CN114071602B

CN114071602B - Node switching configuration method and device

Info

Publication number: CN114071602B
Application number: CN202010774017.8A
Authority: CN
Inventors: 王达; 曾二林
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2020-08-04
Filing date: 2020-08-04
Publication date: 2023-05-26
Anticipated expiration: 2040-08-04
Also published as: CN114071602A

Abstract

The invention provides a node switching configuration method and device, which solve the problems of large transmission service time delay or transmission service interruption caused by IAB nodes when switching is executed in the prior art. The method comprises the following steps: the method comprises the steps that a centralized unit acquires configuration information of an Integrated Access Backhaul (IAB) node, wherein the configuration information is used for the IAB node to execute configuration during or after switching; the centralized unit sends the configuration information to the IAB node. The invention can lead the IAB node to obtain the configuration information in advance, thereby configuring the IAB node according to the configuration information in advance in the switching process, reducing the switching time delay of the transmission service and reducing the probability of the interruption of the transmission service.

Description

Node switching configuration method and device

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for configuring node switching.

Background

The IAB (Integrated Access and Backhaul) integrated access backhaul) network technology achieves the purpose of expanding the coverage of a base station by relaying wireless signals between a plurality of nodes. Is a network networking mode for solving the coverage problem of the base station in the future 5G.

In the existing IAB network topology, one IAB node (IAB node) is composed of two parts, one part is a DU part in an IAB MT (IAB Mobile Termination, IAB mobile terminal) pair, to which a base station or an IAB node is connected, and the base station or the IAB node is called a parent node thereof; the other part is the MT part of an IAB DU (IAB Distributed Unit, IAB distribution unit) to a downlink UE (User Equipment) or an IAB node, which is called its child node.

With further development of the IAB technology, the IAB node is also movable, for example, mounted on a car or a train. For normal traffic transmission, the IAB node can implement a handover between parent nodes. However, when the IAB node performs handover, there is a problem in that a delay of transmission service is large or the transmission service is interrupted.

Disclosure of Invention

The invention aims to provide a node switching configuration method and device, which are used for solving the problems of large transmission service time delay or transmission service caused by IAB nodes when switching is executed in the prior art.

In order to achieve the above object, an embodiment of the present invention provides a node switching configuration method, including:

The method comprises the steps that a centralized unit acquires configuration information of an Integrated Access Backhaul (IAB) node, wherein the configuration information is used for the IAB node to execute configuration during or after switching;

the centralized unit sends the configuration information to the IAB node.

Wherein, the content of the configuration information comprises at least one of the following:

identification of the target cell;

returning configuration information of an adaptation protocol (BAP) layer;

IP address configuration information;

cell frequency configuration information.

The obtaining mode of the configuration information of the IAB node includes at least one of the following:

generated by the concentration unit;

obtained by the target concentration unit;

obtained by operating the maintenance management device;

obtained by pre-configuration.

The configuration information of the IAB node is obtained through a target centralized unit;

the obtaining the configuration information of the integrated access backhaul IAB node includes:

receiving configuration information of the IAB node sent by the target centralized unit;

or,

sending a first request message to the target centralized unit, wherein the first request message requests to obtain configuration information of the IAB node;

and receiving configuration information of the IAB node sent by the target centralized unit according to the first request message.

The configuration information of the IAB node is obtained through operation, maintenance and management equipment;

receiving configuration information of an IAB node sent by the operation maintenance management equipment;

or,

sending a second request message for requesting to obtain the configuration information of the IAB node to the operation maintenance management equipment;

and receiving the configuration information of the IAB node sent by the operation maintenance management equipment according to the second request message.

The configuration information is in one-to-one correspondence with a plurality of cells adjacent to the cell where the IAB node is currently located.

Wherein the sending the configuration information to the IAB node includes:

and sending the configuration information to the IAB node through F1 interface signaling and/or Radio Resource Control (RRC) signaling.

The configuration information comprises first configuration information and second configuration information, the IAB node comprises a first IAB node and a second IAB node, and the second IAB node is a descendant node of the first IAB node;

the first configuration information is used for the first IAB node to execute configuration during or after switching, and the second configuration information is used for the second IAB node to execute configuration during or after switching;

The sending the configuration information to the IAB node includes:

transmitting the first configuration information and the second configuration information to the first IAB node; or,

and sending the first configuration information to the first IAB node, and sending the second configuration information to the second IAB node.

Wherein the method further comprises:

sending a third request message carrying the identifier of the target cell to the IAB node under the condition that the IAB node meets the first handover triggering condition, wherein the third request message is a handover request message or an IAB node information modification request message; and determining corresponding configuration information according to the identification of the target cell when or after the IAB node is switched, and executing configuration.

Wherein the method further comprises:

sending a fourth request message carrying the identifier of the target cell to the second IAB node under the condition that the first IAB node meets a second handover triggering condition, wherein the fourth request message is a handover request message or an IAB node information modification request message; and when or after the first IAB node is switched, the second IAB node determines corresponding configuration information according to the identification of the target cell, and executes configuration.

Wherein the method further comprises:

and receiving a first response message sent by the IAB node, wherein the first response message is a switching response message or an IAB node information modification response message.

In order to achieve the above object, an embodiment of the present invention further provides a node switching configuration method, including:

the integrated access backhaul IAB node receives configuration information sent by a centralized unit;

and the IAB node executes configuration according to the configuration information when or after switching.

identification of the target cell;

returning configuration information of an adaptation protocol (BAP) layer;

IP address configuration information;

cell frequency configuration information.

The configuration information sent by the receiving centralized unit includes:

and receiving the configuration information sent by the centralized unit through F1 interface signaling and/or Radio Resource Control (RRC) signaling.

The configuration information comprises first configuration information and second configuration information, wherein the first configuration information is used for a first IAB node to execute configuration during or after switching, and the second configuration information is used for a second IAB node to execute configuration during or after switching; the second IAB node is a descendant node of the first IAB node;

The configuration information sent by the receiving centralized unit includes:

receiving the first configuration information sent by the centralized unit or receiving the first configuration information and the second configuration information sent by the centralized unit under the condition that the IAB node is used as the first IAB node;

or,

and receiving the second configuration information sent by the centralized unit under the condition that the IAB node is used as the second IAB node.

Wherein the method further comprises:

and sending, to the second IAB node, indication information for indicating the second IAB node to perform configuration when or after the first IAB node is switched, where the indication information includes at least one of the following information:

identification of the target cell;

the second configuration information.

The IAB node performs configuration according to the configuration information during or after handover, including:

receiving a third request message carrying the identifier of the target cell and sent by the centralized unit, wherein the third request message is a switching request message or an IAB node information modification request message;

And when or after the IAB node is switched, determining configuration information corresponding to the identification of the target cell in the configuration information according to the identification of the target cell, and executing configuration.

Wherein the method further comprises:

and sending a first response message to the centralized unit, wherein the first response message is a handover response message or an IAB node information modification response message.

In order to achieve the above object, an embodiment of the present invention further provides a node switching configuration device, including: memory, transceiver, processor: a memory for storing program instructions; a transceiver for transceiving data under control of the processor; a processor for reading the program instructions in the memory, the transceiver performing the following operations:

acquiring configuration information of an Integrated Access Backhaul (IAB) node, wherein the configuration information is used for the IAB node to execute configuration during or after switching;

and sending the configuration information to the IAB node.

identification of the target cell;

returning configuration information of an adaptation protocol (BAP) layer;

IP address configuration information;

cell frequency configuration information.

generated by the concentration unit;

obtained by the target concentration unit;

obtained by operating the maintenance management device;

obtained by pre-configuration.

The configuration information of the IAB node is obtained through a target centralized unit; the transceiver specifically comprises:

or,

The configuration information of the IAB node is obtained through operation, maintenance and management equipment; the transceiver specifically comprises:

or,

Wherein, the transceiver specifically includes:

the transceiver specifically comprises:

Wherein, the transceiver specifically includes:

In order to achieve the above object, an embodiment of the present invention further provides a node switching configuration device, including:

the system comprises an acquisition module, a configuration module and a configuration module, wherein the acquisition module is used for acquiring configuration information of an Integrated Access Backhaul (IAB) node, and the configuration information is used for the IAB node to execute configuration during or after switching;

and the first sending module is used for sending the configuration information to the IAB node.

In order to achieve the above object, an embodiment of the present invention further provides a node switching configuration device, including: memory, transceiver, processor: a memory for storing program instructions; a transceiver for transceiving data under control of the processor; a processor for reading the program instructions in the memory, the transceiver for performing the following operations:

Receiving configuration information sent by a centralization unit;

the processor performs the following operations:

identification of the target cell;

returning configuration information of an adaptation protocol (BAP) layer;

IP address configuration information;

cell frequency configuration information.

Wherein, the transceiver specifically includes:

the transceiver specifically comprises:

Or,

Wherein, the transceiver specifically includes:

identification of the target cell;

the second configuration information.

Wherein, the transceiver specifically includes:

the processor specifically comprises:

Wherein, the transceiver specifically includes:

the second receiving module is used for receiving the configuration information sent by the centralized unit;

and the configuration module is used for executing configuration according to the configuration information when or after the IAB node is switched.

In order to achieve the above object, an embodiment of the present invention further provides a processor-readable storage medium storing program instructions for causing the processor to execute the steps of the above-described node switch configuration method.

The technical scheme of the invention has at least the following beneficial effects:

in the above technical solution of the embodiment of the present invention, configuration information of an integrated access backhaul IAB node is obtained through a centralized unit, where the configuration information is used for the IAB node to perform configuration during or after handover; the configuration information is sent to the IAB node, so that the IAB node can obtain the configuration information in advance, the IAB node is configured according to the configuration information in advance in the switching process, the switching time delay of transmission service is reduced, and the probability of occurrence of transmission service interruption is reduced.

Drawings

FIG. 1 is a schematic diagram of a prior art IAB network topology;

fig. 2 is a schematic flow chart of a node switching configuration method according to an embodiment of the present invention;

FIG. 3 is a second flow chart of a node switch configuration method according to an embodiment of the invention;

FIG. 4 is a third flow chart of a node switch configuration method according to an embodiment of the invention;

FIG. 5 is a flowchart of a node switch configuration method according to an embodiment of the present invention;

FIG. 6 is a block diagram of a node switch configuration device according to an embodiment of the present invention;

fig. 7 is a schematic block diagram of a node switch configuration device according to an embodiment of the present invention;

FIG. 8 is a second block diagram of a node switch configuration device according to an embodiment of the present invention;

fig. 9 is a second block diagram of a node switch configuration device according to an embodiment of the present invention.

Detailed Description

In the embodiment of the invention, the term "and/or" describes the association relation of the association objects, which means that three relations can exist, for example, a and/or B can be expressed as follows: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.

The term "plurality" in the embodiments of the present application means two or more, and other adjectives are similar thereto.

The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

It should be noted that the method of the present invention is applicable to an IAB network. For ease of understanding, the network is described in detail below in connection with fig. 1.

Fig. 1 is a diagram of an IAB network topology, in an IAB network deployment, comprised of an IAB node (IAB host node or central control node), an IAB node and a UE. The IAB node is used for connecting a core network, transmitting information of the IAB node and the UE back to the core network, and transmitting information of the core network to the IAB node and the UE. The IAB donor is also responsible for managing the IAB node in the entire IAB network.

The IAB node is responsible for relaying information of the UE to the IAB node through a radio link (Uu interface), and relaying information of the IAB node to the UE. The IAB nodes and the IAB donor are connected through a wireless link, namely Uu interface.

The relay function of the IAB node is implemented by a BAP layer (Backhaul Adaptation Protocol layer ) in the IAB node.

In fig. 1, IAB node 1 is a parent node of IAB node 2, IAB node 3 is a child node of IAB node 2, and IAB node 3 is a child node of IAB node 1.

As shown in fig. 2, one of the flow diagrams of the node switching configuration method provided in the embodiment of the present invention is applied to a centralized unit, and includes:

step 201: the method comprises the steps that a centralized unit acquires configuration information of an Integrated Access Backhaul (IAB) node, wherein the configuration information is used for the IAB node to execute configuration during or after switching;

here, the centralized unit refers to a CU of IAB donor.

Step 202: the centralized unit sends the configuration information to the IAB node.

According to the node switching configuration method, configuration information of the integrated access backhaul IAB node is obtained through the centralized unit, and the configuration information is used for the IAB node to execute configuration during or after switching; the configuration information is sent to the IAB node, so that the IAB node can obtain the configuration information in advance, the IAB node is configured according to the configuration information in advance in the switching process, the switching time delay of transmission service is reduced, and the probability of occurrence of transmission service interruption is reduced.

Optionally, the content of the configuration information includes at least one of:

identification of the target cell;

returning configuration information of an adaptation protocol (BAP) layer;

IP address configuration information;

cell frequency configuration information.

The identification of the target Cell includes PCI (Physical Cell Identity, cell identification) of the target Cell and/or CGI (Global Cell ID) of the target Cell. The present invention is not limited to this example, and other identifiers that can be used to identify cells are only possible.

The target cell identifier may be used to identify a correspondence between the cell to which the IAB node is switched and the IAB node configuration information. That is, at the time of or after the subsequent IAB node handover, the corresponding configuration information may be determined by the identity of the target cell, and the configuration may be performed.

Optionally, the obtaining manner of the configuration information of the IAB node includes at least one of the following:

mode one: generated by the concentration unit;

mode two: obtained by the target concentration unit;

mode three: obtained by operating the maintenance management device;

mode four: obtained by pre-configuration.

It should be noted that, the IAB node handover specifically refers to that the IAB node is handed over from a source parent node to a target parent node. An IAB node handover involves two handover scenarios. The IAB node is switched from the source parent node to the target parent node, but the connected donor CU is not changed, and only different donor DUs below the donor CU are changed, and the switching is intra-CU switching; the other is that the IAB node is switched from the source parent node to the target parent node, and the connected donor CU is changed, namely the connected donor CU is switched from the source donor CU to the target donor CU, and the switching is an inter-CU switching.

Here, the obtaining manner of the configuration information of the IAB node is generated by the centralized unit, that is, the centralized unit generates the configuration information of the IAB node by itself, and the obtaining manner is applicable to an intra-CU switching scenario.

Since in the intra-CU handover scenario, the CU does not handover, during the IAB node handover procedure, the IAB node is handed over from one donor DU to another donor DU, where both donor DUs are connected to the same CU, the CU may generate configuration information for the IAB node to handover between donor DUs.

As an optional implementation manner, the configuration information of the IAB node is obtained by a target centralized unit;

the target unit is the target donor CU. The configuration information of the IAB node is obtained through the target centralized unit and is suitable for an inter-CU switching scene.

In the inter-CU handover scenario, the IAB node is handed over from the source CU to the target CU during the IAB node handover, and thus the source CU needs to obtain the IAB node configuration information at the target CU through the target CU. The specific method for obtaining the configuration information of the IAB node, that is, step 201 of the method of the present invention may specifically include:

Or,

That is, the method of obtaining the configuration information of the IAB node may be that the target CU directly transmits the configuration information of the IAB node to the source CU; alternatively, the source CU requests configuration information of the IAB node from the target CU, and when the target CU receives the request, the configuration information is sent to the source CU.

As an optional implementation manner, the configuration information of the IAB node is obtained through operation, maintenance and management equipment;

it should be noted that, the configuration information of the IAB node obtained by the OAM (Operation Administration Maintenance, operation maintenance management) device is applicable to both the intra-CU switching scenario and the inter-CU switching scenario, i.e., both switching scenarios are applicable.

The specific method for obtaining the configuration information of the IAB node, that is, step 201 of the method of the present invention may specifically include:

or,

That is, the method for obtaining the configuration information of the IAB node may be to directly send the configuration information of the IAB node to the source CU by the OAM device; alternatively, the source CU requests configuration information of the IAB node from the OAM device, and when the OAM device receives the request, the configuration information is sent to the source CU.

Here, the method of obtaining configuration information of the IAB node through pre-configuration is also applicable to an intra-CU switching scenario and an inter-CU switching scenario, that is, both switching scenarios are applicable.

It should be noted that, since the IAB node may perform intra-CU handover or inter-CU handover, that is, two scenarios exist simultaneously, the first and second modes may exist simultaneously, that is, the CU needs to generate configuration information of the IAB node, and also needs to obtain the configuration information of the IAB node through the target CU, and configure both the configuration information to the IAB node, which are used for intra-CU handover and inter-CU handover of the IAB node, respectively. Of course, the third mode and the fourth mode can exist simultaneously with the first mode and the second mode, and are complemented by one acquisition method.

During the movement, an IAB node has a plurality of cells in the vicinity and may be handed over to one of the cells in the vicinity. However, since the configuration information is sent to the IAB before the IAB is switched, a plurality of cells nearby need to be considered, and the switching to a certain cell is possible, therefore, optionally, the configuration information has a plurality of groups, and the plurality of groups of configuration information corresponds to a plurality of cells adjacent to the cell where the IAB node is currently located one by one.

For example, the CU sends multiple sets (sets) of configuration information to the IAB node, corresponding to each cell in the vicinity, where the configuration information may be the configuration information of intra-CU handover or the configuration information of inter-CU handover.

For example, there are 2 cells near the IAB node, cell 1 and cell 2. If the IAB node is switched to the cell 1 to be switched to the intra-CU, the CU generates configuration information of the IAB node corresponding to the cell 1, or obtains the configuration information of the IAB node corresponding to the cell 1 through OAM equipment or pre-configuration; if the handover of the IAB node to the cell 2 is an inter-CU handover, the CU obtains configuration information of the IAB node corresponding to the cell 2 through the target CU, or obtains configuration information of the IAB node corresponding to the cell 2 through OAM equipment or pre-configuration. Therefore, the CU will send two sets of configuration information to the IAB node, corresponding to cell 1 and cell 2, respectively.

It should be noted that, after the configuration information of the IAB node is obtained, what manner to send the configuration information of the IAB node, as an optional implementation manner, the method step 202 of the embodiment of the present invention may specifically include:

Here, the CU may send all configuration information to the IAB node through F1 interface signaling; or, all configuration information can be sent to the IAB node through RRC signaling; or, part of the configuration information is sent to the IAB node through F1 interface signaling, and the other part of the configuration information is sent to the IAB node through RRC signaling.

For example, cell frequency configuration information, PCI, CGI are signaled via F1 interface; and sending BAP configuration information and IP address configuration information through RRC signaling.

It should be noted that, in the embodiment of the present invention, the configuration information is sent to the IAB node before the IAB node is switched, so that the configuration information is only sent to the IAB node, and the actual configuration is not performed until the IAB node is switched, and the corresponding configuration is performed according to the configuration information corresponding to the cell switched by the IAB node.

For intra-CU handover scenarios and inter-CU handover scenarios, it should be noted that after the IAB node is handed over, both its child nodes and UEs below the child nodes are handed over. The configuration information of the IAB node may further include configuration information of a descendant node of the IAB node in addition to the configuration information of the node, that is, optionally, the configuration information includes first configuration information and second configuration information, the IAB node includes a first IAB node and a second IAB node, and the second IAB node is a descendant node of the first IAB node;

the sending the configuration information to the IAB node includes:

Here, the first configuration information may have multiple groups, where multiple groups of the first configuration information are in one-to-one correspondence with multiple cells adjacent to the cell where the first IAB node is currently located. Of course, the first configuration information may also have only one set, where the set of first configuration information corresponds to a cell after the parent node of the first IAB node is handed over, that is, the set of first configuration information corresponds to an identifier of the target cell where the first IAB node determines to be handed over.

The second configuration information may have multiple groups, where multiple groups of second configuration information are in one-to-one correspondence with multiple cells adjacent to the cell where the first IAB node is currently located. Of course, there may be only one set of second configuration information, where the set of second configuration information corresponds to a cell after the parent node of the first IAB node is handed over, that is, the set of second configuration information corresponds to an identifier of the target cell determined to be handed over by the first IAB node.

It should be noted that the specific configuration information of the first configuration information is different from the specific configuration information of the second configuration information.

As an alternative implementation manner, the method of the embodiment of the present invention may further include:

It should be noted that, the third request message is used to trigger the IAB node to perform handover.

Based on the embodiment that the IAB node includes the first IAB node and the second IAB node, where the second IAB node is a descendant node of the first IAB node, as an optional implementation manner, the method of the embodiment of the present invention may further include:

It should be noted that, in this step, the central unit CU may directly send the request message (i.e., the fourth request message) to the descendant node of the first IAB node (i.e., the second IAB node) when the first IAB node meets the second handover triggering condition, that is, the CU triggers the descendant node of the first IAB node to perform configuration. Here, the identity of the target cell is the same as the identity of the target cell after the first IAB node is handed over.

As shown in fig. 3, a second flow chart of a node switching configuration method according to an embodiment of the present invention is applied to an integrated access backhaul IAB node, and includes:

step 301, integrating configuration information sent by an access backhaul IAB node receiving centralized unit;

step 302, the IAB node performs configuration according to the configuration information when or after the handover.

According to the node switching configuration method, the configuration information sent by the centralized unit is received through the IAB node, and the configuration information is used for the IAB node to execute configuration during or after switching, so that the IAB node obtains the configuration information in advance, and therefore the configuration is executed in advance according to the configuration information during or after switching, switching time delay of transmission service is reduced, and the probability of occurrence of transmission service interruption is reduced.

identification of the target cell;

returning configuration information of an adaptation protocol (BAP) layer;

IP address configuration information;

cell frequency configuration information.

Optionally, the configuration information has multiple groups, and multiple groups of configuration information are in one-to-one correspondence with multiple cells adjacent to the cell where the IAB node is currently located.

As an alternative implementation manner, the method step 301 of the embodiment of the present invention may specifically include:

It should be noted that, the IAB node may receive all configuration information sent by the central unit CU through the F1 interface signaling; or receiving all configuration information sent by the CU through RRC signaling; or, receiving part of configuration information sent by the CU through the F1 interface signaling, and receiving the other part of configuration information sent by the CU through the RRC signaling.

It should be noted that, in the embodiment of the present invention, the IAB node receives the configuration information sent by the CU before the handover, but the IAB node does not perform the configuration, but performs the corresponding configuration according to the configuration information corresponding to the cell in which the IAB node is switched according to the cell in which the IAB node is switched when or after the IAB node is switched.

For intra-CU handover scenarios and inter-CU handover scenarios, it should be noted that after the IAB node is handed over, both its child nodes and UEs below the child nodes are handed over. The configuration information of the IAB node may further include configuration information of a descendant node of the IAB node in addition to the configuration information of the node, that is, optionally, the configuration information includes first configuration information and second configuration information, where the first configuration information is used for the first IAB node to perform configuration during or after handover, and the second configuration information is used for the second IAB node to perform configuration during or after handover of the first IAB node; the second IAB node is a descendant node of the first IAB node;

Based on this, the method step 301 of the embodiment of the present invention may specifically include:

or,

It should be noted that the specific configuration information of the first configuration information is different from the specific configuration information of the second configuration information

Since the first IAB node switches, its descendant node (second IAB node) also switches together, e.g. a switch donor DU or a switch donor CU, the descendant node also needs to perform the relevant configuration. However, in the process of switching the first IAB node, the descendant node does not know that the parent node (i.e., the first IAB node) is switched, how to make the descendant node of the first IAB node know that the first IAB node is switched, and also perform corresponding configuration, as an optional implementation manner, a method of an embodiment of the present invention may further include:

identification of the target cell;

the second configuration information.

Optionally, sending indication information to the second IAB node may include:

and sending indication information to the second IAB node through F1 interface signaling or RRC signaling.

In an embodiment, when the IAB node is used as the second IAB node and the second configuration information sent by the centralized unit is received, the indication information is an identifier of a target cell;

after sending the indication information to the second IAB node, the method further includes:

receiving the identification of the target cell sent by the first IAB node under the condition that the IAB node serves as the second IAB node;

and determining configuration information corresponding to the identification of the target cell in the second configuration information according to the identification of the target cell, and executing configuration.

In this embodiment, the second IAB node has received the second configuration information sent by the CU in advance before receiving the indication information, so the indication information only includes the target cell identifier.

In another embodiment, in a case that the IAB node receives, as the first IAB node, the first configuration information and the second configuration information sent by the concentration unit, the sending instruction information to the second IAB node includes:

determining configuration information corresponding to the identification of the target cell in the second configuration information according to the identification of the target cell;

And sending configuration information corresponding to the identification of the target cell in the second configuration information to the second IAB node.

In this embodiment, since the first IAB node receives the first configuration information corresponding to itself and the second configuration information corresponding to its descendant node (the second IAB node) sent by the CU, the first IAB node may determine, according to the identifier of the target cell, the configuration information corresponding to the identifier of the target cell in the second configuration information, and send the configuration information to its descendant node, so that the indication information only includes the configuration information.

In yet another embodiment, in a case that the IAB node is used as the first IAB node and receives the first configuration information and the second configuration information sent by the concentration unit, the indication information includes an identifier of the target cell and the second configuration information;

receiving the identifier of the target cell and the second configuration information sent by the first IAB node under the condition that the IAB node serves as the second IAB node;

Based on the embodiment shown in fig. 3, as an alternative implementation, the method step 302 of the embodiment of the present invention may specifically include:

The implementation of the node switch configuration method is specifically described below in terms of two examples from the point of interaction between the hub unit and the IAB node.

Example an intra-CU switching scenario

Fig. 4 is a third flowchart of a node switching configuration method according to an embodiment of the present invention. In the figure, IAB node2 is a child node of IAB node1, and both IAB node1 and IAB node2 are connected to the same CU. Here, specific interaction steps are as follows:

s1: the CU obtains configuration information of IAB node1 and IAB node 2;

the CU may generate itself or may be obtained through OAM or pre-configuration information.

The method of obtaining through the OAM may be that the CU requests configuration information from the OAM, specifically requests configuration information of the IAB node; when the OAM receives the request, configuration information is sent to the CU; alternatively, the OAM directly sends the configuration information of the IAB node to the CU.

S2: the CU sends configuration information of IAB node1 to IAB node 1;

optionally, the CU sends the configuration information of IAB node1 to IAB node1 and simultaneously sends the configuration information of IAB node2 to IAB node 1.

Here, the content included in the configuration information is described in the above embodiment, and will not be described herein.

Note that, the CU may be sent through F1 interface signaling, or may be sent through RRC signaling.

S3: the CU sends configuration information of IAB node2 to IAB node 2;

this step is an optional step, and if step S2, the CU sends the configuration information of IAB node2 to IAB node1, this step may not be performed, i.e., the CU does not send the configuration information of IAB node2 to IAB node 2.

S4: the CU determines to switch IAB node1 and its descendant nodes to a target cell and a target donor DU;

specifically, the triggering of the handover may be based on pre-configured information, such as time, location, etc.; either based on RRM measurements from the IAB (MT) or based on load information of the CU or DU, such as load balancing of the CU.

S5: the CU sends an intra-CU switching request or an IAB node information modification request to IAB node 1;

here, the intra-CU handover request or the IAB node information modification request carries the identity of the target cell.

It should be noted that the intra-CU handover request or the IAB node information modification request is mainly used to trigger the cell handover of IAB node1, or the handover triggered by IAB node1 itself in this step.

S6: and the IAB node1 determines corresponding configuration information according to the identification of the target cell, and executes configuration and switching flow.

S7: IAB node1 sends an intra-CU switch response or an IAB node information modification response to the CU.

It should be noted that, there is no sequence between S7 and S6, and step S7 may also be used to respond to the request message in step S5 before step S6.

S8: the IAB node1 sends indication information to the IAB node 2;

here, the indication information includes: identification of the target cell and/or configuration information of the descendant node (i.e., configuration information of IAB node 2).

It should be noted that, there is no sequence between S8 and S7, and step S8 may also precede step S7.

S9: and determining corresponding configuration information according to the indication information by the IAB node2, and executing configuration.

Note that, the IAB node2 does not need to perform a handover procedure, and only needs to be reconfigured according to the configuration information.

Example two inter-CU switching scenarios

Fig. 5 is a schematic flow chart of a node switching configuration method according to an embodiment of the present invention. In the figure, IAB node2 is a child node of IAB node1, and both IAB node1 and IAB node2 are connected to the same CU. The CU is the source CU. Here, specific interaction steps are as follows:

s11: the source CU obtains configuration information of IAB node1 and IAB node 2;

here, the source CU may be obtained through the target CU, or through OAM or preconfiguration information.

a) The method obtained by the target CU may be that the source CU requests configuration information from the target CU, specifically requests configuration information of the IAB node; when the target CU receives the request, the configuration information is sent to the source CU; or the target CU directly transmits the configuration information of the IAB node to the source CU.

b) The method for obtaining through the OAM may be that the source CU requests configuration information from the OAM, specifically requests configuration information of the IAB node; when the OAM receives the request, configuration information is sent to the source CU; alternatively, the OAM directly sends the configuration information of the IAB node to the source CU.

S12: the source CU sends configuration information of IAB node1 to IAB node 1;

optionally, the source CU sends the configuration information of IAB node1 to IAB node1 and simultaneously sends the configuration information of IAB node2 to IAB node 1.

The source CU may be signaled via the F1 interface, or may be signaled via RRC.

S13: the source CU sends configuration information of IAB node2 to IAB node 2;

this step is an optional step, and if in step S2, the source CU sends the configuration information of IAB node2 to IAB node1, this step may not be performed, i.e. the source CU does not send the configuration information of IAB node2 to IAB node 2.

S14: the source CU determines to switch IAB node1 and descendant nodes thereof to a target cell and a target donor CU;

S15: the source CU sends an inter-CU switching request or an IAB node information modification request to the IAB node 1;

here, the inter-CU handover request or the IAB node information modification request carries the identity of the target cell.

It should be noted that the inter-CU handover request or the IAB node information modification request is mainly used to trigger the cell handover of IAB node1, or the handover triggered by IAB node1 itself in this step.

S16: and the IAB node1 determines corresponding configuration information according to the identification of the target cell, and executes configuration and switching flow.

S17: the IAB node1 sends an inter-CU handover response or an IAB node information modification response to the source CU.

It should be noted that, there is no sequence between S17 and S16, and step S17 may be used to respond to the request message in step S15 before step S16.

S18: the IAB node1 sends indication information to the IAB node 2;

It should be noted that, there is no sequence between S18 and S17, and step S18 may precede step S17.

S19: and determining corresponding configuration information according to the indication information by the IAB node2, and executing configuration.

As shown in fig. 6, an embodiment of the present invention further provides a node switching configuration apparatus, including: memory 620, transceiver 600, processor 610: a memory 620 for storing program instructions; a transceiver 600 for transceiving data under the control of the processor 610; a processor 610 for reading the program instructions in the memory 620, the transceiver 600 performs the following operations:

and sending the configuration information to the IAB node.

Wherein in fig. 6, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 610 and various circuits of memory represented by memory 620, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. Transceiver 600 may be a number of elements, including a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium, including wireless channels, wired channels, optical cables, etc. The processor 610 is responsible for managing the bus architecture and general processing, and the memory 620 may store data used by the processor 610 in performing operations.

The processor 610 may be a Central Processing Unit (CPU), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a Field programmable gate array (Field-Programmable Gate Array, FPGA) or a complex programmable logic device (Complex Programmable Logic Device, CPLD), and the processor may also employ a multi-core architecture.

identification of the target cell;

returning configuration information of an adaptation protocol (BAP) layer;

IP address configuration information;

cell frequency configuration information.

generated by the concentration unit;

obtained by the target concentration unit;

obtained by operating the maintenance management device;

obtained by pre-configuration.

Optionally, the configuration information of the IAB node is obtained by a target centralized unit; the transceiver 600 specifically includes:

or,

Optionally, the configuration information of the IAB node is obtained through an operation maintenance management device; the transceiver 600 specifically includes:

or,

Optionally, the transceiver 600 specifically includes:

Optionally, the configuration information includes first configuration information and second configuration information, the IAB node includes a first IAB node and a second IAB node, and the second IAB node is a descendant node of the first IAB node;

The transceiver 600 specifically includes:

Optionally, the transceiver 600 specifically includes:

The node switching configuration device of the embodiment of the invention obtains the configuration information of the Integrated Access Backhaul (IAB) node through the centralized unit, wherein the configuration information is used for the IAB node to execute configuration during or after switching; the configuration information is sent to the IAB node, so that the IAB node can obtain the configuration information in advance, the IAB node is configured according to the configuration information in advance in the switching process, the switching time delay of transmission service is reduced, and the probability of occurrence of transmission service interruption is reduced.

It should be noted that, the above device provided in the embodiment of the present invention can implement all the method steps implemented in the method embodiment and achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those in the method embodiment in this embodiment are omitted.

As shown in fig. 7, the embodiment of the present invention further provides a node switching configuration device, including:

an obtaining module 701, configured to obtain configuration information of an integrated access backhaul IAB node, where the configuration information is used for the IAB node to perform configuration during or after handover;

A first sending module 702, configured to send the configuration information to the IAB node.

identification of the target cell;

returning configuration information of an adaptation protocol (BAP) layer;

IP address configuration information;

cell frequency configuration information.

generated by the concentration unit;

obtained by the target concentration unit;

obtained by operating the maintenance management device;

obtained by pre-configuration.

Optionally, the configuration information of the IAB node is obtained by a target centralized unit; correspondingly, the acquiring module 701 includes:

the first receiving unit is used for receiving the configuration information of the IAB node sent by the target centralized unit;

or,

a first sending unit, configured to send a first request message to the target centralized unit, where the first request message requests to obtain configuration information of the IAB node;

and the second receiving unit is used for receiving the configuration information of the IAB node sent by the target centralized unit according to the first request message.

Optionally, the configuration information of the IAB node is obtained through an operation maintenance management device; correspondingly, the acquiring module 701 includes:

A third receiving unit, configured to receive configuration information of an IAB node sent by the operation maintenance management device;

or,

a second sending unit, configured to send a second request message to the operation maintenance management device, where the second request message requests to obtain configuration information of the IAB node;

and a fourth receiving unit, configured to receive configuration information of the IAB node sent by the operation maintenance management device according to the second request message.

Optionally, the first sending module 702 includes:

and the third sending unit is used for sending the configuration information to the IAB node through F1 interface signaling and/or Radio Resource Control (RRC) signaling.

the first configuration information is used for the first IAB node to execute configuration during or after switching, and the second configuration information is used for the second IAB node to execute configuration during or after switching; correspondingly, the first sending module comprises:

A fourth sending unit, configured to send the first configuration information and the second configuration information to the first IAB node; or,

and a fifth sending unit, configured to send the first configuration information to the first IAB node, and send the second configuration information to the second IAB node.

Optionally, the apparatus further comprises:

the second sending module is configured to send a third request message carrying an identifier of a target cell to the IAB node if the IAB node meets a first handover trigger condition, where the third request message is a handover request message or an IAB node information modification request message; and determining corresponding configuration information according to the identification of the target cell when or after the IAB node is switched, and executing configuration.

Optionally, the apparatus further comprises:

a third sending module, configured to send, to the second IAB node, a fourth request message carrying an identifier of a target cell, where the fourth request message is a handover request message or an IAB node information modification request message, where the first IAB node meets a second handover trigger condition; and when or after the first IAB node is switched, the second IAB node determines corresponding configuration information according to the identification of the target cell, and executes configuration.

Optionally, the apparatus further comprises:

and the first receiving module is used for receiving a first response message sent by the IAB node, wherein the first response message is a switching response message or an IAB node information modification response message.

The node switching configuration device of the embodiment of the invention acquires the configuration information of the Integrated Access Backhaul (IAB) node through the acquisition module, wherein the configuration information is used for the IAB node to execute configuration during or after switching; the first sending module sends the configuration information to the IAB node, so that the IAB node can obtain the configuration information in advance, thereby configuring the IAB node according to the configuration information in advance in the switching process, reducing the switching time delay of transmission service and reducing the probability of transmission service interruption.

It should be noted that, in the embodiment of the present application, the division of the units is schematic, which is merely a logic function division, and other division manners may be implemented in actual practice. In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a processor-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution, in the form of a software product stored in a storage medium, including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

In some embodiments of the present invention, there is also provided a processor-readable storage medium storing program instructions for causing the processor to perform the steps of:

and sending the configuration information to the IAB node.

The program, when executed by the processor, can implement all the implementation manners in the above-mentioned method embodiment applied to the central unit side as shown in fig. 2, and in order to avoid repetition, will not be repeated here.

As shown in fig. 8, an embodiment of the present invention further provides a node switching configuration apparatus, including: memory 820, transceiver 800, processor 810: a memory 820 for storing program instructions; a transceiver 800 for transceiving data under the control of the processor 810; a processor 810 for reading the program instructions in the memory 820, the transceiver 800 performs the following operations:

receiving configuration information sent by a centralization unit;

the processor performs the following operations:

Wherein in fig. 8, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 810 and various circuits of memory represented by memory 820, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. Transceiver 800 may be a number of elements, including a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium, including wireless channels, wired channels, optical cables, etc. The processor 810 is responsible for managing the bus architecture and general processing, and the memory 820 may store data used by the processor 810 in performing operations.

The processor 810 may be a Central Processing Unit (CPU), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a Field programmable gate array (Field-Programmable Gate Array, FPGA) or a complex programmable logic device (Complex Programmable Logic Device, CPLD), or a multi-core architecture.

identification of the target cell;

returning configuration information of an adaptation protocol (BAP) layer;

IP address configuration information;

cell frequency configuration information.

Optionally, the transceiver 800 specifically includes:

Optionally, the configuration information includes first configuration information and second configuration information, where the first configuration information is used for the first IAB node to perform configuration during or after handover, and the second configuration information is used for the second IAB node to perform configuration during or after handover; the second IAB node is a descendant node of the first IAB node;

the transceiver 800 specifically includes:

Or,

Optionally, the transceiver 800 specifically includes:

identification of the target cell;

the second configuration information.

Optionally, the transceiver 800 specifically includes:

the processor specifically comprises:

Optionally, the transceiver 800 specifically includes:

The node switching configuration device in the embodiment of the invention receives the configuration information sent by the centralized unit, wherein the configuration information is used for the IAB node to execute configuration during or after switching, so that the IAB node obtains the configuration information in advance, and executes configuration according to the configuration information in advance during or after switching, thereby reducing the switching time delay of transmission service and reducing the probability of interruption of the transmission service.

As shown in fig. 9, the embodiment of the present invention further provides a node switching configuration device, which includes:

a second receiving module 901, configured to receive configuration information sent by the centralized unit;

and a configuration module 902, configured to perform configuration according to the configuration information when the IAB node is switched or after the IAB node is switched.

identification of the target cell;

returning configuration information of an adaptation protocol (BAP) layer;

IP address configuration information;

cell frequency configuration information.

Optionally, the second receiving module 901 includes:

and a fifth receiving unit, configured to receive the configuration information sent by the centralized unit through F1 interface signaling and/or radio resource control RRC signaling.

Optionally, the configuration information includes first configuration information and second configuration information, where the first configuration information is used for the first IAB node to perform configuration during or after handover, and the second configuration information is used for the second IAB node to perform configuration during or after handover; the second IAB node is a descendant node of the first IAB node; correspondingly, the second receiving module 901 includes:

a sixth receiving unit, configured to receive, when the IAB node is the first IAB node, the first configuration information sent by the concentrating unit, or receive the first configuration information and the second configuration information sent by the concentrating unit;

or,

a seventh receiving unit, configured to receive, when the IAB node is the second IAB node, the second configuration information sent by the concentrating unit.

Optionally, the apparatus further comprises:

a fourth sending module, configured to send, when the IAB node is used as the first IAB node, indication information to the second IAB node, where the indication information is used to instruct the second IAB node to perform configuration when or after the first IAB node is switched, and the indication information includes at least one of the following information:

identification of the target cell;

the second configuration information.

Optionally, the configuration module 902 includes:

an eighth receiving unit, configured to receive a third request message carrying an identifier of a target cell sent by the concentrating unit, where the third request message is a handover request message or an IAB node information modification request message;

and the configuration unit is used for determining the configuration information corresponding to the identifier of the target cell in the configuration information according to the identifier of the target cell when or after the IAB node is switched, and executing configuration.

Optionally, the apparatus further comprises:

and a fifth sending module, configured to send a first response message to the centralized unit, where the first response message is a handover response message or an IAB node information modification response message.

receiving configuration information sent by a centralization unit;

The program, when executed by the processor, can implement all the implementation manners in the method embodiment applied to the IAB node side shown in fig. 3, and in order to avoid repetition, will not be described herein.

The technical scheme provided by the embodiment of the application can be suitable for various systems, in particular to a 5G system. For example, suitable systems may be global system for mobile communications (Global System of Mobile communication, GSM), code division multiple access (Code Division Multiple Access, CDMA), wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) universal packet Radio service (General Packet Radio Service, GPRS), long term evolution (Long Term Evolution, LTE), LTE frequency division duplex (Frequency Division Duplex, FDD), LTE time division duplex (Time Division Duplex, TDD), long term evolution-advanced (Long Term Evolution Advanced, LTE-a), universal mobile system (Universal Mobile Telecommunication System, UMTS), worldwide interoperability for microwave access (Worldwide interoperability for Microwave Access, wiMAX), 5G New air interface (New Radio, NR), and the like. Terminal devices and network devices are included in these various systems. Core network parts such as evolved packet system (Evloved Packet System, EPS), 5G system (5 GS) etc. may also be included in the system.

The network device according to the embodiment of the present application may be a base station, where the base station may include a plurality of cells for providing services for a terminal. A base station may also be called an access point or may be a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices, or other names, depending on the particular application. The network device may be operable to exchange received air frames with internet protocol (Internet Protocol, IP) packets as a router between the wireless terminal device and the rest of the access network, which may include an Internet Protocol (IP) communication network. The network device may also coordinate attribute management for the air interface. For example, the network device according to the embodiments of the present application may be a network device (Base Transceiver Station, BTS) in a global system for mobile communications (Global System for Mobile communications, GSM) or code division multiple access (Code Division Multiple Access, CDMA), a network device (NodeB) in a wideband code division multiple access (Wide-band Code Division Multiple Access, WCDMA), an evolved network device (evolutional Node B, eNB or e-NodeB) in a long term evolution (Long Term Evolution, LTE) system, a 5G base station (gNB) in a 5G network architecture (next generation system), a home evolved base station (Home evolved Node B, heNB), a relay node (relay node), a home base station (femto), a pico base station (pico), and the like. In some network structures, the network device may include a Centralized Unit (CU) node and a Distributed Unit (DU) node, which may also be geographically separated.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.

Claims

1. A node switching configuration method, comprising:

the centralized unit sends the configuration information to the IAB node before the IAB node is switched;

the method further comprises the steps of:

sending a third request message carrying the identifier of the target cell to the IAB node under the condition that the IAB node meets the first handover triggering condition, wherein the third request message is a handover request message or an IAB node information modification request message; and the IAB node is used for determining corresponding configuration information according to the identification of the target cell during or after the handover and executing the configuration.

2. The method of claim 1, wherein the content of the configuration information comprises at least one of:

identification of the target cell;

returning configuration information of an adaptation protocol (BAP) layer;

IP address configuration information;

cell frequency configuration information.

3. The method of claim 1, wherein the obtaining the configuration information of the IAB node includes at least one of:

Generated by the concentration unit;

obtained by the target concentration unit;

obtained by operating the maintenance management device;

obtained by pre-configuration.

4. The method of claim 3, wherein the configuration information of the IAB node is obtained by a target concentration unit;

or,

5. The method according to claim 3, wherein the configuration information of the IAB node is obtained by an operation maintenance management device;

or,

6. The method of claim 1 wherein the configuration information has a plurality of sets, the plurality of sets of configuration information corresponding one-to-one to a plurality of cells adjacent to a cell in which the IAB node is currently located.

7. The method of claim 1, wherein the sending the configuration information to the IAB node comprises:

8. The method of claim 1, wherein the configuration information comprises first configuration information and second configuration information, the IAB node comprises a first IAB node and a second IAB node, the second IAB node being a descendant node of the first IAB node;

the sending the configuration information to the IAB node includes:

9. The method of claim 8, wherein the method further comprises:

sending a fourth request message carrying the identifier of the target cell to the second IAB node under the condition that the first IAB node meets a second handover triggering condition, wherein the fourth request message is a handover request message or an IAB node information modification request message; and the second IAB node is used for determining corresponding configuration information according to the identification of the target cell when or after the first IAB node is switched, and executing configuration.

10. The method according to claim 1, wherein the method further comprises:

11. A node switching configuration method, comprising:

the integrated access backhaul IAB node receives configuration information sent by a centralized unit before switching;

the IAB node executes configuration according to the configuration information when or after switching;

And the IAB node executes configuration according to the configuration information during or after switching, and comprises the following steps:

12. The method of claim 11, wherein the content of the configuration information comprises at least one of:

identification of the target cell;

returning configuration information of an adaptation protocol (BAP) layer;

IP address configuration information;

cell frequency configuration information.

13. The method of claim 11 wherein the configuration information has a plurality of sets, wherein the plurality of sets of configuration information are in one-to-one correspondence with a plurality of cells adjacent to a cell in which the IAB node is currently located.

14. The method of claim 11, wherein receiving configuration information sent by the concentration unit comprises:

15. The method of claim 11, wherein the configuration information comprises first configuration information and second configuration information, the first configuration information being used for a first IAB node to perform configuration at or after a handover, the second configuration information being used for a second IAB node to perform configuration at or after the handover; the second IAB node is a descendant node of the first IAB node;

the configuration information sent by the receiving centralized unit includes:

or,

16. The method of claim 15, wherein the method further comprises:

Identification of the target cell;

the second configuration information.

17. The method of claim 11, wherein the method further comprises:

18. A node switching configuration apparatus, comprising: memory, transceiver, processor: a memory for storing program instructions; a transceiver for transceiving data under control of the processor; a processor for reading the program instructions in the memory, the transceiver performing the following operations:

transmitting the configuration information to the IAB node before the IAB node is handed over;

the transceiver specifically comprises:

19. The apparatus of claim 18, wherein the content of the configuration information comprises at least one of:

identification of the target cell;

returning configuration information of an adaptation protocol (BAP) layer;

IP address configuration information;

cell frequency configuration information.

20. The apparatus of claim 18, wherein the means for obtaining the configuration information of the IAB node comprises at least one of:

generated by a concentration unit;

obtained by the target concentration unit;

obtained by operating the maintenance management device;

obtained by pre-configuration.

21. The apparatus of claim 20, wherein the configuration information of the IAB node is obtained by a target concentration unit; the transceiver specifically comprises:

or,

22. The apparatus of claim 20, wherein the configuration information of the IAB node is obtained by an operation maintenance management device; the transceiver specifically comprises:

or,

23. The apparatus of claim 18 wherein the configuration information has a plurality of sets, the plurality of sets of configuration information corresponding one-to-one to a plurality of cells adjacent to a cell in which the IAB node is currently located.

24. The apparatus of claim 18, wherein the transceiver comprises:

25. The apparatus of claim 18, wherein the configuration information comprises first configuration information and second configuration information, the IAB node comprises a first IAB node and a second IAB node, the second IAB node being a descendant node of the first IAB node;

The transceiver specifically comprises:

26. The apparatus of claim 25, wherein the transceiver comprises:

27. The apparatus of claim 18, wherein the transceiver comprises:

28. A node switching configuration apparatus, comprising:

a first sending module, configured to send the configuration information to the IAB node before the IAB node is switched;

the apparatus further comprises:

the second sending module is configured to send a third request message carrying an identifier of a target cell to the IAB node if the IAB node meets a first handover trigger condition, where the third request message is a handover request message or an IAB node information modification request message; and the IAB node is used for determining corresponding configuration information according to the identification of the target cell during or after the handover and executing the configuration.

29. A node switching configuration apparatus, comprising: memory, transceiver, processor: a memory for storing program instructions; a transceiver for transceiving data under control of the processor; a processor for reading the program instructions in the memory, the transceiver for performing the following operations:

receiving configuration information sent by a centralized unit before switching;

The processor performs the following operations:

when or after switching, executing configuration according to the configuration information;

the transceiver specifically comprises:

the processor specifically comprises:

30. The apparatus of claim 29, wherein the content of the configuration information comprises at least one of:

identification of the target cell;

returning configuration information of an adaptation protocol (BAP) layer;

IP address configuration information;

cell frequency configuration information.

31. The apparatus of claim 29 wherein the configuration information has a plurality of sets, the plurality of sets of configuration information corresponding one-to-one to a plurality of cells adjacent to a cell in which the IAB node is currently located.

32. The apparatus of claim 29, wherein the transceiver comprises:

33. The apparatus of claim 29, wherein the configuration information comprises first configuration information for a first IAB node to perform configuration at or after a handover and second configuration information for a second IAB node to perform configuration at or after the handover; the second IAB node is a descendant node of the first IAB node;

the transceiver specifically comprises:

or,

34. The apparatus of claim 33, wherein the transceiver comprises:

Identification of the target cell;

the second configuration information.

35. The apparatus of claim 29, wherein the transceiver comprises:

36. A node switching configuration apparatus, comprising:

the second receiving module is used for receiving the configuration information sent by the centralizing unit before switching;

the configuration module is used for executing configuration according to the configuration information during or after switching;

the configuration module comprises:

37. A processor-readable storage medium, characterized in that the processor-readable storage medium stores program instructions for causing the processor to perform the steps of the node switch configuration method of any one of claims 1 to 10 or the steps of the node switch configuration method of any one of claims 11 to 17.