Unicast physical layer identification indication, determination method and device, storage medium, and vehicle-mounted equipment

Abstract

A unicast physical layer identification indication, determination method and device, storage medium, and vehicle-mounted equipment, wherein the unicast physical layer identification indication method comprises: selecting a physical layer identification from multiple physical layer identifications outside the physical layer identification domain for competitive access; and in the random access process, sending the selected physical layer identification carried in a response message. The technical solution of the present invention can ensure the smooth transmission of terminal node data.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a unicast physical layer identification indication, determination method and device, storage medium, and vehicle-mounted equipment. Background Art

[0002] The vehicle short-range communication system is a system for interconnection and communication between vehicle-mounted devices, including cockpit domain controllers, vehicle-mounted terminals (such as vehicle-mounted audio equipment, vehicle-mounted video equipment, anti-theft systems), smart phones, and smart wearable devices. The vehicle short-range communication system includes management nodes and terminal nodes, among which the management node is the node that sends data scheduling information for the vehicle-mounted wireless short-range communication system; the terminal node is responsible for the vehicle-mounted wireless short-range communication system to receive data scheduling information and send data according to the data scheduling information. The physical layer identifier is an identifier used for physical layer addressing.

[0003] All terminal nodes support the physical layer initial access process (referred to as the random access process), so that the management node obtains the terminal node information. The terminal node performs random access based on the physical layer identifier, and the physical layer identifier at least includes a physical layer identifier field for non-competitive access and a physical layer identifier field for competitive access. The management node is responsible for maintaining the mapping relationship between the terminal nodes and the physical layer identifiers of the communication domain. The physical layer identifier is used to uniquely identify the terminal node in the communication domain. The physical layer identifier can be pre-configured 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 competitive access. When the management node communication domain system broadcast message only contains competitive access resource configuration, all terminal nodes (including on-board devices and non-on-board devices) adopt competitive access.

[0004] However, the unicast physical layer identifier used by the current on-board short-range communication terminal node is allocated after security is established. From the establishment of the radio resource control (RRC) message to the security activation process, the terminal node still needs to use a public physical layer identifier to receive signaling data, resulting in data transmission conflicts. Summary of the invention

[0005] The technical problem solved by the present invention is how to ensure smooth transmission of terminal node data.

[0006] To solve the above technical problems, an embodiment of the present invention provides a unicast physical layer identifier indication method, which includes: selecting a physical layer identifier from multiple physical layer identifiers outside the physical layer identifier domain used for competitive access; during the random access process, carrying the selected physical layer identifier in a response message and sending it out.

[0007] Optionally, the response message is message 2 or message 4.

[0008] Optionally, during the random access process, sending out the selected physical layer identifier in a response message includes: receiving message 1 sent by the terminal node, the message 1 including the physical layer identifier randomly selected by the terminal node in the physical layer identifier field used for competitive access; scrambling the response message in message 2 using the randomly selected physical layer identifier, the response message including the selected physical layer identifier; receiving message 3 sent by the terminal node; the data in message 3 is scrambled using the selected physical layer identifier carried in the response message 2, or the message 3 carries the selected physical layer identifier; scrambling the scheduling control information of message 4 using the selected physical layer identifier, and sending message 4 so that the terminal node can receive the message 4 using the selected physical layer identifier.

[0009] Optionally, during the random access process, sending out the selected physical layer identifier in a response message includes: receiving message 1 sent by the terminal node, the message 1 including the physical layer identifier randomly selected by the terminal node in the physical layer identifier field used for contention access; scrambling the response message in message 2 with the randomly selected physical layer identifier; receiving message 3 sent by the terminal node, the terminal node scrambling the data in the message 3 using the physical layer identifier in the message 1, the message 3 also carrying the terminal node's own identifier; scrambling message 4 with the randomly selected physical layer identifier, and sending message 4, the response message in the message 4 including the selected physical layer identifier and the contention resolution identifier of the terminal node.

[0010] Optionally, the terminal node receives the message 4 using the randomly selected physical layer identifier.

[0011] Optionally, if the contention resolution identifier in the message 4 is consistent with the identifier for conflict resolution reported by the terminal node, the terminal node saves the selected physical layer identifier as a unicast physical layer identifier.

[0012] In order to solve the above technical problems, an embodiment of the present invention also discloses a unicast physical layer identifier determination method for a terminal node, and the unicast physical layer identifier determination method includes: receiving a response message from a management node during a random access process, the management node selecting a physical layer identifier from multiple physical layer identifiers outside a physical layer identifier domain used for competitive access, and during the random access process, carrying the selected physical layer identifier in a response message and sending it out; determining the unicast physical layer identifier based on the response message.

[0013] Optionally, 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, the response message in message 2 including the selected physical layer identifier; sending message 3, the data in message 3 is encrypted using the selected physical layer identifier carried in the response message 2, or message 3 carries the selected physical layer identifier; and de-encrypting the received message 4 sent by the management node using the selected physical layer identifier.

[0014] Optionally, determining the unicast physical layer identifier based on the response message includes: sending message 1 to the management node, wherein the message 1 includes a physical layer identifier randomly selected in a physical layer identifier field used for competitive access; receiving a message 2 sent by the management node; sending a message 3 to the management node, wherein the data in the message 3 is scrambled using the physical layer identifier in the message 1; and descrambling the received message 4 sent by the management node using the randomly selected physical layer identifier, wherein the response message in the message 4 includes the selected physical layer identifier.

[0015] Optionally, determining the unicast physical layer identifier based on the response message includes: if the contention resolution identifier in message 4 during the random access process is consistent with the identifier for conflict resolution reported in message 3, then saving the selected physical layer identifier in the response message as the unicast physical layer identifier.

[0016] An embodiment of the present invention also discloses a unicast physical layer identifier indicating device, which includes: a physical layer identifier selection module, used to select a physical layer identifier from multiple physical layer identifiers outside the physical layer identifier domain used for competitive access; a physical layer identifier sending module, used to carry the selected physical layer identifier in a response message and send it out during a random access process.

[0017] An embodiment of the present invention also discloses a unicast physical layer identifier determination device, which includes: a response message receiving module, which is used to receive a response message from a management node during a random access process, wherein the management node selects a physical layer identifier from multiple physical layer identifiers outside a physical layer identifier domain used for competitive access, and during 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, which is used to determine the unicast physical layer identifier based on the response message.

[0018] The embodiment of the present invention further discloses a storage medium on which a computer program is stored. When the computer program is executed by a processor, the steps of the unicast physical layer identifier indication method or the steps of the unicast physical layer identifier determination method are executed.

[0019] An embodiment of the present invention also discloses a vehicle-mounted device, including a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and when the processor runs the computer program, it executes the steps of the unicast physical layer identification indication method or the steps of the unicast physical layer identification determination method.

[0020] Compared with the prior art, the technical solution of the embodiment of the present invention has the following beneficial effects:

[0021] The technical solution of the present invention indicates that the physical layer identifier that is not in the physical layer identifier domain of the contention access is for use by the terminal node during the random access process, that is, compared with the prior art, a unicast physical layer identifier is allocated to the terminal node in advance, which can avoid the terminal node still needing to use a public physical layer identifier to receive signaling data during the process from the establishment of the wireless resource control RRC message to the security activation process, thereby avoiding data transmission conflicts and ensuring the smooth transmission of terminal node data. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a flow chart of a unicast physical layer identification indication method according to an embodiment of the present invention;

[0023] Figure 2 yes Figure 1 A flowchart of a specific implementation of step S102 is shown;

[0024] Figure 3 is a schematic diagram of a specific application scenario of an embodiment of the present invention;

[0025] Figure 4 yes Figure 1 A flowchart of a specific implementation of step S102 is shown;

[0026] Figure 5 is a flow chart of a method for determining a unicast physical layer identifier according to an embodiment of the present invention;

[0027] Figure 6 It is a structural schematic diagram of a unicast physical layer identification indicating device according to an embodiment of the present invention;

[0028] Figure 7 It is a structural diagram of a unicast physical layer identifier determination device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0029] As described in the background technology, the unicast physical layer identifier used by the current vehicle-mounted short-range communication terminal node is allocated after security is established. From the establishment of the radio resource control (RRC) message to the security activation process, the terminal node still needs to use a public physical layer identifier to receive signaling data, resulting in data transmission conflicts.

[0030] The technical solution of the present invention indicates that the physical layer identifier that is not in the physical layer identifier domain of the contention access is for use by the terminal node during the random access process, that is, compared with the prior art, a unicast physical layer identifier is allocated to the terminal node in advance, which can avoid the terminal node still needing to use a public physical layer identifier to receive signaling data during the process from the establishment of the wireless resource control RRC message to the security activation process, thereby avoiding data transmission conflicts and ensuring the smooth transmission of terminal node data.

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0032] Figure 1 The present invention is a flowchart of a unicast physical layer identification indication method according to an embodiment of the present invention.

[0033] The unicast physical layer identification indication method of the embodiment of the present invention can be used for a management node in a vehicle-mounted short-range communication system. The management node can be an appropriate vehicle-mounted device. The management node can execute Figure 1 The various steps of the method shown are used to indicate a unicast physical layer identifier to a terminal node in a vehicle-mounted short-range communication system. The terminal node may be a suitable vehicle-mounted device.

[0034] Specifically, Figure 1 The method shown may include the following steps:

[0035] Step S101: selecting a physical layer identifier from a plurality of physical layer identifiers outside the physical layer identifier domain used for contention access;

[0036] Step S102: During the random access process, the selected physical layer identifier is carried in a response message and sent out.

[0037] It should be pointed out that the serial numbers of the steps in this embodiment do not limit the execution order of the steps.

[0038] In this embodiment, step S101 may be performed before the random access process or during the random access process.

[0039] Specifically, the physical layer identifier at least includes a physical layer identifier field for non-competitive access and a physical layer identifier field for competitive access. The management node may select a physical layer identifier that is not in a physical layer identifier field for competitive access, that is, the physical layer identifier may be selected in a physical layer identifier field for non-competitive access or in other physical layer identifier fields. The specific selection method may be random selection or any other feasible method, which is not limited in the embodiments of the present invention.

[0040] Furthermore, in the specific implementation of step S102, the management node may send the selected physical layer identifier to the terminal node through a response message in the random access process.

[0041] The embodiment of the present invention indicates that the physical layer identifier that is not in the physical layer identifier domain of the contention access is for use by the terminal node during the random access process, that is, compared with the prior art, a unicast physical layer identifier is allocated to the terminal node in advance. This can avoid the terminal node still needing to use a public physical layer identifier to receive signaling data from the wireless resource control RRC establishment message to the security activation process, thereby avoiding data transmission conflicts and ensuring smooth transmission of terminal node data.

[0042] In a non-limiting embodiment of the present invention, the response message is message 2 or message 4.

[0043] Specifically, messages 1 and 3 are sent from the terminal node to the management node, and messages 2 and 4 are sent from the management node to the terminal node. Therefore, the physical layer identifier selected by the management node can be carried in message 2 or message 4 and sent to the terminal node.

[0044] In a non-limiting embodiment of the present invention, please refer to Figure 2 , Figure 1 The step S102 shown may include the following steps:

[0045] Step S201: receiving a message 1 sent by a terminal node, wherein the message 1 includes a physical layer identifier randomly selected by the terminal node in a physical layer identifier field for contention access;

[0046] Step S202: using the randomly selected physical layer identifier to scramble the response message in message 2, wherein the response message includes the selected physical layer identifier;

[0047] Step S203: receiving a message 3 sent by the terminal node, wherein the data in the message 3 is scrambled using the selected physical layer identifier carried in the response message 2, or the message 3 carries the selected physical layer identifier;

[0048] Step S204: scramble the scheduling control information of message 4 by the selected physical layer identifier, and send message 4 so that the terminal node can receive message 4 by using the selected physical layer identifier.

[0049] In this embodiment, the management node sends the selected physical layer identifier to the terminal node in message 2, and the terminal node can use the selected physical layer identifier to receive message 4. If the terminal node succeeds in the competition later, it continues to use the selected physical layer identifier to receive subsequent signaling.

[0050] Specifically, the management node scrambles message 2 using the randomly selected physical layer identifier carried in message 1, the terminal node scrambles message 3 using the selected physical layer identifier carried in message 2, and the associated node scrambles message 4 using the selected physical layer identifier. Accordingly, 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.

[0051] Refer to Figure 3 , Figure 3 The diagram shows the interaction process between the management node 31 and the terminal node 32 during the random access process.

[0052] In step 3.1, the terminal node 32 randomly selects a physical layer identifier in the physical layer identifier field used for contention access.

[0053] In step 3.2, the terminal node 32 sends a message 1 (Msg1), which carries a randomly selected physical layer identifier.

[0054] In step 3.3, the management node 31 selects a physical layer identifier from multiple physical layer identifiers outside the physical layer identifier domain used for contention access, and uses the randomly selected physical layer identifier in message 1 to scramble the response message in message 2.

[0055] In step 3.4, the management node 31 sends a message 2 (Msg2), which includes the selected physical layer identifier.

[0056] In step 3.5, the terminal node 32 sends a message 3 (Msg3), which includes an identifier for conflict resolution, such as a Cell Radio Network Temporary Identity (C-RNTI).

[0057] In step 3.6, the management node 31 sends a message 4 (Msg4), which includes a conflict resolution identifier.

[0058] At this point, the random access process is completed. In subsequent steps, the terminal node 32 can compare the conflict resolution identifier in the message 3 with the conflict resolution identifier in the message 4 to determine whether it has successfully competed.

[0059] In another non-limiting embodiment of the present invention, please refer to Figure 4 , Figure 1 The step S102 shown may include the following steps:

[0060] Step S401: receiving a message 1 sent by a terminal node, wherein the message 1 includes a physical layer identifier randomly selected by the terminal node in a physical layer identifier field for contention access;

[0061] Step S402: using the randomly selected physical layer identifier to scramble the response message in message 2;

[0062] Step S403: receiving a message 3 sent by the terminal node, the terminal node scrambling the data in the message 3 using the physical layer identifier in the message 1, and the message 3 also carries the terminal node's own identifier;

[0063] Step S404: scramble message 4 with the randomly selected physical layer identifier and send message 4, wherein the response message in message 4 includes the selected physical layer identifier and the contention resolution identifier of the terminal node.

[0064] and Figure 2 and Figure 3 The difference from the illustrated embodiment is that in this embodiment, the management node sends the selected physical layer identifier to the terminal node in message 4.

[0065] Different from the random access process of the management node and the terminal node in the prior art, the message 4 includes not only an identifier for conflict resolution but also a selected physical layer identifier.

[0066] Specifically, the terminal node randomly selects a physical layer identifier in the physical layer identifier field used for contention access. The terminal node sends a message 1 (Msg1), which carries the randomly selected physical layer identifier.

[0067] The management node selects a physical layer identifier from multiple physical layer identifiers outside the physical layer identifier field used 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).

[0068] The terminal node sends a message 3 (Msg3), which includes an identifier used for conflict resolution, such as a C-RNTI.

[0069] Different from the above embodiment, the management node scrambles message 4 with a randomly selected physical layer identifier and sends message 4 (Msg4), which includes the conflict resolution identifier and the selected physical layer identifier. The terminal node receives message 4 using the physical layer identifier in message 1.

[0070] Furthermore, the terminal node receives the message 4 using the randomly selected physical layer identifier. That is, the terminal node receives the message 4 using the randomly selected physical layer identifier in the message 1.

[0071] Furthermore, if the contention resolution identifier in the message 4 is consistent with the identifier for conflict resolution reported by the terminal node, indicating that the terminal node competition is successful, the terminal node saves the selected physical layer identifier as a unicast physical layer identifier for scheduling subsequent signaling.

[0072] exist Figure 5 In the illustrated embodiment, the unicast physical layer identification determination method can be used for a terminal node in a vehicle-mounted short-range communication system. The terminal node can be a suitable vehicle-mounted device. The terminal node can execute Figure 5 The individual steps of the method are shown.

[0073] Specifically, Figure 5 The method may include the following steps:

[0074] Step S501: receiving a response message from a management node during a random access process, wherein the management node selects a physical layer identifier from multiple physical layer identifiers outside the physical layer identifier domain for contention access, and sends the selected physical layer identifier in a response message during the random access process;

[0075] Step S502: Determine a unicast physical layer identifier based on the response message.

[0076] In this embodiment, the terminal node can determine the unicast physical layer identifier through the response message in the random access process, avoid using the public physical layer identifier to receive signaling data, and ensure smooth data transmission.

[0077] In a specific embodiment, Figure 5 The shown step S502 may include the following steps: if the contention resolution identifier in message 4 during 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.

[0078] For more information about the working principle and working mode of the unicast physical layer identification determination method, please refer to Figures 1 to 4 The relevant description in will not be repeated here.

[0079] Please refer to Figure 6 , Figure 6 The unicast physical layer identification indicating device 60 shown can be used at 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 can include:

[0080] 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 domain used for contention access;

[0081] The physical layer identifier sending module 602 is used to send the selected physical layer identifier in a response message during the random access process.

[0082] For more information about the working principle and working method of the unicast physical layer identification indication device 60, please refer to Figures 1 to 5 The relevant description in will not be repeated here.

[0083] Please refer to Figure 7 , Figure 7 The unicast physical layer identification determination device 70 shown can be used at the terminal node side, that is, it can be built-in or externally coupled to the terminal node. The unicast physical layer identification determination device 70 can include:

[0084] A response message receiving module 701 is used to receive a response message from a management node during a random access process, wherein the management node selects a physical layer identifier from multiple physical layer identifiers outside the physical layer identifier domain used for contention access, and sends the selected physical layer identifier in a response message during the random access process;

[0085] The unicast physical layer identifier determination module 702 is configured to determine a unicast physical layer identifier based on the response message.

[0086] For more information about the working principle and working method of the unicast physical layer identification determination device 70, please refer to Figures 1 to 5 The relevant description in will not be repeated here.

[0087] The embodiment of the present invention further discloses a storage medium, which is a computer-readable storage medium and stores a computer program. When the computer program is run, it can execute Figures 1 to 5 The steps of the method shown in . The storage medium may include ROM, RAM, magnetic disk or optical disk, etc. The storage medium may also include non-volatile memory (non-volatile) or non-transitory memory, etc.

[0088] The embodiment of the present invention further discloses a vehicle-mounted device, which may include a memory and a processor, wherein the memory stores a computer program that can be run on the processor. When the processor runs the computer program, it can execute Figures 1 to 5 The vehicle-mounted equipment includes but is not limited to vehicle-mounted audio equipment, vehicle-mounted video equipment, anti-theft system, smart phone, smart wearable device and other terminal equipment.

[0089] Although the present invention is disclosed as 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. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A unicast physical layer identification indication method for managing a node, characterized in that: include: Selecting a physical layer identifier from a plurality of physical layer identifiers outside the physical layer identifier domain used for contention access; In the random access process, carrying the selected physical layer identifier in the response message and sending it out, wherein in the random access process, carrying the selected physical layer identifier in the response message and sending it out includes: Receiving a message 1 sent by a terminal node, wherein the message 1 includes a physical layer identifier randomly selected by the terminal node in a physical layer identifier field for contention access; Scrambling the response message in message 2 using the randomly selected physical layer identifier; Receiving a message 3 sent by the terminal node, the terminal node scrambles data in the message 3 using the physical layer identifier in the message 1, and the message 3 also carries the terminal node's own identifier; Message 4 is scrambled by the randomly selected physical layer identifier and sent, wherein the response message in message 4 includes the selected physical layer identifier and the contention resolution identifier of the terminal node.

2. The unicast physical layer identification indication method according to claim 1, characterized in that: The response message is message 2 or message 4.

3. The unicast physical layer identification indication method according to claim 1, characterized in that: The terminal node receives the message 4 using the randomly selected physical layer identifier.

4. The unicast physical layer identification indication method according to claim 1, characterized in that: If the contention resolution identifier in the message 4 is consistent with the identifier for conflict resolution reported by the terminal node, the terminal node saves the selected physical layer identifier as a unicast physical layer identifier.

5. A method for determining a unicast physical layer identifier, used for a terminal node, characterized in that: include: In the random access process, receiving a response message from the management node, the management node selects a physical layer identifier from multiple physical layer identifiers outside the physical layer identifier field used for contention access, and in the random access process, sends the selected physical layer identifier in a response message sent to the terminal node; Determine a unicast physical layer identifier based on the response message; Determining the unicast physical layer identifier based on the response message includes: Sending a message 1 to the management node, wherein the message 1 includes a physical layer identifier randomly selected in a physical layer identifier field for contention access; Receive message 2 sent by the management node; Sending message 3 to the management node, wherein data in the message 3 is scrambled using the physical layer identifier in the message 1; The message 4 sent by the management node is received and descrambled using the randomly selected physical layer identifier, wherein the response message in the message 4 includes the selected physical layer identifier.

6. The method for determining a unicast physical layer identifier according to claim 5, characterized in that: Determining the unicast physical layer identifier based on the response message includes: If the contention resolution identifier in message 4 during the random access process is consistent with the identifier for conflict resolution reported in message 3, the selected physical layer identifier in the response message is saved as a unicast physical layer identifier.

7. A unicast physical layer identification indicating device, used for managing nodes, characterized in that: include: A physical layer identifier selection module, used to select a physical layer identifier from multiple physical layer identifiers outside the physical layer identifier domain used for contention access; A physical layer identifier sending module, used to send the selected physical layer identifier in a response message during random access; The physical layer identifier sending module is also used to receive message 1 sent by the terminal node, wherein the message 1 includes a physical layer identifier randomly selected by the terminal node in a physical layer identifier domain used for contention access; scramble a response message in message 2 using the randomly selected physical layer identifier; receive message 3 sent by the terminal node, wherein the terminal node scrambles the data in message 3 using the physical layer identifier in message 1, and the message 3 also carries the terminal node's own identifier; scramble message 4 using the randomly selected physical layer identifier, and send message 4, wherein the response message in message 4 includes the selected physical layer identifier and the contention resolution identifier of the terminal node.

8. A unicast physical layer identification determination device, used for a terminal node, characterized in that: include: A response message receiving module, used to receive a response message from a management node during a random access process, wherein the management node selects a physical layer identifier from multiple physical layer identifiers outside the physical layer identifier domain used for contention access, and during the random access process, sends the selected physical layer identifier in a response message; A unicast physical layer identifier determination module, configured to determine a unicast physical layer identifier based on the response message; The unicast physical layer identifier determination module is also used to send message 1 to the management node, wherein the message 1 includes a physical layer identifier randomly selected in the physical layer identifier field used for competitive access; receive message 2 sent by the management node; send message 3 to the management node, wherein the data in the message 3 is scrambled using the physical layer identifier in the message 1; and descramble the received message 4 sent by the management node using the randomly selected physical layer identifier, wherein the response message in the message 4 includes the selected physical layer identifier.

9. A storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the unicast physical layer identifier indication method according to any one of claims 1 to 4 or the steps of the unicast physical layer identifier determination method according to any one of claims 5 to 6 are executed.

10. An in-vehicle device, comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, characterized in that: When the processor runs the computer program, the processor executes the steps of the unicast physical layer identifier indication method described in any one of claims 1 to 4, or the steps of the unicast physical layer identifier determination method described in any one of claims 5 to 6.

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