WO2023274127A1 - 路由选择、重路由及路由配置方法、iab节点和cu节点 - Google Patents

路由选择、重路由及路由配置方法、iab节点和cu节点 Download PDF

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Publication number
WO2023274127A1
WO2023274127A1 PCT/CN2022/101454 CN2022101454W WO2023274127A1 WO 2023274127 A1 WO2023274127 A1 WO 2023274127A1 CN 2022101454 W CN2022101454 W CN 2022101454W WO 2023274127 A1 WO2023274127 A1 WO 2023274127A1
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iab node
target
lbt
node
lbt result
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PCT/CN2022/101454
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English (en)
French (fr)
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刘进华
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维沃移动通信有限公司
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0011Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0055Transmission or use of information for re-establishing the radio link
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W40/00Communication routing or communication path finding
    • H04W40/02Communication route or path selection, e.g. power-based or shortest path routing

Definitions

  • the application belongs to the field of communication technology, and specifically relates to a routing selection, rerouting and routing configuration method, an Integrated Access and Backhaul (IAB) node, a Centralized Unit (CU) node, and a network side device.
  • IAB Integrated Access and Backhaul
  • CU Centralized Unit
  • the sending/forwarding IAB node in the IAB network can have two or more optional next-hop IAB nodes through dual connections.
  • the sending/forwarding IAB node can select the The next-hop IAB node with better road communication quality sends or forwards data;
  • the IAB network operates in an unlicensed frequency band and performs Listen Before Talk (LBT)
  • LBT Listen Before Talk
  • the LBT has a low probability of success or failure. In this case, it is not allowed to reselect the backhaul path, causing the sending/forwarding node to wait for the success of the subsequent LBT on the target backhaul path before performing data transmission, which increases the transmission delay.
  • the embodiment of the present application provides a routing selection, rerouting and routing configuration method, IAB node and CU node, which can solve the problem of increased transmission due to the reselection of the return path when the IAB network is running in an unlicensed frequency band.
  • the problem of delay is a routing selection, rerouting and routing configuration method, IAB node and CU node, which can solve the problem of increased transmission due to the reselection of the return path when the IAB network is running in an unlicensed frequency band. The problem of delay.
  • a method for route selection includes:
  • the first IAB node obtains the LBT result
  • the first IAB node determines a Backhaul Adaptation Protocol (BAP) route selection for data forwarding according to the LBT result.
  • BAP Backhaul Adaptation Protocol
  • a routing device for a first IAB node, and the routing device includes:
  • the first obtaining module is used to obtain the LBT result
  • the first determining module is configured to determine the BAP route selection for data forwarding according to the LBT result.
  • a rerouting method which includes:
  • the third IAB node acquires first indication information, where the first indication information is used to indicate the LBT result or instruct the third IAB node to perform rerouting;
  • the third IAB node performs rerouting according to the first indication information.
  • a rerouting device which is used for a third IAB node, and the rerouting device includes:
  • the second acquiring module is configured to acquire the first indication information, wherein the first indication information is used to indicate the LBT result or instruct the third IAB node to perform rerouting;
  • a rerouting module configured to perform rerouting according to the first indication information.
  • a routing configuration method which includes:
  • the first target IAB node receives target configuration information from the CU node, wherein the target configuration information is determined according to the LBT result related to the target backhaul path obtained by the CU node, and the target configuration information is used to configure the first BAP routing selection for data forwarding of the target IAB node, where the target return path includes the first target IAB node.
  • a routing configuration device which is used for a first target IAB node, and the routing configuration device includes:
  • the third receiving module is configured to receive target configuration information from the CU node, wherein the target configuration information is determined according to the LBT result related to the target backhaul path acquired by the CU node, and the target configuration information is used to configure the For BAP routing selection of data forwarding of the first target IAB node, the target return path includes the first target IAB node.
  • a routing configuration method comprising:
  • the CU node receives the LBT result related to the target return path from the IAB node in the target return path;
  • the CU node sends target configuration information to the first target IAB node according to the LBT result related to the target return path, wherein the target configuration information is used to configure the BAP route for data forwarding of the first target IAB node
  • the target backhaul path includes the first target IAB node.
  • a routing configuration device for a CU node, and the routing configuration device includes:
  • a fourth receiving module configured to receive an LBT result related to the target return path from an IAB node in the target return path
  • the third sending module is configured to send target configuration information to the first target IAB node according to the LBT result related to the target return path, wherein the target configuration information is used to configure data forwarding of the first target IAB node BAP route selection, the target backhaul path includes the first target IAB node.
  • a first IAB node in a ninth aspect, includes a processor, a memory, and a program or instruction stored in the memory and operable on the processor.
  • the program or instruction is executed by The processor implements the steps of the method described in the first aspect when executed.
  • a first IAB node including a processor and a communication interface, wherein the communication interface is used to obtain an LBT result, and the processor is used to determine the BAP route selection for data forwarding according to the LBT result .
  • a third IAB node in an eleventh aspect, includes a processor, a memory, and a program or instruction stored in the memory and operable on the processor, the program or instruction When executed by the processor, the steps of the method according to the third aspect are realized.
  • a third IAB node including a processor and a communication interface, wherein the communication interface is used to obtain first indication information, wherein the first indication information is used to indicate the LBT result or indicate The third IAB node performs rerouting, and the processor is configured to perform rerouting according to the first indication information.
  • a first target IAB node in a thirteenth aspect, includes a processor, a memory, and a program or instruction stored on the memory and operable on the processor, the program Or, when the instructions are executed by the processor, the steps of the method according to the fifth aspect are implemented.
  • a first target IAB node including a processor and a communication interface, wherein the communication interface is used to receive target configuration information from a CU node, wherein the target configuration information is based on the CU node
  • the obtained LBT result related to the target backhaul path is determined, and the target configuration information is used to configure the BAP routing selection for data forwarding of the first target IAB node, and the target backhaul path includes the first target IAB node .
  • a CU node in a fifteenth aspect, includes a processor, a memory, and a program or instruction stored on the memory and executable on the processor, the program or instruction is processed by the implement the steps of the method as described in the seventh aspect when executed by the controller.
  • a CU node including a processor and a communication interface, wherein the communication interface is used to receive an LBT result related to the target return path from an IAB node in the target return path, the The communication interface is further configured to send target configuration information to the first target IAB node according to the LBT result related to the target return path, wherein the target configuration information is used to configure the BAP for data forwarding of the first target IAB node Routing selection, the target return path includes the first target IAB node.
  • a readable storage medium is provided, and a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the steps of the method as described in the first aspect are implemented, or The steps of the method described in the third aspect, or the implementation of the steps of the method described in the fifth aspect, or the implementation of the steps of the method described in the seventh aspect.
  • a chip in an eighteenth aspect, there is provided a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the method described in the first aspect method, or implement the method as described in the third aspect, or implement the method as described in the fifth aspect, or implement the method as described in the seventh aspect.
  • a computer program/program product is provided, the computer program/program product is stored in a non-volatile storage medium, and the program/program product is executed by at least one processor to implement the first
  • the first IAB node obtains the LBT result; and determines the BAP route selection for data forwarding according to the LBT result.
  • the IAB network can determine whether there is an LBT failure or a high probability of LBT failure on the target backhaul path and/or the alternative backhaul path according to the LBT result, and then backhaul from the target Selecting a return path with a low probability of LBT success or LBT failure among the path and the candidate return path is used as the return path for data transmission, which can reduce transmission delay.
  • Fig. 1a is a structural diagram of an IAB network applicable to the present application.
  • Figure 1b is a structural diagram of the terminal function module (Mobile Termination, MT)-distributed unit (Distributed Unit, DU) of the IAB system;
  • FIG. 2 is a flow chart of a routing method provided in an embodiment of the present application.
  • Figure 3a is one of the schematic diagrams of the rerouting process
  • Fig. 3b is the second schematic diagram of the rerouting process
  • Fig. 3c is the third schematic diagram of the rerouting process
  • Figure 4a is one of the schematic diagrams of the rerouting process based on spatial directionality
  • Figure 4b is the second schematic diagram of the rerouting process based on spatial directionality
  • FIG. 5 is a flowchart of a rerouting method provided in an embodiment of the present application.
  • FIG. 6 is a flow chart of a routing configuration method provided in an embodiment of the present application.
  • FIG. 7 is a flowchart of another routing configuration method provided by the embodiment of the present application.
  • FIG. 8 is a structural diagram of a routing selection device provided by an embodiment of the present application.
  • FIG. 9 is a structural diagram of a rerouting device provided in an embodiment of the present application.
  • FIG. 10 is a structural diagram of a routing configuration device provided in an embodiment of the present application.
  • FIG. 11 is a structural diagram of another routing configuration device provided by an embodiment of the present application.
  • FIG. 12 is a structural diagram of a network-side device provided by an embodiment of the present application.
  • FIG. 13 is a structural diagram of another network-side device provided by an embodiment of the present application.
  • first, second and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific sequence or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or described herein and that "first" and “second” distinguish objects. It is usually one category, and the number of objects is not limited. For example, there may be one or more first objects.
  • “and/or” in the description and claims means at least one of the connected objects, and the character “/” generally means that the related objects are an "or” relationship.
  • the IAB system is a technology that is being developed by New Radio (NR) Rel-16. By introducing the IAB system, it can solve the problem that the wired transmission network is not properly deployed when the access points are densely deployed. That is, when there is no wired transmission network, the access point can rely on the wireless network for data return.
  • the first IAB node that executes a routing selection method provided in the embodiment of the present application may be any IAB node in the IAB system.
  • the transmitter When NR operates on an unlicensed frequency, before using a certain channel for transmission, the transmitter (User Equipment (UE) or base station (gNB)) should detect the channel according to the LBT procedure , to determine if the channel is available.
  • the specific method is: the transmitter measures the power received on the channel, if the received power is higher than a preset value (the preset value is used to determine whether it is in an occupied state), then the channel will be determined as being occupied occupancy state. Otherwise, the channel will be determined to be unoccupied.
  • FIG. 1a shows a block diagram of an IAB system applicable to the embodiments of the present application.
  • an IAB system may include: access IAB node 11 (i.e. Access IAB node), forwarding IAB node 12 (i.e. Intermediate IAB node) and host IAB node 13 (i.e. Donor IAB node), wherein the host The IAB node 13 can be connected to a wired transmission network.
  • access IAB node 11 i.e. Access IAB node
  • forwarding IAB node 12 i.e. Intermediate IAB node
  • host IAB node 13 i.e. Donor IAB node
  • IAB nodes may include DU and MT.
  • an access point that is, IAB node
  • an upstream access point that is, the parent IAB node (parent IAB node)
  • transmission link backhaul link
  • IAB node After an IAB node establishes a complete backhaul link, the IAB node opens its DU function, and the DU will provide cell services, that is, the DU can provide access services for the terminal 14.
  • a self-backhaul loop includes a donor IAB (donor IAB) node, the donor IAB node is connected to other network-side devices through a wired connection.
  • the above-mentioned terminal 14 may also be called a terminal device or a user equipment (User Equipment, UE), which may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer) or a notebook computer, a personal digital assistant ( Personal Digital Assistant, PDA), handheld computer, netbook, ultra-mobile personal computer (Ultra-Mobile Personal Computer, UMPC), mobile Internet device (Mobile Internet Device, MID), wearable device (Wearable Device) or vehicle-mounted device (Vehicle User Equipment, VUE), pedestrian terminals (Pedestrian User Equipment, PUE) and other terminal-side equipment, wearable devices include: smart watches, bracelets, earphones, glasses, etc., which are not specifically limited here.
  • the DUs of all IAB nodes are connected to a CU node, and this node configures the DUs through the F1 application (F1-AP) protocol.
  • the CU configures the MT through the Radio Resource Control (RRC) protocol.
  • RRC Radio Resource Control
  • the BAP protocol layer is a unique protocol layer of the IAB system.
  • the BAP entity in each IAB node has an address, called the BAP address. Combined with the address and the path identifier (PATH ID) assigned by the IAB-donor-CU, it can be used to Route data.
  • PATH ID path identifier
  • the BAP protocol layer provides some functions as follows:
  • Routing function 1 Send the data packet from the CU node to the UE through the backhaul path or send the data packet from the UE to the CU node through the backhaul path;
  • Routing function 2 The BAP protocol also provides the routing function of F1-AP information, sending the F1 control information from the CU node to the IAB-DU through the return path or sending the F1 control information from the IAB-DU through the return path to the CU node;
  • the transmission function of Quality of Service (QoS) control information the BAP protocol layer defines some BAP control protocol data units (Protocol Data Unit, PDU) used in the IAB network, which are used for flow control and return Notification of wireless link failure, etc.
  • PDU Protocol Data Unit
  • a BAP data PDU contains a BAP header (header), and the BAP header contains a BAP routing ID (routing ID).
  • the BAP routing ID includes a destination IAB node (during downlink transmission, the destination IAB node is an access IAB node; In uplink transmission, the destination IAB node is the BAP address of the donor-DU node) and the path to the destination IAB node.
  • An IAB node determines the next hop receiving IAB node according to the PATH ID (the next hop receiving IAB node can be any one of an intermediate IAB node, a donor-DU and an access IAB node).
  • the routing selection method provided by the embodiment of the present application is used to select the one with a higher probability of LBT success or LBT success from the target backhaul path and the alternative backhaul path according to the LBT result as the BAP routing selection for data forwarding.
  • the wireless link fails or is congested on the backhaul path, it can be allowed to forward the data to a next-hop forwarding IAB node on the alternative path that can reach the target IAB node, and the next-hop forwarding IAB node forwards the data Sending to the destination IAB node, CU or UE can shorten the delay of data transmission and improve resource utilization.
  • FIG. 2 is a flow chart of a routing method provided in the embodiment of the present application.
  • the execution subject of the routing method may be the first IAB node.
  • the routing method may include the following steps:
  • Step 201 the first IAB node obtains the LBT result.
  • the above-mentioned first IAB node can be any IAB node in the IAB system except the destination IAB node, for example: sending IAB node, forwarding IAB node, or having at least two optional next-hop IAB nodes Node's send/forward IAB node etc.
  • the acquisition of the LBT result by the first IAB node includes at least one of the following:
  • the first IAB node receives the LBT result sent by the second IAB node, wherein the second IAB node is the parent IAB node, host IAB node or child IAB node of the first IAB node in the target backhaul path;
  • the first IAB node performs LBT to obtain an LBT result
  • the first IAB node receives the LBT result sent by the CU node.
  • the LBT result of a certain IAB node can be transmitted to other IAB nodes in the same backhaul path.
  • IAB nodes in the same backhaul path have only one next-hop IAB node, while other IAB nodes may have multiple optional next-hop IAB nodes.
  • the IAB node of the next-hop IAB node can obtain the LBT results of other IAB nodes, so as to determine which next-hop IAB node to select according to the obtained LBT results.
  • the second IAB node is the parent IAB node
  • host IAB node or child IAB node of the first IAB node in the target return path may include: the first IAB node is the second IAB node in the target return path Or, the first IAB node is the towering parent IAB node of the next-hop IAB node of the second IAB node in the target backhaul path, or, the second IAB node is the host IAB node.
  • the last hop IAB node of the first IAB node can be expressed as: the child IAB node of the first IAB node in uplink transmission, or the parent IAB node or host IAB node of the first IAB node in downlink transmission;
  • the next-hop IAB node of the first IAB node may be expressed as: the parent IAB node or host IAB node of the first IAB node in uplink transmission, or the child IAB node of the first IAB node in downlink transmission.
  • the downlink transmission is taken as an example for explanation and description.
  • the target backhaul path may include: a preferred uplink backhaul path and/or a preferred downlink backhaul path.
  • the LBT result received by the first IAB node from the second IAB node may include: the second IAB
  • the LBT result of the node to the next-hop IAB node in the alternative backhaul path which indicates that when the preferred uplink backhaul path and/or the preferred downlink backhaul path are unavailable or congested, they can
  • the used data transmission path, in actual application, the uplink or downlink (UL/DL) target backhaul path and UL/DL alternative backhaul path can be configured by the CU according to the radio bearer of the UE.
  • the donor IAB node when the donor IAB node adopts the path of DU1 ⁇ IAB1 ⁇ IAB5 for downlink transmission to UE1, the donor IAB can obtain the LBT results of IAB1 and IAB2. If the LBT result of IAB1 is LBT failure , and the LBT result of IAB2 is LBT success, then the donor IAB node can determine that it needs to select the path of DU1 ⁇ IAB2 ⁇ IAB5 for downlink transmission to UE1. That is, rerouting between the same access IAB node and the unified host IAB-DU is performed.
  • the alternative return paths include: DU1 ⁇ IAB2 ⁇ IAB5, DU1 ⁇ IAB2 ⁇ IAB6, At this time, the donor IAB can obtain the LBT results from IAB1 to IAB5, the LBT results from IAB2 to IAB5, and the LBT results from IAB2 to IAB6.
  • the donor IAB node can determine that it needs to select the path of DU1 ⁇ IAB2 ⁇ IAB6 for downlink transmission to UE3. That is, rerouting between the same host IAB node and different access IAB nodes is performed.
  • FIG. 3c Another example: as shown in Figure 3c, during the process of downlink transmission to UE4 using the path of CU1 ⁇ DU1 ⁇ IAB1 ⁇ IAB5, if the LBT result of at least one node among MN donor IAB, IAB1 and IAB5 is LBT failure Next, CU1 can switch the backhaul path to CU1 ⁇ DU2 ⁇ IAB2 ⁇ IAB6. That is, rerouting between different host IAB-DUs and different access IAB nodes is performed.
  • the first IAB node receives the LBT result sent by the second IAB node to determine the BAP routing for data forwarding based on this, and can focus on some or a certain IAB node for BAP routing to reduce the number of other IAB nodes of complexity.
  • LBT may be initiated by the sending or forwarding IAB node in the backhaul path, so as to obtain the LBT result of the IAB node.
  • the IAB node can determine that other return paths need to be selected; correspondingly, if the LBT results detected by all IAB nodes in the return path are all LBT If successful, it can be determined that no other return path needs to be selected.
  • the LBT results detected by the IAB node can be uniformly transmitted to the CU node, so that after the CU node counts the LBT results of each IAB node in the return path, the statistically obtained LBT results are forwarded to the One or some IAB nodes.
  • the LBT performed by the first IAB node may include at least one of the following:
  • Omni-directional LBT When the sending IAB node executes the LBT program, it monitors the target channel omni-directionally, and compares the received power on the target channel with the threshold of power detection (energy detection) to determine whether the channel is occupied, and in the LBT program At the end, determine whether the target channel is available;
  • energy detection energy detection
  • the sending IAB node executes the LBT program, it monitors the target channel in the target transmission direction, and compares the received power in the target channel in the target transmission direction with the threshold of energy detection to determine whether the channel is occupied. And at the end of the LBT procedure it is determined whether the target channel is available in the target transmission direction; wherein the same channel may be available in one direction but not in the other direction.
  • the first IAB node performs LBT to obtain LBT results, including:
  • the first IAB node performs LBT in the target space direction to obtain an LBT result in the target space direction;
  • the first IAB node performs LBT in the candidate space direction to obtain the LBT result of the candidate space direction;
  • the target spatial direction and the candidate spatial direction correspond to beams in different paths, or, the target spatial direction and the candidate spatial direction correspond to different beams in the same path.
  • the above-mentioned target spatial direction and the alternative spatial direction correspond to beams in different paths, which can be understood as: the beam corresponding to the target spatial direction is a beam in the target return path, and the alternative The beams corresponding to the spatial directions are the beams in the alternative backhaul path.
  • the first IAB node determines the BAP route selection for data forwarding according to the LBT result, including:
  • the first IAB node selects to use the target backhaul path corresponding to the target space direction when the LBT of the target space direction is successful or the failure ratio of the LBT of the target space direction is lower than a first ratio threshold send data;
  • the LBT of the first IAB node in the target space direction fails or the failure ratio of the LBT in the target space direction is greater than or equal to the first ratio threshold, and the first IAB node is in the alternative space If the LBT of the direction is successful or the failure ratio of the LBT of the candidate space direction is lower than a second ratio threshold, select to use the candidate space direction to send data.
  • the first ratio threshold and the second ratio threshold may be the same or different, and may be adjusted according to actual application scenarios and service requirements, and are not specifically limited here.
  • IAB1 can control the beam in the target space direction corresponding to IAB1 ⁇ IAB2
  • IAB1 ⁇ IAB3 ⁇ CU IAB1 ⁇ IAB3 ⁇ CU
  • the target backhaul path can be used for data transmission or forwarding; if the LBT failure or failure rate of the target space direction is higher than a threshold, but the alternative space direction When the LBT success or LBT failure probability is lower than a threshold, an alternative backhaul path can be used for data transmission or forwarding.
  • the sending/forwarding IAB node can be in the direction of the next-hop IAB node of the target backhaul path (that is, the direction of the target space) and the direction of the next-hop IAB node of the alternative backhaul path (that is, the direction of the alternate space). Or perform LBT at the same time, so as to select a return path for data transmission or forwarding, which can improve the directionality of data return.
  • the above-mentioned target spatial direction and the candidate spatial direction correspond to different beams in the same path, which can be understood as: the beam corresponding to the target spatial direction and the beam corresponding to the candidate spatial direction are the target backhaul different beams in the path or alternative backhaul paths.
  • the target spatial direction is the spatial direction corresponding to the target beam
  • the candidate spatial direction is the spatial direction corresponding to the candidate beam
  • the target beam and the candidate beam are different beams in the same backhaul path.
  • the first IAB node determines the BAP routing for data forwarding according to the LBT result, including:
  • the first IAB node selects to use the target beam corresponding to the target space direction to send data when the LBT in the target space direction is successful or the failure ratio of the LBT in the target space direction is lower than a first ratio threshold ;
  • the LBT of the first IAB node in the target space direction fails or the failure ratio of the LBT in the target space direction is greater than or equal to the first ratio threshold, and the first IAB node is in the alternative space If the LBT in one direction is successful or the failure ratio of the LBT in the candidate space direction is lower than a second ratio threshold, choose to use the candidate beam corresponding to the candidate space direction to send data.
  • IAB1 can control the target space between IAB1 ⁇ IAB2 Directional LBT detection is performed on the beams in the directional and alternative spatial directions separately.
  • the target beam can be used for data transmission or forwarding; if the LBT failure or failure rate in the target beam direction is higher than a threshold, but the LBT in the alternative beam direction On success, the alternate beam can be used for data transmission or forwarding.
  • the LBT result may further include: beam parameters of the target spatial direction and the candidate spatial direction At least one of the beam parameters of the direction.
  • the above-mentioned beam parameters may include a beam identifier
  • the beam identifier includes at least one of the following: synchronization signal/physical broadcast channel signal block (or synchronization signal block) (Synchronization Signal and PBCH block, SSB) beam sequence number, channel state information reference Signal (Channel State Information-Reference Signal, CSI-RS) beam number or sounding reference signal (Sounding Reference Signal, SRS) beam number, etc., are not exhaustive here.
  • the above beam parameters may also include: node identifiers of the initial IAB node, destination IAB node, and intermediate IAB node in the backhaul path, so as to select the required backhaul path accordingly.
  • beams in different directions can be selected from the same path for data transmission, which can also improve the directivity of data transmission.
  • Step 202 the first IAB node determines the BAP route selection for data forwarding according to the LBT result.
  • determining the BAP route selection for data forwarding according to the LBT result may include: determining which return path to select for data return according to the LBT result. For example: when the LBT result indicates that the target return path is unavailable and an alternative return path is available, select an alternative return path for data return; when the LBT result indicates that the target return path is available Under , select the target return path for data return.
  • the above target return path is unavailable, which may include at least one of the following situations:
  • the LBT result of at least one IAB node on the target backhaul path is failure
  • the LBT failure ratio of at least one IAB node on the target backhaul path is greater than or equal to a first preset threshold
  • the number of LBT failures of at least one IAB node on the target backhaul path is greater than or equal to a second preset threshold.
  • the above alternative return paths are available and may include at least one of the following:
  • the LBT failure ratio of any IAB node on the alternative backhaul path is lower than a third preset threshold
  • the number of LBT failures of any IAB node on the alternative backhaul path is lower than a fourth preset threshold.
  • the above target return path is available, which may include at least one of the following situations:
  • the LBT failure ratio of any IAB node on the target backhaul path is lower than a fifth preset threshold
  • the number of LBT failures of any IAB node on the target backhaul path is lower than a sixth preset threshold.
  • the first preset threshold, the second preset threshold, the third preset threshold, the fourth preset threshold, the fifth preset threshold and the sixth preset threshold are used to determine the BAP routing selection of data return.
  • the specific value of the threshold can be determined according to the type of business and the actual application scenario, and different threshold values can be set for different backhaul paths, for example: the first preset threshold is greater than the third preset threshold, to preferentially reside in On the return path of the target, there is no specific limitation here.
  • the first IAB node may choose to use the alternative backhaul path to send data when the target backhaul path is unavailable and the alternative backhaul path is available; , choose to use the target backhaul path to send data.
  • the target backhaul path can be used first for data transmission, and only when the target backhaul path is unavailable or congested, the alternative backhaul path will be used for data transmission. transmission.
  • the LBT result may include at least one of the following:
  • the LBT result of the DU in at least one IAB node on the candidate return path is not limited.
  • the LBT result of the above MT can be used to indicate: the availability or congestion of the uplink channel between the MT of the IAB node and the DU of the parent IAB node.
  • the LBT result of the above DU can be used to indicate: the availability or congestion of the downlink channel between the DU of the IAB node and the MT of the child IAB node.
  • the availability or congestion of the uplink and downlink channels of the IAB node in the target backhaul path, and/or the availability or congestion of the uplink and downlink channels of the IAB node in the alternative backhaul path jointly determine the The uplink and downlink return paths for data return can improve the reliability of the selected return path.
  • the LBT result may include at least one of the following:
  • the time lengths of the second preset time, the third preset time and the fourth preset time may be the same.
  • the result of LBT failure may include: the current LBT failure, or, the ratio of LBT failure is greater than or equal to the preset first preset threshold, or, the ratio of LBT success is lower than the seventh preset threshold.
  • LBT can include at least one of the following types:
  • Type 1 For load based equipment (LBE), physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) and physical downlink shared channel (Physical downlink shared channel, PDSCH) can be used to send;
  • PUSCH Physical Uplink Shared Channel
  • PDSCH Physical downlink shared channel
  • Type 2 For gNB or UE, the fourth type (Category 4) LBT can be used to initiate a channel occupation time (Channel Occupation Time, COT), and gNB and UE can share this COT for data transmission.
  • COT Channel Occupation Time
  • the ratio of success or failure of the above-mentioned LBT corresponding to CAPC, or the number of times of success or failure of LBT corresponding to CAPC within the fourth preset time can be understood as: when performing Category 4 type LBT, the transmitter (UE or gNB) according to different service types, can determine different channel priority (channel access priority class, CAPC), used to determine the LBT backoff (backoff) window length, in a contention window (contention window, which includes a fixed time length and the length of backoff) to determine whether the LBT was successful.
  • CAPC channel access priority class
  • LCH Logical Channel
  • Type 3 For Frame Based Equipment (FBE), the second type (Category 2) LBT can be implemented, and the LBT with a shorter contention window can be performed.
  • FBE Frame Based Equipment
  • the above consistent (Consistent) LBT failure information can be understood as: multiple LBT failures occur within a period of time, which can be used to determine that the current unlicensed frequency band is unavailable.
  • the above-mentioned LBT result may specifically be the result of LBT failure, that is, only obtain the LBT result of the IAB node whose LBT fails in the backhaul path. At this time, if the result of LBT failure is not obtained, it means that the backhaul path is available.
  • the above LBT result may also include only the result of LBT success, or both the result of LBT success and the result of failure, it is only necessary to determine whether there is an IAB node with LBT failure in the corresponding return path according to the LBT result, No specific limitation is made here.
  • the number or proportion of data transmission errors can also be understood as data transmission.
  • conflict which can also be understood as a situation of the LBT result, in other words, the LBT result also includes: the proportion of data transmission errors occurring in the first IAB node or data transmission occurring within the first preset time number of errors.
  • the first preset time can also be set according to business requirements and application scenarios, which is not specifically limited here.
  • rerouting can be performed directly at the first IAB node; or, the BAP routing for data forwarding can be sent to other IAB nodes to indicate The other IAB nodes choose whether to perform rerouting accordingly.
  • the BAP routing selection for data forwarding is different from the current backhaul path
  • rerouting can be performed directly to switch to a channel that is available or unused
  • the determined BAP routing for data forwarding can be forwarded to other IAB nodes with at least two next-hop IAB nodes to indicate The other IAB nodes perform rerouting.
  • the method also includes:
  • the first IAB node receives the LBT result or rerouting indication information sent by the second IAB node;
  • the first IAB node forwards the LBT result or rerouting indication information of the second IAB node to a third IAB node;
  • the third IAB node is a parent IAB node, host IAB node or child IAB node of the first IAB node in the target backhaul path.
  • the first IAB node may also forward the LBT result or rerouting instruction information of the second IAB node to the third IAB node, wherein, taking the downlink transmission as an example, the second IAB node may be the The child IAB node, the third IAB node may be the parent IAB node or host IAB node of the first IAB node.
  • IAB2 can forward the LBT results detected by IAB6 and IAB5 To the donor IAB node, so that the donor IAB node can determine the BAP route selection for data forwarding; or, IAB2 can also determine the need for rerouting based on the LBT results detected by IAB6 and IAB5, and forward the rerouting instruction to the donor IAB node , so that the donor IAB node can directly perform rerouting according to the rerouting instruction.
  • the second IAB node may also include the parent IAB node or host IAB node of the first IAB node, and the third IAB node may also include the child IAB node of the first IAB node; and, in the uplink transmission, The second IAB node may include a parent IAB node or host IAB node of the first IAB node, and the third IAB node may include a child IAB node of the first IAB node, which will not be repeated here.
  • the adjacent IAB node receives the The received rerouting indication is used to determine whether to perform rerouting.
  • the method also includes:
  • the first IAB node generates first indication information according to the LBT result, where the first indication information is used to indicate the LBT result or instruct a third IAB node to perform rerouting;
  • the first IAB node sends the first indication information to the third IAB node;
  • the first IAB node and the third IAB node are adjacent nodes on the target backhaul path or on the alternative backhaul path.
  • the above-mentioned first IAB node sending the first indication information to the third IAB node may include: when applied to uplink backhaul, the first IAB node may notify the LBT result of its MT to Child IAB node; when applied to downlink backhaul, the first IAB node can notify the parent IAB node of the LBT result of its DU.
  • the above-mentioned first indication information is used to instruct the third IAB node to perform rerouting, which can be understood as: when the first IAB node selects a backhaul path different from the current backhaul path according to the obtained LBT structure , to generate the first indication information.
  • the first indication information may include the following two situations:
  • the first indication information is used to indicate the LBT result.
  • the third IAB node that receives the first indication information can obtain the LBT result from the first indication information, and based on the LBT result Determine whether to perform rerouting, or continue to forward the LBT result to other adjacent IAB nodes, etc.
  • Case 2 The first indication information is used to instruct the third IAB node to perform rerouting.
  • the third IAB node receiving the first indication information may directly perform rerouting based on the indication information.
  • the LBT result of the first IAB node or the rerouting instruction information obtained according to the LBT result can also be transmitted between adjacent IAB nodes on the backhaul path, so as to perform the rerouting on the appropriate third IAB node. Routing or performing rerouting.
  • the first indication information is used to instruct the third IAB node to perform rerouting, including:
  • the first indication information is used to instruct the third IAB node to perform a first handover, the first handover is to switch the data with the first IAB node as the next hop node from the target backhaul path to an alternative return path;
  • the method further includes:
  • the first IAB node sends second indication information to the third IAB node, where the second indication information is used to instruct the third IAB node to perform a second handover, and the second handover is to use the
  • the data whose first IAB node is the next hop node is switched from the candidate backhaul path to the target backhaul path.
  • the above-mentioned second handover can be understood as a reverse handover process of the above-mentioned first handover, so as to switch to the preferred target backhaul path for data transmission when the preferred target backhaul path becomes available again.
  • the utilization rate of the target backhaul path can be improved, and the occupation time of the alternative backhaul path can be shortened.
  • the first indication information and the second indication information respectively include at least one of the following:
  • the BAP address of the affected destination IAB node is the BAP address of the affected destination IAB node.
  • the backhaul path affected can be understood as: in the rerouting process, the current backhaul path, and the destination backhaul path of rerouting, and the identifier of the backhaul path can be the link identifier of BAP (BAP routing ID) or other identifiers that can distinguish the return path.
  • BAP BAP routing ID
  • the affected destination IAB node may include at least one of the following: an IAB node performing rerouting, an IAB node on the current backhaul path, and an IAB node on the rerouting destination backhaul path.
  • the third IAB node may also forward the received first indication information to other adjacent IAB nodes, such as the next-hop IAB node, which will not be repeated here.
  • the first IAB node obtains the LBT result; and determines the BAP routing selection for data forwarding according to the LBT result.
  • the IAB network can determine whether there is an LBT failure or a high probability of LBT failure on the target backhaul path and/or the alternative backhaul path according to the LBT result, and then backhaul from the target Selecting a return path with a low probability of LBT success or LBT failure among the path and the candidate return path is used as the return path for data transmission, which can reduce transmission delay.
  • FIG. 5 is a flow chart of a rerouting method provided by the embodiment of the present application.
  • the execution subject of the rerouting method may be the third IAB node.
  • the rerouting method may include the following steps:
  • Step 501 the third IAB node acquires first indication information, where the first indication information is used to indicate the LBT result or instruct the third IAB node to perform rerouting.
  • Step 502 the third IAB node performs rerouting according to the first indication information.
  • the above-mentioned third IAB node is the same as the third IAB node in the method embodiment shown in Figure 2, and similarly, the above-mentioned first indication information may be sent by the first IAB node in the method embodiment shown in Figure 2
  • the indication information, and the first indication information in this embodiment has the same meaning and function as the first indication information in the method embodiment shown in FIG. 2 , and will not be repeated here.
  • the rerouting performed by the third IAB node according to the first indication information may include the following two situations:
  • the first indication information is used to indicate the LBT result.
  • the third IAB node may obtain the LBT result from the first indication information, and determine whether to perform rerouting based on the LBT result.
  • Case 2 The first indication information is used to instruct the third IAB node to perform rerouting. At this time, the third IAB node may directly perform rerouting according to the indication of the first indication information.
  • the first indication information includes at least one of the following:
  • the above LBT result or rerouting configuration information sent by the CU node can be understood as: the CU node can summarize or count the LBT results of each IAB node in the return path, so as to forward the LBT summary or statistical results to The third IAB node, so that the third IAB node determines whether to perform rerouting based on the LBT result; or, when the CU node determines to configure the third IAB node for rerouting according to the LBT summary or statistical results, it generates rerouting configuration information to Make the third IAB node perform rerouting according to the rerouting configuration information.
  • the third IAB node is a parent IAB node, host IAB node or child IAB node of the first IAB node in the target backhaul path.
  • the LBT results include at least one of the following:
  • the LBT result of the DU in at least one IAB node on the target return path
  • the LBT result of the DU in at least one IAB node on the candidate return path is not limited.
  • the acquisition of the first indication information by the third IAB node includes:
  • the third IAB node receives the LBT result of the second IAB node forwarded by the first IAB node
  • the second IAB node is a parent IAB node, host IAB node or child IAB node of the first IAB node in the target backhaul path.
  • the third IAB node performs rerouting according to the first indication information, including:
  • the third IAB node switches the data with the first IAB node as the next hop node from the target backhaul path to an alternative backhaul path according to the first indication information
  • the method further includes:
  • the third IAB node switches the data using the first IAB node as a next-hop node from the candidate backhaul path to the target backhaul path according to the second indication information.
  • the first indication information and the second indication information respectively include at least one of the following:
  • the BAP address of the affected destination IAB node is the BAP address of the affected destination IAB node.
  • the third IAB node can perform route selection and perform rerouting according to the LBT result indicated by the received first indication information, or directly perform rerouting according to the indication of the first indication information, as shown in Figure 2
  • the first IAB node generates the first indication information according to the obtained LBT result, and sends the first indication information to the third IAB node, which has the same beneficial effect and will not be repeated here.
  • FIG. 6 is a flowchart of a routing configuration method provided by the embodiment of the present application.
  • the execution subject of the routing configuration method may be the first target IAB node.
  • the routing configuration method may include the following steps :
  • Step 601 the first target IAB node receives target configuration information from the CU node, wherein the target configuration information is determined according to the LBT result related to the target backhaul path obtained by the CU node, and the target configuration information is used to configure the BAP routing selection for data forwarding of the first target IAB node, the target return path includes the first target IAB node.
  • the first target IAB node when the above-mentioned first target IAB node receives the target configuration information, it may reroute according to the configuration of the target configuration information, and the first target IAB node may be capable of switching from the current backhaul path To the IAB node of the destination backhaul path in the rerouting configuration, for example: as shown in Figure 3a, the target backhaul path is: donor IAB-DU1 ⁇ IAB1 ⁇ IAB5 ⁇ UE1, and the alternative backhaul path is: donor IAB-DU1 ⁇ IAB2 ⁇ IAB5 ⁇ UE1, then the first target IAB node may be a donor IAB node.
  • the routing configuration method shown in Figure 6 also includes:
  • the first target IAB node sends a first LBT result to the CU node, where the first LBT result is the LBT result of the first target IAB node in the target return path;
  • the LBT result related to the target return path includes the first LBT result.
  • each IAB node in the target backhaul path may respectively transmit its own LBT result to the CU node.
  • each IAB node in the alternative backhaul path may also transmit its own LBT result to the CU node.
  • the LBT result related to the target return path includes at least one of the following:
  • each IAB node in the target backhaul path or the alternative backhaul path can report its own LBT result to the CU node, or an IAB node can report the LBT result to the target backhaul path or the alternative backhaul path
  • the CU node determines whether rerouting is required according to the LBT result of each IAB node in the target backhaul path or the alternative backhaul path, and When it is determined that rerouting is required, rerouting is configured to the first target IAB node in the current backhaul path.
  • the above LBT result may also include the LBT result of the first IAB node in the target space direction, and the LBT result of the first IAB node in the candidate space direction, the target space direction and the candidate space direction
  • the spatial directions have the same meanings as the target spatial direction and the candidate spatial directions in the method embodiment shown in FIG. 2 , and details are not repeated here.
  • the CU can uniformly configure the rerouting of the first target IAB node in the return path according to the LBT result related to the target return path, which can avoid the Other IAB nodes perform route selection or rerouting respectively, which can avoid repeated calculation and repeated data transmission between different IAB nodes, thereby simplifying the calculation process and data transmission process of rerouting.
  • FIG. 7 is a flow chart of another routing configuration method provided by the embodiment of the present application.
  • the difference between the routing configuration method shown in FIG. 7 and the routing configuration method shown in FIG. 6 is that, as shown in FIG. 7
  • the execution subject of the routing configuration method may be a CU node, and the execution main figure of the routing configuration method as shown in Figure 6 is the first target IAB node, as shown in Figure 7, this other routing configuration method may include the following steps:
  • Step 701 the CU node receives the LBT result related to the target return path from the IAB node in the target return path.
  • Step 702 the CU node sends target configuration information to the first target IAB node according to the LBT result related to the target return path, wherein the target configuration information is used to configure data forwarding of the first target IAB node BAP route selection, the target backhaul path includes the first target IAB node.
  • the LBT result related to the target return path includes at least one of the following:
  • the LBT result of the first IAB node in the target direction and the LBT result of the first IAB node in the candidate direction, wherein the target direction and the candidate direction correspond to beams in different paths, or, the The target direction and the candidate direction correspond to different beams in the same path;
  • the routing configuration method provided in the embodiment of the present application corresponds to the routing configuration method in the method embodiment shown in FIG. 6 , and can achieve the same beneficial effects. To avoid repetition, details are not repeated here.
  • the routing method provided in the embodiment of the present application may be executed by a routing device, or a control module in the routing device for executing the routing method.
  • the routing selection method performed by the routing device is taken as an example to describe the routing device provided in the embodiment of the present application.
  • FIG. 8 is a structural diagram of a routing device provided by an embodiment of the present application.
  • the routing device may be used for the first IAB node.
  • the routing device 800 may include:
  • the first obtaining module 801 is used to obtain the LBT result
  • the first determining module 802 is configured to determine the BAP route selection for data forwarding according to the LBT result.
  • the first obtaining module 801 is specifically configured to perform at least one of the following:
  • the second IAB node is the parent IAB node, host IAB node or child IAB node of the first IAB node in the target backhaul path;
  • the first acquisition module 801 includes:
  • the first detection unit is configured to perform LBT in the target space direction, so as to obtain the LBT result of the target space direction;
  • the second detection unit is used for the first IAB node to perform LBT in the candidate space direction, so as to obtain the LBT result of the candidate space direction;
  • the target spatial direction and the candidate spatial direction correspond to beams in different paths, or, the target spatial direction and the candidate spatial direction correspond to different beams in the same path.
  • the first determining module 802 includes:
  • the first selection unit is configured to select and use the target feedback corresponding to the target space direction when the LBT of the target space direction is successful or the failure ratio of the LBT of the target space direction is lower than a first ratio threshold path or target beam to send data;
  • the second selection unit is configured to fail the LBT in the target space direction or the failure ratio of the LBT in the target space direction is greater than or equal to the first ratio threshold, and the first IAB node is in the alternative If the LBT in the space direction is successful or the failure ratio of the LBT in the candidate space direction is lower than the second ratio threshold, select to use the candidate backhaul path or the candidate beam corresponding to the candidate space direction to send data.
  • the LBT result further includes: at least one of beam parameters in the target spatial direction and beam parameters in the candidate spatial direction.
  • the LBT result includes at least one of the following:
  • the LBT result of the DU in at least one IAB node on the target return path
  • the LBT result of the DU in at least one IAB node on the candidate return path is not limited.
  • the LBT result includes at least one of the following:
  • the first determination module 802 is specifically used for:
  • the LBT result of at least one IAB node on the target backhaul path is failure
  • the LBT failure ratio of at least one IAB node on the target backhaul path is greater than or equal to a first preset threshold
  • the number of LBT failures of at least one IAB node on the target backhaul path is greater than or equal to a second preset threshold
  • the LBT failure ratio of any IAB node on the alternative backhaul path is lower than a third preset threshold
  • the number of LBT failures of any IAB node on the alternative backhaul path is lower than a fourth preset threshold.
  • the first determination module 802 is specifically used for:
  • the LBT failure ratio of any IAB node on the target backhaul path is lower than a fifth preset threshold
  • the number of LBT failures of any IAB node on the target backhaul path is lower than a sixth preset threshold.
  • the LBT result further includes: the proportion of data transmission errors occurring on the first IAB node or the number of data transmission errors occurring within a first preset time.
  • the routing device 800 also includes:
  • the first receiving module is configured to receive the LBT result or rerouting indication information sent by the second IAB node;
  • a first forwarding module configured to forward the LBT result or rerouting indication information of the second IAB node to a third IAB node;
  • the third IAB node is a parent IAB node, host IAB node or child IAB node of the first IAB node in the target backhaul path.
  • the routing device 800 also includes:
  • a generating module configured to generate first indication information according to the LBT result, where the first indication information is used to indicate the LBT result or instruct a third IAB node to perform rerouting;
  • a first sending module configured to send the first indication information to the third IAB node
  • the first IAB node and the third IAB node are adjacent nodes on the target backhaul path or on the alternative backhaul path.
  • the first indication information is used to instruct the third IAB node to perform rerouting, including:
  • the first indication information is used to instruct the third IAB node to perform a first handover, the first handover is to switch the data with the first IAB node as the next hop node from the target backhaul path to an alternative return path;
  • Routing device 800 also includes:
  • a fourth sending module configured to send second indication information to the third IAB node, where the second indication information is used to instruct the third IAB node to perform a second handover, and the second handover is to use
  • the data for which the first IAB node is a next-hop node is switched from the candidate backhaul path to the target backhaul path.
  • the first indication information and the second indication information respectively include at least one of the following:
  • the BAP address of the affected destination IAB node is the BAP address of the affected destination IAB node.
  • the routing device 800 provided in the embodiment of the present application can execute the steps performed by the first IAB node in the routing method embodiment shown in FIG. 2 , and can achieve the same beneficial effects. To avoid repetition, details are not repeated here.
  • the rerouting method provided in the embodiment of the present application may be executed by a rerouting device, or a control module in the rerouting device for executing the rerouting method.
  • a rerouting device or a control module in the rerouting device for executing the rerouting method.
  • the rerouting device provided in the embodiment of the present application is described.
  • FIG. 9 is a structural diagram of a rerouting device provided by an embodiment of the present application.
  • the rerouting device may be used for a third IAB node.
  • the rerouting device 900 may include:
  • the second acquiring module 901 is configured to acquire first indication information, where the first indication information is used to indicate the LBT result or instruct the third IAB node to perform rerouting;
  • a rerouting module 902 configured to perform rerouting according to the first indication information.
  • the first indication information includes at least one of the following:
  • the third IAB node is a parent IAB node, host IAB node, or child IAB node of the first IAB node in the target backhaul path.
  • the LBT result includes at least one of the following:
  • the LBT result of the DU in at least one IAB node on the target return path
  • the LBT result of the DU in at least one IAB node on the candidate return path is not limited.
  • the second acquisition module 901 is specifically used for:
  • the second IAB node is a parent IAB node, host IAB node or child IAB node of the first IAB node in the target backhaul path.
  • the rerouting module 902 is specifically used for:
  • the rerouting device 900 also includes:
  • a second receiving module configured to receive second indication information from the first IAB node
  • a switching module configured to switch the data with the first IAB node as the next hop node from the candidate backhaul path to the target backhaul path according to the second indication information.
  • the first indication information and the second indication information respectively include at least one of the following:
  • the BAP address of the affected destination IAB node is the BAP address of the affected destination IAB node.
  • the rerouting device 900 provided in the embodiment of the present application can perform various steps performed by the third IAB node in the rerouting method embodiment shown in FIG. 5 , and can achieve the same beneficial effect.
  • the execution subject may be a routing configuration device, or a control module in the routing configuration device for executing the routing configuration method.
  • the routing configuration device performed by the routing configuration device is taken as an example to illustrate the routing configuration device provided in the embodiment of the present application.
  • FIG. 10 is a structural diagram of a routing configuration device provided by an embodiment of the present application.
  • the routing configuration device may be used for the first target IAB node.
  • the routing configuration device 1000 may include:
  • the third receiving module 1001 is configured to receive target configuration information from the CU node, wherein the target configuration information is determined according to the LBT result related to the target backhaul path acquired by the CU node, and the target configuration information is used to configure the BAP routing selection for data forwarding of the first target IAB node, the target return path includes the first target IAB node.
  • the routing configuration device 1000 also includes:
  • a second sending module configured to send a first LBT result to the CU node, where the first LBT result is the LBT result of the first target IAB node in the target return path;
  • the LBT result related to the target return path includes the first LBT result.
  • the target returns path-related LBT results, including at least one of the following:
  • the routing configuration device 1000 provided in the embodiment of the present application can execute the steps performed by the first target IAB node in the embodiment of the routing configuration method shown in FIG. .
  • the execution subject may be a routing configuration device, or a control module in the routing configuration device for executing the routing configuration method.
  • the routing configuration device performed by the routing configuration device is taken as an example to illustrate the routing configuration device provided in the embodiment of the present application.
  • FIG. 11 is a structural diagram of a routing configuration device provided in an embodiment of the present application.
  • the routing configuration device can be used for a CU node.
  • the routing configuration device 1100 may include:
  • the fourth receiving module 1101 is configured to receive the LBT result related to the target return path from the IAB node in the target return path;
  • the third sending module 1102 is configured to send target configuration information to the first target IAB node according to the LBT result related to the target return path, wherein the target configuration information is used to configure data of the first target IAB node For BAP routing selection for forwarding, the target return path includes the first target IAB node.
  • the target returns path-related LBT results, including at least one of the following:
  • the LBT result of the first IAB node in the target direction and the LBT result of the first IAB node in the candidate direction, wherein the target direction and the candidate direction correspond to beams in different paths, or, the The target direction and the candidate direction correspond to different beams in the same path;
  • the routing configuration device 1100 provided in the embodiment of the present application can execute the steps performed by the CU node in the routing configuration method embodiment shown in FIG. 7 , and can achieve the same beneficial effects. To avoid repetition, details are not repeated here.
  • the embodiment of the present application also provides a network side device 1200, including a processor 1201, a memory 1202, and programs or instructions stored in the memory 1202 and operable on the processor 1201.
  • a network side device 1200 including a processor 1201, a memory 1202, and programs or instructions stored in the memory 1202 and operable on the processor 1201.
  • the communication device 1200 is an IAB node or a CU node
  • the program or instruction is executed by the processor 1201
  • each process of the method embodiment shown in FIG. 2 , FIG. 5 , FIG. 6 or FIG. 7 is implemented, and can achieve The same technical effects are not repeated here to avoid repetition.
  • the embodiment of the present application also provides a network side device, including a processor and a communication interface.
  • the communication interface is used to acquire the LBT result
  • the processor is used to determine the BAP routing selection for data forwarding according to the LBT result.
  • the communication interface is used to acquire first indication information, where the first indication information is used to indicate the LBT result or instruct the third IAB node to perform rerouting, and the processor is configured to Rerouting is performed on the first indication information.
  • the communication interface is used to receive target configuration information from the CU node, wherein the target configuration information is determined according to the LBT result related to the target return path acquired by the CU node, and the target configuration information A BAP routing selection for configuring data forwarding of the first target IAB node, where the target return path includes the first target IAB node.
  • the communication interface is used to receive the LBT result related to the target return path from the IAB node in the target return path, and the communication interface is also used to transmit the LBT related to the target return path
  • target configuration information is sent to the first target IAB node, wherein the target configuration information is used to configure BAP routing for data forwarding of the first target IAB node, and the target return path includes the first target IAB node.
  • the network-side device embodiment corresponds to the method embodiment shown in FIG. 2, FIG. 5, FIG. 6 or FIG. , and can achieve the same technical effect.
  • the embodiment of the present application also provides a network side device.
  • the network device 1300 includes: an antenna 1301 , a radio frequency device 1302 , and a baseband device 1303 .
  • the antenna 1301 is connected to the radio frequency device 1302 .
  • the radio frequency device 1302 receives information through the antenna 1301, and sends the received information to the baseband device 1303 for processing.
  • the baseband device 1303 processes the information to be sent and sends it to the radio frequency device 1302
  • the radio frequency device 1302 processes the received information and sends it out through the antenna 1301 .
  • the above-mentioned frequency band processing device may be located in the baseband device 1303, and the method performed by the network side device in the above embodiment may be implemented in the baseband device 1303, and the baseband device 1303 includes a processor 1304 and a memory 1305.
  • the baseband device 1303 may include at least one baseband board, for example, a plurality of chips are arranged on the baseband board, as shown in FIG.
  • the baseband device 1303 may also include a network interface 1306, configured to exchange information with the radio frequency device 1302, such as a Common Public Radio Interface (Common Public Radio Interface, CPRI).
  • a network interface 1306, configured to exchange information with the radio frequency device 1302, such as a Common Public Radio Interface (Common Public Radio Interface, CPRI).
  • CPRI Common Public Radio Interface
  • the network-side device in this embodiment of the present invention further includes: instructions or programs stored in the memory 1305 and executable on the processor 1304, and the processor 1304 calls the instructions or programs in the memory 1305 to execute the instructions shown in FIG. 8 , FIG. 9 ,
  • the method executed by each module shown in FIG. 10 or FIG. 11 achieves the same technical effect. In order to avoid repetition, it is not repeated here.
  • the embodiment of the present application also provides a readable storage medium, on which programs or instructions are stored, and the storage medium may be volatile or nonvolatile, and the program or instructions are stored by the processor During execution, each process of the method embodiment shown in FIG. 2 , FIG. 5 , FIG. 6 or FIG. 7 can be realized, and the same technical effect can be achieved. To avoid repetition, details are not repeated here.
  • the processor is the processor in the terminal described in the foregoing embodiments.
  • the readable storage medium includes computer readable storage medium, such as computer read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk, etc.
  • the embodiment of the present application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run programs or instructions, as shown in Figure 2, Figure 5,
  • the processor is used to run programs or instructions, as shown in Figure 2, Figure 5,
  • FIG. 6 or FIG. 7 Each process of the method embodiment shown in FIG. 6 or FIG. 7 can achieve the same technical effect, and will not be repeated here to avoid repetition.
  • the chip mentioned in the embodiment of the present application may also be called a system-on-chip, a system-on-chip, a system-on-a-chip, or a system-on-a-chip.
  • the embodiment of the present application also provides a computer program product, the computer program product is stored in a non-volatile storage medium, and the computer program product is executed by at least one processor to realize the Or the various processes of the method embodiment shown in FIG. 7 can achieve the same technical effect, so in order to avoid repetition, details are not repeated here.
  • the term “comprising”, “comprising” or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, It also includes other elements not expressly listed, or elements inherent in the process, method, article, or device. Without further limitations, an element defined by the phrase “comprising a " does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising that element.
  • the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved. Functions are performed, for example, the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

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Abstract

本申请公开了一种路由选择、重路由及路由配置方法、自回传IAB节点和集中单元CU节点,属于通信技术领域,本申请实施例的路由选择方法包括:第一IAB节点获取会话前监听LBT结果;所述第一IAB节点根据所述LBT结果,确定数据转发的回传适配协议BAP路由选择。

Description

路由选择、重路由及路由配置方法、IAB节点和CU节点
相关申请的交叉引用
本申请主张在2021年07月02日在中国提交的中国专利申请No.202110750380.0的优先权,其全部内容通过引用包含于此。
技术领域
本申请属于通信技术领域,具体涉及一种路由选择、重路由及路由配置方法、自回传(Integrated Access and Backhaul,IAB)节点、集中单元(Centralized Unit,CU)节点及网络侧设备。
背景技术
在相关技术中,IAB网络中的发送/转发IAB节点可以通过双连接拥有两个或更多的可选下一跳IAB节点,当IAB网络运行在授权频段时,发送/转发IAB节点可以选择链路通信质量较好的下一跳IAB节点进行数据发送或转发;
但是,当IAB网络运行在非授权频段,并执行会话前监听(Listen Before Talk,LBT),此时,可能存在目标回传路径上发生LBT失败或LBT失败概率高,而备选回传路径上的LBT成功或失败概率低。这种情况下,并不允许重选回传路径,造成发送/转发节点需等待后续在目标回传路径上的LBT成功才能进行数据传输,增加了传输延时。
发明内容
本申请实施例提供一种路由选择、重路由及路由配置方法、IAB节点和CU节点,能够解决当IAB网络运行在非授权频段时,因不允许重选回传路径,而造成的增加了传输时延的问题。
第一方面,提供了一种路由选择方法,该方法包括:
第一IAB节点获取LBT结果;
所述第一IAB节点根据所述LBT结果,确定数据转发的回传适配协议 (Backhaul Adaptation Protocol,BAP)路由选择。
第二方面,提供了一种路由选择装置,用于第一IAB节点,所述路由选择装置包括:
第一获取模块,用于获取LBT结果;
第一确定模块,用于根据所述LBT结果,确定数据转发的BAP路由选择。
第三方面,提供了一种重路由方法,该方法包括:
第三IAB节点获取第一指示信息,其中,所述第一指示信息用于指示LBT结果或者指示所述第三IAB节点进行重路由;
所述第三IAB节点根据所述第一指示信息进行重路由。
第四方面,提供了一种重路由装置,用于第三IAB节点,所述重路由装置包括:
第二获取模块,用于获取第一指示信息,其中,所述第一指示信息用于指示LBT结果或者指示第三IAB节点进行重路由;
重路由模块,用于根据所述第一指示信息进行重路由。
第五方面,提供了一种路由配置方法,该方法包括:
第一目标IAB节点从CU节点接收目标配置信息,其中,所述目标配置信息根据所述CU节点获取的目标回传路径相关的LBT结果确定,且所述目标配置信息用于配置所述第一目标IAB节点的数据转发的BAP路由选择,所述目标回传路径包括所述第一目标IAB节点。
第六方面,提供了一种路由配置装置,用于第一目标IAB节点,所述路由配置装置包括:
第三接收模块,用于从CU节点接收目标配置信息,其中,所述目标配置信息根据所述CU节点获取的目标回传路径相关的LBT结果确定,且所述目标配置信息用于配置所述第一目标IAB节点的数据转发的BAP路由选择,所述目标回传路径包括所述第一目标IAB节点。
第七方面,提供了一种路由配置方法,该方法包括:
CU节点从目标回传路径中的IAB节点接收所述目标回传路径相关的LBT结果;
所述CU节点根据所述目标回传路径相关的LBT结果,向第一目标IAB节点发送目标配置信息,其中,所述目标配置信息用于配置所述第一目标IAB节点的数据转发的BAP路由选择,所述目标回传路径包括所述第一目标IAB节点。
第八方面,提供了一种路由配置装置,用于CU节点,所述路由配置装置包括:
第四接收模块,用于从目标回传路径中的IAB节点接收所述目标回传路径相关的LBT结果;
第三发送模块,用于根据所述目标回传路径相关的LBT结果,向第一目标IAB节点发送目标配置信息,其中,所述目标配置信息用于配置所述第一目标IAB节点的数据转发的BAP路由选择,所述目标回传路径包括所述第一目标IAB节点。
第九方面,提供了一种第一IAB节点,该第一IAB节点包括处理器、存储器及存储在所述存储器上并可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现如第一方面所述的方法的步骤。
第十方面,提供了一种第一IAB节点,包括处理器及通信接口,其中,所述通信接口用于获取LBT结果,所述处理器用于根据所述LBT结果,确定数据转发的BAP路由选择。
第十一方面,提供了一种第三IAB节点,该第三IAB节点包括处理器、存储器及存储在所述存储器上并可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现如第三方面所述的方法的步骤。
第十二方面,提供了一种第三IAB节点,包括处理器及通信接口,其中,所述通信接口用于获取第一指示信息,其中,所述第一指示信息用于指示LBT结果或者指示所述第三IAB节点进行重路由,所述处理器用于根据所述第一指示信息进行重路由。
第十三方面,提供了一种第一目标IAB节点,该第一目标IAB节点包括处理器、存储器及存储在所述存储器上并可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现如第五方面所述的方法的步骤。
第十四方面,提供了一种第一目标IAB节点,包括处理器及通信接口, 其中,所述通信接口用于从CU节点接收目标配置信息,其中,所述目标配置信息根据所述CU节点获取的目标回传路径相关的LBT结果确定,且所述目标配置信息用于配置所述第一目标IAB节点的数据转发的BAP路由选择,所述目标回传路径包括所述第一目标IAB节点。
第十五方面,提供了一种CU节点,该CU节点包括处理器、存储器及存储在所述存储器上并可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现如第七方面所述的方法的步骤。
第十六方面,提供了一种CU节点,包括处理器及通信接口,其中,所述通信接口用于从目标回传路径中的IAB节点接收所述目标回传路径相关的LBT结果,所述通信接口还用于根据所述目标回传路径相关的LBT结果,向第一目标IAB节点发送目标配置信息,其中,所述目标配置信息用于配置所述第一目标IAB节点的数据转发的BAP路由选择,所述目标回传路径包括所述第一目标IAB节点。
第十七方面,提供了一种可读存储介质,所述可读存储介质上存储程序或指令,所述程序或指令被处理器执行时实现如第一方面所述的方法的步骤,或者实现如第三方面所述的方法的步骤,或者实现如第五方面所述的方法的步骤,或者实现如第七方面所述的方法的步骤。
第十八方面,提供了一种芯片,所述芯片包括处理器和通信接口,所述通信接口和所述处理器耦合,所述处理器用于运行程序或指令,实现如第一方面所述的方法,或实现如第三方面所述的方法,或实现如第五方面所述的方法,或实现如第七方面所述的方法。
第十九方面,提供了一种计算机程序/程序产品,所述计算机程序/程序产品被存储在非易失的存储介质中,所述程序/程序产品被至少一个处理器执行以实现如第一方面所述的路由选择方法的步骤,或者实现如第三方面所述的重路由方法的步骤,或者实现如第五方面所述的路由配置方法的步骤,或者实现如第七方面所述的路由配置方法的步骤。
在本申请实施例中,第一IAB节点获取LBT结果;并根据所述LBT结果,确定数据转发的BAP路由选择。这样,即使IAB网络运行在非授权频段,也能够根据LBT结果确定目标回传路径和/或备选回传路径上是否存在生 LBT失败或LBT失败概率高的情况,并据此从目标回传路径和备选回传路径中选择LBT成功或LBT失败概率低的回传路径作为数据传输的回传路径,能够降低传输延时。
附图说明
图1a是本申请能够应用的一种IAB网络的结构图;
图1b是IAB系统的终端功能模块(Mobile Termination,MT)-分布式单元(Distributed Unit,DU)的结构图;
图2是本申请实施例提供的一种路由选择方法的流程图;
图3a是重路由过程的示意图之一;
图3b是重路由过程的示意图之二;
图3c是重路由过程的示意图之三;
图4a是基于空间方向性的重路由过程的示意图之一;
图4b是基于空间方向性的重路由过程的示意图之二;
图5是本申请实施例提供的一种重路由方法的流程图;
图6是本申请实施例提供的一种路由配置方法的流程图;
图7是本申请实施例提供的另一种路由配置方法的流程图;
图8是本申请实施例提供的一种路由选择装置的结构图;
图9是本申请实施例提供的一种重路由装置的结构图;
图10是本申请实施例提供的一种路由配置装置的结构图;
图11是本申请实施例提供的另一种路由配置装置的结构图;
图12是本申请实施例提供的一种网络侧设备的结构图;
图13是本申请实施例提供的另一种网络侧设备的结构图。
具体实施方式
下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行清楚描述,显然,所描述的实施例是本申请一部分实施例,而不是全部的实施例。基于本申请中的实施例,本领域普通技术人员所获得的所有其他实施例,都属于本申请保护的范围。
本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象,而不用于描述特定的顺序或先后次序。应该理解这样使用的术语在适当情况下可以互换,以便本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施,且“第一”、“第二”所区别的对象通常为一类,并不限定对象的个数,例如第一对象可以是一个,也可以是多个。此外,说明书以及权利要求中“和/或”表示所连接对象的至少其中之一,字符“/”一般表示前后关联对象是一种“或”的关系。
IAB系统是新空口(New Radio,NR)Rel-16正在制定标准的一项技术,通过引入IAB系统,可以解决接入点密集部署时,有线传输网部署不到位的情况。即在没有有线传输网络时,接入点可以依赖无线网络进行数据回传。而执行本申请实施例提供的一种路由选择方法的第一IAB节点,可以IAB系统中的任一IAB节点。
当NR运行在非授权频率时,在使用某一个信道(channel)进行发送前,发射机(用户设备(User Equipment,UE)或基站(gNB))应依据LBT的程序,对该信道进行侦测,以确定该信道是否可用。具体方法是:发射机测量在该信道上收到的功率,如果接收到的功率高于一个预设值(该预设值用来确定是否处于被占用状态),那么该信道会被确定为被占用状态。反之,该信道会被确定未被占用状态。
在相关技术中,当NR运行在非授权频率时,若目标信道被占用,则需要等待该信道上的业务完成后,使得该信道上的LBT成功时,才能够进行数据回传,也就是说,此时,即使备选路径上的信道未被占用,也不会切换至该备选路径上进行数据回传,从而在增加数据传输时延的同时,还造成备选路径上的资源被浪费掉了;而本申请提供的路由选择方式中,当NR运行在非授权频率时,若目标信道被占用,则可以选择切换至信道未被占用的备选回传路径上,这样,既可以缩短数据回传的时延,还可以提升资源的利用率。
图1a示出本申请实施例可应用的一种IAB系统的框图。如图1a所示,一个IAB系统中可以包括:接入IAB节点11(即Access IAB node)、转发IAB节点12(即Intermediate IAB node)和宿主IAB节点13(即Donor IAB node),其中,宿主IAB节点13可以与有线传输网连接。
如图1a和1b所示,除了宿主IAB节点13之外的其他IAB节点都可以包括DU和MT。依靠MT,一个接入点(即IAB node)可以找到一个上游接入点(即父IAB节点(parent IAB node)),并跟上游接入点的DU建立无线连接,该无线连接被称为回传链路(backhaul link)。在一个IAB节点建立完整的回传链路后,该IAB节点打开其DU功能,DU会提供小区服务,即DU可以为终端14提供接入服务一个自回传回路包含一个宿主IAB(donor IAB)节点,该donor IAB节点通过有线连接的方式与其他网络侧设备连接。
上述终端14也可以称作终端设备或者用户设备(User Equipment,UE),其可以是手机、平板电脑(Tablet Personal Computer)、膝上型电脑(Laptop Computer)或称为笔记本电脑、个人数字助理(Personal Digital Assistant,PDA)、掌上电脑、上网本、超级移动个人计算机(Ultra-Mobile Personal Computer,UMPC)、移动上网装置(Mobile Internet Device,MID)、可穿戴式设备(Wearable Device)或车载设备(Vehicle User Equipment,VUE)、行人终端(Pedestrian User Equipment,PUE)等终端侧设备,可穿戴式设备包括:智能手表、手环、耳机、眼镜等,在此不作具体限定。
另外,如图1b所示,在一个自回传回路中,所有的IAB节点的DU都连接到一个CU节点,由这一个节点通过F1应用(F1-AP)协议对DU进行配置。CU通过无线资源控制(Radio Resource Control,RRC)协议,对MT进行配置。
BAP协议层是IAB系统特有的协议层,每个IAB节点中的BAP实体都有一个地址,称为BAP地址,结合该地址和IAB-donor-CU分配的路径标识(PATH ID),可以用来对数据进行路由。
在应用中,该BAP协议层提供一部分功能如下:
一、路由功能1:将数据包从CU节点通过回传路径发送给UE或者是将数据包从UE经回传路径发送到CU节点;
二、路由功能2:BAP协议也提供F1-AP信息的路由功能,将来自CU节点的F1控制信息经回传路径发送给IAB-DU或将来自IAB-DU的F1控制信息经回传路径发送给CU节点;
三、服务质量(Quality of Service,QoS)控制信息的传输功能:BAP协 议层中定义了一些IAB网络中使用的BAP控制协议数据单元(Protocol Data Unit,PDU),用来做流量控制、回传无线链路失败的通知等。
一个BAP data PDU中,包含一个BAP头部(header),BAP header中包含BAP路由选择标识(routing ID),BAP routing ID包括一个目的IAB节点(下行传输中,目的IAB节点是接入IAB节点;在上行传输中,目的IAB节点是donor-DU节点)的BAP地址和到达目的IAB节点的路径。一个IAB节点根据PATH ID确定下一跳接收IAB节点(该下一跳接收IAB节点可以是中间IAB节点、donor-DU和接入IAB节点中的任一个)。
本申请实施例提供的路由选择方法用于根据LBT结果,从目标回传路径和备选回传路径中选择LBT成功或LBT成功概率更高的一个作为数据转发的BAP路由选择,这样,在当前回传路径发生无线链路失败或者拥塞时,可以被允许将数据转发到备选路径上的一个可以到达目标IAB节点的下一跳转发IAB节点,由该下一跳转发IAB节点把数据发送至目的IAB节点、CU或UE,可以缩短数据传输的时延,并提升资源利用率。
下面结合附图,通过一些实施例及其应用场景对本申请实施例提供的路由选择方法进行详细地说明。
请参阅图2,是本申请实施例提供的一种路由选择方法的流程图,该路由选择方法的执行主体可以是第一IAB节点,如图2所示,该路由选择方法可以包括以下步骤:
步骤201、第一IAB节点获取LBT结果。
在具体实施中,上述第一IAB节点可以是IAB系统中的除了目的IAB节点之外的任一IAB节点,例如:发送IAB节点、转发IAB节点、或者具有至少两个可选的下一跳IAB节点的发送/转发IAB节点等。
作为一种可选的实施方式,所述第一IAB节点获取LBT结果,包括以下至少一项:
所述第一IAB节点接收第二IAB节点发送的LBT结果,其中,所述第二IAB节点为所述第一IAB节点在目标回传路径中的父IAB节点、宿主IAB节点或子IAB节点;
所述第一IAB节点进行LBT,以得到LBT结果;
所述第一IAB节点接收CU节点发送的LBT结果。
在第一实施方式中,某一IAB节点的LBT结果可以传递至同一回传路径中的其他IAB节点。
在实际应用中,同一回传路径中的某一些IAB节点仅具有一个下一跳IAB节点,而另一些IAB节点可以具有多个可选的下一跳IAB节点,此时,具有多个可选的下一跳IAB节点的IAB节点可以获取其他IAB节点的LBT结果,以根据获取到的LBT结果确定选择哪一个下一跳IAB节点。
在具体实施中,第二IAB节点是第一IAB节点在目标回传路径中的父IAB节点、宿主IAB节点或子IAB节点可以包括:第一IAB节点是第二IAB节点在目标回传路径中的上一跳IAB节点,或者,第一IAB节点是第二IAB节点在目标回传路径中的下一跳IAB节点的高耸父IAB节点,或者,第二IAB节点是宿主IAB节点。
其中,第一IAB节点的上一跳IAB节点,可以表示为:第一IAB节点在上行传输中的子IAB节点,或者第一IAB节点在下行传输中的父IAB节点或宿主IAB节点;相应的,第一IAB节点的下一跳IAB节点,可以表示为:第一IAB节点在上行传输中的父IAB节点或宿主IAB节点,或者第一IAB节点在下行传输中的子IAB节点。为便于说明,本申请的以下实施例中,以下行传输为例进行解释和说明。
其中,目标回传路径可以包括:首选的上行回传路径和/或首选的下行回传路径,在具体实施中,第一IAB节点从第二IAB节点接收到的LBT结果可以包括:第二IAB节点至备选回传路径中的下一跳IAB节点的LBT结果,该备选回传路径表示:在首选的上行回传路径和/或首选的下行回传路径不可用或发生拥塞时,可以使用的数据传输路径,在实际应用中,可以由CU按UE的无线承载来配置上行或下行(UL/DL)目标回传路径和UL/DL备选回传路径。
例如:如图3a所示,在donor IAB节点采用:DU1→IAB1→IAB5的路径向UE1进行下行传输的过程中,donor IAB的可以获取IAB1和IAB2的LBT结果,若IAB1的LBT结果为LBT失败,且IAB2的LBT结果为LBT成功,则donor IAB节点可以确定需要选择DU1→IAB2→IAB5的路径向UE1进行 下行传输。即进行同一接入IAB节点和统一宿主IAB-DU之间的重路由。
再例如:如图3b所示,在donor IAB节点采用:DU1→IAB1→IAB5的路径向UE3进行下行传输的过程中,备选回传路径包括:DU1→IAB2→IAB5,DU1→IAB2→IAB6,此时donor IAB的可以获取IAB1至IAB5的LBT结果、IAB2至IAB5的LBT结果和IAB2至IAB6的LBT结果,当该IAB1的LBT结果为LBT失败,且IAB2至IAB6的LBT结果为LBT成功的情况下,donor IAB节点可以确定需要选择DU1→IAB2→IAB6的路径向UE3进行下行传输。即进行同一宿主IAB节点和不同接入IAB节点之间的重路由。
再例如:如图3c所示,采用:CU1→DU1→IAB1→IAB5的路径向UE4进行下行传输的过程中,若MN donor IAB、IAB1和IAB5中存在至少一个节点的LBT结果为LBT失败的情况下,CU1可以将回传路径切换至CU1→DU2→IAB2→IAB6。即进行不同宿主IAB-DU和不同接入IAB节点之间的重路由。
本实施方式中,第一IAB节点接收第二IAB节点发送的LBT结果,以据此确定数据转发的BAP路由选择,可以集中在某一些或者某一个IAB节点进行BAP路由选择,以减少其他IAB节点的复杂程度。
在第二种实施方式中,可以由回传路径中的发送或转发IAB节点发起LBT,以检测得到该IAB节点的LBT结果。
本实施方式中,若IAB节点检测到的LBT结果为LBT失败,则该IAB节点可以确定需要选取其他回传路径;相应的,若回传路径中的全部IAB节点检测到的LBT结果都是LBT成功,则可以确定不需要选取其他回传路径。
在第三种实施方式中,IAB节点检测得到的LBT结果可以统一传输至CU节点,以通过该CU节点对回传路径中各个IAB节点的LBT结果进行统计后,将统计得到的LBT结果转发至某一个或者某一些IAB节点。
在具体实施中,所述第一IAB节点进行的LBT可以包括以下至少一种:
全向LBT:即发送IAB节点在执行LBT程序时,全向监听目标信道,并把目标信道上的接收功率跟功率检测(energy detection)的门限进行比较,确定信道是否被占用,并在LBT程序结束时确定目标信道是否可用;
方向性LBT:发送IAB节点在执行LBT程序时,在目标传输方向上监 听目标信道,并把在目标信道中在目标传输方向上的接收功率跟energy detection的门限进行比较,确定信道是否被占用,并在LBT程序结束时确定目标信道在目标传输方向上是否可用;其中,同一信道可能在一个方向上可用,在另一个方向上不可用。
这样,对于方向性LBT,所述第一IAB节点进行LBT,以得到LBT结果,包括:
所述第一IAB节点在目标空间方向进行LBT,以得到所述目标空间方向的LBT结果;
所述第一IAB节点在备选空间方向进行LBT,以得到所述备选空间方向的LBT结果;
其中,所述目标空间方向与所述备选空间方向对应不同路径中的波束,或者,所述目标空间方向与所述备选空间方向对应同一路径中不同的波束。
在具体实施中,上述所述目标空间方向与所述备选空间方向对应不同路径中的波束,可以理解为:所述目标空间方向对应的波束为目标回传路径中的波束,所述备选空间方向对应的波束为备选回传路径中的波束。
此时,所述第一IAB节点根据所述LBT结果,确定数据转发的BAP路由选择,包括:
所述第一IAB节点在所述目标空间方向的LBT成功或者在所述目标空间方向的LBT的失败比例低于第一比例阈值的情况下,选择使用所述目标空间方向对应的目标回传路径发送数据;
所述第一IAB节点在所述目标空间方向的LBT失败或者在所述目标空间方向的LBT的失败比例大于或等于所述第一比例阈值,且所述第一IAB节点在所述备选空间方向的LBT成功或者在所述备选空间方向的LBT的失败比例低于第二比例阈值的情况下,选择使用所述备选空间方向发送数据。
上述第一比例阈值和第二比例阈值可以相同或者不同,且可以根据实际应用场景和业务需求进行调整,在此不作具体限定。
例如:如图4a所示,假设目标回传路径为:IAB1→IAB2→CU,且备选回传路径为:IAB1→IAB3→CU;则IAB1可以对IAB1→IAB2对应的目标空间方向上的波束进行方向性LBT检测,并对IAB1→IAB3对应的备选空间方 向上的波束进行方向性LBT检测。这样,若目标空间方向的LBT成功或失败率低于一个门限时,可以使用目标回传路径进行数据发送或转发;若目标空间方向的LBT失败或失败率高于一个门限,但是备选空间方向的LBT成功或LBT失败概率低于一个门限时,可以使用备选回传路径进行数据发送或转发。
本实施方式中,发送/转发IAB节点可以在目标回传路径的下一跳IAB节点方向(即目标空间方向)和备选回传路径的下一跳IAB节点方向(即备选空间方向)分别或同时进行LBT,以据此选择进行数据发送或转发的回传路径,可以提升数据回传的方向性。
另外,上述所述目标空间方向与所述备选空间方向对应同一路径中不同的波束,可以理解为:所述目标空间方向对应的波束和所述备选空间方向对应的波束分别为目标回传路径或备选回传路径中的不同波束。
假设所述目标空间方向为目标波束对应的空间方向,且所述备选空间方向为备选波束对应的空间方向,且该目标波束和备选波束为同一回传路径中的不同波束。
则所述第一IAB节点根据所述LBT结果,确定数据转发的BAP路由选择,包括:
所述第一IAB节点在所述目标空间方向的LBT成功或者在所述目标空间方向的LBT的失败比例低于第一比例阈值的情况下,选择使用所述目标空间方向对应的目标波束发送数据;
所述第一IAB节点在所述目标空间方向的LBT失败或者在所述目标空间方向的LBT的失败比例大于或等于所述第一比例阈值,且所述第一IAB节点在所述备选空间方向的LBT成功或者在所述备选空间方向的LBT的失败比例低于第二比例阈值的情况下,选择使用所述备选空间方向对应的备选波束发送数据。
例如:如图4b所示,假设某一回传路径为:IAB1→IAB2→CU,且IAB1→IAB2之间的信道包括两个不同方向的波束;则IAB1可以对IAB1→IAB2之间的目标空间方向和备选空间方向上的波束分别进行方向性LBT检测。这样,若目标波束方向的LBT成功或失败率低于一个门限时,可 以使用目标波束进行数据发送或转发;若目标波束方向的LBT失败或失败率高于一个门限,但是备选波束方向的LBT成功时,可以使用备选波束进行数据发送或转发。
在实施中,为了区分所述目标空间方向和所述备选空间方向分别对应的波束及其回传路径,所述LBT结果还可以包括:所述目标空间方向的波束参数和所述备选空间方向的波束参数中的至少一项。
其中,上述波束参数可以包括波束标识,该波束标识包括以下至少一项:同步信号/物理广播信道信号块(或同步信号块)(Synchronization Signal and PBCH block,SSB)波束序号、信道状态信息的参考信号(Channel State Information-Reference Signal,CSI-RS)波束序号或探测参考信号(Sounding Reference Signal,SRS)波束序号等,在此并不穷举。
当然,上述波束参数还可以包括:回传路径中的起始IAB节点、目的IAB节点和中间IAB节点等的节点标识,以据此选择所需的回传路径。
本实施方式中,可以根据方向性LBT从同一路径中选取不同方向的波束进行数据传输,其同样能够提升数据传输的方向性。
步骤202、所述第一IAB节点根据所述LBT结果,确定数据转发的BAP路由选择。
在具体实施中,上述根据所述LBT结果,确定数据转发的BAP路由选择,可以包括:根据所述LBT结果确定选择那一条回传路径进行数据回传。例如:在所述LBT结果表示目标回传路径不可用,且备选回传路径可用的情况下,选择备选回传路径进行数据回传;在所述LBT结果表示目标回传路径可用的情况下,选择目标回传路径进行数据回传。
其中,上述目标回传路径不可用,可以包括以下情况中的至少一种:
在所述目标回传路径上的至少一个IAB节点的LBT结果为失败;
在所述目标回传路径上的至少一个IAB节点的LBT失败的比例大于或等于第一预设门限;
在所述目标回传路径上的至少一个IAB节点的LBT失败的次数大于或等于第二预设门限。
上述备选回传路径可用,可以包括以下情况中的至少一种:
在所述备选回传路径上的没有IAB节点的LBT结果为失败;
在所述备选回传路径上的任一个IAB节点的LBT失败的比例低于第三预设门限;
在所述备选回传路径上的任一个IAB节点的LBT失败的次数低于第四预设门限。
相应的,上述目标回传路径可用,可以包括以下情况中的至少一种:
在所述目标回传路径上的没有IAB节点的LBT结果为失败;
在所述目标回传路径上的任意一个IAB节点的LBT失败的比例低于第五预设门限;
在所述目标回传路径上的任意一个IAB节点的LBT失败的次数低于第六预设门限。
上述第一预设门限、第二预设门限、第三预设门限、第四预设门限、第五预设门限以及第六预设门限,用于判断数据回传的BAP路由选择,这些预设门限的具体取值可以根据业务类型和实际应用场景确定,且对不同的回传路径可以设置不同的门限值,例如:第一预设门限大于第三预设门限,以优先驻留在目标回传路径上,在此不作具体限定。
本实施方式,第一IAB节点可以在目标回传路径不可用且备选回传路径可用的情况下,选择使用所述备选回传路径发送数据;并且可以在目标回传路径可用的情况下,选择使用所述目标回传路径发送数据,这样,可以首选采用目标回传路径进行数据传输,仅在目标回传路径不可用或发生拥塞等情况下,才会采用备选回传路径进行数据传输。
当然,在具体实施中,在当前驻留与备选回传路径的情况下,也可以在目标回传路径可用且备选回传路径不可用的情况下,选择使用所述目标回传路径发送数据,这样,可以降低重路由的频率。
作为一种可选的实施方式,所述LBT结果可以包括以下至少一项:
目标回传路径上至少一个IAB节点中MT的LBT结果;
所述目标回传路径上至少一个IAB节点中分布单元DU的LBT结果;
备选回传路径上至少一个IAB节点中MT的LBT结果;
所述备选回传路径上至少一个IAB节点中DU的LBT结果。
上述MT的LBT结果可以用于表示:IAB节点的MT与父IAB节点的DU之间的上行信道的可用性或拥塞情况等。
上述DU的LBT结果可以用于表示:IAB节点的DU与子IAB节点的MT之间的下行信道的可用性或拥塞情况等。
本实施方式中,可以根据目标回传路径中的IAB节点的上下行信道的可用性或拥塞情况,和/或备选回传路径中的IAB节点的上下行信道的可用性或拥塞情况,共同确定进行数据回传的上下行回传路径,能够提升所述选择的回传路径的可靠性。
在此基础上,所述LBT结果可以包括以下至少一项:
当前LBT失败或失败;
LBT成功或失败的比例,或者,LBT在第二预设时间内成功或失败的次数;
按与LBT类型对应的LBT成功或失败的比例,或者,与LBT类型对应的LBT在第三预设时间内成功或失败的次数;
与CAPC对应的LBT成功或失败的比例,或者,与CAPC对应的LBT在第四预设时间内成功或失败的次数;
一致性(Consistent)LBT失败信息。
在具体实施中,上述第二预设时间、第三预设时间和第四预设时间的时间长度可以相同。其中,以目标回传路径为例,LBT失败的结果可以包括:当前LBT失败,或者,LBT失败的比例大于或等于预设的第一预设门限,或者,LBT成功的比例低于第七预设门限,或者,LBT在第二预设时间内失败的次数大于或等于第二预设门限,或者,LBT在第二预设时间内成功的次数小于第八预设门限等,与上述第一预设门限等相似的第七预设门限和第八预设门限的具体取值也可以根据业务类型和实际应用场景确定,在此不作具体限定。
另外,在实际应用中,LBT的类型可以有多种,上述按与LBT类型对应的LBT成功或失败的比例,或者,与LBT类型对应的LBT在第三预设时间内成功或失败的次数,可以理解为:根据不同类型的LBT可以得到不同的LBT结果。
例如:LBT可以包括以下至少一种类型:
类型一、对于基于负载的设备(load based equipment,LBE),可以使用物理上行共享信道(Physical Uplink Shared Channel,PUSCH)和物理下行共享信道(Physical downlink shared channel,PDSCH)发送;
类型二、对于gNB或UE,可以使用第四类型(Category 4)的LBT来发起一个信道占用时间(Channel Occupation Time,COT),gNB和UE可以共享这个COT进行数据传输。
其中,上述与CAPC对应的LBT成功或失败的比例,或者,与CAPC对应的LBT在第四预设时间内成功或失败的次数可以理解为:在进行Category 4类型的LBT时,发射机(UE或gNB)根据不同的业务类型,可以确定不同的信道优先级(channel access priority class,CAPC),用以确定LBT的退避(backoff)窗长,在一个竞争窗(contention window,其包括一个固定时间长度和backoff的长度)结束后,确定LBT是否成功。发射机依据不同的CAPC值发起的COT,其最大时长是不同的;同时,使用某一CAPC值x发起的COT,只能允许CAPC值<=x的逻辑信道(Logical Channel,LCH)使用该COT进行数据传输。
类型三、对于基于帧的设备(Frame Based Equipment,FBE),可以执行第二类型(Category 2)LBT,进行contention window短一些的LBT。
上述一致性(Consistent)LBT失败信息可以理解为:在一段时间内多次发生LBT失败,可用于确定当前非授权频段不可用。
进一步地,上述LBT结果具体可以是LBT失败的结果,即仅获取回传路径中LBT失败的IAB节点的LBT结果,此时,若未获取到LBT失败的结果,即表示该回传路径可用。
这样,可以减少获取不必要的LBT结果,以减少资源的消耗并简化计算过程。
当然,上述LBT结果也可以仅包括LBT成功的结果,或者同时包括LBT成功的结果和失败的结果,仅需满足根据该LBT结果确定对应的回传路径中有无LBT失败的IAB节点即可,在此不作具体限定。
需要说明的是,除了以上实施例中列举的LBT结果之外,数据传输错误 (例如:混合自动重传请求(Hybrid automatic repeat request,HARQ)传输错误)的次数或者比例也可以理解为数据发送产生冲突,其亦可理解为LBT结果的一种情形,换而言之,所述LBT结果还包括:所述第一IAB节点发生数据传输错误的比例或者,在第一预设时间内发生数据传输错误的次数。
与上述第二预设时间、第三预设时间和第四预设时间相似的,该第一预设时间也可以根据业务需求和应用场景进行设置,在此不作具体限定。
需要说明的是,在所述第一IAB节点确定数据转发的BAP路由选择之后,可以在第一IAB节点直接进行重路由;或者,将该数据转发的BAP路由选择发送到其他IAB节点,以指示该其他的IAB节点据此选择是否进行重路由。例如:假设确定数据转发的BAP路由选择与当前的回传路径不同,则在第一IAB节点具有至少两个下一跳IAB节点时,可以直接进行重路由,以切换至信道可用或信道未被占用的路径上;或者,在第一IAB节点仅具有一个下一跳IAB节点时,可以将确定的数据转发的BAP路由选择转发至其他具有至少两个下一跳IAB节点的IAB节点,以指示该其他IAB节点进行重路由。
作为一种可选的实施方式,所述方法还包括:
所述第一IAB节点接收第二IAB节点发送的LBT结果或重路由指示信息;
所述第一IAB节点将所述第二IAB节点的LBT结果或重路由指示信息转发至第三IAB节点;
其中,所述第三IAB节点为所述第一IAB节点在所述目标回传路径中的父IAB节点、宿主IAB节点或子IAB节点。
本实施方式中,第一IAB节点还可以将第二IAB节点的LBT结果或重路由指示信息转发至第三IAB节点,其中,以下行传输为例,第二IAB节点可以是第一IAB节点的子IAB节点,第三IAB节点可以是第一IAB节点的父IAB节点或宿主IAB节点。例如:如图3b所示,假设第一IAB节点为IAB2,第二IAB节点为IAB6和IAB5,且第三IAB节点为donor IAB节点,此时,IAB2可以将IAB6和IAB5检测到的LBT结果转发给donor IAB节点,以供donor IAB节点据此确定数据转发的BAP路由选择;或者,IAB2也可以根据IAB6和IAB5检测到的LBT结果,确定需要进行重路由,并向donor IAB 节点转发重路由指示,以使donor IAB节点根据该重路由指示直接进行重路由即可。
当然,在下行传输中,第二IAB节点也可以包括第一IAB节点的父IAB节点或宿主IAB节点,第三IAB节点也可以包括第一IAB节点的子IAB节点;而且,在上行传输中,第二IAB节点可以包括第一IAB节点的父IAB节点或宿主IAB节点,第三IAB节点可以包括第一IAB节点的子IAB节点,在此不再赘述。
在实施中,当第一IAB节点根据到目标路径的下一跳节点的链路的LBT结果,为相邻IAB节点生成重路由指示,并发送给相邻IAB节点,相邻IAB节点据此收到的重路由指示来确定是否进行重路由。
作为一种可选的实施方式,所述方法还包括:
所述第一IAB节点根据所述LBT结果,生成第一指示信息,其中,所述第一指示信息用于指示所述LBT结果或者指示第三IAB节点进行重路由;
所述第一IAB节点向所述第三IAB节点发送所述第一指示信息;
其中,所述第一IAB节点和所述第三IAB节点为目标回传路径上或备选回传路径上的相邻节点。
在具体实施中,上述所述第一IAB节点向所述第三IAB节点发送所述第一指示信息可以包括:在应用于上行回传时,第一IAB节点可以将其MT的LBT结果通知给子IAB节点;在应用于下行回传时,第一IAB节点可以将其DU的LBT结果通知给父IAB节点。
在具体实施中,上述所述第一指示信息用于指示第三IAB节点进行重路由,可以理解为:在第一IAB节点根据获取的LBT结构选择了与当前回传路径不同的回传路径时,生成该第一指示信息。
具体的,该第一指示信息可以包括以下两种情况:
情况一、第一指示信息用于指示所述LBT结果,此时,接收到所述第一指示信息的第三IAB节点可以从该第一指示信息中获取所述LBT结果,并基于该LBT结果确定是否进行重路由,或者继续将该LBT结果转发至其他相邻的IAB节点等。
情况二、第一指示信息用于指示第三IAB节点进行重路由,此时,接收 到所述第一指示信息的第三IAB节点,可以直接基于该指示信息进行重路由。
本实施方式中,第一IAB节点的LBT结果或者根据该LBT结果得到的重路由指示信息还可以在回传路径上的相邻IAB节点之间进行传递,以在合适的第三IAB节点上进行路由选择或执行重路由。
进一步地,所述第一指示信息用于指示第三IAB节点进行重路由,包括:
所述第一指示信息用于指示第三IAB节点进行第一切换,所述第一切换为将以所述第一IAB节点为下一跳节点的数据由所述目标回传路径切换至备选回传路径;
在所述第一IAB节点向所述第三IAB节点发送第一指示信息之后,所述方法还包括:
所述第一IAB节点向所述第三IAB节点发送第二指示信息,其中,所述第二指示信息用于指示所述第三IAB节点进行第二切换,所述第二切换为将以所述第一IAB节点为下一跳节点的数据由所述备选回传路径切换至所述目标回传路径。
在具体实施中,上述第二切换可以理解为上述第一切换的逆向切换过程,以在首选的目标回传路径恢复可用时,切换至该目标回传路径上进行数据传输。可以提升对目标回传路径的利用率,以及缩短对备选回传路径的占用时间。
可选的,所述第一指示信息和所述第二指示信息,分别包括以下至少一项:
发送IAB节点的标识符;
受到影响的回传路径的识别符;
受到影响的目的IAB节点的BAP地址。
其中,受到影响的回传路径可以理解为:在重路由过程中,当前的回传路径,以及重路由的目的回传路径,而且回传路径的识别符可以是BAP的链路标识(BAP routing ID)或者其他能够区分回传路径的标识。
上述受到影响的目的IAB节点,可以包括以下至少一项:执行重路由的IAB节点、当前的回传路径上的IAB节点以及重路由的目的回传路径上的IAB节点。
需要说明的是,在实际应用中,上述第三IAB节点也可以将接收到的上述第一指示信息转发至相邻的其他IAB节点,例如:下一跳IAB节点,在此不作赘述。
综上,本申请实施例提供的路由选择方法,第一IAB节点获取LBT结果;并根据所述LBT结果,确定数据转发的BAP路由选择。这样,即使IAB网络运行在非授权频段,也能够根据LBT结果确定目标回传路径和/或备选回传路径上是否存在生LBT失败或LBT失败概率高的情况,并据此从目标回传路径和备选回传路径中选择LBT成功或LBT失败概率低的回传路径作为数据传输的回传路径,能够降低传输延时。
请参阅图5,是本申请实施例提供的一种重路由方法的流程图,该重路由方法的执行主体可以是第三IAB节点,如图5所示,该重路由方法可以包括以下步骤:
步骤501、第三IAB节点获取第一指示信息,其中,所述第一指示信息用于指示LBT结果或者指示所述第三IAB节点进行重路由。
步骤502、所述第三IAB节点根据所述第一指示信息进行重路由。
其中,上述第三IAB节点与如图2所示方法实施例中的第三IAB节点相同,同理,上述第一指示信息可以是如图2所示方法实施例中的第一IAB节点发送的指示信息,且本实施例中的第一指示信息与如图2所示方法实施例中的第一指示信息具有相同的含义和作用,在此不再赘述。
具体的,上述第三IAB节点根据所述第一指示信息进行重路由可以包括以下两种情况:
情况一、第一指示信息用于指示所述LBT结果,此时,第三IAB节点可以从该第一指示信息中获取所述LBT结果,并基于该LBT结果确定是否进行重路由。
情况二、第一指示信息用于指示第三IAB节点进行重路由,此时,第三IAB节点可以直接按照该第一指示信息的指示进行重路由。
可选地,所述第一指示信息包括以下至少一项:
第一IAB节点发送的LBT结果或重路由指示信息,其中,所述第一IAB节点和所述第三IAB节点为目标回传路径上的相邻节点;
CU节点发送的LBT结果或重路由配置信息。
在具体实施中,上述CU节点发送的LBT结果或重路由配置信息可以理解为:CU节点可以对回传路径中各个IAB节点的LBT结果进行汇总或统计,以将该LBT汇总或统计结果转发至第三IAB节点,以使第三IAB节点基于该LBT结果确定是否进行重路由;或者,CU节点根据LBT汇总或统计结果,确定配置第三IAB节点进行重路由时,生成重路由配置信息,以使第三IAB节点按照该重路由配置信息进行重路由。
可选地,所述第三IAB节点为所述第一IAB节点在所述目标回传路径中的父IAB节点、宿主IAB节点或子IAB节点。
可选地,所述LBT结果包括以下至少一项:
所述目标回传路径上至少一个IAB节点中MT的LBT结果;
所述目标回传路径上至少一个IAB节点中DU的LBT结果;
备选回传路径上至少一个IAB节点中MT的LBT结果;
所述备选回传路径上至少一个IAB节点中DU的LBT结果。
可选地,所述第三IAB节点获取第一指示信息,包括:
第三IAB节点接收所述第一IAB节点转发的第二IAB节点的LBT结果;
其中,所述第二IAB节点为所述第一IAB节点在所述目标回传路径中的父IAB节点、宿主IAB节点或子IAB节点。
可选地,所述第三IAB节点根据所述第一指示信息进行重路由,包括:
所述第三IAB节点根据所述第一指示信息,将以所述第一IAB节点为下一跳节点的数据由所述目标回传路径切换至备选回传路径;
在所述第三IAB节点根据所述第一指示信息进行重路由之后,所述方法还包括:
所述第三IAB节点从所述第一IAB节点接收第二指示信息;
所述第三IAB节点根据所述第二指示信息,将以所述第一IAB节点为下一跳节点的数据由所述备选回传路径切换至所述目标回传路径。
可选地,所述第一指示信息和所述第二指示信息,分别包括以下至少一项:
发送IAB节点的标识符;
受到影响的回传路径的识别符;
受到影响的目的IAB节点的BAP地址。
本申请实施例中,第三IAB节点可以根据接收到的第一指示信息指示的LBT结果进行路由选择并执行重路由,或者,直接按照第一指示信息的指示进行重路由,具有与如图2所示方法实施例中,第一IAB节点根据获取的LBT结果生成第一指示信息,并向第三IAB节点发送所述第一指示信息的实施方式具有相同的有益效果,在此不再赘述。
请参阅图6,是本申请实施例提供的一种路由配置方法的流程图,该路由配置方法的执行主体可以是第一目标IAB节点,如图6所示,该路由配置方法可以包括以下步骤:
步骤601、第一目标IAB节点从CU节点接收目标配置信息,其中,所述目标配置信息根据所述CU节点获取的目标回传路径相关的LBT结果确定,且所述目标配置信息用于配置所述第一目标IAB节点的数据转发的BAP路由选择,所述目标回传路径包括所述第一目标IAB节点。
在具体实施中,上述第一目标IAB节点在接收到目标配置信息的情况下,可以将按照该目标配置信息的配置进行重路由,该第一目标IAB节点可以是能够实现由当前回传路径切换至重路由配置中的目的回传路径的IAB节点,例如:如图3a所示,目标回传路径为:donor IAB-DU1→IAB1→IAB5→UE1,备选回传路径为:donor IAB-DU1→IAB2→IAB5→UE1,则第一目标IAB节点可以是donor IAB节点。
可选地,图6所示路由配置方法还包括:
所述第一目标IAB节点向所述CU节点发送第一LBT结果,所述第一LBT结果为所述第一目标IAB节点在所述目标回传路径中的LBT结果;
其中,所述目标回传路径相关的LBT结果包括所述第一LBT结果。
在具体实施中,目标回传路径中的每一个IAB节点可以分别将各自的LBT结果传输至CU节点。
相应的,备选回传路径中的每一个IAB节点,也可以分别将各自的LBT结果传输至CU节点。
可选地,所述目标回传路径相关的LBT结果,包括以下至少一项:
所述目标回传路径中的每一个IAB节点的LBT结果,以及备选回传路径中的每一个IAB节点的LBT结果;
第一IAB节点在目标空间方向上的LBT结果,以及所述第一IAB节点在备选空间方向上的LBT结果,其中,所述目标空间方向与所述备选空间方向对应不同路径中的波束,或者,所述目标空间方向与所述备选空间方向对应同一路径中不同的波束,所述目标回传路径包括所述第一IAB节点;
与CAPC对应的LBT结果。
在具体实施中,目标回传路径或备选回传路径中的每一个IAB节点可以将各自的LBT结果上报到CU节点,或者由某一个IAB节点将目标回传路径或备选回传路径中的每一个IAB节点的LBT结果进行汇总后,上报到CU节点,以使CU节点根据目标回传路径或备选回传路径中的每一个IAB节点的LBT结果,确定是否需要进行重路由,并在确定需要进行重路由时,向配置当前回传路径中的第一目标IAB节点的重路由。
另外,对于方向性LBT,上述LBT结果还可以包括第一IAB节点在目标空间方向上的LBT结果,以及所述第一IAB节点在备选空间方向上的LBT结果,该目标空间方向和备选空间方向分别与如图2所示方法实施例中的目标空间方向和备选空间方向具有相同的含义,在此不再赘述。
另外,上述与CAPC对应的LBT结果,与如图2所示方法实施例中记载的:与CAPC对应的LBT成功或失败的比例,具有相同含义,在此不再赘述。
本申请实施例提供的路由配置方法中,可以由CU根据目标回传路径相关的LBT结果,对回传路径中的第一目标IAB节点的重路由进行统一配置,可以避免在回传路径中的其他IAB节点分别执行路由选择或重路由,可以避免不同IAB节点进行重复的计算和重复的数据互传,从而简化了重路由的计算过程和数据传输过程。
请参阅图7,是本申请实施例提供的另一种路由配置方法的流程图,如图7所示路由配置方法与如图6所示路由配置方法的不同之处在于,如图7所示路由配置方法的执行主体可时CU节点,而如图6所示路由配置方法的执行主图为第一目标IAB节点,如图7所示,该另一种路由配置方法可以包括以下步骤:
步骤701、CU节点从目标回传路径中的IAB节点接收所述目标回传路径相关的LBT结果。
步骤702、所述CU节点根据所述目标回传路径相关的LBT结果,向第一目标IAB节点发送目标配置信息,其中,所述目标配置信息用于配置所述第一目标IAB节点的数据转发的BAP路由选择,所述目标回传路径包括所述第一目标IAB节点。
可选地,所述目标回传路径相关的LBT结果,包括以下至少一项:
所述目标回传路径中的每一个IAB节点的LBT结果,以及备选回传路径中的每一个IAB节点的LBT结果;
第一IAB节点在目标方向上的LBT结果,以及所述第一IAB节点在备选方向上的LBT结果,其中,所述目标方向与所述备选方向对应不同路径中的波束,或者,所述目标方向与所述备选方向对应同一路径中不同的波束;
与CAPC对应的LBT结果。
本申请实施例提供的路由配置方法与如图6所示方法实施例中的路由配置方法相对应,且能够取得相同的有益效果,为避免重复,在此不再赘述。
需要说明的是,本申请实施例提供的路由选择方法,执行主体可以为路由选择装置,或者,该路由选择装置中的用于执行路由选择方法的控制模块。本申请实施例中以路由选择装置执行路由选择方法为例,说明本申请实施例提供的路由选择装置。
请参阅图8,是本申请实施例提供的一种路由选择装置的结构图,该路由选择装置可以用于第一IAB节点,如图8所示,该路由选择装置800可以包括:
第一获取模块801,用于获取LBT结果;
第一确定模块802,用于根据所述LBT结果,确定数据转发的BAP路由选择。
可选的,第一获取模块801,具体用于执行以下至少一项:
接收第二IAB节点发送的LBT结果,其中,所述第二IAB节点为所述第一IAB节点在目标回传路径中的父IAB节点、宿主IAB节点或子IAB节点;
进行LBT,以得到LBT结果;
接收CU节点发送的LBT结果。
可选的,第一获取模块801,包括:
第一检测单元,用于在目标空间方向进行LBT,以得到所述目标空间方向的LBT结果;
第二检测单元,用于所述第一IAB节点在备选空间方向进行LBT,以得到所述备选空间方向的LBT结果;
其中,所述目标空间方向与所述备选空间方向对应不同路径中的波束,或者,所述目标空间方向与所述备选空间方向对应同一路径中不同的波束。
可选的,第一确定模块802,包括:
第一选择单元,用于在所述目标空间方向的LBT成功或者在所述目标空间方向的LBT的失败比例低于第一比例阈值的情况下,选择使用所述目标空间方向对应的目标回传路径或目标波束发送数据;
第二选择单元,用于在所述目标空间方向的LBT失败或者在所述目标空间方向的LBT的失败比例大于或等于所述第一比例阈值,且所述第一IAB节点在所述备选空间方向的LBT成功或者在所述备选空间方向的LBT的失败比例低于第二比例阈值的情况下,选择使用所述备选空间方向对应的备选回传路径或备选波束发送数据。
可选的,所述LBT结果还包括:所述目标空间方向的波束参数和所述备选空间方向的波束参数中的至少一项。
可选的,所述LBT结果包括以下至少一项:
目标回传路径上至少一个IAB节点中MT的LBT结果;
所述目标回传路径上至少一个IAB节点中DU的LBT结果;
备选回传路径上至少一个IAB节点中MT的LBT结果;
所述备选回传路径上至少一个IAB节点中DU的LBT结果。
可选的,所述LBT结果包括以下至少一项:
LBT成功或失败;
LBT成功或失败的比例,或者,LBT在第二预设时间内成功或失败的次数;
按与LBT类型对应的LBT成功或失败的比例,或者,与LBT类型对应的LBT在第三预设时间内成功或失败的次数;
与CAPC对应的LBT成功或失败的比例,或者,与CAPC对应的LBT在第四预设时间内成功或失败的次数;
一致性LBT失败信息。
可选的,第一确定模块802,具体用于:
在以下至少一种条件下,选择使用所述备选回传路径发送数据:
在所述目标回传路径上的至少一个IAB节点的LBT结果为失败;
在所述目标回传路径上的至少一个IAB节点的LBT失败的比例大于或等于第一预设门限;
在所述目标回传路径上的至少一个IAB节点的LBT失败的次数大于或等于第二预设门限;
在所述备选回传路径上的没有IAB节点的LBT结果为失败;
在所述备选回传路径上的任一个IAB节点的LBT失败的比例低于第三预设门限;
在所述备选回传路径上的任一个IAB节点的LBT失败的次数低于第四预设门限。
可选的,第一确定模块802,具体用于:
在以下至少一种条件下,选择使用所述目标回传路径发送数据:
在所述目标回传路径上的没有IAB节点的LBT结果为失败;
在所述目标回传路径上的任意一个IAB节点的LBT失败的比例低于第五预设门限;
在所述目标回传路径上的任意一个IAB节点的LBT失败的次数低于第六预设门限。
可选的,所述LBT结果还包括:所述第一IAB节点发生数据传输错误的比例或者,在第一预设时间内发生数据传输错误的次数。
可选的,路由选择装置800还包括:
第一接收模块,用于接收第二IAB节点发送的LBT结果或重路由指示信息;
第一转发模块,用于将所述第二IAB节点的LBT结果或重路由指示信息转发至第三IAB节点;
其中,所述第三IAB节点为所述第一IAB节点在所述目标回传路径中的父IAB节点、宿主IAB节点或子IAB节点。
可选的,路由选择装置800还包括:
生成模块,用于根据所述LBT结果,生成第一指示信息,其中,所述第一指示信息用于指示所述LBT结果或者指示第三IAB节点进行重路由;
第一发送模块,用于向所述第三IAB节点发送所述第一指示信息;
其中,所述第一IAB节点和所述第三IAB节点为目标回传路径上或备选回传路径上的相邻节点。
可选的,所述第一指示信息用于指示第三IAB节点进行重路由,包括:
所述第一指示信息用于指示第三IAB节点进行第一切换,所述第一切换为将以所述第一IAB节点为下一跳节点的数据由所述目标回传路径切换至备选回传路径;
路由选择装置800还包括:
第四发送模块,用于向所述第三IAB节点发送第二指示信息,其中,所述第二指示信息用于指示所述第三IAB节点进行第二切换,所述第二切换为将以所述第一IAB节点为下一跳节点的数据由所述备选回传路径切换至所述目标回传路径。
可选的,所述第一指示信息和所述第二指示信息,分别包括以下至少一项:
发送IAB节点的标识符;
受到影响的回传路径的识别符;
受到影响的目的IAB节点的BAP地址。
本申请实施例提供的路由选择装置800能够执行如图2所示路由选择方法实施例中第一IAB节点执行的各个步骤,且能够取得相同的有益效果,为避免重复,在此不再赘述。
需要说明的是,本申请实施例提供的重路由方法,执行主体可以为重路由装置,或者,该重路由装置中的用于执行重路由方法的控制模块。本申请 实施例中以重路由装置执行重路由方法为例,说明本申请实施例提供的重路由装置。
请参阅图9,是本申请实施例提供的一种重路由装置的结构图,该重路由装置可以用于第三IAB节点,如图9所示,该重路由装置900可以包括:
第二获取模块901,用于获取第一指示信息,其中,所述第一指示信息用于指示LBT结果或者指示第三IAB节点进行重路由;
重路由模块902,用于根据所述第一指示信息进行重路由。
可选的,所述第一指示信息包括以下至少一项:
第一IAB节点发送的LBT结果或重路由指示信息,其中,所述第一IAB节点和所述第三IAB节点为目标回传路径上的相邻节点;
CU节点发送的LBT结果或重路由配置信息。
可选的,所述第三IAB节点为所述第一IAB节点在所述目标回传路径中的父IAB节点、宿主IAB节点或子IAB节点。
可选的,所述LBT结果包括以下至少一项:
所述目标回传路径上至少一个IAB节点中MT的LBT结果;
所述目标回传路径上至少一个IAB节点中DU的LBT结果;
备选回传路径上至少一个IAB节点中MT的LBT结果;
所述备选回传路径上至少一个IAB节点中DU的LBT结果。
可选的,第二获取模块901,具体用于:
接收所述第一IAB节点转发的第二IAB节点的LBT结果;
其中,所述第二IAB节点为所述第一IAB节点在所述目标回传路径中的父IAB节点、宿主IAB节点或子IAB节点。
可选的,重路由模块902,具体用于:
根据所述第一指示信息,将以所述第一IAB节点为下一跳节点的数据由所述目标回传路径切换至备选回传路径;
重路由装置900还包括:
第二接收模块,用于从所述第一IAB节点接收第二指示信息;
切换模块,用于根据所述第二指示信息,将以所述第一IAB节点为下一跳节点的数据由所述备选回传路径切换至所述目标回传路径。
可选的,所述第一指示信息和所述第二指示信息,分别包括以下至少一项:
发送IAB节点的标识符;
受到影响的回传路径的识别符;
受到影响的目的IAB节点的BAP地址。
本申请实施例提供的重路由装置900能够执行如图5所示重路由方法实施例中第三IAB节点执行的各个步骤,且能够取得相同的有益效果,为避免重复,在此不再赘述。
需要说明的是,本申请实施例提供的路由配置方法,执行主体可以为路由配置装置,或者,该路由配置装置中的用于执行路由配置方法的控制模块。本申请实施例中以路由配置装置执行路由配置方法为例,说明本申请实施例提供的路由配置装置。
请参阅图10,是本申请实施例提供的一种路由配置装置的结构图,该路由配置装置可以用于第一目标IAB节点,如图10所示,该路由配置装置1000可以包括:
第三接收模块1001,用于从CU节点接收目标配置信息,其中,所述目标配置信息根据所述CU节点获取的目标回传路径相关的LBT结果确定,且所述目标配置信息用于配置所述第一目标IAB节点的数据转发的BAP路由选择,所述目标回传路径包括所述第一目标IAB节点。
可选的,路由配置装置1000还包括:
第二发送模块,用于向所述CU节点发送第一LBT结果,所述第一LBT结果为所述第一目标IAB节点在所述目标回传路径中的LBT结果;
其中,所述目标回传路径相关的LBT结果包括所述第一LBT结果。
可选的,所述目标回传路径相关的LBT结果,包括以下至少一项:
所述目标回传路径中的每一个IAB节点的LBT结果,以及备选回传路径中的每一个IAB节点的LBT结果;
第一IAB节点在目标空间方向上的LBT结果,以及所述第一IAB节点在备选空间方向上的LBT结果,其中,所述目标空间方向与所述备选空间方向对应不同路径中的波束,或者,所述目标空间方向与所述备选空间方向对 应同一路径中不同的波束,所述目标回传路径包括所述第一IAB节点;
与CAPC对应的LBT结果。
本申请实施例提供的路由配置装置1000能够执行如图6所示路由配置方法实施例中第一目标IAB节点执行的各个步骤,且能够取得相同的有益效果,为避免重复,在此不再赘述。
需要说明的是,本申请实施例提供的路由配置方法,执行主体可以为路由配置装置,或者,该路由配置装置中的用于执行路由配置方法的控制模块。本申请实施例中以路由配置装置执行路由配置方法为例,说明本申请实施例提供的路由配置装置。
请参阅图11,是本申请实施例提供的一种路由配置装置的结构图,该路由配置装置可以用于CU节点,如图11所示,该路由配置装置1100可以包括:
第四接收模块1101,用于从目标回传路径中的IAB节点接收所述目标回传路径相关的LBT结果;
第三发送模块1102,用于根据所述目标回传路径相关的LBT结果,向第一目标IAB节点发送目标配置信息,其中,所述目标配置信息用于配置所述第一目标IAB节点的数据转发的BAP路由选择,所述目标回传路径包括所述第一目标IAB节点。
可选的,所述目标回传路径相关的LBT结果,包括以下至少一项:
所述目标回传路径中的每一个IAB节点的LBT结果,以及备选回传路径中的每一个IAB节点的LBT结果;
第一IAB节点在目标方向上的LBT结果,以及所述第一IAB节点在备选方向上的LBT结果,其中,所述目标方向与所述备选方向对应不同路径中的波束,或者,所述目标方向与所述备选方向对应同一路径中不同的波束;
与CAPC对应的LBT结果。
本申请实施例提供的路由配置装置1100能够执行如图7所示路由配置方法实施例中CU节点执行的各个步骤,且能够取得相同的有益效果,为避免重复,在此不再赘述。
可选的,如图12所示,本申请实施例还提供一种网络侧设备1200,包 括处理器1201,存储器1202,存储在存储器1202上并可在所述处理器1201上运行的程序或指令,例如,该通信设备1200为IAB节点或CU节点时,该程序或指令被处理器1201执行时实现如图2、图5、图6或图7所示方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。
本申请实施例还提供一种网络侧设备,包括处理器和通信接口。
在第一种实施方式中,通信接口用于获取LBT结果,处理器用于根据所述LBT结果,确定数据转发的BAP路由选择。
在第二种实施方式中,通信接口用于获取第一指示信息,其中,所述第一指示信息用于指示LBT结果或者指示所述第三IAB节点进行重路由,所述处理器用于根据所述第一指示信息进行重路由。
在第三种实施方式中,通信接口用于从CU节点接收目标配置信息,其中,所述目标配置信息根据所述CU节点获取的目标回传路径相关的LBT结果确定,且所述目标配置信息用于配置所述第一目标IAB节点的数据转发的BAP路由选择,所述目标回传路径包括所述第一目标IAB节点。
在第四种实施方式中,通信接口用于从目标回传路径中的IAB节点接收所述目标回传路径相关的LBT结果,所述通信接口还用于根据所述目标回传路径相关的LBT结果,向第一目标IAB节点发送目标配置信息,其中,所述目标配置信息用于配置所述第一目标IAB节点的数据转发的BAP路由选择,所述目标回传路径包括所述第一目标IAB节点。
该网络侧设备实施例是与如图2、图5、图6或图7所示方法实施例对应的,上述方法实施例的各个实施过程和实现方式均可适用于该网络侧设备实施例中,且能达到相同的技术效果。
具体地,本申请实施例还提供了一种网络侧设备。如图13所示,该网络设备1300包括:天线1301、射频装置1302、基带装置1303。天线1301与射频装置1302连接。在上行方向上,射频装置1302通过天线1301接收信息,将接收的信息发送给基带装置1303进行处理。在下行方向上,基带装置1303对要发送的信息进行处理,并发送给射频装置1302,射频装置1302对收到的信息进行处理后经过天线1301发送出去。
上述频带处理装置可以位于基带装置1303中,以上实施例中网络侧设备 执行的方法可以在基带装置1303中实现,该基带装置1303包括处理器1304和存储器1305。
基带装置1303例如可以包括至少一个基带板,该基带板上设置有多个芯片,如图13所示,其中一个芯片例如为处理器1304,与存储器1305连接,以调用存储器1305中的程序,执行以上方法实施例中所示的网络设备操作。
该基带装置1303还可以包括网络接口1306,用于与射频装置1302交互信息,该接口例如为通用公共无线接口(Common Public Eadio Interface,CPRI)。
具体地,本发明实施例的网络侧设备还包括:存储在存储器1305上并可在处理器1304上运行的指令或程序,处理器1304调用存储器1305中的指令或程序执行图8、图9、图10或图11所示各模块执行的方法,并达到相同的技术效果,为避免重复,故不在此赘述。
本申请实施例还提供一种可读存储介质,所述可读存储介质上存储有程序或指令,所述存储介质可以是易失的,也可以是非易失的,该程序或指令被处理器执行时实现如图2、图5、图6或图7所示方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。
其中,所述处理器为上述实施例中所述的终端中的处理器。所述可读存储介质,包括计算机可读存储介质,如计算机只读存储器(Read-Only Memory,ROM)、随机存取存储器(Random Access Memory,RAM)、磁碟或者光盘等。
本申请实施例另提供了一种芯片,所述芯片包括处理器和通信接口,所述通信接口和所述处理器耦合,所述处理器用于运行程序或指令,实现如图2、图5、图6或图7所示方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。
应理解,本申请实施例提到的芯片还可以称为系统级芯片,系统芯片,芯片系统或片上系统芯片等。
本申请实施例还提供一种计算机程序产品,所述计算机程序产品被存储在非易失的存储介质中,所述计算机程序产品被至少一个处理器执行以实现如图2、图5、图6或图7所示方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。
需要说明的是,在本文中,术语“包括”、“包含”或者其任何其他变体意 在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下,由语句“包括一个……”限定的要素,并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。此外,需要指出的是,本申请实施方式中的方法和装置的范围不限按示出或讨论的顺序来执行功能,还可包括根据所涉及的功能按基本同时的方式或按相反的顺序来执行功能,例如,可以按不同于所描述的次序来执行所描述的方法,并且还可以添加、省去、或组合各种步骤。另外,参照某些示例所描述的特征可在其他示例中被组合。
通过以上的实施方式的描述,本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现,当然也可以通过硬件,但很多情况下前者是更佳的实施方式。基于这样的理解,本申请的技术方案本质上或者说对相关技术做出贡献的部分可以以计算机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(如ROM/RAM、磁碟、光盘)中,包括若干指令用以使得一台终端(可以是手机,计算机,服务器,空调器,或者网络设备等)执行本申请各个实施例所述的方法。
上面结合附图对本申请的实施例进行了描述,但是本申请并不局限于上述的具体实施方式,上述的具体实施方式仅仅是示意性的,而不是限制性的,本领域的普通技术人员在本申请的启示下,在不脱离本申请宗旨和权利要求所保护的范围情况下,还可做出很多形式,均属于本申请的保护之内。

Claims (44)

  1. 一种路由选择方法,包括:
    第一自回传IAB节点获取会话前监听LBT结果;
    所述第一IAB节点根据所述LBT结果,确定数据转发的回传适配协议BAP路由选择。
  2. 根据权利要求1所述的路由选择方法,其中,所述第一IAB节点获取LBT结果,包括以下至少一项:
    所述第一IAB节点接收第二IAB节点发送的LBT结果,其中,所述第二IAB节点为所述第一IAB节点在目标回传路径中的父IAB节点、宿主IAB节点或子IAB节点;
    所述第一IAB节点进行LBT,以得到LBT结果;
    所述第一IAB节点接收集中单元CU节点发送的LBT结果。
  3. 根据权利要求2所述的路由选择方法,其中,所述第一IAB节点进行LBT,以得到LBT结果,包括:
    所述第一IAB节点在目标空间方向进行LBT,以得到所述目标空间方向的LBT结果;
    所述第一IAB节点在备选空间方向进行LBT,以得到所述备选空间方向的LBT结果;
    其中,所述目标空间方向与所述备选空间方向对应不同路径中的波束,或者,所述目标空间方向与所述备选空间方向对应同一路径中不同的波束。
  4. 根据权利要求3所述的路由选择方法,其中,所述LBT结果还包括:所述目标空间方向的波束参数和所述备选空间方向的波束参数中的至少一项。
  5. 根据权利要求3所述的路由选择方法,其中,所述第一IAB节点根据所述LBT结果,确定数据转发的BAP路由选择,包括:
    所述第一IAB节点在所述目标空间方向的LBT成功或者在所述目标空间方向的LBT的失败比例低于第一比例阈值的情况下,选择使用所述目标空间方向对应的目标回传路径或目标波束发送数据;
    所述第一IAB节点在所述目标空间方向的LBT失败或者在所述目标空间方向的LBT的失败比例大于或等于所述第一比例阈值,且所述第一IAB节点在所述备选空间方向的LBT成功或者在所述备选空间方向的LBT的失败比例低于第二比例阈值的情况下,选择使用所述备选空间方向对应的备选回传路径或备选波束发送数据。
  6. 根据权利要求1所述的路由选择方法,其中,所述LBT结果包括以下至少一项:
    目标回传路径上至少一个IAB节点中终端功能模块MT的LBT结果;
    所述目标回传路径上至少一个IAB节点中分布单元DU的LBT结果;
    备选回传路径上至少一个IAB节点中MT的LBT结果;
    所述备选回传路径上至少一个IAB节点中DU的LBT结果。
  7. 根据权利要求6所述的路由选择方法,其中,所述LBT结果包括以下至少一项:
    LBT成功或失败;
    LBT成功或失败的比例,或者,LBT在第二预设时间内成功或失败的次数;
    按与LBT类型对应的LBT成功或失败的比例,或者,与LBT类型对应的LBT在第三预设时间内成功或失败的次数;
    与信道接入优先级CAPC对应的LBT成功或失败的比例,或者,与CAPC对应的LBT在第四预设时间内成功或失败的次数;
    一致性LBT失败信息。
  8. 根据权利要求7所述的路由选择方法,其中,所述第一IAB节点根据所述LBT结果,确定数据转发的回传适配协议BAP路由选择,包括:
    所述第一IAB节点在以下至少一种条件下,选择使用所述备选回传路径发送数据:
    在所述目标回传路径上的至少一个IAB节点的LBT结果为失败;
    在所述目标回传路径上的至少一个IAB节点的LBT失败的比例大于或等 于第一预设门限;
    在所述目标回传路径上的至少一个IAB节点的LBT失败的次数大于或等于第二预设门限;
    在所述备选回传路径上的没有IAB节点的LBT结果为失败;
    在所述备选回传路径上的任一个IAB节点的LBT失败的比例低于第三预设门限;
    在所述备选回传路径上的任一个IAB节点的LBT失败的次数低于第四预设门限。
  9. 根据权利要求7所述的路由选择方法,其中,所述第一IAB节点根据所述LBT结果,确定数据转发的回传适配协议BAP路由选择,包括:
    所述第一IAB节点在以下至少一种条件下,选择使用所述目标回传路径发送数据:
    在所述目标回传路径上的没有IAB节点的LBT结果为失败;
    在所述目标回传路径上的任意一个IAB节点的LBT失败的比例低于第五预设门限;
    在所述目标回传路径上的任意一个IAB节点的LBT失败的次数低于第六预设门限。
  10. 根据权利要求1所述的路由选择方法,其中,所述LBT结果还包括:所述第一IAB节点发生数据传输错误的比例或者,在第一预设时间内发生数据传输错误的次数。
  11. 根据权利要求1所述的路由选择方法,还包括:
    所述第一IAB节点接收第二IAB节点发送的LBT结果或重路由指示信息;
    所述第一IAB节点将所述第二IAB节点的LBT结果或重路由指示信息转发至第三IAB节点;
    其中,所述第三IAB节点为所述第一IAB节点在目标回传路径中的父IAB节点、宿主IAB节点或子IAB节点。
  12. 根据权利要求1所述的路由选择方法,还包括:
    所述第一IAB节点根据所述LBT结果,生成第一指示信息,其中,所述第一指示信息用于指示所述LBT结果或者指示第三IAB节点进行重路由;
    所述第一IAB节点向所述第三IAB节点发送所述第一指示信息;
    其中,所述第一IAB节点和所述第三IAB节点为目标回传路径上或备选回传路径上的相邻节点。
  13. 根据权利要求12所述的路由选择方法,其中,所述第一指示信息用于指示第三IAB节点进行重路由,包括:
    所述第一指示信息用于指示第三IAB节点进行第一切换,所述第一切换为将以所述第一IAB节点为下一跳节点的数据由所述目标回传路径切换至备选回传路径;
    在所述第一IAB节点向所述第三IAB节点发送第一指示信息之后,所述方法还包括:
    所述第一IAB节点向所述第三IAB节点发送第二指示信息,其中,所述第二指示信息用于指示所述第三IAB节点进行第二切换,所述第二切换为将以所述第一IAB节点为下一跳节点的数据由所述备选回传路径切换至所述目标回传路径。
  14. 根据权利要求13所述的路由选择方法,其中,所述第一指示信息和所述第二指示信息,分别包括以下至少一项:
    发送IAB节点的标识符;
    受到影响的回传路径的识别符;
    受到影响的目的IAB节点的BAP地址。
  15. 一种重路由方法,包括:
    第三自回传IAB节点获取第一指示信息,其中,所述第一指示信息用于指示会话前监听LBT结果或者指示所述第三IAB节点进行重路由;
    所述第三IAB节点根据所述第一指示信息进行重路由。
  16. 根据权利要求15所述的重路由方法,其中,所述第一指示信息包括 以下至少一项:
    第一IAB节点发送的LBT结果或重路由指示信息,其中,所述第一IAB节点和所述第三IAB节点为目标回传路径上的相邻节点;
    集中单元CU节点发送的LBT结果或重路由配置信息。
  17. 根据权利要求16所述的重路由方法,其中,所述第三IAB节点为所述第一IAB节点在所述目标回传路径中的父IAB节点、宿主IAB节点或子IAB节点。
  18. 根据权利要求15所述的重路由方法,其中,所述LBT结果包括以下至少一项:
    目标回传路径上至少一个IAB节点中终端功能模块MT的LBT结果;
    所述目标回传路径上至少一个IAB节点中分布单元DU的LBT结果;
    备选回传路径上至少一个IAB节点中MT的LBT结果;
    所述备选回传路径上至少一个IAB节点中DU的LBT结果。
  19. 根据权利要求16所述的重路由方法,其中,所述第三IAB节点获取第一指示信息,包括:
    第三IAB节点接收所述第一IAB节点转发的第二IAB节点的LBT结果;
    其中,所述第二IAB节点为所述第一IAB节点在所述目标回传路径中的父IAB节点、宿主IAB节点或子IAB节点。
  20. 根据权利要求16所述的重路由方法,其中,所述第三IAB节点根据所述第一指示信息进行重路由,包括:
    所述第三IAB节点根据所述第一指示信息,将以所述第一IAB节点为下一跳节点的数据由所述目标回传路径切换至备选回传路径;
    在所述第三IAB节点根据所述第一指示信息进行重路由之后,所述方法还包括:
    所述第三IAB节点从所述第一IAB节点接收第二指示信息;
    所述第三IAB节点根据所述第二指示信息,将以所述第一IAB节点为下一跳节点的数据由所述备选回传路径切换至所述目标回传路径。
  21. 根据权利要求20所述的重路由方法,其中,所述第一指示信息和所述第二指示信息,分别包括以下至少一项:
    发送IAB节点的标识符;
    受到影响的回传路径的识别符;
    受到影响的目的IAB节点的回传适配协议BAP地址。
  22. 一种路由配置方法,所述方法包括:
    第一目标自回传IAB节点从集中单元CU节点接收目标配置信息,其中,所述目标配置信息根据所述CU节点获取的目标回传路径相关的会话前监听LBT结果确定,且所述目标配置信息用于配置所述第一目标IAB节点的数据转发的回传适配协议BAP路由选择,所述目标回传路径包括所述第一目标IAB节点。
  23. 根据权利要求22所述的路由配置方法,还包括:
    所述第一目标IAB节点向所述CU节点发送第一LBT结果,所述第一LBT结果为所述第一目标IAB节点在所述目标回传路径中的LBT结果;
    其中,所述目标回传路径相关的LBT结果包括所述第一LBT结果。
  24. 根据权利要求22所述的路由配置方法,其中,所述目标回传路径相关的LBT结果,包括以下至少一项:
    所述目标回传路径中的每一个IAB节点的LBT结果,以及备选回传路径中的每一个IAB节点的LBT结果;
    第一IAB节点在目标空间方向上的LBT结果,以及所述第一IAB节点在备选空间方向上的LBT结果,其中,所述目标空间方向与所述备选空间方向对应不同路径中的波束,或者,所述目标空间方向与所述备选空间方向对应同一路径中不同的波束,所述目标回传路径包括所述第一IAB节点;
    与信道接入优先级CAPC对应的LBT结果。
  25. 一种路由配置方法,包括:
    集中单元CU节点从目标回传路径中的自回传IAB节点接收所述目标回传路径相关的会话前监听LBT结果;
    所述CU节点根据所述目标回传路径相关的LBT结果,向第一目标IAB节点发送目标配置信息,其中,所述目标配置信息用于配置所述第一目标IAB节点的数据转发的回传适配协议BAP路由选择,所述目标回传路径包括所述第一目标IAB节点。
  26. 根据权利要求25所述的路由配置方法,其中,所述目标回传路径相关的LBT结果,包括以下至少一项:
    所述目标回传路径中的每一个IAB节点的LBT结果,以及备选回传路径中的每一个IAB节点的LBT结果;
    第一IAB节点在目标方向上的LBT结果,以及所述第一IAB节点在备选方向上的LBT结果,其中,所述目标方向与所述备选方向对应不同路径中的波束,或者,所述目标方向与所述备选方向对应同一路径中不同的波束;
    与信道接入优先级CAPC对应的LBT结果。
  27. 一种路由选择装置,用于第一自回传IAB节点,所述路由选择装置包括:
    第一获取模块,用于获取会话前监听LBT结果;
    第一确定模块,用于根据所述LBT结果,确定数据转发的回传适配协议BAP路由选择。
  28. 根据权利要求27所述的装置,其中,所述第一获取模块,具体用于执行以下至少一项:
    接收第二IAB节点发送的LBT结果,其中,所述第二IAB节点为所述第一IAB节点在目标回传路径中的父IAB节点、宿主IAB节点或子IAB节点;
    进行LBT,以得到LBT结果;
    接收集中单元CU节点发送的LBT结果。
  29. 根据权利要求27所述的装置,还包括:
    第一接收模块,用于接收第二IAB节点发送的LBT结果或重路由指示信息;
    第一转发模块,用于将所述第二IAB节点的LBT结果或重路由指示信息转发至第三IAB节点;
    其中,所述第三IAB节点为所述第一IAB节点在目标回传路径中的父IAB节点、宿主IAB节点或子IAB节点。
  30. 根据权利要求27所述的装置,还包括:
    生成模块,用于根据所述LBT结果,生成第一指示信息,其中,所述第一指示信息用于指示所述LBT结果或者指示第三IAB节点进行重路由;
    第一发送模块,用于向所述第三IAB节点发送所述第一指示信息;
    其中,所述第一IAB节点和所述第三IAB节点为目标回传路径上或备选回传路径上的相邻节点。
  31. 一种重路由装置,用于第三自回传IAB节点,所述重路由装置包括:
    第二获取模块,用于获取第一指示信息,其中,所述第一指示信息用于指示会话前监听LBT结果或者指示第三IAB节点进行重路由;
    重路由模块,用于根据所述第一指示信息进行重路由。
  32. 根据权利要求31所述的装置,其中,所述第一指示信息包括以下至少一项:
    第一IAB节点发送的LBT结果或重路由指示信息,其中,所述第一IAB节点和所述第三IAB节点为目标回传路径上的相邻节点;
    集中单元CU节点发送的LBT结果或重路由配置信息。
  33. 根据权利要求32所述的装置,其中,所述重路由模块,具体用于:
    根据所述第一指示信息,将以所述第一IAB节点为下一跳节点的数据由所述目标回传路径切换至备选回传路径;
    所述重路由装置还包括:
    第二接收模块,用于从所述第一IAB节点接收第二指示信息;
    切换模块,用于根据所述第二指示信息,将以所述第一IAB节点为下一跳节点的数据由所述备选回传路径切换至所述目标回传路径。
  34. 一种路由配置装置,用于第一目标自回传IAB节点,所述路由配置装 置包括:
    第三接收模块,用于从集中单元CU节点接收目标配置信息,其中,所述目标配置信息根据所述CU节点获取的目标回传路径相关的会话前监听LBT结果确定,且所述目标配置信息用于配置所述第一目标IAB节点的数据转发的回传适配协议BAP路由选择,所述目标回传路径包括所述第一目标IAB节点。
  35. 根据权利要求34所述的装置,还包括:
    第二发送模块,用于向所述CU节点发送第一LBT结果,所述第一LBT结果为所述第一目标IAB节点在所述目标回传路径中的LBT结果;
    其中,所述目标回传路径相关的LBT结果包括所述第一LBT结果。
  36. 一种路由配置装置,用于集中单元CU节点,所述路由配置装置包括:
    第四接收模块,用于从目标回传路径中的自回传IAB节点接收所述目标回传路径相关的会话前监听LBT结果;
    第三发送模块,用于根据所述目标回传路径相关的LBT结果,向第一目标IAB节点发送目标配置信息,其中,所述目标配置信息用于配置所述第一目标IAB节点的数据转发的回传适配协议BAP路由选择,所述目标回传路径包括所述第一目标IAB节点。
  37. 一种第一自回传IAB节点,包括处理器,存储器及存储在所述存储器上并可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现如权利要求1至14中任一项所述的路由选择方法的步骤。
  38. 一种第三自回传IAB节点,包括处理器,存储器及存储在所述存储器上并可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现如权利要求15至21中任一项所述的重路由方法的步骤。
  39. 一种第一目标自回传IAB节点,包括处理器,存储器及存储在所述存储器上并可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现如权利要求22至24中任一项所述的路由配置方法的步骤。
  40. 一种集中单元CU节点,包括处理器,存储器及存储在所述存储器上 并可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现如权利要求25或26所述的路由配置方法的步骤。
  41. 一种可读存储介质,所述可读存储介质上存储程序或指令,所述程序或指令被处理器执行时实现如权利要求1至14中任一项所述的路由选择方法的步骤,或者实现如权利要求15至21中任一项所述的重路由方法的步骤,或者实现如权利要求22至24中任一项所述的路由配置方法的步骤,或者实现如权利要求25或26所述的路由配置方法的步骤。
  42. 一种芯片,包括处理器和通信接口,所述通信接口和所述处理器耦合,所述处理器用于运行程序或指令,实现如权利要求1至14中任一项所述的路由选择方法的步骤,或者实现如权利要求15至21中任一项所述的重路由方法的步骤,或者实现如权利要求22至24中任一项所述的路由配置方法的步骤,或者实现如权利要求25或26所述的路由配置方法的步骤。
  43. 一种计算机程序产品,所述计算机程序产品被存储在非易失的存储介质中,所述计算机程序产品被至少一个处理器执行以实现如权利要求1至14中任一项所述的路由选择方法的步骤,或者实现如权利要求15至21中任一项所述的重路由方法的步骤,或者实现如权利要求22至24中任一项所述的路由配置方法的步骤,或者实现如权利要求25或26所述的路由配置方法的步骤。
  44. 一种通信设备,被配置为执行如权利要求1至14中任一项所述的路由选择方法的步骤,或者被配置为执行如权利要求15至21中任一项所述的重路由方法的步骤,或者被配置为执行如权利要求22至24中任一项所述的路由配置方法的步骤,或者被配置为执行如权利要求25或26所述的路由配置方法的步骤。
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