WO2020001146A1 - Iab网络中iab节点信息的处理方法及装置 - Google Patents

Iab网络中iab节点信息的处理方法及装置 Download PDF

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Publication number
WO2020001146A1
WO2020001146A1 PCT/CN2019/084091 CN2019084091W WO2020001146A1 WO 2020001146 A1 WO2020001146 A1 WO 2020001146A1 CN 2019084091 W CN2019084091 W CN 2019084091W WO 2020001146 A1 WO2020001146 A1 WO 2020001146A1
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Prior art keywords
iab
iab node
node
information
donor
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PCT/CN2019/084091
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English (en)
French (fr)
Inventor
邹伟
陈琳
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中兴通讯股份有限公司
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to JP2020572802A priority Critical patent/JP7332637B2/ja
Priority to US17/252,872 priority patent/US11647426B2/en
Priority to KR1020217001981A priority patent/KR20210022707A/ko
Priority to BR112020025706-0A priority patent/BR112020025706A2/pt
Priority to EP19826186.9A priority patent/EP3813440A4/en
Publication of WO2020001146A1 publication Critical patent/WO2020001146A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0016—Hand-off preparation specially adapted for end-to-end data sessions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H04W36/087—Reselecting an access point between radio units of access points
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/34—Modification of an existing route
    • H04W40/36—Modification of an existing route due to handover
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/19—Connection re-establishment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/042—Public Land Mobile systems, e.g. cellular systems
    • H04W84/047—Public Land Mobile systems, e.g. cellular systems using dedicated repeater stations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present disclosure relates to the field of communications, and in particular, to a method and device for processing IAB node information in an integrated access backhaul IAB network.
  • the 5th generation mobile communication technology (5th Generation, referred to as 5G) under study in 3GPP will achieve greater throughput, more user connections, lower latency, higher reliability, and lower power consumption (including Network-side equipment and user terminals).
  • 5G 5th Generation
  • the Integrated Access Backhaul (IAB) technology has been established as a new research project, and its goal is to enable one or more IAB nodes to serve as the UE of the parent node. It is connected to the parent node through its local access resources, and a multi-hop wireless self-backhaul network is formed on this basis to provide a backhaul connection for the local access UE of the IAB node.
  • IAB Integrated Access Backhaul
  • the use of wireless self-backhauling technology is one of the important technical options to avoid the above problems and reduce investment costs (CAPEX).
  • the self-backhaul technology refers to that the backhaul link and the access link use the same wireless transmission technology, share the same frequency band, and multiplex resources through time division or frequency division.
  • FIG. 1 is a schematic diagram of a 3GPP reference relay architecture 1a in the related art.
  • IAB node serves as a DU to provide access services for a local UE, and each IAB node passes a local mobile terminal (MT) Connected to the parent node of the upper level.
  • MT local mobile terminal
  • the MT serves as the access user of the parent node and other users (UEs) of the parent node to share the access bandwidth. Since the DU and the CU are connected through the F1 interface, a one-hop or multi-hop data bearer needs to be established between the DU of the IAB node and the CU of the IAB Donor to transmit the F1 message. At each hop, this data bearer is again used for data transmission through the wireless NR Uu bearer between the MT and the DU. Therefore, for a multi-hop F1 bearer, the intermediate IAB node needs to forward the received F1 message. This forwarding process can be implemented at the intermediate node by the IP layer or Adapt layer.
  • the IP layer or Adapt layer can forward the data packet to the next connection based on the destination address of the received data packet (such as the target IAB Node ID) or other information.
  • IAB Donor is a node with a wired connection, which can include a DU and a CU.
  • FIG 2 is a schematic diagram of the forwarding implemented by the Adapt layer of the intermediate node in the 3GPP reference relay architecture 1a in the related art.
  • an adaptation layer (Adapt layer) needs to be added to implement the F1 interface. Send, receive and forward data.
  • an IAB node is a node that provides remote access using a self-backhaul connection in an IAB network.
  • IAB Donor base station refers to the node in the IAB network that has a wired core network connection. Other IAB nodes access the core network through the Donor base station.
  • IAB nodes may need to switch to other upper-level nodes without packet loss during the switchover process, and to return back to various services after the switchover, and implement downlink notifications.
  • the embodiments of the present disclosure provide a method and device for processing IAB node information in an integrated access backhaul IAB network, so as to at least solve the related art due to the change of the wireless link, the IAB node may not notify the downlink after switching to other nodes. solved problem.
  • a method for processing IAB node information in an integrated access backhaul IAB network including: a second IAB node receives notification information sent by a first IAB node; wherein the notification information includes At least one of the following: notification information for notifying a connection switching event and / or a connection reestablishment event, and instruction information for instructing to perform a PDCP status report of the packet data convergence protocol.
  • a storage medium having a computer program stored therein, wherein the computer program is configured to execute a process of comprehensively accessing and returning IAB node information in an IAB network when running. method.
  • a method for processing IAB node information in an integrated access backhaul IAB network including: performing a first IAB node in the IAB network from a third IAB node to a fourth IAB During the connection switching and / or connection re-establishment of a node, the IAB Donor node sends routing configuration information to the IAB node related to the route update; wherein the IAB node related to the route update includes at least one of the following: the third IAB node , The fourth IAB node, the IAB node passed by the old route used in the IAB network before connection switching and / or connection reestablishment, the new IAB node enabled in the IAB network after connection switching and / or connection reestablishment The IAB node that the route passes through.
  • a storage medium having a computer program stored therein, wherein the computer program is configured to execute a process of comprehensively accessing and returning IAB node information in an IAB network when running. method.
  • a method for processing IAB node information in an integrated access backhaul IAB network including: completing, from a third IAB node to a fourth IAB, a first IAB node in the IAB network After the node's connection is switched and / or the connection is reestablished, the third IAB node sends downlink data transmission status information to the IAB Donor node.
  • a storage medium having a computer program stored therein, wherein the computer program is configured to execute a process of comprehensively accessing and returning IAB node information in an IAB network when running. method.
  • a processing device for comprehensively accessing and returning IAB node information in an IAB network which is applied to a second IAB node side in the IAB network and includes: a first in the IAB network After the IAB node completes the connection switching and / or the connection reconstruction from the third IAB node to the fourth IAB node, the third IAB node sends downlink data transmission status information to the IAB Donor node.
  • a processing device for comprehensively accessing and returning IAB node information in an IAB network which is applied to the IAB Donor node side in the IAB network and includes: a first sending module configured as the IAB The first IAB node in the network sends the routing configuration information to the IAB node related to the route update during the connection switching and / or the connection reestablishment from the third IAB node to the fourth IAB node; wherein the route update information is related to the route update.
  • the IAB node includes at least one of the following: the third IAB node, the fourth IAB node, an IAB node through which an old route used in the IAB network passes before connection switching and / or connection re-establishment, connection switching And / or the IAB node that the new route enabled in the IAB network passes through after the connection is reestablished.
  • a processing device for comprehensively accessing and returning IAB node information in an IAB network, which is applied to a third IAB node side in the IAB network, and includes a second sending module configured to After the first IAB node in the IAB network completes the connection switching and / or the connection reestablishment from the third IAB node to the fourth IAB node, it sends downlink data transmission status information to the IAB Donor node.
  • an electronic device including a memory and a processor, wherein the memory stores a computer program, and the processor is configured to run the computer program to execute any one of the above. Steps in a method embodiment.
  • the second IAB node in the IAB network receives the notification information sent by the first IAB node; wherein the notification information includes at least one of the following: notification information for notifying a connection switching event and / or a connection re-establishment event, Instructions for indicating the PDCP status report of the packet data convergence protocol; therefore, it can solve the problem that the IAB node may notify the unresolved downlink after switching to other nodes due to the change of the wireless link in the related technology, and the guaranteed IAB node is reached The effect of complete switching.
  • FIG. 1 is a schematic diagram of a 3GPP reference relay architecture 1a in the related art
  • FIG. 2 is a schematic diagram of forwarding performed by an Adapt layer of an intermediate node in a 3GPP reference relay architecture 1a in the related art
  • FIG. 3 is a schematic diagram of an IAB node performing handover according to an embodiment of the present disclosure
  • FIG. 4 is a first flowchart of a method for processing IAB node information in an integrated access backhaul IAB network according to an embodiment of the present disclosure
  • FIG. 5 is a first schematic structural diagram of a processing device for IAB node information in an integrated access backhaul IAB network according to an embodiment of the present disclosure
  • FIG. 6 is a second flowchart of a method for processing IAB node information in an integrated access backhaul IAB network according to an embodiment of the present disclosure
  • FIG. 7 is a second schematic diagram of a structure of a processing device for IAB node information in an integrated access backhaul IAB network according to an embodiment of the present disclosure
  • FIG. 8 is a signaling flowchart of a handover completion notification between two IAB nodes in a multi-hop backhaul link according to an embodiment of the present disclosure
  • FIG. 9 is a signaling flowchart of performing a backhaul link completion notification on a UE at an access IAB node according to an embodiment of the present disclosure.
  • FIG. 10 is a signaling flowchart of a DU switching in a case where a CU / DU is separated according to the NR standard in the related art
  • FIG. 11 is a signaling flowchart for transmitting downlink data transmission status information through an Adapt layer control PDU according to an IAB node of the present disclosure
  • FIG. 12 is a signaling flowchart of IAB Donor performing routing configuration on an IAB node according to an embodiment of the present disclosure
  • FIG. 13 is a signaling flowchart for transmitting downlink data transmission status information through RRC signaling according to an embodiment of the present disclosure
  • FIG. 15 is a signaling flowchart for transferring a data packet that needs to be retransmitted through a temporary route by an IAB node switching according to an embodiment of the present disclosure.
  • the IAB node serves as a DU (Distributed Unit) to provide access services for the local UE (User Equipment).
  • the IAB node is connected with the parent node at a higher level through a local MT (Mobile Terminal).
  • the MT serves as the access user of the parent node and other users (UEs) of the parent node to share the access bandwidth.
  • the DU and the CU Centralized Unit
  • a one-hop or multi-hop data bearer needs to be established between the DU of the IAB node and the CU of the IAB Donor to transmit the F1 message.
  • this data bearer is again used for data transmission through the wireless NR Uu bearer between the MT and the DU. Therefore, for a multi-hop F1 bearer, the intermediate IAB node needs to forward the received F1 message.
  • This forwarding process can be implemented at the intermediate node by the IP layer or Adapt layer. Specifically, the IP layer or Adapt layer can forward the data packet to the next connection according to the destination address of the received data packet (such as the target IAB Node ID) or other information.
  • IAB Donor is a node with a wired connection, which can include a DU and a CU.
  • an adaptation layer (Adapt layer) needs to be added to realize the sending, receiving, and forwarding of F1 interface data.
  • FIG. 3 is a schematic diagram of switching by an IAB node according to an embodiment of the present disclosure.
  • the superior source IAB node C sends the measurement report to IAB Donor.
  • IAB Donor decides to switch the IAB node B to the superior target IAB node D, and sends the corresponding information to the superior source IAB node C, and then the superior source IAB node C initiates the switching process.
  • FIG. 4 is a flowchart of a method for processing IAB node information in an integrated access backhaul IAB network according to an embodiment of the present disclosure.
  • the process includes the following steps:
  • Step S402 the first IAB node in the IAB network is switched from the third IAB node connection and / or the connection is rebuilt to the fourth IAB node;
  • Step S404 the second IAB node receives the notification information sent by the first IAB node
  • Step S406 the second IAB node notifies the notification information to a user terminal UE connected to the second IAB;
  • the notification information includes at least one of the following: notification information for notifying a connection switching event and / or a connection reestablishment event, and instruction information for instructing to perform a PDCP status report of the packet data convergence protocol.
  • the second IAB node in the IAB network receives the notification information sent by the first IAB node; wherein the notification information includes at least one of the following: notification information for notifying a connection switching event and / or a connection reestablishment event, Instructions for indicating the PDCP status report of the packet data convergence protocol; therefore, it can solve the problem that the IAB node may notify the unresolved downlink after switching to other nodes due to the change of the wireless link in the related technology, and the guaranteed IAB node is reached The effect of complete switching.
  • the second IAB node receives the notification information in at least one of the following manners: through an interface between the IAB nodes, through interactive control layer PDUs, and through the IAB Donor performs signaling forwarding at the RRC layer and F1AP layer signaling through IAB Donor.
  • the UE receives the notification information in at least one of the following manners: notification is performed through signaling interaction with the RRC layer of each UE, and notification is performed through a broadcast channel.
  • the method steps of this embodiment may further include:
  • Step S402-1 the IAB Donor node sends a message for instructing the UE context modification request to the fourth IAB node;
  • Step S402-2 the second IAB node sends a notification to the UE for instructing connection switching and / or connection reestablishment.
  • a device for processing IAB node information in an integrated access backhaul IAB network is also provided.
  • the device is used to implement the foregoing embodiments and preferred implementation manners, which have already been described and will not be described again.
  • the term "module” may implement a combination of software and / or hardware for a predetermined function.
  • the devices described in the following embodiments are preferably implemented in software, implementation in hardware, or a combination of software and hardware is also possible and conceived.
  • FIG. 5 is a schematic structural diagram of a processing device for IAB node information in an integrated access backhaul IAB network according to an embodiment of the present disclosure.
  • the device is applied to a second IAB node side in the IAB network.
  • the device includes A first receiving module 52, configured to receive a notification from the first IAB node for instructing connection switching and communication after the first IAB node in the IAB network completes the connection switching from the third IAB node and / or the connection is reestablished to the fourth IAB node; And / or notification information for connection reestablishment completion; a notification module 54 coupled to the first receiving module 52 for notifying the notification information to a user terminal UE connected to the second IAB;
  • the notification information includes at least one of the following: notification information for notifying a connection switching event and / or a connection reestablishment event, and instruction information for instructing to perform a PDCP status report of the packet data convergence protocol.
  • the second IAB node receives the notification information in at least one of the following ways: through the interface between the IAB nodes, through the control PDU of the Adapt layer, and the RRC layer signaling through the IAB Donor Forwarding, F1AP layer signaling forwarding through IAB Donor.
  • the UE receives the notification information in at least one of the following ways: through a signaling interaction with the RRC layer of each UE separately, and through a broadcast channel.
  • FIG. 6 is a flowchart of a method for processing IAB node information in an integrated access backhaul IAB network according to an embodiment of the present disclosure. Second, as shown in Figure 6, the process includes the following steps:
  • Step S602 After the first IAB node in the IAB network completes the switch from the connection with the third IAB node to the connection with the fourth IAB node and / or the connection is reestablished, the IAB Donor node sends a routing configuration to the IAB node related to the routing update. information;
  • Step S604 the IAB Donor node receives the routing configuration confirmation information of the related IAB node in response to the routing configuration information feedback;
  • the IAB node related to the route update includes at least one of the following: a third IAB node, a fourth IAB node, an IAB node through which an old route used in the IAB network passes before connection switching and / or connection reestablishment, The IAB node through which the new route enabled in the IAB network passes after the connection is switched and / or the connection is reestablished.
  • the method of this embodiment may further include:
  • Step S606 The IAB Donor node configures a temporary route, where the temporary route is from the third IAB node to the fourth IAB node; the temporary route configuration includes the routing configuration of all IAB nodes in the temporary route.
  • Step S610 the third IAB node sends the unsuccessful downlink data packet that has not been successfully sent to the fourth IAB node through a temporary route;
  • Step S612 the third IAB node retransmits the downlink data packet after the handover is completed.
  • the route configuration information in the manner of this embodiment includes at least one of the following: routing information deleted after connection switching and / or connection reestablishment, newly configured routing configuration information after connection switching and / or connection reestablishment, and newly configured routing
  • the enabling information of the configuration information; among them, the newly configured routing configuration information includes: the third IAB node of the newly configured route and the corresponding next hop information; the next hop information is the identification information of the adjacent IAB node of the next hop and And / or identification information of the RLC entity that is sent to the next-hop neighboring IAB node.
  • the method for transmitting routing configuration information or routing configuration confirmation information includes at least one of the following: through an RRC signaling message between the IAB node and the IAB Donor, and between the IAB node and the IAB Donor F1AP messages, and Adapt layer control messages between IAB nodes and IAB Donor.
  • a device for processing IAB node information in an integrated access backhaul IAB network is also provided.
  • the device is used to implement the foregoing embodiments and preferred implementation manners, which have already been described and will not be described again.
  • the term "module” may implement a combination of software and / or hardware for a predetermined function.
  • the devices described in the following embodiments are preferably implemented in software, implementation in hardware, or a combination of software and hardware is also possible and conceived.
  • FIG. 7 is a second structural diagram of a processing device for IAB node information in an integrated access backhaul IAB network according to an embodiment of the present disclosure.
  • the device is applied to the IAB Donor node side of the IAB network.
  • the device includes:
  • the first sending module 72 is configured to send routing configuration information to the IAB node related to the route update during the process of connection switching and / or connection reestablishment from the third IAB node to the fourth IAB node in the IAB network.
  • a second receiving module 74 coupled to the first sending module 72, and configured to receive routing configuration confirmation information from the relevant IAB node in response to the routing configuration information feedback;
  • the related IAB node includes at least one of the following: a third IAB node, a fourth IAB node, a connection switching and / or an IAB node that an old route used in the IAB network passes through before the connection is reestablished, the connection switching and the And / or an IAB node through which a new route enabled in the IAB network passes after the connection is reestablished.
  • a method for processing IAB node information in an integrated access backhaul IAB network includes the following steps:
  • Step S802 After the first IAB node in the IAB network completes the connection switching and / or the connection reestablishment from the third IAB node to the fourth IAB node, the third IAB node sends downlink data transmission status information to the IAB Donor node;
  • Step S804 The third IAB node reads the UE bearer identifier and the PDCP SN number in each data packet at the Adapt layer.
  • the downlink data transmission status information in this embodiment optionally includes: an identifier carried by each UE and information carried by at least one of the following: the largest PDCP SN number sent, the largest PDCP SN number successfully transmitted, The largest PDCP SN number sent by retransmission and the largest PDCP SN number successfully retransmitted;
  • the identifier carried by the UE includes at least one of the following: a UE identifier and a logical link identifier, a UE identifier and a bearer identifier, a global bearer identifier unique to the IAB network configured by IAB Donor for each UE bearer, and a TEID.
  • the method for sending downlink data transmission status information includes at least one of the following: through an RRC signaling message between the IAB node and the IAB Donor, and through an IAB node and the IAB Donor.
  • F1AP message Adapt layer control message between IAB node and IAB Donor.
  • a device for processing IAB node information in an integrated access backhaul IAB network is also provided.
  • the device is used to implement the foregoing embodiments and preferred implementation manners, which have already been described and will not be described again.
  • the term "module” may implement a combination of software and / or hardware for a predetermined function.
  • the devices described in the following embodiments are preferably implemented in software, implementation in hardware, or a combination of software and hardware is also possible and conceived.
  • This embodiment provides a processing device for comprehensively accessing and returning IAB node information in an IAB network.
  • the device is applied to a third IAB node side in the IAB network, and includes:
  • the second sending module is configured to send downlink data transmission status information to the IAB Donor node after the first IAB node in the IAB network completes the connection switching and / or the connection reestablishment from the third IAB node to the fourth IAB node.
  • the downlink data transmission status information includes: an identifier carried by each UE, and at least one of the following information: the maximum PDCP SN number transmitted, the maximum PDCP SN number successfully transmitted, and the maximum PDCP transmitted by retransmission.
  • SN number the largest PDCP SN number for successful retransmission;
  • the identifier carried by the UE includes at least one of the following: UE identifier and logical link identifier, UE identifier and bearer identifier, IAB Donor's configured IAB in each UE bearer Unique global bearer ID and TEID in the network.
  • the second sending module sends downlink data transmission status information in at least one of the following ways: through an RRC signaling message between the IAB node and the IAB Donor, through the IAB node and F1AP messages between IAB and Donor, and control messages through Adapt layer between IAB node and IAB Donor.
  • the apparatus in this embodiment may further include: a reading module, configured to read a UE bearer identifier and a PDCP SN number in each data packet at an Adapt layer, where the UE bearer identifier includes at least one of the following: UE Identification and logical link identification, UE identification and bearer identification, IAB Donor's unique global bearer identification and TEID in the IAB network configured for each PDCP bearer.
  • a reading module configured to read a UE bearer identifier and a PDCP SN number in each data packet at an Adapt layer, where the UE bearer identifier includes at least one of the following: UE Identification and logical link identification, UE identification and bearer identification, IAB Donor's unique global bearer identification and TEID in the IAB network configured for each PDCP bearer.
  • each of the above modules can be implemented by software or hardware.
  • it can be implemented by the following methods, but is not limited to the above: the above modules are all located in the same processor; The forms are located in different processors.
  • FIG. 8 is a signaling flowchart of a handover completion notification between two IAB nodes in a multi-hop backhaul link according to an embodiment of the present disclosure.
  • the handover is completed between IAB node B and target IAB node C.
  • the IAB node B After the operation, in order to start the uplink PDCP Status Report as soon as possible, the IAB node B notifies all subordinate IAB nodes connected to it, such as IAB node A in FIG. 3.
  • the IAB node A after receiving the handover completion information notification, the IAB node A feeds back a handover completion notification response message; wherein the handover completion information notification message and / or the handover completion notification response message may be transmitted through the following: At least one of the ways to achieve:
  • FIG. 9 is a signaling flow chart of a return link completion notification to a UE at an access IAB node according to an embodiment of the present disclosure.
  • the lower-level IAB node A After completing the information, notifies all its serving UEs of the handover completion information in the backhaul link.
  • the notification may be implemented in at least one of the following ways:
  • the UE sends a PDCP Status Report immediately after receiving the notification.
  • FIG. 10 is a signaling flowchart of a DU switching in the case of CU / DU separation provided by the NR (New Radio) standard in the related art.
  • the source DU reports it through the F1AP interface.
  • the CU decides to perform the handover, it performs F1AP interaction with the target DU to establish a context for the handover UE, and then sends a UE Context Modification Request to the source DU to start the specific handover process.
  • the source DU After the source DU sends a handover notification RRCConnectionReconfiguration to the UE, it will report the downlink data transmission status to the CU in the user plane F1-U, and notify the CU of the maximum PDCP SN whose downlink transmission was successful.
  • the CU transmits the PDCP PDU that has been sent to the source DU but needs to be resent at the target node to the target DU according to the above-mentioned downlink data transmission status.
  • the target DU After the connection between the UE and the target DU is established, the target DU forwards the handover completion message RRCConnectionReconfigurationComplete to the IAB Donor.
  • the user plane data transmission and reception between the UE and the UE are started. After that, the IAB Donor interacts with the source DU to release the UE context on the source DU.
  • FIG. 11 is a signaling flowchart of an IAB node switching according to the present disclosure to transmit downlink data transmission status information through an Adapt layer control PDU.
  • the IAB Donor and the superior target IAB node D exchange F1AP signals
  • IAB Donor should also configure the corresponding routing in the superior target IAB node D so that the superior target IAB node D can receive the data packets destined for IAB node B and IAB node A. Both are sent to IAB Node B.
  • IAB Donor can also perform corresponding routing configuration in the superior IAB node of the superior target IAB node D, so that the superior IAB node can send the received data packets to IAB node B and IAB node A both. Go to IAB node D.
  • the source upper-level IAB node C will report to the IAB Donor through the Adapt layer control PDU after it starts the IRB node B handover, that is, after sending RRCConnectionReconfiguration Downlink data transmission status information.
  • the downlink data transmission status information may include an identifier carried by each UE and at least one of the following information of the bearer:
  • the maximum PDCP SN number (Highest Transmitted NR PDCP SN) sent.
  • the highest PDCP SN number (Highest Delivered NR PDCP SN) successfully transmitted.
  • the maximum PDCP SN number (Highest retransmitted NR PDCP Sequence Number) sent by retransmission.
  • the highest PDCP SN number (Highest successfully delivered, retransmitted NR PDCP Sequence Number).
  • the superior source IAB node can read the UE bearer ID and its PDCP SN number in each returned data packet at Adapt across layers.
  • the UE bearer identifier returned by the IAB node may include at least one of the following:
  • FIG. 12 is a signaling flowchart of IAB Donor performing routing configuration on an IAB node according to an embodiment of the present disclosure.
  • IAB Donor sends a routing configuration request message to the IAB node, and the message carries routing information to be configured. After that, the IAB node sends a routing configuration response message to IAB Donor, which is used to confirm the routing configuration request message.
  • the route configuration information may include at least one of the following information: deletion information of the old route, configuration information of the new route, and enabling information of the new route; wherein the configuration information of the new route includes: a target node of the new route and Corresponding next hop information; wherein the next hop information may be identification information of a neighboring next IAB node of the next hop and / or identification information of an RLC entity that sends a next hop adjacent IAB node.
  • route configuration request message and / or the route configuration response message may be transmitted in at least one of the following methods:
  • FIG. 13 is a signaling flowchart for transmitting downlink data transmission status information through RRC signaling according to an IAB node switching according to an embodiment of the present disclosure.
  • the IAB Donor interacts with the upper-level target IAB node D to exchange F1AP.
  • IAB Donor should also configure the corresponding routing in the superior target IAB node D, so that the superior target IAB node D can receive the data destined for IAB node B and IAB node A.
  • the packets are all sent to IAB node B.
  • IAB Donor can also perform corresponding routing configuration in the superior IAB node of the superior target IAB node D, so that the above superior IAB node can send the received packets destined for IAB node B and IAB node A to the IAB. Node D.
  • the source superior IAB node C will report its downlink data to the IAB Donor through an RRC signaling message after it starts the IAB node B handover, that is, after sending the RRCConnectionReconfiguration.
  • Transmission status information may include an identifier carried by each UE and at least one of the following information of the bearer:
  • the switched upper-level source IAB node can read the UE bearer ID and PDCP SN number in each returned packet at Adapt across layers; wherein the returned UE bearer ID of the IAB node may include at least one of the following: UE identification and logical link identification, UE identification and bearer identification, IAB Donor's unique global bearer identification in the IAB network configured for each UE bearer, and TEID (Tunnel Endpoint Identifier, tunnel endpoint identifier) in the F1 interface.
  • FIG. 14 is a signaling flowchart for transmitting downlink data transmission status information through an F1AP message according to an IAB node switching according to an embodiment of the present disclosure.
  • IAB Donor should also configure the corresponding routing in the superior target IAB node D so that the superior target IAB node D can receive the data packets destined for IAB node B and IAB node A. Both are sent to IAB Node B.
  • IAB Donor can also perform corresponding routing configuration in the superior IAB node of the superior target IAB node D, so that the superior IAB node can send the received data packets to IAB node B and IAB node A both. Go to IAB node D.
  • the source superior IAB node C will report its downlink data transmission status to the IAB Donor via F1AP message after it starts the IAB node B handover, that is, after sending the RRCConnectionReconfiguration information.
  • the downlink data transmission status information may include an identifier carried by each UE and at least one of the following information of the bearer:
  • the maximum PDCP SN number (Highest Transmitted NR PDCP SN) sent.
  • the highest PDCP SN number (Highest Delivered NR PDCP SN) successfully transmitted.
  • the maximum PDCP SN number (Highest retransmitted NR PDCP Sequence Number) sent by retransmission.
  • the highest PDCP SN number that was successfully retransmitted (Highest successfully delivered, retransmitted, NR, PDCP, Sequence number).
  • the switched upper-level source IAB node can read the UE bearer ID and PDCP SN number in each returned packet at Adapt across layers; wherein the returned UE bearer ID of the IAB node may include at least one of the following: UE identifier and logical link identifier, UE identifier and bearer identifier, IAB Donor's unique global bearer identifier in the IAB network configured for each UE bearer, and TEID in the F1 interface.
  • FIG. 15 is a signaling flow chart of an IAB node switching according to an embodiment of the present disclosure to transmit a data packet that needs to be retransmitted through a temporary route.
  • the IAB Donor interacts with the superior target IAB node D at the F1AP.
  • IAB Donor should also configure the corresponding routing in the superior target IAB node D, so that the superior target IAB node D can receive the data destined for IAB node B and IAB node A.
  • the packets are all sent to IAB node B.
  • IAB Donor can also perform corresponding routing configuration in the superior IAB node of the superior target IAB node D, so that the above superior IAB node can send the received packets destined for IAB node B and IAB node A to the IAB. Node D.
  • the IAB Donor can configure a temporary data forwarding route in the IAB network after confirming the handover of an IAB node and sending a UE Context Modification Request message.
  • the route is from the switched higher-level source IAB node C to the switched higher-level target IAB node D.
  • the temporary route can also pass through the IAB Donor.
  • the temporary route configuration includes routes to all IAB nodes in the temporary route. Configuration. Wherein, the switched upper source IAB node C passes the received unsuccessful downlink data packet to the switched upper target IAB node D through the temporary route, and the switched higher target IAB node retransmits after the switching is completed.
  • An embodiment of the present disclosure further provides a storage medium that stores a computer program therein.
  • the computer program is configured to execute the steps in any of the foregoing method embodiments 1 when running.
  • the foregoing storage medium may be configured to store a computer program for performing the following steps:
  • the connection with the first IAB node through a one-hop or multi-hop wireless link is performed.
  • the fourth IAB node receives notification information notified by the first IAB node and used to indicate connection switching and / or connection reestablishment completion;
  • the fourth IAB node notifies the notification information to a user terminal UE connected to the fourth IAB.
  • An embodiment of the present disclosure further provides a storage medium.
  • the storage medium stores a computer program, where the computer program is configured to execute the steps in any of the foregoing method embodiments 2 when running.
  • the foregoing storage medium may be configured to store a computer program for performing the following steps:
  • the IAB Donor node moves to the IAB node related to the connection switch and / or connection reestablishment Send routing configuration information
  • the IAB Donor node receives the routing configuration confirmation information from the related IAB node in response to the routing configuration information feedback.
  • An embodiment of the present disclosure further provides a storage medium that stores a computer program therein.
  • the computer program is configured to execute the steps in any of the foregoing method embodiments 3 when running.
  • the foregoing storage medium may be configured to store a computer program for performing the following steps:
  • the second IAB node After the first IAB node in the network finishes switching from the connection with the second IAB node to the connection with the third IAB node and / or the connection is reestablished, the second IAB node sends downlink data transmission status information to the IAB Donor node.
  • the foregoing storage medium may include, but is not limited to, a U disk, a read-only memory (ROM), a random access memory (Random Access Memory, RAM), A variety of media that can store computer programs, such as removable hard disks, magnetic disks, or optical disks.
  • ROM read-only memory
  • RAM Random Access Memory
  • An embodiment of the present disclosure further provides an electronic device including a memory and a processor.
  • the memory stores a computer program
  • the processor is configured to run the computer program to perform the steps in any one of the foregoing method embodiments.
  • the electronic device may further include a transmission device and an input-output device, wherein the transmission device is connected to the processor, and the input-output device is connected to the processor.
  • the foregoing processor may be configured to execute the following steps by a computer program:
  • the first IAB node in the IAB network is switched from a third IAB node connection and / or the connection is rebuilt to a fourth IAB node;
  • the second IAB node receives the notification information sent by the first IAB node.
  • the second IAB node notifies the notification information to a user terminal UE connected to the second IAB.
  • An embodiment of the present disclosure further provides an electronic device including a memory and a processor.
  • the memory stores a computer program
  • the processor is configured to run the computer program to perform the steps in any one of the foregoing method embodiments.
  • the electronic device may further include a transmission device and an input-output device, wherein the transmission device is connected to the processor, and the input-output device is connected to the processor.
  • the foregoing processor may be configured to execute the following steps by a computer program:
  • the IAB Donor node moves to the IAB node related to the connection switch and / or the connection reconstruction Send routing configuration information
  • the IAB Donor node receives the routing configuration confirmation information from the related IAB node in response to the routing configuration information feedback.
  • An embodiment of the present disclosure further provides an electronic device including a memory and a processor.
  • the memory stores a computer program
  • the processor is configured to run the computer program to perform the steps in any one of the foregoing method embodiments.
  • the electronic device may further include a transmission device and an input-output device, wherein the transmission device is connected to the processor, and the input-output device is connected to the processor.
  • the foregoing processor may be configured to execute the following steps by a computer program:
  • the third AB node After the first IAB node in the network finishes switching from the connection with the third IAB node to the connection with the fourth IAB node and / or the connection is reestablished, the third AB node sends downlink data transmission status information to the IAB Donor node.
  • modules or steps of the present disclosure may be implemented by a general-purpose computing device, and they may be centralized on a single computing device or distributed on a network composed of multiple computing devices. Above, optionally, they may be implemented with program code executable by a computing device, so that they may be stored in a storage device and executed by the computing device, and in some cases, may be in a different order than here
  • the steps shown or described are performed, or they are separately made into individual integrated circuit modules, or multiple modules or steps in them are made into a single integrated circuit module for implementation. As such, the present disclosure is not limited to any particular combination of hardware and software.
  • the disclosure is applicable to the field of communications, and can solve the problem that the IAB node may notify the unresolved downlink after switching to other nodes due to the change of the wireless link in the related technology, and achieves the effect of guaranteeing the complete switching of the IAB node.

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Abstract

本公开提供了一种IAB网络中IAB节点信息的处理方法及装置，其中，该方法包括：第二IAB节点接收第一IAB节点发送的通知信息；其中，所述通知信息包括以下至少之一：用于通知连接切换事件和/或连接重建事件的通知信息、用于指示进行分组数据汇聚协议PDCP状态报告的指示信息。通过本公开，解决了相关技术中由于无线链路的变化，IAB节点可能在切换到其他节点后下行通知尚未解决的问题，达到了保证IAB节点完整切换的效果。

Description

IAB网络中IAB节点信息的处理方法及装置 技术领域
本公开涉及通信领域，具体而言，涉及一种综合接入回传IAB网络中IAB节点信息的处理方法及装置。
背景技术
在3GPP正在研究的第五代移动通信技术(5th Generation，简称为5G)将实现更大的吞吐量，更多的用户连接，更低时延，更高可靠性，和更低功耗(包括网络侧设备和用户终端)。目前，在3GPP的讨论中，综合接入回传(Integrated Access and Backhaul，简称为IAB)技术作为一个新的研究项目已经立项，其目标是：使一个或多个IAB节点可以作为母节点的UE通过其本地接入资源连接到母节点，并在此基础上形成多跳的无线自回传网络为IAB节点的本地接入UE提供回传连接。
5G UDN(Ultra-Dense Network，超密网)部署场景中，需要考虑不同回传技术的适用性。对于有线回传，在大量TP密集部署的场景下(如密集街区)，考虑到电缆或光纤的部署或租赁成本，站址的选择及维护成本等，可能使有线回传的成本高得难以接受。即便铺设了有线回传，由于密集部署场景下，每个节点服务的用户数少，负载波动大，或由于节能/干扰控制，一些节点会被动态打开或关闭，很多时候回传链路处于空闲状态，而使用内容预测及缓存技术也会增加回传链路资源需求的波动范围，因此会导致有线回传的使用效率低，浪费投资成本。对于微波回传，也存在增加硬件成本，增加额外的频谱成本(如果使用非授权频谱，传输质量得不到保证)，传输节点的天线高度相对较低，微波更容易被遮挡，导致回传链路质量的剧烈波动等缺陷。
采用无线自回传技术，是避免上述问题、减少投资成本(Capital Expense，简称为CAPEX)的重要技术选择之一。自回传技术是指回传链路和接入链路使用相同的无线传输技术，共用同一频带，通过时分或频分方式复用资源。
除此之外，无线自回程技术还可以用于有线连接部署成本较大的场景。RAN3#99会议的WA for IAB Architecture for L2/3 relaying(R3-181502)中提及了五种relay架构。其中1a)架构是考虑在CU/DU分离的基础上通过增加具有自回传功能的DU来中继业务流。图1是相关技术中3GPP参考中继架构1a的示意图，如图1所示，IAB节点(IAB Node)作为一个DU为本地UE提供接入服务，各个IAB节点通过本地的一个移动终端(MT)和上一级的母节点相联。该MT作为母节点的接入用户和母节点的其他用户(UE)共享接入带宽。由于DU和CU之间是通过F1接口进行联系，所以IAB节点的DU和IAB Donor的CU之间需要建立一个一跳或多跳的数据承载来传输F1消息。在每一跳，该数据承载又是通过MT和DU之间的无线NR Uu承载进行数据传输。所以，对于多跳的F1承载，中间的IAB节点需要对收到的F1消息进行转发。这个转发过程在中间节点可以由IP层或Adapt层实现。具 体的，IP层或Adapt层可以根据收到的数据包的目标地址(如目标IAB Node ID)或其他信息将数据包转发到下一条的连接中。IAB Donor是具有有线连接的节点，其可以包含一个DU和一个CU。
图2是相关技术中3GPP参考中继架构1a中由中间节点的Adapt层实现转发的示意图，如图2所示，在每个IAB节点中，需要增加一个适配层(Adapt层)实现F1接口数据的发送，接收和转发。
综上所述，IAB节点就是IAB网络中利用自回传连接提供远端接入的节点。IAB Donor基站是指IAB网络中具有有线的核心网连接的节点，其他IAB节点通过Donor基站接入核心网。
但是在多跳IAB网络中，由于无线链路的变化，IAB节点可能需要切换到其他上级节点，而在切换过程中不丢包，并在切换后恢复各项业务的回传，以及实现下行通知这些都是相关技术中目前尚未解决的问题。
发明内容
本公开实施例提供了一种综合接入回传IAB网络中IAB节点信息的处理方法及装置，以至少解决相关技术中由于无线链路的变化，IAB节点可能在切换到其他节点后下行通知尚未解决的问题。
根据本公开的一个实施例，提供了一种综合接入回传IAB网络中IAB节点信息的处理方法，包括：第二IAB节点接收第一IAB节点发送的通知信息；其中，所述通知信息包括以下至少之一：用于通知连接切换事件和/或连接重建事件的通知信息、用于指示进行分组数据汇聚协议PDCP状态报告的指示信息。
根据本公开的一个实施例，提供了一种存储介质，所述存储介质中存储有计算机程序，其中，所述计算机程序被设置为运行时执行综合接入回传IAB网络中IAB节点信息的处理方法。
根据本公开的另一个方面，提供了一种综合接入回传IAB网络中IAB节点信息的处理方法，包括：在所述IAB网络中的第一IAB节点进行从第三IAB节点到第四IAB节点的连接切换和/或连接重建过程中，IAB Donor节点向与路由更新相关的IAB节点发送路由配置信息；其中，所述路由更新相关的IAB节点包括以下至少之一：所述第三IAB节点、所述第四IAB节点、连接切换和/或连接重建前在所述IAB网络中所使用的旧路由所经过的IAB节点、连接切换和/或连接重建后在所述IAB网络中启用的新路由所经过的IAB节点。
根据本公开的一个实施例，提供了一种存储介质，所述存储介质中存储有计算机程序，其中，所述计算机程序被设置为运行时执行综合接入回传IAB网络中IAB节点信息的处理方法。
根据本公开的又一个方面，提供了一种综合接入回传IAB网络中IAB节点信息的处理方法，包括：在所述IAB网络中的第一IAB节点完成从第三IAB节点到第四IAB节点的连接切换和/或连接重建后，所述第三IAB节点向所述IAB Donor节点发送下行数据传输状态 信息。
根据本公开的一个实施例，提供了一种存储介质，所述存储介质中存储有计算机程序，其中，所述计算机程序被设置为运行时执行综合接入回传IAB网络中IAB节点信息的处理方法。
根据本公开的再一个方面，提供了一种综合接入回传IAB网络中IAB节点信息的处理装置，应用于IAB网络中的第二IAB节点侧，包括：在所述IAB网络中的第一IAB节点完成从第三IAB节点到第四IAB节点的连接切换和/或连接重建后，所述第三IAB节点向所述IAB Donor节点发送下行数据传输状态信息。
根据本公开的再一个方面，提供了一种综合接入回传IAB网络中IAB节点信息的处理装置，应用于IAB网络中的IAB Donor节点侧，包括：第一发送模块，设置为所述IAB网络中的第一IAB节点进行从第三IAB节点到第四IAB节点的连接切换和/或连接重建过程中，向与路由更新相关的IAB节点发送路由配置信息；其中，所述与路由更新相关的IAB节点包括以下至少之一：所述第三IAB节点、所述第四IAB节点、连接切换和/或连接重建前在所述IAB网络中所使用的旧路由所经过的IAB节点、连接切换和/或连接重建后在所述IAB网络中启用的新路由所经过的IAB节点。
根据本公开的再一个方面，提供了一种综合接入回传IAB网络中IAB节点信息的处理装置，应用于IAB网络中的第三IAB节点侧，包括：第二发送模块，设置为在所述IAB网络中的第一IAB节点完成从第三IAB节点到第四IAB节点连接切换和/或连接重建后，向所述IAB Donor节点发送下行数据传输状态信息。
根据本公开的又一个实施例，还提供了一种电子装置，包括存储器和处理器，所述存储器中存储有计算机程序，所述处理器被设置为运行所述计算机程序以执行上述任一项方法实施例中的步骤。
通过本公开，IAB网络中的第二IAB节点接收第一IAB节点发送的通知信息；其中，所述通知信息包括以下至少之一：用于通知连接切换事件和/或连接重建事件的通知信息、用于指示进行分组数据汇聚协议PDCP状态报告的指示信息；因此，可以解决相关技术中由于无线链路的变化，IAB节点可能在切换到其他节点后下行通知尚未解决的问题，达到了保证IAB节点完整切换的效果。
附图说明
此处所说明的附图用来提供对本公开的进一步理解，构成本申请的一部分，本公开的示意性实施例及其说明用于解释本公开，并不构成对本公开的不当限定。在附图中：
图1是相关技术中3GPP参考中继架构1a的示意图；
图2是相关技术中3GPP参考中继架构1a中由中间节点的Adapt层实现转发的示意图；
图3是根据本公开实施例的一个IAB节点进行切换的示意图；
图4是根据本公开实施例的综合接入回传IAB网络中IAB节点信息的处理方法的流程图一；
图5是根据本公开实施例的综合接入回传IAB网络中IAB节点信息的处理装置结构示意图一；
图6是根据本公开实施例的综合接入回传IAB网络中IAB节点信息的处理方法的流程图二；
图7是根据本公开实施例的综合接入回传IAB网络中IAB节点信息的处理装置结构示意图二；
图8是根据本公开实施例的在多跳回传链路中两个IAB节点之间进行切换完成通知的信令流程图；
图9是根据本公开实施例的在接入IAB节点对UE进行回传链路切换完成通知的信令流程图；
图10是相关技术中NR标准提供的CU/DU分离的情况下DU进行切换的信令流程图；
图11是根据本公开的IAB节点进行切换的通过Adapt层控制PDU传输下行数据传输状态信息的信令流程图；
图12是本公开实施例的IAB Donor对IAB节点进行路由配置的信令流程图；
图13是根据本公开实施例的IAB节点进行切换的通过RRC信令传输下行数据传输状态信息的信令流程图；
图14是根据本公开实施例的IAB节点进行切换的通过F1AP消息传输下行数据传输状态信息的信令流程图；
图15是根据本公开实施例的IAB节点进行切换的通过临时路由传递需要重发的数据包的信令流程图。
具体实施方式
下文中将参考附图并结合实施例来详细说明本公开。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
需要说明的是，本公开的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。
首先，对本案应用场景及术语进行说明，如图1所示，IAB节点(IAB Node)作为一个DU(Distributed Unit，分布式单元)为本地UE(User Equipment，用户设备)提供接入服务，各个IAB节点通过本地的一个MT(Mobile Terminal，移动终端)和上一级的母节点相联。该MT作为母节点的接入用户和母节点的其他用户(UE)共享接入带宽。由于DU和CU(Centralized Unit，集中单元)之间是通过F1接口进行联系，所以IAB节点的DU和IAB Donor的CU之间需要建立一个一跳或多跳的数据承载来传输F1消息。在每一跳，该数据承载又是通过MT和DU之间的无线NR Uu承载进行数据传输。所以，对于多跳的F1承载，中间的IAB节点需要对收到的F1消息进行转发。这个转发过程在中间节点可以由IP层或Adapt层实现。具体的，IP层或Adapt层可以根据收到的数据包的目标地址(如目标IAB Node ID)或其他信息将数据包转发到下一条的连接中。IAB Donor是具有有线连接的节点，其可以包 含一个DU和一个CU。
如图2所示，在该协议栈架构实施例中，在每个IAB节点中，需要增加一个适配层(Adapt层)实现F1接口数据的发送，接收和转发。
图3是根据本公开实施例的一个IAB节点进行切换的示意图，如图3所示，当IAB节点B发现其和上级源IAB节点C的连接质量下降时发送测量报告，其中，上级源IAB节点C将该测量报告发送给IAB Donor。IAB Donor依据IAB网络的拓扑结构决定将IAB节点B切换到上级目标IAB节点D，并将相应的信息发送给上级源IAB节点C，然后由上级源IAB节点C启动切换流程。
实施例1
在本实施例中提供了一种综合接入回传IAB网络中IAB节点信息的处理方法，图4是根据本公开实施例的综合接入回传IAB网络中IAB节点信息的处理方法的流程图一，如图4所示，该流程包括如下步骤：
步骤S402，IAB网络中的第一IAB节点从第三IAB节点连接切换和/或连接重建到第四IAB节点；
步骤S404，第二IAB节点接收第一IAB节点发送的通知信息；
步骤S406，第二IAB节点将通知信息通知给与第二IAB连接的用户终端UE；
其中，通知信息包括以下至少之一：用于通知连接切换事件和/或连接重建事件的通知信息、用于指示进行分组数据汇聚协议PDCP状态报告的指示信息。
通过上述步骤S404，IAB网络中的第二IAB节点接收第一IAB节点发送的通知信息；其中，该通知信息包括以下至少之一：用于通知连接切换事件和/或连接重建事件的通知信息、用于指示进行分组数据汇聚协议PDCP状态报告的指示信息；因此，可以解决相关技术中由于无线链路的变化，IAB节点可能在切换到其他节点后下行通知尚未解决的问题，达到了保证IAB节点完整切换的效果。
需要说明的是，在本实施例的可选实施方式中，第二IAB节点通过以下至少之一的方式接收该通知信息：通过IAB节点之间的接口、通过交互Adapt层的控制PDU、通过IAB Donor进行RRC层的信令转发、通过IAB Donor进行F1AP层的信令转发。
其中，该UE通过以下至少之一的方式接收该通知信息：通过与各个UE单独的RRC层的信令交互、通过广播信道进行通知。
在本实施例的另一个可选是实施方式中，在触发连接切换和/或连接重建操作之前，本实施例的方法步骤还可以包括：
步骤S402-1，IAB Donor节点向第四IAB节点发送用于指示进行切换的UE上下文修改请求的消息；
步骤S402-2，第二IAB节点向UE发送用于指示连接切换和/或连接重建的通知。
在本实施例中还提供了一种综合接入回传IAB网络中IAB节点信息的处理装置，该装置用于实现上述实施例及优选实施方式，已经进行过说明的不再赘述。如以下所使用的，术 语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现，但是硬件，或者软件和硬件的组合的实现也是可能并被构想的。
图5是根据本公开实施例的综合接入回传IAB网络中IAB节点信息的处理装置结构示意图一，该装置应用于IAB网络中的第二IAB节点侧，如图5所示，该装置包括：第一接收模块52，用于IAB网络中的第一IAB节点完成从第三IAB节点连接切换和/或连接重建到第四IAB节点后，接收第一IAB节点通知的用于指示连接切换和/或连接重建完成的通知信息；通知模块54，与第一接收模块52耦合连接，用于将通知信息通知给与第二IAB连接的用户终端UE；
其中，通知信息包括以下至少之一：用于通知连接切换事件和/或连接重建事件的通知信息、用于指示进行分组数据汇聚协议PDCP状态报告的指示信息。
可选地，在本实施例中，第二IAB节点通过以下至少之一的方式接收通知信息：通过IAB节点之间的接口、通过交互Adapt层的控制PDU、通过IAB Donor进行RRC层的信令转发、通过IAB Donor进行F1AP层的信令转发。
此外，UE通过以下至少之一的方式接收该通知信息：通过与各个UE单独的RRC层的信令交互、通过广播信道进行通知。
实施例2
在本实施例中提供了一种综合接入回传IAB网络中IAB节点信息的处理方法，图6是根据本公开实施例的综合接入回传IAB网络中IAB节点信息的处理方法的流程图二，如图6所示，该流程包括如下步骤：
步骤S602，在IAB网络中的第一IAB节点完成由与第三IAB节点连接切换到与第四IAB节点连接切换和/或连接重建后，IAB Donor节点向与路由更新相关的IAB节点发送路由配置信息；
步骤S604，IAB Donor节点接收相关的IAB节点响应于路由配置信息反馈的路由配置确认信息；
其中，该路由更新相关的IAB节点包括以下至少之一：第三IAB节点、第四IAB节点、连接切换和/或连接重建前在所述IAB网络中所使用的旧路由所经过的IAB节点、连接切换和/或连接重建后在所述IAB网络中启用的新路由所经过的IAB节点。
通过上述步骤S602和S604，在网络中的第一IAB节点完成由与第三IAB节点到与第四IAB节点连接切换和/或连接重建后，实现了IAB节点的路由配置。
在本实施例的可选实施方式中，本实施例的方法还可以包括：
步骤S606：IAB Donor节点配置临时路由，其中，临时路由是从第三IAB节点到第四IAB节点；临时路由配置包括临时路由中所有IAB节点的路由配置。
步骤S610：第三IAB节点将没收到的没有成功发送的下行数据包通过临时路由发送到第四IAB节点；
步骤S612：第三IAB节点在切换完成后重发下行数据包。
其中，在本实施例的方式中路由配置信息包括以下至少之一：连接切换和/或连接重建后 删除的路由信息、连接切换和/或连接重建后新配置的路由配置信息、新配置的路由配置信息的启用信息；其中，新配置的路由配置信息包括：新配置的路由的第三IAB节点和相应的下一跳信息；下一跳信息为下一跳的相邻IAB节点的标识信息和/或对下一跳相邻IAB节点进行发送的RLC实体的标识信息。
需要说明的是，在本实施例中，传输路由配置信息或路由配置确认信息的方式包括以下至少之一：通过IAB节点和IAB Donor之间的RRC信令消息、通过IAB节点和IAB Donor之间的F1AP消息、通过IAB节点和IAB Donor之间的Adapt层控制消息。
在本实施例中还提供了一种综合接入回传IAB网络中IAB节点信息的处理装置，该装置用于实现上述实施例及优选实施方式，已经进行过说明的不再赘述。如以下所使用的，术语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现，但是硬件，或者软件和硬件的组合的实现也是可能并被构想的。
图7是根据本公开实施例的综合接入回传IAB网络中IAB节点信息的处理装置结构示意图二，该装置应用于IAB网络中的IAB Donor节点侧，如图7所示，该装置包括：第一发送模块72，用于IAB网络中的第一IAB节点进行从第三IAB节点到第四IAB节点的连接切换和/或连接重建过程中，向与路由更新相关的IAB节点发送路由配置信息；第二接收模块74，与第一发送模块72耦合连接，用于接收相关的IAB节点响应于路由配置信息反馈的路由配置确认信息；
其中，相关的IAB节点包括以下至少之一：第三IAB节点、第四IAB节点、连接切换和/或连接重建前在所述IAB网络中所使用的旧路由所经过的IAB节点、连接切换和/或连接重建后在所述IAB网络中启用的新路由所经过的IAB节点。
实施例3
在本实施例中提供了一种综合接入回传IAB网络中IAB节点信息的处理方法，该流程包括如下步骤：
步骤S802：在所述IAB网络中的第一IAB节点完成从第三IAB节点到第四IAB节点的连接切换和/或连接重建后，第三IAB节点向IAB Donor节点发送下行数据传输状态信息；
步骤S804：第三IAB节点在Adapt层读取每个数据包中的UE承载标识和PDCP SN号。
其中，该下行数据传输状态信息在本实施例可选的包括：每个UE承载的标识、承载的以下至少之一的信息：发送的最大的PDCP SN号、成功传输的最大的PDCP SN号、重传发送的最大的PDCP SN号、成功重传的最大的PDCP SN号；
其中，UE承载的标识包括以下至少之一：UE标识和逻辑链路标识、UE标识和承载标识、IAB Donor为每个UE承载配置的在IAB网络内唯一的全局承载标识、TEID。
在本实施例的一个可选实施方式中，该发送下行数据传输状态信息的方式包括以下至少之一：通过IAB节点和IAB Donor之间的RRC信令消息、通过IAB节点和IAB Donor之间的F1AP消息、通过IAB节点和IAB Donor之间的Adapt层控制消息。
在本实施例中还提供了一种综合接入回传IAB网络中IAB节点信息的处理装置，该装置用于实现上述实施例及优选实施方式，已经进行过说明的不再赘述。如以下所使用的，术 语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现，但是硬件，或者软件和硬件的组合的实现也是可能并被构想的。
本实施例提供了一种综合接入回传IAB网络中IAB节点信息的处理装置，该装置应用于IAB网络中的第三IAB节点侧，包括：
第二发送模块，用于在IAB网络中的第一IAB节点完成从第三IAB节点到第四IAB节点连接切换和/或连接重建后，向IAB Donor节点发送下行数据传输状态信息。
其中，该下行数据传输状态信息包括：每个UE承载的标识、承载的以下至少之一的信息：发送的最大的PDCP SN号、成功传输的最大的PDCP SN号、重传发送的最大的PDCP SN号、成功重传的最大的PDCP SN号；此外，UE承载的标识包括以下至少之一：UE标识和逻辑链路标识、UE标识和承载标识、IAB Donor为每个UE承载配置的在IAB网络内唯一的全局承载标识、TEID。
需要说明的是，在实施例的可选实施方式中第二发送模块通过以下至少之一的方式发送下行数据传输状态信息：通过IAB节点和IAB Donor之间的RRC信令消息、通过IAB节点和IAB Donor之间的F1AP消息、通过IAB节点和IAB Donor之间的Adapt层控制消息。
可选地，本实施例的装置还可以包括：读取模块，用于在Adapt层读取每个数据包中的UE承载标识和PDCP SN号；其中，UE承载标识包括以下至少之一：UE标识和逻辑链路标识、UE标识和承载标识、IAB Donor为每个PDCP承载配置的在IAB网络内唯一的全局承载标识、TEID。
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根据上述实施例1-3中的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，本公开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设备(可以是手机，计算机，服务器，或者网络设备等)执行本公开各个实施例所述的方法。
需要说明的是，上述各个模块是可以通过软件或硬件来实现的，对于后者，可以通过以下方式实现，但不限于此：上述模块均位于同一处理器中；或者，上述各个模块以任意组合的形式分别位于不同的处理器中。
下面结合本公开的可选实施方式对上述实施例1-3进行举例说明；
可选实施方式
图8是根据本公开实施例的在多跳回传链路中两个IAB节点之间进行切换完成通知的信令流程图，如图8所示，在IAB节点B和目标IAB节点C完成切换操作后，为了尽快启动上行的PDCP Status Report，IAB节点B将切换完成信息通知给与其相连的所有的下级IAB节点，如图3中的IAB节点A。在本实施例的可选实施方式中，IAB节点A在收到上述切换完成信息通知后反馈一个切换完成通知响应消息；其中，该切换完成信息通知消息和/或切换完成通知响应消息可以通过下列方式中的至少一种方式实现：
(1)通过IAB节点之间的接口；
(2)通过交互Adapt层的控制PDU；
(3)通过IAB Donor进行RRC层的信令转发；
(4)通过IAB Donor进行F1AP层的信令转发。
图9是根据本公开实施例的在接入IAB节点对UE进行回传链路切换完成通知的信令流程图，如图9所示，在下级IAB节点A在收到上级IAB节点B的切换完成信息后，该下级IAB节点A将上述回传链路中的切换完成信息通知其所有正在服务的UE。其中，该通知可以通过下列方式中的至少一种方式实现：
(1)通过和各个UE单独的RRC层的信令交互；
(2)通过广播信道进行通知。
可选的，UE在收到上述通知后立即发送PDCP Status Report。
图10是相关技术中NR(New Radio)标准提供的CU/DU分离的情况下DU进行切换的信令流程图，如图10所示，UE报告测量报告后，源DU通过F1AP接口将其报告给CU。CU决定进行切换后，和目标DU进行F1AP交互为切换的UE建立上下文，然后发送UE Context Modification Request给源DU启动具体的切换流程。源DU在发送切换通知RRCConnectionReconfiguration给UE后会在用户面F1-U中向CU报告下行数据传输状态，通知CU其下行发送成功的最大PDCP SN。CU根据上述下行数据传输状态将已经发送给源DU但需要在目标节点重发的PDCP PDU通过F1-U传输给目标DU。UE和目标DU连接建立之后，目标DU将切换完成消息RRCConnectionReconfigurationComplete转发给IAB Donor。同时开始其和UE间的用户面数据收发。之后，IAB Donor和源DU交互释放源DU上的UE上下文。
图11是根据本公开的IAB节点进行切换的通过Adapt层控制PDU传输下行数据传输状态信息的信令流程图，如图11所示的步骤4a，在IAB Donor和上级目标IAB节点D交互F1AP信令为IAB节点B创建上下文之后，IAB Donor还应该在上级目标IAB节点D中进行相应的路由配置，以使得上级目标IAB节点D能将收到的去往IAB节点B和IAB节点A的数据包都发送到IAB节点B。可选的，IAB Donor还可以在上级目标IAB节点D的上级IAB节点中进行相应的路由配置，以使得上述上级IAB节点能将收到的去往IAB节点B和IAB节点A的数据包都发送到IAB节点D。此外，如图11所示的步骤6a，为了不在切换过程丢失下行数据，源上级IAB节点C会在其启动IAB节点B的切换之后，即发送RRCConnectionReconfiguration之后，通过Adapt层控制PDU向IAB Donor报告其下行数据传输状态信息。
其中，该下行数据传输状态信息可以包括每个UE承载的标识以及该承载的以下信息的至少之一：
发送的最大的PDCP SN号(Highest Transmitted NR PDCP SN)。
成功传输的最大的PDCP SN号(Highest Delivered NR PDCP SN)。
重传发送的最大的PDCP SN号(Highest retransmitted NR PDCP Sequence Number)。
成功重传的最大的PDCP SN号(Highest successfully delivered retransmitted NR PDCP  Sequence Number)。
此外，在本实施例中，上级源IAB节点可以在Adapt跨层读取每个回传数据包中的UE承载标识及其PDCP SN号。其中，该IAB节点的回传的UE承载标识可以包括以下至少之一：
(1)UE标识和逻辑链路标识；
(2)UE标识和承载标识；
(3)IAB Donor为每个UE承载配置的在IAB网络内唯一的全局承载标识；
(4)F1接口中的TEID。
图12是本公开实施例的IAB Donor对IAB节点进行路由配置的信令流程图，如图12所示，IAB Donor向IAB节点发送一个路由配置请求消息，该消息携带了需要配置的路由信息。之后，IAB节点向IAB Donor发送一个路由配置响应消息，该消息用了对路由配置请求消息进行确认。
其中，该路由配置信息可以包括下列信息中的至少一种信息：旧路由的删除信息、新路由的配置信息、新路由的启用信息；其中，新路由的配置信息包括：新路由的目标节点和相应的下一跳信息；其中，该下一跳信息可以是下一跳的相邻IAB节点的标识信息和/或对下一跳相邻IAB节点进行发送的RLC实体的标识信息。
此外，该路由配置请求消息和/或路由配置响应消息可以通过下列方法中的至少一种方式进行传输：
(1)通过IAB节点和IAB Donor之间的RRC信令消息；
(2)通过IAB节点和IAB Donor之间的F1AP消息；
(3)通过IAB节点和IAB Donor之间的Adapt层控制消息。
图13是根据本公开实施例的IAB节点进行切换的通过RRC信令传输下行数据传输状态信息的信令流程图，如图13所示的步骤4a，在IAB Donor和上级目标IAB节点D交互F1AP信令为IAB节点B创建上下文之后，IAB Donor还应该在上级目标IAB节点D中进行相应的路由配置，以使得上级目标IAB节点D能将收到的去往IAB节点B和IAB节点A的数据包都发送到IAB节点B。其中，IAB Donor还可以在上级目标IAB节点D的上级IAB节点中进行相应的路由配置，以使得上述上级IAB节点能将收到的去往IAB节点B和IAB节点A的数据包都发送到IAB节点D。
如图13所示的步骤6a，为了不在切换过程丢失下行数据，源上级IAB节点C会在其启动IAB节点B的切换之后，即发送RRCConnectionReconfiguration之后，通过RRC信令消息向IAB Donor报告其下行数据传输状态信息；其中，该下行数据传输状态信息可以包括每个UE承载的标识以及该承载的以下信息的至少之一：
(1)发送的最大的PDCP SN号(Highest Transmitted NR PDCP SN)；
(2)成功传输的最大的PDCP SN号(Highest Delivered NR PDCP SN)；
(3)重传发送的最大的PDCP SN号(Highest retransmitted NR PDCP Sequence Number)；
(4)成功重传的最大的PDCP SN号(Highest successfully delivered retransmitted NR  PDCP Sequence Number)。
此外，切换的上级源IAB节点可以在Adapt跨层读取每个回传数据包中的UE承载标识和PDCP SN号；其中，该IAB节点的回传的UE承载标识可以包括以下至少之一：UE标识和逻辑链路标识、UE标识和承载标识、IAB Donor为每个UE承载配置的在IAB网络内唯一的全局承载标识、F1接口中的TEID(Tunnel Endpoint Identifier，隧道端点标识符)。
图14是根据本公开实施例的IAB节点进行切换的通过F1AP消息传输下行数据传输状态信息的信令流程图，如图14所示的步骤4a，在IAB Donor和上级目标IAB节点D交互F1AP信令为IAB节点B创建上下文之后，IAB Donor还应该在上级目标IAB节点D中进行相应的路由配置，以使得上级目标IAB节点D能将收到的去往IAB节点B和IAB节点A的数据包都发送到IAB节点B。可选的，IAB Donor还可以在上级目标IAB节点D的上级IAB节点中进行相应的路由配置，以使得上述上级IAB节点能将收到的去往IAB节点B和IAB节点A的数据包都发送到IAB节点D。
如图14所示的步骤6a，为了不在切换过程丢失下行数据，源上级IAB节点C会在其启动IAB节点B的切换之后，即发送RRCConnectionReconfiguration之后，通过F1AP消息向IAB Donor报告其下行数据传输状态信息。
其中，该下行数据传输状态信息可以包括每个UE承载的标识以及该承载的以下信息的至少之一：
发送的最大的PDCP SN号(Highest Transmitted NR PDCP SN)。
成功传输的最大的PDCP SN号(Highest Delivered NR PDCP SN)。
重传发送的最大的PDCP SN号(Highest retransmitted NR PDCP Sequence Number)。
成功重传的最大的PDCP SN号(Highest successfully delivered retransmitted NR PDCP Sequence Number)。
此外，切换的上级源IAB节点可以在Adapt跨层读取每个回传数据包中的UE承载标识和PDCP SN号；其中，该IAB节点的回传的UE承载标识可以包括以下至少之一：UE标识和逻辑链路标识、UE标识和承载标识、IAB Donor为每个UE承载配置的在IAB网络内唯一的全局承载标识、F1接口中的TEID。
图15是根据本公开实施例的IAB节点进行切换的通过临时路由传递需要重发的数据包的信令流程图，如图15所示的步骤4a，在IAB Donor和上级目标IAB节点D交互F1AP信令为IAB节点B创建上下文之后，IAB Donor还应该在上级目标IAB节点D中进行相应的路由配置，以使得上级目标IAB节点D能将收到的去往IAB节点B和IAB节点A的数据包都发送到IAB节点B。其中，IAB Donor还可以在上级目标IAB节点D的上级IAB节点中进行相应的路由配置，以使得上述上级IAB节点能将收到的去往IAB节点B和IAB节点A的数据包都发送到IAB节点D。
如图15所示的步骤6a，为了不在切换过程丢失下行数据，IAB Donor可以在在确认进行某个IAB节点的切换并发送UE Context Modification Request消息后在IAB网络中配置一条临时的数据转发路由，该路由从切换的上级源IAB节点C到切换的上级目标IAB节点D； 其中，该临时路由还可以经过IAB Donor，需要说明的是，该临时路由配置包括对该临时路由中所有IAB节点的路由配置。其中，切换的上级源IAB节点C将收到的没有成功发送的下行数据包通过上述临时路由传递到切换的上级目标IAB节点D，并由切换的上级目标IAB节点在切换完成后进行重发。
实施例4
本公开的实施例还提供了一种存储介质，该存储介质中存储有计算机程序，其中，该计算机程序被设置为运行时执行上述任一项方法实施例1中的步骤。
可选地，在本实施例中，上述存储介质可以被设置为存储用于执行以下步骤的计算机程序：
S1，在网络中的第一IAB节点完成由与第二IAB节点连接切换到与第三IAB节点连接切换和/或连接重建后，与第一IAB节点通过一跳或多跳无线链路连接的第四IAB节点接收第一IAB节点通知的用于指示连接切换和/或连接重建完成的通知信息；
S2，第四IAB节点将通知信息通知给与第四IAB连接的用户终端UE。
本公开的实施例还提供了一种存储介质，该存储介质中存储有计算机程序，其中，该计算机程序被设置为运行时执行上述任一项方法实施例2中的步骤。
可选地，在本实施例中，上述存储介质可以被设置为存储用于执行以下步骤的计算机程序：
S1，在网络中的第一IAB节点完成由与第二IAB节点连接切换到与第三IAB节点连接切换和/或连接重建后，IAB Donor节点向与连接切换和/或连接重建相关的IAB节点发送路由配置信息；
S2，IAB Donor节点接收相关的IAB节点响应于路由配置信息反馈的路由配置确认信息。
本公开的实施例还提供了一种存储介质，该存储介质中存储有计算机程序，其中，该计算机程序被设置为运行时执行上述任一项方法实施例3中的步骤。
可选地，在本实施例中，上述存储介质可以被设置为存储用于执行以下步骤的计算机程序：
S1，在网络中的第一IAB节点完成由与第二IAB节点连接切换到与第三IAB节点连接切换和/或连接重建后，第二IAB节点向IAB Donor节点发送下行数据传输状态信息。
可选地，在本实施例中，上述存储介质可以包括但不限于：U盘、只读存储器(Read-Only Memory，简称为ROM)、随机存取存储器(Random Access Memory，简称为RAM)、移动硬盘、磁碟或者光盘等各种可以存储计算机程序的介质。
本公开的实施例还提供了一种电子装置，包括存储器和处理器，该存储器中存储有计算机程序，该处理器被设置为运行计算机程序以执行上述任一项方法实施例1中的步骤。
可选地，上述电子装置还可以包括传输设备以及输入输出设备，其中，该传输设备和上述处理器连接，该输入输出设备和上述处理器连接。
可选地，在本实施例中，上述处理器可以被设置为通过计算机程序执行以下步骤：
S1，所述IAB网络中的第一IAB节点从第三IAB节点连接切换和/或连接重建到第四IAB节点；
S2，第二IAB节点接收第一IAB节点发送的通知信息
S3，所述第二IAB节点将所述通知信息通知给与所述第二IAB连接的用户终端UE。
本公开的实施例还提供了一种电子装置，包括存储器和处理器，该存储器中存储有计算机程序，该处理器被设置为运行计算机程序以执行上述任一项方法实施例2中的步骤。
可选地，上述电子装置还可以包括传输设备以及输入输出设备，其中，该传输设备和上述处理器连接，该输入输出设备和上述处理器连接。
可选地，在本实施例中，上述处理器可以被设置为通过计算机程序执行以下步骤：
S1，在网络中的第一IAB节点完成由与第三IAB节点连接切换到与第四IAB节点连接切换和/或连接重建后，IAB Donor节点向与连接切换和/或连接重建相关的IAB节点发送路由配置信息；
S2，IAB Donor节点接收相关的IAB节点响应于路由配置信息反馈的路由配置确认信息。
本公开的实施例还提供了一种电子装置，包括存储器和处理器，该存储器中存储有计算机程序，该处理器被设置为运行计算机程序以执行上述任一项方法实施例3中的步骤。
可选地，上述电子装置还可以包括传输设备以及输入输出设备，其中，该传输设备和上述处理器连接，该输入输出设备和上述处理器连接。
可选地，在本实施例中，上述处理器可以被设置为通过计算机程序执行以下步骤：
S1，在网络中的第一IAB节点完成由与第三IAB节点连接切换到与第四IAB节点连接切换和/或连接重建后，第三AB节点向IAB Donor节点发送下行数据传输状态信息。
可选地，本实施例中的具体示例可以参考上述实施例及可选实施方式中所描述的示例，本实施例在此不再赘述。
显然，本领域的技术人员应该明白，上述的本公开的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，可选地，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本公开不限制于任何特定的硬件和软件结合。
以上所述仅为本公开的优选实施例而已，并不用于限制本公开，对于本领域的技术人员来说，本公开可以有各种更改和变化。凡在本公开的原则之内，所作的任何修改、等同替换、改进等，均应包含在本公开的保护范围之内。
工业实用性
本公开适用于通信领域，可以解决相关技术中由于无线链路的变化，IAB节点可能在切换到其他节点后下行通知尚未解决的问题，达到了保证IAB节点完整切换的效果。

Claims (33)

  1. 一种综合接入回传IAB网络中IAB节点信息的处理方法，包括：
    第二IAB节点接收第一IAB节点发送的通知信息；
    其中，所述通知信息包括以下至少之一：用于通知连接切换事件和/或连接重建事件的通知信息、用于指示进行分组数据汇聚协议PDCP状态报告的指示信息。
  2. 根据权利要求1所述的方法，其中，在所述第二IAB节点接收第一IAB节点发送的通知信息之前，所述方法还包括：
    所述IAB网络中的第一IAB节点从第三IAB节点连接切换和/或连接重建到第四IAB节点。
  3. 根据权利要求2所述的方法，其中，在所述第二IAB节点接收第一IAB节点发送的通知信息之后，所述方法还包括：
    所述第二IAB节点将所述通知信息通知给与所述第二IAB连接的用户终端UE。
  4. 根据权利要求3所述的方法，其中，
    所述第二IAB节点通过以下至少之一的方式接收所述通知信息：通过IAB节点之间的接口、通过交互Adapt层的控制PDU、通过IAB Donor进行RRC层的信令转发、通过IAB Donor进行F1AP层的信令转发。
  5. 根据权利要求1所述的方法，其中，
    所述UE通过以下至少之一的方式接收所述通知信息：通过与各个UE单独的RRC层的信令交互、通过广播信道进行通知。
  6. 一种综合接入回传IAB网络中IAB节点信息的处理方法，包括：
    在所述IAB网络中的第一IAB节点进行从第三IAB节点到第四IAB节点的连接切换和/或连接重建过程中，IAB Donor节点向与路由更新相关的IAB节点发送路由配置信息；
    其中，所述路由更新相关的IAB节点包括以下至少之一：所述第三IAB节点、所述第四IAB节点、连接切换和/或连接重建前在所述IAB网络中所使用的旧路由所经过的IAB节点、连接切换和/或连接重建后在所述IAB网络中启用的新路由所经过的IAB节点。
  7. 根据权利要求6所述的方法，其中，在IAB Donor节点向路由更新相关的IAB节点发送路由配置信息之后，所述方法还包括：
    所述IAB Donor节点接收所述相关的IAB节点发送的路由配置确认信息。
  8. 根据权利要求6所述的方法，其中，所述方法还包括：
    所述IAB Donor节点配置临时路由，其中，所述临时路由是从所述第三IAB节点到所述第四IAB节点；所述临时路由配置包括所述临时路由中所有IAB节点的路由配置。
  9. 根据权利要求6所述的方法，其中，
    所述路由配置信息包括以下至少之一：连接切换和/或连接重建后删除的路由信息、连接切换和/或连接重建后新配置的路由配置信息、所述新配置的路由配置信息的启用信息。
  10. 根据权利要求9所述的方法，其中，
    所述新配置的路由配置信息包括：新配置的路由的所述第三IAB节点和相应的下一跳信息；所述下一跳信息为下一跳的相邻IAB节点的标识信息和/或对下一跳相邻IAB节点进行发送的RLC实体的标识信息。
  11. 根据权利要求7所述的方法，其中，
    传输所述路由配置信息或所述路由配置确认信息的方式包括以下至少之一：通过IAB节点和IAB Donor之间的RRC信令消息、通过IAB节点和IAB Donor之间的F1AP消息、通过IAB节点和IAB Donor之间的Adapt层控制消息。
  12. 一种综合接入回传IAB网络中IAB节点信息的处理方法，包括：
    在所述IAB网络中的第一IAB节点完成从第三IAB节点到第四IAB节点的连接切换和/或连接重建后，所述第三IAB节点向IAB Donor节点发送下行数据传输状态信息。
  13. 根据权利要求12所述的方法，其中，
    所述下行数据传输状态信息包括：每个UE承载的标识、所述承载的以下至少之一的信息：发送的最大的PDCP SN号、成功传输的最大的PDCP SN号、重传发送的最大的PDCP SN号、成功重传的最大的PDCP SN号。
  14. 根据权利要求13所述的方法，其中，
    其中，UE承载的标识包括以下至少之一：UE标识和逻辑链路标识、UE标识和承载标识、IAB Donor为每个UE承载配置的在IAB网络内唯一的全局承载标识、TEID。
  15. 根据权利要求12所述的方法，其中，发送所述下行数据传输状态信息的方式包括以下至少之一：
    通过IAB节点和IAB Donor之间的RRC信令消息、通过IAB节点和IAB Donor之间的F1AP消息、通过IAB节点和IAB Donor之间的Adapt层控制消息。
  16. 根据权利要求13所述的方法，其中，所述方法还包括：
    所述第三IAB节点在Adapt层读取每个数据包中的UE承载标识和PDCP SN号。
  17. 一种综合接入回传IAB网络中IAB节点信息的处理装置，应用于IAB网络中的第二IAB节点侧，包括：
    第一接收模块，设置为接收第一IAB节点发送的通知信息；
    其中，所述通知信息包括以下至少之一：用于通知连接切换事件和/或连接重建事件的通知信息、用于指示进行分组数据汇聚协议PDCP状态报告的指示信息。
  18. 根据权利要求17所述的装置，其中，IAB网络中IAB节点进行切换和/或连接重建为：所述IAB网络中的第一IAB节点从第三IAB节点连接切换和/或连接重建到第四IAB节点。
  19. 根据权利要求18所述的装置，包括：
    通知模块，设置为将所述通知信息通知给与所述第二IAB连接的用户终端UE。
  20. 根据权利要求17所述的装置，其中，
    所述第二IAB节点通过以下至少之一的方式接收通知信息：通过IAB节点之间的接口、通过交互Adapt层的控制PDU、通过IAB Donor进行RRC层的信令转发、通过IAB Donor进行F1AP层的信令转发。
  21. 根据权利要求17所述的装置，其中，所述UE通过以下至少之一的方式接收所述通知信息：
    通过与各个UE单独的RRC层的信令交互、通过广播信道进行通知。
  22. 一种综合接入回传IAB网络中IAB节点信息的处理装置，应用于IAB网络中的IAB Donor节点侧，包括：
    第一发送模块，设置为所述IAB网络中的第一IAB节点进行从第三IAB节点到第四IAB节点的连接切换和/或连接重建过程中，向与路由更新相关的IAB节点发送路由配置信息；
    其中，所述与路由更新相关的IAB节点包括以下至少之一：所述第三IAB节点、所述第四IAB节点、连接切换和/或连接重建前在所述IAB网络中所使用的旧路由所经过的IAB节点、连接切换和/或连接重建后在所述IAB网络中启用的新路由所经过的IAB节点。
  23. 根据权利要求22所述的装置，其中，所述装置包括：
    第二接收模块，设置为接收所述与路由更新相关的IAB节点响应于所述路由配置信息反馈的路由配置确认信息。
  24. 根据权利要求22所述的装置，其中，
    所述路由配置信息包括以下至少之一：连接切换和/或连接重建后删除的路由信息、连接切换和/或连接重建后新配置的路由配置信息、所述新配置的路由配置信息的启用信息。
  25. 根据权利要求24所述的装置，其中，
    所述新配置的路由配置信息包括：新配置的路由的所述第三IAB节点和相应的下一跳信息；所述下一跳信息为下一跳的相邻IAB节点的标识信息和/或对下一跳相邻IAB节点进行发送的RLC实体的标识信息。
  26. 根据权利要求22所述的装置，其中，
    传输所述路由配置信息或所述路由配置确认信息的方式包括以下至少之一：通过IAB节点和IAB Donor之间的RRC信令消息、通过IAB节点和IAB Donor之间的F1AP消息、通过IAB节点和IAB Donor之间的Adapt层控制消息。
  27. 一种综合接入回传IAB网络中IAB节点信息的处理装置，应用于IAB网络中的第三IAB节点侧，包括：
    第二发送模块，设置为在所述IAB网络中的第一IAB节点完成从第三IAB节点到第四IAB节点连接切换和/或连接重建后，向所述IAB Donor节点发送下行数据传输状态信息。
  28. 根据权利要求27所述的装置，其中，
    所述下行数据传输状态信息包括：每个UE承载的标识、所述承载的以下至少之一的信息：发送的最大的PDCP SN号、成功传输的最大的PDCP SN号、重传发送的最大的PDCP SN号、成功重传的最大的PDCP SN号；
    其中，UE承载的标识包括以下至少之一：UE标识和逻辑链路标识、UE标识和承载标识、IAB Donor为每个UE承载配置的在IAB网络内唯一的全局承载标识、TEID。
  29. 根据权利要求27所述的装置，其中，所述第二发送模块通过以下至少之一的方式发送下行数据传输状态信息：
    通过IAB节点和IAB Donor之间的RRC信令消息、通过IAB节点和IAB Donor之间的F1AP消息、通过IAB节点和IAB Donor之间的Adapt层控制消息。
  30. 根据权利要求28所述的装置，其中，所述装置还包括：
    读取模块，设置为在Adapt层读取每个数据包中的UE承载标识和PDCP SN号。
  31. 一种存储介质，其中，所述存储介质中存储有计算机程序，其中，所述计算机程序被设置为运行时执行所述权利要求1至5任一项中所述的方法。
  32. 一种存储介质，其中，所述存储介质中存储有计算机程序，其中，所述计算机程序被设置为运行时执行所述权利要求6至11任一项中所述的方法。
  33. 一种存储介质，其中，所述存储介质中存储有计算机程序，其中，所述计算机程序被设置为运行时执行所述权利要求12至16任一项中所述的方法。
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