WO2022194074A1 - 自回传网络的切换方法、装置及网络侧设备 - Google Patents
自回传网络的切换方法、装置及网络侧设备 Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0033—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0064—Transmission or use of information for re-establishing the radio link of control information between different access points
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- H04W36/08—Reselecting an access point
- H04W36/087—Reselecting an access point between radio units of access points
Definitions
- the present invention requires the priority of the Chinese patent application filed on March 17, 2021 with the application number 202110286829.2 and the invention title "Switching method, device and network side equipment for self-backhaul network”. The contents are incorporated herein by reference.
- the present application belongs to the technical field of wireless communication, and in particular relates to a handover method, device and network side equipment for a self-backhaul network.
- IAB Integrated Access Backhaul
- UE which may also be referred to as terminal equipment
- IAB node IAB node
- Data is transmitted between the UE and the access node through a wireless access link (access link), and data can be transmitted between the access nodes through a wireless backhaul link (backhaul link).
- the support centralized unit (Central Unit, CU) node of its IAB network is located in the host (donor) IAB node, called IAB-donor-CU, all directly connected to the donor IAB node Or connecting to the donor IAB node through the downstream IAB node of the donor IAB node belongs to the control of the IAB-donor-CU. That is to say, an IAB node and its downstream nodes (IAB/UE) are all controlled by the IAB-donor-CU of the IAB node, that is, the context information of the mobile IAB network is all in the IAB-donor-CU.
- the mobile user and the mobile IAB node move together, and the IAB-donor-CU node is fixed.
- the high-speed train crosses the coverage area of a CU node
- the mobile IAB node and its downstream nodes (such as IAB node/UE node) deployed on the train need to switch from the original IAB-donor-CU node to the target IAB-donor-CU node.
- the context information of the mobile IAB node and its downstream nodes also needs to be sent from the original IAB-donor-CU node to the target IAB-donor-CU node, so that the target IAB-donor-CU node can be based on the mobile IAB node and its downstream nodes.
- the context information generates a reconfiguration message and sends it to the mobile IAB node and its downstream nodes through the original IAB-donor-CU node, which means that there is a large amount of signaling to be transmitted, resulting in the occurrence of signaling storms and the increase of handover delay. big.
- the embodiments of the present application provide a method, an apparatus, and a network-side device for switching a self-backhaul network, which can solve the problems of signaling storms and large switching delays that may occur during IAB network switching.
- a method for switching a self-backhaul network is provided, which is performed by an original CU node.
- the method includes: in the case of triggering switching, sending a second network switching request to a target CU node, the second network switching
- the handover request includes at least context information of the first network node, the context information is the context information of the first network node when the handover is triggered, and is relative to the context of the first network node included in the first network handover request At least part of the information that the information has changed, the first network handover request is sent by the original CU node to the target CU node before the handover is triggered, and the first network node is any IAB network to be handed over.
- a network node receiving a second network handover response sent by the target CU node, where the second network handover response at least includes second reconfiguration information, and the second reconfiguration information is configured by the target CU node according to the A second network handover request is generated; the handover of the first network node from the original CU node to the target CU node is configured based on the first reconfiguration information and the second reconfiguration information, and the first reconfiguration information is in the Before the handover is triggered, it is generated by the target CU node according to the first network handover request.
- a method for switching a self-backhaul network executed by a target CU node, the method includes: receiving a second network switching request sent by an original CU node when switching is triggered, the second network switching request It includes at least the context information of the first network node, and the context information is the context information of the first network node when the handover is triggered, which occurs with respect to the context information of the first network node included in the first network handover request.
- the first network handover request is sent by the original CU node to the target CU node before the handover is triggered, and the first network node is any network in the IAB network to be handed over node; sending a second network handover response to the original CU node, where the second network handover response includes second reconfiguration information, and the second reconfiguration information is requested by the target CU node according to the second network handover request generate.
- a switching device for a self-backhaul network includes: a first sending module, configured to send a second network switching request to a target CU node in the case of triggering switching, the second sending module
- the network handover request includes at least the context information of the first network node, the context information is the context information of the first network node when the handover is triggered, and is relative to the first network node included in the first network handover request.
- the first network handover request is sent by the original CU node to the target CU node before the handover is triggered, and the first network node is any one of the IAB networks to be handed over a network node; a first receiving module configured to receive a second network handover response sent by the target CU node, where the second network handover response at least includes second reconfiguration information, and the second reconfiguration information is sent by the The target CU node is generated according to the second network handover request; a configuration module is configured to configure the first network node from the original CU node to the target CU node based on the first reconfiguration information and the second reconfiguration information. handover, the first reconfiguration information is generated by the target CU node according to the first network handover request before handover is triggered.
- a switching device for a self-backhaul network includes: a first sending module, configured to send a second network switching request to a target CU node in the case of triggering switching, the second sending module
- the network handover request includes at least the context information of the first network node, the context information is the context information of the first network node when the handover is triggered, and is relative to the first network node included in the first network handover request.
- the first network handover request is sent by the original CU node to the target CU node before the handover is triggered, and the first network node is any one of the IAB networks to be handed over a network node; a first receiving module configured to receive a second network handover response sent by the target CU node, where the second network handover response at least includes second reconfiguration information, and the second reconfiguration information is sent by the The target CU node is generated according to the second network handover request; a configuration module is configured to configure the first network node from the original CU node to the target CU node based on the first reconfiguration information and the second reconfiguration information. handover, the first reconfiguration information is generated by the target CU node according to the first network handover request before handover is triggered.
- a network-side device in a fifth aspect, includes a processor, a memory, and a program or instruction stored on the memory and executable on the processor, the program or instruction being executed by the The processor implements the steps of the method as described in the first aspect or the second aspect when executed.
- a network side device including a processor and a communication interface, wherein the processor and the communication interface are used to implement the steps of the method according to the first aspect or the second aspect.
- a readable storage medium is provided, and a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the steps of the method described in the first aspect, or the The steps of the method of the second aspect.
- a chip in an eighth aspect, 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, and implements the method described in the first aspect. the method described, or implement the method described in the second aspect.
- a computer program product comprising a processor, a memory, and a program or instruction stored on the memory and executable on the processor, the program or instruction being executed by the
- the processor implements the steps of the method as described in the first aspect or the second aspect when executed.
- the original CU node before the handover is triggered, the original CU node obtains the first reconfiguration information through the first network handover request, so that when the handover is triggered, only the context information is obtained through the second network handover request In this way, the amount of signaling that needs to be transmitted after the handover is triggered can be greatly reduced, thereby avoiding the occurrence of signaling storms, and at the same time, it can also shorten the handover caused by the need to obtain reconfiguration information. delay to ensure network switching performance.
- FIG. 1 is a schematic structural diagram of a wireless communication system provided by an exemplary embodiment of the present application.
- FIG. 2a is a schematic structural diagram of a mobile IAB system provided by an exemplary embodiment of the present application.
- FIG. 2b is a schematic structural diagram of an IAB network to be handed over according to an exemplary embodiment of the present application.
- FIG. 3 is a schematic flowchart of a method 300 for switching a self-backhaul network according to an exemplary embodiment of the present application.
- FIG. 4 is a schematic flowchart of a method 400 for switching a self-backhaul network according to an exemplary embodiment of the present application.
- FIG. 5 is a schematic diagram of an interaction flow of a method 500 for switching a self-backhaul network provided by an exemplary embodiment of the present application.
- FIG. 6 is a schematic flowchart of a method 600 for switching a self-backhaul network provided by an exemplary embodiment of the present application.
- FIG. 7 is a schematic block diagram of a switching apparatus 700 of a self-backhaul network provided by an exemplary embodiment of the present application.
- FIG. 8 is a schematic block structural diagram of a switching apparatus 800 of a self-backhaul network provided by an exemplary embodiment of the present application.
- FIG. 9 is a schematic block diagram of a network side device provided by an exemplary embodiment of the present application.
- first, second and the like in the description and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and that "first”, “second” distinguishes Usually it is a class, and the number of objects is not limited.
- the first object may be one or multiple.
- “and/or” in the description and claims indicates at least one of the connected objects, and the character “/" generally indicates that the associated objects are in an "or” relationship.
- LTE Long Term Evolution
- LTE-Advanced LTE-Advanced
- LTE-A Long Term Evolution
- 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 not only for the above-mentioned systems and radio technologies, but also for other systems and radio technologies.
- 6G 6th Generation
- FIG. 1 shows a schematic diagram of a result of a wireless communication system to which an embodiment of the present application can be applied.
- the wireless communication system includes a terminal 11 and a network-side device 12.
- the terminal 11 may also be called a terminal device or a user terminal, and the terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer) or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (Mobile Internet Device, MID), wearable device (Wearable Device) or vehicle-mounted equipment (VUE), pedestrian terminal (PUE) and other terminal-side devices, wearable devices include: bracelets, headphones, glasses, etc.
- the network side device 12 may be a base station or a core network, wherein the base station may be referred to as a Node B, an evolved Node B, an access point, a Base Transceiver Station (BTS), a radio base station, a radio transceiver, a basic service Set (Basic Service Set, BSS), Extended Service Set (Extended Service Set, ESS), Node B, Evolved Node B (eNB), Home Node B, Home Evolved Node B, WLAN Access Point, WiFi Node, Send Transmitting Receiving Point (TRP) or some other suitable term in the field, as long as the same technical effect is achieved, the base station is not limited to specific technical terms.
- the base station in the NR system is taken as an example, but the specific type of the base station is not limited.
- the UE may include, but is not limited to, a mobile station (Mobile Station, MS), a mobile terminal (Mobile Terminal), a mobile phone (Mobile Phone), a mobile phone (handset), a portable device (portable equipment), a vehicle ( vehicle), etc.
- the UE can communicate with one or more core networks via a radio access network (Radio Access Network, RAN), for example, the UE can provide radio access services by an IAB network node.
- RAN Radio Access Network
- the UE may be a mobile phone (or referred to as a "cellular" phone), a computer with wireless communication functions, etc.
- the terminal device may also be a portable, pocket-sized, hand-held, computer-built or vehicle-mounted mobile device.
- FIG. 2 a is a CU-DU structural diagram of a mobile IAB system provided by an embodiment of the present application.
- the DUs in the most upstream IAB network node in the IAB network are all connected to a CU network, and the CU network can pass through F1-
- the AP protocol configures the DU, and the MT is configured through the Radio Resource Control (Radio Resource Control, RRC) protocol.
- RRC Radio Resource Control
- a self-backhaul link also includes a host (Donor) IAB network node (or called IAB Donor), the Donor IAB network node does not have the MT function part, but the Donor IAB network node has a wired transmission network directly connected to it. .
- Donor IAB network node
- the Donor IAB network node does not have the MT function part, but the Donor IAB network node has a wired transmission network directly connected to it.
- the IAB network 1 may include a plurality of IAB network nodes (such as IAB1, IAB2, IAB3...) shown in Fig. 2b, and UEs (UE1, UE2... shown in Fig.
- network node IAB1 is an IAB
- network node IAB2 is the parent IAB network node of its adjacent downstream network node IAB3..., in other words , the network node IAB2 is a sub-IAB network node of its adjacent upstream network node IAB1, and the network node IAB3 is a sub-IAB network node of its adjacent downstream network node IAB2.
- one IAB network node may provide network access services for one or more UEs.
- FIG. 3 it is a schematic flowchart of a method 300 for switching a self-backhaul network provided by an exemplary embodiment of the present application.
- the method 300 may be executed by the original CU node, and specifically may be installed in the original CU node. Software and/or hardware implementation.
- the method 300 includes at least the following steps.
- S310 In the case of triggering the handover, send a second network handover request to the target CU node.
- the second network handover request includes at least context information of the first network node
- the context information is the context information of the first network node when the handover is triggered, relative to the context information included in the first network handover request at least part of the information that the context information of the first network node has changed
- the first network handover request is sent by the original CU node to the target CU node before the handover is triggered, and the first network node is to be Any network node in the IAB network to be handed over, such as an IAB node or a UE served by an IAB node.
- the context information of the first network node may be different.
- the context information includes the IAB-MT The context information and/or the context information of the F1 connection of the IAB-DU; for another example, when the first network node is a UE, the context information of the RRC connection.
- the first network handover request (that is, the early handover request) is sent by the original CU node to the target CU node before the handover is triggered, so as to obtain in advance the information of each network in the IAB network to be handed over before the handover is triggered.
- the reconfiguration information of the network node thus, in the case of triggering handover, the original CU node can obtain a small amount of reconfiguration information by sending a second network handover request (ie, a later handover request), such as context information relative to the first
- a second network handover request ie, a later handover request
- the predetermined time interval and/or the actual sending time point of the first network handover request before the handover is triggered may be configured through high-level signaling configuration or protocol agreement, or configured by the OAM system, which is not covered in this embodiment. make restrictions.
- S320 Receive a second network switching response sent by the target CU node.
- the second network handover response includes at least second reconfiguration information
- the second reconfiguration information is used by the target CU node according to the second A network handover request is generated.
- the target CU node since the second network handover request includes the context information of the first network node or the changed part of the context information, in response, the target CU node sends the second network handover response to the original CU node
- the handover reconfiguration information or the changed part of the handover reconfiguration information corresponding to the context information or the changed part of the context information may also be included.
- the second reconfiguration information includes radio resource control (Radio Resource Control, RRC) reconfiguration information; when the second network node is an IAB node
- RRC Radio Resource Control
- the second reconfiguration information includes the RRC reconfiguration information of the IAB-MT and/or the F1 connection reconfiguration message of the IAB-DU.
- the second network handover request may include indication information for indicating that it is a later handover request, and the indication information may be configured by a high layer or agreed in a protocol, which is not limited.
- S330 Configure the handover of the first network node from the original CU node to the target CU node based on the first reconfiguration information and the second reconfiguration information.
- the first reconfiguration information is generated by the target CU node according to the first network handover request before handover is triggered.
- the first reconfiguration information may include RRC reconfiguration information; when the second network node is an IAB node
- the first reconfiguration information may include the RRC reconfiguration information of the IAB-MT and/or the F1 connection reconfiguration message of the IAB-DU.
- the original CU node sends the IAB network 1 to be handed over (including IAB1, IAB2, IAB3, The context information of UE1, UE2, .
- the context information of the IAB1 node in the IAB network 1 is relative to the context of the IAB1 node (that is, the aforementioned first network node) included in the first network handover request.
- the original CU node can send the changed context information in the IAB1 node to the target CU node through the second network handover request again, so as to obtain the corresponding second reconfiguration information, and then based on the second network handover request.
- the first reconfiguration information configures and the second reconfiguration information configures the handover of the IAB1 node, and configures the handover of other network nodes except the IAB1 node in the IAB network 1 based on the first reconfiguration information, Therefore, after the handover is triggered, the amount of signaling that needs to be transmitted after the handover is triggered can be greatly reduced, thereby avoiding the occurrence of signaling storms, and shortening the handover delay caused by the need to obtain reconfiguration information, ensuring network handover performance.
- FIG. 4 it is a schematic flowchart of a method 400 for switching a self-backhaul network provided by an exemplary embodiment of the present application.
- the method 400 may be executed by the original CU node, and specifically may be installed in the original CU node.
- the method 300 includes at least the following steps.
- the first network handover request includes at least the context information of the first network node when the original CU node sends the first network handover request. It can be understood that when the IAB network to be switched includes multiple network nodes, the first network switching request may include context information of the multiple network nodes.
- the first network handover request may further include first information for indicating to the target CU node that the first network handover request is an early handover request.
- the first network handover request may use a new RRC IE, or reuse an existing handover request IE, such as adding an indication field (that is, an indication field) to the existing handover request IE. first information) to indicate that the target CU node does not need to reserve resources for these nodes to be switched immediately, so as to avoid resource waste.
- the first information may include a handover occurrence place and/or a handover occurrence time point, wherein the handover occurrence place and/or the handover occurrence time point are the predetermined movement of the original CU node according to the mobile IAB system Routes, movement speeds, and deployment information for alternative IAB hosts are predicted.
- the predetermined moving route, moving speed, and deployment information of the alternative IAB host of the mobile IAB system may be a protocol agreement or a configuration through high-level signaling, etc., which is not limited herein.
- S420 Receive a first network switching response sent by the target CU node.
- the first network handover response is generated by the target CU node according to the first network handover request, that is, the first reconfiguration information included in the first network handover response is generated by the target CU
- the node is generated according to the context information included in the first network handover request.
- the first network handover response may also include second information, where the second information is used to indicate that the first network handover response is an early handover response.
- second information is used to indicate that the first network handover response is an early handover response.
- a new RRC IE may be used for the second network handover response, or an existing handover request response IE may be reused, such as adding an indication field (that is, the second information) to the existing handover request IE. , to indicate that this is an early handover request response.
- S430 in the case of triggering the handover, send a second network handover request to the target CU node.
- the second network handover request includes at least context information of the first network node
- the context information is the context information of the first network node when the handover is triggered, relative to the context information included in the first network handover request at least part of the information that the context information of the first network node has changed
- the first network handover request is sent by the original CU node to the target CU node before the handover is triggered, and the first network node is to be Any network node in the switched IAB network.
- S440 Receive a second network switching response sent by the target CU node.
- the second network handover response includes at least second reconfiguration information
- the second reconfiguration information is generated by the target CU node according to the second network handover request.
- S450 Configure the handover of the first network node from the original CU node to the target CU node based on the first reconfiguration information and the second reconfiguration information.
- the first reconfiguration information is generated by the target CU node according to the first network handover request before handover is triggered.
- the first reconfiguration information described in S450 is based on the first reconfiguration information.
- the second reconfiguration information, configuring the handover of the first network node from the original CU node to the target CU node may include at least one of the following (1)-(2).
- the original CU node sends a handover trigger notification to the target CU node, where the handover trigger notification is used to notify the target CU node of the node information of the first network node.
- the handover trigger notification may include a list of handover node identifiers to indicate that the node corresponding to the handover node identifier is a node to be handed over (eg, a first network node).
- the original CU node sends a handover trigger notification to the target CU node, where the handover trigger notification is used to notify the target CU node that the handover of the first network node is about to occur.
- the original CU node can simultaneously indicate to the target CU node the node information of the first network node and that the handover of the first network node is about to take place through one of the handover trigger notifications, or it can be
- the two handover trigger notifications respectively indicate to the target CU node the node information of the first network node and the handover of the first network node, which is not limited.
- the target CU node can configure resources for the node to be handed over (such as the first network node), and send determination information to the original CU node, the original CU node
- the node sends the target reconfiguration information to the first network node, so that the timing of handover can be controlled without affecting the UE, ensuring user communication experience.
- the target reconfiguration information is obtained by replacing or updating the first reconfiguration information by using the second reconfiguration information. That is, if the second network handover response received by the original CU node (that is, the post-handover response message of a node) contains all the reconfiguration parameter settings of the first network node, the second reconfiguration information is directly used.
- the original CU node that is, a The post-handover response message of the node only contains the reconfiguration parameter settings of the part corresponding to the changed context information, then the original CU will replace the second reconfiguration information (ie post-reconfiguration message) corresponding to the first network node
- the first reconfiguration information (that is, the previous reconfiguration message) is combined and sent to the first network node as the target reconfiguration information, so as to replace the first reconfiguration information cached earlier.
- the IAB node stores the received target reconfiguration information, And after the handover is triggered, the stored target reconfiguration information is sent to the UE served by it; or, the IAB node stores the received target reconfiguration information, and sends the target reconfiguration information to the UE served by it.
- Each of the UEs stores their own reconfiguration information. Therefore, by pre-buffering their own reconfiguration information, each network node can make the switch directly based on the cached reconfiguration information when receiving a trigger notification, thereby Significantly shorten the switching delay.
- the handover can be sent. sending start notification information to the first network node, where the handover start notification information is used to instruct the first network node to perform handover according to the cached target reconfiguration information, and correspondingly, the first network node receives the handover start
- the switch is initiated by pressing the switch start notification information.
- the handover start notification information may be transmitted through F1 signaling, RRC signaling or BAP Control PDU signaling.
- the context information of the first network node is relative to the first network node.
- the context information of the first network node included in the network handover request has not changed, then, in the case of triggering the handover, the original CU node can directly configure the first network node from the first reconfiguration information based on the first reconfiguration information. Switching from the original CU node to the target CU node.
- the original CU node sends a handover trigger notification to the target CU node to notify the target CU node of the node information for notifying the first network node, and/or to the target CU node
- the target CU node notifies the first network node that the handover is about to take place, and in the case of receiving the confirmation information fed back by the target CU node, sends the first reconfiguration information to the first network node for caching, and/ Or the first network node forwards it to the UE served by it, etc., so that the first network node and/or the UE served by it can perform handover based on the reconfiguration information cached respectively, thereby avoiding the handover process.
- Obtaining reconfiguration information in the case of triggering can greatly reduce the amount of signaling that needs to be transmitted after triggering the handover, thereby avoiding the occurrence of signaling storms, shortening the handover delay caused by the need to obtain reconfiguration information, and ensuring network handover performance .
- the original CU node when the original CU node sends the first reconfiguration information to the first network node, it may be before the handover is triggered, or it may be when it is determined that the context information of the first network node has not changed. It may be when the confirmation information sent by the target CU node is received, which is not limited here.
- the absolute relationship between the original CU node and the target CU node is Most of the signaling (such as Xn interface signaling, etc.) interaction is completed before the handover is triggered, and there is a large timing advance. In this case, if the handover is triggered, the original CU node only needs to be handed over.
- the context in the IAB network All or part of the configuration parameters of the node whose information has changed is updated to the handover preparation process again, thereby greatly reducing the impact of signaling storms caused by fast handover.
- the handover process is always under the control of the network, so as to achieve large-scale handover under the circumstance of avoiding handover storms.
- the IAB network node to be handed over includes a plurality of first
- the scale switching of multiple first network nodes is simultaneously realized.
- the original CU node predicts whether the IAB network handover needs to be performed according to the predetermined moving route, moving speed of the mobile IAB system and deployment information of the candidate IAB host.
- the original CU node sends the first network handover request to the target CU node.
- the target CU node sends a first network switching response to the original CU node.
- the target CU node sends a second network switching response to the original CU node.
- the original CU node sends a handover trigger notification to the target CU node.
- the target CU node configures resources for the node to be switched, and feeds back confirmation information to the original CU node.
- the target reconfiguration information sent by the original CU node is IAB node 1
- the first reconfiguration information sent by the original CU node is IAB node 1
- the context A node whose information is changed relative to the context information of the IAB node 1 included in the first network handover request
- the IAB node 2 indicates that after the handover is triggered
- the context information is relative to the context of the IAB node 2 included in the first network handover request. Nodes whose information has not changed.
- the IAB node 1 caches the received target reconfiguration information, and/or the IAB node 2 caches the received first reconfiguration information.
- the IAB node 1 caches the received target reconfiguration information, and/or the IAB node 2 caches the received first reconfiguration information.
- the target reconfiguration information received by the IAB node 1 is sent to the UE1 served by the IAB node 1, and/or the IAB node 2 sends the received first reconfiguration information to the UE2 served by the IAB node 2.
- the original CU node sends the handover start notification information to the IAB node 1 and the IAB node 2.
- the IAB node 1 and the IAB node 2 perform handover based on the cached reconfiguration information.
- FIG. 6 it is a schematic flowchart of a method 600 for switching a self-backhaul network provided by an exemplary embodiment of the present application.
- the method 600 can be executed by a target CU node, and specifically can be installed in the target CU node.
- the method 600 includes at least the following steps.
- S610 Receive a second network handover request sent by the original CU node when the handover is triggered, where the second network handover request at least includes context information of the first network node, where the context information is the first network when the handover is triggered The context information of the node, relative to at least part of the information that the context information of the first network node included in the first network handover request has changed, the first network handover request is sent by the original CU node before the handover is triggered. sent to the target CU node, where the first network node is any network node in the IAB network to be switched;
- S620 Send a second network handover response to the original CU node, where the second network handover response includes second reconfiguration information, and the second reconfiguration information is requested by the target CU node according to the second network handover request generate.
- the target CU node before the handover is triggered, the target CU node generates the first reconfiguration information according to the received first network handover request, and sends it to the original CU node, so that in the case of the handover trigger, it only needs to be based on the received first reconfiguration information.
- the received second network handover request generates second reconfiguration information and sends it to the source CU node, wherein at least the context information of the first network node included in the second network handover request is the first network node when the handover is triggered.
- At least part of the information that the context information of the node is changed relative to the context information of the first network node included in the first network handover request thereby greatly reducing the amount of signaling that needs to be transmitted after triggering the handover, thereby avoiding signaling
- the occurrence of storms, and the shortening of the handover delay caused by the need to obtain reconfiguration information ensure the network handover performance.
- the method further includes at least one of the following (1)-(2).
- the method further includes: in the case of receiving the handover trigger notification, feeding back confirmation information to the original CU node, and/or configuring network switching resources corresponding to the first network node.
- the method before receiving the second network switching request sent by the original CU node, the method further includes: receiving a first network switching request sent by the original CU node, where the first network switching request is Sent by the original CU node when it is predicted that the IAB network handover needs to be performed, the first network handover request at least includes the first network handover request when the original CU node sends the first network handover request.
- Context information of the network node send a first network handover response to the original CU node, where the first network handover response includes first reconfiguration information, and the first reconfiguration information is sent by the The target CU node is generated according to the first network handover request.
- the first network handover request further includes first information, which is used to indicate that the first network handover request is an early handover request; and/or the first network handover response further includes Including second information, the second information is used to indicate that the first network handover response is an early handover response.
- the first information includes a handover occurrence place and/or a handover occurrence time point, wherein the handover occurrence place and/or the handover occurrence time point are the original CU node according to the mobile IAB system
- the predetermined moving route, moving speed, and deployment information of candidate IAB hosts are predicted.
- the first reconfiguration information and the second reconfiguration information include RRC reconfiguration information; in the second network node
- the first reconfiguration information and the second reconfiguration information include the RRC reconfiguration information of the IAB-MT and/or the F1 connection reconfiguration message of the IAB-DU.
- the execution subject may be a self-backhaul network switching device, or, in the self-backhaul network switching device, the The control modules of the switching methods 300-600 of the self-backhaul network.
- the switching device of the self-backhaul network provided by the embodiment of the present application is described by taking the self-backhaul network handover method 300 - 600 as an example for executing the self-backhaul network handover method.
- an apparatus 700 for switching a self-backhaul network includes: a first sending module 710, configured to send a first sending module 710 when switching is triggered.
- Two network handover requests are sent to the target CU node, the second network handover request includes at least the context information of the first network node, and the context information is the context information of the first network node when the handover is triggered.
- At least part of the information about the changed context information of the first network node included in the network handover request where the first network handover request is sent by the original CU node to the target CU node before the handover is triggered, and the first network handover request is sent to the target CU node by the original CU node.
- a network node is any network node in the IAB network to be handed over; the first receiving module 720 is configured to receive a second network handover response sent by the target CU node, where the second network handover response at least includes a second network handover response.
- the second reconfiguration information is generated by the target CU node according to the second network handover request; a configuration module 730, configured to configure the reconfiguration information based on the first reconfiguration information and the second reconfiguration information In the handover of the first network node from the original CU node to the target CU node, the first reconfiguration information is generated by the target CU node according to the first network handover request before the handover is triggered.
- the configuration module 730 is configured to at least one of the following: send a handover trigger notification to the target CU node, where the handover trigger notification is used to notify the target CU node of the first network Node information of the node; sending a handover trigger notification to the target CU node, where the handover trigger notification is used to notify the target CU node that the handover of the first network node is about to occur.
- the first sending module 710 is further configured to send target reconfiguration information to the first network node in the case of receiving the confirmation information fed back by the target CU node, the target reconfiguration information
- the configuration information is obtained by replacing or updating the first reconfiguration information with the second reconfiguration information.
- the configuration module 730 is further configured to configure the first network node from the original CU node to the target CU node based on the first reconfiguration information when a handover is triggered switch.
- the first sending module 710 is further configured to send handover initiation notification information to the first network node, where the handover initiation notification information is used to instruct the first network node to follow the cached The target reconfiguration information and/or the first reconfiguration information is switched.
- the handover initiation notification information is transmitted through F1 signaling, RRC signaling or BAP Control PDU signaling.
- the first sending module 710 is further configured to send the first network handover request to the target CU node when it is predicted that the IAB network handover needs to be performed, and the The first network handover request at least includes the context information of the first network node when the original CU node sends the first network handover request; the first receiving module 720 is further configured to receive a message sent by the target CU node The first network handover response includes the first reconfiguration information.
- the first network handover request further includes first information, which is used to indicate that the first network handover request is an early handover request; and/or the first network handover response further includes Including second information, the second information is used to indicate that the first network handover response is an early handover response.
- the first information includes a handover occurrence place and/or a handover occurrence time point, wherein the handover occurrence place and/or the handover occurrence time point are the original CU node according to the mobile IAB system
- the predetermined moving route, moving speed, and deployment information of candidate IAB hosts are predicted.
- the first reconfiguration information and the second reconfiguration information include RRC reconfiguration information; in the second network node
- the first reconfiguration information and the second reconfiguration information include the RRC reconfiguration information of the IAB-MT and/or the F1 connection reconfiguration message of the IAB-DU.
- the apparatus 800 includes: a second receiving module 810, configured to receive a trigger when the original CU node is triggered A second network handover request sent during handover, the second network handover request at least includes context information of the first network node, and the context information is the context information of the first network node when the handover is triggered, relative to the first network node.
- a network handover request includes at least part of the changed context information of the first network node, the first network handover request is sent by the original CU node to the target CU node before handover is triggered, and the first network handover request is sent by the original CU node to the target CU node.
- the first network node is any network node in the IAB network to be handed over;
- the second sending module 820 is configured to send a second network handover response to the original CU node, where the second network handover response includes a second reconfiguration information, the second reconfiguration information is generated by the target CU node according to the second network handover request.
- the second receiving module 810 is further configured to at least one of the following: receive a handover trigger notification sent by the original CU node, where the handover trigger notification is used to notify the target CU node of all node information of the first network node; receiving a handover trigger notification sent by the original CU node, where the handover trigger notification is used to notify the target CU node that the handover of the first network node is about to occur.
- the second sending module 820 is further configured to, in the case of receiving the handover trigger notification, feed back confirmation information to the original CU node, and/or configure the same as the first CU node.
- the second receiving module 810 is further configured to receive a first network handover request sent by the original CU node, where the first network handover request is when the original CU node predicts the need for Sent when the IAB network handover is performed, the first network handover request includes at least the context information of the first network node when the original CU node sends the first network handover request; the first network handover request
- the second sending module 820 is further configured to send a first network handover response to the original CU node, where the first network handover response includes first reconfiguration information, and the first reconfiguration information is sent by The target CU node is generated according to the first network handover request.
- the first network handover request further includes first information, which is used to indicate that the first network handover request is an early handover request; and/or the first network handover response further includes Including second information, the second information is used to indicate that the first network handover response is an early handover response.
- the first information includes a handover occurrence place and/or a handover occurrence time point, wherein the handover occurrence place and/or the handover occurrence time point are the original CU node according to the mobile IAB system
- the predetermined moving route, moving speed, and deployment information of candidate IAB hosts are predicted.
- the first reconfiguration information and the second reconfiguration information include RRC reconfiguration information; in the second network node
- the first reconfiguration information and the second reconfiguration information include the RRC reconfiguration information of the IAB-MT and/or the F1 connection reconfiguration message of the IAB-DU.
- the switching apparatus 700 or 800 of the self-backhaul network in this embodiment of the present application may be an apparatus, an apparatus having an operating system or an electronic device, or may be a component, an integrated circuit, or a chip in a terminal.
- the apparatus or electronic device may be a mobile terminal or a non-mobile terminal.
- the mobile terminal may include, but is not limited to, the types of terminals 11 listed above, and the non-mobile terminal may be a server, a network attached storage (NAS), a personal computer (personal computer, PC), a television ( television, TV), teller machine, or self-service machine, etc., which are not specifically limited in the embodiments of the present application.
- the switching device 700 or 800 of the self-backhaul network provided in the embodiment of the present application can implement each process implemented by the method embodiments in FIG. 3 to FIG. 6 and achieve the same technical effect. To avoid repetition, details are not described here.
- An embodiment of the present application further provides a network side device, including a processor and a communication interface, where the processor is configured to implement the steps in the foregoing method embodiments 300-600.
- This network-side device embodiment corresponds to the above-mentioned network-side device method embodiment, and each implementation process and implementation manner of the above-mentioned method embodiment can be applied to this network-side device embodiment, and can achieve the same technical effect.
- the network device 900 includes: an antenna 901 , a radio frequency device 902 , and a baseband device 903 .
- the antenna 901 is connected to the radio frequency device 902 .
- the radio frequency device 902 receives information through the antenna 901, and sends the received information to the baseband device 903 for processing.
- the baseband device 903 processes the information to be sent and sends it to the radio frequency device 902
- the radio frequency device 902 processes the received information and sends it out through the antenna 901 .
- the above-mentioned frequency band processing apparatus may be located in the baseband apparatus 903 , and the method performed by the network side device in the above embodiments may be implemented in the baseband apparatus 903 .
- the baseband apparatus 903 includes a processor 904 and a memory 905 .
- the baseband device 903 may include, for example, at least one baseband board on which multiple chips are arranged. As shown in FIG. 9 , one of the chips is, for example, the processor 904 and is connected to the memory 905 to call the program in the memory 905 to execute The network devices shown in the above method embodiments operate.
- the baseband device 903 may further include a network interface 906 for exchanging information with the radio frequency device 902, and the interface is, for example, a common public radio interface (CPRI for short).
- CPRI common public radio interface
- the network-side device in the embodiment of the present invention further includes: an instruction or program stored in the memory 905 and executable on the processor 904, and the processor 904 invokes the instruction or program in the memory 905 to execute the instruction or program shown in FIG. 7 or FIG. 8 . In order to avoid repetition, it is not repeated here.
- An embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, each process of the above-mentioned embodiment of the method for switching a self-backhaul network is implemented, And can achieve the same technical effect, in order to avoid repetition, it is not repeated here.
- 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 a computer read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a magnetic disk or an optical disk, and the like.
- An embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a program or an instruction to implement the above self-backhaul network switching
- the chip includes a processor and a communication interface
- the communication interface is coupled to the processor
- the processor is configured to run a program or an instruction to implement the above self-backhaul network switching
- the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip, a system-on-chip, or a system-on-a-chip, or the like.
- the embodiments of the present application also provide a computer program product, the computer program product includes a processor, a memory, and a program or instruction stored on the memory and executable on the processor, the program or instruction being When the processor is executed, each process of the above-mentioned embodiment of the switching method for a self-backhaul network can be realized, and the same technical effect can be achieved. In order to avoid repetition, details are not repeated here.
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Abstract
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Claims (38)
- 一种自回传网络的切换方法,由原CU节点执行,所述方法包括:在触发切换的情况下,发送第二网络切换请求给目标CU节点,所述第二网络切换请求中至少包括第一网络节点的上下文信息,所述上下文信息是触发切换时的所述第一网络节点的上下文信息,相对于第一网络切换请求中包括的所述第一网络节点的上下文信息发生变化的至少部分信息,所述第一网络切换请求是在触发切换之前,由所述原CU节点发送给所述目标CU节点,所述第一网络节点是待切换的IAB网络中的任一网络节点;接收所述目标CU节点发送的第二网络切换响应,所述第二网络切换响应中至少包括第二重配置信息,所述第二重配置信息由所述目标CU节点根据所述第二网络切换请求生成;基于第一重配置信息和所述第二重配置信息配置所述第一网络节点从所述原CU节点到目标CU节点的切换,所述第一重配置信息是在触发切换之前,由所述目标CU节点根据所述第一网络切换请求生成。
- 如权利要求1所述的方法,其中,基于第一重配置信息和所述第二重配置信息,配置所述第一网络节点从所述原CU节点到目标CU节点的切换,包括以下至少一项:发送切换触发通知给所述目标CU节点,所述切换触发通知用于向所述目标CU节点通知所述第一网络节点的节点信息;发送切换触发通知给所述目标CU节点,所述切换触发通知用于向所述目标CU节点通知所述第一网络节点的切换即将发生。
- 根据权利要求2所述的方法,其中,发送切换触发通知给所述目标CU节点之后,所述方法还包括:在接收到所述目标CU节点反馈的确认信息的情况下,发送目标重配置信息给第一网络节点,所述目标重配置信息是利用所述第二重配置信息对所述第一重配置信息进行替代或更新得到。
- 如权利要求1所述的方法,其中,所述方法还包括:在触发切换的情况下,基于所述第一重配置信息,配置所述第一网络节点从所述原CU节点到目标CU节点的切换。
- 如权利要求1-4中任一项所述的方法,其中,所述方法还包括:发送切换启动通知信息给所述第一网络节点,所述切换启动通知信息用于指示所述第一网络节点按照缓存的目标重配置信息和/或所述第一重配置信息进行切换。
- 如权利要求5所述的方法,其中,所述切换启动通知信息通过F1信令、RRC信令或BAP Control PDU信令传输。
- 如权利要求1-6中任一项所述的方法,其中,在触发切换的情况下,发送第二网络切换请求给目标CU节点之前,所述方法还包括:在预测到需要进行所述IAB网络切换的情况下,发送所述第一网络切换请求给所述目标CU节点,所述第一网络切换请求至少包括所述原CU节点在发送所述第一网络切换请求时的所述第一网络节点的上下文信息;接收所述目标CU节点发送的第一网络切换响应,所述第一网络切换响应包括所述第一重配置信息。
- 如权利要求7所述的方法,其中,所述第一网络切换请求中还包括第一信息,用于指示所述第一网络切换请求为早期切换请求;和/或所述第一网络切换响应中还包括第二信息,所述第二信息用于指示所述第一网络切换响应为早期切换响应。
- 如权利要求8所述的方法,其中,所述第一信息包括切换发生地点和/或切换发生时间点,其中,所述切换发生地点和/或切换发生时间点是所述原CU节点根据移动IAB系统的预定移动路线、移动速度以及备选IAB宿主的部署信息预测得到。
- 如权利要求7所述的方法,其中,所述第一网络切换请求的发送时间与所述第二网络切换请求的发送时间之间具有预定时间间隔。
- 如权利要求1-10中任一项所述的方法,其中,在所述第一网络节点为UE的情况下,所述第一重配置信息和所述第二重配置信息包括RRC重配置信息;在所述第二网络节点为IAB节点的情况下,所述第一重配置信息和所述第二重配置信息包括IAB-MT的RRC重配置信息和/或IAB-DU的F1连接重配置消息。
- 一种自回传网络的切换方法,由目标CU节点执行,所述方法包括:接收原CU节点在触发切换时发送的第二网络切换请求,所述第二网络切换请求中至少包括第一网络节点的上下文信息,所述上下文信息是触发切换时的所述第一网络节点的上下文信息,相对于第一网络切换请求中包括的所述第一网络节点的上下文信息发生变化的至少部分信息,所述第一网络切换请求是在触发切换之前,由所述原CU节点发送给所述目标CU节点,所述第一网络节点是待切换的IAB网络中的任一网络节点;发送第二网络切换响应给所述原CU节点,所述第二网络切换响应包括第二重配置信息,所述第二重配置信息由所述目标CU节点根据所述第二网络切换请求生成。
- 如权利要求12所述的方法,其中,发送第二网络切换响应给所述原CU节点之后,所述方法还包括以下至少一项:接收所述原CU节点发送的切换触发通知,所述切换触发通知用于向所述目标CU节点通知所述第一网络节点的节点信息;接收所述原CU节点发送的切换触发通知,所述切换触发通知用于向所述目标CU节点通知所述第一网络节点的切换即将发生。
- 如权利要求13所述的方法,其中,接收所述原CU节点发送的切换触发通知之后,所述方法还包括:在接收到所述切换触发通知的情况下,反馈确认信息给所述原CU节点,和/或配置与所述第一网络节点对应的网络切换资源。
- 如权利要求12所述的方法,其中,接收原CU节点发送的第二网络切换请求之前,所述方法还包括:接收所述原CU节点发送的第一网络切换请求,所述第一网络切换请求是所述原CU节点在预测到需要进行所述IAB网络切换的情况下发送的,所述第一网络切换请求至少包括所述原CU节点在发送所述第一网络切换请求时的所述第一网络节点的上下文信息;发送第一网络切换响应给所述原CU节点,所述第一网络切换响应包括第一重配置信息,所述第一重配置信息是是在触发切换之前,由所述目标CU节点根据所述第一网络切换请求生成。
- 如权利要求15所述的方法,其中,所述第一网络切换请求中还包括第一信息,用于指示所述第一网络切换请求为早期切换请求;和/或所述第一网络切换响应中还包括第二信息,所述第二信息用于指示所述第一网络切换响应为早期切换响应。
- 如权利要求16所述的方法,其中,所述第一信息包括切换发生地点和/或切换发生时间点,其中,所述切换发生地点和/或切换发生时间点是所述原CU节点根据移动IAB系统的预定移动路线、移动速度以及备选IAB宿主的部署信息预测得到。
- 如权利要求12-17中任一项所述的方法,其中,在所述第一网络节点为UE的情况下,所述第一重配置信息和所述第二重配置信息包括RRC重配置信息;在所述第二网络节点为IAB节点的情况下,所述第一重配置信息和所述第二重配置信息包括IAB-MT的RRC重配置信息和/或IAB-DU的F1连接重配置消息。
- 一种自回传网络的切换装置,所述装置包括:第一发送模块,用于在触发切换的情况下,发送第二网络切换请求给目标CU节点,所述第二网络切换请求中至少包括第一网络节点的上下文信息, 所述上下文信息是触发切换时的所述第一网络节点的上下文信息,相对于第一网络切换请求中包括的第一网络节点的上下文信息发生变化的至少部分信息,所述第一网络切换请求是在触发切换之前,由原CU节点发送给所述目标CU节点,所述第一网络节点是待切换的IAB网络中的任一网络节点;第一接收模块,用于接收所述目标CU节点发送的第二网络切换响应,所述第二网络切换响应中至少包括第二重配置信息,所述第二重配置信息由所述目标CU节点根据所述第二网络切换请求生成;配置模块,用于基于第一重配置信息和所述第二重配置信息配置所述第一网络节点从所述原CU节点到目标CU节点的切换,所述第一重配置信息是在触发切换之前,由所述目标CU节点根据所述第一网络切换请求生成。
- 如权利要求19所述的装置,其中,所述配置模块用于以下至少一项:发送切换触发通知给所述目标CU节点,所述切换触发通知用于向所述目标CU节点通知所述第一网络节点的节点信息;发送切换触发通知给所述目标CU节点,所述切换触发通知用于向所述目标CU节点通知所述第一网络节点的切换即将发生。
- 根据权利要求20所述的装置,其中,所述第一发送模块还用于在接收到所述目标CU节点反馈的确认信息的情况下,发送目标重配置信息给第一网络节点,所述目标重配置信息是利用所述第二重配置信息对所述第一重配置信息进行替代或更新得到。
- 如权利要求19所述的装置,其中,所述配置模块还用于在触发切换的情况下,基于所述第一重配置信息,配置所述第一网络节点从所述原CU节点到目标CU节点的切换。
- 如权利要求19-22中任一项所述的装置,其中,所述第一发送模块还用于发送切换启动通知信息给所述第一网络节点,所述切换启动通知信息用于指示所述第一网络节点按照缓存的目标重配置信息和/或所述第一重配置信息进行切换。
- 如权利要求23所述的装置,其中,所述切换启动通知信息通过F1信令、RRC信令或BAP Control PDU信令传输。
- 如权利要求19-24中任一项所述的装置,其中,所述第一发送模块还用于在预测到需要进行所述IAB网络切换的情况下,发送所述第一网络切换请求给所述目标CU节点,所述第一网络切换请求至少包括所述原CU节点在发送所述第一网络切换请求时的所述第一网络节点的上下文信息;所述第一接收模块还用于接收所述目标CU节点发送的第一网络切换响应,所述第一网络切换响应包括所述第一重配置信息。
- 如权利要求25所述的装置,其中,所述第一网络切换请求中还包括第一信息,用于指示所述第一网络切换请求为早期切换请求;和/或所述第一网络切换响应中还包括第二信息,所述第二信息用于指示所述第一网络切换响应为早期切换响应。
- 如权利要求26所述的装置,其中,所述第一信息包括切换发生地点和/或切换发生时间点,其中,所述切换发生地点和/或切换发生时间点是所述原CU节点根据移动IAB系统的预定移动路线、移动速度以及备选IAB宿主的部署信息预测得到。
- 如权利要求25所述的装置,其中,所述第一网络切换请求的发送时间与所述第二网络切换请求的发送时间之间具有预定时间间隔。
- 如权利要求19-28中任一项所述的装置,其中,在所述第一网络节点为UE的情况下,所述第一重配置信息和所述第二重配置信息包括RRC重配置信息;在所述第二网络节点为IAB节点的情况下,所述第一重配置信息和所述第二重配置信息包括IAB-MT的RRC重配置信息和/或IAB-DU的F1连接重配置消息。
- 一种自回传网络的切换装置,所述装置包括:第二接收模块,用于接收原CU节点在触发切换时发送的第二网络切换 请求,所述第二网络切换请求中至少包括第一网络节点的上下文信息,所述上下文信息是触发切换时的所述第一网络节点的上下文信息,相对于第一网络切换请求中包括的所述第一网络节点的上下文信息发生变化的至少部分信息,所述第一网络切换请求是在触发切换之前,由所述原CU节点发送给目标CU节点,所述第一网络节点是待切换的IAB网络中的任一网络节点;第二发送模块,用于发送第二网络切换响应给所述原CU节点,所述第二网络切换响应包括第二重配置信息,所述第二重配置信息由所述目标CU节点根据所述第二网络切换请求生成。
- 如权利要求30所述的装置,其中,所述第二接收模块还用于以下至少一项:接收所述原CU节点发送的切换触发通知,所述切换触发通知用于向所述目标CU节点通知所述第一网络节点的节点信息;接收所述原CU节点发送的切换触发通知,所述切换触发通知用于向所述目标CU节点通知所述第一网络节点的切换即将发生。
- 如权利要求31所述的装置,其中,所述第二发送模块还用于在接收到所述切换触发通知的情况下,反馈确认信息给所述原CU节点,和/或配置与所述第一网络节点对应的网络切换资源。
- 如权利要求31所述的装置,其中,所述第二接收模块还用于接收所述原CU节点发送的第一网络切换请求,所述第一网络切换请求是所述原CU节点在预测到需要进行所述IAB网络切换的情况下发送的,所述第一网络切换请求至少包括所述原CU节点在发送所述第一网络切换请求时的所述第一网络节点的上下文信息;所述第二发送模块,还用于发送第一网络切换响应给所述原CU节点,所述第一网络切换响应包括第一重配置信息,所述第一重配置信息是是在触发切换之前,由所述目标CU节点根据所述第一网络切换请求生成。
- 如权利要求33所述的装置,其中,所述第一网络切换请求中还包括 第一信息,用于指示所述第一网络切换请求为早期切换请求;和/或所述第一网络切换响应中还包括第二信息,所述第二信息用于指示所述第一网络切换响应为早期切换响应。
- 如权利要求34所述的装置,其中,所述第一信息包括切换发生地点和/或切换发生时间点,其中,所述切换发生地点和/或切换发生时间点是所述原CU节点根据移动IAB系统的预定移动路线、移动速度以及备选IAB宿主的部署信息预测得到。
- 如权利要求30-35中任一项所述的装置,其中,在所述第一网络节点为UE的情况下,所述第一重配置信息和所述第二重配置信息包括RRC重配置信息;在所述第二网络节点为IAB节点的情况下,所述第一重配置信息和所述第二重配置信息包括IAB-MT的RRC重配置信息和/或IAB-DU的F1连接重配置消息。
- 一种网络侧设备,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11任一项所述的自回传网络的切换方法的步骤,或者,实现如权利要求12至18任一项所述的自回传网络的切换方法的步骤。
- 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11任一项所述的自回传网络的切换方法的步骤,或者,实现如权利要求12至18任一项所述的自回传网络的切换方法的步骤。
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