WO2022127579A1 - Iab节点的数据处理方法、装置及iab节点 - Google Patents

Iab节点的数据处理方法、装置及iab节点 Download PDF

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Publication number
WO2022127579A1
WO2022127579A1 PCT/CN2021/134343 CN2021134343W WO2022127579A1 WO 2022127579 A1 WO2022127579 A1 WO 2022127579A1 CN 2021134343 W CN2021134343 W CN 2021134343W WO 2022127579 A1 WO2022127579 A1 WO 2022127579A1
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Prior art keywords
bap
iab node
pdu
header
iab
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PCT/CN2021/134343
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English (en)
French (fr)
Inventor
李思栋
王达
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大唐移动通信设备有限公司
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Publication of WO2022127579A1 publication Critical patent/WO2022127579A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/04—Switchboards

Definitions

  • the present disclosure relates to the field of communication technologies, and in particular, to a data processing method and device for an IAB node, and an IAB node.
  • IAB Integrated Access and Backhaul network technology relays wireless signals between multiple nodes to achieve the purpose of expanding the coverage of base stations.
  • the IAB network enhances the coverage through multi-hop and also increases the end-to-end transmission delay.
  • IAB network deployment it consists of IAB donor (IAB host node or central control node), IAB node and terminal.
  • the IAB donor is used to connect the core network, transmit the information of the IAB node and terminal back to the core network, and transmit the information of the core network to the IAB node and terminal.
  • the IAB donor is also responsible for managing the IAB nodes in the entire IAB network.
  • the IAB node is responsible for relaying and transmitting the information of the terminal to the IAB donor through the wireless link (Uu interface), and relaying and transmitting the information of the IAB donor to the terminal.
  • the wireless link Uu interface
  • IAB nodes are connected through wireless links, namely Uu interfaces.
  • the scheduling method based on the non-IAB network does not consider the remaining number of hops that the DRB (Data Radio Bearer) has to go through from the current IAB node to the target node. For example, for two Two DRBs with the same QoS (Quality of Service, quality of service) requirements but different remaining hops should have different priorities during IAB node scheduling. DRBs with more remaining hops should be transmitted first. However, the current network cannot consider the remaining transmission hops of the DRB when scheduling, which is not conducive to network fairness.
  • DRB Data Radio Bearer
  • the purpose of the embodiments of the present disclosure is to provide a data processing method, device and IAB node for an IAB node, so as to solve the problem in the related art that the remaining transmission hops of the DRB cannot be considered during scheduling, which is not conducive to network fairness.
  • an embodiment of the present disclosure provides a data processing method for integrated access and backhaul IAB nodes, which is executed by the first IAB node, and the method includes:
  • the BAP header of the BAP PDU includes the remaining transmission hops
  • the remaining number of transmission hops is used to indicate the number of remaining transmission hops of the current data radio bearer DRB from the first IAB node to the target node.
  • the method further includes:
  • a BAP PDU is formed; the BAP header of the BAP PDU includes the remaining transmission hop count; the remaining transmission hop count is used to indicate the total hop count of the current DRB from the IAB host node to the target node.
  • the method further includes:
  • a BAP PDU is formed; the BAP header of the BAP PDU includes the remaining transmission hop count; the remaining transmission hop count is used to indicate the total hop count of the current DRB from the access IAB node to the IAB host node.
  • the method further includes:
  • a BAP PDU is formed; the BAP header of the BAP PDU includes the remaining transmission hop count; the remaining transmission hop count is used to indicate the total hop count of the current DRB from the first IAB node to the IAB host node.
  • Embodiments of the present disclosure further provide a data processing method for integrated access and backhaul IAB nodes, which is executed by a second IAB node, and the method includes:
  • the BAP header of the BAP PDU includes the number of remaining transmission hops
  • the remaining number of transmission hops is used to indicate the number of remaining transmission hops of the current data radio bearer DRB from the first IAB node to the target node.
  • the BAP header of the BAP PDU also includes: a destination address
  • the method further includes:
  • the BAP service data unit SDU is delivered to the upper layer.
  • the BAP header of the BAP PDU also includes: a destination address
  • the method further includes:
  • the BAP header of the BAP PDU also includes: a destination address
  • the method further includes:
  • the number of remaining transmission hops in the BAP header of the received BAP PDU is equal to 0 or 1, and the BAP PDU is sent to the next-hop IAB node ; wherein, the number of remaining transmission hops in the BAP header of the BAP PDU is the same as the number of remaining transmission hops in the BAP header of the received BAP PDU.
  • the value of the remaining transmission hops included in the BAP packet header is a non-negative number.
  • Embodiments of the present disclosure further provide a data processing device for integrated access and backhaul IAB nodes, which is applied to the first IAB node, including:
  • the sending unit is used to send the adaptive backhaul protocol BAP protocol data unit PDU; the BAP header of the BAP PDU includes the number of remaining transmission hops;
  • the remaining number of transmission hops is used to indicate the number of remaining transmission hops of the current data radio bearer DRB from the first IAB node to the target node.
  • Embodiments of the present disclosure further provide an IAB node, where the IAB node is a first IAB node, and includes a memory, a transceiver, and a processor;
  • a memory for storing a computer program
  • a transceiver for sending and receiving data under the control of the processor
  • a processor for reading the computer program in the memory and performing the following operations:
  • the BAP header of the BAP PDU includes the remaining transmission hops
  • the remaining number of transmission hops is used to indicate the number of remaining transmission hops of the current data radio bearer DRB from the first IAB node to the target node.
  • the processor is further configured to read the computer program in the memory and perform the following operations:
  • the first IAB node is an IAB host node, receiving a downlink data packet sent by an upper layer;
  • a BAP PDU is formed; the BAP header of the BAP PDU includes the remaining transmission hop count; the remaining transmission hop count is used to indicate the total hop count of the current DRB from the IAB host node to the target node.
  • the processor is further configured to read the computer program in the memory and perform the following operations:
  • the first IAB node is an access IAB node of the terminal, receiving an uplink data packet sent by the terminal;
  • a BAP PDU is formed; the BAP header of the BAP PDU includes the remaining transmission hop count; the remaining transmission hop count is used to indicate the total hop count of the current DRB from the access IAB node to the IAB host node.
  • the processor is further configured to read the computer program in the memory and perform the following operations:
  • a BAP PDU is formed according to the uplink data to be transmitted; the BAP header of the BAP PDU includes the remaining transmission hops; the remaining transmission hops are used for Indicates the total number of hops of the current DRB from the first IAB node to the IAB host node.
  • Embodiments of the present disclosure further provide a data processing device for integrated access and backhaul IAB nodes, which is applied to a second IAB node, including:
  • the BAP packet header of the BAP PDU includes the remaining transmission hops
  • the remaining number of transmission hops is used to indicate the number of remaining transmission hops of the current data radio bearer DRB from the first IAB node to the target node.
  • Embodiments of the present disclosure further provide an IAB node, where the IAB node is a second IAB node, including a memory, a transceiver, and a processor;
  • a memory for storing a computer program
  • a transceiver for sending and receiving data under the control of the processor
  • a processor for reading the computer program in the memory and performing the following operations:
  • the BAP header of the BAP PDU includes the number of remaining transmission hops
  • the remaining number of transmission hops is used to indicate the number of remaining transmission hops of the current data radio bearer DRB from the first IAB node to the target node.
  • the BAP header of the BAP PDU also includes: a destination address
  • the processor is also configured to read a computer program in the memory and perform the following operations:
  • the BAP service data unit SDU is delivered to the upper layer.
  • the BAP header of the BAP PDU also includes: a destination address
  • the processor is also configured to read a computer program in the memory and perform the following operations:
  • the BAP header of the BAP PDU also includes: a destination address
  • the processor is also configured to read a computer program in the memory and perform the following operations:
  • the number of remaining transmission hops in the BAP header of the received BAP PDU is equal to 0 or 1, and the BAP PDU is sent to the next-hop IAB node ; wherein, the number of remaining transmission hops in the BAP header of the BAP PDU is the same as the number of remaining transmission hops in the BAP header of the received BAP PDU.
  • the value of the remaining transmission hops included in the BAP packet header is a non-negative number.
  • Embodiments of the present disclosure further provide a processor-readable storage medium, where a computer program is stored in the processor-readable storage medium, and the computer program is used to cause the processor to execute the above method.
  • the number of remaining transmission hops that the DRB has to go through from the current IAB node to the target node is added to the BAP packet header, so that the IAB network can schedule the IAB network.
  • the remaining transmission hops of different DRBs to reduce network transmission delay.
  • FIG. 1 shows a topology diagram of an IAB network to which an embodiment of the present disclosure can be applied
  • FIG. 2 shows one of the schematic steps of the data processing method of the IAB node provided by the embodiment of the present disclosure
  • FIG. 3 shows the second schematic diagram of the steps of the data processing method of the IAB node provided by the embodiment of the present disclosure
  • FIG. 4 shows one of the schematic structural diagrams of the data processing apparatus of the IAB node provided by the embodiment of the present disclosure
  • FIG. 5 shows the second schematic structural diagram of a data processing apparatus of an IAB node provided by an embodiment of the present disclosure
  • FIG. 6 shows one of the schematic structural diagrams of an IAB node provided by an embodiment of the present disclosure
  • FIG. 7 shows the second schematic structural diagram of an IAB node provided by an embodiment of the present disclosure.
  • the term "and/or" describes the association relationship of associated objects, and indicates that there can be three kinds of relationships. For example, A and/or B can indicate that A exists alone, A and B exist at the same time, and B exists alone these three situations.
  • the character “/” generally indicates that the associated objects are an "or" relationship.
  • the term “plurality” refers to two or more than two, and other quantifiers are similar.
  • FIG. 1 shows a topology diagram of an IAB network to which an embodiment of the present disclosure can be applied.
  • IAB network deployment it consists of IAB donor (IAB host node or central control node), IAB node (IAB node 1, IAB node 2, IAB node 3, etc.) and terminals.
  • the IAB donor is used to connect the core network, transmit the information of the IAB node and terminal back to the core network, and transmit the information of the core network to the IAB node and terminal.
  • the IAB donor is also responsible for managing the IAB nodes in the entire IAB network.
  • the IAB node is responsible for relaying and transmitting the information of the terminal to the IAB node and relaying the information of the IAB donor to the terminal through the wireless link (Uu interface). Between IAB nodes, as well as between IAB nodes and IAB donors, are connected through wireless links, namely Uu interfaces.
  • the relay function of the IAB node is implemented through the BAP layer (Backhaul Adaptation Protocol layer, adaptive backhaul protocol layer) in the IAB node.
  • BAP layer Backhaul Adaptation Protocol layer, adaptive backhaul protocol layer
  • the terminal involved in the embodiments of the present application may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing device connected to a wireless modem.
  • the name of the terminal device may be different.
  • the terminal device may be called user equipment (User Equipment, UE).
  • Wireless terminal equipment can communicate with one or more core networks (Core Network, CN) via a radio access network (Radio Access Network, RAN).
  • RAN Radio Access Network
  • "telephone) and computers with mobile terminal equipment eg portable, pocket-sized, hand-held, computer-built or vehicle-mounted mobile devices, which exchange language and/or data with the radio access network.
  • Wireless terminal equipment may also be referred to as system, subscriber unit, subscriber station, mobile station, mobile station, remote station, access point , a remote terminal device (remote terminal), an access terminal device (access terminal), a user terminal device (user terminal), a user agent (user agent), and a user device (user device), which are not limited in the embodiments of the present application.
  • an embodiment of the present disclosure provides a data processing method for integrated access and backhaul IAB nodes, which is executed by a first IAB node, and the method includes:
  • Step 201 send the adaptive backhaul protocol BAP protocol data unit PDU; the BAP header of the BAP PDU includes the remaining transmission hop count; wherein, the remaining transmission hop count is used to indicate the current data radio bearer DRB from the first IAB node to the target The node's remaining transmission hops.
  • the number of remaining transmission hops that the DRB has to go through from the current IAB node to the target node is added in the BAP packet header, so that the remaining number of transmission hops of different DRBs can be considered in the IAB network scheduling, so as to reduce the network transmission delay .
  • the method further includes:
  • a BAP PDU is formed; the BAP header of the BAP PDU includes the remaining transmission hop count; the remaining transmission hop count is used to indicate the total hop count of the current DRB from the IAB host node to the target node.
  • the IAB-donor adds the remaining transmission hops of the DRB in the BAP header when building a BAP PDU.
  • the remaining transmission hops of the current DRB means that the DRB completes end-to-end transmission from the IAB donor to the target IAB node. the total number of hops.
  • IAB node 1 is a parent node of IAB node 2
  • IAB node 3 is a child node of IAB node 2
  • IAB node 3 is a descendant node of IAB node 1 .
  • the BAP packet header includes the remaining transmission hops of 2 hops, that is, there is a relay node (IAB node) between the IAB node 2 and the IAB donor connection. 1).
  • the method further includes:
  • a BAP PDU is formed; the BAP header of the BAP PDU includes the remaining transmission hop count; the remaining transmission hop count is used to indicate the total hop count of the current DRB from the access IAB node to the IAB host node.
  • the IAB node receives the uplink data packet from the terminal.
  • the remaining transmission hops of the DRB are added to the BAP packet header.
  • the remaining transmission hops of the current DRB refers to the DRB from the current IAB node to the The total number of hops that IAB-donor completes end-to-end transmission.
  • the first IAB node is IAB node 2
  • IAB node 2 forms a BAP PDU
  • the remaining number of transmission hops of the DRB is added to the BAP packet header to 2.
  • the method further includes:
  • a BAP PDU is formed; the BAP header of the BAP PDU includes the remaining transmission hop count; the remaining transmission hop count is used to indicate the total hop count of the current DRB from the first IAB node to the IAB host node.
  • the IAB node for uplink transmission, if the IAB node itself has uplink data transmission requirements, add the remaining transmission hops of the DRB in the BAP header.
  • the remaining transmission hops of the current DRB refers to the DRB from the current IAB node to the IAB-donor completion end The total number of hops transmitted to the end. For example, as shown in FIG. 1 , the first IAB node is IAB node 3, then when IAB node 3 forms a BAP PDU, the remaining number of transmission hops of the DRB is added to the BAP packet header to 3.
  • the number of remaining transmission hops that the DRB has to go through from the current IAB node to the target node is added in the BAP header, so that the remaining transmission hops of different DRBs can be considered in the IAB network scheduling number to reduce network transmission delay.
  • an embodiment of the present disclosure further provides a data processing method for integrated access and backhauling an IAB node, which is executed by a second IAB node, and the method includes:
  • Step 301 receiving the BAP PDU sent by the first IAB node; the BAP header of the BAP PDU includes the remaining transmission hops; wherein, the remaining transmission hops is used to indicate the current data radio bearer DRB from the first IAB node to the target node. Remaining transmission hops.
  • the number of remaining transmission hops that the DRB has to go through from the current IAB node to the target node is added in the BAP packet header, so that the remaining number of transmission hops of different DRBs can be considered in the IAB network scheduling, so as to reduce the network transmission delay .
  • the first IAB node may be a node in the uplink direction of the second IAB node, or may be a node in the downlink direction of the second IAB node, which is not specifically limited herein.
  • the BAP header of the BAP PDU also includes: a destination address; the destination address is used to indicate the last IAB node in the transmission path of the DRB carried by the BAP PDU.
  • the IAB donor sends the DRB to the terminal through the relay of IAB node 1 and IAB node 2, then the destination address in the BAP header of the BAP PDU formed by the IAB donor is the address of IAB node 2.
  • the method further includes:
  • the BAP service data unit SDU is delivered to the upper layer.
  • the IAB node when the IAB node receives the BAP PDU sent by the previous hop IAB node or IAB-donor, if it finds that the destination address in the BAP header is the current IAB node, it deletes the BAP header and submits the BAP SDU to the upper layer.
  • the method further includes:
  • the IAB node when the IAB node receives the BAP PDU sent by the previous hop IAB node or IAB-donor, if it finds that the destination address in the BAP header is not the current IAB node, it reduces the number of remaining transmission hops in the BAP header by 1, and then sends to the next hop IAB node.
  • the method further includes:
  • the number of remaining transmission hops in the BAP header of the received BAP PDU is equal to 0 or 1, and the BAP PDU is sent to the next-hop IAB node ; wherein, the number of remaining transmission hops in the BAP header of the BAP PDU is the same as the number of remaining transmission hops in the BAP header of the received BAP PDU.
  • the IAB node finds that the destination address in the BAP packet header is not the current IAB node, and the remaining hop count is 1 or 0, it will not be reduced any more. When the number of remaining hops is reduced to 1 or 0 and the destination address is not reached, it indicates that local rerouting has occurred. How to schedule the routing packets can be implemented based on the specific implementation, such as prioritizing the scheduling of rerouting packets, which will not be detailed here. limited.
  • the number of remaining transmission hops that the DRB has to go through from the current IAB node to the target node is added in the BAP header, so that the remaining transmission hops of different DRBs can be considered in the IAB network scheduling number to reduce network transmission delay.
  • the IAB-donor receives the data packet from the upper layer and forms the downlink BAP PDU. Add the remaining transmission hops of the DRB in the BAP packet header, and send it to the next hop IAB node, and enter 2).
  • the remaining transmission hops of the current DRB refers to the total number of hops that the DRB completes end-to-end transmission from the IAB-donor to the target IAB node.
  • the IAB node receives the BAP PDU from the previous hop IAB node or IAB-donor.
  • the destination address in the BAP header is the current IAB node, delete the BAP header and submit the SDU to the upper layer to complete the packet transmission. (At this time, the data packet may belong to either the IAB node or the terminal connected under the IAB node).
  • the IAB node needs to continue to send the received BAP PDU to the next hop IAB node.
  • the remaining transmission hops in the BAP header are decremented by 1 (if the destination address in the BAP header is not the current IAB node, and the remaining hops are 1 or 0, Then, 1 is no longer decremented to avoid the situation that the remaining transmission hops are negative), and then it is sent to the next hop IAB node to enter 2).
  • the access IAB node receives uplink data from the terminal.
  • the IAB node first encapsulates the uplink data received from the terminal into F1 data packets and submits them to the BAP layer.
  • the BAP layer of the IAB node receives the data packets from the upper layer, it forms a BAP PDU and adds the remaining transmission hops of the DRB in the BAP packet header. number, and send it to the next hop IAB node, access 2).
  • the remaining transmission hops of the current DRB refers to the total number of hops that the DRB completes end-to-end transmission from the current IAB node to the IAB-donor.
  • the IAB node receives the BAP PDU from the previous hop IAB node.
  • the IAB node When the IAB node receives the BAP PDU sent by the IAB node of the previous hop, it needs to continue to send the data to the IAB node of the next hop. At this time, the remaining transmission hop count in the BAP packet header is decremented by 1 (if the destination address in the BAP packet header is found not to be the current IAB node, and the remaining hop count is 1 or 0, 1 will not be decremented to avoid the remaining transmission hop count being negative. case), and then send it to the next hop IAB node or IAB-donor. If the next hop is an IAB node, repeat 2); if the next hop is an IAB-donor, go to 3).
  • the IAB-donor receives data from the previous hop IAB node.
  • the IAB-donor When the IAB-donor receives the BAP PDU sent by the IAB node of the previous hop, it deletes the BAP header and submits the SDU to the upper layer to complete the transmission of the data packet.
  • an embodiment of the present disclosure further provides a data processing device for integrated access and backhaul IAB nodes, which is applied to the first IAB node, including:
  • the sending unit 401 is used for sending the adaptive backhaul protocol BAP protocol data unit PDU; the BAP header of the BAP PDU includes the remaining transmission hops;
  • the remaining number of transmission hops is used to indicate the number of remaining transmission hops of the current data radio bearer DRB from the first IAB node to the target node.
  • the apparatus when the first IAB node is an IAB host node, the apparatus further includes:
  • a first data receiving unit configured to receive a downlink data packet sent by an upper layer
  • the first forming unit is used to form a BAP PDU according to the downlink data packet; the BAP header of the BAP PDU includes the remaining transmission hops; the remaining transmission hops are used to indicate that the current DRB is from the IAB host node to the target node the total number of hops.
  • the apparatus when the first IAB node is an access IAB node of the terminal, the apparatus further includes:
  • a second data receiving unit configured to receive an uplink data packet sent by the terminal
  • the second forming unit is used to form a BAP PDU according to the uplink data packet; the BAP packet header of the BAP PDU includes the remaining transmission hop count; the remaining transmission hop count is used to indicate the current DRB from the access IAB node to the IAB The total hop count of the host node.
  • the apparatus when the first IAB node itself has an uplink data transmission requirement, the apparatus further includes:
  • the third forming unit is used to form a BAP PDU according to the uplink data to be transmitted; the BAP header of the BAP PDU includes the remaining transmission hops; the remaining transmission hops are used to indicate the current DRB from the first IAB node to the IAB The total hop count of the host node.
  • the remaining number of transmission hops that the DRB has to go through from the current IAB node to the target node is added in the BAP packet header, so that the remaining number of transmission hops of different DRBs can be considered in the IAB network scheduling, so that the Reduce network transmission delay.
  • an embodiment of the present disclosure further provides a data processing device for integrated access and backhaul IAB nodes, which is applied to a second IAB node, including:
  • the receiving unit 501 is used for receiving the BAP PDU sent by the first IAB node; the BAP packet header of the BAP PDU includes the remaining transmission hops;
  • the remaining number of transmission hops is used to indicate the number of remaining transmission hops of the current data radio bearer DRB from the first IAB node to the target node.
  • the BAP header of the BAP PDU further includes: a destination address; the apparatus further includes:
  • the first processing unit is configured to, if the destination address in the BAP header of the received BAP PDU is the address of the second IAB node, delete the BAP header and submit the BAP service data unit SDU to the upper layer.
  • the BAP header of the BAP PDU further includes: a destination address; the apparatus further includes:
  • the second processing unit is configured to send the BAP PDU to the next-hop IAB node if the destination address in the BAP packet header of the received BAP PDU is not the address of the second IAB node; wherein, the remaining BAP packet header in the BAP PDU
  • the number of transmission hops is the number of remaining transmission hops in the BAP header of the received BAP PDU minus 1.
  • the BAP header of the BAP PDU further includes: a destination address; the apparatus further includes:
  • the third processing unit is used for if the destination address in the BAP packet header of the received BAP PDU is not the address of the second IAB node, the number of remaining transmission hops in the BAP packet header of the received BAP PDU is equal to 0 or 1, and downward
  • the one-hop IAB node sends a BAP PDU; wherein, the number of remaining transmission hops in the BAP header of the BAP PDU is the same as the number of remaining transmission hops in the BAP header of the received BAP PDU.
  • the value of the remaining transmission hop count included in the BAP packet header is a non-negative number.
  • the remaining number of transmission hops that the DRB has to go through from the current IAB node to the target node is added in the BAP packet header, so that the remaining number of transmission hops of different DRBs can be considered in the IAB network scheduling, so that the Reduce network transmission delay.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.
  • the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a processor-readable storage medium.
  • the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the related technology, or all or part of the technical solution, and the computer software product is stored in a storage medium.
  • a computer device which may be a personal computer, a server, or a network device, etc.
  • a processor processor
  • the aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes .
  • an embodiment of the present disclosure further provides an IAB node, where the IAB node is a first IAB node, and includes a memory 620, a transceiver 610, and a processor 600;
  • the memory 620 is used to store computer programs; the transceiver 610 is used to send and receive data under the control of the processor; the processor 600 is used to read the computer programs in the memory and perform the following operations:
  • the BAP header of the BAP PDU includes the remaining transmission hops
  • the remaining number of transmission hops is used to indicate the number of remaining transmission hops of the current data radio bearer DRB from the first IAB node to the target node.
  • processor 600 is further configured to read the computer program in the memory and perform the following operations:
  • the first IAB node is an IAB host node, receiving a downlink data packet sent by an upper layer;
  • a BAP PDU is formed; the BAP header of the BAP PDU includes the remaining transmission hop count; the remaining transmission hop count is used to indicate the total hop count of the current DRB from the IAB host node to the target node.
  • processor 600 is further configured to read the computer program in the memory and perform the following operations:
  • the first IAB node is an access IAB node of the terminal, receiving an uplink data packet sent by the terminal;
  • a BAP PDU is formed; the BAP header of the BAP PDU includes the remaining transmission hop count; the remaining transmission hop count is used to indicate the total hop count of the current DRB from the access IAB node to the IAB host node.
  • processor 600 is further configured to read the computer program in the memory and perform the following operations:
  • a BAP PDU is formed according to the uplink data to be transmitted; the BAP header of the BAP PDU includes the remaining transmission hops; the remaining transmission hops are used for Indicates the total number of hops of the current DRB from the first IAB node to the IAB host node.
  • the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 600 and various circuits of memory represented by memory 620 are linked together.
  • the bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein.
  • the bus interface provides the interface.
  • Transceiver 610 may be multiple elements, ie, including transmitters and receivers, providing means for communicating with various other devices over transmission media including wireless channels, wired channels, fiber optic cables, and the like.
  • the processor 600 is responsible for managing the bus architecture and general processing, and the memory 620 may store data used by the processor 600 in performing operations.
  • the processor 600 may be a central processor (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (Field-Programmable Gate Array, FPGA) or a complex programmable logic device (Complex Programmable Logic Device). , CPLD), the processor can also use a multi-core architecture.
  • CPU central processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • FPGA field programmable gate array
  • CPLD Complex Programmable Logic Device
  • the remaining number of transmission hops that the DRB has to go through from the current IAB node to the target node is added in the BAP packet header, so that the remaining number of transmission hops of different DRBs can be considered in the IAB network scheduling, so that the Reduce network transmission delay.
  • the IAB node provided by the implementation of the present disclosure is an IAB node capable of executing the above method, and all embodiments of the above method are applicable to the IAB node, and can achieve the same or similar beneficial effects.
  • an embodiment of the present disclosure further provides an IAB node, where the IAB node is a second IAB node, and includes a memory 720, a transceiver 710, and a processor 700;
  • the memory 720 is used to store computer programs; the transceiver 710 is used to send and receive data under the control of the processor; the processor 700 is used to read the computer program in the memory and perform the following operations:
  • the BAP header of the BAP PDU includes the number of remaining transmission hops
  • the remaining number of transmission hops is used to indicate the number of remaining transmission hops of the current data radio bearer DRB from the first IAB node to the target node.
  • the BAP header of the BAP PDU further includes: a destination address
  • the processor 700 is further configured to read the computer program in the memory and perform the following operations:
  • the BAP service data unit SDU is delivered to the upper layer.
  • the BAP header of the BAP PDU further includes: a destination address
  • the processor 700 is further configured to read the computer program in the memory and perform the following operations:
  • the BAP header of the BAP PDU further includes: a destination address
  • the processor 700 is further configured to read the computer program in the memory and perform the following operations:
  • the number of remaining transmission hops in the BAP header of the received BAP PDU is equal to 0 or 1, and the BAP PDU is sent to the next-hop IAB node ; wherein, the number of remaining transmission hops in the BAP header of the BAP PDU is the same as the number of remaining transmission hops in the BAP header of the received BAP PDU.
  • the value of the remaining transmission hop count included in the BAP packet header is a non-negative number.
  • the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 700 and various circuits of memory represented by memory 720 are linked together.
  • the bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein.
  • the bus interface provides the interface.
  • Transceiver 710 may be multiple elements, ie, including a transmitter and a receiver, providing means for communicating with various other devices over transmission media including wireless channels, wired channels, fiber optic cables, and the like.
  • the processor 700 is responsible for managing the bus architecture and general processing, and the memory 720 may store data used by the processor 700 in performing operations.
  • the processor 700 may be a central processor (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or a complex programmable logic device (Complex Programmable Logic Device). , CPLD), the processor can also use a multi-core architecture.
  • CPU central processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • CPLD complex programmable logic device
  • the IAB node provided by the implementation of the present disclosure is an IAB node capable of executing the above method, and all embodiments of the above method are applicable to the IAB node, and can achieve the same or similar beneficial effects.
  • Embodiments of the present disclosure further provide a processor-readable storage medium, where a computer program is stored in the processor-readable storage medium, and the computer program is used to cause the processor to execute the above method.
  • the processor-readable storage medium can be any available medium or data storage device that can be accessed by a processor, including, but not limited to, magnetic storage (eg, floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical storage (eg. CD, DVD, BD, HVD, etc.), and semiconductor memory (eg, ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state disk (SSD)), etc.
  • magnetic storage eg, floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.
  • optical storage eg. CD, DVD, BD, HVD, etc.
  • semiconductor memory eg, ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state disk (SSD)
  • the embodiments of the present application may be provided as a method, a system, or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media having computer-usable program code embodied therein, including but not limited to disk storage, optical storage, and the like.
  • processor-executable instructions may also be stored in a processor-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the processor-readable memory result in the manufacture of means comprising the instructions product, the instruction means implements the functions specified in the flow or flow of the flowchart and/or the block or blocks of the block diagram.
  • processor-executable instructions can also be loaded onto a computer or other programmable data processing device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process that Execution of the instructions provides steps for implementing the functions specified in the flowchart or blocks and/or the block or blocks of the block diagrams.

Abstract

本公开实施例提供一种IAB节点的数据处理方法、装置及IAB节点，该方法包括：第一IAB节点发送BAP PDU；BAP PDU的BAP包头中包括剩余传输跳数；其中，所述剩余传输跳数用于指示当前数据无线承载DRB从第一IAB节点到目标节点的剩余传输跳数。

Description

IAB节点的数据处理方法、装置及IAB节点
相关申请的交叉引用
本申请主张在2020年12月18日在中国提交的中国专利申请号No.202011509306.1的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及通信技术领域，尤其是指一种IAB节点的数据处理方法、装置及IAB节点。
背景技术
IAB(Integrated Access and Backhaul，整合接入回传)网络技术通过多个节点间的中继无线信号，从而达到扩大基站覆盖范围的目的。
随着IAB技术的进一步发展，IAB网络的拓扑公平性尤为重要，IAB网络通过多跳增强覆盖的同时也增大了端到端的传输时延。在IAB网络部署中，由IAB donor(IAB宿主节点或者中央控制节点)，IAB节点和终端组成。IAB donor用于连接核心网，把IAB节点和终端的信息回传给核心网，并将核心网的信息传输给IAB节点和终端。IAB donor还负责管理整个IAB网络中的IAB节点。IAB节点通过无线链路(Uu接口)，负责将终端的信息中继传输给IAB donor，并将IAB donor的信息中继传输给终端。IAB节点之间，以及IAB节点和IAB donor之间通过无线链路连接，即Uu接口。
对于相关技术中IAB网络，在调度时基于非IAB网络的调度方法，没有考虑DRB(Data Radio Bearer，数据无线承载)从当前IAB节点到目标节点还要经历的剩余跳数，例如，对于两个具有相同QoS(Quality of Service，服务质量)要求，但剩余跳数不同的两个DRB，在IAB节点调度时的优先级应该是不同的，在可以保障剩余跳数少的DRB的QoS情况下，应该优先传输剩余跳数多的DRB。而当前网络在做调度时无法考虑DRB的剩余传输跳数，不利于网络公平性。
发明内容
本公开实施例的目的在于提供一种IAB节点的数据处理方法、装置及IAB节点，以解决相关技术中在做调度时无法考虑DRB的剩余传输跳数，不利于网络公平性的问题。
为了解决上述问题，本公开实施例提供一种整合接入回传IAB节点的数据处理方法，由第一IAB节点执行，该方法包括：
发送适应性回传协议BAP协议数据单元PDU；BAP PDU的BAP包头中包括剩余传输跳数；
其中，所述剩余传输跳数用于指示当前数据无线承载DRB从第一IAB节点到目标节点的剩余传输跳数。
其中，在所述第一IAB节点为IAB宿主节点的情况下，所述发送适应性回传协议BAP协议数据单元PDU之前，所述方法还包括：
接收上层发送的下行数据包；
根据所述下行数据包，组建BAP PDU；所述BAP PDU的BAP包头中包括剩余传输跳数；所述剩余传输跳数用于指示当前DRB从IAB宿主节点到目标节点的总跳数。
其中，在所述第一IAB节点为终端的接入IAB节点的情况下，所述发送适应性回传协议BAP协议数据单元PDU之前，所述方法还包括：
接收终端发送的上行数据包；
根据所述上行数据包，组建BAP PDU；所述BAP PDU的BAP包头中包括剩余传输跳数；所述剩余传输跳数用于指示当前DRB从接入IAB节点到IAB宿主节点的总跳数。
其中，在所述第一IAB节点自身有上行数据传输需求的情况下，所述发送适应性回传协议BAP协议数据单元PDU之前，所述方法还包括：
根据待传输的上行数据，组建BAP PDU；所述BAP PDU的BAP包头中包括剩余传输跳数；所述剩余传输跳数用于指示当前DRB从第一IAB节点到IAB宿主节点的总跳数。
本公开实施例还提供一种整合接入回传IAB节点的数据处理方法，由第二IAB节点执行，该方法包括：
接收第一IAB节点发送的BAP PDU；BAP PDU的BAP包头中包括剩余传输跳数；
其中，所述剩余传输跳数用于指示当前数据无线承载DRB从第一IAB节点到目标节点的剩余传输跳数。
其中，所述BAP PDU的BAP包头中还包括：目的地址；
接收第一IAB节点发送的BAP PDU之后，所述方法还包括：
若接收到的BAP PDU的BAP包头中目的地址为所述第二IAB节点的地址，删除BAP包头后将BAP服务数据单元SDU递交给上层。
其中，所述BAP PDU的BAP包头中还包括：目的地址；
接收第一IAB节点发送的BAP PDU之后，所述方法还包括：
若接收到的BAP PDU的BAP包头中目的地址不是所述第二IAB节点的地址，向下一跳IAB节点发送BAP PDU；其中，该BAP PDU的BAP包头中的剩余传输跳数为接收到的BAP PDU的BAP包头中的剩余传输跳数减1。
其中，所述BAP PDU的BAP包头中还包括：目的地址；
接收第一IAB节点发送的BAP PDU之后，所述方法还包括：
若接收到的BAP PDU的BAP包头中目的地址不是所述第二IAB节点的地址，接收到的BAP PDU的BAP包头中的剩余传输跳数等于0或1，向下一跳IAB节点发送BAP PDU；其中，该BAP PDU的BAP包头中的剩余传输跳数与接收到的BAP PDU的BAP包头中的剩余传输跳数相同。
其中，所述BAP包头中包括的剩余传输跳数的取值为非负数。
本公开实施例还提供一种整合接入回传IAB节点的数据处理装置，应用于第一IAB节点，包括：
发送单元，用于发送适应性回传协议BAP协议数据单元PDU；BAP PDU的BAP包头中包括剩余传输跳数；
其中，所述剩余传输跳数用于指示当前数据无线承载DRB从第一IAB节点到目标节点的剩余传输跳数。
本公开实施例还提供一种IAB节点，该IAB节点为第一IAB节点，包括存储器，收发机，处理器；
存储器，用于存储计算机程序；收发机，用于在所述处理器的控制下收 发数据；处理器，用于读取所述存储器中的计算机程序并执行以下操作：
发送适应性回传协议BAP协议数据单元PDU；BAP PDU的BAP包头中包括剩余传输跳数；
其中，所述剩余传输跳数用于指示当前数据无线承载DRB从第一IAB节点到目标节点的剩余传输跳数。
其中，所述处理器还用于读取所述存储器中的计算机程序并执行以下操作：
在所述第一IAB节点为IAB宿主节点的情况下，接收上层发送的下行数据包；
根据所述下行数据包，组建BAP PDU；所述BAP PDU的BAP包头中包括剩余传输跳数；所述剩余传输跳数用于指示当前DRB从IAB宿主节点到目标节点的总跳数。
其中，所述处理器还用于读取所述存储器中的计算机程序并执行以下操作：
在所述第一IAB节点为终端的接入IAB节点的情况下，接收终端发送的上行数据包；
根据所述上行数据包，组建BAP PDU；所述BAP PDU的BAP包头中包括剩余传输跳数；所述剩余传输跳数用于指示当前DRB从接入IAB节点到IAB宿主节点的总跳数。
其中，所述处理器还用于读取所述存储器中的计算机程序并执行以下操作：
在所述第一IAB节点自身有上行数据传输需求的情况下，根据待传输的上行数据，组建BAP PDU；所述BAP PDU的BAP包头中包括剩余传输跳数；所述剩余传输跳数用于指示当前DRB从第一IAB节点到IAB宿主节点的总跳数。
本公开实施例还提供一种整合接入回传IAB节点的数据处理装置，应用于第二IAB节点，包括：
接收单元，用于接收第一IAB节点发送的BAP PDU；BAP PDU的BAP包头中包括剩余传输跳数；
其中，所述剩余传输跳数用于指示当前数据无线承载DRB从第一IAB节点到目标节点的剩余传输跳数。
本公开实施例还提供一种IAB节点，该IAB节点为第二IAB节点，包括存储器，收发机，处理器；
存储器，用于存储计算机程序；收发机，用于在所述处理器的控制下收发数据；处理器，用于读取所述存储器中的计算机程序并执行以下操作：
接收第一IAB节点发送的BAP PDU；BAP PDU的BAP包头中包括剩余传输跳数；
其中，所述剩余传输跳数用于指示当前数据无线承载DRB从第一IAB节点到目标节点的剩余传输跳数。
其中，所述BAP PDU的BAP包头中还包括：目的地址；
所述处理器还用于读取所述存储器中的计算机程序并执行以下操作：
若接收到的BAP PDU的BAP包头中目的地址为所述第二IAB节点的地址，删除BAP包头后将BAP服务数据单元SDU递交给上层。
其中，所述BAP PDU的BAP包头中还包括：目的地址；
所述处理器还用于读取所述存储器中的计算机程序并执行以下操作：
若接收到的BAP PDU的BAP包头中目的地址不是所述第二IAB节点的地址，向下一跳IAB节点发送BAP PDU；其中，该BAP PDU的BAP包头中的剩余传输跳数为接收到的BAP PDU的BAP包头中的剩余传输跳数减1。
其中，所述BAP PDU的BAP包头中还包括：目的地址；
所述处理器还用于读取所述存储器中的计算机程序并执行以下操作：
若接收到的BAP PDU的BAP包头中目的地址不是所述第二IAB节点的地址，接收到的BAP PDU的BAP包头中的剩余传输跳数等于0或1，向下一跳IAB节点发送BAP PDU；其中，该BAP PDU的BAP包头中的剩余传输跳数与接收到的BAP PDU的BAP包头中的剩余传输跳数相同。
其中，所述BAP包头中包括的剩余传输跳数的取值为非负数。
本公开实施例还提供一种处理器可读存储介质，所述处理器可读存储介质存储有计算机程序，所述计算机程序用于使所述处理器执行如上所述的方法。
本公开的上述技术方案至少具有如下有益效果：
本公开实施例的IAB节点的数据处理方法、装置及IAB节点中，IAB网络中在BAP包头中增加DRB从当前IAB节点到目标节点还要经历的剩余传输跳数，从而使得IAB网络调度时能够考虑不同DRB的剩余传输跳数，以降低网络传输时延。
附图说明
图1表示本公开实施例可应用的一种IAB网络的拓扑图；
图2表示本公开实施例提供的IAB节点的数据处理方法的步骤示意图之一；
图3表示本公开实施例提供的IAB节点的数据处理方法的步骤示意图之二；
图4表示本公开实施例提供的IAB节点的数据处理装置的结构示意图之一；
图5表示本公开实施例提供的IAB节点的数据处理装置的结构示意图之二；
图6表示本公开实施例提供的IAB节点的结构示意图之一；
图7表示本公开实施例提供的IAB节点的结构示意图之二。
具体实施方式
为使本公开要解决的技术问题、技术方案和优点更加清楚，下面将结合附图及具体实施例进行详细描述。
本公开实施例中术语“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。
本申请实施例中术语“多个”是指两个或两个以上，其它量词与之类似。
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、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，并不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做 出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
图1示出本公开实施例可应用的一种IAB网络的拓扑图。IAB网络部署中，由IAB donor(IAB宿主节点或者中央控制节点)，IAB节点(IAB节点1、IAB节点2、IAB节点3等)和终端组成。IAB donor用于连接核心网，把IAB节点和终端的信息回传给核心网，并将核心网的信息传输给IAB节点和终端。IAB donor还负责管理整个IAB网络中的IAB节点。
IAB节点通过无线链路(Uu接口)，负责将终端的信息中继传输给IAB节点并将IAB donor的信息中继传输给终端。IAB节点之间，以及IAB节点和IAB donor之间通过无线链路连接，即Uu接口。
IAB节点的中继功能通过IAB节点中的BAP层(Backhaul Adaptation Protocol layer，适应性回传协议层)实现。
本申请实施例涉及的终端，可以是指向用户提供语音和/或数据连通性的设备，具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备等。在不同的系统中，终端设备的名称可能也不相同，例如在5G系统中，终端设备可以称为用户设备(User Equipment，UE)。无线终端设备可以经无线接入网(Radio Access Network,RAN)与一个或多个核心网(Core Network,CN)进行通信，无线终端设备可以是移动终端设备，如移动电话(或称为“蜂窝”电话)和具有移动终端设备的计算机，例如，可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语言和/或数据。例如，个人通信业务(Personal Communication Service，PCS)电话、无绳电话、会话发起协议(Session Initiated Protocol，SIP)话机、无线本地环路(Wireless Local Loop，WLL)站、个人数字助理(Personal Digital Assistant，PDA)等设备。无线终端设备也可以称为系统、订户单元(subscriber unit)、订户站(subscriber station)，移动站(mobile station)、移动台(mobile)、远程站(remote station)、接入点(access point)、远程终端设备(remote terminal)、接入终端设备(access terminal)、用户终端设备(user terminal)、用户代理(user agent)、用户装置(user device)，本申请实施例中并不限定。
如图2所示，本公开实施例提供一种整合接入回传IAB节点的数据处理方法，由第一IAB节点执行，该方法包括：
步骤201，发送适应性回传协议BAP协议数据单元PDU；BAP PDU的BAP包头中包括剩余传输跳数；其中，所述剩余传输跳数用于指示当前数据无线承载DRB从第一IAB节点到目标节点的剩余传输跳数。
本公开实施例中，在BAP包头中增加DRB从当前IAB节点到目标节点还要经历的剩余传输跳数，从而使得IAB网络调度时能够考虑不同DRB的剩余传输跳数，以降低网络传输时延。
需要说明的是，该数据处理方法既适用于上行传输，也适用于下行传输。
作为一个可选实施例，在下行传输中，在所述第一IAB节点为IAB宿主节点(即IAB donor)的情况下，步骤201之前，所述方法还包括：
接收上层发送的下行数据包；
根据所述下行数据包，组建BAP PDU；所述BAP PDU的BAP包头中包括剩余传输跳数；所述剩余传输跳数用于指示当前DRB从IAB宿主节点到目标节点的总跳数。
换言之，对于下行传输，IAB-donor在组建BAP PDU时，在BAP包头中增加DRB的剩余传输跳数，当前DRB的剩余传输跳数是指，DRB从IAB donor到目标IAB节点完成端到端传输的总跳数。例如，如图1所示，IAB节点1为IAB节点2的母节点，IAB节点3为IAB节点2的子节点，IAB节点3为IAB节点1的子孙节点。IAB-donor组建BAP PDU时，若下行数据包是发送给终端的，则BAP包头中包括剩余传输跳数为2跳，即IAB节点2到IAB donor连接之间存在一个作为中继节点(IAB节点1)。
作为另一个可选实施例，在上行传输中，在所述第一IAB节点为终端的接入IAB节点的情况下，步骤201之前，所述方法还包括：
接收终端发送的上行数据包；
根据所述上行数据包，组建BAP PDU；所述BAP PDU的BAP包头中包括剩余传输跳数；所述剩余传输跳数用于指示当前DRB从接入IAB节点到IAB宿主节点的总跳数。
换言之，对于上行传输，IAB节点从终端接收到上行数据包，在组建BAP PDU时，在BAP包头中增加DRB的剩余传输跳数，当前DRB的剩余传输跳数是指，DRB从当前IAB节点到IAB-donor完成端到端传输的总跳数。例 如，如图1所示，第一IAB节点为IAB节点2，则IAB节点2在组建BAP PDU时，在BAP包头中增加DRB的剩余传输跳数为2。
作为又一个可选实施例，在上行传输中，在所述第一IAB节点自身有上行数据传输需求的情况下，步骤201之前，所述方法还包括：
根据待传输的上行数据，组建BAP PDU；所述BAP PDU的BAP包头中包括剩余传输跳数；所述剩余传输跳数用于指示当前DRB从第一IAB节点到IAB宿主节点的总跳数。
换言之，对于上行传输，若IAB节点自身有上行数据传输需求时，在BAP包头中增加DRB的剩余传输跳数，当前DRB的剩余传输跳数是指，DRB从当前IAB节点到IAB-donor完成端到端传输的总跳数。例如，如图1所示，第一IAB节点为IAB节点3，则IAB节点3在组建BAP PDU时，在BAP包头中增加DRB的剩余传输跳数为3。
综上，在本公开实施例提供的IAB网络中，在BAP包头中增加DRB从当前IAB节点到目标节点还要经历的剩余传输跳数，从而使得IAB网络调度时能够考虑不同DRB的剩余传输跳数，以降低网络传输时延。
如图3所示，本公开实施例还提供一种整合接入回传IAB节点的数据处理方法，由第二IAB节点执行，该方法包括：
步骤301，接收第一IAB节点发送的BAP PDU；BAP PDU的BAP包头中包括剩余传输跳数；其中，所述剩余传输跳数用于指示当前数据无线承载DRB从第一IAB节点到目标节点的剩余传输跳数。
本公开实施例中，在BAP包头中增加DRB从当前IAB节点到目标节点还要经历的剩余传输跳数，从而使得IAB网络调度时能够考虑不同DRB的剩余传输跳数，以降低网络传输时延。
需要说明的是，该数据处理方法既适用于上行传输，也适用于下行传输。即第一IAB节点可以是第二IAB节点的上行方向上的节点，也可以是第二IAB节点的下行方向上的节点，在此不做具体限定。
需要说明的是，所述BAP PDU的BAP包头中还包括：目的地址；该目标地址用于指示BAP PDU承载的DRB的传输路径中的最后一个IAB节点。例如，如图1所示，IAB donor通过IAB节点1、IAB节点2的中继将DRB 发送给终端，则IAB donor组建的BAP PDU的BAP包头中的目的地址为IAB节点2的地址。
作为一个可选实施例，步骤301之后，所述方法还包括：
若接收到的BAP PDU的BAP包头中目的地址为所述第二IAB节点的地址，删除BAP包头后将BAP服务数据单元SDU递交给上层。
换言之，IAB节点在接收到前一跳IAB节点或IAB-donor发送过来的BAP PDU时，如果发现BAP包头中的目的地址为当前IAB节点，则删除BAP包头，将BAP SDU递交给上层。
作为另一个可选实施例，步骤301之后，所述方法还包括：
若接收到的BAP PDU的BAP包头中目的地址不是所述第二IAB节点的地址，向下一跳IAB节点发送BAP PDU；其中，该BAP PDU的BAP包头中的剩余传输跳数为接收到的BAP PDU的BAP包头中的剩余传输跳数减1。
换言之，IAB节点在接收到前一跳IAB节点或IAB-donor发送过来的BAP PDU时，如果发现BAP包头中的目的地址不是当前IAB节点，将BAP包头中的剩余传输跳数减1，再发送给下一跳IAB节点。
因为本地的重路由可能会导致传输路径的改变，造成实际传输跳数，大于最初所选择路径的端到端跳数，需要说明的是，所述BAP包头中包括的剩余传输跳数的取值为非负数。即本公开实施例应避免剩余传输跳数减为负数的情况发生。故作为又一个可选实施例，步骤301之后，所述方法还包括：
若接收到的BAP PDU的BAP包头中目的地址不是所述第二IAB节点的地址，接收到的BAP PDU的BAP包头中的剩余传输跳数等于0或1，向下一跳IAB节点发送BAP PDU；其中，该BAP PDU的BAP包头中的剩余传输跳数与接收到的BAP PDU的BAP包头中的剩余传输跳数相同。
换言之，如果IAB节点发现BAP包头中的目的地址不是当前IAB节点，并且剩余跳数为1或0，则不再减少。当剩余跳数减为1或0，且没有达到目的地址时，说明时发生了本地的重路由，如何调度路由的包可以基于具体实现，例如优先调度重路由的数据包，在此不做具体限定。
综上，在本公开实施例提供的IAB网络中，在BAP包头中增加DRB从当前IAB节点到目标节点还要经历的剩余传输跳数，从而使得IAB网络调度 时能够考虑不同DRB的剩余传输跳数，以降低网络传输时延。
为了更清楚的描述本公开实施提供的IAB节点的数据处理方法，下面分别结合上行传输和下行传输来进行详细说明。
示例一，下行传输
1)IAB-donor从上层接收到数据包，组建下行BAP PDU。在BAP包头中增加DRB的剩余传输跳数，并发送给下一跳IAB节点，进入2)。当前DRB的剩余传输跳数是指，DRB从IAB-donor到目标IAB节点完成端到端传输的总跳数。
2)IAB节点从前一跳IAB节点或IAB-donor中接收到BAP PDU。
存在以下两种情况：
a.如果BAP包头中的目的地址不是当前IAB节点，进入3)。
b.如果BAP包头中的目的地址为当前IAB节点，删除BAP包头，并将此SDU递交给上层后完成数据包的传输。(此时，数据包既可能是IAB节点的也可能是IAB节点下连接的终端的)。
3)IAB节点需要将接收到BAP PDU继续向下一跳IAB节点发送。
IAB节点需要将接收到BAP PDU继续向下一跳IAB节点发送时，BAP包头中的剩余传输跳数减1(如果BAP包头中的目的地址不是当前IAB节点，并且剩余跳数为1或0，则不再减1，避免产生剩余传输跳数为负数的情况)，然后再发送给下一跳IAB节点，进入2)。
示例二，上行传输
1)接入IAB节点从终端接收到上行数据。
IAB节点首先将接收到来自终端的上行数据封装成F1数据包并递交给BAP层，IAB节点的BAP层接到上层来的数据包时候，组建BAP PDU，在BAP包头中增加DRB的剩余传输跳数，并发送给下一跳IAB节点，接入2)。当前DRB的剩余传输跳数是指，DRB从当前IAB节点到IAB-donor完成端到端传输的总跳数。
2)IAB节点从前一跳IAB节点接收到BAP PDU。
IAB节点在接收到前一跳IAB节点发送过来的BAP PDU时，需要将数据继续发送给下一跳的IAB节点。此时让BAP包头中的剩余传输跳数减1(如 果发现BAP包头中的目的地址不是当前IAB节点，并且剩余跳数为1或0，则不再减1，避免产生剩余传输跳数为负数的情况)，再发送给下一跳IAB节点或IAB-donor。如果下一跳是IAB节点，重复2)；如果下一跳为IAB-donor，进入3)。
3)IAB-donor从前一跳IAB节点接收到数据。
IAB-donor在接收到前一跳IAB节点发送过来的BAP PDU时，删除BAP包头，并将此SDU递交给上层完成数据包的传输。
如图4所示，本公开实施例还提供一种整合接入回传IAB节点的数据处理装置，应用于第一IAB节点，包括：
发送单元401，用于发送适应性回传协议BAP协议数据单元PDU；BAP PDU的BAP包头中包括剩余传输跳数；
其中，所述剩余传输跳数用于指示当前数据无线承载DRB从第一IAB节点到目标节点的剩余传输跳数。
作为一个可选实施例，在所述第一IAB节点为IAB宿主节点的情况下，所述装置还包括：
第一数据接收单元，用于接收上层发送的下行数据包；
第一组建单元，用于根据所述下行数据包，组建BAP PDU；所述BAP PDU的BAP包头中包括剩余传输跳数；所述剩余传输跳数用于指示当前DRB从IAB宿主节点到目标节点的总跳数。
作为一个可选实施例，在所述第一IAB节点为终端的接入IAB节点的情况下，所述装置还包括：
第二数据接收单元，用于接收终端发送的上行数据包；
第二组建单元，用于根据所述上行数据包，组建BAP PDU；所述BAP PDU的BAP包头中包括剩余传输跳数；所述剩余传输跳数用于指示当前DRB从接入IAB节点到IAB宿主节点的总跳数。
作为一个可选实施例，在所述第一IAB节点自身有上行数据传输需求的情况下，所述装置还包括：
第三组建单元，用于根据待传输的上行数据，组建BAP PDU；所述BAP PDU的BAP包头中包括剩余传输跳数；所述剩余传输跳数用于指示当前DRB 从第一IAB节点到IAB宿主节点的总跳数。
在本公开实施例提供的IAB网络中，在BAP包头中增加DRB从当前IAB节点到目标节点还要经历的剩余传输跳数，从而使得IAB网络调度时能够考虑不同DRB的剩余传输跳数，以降低网络传输时延。
如图5所示，本公开实施例还提供一种整合接入回传IAB节点的数据处理装置，应用于第二IAB节点，包括：
接收单元501，用于接收第一IAB节点发送的BAP PDU；BAP PDU的BAP包头中包括剩余传输跳数；
其中，所述剩余传输跳数用于指示当前数据无线承载DRB从第一IAB节点到目标节点的剩余传输跳数。
作为一个可选实施例，所述BAP PDU的BAP包头中还包括：目的地址；所述装置还包括：
第一处理单元，用于若接收到的BAP PDU的BAP包头中目的地址为所述第二IAB节点的地址，删除BAP包头后将BAP服务数据单元SDU递交给上层。
作为一个可选实施例，所述BAP PDU的BAP包头中还包括：目的地址；所述装置还包括：
第二处理单元，用于若接收到的BAP PDU的BAP包头中目的地址不是所述第二IAB节点的地址，向下一跳IAB节点发送BAP PDU；其中，该BAP PDU的BAP包头中的剩余传输跳数为接收到的BAP PDU的BAP包头中的剩余传输跳数减1。
作为一个可选实施例，所述BAP PDU的BAP包头中还包括：目的地址；所述装置还包括：
第三处理单元，用于若接收到的BAP PDU的BAP包头中目的地址不是所述第二IAB节点的地址，接收到的BAP PDU的BAP包头中的剩余传输跳数等于0或1，向下一跳IAB节点发送BAP PDU；其中，该BAP PDU的BAP包头中的剩余传输跳数与接收到的BAP PDU的BAP包头中的剩余传输跳数相同。
作为一个可选实施例，所述BAP包头中包括的剩余传输跳数的取值为非 负数。
在本公开实施例提供的IAB网络中，在BAP包头中增加DRB从当前IAB节点到目标节点还要经历的剩余传输跳数，从而使得IAB网络调度时能够考虑不同DRB的剩余传输跳数，以降低网络传输时延。
进一步需要说明的是，本申请实施例中对单元的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个处理器可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对相关技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)或处理器(processor)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
在此需要说明的是，本公开实施例提供的上述装置，能够实现上述方法实施例所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
如图6所示，本公开实施例还提供一种IAB节点，该IAB节点为第一IAB节点，包括存储器620，收发机610，处理器600；
存储器620，用于存储计算机程序；收发机610，用于在所述处理器的控制下收发数据；处理器600，用于读取所述存储器中的计算机程序并执行以下操作：
发送适应性回传协议BAP协议数据单元PDU；BAP PDU的BAP包头中包括剩余传输跳数；
其中，所述剩余传输跳数用于指示当前数据无线承载DRB从第一IAB 节点到目标节点的剩余传输跳数。
作为一个可选实施例，所述处理器600还用于读取所述存储器中的计算机程序并执行以下操作：
在所述第一IAB节点为IAB宿主节点的情况下，接收上层发送的下行数据包；
根据所述下行数据包，组建BAP PDU；所述BAP PDU的BAP包头中包括剩余传输跳数；所述剩余传输跳数用于指示当前DRB从IAB宿主节点到目标节点的总跳数。
作为一个可选实施例，所述处理器600还用于读取所述存储器中的计算机程序并执行以下操作：
在所述第一IAB节点为终端的接入IAB节点的情况下，接收终端发送的上行数据包；
根据所述上行数据包，组建BAP PDU；所述BAP PDU的BAP包头中包括剩余传输跳数；所述剩余传输跳数用于指示当前DRB从接入IAB节点到IAB宿主节点的总跳数。
作为一个可选实施例，所述处理器600还用于读取所述存储器中的计算机程序并执行以下操作：
在所述第一IAB节点自身有上行数据传输需求的情况下，根据待传输的上行数据，组建BAP PDU；所述BAP PDU的BAP包头中包括剩余传输跳数；所述剩余传输跳数用于指示当前DRB从第一IAB节点到IAB宿主节点的总跳数。
其中，在图6中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器600代表的一个或多个处理器和存储器620代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机610可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元，这些传输介质包括无线信道、有线信道、光缆等传输介质。处理器600负责管理总线架构和通常的处理，存储器620可以存储处理器600在执行操作时 所使用的数据。
处理器600可以是中央处埋器(CPU)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现场可编程门阵列(Field－Programmable Gate Array，FPGA)或复杂可编程逻辑器件(Complex Programmable Logic Device，CPLD)，处理器也可以采用多核架构。
在本公开实施例提供的IAB网络中，在BAP包头中增加DRB从当前IAB节点到目标节点还要经历的剩余传输跳数，从而使得IAB网络调度时能够考虑不同DRB的剩余传输跳数，以降低网络传输时延。
需要说明的是，本公开实施提供的IAB节点是能够执行上述方法的IAB节点，则上述方法的所有实施例均适用于该IAB节点，且均能达到相同或相似的有益效果。
如图7所示，本公开实施例还提供一种IAB节点，该IAB节点为第二IAB节点，包括存储器720，收发机710，处理器700；
存储器720，用于存储计算机程序；收发机710，用于在所述处理器的控制下收发数据；处理器700，用于读取所述存储器中的计算机程序并执行以下操作：
接收第一IAB节点发送的BAP PDU；BAP PDU的BAP包头中包括剩余传输跳数；
其中，所述剩余传输跳数用于指示当前数据无线承载DRB从第一IAB节点到目标节点的剩余传输跳数。
作为一个可选实施例，所述BAP PDU的BAP包头中还包括：目的地址；
所述处理器700还用于读取所述存储器中的计算机程序并执行以下操作：
若接收到的BAP PDU的BAP包头中目的地址为所述第二IAB节点的地址，删除BAP包头后将BAP服务数据单元SDU递交给上层。
作为一个可选实施例，所述BAP PDU的BAP包头中还包括：目的地址；
所述处理器700还用于读取所述存储器中的计算机程序并执行以下操作：
若接收到的BAP PDU的BAP包头中目的地址不是所述第二IAB节点的地址，向下一跳IAB节点发送BAP PDU；其中，该BAP PDU的BAP包头中的剩余传输跳数为接收到的BAP PDU的BAP包头中的剩余传输跳数减1。
作为一个可选实施例，所述BAP PDU的BAP包头中还包括：目的地址；
所述处理器700还用于读取所述存储器中的计算机程序并执行以下操作：
若接收到的BAP PDU的BAP包头中目的地址不是所述第二IAB节点的地址，接收到的BAP PDU的BAP包头中的剩余传输跳数等于0或1，向下一跳IAB节点发送BAP PDU；其中，该BAP PDU的BAP包头中的剩余传输跳数与接收到的BAP PDU的BAP包头中的剩余传输跳数相同。
作为一个可选实施例，所述BAP包头中包括的剩余传输跳数的取值为非负数。
其中，在图7中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器700代表的一个或多个处理器和存储器720代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机710可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元，这些传输介质包括无线信道、有线信道、光缆等传输介质。处理器700负责管理总线架构和通常的处理，存储器720可以存储处理器700在执行操作时所使用的数据。
处理器700可以是中央处埋器(CPU)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现场可编程门阵列(Field－Programmable Gate Array，FPGA)或复杂可编程逻辑器件(Complex Programmable Logic Device，CPLD)，处理器也可以采用多核架构。
需要说明的是，本公开实施提供的IAB节点是能够执行上述方法的IAB节点，则上述方法的所有实施例均适用于该IAB节点，且均能达到相同或相似的有益效果。
本公开实施例还提供一种处理器可读存储介质，所述处理器可读存储介质存储有计算机程序，所述计算机程序用于使所述处理器执行如上所述的方法。
所述处理器可读存储介质可以是处理器能够存取的任何可用介质或数据存储设备，包括但不限于磁性存储器(例如软盘、硬盘、磁带、磁光盘(MO) 等)、光学存储器(例如CD、DVD、BD、HVD等)、以及半导体存储器(例如ROM、EPROM、EEPROM、非易失性存储器(NAND FLASH)、固态硬盘(SSD))等。
本领域内的技术人员应明白，本申请的实施例可提供为方法、系统、或计算机程序产品。因此，本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形式。
本申请是参照根据本申请实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机可执行指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机可执行指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些处理器可执行指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的处理器可读存储器中，使得存储在该处理器可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些处理器可执行指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (21)

  1. 一种整合接入回传IAB节点的数据处理方法，由第一IAB节点执行，包括：
    发送适应性回传协议BAP协议数据单元PDU；BAP PDU的BAP包头中包括剩余传输跳数；
    其中，所述剩余传输跳数用于指示当前数据无线承载DRB从第一IAB节点到目标节点的剩余传输跳数。
  2. 根据权利要求1所述的方法，其中，在所述第一IAB节点为IAB宿主节点的情况下，所述发送适应性回传协议BAP协议数据单元PDU之前，所述方法还包括：
    接收上层发送的下行数据包；
    根据所述下行数据包，组建BAP PDU；所述BAP PDU的BAP包头中包括剩余传输跳数；所述剩余传输跳数用于指示当前DRB从IAB宿主节点到目标节点的总跳数。
  3. 根据权利要求1所述的方法，其中，在所述第一IAB节点为终端的接入IAB节点的情况下，所述发送适应性回传协议BAP协议数据单元PDU之前，所述方法还包括：
    接收终端发送的上行数据包；
    根据所述上行数据包，组建BAP PDU；所述BAP PDU的BAP包头中包括剩余传输跳数；所述剩余传输跳数用于指示当前DRB从接入IAB节点到IAB宿主节点的总跳数。
  4. 根据权利要求1所述的方法，其中，在所述第一IAB节点自身有上行数据传输需求的情况下，所述发送适应性回传协议BAP协议数据单元PDU之前，所述方法还包括：
    根据待传输的上行数据，组建BAP PDU；所述BAP PDU的BAP包头中包括剩余传输跳数；所述剩余传输跳数用于指示当前DRB从第一IAB节点到IAB宿主节点的总跳数。
  5. 一种整合接入回传IAB节点的数据处理方法，由第二IAB节点执行， 包括：
    接收第一IAB节点发送的BAP PDU；BAP PDU的BAP包头中包括剩余传输跳数；
    其中，所述剩余传输跳数用于指示当前数据无线承载DRB从第一IAB节点到目标节点的剩余传输跳数。
  6. 根据权利要求5所述的方法，其中，所述BAP PDU的BAP包头中还包括：目的地址；
    接收第一IAB节点发送的BAP PDU之后，所述方法还包括：
    若接收到的BAP PDU的BAP包头中目的地址为所述第二IAB节点的地址，删除BAP包头后将BAP服务数据单元SDU递交给上层。
  7. 根据权利要求5所述的方法，其中，所述BAP PDU的BAP包头中还包括：目的地址；
    接收第一IAB节点发送的BAP PDU之后，所述方法还包括：
    若接收到的BAP PDU的BAP包头中目的地址不是所述第二IAB节点的地址，向下一跳IAB节点发送BAP PDU；其中，该BAP PDU的BAP包头中的剩余传输跳数为接收到的BAP PDU的BAP包头中的剩余传输跳数减1。
  8. 根据权利要求5所述的方法，其中，所述BAP PDU的BAP包头中还包括：目的地址；
    接收第一IAB节点发送的BAP PDU之后，所述方法还包括：
    若接收到的BAP PDU的BAP包头中目的地址不是所述第二IAB节点的地址，接收到的BAP PDU的BAP包头中的剩余传输跳数等于0或1，向下一跳IAB节点发送BAP PDU；其中，该BAP PDU的BAP包头中的剩余传输跳数与接收到的BAP PDU的BAP包头中的剩余传输跳数相同。
  9. 根据权利要求5至8中任一项所述的方法，其中，所述BAP包头中包括的剩余传输跳数的取值为非负数。
  10. 一种整合接入回传IAB节点的数据处理装置，应用于第一IAB节点，包括：
    发送单元，用于发送适应性回传协议BAP协议数据单元PDU；BAP PDU的BAP包头中包括剩余传输跳数；
    其中，所述剩余传输跳数用于指示当前数据无线承载DRB从第一IAB节点到目标节点的剩余传输跳数。
  11. 一种IAB节点，该IAB节点为第一IAB节点，包括存储器，收发机，处理器；
    存储器，用于存储计算机程序；收发机，用于在所述处理器的控制下收发数据；处理器，用于读取所述存储器中的计算机程序并执行以下操作：
    发送适应性回传协议BAP协议数据单元PDU；BAP PDU的BAP包头中包括剩余传输跳数；
    其中，所述剩余传输跳数用于指示当前数据无线承载DRB从第一IAB节点到目标节点的剩余传输跳数。
  12. 根据权利要求11所述的IAB节点，其中，所述处理器还用于读取所述存储器中的计算机程序并执行以下操作：
    在所述第一IAB节点为IAB宿主节点的情况下，接收上层发送的下行数据包；
    根据所述下行数据包，组建BAP PDU；所述BAP PDU的BAP包头中包括剩余传输跳数；所述剩余传输跳数用于指示当前DRB从IAB宿主节点到目标节点的总跳数。
  13. 根据权利要求11所述的IAB节点，其中，所述处理器还用于读取所述存储器中的计算机程序并执行以下操作：
    在所述第一IAB节点为终端的接入IAB节点的情况下，接收终端发送的上行数据包；
    根据所述上行数据包，组建BAP PDU；所述BAP PDU的BAP包头中包括剩余传输跳数；所述剩余传输跳数用于指示当前DRB从接入IAB节点到IAB宿主节点的总跳数。
  14. 根据权利要求11所述的IAB节点，其中，所述处理器还用于读取所述存储器中的计算机程序并执行以下操作：
    在所述第一IAB节点自身有上行数据传输需求的情况下，根据待传输的上行数据，组建BAP PDU；所述BAP PDU的BAP包头中包括剩余传输跳数；所述剩余传输跳数用于指示当前DRB从第一IAB节点到IAB宿主节点的总 跳数。
  15. 一种整合接入回传IAB节点的数据处理装置，应用于第二IAB节点，包括：
    接收单元，用于接收第一IAB节点发送的BAP PDU；BAP PDU的BAP包头中包括剩余传输跳数；
    其中，所述剩余传输跳数用于指示当前数据无线承载DRB从第一IAB节点到目标节点的剩余传输跳数。
  16. 一种IAB节点，该IAB节点为第二IAB节点，包括存储器，收发机，处理器；
    存储器，用于存储计算机程序；收发机，用于在所述处理器的控制下收发数据；处理器，用于读取所述存储器中的计算机程序并执行以下操作：
    接收第一IAB节点发送的BAP PDU；BAP PDU的BAP包头中包括剩余传输跳数；
    其中，所述剩余传输跳数用于指示当前数据无线承载DRB从第一IAB节点到目标节点的剩余传输跳数。
  17. 根据权利要求16所述的IAB节点，其中，所述BAP PDU的BAP包头中还包括：目的地址；
    所述处理器还用于读取所述存储器中的计算机程序并执行以下操作：
    若接收到的BAP PDU的BAP包头中目的地址为所述第二IAB节点的地址，删除BAP包头后将BAP服务数据单元SDU递交给上层。
  18. 根据权利要求16所述的IAB节点，其中，所述BAP PDU的BAP包头中还包括：目的地址；
    所述处理器还用于读取所述存储器中的计算机程序并执行以下操作：
    若接收到的BAP PDU的BAP包头中目的地址不是所述第二IAB节点的地址，向下一跳IAB节点发送BAP PDU；其中，该BAP PDU的BAP包头中的剩余传输跳数为接收到的BAP PDU的BAP包头中的剩余传输跳数减1。
  19. 根据权利要求16所述的IAB节点，其中，所述BAP PDU的BAP包头中还包括：目的地址；
    所述处理器还用于读取所述存储器中的计算机程序并执行以下操作：
    若接收到的BAP PDU的BAP包头中目的地址不是所述第二IAB节点的地址，接收到的BAP PDU的BAP包头中的剩余传输跳数等于0或1，向下一跳IAB节点发送BAP PDU；其中，该BAP PDU的BAP包头中的剩余传输跳数与接收到的BAP PDU的BAP包头中的剩余传输跳数相同。
  20. 根据权利要求16至19中任一项所述的IAB节点，其中，所述BAP包头中包括的剩余传输跳数的取值为非负数。
  21. 一种处理器可读存储介质，其中，所述处理器可读存储介质存储有计算机程序，所述计算机程序用于使所述处理器执行权利要求1至4任一项所述的方法；或者，所述计算机程序用于使所述处理器执行权利要求5至9任一项所述的方法。
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WO2020060207A1 (ko) * 2018-09-18 2020-03-26 삼성전자 주식회사 무선 통신 시스템에서 데이터를 송수신하는 방법 및 장치
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