WO2021168813A1 - 通信方法和通信装置 - Google Patents

通信方法和通信装置 Download PDF

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Publication number
WO2021168813A1
WO2021168813A1 PCT/CN2020/077235 CN2020077235W WO2021168813A1 WO 2021168813 A1 WO2021168813 A1 WO 2021168813A1 CN 2020077235 W CN2020077235 W CN 2020077235W WO 2021168813 A1 WO2021168813 A1 WO 2021168813A1
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WO
WIPO (PCT)
Prior art keywords
node
message
iab
local routing
local
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PCT/CN2020/077235
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English (en)
French (fr)
Inventor
朱浩仁
李欢
靳维生
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华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP20921677.9A priority Critical patent/EP4099762A4/en
Priority to PCT/CN2020/077235 priority patent/WO2021168813A1/zh
Priority to CN202080096744.1A priority patent/CN115136659A/zh
Publication of WO2021168813A1 publication Critical patent/WO2021168813A1/zh
Priority to US17/896,195 priority patent/US20220408341A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0226—Traffic management, e.g. flow control or congestion control based on location or mobility
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
    • H04W40/246—Connectivity information discovery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/74—Address processing for routing

Definitions

  • the present application relates to the field of communication, and more specifically, to a communication method and communication device.
  • IAB networks are mainly composed of wireless backhaul nodes (also called IAB nodes (IAB nodes) or relay nodes (RN)). ) And the host node of the wireless backhaul node.
  • the IAB network can support multi-hop backhaul, and wireless backhaul nodes can be cascaded by spanning tree or directed acyclic graph.
  • the wireless backhaul node provides wireless access services and wireless backhaul services for the terminal equipment.
  • the data of the terminal equipment can be transmitted by the wireless backhaul node to the donor node through the wireless backhaul link for transmission, and then the host node through the core network Transmitted to the data network. This makes the data of the terminal device need to pass through the multi-hop wireless backhaul node, the host node, and the core network to reach the data network.
  • Such a transmission method is difficult to meet the low-latency service requirements of the terminal device.
  • the present application provides a communication method and a communication device, which can reduce data detours, thereby reducing communication delay.
  • a communication method is provided, which can be executed by an IAB host node or a module (such as a chip) configured in the IAB host node.
  • the following takes the method executed by the IAB host node as an example for description.
  • the method includes: accessing a backhaul integrated IAB host node to receive a first message from a core network element, the first message being used to instruct the establishment of a local route between a first node and a second node, wherein the first node It is an IAB node; the IAB host node determines a local routing node according to the first message, where the local routing is that a data packet between the first node and the second node is locally forwarded through the local routing node.
  • the IAB host node determines to establish a local route between the first node and the second node after receiving the first message sent by the core network device, and selects a local routing node that provides local routing services for the first node and the second node ,
  • the data packet between the first node and the second node can be locally forwarded through the local routing node without passing through the upper node of the local routing node, which can reduce data detours and thereby reduce communication delay.
  • the first message includes one or more of the following: the identification of the first node, the identification of the second node, or the node group to which the second node belongs The group ID.
  • the IAB host node can determine the node that needs to establish a local route through the identifier in the first message.
  • the first node is a node that uses the 3rd Generation Partnership Project 3GPP access technology to access the network, and the first node is a non-3GPP access technology Devices connected to the network provide relay services.
  • the first node uses the 3GPP access technology to access the 3GPP network, and the first node can provide relay services for devices that establish a connection with the first node through the non-3GPP access technology, so that the The device connected to the first node can transfer data through the local route between the first node and the second node, which realizes that the device that accesses the network with non-3GPP technology can establish a local route with the node in the 3GPP network, which can reduce data detours. , To avoid waste of transmission bandwidth, reduce the probability of transmission errors, and reduce communication delay.
  • the IAB host node determines the local routing node according to the first message, including: the IAB host node determines the local routing node according to the first message and the lower node of the IAB host node The topological relationship between them determines the local routing node, where the local routing node is a common upper node of the first node and the second node.
  • the IAB host node determines a common upper node of the first node and the second node as a local routing node that provides local routing services according to the topological relationship between the first message and the lower nodes of the IAB host node, Realizing that the data packet between the first node and the second node is locally forwarded through the local routing node, it can reduce data detours, avoid waste of transmission bandwidth, reduce the probability of transmission errors, and reduce communication delay.
  • the local routing node is the smallest common upper node of the second node and the first node.
  • the smallest common upper node between the first node and the second node is used as a local route, which can realize the shortest data transmission path, minimize data detours, avoid waste of transmission bandwidth, and reduce the probability of transmission errors, and reduce communication Time delay.
  • the local routing node is an IAB node or the IAB host node.
  • the IAB node or the IAB host node can be used as a local routing node that provides local routing services for the first node and the second node, which can reduce data detours, avoid waste of transmission bandwidth, reduce the probability of transmission errors, and reduce communication delays. .
  • the local routing node is an IAB node
  • the method further includes: the IAB host node sending a second message to the local routing node, the second message being used to indicate Establish a local route between the first node and the second node.
  • the IAB host node notifies the local routing node to establish a local route between the first node and the second node through the second message, so that the data packet between the first node and the second node is locally forwarded through the local routing node , It can reduce data detours, avoid waste of transmission bandwidth, reduce the probability of transmission errors, and reduce communication delay. .
  • the second message includes one or more of the following: the identification of the first node, the identification of the second node, or the node group to which the second node belongs The group ID.
  • the local routing node can determine the node that needs to establish the local route through the identifier in the second message.
  • the local routing node is the IAB host node
  • the method further includes: the IAB host node initiates routing learning for the first node, and/or the The IAB host node generates a routing and forwarding table between the first node and the second node.
  • the IAB host node initiates routing learning for the first node, which may be the IAB host node learning the MAC address or IP address of the first node, or the IAB host node learning to access through non-3GPP access technology
  • the MAC address or IP address of the terminal device of the first node may be the IAB host node learning the MAC address or IP address of the first node, or the IAB host node learning to access through non-3GPP access technology.
  • the IAB host node when the node providing local routing services for the first node and the second node is the IAB host node itself, the IAB host node initiates routing learning for the first node to realize the relationship between the first node and the second node. Data packets in between are locally forwarded through the local routing node, which can reduce data detours, avoid waste of transmission bandwidth, reduce the probability of transmission errors, and reduce communication delay. .
  • the second node includes a terminal device and/or an IAB node.
  • local routes can be established between IAB nodes and between IAB nodes and terminal devices, which can reduce data detours, avoid waste of transmission bandwidth, reduce transmission error probability, and reduce communication delay.
  • the method further includes: the IAB host node receives a third message sent by the core network element, the third message is used to instruct to delete the first node and The local route between the second node; the IAB host node sends a fourth message to the local routing node, the fourth message is used to instruct the local routing node to delete the local route between the first node and the second node .
  • the local routing relationship between nodes can be deleted through the third message, the communication in the prior art can be restored, and the communication mode can be flexibly switched according to the network situation or the communication situation.
  • a communication method is provided.
  • the method can be executed by a core network element or a module (such as a chip) configured in the core network element.
  • the following takes the method executed by the core network element as an example for description.
  • the method includes: a core network element receives a fifth message sent by an application function AF network element, the fifth message is used to request the establishment of a local route between a first node and a second node, wherein the first node is an access Back to the integrated IAB node, the local routing means that the data packet between the first node and the second node is locally forwarded through the local routing node; the core network element sends the first message to the IAB host node, and the first The message is used to indicate the establishment of a local route between the first node and the second node.
  • the first message and/or the fifth message includes one or more of the following: the identification of the first node, the identification of the second node, or the The group ID of the node group to which the second node belongs.
  • the local routing node is an IAB node or the IAB host node.
  • the second node includes a terminal device and/or an IAB node.
  • the first node is a node that uses 3GPP access technology to access the network, and the first node provides equipment for accessing the network through non-3GPP access technology.
  • Relay service is a node that uses 3GPP access technology to access the network, and the first node provides equipment for accessing the network through non-3GPP access technology.
  • the method further includes: the core network element generates the association information between the first node and the second node, or the core network element generates Association information of the node group to which the first node and the second node belong.
  • the generation of the associated information through the core network element can help realize the establishment of a local route between the first node and the second node, thereby reducing the communication delay.
  • the method further includes: the core network element receiving a sixth message sent by the AF network element, the sixth message being used to request deletion of the first node and The local route between the second node; the core network element sends a seventh message to the IAB host node, where the seventh message is used to instruct to delete the local route between the first node and the second node.
  • a communication method is provided, which can be executed by a local routing node or a module (such as a chip) configured on the local routing node.
  • the following takes the method executed by the local routing node as an example for description.
  • the method includes: a local routing node receives a second message sent by an access backhaul integrated IAB host node, the second message is used to instruct to establish a local route between a first node and a second node, and the first node is an IAB Node; the local routing node establishes a local route between the first node and the second node according to the second message, where the local route means that a data packet between the first node and the second node passes through the local
  • the routing node performs local forwarding.
  • the second message includes one or more of the following: the identification of the first node, the identification of the second node, or the node group to which the second node belongs The group ID.
  • the local routing node is an IAB node or the IAB host node.
  • the second node includes a terminal device and/or an IAB node.
  • the first node is a node that uses 3GPP access technology to access the network, and the first node provides equipment for accessing the network through non-3GPP access technology. Relay service.
  • the method further includes: the local routing node initiates routing learning for the first node, and/or the local routing node generates the first node and the The routing and forwarding table between the second nodes.
  • the method further includes: the local routing node receives a data packet in a first format sent by the first node, where the first format corresponds to 3GPP access technology,
  • the data packet in the first format includes data sent by a third node to the second node.
  • the third node is a node that uses a non-3GPP access technology to establish a wireless connection with the first node; the local routing node sends the data to the first node.
  • a data packet in a format is locally forwarded to the second node.
  • the data packet of the first node is locally forwarded through the local routing node without passing through the upper node of the local routing node, which can reduce data detours, avoid waste of transmission bandwidth, reduce transmission error probability, and reduce communication delay.
  • the first format specifically corresponds to the user plane configuration of the first node.
  • a communication method is provided, which can be executed by a first node or a module (such as a chip) configured in the first node.
  • the following takes the method executed by a local routing node as an example for description.
  • the method includes: a first node receives a data packet in a second format sent by a third node, the data packet in the second format includes first data, and the first data is data sent by the third node to the second node,
  • the first node is an access backhaul integrated IAB node, the first node and the second node have established a local route, and the local route is the local route of the data packet between the first node and the second node
  • the node performs local forwarding;
  • the first node sends a data packet in a first format to a local routing node, where the data packet in the first format includes the first data.
  • the method further includes:
  • the first node performs format conversion on the data packet in the second format to obtain the data packet in the first format.
  • the first node and/or the second node are nodes that use 3GPP access technology to access the network, and the first format corresponds to the 3GPP access technology
  • the first format specifically corresponds to the user plane configuration of the first node.
  • the third node is a node that uses a non-3GPP access technology to establish a wireless connection with the first node, and the second format corresponds to the non-3GPP access technology .
  • the local routing node is an IAB node or the IAB host node.
  • the second node includes a terminal device and/or an IAB node.
  • a communication device including: a transceiving unit, configured to receive a first message from a core network element, where the first message is used to instruct the establishment of a local route between a first node and a second node,
  • the first node is an access backhaul integrated IAB node;
  • the processing unit is configured to determine a local routing node according to the first message, where the local routing is a data packet between the first node and the second node Local forwarding is performed through the local routing node.
  • the first message includes one or more of the following: the identification of the first node, the identification of the second node, or the node group to which the second node belongs The group ID.
  • the first node is a node that uses 3GPP access technology to access the network, and the first node provides equipment for accessing the network through non-3GPP access technology Relay service.
  • the processing unit is specifically configured to determine the local routing node according to the topological relationship between the first message and the lower node of the IAB host node, wherein the local routing The node is a common upper node of the first node and the second node.
  • the local routing node is the smallest common upper node of the second node and the first node.
  • the local routing node is an IAB node or an IAB host node.
  • the local routing node is an IAB node
  • the transceiver unit is further configured to send a second message to the local routing node, and the second message is used to instruct to establish A local route between the first node and the second node.
  • the second message includes one or more of the following: the identification of the first node, the identification of the second node, or the node group to which the second node belongs The group ID.
  • the local routing node is an IAB host node
  • the processing unit is also used to start routing learning for the first node, and/or the processing unit It is also used to generate a routing and forwarding table between the first node and the second node.
  • the second node includes a terminal device and/or an IAB node.
  • the transceiver unit is further configured to receive a third message sent by the core network element, and the third message is used to instruct to delete the first node and the second node. Local routing between nodes; the transceiver unit is further configured to send a fourth message to the local routing node, where the fourth message is used to instruct the local routing node to delete the local routing between the first node and the second node.
  • a communication device including a processor.
  • the processor is coupled with the memory and can be used to execute instructions in the memory to implement the foregoing first aspect and the method in any one of the possible implementation manners of the first aspect.
  • the communication device further includes a memory.
  • the communication device further includes a communication interface, and the processor is coupled with the communication interface.
  • the communication device is an IAB host node.
  • the communication interface may be a transceiver, or an input/output interface.
  • the communication device is a chip configured in the IAB host node.
  • the communication interface may be an input/output interface.
  • the transceiver may be a transceiver circuit.
  • the input/output interface may be an input/output circuit.
  • a communication device including: a transceiver unit, configured to receive a fifth message sent by an application function AF network element, the fifth message being used to request the establishment of a local route between a first node and a second node ,
  • the first node is an integrated IAB node for access and backhaul, and the local routing is that data packets between the first node and the second node are locally forwarded through a local routing node
  • the processing unit is configured to Five messages determine the establishment of a local route between the first node and the second node
  • the transceiver unit is also used to send a first message to the IAB host node, the first message is used to instruct the establishment of the first node and the second node Local routing between.
  • the first message and/or the fifth message includes one or more of the following: the identity of the first node, the identity of the second node, or the The group ID of the node group to which the second node belongs.
  • the local routing node is an IAB node or the IAB host node.
  • the second node includes a terminal device and/or an IAB node.
  • the first node is a node that uses 3GPP access technology to access the network, and the first node provides equipment for accessing the network through non-3GPP access technology Relay service.
  • the processing unit is further configured to generate association information between the first node and the second node, or the processing unit is further configured to generate the first node Association information between the node and the node group to which the second node belongs.
  • the transceiver unit is further configured to receive a sixth message sent by the AF network element, where the sixth message is used to request deletion of the first node and the second node
  • the transceiver unit is also used to send a seventh message to the IAB host node, where the seventh message is used to instruct to delete the local route between the first node and the second node.
  • a communication device including a processor.
  • the processor is coupled with the memory, and can be used to execute instructions in the memory to implement the foregoing second aspect and the method in any one of the possible implementation manners of the second aspect.
  • the communication device further includes a memory.
  • the communication device further includes a communication interface, and the processor is coupled with the communication interface.
  • the communication device is a core network element.
  • the communication interface may be a transceiver, or an input/output interface.
  • the communication device is a chip configured in a core network element.
  • the communication interface may be an input/output interface.
  • the transceiver may be a transceiver circuit.
  • the input/output interface may be an input/output circuit.
  • a communication device including: a transceiver unit, configured to receive a second message sent by an access backhaul integrated IAB host node, and the second message is used to instruct to establish a relationship between the first node and the second node.
  • the first node is an IAB node; the processing unit is configured to establish a local route between the first node and the second node according to the second message, where the local route is between the first node and the second node.
  • the data packets between the second nodes are locally forwarded through the communication device.
  • the second message includes one or more of the following:
  • the identity of the first node, the identity of the second node, or the group identity of the node group to which the second node belongs is the identity of the first node, the identity of the second node, or the group identity of the node group to which the second node belongs.
  • the communication device is configured in an IAB node or the communication device is an IAB node, or the communication device is configured in the IAB host node or the communication device is the IAB host node.
  • the second node includes a terminal device and/or an IAB node.
  • the first node is a node that uses 3GPP access technology to access the network, and the first node provides equipment for accessing the network through non-3GPP access technology Relay service.
  • the processing unit is further configured to initiate routing learning for the first node, and/or the processing unit is further configured to generate the first node and the first node The routing and forwarding table between two nodes.
  • the transceiver unit is further configured to receive a data packet in a first format sent by the first node, where the first format corresponds to the 3GPP access technology, and the first The formatted data packet includes the data sent by the third node to the second node, and the third node is a node that uses non-3GPP access technology to establish a wireless connection with the first node; the processing unit is also used to The formatted data packet is locally forwarded to the second node.
  • the first format specifically corresponds to the user plane configuration of the first node.
  • a communication device including a processor.
  • the processor is coupled with the memory and can be used to execute instructions in the memory to implement the third aspect and the method in any one of the possible implementation manners of the third aspect.
  • the communication device further includes a memory.
  • the communication device further includes a communication interface, and the processor is coupled with the communication interface.
  • the communication device is a local routing node.
  • the communication interface may be a transceiver, or an input/output interface.
  • the communication device is a chip configured in a local routing node.
  • the communication interface may be an input/output interface.
  • the transceiver may be a transceiver circuit.
  • the input/output interface may be an input/output circuit.
  • a communication device including: a transceiver unit, configured to receive a data packet in a second format sent by a third node, the data packet in the second format includes first data, and the first data is For data sent by the third node to the second node, a local route has been established between the communication device and the second node, and the local route is that data packets between the communication device and the second node are locally forwarded through the local routing node;
  • the processing unit generates a data packet in a first format, and the data packet in the first format includes the first data; the transceiver unit is further configured to send the data packet in the first format to a local routing node.
  • the communication device is an IAB node or the communication device is configured in an IAB node.
  • the processing unit is specifically configured to perform format conversion on the data packet in the second format to obtain the data packet in the first format.
  • the communication device and/or the second node are nodes that use 3GPP access technology to access the network, and the first format is compatible with the 3GPP access technology.
  • the first format specifically corresponds to the user plane configuration of the communication device.
  • the third node is a node that uses a non-3GPP access technology to establish a wireless connection with the communication device, and the second format is compatible with the non-3GPP access technology. correspond.
  • the local routing node is an access backhaul integrated IAB node or the IAB host node.
  • the second node includes a terminal device and/or an IAB node.
  • a communication device including a processor.
  • the processor is coupled with the memory and can be used to execute instructions in the memory to implement the foregoing fourth aspect and the method in any one of the possible implementation manners of the fourth aspect.
  • the communication device further includes a memory.
  • the communication device further includes a communication interface, and the processor is coupled with the communication interface.
  • the communication device is the first node.
  • the communication interface may be a transceiver, or an input/output interface.
  • the communication device is a chip configured in the first node.
  • the communication interface may be an input/output interface.
  • the transceiver may be a transceiver circuit.
  • the input/output interface may be an input/output circuit.
  • a processor including: an input circuit, an output circuit, and a processing circuit.
  • the processing circuit is configured to receive a signal through the input circuit and transmit a signal through the output circuit, so that the processor executes the method in any one of the first aspect to the fourth aspect and any one of the first aspect to the fourth aspect .
  • the above-mentioned processor can be one or more chips
  • the input circuit can be an input pin
  • the output circuit can be an output pin
  • the processing circuit can be a transistor, a gate circuit, a flip-flop, and various logic circuits, etc.
  • the input signal received by the input circuit may be received and input by, for example, but not limited to, a receiver
  • the signal output by the output circuit may be, for example, but not limited to, output to the transmitter and transmitted by the transmitter
  • the circuit can be the same circuit, which is used as an input circuit and an output circuit at different times.
  • the embodiments of the present application do not limit the specific implementation manners of the processor and various circuits.
  • a processing device including a processor and a memory.
  • the processor is used to read instructions stored in the memory, receive signals through a receiver, and transmit signals through a transmitter, so as to execute any one of the first to fourth aspects and any one of the possible implementation manners of the first to fourth aspects In the method.
  • processors there are one or more processors and one or more memories.
  • the memory may be integrated with the processor, or the memory and the processor may be provided separately.
  • the memory can be a non-transitory (non-transitory) memory, such as a read only memory (ROM), which can be integrated with the processor on the same chip, or can be set in different On the chip, the embodiment of the present application does not limit the type of the memory and the setting mode of the memory and the processor.
  • ROM read only memory
  • sending instruction information may be a process of outputting instruction information from the processor
  • receiving capability information may be a process of receiving input capability information by the processor.
  • the data output by the processor can be output to the transmitter, and the input data received by the processor can come from the receiver.
  • the transmitter and receiver can be collectively referred to as a transceiver.
  • the processing device in the fourteenth aspect described above may be one or more chips.
  • the processor in the processing device can be implemented by hardware or software.
  • the processor may be a logic circuit, integrated circuit, etc.; when implemented by software, the processor may be a general-purpose processor, which is implemented by reading the software code stored in the memory, and the memory may Integrated in the processor, can be located outside the processor, and exist independently.
  • a computer program product includes: a computer program (also called code, or instruction), which when the computer program is run, causes the computer to execute the first to fourth aspects above. Aspect and the method in any one of the possible implementation manners of the first aspect to the fourth aspect.
  • a computer-readable storage medium stores a computer program (also called code, or instruction) when it runs on a computer, so that the computer executes the above-mentioned first aspect To the method in the fourth aspect and any one of the possible implementation manners of the first aspect to the fourth aspect.
  • a computer program also called code, or instruction
  • a communication system including the aforementioned IAB host node, core network element, local routing node, and first node.
  • Fig. 1 is a schematic block diagram suitable for a communication system provided by an embodiment of the present application.
  • Fig. 2 is a schematic flowchart of the communication method provided by the present application.
  • Fig. 3 is a schematic architecture diagram of the communication method provided by the present application.
  • FIG. 4 is another schematic architecture diagram of the communication method provided by the present application.
  • Fig. 5 is a schematic block diagram of an example of the communication device of the present application.
  • Fig. 6 is a schematic configuration diagram of an example of the communication device of the present application.
  • FIG. 7 is a schematic configuration diagram of an example of the communication device of the present application.
  • a node that supports integrated access and backhaul is called a wireless backhaul node, and the wireless backhaul node may also be called a relay node (RN) or an IAB node (IAB node).
  • RN relay node
  • IAB node IAB node
  • Fig. 1 is a schematic block diagram suitable for a communication system provided by an embodiment of the present application.
  • the communication system may include application function network element 101, core network 102, IAB-donor 103, one or more IAB nodes (IAB-node), such as IAB node 104, IAB
  • IAB-node IAB node
  • the node 105 may also include one or more user equipment (UE), such as UE106 to UE108.
  • the IAB host node can be connected to the core network (core network, CN), can provide access services for terminal devices, and can also provide IAB nodes with a backhaul exit to the core network; IAB nodes are not directly connected to the core network, but through The (single-hop or multi-hop) wireless backhaul link is connected to the IAB host node, and the IAB host node returns to the core network.
  • the IAB node can provide access services for terminal devices, and can also provide relays for backhaul links for other IAB nodes.
  • the IAB donor node is also called IAB donor (IAB donor) or donor base station (donor gNodeB, DgNB).
  • IAB donor IAB donor
  • donor base station donor gNodeB
  • the IAB host node can be an access network element with a complete base station function, or it can be an access network element in the form of a separate centralized unit (CU) and distributed unit (DU).
  • the IAB host node CU may also have a separate control plane (CP) and user plane (UP) form.
  • CP control plane
  • UP user plane
  • a CU is composed of one CU-CP and multiple CU-UPs. This embodiment of the application There is no restriction on this.
  • IAB node includes two parts: mobile terminal (MT) and DU.
  • the function of the MT part is equivalent to the terminal equipment, the IAB node connects to the upper IAB node or the IAB host node through the MT; the function of the DU part is the same as the ordinary DU, and the IAB node connects to the terminal equipment or the lower IAB node through the DU.
  • the CU of the IAB host node and the DU of the IAB node include a communication interface (for example, F1 interface), and the DU of the IAB host node or the DU of the IAB node and the MT of the lower IAB node include a communication interface (for example, Uu interface).
  • the communication system may also include an IAB node.
  • the IAB node uses the third generation partnership project (3 rd generation partnership project, 3GPP) access technology to access the network, and can be used for those who use non-3GPP access technology to access the network.
  • the device provides relay services.
  • the IAB node 105 shown in FIG. 1, the IAB node 105 may have the function of an access point (AP) of a non-3GPP access technology (for example, WIFI access technology), and the UE 106 may use a non-3GPP access technology and The IAB node establishes an access link.
  • the data of the UE 106 on the access link of the non-3GPP access technology can be forwarded to the 3GPP network through the IAB node 105.
  • the IAB node 105 can be set separately from an access point (AP) of a non-3GPP access technology and establish a connection, and a device that uses a non-3GPP access technology to access the network can forward data to the IAB node 105 through the IAB node 105 3GPP network.
  • AP access point
  • a device that uses a non-3GPP access technology to access the network can forward data to the IAB node 105 through the IAB node 105 3GPP network.
  • the terminal equipment in the embodiments of the present application may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile equipment, user terminal, terminal , Wireless communication equipment, user agent or user device.
  • the terminal device in the embodiment of the present application may be a mobile phone (mobile phone), a tablet computer (pad), a computer with a wireless transceiver function, a virtual reality (VR) terminal device, and an augmented reality (AR) terminal Equipment, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical, wireless terminals in smart grid, transportation safety ( Wireless terminal in transportation safety, wireless terminal in smart city, wireless terminal in smart home (smart home), cellular phone, cordless phone, session initiation protocol (SIP) phone, wireless local Loop (wireless local loop, WLL) stations, personal digital assistants (personal digital assistants, PDAs), handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, in-vehi
  • wearable devices can also be called wearable smart devices, which are the general term for using wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes.
  • a wearable device is a portable device that is directly worn on the body or integrated into the user's clothes or accessories.
  • Wearable devices are not only a kind of hardware device, but also realize powerful functions through software support, data interaction, and cloud interaction.
  • wearable smart devices include full-featured, large-sized, complete or partial functions that can be achieved without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, and need to cooperate with other devices such as smart phones.
  • the terminal device may also be a terminal device in an Internet of Things (IoT) system.
  • IoT Internet of Things
  • Its main technical feature is to connect objects to the network through communication technology, so as to realize the intelligent network of human-machine interconnection and interconnection of things.
  • the previous hop of a node in the downlink is the parent node of the node, or it can become the parent node.
  • the multi-hop node before the node is the ancestor node of the node, that is, the next node of a node in the uplink
  • the hop is the parent node of the node, and the multi-hop node after the node is the ancestor node of the node.
  • the upper node of a node includes the parent node and ancestor node of the node.
  • the next hop of a node in the downlink is the child node of the node, or it can become a child node.
  • the multi-hop nodes after the node are the descendants of the node, that is, the upper node of a node in the uplink
  • One hop is the child node of the node
  • the previous multi-hop node of the node is the descendant node of the node.
  • the lower-level nodes of a node include the child nodes and descendant nodes of the node.
  • Fig. 2 is a schematic flowchart of the communication method provided by the present application.
  • the network architecture between the nodes and network elements in Figure 2 can be as shown in Figure 3, between the application function (AF) network element and the core network (core network, CN) network element, and the CN network element
  • the information exchange with the IAB host node can be wired communication, and the communication between the IAB host node and the lower-layer node, and between the lower-layer nodes of the IAB host node can be through the wireless backhaul link or the access link.
  • Figure 3 uses spanning tree cascading between IAB nodes as an example. IAB nodes can also be cascaded in a directed acyclic graph (DAG) manner, but this application does not Limited to this.
  • DAG directed acyclic graph
  • the method shown in FIG. 2 may include S210 to S280. The steps in this method are described in detail below.
  • the AF network element sends a fifth message to the core network element, where the fifth message is used to request the establishment of a local route between the first node and the second node.
  • the core network element receives a fifth message sent by the AF network element, where the fifth message is used to request the establishment of a local route between the first node and the second node, where the first node is an IAB node.
  • the second node may be a terminal device or an IAB node.
  • Local routing means that data packets between two nodes are locally forwarded through the local routing node without passing through the upper node of the local routing node.
  • node A and node B have established a local route.
  • the local routing node forwards it to node B according to the routing forwarding table
  • the data packet the data packet does not need to be forwarded by the upper node of the local routing node, and the communication delay can be reduced.
  • node A and node B have established a local route
  • node A or node B also includes lower nodes
  • data packets between node A and node B, and the lower nodes of node A and node B can also pass through node A and node B.
  • the local routing node of B performs local forwarding without passing through the upper node of the local routing node.
  • the first node is a node that uses a 3GPP access technology to access the network, and the first node provides a relay service for a device that accesses the network through a non-3GPP access technology.
  • the first node uses 3GPP access technology to access the 3GPP network
  • the sixth node uses non-3GPP access technology to access the network.
  • the sixth node uses WIFI technology to establish a wireless connection with the first node
  • the first node may be an IAB node with the function of a WIFI access point, that is, the sixth node may use WIFI access technology to access the first node, or the sixth node may use WIFI access technology to access the WIFI access point
  • the first node can establish a connection with the WIFI access point, that is, the first node can provide the service of the 3GPP network to the sixth node directly or through the WIFI access point.
  • the second node is the node where the first node needs to establish a local route
  • the fifth message is used to establish a local route between the first node and the second node, and may be used for the fifth message in specific implementation.
  • the fifth message may also be used to establish a local route between the first node and multiple second nodes.
  • the fifth message may include the identification of the first node.
  • the fifth message is used to request the establishment of a local route between the first node and other nodes that have established a session in the core network (that is, an example of the second node).
  • the core network element After receiving the fifth message, the core network element considers that the AF network element requests to establish a local route between the first node and other nodes that have established sessions in the core network.
  • a node group that has established a local route is pre-configured in the core network element, and the node in the node group is the second node, and optionally, it also includes the identification of one or more nodes included in the node group,
  • the core network element After receiving the fifth message, the core network element confirms that the first node needs to be added to the node group, that is, the first node and the nodes in the node group are established (ie, another example of the second node) Between local routes.
  • the core network element After receiving the fifth message, the core network element confirms a node capable of establishing a local route with the first node, and provides the first node and a node capable of establishing a local route with the first node to establish a local route Service.
  • the identity of the first node may be a generic public subscription identifier (GPSI), an international mobile subscriber identity (IMSI), or an international mobile equipment identity (international mobile equipment identity). , IMEI).
  • GPSI public subscription identifier
  • IMSI international mobile subscriber identity
  • IMEI international mobile equipment identity
  • the fifth message may include the identifier of the first node and the group identifier of the node group to which the second node belongs.
  • a node group composed of multiple second nodes is node group A, that is, the first node needs to establish a local route with this node group A, and the fifth message includes the identity of the first node and the group identity of node group A.
  • the fifth message is used to request the establishment of a local route between the first node and the node group A.
  • the node group A may be a group of nodes that have established local routes with each other. It can also be said that the fifth message is used to indicate that the first node is added to the node group A, which means that the fifth message is used to request the establishment of a local route of the node group A including the first node.
  • the fifth message is used to request the establishment of a local route between the first node and each node in the node group.
  • the fifth message may include the identification of the first node and the identification of the second node.
  • the second node is a node where the first node needs to establish a local route
  • the fifth message includes the identification of the first node and the identification of each of the one or more second nodes.
  • the fifth message can be used to request the establishment of a local route between the first node and the one or more second nodes, that is, the fifth message can be used to request the first node to communicate with one or more second nodes.
  • Each second node in the nodes establishes a local route.
  • the fifth message may also be used to request the establishment of a local route between any two of the first node and the one or more second nodes. That is, the fifth message includes multiple node identifiers, including the identifier of the first node and the identifier of the second node, and the fifth message may be used to request the establishment of local routes for the multiple nodes.
  • the core network element after receiving the fifth message, the core network element generates the association information between the first node and the second node, or generates the relationship between the node group to which the first node and the second node belong Related information between.
  • the core network element After receiving the fifth message, the core network element establishes a mapping relationship between the identity of the first node and the identity of the second node, and generates the mapping relationship information, that is, association information.
  • the association information is used to identify the first node and the second node.
  • the second node needs to establish a local route. According to the mapping relationship information, the second node associated with the first node can be queried through the first node identifier, or the identifier of the first node can be queried through the identifier of the second node.
  • the core network element after receiving the fifth message, the core network element establishes a mapping relationship between the identity of the first node and the group identity of the node group to which the second node belongs, and generates the mapping relationship information, that is, the association information, and the association information is used for To identify the node group to which the first node and the second node belong, a local route needs to be established.
  • the mapping relationship information the second node group to which the second node associated with the first node belongs can be queried through the first node identifier, or the identity of the first node can be queried through the group identifier of the second node group.
  • the second node when the second node is an IAB node, it can be considered that the control plane and the network management plane of the core network are unified, that is, a situation where management and control are integrated.
  • the core network can learn the information of the IAB node, and provide services for establishing a local route between the first node and the second node according to the request of the fifth message.
  • S220 The CN network element sends a first message to the IAB host node, where the first message is used to instruct to establish a local route between the first node and the second node.
  • the IAB host node receives the first message sent by the CN network element, and determines the node that needs to establish a local route.
  • the first message may include the identification of the first node.
  • the IAB host node After the IAB host node receives the first message including the identifier of the first node, it confirms that a local routing relationship between the first node and the node under the IAB host node (that is, another example of the second node) needs to be established.
  • the IAB host node considers that the first node needs to be added to the node group A.
  • the IAB host node After the IAB host node receives the first message, it confirms that the IAB host node can establish a local route with the first node, and provides the first node and the node that can establish a local route with the first node. Nodes provide services for establishing local routes.
  • the first message may include the identification of the first node and the group identification of the node group to which the second node belongs.
  • the first message may be used to instruct the first node to join the node group A composed of multiple second node groups, that is, to instruct the first node and the nodes included in the node group A to establish a local route, that is, to instruct the first node After joining node group A, node group A establishes a local route.
  • the first message is used to instruct to establish a local route between the first node and each node in the node group.
  • the first message may include the identification of the first node and the identification of the second node.
  • the first message includes the identification of the first node and the identification of each of the one or more second nodes.
  • the first message may be used to instruct to establish a local route between the first node and one or more second nodes. That is, the first message includes multiple node identifiers, including the identifier of the first node and the identifier of the second node, and the first message may be used to instruct the establishment of a local route for the multiple nodes.
  • the first message may also be used to indicate that a local route is established between the first node and any two of the one or more second nodes.
  • the first message may include association information generated by the core network device. According to the association information, the IAB host node can determine that a local route between the first node and the second node needs to be established, or, according to the association information, the IAB host node can determine that the first node needs to be added to the node group to which the second node belongs middle.
  • the IAB host node determines a local routing node.
  • the IAB host node determines to be one of the first node and the second node according to the topological relationship between the lower nodes of the IAB host node Local routing nodes that provide local routing services for data communication. Specifically, the IAB host node determines the common upper node of the first node and the second node according to the topological relationship between the lower nodes of the IAB host node, and then selects for forwarding between the first node and the second node The local routing node of the data.
  • the local routing nodes of the first node and the second node are the smallest common upper node of the first node and the second node.
  • the AF network element sends a fifth message to the core network element to request the establishment of a local route between the first node and the second node.
  • the network element After receiving the fifth message, the network element generates a first message and sends it to the IAB host node, instructing the IAB host node to establish a local route between the first node and the second node.
  • the IAB host node determines that the common upper node of the first node and the second node includes the third node and the IAB host node itself according to the topological relationship between the lower nodes.
  • the IAB host node can select the smallest common node between the first node and the second node as the local routing node between the first node and the second node, so that after the local routing between the first node and the second node is established ,
  • the data packet between the first node and the second node and the data packet between the first node and the lower node of the second node will be forwarded through the third node without passing through the upper node of the third node.
  • a data packet sent by the sixth node to the second node will be sent to the third node through the first node, and the third node will perform local routing, and then forward to the second node through the fifth node to implement local routing.
  • UE1 and UE2 have established local routes, and the local routing node between UE1 and UE2 is IAB node 3.
  • the local routing node group composed of UE1 and UE2 can be called node group A
  • AF network element Send a fifth message to the core network element to request the IAB node 4 (that is, an example of the first node) to join the node group A, that is, UE1 and UE2 are the second nodes, and the first node, that is, the IAB node 4 needs to communicate with two The second node, namely UE1 and UE2, establish a local route.
  • the AF network element requests the IAB node 4 to establish local routes with UE1 and UE2.
  • the fifth message includes the identifier of the IAB node 4.
  • the fifth message may also include the identifier of the node group A, and/or the identifiers of UE1 and UE2.
  • the core network element generates a first message to instruct the IAB host node to establish local routing nodes between IAB node 4 and UE1 and UE2. It can also be said that the first message is used to instruct the IAB host node to add IAB node 4 to node group A, and establish Local route of node group A.
  • the IAB host node determines the common upper node of the IAB node 4 and UE1 and UE2 according to the topological relationship between the lower nodes of the IAB host node, including the IAB host node itself and the IAB node 1.
  • the IAB host node may select one of the IAB host node and the IAB node 1 as the local routing node of the IAB node 4 and UE1 and UE2. For example, the IAB host node selects the IAB node 1 as the local routing node. It can also be said that the IAB host node selects the IAB node 1 as the local routing node of the node group A after the IAB node 4 joins the node group A.
  • IAB node 1 enables the data packets between IAB node 4 and UE1 and UE2 and the data packets between UE3 and UE1 and UE2 of IAB node 4 to pass through IAB node 1. Forwarding without going through the upper node of IAB node 1.
  • UE1, UE2, and IAB node 4 may be nodes that use 3GPP access technology to access the network
  • UE3 may be nodes that use non-3GPP access technology to access the network.
  • the IAB node 4 may have the function of an AP of a non-3GPP access technology, and the UE3 may use the non-3GPP access technology to establish an access link with the IAB node.
  • the data of UE3 on the access link of this non-3GPP access technology can be forwarded to the 3GPP network through the IAB node 4.
  • the IAB node 4 can be set separately from the AP of the non-3GPP access technology and establish a connection. After the UE3 accesses the AP, the IAB node 4 can forward data to the 3GPP network.
  • IAB node 4 and UE1 and UE2 establish local routes through the local routing node IAB node 1, the communication data packets between UE3 and UE and UE2 can be routed and forwarded locally through IAB node 1, without passing through the upper node of IAB node 1. . It can realize the establishment of local routing between nodes using non-3GPP access technology and nodes in the 3GPP network, so as to achieve the purpose of reducing communication delay.
  • the local routing node before IAB node 4 joins node group A is IAB node 3
  • the local routing node is changed to IAB node 1 after IAB node 4 joins node group A, and the local routing node of node group A has changed.
  • the IAB host node instructs the IAB node 3 to delete the local routing rules of UE2 and UE3, that is, after deleting the local routing rules, the data between UE2 and UE3 will not be locally forwarded by the IAB node 3 (that is, the data packets sent by UE1 to UE2 are transmitted by the IAB node 3 forward to UE2, or the data packet sent by UE2 to UE1 is forwarded by IAB node 3 to UE1), but after being forwarded by IAB node 3 to IAB node 1, IAB node 1 performs local routing and forwarding.
  • the IAB host node does not instruct IAB node 3 to delete the local routing rules of IAB node 3, and the data packets between UE1 and UE2 are still routed and forwarded by IAB node 3, and the data packets between UE1, UE2 and IAB node 4
  • the IAB node 1 performs local routing and forwarding, but the application is not limited to this.
  • the IAB host node sends a second message to the local routing nodes of the first node and the second node selected by the IAB host node, where the second message is used to instruct to establish a local route between the first node and the second node.
  • the second message is used to instruct to establish a local route between the first node and the second node.
  • the second message may be included to instruct the local routing node to update the local routing rule, that is, the data packet between the first node and the second node is routed and forwarded locally by the node that receives the second message.
  • the second message may also be included to instruct the local routing node to learn the route of the first node, or to start the routing capability of the local routing node for the first node, for example, to learn the MAC address or IP address of the first node, or, Learn the MAC address or IP address of the terminal device that establishes a wireless connection with the first node through the non-3GPP access technology, and generate a routing table entry.
  • the local routing node establishes a local route between the first node and the second node.
  • the local routing node After receiving the second message sent by the IAB host node, the local routing node determines to establish a local route between the first node and the second node at the local routing node.
  • the local routing node learns the MAC address or IP address of the first node, or learns the MAC address or IP address of a terminal device that accesses the first node through a non-3GPP access technology, and generates a routing table entry so that the first node
  • the data packet with the second node can be locally routed and forwarded by the local routing node, without the need for an upper node of the local routing node.
  • the IAB host node sends an instruction message to the first node, where the instruction message is used to instruct the first node to learn the route of the local routing node, or to start the routing capability of the first node for the local routing node, for example, learn The MAC address or IP address of the first node, or the MAC address or IP address of a terminal device that accesses the first node through a non-3GPP access technology, is learned to generate a MAC address routing table entry.
  • the indication message may also be used to indicate to start the data exchange capability of the first node.
  • the data exchange capability may be encapsulating the data packets of the terminal equipment using non-3GPP access technology into PDCP/SDAP data packets, and the PDCP
  • the /SDAP data packet is decapsulated into a data packet that can be decoded by terminal equipment of non-3GPP access technology.
  • the Ethernet frame of the UE adopting the WIFI access technology is encapsulated into a PDCP/SDAP data packet
  • the PDCP/SDAP data packet is encapsulated into an Ethernet frame.
  • the local routing node starts to return to the upper node a confirmation message indicating that the local routing node has been successfully constructed, so that the IAB host node and the core network element are The upper node inside confirms that the local route between the first node and the second node is successfully constructed.
  • S260 The first node sends a data packet to the local routing node, and the destination address of the data packet is the second node.
  • the data packet sent by the first node to the local routing node can be a data packet sent by the first node to the second node, or a data packet sent by a lower-level node of the first node to the second node.
  • the first node forwards or provides a relay service by the first node.
  • the first node provides a relay service for the third node, and the data packet sent by the first node to the local routing node includes data sent by the third node to the second node.
  • the third node uses a non-3GPP access technology to establish a wireless connection with the first node, and the first node provides a relay service for the third node.
  • the first node forwards the data packet sent by the third node to the local routing node, where the data packet sent by the third node to the first node is a data packet in the second format, and the data packet in the second format is Includes the data sent by the third node to the second node.
  • the second format corresponds to the non-3GPP access technology. For example, if the non-3GPP access technology is a WIFI access technology, the second format is an Ethernet frame.
  • the first node After receiving the data packet in the second format, the first node determines that the data packet needs to be transmitted to the 3GPP network, and then generates a data packet in the first format according to the data packet, and the first format corresponds to the 3GPP access technology
  • the first format may correspond to the user plane configuration of the first node.
  • the data packet in the first format may be a PDCP/SDAP data packet. That is, the first node can convert the data packet in the second format sent by the third node into the data packet in the first format corresponding to the user plane resource of the first node, so that the data of the third node can pass through the data packet of the first node.
  • User plane resources are transmitted in the 3GPP network.
  • the data of the third node can be transmitted in the 3GPP network through user plane resources such as data radio bear (DRB) and/or radio link control (RLC) of the first node.
  • DRB data radio bear
  • RLC radio link control
  • the first node can also transfer the data packets sent by the nodes in the 3GPP network to the third node to the third node, including converting the data packets in the first format into the data packets in the second format and sending them to the third node .
  • the local routing node executes S270.
  • the local routing node determines a local route to forward the data packet according to the destination address and the local routing table entry included in the data packet.
  • S280 The local routing node locally routes and forwards the data packet sent by the first node to the second node.
  • the local routing node parses out that the destination address in the data packet is the destination address of the second node. Since the local routing node has established a local route between the first node and the second node, the local routing node looks up the local routing table After the entry, the data packet sent by the first node to the second node is locally routed and forwarded according to the instruction of the entry, and sent to the second node without passing through the upper node of the local routing node.
  • the data packet sent by the second node to the first node is similar, and the local routing node is used for local routing and forwarding without passing through the upper node of the local routing node, which can reduce the time delay of the data packet.
  • the method 200 shown in FIG. 2 may be used in the case of establishing a local route for the first node for the first time, where the fifth message may be a local route establishment request message.
  • the method 200 shown in FIG. 2 may also be used to modify the local route of the first node, and the fifth message may be a local route update request message or a local route modification request message.
  • the first establishment of a local route and the modification and update of the local route may also be carried in the same message, which is not limited in this application.
  • Fig. 5 is another schematic flowchart of the communication method provided by the present application.
  • S510 The AF network element sends a third message to the core network element, where the third message is used to delete the local route of the first node.
  • the core network element After receiving the third message, the core network element confirms that the AF network element requests to delete the local route of the first node.
  • the third message includes the identity of the first node.
  • the core network element can confirm through the third message that the AF network element requests to delete all local routes of the first node.
  • the third message includes the identification of the first node and the group identification of the local routing node group A to which the first node belongs.
  • the core network element can confirm the AF network element's request to delete the first node in the node group A through the third message. That is, the third message is used to request to delete the local route between the first node and other nodes in the node group A.
  • the third message further includes the identification of the node in the node group A.
  • the third message includes the identification of the first node and the identification of one or more second nodes.
  • the core network element may confirm the AF network element's request to delete the local route between the first node and the one or more second nodes through the third message.
  • the third message may be a local route deletion request message.
  • S520 The core network element sends a fourth message to the IAB host node, where the fourth message is used to instruct to delete the local route of the first node.
  • the IAB host node sends a sixth message to the local routing node, where the sixth message is used to instruct to delete the local routing of the first node.
  • the IAB host node After receiving the fourth message, the IAB host node determines that the local route of the first node needs to be deleted.
  • the fourth message includes the identification of the first node, the IAB host node confirms according to the fourth message that all local routes of the first node need to be deleted, and the IAB host node confirms that the local route is provided for the first node
  • the serving local routing node sends a sixth message to the local routing node, instructing to delete the local routing of the first node.
  • the fourth message includes the identification of the first node and the identification of the node group A to which the first node belongs.
  • the IAB host node confirms according to the fourth message that the first node needs to be deleted from the node group A, that is, the local route between the first node and other nodes in the node group A is deleted.
  • the IAB host node confirms the local routing node of the node group A, and sends a sixth message to the local routing node, instructing to delete the local routing of the first node.
  • the fourth message further includes the identification of the node in the node group A.
  • the IAB host node selects a local routing node for the node group A after the first node is deleted, and when the local routing node of the node group A changes, the IAB host node sends the establishment of the node group A to the new local routing node Indication message for local routing.
  • the fourth message includes the identification of the first node and the identification of one or more second nodes.
  • the IAB host node confirms according to the fourth message that the local route between the first node and the one or more second nodes needs to be deleted, and the IAB host node confirms that the local routing node that provides the local routing service for the first node sends the local route to the local route.
  • the routing node sends a sixth message instructing to delete the local routing of the first node.
  • the local routing node can delete the local routing table entry of the first node, or delete the local routing rule of the first node. After receiving the sixth message, the local routing node can also turn off the routing learning capability for the first node and turn off the data exchange capability.
  • Fig. 6 is a schematic block diagram of a communication device provided by an embodiment of the present application.
  • the communication device 1500 may include a processing unit 1510 and a transceiving unit 1520.
  • the communication device 1500 may correspond to the IAB host node in the above method embodiment, for example, it may be an IAB host node or a chip configured in a terminal device.
  • the communication device 1500 may correspond to the IAB host node in the methods 200 and 500 according to the embodiments of the present application, and the communication device 1500 may include the IAB host node for executing the methods 200 and 500 in FIG. 2 and FIG. The unit of the method of execution.
  • the units in the communication device 1500 and the other operations and/or functions described above are used to implement the corresponding processes of the methods 200 and 500 in FIG. 2 and FIG. 5, respectively.
  • the transceiver unit 1520 can be used to execute S220 and S240 in the method 200, and the processing unit 1510 can be used to execute S230 in the method 200.
  • the transceiving unit 1520 can be used to execute S520 and S530 in the method 500.
  • the transceiver unit 1520 in the communication device 1500 may correspond to the transceiver 1620 in the communication device 1600 shown in FIG. 7, and the processing unit 1510 in the communication device 1500 It may correspond to the processor 1610 in the communication device 1600 shown in FIG. 7.
  • the transceiver unit 1520 in the communication device 1500 may be implemented through a communication interface (such as a transceiver or an input/output interface), for example, may correspond to the communication shown in FIG. 7
  • the transceiver 1620 in the device 1600, the processing unit 1510 in the communication device 1500 may be implemented by at least one processor, for example, may correspond to the processor 1610 in the communication device 1600 shown in FIG.
  • the processing unit 1510 may also be implemented by at least one logic circuit.
  • the communication device 1500 may further include a processing unit 1510, and the processing unit 1510 may be used to process instructions or data to implement corresponding operations.
  • the communication device 1500 may further include a storage unit, the storage unit may be used to store instructions or data, and the processing unit may call the instructions or data stored in the storage unit to implement corresponding operations.
  • the storage unit may correspond to the memory 1630 in the communication device 1600 shown in FIG. 7, and the storage unit in the communication device 1500 may be implemented by at least one memory.
  • the communication device 1500 may correspond to the core network element in the above method embodiment, for example, it may be a core network element or a chip configured in the core network element.
  • the communication device 1500 may correspond to the core network elements in the methods 200 and 500 according to the embodiments of the present application, and the communication device 1500 may include the core network elements used to execute the methods 200 and 500 in FIG. 2 and FIG. The unit of the method performed by the network element.
  • the units in the communication device 1500 and the other operations and/or functions described above are used to implement the corresponding processes of the methods 200 and 500 in FIG. 2 and FIG. 5, respectively.
  • the transceiver unit 1520 may be used to execute S210 and S220 in the method 200.
  • the transceiver unit 1520 can be used to execute S510 and S520 in the method 500. It should be understood that the specific process for each unit to execute the foregoing corresponding steps has been described in detail in the foregoing method embodiment, and is not repeated here for brevity.
  • the transceiver unit 1520 in the communication device 1500 may correspond to the transceiver 1620 in the communication device 1600 shown in FIG. 7, and the processing unit in the communication device 1500 1510 may correspond to the processor 1610 in the communication device 1600 shown in FIG. 7.
  • the transceiver unit 1520 in the communication device 1500 may be implemented through a communication interface (such as a transceiver or an input/output interface), for example, it may correspond to the one shown in FIG. 7
  • the transceiver 1620 in the communication device 1600, the processing unit 1510 in the communication device 1500 may be implemented by at least one processor, for example, may correspond to the processor 1610 in the communication device 1600 shown in FIG.
  • the processing unit 1510 can also be implemented by at least one logic circuit.
  • the communication device 1500 may further include a processing unit 1510, and the processing unit 1510 may be used to process instructions or data to implement corresponding operations.
  • the communication device 1500 may further include a storage unit, the storage unit may be used to store instructions or data, and the processing unit may call the instructions or data stored in the storage unit to implement corresponding operations.
  • the storage unit may correspond to the memory 1630 in the communication device 1600 shown in FIG. 7, and the storage unit in the communication device 1500 may be implemented by at least one memory.
  • the communication device 1500 may correspond to the local routing node in the above method embodiment, for example, it may be a local routing node, or a chip configured in the local routing node.
  • the communication device 1500 may correspond to the local routing node in the methods 200 and 500 according to the embodiments of the present application, and the communication device 1500 may include the local routing node for executing the methods 200 and 500 in FIG. 2 and FIG. 5 The unit of the method of execution.
  • the units in the communication device 1500 and the other operations and/or functions described above are used to implement the corresponding processes of the methods 200 and 500 in FIG. 2 and FIG. 5, respectively.
  • the transceiver unit 1520 can be used to execute S240, S260, and S280 in the method 200, and the processing unit 1510 can be used to execute S250 and S270 in the method 200.
  • the transceiving unit 1520 can be used to execute S530 in the method 500, and the processing unit 1510 can be used to execute S540 in the method 500.
  • the transceiver unit 1520 in the communication device 1500 may correspond to the transceiver 1620 in the communication device 1600 shown in FIG. 7, and the processing unit 1510 in the communication device 1500 It may correspond to the processor 1610 in the communication device 1600 shown in FIG. 7.
  • the transceiver unit 1520 in the communication device 1500 can be implemented through a communication interface (such as a transceiver or an input/output interface), for example, it can correspond to the communication shown in FIG. 7
  • the transceiver 1620 in the device 1600, the processing unit 1510 in the communication device 1500 may be implemented by at least one processor, for example, may correspond to the processor 1610 in the communication device 1600 shown in FIG.
  • the processing unit 1510 may also be implemented by at least one logic circuit.
  • the communication device 1500 may further include a processing unit 1510, and the processing unit 1510 may be used to process instructions or data to implement corresponding operations.
  • the communication device 1500 may further include a storage unit, the storage unit may be used to store instructions or data, and the processing unit may call the instructions or data stored in the storage unit to implement corresponding operations.
  • the storage unit may correspond to the memory 1630 in the communication device 1600 shown in FIG. 7, and the storage unit in the communication device 1500 may be implemented by at least one memory.
  • the communication device 1500 may correspond to the first node in the above method embodiment, for example, it may be the first node or a chip configured in the first node.
  • the communication device 1500 may correspond to the first node in the method 200 according to the embodiment of the present application, and the communication device 1500 may include a unit for executing the method executed by the first node in the method 200 in FIG. 2.
  • the units in the communication device 1500 and the other operations and/or functions described above are respectively intended to implement the corresponding process of the method 200 in FIG. 2.
  • the transceiver unit 1520 may be used to execute S260 in the method 200. It should be understood that the specific process for each unit to execute the foregoing corresponding steps has been described in detail in the foregoing method embodiment, and is not repeated here for brevity.
  • the transceiver unit 1520 in the communication device 1500 may correspond to the transceiver 1620 in the communication device 1600 shown in FIG. 7, and the processing unit 1510 in the communication device 1500 It may correspond to the processor 1610 in the communication device 1600 shown in FIG. 7.
  • the transceiver unit 1520 in the communication device 1500 can be implemented through a communication interface (such as a transceiver or an input/output interface), for example, it can correspond to the communication shown in FIG. 7
  • the transceiver 1620 in the device 1600, the processing unit 1510 in the communication device 1500 may be implemented by at least one processor, for example, may correspond to the processor 1610 in the communication device 1600 shown in FIG.
  • the processing unit 1510 may also be implemented by at least one logic circuit.
  • the communication device 1500 may further include a processing unit 1510, and the processing unit 1510 may be used to process instructions or data to implement corresponding operations.
  • the communication device 1500 may further include a storage unit, the storage unit may be used to store instructions or data, and the processing unit may call the instructions or data stored in the storage unit to implement corresponding operations.
  • the storage unit may correspond to the memory 1630 in the communication device 1600 shown in FIG. 7, and the storage unit in the communication device 1500 may be implemented by at least one memory.
  • the processor 1610 in FIG. 7 and the memory 1630 may be combined into a processing device, and the processor 1610 is configured to execute the program code stored in the memory 1630 to implement the above-mentioned functions.
  • the memory 1630 may also be integrated in the processor 1610 or independent of the processor 1610.
  • the processor 1610 may correspond to the processing unit in FIG. 6.
  • the transceiver 1620 in FIG. 7 may correspond to the transceiver unit in FIG. 6.
  • the transceiver 2020 may include a receiver (or receiver, receiving circuit) and a transmitter (or transmitter, transmitting circuit). Among them, the receiver is used to receive signals, and the transmitter is used to transmit signals.
  • An embodiment of the present application also provides a processing device, including a processor and an interface; the processor is configured to execute the method in any of the foregoing method embodiments.
  • the aforementioned processing device may be one or more chips.
  • the processing device may be a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), a system on chip (SoC), or It is a central processor unit (CPU), a network processor (NP), a digital signal processing circuit (digital signal processor, DSP), or a microcontroller (microcontroller unit). , MCU), it can also be a programmable logic device (PLD) or other integrated chips.
  • FPGA field programmable gate array
  • ASIC application specific integrated circuit
  • SoC system on chip
  • CPU central processor unit
  • NP network processor
  • DSP digital signal processing circuit
  • microcontroller unit microcontroller unit
  • MCU programmable logic device
  • PLD programmable logic device
  • each step of the above method can be completed by an integrated logic circuit of hardware in the processor or instructions in the form of software.
  • the steps of the method disclosed in combination with the embodiments of the present application may be directly embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor.
  • the software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware. To avoid repetition, it will not be described in detail here.
  • the processor in the embodiment of the present application may be an integrated circuit chip with signal processing capability.
  • the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
  • the above-mentioned processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components .
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electrically available Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be random access memory (RAM), which is used as an external cache.
  • RAM random access memory
  • static random access memory static random access memory
  • dynamic RAM dynamic RAM
  • DRAM dynamic random access memory
  • synchronous dynamic random access memory synchronous DRAM, SDRAM
  • double data rate synchronous dynamic random access memory double data rate SDRAM, DDR SDRAM
  • enhanced synchronous dynamic random access memory enhanced SDRAM, ESDRAM
  • synchronous connection dynamic random access memory serial DRAM, SLDRAM
  • direct rambus RAM direct rambus RAM
  • the present application also provides a computer program product, the computer program product includes: computer program code, when the computer program code runs on a computer, the computer executes the steps shown in FIG. 2 and FIG. 5 Show the method in the embodiment.
  • the present application also provides a computer-readable medium storing program code, which when the program code runs on a computer, causes the computer to execute the steps shown in Figs. 2 and 5 Show the method in the embodiment.
  • the present application also provides a system, which includes the aforementioned one or more terminal devices and one or more network devices.
  • the network equipment in each of the above-mentioned device embodiments corresponds completely to the network equipment or terminal equipment in the terminal equipment and method embodiments, and the corresponding modules or units execute the corresponding steps.
  • the communication unit executes the receiving or the terminal equipment in the method embodiments.
  • the processing unit executes the functions of specific units, refer to the corresponding method embodiments. Among them, there may be one or more processors.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instructions may be transmitted from a website, computer, server, or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (for example, a solid state disk (solid state disc, SSD)) etc.
  • the network equipment in each of the above-mentioned device embodiments corresponds completely to the network equipment or terminal equipment in the terminal equipment and method embodiments, and the corresponding modules or units execute the corresponding steps.
  • the communication unit executes the receiving or the terminal equipment in the method embodiments.
  • the processing unit executes the functions of specific units, refer to the corresponding method embodiments. Among them, there may be one or more processors.
  • component used in this specification are used to denote computer-related entities, hardware, firmware, a combination of hardware and software, software, or software in execution.
  • the component may be, but is not limited to, a process, a processor, an object, an executable file, an execution thread, a program, and/or a computer running on a processor.
  • the application running on the computing device and the computing device can be components.
  • One or more components may reside in processes and/or threads of execution, and components may be located on one computer and/or distributed among two or more computers.
  • these components can be executed from various computer readable media having various data structures stored thereon.
  • the component can be based on, for example, a signal having one or more data packets (e.g. data from two components interacting with another component in a local system, a distributed system, and/or a network, such as the Internet that interacts with other systems through a signal) Communicate through local and/or remote processes.
  • a signal having one or more data packets (e.g. data from two components interacting with another component in a local system, a distributed system, and/or a network, such as the Internet that interacts with other systems through a signal) Communicate through local and/or remote processes.
  • the disclosed system, device, and method can be implemented in other ways.
  • the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • each functional unit may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software When implemented by software, it can be implemented in the form of a computer program product in whole or in part.
  • the computer program product includes one or more computer instructions (programs).
  • programs When the computer program instructions (programs) are loaded and executed on the computer, the processes or functions described in the embodiments of the present application are generated in whole or in part.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instructions may be transmitted from a website, computer, server, or data center. Transmission to another website, computer, server or data center via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.).
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of the present application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code .

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Abstract

一种通信方法，包括：接入回传一体化IAB宿主节点接收来自核心网网元的第一消息，第一消息用于指示建立第一节点与第二节点之间的本地路由，其中第一节点为IAB节点；IAB宿主节点根据第一消息确定本地路由节点，其中，第一节点与第二节点之间的数据包通过本地路由节点进行本地转发。该方法能够减少数据迂回，进而减小通信时延。

Description

通信方法和通信装置 技术领域
本申请涉及通信领域，并且更具体地，涉及一种通信方法和通信装置。
背景技术
在无线回传网络中，例如接入回传一体化(integrated access and backhaul，IAB)网络主要由无线回传节点(又可以称为IAB节点(IAB node)或中继节点(relay node，RN))和无线回传节点的宿主节点组成。IAB网络能够支持多跳回传，无线回传节点之间可以通过生成树或者有向无环图的方式进行级联。无线回传节点为终端设备提供无线接入服务和无线回传服务，终端设备的数据可以由无线回传节点通过无线回传链路传输到宿主(donor)节点传输，再由宿主节点通过核心网传输到数据网络中。这使得终端设备的数据需要经过多跳无线回传节点、宿主节点以及核心网才能到达数据网络，这样的传输方式难以满足终端设备的低时延业务需求。
发明内容
本申请提供一种通信方法和通信装置，能够减少数据迂回，进而减小通信时延。
第一方面，提供了一种通信方法，该方法可以由IAB宿主节点或配置于IAB宿主节点的模块(如芯片)执行，以下以该方法由IAB宿主节点执行为例进行说明。
该方法包括：接入回传一体化IAB宿主节点接收来自核心网网元的第一消息，该第一消息用于指示建立第一节点与第二节点之间的本地路由，其中该第一节点为IAB节点；该IAB宿主节点根据该第一消息确定本地路由节点，其中，该本地路由为该第一节点与该第二节点之间的数据包通过本地路由节点进行本地转发。
根据上述方案，IAB宿主节点接收到核心网设备发送的第一消息后确定建立第一节点与第二节点之间的本地路由，选择为第一节点和第二节点提供本地路由服务的本地路由节点，能够实现第一节点与第二节点之间的数据包通过本地路由节点进行本地转发，而无需经过本地路由节点的上层节点，能够减少数据迂回，进而减小通信时延。
结合第一方面，在第一方面的某些实施方式中，该第一消息包括以下一项或多项：该第一节点的标识、该第二节点的标识或该第二节点所属的节点组的组标识。
根据上述方案，IAB宿主节点通过第一消息中的标识能够确定需要建立本地路由的节点。
结合第一方面，在第一方面的某些实施方式中，该第一节点是采用第三代合作伙伴计划3GPP接入技术接入网络的节点，且该第一节点为通过非3GPP接入技术接入网络的设备提供中继服务。
根据上述方案，第一节点采用3GPP接入技术接入3GPP网络，并且第一节点能够为通过非3GPP接入技术与第一节点建立连接的设备提供中继服务，使得通过非3GPP接入 技术与第一节点建立连接的设备能够通过第一节点与第二节点之间的本地路由进行数据传递，实现了非3GPP技术接入网络的设备能够与3GPP网络中的节点建立本地路由，能够减少数据迂回，避免传输带宽浪费，以及降低传输错误概率，减小通信时延。
结合第一方面，在第一方面的某些实施方式中，该IAB宿主节点根据该第一消息确定本地路由节点，包括：该IAB宿主节点根据该第一消息和该IAB宿主节点的下层节点之间的拓扑关系确定该本地路由节点，其中，该本地路由节点为该第一节点和该第二节点的公共上层节点。
根据上述方案，该IAB宿主节点根据第一消息和该IAB宿主节点的下层节点之间的拓扑关系，确定第一节点和第二节点的一个公共上层节点作为提供本地路由服务的本地路由节点，以实现第一节点和第二节点之间的数据包通过本地路由节点进行本地转发，能够减少数据迂回，避免传输带宽浪费，以及降低传输错误概率，减小通信时延。。
结合第一方面，在第一方面的某些实施方式中，该本地路由节点为该第二节点和该第一节点的最小公共上层节点。
根据上述方案，第一节点与第二节点之间的最小公共上层节点作为本地路由，能够实现数据传递路径最短，最大限度的减少数据迂回，避免传输带宽浪费，以及降低传输错误概率，减小通信时延。
结合第一方面，在第一方面的某些实施方式中，该本地路由节点为IAB节点或该IAB宿主节点。
根据上述方案，IAB节点或IAB宿主节点可以作为为第一节点和第二节点提供本地路由服务的本地路由节点，能够减少数据迂回，避免传输带宽浪费，以及降低传输错误概率，减小通信时延。
结合第一方面，在第一方面的某些实施方式中，该本地路由节点为IAB节点，该方法还包括：该IAB宿主节点向该本地路由节点发送第二消息，该第二消息用于指示建立该第一节点与该第二节点之间的本地路由。
根据上述方案，IAB宿主节点通过第二消息通知本地路由节点建立第一节点与第二节点之间的本地路由，以实现第一节点和第二节点之间的数据包通过本地路由节点进行本地转发，能够减少数据迂回，避免传输带宽浪费，以及降低传输错误概率，减小通信时延。。
结合第一方面，在第一方面的某些实施方式中，该第二消息包括以下一项或多项：该第一节点的标识、该第二节点的标识或该第二节点所属的节点组的组标识。
根据上述方案，本地路由节点通过第二消息中的标识能够确定需要建立本地路由的节点。
结合第一方面，在第一方面的某些实施方式中，该本地路由节点为该IAB宿主节点，该方法还包括：该IAB宿主节点启动针对该第一节点的路由学习，和/或，该IAB宿主节点生成该第一节点与该第二节点之间的路由转发表。
可选地，该IAB宿主节点启动针对该第一节点的路由学习，可以是该IAB宿主节点学习第一节点的MAC地址或IP地址，或者，该IAB宿主节点学习通过非3GPP接入技术接入第一节点的终端设备的MAC地址或IP地址，
根据上述方案，为第一节点和第二节点提供本地路由服务的节点为IAB宿主节点本身的情况下，IAB宿主节点启动针对该第一节点的路由学习，以实现第一节点和第二节点之 间的数据包通过本地路由节点进行本地转发，能够减少数据迂回，避免传输带宽浪费，以及降低传输错误概率，减小通信时延。。
结合第一方面，在第一方面的某些实施方式中，该第二节点包括终端设备和/或IAB节点。
根据上述方案，能够实现在IAB节点之间以及在IAB节点与终端设备之间建立本地路由，能够减少数据迂回，避免传输带宽浪费，以及降低传输错误概率，减小通信时延。。
结合第一方面，在第一方面的某些实施方式中，该方法还包括：该IAB宿主节点接收该核心网网元发送的第三消息，该第三消息用于指示删除该第一节点与该第二节点之间的本地路由；该IAB宿主节点向该本地路由节点发送第四消息，该第四消息用于指示该本地路由节点删除该第一节点与该第二节点之间的本地路由。
根据上述方案，可以通过第三消息删除节点之间的本地路由关系，恢复现有技术中的通信，能够根据网络情况或通信情况灵活切换通信方式。
第二方面，提供了一种通信方法，该方法可以由核心网网元或配置于核心网网元的模块(如芯片)执行，以下以该方法由核心网网元执行为例进行说明。
该方法包括：核心网网元接收应用功能AF网元发送的第五消息，该第五消息用于请求建立第一节点与第二节点之间的本地路由，其中，该第一节点为接入回传一体化IAB节点，该本地路由为该第一节点与该第二节点之间的数据包通过本地路由节点进行本地转发；该核心网网元向IAB宿主节点发送第一消息，该第一消息用于指示建立该第一节点与该第二节点之间的本地路由。
结合第二方面，在第二方面的某些实现方式中，该第一消息和/或第五消息包括以下一项或多项：该第一节点的标识、该第二节点的标识或该第二节点所属的节点组的组标识。
结合第二方面，在第二方面的某些实现方式中，该本地路由节点为IAB节点或该IAB宿主节点。
结合第二方面，在第二方面的某些实现方式中，该第二节点包括终端设备和/或IAB节点。
结合第二方面，在第二方面的某些实现方式中，该第一节点是采用3GPP接入技术接入网络的节点，且该第一节点为通过非3GPP接入技术接入网络的设备提供中继服务。
结合第二方面，在第二方面的某些实现方式中，该方法还包括：该核心网网元生成该第一节点与该第二节点之间的关联信息，或者，该核心网网元生成该第一节点与该第二节点所属的节点组的关联信息。
根据上述方案，通过核心网网元生成关联信息，能够有助于实现第一节点与第二节点之间建立本地路由，从而降低通信的时延。
结合第二方面，在第二方面的某些实现方式中，该方法还包括：该核心网网元接收该AF网元发送的第六消息，该第六消息用于请求删除该第一节点与该第二节点之间的本地路由；该核心网网元向该IAB宿主节点发送第七消息，该第七消息用于指示删除该第一节点与该第二节点之间的本地路由。
第三方面，提供了一种通信方法，该方法可以由本地路由节点或配置于本地路由节点的模块(如芯片)执行，以下以该方法由本地路由节点执行为例进行说明。
该方法包括：本地路由节点接收接入回传一体化IAB宿主节点发送的第二消息，该第 二消息用于指示建立第一节点与第二节点之间的本地路由，该第一节点为IAB节点；该本地路由节点根据该第二消息建立该第一节点与该第二节点之间的本地路由，其中，该本地路由为该第一节点与该第二节点之间的数据包通过该本地路由节点进行本地转发。
结合第三方面，在第三方面的某些实现方式中，该第二消息包括以下一项或多项：该第一节点的标识、该第二节点的标识或该第二节点所属的节点组的组标识。
结合第三方面，在第三方面的某些实现方式中，该本地路由节点为IAB节点或该IAB宿主节点。
结合第三方面，在第三方面的某些实现方式中，该第二节点包括终端设备和/或IAB节点。
结合第三方面，在第三方面的某些实现方式中，该第一节点是采用3GPP接入技术接入网络的节点，且该第一节点为通过非3GPP接入技术接入网络的设备提供中继服务。
结合第三方面，在第三方面的某些实现方式中，该方法还包括：该本地路由节点启动针对该第一节点的路由学习，和/或，该本地路由节点生成该第一节点与该第二节点之间的路由转发表。
结合第三方面，在第三方面的某些实现方式中，该方法还包括：该本地路由节点接收该第一节点发送的第一格式的数据包，该第一格式与3GPP接入技术对应，该第一格式的数据包中包括第三节点向该第二节点发送的数据，该第三节点为采用非3GPP接入技术与该第一节点建立无线连接的节点；该本地路由节点将该第一格式的数据包本地转发至该第二节点。
根据上述方案，通过本地路由节点对第一节点的数据包本地转发，而不经过本地路由节点的上层节点，能够减少数据迂回，避免传输带宽浪费，以及降低传输错误概率，减小通信时延。
结合第三方面，在第三方面的某些实现方式中，该第一格式具体与该第一节点的用户面配置相对应。
第四方面，提供了一种通信方法，该方法可以由第一节点或配置于第一节点的模块(如芯片)执行，以下以该方法由本地路由节点执行为例进行说明。
该方法包括：第一节点接收第三节点发送的第二格式的数据包，该第二格式的数据包中包括第一数据，该第一数据为该第三节点向第二节点发送的数据，其中该第一节点为接入回传一体化IAB节点，该第一节点与该第二节点已经建立本地路由，该本地路由为该第一节点与该第二节点之间的数据包通过本地路由节点进行本地转发；
该第一节点向本地路由节点发送第一格式的数据包，该第一格式的数据包中包括该第一数据。
结合第四方面，在第四方面的某些实现方式中，该方法还包括：
该第一节点对该第二格式的数据包进行格式转换，得到该第一格式的数据包。
结合第四方面，在第四方面的某些实现方式中，该第一节点和/或该第二节点为采用3GPP接入技术接入网络的节点，该第一格式与该3GPP接入技术对应
结合第四方面，在第四方面的某些实现方式中，该第一格式具体与该第一节点的用户面配置相对应。
结合第四方面，在第四方面的某些实现方式中，该第三节点为采用非3GPP接入技术 与该第一节点建立无线连接的节点，该第二格式与该非3GPP接入技术对应。
结合第四方面，在第四方面的某些实现方式中，该本地路由节点为IAB节点或该IAB宿主节点。
结合第四方面，在第四方面的某些实现方式中，该第二节点包括终端设备和/或IAB节点。
第五方面，提供了一种通信装置，包括：收发单元，用于接收来自核心网网元的第一消息，该第一消息用于指示建立第一节点与第二节点之间的本地路由，其中该第一节点为接入回传一体化IAB节点；处理单元，用于根据该第一消息确定本地路由节点，其中，该本地路由为该第一节点与该第二节点之间的数据包通过该本地路由节点进行本地转发。
结合第五方面，在第五方面的某些实现方式中，该第一消息包括以下一项或多项：该第一节点的标识、该第二节点的标识或该第二节点所属的节点组的组标识。
结合第五方面，在第五方面的某些实现方式中，该第一节点是采用3GPP接入技术接入网络的节点，且该第一节点为通过非3GPP接入技术接入网络的设备提供中继服务。
结合第五方面，在第五方面的某些实现方式中，该处理单元具体用于根据该第一消息和IAB宿主节点的下层节点之间的拓扑关系确定该本地路由节点，其中，该本地路由节点为该第一节点和该第二节点的公共上层节点。
结合第五方面，在第五方面的某些实现方式中，该本地路由节点为该第二节点和该第一节点的最小公共上层节点。
结合第五方面，在第五方面的某些实现方式中，该本地路由节点为IAB节点或IAB宿主节点。
结合第五方面，在第五方面的某些实现方式中，该本地路由节点为IAB节点，以及，该收发单元还用于向该本地路由节点发送第二消息，该第二消息用于指示建立该第一节点与该第二节点之间的本地路由。
结合第五方面，在第五方面的某些实现方式中，该第二消息包括以下一项或多项：该第一节点的标识、该第二节点的标识或该第二节点所属的节点组的组标识。
结合第五方面，在第五方面的某些实现方式中，该本地路由节点为IAB宿主节点，以及，该处理单元还用于启动针对该第一节点的路由学习，和/或，该处理单元还用于生成该第一节点与该第二节点之间的路由转发表。
结合第五方面，在第五方面的某些实现方式中，该第二节点包括终端设备和/或IAB节点。
结合第五方面，在第五方面的某些实现方式中，该收发单元还用于接收该核心网网元发送的第三消息，该第三消息用于指示删除该第一节点与该第二节点之间的本地路由；该收发单元还用于向该本地路由节点发送第四消息，该第四消息用于指示该本地路由节点删除该第一节点与该第二节点之间的本地路由。
第六方面，提供了一种通信装置，包括处理器。该处理器与存储器耦合，可用于执行存储器中的指令，以实现上述第一方面以及第一方面中任一种可能实现方式中的方法。可选地，该通信装置还包括存储器。可选地，该通信装置还包括通信接口，处理器与通信接口耦合。
在一种实现方式中，该通信装置为IAB宿主节点。当该通信装置为IAB宿主节点时， 该通信接口可以是收发器，或，输入/输出接口。
在另一种实现方式中，该通信装置为配置于IAB宿主节点中的芯片。当该通信装置为配置于IAB宿主节点中的芯片时，该通信接口可以是输入/输出接口。
可选地，该收发器可以为收发电路。可选地，该输入/输出接口可以为输入/输出电路。
第七方面，提供了一种通信装置，包括：收发单元，用于接收应用功能AF网元发送的第五消息，该第五消息用于请求建立第一节点与第二节点之间的本地路由，其中，该第一节点为接入回传一体化IAB节点，该本地路由为该第一节点与该第二节点之间的数据包通过本地路由节点进行本地转发；处理单元，用于根据第五消息确定建立第一节点与第二节点之间的本地路由；该收发单元还用于向IAB宿主节点发送第一消息，该第一消息用于指示建立该第一节点与该第二节点之间的本地路由。
结合第七方面，在第七方面的某些实现方式中，该第一消息和/或第五消息包括以下一项或多项：该第一节点的标识、该第二节点的标识或该第二节点所属的节点组的组标识。
结合第七方面，在第七方面的某些实现方式中，该本地路由节点为IAB节点或该IAB宿主节点。
结合第七方面，在第七方面的某些实现方式中，该第二节点包括终端设备和/或IAB节点。
结合第七方面，在第七方面的某些实现方式中，该第一节点是采用3GPP接入技术接入网络的节点，且该第一节点为通过非3GPP接入技术接入网络的设备提供中继服务。
结合第七方面，在第七方面的某些实现方式中，该处理单元还用于生成该第一节点与该第二节点之间的关联信息，或者，该处理单元还用于生成该第一节点与该第二节点所属的节点组的关联信息。
结合第七方面，在第七方面的某些实现方式中，该收发单元还用于接收该AF网元发送的第六消息，该第六消息用于请求删除该第一节点与该第二节点之间的本地路由；该收发单元还用于向该IAB宿主节点发送第七消息，该第七消息用于指示删除该第一节点与该第二节点之间的本地路由。
第八方面，提供了一种通信装置，包括处理器。该处理器与存储器耦合，可用于执行存储器中的指令，以实现上述第二方面以及第二方面中任一种可能实现方式中的方法。可选地，该通信装置还包括存储器。可选地，该通信装置还包括通信接口，处理器与通信接口耦合。
在一种实现方式中，该通信装置为核心网网元。当该通信装置为核心网网元时，该通信接口可以是收发器，或，输入/输出接口。
在另一种实现方式中，该通信装置为配置于核心网网元中的芯片。当该通信装置为配置于核心网网元中的芯片时，该通信接口可以是输入/输出接口。
可选地，该收发器可以为收发电路。可选地，该输入/输出接口可以为输入/输出电路。
第九方面，提供了一种通信装置，包括：收发单元，用于接收接入回传一体化IAB宿主节点发送的第二消息，该第二消息用于指示建立第一节点与第二节点之间的本地路由，该第一节点为IAB节点；处理单元，用于根据该第二消息建立该第一节点与该第二节点之间的本地路由，其中，该本地路由为该第一节点与该第二节点之间的数据包通过该通信装置进行本地转发。
结合第九方面，在第九方面的某些实现方式中，该第二消息包括以下一项或多项：
该第一节点的标识、该第二节点的标识或该第二节点所属的节点组的组标识。
结合第九方面，在第九方面的某些实现方式中，该通信装置配置于IAB节点或该通信装置为IAB节点，或者，该通信装置配置于该IAB宿主节点或该通信装置为该IAB宿主节点。
结合第九方面，在第九方面的某些实现方式中，该第二节点包括终端设备和/或IAB节点。
结合第九方面，在第九方面的某些实现方式中，该第一节点是采用3GPP接入技术接入网络的节点，且该第一节点为通过非3GPP接入技术接入网络的设备提供中继服务。
结合第九方面，在第九方面的某些实现方式中，该处理单元还用于启动针对该第一节点的路由学习，和/或，该处理单元还用于生成该第一节点与该第二节点之间的路由转发表。
结合第九方面，在第九方面的某些实现方式中，该收发单元还用于接收该第一节点发送的第一格式的数据包，该第一格式与3GPP接入技术对应，该第一格式的数据包中包括第三节点向该第二节点发送的数据，该第三节点为采用非3GPP接入技术与该第一节点建立无线连接的节点；该处理单元还用于将该第一格式的数据包本地转发至该第二节点。
结合第九方面，在第九方面的某些实现方式中，该第一格式具体与该第一节点的用户面配置相对应。
第十方面，提供了一种通信装置，包括处理器。该处理器与存储器耦合，可用于执行存储器中的指令，以实现上述第三方面以及第三方面中任一种可能实现方式中的方法。可选地，该通信装置还包括存储器。可选地，该通信装置还包括通信接口，处理器与通信接口耦合。
在一种实现方式中，该通信装置为本地路由节点。当该通信装置为本地路由节点时，该通信接口可以是收发器，或，输入/输出接口。
在另一种实现方式中，该通信装置为配置于本地路由节点中的芯片。当该通信装置为配置于本地路由节点中的芯片时，该通信接口可以是输入/输出接口。
可选地，该收发器可以为收发电路。可选地，该输入/输出接口可以为输入/输出电路。
第十一方面，提供了一种通信装置，包括：收发单元，用于接收第三节点发送的第二格式的数据包，该第二格式的数据包中包括第一数据，该第一数据为该第三节点向第二节点发送的数据，该通信装置与该第二节点已经建立本地路由，该本地路由为该通信装置与该第二节点之间的数据包通过本地路由节点进行本地转发；处理单元，生成第一格式的数据包，该第一格式的数据包中包括该第一数据；该收发单元还用于向本地路由节点发送该第一格式的数据包。
可选地，该通信装置为IAB节点或该通信装置配置于IAB节点。
结合第十一方面，在第十一方面的某些实现方式中，该处理单元具体用于对该第二格式的数据包进行格式转换，得到该第一格式的数据包。
结合第十一方面，在第十一方面的某些实现方式中，该通信装置和/或该第二节点为采用3GPP接入技术接入网络的节点，该第一格式与该3GPP接入技术对应
结合第十一方面，在第十一方面的某些实现方式中，该第一格式具体与该通信装置的 用户面配置相对应。
结合第十一方面，在第十一方面的某些实现方式中，该第三节点为采用非3GPP接入技术与该通信装置建立无线连接的节点，该第二格式与该非3GPP接入技术对应。
结合第十一方面，在第十一方面的某些实现方式中，该本地路由节点为接入回传一体化IAB节点或该IAB宿主节点。
结合第十一方面，在第十一方面的某些实现方式中，该第二节点包括终端设备和/或IAB节点。
第十二方面，提供了一种通信装置，包括处理器。该处理器与存储器耦合，可用于执行存储器中的指令，以实现上述第四方面以及第四方面中任一种可能实现方式中的方法。可选地，该通信装置还包括存储器。可选地，该通信装置还包括通信接口，处理器与通信接口耦合。
在一种实现方式中，该通信装置为第一节点。当该通信装置为第一节点时，该通信接口可以是收发器，或，输入/输出接口。
在另一种实现方式中，该通信装置为配置于第一节点中的芯片。当该通信装置为配置于第一节点中的芯片时，该通信接口可以是输入/输出接口。
可选地，该收发器可以为收发电路。可选地，该输入/输出接口可以为输入/输出电路。
第十三方面，提供了一种处理器，包括：输入电路、输出电路和处理电路。该处理电路用于通过该输入电路接收信号，并通过该输出电路发射信号，使得该处理器执行第一方面至第四方面以及第一方面至第四方面中任一种可能实现方式中的方法。
在具体实现过程中，上述处理器可以为一个或多个芯片，输入电路可以为输入管脚，输出电路可以为输出管脚，处理电路可以为晶体管、门电路、触发器和各种逻辑电路等。输入电路所接收的输入的信号可以是由例如但不限于接收器接收并输入的，输出电路所输出的信号可以是例如但不限于输出给发射器并由发射器发射的，且输入电路和输出电路可以是同一电路，该电路在不同的时刻分别用作输入电路和输出电路。本申请实施例对处理器及各种电路的具体实现方式不做限定。
第十四方面，提供了一种处理装置，包括处理器和存储器。该处理器用于读取存储器中存储的指令，并可通过接收器接收信号，通过发射器发射信号，以执行第一方面至第四方面以及第一方面至第四方面中任一种可能实现方式中的方法。
可选地，该处理器为一个或多个，该存储器为一个或多个。
可选地，该存储器可以与该处理器集成在一起，或者该存储器与处理器分离设置。
在具体实现过程中，存储器可以为非瞬时性(non-transitory)存储器，例如只读存储器(read only memory，ROM)，其可以与处理器集成在同一块芯片上，也可以分别设置在不同的芯片上，本申请实施例对存储器的类型以及存储器与处理器的设置方式不做限定。
应理解，相关的数据交互过程例如发送指示信息可以为从处理器输出指示信息的过程，接收能力信息可以为处理器接收输入能力信息的过程。具体地，处理器输出的数据可以输出给发射器，处理器接收的输入数据可以来自接收器。其中，发射器和接收器可以统称为收发器。
上述第十四方面中的处理装置可以是一个或多个芯片。该处理装置中的处理器可以通 过硬件来实现也可以通过软件来实现。当通过硬件实现时，该处理器可以是逻辑电路、集成电路等；当通过软件来实现时，该处理器可以是一个通用处理器，通过读取存储器中存储的软件代码来实现，该存储器可以集成在处理器中，可以位于该处理器之外，独立存在。
第十五方面，提供了一种计算机程序产品，该计算机程序产品包括：计算机程序(也可以称为代码，或指令)，当该计算机程序被运行时，使得计算机执行上述第一方面至第四方面以及第一方面至第四方面中任一种可能实现方式中的方法。
第十六方面，提供了一种计算机可读存储介质，该计算机可读存储介质存储有计算机程序(也可以称为代码，或指令)当其在计算机上运行时，使得计算机执行上述第一方面至第四方面以及第一方面至第四方面中任一种可能实现方式中的方法。
第十七方面，提供了一种通信系统，包括前述的IAB宿主节点、核心网网元、本地路由节点和第一节点。
附图说明
图1是适用于本申请实施例提供的通信系统的示意性框图。
图2是本申请提供的通信方法的一示意性流程图。
图3是本申请提供的通信方法的一示意性架构图。
图4是本申请提供的通信方法的另一示意性架构图。
图5是本申请的通信装置的一例的示意性框图。
图6是本申请的通信装置的一例的示意性结构图。
图7是本申请的通信装置的一例的示意性结构图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
应理解，本申请中所有节点、消息的名称仅仅是本申请为描述方便而设定的名称，在实际网络中的名称可能不同，不应理解本申请限定各种节点、消息的名称，相反，任何具有和本申请中用到的节点或消息具有相同或类似功能的名称都视作本申请的方法或等效替换，都在本申请的保护范围之内，以下不再赘述。
本申请将支持一体化的接入和回传的节点称为无线回传节点，该无线回传节点又可以称为中继节点(relay node，RN)或IAB节点(IAB node)。为便于描述，下面以IAB节点为例进行说明。
图1是适用于本申请实施例提供的通信系统的示意性框图。
如图1所示，该通信系统中可以包括应用功能网元101、核心网102、IAB宿主节点(IAB-donor)103、一个或多个IAB节点(IAB-node)，如IAB节点104、IAB节点105，以及还可以包括一个或多个终端设备(user equipment，UE)，如UE106至UE108。IAB宿主节点可以连接到核心网(core network，CN)，可以为终端设备提供接入服务，还可以为IAB节点提供到核心网的回传出口；IAB节点不直接连接到核心网，而是通过(单跳或者多跳)无线回传链路连接到IAB宿主节点，由IAB宿主节点回传至核心网。IAB节点可以为终端设备提供接入服务，还可以为其他IAB节点提供回传链路的中继。
IAB宿主节点又称为IAB宿主(IAB donor)或者宿主基站(donor gNodeB，DgNB)。 具体地，IAB宿主节点可以是一个具有完整基站功能的接入网网元，也可以是集中式单元(centralized unit，CU)和分布式单元(distributed unit，DU)分离形态的接入网网元。IAB宿主节点CU还有可能是控制面(control plane，CP)和用户面(user plane，UP)分离的形态，例如，一个CU由一个CU-CP和多个CU-UP组成，本申请实施例对此不作限定。，IAB节点包括移动终端(mobile termination，MT)和DU两部分。其中，MT部分的功能相当于终端设备，IAB节点通过MT连接上层IAB节点或者IAB宿主节点；DU部分的功能和普通DU相同，IAB节点通过DU连接终端设备或者下层IAB节点。具体地，IAB宿主节点的CU与IAB节点的DU之间包括通信接口(例如，F1接口)，IAB宿主节点的DU或者IAB节点的DU与下层IAB节点的MT之间包括通信接口(例如，Uu接口)。
该通信系统中还可以包括一个IAB节点，该IAB节点采用第三代合作伙伴计划(3 rd generation partnership project，3GPP)接入技术接入网络，且能够为采用非3GPP接入技术接入网络的设备提供中继服务。例如图1所示的IAB节点105，IAB节点105可以具有非3GPP接入技术(例如，WIFI接入技术)的接入点(access point，AP)的功能，UE106可以采用非3GPP接入技术与该IAB节点建立接入链路。在该非3GPP接入技术的接入链路上UE106的数据可以通过IAB节点105转发至3GPP网络。或者，该IAB节点105可以与非3GPP接入技术的接入点(access point，AP)分离设置且建立连接，采用非3GPP接入技术接入网络的设备可以通过该IAB节点105将数据转发至3GPP网络。
本申请实施例中的终端设备也可以称为用户设备(user equipment，UE)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。本申请的实施例中的终端设备可以是手机(mobile phone)、平板电脑(pad)、带无线收发功能的电脑、虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端、蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备，5G网络中的终端设备或者未来演进的公用陆地移动通信网络(public land mobile network，PLMN)中的终端设备等。
其中，可穿戴设备也可以称为穿戴式智能设备，是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称，如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上，或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备，更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能，例如：智能手表或智能眼镜等，以及只专注于某一类应用功能，需要和其它设备如智能手机配合使用，如各类进行体征监测的智能手环、智能首饰等。
此外，终端设备还可以是物联网(internet of things，IoT)系统中的终端设备。IoT是未来信息技术发展的重要组成部分，其主要技术特点是将物品通过通信技术与网络连接， 从而实现人机互连，物物互连的智能化网络。
应理解，本申请对于终端设备的具体形式不作限定。
为描述方便，下面简单说明本申请中涉及到的术语。
上层节点
下行链路中一个节点的上一跳为该节点的父亲节点，也可以成为父节点，该节点之前的多跳节点为该节点的祖先节点，也就是说，上行链路中一个节点的下一跳为该节点的父节点，该节点之后的多跳节点为该节点的祖先节点。在本申请中，一个节点的上层节点包括该节点的父节点和祖先节点。
下层节点
下行链路中一个节点的下一跳为该节点的孩子节点，也可以成为子节点，该节点之后的多跳节点为该节点的子孙节点，也就是说，上行链路中的一个节点的上一跳为该节点的子节点，该节点的之前的多跳节点为该节点的子孙节点。在本申请中，一个节点的下层节点包括该节点的子节点和子孙节点。图2是本申请提供的通信方法的一示意性流程图。其中，图2中各节点、网元之间的网络架构可以如图3所示，应用功能(application function，AF)网元与核心网(core network，CN)网元之间，以及CN网元与IAB宿主节点之间的信息交互可以为有线通信，IAB宿主节点与下层节点之间，以及该IAB宿主节点的下层节点之间可以通过无线回传链路或接入链路进行通信，需要说明的是，图3以IAB节点之间采用生成树的方式进行级联作为示例，IAB节点之间也可以采用有向无环图(directed acyclic graph，DAG)的方式进行级联，但本申请不限于此。
图2所示的方法可以包括S210至S280。下面详细说明该方法中的各个步骤。
S210，AF网元向核心网网元发送第五消息，第五消息用于请求建立第一节点与第二节点之间的本地路由。
该核心网网元接收AF网元发送的第五消息，该第五消息用于请求建立第一节点与第二节点之间的本地路由，其中，第一节点为IAB节点。作为示例非限定，该第二节点可以是终端设备，也可以是IAB节点。
本地路由是指两个节点之间的数据包通过本地路由节点进行本地转发，而无需经过本地路由节点的上层节点。例如，节点A与节点B建立了本地路由，当节点A向本地路由节点发送了一个数据包，当该数据包的目的地址为节点B的地址时，本地路由节点根据路由转发表向节点B转发该数据包，该数据包无需再经过本地路由节点的上层节点转发，能够减小通信时延。另外，节点A和节点B建立了本地路由后，若节点A或节点B还包括下层节点则节点A和节点B以及节点A和节点B的下层节点之间的数据包也可以通过节点A和节点B的本地路由节点进行本地转发，而无需再经过本地路由节点的上层节点转发。
作为示例非限定，该第一节点为采用3GPP接入技术接入网络的节点，且该第一节点为通过非3GPP接入技术接入网络的设备提供中继服务。
例如图3中，第一节点采用3GPP接入技术接入3GPP网络，而第六节点为采用非3GPP接入技术接入网络，例如第六节点采用WIFI技术与第一节点建立无线连接，其中，第一节点可以是具有WIFI接入点的功能的IAB节点，即第六节点可以采用WIFI接入技术接入该第一节点，或者，第六节点可以采用WIFI接入技术接入WIFI接入点，该第一节点 可以与该WIFI接入点建立连接，也就是说，第一节点可以直接或通过该WIFI接入点为第六节点提供3GPP网络的服务。
在本申请中，第二节点为第一节点需要建立本地路由的节点，其中，第五消息用于建立第一节点与第二节点之间的本地路由，在具体实施中可以是第五消息用于建立第一节点与一个第二节点之间的本地路由，也可以第五消息用于建立第一节点与多个第二节点之间的本地路由。
一种实施方式中，该第五消息可以包括该第一节点的标识。
也可以说，该第五消息用于请求建立第一节点与已经在该核心网建立会话的其他节点(即，第二节点的一例)的本地路由。核心网网元接收到该第五消息后认为AF网元请求建立该第一节点与已经在该核心网建立会话的其他节点的本地路由。
例如，在核心网网元中预先配置了已经建立了本地路由的节点组，该节点组中的节点为第二节点，可选地，还包括该节点组包括的一个或多个节点的标识，核心网网元接收到该第五消息后，确认需要将该第一节点加入该节点组中，也就是说建立该第一节点与该节点组中的节点(即，第二节点的另一例)之间的本地路由。
再例如，该核心网网元接收到该第五消息后确认能够与该第一节点建立本地路由的节点，并为该第一节点与能够与该第一节点建立本地路由的节点提供建立本地路由的服务。
作为示例非限定，第一节点的标识可以是通用公共订阅标识符(generic public subscription identifier，GPSI)、国际移动用户识别码(international mobile subscriber identity，IMSI)或国际移动设备识别码(international mobile equipment identity，IMEI)中的一种。
另一种实施方式中，该第五消息可以包括该第一节点的标识和该第二节点所属的节点组的组标识。
例如，由多个第二节点组成的节点组为节点组A，即第一节点需要与该节点组A建立本地路由，该第五消息包括第一节点的标识和节点组A的组标识，该第五消息用于请求建立该第一节点与该节点组A的本地路由。节点组A可以是相互之间已经建立了本地路由的一组节点。也可以说，该第五消息用于指示将第一节点加入节点组A，即表示第五消息用于请求建立包括该第一节点的节点组A的本地路由。或者，第五消息用于请求建立第一节点与节点组中的每一个节点之间的本地路由。
另一种实施方式中，该第五消息可以包括该第一节点的标识和该第二节点的标识。
例如，第二节点为第一节点需要建立本地路由的节点，第五消息包括该第一节点的标识和一个或多个第二节点中每个第二节点的标识。该第五消息可以用于请求建立第一节点与该一个或多个第二节点之间的本地路由，也就是说，该第五消息可以用于请求该第一节点与一个或多个第二节点中的每一个第二节点建立本地路由。或者，该第五消息也可以用于请求第一节点和该一个或多个第二节点中任意两节点之间均建立本地路由。也就是说，第五消息包括多个节点标识，其中包括该第一节点的标识和该第二节点的标识，第五消息可以用于请求建立该多个节点的本地路由。
可选地，核心网网元在接收到该第五消息后，生成该第一节点与该第二节点之间的关联信息，或者，生成该第一节点与该第二节点所属的节点组之间的关联信息。
例如，核心网元接收到该第五消息后，建立第一节点的标识与第二节点的标识的映射关系，生成该映射关系信息，即关联信息，该关联信息用于标识第一节点与第二节点需要 建立本地路由。根据该映射关系信息能够通过第一节点标识查询到与第一节点关联的第二节点，或者通过第二节点的标识能够查询到该第一节点的标识。
再例如，核心网元接收到该第五消息后，建立第一节点的标识与第二节点所属的节点组的组标识的映射关系，生成该映射关系信息，即关联信息，该关联信息用于标识第一节点与第二节点所属的节点组需要建立本地路由。根据该映射关系信息能够通过第一节点标识查询到与第一节点关联的第二节点所属的第二节点组，或者通过第二节点组的组标识能够查询到该第一节点的标识。
作为示例非限定，在第二节点为IAB节点的情况下，可以认为是核心网的控制面和网管面统一的情况，即管控合一的情况。核心网可以获知IAB节点的信息，根据第五消息的请求为第一节点与第二节点建立本地路由提供服务。
S220，CN网元向IAB宿主节点发送第一消息，该第一消息用于指示建立第一节点与第二节点之间的本地路由。
该IAB宿主节点接收CN网元发送的该第一消息，确定需要建立本地路由的节点。
一种实施方式中，第一消息可以包括该第一节点的标识。
该IAB宿主节点接收到包括该第一节点的标识的第一消息后，确认需要建立该第一节点与该IAB宿主节点下的节点(即，第二节点的另一例)的本地路由关系。
例如，该IAB宿主节点下的包括已经建立了本地路由的节点组A，则IAB宿主节点认为需要将该第一节点加入该节点组A。
再例如，该IAB宿主节点接收到该第一消息后，确认该IAB宿主节点中能够与该第一节点建立本地路由的节点，并为该第一节点和能够与该第一节点建立本地路由的节点提供建立本地路由的服务。
另一种实施方式中，第一消息可以包括该第一节点的标识和第二节点所属的节点组的组标识。
例如，第一消息可以用于指示第一节点加入多个第二节点组组成的节点组A，即指示第一节点和节点组A中包括的节点建立本地路由，也就是说，指示第一节点加入节点组A后节点组A建立本地路由。或者，第一消息用于指示建立第一节点与节点组中的每一个节点之间的本地路由。
另一种实施方式中，第一消息可以包括该第一节点的标识和第二节点的标识。
例如，第一消息包括该第一节点的标识和该一个或多个第二节点中每个第二节点的标识。该第一消息可以用于指示建立该第一节点与一个或多个第二节点的本地路由。也就是说，第一消息包括多个节点标识，其中包括该第一节点的标识和该第二节点的标识，第一消息可以用于指示建立该多个节点的本地路由。或者，该第一消息也可以用于指示第一节点和该一个或多个第二节点中任意两节点之间均建立本地路由。
另一种实施方式中，第一消息可以包括核心网设备生成的关联信息。该IAB宿主节点根据该关联信息可以确定需要建立第一节点与第二节点之间的本地路由，或者，该IAB宿主节点根据该关联信息可以确定需要将第一节点加入第二节点所属的节点组中。
S230，该IAB宿主节点确定本地路由节点。
该IAB宿主节点确定需要建立的第一节点和第二节点之间的本地路由后，该IAB宿主节点根据该IAB宿主节点的下层节点之间的拓扑关系，确定为第一节点和第二节点之间 数据通信提供本地路由服务的本地路由节点。具体地，该IAB宿主节点根据该IAB宿主节点的下层节点之间的拓扑关系，确定该第一节点与第二节点的公共上层节点，进而选择用于转发该第一节点和第二节点之间的数据的本地路由节点。
作为示例非限定，该第一节点和该第二节点的本地路由节点为该第一节点和该第二节点的最小公共上层节点。
例如图3中，需要建立第一节点与第二节点之间的本地路由，则AF网元向核心网网元发送第五消息请求建立第一节点与第二节点之间的本地路由，核心网网元接收到第五消息后生成第一消息，并发送给IAB宿主节点，指示IAB宿主节点建立第一节点与第二节点之间的本地路由。IAB宿主节点根据下层节点之间的拓扑关系，确定第一节点与第二节点的公共上层节点包括第三节点和IAB宿主节点本身。IAB宿主节点可以选择第一节点与第二节点的最小公共节点作为该第一节点与该第二节点之间的本地路由节点，使得在建立该第一节点与第二节点之间的本地路由之后，该第一节点和该第二节点之间的数据包以及该第一节点与第二节点的下层节点之间的数据包将通过该第三节点转发，而无需通过第三节点的上层节点。例如，第六节点向第二节点发送的数据包将通过第一节点发送至第三节点，由第三节点进行本地路由，通过第五节点转发给第二节点，以实现本地路由。
再例如图4所示，UE1和UE2已经建立了本地路由，且UE1和UE2之间的本地路由节点为IAB节点3，UE1和UE2组成的本地路由节点组可以称为节点组A，AF网元向核心网网元发送第五消息请求IAB节点4(即，第一节点的一例)加入节点组A，也就是说，UE1和UE2为第二节点，第一节点即IAB节点4需要与两个第二节点，即UE1和UE2建立本地路由。AF网元请求IAB节点4与UE1、UE2建立本地路由。该第五消息包括IAB节点4的标识，可选地，该第五消息还可以包括节点组A的标识，和/或，UE1和UE2的标识。核心网网元生成第一消息，指示IAB宿主节点建立IAB节点4与UE1、UE2的本地路由节点，也可以说，第一消息用于指示IAB宿主节点将IAB节点4加入节点组A，且建立节点组A的本地路由。该IAB宿主节点接收到该第一消息后，根据该IAB宿主节点的下层节点之间的拓扑关系，确定IAB节点4和UE1、UE2的公共上层节点，包括该IAB宿主节点本身和IAB节点1。该IAB宿主节点可以选择该IAB宿主节点和IAB节点1其中之一作为IAB节点4和UE1、UE2的本地路由节点，例如，该IAB宿主节点选择IAB节点1作为本地路由节点。也可以说，该IAB宿主节点选择IAB节点1作为IAB节点4加入节点组A后的节点组A的本地路由节点。IAB节点1作为IAB节点4和UE1、UE2的本地路由节点使得IAB节点4和UE1、UE2之间的数据包以及IAB节点4的下层节点UE3和UE1、UE2之间的数据包能够通过IAB节点1转发，而无需经过IAB节点1的上层节点。其中，UE1、UE2以及IAB节点4可以是采用3GPP接入技术接入网络的节点，UE3可以是采用非3GPP接入技术接入网络的节点。该IAB节点4可以具有非3GPP接入技术的AP的功能，UE3可以采用非3GPP接入技术与该IAB节点建立接入链路。在该非3GPP接入技术的接入链路上UE3的数据可以通过IAB节点4转发至3GPP网络。或者，该IAB节点4可以与非3GPP接入技术的AP分离设置且建立连接，UE3接入该AP后可以通过该IAB节点4将数据转发至3GPP网络。在IAB节点4和UE1、UE2通过本地路由节点IAB节点1建立本地路由后，UE3与UE、UE2之间的通信数据包可以通过IAB节点1进行本地路由转发，而无需经过IAB节点1的上层节点。能够实现采用非3GPP接 入技术的节点与3GPP网络中的节点建立本地路由，达到减小通信时延的目的。
由于在IAB节点4加入节点组A之前的本地路由节点为IAB节点3，在IAB节点4加入节点组A后本地路由节点变更为IAB节点1，节点组A本地路由节点发生了改变，可选地，IAB宿主节点指示IAB节点3删除UE2和UE3的本地路由规则，即删除本地路由规则后UE2和UE3之间的数据不由IAB节点3进行本地转发(即，UE1向UE2发送的数据包由IAB节点3转发至UE2，或UE2向UE1发送的数据包由IAB节点3转发至UE1)，而是由IAB节点3转发至IAB节点1后，由IAB节点1进行本地路由转发。或者，IAB宿主节点不指示IAB节点3删除IAB节点3的本地路由规则，UE1与UE2之间的数据包仍由IAB节点3进行本地路由转发，而UE1、UE2与IAB节点4之间的数据包由IAB节点1进行本地路由转发，但本申请不限于此。
S240，该IAB宿主节点向该IAB宿主节点选择的第一节点和第二节点的本地路由节点发送第二消息，该第二消息用于指示建立第一节点与第二节点的本地路由。
该第二消息用于指示建立第一节点与第二节点的本地路由。可以包括该第二消息用于指示该本地路由节点更新本地路由规则，即第一节点与第二节点之间的数据包由接收到该第二消息的节点进行本地路由转发。还可以包括该第二消息用于指示本地路由节点学习第一节点的路由，或者说，启动本地路由节点针对第一节点的路由能力，例如，学习第一节点的MAC地址或IP地址，或者，学习通过非3GPP接入技术与第一节点建立无线连接的终端设备的MAC地址或IP地址，生成路由表项。
S250，该本地路由节点建立第一节点与第二节点的本地路由。
该本地路由节点接收到该IAB宿主节点发送的第二消息后，确定建立该第一节点与该第二节点的在该本地路由节点的本地路由。该本地路由节点学习该第一节点的MAC地址或IP地址，或者，学习通过非3GPP接入技术接入第一节点的终端设备的MAC地址或IP地址，生成路由表项，使得该第一节点与第二节点之间的数据包能够由该本地路由节点进行本地路由转发，而不需要该本地路由节点的上层节点。
可选地，该IAB宿主节点向第一节点发送指示消息，该指示消息用于指示第一节点学习本地路由节点的路由，或者说，启动第一节点针对本地路由节点的路由能力，例如，学习第一节点的MAC地址或IP地址，或者，学习通过非3GPP接入技术接入第一节点的终端设备的MAC地址或IP地址，生成MAC地址路由表项。以及，该指示消息还可以用于指示启动该第一节点的数据交换能力，该数据交换能力可以是将采用非3GPP接入技术的终端设备的数据包封装成PDCP/SDAP数据包，以及将PDCP/SDAP数据包解封装成非3GPP接入技术的终端设备能够解码的数据包。例如，将采用WIFI接入技术的UE的以太帧封装成PDCP/SDAP数据包，以及将PDCP/SDAP数据包封装成以太帧。
可选地，在该第一节点与该第二节点的本地路由构建成功后，由本地路由节点开始向上层节点返回本地路由节点构建成功的确认消息，使包括IAB宿主节点以及核心网网元在内的上层节点确认该第一节点与该第二节点的本地路由构建成功。
S260，该第一节点向该本地路由节点发送数据包，该数据包的目的地址为第二节点。
该第一节点向该本地路由节点发送的数据包可以是该第一节点向该第二节点发送的数据包，也可以是该第一节点的下层节点向该第二节点发送的数据包，由该第一节点转发或者说由该第一节点提供中继服务。
可选地，该第一节点为第三节点提供中继服务，该第一节点向该本地路由节点发送数据包中包括第三节点向第二节点发送的数据。
作为示例非限定，该第三节点为采用非3GPP接入技术与第一节点建立无线连接，该第一节点为该第三节点提供中继服务。
该第一节点接收到第三节点发送的数据包后向本地路由节点转发，其中，该第三节点向该第一节点发送的数据包为第二格式的数据包，该第二格式的数据包中包括第三节点向第二节点发送的数据。该第二格式与该非3GPP接入技术相对应，例如，该非3GPP接入技术为WIFI接入技术，则该第二格式为以太帧。该第一节点接收到该第二格式的数据包后，确定该数据包需要传递至3GPP网络中，则根据该数据包生成第一格式的数据包，该第一格式与3GPP接入技术相对应，具体地，该第一格式可以与该第一节点的用户面配置相对应。例如，该第一格式的数据包可以是PDCP/SDAP数据包。也就是说，第一节点能够将第三节点发送的第二格式的数据包转换为与第一节点用户面资源相应的第一格式的数据包，使得第三节点的数据能够通过第一节点的用户面资源在3GPP网络中传输。例如，第三节点的数据能够通过第一节点的数据无线承载(data radio bear，DRB)和/或无线链路控制(radio link control，RLC)等用户面资源在3GPP网络中传输。
另外，该第一节点还可以将3GPP网络中的节点向第三节点发送的数据包传递至第三节点，其中包括将第一格式的数据包转换为第二格式的数据包发送给第三节点。
该第一节点发送数据包传递至该本地路由节点后，也就是说，该本地路由节点接收到该第一节点发送的数据包后，本地路由节点执行S270。
S270，该本地路由节点根据该数据包中包括的目的地址和本地路由表项，确定本地路由转发该数据包。
S280，该本地路由节点本地路由转发第一节点发送给第二节点的数据包。
该本地路由节点解析出该数据包中的目的地址为第二节点的目的地址，由于该本地路由节点已经建立了第一节点与第二节点的本地路由，因此，该本地路由节点查找本地路由表项后，根据表项的指示将该第一节点发送给第二节点的数据包进行本地路由转发，发送给该第二节点，而无需经过该本地路由节点的上层节点。
该第二节点发送给该第一节点的数据包类似，通过本地路由节点进行本地路由转发，而无需经过该本地路由节点的上层节点，能够减小数据包的时延。
图2所示的方法200可以用于首次为第一节点建立本地路由的情况，其中，第五消息可以是本地路由建立请求消息。图2所示的方法200也可以用于修改第一节点的本地路由的情况，第五消息可以是本地路由更新请求消息，或者，本地路由修改请求消息。或者，首次建立本地路由和修改、更新本地路由也可以承载同一消息中，本申请对此不作限定。
图5是本申请提供的通信方法的另一示意性流程图。
需要说明的是图5所示的方法与图2所示的方法中相同或相似的部分可以参考上述对图2所示的方法的描述，为了简要，在此不再赘述。
S510，AF网元向核心网网元发送第三消息，该第三消息用于删除第一节点的本地路由。
核心网网元接收到该第三消息后确认AF网元请求删除第一节点的本地路由。
一种实施方式中，该第三消息包括第一节点的标识。核心网网元可以通过该第三消息 确认AF网元请求删除第一节点的所有本地路由。
另一种实施方式中，该第三消息包括第一节点的标识和第一节点所属的本地路由节点组A的组标识。核心网网元可以通过该第三消息确认AF网元请求将节点组A中的第一节点删除。也就是说，第三消息用于请求删除第一节点与节点组A中的其他节点的本地路由。
可选地，第三消息还包括节点组A中的节点的标识。
另一种实施方式中，该第三消息包括第一节点的标识和一个或多个第二节点的标识。
核心网网元可以通过该第三消息确认AF网元请求删除第一节点与该一个或多个第二节点的本地路由。
作为示例非限定，该第三消息可以是本地路由删除请求消息。
S520，核心网网元向IAB宿主节点发送第四消息，该第四消息用于指示删除第一节点的本地路由。
S530，IAB宿主节点向本地路由节点发送第六消息，该第六消息用于指示删除第一节点的本地路由。
IAB宿主节点接收到该第四消息后，确定需要删除该第一节点的本地路由。
一种实施方式中，该第四消息包括第一节点的标识，IAB宿主节点根据该第四消息确认需要删除该第一节点的所有本地路由，以及IAB宿主节点确认为该第一节点提供本地路由服务的本地路由节点，向该本地路由节点发送第六消息，指示删除第一节点的本地路由。
另一种实施方式中，该第四消息包括第一节点的标识和第一节点所属的节点组A的标识。IAB宿主节点根据该第四消息确认需要从节点组A中删除第一节点，也就是说，删除第一节点与该节点组A中其他节点的本地路由。IAB宿主节点确认该节点组A的本地路由节点，向该本地路由节点发送第六消息，指示删除第一节点的本地路由。
可选地，第四消息还包括节点组A中的节点的标识。
可选地，IAB宿主节点为删除第一节点后的节点组A选择本地路由节点，在节点组A的本地路由节点发生改变的情况下，IAB宿主节点向新的本地路由节点发送建立节点组A的本地路由的指示消息。
另一种实施方式中，该第四消息包括该第一节点的标识和一个或多个第二节点的标识。IAB宿主节点根据该第四消息确认需要删除该第一节点与该一个或多个第二节点的本地路由，以及IAB宿主节点确认为该第一节点提供本地路由服务的本地路由节点，向该本地路由节点发送第六消息，指示删除第一节点的本地路由。
本地路由节点接收到该第六消息后，可以删除第一节点的本地路由表项，或者说删除第一节点的本地路由规则。本地路由节点接收到该第六消息后，还可以关闭针对第一节点的路由学习能力，以及关闭数据交换能力。
以上，结合图2至图5详细说明了本申请实施例提供的方法。以下，结合图6、图7详细说明本申请实施例提供的装置。
图6是本申请实施例提供的通信装置的示意性框图。如图6所示，该通信装置1500可以包括处理单元1510和收发单元1520。
在一种可能的设计中，该通信装置1500可对应于上文方法实施例中的IAB宿主节点，例如，可以为IAB宿主节点，或者配置于终端设备中的芯片。
应理解，该通信装置1500可对应于根据本申请实施例的方法200、500中的IAB宿主 节点，该通信装置1500可以包括用于执行图2、图5中的方法200、500中IAB宿主节点执行的方法的单元。并且，该通信装置1500中的各单元和上述其他操作和/或功能分别为了实现图2、图5中的方法200、500的相应流程。
其中，当该通信装置1500用于执行图2中的方法200，收发单元1520可用于执行方法200中的S220、S240，处理单元1510可用于执行方法200中的S230。当该通信装置1500用于执行图5中的方法500，收发单元1520可用于执行方法500中的S520、S530。应理解，各单元执行上述相应步骤的具体过程在上述方法实施例中已经详细说明，为了简洁，在此不再赘述。
还应理解，该通信装置1500为IAB宿主节点时，该通信装置1500中的收发单元1520可对应于图7中示出的通信装置1600中的收发器1620，该通信装置1500中的处理单元1510可对应于图7中示出的通信装置1600中的处理器1610。
还应理解，该通信装置1500为IAB宿主节点时，该通信装置1500中的收发单元1520可通过通信接口(如收发器或输入/输出接口)实现，例如可对应于图7中示出的通信装置1600中的收发器1620，该通信装置1500中的处理单元1510可通过至少一个处理器实现，例如可对应于图7中示出的通信装置1600中的处理器1610，该通信装置1500中的处理单元1510还可以通过至少一个逻辑电路实现。
可选地，通信装置1500还可以包括处理单元1510，该处理单元1510可以用于处理指令或者数据，以实现相应的操作。
可选地，通信装置1500还可以包括存储单元，该存储单元可以用于存储指令或者数据，处理单元可以调用该存储单元中存储的指令或者数据，以实现相应的操作。例如存储单元可对应于图7中示出的通信装置1600中的存储器1630，该通信装置1500中的存储单元可通过至少一个存储器实现。
应理解，各单元执行上述相应步骤的具体过程在上述方法实施例中已经详细说明，为了简洁，在此不再赘述。
在另一种可能的设计中，该通信装置1500可对应于上文方法实施例中的核心网网元，例如，可以为核心网网元，或者配置于核心网网元中的芯片。
应理解，该通信装置1500可对应于根据本申请实施例的方法200、500中的核心网网元，该通信装置1500可以包括用于执行图2、图5中的方法200、500中核心网网元执行的方法的单元。并且，该通信装置1500中的各单元和上述其他操作和/或功能分别为了实现图2、图5中的方法200、500的相应流程。
其中，当该通信装置1500用于执行图2中的方法200，收发单元1520可用于执行方法200中的S210、S220。当该通信装置1500用于执行图5中的方法500，收发单元1520可用于执行方法500中的S510、S520。应理解，各单元执行上述相应步骤的具体过程在上述方法实施例中已经详细说明，为了简洁，在此不再赘述。
还应理解，该通信装置1500为核心网网元时，该通信装置1500中的收发单元1520可对应于图7中示出的通信装置1600中的收发器1620，该通信装置1500中的处理单元1510可对应于图7中示出的通信装置1600中的处理器1610。
还应理解，该通信装置1500为核心网网元时，该通信装置1500中的收发单元1520可通过通信接口(如收发器或输入/输出接口)实现，例如可对应于图7中示出的通信装 置1600中的收发器1620，该通信装置1500中的处理单元1510可通过至少一个处理器实现，例如可对应于图7中示出的通信装置1600中的处理器1610，该通信装置1500中的处理单元1510还可以通过至少一个逻辑电路实现。
可选地，通信装置1500还可以包括处理单元1510，该处理单元1510可以用于处理指令或者数据，以实现相应的操作。
可选地，通信装置1500还可以包括存储单元，该存储单元可以用于存储指令或者数据，处理单元可以调用该存储单元中存储的指令或者数据，以实现相应的操作。例如存储单元可对应于图7中示出的通信装置1600中的存储器1630，该通信装置1500中的存储单元可通过至少一个存储器实现。
应理解，各单元执行上述相应步骤的具体过程在上述方法实施例中已经详细说明，为了简洁，在此不再赘述。
在另一种可能的设计中，该通信装置1500可对应于上文方法实施例中的本地路由节点，例如，可以为本地路由节点，或者配置于本地路由节点中的芯片。
应理解，该通信装置1500可对应于根据本申请实施例的方法200、500中的本地路由节点，该通信装置1500可以包括用于执行图2、图5中的方法200、500中本地路由节点执行的方法的单元。并且，该通信装置1500中的各单元和上述其他操作和/或功能分别为了实现图2、图5中的方法200、500的相应流程。
其中，当该通信装置1500用于执行图2中的方法200，收发单元1520可用于执行方法200中的S240、S260、S280，处理单元1510可用于执行方法200中的S250、S270。当该通信装置1500用于执行图5中的方法500，收发单元1520可用于执行方法500中的S530，处理单元1510可用于执行方法500中的S540。应理解，各单元执行上述相应步骤的具体过程在上述方法实施例中已经详细说明，为了简洁，在此不再赘述。
还应理解，该通信装置1500为本地路由节点时，该通信装置1500中的收发单元1520可对应于图7中示出的通信装置1600中的收发器1620，该通信装置1500中的处理单元1510可对应于图7中示出的通信装置1600中的处理器1610。
还应理解，该通信装置1500为本地路由节点时，该通信装置1500中的收发单元1520可通过通信接口(如收发器或输入/输出接口)实现，例如可对应于图7中示出的通信装置1600中的收发器1620，该通信装置1500中的处理单元1510可通过至少一个处理器实现，例如可对应于图7中示出的通信装置1600中的处理器1610，该通信装置1500中的处理单元1510还可以通过至少一个逻辑电路实现。
可选地，通信装置1500还可以包括处理单元1510，该处理单元1510可以用于处理指令或者数据，以实现相应的操作。
可选地，通信装置1500还可以包括存储单元，该存储单元可以用于存储指令或者数据，处理单元可以调用该存储单元中存储的指令或者数据，以实现相应的操作。例如存储单元可对应于图7中示出的通信装置1600中的存储器1630，该通信装置1500中的存储单元可通过至少一个存储器实现。
应理解，各单元执行上述相应步骤的具体过程在上述方法实施例中已经详细说明，为了简洁，在此不再赘述。
在另一种可能的设计中，该通信装置1500可对应于上文方法实施例中的第一节点， 例如，可以为第一节点，或者配置于第一节点中的芯片。
应理解，该通信装置1500可对应于根据本申请实施例的方法200中的第一节点，该通信装置1500可以包括用于执行图2中的方法200中第一节点执行的方法的单元。并且，该通信装置1500中的各单元和上述其他操作和/或功能分别为了实现图2中的方法200的相应流程。
其中，当该通信装置1500用于执行图2中的方法200，收发单元1520可用于执行方法200中的S260。应理解，各单元执行上述相应步骤的具体过程在上述方法实施例中已经详细说明，为了简洁，在此不再赘述。
还应理解，该通信装置1500为第一节点时，该通信装置1500中的收发单元1520可对应于图7中示出的通信装置1600中的收发器1620，该通信装置1500中的处理单元1510可对应于图7中示出的通信装置1600中的处理器1610。
还应理解，该通信装置1500为第一节点时，该通信装置1500中的收发单元1520可通过通信接口(如收发器或输入/输出接口)实现，例如可对应于图7中示出的通信装置1600中的收发器1620，该通信装置1500中的处理单元1510可通过至少一个处理器实现，例如可对应于图7中示出的通信装置1600中的处理器1610，该通信装置1500中的处理单元1510还可以通过至少一个逻辑电路实现。
可选地，通信装置1500还可以包括处理单元1510，该处理单元1510可以用于处理指令或者数据，以实现相应的操作。
可选地，通信装置1500还可以包括存储单元，该存储单元可以用于存储指令或者数据，处理单元可以调用该存储单元中存储的指令或者数据，以实现相应的操作。例如存储单元可对应于图7中示出的通信装置1600中的存储器1630，该通信装置1500中的存储单元可通过至少一个存储器实现。
应理解，各单元执行上述相应步骤的具体过程在上述方法实施例中已经详细说明，为了简洁，在此不再赘述。
图7中的处理器1610可以和存储器1630可以合成一个处理装置，处理器1610用于执行存储器1630中存储的程序代码来实现上述功能。具体实现时，该存储器1630也可以集成在处理器1610中，或者独立于处理器1610。该处理器1610可以与图6中的处理单元对应。
图7中的收发器1620可以与图6中的收发单元对应。收发器2020可以包括接收器(或称接收机、接收电路)和发射器(或称发射机、发射电路)。其中，接收器用于接收信号，发射器用于发射信号。
本申请实施例还提供了一种处理装置，包括处理器和接口；所述处理器用于执行上述任一方法实施例中的方法。
应理解，上述处理装置可以是一个或多个芯片。例如，该处理装置可以是现场可编程门阵列(field programmable gate array，FPGA)，可以是专用集成芯片(application specific integrated circuit，ASIC)，还可以是系统芯片(system on chip，SoC)，还可以是中央处理器(central processor unit，CPU)，还可以是网络处理器(network processor，NP)，还可以是数字信号处理电路(digital signal processor，DSP)，还可以是微控制器(micro controller unit，MCU)，还可以是可编程控制器(programmable logic device，PLD)或其 他集成芯片。
在实现过程中，上述方法的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。为避免重复，这里不再详细描述。
应注意，本申请实施例中的处理器可以是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。
可以理解，本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM，DR RAM)。应注意，本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
根据本申请实施例提供的方法，本申请还提供一种计算机程序产品，该计算机程序产品包括：计算机程序代码，当该计算机程序代码在计算机上运行时，使得该计算机执行图2、图5所示实施例中的方法。
根据本申请实施例提供的方法，本申请还提供一种计算机可读介质，该计算机可读介质存储有程序代码，当该程序代码在计算机上运行时，使得该计算机执行图2、图5所示实施例中的方法。
根据本申请实施例提供的方法，本申请还提供一种系统，其包括前述的一个或多个终端设备以及一个或多个网络设备。
上述各个装置实施例中网络设备与终端设备和方法实施例中的网络设备或终端设备 完全对应，由相应的模块或单元执行相应的步骤，例如通信单元(收发器)执行方法实施例中接收或发送的步骤，除发送、接收外的其它步骤可以由处理单元(处理器)执行。具体单元的功能可以参考相应的方法实施例。其中，处理器可以为一个或多个。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如，高密度数字视频光盘(digital video disc，DVD))、或者半导体介质(例如，固态硬盘(solid state disc，SSD))等。
上述各个装置实施例中网络设备与终端设备和方法实施例中的网络设备或终端设备完全对应，由相应的模块或单元执行相应的步骤，例如通信单元(收发器)执行方法实施例中接收或发送的步骤，除发送、接收外的其它步骤可以由处理单元(处理器)执行。具体单元的功能可以参考相应的方法实施例。其中，处理器可以为一个或多个。
在本说明书中使用的术语“部件”、“模块”、“系统”等用于表示计算机相关的实体、硬件、固件、硬件和软件的组合、软件、或执行中的软件。例如，部件可以是但不限于，在处理器上运行的进程、处理器、对象、可执行文件、执行线程、程序和/或计算机。通过图示，在计算设备上运行的应用和计算设备都可以是部件。一个或多个部件可驻留在进程和/或执行线程中，部件可位于一个计算机上和/或分布在2个或更多个计算机之间。此外，这些部件可从在上面存储有各种数据结构的各种计算机可读介质执行。部件可例如根据具有一个或多个数据分组(例如来自与本地系统、分布式系统和/或网络间的另一部件交互的二个部件的数据，例如通过信号与其它系统交互的互联网)的信号通过本地和/或远程进程来通信。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组 件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
在上述实施例中，各功能单元的功能可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令(程序)。在计算机上加载和执行所述计算机程序指令(程序)时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质(例如固态硬盘(solid state disk，SSD))等。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (71)

  1. 一种通信方法，其特征在于，包括：
    接入回传一体化IAB宿主节点接收来自核心网网元的第一消息，所述第一消息用于指示建立第一节点与第二节点之间的本地路由，其中所述第一节点为IAB节点；
    所述IAB宿主节点根据所述第一消息确定本地路由节点，其中，所述本地路由为所述第一节点与所述第二节点之间的数据包通过本地路由节点进行本地转发。
  2. 根据权利要求1所述的方法，其特征在于，所述第一消息包括以下一项或多项：
    所述第一节点的标识、所述第二节点的标识或所述第二节点所属的节点组的组标识。
  3. 根据权利要求1或2所述的方法，其特征在于，所述第一节点是采用第三代合作伙伴计划3GPP接入技术接入网络的节点，且所述第一节点为通过非3GPP接入技术接入网络的设备提供中继服务。
  4. 根据权利要求1至3中任一项所述的方法，其特征在于，所述IAB宿主节点根据所述第一消息确定本地路由节点，包括：
    所述IAB宿主节点根据所述第一消息和所述IAB宿主节点的下层节点之间的拓扑关系确定所述本地路由节点，
    其中，所述本地路由节点为所述第一节点和所述第二节点的公共上层节点。
  5. 根据权利要求1至4中任一项所述的方法，其特征在于，所述本地路由节点为所述第二节点和所述第一节点的最小公共上层节点。
  6. 根据权利要求1至5中任一项所述的方法，其特征在于，所述本地路由节点为IAB节点或所述IAB宿主节点。
  7. 根据权利要求1至6中任一项所述的方法，其特征在于，所述本地路由节点为IAB节点，所述方法还包括：
    所述IAB宿主节点向所述本地路由节点发送第二消息，所述第二消息用于指示建立所述第一节点与所述第二节点之间的本地路由。
  8. 根据权利要求7所述的方法，其特征在于，所述第二消息包括以下一项或多项：
    所述第一节点的标识、所述第二节点的标识或所述第二节点所属的节点组的组标识。
  9. 根据权利要求1至6中任一项所述的方法，其特征在于，所述本地路由节点为所述IAB宿主节点，所述方法还包括：
    所述IAB宿主节点启动针对所述第一节点的路由学习，和/或，
    所述IAB宿主节点生成所述第一节点与所述第二节点之间的路由转发表。
  10. 根据权利要求1至9中任一项所述的方法，其特征在于，所述第二节点包括终端设备和/或IAB节点。
  11. 根据权利要求1至10中任一项所述的方法，其特征在于，所述方法还包括:
    所述IAB宿主节点接收来自所述核心网网元的第三消息，所述第三消息用于指示删除所述第一节点与所述第二节点之间的本地路由；
    所述IAB宿主节点向所述本地路由节点发送第四消息，所述第四消息用于指示所述本地路由节点删除所述第一节点与所述第二节点之间的本地路由。
  12. 一种通信方法，其特征在于，包括：
    核心网网元接收来自应用功能AF网元的第五消息，所述第五消息用于请求建立第一节点与第二节点之间的本地路由，其中，所述第一节点为接入回传一体化IAB节点，所述本地路由为所述第一节点与所述第二节点之间的数据包通过本地路由节点进行本地转发；
    所述核心网网元向IAB宿主节点发送第一消息，所述第一消息用于指示建立所述第一节点与所述第二节点之间的本地路由。
  13. 根据权利要求12所述的方法，其特征在于，所述第一消息和/或第五消息包括以下一项或多项：
    所述第一节点的标识、所述第二节点的标识或所述第二节点所属的节点组的组标识。
  14. 根据权利要求12或13所述的方法，其特征在于，所述本地路由节点为IAB节点或所述IAB宿主节点。
  15. 根据权利要求12至14中任一项所述的方法，其特征在于，所述第二节点包括终端设备和/或IAB节点。
  16. 根据权利要求12至15中任一项所述的方法，其特征在于，所述第一节点是采用3GPP接入技术接入网络的节点，且所述第一节点为通过非3GPP接入技术接入网络的设备提供中继服务。
  17. 根据权利要求12至16中任一项所述的方法，其特征在于，所述方法还包括：
    所述核心网网元生成所述第一节点与所述第二节点之间的关联信息，或者，
    所述核心网网元生成所述第一节点与所述第二节点所属的节点组的关联信息。
  18. 根据权利要求12至17中任一项所述的方法，其特征在于，所述方法还包括：
    所述核心网网元接收来自所述AF网元的第六消息，所述第六消息用于请求删除所述第一节点与所述第二节点之间的本地路由；
    所述核心网网元向所述IAB宿主节点发送第七消息，所述第七消息用于指示删除所述第一节点与所述第二节点之间的本地路由。
  19. 一种通信方法，其特征在于，包括：
    本地路由节点接收来自接入回传一体化IAB宿主节点的第二消息，所述第二消息用于指示建立第一节点与第二节点之间的本地路由，所述第一节点为IAB节点；
    所述本地路由节点根据所述第二消息建立所述第一节点与所述第二节点之间的本地路由，
    其中，所述本地路由为所述第一节点与所述第二节点之间的数据包通过所述本地路由节点进行本地转发。
  20. 根据权利要求19所述的方法，其特征在于，所述第二消息包括以下一项或多项：
    所述第一节点的标识、所述第二节点的标识或所述第二节点所属的节点组的组标识。
  21. 根据权利要求19或20所述的方法，其特征在于，所述本地路由节点为IAB节点或所述IAB宿主节点。
  22. 根据权利要求19至21中任一项所述的方法，其特征在于，所述第二节点包括终端设备和/或IAB节点。
  23. 根据权利要求19至22中任一项所述的方法，其特征在于，所述第一节点是采用3GPP接入技术接入网络的节点，且所述第一节点为通过非3GPP接入技术接入网络的设 备提供中继服务。
  24. 根据权利要求19至23中任一项所述的方法，其特征在于，所述方法还包括：
    所述本地路由节点启动针对所述第一节点的路由学习，和/或，
    所述本地路由节点生成所述第一节点与所述第二节点之间的路由转发表。
  25. 根据权利要求19至24中任一项所述的方法，其特征在于，所述方法还包括：
    所述本地路由节点接收来自所述第一节点的第一格式的数据包，所述第一格式与3GPP接入技术对应，所述第一格式的数据包中包括第三节点向所述第二节点发送的数据，所述第三节点为采用非3GPP接入技术与所述第一节点建立无线连接的节点；
    所述本地路由节点将所述第一格式的数据包本地转发至所述第二节点。
  26. 根据权利要求25所述的方法，其特征在于，所述第一格式具体与所述第一节点的用户面配置相对应。
  27. 一种通信方法，其特征在于，包括：
    第一节点接收来自第三节点的第二格式的数据包，所述第二格式的数据包中包括第一数据，所述第一数据为所述第三节点向第二节点发送的数据，其中所述第一节点为接入回传一体化IAB节点，所述第一节点与所述第二节点已经建立本地路由，所述本地路由为所述第一节点与所述第二节点之间的数据包通过本地路由节点进行本地转发；
    所述第一节点向本地路由节点发送第一格式的数据包，所述第一格式的数据包中包括所述第一数据。
  28. 根据权利要求27所述的方法，其特征在于，所述方法还包括：
    所述第一节点对所述第二格式的数据包进行格式转换，得到所述第一格式的数据包。
  29. 根据权利要求27或28所述的方法，其特征在于，所述第一节点和/或所述第二节点为采用3GPP接入技术接入网络的节点，所述第一格式与所述3GPP接入技术对应
  30. 根据权利要求29所述的方法，其特征在于，所述第一格式具体与所述第一节点的用户面配置相对应。
  31. 根据权利要求27至29中任一项所述的方法，其特征在于，所述第三节点为采用非3GPP接入技术与所述第一节点建立无线连接的节点，所述第二格式与所述非3GPP接入技术对应。
  32. 根据权利要求27至31中任一项所述的方法，其特征在于，所述本地路由节点为IAB节点或所述IAB宿主节点。
  33. 根据权利要求27至32中任一项所述的方法，其特征在于，所述第二节点包括终端设备和/或IAB节点。
  34. 一种通信装置，其特征在于，包括：
    收发单元，用于接收来自核心网网元的第一消息，所述第一消息用于指示建立第一节点与第二节点之间的本地路由，其中所述第一节点为接入回传一体化IAB节点；
    处理单元，用于根据所述第一消息确定本地路由节点，其中，所述本地路由为所述第一节点与所述第二节点之间的数据包通过所述本地路由节点进行本地转发。
  35. 根据权利要求34所述的装置，其特征在于，所述第一消息包括以下一项或多项：
    所述第一节点的标识、所述第二节点的标识或所述第二节点所属的节点组的组标识。
  36. 根据权利要求34或35所述的装置，其特征在于，所述第一节点是采用3GPP接 入技术接入网络的节点，且所述第一节点为通过非3GPP接入技术接入网络的设备提供中继服务。
  37. 根据权利要求34至36中任一项所述的装置，其特征在于，
    所述处理单元具体用于根据所述第一消息和IAB宿主节点的下层节点之间的拓扑关系确定所述本地路由节点，
    其中，所述本地路由节点为所述第一节点和所述第二节点的公共上层节点。
  38. 根据权利要求34至37中任一项所述的装置，其特征在于，所述本地路由节点为所述第二节点和所述第一节点的最小公共上层节点。
  39. 根据权利要求34至38中任一项所述的装置，其特征在于，所述本地路由节点为IAB节点或IAB宿主节点。
  40. 根据权利要求34至39中任一项所述的装置，其特征在于，所述本地路由节点为IAB节点，以及，
    所述收发单元还用于向所述本地路由节点发送第二消息，所述第二消息用于指示建立所述第一节点与所述第二节点之间的本地路由。
  41. 根据权利要求40所述的装置，其特征在于，所述第二消息包括以下一项或多项：
    所述第一节点的标识、所述第二节点的标识或所述第二节点所属的节点组的组标识。
  42. 根据权利要求34至39中任一项所述的装置，其特征在于，所述本地路由节点为IAB宿主节点，以及，
    所述处理单元还用于启动针对所述第一节点的路由学习，和/或，
    所述处理单元还用于生成所述第一节点与所述第二节点之间的路由转发表。
  43. 根据权利要求34至42中任一项所述的装置，其特征在于，所述第二节点包括终端设备和/或IAB节点。
  44. 根据权利要求34至43中任一项所述的装置，其特征在于，
    所述收发单元还用于接收来自所述核心网网元的第三消息，所述第三消息用于指示删除所述第一节点与所述第二节点之间的本地路由；
    所述收发单元还用于向所述本地路由节点发送第四消息，所述第四消息用于指示所述本地路由节点删除所述第一节点与所述第二节点之间的本地路由。
  45. 一种通信装置，其特征在于，包括：
    收发单元，用于接收来自应用功能AF网元的第五消息，所述第五消息用于请求建立第一节点与第二节点之间的本地路由，其中，所述第一节点为接入回传一体化IAB节点，所述本地路由为所述第一节点与所述第二节点之间的数据包通过本地路由节点进行本地转发；
    处理单元，用于根据第五消息确定建立第一节点与第二节点之间的本地路由；
    所述收发单元还用于向IAB宿主节点发送第一消息，所述第一消息用于指示建立所述第一节点与所述第二节点之间的本地路由。
  46. 根据权利要求45所述的装置，其特征在于，所述第一消息和/或第五消息包括以下一项或多项：
    所述第一节点的标识、所述第二节点的标识或所述第二节点所属的节点组的组标识。
  47. 根据权利要求45或46所述的装置，其特征在于，所述本地路由节点为IAB节点 或所述IAB宿主节点。
  48. 根据权利要求45至47中任一项所述的装置，其特征在于，所述第二节点包括终端设备和/或IAB节点。
  49. 根据权利要求45至48中任一项所述的装置，其特征在于，所述第一节点是采用3GPP接入技术接入网络的节点，且所述第一节点为通过非3GPP接入技术接入网络的设备提供中继服务。
  50. 根据权利要求45至49中任一项所述的装置，其特征在于，
    所述处理单元还用于生成所述第一节点与所述第二节点之间的关联信息，或者，
    所述处理单元还用于生成所述第一节点与所述第二节点所属的节点组的关联信息。
  51. 根据权利要求45至50中任一项所述的装置，其特征在于，
    所述收发单元还用于接收来自所述AF网元的第六消息，所述第六消息用于请求删除所述第一节点与所述第二节点之间的本地路由；
    所述收发单元还用于向所述IAB宿主节点发送第七消息，所述第七消息用于指示删除所述第一节点与所述第二节点之间的本地路由。
  52. 一种通信装置，其特征在于，包括：
    收发单元，用于接收来自接入回传一体化IAB宿主节点的第二消息，所述第二消息用于指示建立第一节点与第二节点之间的本地路由，所述第一节点为IAB节点；
    处理单元，用于根据所述第二消息建立所述第一节点与所述第二节点之间的本地路由，
    其中，所述本地路由为所述第一节点与所述第二节点之间的数据包通过所述通信装置进行本地转发。
  53. 根据权利要求52所述的装置，其特征在于，所述第二消息包括以下一项或多项：
    所述第一节点的标识、所述第二节点的标识或所述第二节点所属的节点组的组标识。
  54. 根据权利要求52或53所述的装置，其特征在于，所述通信装置配置于IAB节点或所述通信装置为IAB节点，或者，
    所述通信装置配置于所述IAB宿主节点或所述通信装置为所述IAB宿主节点。
  55. 根据权利要求52至54中任一项所述的装置，其特征在于，所述第二节点包括终端设备和/或IAB节点。
  56. 根据权利要求52至55中任一项所述的装置，其特征在于，所述第一节点是采用3GPP接入技术接入网络的节点，且所述第一节点为通过非3GPP接入技术接入网络的设备提供中继服务。
  57. 根据权利要求52至56中任一项所述的装置，其特征在于，
    所述处理单元还用于启动针对所述第一节点的路由学习，和/或，
    所述处理单元还用于生成所述第一节点与所述第二节点之间的路由转发表。
  58. 根据权利要求52至57中任一项所述的装置，其特征在于，
    所述收发单元还用于接收来自所述第一节点的第一格式的数据包，所述第一格式与3GPP接入技术对应，所述第一格式的数据包中包括第三节点向所述第二节点发送的数据，所述第三节点为采用非3GPP接入技术与所述第一节点建立无线连接的节点；
    所述处理单元还用于将所述第一格式的数据包本地转发至所述第二节点。
  59. 根据权利要求58所述的装置，其特征在于，所述第一格式具体与所述第一节点的用户面配置相对应。
  60. 一种通信装置，其特征在于，包括：
    收发单元，用于接收来自第三节点的第二格式的数据包，所述第二格式的数据包中包括第一数据，所述第一数据为所述第三节点向第二节点发送的数据，所述通信装置与所述第二节点已经建立本地路由，所述本地路由为所述通信装置与所述第二节点之间的数据包通过本地路由节点进行本地转发；
    处理单元，生成第一格式的数据包，所述第一格式的数据包中包括所述第一数据；
    所述收发单元还用于向本地路由节点发送所述第一格式的数据包。
  61. 根据权利要求60所述的装置，其特征在于，
    所述处理单元具体用于对所述第二格式的数据包进行格式转换，得到所述第一格式的数据包。
  62. 根据权利要求60或61所述的装置，其特征在于，所述通信装置和/或所述第二节点为采用3GPP接入技术接入网络的节点，所述第一格式与所述3GPP接入技术对应
  63. 根据权利要求3所述的装置，其特征在于，所述第一格式具体与所述通信装置的用户面配置相对应。
  64. 根据权利要求60至63中任一项所述的装置，其特征在于，所述第三节点为采用非3GPP接入技术与所述通信装置建立无线连接的节点，所述第二格式与所述非3GPP接入技术对应。
  65. 根据权利要求60至64中任一项所述的装置，其特征在于，所述本地路由节点为接入回传一体化IAB节点或所述IAB宿主节点。
  66. 根据权利要求60至65中任一项所述的装置，其特征在于，所述第二节点包括终端设备和/或IAB节点。
  67. 一种通信装置，包括至少一个处理器，所述至少一个处理器用于执行如权利要求1至33中任一项所述的方法。
  68. 一种计算机可读存储介质，包括计算机程序，当其在计算机上运行时，使得所述计算机执行如权利要求1至33中任一项所述的方法。
  69. 一种芯片，其特征在于，包括至少一个处理器和通信接口；
    所述通信接口用于接收来自所述通信装置之外的其它通信装置的信号并传输至所述处理器或将来自所述处理器的信号发送给所述通信装置之外的其它通信装置，所述处理器通过逻辑电路或执行代码指令用于实现如权利要求1至33中任一项所述的方法。
  70. 一种计算机程序产品，其特征在于，所述计算机程序产品包括：计算机程序，当所述计算机程序被运行时，使得计算机执行如权利要求1至33中任一项所述的方法。
  71. 一种通信系统，其特征在于，包括如权利要求34至66中任一项所述的装置。
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