WO2021239138A1 - 网络切换方法、装置、通信设备及系统 - Google Patents

网络切换方法、装置、通信设备及系统 Download PDF

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Publication number
WO2021239138A1
WO2021239138A1 PCT/CN2021/096961 CN2021096961W WO2021239138A1 WO 2021239138 A1 WO2021239138 A1 WO 2021239138A1 CN 2021096961 W CN2021096961 W CN 2021096961W WO 2021239138 A1 WO2021239138 A1 WO 2021239138A1
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Prior art keywords
information
target
iab node
configuration information
configuration
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PCT/CN2021/096961
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English (en)
French (fr)
Inventor
刘进华
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维沃移动通信有限公司
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Priority to EP21813954.1A priority Critical patent/EP4161147A4/en
Priority to KR1020227041452A priority patent/KR20230007442A/ko
Priority to JP2022573311A priority patent/JP7489493B2/ja
Publication of WO2021239138A1 publication Critical patent/WO2021239138A1/zh
Priority to US17/982,380 priority patent/US20230054244A1/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/14Reselecting a network or an air interface
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0011Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0033Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0055Transmission or use of information for re-establishing the radio link
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W84/00Network topologies
    • H04W84/02Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04Large scale networks; Deep hierarchical networks
    • H04W84/042Public Land Mobile systems, e.g. cellular systems
    • H04W84/047Public Land Mobile systems, e.g. cellular systems using dedicated repeater stations
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W92/00Interfaces specially adapted for wireless communication networks
    • H04W92/04Interfaces between hierarchically different network devices
    • H04W92/12Interfaces between hierarchically different network devices between access points and access point controllers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W92/00Interfaces specially adapted for wireless communication networks
    • H04W92/16Interfaces between hierarchically similar devices
    • H04W92/20Interfaces between hierarchically similar devices between access points

Definitions

  • This application belongs to the field of communication technology, and specifically relates to a network switching method, device, communication equipment, and system.
  • the Integrated Access Backhaul (IAB) system includes a distributed unit (DU) function part and a mobile terminal (Mobile Termination, MT) function part.
  • DU distributed unit
  • MT mobile terminal
  • the DUs of all IAB nodes are connected to a Centralized Unit (CU) node, and the CU node configures the DU and MT.
  • CU Centralized Unit
  • the IAB node to be switched is switched from the source parent IAB node controlled by the source CU to the target parent IAB node controlled by the target CU, that is, during the switching process, the IAB-MT of the IAB node to be switched Both the IAB-DU and the IAB-DU need to be switched to be connected to the donor IAB node and controlled by the target CU.
  • the current related technology does not have a solution for switching the IAB-DU to be switched to the target CU, so the IAB node cannot be switched from the source network (that is, the network controlled by the source CU) to the target network (the network controlled by the target CU). .
  • the purpose of the embodiments of the present application is to provide a network switching method, device, communication device, and system, which can solve the problem that the IAB node cannot be switched from the source network to the target network in related technologies.
  • a network switching method which is applied to a source CU, and the network switching method includes: sending a switching request message to a target CU, the switching request message includes first target information, and the first target information is to be switched Context information of the DU of the IAB node of the IAB node; Receive a handover response message sent by the target CU, the handover response message includes first configuration information, the first configuration information is the information configured by the target CU to the DU for network handover; The node sends first configuration information, and the first configuration information is used by the IAB node to perform the DU handover process.
  • a network switching method which is applied to a target CU, and the network switching method includes: receiving a switching request message sent by a source CU, the switching request message includes first target information, and the first target information is to be Context information of the DU of the handover IAB node; according to the handover request message, a handover response message is sent to the source CU, the handover response message includes first configuration information, and the first configuration information is configured by the target CU to the DU for network handover Information.
  • a network switching method which is applied to an IAB node, and the network switching method includes: receiving first configuration information sent by a source CU, where the first configuration information is used for the DU configured by the target CU to the IAB node Network switching information; according to the first configuration information, the DU switching process is executed.
  • a network switching device in a fourth aspect, includes a sending module and a receiving module.
  • the sending module is configured to send a handover request message to the target CU.
  • the handover request message includes first target information, and the first target information is context information of the DU of the IAB node to be handed over.
  • the receiving module is configured to receive a handover response message sent by the target CU, where the handover response message includes first configuration information, and the first configuration information is information configured by the target CU to the DU for network switching.
  • the sending module is further configured to send first configuration information to the IAB node, where the first configuration information is used by the IAB node to perform the DU handover process.
  • a network switching device in a fifth aspect, includes a receiving module and a sending module.
  • the receiving module is configured to receive a handover request message sent by the source CU.
  • the handover request message includes first target information, and the first target information is the context information of the DU of the IAB node to be handed over.
  • the sending module is configured to send a handover response message to the source CU according to the handover request message.
  • the handover response message includes first configuration information, and the first configuration information is information configured by the target CU to the DU for network switching.
  • a network switching device in a sixth aspect, includes: a receiving module and an executing module.
  • the receiving module is configured to receive first configuration information sent by the source CU, where the first configuration information is information used for network switching that is configured by the target CU to the DU of the IAB node.
  • the execution module is used to execute the DU switching process according to the first configuration information.
  • a CU in a seventh aspect, includes a processor, a memory, and a program or instruction that is stored on the memory and can run on the processor.
  • the program or instruction When the program or instruction is executed by the processor, Implement the steps of the network switching method as described in the first aspect.
  • a CU in an eighth aspect, includes a processor, a memory, and a program or instruction that is stored on the memory and can run on the processor.
  • the program or instruction When the program or instruction is executed by the processor, Implement the steps of the network handover method as described in the second aspect.
  • an IAB node in a ninth aspect, includes a processor, a memory, and a program or instruction that is stored on the memory and can run on the processor. When executed, the steps of the network switching method as described in the third aspect are realized.
  • a communication system which includes the network switching device according to the fourth aspect, the network switching device according to the fifth aspect, and the network switching device according to the sixth aspect; or,
  • the communication system includes the CU described in the seventh aspect, the CU described in the eighth aspect, and the IAB node described in the ninth aspect.
  • a readable storage medium is provided, and a program or instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the steps of the network switching method as described in the first aspect are implemented, Either implement the steps of the network handover method as described in the second aspect, or implement the steps of the network handover method as described in the third aspect.
  • a chip in a twelfth aspect, includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run a program or an instruction to implement the
  • the network switching method either implements the network switching method described in the second aspect, or implements the network switching method described in the third aspect.
  • the source CU can send the context information of the DU of the IAB node to be switched to the target CU, so that the target CU can send the first configuration information to the source CU according to the context information of the DU (that is, the target CU Information configured to the DU for network switching), so that the source CU sends the first configuration information to the IAB node, so that the IAB node executes the DU switching process according to the first configuration information, so that the IAB-DU to be switched can be realized Switch from the source network to the target network.
  • the context information of the DU that is, the target CU Information configured to the DU for network switching
  • FIG. 1 is a schematic diagram of the architecture of an IAB system provided by an embodiment of this application.
  • FIG. 2 is a block diagram of a wireless communication system provided by an embodiment of this application.
  • FIG. 3 is a schematic diagram of the CU-DU structure of an IAB system provided by an embodiment of the application.
  • FIG. 4 is one of the schematic diagrams of a network switching method provided by an embodiment of this application.
  • FIG. 5 is the second schematic diagram of a network handover method provided by an embodiment of this application.
  • FIG. 6 is one of the schematic structural diagrams of a network switching device provided by an embodiment of this application.
  • FIG. 7 is the second structural diagram of a network switching device provided by an embodiment of this application.
  • FIG. 8 is the third structural diagram of a network switching device provided by an embodiment of this application.
  • FIG. 9 is a schematic structural diagram of a communication device provided by an embodiment of this application.
  • FIG. 10 is a schematic diagram of hardware of a CU provided by an embodiment of the application.
  • FIG. 11 is a schematic diagram of hardware of an IAB node provided by an embodiment of the application.
  • first and second in the specification and claims of this application are used to distinguish similar objects, but not to describe a specific sequence or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first” and “second” It is usually one type, and the number of objects is not limited.
  • the first object may be one or more.
  • “and/or” in the description and claims means at least one of the connected objects, and the character “/” generally means that the associated objects before and after are in an "or” relationship.
  • FIG. 1 shows a schematic diagram of the architecture of an IAB system.
  • An IAB node includes a DU functional part and an MT functional part. Relying on MT, an access point (ie IAB node) can find an upstream access point (parent IAB node) and establish a wireless connection with the DU of the upstream access point. This wireless connection is called a wireless backhaul link (backhaul). link).
  • backhaul wireless backhaul link
  • the IAB node turns on its DU function, and the DU provides cell services, that is, the DU can provide access services for user equipment (UE).
  • UE user equipment
  • a self-backhauling loop includes a donor IAB node (or IAB donor), and the donor IAB node has a wired transmission network directly connected.
  • IAB donor or IAB donor
  • the introduction of the IAB system is to solve the situation that the wired transmission network is not in place when the access points are densely deployed. That is, when there is no wired transmission network, the access point can rely on wireless backhaul.
  • the UE can also be called a terminal device.
  • the UE can be a mobile phone, a tablet (Personal Computer), a laptop (Laptop Computer) or a notebook, a personal digital assistant (PDA), a handheld computer, or a netbook.
  • Ultra-mobile personal computer UMPC
  • mobile Internet device Mobile Internet Device, MID
  • wearable device Wearable Device
  • vehicle-mounted device VUE
  • PUE pedestrian terminal
  • Wearable devices include: bracelets, earphones, glasses, etc. It should be noted that the embodiments of this application do not limit the specific type of UE.
  • LTE Long Term Evolution
  • LTE-A Long Term Evolution-Advanced
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single-carrier Frequency-Division Multiple Access
  • system and “network” in the embodiments of the present application are often used interchangeably, and the described technology can be used for the aforementioned systems and radio technologies as well as other systems and radio technologies.
  • NR New Radio
  • 6G 6th Generation
  • Fig. 2 shows a block diagram of a wireless communication system to which an embodiment of the present application can be applied.
  • the wireless communication system includes at least one IAB node 01, a source CU 02 and a target CU 03.
  • At least one IAB node 01 can establish a connection with the source CU 02, and the source CU 02 can establish a connection with the target CU 03.
  • the source CU and the target CU may exchange information (for example, the handover request message in the embodiment of the present application) to control the IAB node to switch the network (for example, switch from the network controlled by the source CU to the network controlled by the target CU).
  • information for example, the handover request message in the embodiment of the present application
  • Figure 3 shows a schematic diagram of the CU-DU structure of an IAB system.
  • the DUs of all IAB nodes are connected to a CU node, and this node configures the DU through F1 layer application protocol (F1-Application Protocol, F1-AP) signaling.
  • the CU configures the MT through RRC signaling.
  • the donor IAB node has no MT function part.
  • the network switching method may include the following steps 201 to 207.
  • Step 201 The source CU sends a handover request message to the target CU.
  • the handover request message (migration request) includes first target information, and the first target information is context (context) information of the DU of the IAB node to be handed over.
  • the above-mentioned first target information includes at least one of the following: DU system information, DU synchronization signal block (Synchronization Signal Block, SSB) information, DU physical cell identifier (Physical Cell Identifier, PCI) information/E-UTRAN Cell Global Identity (ECGI) information, DU Tracking Area Code (TAC) information, DU’s RANAC (i.e.
  • Radio Access Network Radio Access Network
  • RAN Radio Access Network
  • Area Code Area Code, AC
  • DU uplink and downlink that is, direction
  • DU performance information DU uplink and downlink load
  • DU and IAB node MT power allocation information DU Corresponding guard symbol (desired/provided guard symbol) information
  • DU corresponding backhaul/access link interference information DU corresponding backhaul/access link interference information.
  • the system information of the aforementioned DU is any one of the following: master system information block (Master Information Block, MIB) information, target system information block (System Information Block, SIB) information (for example, SIB1 information) ) And other SIB information.
  • the other SIB information is SIB information other than the target SIB information.
  • the system information of the DU includes at least one of the following: Public Land Mobile Network (PLMN) information of the cell corresponding to the DU, and the bandwidth part (Bandwidth Part) corresponding to the DU.
  • PLMN Public Land Mobile Network
  • BWP bandwidth part
  • carrier information corresponding to DU slice information corresponding to DU
  • general random access information corresponding to DU general random access information corresponding to DU
  • paging configuration information corresponding to DU paging configuration information corresponding to DU
  • corresponding DU Neighbor cell information cell selection configuration information corresponding to DU, transmission configuration information of broadcast message corresponding to DU, and configuration information of radio resources corresponding to DU.
  • the system information of the above DU is the system information of the DU that is in effect
  • the above SSB information is the SSB configuration information being broadcast by the DU
  • the above general random access information is information that can be used by both the IAB node and the UE
  • the above DU The corresponding cell can be understood as the cell provided by the DU.
  • the sending configuration information of the broadcast message corresponding to the DU may include at least one of the following: a period, a list of messages being broadcast, a list of messages based on a handover request message, and a system message request configuration.
  • the above-mentioned SSB information may include at least one of the following: time offset, period, number of SSBs (that is, L value), SSB transmission power, and occupied frequency.
  • the aforementioned DU's capability information includes at least one of the following: DU scheduling/transmission/reception processing delay, DU radio frequency information, frequency bands and carriers supported by the DU, and DU
  • the dynamic range of the power adjustment of the DU includes at least one of the following: DU scheduling/transmission/reception processing delay, DU radio frequency information, frequency bands and carriers supported by the DU, and DU
  • the dynamic range of the power adjustment of the DU includes at least one of the following: DU scheduling/transmission/reception processing delay, DU radio frequency information, frequency bands and carriers supported by the DU, and DU
  • the dynamic range of the power adjustment of the DU the indication information of whether the DU supports dual connectivity, the indication information of whether the DU supports (EUTRA-NR, EN)-DC, the multiplexing mode supported by the DU, and the subcarrier spacing supported by the antenna configuration corresponding to the DU ( Sub-Carrier Spacing, SCS) information, scheduling mode supported by DU, Discontinuous Reception (DR
  • the above-mentioned radio frequency information may include at least one of the following: maximum transmission power or minimum transmission power.
  • the foregoing multiplexing mode may include at least one of the following: cross-hop time division multiplexing (TDM), frequency division multiplexing (FDM) , Space Division Multiplexing (SDM) and full duplex (full duplexing).
  • TDM cross-hop time division multiplexing
  • FDM frequency division multiplexing
  • SDM Space Division Multiplexing
  • full duplex full duplexing
  • the foregoing antenna configuration may include at least one of the following: a radio frequency channel/antenna used by IAB-DU and IAB-MT respectively, and a radio frequency channel/antenna shared by IAB-DU and IAB-MT.
  • the foregoing scheduling mode may include at least one of the following: Type A and Type B.
  • the above-mentioned handover request message further includes third target information, and the third target information is related context information of the IAB node.
  • the above-mentioned third target information includes at least one of the following: information of the BAP entity (entity) corresponding to the IAB node, backhaul (BH) from the IAB node to the parent IAB node or the child IAB node ) Radio Link Control (RLC) channel configuration information, IAB node routing (route/path) configuration information, IAB node local load distribution configuration information, IAB node bearer mapping configuration Information, the congestion status information of a route or BH RLC channel, the measurement configuration information of the IAB node to the NR cell or the LTE cell, and the Internet Protocol (IP) address information corresponding to the IAB node.
  • entity entity
  • BH backhaul
  • RLC Radio Link Control
  • IAB node routing (route/path) configuration information IAB node local load distribution configuration information
  • IAB node bearer mapping configuration Information IAB node bearer mapping configuration Information
  • IP Internet Protocol
  • the above-mentioned BAP entity information may include at least one of the following: BAP address information, and BAP address information of the parent/child IAB node.
  • the above-mentioned handover request message also includes at least one of the following: capability information of the MT of the IAB node (that is, specific capability information of the IAB-MT) and type information of the MT, and the capability information is used for Indicates the UE function supported by the MT, and the type information of the MT is used to indicate the type of the MT.
  • the above-mentioned capability information may specifically be a minimum function set indication of the IAB-MT, and the minimum function set indication is used to indicate the basic UE functions supported by the IAB-MT.
  • the above-mentioned IP address information includes at least one of the following: the IP address of the IAB-DU and the IP address of the IAB-MT.
  • the handover request message further includes second target information, and the second target information is context information of the MT of the IAB node.
  • the handover response message further includes second configuration information
  • the second configuration information is information configured by the target CU to the MT for network handover.
  • the foregoing second configuration information includes at least one of the following: signaling radio bearer (Signaling Radio Bearer, SRB) information, data radio bearer (Data Radio Bearer, DRB) information, serving cell information, Power control information, measurement report information, cell configuration information of the Uu interface of the DU, time-frequency resource configuration information, and routing information.
  • Signaling radio bearer Signaling Radio Bearer, SRB
  • Data Radio Bearer Data Radio Bearer, DRB
  • serving cell information serving cell information
  • Power control information measurement report information
  • cell configuration information of the Uu interface of the DU time-frequency resource configuration information
  • routing information includes at least one of the following: signaling radio bearer (Signaling Radio Bearer, SRB) information, data radio bearer (Data Radio Bearer, DRB) information, serving cell information, Power control information, measurement report information, cell configuration information of the Uu interface of the DU, time-frequency resource configuration information, and routing information.
  • the handover response message further includes at least one of the following: Backhaul Adaptation Protocol (BAP) entity configuration information and target routing configuration information configured by the target CU to the IAB node,
  • BAP Backhaul Adaptation Protocol
  • the target routing configuration information is used to indicate the forwarding data routing relationship of the IAB node in the network controlled by the target CU.
  • Step 202 The target CU receives the handover request message sent by the source CU.
  • Step 203 The target CU sends a handover response message to the source CU according to the handover request message.
  • the handover response message includes first configuration information, and the first configuration information is information configured by the target CU to the DU for network handover.
  • the target CU may determine that the DU is in the target network (for example, including target CU-Control Plane (CP), target CU-User Plane (User Plane, UP) and the target parent IAB-DU node) complete the pre-configuration.
  • target CU-Control Plane CP
  • target CU-User Plane User Plane, UP
  • target parent IAB-DU node the target parent IAB-DU node
  • the target CU may establish a relevant pre-configuration for the F1 channel of the DU connected to the IAB-DU to be handed over in the target network, so as to perform network handover configuration for the DU.
  • the target CU may generate a handover response message about the IAB node, and send the handover response message to the source CU.
  • the target CU may decide whether to change the configuration of the IAB-DU node to be switched, and package the configuration information of the IAB-DU node to be switched into a switching response message (Migration Request Response).
  • Step 204 The source CU receives the handover response message sent by the target CU.
  • Step 205 The source CU sends the first configuration information to the IAB node.
  • the above-mentioned first configuration information is used for the IAB node to perform the DU handover process.
  • Step 206 The IAB node receives the first configuration information sent by the source CU.
  • Step 207 The IAB node executes the DU handover process according to the first configuration information.
  • the DU in the IAB node (which may be referred to as IAB-DU) can execute the network switching process (that is, the process of switching from the network controlled by the source CU to the network controlled by the target CU) according to the received first configuration information ), and after completing the network switching, send a reconfiguration complete message to the target CU.
  • the network switching process that is, the process of switching from the network controlled by the source CU to the network controlled by the target CU
  • the embodiment of the present application provides a network switching method, because the source CU can send the context information of the DU of the IAB node to be switched to the target CU, so that the target CU can send the first configuration information to the source CU according to the context information of the DU (That is, the information used for network switching configured by the target CU to the DU), so that the source CU sends the first configuration information to the IAB node, so that the IAB node performs the DU switching process according to the first configuration information, so that the waiting Switch IAB-DU from the source network to the target network.
  • the context information of the DU That is, the information used for network switching configured by the target CU to the DU
  • the network handover method provided in the embodiment of the present application further includes the following steps 301 to 303.
  • Step 301 The source CU sends second configuration information to the IAB node.
  • the foregoing second configuration information is information configured by the target CU to the MT for network handover, and the second configuration information is used by the IAB node to perform the MT handover process.
  • Step 302 The IAB node receives the second configuration information sent by the source CU.
  • Step 303 The IAB node executes the MT handover process according to the second configuration information.
  • the execution sequence of the foregoing step 301 to step 303 and the foregoing step 205 to step 207 is not limited in the embodiment of the present application.
  • the above steps 205 to 207 can be performed first, and then the above steps 301 to 303; or, in another implementation mode, the above steps 301 to step can be performed first.
  • 303 perform the above steps 205 to 207 again; or, in another implementation manner, the above steps 205 to 207 and the above steps 301 to 303 can be performed at the same time.
  • the source CU may send the context information of the MT of the IAB node to be switched to the target CU, so that the target CU may send the second configuration information to the source CU according to the context information of the MT (that is, the target CU is configured to MT information used for network switching), so that the source CU sends the second configuration information to the IAB node, so that the IAB node performs the MT handover process according to the second configuration information, so that the IAB-MT to be handed over can be realized from the source
  • the network is switched to the target network.
  • the following describes the switching process of the IAB node to be switched from the source CU network to the target CU network provided by the embodiment of the present application through a specific implementation manner (that is, the following steps 1 to 11).
  • Step 1 The source CU sends a switching request of the IAB node to be switched to the target CU.
  • the IAB-MT context (CONTEXT) information of the IAB node and the IAB-DU context (CONTEXT) information of the IAB node may be included.
  • the target CU completes the pre-configuration for the IAB-MT in the target network (including target CU-CP, target CU-UP, target parent IAB node) according to the received IAB-MT context information of the IAB node, for example, including Radio bearer (radio bearer, such as SRB and DRB) information configuration, BAP entity (BAP entity) configuration.
  • Radio bearer radio bearer, such as SRB and DRB
  • BAP entity BAP entity
  • the target CU completes the pre-configuration for the IAB-DU in the target network (including the target CU-CP, the target CU-UP, and the target parent IAB-DU node) according to the received IAB-DU context information of the IAB node, For example, it includes the pre-configuration related to the establishment of the F1 channel connected to the IAB-DU to be handed over in the target network.
  • Step 4 The target CU pre-configures the route in the target network for the IAB-MT and IAB-DU of the IAB node to be switched, and the route is pre-configured to establish the forwarding data routing relationship of the IAB node to be switched on the target network.
  • Step 5 After completing the above steps 2, 3, and 4, the target CU generates a handover response message about the IAB node to be handed over, and sends the handover response message to the source CU.
  • the aforementioned handover response message contains the IAB-MT and IAB-DU pre-configuration information of the IAB node to be handed over by the target CU.
  • the pre-configuration information provided by the target CU for the IAB-MT to be handed over may also include routing BAP entity configuration information and routing configuration. information.
  • the target CU provides pre-configuration information for the IAB-MT to be handed over, including cell configuration information of the Uu interface of the IAB-DU, available time-frequency resource configuration information, routing information, and so on.
  • Step 6 After the source CU receives the IAB-DU pre-configuration information of the IAB node to be switched from the target CU, it sends the pre-configuration information to the IAB-DU to be switched, and the IAB-DU to be switched is completed according to the received pre-configuration message Pre-configured.
  • Step 7 After the source CU successfully sends the IAB-DU pre-configuration information of the IAB node to be switched, it sends the IAB-MT pre-configuration information of the IAB node to be switched from the target CU to the IAB-MT, and the IAB-MT receives The received pre-configuration message completes the pre-configuration.
  • Step 8 The IAB-MT of the IAB node to be handed over initiates a random access procedure according to the pre-configuration to establish a wireless connection with the target parent IAB node.
  • Step 9 The IAB-MT of the IAB node to be switched sends a reconfiguration complete message to the target CU.
  • Step 10 The IAB-DU of the IAB node to be handed over sends a reconfiguration complete message to the target CU.
  • Step 11 The target CU node notifies the source IAB node of the successful completion of the handover, and the source IAB node initiates a signaling process regarding the context deletion information of the IAB node to be handed over.
  • the source CU may send the context information of the DU and the context information of the MT of the IAB node to be switched to the target CU, so that the target CU may send to the source CU according to the context information of the DU and the context information of the MT
  • the configuration information of the DU that is, the first configuration information
  • the configuration information of the MT that is, the second configuration information
  • the source CU sends the configuration information of the DU and the configuration information of the MT to the IAB node, so that the IAB node according to the DU
  • the configuration information of the DU performs the switching process of the DU, and the switching process of the MT is performed according to the configuration information of the MT, so that the IAB nodes to be switched (ie, IAB-DU and IAB-MT) are switched from the source network to the target network.
  • FIG. 6 shows a schematic diagram of a possible structure of the network switching device involved in the embodiment of the present application.
  • the network switching device 60 provided in the embodiment of the present application may include: a sending module 61 and a receiving module 62.
  • the sending module 61 is configured to send a handover request message to the target CU.
  • the handover request message includes first target information, and the first target information is the context information of the DU of the IAB node to be handed over.
  • the receiving module 62 is configured to receive a handover response message sent by the target CU, where the handover response message includes first configuration information, and the first configuration information is information configured by the target CU to the DU for network switching.
  • the sending module 61 is further configured to send first configuration information to the IAB node, where the first configuration information is used by the IAB node to perform a DU handover process.
  • the handover request message further includes second target information, and the second target information is context information of the MT of the IAB node;
  • the handover response message further includes second configuration information, the second The configuration information is information configured by the target CU to the MT for network switching.
  • the aforementioned sending module 61 is further configured to send second configuration information to the IAB node, where the second configuration information is used by the IAB node to perform the MT handover process.
  • the foregoing second configuration information includes at least one of the following: SRB information, DRB information, serving cell information, power control information, measurement report information, cell configuration information of the Uu interface of the DU, and time-frequency resources Configuration information and routing information.
  • the above handover response message further includes at least one of the following: BAP entity configuration information and target routing configuration information configured by the target CU to the IAB node, and the target routing configuration information is used to indicate that the IAB node is at the target The forwarding data routing relationship in the network controlled by the CU.
  • the foregoing first target information includes at least one of the following: DU system information, DU SSB information, DU PCI information, DU TAC information, DU RAN-based RANAC information, DU
  • DU system information includes at least one of the following: DU system information, DU SSB information, DU PCI information, DU TAC information, DU RAN-based RANAC information, DU
  • the uplink and downlink information the performance information of the DU, the uplink and downlink load of the DU, the power allocation information between the DU and the MT of the IAB node, the protection symbol information corresponding to the DU, and the interference information of the backhaul link corresponding to the DU.
  • the system information of the aforementioned DU is any one of the following: MIB information, target SIB information, and other SIB information
  • the other SIB information is SIB information other than the target SIB information.
  • the above-mentioned DU system information includes at least one of the following: PLMN information of the cell corresponding to the DU, BWP information corresponding to the DU, carrier information corresponding to the DU, slice information corresponding to the DU, general random access information corresponding to the DU, and information corresponding to the DU IAB exclusive random access information, paging configuration information corresponding to DU, neighbor cell information corresponding to DU, cell selection configuration information corresponding to DU, transmission configuration information of broadcast messages corresponding to DU, and wireless resource configuration information corresponding to DU.
  • the above-mentioned DU performance information includes at least one of the following: DU scheduling/sending/receiving processing delay, DU radio frequency information, frequency bands and carriers supported by the DU, and dynamics of DU power adjustment Range, indication information whether the DU supports dual connectivity, indication information whether the DU supports EN-DC, the multiplexing mode supported by the DU, the SCS information supported by the antenna configuration corresponding to the DU, the scheduling mode supported by the DU, the DRX function information of the DU, The preemptive BSR function information corresponding to the DU, the downlink single-hop flow control function information of the DU, the RRC inactive state function information corresponding to the DU, the RRC idle state function information corresponding to the DU, the service type information supported by the DU, and the related MIMO support of the DU Ability information.
  • the aforementioned handover request message further includes third target information, and the third target information is related context information of the IAB node.
  • the above-mentioned third target information includes at least one of the following: information of the BAP entity corresponding to the IAB node, configuration information of the BH RLC channel from the IAB node to the parent IAB node or child IAB node, routing configuration information of the IAB node, and local load of the IAB node Offload configuration information, IAB node bearer mapping configuration information, a route or BH RLC channel congestion status information, IAB node measurement configuration information for NR cells or LTE cells, and IP address information corresponding to IAB nodes.
  • the handover request message also includes at least one of the following: MT capability information of the IAB node and MT type information, and the capability information is used to indicate the user equipment UE function supported by the MT.
  • the network switching device provided in the embodiment of the present application can implement each process implemented by the source CU in the foregoing method embodiment. To avoid repetition, the specific description will not be repeated here.
  • the embodiment of the present application provides a network switching device, because the source CU can send the context information of the DU of the IAB node to be switched to the target CU, so that the target CU can send the first configuration information to the source CU according to the context information of the DU (That is, the information used for network switching configured by the target CU to the DU), so that the source CU sends the first configuration information to the IAB node, so that the IAB node performs the DU switching process according to the first configuration information, so that the waiting Switch IAB-DU from the source network to the target network.
  • the context information of the DU That is, the information used for network switching configured by the target CU to the DU
  • the source CU sends the first configuration information to the IAB node, so that the IAB node performs the DU switching process according to the first configuration information, so that the waiting Switch IAB-DU from the source network to the target network.
  • the network switching device in the embodiment of the present application may be a device, or a component, integrated circuit, or chip in the source CU.
  • FIG. 7 shows a schematic diagram of a possible structure of a network switching device involved in an embodiment of the present application.
  • the network switching device 70 provided in the embodiment of the present application may include: a receiving module 71 and a sending module 72.
  • the receiving module 71 is configured to receive a handover request message sent by the source CU.
  • the handover request message includes first target information, and the first target information is the context information of the DU of the IAB node to be handed over.
  • the sending module 72 is configured to send a handover response message to the source CU according to the handover request message.
  • the handover response message includes first configuration information, and the first configuration information is information configured by the target CU to the DU for network switching.
  • the handover request message further includes second target information, and the second target information is context information of the MT of the IAB node.
  • the handover response message also includes second configuration information, which is information configured by the target CU to the MT for network handover.
  • the foregoing second configuration information includes at least one of the following: SRB information, DRB information, serving cell information, power control information, measurement report information, cell configuration information of the Uu interface of the DU, and time-frequency resources Configuration information and routing information.
  • the above handover response message further includes at least one of the following: BAP entity configuration information and target routing configuration information configured by the target CU to the IAB node, and the target routing configuration information is used to indicate that the IAB node is at the target The forwarding data routing relationship in the network controlled by the CU.
  • the foregoing first target information includes at least one of the following: DU system information, DU SSB information, DU PCI information, DU TAC information, DU RAN-based RANAC information, DU
  • DU system information includes at least one of the following: DU system information, DU SSB information, DU PCI information, DU TAC information, DU RAN-based RANAC information, DU
  • the uplink and downlink information the performance information of the DU, the uplink and downlink load of the DU, the power allocation information between the DU and the MT of the IAB node, the protection symbol information corresponding to the DU, and the interference information of the backhaul link corresponding to the DU.
  • the system information of the aforementioned DU is any one of the following: MIB information, target SIB information, and other SIB information
  • the other SIB information is SIB information other than the target SIB information.
  • the above-mentioned DU system information includes at least one of the following: PLMN information of the cell corresponding to the DU, BWP information corresponding to the DU, carrier information corresponding to the DU, slice information corresponding to the DU, general random access information corresponding to the DU, and information corresponding to the DU IAB exclusive random access information, paging configuration information corresponding to DU, neighbor cell information corresponding to DU, cell selection configuration information corresponding to DU, transmission configuration information of broadcast messages corresponding to DU, and wireless resource configuration information corresponding to DU.
  • the above-mentioned DU performance information includes at least one of the following: DU scheduling/sending/receiving processing delay, DU radio frequency information, frequency bands and carriers supported by the DU, and dynamics of DU power adjustment Range, indication information whether the DU supports dual connectivity, indication information whether the DU supports EN-DC, the multiplexing mode supported by the DU, the SCS information supported by the antenna configuration corresponding to the DU, the scheduling mode supported by the DU, the DRX function information of the DU, The preemptive BSR function information corresponding to the DU, the downlink single-hop flow control function information of the DU, the RRC inactive state function information corresponding to the DU, the RRC idle state function information corresponding to the DU, the service type information supported by the DU, and the related MIMO support of the DU Ability information.
  • the aforementioned handover request message further includes third target information, and the third target information is related context information of the IAB node.
  • the above-mentioned third target information includes at least one of the following: information of the BAP entity corresponding to the IAB node, configuration information of the BH RLC channel from the IAB node to the parent IAB node or child IAB node, routing configuration information of the IAB node, and local load of the IAB node Offload configuration information, IAB node bearer mapping configuration information, a route or BH RLC channel congestion status information, IAB node measurement configuration information for NR cells or LTE cells, and IP address information corresponding to IAB nodes.
  • the handover request message also includes at least one of the following: MT capability information of the IAB node and MT type information, and the capability information is used to indicate the user equipment UE function supported by the MT.
  • the network switching device provided in the embodiment of the present application can implement each process implemented by the target CU in the foregoing method embodiment. To avoid repetition, the specific description will not be repeated here.
  • the embodiment of the present application provides a network switching device, because the target CU can send first configuration information to the source CU according to the context information of the DU of the IAB node to be switched sent by the source CU (that is, the target CU is configured to the DU for the network Switching information), so that the source CU sends the first configuration information to the IAB node, so that the IAB node executes the DU switching process according to the first configuration information, so that the to-be-switched IAB-DU can be switched from the source network to the target network .
  • the network switching device in the embodiment of the present application may be a device, or a component, integrated circuit, or chip in the target CU.
  • FIG. 8 shows a schematic diagram of a possible structure of a network switching device involved in an embodiment of the present application.
  • the network switching device 80 provided in the embodiment of the present application may include: a receiving module 81 and an executing module 82.
  • the receiving module 81 is configured to receive first configuration information sent by the source CU, where the first configuration information is information used for network switching that is configured by the target CU to the DU of the IAB node.
  • the execution module 82 is configured to execute the DU switching process according to the first configuration information.
  • the foregoing receiving module 81 is further configured to receive second configuration information sent by the source CU, where the second configuration information is information configured by the target CU to the MT for network switching.
  • the above-mentioned execution module 82 is also used to execute the MT handover process according to the second configuration information.
  • the foregoing second configuration information includes at least one of the following: SRB information, DRB information, serving cell information, power control information, measurement report information, cell configuration information of the Uu interface of the DU, and time-frequency resources Configuration information and routing information.
  • the network switching device provided by the embodiment of the present application can implement each process implemented by the IAB node in the foregoing method embodiment. To avoid repetition, the specific description will not be repeated here.
  • the embodiment of the present application provides a network switching device. Since the IAB node can execute the DU switching process according to the first configuration information sent by the source CU (that is, the information configured by the target CU to the DU for network switching), it can realize the waiting Switch IAB-DU from the source network to the target network.
  • the first configuration information sent by the source CU that is, the information configured by the target CU to the DU for network switching
  • the network switching device in the embodiment of the present application may be a device, or a component, integrated circuit, or chip in an IAB node.
  • an embodiment of the present application further provides a communication device 90, including a processor 91, a memory 92, and a program or instruction that is stored on the memory 92 and can run on the processor 91,
  • a communication device 90 including a processor 91, a memory 92, and a program or instruction that is stored on the memory 92 and can run on the processor 91
  • the communication device 90 is the source CU
  • the program or instruction is executed by the processor 91
  • each process implemented by the source CU in the foregoing method embodiment is realized, and the same technical effect can be achieved.
  • the communication device 90 is an IAB node
  • the program or instruction is executed by the processor 91
  • each process implemented by the IAB node in the foregoing method embodiment is realized, and the same technical effect can be achieved. To avoid repetition, details are not repeated here.
  • FIG. 10 is a schematic diagram of the hardware structure of a CU that implements the embodiment of the present application.
  • the hardware structure of the CU shown in FIG. 10 may be the hardware structure of the source CU or the hardware structure of the target CU in the foregoing embodiment.
  • the CU 100 includes but is not limited to: at least one processor 101, a memory 102, a user interface 103, and at least one network interface 104.
  • the various components in the CU 100 are coupled together through the bus system 105.
  • the structure of the CU 100 shown in FIG. 10 does not constitute a limitation on the CU, and the CU may include more or less components than those shown in FIG. Components, or different component arrangements.
  • At least one network interface 104 is configured to send a handover request message to a target CU.
  • the handover request message includes first target information, and the first target information is context information of the DU of the IAB node to be handed over;
  • a configuration information is used for the IAB node to perform the DU handover process.
  • At least one network interface 104 is configured to receive a handover request message sent by the source CU, the handover request message includes first target information, and the first target information is context information of the DU of the IAB node to be handed over; according to the handover request Message, a handover response message is sent to the source CU, the handover response message includes first configuration information, and the first configuration information is information configured by the target CU to the DU for network switching.
  • the source CU can send the context information of the DU of the IAB node to be switched to the target CU, so that the target CU can send the first configuration information (that is, the target CU configuration) to the source CU according to the context information of the DU.
  • Information for network switching to the DU so that the source CU sends the first configuration information to the IAB node, so that the IAB node executes the DU switching process according to the first configuration information, so that the to-be-switched IAB-DU slave
  • the source network is switched to the target network.
  • the at least one network interface 104 is also used to send second configuration information to the IAB node, where the second configuration information is used by the IAB node to perform the MT handover process.
  • bus system 105 is used to implement connection and communication between these components.
  • the bus system 105 also includes a power bus, a control bus, and a status signal bus.
  • various buses are marked as the bus system 105 in FIG. 10.
  • the user interface 103 may include a display, a keyboard, or a pointing device (for example, a mouse, a trackball, a touch panel, or a touch screen) and the like.
  • a pointing device for example, a mouse, a trackball, a touch panel, or a touch screen
  • the memory 102 in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electrically available Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be random access memory (RAM), which is used as an external cache.
  • RAM random access memory
  • static random access memory static random access memory
  • dynamic RAM dynamic random access memory
  • DRAM dynamic random access memory
  • synchronous dynamic random access memory synchronous DRAM, SDRAM
  • double data rate synchronous dynamic random access memory double data rate SDRAM, DDRSDRAM
  • enhanced synchronous dynamic random access memory enhanced SDRAM, ESDRAM
  • synchronous link dynamic random access memory synchronous link dynamic random access memory
  • direct rambus RAM direct rambus RAM
  • the memory 102 stores the following elements, executable modules or data structures, or a subset of them, or an extended set of them: an operating system 1021 and an application program 1022.
  • the operating system 1021 includes various system programs, such as a framework layer, a core library layer, a driver layer, etc., for implementing various basic services and processing hardware-based tasks.
  • the application program 1022 includes various application programs, such as a media player, a browser, etc., for implementing various application services.
  • the program for implementing the method of the embodiment of the present application may be included in the application program 1022.
  • the CU 100 may also include a program or instruction that is stored on the memory 102 and can run on the processor 101, and when the program or instruction is executed by the processor 101, the steps of the method provided in the embodiment of the present application are implemented.
  • the method disclosed in the foregoing embodiment of the present application may be applied to the processor 101 or implemented by the processor 101.
  • the processor 101 may be an integrated circuit chip with signal processing capabilities. In the implementation process, the steps of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 101 or instructions in the form of software.
  • the aforementioned processor 101 may be a general-purpose processor, a digital signal processor (digital signal processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (field programmable gate array, FPGA) or other Programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • Programmable logic devices discrete gates or transistor logic devices, discrete hardware components.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module may be located in a computer-readable storage medium that is mature in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the computer-readable storage medium is located in the memory 102, and the processor 101 reads the information in the memory 102, and completes the steps of the foregoing method in combination with its hardware.
  • a program or instruction is stored on the computer-readable storage medium, and when the program or instruction is executed by the processor 101, each step of the method embodiment as provided in the embodiment of the present application is implemented.
  • the embodiments described in the embodiments of the present application can be implemented by hardware, software, firmware, middleware, microcode, or a combination thereof.
  • the processing unit can be implemented in one or more ASICs, DSPs, digital signal processing devices (DSP devices, DSPD), programmable logic devices (programmable logic devices, PLDs), FPGAs, general-purpose processors, controllers, and microcomputers. Controllers, microprocessors, other electronic units for performing the functions described in this application, or a combination thereof.
  • the technology described in the embodiments of the present application can be implemented by modules (for example, procedures, functions, etc.) that execute the functions described in the embodiments of the present application.
  • the software codes can be stored in the memory and executed by the processor.
  • the memory can be implemented in the processor or external to the processor.
  • the embodiment of the present application also provides a readable storage medium, the readable storage medium stores a program or instruction, and when the program or instruction is executed by the processor 101 as shown in FIG. 10, each process of the foregoing method embodiment is implemented, and To achieve the same technical effect, in order to avoid repetition, I will not repeat them here.
  • the computer-readable storage medium such as ROM, RAM, magnetic disk or optical disk, etc.
  • FIG. 11 is a schematic diagram of the hardware structure of an IAB node that implements the embodiment of the present application.
  • the IAB node 110 includes an antenna 111, a radio frequency device 112, and a baseband device 113.
  • the antenna 111 is connected to the radio frequency device 112.
  • the radio frequency device 112 receives information through the antenna 111, and sends the received information to the baseband device 113 for processing.
  • the baseband device 113 processes the information to be sent and sends it to the radio frequency device 112, and the radio frequency device 112 processes the received information and sends it out via the antenna 111.
  • the foregoing frequency band processing device may be located in the baseband device 113, and the method executed by the IAB node in the foregoing embodiment may be implemented in the baseband device 113, and the baseband device 113 includes a processor 114 and a memory 115.
  • the baseband device 113 may include, for example, at least one baseband board, and multiple chips are arranged on the baseband board, as shown in FIG. The IAB node operation shown in the above method embodiment.
  • the baseband device 113 may further include a network interface 116 for exchanging information with the radio frequency device 112, and the interface is, for example, a common public radio interface (CPRI).
  • CPRI common public radio interface
  • the IAB node of the embodiment of the present application further includes: instructions or programs that are stored on the memory 115 and can run on the processor 114, and the processor 114 calls the instructions or programs in the memory 115 to execute the methods executed by the above-mentioned modules, And to achieve the same technical effect, in order to avoid repetition, so I will not repeat it here.
  • the embodiment of the present application also provides a readable storage medium with a program or instruction stored on the readable storage medium.
  • a program or instruction stored on the readable storage medium.
  • the processor is the processor in the terminal described in the foregoing embodiment.
  • the readable storage medium includes a computer readable storage medium, such as ROM, RAM, magnetic disk, or optical disk.
  • An embodiment of the present application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run a network-side device program or instruction to implement the above method embodiment
  • the chip includes a processor and a communication interface
  • the communication interface is coupled to the processor
  • the processor is used to run a network-side device program or instruction to implement the above method embodiment
  • the chip mentioned in the embodiment of the present application may also be called a system-level chip, a system-on-chip, a system-on-chip, or a system-on-chip, etc.
  • the method of the above embodiments can be implemented by means of software plus the necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is better. ⁇
  • the technical solution of this application essentially or the part that contributes to the existing technology can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, The optical disc) includes several instructions to make a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in the various embodiments of the present application.

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Abstract

本申请公开了一种网络切换方法、装置、通信设备及系统,该方法包括:向目标CU发送切换请求消息,该切换请求消息中包括第一目标信息,该第一目标信息为待切换的IAB节点的DU的上下文信息;接收目标CU发送的切换响应消息,该切换响应消息中包括第一配置信息,该第一配置信息为目标CU配置给DU的用于网络切换的信息;向IAB节点发送第一配置信息,该第一配置信息用于IAB节点执行DU的切换过程。

Description

网络切换方法、装置、通信设备及系统
相关申请的交叉引用
本申请主张在2020年05月29日在中国提交的中国专利申请号202010480061.8的优先权,其全部内容通过引用包含于此。
技术领域
本申请属于通信技术领域,具体涉及一种网络切换方法、装置、通信设备及系统。
背景技术
自回传(Integrated Access Backhaul,IAB)系统包括分布单元(Distributed Unit,DU)功能部分和移动终端(Mobile Termination,MT)功能部分。在一个自回传回路中,所有的IAB节点的DU都连接到一个集中单元(Centralized Unit,CU)节点,由该CU节点进行DU和MT的配置。
在异CU的IAB节点的切换过程中,待切换IAB节点从源CU控制的源父IAB节点切换到目标CU控制的目标父IAB节点,即在该切换过程中,待切换IAB节点的IAB-MT和IAB-DU都需要切换到与归属(donor)IAB节点相连,并由目标CU控制。
然而,目前相关技术中并没有待切换IAB-DU切换到目标CU的方案,因此无法实现IAB节点从源网络(即由源CU控制的网络)向目标网络(由目标CU控制的网络)的切换。
发明内容
本申请实施例的目的是提供一种网络切换方法、装置、通信设备及系统,能够解决相关技术中无法实现IAB节点从源网络向目标网络的切换的问题。
为了解决上述技术问题,本申请是这样实现的:
第一方面,提供了一种网络切换方法,应用于源CU,该网络切换方法包括:向目标CU发送切换请求消息,该切换请求消息中包括第一目标信息,该第一目标信息为待切换的IAB节点的DU的上下文信息;接收目标CU发送的切换响应消息,该切换响应消息中包括第一配置信息,该第一配置信息为目标CU配置给DU的用于网络切换的信息;向IAB节点发送第一配置信息,该第一配置信息用于IAB节点执行DU的切换过程。
第二方面,提供了一种网络切换方法,应用于目标CU,该网络切换方法包括:接收源CU发送的切换请求消息,该切换请求消息中包括第一目标信息,该第一目标信息为待切换的IAB节点的DU的上下文信息;根据切换请求消息,向源CU发送切换响应消息,该切换响应消息中包括第一配置信息,该第一配置信息为目标CU配置给DU的用于网络切换的信息。
第三方面,提供了一种网络切换方法,应用于IAB节点,该网络切换方法包括:接收源CU发送的第一配置信息,该第一配置信息为目标CU配置给IAB节点的DU 的用于网络切换的信息;根据第一配置信息,执行DU的切换过程。
第四方面,提供了一种网络切换装置,该网络切换装置包括:发送模块和接收模块。其中,发送模块,用于向目标CU发送切换请求消息,该切换请求消息中包括第一目标信息,该第一目标信息为待切换的IAB节点的DU的上下文信息。接收模块,用于接收目标CU发送的切换响应消息,该切换响应消息中包括第一配置信息,该第一配置信息为目标CU配置给DU的用于网络切换的信息。发送模块,还用于向IAB节点发送第一配置信息,该第一配置信息用于IAB节点执行DU的切换过程。
第五方面,提供了一种网络切换装置,该网络切换装置包括:接收模块和发送模块。其中,接收模块,用于接收源CU发送的切换请求消息,该切换请求消息中包括第一目标信息,该第一目标信息为待切换的IAB节点的DU的上下文信息。发送模块,用于根据切换请求消息,向源CU发送切换响应消息,该切换响应消息中包括第一配置信息,该第一配置信息为目标CU配置给DU的用于网络切换的信息。
第六方面,提供了一种网络切换装置,该网络切换装置包括:接收模块和执行模块。其中,接收模块,用于接收源CU发送的第一配置信息,该第一配置信息为目标CU配置给IAB节点的DU的用于网络切换的信息。执行模块,用于根据第一配置信息,执行DU的切换过程。
第七方面,提供了一种CU,该CU包括处理器、存储器及存储在所述存储器上并可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现如第一方面所述的网络切换方法的步骤。
第八方面,提供了一种CU,该CU包括处理器、存储器及存储在所述存储器上并可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现如第二方面所述的网络切换方法的步骤。
第九方面,提供了一种IAB节点,该IAB节点包括处理器、存储器及存储在所述存储器上并可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现如第三方面所述的网络切换方法的步骤。
第十方面,提供了一种通信系统,该通信系统包括如第四方面所述的网络切换装置、如第五方面所述的网络切换装置以及如第六方面所述的网络切换装置;或者,该通信系统包括如第七方面所述的CU、如第八方面所述的CU以及如第九方面所述的IAB节点。
第十一方面,提供了一种可读存储介质,所述可读存储介质上存储程序或指令,所述程序或指令被处理器执行时实现如第一方面所述的网络切换方法的步骤,或者实现如第二方面所述的网络切换方法的步骤,或者实现如第三方面所述的网络切换方法的步骤。
第十二方面,提供了一种芯片,所述芯片包括处理器和通信接口,所述通信接口和所述处理器耦合,所述处理器用于运行程序或指令,实现如第一方面所述的网络切换方法,或者实现如第二方面所述的网络切换方法,或者实现如第三方面所述的网络切换方法。
在本申请实施例中,由于源CU可以向目标CU发送待切换的IAB节点的DU的上下文信息,以使得目标CU可以根据该DU的上下文信息,向源CU发送第一配置 信息(即目标CU配置给DU的用于网络切换的信息),从而源CU将该第一配置信息发送至IAB节点,以使得IAB节点根据该第一配置信息执行DU的切换过程,因此可以实现待切换IAB-DU从源网络切换至目标网络。
附图说明
图1为本申请实施例提供的一种IAB系统的架构示意图;
图2为本申请实施例提供的一种无线通信系统的框图;
图3为本申请实施例提供的一种IAB系统的CU-DU结构示意图;
图4为本申请实施例提供的一种网络切换方法的示意图之一;
图5为本申请实施例提供的一种网络切换方法的示意图之二;
图6为本申请实施例提供的一种网络切换装置的结构示意图之一;
图7为本申请实施例提供的一种网络切换装置的结构示意图之二;
图8为本申请实施例提供的一种网络切换装置的结构示意图之三;
图9为本申请实施例提供的一种通信设备的结构示意图;
图10为本申请实施例提供的一种CU的硬件示意图;
图11为本申请实施例提供的一种IAB节点的硬件示意图。
具体实施方式
下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本申请一部分实施例,而不是全部的实施例。基于本申请中的实施例,本领域普通技术人员在没有作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。
本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象,而不用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换,以便本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施,且“第一”、“第二”所区别的对象通常为一类,并不限定对象的个数,例如第一对象可以是一个,也可以是多个。此外,说明书以及权利要求中“和/或”表示所连接对象的至少其中之一,字符“/”一般表示前后关联对象是一种“或”的关系。
下面对本申请实施例提供的网络切换方法、装置、通信设备及系统中涉及的一些概念和/或术语做一下解释说明。
IAB系统:图1示出了一个IAB系统的架构示意图。一个IAB节点包括DU功能部分和MT功能部分。依靠MT,一个接入点(即IAB node)可以找到一个上游接入点(parent IAB node),并跟上游接入点的DU建立无线连接,该无线连接被称为无线回传链路(backhaul link)。在一个IAB节点建立完整的回传链路后,该IAB节点打开其DU功能,DU会提供小区服务,即DU可以为用户设备(user equipment,UE)提供接入服务。一个自回传回路包含一个归属(donor)IAB节点(或者称为IAB donor),donor IAB节点有直接相连的有线传输网。IAB系统的引入是为了解决接入点密集部署时,有线传输网部署不到位的情况。即在没有有线传输网络时,接入点可以依赖无线回传。
UE也可以称作终端设备,UE可以是手机、平板电脑(Tablet Personal Computer)、膝上型电脑(Laptop Computer)或称为笔记本电脑、个人数字助理(Personal Digital Assistant, PDA)、掌上电脑、上网本、超级移动个人计算机(ultra-mobile personal computer,UMPC)、移动上网装置(Mobile Internet Device,MID)、可穿戴式设备(Wearable Device)或车载设备(VUE)、行人终端(PUE)等终端侧设备,可穿戴式设备包括:手环、耳机、眼镜等。需要说明的是,在本申请实施例并不限定UE的具体类型。
值得指出的是,本申请实施例所描述的技术不限于长期演进型(Long Term Evolution,LTE)/LTE的演进(LTE-Advanced,LTE-A)系统,还可用于其他无线通信系统,诸如码分多址(Code Division Multiple Access,CDMA)、时分多址(Time Division Multiple Access,TDMA)、频分多址(Frequency Division Multiple Access,FDMA)、正交频分多址(Orthogonal Frequency Division Multiple Access,OFDMA)、单载波频分多址(Single-carrier Frequency-Division Multiple Access,SC-FDMA)和其他系统。本申请实施例中的术语“系统”和“网络”常被可互换地使用,所描述的技术既可用于以上提及的系统和无线电技术,也可用于其他系统和无线电技术。然而,以下描述出于示例目的描述了新空口(New Radio,NR)系统,并且在以下大部分描述中使用NR术语,尽管这些技术也可应用于NR系统应用以外的应用,如第6代(6th Generation,6G)通信系统。
图2示出本申请实施例可应用的一种无线通信系统的框图。无线通信系统包括至少一个IAB节点01、源CU 02和目标CU 03。
其中,至少一个IAB节点01可以与源CU 02建立连接,源CU 02可以与目标CU 03建立连接。
需要说明的是,至少一个IAB节点01与源CU 02之间、源CU 02与目标CU 03之间均可以为无线连接,图2中是以实线示意至少一个IAB节点01与源CU 02之间、源CU 02与目标CU 03之间的连接关系的。
源CU和目标CU之间可以进行信息交互(例如本申请实施例中的切换请求消息),以控制IAB节点进行网络切换(例如从源CU控制的网络切换至目标CU控制的网络)。
图3示出了一个IAB系统的CU-DU的结构示意图。在一个自回传回路中,所有的IAB节点的DU都连接到一个CU节点,由这一个节点通过F1层应用协议(F1-Application Protocol,F1-AP)信令进行对DU的配置。CU通过RRC信令进行对MT的配置。donor IAB节点没有MT功能部分。
下面结合附图,通过具体的实施例及其应用场景对本申请实施例提供的网络切换方法进行详细地说明。
基于上述通信系统,本申请实施例提供一种网络切换方法,如图4所示,该网络切换方法可以包括下述的步骤201至步骤207。
步骤201、源CU向目标CU发送切换请求消息。
本申请实施例中,上述切换请求消息(migration request)中包括第一目标信息,该第一目标信息为待切换的IAB节点的DU的上下文(context)信息。
可选地,本申请实施例中,上述第一目标信息包括以下至少一项:DU的系统信息、DU的同步信号块(Synchronization Signal Block,SSB)信息、DU的物理小区标识(Physical Cell Identifier,PCI)信息/E-UTRAN小区全局标识(E-UTRAN Cell Global Identity,ECGI)信息、DU的跟踪区编码(Tracking Area Code,TAC)信息、DU的基于RANAC(即无线接入网(Radio Access Network,RAN)的通知区号(Area Code,AC))信息、DU的上 下行(即direction)信息、DU的性能信息、DU的上下行负荷、DU与IAB节点的MT之间的功率分配信息、DU对应的保护(guard)符号(desired/provided guard symbol)信息,以及DU对应的回传链路(Backhaul/access link)的干扰信息。
可选地,本申请实施例中,上述DU的系统信息为以下任一项:主系统信息块(Master Information Block,MIB)信息、目标系统信息块(System Information Block,SIB)信息(例如SIB1信息)和其他SIB信息,该其他SIB信息为除目标SIB信息之外的SIB信息。
可选地,本申请实施例中,上述DU的系统信息中包括以下至少一项:DU对应的小区的公共陆地移动网络(Public Land Mobile Network,PLMN)信息、DU对应的带宽部分(Bandwidth Part,BWP)信息、DU对应的载波信息、DU对应的切片信息、DU对应的通用随机接入信息、DU对应的IAB专属(特有的)随机接入信息、DU对应的寻呼配置信息、DU对应的邻小区信息、DU对应的小区选择配置信息、DU对应的广播消息的发送配置信息,以及DU对应的无线资源的配置信息。
需要说明的是,上述DU的系统信息为DU的正在生效的系统信息,上述SSB信息为DU正在广播的SSB配置信息,上述通用随机接入信息为IAB节点和UE均可以使用的信息,上述DU对应的小区可以理解为DU提供的小区。
可选地,本申请实施例中,DU对应的广播消息的发送配置信息可以包括以下至少一项:周期、正在广播的消息列表、基于切换请求消息的消息列表和系统消息请求配置等。
可选地,本申请实施例中,上述SSB信息可以包括以下至少一项:时间偏移量、周期、SSB的个数(即L值)、SSB发送功率和占用的频率等。
可选地,本申请实施例中,上述DU的性能信息(Capability information)包括以下至少一项:DU的调度/发送/接收的处理时延、DU的射频信息、DU支持的频带和载波、DU的功率调整的动态范围、DU是否支持双连接的指示信息、DU是否支持(EUTRA-NR,EN)-DC的指示信息、DU支持的复用模式、DU对应的天线配置支持的子载波间隔(Sub-Carrier Spacing,SCS)信息、DU支持的调度模式、DU的非连续接收(Discontinuous Reception,DRX)功能信息、DU对应的抢先(pre-emptive)缓冲区状态报告(Buffer Status Report,BSR)功能信息、DU的下行单跳流控(DL hop by hop flow control)功能信息、DU对应的无线资源控制(Radio Resource Control,RRC)非激活(inactive)态功能信息、DU对应的RRC空闲(idle)态功能信息、DU支持的业务种类信息,以及DU支持多输入多输出(Multiple Input Multiple Output,MIMO)的相关能力信息。
可选地,本申请实施例中,上述射频信息可以包括以下至少一项:最大发送功率或最小发送功率。
可选地,本申请实施例中,上述复用模式可以包括以下至少一项:跨跳(across-hop)时分复用(Time Division Multiplexing,TDM)、频分复用(Frequency Division Multiplexing,FDM)、空分复用(Space Division Multiplexing,SDM)和全双工(full duplexing)。
可选地,本申请实施例中,上述天线配置可以包括以下至少一项:IAB-DU与IAB-MT分别使用的射频通道/天线、IAB-DU与IAB-MT共用的射频通道/天线。
可选地,本申请实施例中,上述调度模式可以包括以下至少一项:类型(Type)A和Type B。
可选地,本申请实施例中,上述切换请求消息中还包括第三目标信息,第三目标信息 为IAB节点的相关上下文信息。
可选地,本申请实施例中,上述第三目标信息包括以下至少一项:IAB节点对应的BAP实体(entity)的信息、IAB节点到父IAB节点或子IAB节点的回传(backhaul,BH)无线链路控制(Radio Link Control,RLC)信道(channel)的配置信息、IAB节点的路由(route/path)配置信息、IAB节点的局部负荷分流配置信息、IAB节点的承载(bearer)映射配置信息、一个路由(route)或BH RLC信道的拥塞状态信息、IAB节点对NR小区或LTE小区的测量配置信息,以及IAB节点对应的网际互连协议(Internet Protocol,IP)地址信息。
可选地,本申请实施例中,上述BAP实体的信息可以包括以下至少一项:BAP地址信息、父/子IAB节点的BAP地址信息。
可选地,本申请实施例中,上述切换请求消息中还包括以下至少一项:IAB节点的MT的能力信息(即IAB-MT的特有能力信息)和MT的类型信息,该能力信息用于指示MT支持的UE功能,该MT的类型信息用于指示MT的类型。
可选地,本申请实施例中,上述能力信息具体可以为IAB-MT的最小功能集合指示,该最小功能集合指示用于指示IAB-MT支持的基本UE功能。
可选地,本申请实施例中,上述IP地址信息包括以下至少一项:IAB-DU的IP地址、IAB-MT的IP地址。
可选地,本申请实施例中,上述切换请求消息中还包括第二目标信息,第二目标信息为IAB节点的MT的上下文信息。
可选地,本申请实施例中,上述切换响应消息中还包括第二配置信息,第二配置信息为目标CU配置给MT的用于网络切换的信息。
可选地,本申请实施例中,上述第二配置信息包括以下至少一项:信令无线承载(Signaling Radio Bearer,SRB)信息、数据无线承载(Data Radio Bearer,DRB)信息、服务小区信息、功率控制信息、测量汇报信息、DU的Uu接口的小区配置信息、时频资源配置信息和路由信息。
可选地,本申请实施例中,上述切换响应消息中还包括以下至少一项:目标CU配置给IAB节点的回传适配协议(Backhaul Adaptation Protocol,BAP)实体配置信息和目标路由配置信息,目标路由配置信息用于指示IAB节点在目标CU控制的网络中的转发数据路由关系。
步骤202、目标CU接收源CU发送的切换请求消息。
步骤203、目标CU根据切换请求消息,向源CU发送切换响应消息。
本申请实施例中,上述切换响应消息中包括第一配置信息,该第一配置信息为目标CU配置给DU的用于网络切换的信息。
本申请实施例中,目标CU可以根据接收到的IAB节点的DU的上下文信息,为DU在目标网络(例如包含目标CU-控制面板(Control Plane,CP)、目标CU-用户面板(User Plane,UP)和目标父IAB-DU节点)中完成预配置。
可选地,本申请实施例中,目标CU可以为DU在目标网络中与待切换IAB-DU相连的F1通道建立相关的预配置,以为DU进行网络切换的配置。
可选地,本申请实施例中,目标CU在完成对DU的配置后,可以生成关于IAB节点 的切换响应消息,并将该切换响应消息发给源CU。
本申请实施例中,目标CU可以决定是否更改待切换IAB-DU节点的配置,并将待切换IAB-DU节点的配置信息打包到切换响应消息(Migration Request Response)中。
步骤204、源CU接收目标CU发送的切换响应消息。
步骤205、源CU向IAB节点发送第一配置信息。
本申请实施例中,上述第一配置信息用于IAB节点执行DU的切换过程。
步骤206、IAB节点接收源CU发送的第一配置信息。
步骤207、IAB节点根据第一配置信息,执行DU的切换过程。
本申请实施例中,IAB节点中的DU(可以称为IAB-DU)可以根据接收到的第一配置信息执行网络的切换过程(即从源CU控制的网络切换至目标CU控制的网络的过程),并在完成网络切换之后,向目标CU发送重配完成消息。
本申请实施例提供一种网络切换方法,由于源CU可以向目标CU发送待切换的IAB节点的DU的上下文信息,以使得目标CU可以根据该DU的上下文信息,向源CU发送第一配置信息(即目标CU配置给DU的用于网络切换的信息),从而源CU将该第一配置信息发送至IAB节点,以使得IAB节点根据该第一配置信息执行DU的切换过程,因此可以实现待切换IAB-DU从源网络切换至目标网络。
可选地,本申请实施例中,结合图4,如图5所示,在上述步骤204之后,本申请实施例提供的网络切换方法还包括下述的步骤301至步骤303。
步骤301、源CU向IAB节点发送第二配置信息。
本申请实施例中,上述第二配置信息为目标CU配置给MT的用于网络切换的信息,该第二配置信息用于IAB节点执行MT的切换过程。
步骤302、IAB节点接收源CU发送的第二配置信息。
步骤303、IAB节点根据第二配置信息,执行MT的切换过程。
需要说明的是,针对上述步骤301至步骤303与上述步骤205至步骤207的执行顺序,本申请实施例不作限制。一种实现方式中(图5中示意的方式),可以先执行上述步骤205至步骤207,再执行上述步骤301至步骤303;或者,另一种实现方式中,可以先执行上述步骤301至步骤303,再执行上述步骤205至步骤207;或者,又一种实现方式中,可以同时执行上述步骤205至步骤207与上述步骤301至步骤303。
本申请实施例中,源CU可以向目标CU发送待切换的IAB节点的MT的上下文信息,以使得目标CU可以根据该MT的上下文信息,向源CU发送第二配置信息(即目标CU配置给MT的用于网络切换的信息),从而源CU将该第二配置信息发送至IAB节点,以使得IAB节点根据该第二配置信息执行MT的切换过程,因此可以实现待切换IAB-MT从源网络切换至目标网络。
下面通过具体的实施方式(即下述的步骤1至步骤11),对本申请实施例提供的待切换IAB节点从源CU网络切换到目标CU网络的切换流程进行描述。
步骤1、源CU向目标CU发送待切换IAB节点的切换请求。在切换请求消息中,可以包含该IAB节点的IAB-MT上下文(CONTEXT)信息,以及包含该IAB节点的IAB-DU上下文(CONTEXT)信息。
步骤2、目标CU根据收到的IAB节点的IAB-MT上下文信息,为该IAB-MT在目标 网络(包含目标CU-CP、目标CU-UP、目标父IAB节点)中完成预配置,例如包括无线承载(radio bearer,例如SRB和DRB)信息的配置、BAP实体(BAP entity)的配置。
步骤3、目标CU根据接收到的IAB节点的IAB-DU上下文信息,为该IAB-DU在目标网络(包含目标CU-CP、目标CU-UP、目标父IAB-DU节点)中完成预配置,例如包括目标网络中与待切换IAB-DU相连的F1通道建立相关的预配置。
步骤4、目标CU针对待切换IAB节点的IAB-MT和IAB-DU的在目标网络的路由预配置,该路由预配置为待切换IAB节点建立在目标网络的转发数据路由关系。
步骤5、在完成上述步骤2、3和4之后,目标CU生成关于待切换IAB节点的切换响应消息,并将该切换响应消息发给源CU。
其中,上述切换响应消息中包含目标CU对待切换IAB节点的IAB-MT和IAB-DU预配置信息。目标CU为待切换IAB-MT提供的预配置信息除包含传统的配置信息(例如SRB、DRB、服务小区,功率控制、测量汇报等)信息之外,还可以包含路由BAP实体配置信息、路由配置信息。目标CU为为待切换IAB-MT提供预配置信息包括IAB-DU的Uu接口的小区配置信息、可以使用的时频资源配置信息和路由信息等。
步骤6、源CU在收到目标CU对待切换IAB节点的IAB-DU预配置信息后,将这些预配置信息发给待切换IAB-DU,待切换IAB-DU根据接收到的预配置消息此完成预配置。
步骤7、源CU在成功发送待切换IAB节点的IAB-DU预配置信息后,将接收到目标CU对待切换IAB节点的IAB-MT预配置信息发给该IAB-MT,该IAB-MT根据接收到的预配置消息完成预配置。
步骤8、待切换IAB节点的IAB-MT根据预配置发起随机接入程序,建立与目标父IAB节点的无线连接。
步骤9、待切换IAB节点的IAB-MT向目标CU发送重配完成消息。
步骤10、待切换IAB节点的IAB-DU向目标CU发送重配完成消息。
步骤11、目标CU节点通知源IAB节点切换成功完成,源IAB节点启动关于待切换IAB节点的上下文删除信息的信令流程。
本申请实施例中,源CU可以向目标CU发送待切换的IAB节点的DU的上下文信息和MT的上下文信息,以使得目标CU可以根据该DU的上下文信息和MT的上下文信息,向源CU发送DU的配置信息(即第一配置信息)和MT的配置信息(即第二配置信息),从而源CU将该DU的配置信息和MT的配置信息发送至IAB节点,以使得IAB节点根据该DU的配置信息执行DU的切换过程,并根据MT的配置信息执行MT的切换过程,以实现待切换IAB节点(即IAB-DU和IAB-MT)从源网络切换至目标网络。
图6示出了本申请实施例中涉及的网络切换装置的一种可能的结构示意图。如图6所示,本申请实施例提供的网络切换装置60可以包括:发送模块61和接收模块62。
其中,发送模块61,用于向目标CU发送切换请求消息,该切换请求消息中包括第一目标信息,该第一目标信息为待切换的IAB节点的DU的上下文信息。接收模块62,用于接收目标CU发送的切换响应消息,该切换响应消息中包括第一配置信息,该第一配置信息为目标CU配置给DU的用于网络切换的信息。发送模块61,还用于向IAB节点发送第一配置信息,该第一配置信息用于IAB节点执行DU的切换过程。
在一种可能的实现方式中,上述切换请求消息中还包括第二目标信息,该第二目标信 息为IAB节点的MT的上下文信息;上述切换响应消息中还包括第二配置信息,该第二配置信息为目标CU配置给MT的用于网络切换的信息。上述发送模块61,还用于向IAB节点发送第二配置信息,该第二配置信息用于IAB节点执行MT的切换过程。
在一种可能的实现方式中,上述第二配置信息包括以下至少一项:SRB信息、DRB信息、服务小区信息、功率控制信息、测量汇报信息、DU的Uu接口的小区配置信息、时频资源配置信息和路由信息。
在一种可能的实现方式中,上述切换响应消息中还包括以下至少一项:目标CU配置给IAB节点的BAP实体配置信息和目标路由配置信息,该目标路由配置信息用于指示IAB节点在目标CU控制的网络中的转发数据路由关系。
在一种可能的实现方式中,上述第一目标信息包括以下至少一项:DU的系统信息、DU的SSB信息、DU的PCI信息、DU的TAC信息、DU的基于RAN的RANAC信息、DU的上下行信息、DU的性能信息、DU的上下行负荷、DU与IAB节点的MT之间的功率分配信息、DU对应的保护符号信息,以及DU对应的回传链路的干扰信息。
在一种可能的实现方式中,上述DU的系统信息为以下任一项:MIB信息、目标SIB信息和其他SIB信息,该其他SIB信息为除目标SIB信息之外的SIB信息。上述DU的系统信息中包括以下至少一项:DU对应的小区的PLMN信息、DU对应的BWP信息、DU对应的载波信息、DU对应的切片信息、DU对应的通用随机接入信息、DU对应的IAB专属随机接入信息、DU对应的寻呼配置信息、DU对应的邻小区信息、DU对应的小区选择配置信息、DU对应的广播消息的发送配置信息,以及DU对应的无线资源的配置信息。
在一种可能的实现方式中,上述DU的性能信息包括以下至少一项:DU的调度/发送/接收的处理时延、DU的射频信息、DU支持的频带和载波、DU的功率调整的动态范围、DU是否支持双连接的指示信息、DU是否支持EN-DC的指示信息、DU支持的复用模式、DU对应的天线配置支持的SCS信息、DU支持的调度模式、DU的DRX功能信息、DU对应的抢先BSR功能信息、DU的下行单跳流控功能信息、DU对应的RRC非激活态功能信息、DU对应的RRC空闲态功能信息、DU支持的业务种类信息,以及DU支持MIMO的相关能力信息。
在一种可能的实现方式中,上述切换请求消息中还包括第三目标信息,该第三目标信息为IAB节点的相关上下文信息。上述第三目标信息包括以下至少一项:IAB节点对应的BAP实体的信息、IAB节点到父IAB节点或子IAB节点的BH RLC信道的配置信息、IAB节点的路由配置信息、IAB节点的局部负荷分流配置信息、IAB节点的承载映射配置信息、一个路由或BH RLC信道的拥塞状态信息、IAB节点对NR小区或LTE小区的测量配置信息,以及IAB节点对应的IP地址信息。
在一种可能的实现方式中,上述切换请求消息中还包括以下至少一项:IAB节点的MT的能力信息和MT的类型信息,该能力信息用于指示MT支持的用户设备UE功能。
本申请实施例提供的网络切换装置能够实现上述方法实施例中源CU实现的各个过程,为避免重复,具体描述此处不再赘述。
本申请实施例提供一种网络切换装置,由于源CU可以向目标CU发送待切换的IAB节点的DU的上下文信息,以使得目标CU可以根据该DU的上下文信息,向源CU发送第一配置信息(即目标CU配置给DU的用于网络切换的信息),从而源CU将该第一配 置信息发送至IAB节点,以使得IAB节点根据该第一配置信息执行DU的切换过程,因此可以实现待切换IAB-DU从源网络切换至目标网络。
本申请实施例中的网络切换装置可以是装置,也可以是源CU中的部件、集成电路、或芯片。
图7示出了本申请实施例中涉及的网络切换装置的一种可能的结构示意图。如图7所示,本申请实施例提供的网络切换装置70可以包括:接收模块71和发送模块72。
其中,接收模块71,用于接收源CU发送的切换请求消息,该切换请求消息中包括第一目标信息,该第一目标信息为待切换的IAB节点的DU的上下文信息。发送模块72,用于根据切换请求消息,向源CU发送切换响应消息,该切换响应消息中包括第一配置信息,该第一配置信息为目标CU配置给DU的用于网络切换的信息。
在一种可能的实现方式中,上述切换请求消息中还包括第二目标信息,该第二目标信息为IAB节点的MT的上下文信息。上述切换响应消息中还包括第二配置信息,该第二配置信息为目标CU配置给MT的用于网络切换的信息。
在一种可能的实现方式中,上述第二配置信息包括以下至少一项:SRB信息、DRB信息、服务小区信息、功率控制信息、测量汇报信息、DU的Uu接口的小区配置信息、时频资源配置信息和路由信息。
在一种可能的实现方式中,上述切换响应消息中还包括以下至少一项:目标CU配置给IAB节点的BAP实体配置信息和目标路由配置信息,该目标路由配置信息用于指示IAB节点在目标CU控制的网络中的转发数据路由关系。
在一种可能的实现方式中,上述第一目标信息包括以下至少一项:DU的系统信息、DU的SSB信息、DU的PCI信息、DU的TAC信息、DU的基于RAN的RANAC信息、DU的上下行信息、DU的性能信息、DU的上下行负荷、DU与IAB节点的MT之间的功率分配信息、DU对应的保护符号信息,以及DU对应的回传链路的干扰信息。
在一种可能的实现方式中,上述DU的系统信息为以下任一项:MIB信息、目标SIB信息和其他SIB信息,该其他SIB信息为除目标SIB信息之外的SIB信息。上述DU的系统信息中包括以下至少一项:DU对应的小区的PLMN信息、DU对应的BWP信息、DU对应的载波信息、DU对应的切片信息、DU对应的通用随机接入信息、DU对应的IAB专属随机接入信息、DU对应的寻呼配置信息、DU对应的邻小区信息、DU对应的小区选择配置信息、DU对应的广播消息的发送配置信息,以及DU对应的无线资源的配置信息。
在一种可能的实现方式中,上述DU的性能信息包括以下至少一项:DU的调度/发送/接收的处理时延、DU的射频信息、DU支持的频带和载波、DU的功率调整的动态范围、DU是否支持双连接的指示信息、DU是否支持EN-DC的指示信息、DU支持的复用模式、DU对应的天线配置支持的SCS信息、DU支持的调度模式、DU的DRX功能信息、DU对应的抢先BSR功能信息、DU的下行单跳流控功能信息、DU对应的RRC非激活态功能信息、DU对应的RRC空闲态功能信息、DU支持的业务种类信息,以及DU支持MIMO的相关能力信息。
在一种可能的实现方式中,上述切换请求消息中还包括第三目标信息,该第三目标信息为IAB节点的相关上下文信息。上述第三目标信息包括以下至少一项:IAB节点对应的BAP实体的信息、IAB节点到父IAB节点或子IAB节点的BH RLC信道的配置信息、IAB 节点的路由配置信息、IAB节点的局部负荷分流配置信息、IAB节点的承载映射配置信息、一个路由或BH RLC信道的拥塞状态信息、IAB节点对NR小区或LTE小区的测量配置信息,以及IAB节点对应的IP地址信息。
在一种可能的实现方式中,上述切换请求消息中还包括以下至少一项:IAB节点的MT的能力信息和MT的类型信息,该能力信息用于指示MT支持的用户设备UE功能。
本申请实施例提供的网络切换装置能够实现上述方法实施例中目标CU实现的各个过程,为避免重复,具体描述此处不再赘述。
本申请实施例提供一种网络切换装置,由于目标CU可以根据源CU发送的待切换的IAB节点的DU的上下文信息,向源CU发送第一配置信息(即目标CU配置给DU的用于网络切换的信息),从而源CU将该第一配置信息发送至IAB节点,以使得IAB节点根据该第一配置信息执行DU的切换过程,因此可以实现待切换IAB-DU从源网络切换至目标网络。
本申请实施例中的网络切换装置可以是装置,也可以是目标CU中的部件、集成电路、或芯片。
图8示出了本申请实施例中涉及的网络切换装置的一种可能的结构示意图。如图8所示,本申请实施例提供的网络切换装置80可以包括:接收模块81和执行模块82。
其中,接收模块81,用于接收源CU发送的第一配置信息,该第一配置信息为目标CU配置给IAB节点的DU的用于网络切换的信息。执行模块82,用于根据第一配置信息,执行DU的切换过程。
在一种可能的实现方式中,上述接收模块81,还用于接收源CU发送的第二配置信息,该第二配置信息为目标CU配置给MT的用于网络切换的信息。上述执行模块82,还用于根据第二配置信息,执行MT的切换过程。
在一种可能的实现方式中,上述第二配置信息包括以下至少一项:SRB信息、DRB信息、服务小区信息、功率控制信息、测量汇报信息、DU的Uu接口的小区配置信息、时频资源配置信息和路由信息。
本申请实施例提供的网络切换装置能够实现上述方法实施例中IAB节点实现的各个过程,为避免重复,具体描述此处不再赘述。
本申请实施例提供一种网络切换装置,由于IAB节点可以根据源CU发送的第一配置信息(即目标CU配置给DU的用于网络切换的信息),执行DU的切换过程,因此可以实现待切换IAB-DU从源网络切换至目标网络。
本申请实施例中的网络切换装置可以是装置,也可以是IAB节点中的部件、集成电路、或芯片。
可选地,如图9所示,本申请实施例还提供一种通信设备90,包括处理器91,存储器92,存储在存储器92上并可在所述处理器91上运行的程序或指令,例如,该通信设备90为源CU时,该程序或指令被处理器91执行时实现上述方法实施例中源CU实现的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。该通信设备90为目标CU时,该程序或指令被处理器91执行时实现上述方法实施例中目标CU实现的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。该通信设备90为IAB节点时,该程序或指令被处理器91执行时实现上述方法实施例中IAB节点实现的各个过程,且能 达到相同的技术效果,为避免重复,这里不再赘述。
本申请实施例还提供一种CU,图10为实现本申请实施例的一种CU的硬件结构示意图。
需要说明的是,图10所示的CU的硬件结构可以为上述实施例中的源CU的硬件结构或目标CU的硬件结构。
CU 100包括但不限于:至少一个处理器101、存储器102、用户接口103和至少一个网络接口104。CU 100中的各个组件通过总线系统105耦合在一起。
需要说明的是,本领域技术人员可以理解,图10中示出的CU 100的结构并不构成对CU的限定,CU可以包括比图10所示更多或更少的部件,或者组合某些部件,或者不同的部件布置。
本申请实施例中,至少一个网络接口104,用于向目标CU发送切换请求消息,该切换请求消息中包括第一目标信息,该第一目标信息为待切换的IAB节点的DU的上下文信息;接收目标CU发送的切换响应消息,该切换响应消息中包括第一配置信息,该第一配置信息为目标CU配置给DU的用于网络切换的信息;向IAB节点发送第一配置信息,该第一配置信息用于IAB节点执行DU的切换过程。
或者,至少一个网络接口104,用于接收源CU发送的切换请求消息,该切换请求消息中包括第一目标信息,该第一目标信息为待切换的IAB节点的DU的上下文信息;根据切换请求消息,向源CU发送切换响应消息,该切换响应消息中包括第一配置信息,该第一配置信息为目标CU配置给DU的用于网络切换的信息。
本申请实施例中,由于源CU可以向目标CU发送待切换的IAB节点的DU的上下文信息,以使得目标CU可以根据该DU的上下文信息,向源CU发送第一配置信息(即目标CU配置给DU的用于网络切换的信息),从而源CU将该第一配置信息发送至IAB节点,以使得IAB节点根据该第一配置信息执行DU的切换过程,因此可以实现待切换IAB-DU从源网络切换至目标网络。
可选地,至少一个网络接口104,还用于向IAB节点发送第二配置信息,该第二配置信息用于IAB节点执行MT的切换过程。
可以理解的是,总线系统105用于实现这些组件之间的连接通信。总线系统105除包括数据总线之外,还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见,在图10中将各种总线都标为总线系统105。
其中,用户接口103可以包括显示器、键盘或者点击设备(例如,鼠标,轨迹球、触感板或者触摸屏)等。
可以理解的是,本申请实施例中的存储器102可以是易失性存储器或非易失性存储器,或可包括易失性和非易失性存储器两者。其中,非易失性存储器可以是只读存储器(read-only memory,ROM)、可编程只读存储器(programmable ROM,PROM)、可擦除可编程只读存储器(erasable PROM,EPROM)、电可擦除可编程只读存储器(electrically EPROM,EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory,RAM),其用作外部高速缓存。通过示例性但不是限制性说明,许多形式的RAM可用,例如静态随机存取存储器(static RAM,SRAM)、动态随机存取存储器(dynamic RAM,DRAM)、同步动态随机存取存储器(synchronous DRAM,SDRAM)、双倍数据速率同 步动态随机存取存储器(double data rate SDRAM,DDRSDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM,ESDRAM)、同步连接动态随机存取存储器(synch link DRAM,SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM,DRRAM)。本申请实施例描述的存储器102旨在包括但不限于这些和任意其它适合类型的存储器。
在一些实施方式中,存储器102存储了如下的元素,可执行模块或者数据结构,或者他们的子集,或者他们的扩展集:操作系统1021和应用程序1022。
其中,操作系统1021,包含各种系统程序,例如框架层、核心库层、驱动层等,用于实现各种基础业务以及处理基于硬件的任务。应用程序1022,包含各种应用程序,例如媒体播放器、浏览器等,用于实现各种应用业务。实现本申请实施例方法的程序可以包含在应用程序1022中。
本申请实施例中,CU 100还可以包括存储在存储器102上并可在处理器101上运行的程序或指令,该程序或指令被处理器101执行时实现本申请实施例提供的方法的步骤。
上述本申请实施例揭示的方法可以应用于处理器101中,或者由处理器101实现。处理器101可能是一种集成电路芯片,具有信号的处理能力。在实现过程中,上述方法的各步骤可以通过处理器101中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器101可以是通用处理器、数字信号处理器(digital signal processor,DSP)、专用集成电路(application specific integrated circuit,ASIC)、现成可编程门阵列(field programmable gate array,FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成,或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器,闪存、只读存储器,可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的计算机可读存储介质中。该计算机可读存储介质位于存储器102,处理器101读取存储器102中的信息,结合其硬件完成上述方法的步骤。具体地,该计算机可读存储介质上存储有程序或指令,程序或指令被处理器101执行时实现如本申请实施例提供的方法实施例的各步骤。
可以理解的是,本申请实施例描述的这些实施例可以用硬件、软件、固件、中间件、微码或其组合来实现。对于硬件实现,处理单元可以实现在一个或多个ASIC、DSP、数字信号处理设备(DSP device,DSPD)、可编程逻辑设备(programmable logic device,PLD)、FPGA、通用处理器、控制器、微控制器、微处理器、用于执行本申请所述功能的其它电子单元或其组合中。
对于软件实现,可通过执行本申请实施例所述功能的模块(例如过程、函数等)来实现本申请实施例所述的技术。软件代码可存储在存储器中并通过处理器执行。存储器可以在处理器中或在处理器外部实现。
本申请实施例还提供一种可读存储介质,该可读存储介质上存储程序或指令,该程序或指令被如图10所示的处理器101执行时实现上述方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。其中,所述的计算机可读存储介质,如ROM、RAM、磁碟或者光盘等。
本申请实施例还提供了一种IAB节点,图11为实现本申请实施例的一种IAB节点的 硬件结构示意图。
如图11所示,该IAB节点110包括:天线111、射频装置112、基带装置113。天线111与射频装置112连接。在上行方向上,射频装置112通过天线111接收信息,将接收的信息发送给基带装置113进行处理。在下行方向上,基带装置113对要发送的信息进行处理,并发送给射频装置112,射频装置112对收到的信息进行处理后经过天线111发送出去。
上述频带处理装置可以位于基带装置113中,以上实施例中IAB节点执行的方法可以在基带装置113中实现,该基带装置113包括处理器114和存储器115。
基带装置113例如可以包括至少一个基带板,该基带板上设置有多个芯片,如图11所示,其中一个芯片例如为处理器114,与存储器115连接,以调用存储器115中的程序,执行以上方法实施例中所示的IAB节点操作。
该基带装置113还可以包括网络接口116,用于与射频装置112交互信息,该接口例如为通用公共无线接口(common public radio interface,CPRI)。
具体地,本申请实施例的IAB节点还包括:存储在存储器115上并可在处理器114上运行的指令或程序,处理器114调用存储器115中的指令或程序执行上述各模块执行的方法,并达到相同的技术效果,为避免重复,故不在此赘述。
本申请实施例还提供一种可读存储介质,该可读存储介质上存储有程序或指令,该程序或指令被处理器执行时实现上述方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。
其中,所述处理器为上述实施例中所述的终端中的处理器。所述可读存储介质,包括计算机可读存储介质,如ROM、RAM、磁碟或者光盘等。
本申请实施例另提供了一种芯片,所述芯片包括处理器和通信接口,所述通信接口和所述处理器耦合,所述处理器用于运行网络侧设备程序或指令,实现上述方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。
应理解,本申请实施例提到的芯片还可以称为系统级芯片,系统芯片,芯片系统或片上系统芯片等。
需要说明的是,在本文中,术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下,由语句“包括一个……”限定的要素,并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。此外,需要指出的是,本申请实施方式中的方法和装置的范围不限按示出或讨论的顺序来执行功能,还可包括根据所涉及的功能按基本同时的方式或按相反的顺序来执行功能,例如,可以按不同于所描述的次序来执行所描述的方法,并且还可以添加、省去、或组合各种步骤。另外,参照某些示例所描述的特征可在其他示例中被组合。
通过以上的实施方式的描述,本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现,当然也可以通过硬件,但很多情况下前者是更佳的实施方式。基于这样的理解,本申请的技术方案本质上或者说对现有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(可以是手机,计算机,服务器,空调器,或者网络设备等)执行本申请各个实施例所述的方法。
上面结合附图对本申请的实施例进行了描述,但是本申请并不局限于上述的具体实施方式,上述的具体实施方式仅仅是示意性的,而不是限制性的,本领域的普通技术人员在本申请的启示下,在不脱离本申请宗旨和权利要求所保护的范围情况下,还可做出很多形式,均属于本申请的保护之内。

Claims (50)

  1. 一种网络切换方法,所述方法包括:
    源集中单元CU向目标CU发送切换请求消息,所述切换请求消息中包括第一目标信息,所述第一目标信息为待切换的自回传IAB节点的分布单元DU的上下文信息;
    所述源CU接收所述目标CU发送的切换响应消息,所述切换响应消息中包括第一配置信息,所述第一配置信息为所述目标CU配置给所述DU的用于网络切换的信息;
    所述源CU向所述IAB节点发送所述第一配置信息,所述第一配置信息用于所述IAB节点执行所述DU的切换过程。
  2. 根据权利要求1所述的方法,其中,所述切换请求消息中还包括第二目标信息,所述第二目标信息为所述IAB节点的移动终端MT的上下文信息;所述切换响应消息中还包括第二配置信息,所述第二配置信息为所述目标CU配置给所述MT的用于网络切换的信息;
    所述方法还包括:
    所述源CU向所述IAB节点发送所述第二配置信息,所述第二配置信息用于所述IAB节点执行所述MT的切换过程。
  3. 根据权利要求2所述的方法,其中,所述第二配置信息包括以下至少一项:信令无线承载SRB信息、数据无线承载DRB信息、服务小区信息、功率控制信息、测量汇报信息、所述DU的Uu接口的小区配置信息、时频资源配置信息和路由信息。
  4. 根据权利要求1至3中任一项所述的方法,其中,所述切换响应消息中还包括以下至少一项:所述目标CU配置给所述IAB节点的回传适配协议BAP实体配置信息和目标路由配置信息,所述目标路由配置信息用于指示所述IAB节点在所述目标CU控制的网络中的转发数据路由关系。
  5. 根据权利要求1所述的方法,其中,所述第一目标信息包括以下至少一项:所述DU的系统信息、所述DU的同步信号块SSB信息、所述DU的物理小区标识PCI信息、所述DU的跟踪区编码TAC信息、所述DU的基于无线接入网RAN的通知区号RANAC信息、所述DU的上下行信息、所述DU的性能信息、所述DU的上下行负荷、所述DU与所述IAB节点的MT之间的功率分配信息、所述DU对应的保护符号信息,以及所述DU对应的回传链路的干扰信息。
  6. 根据权利要求5所述的方法,其中,所述DU的系统信息为以下任一项:主系统信息块MIB信息、目标系统信息块SIB信息和其他SIB信息,所述其他SIB信息为除所述目标SIB信息之外的SIB信息;
    所述DU的系统信息中包括以下至少一项:所述DU对应的小区的公共陆地移动网络PLMN信息、所述DU对应的带宽部分BWP配置信息、所述DU对应的载波配置信息、所述DU对应的切片配置信息、所述DU对应的通用随机接入配置信息、所述DU对应的IAB专属随机接入配置信息、所述DU对应的寻呼配置信息、所述DU对应的邻小区信息、所述DU对应的小区选择配置信息、所述DU对应的广播消息的发送配置信息,以及所述DU对应的无线资源的配置信息。
  7. 根据权利要求5所述的方法,其中,所述DU的性能信息包括以下至少一项:所述DU的调度/发送/接收的处理时延、所述DU的射频信息、所述DU支持的频带和载波、所述DU的功率调整的动态范围、所述DU是否支持双连接的指示信息、所述DU是否支持EN-DC的指示信息、所述DU支持的复用模式、所述DU对应的天线配置支持的子载波间隔SCS信息、所述DU支持的调度模式、所述DU的非连续接收DRX功能信息、所述DU对应的抢先缓冲区状态报告BSR功能信息、所述DU的下行单跳流控功能信息、所述DU对应的无线资源控制RRC非激活态功能信息、所述DU对应的RRC空闲态功能信息、所述DU支持的业务种类信息,以及所述DU支持多输入多输出MIMO的相关能力信息。
  8. 根据权利要求1所述的方法,其中,所述切换请求消息中还包括第三目标信息,所述第三目标信息为所述IAB节点的相关上下文信息;
    所述第三目标信息包括以下至少一项:所述IAB节点对应的BAP实体的信息、所述IAB节点到父IAB节点或子IAB节点的回传BH无线链路控制RLC信道的配置信息、所述IAB节点的路由配置信息、所述IAB节点的局部负荷分流配置信息、所述IAB节点的承载映射配置信息、一个路由或BH RLC信道的拥塞状态信息、所述IAB节点对新无线NR小区或长期演进LTE小区的测量配置信息,以及所述IAB节点对应的网际互连协议IP地址信息。
  9. 根据权利要求1或8所述的方法,其中,所述切换请求消息中还包括以下至少一项:所述IAB节点的MT的能力信息和所述MT的类型信息,所述能力信息用于指示所述MT支持的用户设备UE功能。
  10. 一种网络切换方法,所述方法包括:
    目标集中单元CU接收源CU发送的切换请求消息,所述切换请求消息中包括第一目标信息,所述第一目标信息为待切换的自回传IAB节点的分布单元DU的上下文信息;
    所述目标CU根据所述切换请求消息,向所述源CU发送切换响应消息,所述切换响应消息中包括第一配置信息,所述第一配置信息为所述目标CU配置给所述DU的用于网络切换的信息。
  11. 根据权利要求10所述的方法,其中,所述切换请求消息中还包括第二目标信息,所述第二目标信息为所述IAB节点的移动终端MT的上下文信息;
    所述切换响应消息中还包括第二配置信息,所述第二配置信息为所述目标CU配置给所述MT的用于网络切换的信息。
  12. 根据权利要求10所述的方法,其中,所述第二配置信息包括以下至少一项:信令无线承载SRB信息、数据无线承载DRB信息、服务小区信息、功率控制信息、测量汇报信息、所述DU的Uu接口的小区配置信息、时频资源配置信息和路由信息。
  13. 根据权利要求10至12中任一项所述的方法,其中,所述切换响应消息中还包括以下至少一项:所述目标CU配置给所述IAB节点的回传适配协议BAP实体配置信息和目标路由配置信息,所述目标路由配置信息用于指示所述IAB节点在所述目标CU控制的网络中的转发数据路由关系。
  14. 根据权利要求10所述的方法,其中,所述第一目标信息包括以下至少一项: 所述DU的系统信息、所述DU的同步信号块SSB信息、所述DU的物理小区标识PCI信息、所述DU的跟踪区编码TAC信息、所述DU的基于无线接入网RAN的通知区号RANAC信息、所述DU的上下行信息、所述DU的性能信息、所述DU的上下行负荷、所述DU与所述IAB节点的MT之间的功率分配信息、所述DU对应的保护符号信息,以及所述DU对应的回传链路的干扰信息。
  15. 根据权利要求14所述的方法,其中,所述DU的系统信息为以下任一项:主系统信息块MIB信息、目标系统信息块SIB信息和其他SIB信息,所述其他SIB信息为除所述目标SIB信息之外的SIB信息;
    所述DU的系统信息中包括以下至少一项:所述DU对应的小区的公共陆地移动网络PLMN信息、所述DU对应的带宽部分BWP信息、所述DU对应的载波信息、所述DU对应的切片信息、所述DU对应的通用随机接入信息、所述DU对应的IAB专属随机接入信息、所述DU对应的寻呼配置信息、所述DU对应的邻小区信息、所述DU对应的小区选择配置信息、所述DU对应的广播消息的发送配置信息,以及所述DU对应的无线资源的配置信息。
  16. 根据权利要求14所述的方法,其中,所述DU的性能信息包括以下至少一项:所述DU的调度/发送/接收的处理时延、所述DU的射频信息、所述DU支持的频带和载波、所述DU的功率调整的动态范围、所述DU是否支持双连接的指示信息、所述DU是否支持EN-DC的指示信息、所述DU支持的复用模式、所述DU对应的天线配置支持的子载波间隔SCS信息、所述DU支持的调度模式、所述DU的非连续接收DRX功能信息、所述DU对应的抢先缓冲区状态报告BSR功能信息、所述DU的下行单跳流控功能信息、所述DU对应的无线资源控制RRC非激活态功能信息、所述DU对应的RRC空闲态功能信息、所述DU支持的业务种类信息,以及所述DU支持多输入多输出MIMO的相关能力信息。
  17. 根据权利要求10所述的方法,其中,所述切换请求消息中还包括第三目标信息,所述第三目标信息为所述IAB节点的相关上下文信息;
    所述第三目标信息包括以下至少一项:所述IAB节点对应的BAP实体的信息、所述IAB节点到父IAB节点或子IAB节点的回传BH无线链路控制RLC信道的配置信息、所述IAB节点的路由配置信息、所述IAB节点的局部负荷分流配置信息、所述IAB节点的承载映射配置信息、一个路由或BH RLC信道的拥塞状态信息、所述IAB节点对新无线NR小区或长期演进LTE小区的测量配置信息,以及所述IAB节点对应的网际互连协议IP地址信息。
  18. 根据权利要求10或17所述的方法,其中,所述切换请求消息中还包括以下至少一项:所述IAB节点的MT的能力信息和所述MT的类型信息,所述能力信息用于指示所述MT支持的用户设备UE功能。
  19. 一种网络切换方法,所述方法包括:
    自回传IAB节点接收源集中单元CU发送的第一配置信息,所述第一配置信息为目标CU配置给所述IAB节点的分布单元DU的用于网络切换的信息;
    所述IAB节点根据所述第一配置信息,执行所述DU的切换过程。
  20. 根据权利要求19所述的方法,其中,所述方法还包括:
    所述IAB节点接收所述源CU发送的第二配置信息,所述第二配置信息为所述目标CU配置给所述MT的用于网络切换的信息;
    所述IAB节点根据所述第二配置信息,执行所述MT的切换过程。
  21. 根据权利要求20所述的方法,其中,所述第二配置信息包括以下至少一项:信令无线承载SRB信息、数据无线承载DRB信息、服务小区信息、功率控制信息、测量汇报信息、所述DU的Uu接口的小区配置信息、时频资源配置信息和路由信息。
  22. 一种网络切换装置,所述网络切换装置包括:发送模块和接收模块;
    所述发送模块,用于向目标集中单元CU发送切换请求消息,所述切换请求消息中包括第一目标信息,所述第一目标信息为待切换的自回传IAB节点的分布单元DU的上下文信息;
    所述接收模块,用于接收所述目标CU发送的切换响应消息,所述切换响应消息中包括第一配置信息,所述第一配置信息为所述目标CU配置给所述DU的用于网络切换的信息;
    所述发送模块,还用于向所述IAB节点发送所述第一配置信息,所述第一配置信息用于所述IAB节点执行所述DU的切换过程。
  23. 根据权利要求22所述的装置,其中,所述切换请求消息中还包括第二目标信息,所述第二目标信息为所述IAB节点的移动终端MT的上下文信息;所述切换响应消息中还包括第二配置信息,所述第二配置信息为所述目标CU配置给所述MT的用于网络切换的信息;
    所述发送模块,还用于向所述IAB节点发送所述第二配置信息,所述第二配置信息用于所述IAB节点执行所述MT的切换过程。
  24. 根据权利要求23所述的装置,其中,所述第二配置信息包括以下至少一项:信令无线承载SRB信息、数据无线承载DRB信息、服务小区信息、功率控制信息、测量汇报信息、所述DU的Uu接口的小区配置信息、时频资源配置信息和路由信息。
  25. 根据权利要求22至24中任一项所述的装置,其中,所述切换响应消息中还包括以下至少一项:所述目标CU配置给所述IAB节点的回传适配协议BAP实体配置信息和目标路由配置信息,所述目标路由配置信息用于指示所述IAB节点在所述目标CU控制的网络中的转发数据路由关系。
  26. 根据权利要求22所述的装置,其中,所述第一目标信息包括以下至少一项:所述DU的系统信息、所述DU的同步信号块SSB信息、所述DU的物理小区标识PCI信息、所述DU的跟踪区编码TAC信息、所述DU的基于无线接入网RAN的通知区号RANAC信息、所述DU的上下行信息、所述DU的性能信息、所述DU的上下行负荷、所述DU与所述IAB节点的MT之间的功率分配信息、所述DU对应的保护符号信息,以及所述DU对应的回传链路的干扰信息。
  27. 根据权利要求26所述的装置,其中,所述DU的系统信息为以下任一项:主系统信息块MIB信息、目标系统信息块SIB信息和其他SIB信息,所述其他SIB信息为除所述目标SIB信息之外的SIB信息;
    所述DU的系统信息中包括以下至少一项:所述DU对应的小区的公共陆地移动网络PLMN信息、所述DU对应的带宽部分BWP配置信息、所述DU对应的载波配 置信息、所述DU对应的切片配置信息、所述DU对应的通用随机接入配置信息、所述DU对应的IAB专属随机接入配置信息、所述DU对应的寻呼配置信息、所述DU对应的邻小区信息、所述DU对应的小区选择配置信息、所述DU对应的广播消息的发送配置信息,以及所述DU对应的无线资源的配置信息。
  28. 根据权利要求26所述的装置,其中,所述DU的性能信息包括以下至少一项:所述DU的调度/发送/接收的处理时延、所述DU的射频信息、所述DU支持的频带和载波、所述DU的功率调整的动态范围、所述DU是否支持双连接的指示信息、所述DU是否支持EN-DC的指示信息、所述DU支持的复用模式、所述DU对应的天线配置支持的子载波间隔SCS信息、所述DU支持的调度模式、所述DU的非连续接收DRX功能信息、所述DU对应的抢先缓冲区状态报告BSR功能信息、所述DU的下行单跳流控功能信息、所述DU对应的无线资源控制RRC非激活态功能信息、所述DU对应的RRC空闲态功能信息、所述DU支持的业务种类信息,以及所述DU支持多输入多输出MIMO的相关能力信息。
  29. 根据权利要求22所述的装置,其中,所述切换请求消息中还包括第三目标信息,所述第三目标信息为所述IAB节点的相关上下文信息;
    所述第三目标信息包括以下至少一项:所述IAB节点对应的BAP实体的信息、所述IAB节点到父IAB节点或子IAB节点的回传BH无线链路控制RLC信道的配置信息、所述IAB节点的路由配置信息、所述IAB节点的局部负荷分流配置信息、所述IAB节点的承载映射配置信息、一个路由或BH RLC信道的拥塞状态信息、所述IAB节点对新无线NR小区或长期演进LTE小区的测量配置信息,以及所述IAB节点对应的网际互连协议IP地址信息。
  30. 根据权利要求22或29所述的装置,其中,所述切换请求消息中还包括以下至少一项:所述IAB节点的MT的能力信息和所述MT的类型信息,所述能力信息用于指示所述MT支持的用户设备UE功能。
  31. 一种网络切换装置,所述网络切换装置包括:接收模块和发送模块;
    所述接收模块,用于接收源集中单元CU发送的切换请求消息,所述切换请求消息中包括第一目标信息,所述第一目标信息为待切换的自回传IAB节点的分布单元DU的上下文信息;
    所述发送模块,用于根据所述切换请求消息,向所述源CU发送切换响应消息,所述切换响应消息中包括第一配置信息,所述第一配置信息为所述目标CU配置给所述DU的用于网络切换的信息。
  32. 根据权利要求31所述的装置,其中,所述切换请求消息中还包括第二目标信息,所述第二目标信息为所述IAB节点的移动终端MT的上下文信息;
    所述切换响应消息中还包括第二配置信息,所述第二配置信息为所述目标CU配置给所述MT的用于网络切换的信息。
  33. 根据权利要求31所述的装置,其中,所述第二配置信息包括以下至少一项:信令无线承载SRB信息、数据无线承载DRB信息、服务小区信息、功率控制信息、测量汇报信息、所述DU的Uu接口的小区配置信息、时频资源配置信息和路由信息。
  34. 根据权利要求31至33中任一项所述的装置,其中,所述切换响应消息中还 包括以下至少一项:所述目标CU配置给所述IAB节点的回传适配协议BAP实体配置信息和目标路由配置信息,所述目标路由配置信息用于指示所述IAB节点在所述目标CU控制的网络中的转发数据路由关系。
  35. 根据权利要求31所述的装置,其中,所述第一目标信息包括以下至少一项:所述DU的系统信息、所述DU的同步信号块SSB信息、所述DU的物理小区标识PCI信息、所述DU的跟踪区编码TAC信息、所述DU的基于无线接入网RAN的通知区号RANAC信息、所述DU的上下行信息、所述DU的性能信息、所述DU的上下行负荷、所述DU与所述IAB节点的MT之间的功率分配信息、所述DU对应的保护符号信息,以及所述DU对应的回传链路的干扰信息。
  36. 根据权利要求35所述的装置,其中,所述DU的系统信息为以下任一项:主系统信息块MIB信息、目标系统信息块SIB信息和其他SIB信息,所述其他SIB信息为除所述目标SIB信息之外的SIB信息;
    所述DU的系统信息中包括以下至少一项:所述DU对应的小区的公共陆地移动网络PLMN信息、所述DU对应的带宽部分BWP信息、所述DU对应的载波信息、所述DU对应的切片信息、所述DU对应的通用随机接入信息、所述DU对应的IAB专属随机接入信息、所述DU对应的寻呼配置信息、所述DU对应的邻小区信息、所述DU对应的小区选择配置信息、所述DU对应的广播消息的发送配置信息,以及所述DU对应的无线资源的配置信息。
  37. 根据权利要求35所述的装置,其中,所述DU的性能信息包括以下至少一项:所述DU的调度/发送/接收的处理时延、所述DU的射频信息、所述DU支持的频带和载波、所述DU的功率调整的动态范围、所述DU是否支持双连接的指示信息、所述DU是否支持EN-DC的指示信息、所述DU支持的复用模式、所述DU对应的天线配置支持的子载波间隔SCS信息、所述DU支持的调度模式、所述DU的非连续接收DRX功能信息、所述DU对应的抢先缓冲区状态报告BSR功能信息、所述DU的下行单跳流控功能信息、所述DU对应的无线资源控制RRC非激活态功能信息、所述DU对应的RRC空闲态功能信息、所述DU支持的业务种类信息,以及所述DU支持多输入多输出MIMO的相关能力信息。
  38. 根据权利要求31所述的装置,其中,所述切换请求消息中还包括第三目标信息,所述第三目标信息为所述IAB节点的相关上下文信息;
    所述第三目标信息包括以下至少一项:所述IAB节点对应的BAP实体的信息、所述IAB节点到父IAB节点或子IAB节点的回传BH无线链路控制RLC信道的配置信息、所述IAB节点的路由配置信息、所述IAB节点的局部负荷分流配置信息、所述IAB节点的承载映射配置信息、一个路由或BH RLC信道的拥塞状态信息、所述IAB节点对新无线NR小区或长期演进LTE小区的测量配置信息,以及所述IAB节点对应的网际互连协议IP地址信息。
  39. 根据权利要求31或38所述的装置,其中,所述切换请求消息中还包括以下至少一项:所述IAB节点的MT的能力信息和所述MT的类型信息,所述能力信息用于指示所述MT支持的用户设备UE功能。
  40. 一种网络切换装置,所述网络切换装置包括:接收模块和执行模块;
    所述接收模块,用于接收源集中单元CU发送的第一配置信息,所述第一配置信息为目标CU配置给自回传IAB节点的分布单元DU的用于网络切换的信息;
    所述执行模块,用于根据所述第一配置信息,执行所述DU的切换过程。
  41. 根据权利要求40所述的装置,其中,所述接收模块,还用于接收所述源CU发送的第二配置信息,所述第二配置信息为所述目标CU配置给所述MT的用于网络切换的信息;
    所述执行模块,还用于根据所述第二配置信息,执行所述MT的切换过程。
  42. 根据权利要求41所述的装置,其中,所述第二配置信息包括以下至少一项:信令无线承载SRB信息、数据无线承载DRB信息、服务小区信息、功率控制信息、测量汇报信息、所述DU的Uu接口的小区配置信息、时频资源配置信息和路由信息。
  43. 一种集中单元CU,包括处理器,存储器及存储在所述存储器上并可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现如权利要求1至9中任一项所述的网络切换方法的步骤。
  44. 一种集中单元CU,包括处理器,存储器及存储在所述存储器上并可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现如权利要求10至18中任一项所述的网络切换方法的步骤。
  45. 一种自回传IAB节点,包括处理器,存储器及存储在所述存储器上并可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现如权利要求19至21中任一项所述的网络切换方法的步骤。
  46. 一种通信系统,所述通信系统包括如权利要求22至30中任一项所述的网络切换装置、权利要求31至39中任一项所述的网络切换装置以及权利要求40至42中任一项所述的网络切换装置;或者,
    所述通信系统包括如权利要求43所述的集中单元CU、权利要求44所述的CU以及权利要求45所述的自回传IAB节点。
  47. 一种可读存储介质,所述可读存储介质上存储程序或指令,所述程序或指令被处理器执行时实现如权利要求1至9中任一项所述的网络切换方法的步骤,或者如权利要求10至18中任一项所述的网络切换方法的步骤,或者如权利要求19至21中任一项所述的网络切换方法的步骤。
  48. 一种计算机程序产品,所述程序产品被至少一个处理器执行以实现如权利要求1至9中任一项所述的网络切换方法,或者实现如权利要求10至18中任一项所述的网络切换方法,或者实现如权利要求19至21中任一项所述的网络切换方法。
  49. 一种集中单元CU,包括所述CU被配置成用于执行如权利要求1至9中任一项所述的网络切换方法,或者如权利要求10至18中任一项所述的网络切换方法。
  50. 一种自回传IAB节点,包括所述IAB节点被配置成用于执行如权利要求19至21中任一项所述的网络切换方法。
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