A method and apparatus for wireless communication

Abstract

Provided are a method and device for wireless communication, which can flexibly adjust a receiver and an exciter for radio frequency identification, thereby meeting application requirements of complex scenarios. The method comprises: a centralized node determining a first topology between a receiver and an exciter for radio frequency identification according to first information, wherein the first information comprises state information of the receiver and / or state information of the exciter; and the centralized node sending second information to the receiver, wherein the second information is used to indicate the first topology.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of communication, and more particularly, to a method and apparatus for wireless communication. BACKGROUND

[0002] Radio frequency identification (RFID) is a non-contact automatic identification technology, often referred to as an inductive electronic wafer or proximity card, induction card, non-contact card, electronic tag, electronic barcode, etc. RFID automatically identifies target objects and obtains related data through radio frequency signals, and the identification work does not require human intervention. As a wireless version of barcodes, RFID technology has advantages such as waterproof, anti-magnetic, high temperature resistance, long service life, large reading distance, encrypted data on the tag, larger data storage capacity, and easy information change, etc. Its application will bring revolutionary changes to the retail, logistics and other industries.

[0003] In order to further improve the accuracy and real-time performance of RFID tag positioning, the RFID reader can be separated into a receiver and an exciter, i.e., the receiving antenna and the transmitting antenna are separated, so as to reduce the self-interference of the original RFID reader and improve the receiving sensitivity of the receiver.

[0004] However, the current binding mode of the receiver and the exciter is not flexible and cannot meet the application requirements of complex scenarios. Therefore, there is an urgent need for a technology that can flexibly adjust the exciter and the receiver. SUMMARY

[0005] The present application provides a method and apparatus for wireless communication, which can improve the flexibility of determining the topology between the exciter and the receiver.

[0006] In a first aspect, the present application provides a method for wireless communication, which can be executed by a centralized node or a chip in the centralized node. The method comprises: determining, by the centralized node, a first topology between a receiver and an exciter according to first information, the receiver and the exciter being used for radio frequency identification, the first information comprising state information of the receiver and / or state information of the exciter; and sending, by the centralized node, second information to the receiver, the second information being used to indicate the first topology.

[0007] For example, the centralized node sends second information to the receiver, the second information being used to indicate the first topology, comprising: when the receiver is deployed on a second distributed node, the centralized node sends the second information to the second distributed node, and the second distributed node indicates the second information to the receiver through an internal interface, or when the receiver is deployed on the centralized node, the centralized node directly indicates the second information to the receiver through an internal interface.

[0008] For example, the centralized node determining the first topology between the receiver and the exciter according to the first information can have two meanings:

[0009] Meaning 1: The centralized node determines the first topology between the exciter and the pre-configured receiver according to the first information.

[0010] Meaning 2: The centralized node determines the first topology between the receiver and the exciter according to the first information, including: the centralized node determines the exciter, the receiver, and the network configuration or arrangement between the receiver and the exciter according to the first information.

[0011] That is, the centralized node determining the first topology between the receiver and the exciter according to the first information can be understood as the centralized node determining the first topology between the exciter and the pre-configured receiver according to the first information, or can be understood as the centralized node selecting the receiver and the exciter and determining the topology relationship between the receiver and the exciter according to the first information. That is, when the centralized node determines the first topology, it can obtain a better first topology by only determining the topology connection relationship between the receiver and the exciter, or it can obtain a better first topology by selecting appropriate receiver and exciter and determining the topology connection relationship between the receiver and the exciter when determining the first topology.

[0012] Optionally, the second information is used to indicate the first topology, including: the second information is used to indicate the binding information of the exciter and the receiver, or the second information includes the identifier of the exciter.

[0013] That is, the centralized node can send the binding information of the exciter and the receiver, or the mapping relationship between the identifier of the exciter and the identifier of the receiver to the receiver, or it can only send the identifier of the exciter to the receiver, and the receiver binds the indicated exciter by default.

[0014] Optionally, the second information includes the topology connection information between the exciter and the receiver.

[0015] According to the embodiment of the application, the centralized node determines the topology relationship between the receiver and the exciter, and controls the communication link between the receiver and the exciter according to the topology relationship. The centralized node can determine or adjust the topology between the receiver and the exciter according to the state information of the receiver and / or the state information of the exciter, and the receiver and the exciter communicate according to the topology, that is, the binding relationship between the receiver and the exciter is not statically configured, and the centralized node can flexibly adjust which receivers are bound with which exciters and how the receiver and the exciter communicate.

[0016] With reference to the first aspect, in some implementations of the first aspect, the method further includes: sending, by the centralized node, third information to the exciter, the third information being used to indicate the identification information of the receiver.

[0017] When the centralized node determines the exciter, the receiver, and the network configuration or arrangement between the receiver and the exciter according to the first information, the centralized node sends the identification information of the receiver to the exciter, or the centralized node sends the identification information and the location information of the receiver to the exciter. Thus, according to the implementation of the present application, the centralized node can flexibly select a suitable receiver to establish a topological relationship between the receiver and the exciter.

[0018] With reference to the first aspect, in some implementations of the first aspect, the method further includes: sending, by the centralized node, indication information to the receiver, the indication information being used to indicate that the receiver establishes a connection with the exciter, and the indication information including the identification information of the exciter.

[0019] With reference to the first aspect, in some implementations of the first aspect, the exciter is deployed on a first distributed node.

[0020] With reference to the first aspect, in some implementations of the first aspect, the receiver is deployed on the centralized node.

[0021] With reference to the first aspect, in some implementations of the first aspect, the receiver is deployed on a second distributed node.

[0022] With reference to the first aspect, in some implementations of the first aspect, the method is applied to an integrated access and backhaul (IAB) system, the centralized node is a donor node in the IAB system, the first distributed node is a first IAB node in the IAB system, and the second distributed node is a second IAB node in the IAB system.

[0023] According to the implementation of the present application, the exciter and the receiver are deployed on the nodes of the IAB system, and the centralized node, i.e., the donor node, can control the IAB nodes to flexibly adjust the topology between the exciter and the receiver.

[0024] In some implementations of the first aspect, the receiver is deployed on a second distributed node, and the method further comprises: receiving, by the centralized node, fourth information from the receiver, the fourth information being used to indicate that the centralized node selects a first access and mobility management function (AMF) network element; determining, by the centralized node, the first AMF network element according to the fourth information, the first AMF network element supporting the receiver authorization; sending, by the centralized node, fifth information to the first AMF network element, the fifth information being used to instruct the first AMF network element to perform the receiver authorization; and receiving, by the centralized node, sixth information from the first AMF network element, the sixth information including information of the receiver.

[0025] In some implementations of the first aspect, the exciter is deployed on a first distributed node, and the method further comprises: receiving, by the centralized node, seventh information from the exciter, the seventh information being used to indicate that the centralized node selects a second AMF network element; determining, by the centralized node, the second AMF network element according to the seventh information, the second AMF network element supporting the exciter authorization; sending, by the centralized node, eighth information to the second AMF network element, the eighth information being used to instruct the second AMF network element to perform the exciter authorization; and receiving, by the centralized node, ninth information from the AMF network element, the ninth information including information of the exciter.

[0026] According to the embodiments of the present application, the host node selects appropriate AMF network elements to authorize the exciter and the receiver according to the subscription information of the exciter and the receiver, and the IAB node obtains the permission to enable / use the exciter or the receiver capability, so that the IAB system can have the radio frequency identification capability.

[0027] In some implementations of the first aspect, the method further comprises: sending, by the centralized node, broadcast information, the broadcast information being used to instruct the first distributed node and / or the second distributed node to select a parent node.

[0028] According to the embodiments of the present application, the centralized node instructs the first distributed node and / or the second distributed node to select appropriate parent nodes by sending the broadcast information, so that the complexity of determining the first topology by the centralized node can be reduced.

[0029] In some implementations of the first aspect, the first information includes at least one of the following information: load information of the receiver, a maximum number of exciters supported by the receiver, or location information of the exciter.

[0030] With reference to the first aspect, in some implementations of the first aspect, the first information further includes information of a second topology, the first topology being obtained by adjusting the second topology between the receiver and the exciter.

[0031] For example, the information of the second topology is at least one of the following: a number of interval nodes between the receiver and the exciter, a link load between the receiver and the exciter, a link quality between the receiver and the exciter, or a redundant path between the receiver and the exciter.

[0032] In a second aspect, a method for wireless communication is provided, which can be performed by an exciter or a chip in the exciter. The method includes: receiving, by the exciter, third information from a centralized node, the third information being used to indicate identification information of a receiver, the receiver being determined by the centralized node according to first information, the receiver and the exciter being used for radio frequency identification, the first information including state information of the receiver and / or state information of the exciter.

[0033] With reference to the second aspect, in some implementations of the second aspect, the exciter is deployed on a first distributed node.

[0034] With reference to the second aspect, in some implementations of the second aspect, the receiver is deployed on the centralized node.

[0035] With reference to the second aspect, in some implementations of the second aspect, the receiver is deployed on a second distributed node.

[0036] With reference to the second aspect, in some implementations of the second aspect, the method is applied to an IAB system, the centralized node is a donor node in the IAB system, the first distributed node is a first IAB node in the IAB system, and the second distributed node is a second IAB node in the IAB system.

[0037] With reference to the second aspect, in some implementations of the second aspect, the method further includes: sending, by the exciter, seventh information to the centralized node, the seventh information being used to indicate that the centralized node selects a second AMF network element, the second AMF network element supporting authorization of the exciter.

[0038] With reference to the second aspect, in some implementations of the second aspect, the exciter receives broadcast information from the centralized node, the broadcast information being used to indicate that the exciter selects a parent node.

[0039] In some implementations of the second aspect, in combination with the second aspect, the first information includes at least one of the following: load information of the receiver, a maximum number of exciters supported by the receiver, or position information of the exciters.

[0040] In some implementations of the second aspect, in combination with the second aspect, the first information further includes information of a second topology, the first topology being obtained by adjusting the second topology between the receiver and the exciters.

[0041] For example, the information of the second topology includes at least one of the following: a number of interval nodes between the receiver and the exciters, link load between the receiver and the exciters, link quality between the receiver and the exciters, or redundant paths between the receiver and the exciters.

[0042] According to the embodiments of the present application, the centralized node determines the topological relationship between the receiver and the exciters, and the centralized node can determine or adjust the topology between the receiver and the exciters according to the state information of the receiver and / or the state information of the exciters, and the receiver and the exciters communicate according to the topology, that is, the binding relationship between the receiver and the exciters is not statically configured, and the centralized node can flexibly adjust which receivers are bound to which exciters and how the receiver and the exciter communicate.

[0043] In a third aspect, the present application provides a method of wireless communication, which can be performed by a receiver or a chip in the receiver. The method includes: receiving, by the receiver, second information from a centralized node, the second information being used to indicate a first topology, the first topology being determined by the centralized node according to first information, the receiver and the exciter being used for radio frequency identification, and the first information including state information of the receiver and / or state information of the exciter.

[0044] In some implementations of the third aspect, in combination with the third aspect, the exciter is deployed on a first distributed node.

[0045] In some implementations of the third aspect, in combination with the third aspect, the receiver is deployed on the centralized node.

[0046] In some implementations of the third aspect, in combination with the third aspect, the receiver is deployed on a second distributed node.

[0047] In some implementations of the third aspect, in combination with the third aspect, the method is applied to an IAB system, and the centralized node is a host node in the IAB system.

[0048] In some implementations of the third aspect, the method further includes that the method is applied to an IAB system, the centralized node is a donor node in the IAB system, the first distributed node is a first IAB node in the IAB system, and the second distributed node is a second IAB node in the IAB system.

[0049] In some implementations of the third aspect, the first information includes at least one of the following: load information of the receiver, a maximum number of exciters supported by the receiver, or position information of the exciters. In some implementations of the third aspect, the first information further includes information of a second topology, the first topology being obtained by adjusting the second topology between the receiver and the exciters.

[0050] For example, the information of the second topology includes at least one of the following: a number of interval nodes between the receiver and the exciters, a link load between the receiver and the exciters, a link quality between the receiver and the exciters, or a redundant path between the receiver and the exciters.

[0051] According to the embodiments of the present application, the centralized node determines the topological relationship between the receiver and the exciters, and the centralized node can determine or adjust the topology between the receiver and the exciters according to the state information of the receiver and / or the state information of the exciters. The receiver and the exciters communicate according to the topology, that is, the binding relationship between the receiver and the exciters is not statically configured, and the centralized node can flexibly adjust which receivers are bound to which exciters and how the receiver and the exciters communicate.

[0052] In a fourth aspect, the present application provides a device for wireless communication, the device having the function of implementing the method in the first aspect and any possible implementation manner thereof. The function can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

[0053] In a fifth aspect, the present application provides a device for wireless communication, the device having the function of implementing the method in the second aspect and any possible implementation manner thereof. The function can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

[0054] In a sixth aspect, the present application provides a device for wireless communication, the device having the function of implementing the method in the third aspect and any possible implementation manner thereof. The function can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

[0055] In a seventh aspect, the present application provides a network device, comprising a processor and a memory. The memory is configured to store a computer program, and the processor is configured to invoke and run the computer program stored in the memory, so that the network device executes the method in the first aspect or any possible implementation manner of the first aspect.

[0056] In an eighth aspect, the present application provides a network device, comprising a processor and a memory. The memory is configured to store a computer program, and the processor is configured to invoke and run the computer program stored in the memory, so that the network device executes the method in the second aspect or any possible implementation manner of the second aspect.

[0057] In a ninth aspect, the present application provides a network device, comprising a processor and a memory. The memory is configured to store a computer program, and the processor is configured to invoke and run the computer program stored in the memory, so that the network device executes the method in the third aspect or any possible implementation manner of the third aspect.

[0058] In a tenth aspect, the present application provides a chip, comprising a processor. The processor is configured to read and execute a computer program stored in a memory, so as to execute the method in the first aspect or any possible implementation manner of the first aspect.

[0059] Optionally, the chip further comprises a memory, and the memory is connected with the processor through a circuit or a wire. The memory is configured to store a computer program.

[0060] Further optionally, the chip further comprises a communication interface.

[0061] In an eleventh aspect, the present application provides a chip, comprising a processor. The processor is configured to read and execute a computer program stored in a memory, so as to execute the method in the second aspect or any possible implementation manner of the second aspect.

[0062] Optionally, the chip further comprises a memory, and the memory is connected with the processor through a circuit or a wire. The memory is configured to store a computer program.

[0063] Further optionally, the chip further comprises a communication interface.

[0064] In a twelfth aspect, the present application provides a chip comprising a processor. The processor is configured to read and execute a computer program stored in a memory to perform the method in the third aspect or any possible implementation manner of the third aspect.

[0065] Optionally, the chip further comprises a memory, the memory being connected with the processor through a circuit or a wire, and the memory being configured to store the computer program.

[0066] Further optionally, the chip further comprises a communication interface.

[0067] In a thirteenth aspect, the present application further provides a computer program product comprising computer program codes, which, when executed on a computer, cause the computer to perform the method in the first aspect or any possible implementation manner thereof.

[0068] In a fourteenth aspect, the present application further provides a computer program product comprising computer program codes, which, when executed on a computer, cause the computer to perform the method in the second aspect or any possible implementation manner thereof.

[0069] In a fifteenth aspect, the present application further provides a computer program product comprising computer program codes, which, when executed on a computer, cause the computer to perform the method in the third aspect or any possible implementation manner thereof.

[0070] In a sixteenth aspect, the present application further provides a computer storage medium, wherein the computer readable storage medium stores computer instructions, and the computer instructions, when executed on a computer, cause the computer to perform the method in the first aspect or any possible implementation manner thereof.

[0071] In a seventeenth aspect, the present application further provides a computer storage medium, wherein the computer readable storage medium stores computer instructions, and the computer instructions, when executed on a computer, cause the computer to perform the method in the second aspect or any possible implementation manner thereof.

[0072] In an eighteenth aspect, the present application further provides a computer storage medium, wherein the computer readable storage medium stores computer instructions, and the computer instructions, when executed on a computer, cause the computer to perform the method in the third aspect or any possible implementation manner thereof.

[0073] According to the embodiments of the present application, the centralized node can flexibly determine the energizer, the receiver, and the topology relationship between the energizer and the receiver, i.e., the selection of the energizer and the receiver and the topology can be determined according to the state information of the energizer, the state information of the receiver, or the topology information before adjustment, thereby improving the flexibility of the topology determination of the energizer and the receiver in the radio frequency identification. BRIEF DESCRIPTION OF DRAWINGS

[0074] Figure 1 An architecture diagram of an IAB system suitable for embodiments of the present application.

[0075] Figure 2 A schematic diagram of the components of an IAB node.

[0076] Figure 3 An example of an IAB system.

[0077] Figure 4 An example of a user plane protocol stack architecture of a multi-hop IAB network.

[0078] Figure 5 An example of a control plane protocol stack architecture of a multi-hop IAB network.

[0079] Figure 6 A schematic diagram of a split RFID.

[0080] Figure 7 A schematic diagram of topology adjustment of the receiver and the energizer.

[0081] Figure 8 An example of a schematic flow chart for determining the topology between the receiver and the energizer.

[0082] Figure 9 Another example of a schematic flow chart for determining the topology between the receiver and the energizer.

[0083] Figure 10 An example of a schematic flow chart for energizer authorization.

[0084] Figure 11 An example of a schematic flow chart for receiver authorization.

[0085] Figures 12 to 15 A structural schematic diagram of a possible device provided by the embodiments of the present application. DETAILED DESCRIPTION

[0086] The technical solutions in the present application will be described below with reference to the accompanying drawings.

[0087] The technical solutions of the embodiments of the present application can be applied to various communication systems, for example: a long term evolution (LTE) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD), a universal mobile telecommunication system (UMTS), a 5th generation (5G) system, a future 6th generation (6G) or new radio (NR), and the like.

[0088] The terminal device can be a device that provides voice / data connectivity to a user, for example, a handheld device with wireless connection function, a vehicle-mounted device, and the like. At present, some examples of the terminal are: a mobile phone, a tablet computer, a notebook computer, a palm computer, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a wireless terminal in self driving, a wireless terminal in remote surgery, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a 5G network, or a terminal device in a public land mobile network (PLMN), and the like. The embodiments of the present application are not limited thereto.

[0089] An access network device is a device in a RAN, or a RAN node that accesses a terminal device to a wireless network. For example, by way of example and not limitation, as an access network device, one can list: a gNB, a transmission reception point (TRP), an evolved Node B (eNB), a radio network controller (RNC), a Node B (NB), a base station controller (BSC), a base transceiver station (BTS), a home base station (e.g., home eNodeB, or home NB, HNB), a base band unit (BBU), or a wireless fidelity (Wifi) access point (AP), etc. In one network structure, an access network device can include a centralized unit (CU) node, or a distributed unit (DU) node, or a RAN device including a CU node and a DU node, or a RAN device including a control plane CU node (CU-CP node) and a user plane CU node (CU-UP node) and a DU node.

[0090] A wireless backhaul node (may also be referred to as an IAB node) is used to provide a wireless backhaul service. Wherein, the wireless backhaul service refers to a data and / or signaling service provided through a wireless backhaul link. The IAB node is a specific name of a relay node, which does not limit the scheme of the present application, and can be one of the above-mentioned base stations or terminal devices with forwarding function, or an independent device form. In a network containing an IAB node (hereinafter referred to as an IAB network), the IAB node can provide wireless access service for terminals and connect to a host base station (donor gNB) through a wireless backhaul link to transmit user's service data.

[0091] For example, the IAB node can also be a customer premises equipment (CPE), a residential gateway (RG), and the like. In this case, the method provided by the embodiments of the present application can also be applied to the scene of home access.

[0092] Referring to Figure 1 , Figure 1 is an architecture diagram of an IAB system suitable for the technical scheme of the present application. As Figure 1As shown, an IAB system comprises at least one base station 100, one or more terminal devices 101 served by the base station 100, one or more relay nodes (i.e., IAB nodes) 110, and one or more terminal devices 111 served by the IAB nodes 110. The IAB nodes 110 are connected to the base station 100 through wireless backhaul links 113. Generally, the base station 100 is referred to as a host base station. Alternatively, the host base station is also referred to as a host node or a donor node or an IAB donor in this application. In addition, the IAB system can also comprise one or more intermediate IAB nodes. For example, the IAB node 120 and the IAB node 130.

[0093] The host base station can be an access network element with full base station functions, or can be in a form of a centralized unit (CU) and a distributed unit (DU) separation, i.e., the host node is composed of a centralized unit of the host base station and a distributed unit of the host base station. Herein, the centralized unit of the host node is also referred to as an IAB donor CU (also referred to as a donor CU, or directly referred to as a CU). The distributed unit of the host node is also referred to as an IAB donor DU (or referred to as a donor DU). The donor CU can also be in a form of a control plane (CP) and a user plane (UP) (herein referred to as a CU-UP) separation. For example, the CU can be composed of a CU-CP and one or more CU-UPs.

[0094] The following explains some terms in the embodiments of the present application, so as to facilitate understanding by those skilled in the art.

[0095] (I) IAB system

[0096] 1. Basic concepts

[0097] Link: refers to a path between two adjacent nodes in a path.

[0098] Access link: a link between a terminal device and a base station, or between a terminal device and an IAB node, or between a terminal device and a host node, or between a terminal device and a host DU. Alternatively, the access link includes a wireless link used by a certain IAB node when it communicates with its parent node as a normal terminal device role. The IAB node as a normal terminal device role does not provide backhaul service for any child node. The access link includes an uplink access link and a downlink access link. In this application, the access link of the terminal device is a wireless link, so the access link can also be referred to as a wireless access link.

[0099] Backhaul link: the link between an IAB node and its parent node when the IAB node acts as a wireless backhaul node. An IAB node acts as a wireless backhaul node when it provides wireless backhaul service to its child nodes. A backhaul link includes an uplink backhaul link and a downlink backhaul link. In this application, the backhaul link between an IAB node and its parent node is a wireless link, so the backhaul link can also be referred to as a wireless backhaul link.

[0100] Parent node and child node: each IAB node regards its adjacent node that provides it with wireless access service and / or wireless backhaul service as a parent node. Accordingly, each IAB node can be regarded as a child node of its parent node.

[0101] Alternatively, the child node can also be referred to as a lower-level node, and the parent node can also be referred to as an upper-level node.

[0102] The last hop node of a node: refers to the node that receives the data packet last in the path containing the node before the node. It can be understood that the last hop node of the node can include the last hop node of the node in uplink transmission and the last hop node of the node in downlink transmission.

[0103] The next hop node of a node: refers to the node that receives the data packet first in the path containing the node after the node. It can be understood that the next hop node of the node can include the next hop node of the node in uplink transmission and the next hop node of the node in downlink transmission.

[0104] The entry link of a node: refers to the link between the node and the last hop node of the node, which can also be referred to as the last hop link of the node. It can be understood that the entry link of the node can include the entry link of the node in uplink transmission and the entry link of the node in downlink transmission.

[0105] The exit link of a node: refers to the link between the node and the next hop node of the node, which can also be referred to as the next hop link of the node. It can be understood that the exit link of the node can include the exit link of the node in uplink transmission and the exit link of the node in downlink transmission.

[0106] Access IAB node: refers to the IAB node accessed by the terminal, or the IAB node that provides access service for the terminal device.

[0107] Intermediate IAB node: refers to the IAB node that provides wireless backhaul service for other IAB nodes (e.g., access IAB nodes or other intermediate IAB nodes).

[0108] Routing: used to select the next hop node for a data packet.

[0109] 2. Composition of IAB node.

[0110] An IAB node can have a part of mobile terminal (MT) and a part of DU. The IAB node communicates with its parent node by using the MT part, and the IAB node communicates with its child node (the child node can be a terminal or another IAB node) by using the DU part. An IAB node can establish a backhaul connection between the MT part and at least one parent node of the IAB node. The DU part of an IAB node can provide access services for the MT part of a terminal or another IAB node. The following will be described in conjunction with Figure 2 for example.

[0111] Referring to Figure 2 , Figure 2 is a schematic diagram of the composition of an IAB node. A UE is connected to a donor node through IAB node 2 and IAB node 1. Among them, IAB node 1 and IAB node 2 each include a DU part and a MT part. The DU part of IAB node 2 provides access services for the UE. The DU part of IAB node 1 provides access services for the MT part of IAB node 2. The DU part of the donor node provides access services for the MT part of IAB node 1.

[0112] In order to facilitate understanding, it is also necessary to introduce the protocol stack of the IAB network. The protocol stack of the IAB network includes a user plane protocol stack and a control plane protocol stack.

[0113] 3, the protocol stack architecture of the access IAB node, the intermediate IAB node, the donor-DU, the donor-CU and the terminal device.

[0114] The protocol stack of the access IAB node is different in the user plane and the control plane. The IAB node 1 shown in Figure 4 and Figure 5 may be referred to.

[0115] Referring to Figure 3 , Figure 3 is an example of an IAB system. As shown in Figure 3 , the IAB system is mainly composed of a donor node and an IAB node, wherein the IAB nodes are cascaded in a directed acyclic graph manner, and when cascaded, each IAB node can perform non access stratum (NAS) authentication, and complete operation administration and maintenance (OAM) configuration through a protocol data unit (PDU) session, and the donor node can manage all the IAB nodes therein.

[0116] It should be noted that the host node and the IAB node are examples of the centralized node and the distributed node respectively, and the present application can be applied to a system composed of other centralized nodes and distributed nodes.

[0117] Referring to Figure 4 , Figure 4 is an example of a user plane protocol stack architecture of a multi-hop IAB network. As shown in Figure 4 , in the protocol architecture shown in Figure 4 , the meanings of each protocol layer are as follows: a backhaul adaptation protocol (BAP) layer, a packet data convergence protocol (PDCP) layer, a general packet radio service tunneling protocol user plane (GTP-U) layer, a user datagram protocol (UDP) layer, an internet protocol (IP) layer, a layer 2 (L2) layer, a layer 1 (L1) layer, a radio link control (RLC) layer, a medium access control (MAC) layer, a physical (PHY) layer, a radio resource control (RRC) layer, an F1 application protocol (F1AP) layer, and a stream control transmission protocol (SCTP) layer. The L2 layer is a link layer. For example, the L2 layer can be a data link layer in an open systems interconnection (OSI) reference model. The L1 layer can be a physical layer. For example, the L1 layer can be a physical layer in the OSI reference model.

[0118] Each protocol layer is configured with a corresponding protocol layer entity, such as a PDCP entity, an RLC entity, and a MAC entity, and the like. In uplink transmission, a data packet (such as an IP data packet) of a UE is sent to a PHY layer of an access and backhaul node (such as an IAB node 2 shown in Figure 5 ) in sequence after being processed at a PDCP layer, an RLC layer, a MAC layer, and a PHY layer.

[0119] When the IAB node acts as a role of a wireless terminal, the protocol stack of the communication link between it and its parent node is the same as that of the wireless access link between a UE and an access IAB node, and the protocol stack between it and its donor CU is the same as that between a UE and a donor CU.

[0120] In addition, Figure 4 The user plane protocol stack of the F1 interface between the donor CU and the access IAB node (e.g. Figure 4 IAB node 2 in FIG. 2) is also shown in FIG. 2. The F1 interface is one-to-one corresponding to the GTP-U tunnels established by the GTP-U protocol layer and the data radio bearers (DRBs) of the UE. In other words, each radio bearer of a UE has one GTP tunnel corresponding to it one-to-one.

[0121] Referring to Figure 5 , Figure 5 is an example of the control plane protocol stack architecture for a multi-hop IAB network. Figure 4 The introduction of each protocol layer in Figure 5 is also applicable in FIG. 3, but there are some differences. For example, Figure 5 The F1 interface between the access IAB node and the donor CU in FIG. 3 adopts the F1 control plane (F1-C) protocol stack.

[0122] It should be noted that Figure 4 and Figure 5 respectively show an example of the end-to-end user plane and control plane protocol stack architecture for transmitting data services of a UE in an IAB network. Alternatively, there can be other possibilities for the protocol stack architecture. For example, if a protocol layer for security protection is introduced for the F1 interface between IAB 2 and the donor CU, the protocol stack architecture will change.

[0123] In addition, if the donor node is a functionally complete entity, the IAB donor only needs to reserve the protocol stack of the donor DU and the donor CU for the external node interface, and the protocol layer on the internal interface between the donor DU and the donor CU is not necessary. Similarly, the protocol stack of the IAB node, for the outside, can not distinguish between the DU part and the MT part, but only show the protocol stack for the external node interface.

[0124] In addition, whether it is the protocol stack architecture of the control plane or the protocol stack architecture of the user plane, when the Donor-DU is the proxy node of the F1 interface between the Donor-CU and the IAB node, in the user plane protocol stack architecture of the Donor-DU facing the access IAB node, above the IP layer, a UDP layer and a GTP-U layer respectively equivalent to the UDP layer and the GTP-U layer in the protocol stack architecture of the DU part in the access IAB node can be included, and an IPsec layer equivalent to the DU part of the access IAB node can also be contained; in the control plane protocol stack architecture of the Donor-DU facing the access IAB node, above the IP layer, an SCTP layer and an F1AP layer respectively equivalent to the SCTP layer and the F1AP layer in the protocol stack architecture of the DU part in the access IAB node can be included, and an IPsec layer or a DTLS layer equivalent to the DU part of the access IAB node can also be contained.

[0125] 4. F1 interface, protocol layer of F1 interface

[0126] The F1 interface refers to a logical interface between the DU part of the IAB node and the host node (or donor-CU or donor-DU), and the F1 interface can also be referred to as an F1* interface, supporting the user plane and the control plane. The protocol layer of the F1 interface refers to the communication protocol layer on the F1 interface.

[0127] For example, the user plane protocol layer of the F1 interface can include one or more of an IP layer, a UDP layer, and a GTP-U layer. Optionally, the user plane protocol layer of the F1 interface further includes a PDCP layer and / or an IP security (IPsec) layer.

[0128] For example, the control plane protocol layer of the F1 interface can include one or more of an IP layer, an F1AP layer, and an SCTP layer. Optionally, the control plane protocol layer of the F1 interface further includes one or more of a PDCP layer, an IPsec layer, and a datagram transport layer security (DTLS) layer.

[0129] It should be noted that the IAB node can also support Uu, E1, NG, and X2 interfaces, which are not described herein for brevity.

[0130] (II) Wireless radio frequency

[0131] 1. Split wireless radio frequency

[0132] Reference Figure 6 , Figure 6An example of a split radio frequency identification (RFID) is provided. Compared with a traditional RFID architecture, the split RFID architecture can split a reader into a receiver and an exciter. A receive chain of the original reader is included in the receiver, and a transmit chain of the original reader is included in the exciter. See Figure 6 When the receiver sends a downlink command to an RFID tag, the downlink command needs to be sent to the exciter first, and the exciter forwards the RFID tag. When the RFID tag sends uplink data, the RFID tag can send the uplink data directly to the receiver.

[0133] When the split RFID architecture is used to implement RFID tag inventory, downlink signaling sent by the receiver needs to be forwarded to the RFID tag by the exciter. Therefore, in a large-scale deployment, multiple exciters can exist, that is, the receiver can bind multiple exciters, manage the exciters, and select an exciter to forward a downlink management command.

[0134] 2. Exciter

[0135] In this application, the exciter can also be referred to as an excitation node or a Helper node. The exciter is deployed in an IAB node in an IAB system and can be considered as an upper-layer functional module of the IAB node. The exciter can call a communication interface of a DU or an MT to perform communication.

[0136] 2. Receiver

[0137] In this application, the receiver can also be referred to as a receiving node or a Receiver node. The receiver can be deployed in an IAB node or a donor node in an IAB system. Similarly, the receiver can also be considered as an upper-layer functional module of the IAB node or the donor node. The receiver can call a communication interface of a DU or an MT to perform communication.

[0138] (III) Network element

[0139] Only some related network elements are described below.

[0140] 1. Access management network element

[0141] To be used for mobility management and access management, etc., can be used to implement the functions of the mobility management entity (MME) except for session management, such as lawful interception, access authorization / authentication, etc. In the 5G communication system, the access management network element can be an access and mobility management function (AMF) network element. In future communication systems, the access management network element can still be an AMF network element, or it can also have other names, which are not limited in this application. In this application, the AMF network element can be responsible for the related authorization of the IAB node, the booster and the receiver.

[0142] 2. Authentication server

[0143] Used for authentication service, generating key to realize two-way authentication of terminal equipment, supporting unified authentication framework. In the 5G communication system, the authentication server can be an authentication server function (AUSF) network element. In future communication systems, the authentication server function network element can still be an AUSF network element, or it can also have other names, which are not limited in this application.

[0144] 3. Data management network element

[0145] Used for processing terminal device identification, access authentication, registration and mobility management, etc. In the 5G communication system, the data management network element can be a unified data management (UDM) network element, or a unified data repository (UDR) network element. In this application, it can also be an RFID-H network element, which can be a new network element deployed in the core network specifically responsible for RFID-related functions, responsible for authentication, authorization, inventory or tag read-write proxy functions related to RFID, deployed together with existing core network elements, or as a functional module of the existing core network element responsible for RFID-related functions, which is not limited in this application.

[0146] Next, combined with Figures 7 to 11 The flow of the present application is described in detail.

[0147] The present application can be applied to any system composed of centralized nodes and distributed nodes, and the following takes the IAB system as an example, which does not limit the present application.

[0148] Figure 7 An example of deploying receivers and boosters under the IAB system. Referring to Figure 7(a), the receiver is deployed on the donor node, the exciter A is deployed on the IAB node 4, and the exciter B is deployed on the IAB node 5. The exciter A is connected to the receiver through the IAB node 1, and the exciter B is connected to the receiver through the IAB node 2, that is, both the exciter A and the exciter B need to pass through an additional 1-hop IAB node to be connected to the receiver, which undoubtedly increases the additional delay overhead. Figure 7 (b) is a new topology obtained by adjusting Figure 7 (a), see Figure 7 (b), the IAB node 4 and the IAB node 5 are both directly connected to the donor node, that is, the exciter A and the exciter B can both directly communicate with the receiver, Figure 7 The topology of (b) is obviously smaller than that of (a). Figure 7

[0149] In another possible implementation, see Figure 7 (c), at this time, the receiver is deployed on the IAB node 1, and the exciter A and the exciter B are still deployed on the IAB node 4 and the IAB node 5, and the exciter B is not directly connected to the receiver. Figure 7 (d) is a new topology obtained by adjusting Figure 8 (c), at this time, the IAB node 5 where the exciter B is located is directly connected to the IAB node 1, that is, a better routing topology is obtained.

[0150] Figure 7 The communication method 800 of the present application is shown in the case of the receiver being deployed on the donor node. In the method 800, the receiver is deployed on the IAB node (an example of the second distributed node), and the receiver is deployed on the donor node (an example of the centralized node).

[0151] In a possible implementation, S810, the donor node (an example of the centralized node) receives the information (an example of the ninth information) of the exciter from the AMF network element.

[0152] It should be noted that when the exciter is deployed on the IAB node, the information of the exciter can be the information of the IAB node where the exciter is deployed.

[0153] The AMF network element sends the information of the exciter to the donor node, which can be sent to the donor node when the AMF network element authorizes the exciter, or the IAB node information and the exciter information can be sent to the donor node together when the AMF network element authorizes the IAB node, that is, in the IAB scenario, when the IAB function authorization is passed, the AMF network element can send the IAB authorization indication to the donor node through the N2 message, and the AMF network element can also carry the exciter information in the N2 message to the donor node. ​

[0154] S820, the host node determines a topology #1 (an example of the first topology) between the receiver and the exciter according to information #1 (an example of the first information).

[0155] The information #1 can include state information of the receiver and / or state information of the exciter. The state information of the receiver can be at least one of the following information: load information of the receiver, and the number of maximum exciter supported by the receiver. The state information of the exciter can be position information of the exciter.

[0156] When the host node obtains the topology #1 by adjusting an original topology #2 (an example of the second topology), the information #1 can include information of the topology #2. For example, the information of the topology #2 can be the number of interval nodes between the receiver and the exciter, link load between the receiver and the exciter, link quality between the receiver and the exciter, or redundant path between the receiver and the exciter.

[0157] For example, the host node determines the topology #1 according to the average number of interval nodes between the receiver and the exciter, or the number of interval nodes between the receiver and part of the exciter.

[0158] For another example, the host node determines the topology #1 according to the average link load between the receiver and the exciter, or the maximum link load, or the load between part of the links.

[0159] For another example, the host node determines the topology #1 according to the link quality of each link, or the worst link quality among all the links, wherein the link quality can be the average link quality, or the historical worst instantaneous link quality, or can be measured by packet loss rate, delay, jitter, etc.

[0160] The above description of the information #1 is only for example, in the present application, the host node can take all factors affecting the topology as the information #1, which is not limited in the present application.

[0161] It should be noted that the host node determines the topology #1 between the receiver and the exciter according to the information #1, which can be understood as that the host node determines the topology #1 between the exciter and the receiver pre-configured according to the information #1, or can be understood as that the host node selects the receiver and the exciter and determines the topology relationship between the receiver and the exciter according to the information #1. That is, when the host node determines the topology #1, it can only obtain a better topology #1 by determining the topology connection relationship between the receiver and the exciter, or it can select a suitable receiver and exciter and determine the topology connection relationship between the receiver and the exciter to obtain a better topology #1 when determining the topology #1.

[0162] When the host node determines the topology #1, the host node can also bind the receiver and the stimulator. The host node can bind the receiver and the stimulator by constructing a mapping relationship between the receiver identifier and the stimulator identifier. It should be noted that when the receiver is deployed on the host node, the host node identifier can be used instead of the receiver identifier. When the stimulator is deployed on the IAB node, the IAB node identifier can be used instead of the stimulator identifier, where the IAB node identifier can be a mobile termination (MT) identifier (such as a cell radio network temporary identity (C-RNTI), a 5G-serving-temporary mobile subscriber identity (5G-S-TMSI)) or a DU identifier (such as a radio network layer / transport network layer identifier (RNL / TNL ID)).

[0163] It should be noted that when the receiver is deployed on the host node, the communication between the host node and the receiver can be performed through an internal interface. For example, after the host node binds the receiver and the stimulator, the host node can send the binding information and the stimulator information to the receiver through the internal interface, for example, through F1-C / F1-U / RRC messages.

[0164] S830, the host node sends information #2 (an example of the second information) to the receiver, where the information #2 is used to indicate the topology #1.

[0165] Optionally, the information #2 includes the binding information of the stimulator and the receiver, or includes the identifier of the stimulator. For example, the binding information can be identified in various ways, such as by including the identifier of the receiver and the identifier of the stimulator in a signal element, or a message, or a data structure, to indicate that the receiver and the stimulator are bound in the signal element, or the message, or the data structure. That is, the host node can send the mapping relationship between the stimulator identifier and the receiver identifier to the receiver, or only send the identifier of the stimulator to the receiver, and the receiver binds the indicated stimulator by default.

[0166] Optionally, the information #2 comprises topology connection information between the exciter and the receiver. For example, the topology connection information can comprise identification information of the exciter, path information to the exciter. The path information is a path that the receiver needs to pass through when sending data to the exciter. For example, the path information can be represented by identification information of the path, or identification information of nodes on the path.

[0167] The topology connection information can comprise the binding information and identification information of the exciter. That is, the topology connection information can also be used to represent the mapping relationship between the exciter and the receiver. Optionally, from the topology connection information between the receiver #1 and the exciter #1, it can be known that the receiver #1 is bound to the exciter #1. Optionally, when the receiver #1 is directly connected to the exciter #1, the binding information of the receiver #1 and the exciter #1 comprised in the information #2, or the identification information of the exciter #1 can be understood as the topology connection information of the exciter #1 and the receiver #1.

[0168] When the information #2 comprises the binding information or the identification information of the exciter in addition to the topology connection information, it can be understood that the mapping relationship between the receiver and the exciter is determined according to the binding information or the identification information of the exciter, and not according to the topology connection information.

[0169] The topology connection information can be topology connection information between IAB nodes. The topology connection information can be used to indicate the topology #1 and other topology relationships between IAB nodes. The information #2 can also optionally comprise an association relationship between the IAB node and the receiver or the exciter deployed on the IAB node. That is, the topology connection information can be represented by the IAB node where the exciter is located. The IAB node can be represented in various ways, for example, by the identification information of the IAB node introduced above, for example, by an IP address or a MAC address.

[0170] The specific content of the topology connection information can be used to determine the location of the exciter. That is, the topology connection information can be understood as the location information of the exciter.

[0171] Optionally, the information #2 can be carried in a message and sent to the receiver, or the information in the information #2 can be carried by different messages and sent to the receiver respectively.

[0172] Optionally, when the receiver can determine the location information of the exciter according to the identification information of the exciter, the receiver does not need to additionally obtain the location information of the exciter.

[0173] Optionally, the receiver can actively establish a connection with the exciter according to the information #2.

[0174] Optionally, the receiver can adjust the topology information on the receiver according to the information #2.

[0175] It should be noted that the topology #1 can be in the form of the receiver directly connected with the exciter, or in the form of the exciter connected with the receiver through an intermediate node, i.e., the binding of the exciter and the receiver can be understood as the mapping relationship between the receiver and the exciter responsible for management, rather than the direct connection between the receiver and the exciter.

[0176] It should be noted that when the receiver is deployed on the host node, the receiver can be indicated by the information #2 through the internal interface of the receiver, i.e., the present application includes the case that the receiver is integrated into the internal functional module of the host node, and the host node indicates the information #2 to the receiver through the internal interface.

[0177] In a possible implementation, S840, the host node sends the identification information of the receiver (an example of the third information) to the exciter.

[0178] The identification information of the receiver is information that can enable the exciter to identify or recognize the receiver.

[0179] Optionally, when the relevant information of the receiver is not pre-configured on the exciter, i.e., the exciter is unknown to the relevant information of the receiver, the host node sends the identification information of the receiver to the exciter after determining the receiver and the topology #1. Optionally, the host node also sends the location information of the receiver to the exciter.

[0180] The identification information of the receiver can be used to indicate that the exciter is bound with the receiver. The location information can enable the exciter to subsequently communicate with the correct receiver. The location information can be represented in various ways, such as by the IAB node where the receiver is located, such as by the path information to the receiver or the information of the next hop node. The IAB node can be represented in various ways, such as by the identification information of the IAB node introduced above, such as by the IP address or the MAC address.

[0181] It should be noted that when the exciter can determine the location information of the receiver according to the identification information of the receiver, the exciter does not need to additionally obtain the location information of the receiver.

[0182] Optionally, the exciter can actively establish a connection with the receiver according to the identification information or the location information of the receiver.

[0183] Therefore, according to the implementation of the present application, the host node can also flexibly select a suitable receiver to establish the topology relationship between the receiver and the exciter.

[0184] It should be noted that the host node can build RLC links between IAB nodes from top to bottom and configure BAP layer link routing information, for example, based on a routing table, to ensure that uplink and downlink data of the IAB node can be forwarded correctly. Subsequently, the IAB-Node-DU can connect with the host-sink CU via F1. Communication between the receiver and exciter can then be achieved through F1-C / F1-U / RRC protocols, SCTP / Tunneling User Plane (GTPU), or directly based on IP / Transmission Control Protocol (TCP) / UDP.

[0185] The specific process of building links and configuring routes can be similar to existing technologies; here, to avoid redundancy, its detailed description is omitted.

[0186] The following combination Figure 7 (a) and (b) are illustrated by example. The host node can determine to bind the receiver to exciters A and B and form a connection based on the receiver's load information, the maximum number of exciters supported by the receiver, or the location information of exciters A and B. Figure 7 The topological form of (b), or, when the receiver, exciter A and exciter B are already in Figure 7 The host node can also adjust the topology to the form of (a) based on the relevant information of the topology. Figure 7 The topological form of (b). When the host node is determined Figure 9 In the topology of (b), the host node sends the binding information between the receiver and receiver A and receiver B to the receiver through its internal interface. When exciters A and B do not preset the relevant information of the receiver, the host node sends the receiver's identification information to exciters A and B. Thus, the receiver can subsequently communicate with exciters A and B according to this topology. The above is for illustrative purposes only and does not constitute any limitation on this application.

[0187] According to the embodiments of this application, the exciter is deployed on the IAB node and the receiver is deployed on the host node. The host node can centrally manage the receiver and the receiver, and can determine or adjust the topology between the receiver and the exciter based on the status information of the receiver and / or the status information of the exciter. The receiver and the exciter communicate according to the topology. That is, the binding relationship between the receiver and the exciter is not statically configured. The host node can flexibly adjust which receivers are bound to which exciters and how the receiver and the exciter communicate.

[0188] Figure 10 The method 900 of the present application is shown in the case that the receiver is deployed on the IAB node. In the method 900, the exciter is deployed on the IAB node #1 (an example of the first distributed node), and the receiver is deployed on the IAB node #2 (an example of the second distributed node).

[0189] In a possible implementation, S910, the host node receives the exciter information (an example of the ninth information) from the AMF network element.

[0190] The process of the AMF network element sending the exciter information to the host node is consistent with the description of S810 in the method 800, and will not be repeated here.

[0191] In a possible implementation, S920, the host node receives the receiver information (an example of the sixth information) from the AMF network element.

[0192] It should be noted that when the receiver is deployed on the IAB node #2, the information of the receiver can be the information of the IAB node #2 where the receiver is deployed.

[0193] The AMF network element sends the information of the receiver to the host node, which can be sent to the host node when the AMF network element performs the receiver authorization, or the information of the IAB node #2 and the exciter information can be sent to the host node together when the AMF network element performs the IAB node #2 authorization, that is, in the IAB scenario, when the IAB function authorization is passed, the AMF network element sends the IAB authorization indication to the host node through the N2 message, and the AMF network element can also carry the receiver information in the N2 message to the host node.

[0194] S930, the host node determines the topology #A (another example of the first topology) between the exciter and the receiver according to the information #A (another example of the first information).

[0195] The process of the host node determining the topology #A between the exciter and the receiver according to the information #A is similar to the process of the host node determining the topology #1 between the exciter and the receiver according to the information #1 in the method 800, and will not be repeated here.

[0196] It should be noted that in the method 900, the exciter and the receiver are both deployed on the IAB node, and when the host node needs to construct the mapping relationship between the receiver and the exciter, the form can be to construct the mapping relationship between the receiver identifier and the exciter identifier, or the identifier of the IAB node #1 can be used instead of the identifier of the exciter, and the identifier of the IAB node #2 can be used instead of the identifier of the receiver, wherein the identifier of the IAB node can be the MT identifier (such as C-RNTI, 5G-S-TMSI) or the DU identifier (such as RNL / TNL ID).

[0197] S940, the host node sends information #B (another example in the second information) to the receiver, which is used to indicate topology #A.

[0198] The information #B used to indicate topology #A is similar to the description of information #2 used to indicate topology #1 in method 800, and is not described here.

[0199] In a possible implementation, S950, the host node sends the identification information of the receiver (another example in the third information) to the exciter.

[0200] Optionally, when the relevant information of the receiver is not pre-configured on the exciter, the host node can send the identification information of the receiver, or the identification information and the location information of the receiver, to the exciter. The description of the identification information and the location information is similar to the above description and is not described here.

[0201] Optionally, after receiving the identification information of the receiver, the host node can also send the information of the exciter to the receiver, and then the receiver can actively establish a connection with the exciter.

[0202] When the exciter and the receiver are both deployed on the IAB node, the information #B sent to the receiver and the identification information of the receiver sent to the exciter can be sent through F1-C, F1-U or RRC message.

[0203] It should be noted that in the IAB system, the IAB node will default to send information to the host node, and therefore the host node can update the BAP routing of the exciter, the receiver and the intermediate related nodes to ensure that the receiver and the exciter can normally communicate. The subsequent communication between the exciter and the receiver can be based on IP address through BAP layer addressing.

[0204] According to the embodiments of the present application, the exciter and the receiver are deployed on the IAB node, and the host node can centrally manage the exciter and the receiver, and can determine or adjust the topology between the receiver and the exciter according to the state information of the receiver and / or the state information of the exciter. The receiver and the exciter communicate according to the topology, that is, the binding relationship between the receiver and the exciter is not statically configured, and the host node can flexibly adjust which receivers are bound with which exciters and how the receiver and the exciter communicate.

[0205] Both method 800 and method 900 deploy the exciter and the receiver in the nodes of the IAB system, wherein the IAB node needs to request the AMF network element for authorization, and therefore the IAB node deploying the exciter can also request the AMF network element for exciter authorization. As an example but not limitation,Figure 10 An example of a method 1000 of the energizer authorization procedure is given.

[0206] As shown in Mode 1 The method 1000 can include S1010-S1060, wherein S1010 is an optional operation. After the operations S1010-S1060 are performed by the embodiments of the present application, the operations of the method 800 and the method 900 can be performed.

[0207] The method 1000 can be applied to the scheme in which the energizer is deployed in the IAB node.

[0208] Optionally, S1010, the host node sends broadcast information, and the broadcast information is used to indicate the parent node selected by the energizer.

[0209] The energizer receives the broadcast information, and when the IAB node in which the energizer is deployed is cascaded, the information broadcast by the host node can be referred to, and when the parent node (DU selection) is selected by the IAB node in which the energizer is deployed, the parent node indicated by the broadcast information can be preferentially selected.

[0210] For example, when the receiver is deployed on the host node, the information that the host node has the receiver capability is included in the broadcast information, and after the information is received by the energizer, the host node having the receiver capability is selected as the parent node, at this time, the binding topology of the local receiver and the energizer can be optimized, and the complexity of the operation of determining the topology relationship in the method 800 and the method 900 can be reduced.

[0211] S1020, the energizer sends information#a (an example of the seventh information) to the host node, and the information#a includes the authorization capability information of the energizer, and the information#a is used to indicate that the host node selects the AMF network element#a (an example of the second AMF network element).

[0212] In a possible implementation, the IAB node in which the energizer is deployed carries the information#a in the RRC establishment completion message, and the information#a can also include the authorization capability information of the IAB node, and the authorization capability information of the IAB node is used for the host node to select the AMF network element supporting the IAB authorization, and the authorization capability information of the energizer is used for the host node to select the AMF network element supporting the energizer authorization. That is, when the host node receives the information#a from the energizer, the AMF network element supporting both the IAB authorization and the energizer authorization can be selected.

[0213] It should be noted that the host node can perform IAB configuration on the IAB node deploying the stimulator, and the operation process of the configuration can be similar to the prior art, and the difference lies in that the identifier of the stimulator can be carried in the RRC message (such as RRC setup request or ULRRC transfer), and the identifier of the stimulator can also be replaced by the existing RAN ID, and the specific process is not described here.

[0214] S1030, the host node selects an AMF network element#a according to information#a, and the AMF network element#a supports stimulator authorization and can be used for subsequent execution of IAB authorization and stimulator authorization processes.

[0215] S1040, the host node sends information#b (an example of the eighth information) to the AMF network element#a for indicating the AMF network element#a to perform authorization.

[0216] In a possible implementation, the information#b includes authorization capability information of the IAB node and authorization capability information of the stimulator, for example, the host node can carry the authorization capability information of the IAB node and the authorization capability information of the stimulator in the N2 message to the AMF network element#b, for the AMF network element to perform the corresponding authorization process.

[0217] It should be noted that the information#a and the information#b can be the same or different, for example, the information#b can be generated based on the information#a.

[0218] S1050, the AMF network element#a determines whether to authorize the IAB node according to the information#b and the IAB subscription information.

[0219] When the AMF network element#a receives the information#b, it determines whether to authorize the IAB function according to the IAB node subscription information obtained from the UDM network element or the UDR network element and / or the local policy. This operation can be similar to the prior art and is not described here.

[0220] S1060, the AMF network element#a determines whether to authorize the stimulator according to the information#b. The way in which the AMF network element#a determines whether to authorize includes but is not limited to the following ways:

[0221] Mode 2

[0222] When the AMF network element#a receives the information#b, it determines whether to authorize the stimulator function according to the stimulator subscription information obtained from the UDM network element or the UDR network element.

[0223] Figure 11

[0224] When AMF network element #a receives information #b, it can retrieve the relevant stored information from the dedicated network element RFID-H and determine whether to authorize the exciter function. It should be noted that RFID-H here refers to a newly deployed functional network element in the core network, specifically responsible for RFID-related functions, such as authentication, authorization, inventory / tag read / write agent functions, etc.

[0225] S1070, AMF network element #a sends exciter information to the host node (an example of the ninth message).

[0226] Therefore, in the embodiments of this application, the authorization of the exciter can be performed synchronously during the authorization process of the IAB node, thereby enabling the IAB node to obtain the permission to enable / use the exciter capability.

[0227] In method 900, the receiver is deployed on an IAB node. Since the IAB node needs to request authorization from the AMF network element, the IAB node deploying the receiver can also request receiver authorization from the AMF network element. This is an example, not a limitation. Figure 11 An illustrative flow example of the receiver authorization process 1100 is given.

[0228] like Mode a As shown, method 1100 may include steps S1110 to S1160, where S1110 is an optional operation. After the execution of this embodiment, the operation of method 900 can be performed.

[0229] It should be noted that the receiver authorization process of method 1100 is similar to the exciter authorization process of method 1000. Therefore, for the sake of brevity, only the receiver authorization process will be briefly described below.

[0230] Optionally, in S1110, the host node sends a broadcast message to the receiver, which instructs the receiver to select a parent node.

[0231] S1120, the receiver sends information #α (an example of the fourth information) to the host node. Information #α includes the receiver's authorization capability information and is used to instruct the host node to select AMF network element #α (an example of the first AMF network element).

[0232] S1130, the host node selects AMF network element #α based on information #α. This AMF network element #α supports receiver authorization and can be used for subsequent execution of IAB authorization and receiver authorization processes.

[0233] S1140, the host node sends information #β (an example of the fifth information) to AMF network element #α to instruct AMF network element #α to authorize.

[0234] S1150, the AMF network element #a determines whether to authorize the IAB node according to the information #b and the IAB subscription information.

[0235] S1160, the AMF network element #a determines whether to authorize the receiver according to the information #b.

[0236] S1170, the AMF network element #a sends information of the receiver to the host node (an example of the sixth information). The way in which the AMF network element #b determines whether to authorize includes but is not limited to the following ways:

[0237] Mode b

[0238] When the AMF network element #a receives the information #b, it determines whether to allow the authorization of the receiver function according to the receiver subscription information obtained from the UDM network element or the UDR network element.

[0239] Figure 12

[0240] When the AMF network element #a receives the information #b, it can obtain the relevant storage information from the dedicated network element RFID-H and determine whether to authorize the exciter function.

[0241] Therefore, in the embodiments of the present application, the authorization of the receiver can be performed synchronously in the authorization process of the IAB node, so that the IAB node can obtain the permission to enable / use the receiver capability.

[0242] The above describes in detail the method of wireless communication provided by the embodiments of the present application. The following introduces the device of wireless communication provided by the embodiments of the present application.

[0243] Referring to Figure 12 , Figure 12 Fig. 5 is a schematic structural diagram of the device 500 of wireless communication provided by the present application. As shown in Figure 13 , the device 500 includes a transceiver unit 510 and a processing unit 520.

[0244] The processing unit 520 is configured to determine a first topology between a receiver and an exciter according to first information, the receiver and the exciter being used for radio frequency identification, and the first information including state information of the receiver and / or state information of the exciter.

[0245] The transceiver unit 510 is configured to send second information to the receiver, the second information being used to indicate the first topology.

[0246] Optionally, the transceiver unit 510 is further configured to send third information to the exciter, the third information being used to indicate identification information of the receiver.

[0247] Optionally, the transceiver 510 is further configured to receive fourth information from the receiver, the fourth information comprising authorization information of the receiver, the fourth information being used to instruct the centralized node to select a first access and mobility management function (AMF) network element; the processing unit 520 is further configured to determine the first AMF network element according to the fourth information, the first AMF network element supporting the authorization of the receiver; the transceiver 510 is further configured to send fifth information to the first AMF network element, the fifth information being used to instruct the first AMF network element to perform the authorization of the receiver; and the transceiver 510 is further configured to receive sixth information from the first AMF network element, the sixth information comprising information of the receiver.

[0248] Optionally, the transceiver 510 is further configured to receive seventh information from the exciter, the seventh information comprising authorization information of the exciter, the seventh information being used to instruct the centralized node to select a second AMF network element; the processing unit 520 is further configured to determine the second AMF network element according to the seventh information, the second AMF network element supporting the authorization of the exciter; the transceiver 510 is further configured to send eighth information to the second AMF network element, the eighth information being used to instruct the second AMF network element to perform the authorization of the exciter; and the transceiver 510 is further configured to receive ninth information from the AMF network element, the ninth information comprising information of the exciter.

[0249] Optionally, the transceiver 510 is further configured to send broadcast information, the broadcast information being used to instruct the first distributed node and / or the second distributed node to select a parent node.

[0250] In an implementation manner, the apparatus 500 can be a chip or an integrated circuit.

[0251] In this case, the transceiver 510 can be a communication interface, for example, an input and output interface, an input interface circuit, and an output interface circuit, etc. The processing unit 520 can be a processor.

[0252] In another implementation manner, the apparatus 500 can correspond to the centralized node in the method embodiments of the present application completely. The units included in the apparatus 500 are respectively configured to implement the corresponding operations and / or processes performed by the centralized node in the method embodiments.

[0253] In this case, the transceiver 510 can be a transceiver, which includes a transmitter and a receiver and has the functions of receiving and sending. The processing unit 520 can be a processor.

[0254] Referring to Figure 13 , Figure 13 A schematic structural diagram of an apparatus 600 for wireless communication is provided in the present application. As shown in Figure 14As shown, the apparatus 600 includes a transceiver unit 610 and a processing unit 620.

[0255] The transceiver unit 610 is configured to receive third information from the centralized node, the third information being used to indicate identification information of a receiver, the receiver being determined by the centralized node according to the first information, the receiver and the energizer being used for radio frequency identification, the first information including state information of the receiver and / or state information of the energizer.

[0256] Optionally, the transceiver unit 610 is further configured to send seventh information to the centralized node, the seventh information including authorization information of the energizer, the seventh information being used to instruct the centralized node to select a second AMF network element, the second AMF network element supporting the energizer authorization.

[0257] Optionally, the transceiver unit 610 is further configured to receive broadcast information from the centralized node, the broadcast information being used to instruct the energizer to select a parent node.

[0258] In an implementation manner, the apparatus 600 can be a chip or an integrated circuit.

[0259] In this case, the transceiver unit 610 can be a communication interface, for example, an input / output interface, an input interface circuit, and an output interface circuit, etc. The processing unit 620 can be a processor.

[0260] In another implementation manner, the apparatus 600 can correspond to the first distributed node in the method embodiments of the present application completely. The apparatus 600 includes units respectively configured to implement corresponding operations and / or processes performed by the first distributed node in the method embodiments.

[0261] In this case, the transceiver unit 610 can be a transceiver including a transmitter and a receiver. The processing unit 620 can be a processor.

[0262] Referring to Figure 14 , Figure 14 a schematic structural diagram of an apparatus 700 for wireless communication is provided. As shown in Figure 15 , the apparatus 700 includes a transceiver unit 710 and a processing unit 720.

[0263] The transceiver unit 710 is configured to receive second information from the centralized node, the second information being used to indicate a first topology, the first topology being determined by the centralized node according to first information, the receiver and the energizer being used for radio frequency identification, the first information including state information of the receiver and / or state information of the energizer.

[0264] The transceiver unit 720 is further configured to send fourth information to the centralized node, the fourth information comprising authorization information of the receiver, and the fourth information being used to instruct the centralized node to select a first AMF network element, and the first AMF network element supporting the authorization of the receiver.

[0265] The transceiver unit 720 is further configured to receive broadcast information from the centralized node, and the broadcast information being used to instruct the receiver to select a parent node.

[0266] In an implementation manner, the apparatus 700 can be a chip or an integrated circuit.

[0267] In this case, the processing unit 710 can be a processor. The transceiver unit 720 can be a communication interface, for example, an input / output interface, an input interface circuit, and an output interface circuit, etc.

[0268] In another implementation manner, the apparatus 700 can correspond to the second distributed node in the method embodiments of the present application completely. The apparatus 700 comprises various units respectively used to implement the corresponding operations and / or processes performed by the second distributed node in the various method embodiments.

[0269] In this case, the processing unit 710 can be a processor. The transceiver unit 720 can be a transceiver comprising a transmitter and a receiver.

[0270] The chip in the above apparatus embodiments can be a field-programmable gate array (FPGA), an application specific integrated circuit (ASIC), a system on chip (SoC), a central processor unit (CPU), a network processor (NP), a digital signal processing circuit (DSP), and can also be a micro controller unit (MCU, programmable logic device (PLD), or other integrated chip.

[0271] In addition, the present application further provides a network device 1000, which will be described below in combination with Figure 15 .

[0272] Referring to Figure 15 , Figure 15 is a structural schematic diagram of the network device 1000 provided by the present application. As shown in Figure 13As shown, the network device 1000 includes an antenna 1101, a radio frequency device 1102, and a baseband device 1103. The antenna 1101 is connected with the radio frequency device 1102. In the uplink direction, the radio frequency device 1102 receives the signal transmitted by the previous hop network node through the antenna 1101, and sends the received signal to the baseband device 1103 for processing. In the downlink direction, the baseband device 1103 processes the signal to be sent to the next hop network node, and sends the signal to the radio frequency device 1102, and the radio frequency device 1102 transmits the signal through the antenna 1101.

[0273] The baseband device 1103 can include one or more processing units 11031. In addition, the baseband device 1103 can also include a storage unit 11032 and a communication interface 11033. The storage unit 11032 is used to store computer programs and data. The communication interface 11033 is used to interact with the radio frequency device 1102. The communication interface 11033 can be an input / output interface or an input / output circuit.

[0274] Optionally, when the device 500 and the centralized node correspond completely, the structure of the device 500 can be as shown in the network device 1000. Figure 13 For example, the transceiver unit 510 can be implemented by the radio frequency device 1102, and the processing unit 520 can be implemented by the baseband device 1103.

[0275] For example, the baseband device 1103 is configured to determine a first topology between a receiver and an exciter according to first information, the receiver and the exciter being used for radio frequency identification, the first information including state information of the receiver and / or state information of the exciter. The radio frequency device 1102 is configured to send second information to the receiver through the antenna 1101, the second information being used to indicate the first topology.

[0276] Optionally, when the device 600 and the first distributed node correspond completely, the structure of the device 600 can also be as shown in the network device 1000. Figure 13 For example, the transceiver unit 610 can be implemented by the radio frequency device 1102, and the processing unit 620 can be implemented by the baseband device 1103.

[0277] For example, the radio frequency device 1102 is configured to receive second information from the host CU through the antenna 1101, and send the second information to the baseband device 1103 through the communication interface 11033.

[0278] Optionally, when the device 700 and the second distributed node correspond completely, the structure of the device 700 can also be as shown in the network device 1000. ​ For example, the transceiver unit 610 can be implemented by the radio frequency device 1102, and the processing unit 620 can be implemented by the baseband device 1103.

[0279] For example, the radio frequency device 1102 is configured to receive the third information from the host CU through the antenna 1101, and transmit the third information to the baseband device 1103 through the communication interface 11033.

[0280] In addition, the present application also provides a communication system, comprising one or more of the centralized node, the first distributed node and the second distributed node as described in the method embodiments.

[0281] The present application provides a computer readable storage medium, wherein the computer readable storage medium stores computer instructions, and when the computer instructions run on a computer, the computer executes corresponding operations and / or processes performed by the centralized node in any method embodiment.

[0282] The present application provides a computer readable storage medium, wherein the computer readable storage medium stores computer instructions, and when the computer instructions run on a computer, the computer executes corresponding operations and / or processes performed by the first distributed node in any method embodiment.

[0283] The present application provides a computer readable storage medium, wherein the computer readable storage medium stores computer instructions, and when the computer instructions run on a computer, the computer executes corresponding operations and / or processes performed by the second distributed node in any method embodiment.

[0284] The present application also provides a computer program product, which comprises computer program code, and when the computer program code runs on a computer, the computer executes corresponding operations and / or processes performed by the centralized node in any method embodiment of the present application.

[0285] The present application also provides a computer program product, which comprises computer program code, and when the computer program code runs on a computer, the computer executes corresponding operations and / or processes performed by the first distributed node in any method embodiment of the present application.

[0286] The present application also provides a computer program product, which comprises computer program code, and when the computer program code runs on a computer, the computer executes corresponding operations and / or processes performed by the second distributed node in any method embodiment of the present application.

[0287] The present application also provides a chip comprising a processor. The processor is configured to invoke and run a computer program stored in a memory, so as to execute corresponding operations and / or processes performed by the centralized node in any method embodiment of the present application.

[0288] Optionally, the chip further comprises a memory, and the memory is connected with the processor. The processor is configured to read and execute a computer program in the memory.

[0289] Further optionally, the chip further comprises a communication interface, and the processor is connected with the communication interface. The communication interface is configured to receive a signal and / or data to be processed, and the processor acquires the signal and / or data to be processed from the communication interface and processes the signal and / or data.

[0290] The application further provides a chip comprising a processor. The processor is configured to invoke and run a computer program stored in a memory to perform corresponding operations and / or processes performed by the first distributed node in any method embodiment of the application.

[0291] Optionally, the chip further comprises a memory, and the memory is connected with the processor. The processor is configured to read and execute a computer program in the memory.

[0292] Further optionally, the chip further comprises a communication interface, and the processor is connected with the communication interface. The communication interface is configured to receive a signal and / or data to be processed, and the processor acquires the signal and / or data to be processed from the communication interface and processes the signal and / or data.

[0293] The application further provides a chip comprising a processor. The processor is configured to invoke and run a computer program stored in a memory to perform corresponding operations and / or processes performed by the second distributed node in any method embodiment of the application.

[0294] Optionally, the chip further comprises a memory, and the memory is connected with the processor. The processor is configured to read and execute a computer program in the memory.

[0295] Further optionally, the chip further comprises a communication interface, and the processor is connected with the communication interface. The communication interface is configured to receive a signal and / or data to be processed, and the processor acquires the signal and / or data to be processed from the communication interface and processes the signal and / or data.

[0296] Optionally, the communication interface can be an input and output interface, and specifically can comprise an input interface and an output interface. Alternatively, the communication interface can be an input and output circuit, and specifically can comprise an input interface circuit and an output interface circuit.

[0297] The memory involved in each of the above embodiments can be a physically independent unit from the memory, or the memory can be integrated with the processor.

[0298] In an implementation, when the network device is a centralized node, the network device implementing the operations and / or processes performed by the centralized node in the above method embodiments can be implemented in the form of a processing unit calling a program. For example, the processing unit 11031 calls a program stored in the storage unit 11032 to perform the operations and / or processes performed by the centralized node in the above method embodiments. The storage unit 11032 can be a storage element on the same chip as the processing unit 11031, i.e., an on-chip storage unit, or a storage element on a different chip from the processing unit 11031, i.e., an off-chip storage unit.

[0299] In another implementation, when the network device is a first distributed node, the network device implementing the operations and / or processes performed by the first distributed node in the above method embodiments can be implemented in the form of a processing unit calling a program.

[0300] In another implementation, when the network device is a second distributed node, the network device implementing the operations and / or processes performed by the second distributed node in the above method embodiments can be implemented in the form of a processing unit calling a program.

[0301] In the above embodiments, the processor can be a central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of programs of the technical solutions of the present application, etc. For example, the processor can be a digital signal processor device, a microprocessor device, an analog-to-digital converter, a digital-to-analog converter, etc. The processor can distribute the functions of control and signal processing of the terminal device or the network device among these devices according to the respective functions of these devices. In addition, the processor can have the function of operating one or more software programs, which can be stored in the memory. The functions of the processor can be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions.

[0302] The memory can be read-only memory (ROM), other types of static storage devices that can store static information and instructions, random access memory (RAM), or other types of dynamic storage devices that can store information and instructions, electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.

[0303] In the embodiments of the present application, "and / or" is used to describe the association relationship of associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the cases of A alone, A and B together, and B alone. A and B can be singular or plural.

[0304] Those skilled in the art can appreciate that the units of the examples described in combination with the embodiments disclosed herein can be realized in electronic hardware, or a combination of computer software and electronic hardware. Whether the functions are realized in hardware or software depends on the specific application and design constraints of the technical solution. The skilled person can use different methods to realize the described functions for each specific application.

[0305] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of the units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interface, device or unit, which can be electrical, mechanical or other forms.

[0306] The units described as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, i.e. they can be located in one place or distributed on multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiments.

[0307] In addition, each function unit in each embodiment of the present application can be integrated in one processing unit, or each unit can be physically present separately, or two or more units can be integrated in one unit.

[0308] If the functions are realized in the form of software function units and sold or used as independent products, they can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application or the parts of the technical solutions that essentially contribute to the prior art can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various media that can store program codes.

[0309] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method for wireless communication, characterized in that, The method includes: The centralized node determines a first topology between the receiver and the exciter based on first information. The first topology indicates the routing path between the receiver and the exciter. The receiver and the exciter are used for radio frequency identification. The first information includes the status information of the receiver and / or the status information of the exciter. The centralized node sends a second message to the receiver, the second message indicating the first topology.

2. The method according to claim 1, characterized in that, The method further includes: The centralized node sends a third message to the exciter, the third message being used to indicate the identification information of the receiver.

3. The method according to claim 1 or 2, characterized in that, The exciter is deployed on the first distributed node.

4. The method according to claim 3, characterized in that, The receiver is deployed on the centralized node.

5. The method according to claim 3, characterized in that, The receiver is deployed on the second distributed node.

6. The method according to claim 5, characterized in that, The method is applied to an integrated access and backhaul IAB system, wherein the centralized node is the host node in the IAB system, the first distributed node is the first IAB node in the IAB system, and the second distributed node is the second IAB node in the IAB system.

7. The method according to claim 6, characterized in that, The receiver is deployed on a second distributed node, and the method further includes: The centralized node receives fourth information from the receiver, the fourth information being used to instruct the centralized node to select a first Access and Mobility Management Function (AMF) network element; The centralized node determines the first AMF network element based on the fourth information, and the first AMF network element supports the receiver authorization; The centralized node sends a fifth message to the first AMF network element, the fifth message being used to instruct the first AMF network element to authorize the receiver; The centralized node receives sixth information from the first AMF network element, and the sixth information includes information about the receiver.

8. The method according to claim 6 or 7, characterized in that, The exciter is deployed on the first distributed node, and the method further includes: The centralized node receives a seventh message from the exciter, the seventh message being used to instruct the centralized node to select a second AMF network element; The centralized node determines the second AMF network element based on the seventh information, and the second AMF network element supports the exciter authorization; The centralized node sends an eighth message to the second AMF network element, the eighth message being used to instruct the second AMF network element to authorize the exciter; The centralized node receives the ninth information from the second AMF network element, the ninth information including information about the exciter.

9. The method according to any one of claims 5 to 7, characterized in that, The method further includes: The centralized node sends a broadcast message, which is used to instruct the first distributed node and / or the second distributed node to select a parent node.

10. The method according to claim 1 or 2, characterized in that, The first information includes at least one of the following: the load information of the receiver, the maximum number of exciters supported by the receiver, or the location information of the exciters.

11. The method according to claim 1 or 2, characterized in that, The first information also includes information about a second topology, which is obtained by adjusting the second topology between the receiver and the exciter.

12. A method for wireless communication, characterized in that, The method includes: The exciter receives third information from the centralized node, the third information being used to indicate the identification information of a receiver, the receiver being determined by the centralized node according to a first topology between the receiver and the exciter, the receiver and the exciter being used for radio frequency identification, the first topology being determined according to first information, the first information including the status information of the receiver and / or the status information of the exciter, the first topology indicating the routing path between the receiver and the exciter.

13. The method according to claim 12, characterized in that, The exciter is deployed on the first distributed node.

14. The method according to claim 13, characterized in that, The receiver is deployed on the centralized node.

15. The method according to claim 13, characterized in that, The receiver is deployed on the second distributed node.

16. The method according to claim 15, characterized in that, The method is applied to the IAB system, where the centralized node is the host node in the IAB system, the first distributed node is the first IAB node in the IAB system, and the second distributed node is the second IAB node in the IAB system.

17. The method according to claim 16, characterized in that, The exciter is deployed on the first distributed node, and the method further includes: The exciter sends a seventh message to the centralized node, the seventh message being used to instruct the centralized node to select a second AMF network element, the second AMF network element supporting the exciter's authorization.

18. The method according to any one of claims 12 to 17, characterized in that, The method further includes: The exciter receives broadcast information from the centralized node, the broadcast information being used to instruct the exciter to select a parent node.

19. The method according to any one of claims 12 to 17, characterized in that, The first information includes at least one of the following: the load information of the receiver, the maximum number of exciters supported by the receiver, or the location information of the exciters.

20. The method according to any one of claims 12 to 17, characterized in that, The first information also includes information about a second topology, which is obtained by adjusting the second topology between the receiver and the exciter.

21. A method for wireless communication, characterized in that, The method includes: The receiver receives second information from the centralized node, the second information indicating a first topology between the receiver and the exciter, the first topology being determined by the centralized node based on the first information, the first topology indicating a routing path between the receiver and the exciter, the receiver and the exciter being used for radio frequency identification, the first information including the status information of the receiver and / or the status information of the exciter.

22. The method according to claim 21, characterized in that, The exciter is deployed on the first distributed node.

23. The method according to claim 22, characterized in that, The receiver is deployed on the centralized node.

24. The method according to claim 22, characterized in that, The receiver is deployed on the second distributed node.

25. The method according to claim 24, characterized in that, The method is applied to an IAB system, where the centralized node is the host node in the IAB system, the first distributed node is the first IAB node in the IAB system, and the second distributed node is the second IAB node in the IAB system.

26. The method according to claim 25, characterized in that, The receiver is deployed on a second distributed node, and the method further includes: The receiver sends a fourth message to the centralized node, the fourth message being used to instruct the centralized node to select a first AMF network element, the first AMF network element supporting authorization by the receiver.

27. The method according to claim 24 or 25, characterized in that, The method further includes: The receiver receives broadcast information from the centralized node, the broadcast information being used to instruct the receiver to select a parent node.

28. The method according to any one of claims 21 to 26, characterized in that, The first information includes at least one of the following: the load information of the receiver, the maximum number of exciters supported by the receiver, or the location information of the exciters.

29. The method according to any one of claims 21 to 26, characterized in that, The first information also includes information about a second topology, which is obtained by adjusting the second topology between the receiver and the exciter.

30. A communication device, characterized in that, The method includes a processor coupled to a memory for storing computer programs or instructions, the processor for executing the computer programs or instructions to make the method of any one of claims 1 to 11, or the method of any one of claims 12 to 20, or the method of any one of claims 21 to 29.

31. A computer-readable storage medium, characterized in that, Includes a computer program that, when run on a computer, causes the computer to perform the method as described in any one of claims 1 to 11, or causes the computer to perform the method as described in any one of claims 12 to 20, or causes the computer to perform the method as described in any one of claims 21 to 29.

32. A chip system, characterized in that, include: A processor for retrieving and running a computer program from memory, causing a communication device equipped with the chip system to perform the method as described in any one of claims 1 to 11, or causing the communication device equipped with the chip system to perform the method as described in any one of claims 12 to 20, or causing the communication device equipped with the chip system to perform the method as described in any one of claims 21 to 29.

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