈机制。
本申请实施例提供的一种车联网单播通信方法，使用单播通信信道，所述信道中的每个时隙包含数据资源池；所述信道的至少一个时隙中，还包含控制资源池；所述信道的至少一个时隙中，还包含反馈资源池；所述方法包含以下步骤：
步骤10、第一移动终端通过所述控制资源池，发送控制信息，所述控制信息包含第一移动终端标识、第二移动终端标识；
所述第一移动终端，是用于发送的移动终端(简称发送端)；所述第二移动终端，是用于接收的移动终端(简称接收端)。
在本实施例中，所述第一移动终端标识即所述发送端标识，第二移动终端标识即所述接收端标识。
在步骤10中，优选的，所述控制信息还包含下行分配指示(DAI)，所述下行分配指示包含子帧数量和或子帧序号。
在步骤10中，优选的，所述控制信息还包含新数据指示(NDI)，用于区分新数据和重传数据。
与现有技术的车联网单播通信协议相比，发送端的发出的控制信息增加TXID，RXID和DAI信息，来帮助接收端找到合适的资源位置用于HARQ反馈。
步骤20、所述第一移动终端通过所述数据资源池发送业务数据；所述第二移动终端通过所述数据资源池接收业务数据；
步骤20中，为了接收所述第一移动终端发送的业务数据，所述第二移动终端首先接收所述第一移动终端发送的控制信息。由于所述控制信息中包含第一移动终端标识和第二移动终端标识；所述第二移动终端能够判定自己为接收端、并能确定所述第一接收终端为发射端。
本领域技术人员能够理解，根据所述控制信息，所述第二移动终端能够在数据资源池中指定的资源位置接收来自所述第一移动终端的业务数据。例如所述控制信息中包含指示信息，用于在所述数据资源池中确定所述第一移动终端发送业务数据的资源位置；或者所述第一移动终端发送业务数据的资源位置是预先设定的。
步骤30、所述第二移动终端通过所述反馈资源池，发送HARQ信息。
在本方法实施例中，优选的，包含反馈资源池的时隙在信道中呈周期分布。例如，基站在给移动终端配置单播通信的时候，指示移动终端采用周期性反馈HARQ。周期性反馈HARQ，需要预先配置上行反馈资源，以及反馈周期；或者反馈周期是固定的值。
在步骤30中，优选的，所述控制信息和所述HARK信息的资源位置具有固定的对应关系，也就是说，接收端的HARQ反馈的资源位置和发送端发出的控制信息具有绑定关系。
在本申请的方法实施例中，最佳地，发送端发送控制信息，接收端根据控制信息中的TXID，RXID和DAI来对应HARQ信息的资源位置，周期性 地在反馈资源池中向发送端发送HARQ信息，周期是可配置的。
本申请还提出一种移动终端，用作本申请任意一项实施例所述第一移动终端或第二移动终端。
所述第一移动终端，是用于发送的移动终端(简称发送端)；所述第二移动终端，是用于接收的移动终端(简称接收端)。
发送端发送的控制信息包括发送端标识信息TXID，接收端标识信息RXID，下行分配指示DAI。所述控制信息还用来和接收端的HARQ反馈的资源位置绑定。优选的，发送端发送的下行控制信息还包括NDI，用于指示数据是重传数据还是新数据。
接收端发送的HARQ信息的资源位置和发送端的控制信息具有绑定关系，HARQ信息的资源位置和控制信息绑定，例如，所述HARQ信息的资源位置和以下信息的关系是预设的：TXID，RXID和DAI。
多个DAI的时候，接收端在最后一个子帧对应的HARQ反馈资源上发送HARQ信息，DAI指示了关于最后一个子帧位置的信息，防止误检的情况发生。
接收端发送的HARQ信息在新定义的反馈资源池中周期性发送，周期是可配置的。
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……”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 (11)

  1. 一种车联网单播通信信道，所述信道中的每个时隙包含数据资源池，其特征在于，所述信道的至少一个时隙中，还包含控制资源池和或反馈资源池；
    所述控制资源池，用于发送控制信息，所述控制信息包含发送端标识、接收端标识；
    所述反馈资源池，用于发送HARQ信息。
  2. 如权利要求1所述信道，其特征在于，所述控制信息还包含下行分配指示，所述下行分配指示包含子帧数量和或子帧序号。
  3. 如权利要求1所述信道，其特征在于，所述控制信息和所述HARK信息的位置具有固定的对应关系。
  4. 如权利要求1所述信道，其特征在于，包含反馈资源池的时隙在信道中呈周期分布。
  5. 如权利要求1所述信道，其特征在于，所述控制信息还包含新数据指示信息，用于区分新数据和重传数据。
  6. 一种车联网单播通信方法，使用单播通信信道，所述信道中的每个时隙包含数据资源池；所述信道的至少一个时隙中，还包含控制资源池和或反馈资源池；其特征在于，包含以下步骤：
    第一移动终端通过所述控制资源池，发送控制信息，所述控制信息包含第一移动终端标识、第二移动终端标识；
    所述第一移动终端通过所述数据资源池发送业务数据；
    所述第二移动终端通过所述数据资源池接收业务数据；
    所述第二移动终端通过所述反馈资源池，发送HARQ信息。
  7. 如权利要求6所述通信方法，其特征在于，所述控制信息还包含下行分配指示，所述下行分配指示包含子帧数量和或子帧序号。
  8. 如权利要求6所述通信方法，其特征在于，所述控制信息和所述HARK信息的位置具有固定的对应关系。
  9. 如权利要求6所述通信方法，其特征在于，包含反馈资源池的时隙在信道中呈周期分布。
  10. 如权利要求6所述通信方法，其特征在于，所述控制信息还包含新数据指示信息，用于区分新数据和重传数据。
  11. 一种移动终端，其特征在于，用作权利要求6～10任意一项通信方法所述第一移动终端或第二移动终端。
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