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 PDFInfo
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
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- H—ELECTRICITY
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- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
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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
Description
Claims (50)
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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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WO2024094687A3 (en) * | 2022-11-03 | 2024-06-13 | Canon Kabushiki Kaisha | Migration of nodes in an iab communication system |
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