WO2022062878A1 - 单播物理层标识指示、确定方法及装置、存储介质、车载设备 - Google Patents

单播物理层标识指示、确定方法及装置、存储介质、车载设备 Download PDF

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Publication number
WO2022062878A1
WO2022062878A1 PCT/CN2021/116395 CN2021116395W WO2022062878A1 WO 2022062878 A1 WO2022062878 A1 WO 2022062878A1 CN 2021116395 W CN2021116395 W CN 2021116395W WO 2022062878 A1 WO2022062878 A1 WO 2022062878A1
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WIPO (PCT)
Prior art keywords
physical layer
layer identifier
message
unicast
identifier
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English (en)
French (fr)
Inventor
高兴航
范慧芳
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Beijing Ziguang Zhanrui Communication Technology Co Ltd
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Beijing Ziguang Zhanrui Communication Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states

Definitions

  • the present invention relates to the field of communication technologies, and in particular, to a method and device for indicating and determining a unicast physical layer identifier, a storage medium, and a vehicle-mounted device.
  • the vehicle short-range communication system is a system for interconnection and communication between vehicle equipment, including a cockpit domain controller, vehicle terminals (such as vehicle audio equipment, vehicle video equipment, and anti-theft systems), smart phones, and smart wearable devices.
  • vehicle-mounted short-range communication system includes a management node and a terminal node, wherein the management node is a node that sends data scheduling information from the vehicle-mounted wireless short-range communication system; the terminal node is responsible for receiving the data scheduling information from the vehicle-mounted wireless short-distance communication system, and sending the data according to the data scheduling information. data node.
  • the physical layer identifier is an identifier used for physical layer addressing.
  • the terminal nodes all support a physical layer initial access procedure (referred to as a random access procedure for short), so that the management node obtains terminal node information.
  • the terminal node performs random access based on a physical layer identifier, and the physical layer identifier at least includes a physical layer identifier field for non-contention access and a physical layer identifier field for contention access.
  • the management node is responsible for maintaining the mapping relationship between the terminal node of the communication domain and the physical layer identifier.
  • the physical layer identifier is used to uniquely identify the terminal node in the communication domain.
  • the physical layer identity can be preconfigured or configured by the management node.
  • the physical layer identifier can also be used for scheduling, and the physical layer identifier used for scheduling is not in the physical layer identifier field for contention access.
  • the management node communication domain system broadcast message only contains the contention access resource configuration, all terminal nodes (including on-board equipment and off-board equipment) adopt the competitive access mode.
  • the unicast physical layer identifier used by the current vehicular short-range communication terminal node is allocated after the security establishment. From the Radio Resource Control (RRC) establishment message to the security activation process, the terminal node still needs to use the public physical layer Identifies that signaling data is received, resulting in a data transmission conflict.
  • RRC Radio Resource Control
  • the technical problem solved by the present invention is how to ensure the smooth transmission of terminal node data.
  • an embodiment of the present invention provides a method for indicating a unicast physical layer identifier.
  • a physical layer identifier is selected; in the random access process, the selected physical layer identifier is carried in the response message and sent out.
  • the response message is message 2 or message 4.
  • carrying the selected physical layer identifier in the response message and sending it includes: receiving a message 1 sent by the terminal node, where the message 1 includes that the terminal node is used for contention.
  • the physical layer identifier scrambles the scheduling control information of the message 4, and sends the message 4 for the terminal node to receive the message 4 by using the selected physical layer identifier.
  • carrying the selected physical layer identifier in the response message and sending it includes: receiving a message 1 sent by the terminal node, where the message 1 includes that the terminal node is used for contention.
  • the physical layer identifier randomly selected in the physical layer identifier field of the access; the response message in the scrambled message 2 is scrambled with the randomly selected physical layer identifier; the message 3 sent by the terminal node is received, and the terminal node uses the The physical layer identifier in the message 1 scrambles the data in the message 3, and the message 3 also carries the self-identity of the terminal node; the randomly selected physical layer identifier scrambles the message 4, and sends the message 4,
  • the response message in the message 4 includes the selected physical layer identifier and the contention resolution identifier of the terminal node.
  • the terminal node receives the message 4 by using the randomly selected physical layer identifier.
  • the terminal node saves the selected physical layer identifier as a unicast physical layer identifier. .
  • an embodiment of the present invention also discloses a method for determining a unicast physical layer identifier, which is used for a terminal node.
  • the method for determining a unicast physical layer identifier includes: in a random access process, receiving a response from a management node message, the management node selects a physical layer identifier from a plurality of physical layer identifiers outside the physical layer identifier field for contention access, and in the random access process, carries the selected physical layer identifier in the response message.
  • the unicast physical layer identifier is determined based on the response message.
  • the determining the unicast physical layer identifier based on the response message includes: sending message 1 to the management node; receiving message 2 sent by the management node, where the response message in the message 2 includes the selected physical layer. layer identifier; send message 3, the data in the message 3 is scrambled by the selected physical layer identifier carried in the response message 2, or the message 3 carries the selected physical layer identifier; use the The selected physical layer identifier is descrambled to receive the message 4 sent by the management node.
  • the determining the unicast physical layer identifier based on the response message includes: sending a message 1 to the management node, where the message 1 includes the physical layer identifier randomly selected in the physical layer identifier field for contention access ; receive the message 2 sent by the management node; send a message 3 to the management node, the data in the message 3 is scrambled by the physical layer identifier in the message 1; use the randomly selected physical layer
  • the identifier descrambling receives the message 4 sent by the management node, and the response message in the message 4 includes the selected physical layer identifier.
  • the determining the unicast physical layer identifier based on the response message includes: if the contention resolution identifier in message 4 in the random access process is consistent with the identifier for conflict resolution reported in message 3, then The selected physical layer identifier in the response message is saved as a unicast physical layer identifier.
  • the embodiment of the present invention also discloses a unicast physical layer identification indicating device.
  • the unicast physical layer identification indicating device includes: a physical layer identification selection module, which is used for a plurality of A physical layer identifier is selected from the physical layer identifiers; the physical layer identifier sending module is used to carry the selected physical layer identifier in the response message and send it out during the random access process.
  • the embodiment of the present invention also discloses a device for determining a unicast physical layer identifier.
  • the device for determining a unicast physical layer identifier includes: a response message receiving module, configured to receive a response message from a management node in a random access process, the The management node selects a physical layer identifier from a plurality of physical layer identifiers outside the physical layer identifier field used for contention access, and in the random access process, carries the selected physical layer identifier in a response message and sends it out;
  • a unicast physical layer identifier determination module configured to determine the unicast physical layer identifier based on the response message.
  • the embodiment of the present invention further discloses a storage medium on which a computer program is stored, and the computer program is executed by a processor to execute the steps of the unicast physical layer identifier indication method, or the unicast physical layer identifier determines steps of the method.
  • An embodiment of the present invention further discloses an in-vehicle device, comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and the processor executes the single when running the computer program. the steps of the method for indicating the unicast physical layer identifier, or the steps of the method for determining the unicast physical layer identifier.
  • the technical solution of the present invention is to indicate that the physical layer identifier that is not in the physical layer identifier field of contention access is used by the terminal node during the random access process, that is, the unicast physical layer identifier is allocated to the terminal node in advance compared with the prior art. It is avoided that the terminal node still needs to use the common physical layer identifier to receive signaling data during the process from the RRC establishment message to the security activation, so as to avoid data transmission conflicts and ensure the smooth transmission of terminal node data.
  • FIG. 1 is a flowchart of a method for indicating a unicast physical layer identifier according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a specific implementation manner of step S102 shown in FIG. 1;
  • FIG. 3 is a schematic diagram of a specific application scenario of an embodiment of the present invention.
  • Fig. 4 is a flow chart of a specific implementation manner of step S102 shown in Fig. 1;
  • FIG. 5 is a flowchart of a method for determining a unicast physical layer identifier according to an embodiment of the present invention
  • FIG. 6 is a schematic structural diagram of a device for indicating a unicast physical layer identifier according to an embodiment of the present invention
  • FIG. 7 is a schematic structural diagram of an apparatus for determining a unicast physical layer identifier according to an embodiment of the present invention.
  • the unicast physical layer identifier used by the current vehicle-mounted short-range communication terminal node is allocated after the security establishment. From the radio resource control (Radio Resource Control, RRC) establishment message to the security activation process, the terminal node still needs to Receive signaling data with a common physical layer identifier, resulting in data transmission collisions.
  • RRC Radio Resource Control
  • the technical solution of the present invention is to indicate that the physical layer identifier that is not in the physical layer identifier field of contention access is used by the terminal node during the random access process, that is, the unicast physical layer identifier is allocated to the terminal node in advance compared with the prior art. It is avoided that the terminal node still needs to use the common physical layer identifier to receive signaling data during the process from the RRC establishment message to the security activation, so as to avoid data transmission conflicts and ensure the smooth transmission of terminal node data.
  • FIG. 1 is a flowchart of a method for indicating a unicast physical layer identifier according to an embodiment of the present invention.
  • the unicast physical layer identifier indication method in the embodiment of the present invention can be used for a management node in a vehicle-mounted short-range communication system.
  • the management node may be a suitable vehicle-mounted device.
  • the management node may execute each step of the method shown in FIG. 1 , so as to indicate the unicast physical layer identifier to the terminal node in the vehicular short-range communication system.
  • the end node may be a suitable in-vehicle device.
  • the method shown in FIG. 1 may include the following steps:
  • Step S101 selecting a physical layer identifier from a plurality of physical layer identifiers outside the physical layer identifier field used for contention access;
  • Step S102 In the random access process, the selected physical layer identifier is carried in the response message and sent out.
  • the unicast physical layer identification indication method may be implemented by a software program, and the software program runs in a processor integrated inside a chip or a chip module.
  • step S101 may be before the random access process, or may be during the random access process.
  • the physical layer identifier includes at least a physical layer identifier field for non-contention access and a physical layer identifier field for contention access.
  • the management node may select a physical layer identification that is not in the physical layer identification field of contention access, that is, may select a physical layer identification in the physical layer identification field of non-contention access or other physical layer identification fields.
  • the specific selection manner may be random selection, or may be any other implementable manner, which is not limited in this embodiment of the present invention.
  • the management node may send the selected physical layer identifier to the terminal node through a response message in the random access process.
  • the physical layer identifier that is not in the physical layer identifier field of the contention access is indicated for the terminal node to use, that is, the unicast physical layer identifier is allocated to the terminal node in advance compared with the prior art, so that it can be It is avoided that the terminal node still needs to use the common physical layer identifier to receive signaling data during the process from the RRC establishment message to the security activation, so as to avoid data transmission conflicts and ensure the smooth transmission of terminal node data.
  • the response message is message 2 or message 4.
  • message 1 and message 3 are sent by the terminal node to the management node
  • message 2 and message 4 are sent by the management node to the terminal node. Therefore, the physical layer identifier selected by the management node may be carried in message 2 or message 4 and sent to the terminal node.
  • step S102 shown in FIG. 1 may include the following steps:
  • Step S201 Receive a message 1 sent by a terminal node, where the message 1 includes a physical layer identifier randomly selected by the terminal node in the physical layer identifier field used for contention access;
  • Step S202 using the randomly selected physical layer identifier to scramble the response message in message 2, where the response message includes the selected physical layer identifier;
  • Step S203 Receive message 3 sent by the terminal node, the data in the message 3 is scrambled by using the selected physical layer identifier carried in the response message 2, or the message 3 carries the selected physical layer identifier. layer identification;
  • Step S204 scramble the scheduling control information of the message 4 by using the selected physical layer identifier, and send the message 4 for the terminal node to receive the message 4 by using the selected physical layer identifier.
  • the management node sends the selected physical layer identifier in message 2 to the terminal node, and the terminal node can receive message 4 by using the selected physical layer identifier. If the subsequent competition for the terminal node succeeds, continue to use the selected physical layer identifier to receive subsequent signaling.
  • the management node uses the randomly selected physical layer identifier carried in message 1 to scramble message 2, the terminal node uses the selected physical layer identifier carried in message 2 to scramble message 3, and the associated node uses the selected physical layer identifier to scramble message 2.
  • scramble message 4 the terminal node descrambles message 2 using the randomly selected physical layer identifier, the management node descrambles message 3 using the selected physical layer identifier, and the terminal node descrambles message 4 using the selected physical layer identifier.
  • FIG. 3 shows the interaction process between the management node 31 and the terminal node 32 in the random access process.
  • step 3.1 the terminal node 32 randomly selects a physical layer identifier in the physical layer identifier field for contention access.
  • step 3.2 the terminal node 32 sends a message 1 (Msg1), and the message 1 carries a randomly selected physical layer identifier.
  • the management node 31 selects a physical layer identifier from a plurality of physical layer identifiers outside the physical layer identifier field for contention access, and uses the randomly selected physical layer identifier in message 1 to scramble the physical layer identifier in message 2. response message.
  • step 3.4 the management node 31 sends a message 2 (Msg2), and the message 2 includes the selected physical layer identifier.
  • the terminal node 32 sends a message 3 (Msg3), and the message 3 includes an identity for conflict resolution, such as a cell radio network temporary identity (Cell Radio Network Temporary Identity, C-RNTI).
  • an identity for conflict resolution such as a cell radio network temporary identity (Cell Radio Network Temporary Identity, C-RNTI).
  • step 3.6 the management node 31 sends a message 4 (Msg4), and the message 4 includes the identification of the conflict resolution.
  • the terminal node 32 can determine whether the competition is successful by comparing the conflict resolution identifier in the message 3 with the conflict resolution identifier in the message 4 in the subsequent steps.
  • step S102 shown in FIG. 1 may include the following steps:
  • Step S401 Receive a message 1 sent by a terminal node, where the message 1 includes a physical layer identifier randomly selected by the terminal node in the physical layer identifier field used for contention access;
  • Step S402 scrambling the response message in the message 2 with the randomly selected physical layer identifier
  • Step S403 Receive the message 3 sent by the terminal node, the terminal node uses the physical layer identifier in the message 1 to scramble the data in the message 3, and the message 3 also carries the terminal node's own identifier. ;
  • Step S404 Scrambling a message 4 with the randomly selected physical layer identifier, and sending a message 4, where the response message in the message 4 includes the selected physical layer identifier and the contention resolution identifier of the terminal node.
  • the management node sends the selected physical layer identifier to the terminal node in message 4 .
  • the message 4 not only includes the identification used for conflict resolution, but also includes the selected physical layer identification.
  • the terminal node randomly selects the physical layer identifier in the physical layer identifier field for contention access.
  • the terminal node sends a message 1 (Msg1), and the message 1 carries a randomly selected physical layer identifier.
  • the management node selects a physical layer identifier from multiple physical layer identifiers outside the physical layer identifier field for contention access, and uses the randomly selected physical layer identifier in message 1 to scramble the response message in message 2 .
  • the management node sends message 2 (Msg2).
  • the terminal node sends a message 3 (Msg3), and the message 3 includes an identifier for conflict resolution, which may be, for example, a C-RNTI.
  • the management node scrambles the message 4 by using the randomly selected physical layer identifier, and sends a message 4 (Msg4), the message 4 includes the identifier of conflict resolution and the selected physical layer identifier.
  • the terminal node receives message 4 using the physical layer identification in message 1.
  • the terminal node receives the message 4 using the randomly selected physical layer identifier. That is, the terminal node uses the physical layer identifier randomly selected by the terminal node in message 1 to receive message 4.
  • the terminal node saves the selected physical layer identifier. Indicates the unicast physical layer identifier for subsequent signaling scheduling.
  • the method for determining a unicast physical layer identifier can be used for a terminal node in a vehicle short-range communication system.
  • the end node may be a suitable in-vehicle device.
  • the terminal node may execute various steps of the method shown in FIG. 5 .
  • the method described in FIG. 5 may include the following steps:
  • Step S501 in the random access process, receive a response message from the management node, the management node selects a physical layer identifier from a plurality of physical layer identifiers outside the physical layer identifier field used for contention access, and selects a physical layer identifier in the In the random access process, the selected physical layer identifier is carried in the response message and sent out;
  • Step S502 Determine the unicast physical layer identifier based on the response message.
  • the terminal node can determine the unicast physical layer identifier through the response message in the random access process, avoid using the common physical layer identifier to receive signaling data, and ensure smooth data transmission.
  • step S502 shown in FIG. 5 may include the following steps: if the contention resolution identifier in message 4 in the random access process is consistent with the identifier for conflict resolution reported in message 3, then The selected physical layer identifier in the response message is stored as a unicast physical layer identifier.
  • the unicast physical layer identification indicating device 60 shown in FIG. 6 can be used on the management node side, that is, it can be built-in or externally coupled to the management node.
  • the unicast physical layer identification indicating device 60 may include:
  • a physical layer identifier selection module 601, configured to select a physical layer identifier from a plurality of physical layer identifiers outside the physical layer identifier field used for contention access;
  • the physical layer identifier sending module 602 is configured to carry the selected physical layer identifier in the response message and send it out during the random access process.
  • the above-mentioned unicast physical layer identification indicating device 60 may correspond to a chip with a communication function in the management node, such as a system-on-a-chip (System-On-a-Chip, SOC), a baseband chip, etc.; or correspond to a management node It includes a chip module with a communication function; or corresponds to a chip module with a data processing function chip, or corresponds to a management node.
  • a chip with a communication function in the management node such as a system-on-a-chip (System-On-a-Chip, SOC), a baseband chip, etc.
  • SOC System-On-a-Chip
  • the apparatus 70 for determining a unicast physical layer identifier shown in FIG. 7 can be used at the terminal node side, that is, it can be built-in or externally coupled to the terminal node.
  • the apparatus 70 for determining a unicast physical layer identifier may include:
  • the response message receiving module 701 is configured to receive a response message from a management node in the random access process, and the management node selects a physical layer identifier from a plurality of physical layer identifiers outside the physical layer identifier field used for contention access. layer identifier, and in the random access process, the selected physical layer identifier is carried in the response message and sent out;
  • the unicast physical layer identifier determination module 702 is configured to determine the unicast physical layer identifier based on the response message.
  • the above-mentioned unicast physical layer identifier determination device 70 may correspond to a chip with a communication function in a terminal node, such as a system-on-a-chip (System-On-a-Chip, SOC), a baseband chip, etc.; or correspond to a terminal node It includes a chip module with a communication function; or corresponds to a chip module with a data processing function chip, or corresponds to a terminal node.
  • a chip with a communication function in a terminal node such as a system-on-a-chip (System-On-a-Chip, SOC), a baseband chip, etc.
  • SOC System-On-a-Chip
  • each module/unit included in each device and product described in the above-mentioned embodiments it may be a software module/unit, a hardware module/unit, or a part of a software module/unit and a part of a hardware module/unit .
  • each module/unit included therein may be implemented by hardware such as circuits, or at least some of the modules/units may be implemented by a software program.
  • the remaining (if any) part of the modules/units can be implemented by hardware such as circuits; for each device and product applied to or integrated in the chip module, the modules/units contained therein can be They are all implemented by hardware such as circuits, and different modules/units can be located in the same component of the chip module (such as chips, circuit modules, etc.) or in different components, or at least some of the modules/units can be implemented by software programs.
  • the software program runs on the processor integrated inside the chip module, and the remaining (if any) part of the modules/units can be implemented by hardware such as circuits; for each device and product applied to or integrated in the terminal, each module contained in it
  • the units/units may all be implemented in hardware such as circuits, and different modules/units may be located in the same component (eg, chip, circuit module, etc.) or in different components in the terminal, or at least some of the modules/units may be implemented by software programs Realization, the software program runs on the processor integrated inside the terminal, and the remaining (if any) part of the modules/units can be implemented in hardware such as circuits.
  • the embodiment of the present invention further discloses a storage medium, which is a computer-readable storage medium, and stores a computer program thereon. When the computer program runs, the steps of the methods shown in FIG. 1 to FIG. 5 can be executed.
  • 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.
  • the embodiment of the present invention further discloses an in-vehicle device.
  • the in-vehicle device may include a memory and a processor, and the memory stores a computer program that can run on the processor.
  • the processor may execute the steps of the methods shown in FIGS. 1 to 5 when the computer program is executed.
  • the in-vehicle equipment includes but is not limited to terminal equipment such as in-vehicle audio equipment, in-vehicle video equipment, anti-theft systems, smart phones, and smart wearable devices.

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Abstract

一种单播物理层标识指示、确定方法及装置、存储介质、车载设备，单播物理层标识指示方法包括：在用于竞争接入的物理层标识域之外的多个物理层标识中选取一个物理层标识；在随机接入过程中，将选取的物理层标识携带于响应消息中发送出去。本发明技术方案能够保证终端节点数据的顺利传输。

Description

单播物理层标识指示、确定方法及装置、存储介质、车载设备
本申请要求2020年9月23日提交中国专利局、申请号为202011008274.7、发明名称为“单播物理层标识指示、确定方法及装置、存储介质、车载设备”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
本发明涉及通信技术领域，尤其涉及一种单播物理层标识指示、确定方法及装置、存储介质、车载设备。
背景技术
车载短距离通信系统为车载设备间，包括座舱域控制器、车载终端(比如车载音频设备、车载视频设备、防盗系统)、智能手机、智能穿戴设备之间的互联和通信的系统。车载短距离通信系统包括管理节点和终端节点，其中，管理节点为车载无线短距通信系统发送数据调度信息的节点；终端节点，负责车载无线短距通信系统接收数据调度信息，根据数据调度信息发送数据的节点。物理层标识是用于物理层寻址的标识。
终端节点均支持物理层初始接入过程(简称为随机接入过程)，从而使得管理节点获取终端节点信息。终端节点基于物理层标识进行随机接入，物理层标识至少包含非竞争接入的物理层标识域和竞争接入的物理层标识域。管理节点负责维护通信域的终端节点与物理层标识的映射关系。其中物理层标识用来在通信域唯一的标识该终端节点。物理层标识可以是预配置的，或者由管理节点配置的。物理层标识还可用于调度，用于调度的物理层标识不在竞争接入的物理层标识域内。当管理节点通信域系统广播消息中只包含竞争接入资源配置时，所有终端节点(包括车载设备和非车载设备)均采用竞争接入方 式。
但是，当前车载短距离通信终端节点所用单播物理层标识是在安全建立之后分配的，从无线资源控制(Radio Resource Control,RRC)建立消息到安全激活过程，终端节点仍需要用公共的物理层标识接收信令数据，导致数据传输冲突。
发明内容
本发明解决的技术问题是如何保证终端节点数据的顺利传输。
为解决上述技术问题，本发明实施例提供一种单播物理层标识指示方法，单播物理层标识指示方法包括：在用于竞争接入的物理层标识域之外的多个物理层标识中选取一个物理层标识；在随机接入过程中，将选取的物理层标识携带于响应消息中发送出去。
可选的，所述响应消息为消息2或消息4。
可选的，所述在随机接入过程中，将选取的物理层标识携带于响应消息中发送出去包括：接收终端节点发送的消息1，所述消息1中包括所述终端节点在用于竞争接入的物理层标识域中随机选择的物理层标识；采用所述随机选择的物理层标识加扰消息2中的响应消息，所述响应消息包括所述选取的物理层标识；接收所述终端节点发送的消息3；所述消息3中的数据是利用响应消息2中携带的所述选取的物理层标识加扰的，或者所述消息3承载所述选取的物理层标识；通过所述选取的物理层标识加扰消息4的调度控制信息，并发送消息4，以供所述终端节点利用所述选取的物理层标识接收所述消息4。
可选的，所述在随机接入过程中，将选取的物理层标识携带于响应消息中发送出去包括：接收终端节点发送的消息1，所述消息1中包括所述终端节点在用于竞争接入的物理层标识域中随机选择的物理层标识；采用所述随机选择的物理层标识加扰消息2中的响应消息；接收所述终端节点发送的消息3，所述终端节点利用所述消息1 中的物理层标识加扰所述消息3中的数据，所述消息3中还承载所述终端节点自身标识；通过所述随机选择的物理层标识加扰消息4，并发送消息4，所述消息4中的响应消息包括所述选取的物理层标识以及终端节点的竞争解决标识。
可选的，所述终端节点利用所述随机选择的物理层标识接收所述消息4。
可选的，如果所述消息4中的竞争解决标识与所述终端节点上报的用于冲突解决的标识相一致，则所述终端节点将所述选取的物理层标识保存为单播物理层标识。
为解决上述技术问题，本发明实施例还公开了一种单播物理层标识确定方法，用于终端节点，单播物理层标识确定方法包括：在随机接入过程中，接收来自管理节点的响应消息，所述管理节点在用于竞争接入的物理层标识域之外的多个物理层标识中选取一个物理层标识，并在随机接入过程中，将选取的物理层标识携带于响应消息中发送出去；基于所述响应消息确定单播物理层标识。
可选的，所述基于所述响应消息确定单播物理层标识包括：向管理节点发送消息1；接收所述管理节点发送的消息2，所述消息2中的响应消息包括所述选取的物理层标识；发送消息3，所述消息3中的数据是利用响应消息2中携带的所述选取的物理层标识加扰的，或者所述消息3承载所述选取的物理层标识；利用所述选取的物理层标识解扰接收所述管理节点发送的消息4。
可选的，所述基于所述响应消息确定单播物理层标识包括：向管理节点发送消息1，所述消息1中包括在用于竞争接入的物理层标识域中随机选择的物理层标识；接收所述管理节点发送的消息2；向所述管理节点发送消息3，所述消息3中的数据是利用所述消息1中的物理层标识加扰的；利用所述随机选择的物理层标识解扰接收所述管理节点发送的消息4，所述消息4中的响应消息包括所述选取的物理层标识。
可选的，所述基于所述响应消息确定单播物理层标识包括：如果所述随机接入过程中消息4中的竞争解决标识与消息3中上报的用于冲突解决的标识相一致，则将所述响应消息中的所述选取的物理层标识保存为单播物理层标识。
本发明实施例还公开了一种单播物理层标识指示装置，单播物理层标识指示装置包括：物理层标识选取模块，用于在用于竞争接入的物理层标识域之外的多个物理层标识中选取一个物理层标识；物理层标识发送模块，用于在随机接入过程中，将选取的物理层标识携带于响应消息中发送出去。
本发明实施例还公开了一种单播物理层标识确定装置，单播物理层标识确定装置包括：响应消息接收模块，用于在随机接入过程中，接收来自管理节点的响应消息，所述管理节点在用于竞争接入的物理层标识域之外的多个物理层标识中选取一个物理层标识，并在随机接入过程中，将选取的物理层标识携带于响应消息中发送出去；单播物理层标识确定模块，用于基于所述响应消息确定单播物理层标识。
本发明实施例还公开了一种存储介质，其上存储有计算机程序，所述计算机程序被处理器运行时执行所述单播物理层标识指示方法的步骤，或者所述单播物理层标识确定方法的步骤。
本发明实施例还公开了一种车载设备，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程序，所述处理器运行所述计算机程序时执行所述单播物理层标识指示方法的步骤，或者单播物理层标识确定方法的步骤。
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：
本发明技术方案通过在随机接入过程中，指示不在竞争接入的物理层标识域内的物理层标识供终端节点使用，也即相对于现有技术提前为终端节点分配单播物理层标识，能够避免终端节点在从无线资源控制RRC建立消息到安全激活过程仍需要用公共的物理层标识接收 信令数据，从而避免数据传输冲突，保证终端节点数据的顺利传输。
附图说明
图1是本发明实施例一种单播物理层标识指示方法的流程图；
图2是图1所示步骤S102的一种具体实施方式的流程图；
图3是本发明实施例一种具体应用场景的示意图；
图4是图1所示步骤S102的一种具体实施方式的流程图；
图5是本发明实施例一种单播物理层标识确定方法的流程图；
图6是本发明实施例一种单播物理层标识指示装置的结构示意图；
图7是本发明实施例一种单播物理层标识确定装置的结构示意图。
具体实施方式
如背景技术中所述，当前车载短距离通信终端节点所用单播物理层标识是在安全建立之后分配的，从无线资源控制(Radio Resource Control,RRC)建立消息到安全激活过程，终端节点仍需要用公共的物理层标识接收信令数据，导致数据传输冲突。
本发明技术方案通过在随机接入过程中，指示不在竞争接入的物理层标识域内的物理层标识供终端节点使用，也即相对于现有技术提前为终端节点分配单播物理层标识，能够避免终端节点在从无线资源控制RRC建立消息到安全激活过程仍需要用公共的物理层标识接收信令数据，从而避免数据传输冲突，保证终端节点数据的顺利传输。
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。
图1是本发明实施例一种单播物理层标识指示方法的流程图。
本发明实施例的单播物理层标识指示方法可以用于车载短距离通信系统中的管理节点。所述管理节点可以是适当的车载设备。所述管理节点可以执行图1所示方法的各个步骤，以实现对车载短距离通信系统中的终端节点指示单播物理层标识。所述终端节点可以是适当的车载设备。
具体地，图1所示方法可以包括以下步骤：
步骤S101：在用于竞争接入的物理层标识域之外的多个物理层标识中选取一个物理层标识；
步骤S102：在随机接入过程中，将选取的物理层标识携带于响应消息中发送出去。
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。
可以理解的是，在具体实施中，所述单播物理层标识指示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。
本实施例中，步骤S101的实施时机可以是在随机接入过程之前，也可以是在随机接入过程中。
具体而言，物理层标识至少包含非竞争接入的物理层标识域和竞争接入的物理层标识域。管理节点可以是选取不在竞争接入的物理层标识域的物理层标识，也即可以在非竞争接入的物理层标识域或者其他物理层标识域内选取物理层标识。具体的选取方式可以是随机选取，也可以是其他任意可实施的方式，本发明实施例对此不作限制。
进而在步骤S102的具体实施中，管理节点可以通过随机接入过程中的响应消息将选取的物理层标识发送给终端节点。
本发明实施例通过在随机接入过程中，指示不在竞争接入的物理层标识域内的物理层标识供终端节点使用，也即相对于现有技术提前 为终端节点分配单播物理层标识，能够避免终端节点在从无线资源控制RRC建立消息到安全激活过程仍需要用公共的物理层标识接收信令数据，从而避免数据传输冲突，保证终端节点数据的顺利传输。
在本发明一个非限制性的实施例中，所述响应消息为消息2或消息4。
具体地，消息1和消息3是终端节点发送给管理节点的，消息2和消息4是管理节点发送给终端节点的。因此，管理节点选取的物理层标识可以携带于消息2或消息4中发送给终端节点。
在本发明一个非限制性的实施例中，请参照图2，图1所示步骤S102可以包括以下步骤：
步骤S201：接收终端节点发送的消息1，所述消息1中包括所述终端节点在用于竞争接入的物理层标识域中随机选择的物理层标识；
步骤S202：采用所述随机选择的物理层标识加扰消息2中的响应消息，所述响应消息包括所述选取的物理层标识；
步骤S203：接收所述终端节点发送的消息3，所述消息3中的数据是利用响应消息2中携带的所述选取的物理层标识加扰的，或者所述消息3承载所述选取的物理层标识；
步骤S204：通过所述选取的物理层标识加扰消息4的调度控制信息，并发送消息4，以供所述终端节点利用所述选取的物理层标识接收所述消息4。
本实施例中，管理节点在消息2中将选取的物理层标识发送给终端节点，终端节点可以利用该选取的物理层标识接收消息4。如果后续该终端节点竞争成功，则继续使用该选取的物理层标识接收后续信令。
具体地，管理节点利用消息1中携带的随机选择的物理层标识加扰消息2，终端节点利用消息2中携带的选取的物理层标识加扰消息 3，关联节点利用该选取的物理层标识加扰消息4。相应地，终端节点利用随机选择的物理层标识解扰消息2，管理节点利用选取的物理层标识解扰消息3，终端节点利用选取的物理层标识解扰消息4。
一并参照图3，图3示出了管理节点31和终端节点32在随机接入过程中的交互过程。
在步骤3.1中，终端节点32在用于竞争接入的物理层标识域中随机选择物理层标识。
在步骤3.2中，终端节点32发送消息1(Msg1)，消息1中携带随机选择的物理层标识。
在步骤3.3中，管理节点31在用于竞争接入的物理层标识域之外的多个物理层标识中选取一个物理层标识，采用消息1中随机选择的物理层标识加扰消息2中的响应消息。
在步骤3.4中，管理节点31发送消息2(Msg2)，消息2中包括选取的物理层标识。
在步骤3.5中，终端节点32发送消息3(Msg3)，消息3中包括用于冲突解决的标识，例如可以是小区无线网络临时标识(Cell Radio Network Temporary Identity,C-RNTI)。
在步骤3.6中，管理节点31发送消息4(Msg4)，消息4中包括冲突解决的标识。
至此，随机接入过程完成。终端节点32可以在后续步骤中通过比对消息3中的冲突解决标识与消息4中的冲突解决标识来判断自身是否竞争成功。
在本发明另一个非限制性的实施例中，请参照图4，图1所示步骤S102可以包括以下步骤：
步骤S401：接收终端节点发送的消息1，所述消息1中包括所述终端节点在用于竞争接入的物理层标识域中随机选择的物理层标识；
步骤S402：采用所述随机选择的物理层标识加扰消息2中的响应消息；
步骤S403：接收所述终端节点发送的消息3，所述终端节点利用所述消息1中的物理层标识加扰所述消息3中的数据，所述消息3中还承载所述终端节点自身标识；
步骤S404：通过所述随机选择的物理层标识加扰消息4，并发送消息4，所述消息4中的响应消息包括所述选取的物理层标识以及终端节点的竞争解决标识。
与图2和图3所示实施例不同的是，本实施例中管理节点是在消息4中将选取的物理层标识发送给终端节点。
与现有技术中管理节点与终端节点的随机接入过程不同的是，消息4中不仅包括用于冲突解决的标识，还可以包括选取的物理层标识。
具体地，终端节点在用于竞争接入的物理层标识域中随机选择物理层标识。终端节点发送消息1(Msg1)，消息1中携带随机选择的物理层标识。
管理节点在用于竞争接入的物理层标识域之外的多个物理层标识中选取一个物理层标识，采用消息1中随机选择的物理层标识加扰消息2中的响应消息。管理节点发送消息2(Msg2)。
终端节点发送消息3(Msg3)，消息3中包括用于冲突解决的标识，例如可以是C-RNTI。
与前述实施例不同的是，管理节点利用随机选择的物理层标识加扰消息4，并发送消息4(Msg4)，消息4中包括冲突解决的标识以及选取的物理层标识。终端节点利用消息1中的物理层标识接收消息4。
进一步而言，所述终端节点利用所述随机选择的物理层标识接收所述消息4。也即终端节点利用消息1中终端节点随机选择的物理层 标识接收消息4。
进一步而言，如果所述消息4中的竞争解决标识与所述终端节点上报的用于冲突解决的标识相一致，表示终端节点竞争成功，则所述终端节点将所述选取的物理层标识保存为单播物理层标识，以用于后续信令的调度。
在图5所示实施例中，单播物理层标识确定方法可以用于车载短距离通信系统中的终端节点。所述终端节点可以是适当的车载设备。所述终端节点可以执行图5所示方法的各个步骤。
具体而言，图5所述方法可以包括以下步骤：
步骤S501：在随机接入过程中，接收来自管理节点的响应消息，所述管理节点在用于竞争接入的物理层标识域之外的多个物理层标识中选取一个物理层标识，并在随机接入过程中，将选取的物理层标识携带于响应消息中发送出去；
步骤S502：基于所述响应消息确定单播物理层标识。
本实施例中，终端节点可以通过随机接入过程中的响应消息确定单播物理层标识，避免使用公共的物理层标识接收信令数据，保证数据的顺利传输。
在一个具体实施例中，图5所示步骤S502可以包括以下步骤：如果所述随机接入过程中消息4中的竞争解决标识与消息3中上报的用于冲突解决的标识相一致，则将所述响应消息中的所述选取的物理层标识保存为单播物理层标识。
关于单播物理层标识确定方法的工作原理、工作方式的更多内容，可以参照图1至图4中的相关描述，这里不再赘述。
请参照图6，图6所示单播物理层标识指示装置60可以用于管理节点侧，也即可以内置或外部耦接于所述管理节点。单播物理层标识指示装置60可以包括：
物理层标识选取模块601，用于在用于竞争接入的物理层标识域之外的多个物理层标识中选取一个物理层标识；
物理层标识发送模块602，用于在随机接入过程中，将选取的物理层标识携带于响应消息中发送出去。
关于所述单播物理层标识指示装置60的工作原理、工作方式的更多内容，可以参照图1至图5中的相关描述，这里不再赘述。
在具体实施中，上述单播物理层标识指示装置60可以对应于管理节点中具有通信功能的芯片，例如片上系统(System-On-a-Chip，SOC)、基带芯片等；或者对应于管理节点中包括具有通信功能的芯片模组；或者对应于具有数据处理功能芯片的芯片模组，或者对应于管理节点。
请参照图7，图7所示单播物理层标识确定装置70可以用于终端节点侧，也即可以内置或外部耦接于所述终端节点。单播物理层标识确定装置70可以包括：
响应消息接收模块701，用于在随机接入过程中，接收来自管理节点的响应消息，所述管理节点在用于竞争接入的物理层标识域之外的多个物理层标识中选取一个物理层标识，并在随机接入过程中，将选取的物理层标识携带于响应消息中发送出去；
单播物理层标识确定模块702，用于基于所述响应消息确定单播物理层标识。
关于所述单播物理层标识确定装置70的工作原理、工作方式的更多内容，可以参照图1至图5中的相关描述，这里不再赘述。
在具体实施中，上述单播物理层标识确定装置70可以对应于终端节点中具有通信功能的芯片，例如片上系统(System-On-a-Chip，SOC)、基带芯片等；或者对应于终端节点中包括具有通信功能的芯片模组；或者对应于具有数据处理功能芯片的芯片模组，或者对应于终端节点。
关于上述实施例中描述的各个装置、产品包含的各个模块/单元，其可以是软件模块/单元，也可以是硬件模块/单元，或者也可以部分是软件模块/单元，部分是硬件模块/单元。例如，对于应用于或集成于芯片的各个装置、产品，其包含的各个模块/单元可以都采用电路等硬件的方式实现，或者，至少部分模块/单元可以采用软件程序的方式实现，该软件程序运行于芯片内部集成的处理器，剩余的(如果有)部分模块/单元可以采用电路等硬件方式实现；对于应用于或集成于芯片模组的各个装置、产品，其包含的各个模块/单元可以都采用电路等硬件的方式实现，不同的模块/单元可以位于芯片模组的同一组件(例如芯片、电路模块等)或者不同组件中，或者，至少部分模块/单元可以采用软件程序的方式实现，该软件程序运行于芯片模组内部集成的处理器，剩余的(如果有)部分模块/单元可以采用电路等硬件方式实现；对于应用于或集成于终端的各个装置、产品，其包含的各个模块/单元可以都采用电路等硬件的方式实现，不同的模块/单元可以位于终端内同一组件(例如，芯片、电路模块等)或者不同组件中，或者，至少部分模块/单元可以采用软件程序的方式实现，该软件程序运行于终端内部集成的处理器，剩余的(如果有)部分模块/单元可以采用电路等硬件方式实现。
本发明实施例还公开了一种存储介质，所述存储介质为计算机可读存储介质，其上存储有计算机程序，所述计算机程序运行时可以执行图1至图5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。
本发明实施例还公开了一种车载设备，所述车载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程序。所述处理器运行所述计算机程序时可以执行图1至图5中所示方法的步骤。所述车载设备包括但不限于车载音频设备、车载视频设备、防盗系统、智能手机、智能穿戴设备等终端设备。
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。

Claims (14)

  1. 一种单播物理层标识指示方法，用于管理节点，其特征在于，包括：
    在用于竞争接入的物理层标识域之外的多个物理层标识中选取一个物理层标识；
    在随机接入过程中，将选取的物理层标识携带于响应消息中发送出去。
  2. 根据权利要求1所述的单播物理层标识指示方法，其特征在于，所述响应消息为消息2或消息4。
  3. 根据权利要求1所述的单播物理层标识指示方法，其特征在于，所述在随机接入过程中，将选取的物理层标识携带于响应消息中发送出去包括：
    接收终端节点发送的消息1，所述消息1中包括所述终端节点在用于竞争接入的物理层标识域中随机选择的物理层标识；
    采用所述随机选择的物理层标识加扰消息2中的响应消息，所述响应消息包括所述选取的物理层标识；
    接收所述终端节点发送的消息3，所述消息3中的数据是利用响应消息2中携带的所述选取的物理层标识加扰的，或者所述消息3承载所述选取的物理层标识；
    通过所述选取的物理层标识加扰消息4的调度控制信息，并发送消息4，以供所述终端节点利用所述选取的物理层标识接收所述消息4。
  4. 根据权利要求1所述的单播物理层标识指示方法，其特征在于，所述在随机接入过程中，将选取的物理层标识携带于响应消息中发送出去包括：
    接收终端节点发送的消息1，所述消息1中包括所述终端节点在用于竞争接入的物理层标识域中随机选择的物理层标识；
    采用所述随机选择的物理层标识加扰消息2中的响应消息；
    接收所述终端节点发送的消息3，所述终端节点利用所述消息1中的物理层标识加扰所述消息3中的数据，所述消息3中还承载所述终端节点自身标识；
    通过所述随机选择的物理层标识加扰消息4，并发送消息4，所述消息4中的响应消息包括所述选取的物理层标识以及终端节点的竞争解决标识。
  5. 根据权利要求4所述的单播物理层标识指示方法，其特征在于，所述终端节点利用所述随机选择的物理层标识接收所述消息4。
  6. 根据权利要求3或4所述的单播物理层标识指示方法，其特征在于，如果所述消息4中的竞争解决标识与所述终端节点上报的用于冲突解决的标识相一致，则所述终端节点将所述选取的物理层标识保存为单播物理层标识。
  7. 一种单播物理层标识确定方法，用于终端节点，其特征在于，包括：
    在随机接入过程中，接收来自管理节点的响应消息，所述管理节点在用于竞争接入的物理层标识域之外的多个物理层标识中选取一个物理层标识，并在随机接入过程中，将选取的物理层标识携带于发给终端节点的响应消息中发送出去；
    基于所述响应消息确定单播物理层标识。
  8. 根据权利要求7所述的单播物理层标识确定方法，其特征在于，所述基于所述响应消息确定单播物理层标识包括：
    向管理节点发送消息1；
    接收所述管理节点发送的消息2，所述消息2中的响应消息包括所述选取的物理层标识；
    发送消息3，所述消息3中的数据是利用响应消息2中携带的所述选取的物理层标识加扰的，或者所述消息3承载所述选取的物理层标识；
    利用所述选取的物理层标识解扰接收所述管理节点发送的消息4。
  9. 根据权利要求7所述的单播物理层标识确定方法，其特征在于，所述基于所述响应消息确定单播物理层标识包括：
    向管理节点发送消息1，所述消息1中包括在用于竞争接入的物理层标识域中随机选择的物理层标识；
    接收所述管理节点发送的消息2；
    向所述管理节点发送消息3，所述消息3中的数据是利用所述消息1中的物理层标识加扰的；
    利用所述随机选择的物理层标识解扰接收所述管理节点发送的消息4，所述消息4中的响应消息包括所述选取的物理层标识。
  10. 根据权利要求7所述的单播物理层标识确定方法，其特征在于，所述基于所述响应消息确定单播物理层标识包括：
    如果所述随机接入过程中消息4中的竞争解决标识与消息3中上报的用于冲突解决的标识相一致，则将所述响应消息中的所述选取的物理层标识保存为单播物理层标识。
  11. 一种单播物理层标识指示装置，用于管理节点，其特征在于，包括：
    物理层标识选取模块，用于在用于竞争接入的物理层标识域之外的多个物理层标识中选取一个物理层标识；
    物理层标识发送模块，用于在随机接入过程中，将选取的物理层 标识携带于响应消息中发送出去。
  12. 一种单播物理层标识确定装置，用于终端节点，其特征在于，包括：
    响应消息接收模块，用于在随机接入过程中，接收来自管理节点的响应消息，所述管理节点在用于竞争接入的物理层标识域之外的多个物理层标识中选取一个物理层标识，并在随机接入过程中，将选取的物理层标识携带于响应消息中发送出去；
    单播物理层标识确定模块，用于基于所述响应消息确定单播物理层标识。
  13. 一种存储介质，其上存储有计算机程序，其特征在于，所述计算机程序被处理器运行时执行权利要求1至6中任一项所述单播物理层标识指示方法的步骤，或者权利要求7至10任一项所述单播物理层标识确定方法的步骤。
  14. 一种车载设备，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程序，其特征在于，所述处理器运行所述计算机程序时执行权利要求1至6中任一项所述单播物理层标识指示方法的步骤，或者权利要求7至10任一项所述单播物理层标识确定方法的步骤。
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