CN114071602A

CN114071602A - Node switching configuration method and device

Info

Publication number: CN114071602A
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: 2022-02-18
Anticipated expiration: 2040-08-04
Also published as: CN114071602B

Abstract

The invention provides a node switching configuration method and a node switching configuration device, which solve the problem of large transmission service delay or transmission service interruption caused by the switching of an IAB node in the prior art. The method comprises the following steps: the centralized unit acquires configuration information of an integrated access returned IAB node, wherein the configuration information is used for the IAB node to execute configuration during or after switching; and the centralized unit sends the configuration information to the IAB node. The invention can enable the IAB node to obtain the configuration information in advance, thereby carrying out configuration in advance according to the configuration information in the switching process of the IAB node, reducing the switching time delay of the transmission service and reducing the probability of transmission service interruption.

Description

Node switching configuration method and device

Technical Field

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

Background

The IAB (Integrated Access and Backhaul) network technology achieves the purpose of expanding the coverage area of the base station by relaying wireless signals among a plurality of nodes. The method is a network networking mode for solving the problem of base station coverage 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) pair connected to a base station or an IAB node, and the base station or the IAB node is called its parent node; the other part is an MT part of an IAB DU (IAB Distributed Unit) to which a UE (User Equipment) or an IAB node is connected downward, and the UE or the IAB MT node is called a child node thereof.

With the further development of IAB technology, IAB nodes are also mobile, for example, IAB nodes are installed on cars or trains. In order to normally transmit the service, the IAB node can realize the switching between the parent nodes. However, when the IAB node performs handover, there is a problem that a transmission service delay is large or a transmission service is interrupted.

Disclosure of Invention

The present invention provides a node handover configuration method and apparatus, which are used to solve the problem in the prior art that an IAB node performs handover, which results in a long service transmission delay or a long service transmission delay.

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

the centralized unit acquires configuration information of an integrated access returned IAB node, wherein the configuration information is used for the IAB node to execute configuration during or after switching;

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

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

an identity of a target cell;

returning configuration information of an adaptive protocol BAP layer;

IP address configuration information;

cell frequency configuration information.

Wherein, the acquisition mode of the configuration information of the IAB node comprises at least one of the following items:

generated by the concentration unit;

obtaining by the target concentration unit;

obtaining the information through operation maintenance management equipment;

obtained by pre-configuration.

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

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

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

alternatively, the first and second electrodes may be,

sending a first request message for requesting to obtain the configuration information of the IAB node to the target concentration unit;

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

The configuration information of the IAB node is obtained by operating maintenance management equipment;

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

alternatively, the first and second electrodes may be,

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 has a plurality of groups, and the plurality of groups of configuration information correspond to a plurality of cells adjacent to the cell where the IAB node is currently located one by one.

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

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 nodes comprise a first IAB node and a second IAB node, and the second IAB node is a descendant node of the first IAB node;

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

the sending the configuration information to the IAB node includes:

sending the first configuration information and the second configuration information to the first IAB node; alternatively, the first and second electrodes may be,

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

Wherein the method further comprises:

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

Wherein the method further comprises:

and receiving a first response message sent by the IAB node, 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 method, including:

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

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

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

an identity of a target cell;

returning configuration information of an adaptive protocol BAP layer;

IP address configuration information;

cell frequency configuration information.

Wherein, the configuration information sent by the receiving centralized unit includes:

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

The configuration information includes first configuration information and second configuration information, the first configuration information is used for a first IAB node to execute configuration during or after handover, and the second configuration information is used for a second IAB node to execute configuration during or after handover of the first IAB node; 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 central unit or receiving the first configuration information and the second configuration information sent by the central unit when the IAB node is the first IAB node;

alternatively, the first and second electrodes may be,

receiving the second configuration information sent by the centralized unit if the IAB node is the second IAB node.

Wherein the method further comprises:

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

an identity of a target cell;

the second configuration information.

Wherein, the IAB node executes configuration according to the configuration information during or after handover, including:

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

and the IAB node determines the configuration information corresponding to the identifier of the target cell in the configuration information according to the identifier of the target cell during or after switching, and executes 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 apparatus, including: memory, transceiver, processor: a memory for storing program instructions; a transceiver for transceiving data under control of the processor; a processor for reading program instructions in the memory, the transceiver performing the following:

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.

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

an identity of a target cell;

returning configuration information of an adaptive protocol BAP layer;

IP address configuration information;

cell frequency configuration information.

generated by the concentration unit;

obtaining by the target concentration unit;

obtaining the information through operation maintenance management equipment;

obtained by pre-configuration.

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

alternatively, the first and second electrodes may be,

The configuration information of the IAB node is obtained by operating maintenance management equipment; the transceiver specifically includes:

alternatively, the first and second electrodes may be,

The transceiver specifically includes:

the transceiver specifically includes:

The transceiver specifically includes:

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

an obtaining module, 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, configured to send 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 apparatus, including: memory, transceiver, processor: a memory for storing program instructions; a transceiver for transceiving data under control of the processor; a processor for reading program instructions in the memory, the transceiver for performing the following:

receiving configuration information sent by a centralized unit;

the processor performs the following operations:

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

an identity of a target cell;

returning configuration information of an adaptive protocol BAP layer;

IP address configuration information;

cell frequency configuration information.

The transceiver specifically includes:

the transceiver specifically includes:

alternatively, the first and second electrodes may be,

The transceiver specifically includes:

an identity of a target cell;

the second configuration information.

The transceiver specifically includes:

the processor specifically includes:

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 the IAB node is switched 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, where the processor-readable storage medium stores program instructions for causing the processor to execute the steps of the node switching configuration method described above.

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

in the technical solution of the embodiment of the present invention, configuration information of an integrated access backhaul IAB node is obtained by a centralized unit, and the configuration information is used for the IAB node to execute 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 configuration is carried out in advance according to the configuration information in the switching process of the IAB node, the switching time delay of the transmission service is reduced, and the probability of transmission service interruption is reduced.

Drawings

Fig. 1 is a schematic diagram of a conventional IAB network topology;

fig. 2 is a flowchart illustrating a node switching configuration method according to an embodiment of the present invention;

fig. 3 is a second flowchart illustrating a node switching configuration method according to an embodiment of the invention;

fig. 4 is a third schematic flow chart of a node switching configuration method according to an embodiment of the present invention;

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

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

fig. 7 is a block diagram of a node switching configuration apparatus according to an embodiment of the present invention;

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

fig. 9 is a second block diagram of a node switching configuration apparatus according to an embodiment of the invention.

Detailed Description

The term "and/or" in the embodiments of the present invention describes an association relationship of associated objects, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

In the embodiments of the present application, the term "plurality" means two or more, and other terms are similar thereto.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

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 conjunction with fig. 1.

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

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

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

In fig. 1, IAB node1 is a parent node of IAB node2, IAB node 3 is a child node of IAB node2, and IAB node 3 is a descendant 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 centralized unit acquires configuration information of an integrated access returned IAB node, wherein the configuration information is used for the IAB node to execute configuration during or after switching;

here, the concentration unit refers to the CU of the IAB donor.

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

The node switching configuration method of the embodiment of the invention acquires configuration information of an integrated access backhaul IAB node through a 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 configuration is carried out in advance according to the configuration information in the switching process of the IAB node, the switching time delay of the transmission service is reduced, and the probability of transmission service interruption is reduced.

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

an identity of a target cell;

returning configuration information of an adaptive protocol BAP layer;

IP address configuration information;

cell frequency configuration information.

It should be noted that the identifier of the target Cell includes a PCI (Physical Cell Identity) of the target Cell and/or a CGI (Global Cell ID) of the target Cell. Here, this is merely an example, and other identifiers that can be used to identify a cell may be used, and the present invention is not limited in particular.

The identifier of the target cell may be used to identify a corresponding relationship between the cell to which the IAB node is handed over and the IAB node configuration information. That is, during or after subsequent IAB node handover, the corresponding configuration information may be determined by the identifier of the target cell, and the configuration may be executed.

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

the first method is as follows: generated by the concentration unit;

the second method comprises the following steps: obtaining by the target concentration unit;

the third method comprises the following steps: obtaining the information through operation maintenance management equipment;

the method is as follows: obtained by pre-configuration.

It should be noted that, specifically, the IAB node handover refers to a handover of an IAB node from a source parent node to a target parent node. IAB node handover involves two handover scenarios. Firstly, the IAB node is switched from a source parent node to a target parent node, but the connected donor CU is not changed, only the donor DU different from the lower side of the donor CU is changed, and the switching is intra-CU switching; and the other is that the IAB node is switched from the source parent node to the target parent node, the connected donor CU is changed, namely the source donor CU is switched to the target donor CU, and the switching is inter-CU switching.

Here, the configuration information of the IAB node is obtained by the central unit, that is, the central unit generates the configuration information of the IAB node by itself, and the obtaining method is suitable for intra-CU switching scenarios.

In the intra-CU switching scenario, the CUs are not switched, and in the process of switching the IAB node, the IAB node is switched from one donor DU to another donor DU, where the two donor DUs are both connected to the same CU, so the CU can generate configuration information for switching the IAB node between the donor DUs.

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

note that the target concentration unit is a target donor CU. The configuration information of the IAB nodes is acquired through the target concentration unit and is suitable for the inter-CU switching scene.

In the inter-CU switching scenario, during the IAB node switching process, the IAB node is switched from the source CU to the target CU, and therefore, the source CU needs to obtain the IAB node configuration information at the target CU through the target CU. Specifically, the method for acquiring configuration information of an IAB node, that is, step 201 of the method of the present invention, may specifically include:

alternatively, the first and second electrodes may be,

That is, the method of obtaining the configuration information of the IAB node may be that the target CU directly sends the configuration information of the IAB node to the source CU; alternatively, the source CU requests the target CU for configuration information for the IAB node, 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 by operating a maintenance management device;

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

Specifically, the method for acquiring configuration information of an IAB node, that is, step 201 of the method of the present invention, may specifically include:

alternatively, the first and second electrodes may be,

That is, the method for obtaining the configuration information of the IAB node may be that the OAM device directly sends the configuration information of the IAB node to the source CU; alternatively, the source CU requests the 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 acquisition manner of obtaining the configuration information of the IAB node by 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, because the IAB node may have intra-CU handover or inter-CU handover, that is, two scenes exist simultaneously, the first and second manners 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 both the two pieces of configuration information are configured to the IAB node, and are used for intra-CU handover and inter-CU handover of the IAB node, respectively. Of course, the third and fourth modes can also exist in the same mode one and mode two, as a supplement to the acquisition method.

It should be noted that, during the movement of an IAB node, there are multiple cells nearby, and it is possible to handover to one of the nearby cells. However, since the present invention sends the configuration information to the IAB before the IAB handover, it is necessary to consider a plurality of cells in the vicinity and it is possible to handover to a certain cell, and therefore, optionally, there are a plurality of sets of the configuration information, and the plurality of sets of the configuration information correspond to a plurality of cells in the vicinity of 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 neighboring cell, where the configuration information may be intra-CU handover configuration information or inter-CU handover configuration information.

For example, there are 2 cells, cell 1 and cell 2, near the IAB node. If the switching of the IAB node to the cell 1 is intra-CU switching, 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 switching of the IAB node to the cell 2 is inter-CU switching, the CU obtains the configuration information of the IAB node corresponding to the cell 2 through the target CU, or obtains the configuration information of the IAB node corresponding to the cell 2 through OAM equipment or pre-configuration. Therefore, the CU sends two sets of configuration information to the IAB node, corresponding to cell 1 and cell 2, respectively.

It should be noted that, after acquiring the configuration information of the IAB node, what manner is used to send the configuration information of the IAB node, as an optional implementation manner, the method step 202 in 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 the 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 signaling of the F1 interface, 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, is signaled through F1 interface; BAP configuration information and IP address configuration information are sent 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 handed over, so that the configuration information is only sent to the IAB node and does not perform real configuration, and until the IAB node is handed over, corresponding configuration is performed according to the configuration information corresponding to the cell according to the cell handed over by the IAB node.

For intra-CU switching scenes and inter-CU switching scenes, it is noted that after the IAB node is switched, the sub-node and the UE below the sub-node are switched. The configuration information of the IAB node may include, in addition to the configuration information of the node, configuration information of descendant nodes of the IAB 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 a plurality of sets, and the plurality of sets of first configuration information correspond to a plurality of cells adjacent to a cell where the first IAB node is currently located. Of course, the first configuration information may also have only one group, where the group of first configuration information corresponds to a cell after handover of a parent node of the first IAB node, that is, the group of first configuration information corresponds to an identifier of a target cell to which the first IAB node determines handover.

The second configuration information may have multiple sets, and the multiple sets of second configuration information correspond to multiple cells adjacent to the cell where the first IAB node is currently located one to one. Of course, there may be only one set of second configuration information, where the set of second configuration information corresponds to a cell after handover of a parent node of the first IAB node, that is, the set of second configuration information corresponds to an identifier of a target cell for handover determination by the first IAB node.

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

As an optional implementation manner, the method according to 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 above embodiment that 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, as an optional implementation manner, the method according to the embodiment of the present invention may further include:

In this step, in the case that the first IAB node satisfies the second handover triggering condition, the CU of the central unit 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), 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 handover of the first IAB node.

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

step 301, integrating the configuration information sent by the access backhaul IAB node receiving central unit;

and step 302, the IAB node executes configuration according to the configuration information during or after handover.

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

an identity of a target cell;

returning configuration information of an adaptive protocol BAP layer;

IP address configuration information;

cell frequency configuration information.

Optionally, there are multiple sets of the configuration information, where the multiple sets of the configuration information correspond to multiple cells adjacent to the cell where the IAB node is currently located one to one.

As an optional implementation manner, step 301 of the method according to 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 the configuration information sent by the CU through the F1 interface signaling, and receiving another part of the 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 switched by the IAB node when or after the IAB node is handed over.

For intra-CU switching scenes and inter-CU switching scenes, it is noted that after the IAB node is switched, the sub-node and the UE below the sub-node are switched. The configuration information of the IAB node may include, in addition to the configuration information of the node, configuration information of descendant nodes of the IAB node, that is, optionally, the configuration information includes first configuration information and second configuration information, 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, step 301 of the method according to the embodiment of the present invention may specifically include:

alternatively, the first and second electrodes may be,

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 is handed over, its descendant node (second IAB node) is also handed over along with the handover, such as the handover donor DU or the handover donor CU, and therefore, 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 perform corresponding configuration, and as an optional implementation manner, the method of the embodiment of the present invention may further include:

an identity of a 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 serves as the second IAB node and receives the second configuration information sent by the central unit, the indication information is an identifier of a target cell;

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

receiving the identifier of the target cell sent by the first IAB node under the condition that the IAB node is taken as the second IAB node;

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

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

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

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

and sending the configuration information corresponding to the identifier 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 (second IAB node), which are sent by the CU, the first IAB node may determine the configuration information corresponding to the identifier of the target cell in the second configuration information according to the identifier of the target cell and send the configuration information to its descendant node, so that the indication information only includes the configuration information.

In a further embodiment, in a case that the IAB node receives the first configuration information and the second configuration information sent by the concentration unit as the first IAB node, 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 is the second IAB node;

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

The following describes the implementation of the node switching configuration method in terms of two examples from the interaction perspective between the centralized unit and the IAB node.

Example an intra-CU switching scenario

Fig. 4 is a third 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 IAB node1 and IAB node2 are both connected to the same CU. Here, the specific interaction steps are as follows:

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

CUs may be generated by themselves or obtained through OAM or preconfigured information.

The method obtained by OAM may be that a CU requests configuration information from OAM, specifically requests configuration information of an IAB node; when the OAM receives the request, sending configuration information to the CU; alternatively, the configuration information of the IAB node is sent directly to the CU by the OAM.

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

alternatively, the CU transmits the configuration information of IAB node1 to IAB node1, and also transmits the configuration information of IAB node2 to IAB node 1.

Here, the content included in the configuration information is already described in the above embodiments, and is not described here again.

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

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

this step is an optional step, and if the CU sent the configuration information of IAB node2 to IAB node1 at step S2, this step may not be performed, that is, the CU did not send the configuration information of IAB node2 to IAB node 2.

S4: CU determines to switch IAB node1 and its descendant node to the target cell and the target doror DU;

specifically, the triggering of the handover may be based on preconfigured information, such as time, location, etc.; either based on RRM measurements from the iab (mt) or on CU or DU load information, such as CU load balance, etc.

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

here, the intra-CU handover request or the IAB node information modification request carries the identifier 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 the IAB node1, or the handover triggered by the IAB node1 itself in this step.

S6: the IAB node1 determines the corresponding configuration information according to the identifier of the target cell, and executes the configuration and handover procedures.

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

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

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 for the descendant node (i.e., configuration information for IAB node 2).

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

S9: the IAB node2 determines corresponding configuration information according to the indication information, and executes configuration.

It should be noted that the IAB node2 does not need to execute the handover procedure, and only needs to perform reconfiguration according to the configuration information.

Example two inter-CU switching scenarios

Fig. 5 is a fourth schematic flow chart of the node switching configuration method according to the embodiment of the present invention. In the figure, IAB node2 is a child node of IAB node1, and IAB node1 and IAB node2 are both connected to the same CU. The CU is the source CU. Here, the 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 by the target CU, or by OAM or preconfigured information.

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

b) The method obtained through OAM can be that a source CU requests configuration information from OAM, specifically requests configuration information of an IAB node; when the OAM receives the request, configuration information is sent to the source CU; alternatively, the configuration information of the IAB node is sent directly to the source CU by the OAM.

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

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

The source CU may be signaled through an F1 interface, or may be signaled through RRC signaling.

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

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

S14: the source CU determines to switch the IAB node1 and descendant nodes thereof to the target cell and the target doror 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 identifier 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 the IAB node1, or the handover triggered by the IAB node1 itself in this step.

S16: the IAB node1 determines the corresponding configuration information according to the identifier of the target cell, and executes the configuration and handover procedures.

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 precedence order between S17 and S16, and step S17 may be used before step S16 to respond to the request message in step S15.

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

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

S19: the IAB node2 determines corresponding configuration information according to the indication information, and executes 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 performing the following operations:

and sending the configuration information to the IAB node.

Wherein in fig. 6, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 610, and various circuits, represented by memory 620, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 600 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium including wireless channels, wired channels, fiber optic cables, and the like. 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 (ASIC), a Field Programmable Gate Array (FPGA), or a Complex Programmable Logic Device (CPLD), and may also have a multi-core architecture.

an identity of a target cell;

returning configuration information of an adaptive protocol BAP layer;

IP address configuration information;

cell frequency configuration information.

generated by the concentration unit;

obtaining by the target concentration unit;

obtaining the information through operation maintenance management equipment;

obtained by pre-configuration.

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

alternatively, the first and second electrodes may be,

Optionally, the configuration information of the IAB node is obtained by operating a maintenance management device; the transceiver 600 specifically includes:

alternatively, the first and second electrodes may be,

Optionally, the transceiver 600 specifically includes:

Optionally, the configuration information includes first configuration information and second configuration information, the IAB nodes include 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 acquires the configuration information of the integrated access return IAB through the centralized unit, wherein the configuration information is used for the IAB 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 configuration is carried out in advance according to the configuration information in the switching process of the IAB node, the switching time delay of the transmission service is reduced, and the probability of transmission service interruption is reduced.

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

As shown in fig. 7, an embodiment of the present invention further provides a node switching configuration apparatus, 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.

an identity of a target cell;

returning configuration information of an adaptive protocol BAP layer;

IP address configuration information;

cell frequency configuration information.

generated by the concentration unit;

obtaining by the target concentration unit;

obtaining the information through operation maintenance management equipment;

obtained by pre-configuration.

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

a first receiving unit, configured to receive the configuration information of the IAB node sent by the target concentration unit;

alternatively, the first and second electrodes may be,

a first sending unit, configured to send a first request message requesting to obtain configuration information of the IAB node to the target concentration unit;

a second receiving unit, configured to receive the configuration information of the IAB node sent by the target concentration unit according to the first request message.

Optionally, the configuration information of the IAB node is obtained by operating a maintenance management device; correspondingly, the obtaining module 701 includes:

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

alternatively, the first and second electrodes may be,

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

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

Optionally, the first sending module 702 includes:

a third sending unit, configured to send the configuration information to the IAB node through an F1 interface signaling and/or a radio resource control RRC signaling.

wherein the first configuration information is used for the first IAB node to execute configuration during or after handover, and the second configuration information is used for the second IAB node to execute configuration during or after handover; 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; alternatively, the first and second electrodes may be,

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:

a second sending module, configured to send a third request message carrying an identifier of a target cell to the IAB node when 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 identifier of the target cell and executing configuration when or after the IAB node is switched.

Optionally, the apparatus further comprises:

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

Optionally, the apparatus further comprises:

a first receiving module, configured to receive a first response message sent by the IAB node, where the first response message is a handover 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 return IAB through the acquisition module, wherein the configuration information is used for the IAB 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, the configuration is carried out in advance according to the configuration information in the switching process of the IAB node, the switching time delay of the transmission service is reduced, and the probability of transmission service interruption is reduced.

It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation. In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented as a software functional unit and sold or used as a stand-alone product, may be stored in a processor readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

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

and sending the configuration information to the IAB node.

When executed by the processor, the program can implement all the implementation manners in the embodiment of the method applied to the centralized unit side shown in fig. 2, and details are not described here for avoiding redundancy.

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 performing the following operations:

receiving configuration information sent by a centralized unit;

the processor performs the following operations:

Where in fig. 8, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 810, and various circuits, represented by memory 820, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 800 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium including wireless channels, wired channels, fiber optic cables, and the like. 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 (ASIC), a Field Programmable Gate Array (FPGA), or a Complex Programmable Logic Device (CPLD), and may also have a multi-core architecture.

an identity of a target cell;

returning configuration information of an adaptive 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 a first IAB node to perform configuration during or after handover, and the second configuration information is used for a 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;

the transceiver 800 specifically includes:

alternatively, the first and second electrodes may be,

Optionally, the transceiver 800 specifically includes:

an identity of a target cell;

the second configuration information.

Optionally, the transceiver 800 specifically includes:

the processor specifically includes:

Optionally, the transceiver 800 specifically includes:

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

As shown in fig. 9, the present invention further provides a node switching configuration apparatus, including:

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

a configuration module 902, configured to execute configuration according to the configuration information when or after the IAB node is handed over.

an identity of a target cell;

returning configuration information of an adaptive protocol BAP layer;

IP address configuration information;

cell frequency configuration information.

Optionally, the second receiving module 901 includes:

a fifth receiving unit, configured to receive the configuration information sent by the central unit through an F1 interface signaling and/or a 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 a first IAB node to perform configuration during or after handover, and the second configuration information is used for a 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; 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 concentration unit, or receive the first configuration information and the second configuration information sent by the concentration unit;

alternatively, the first and second electrodes may be,

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

Optionally, the apparatus further comprises:

a fourth sending module, configured to send, to the second IAB node, indication information when the IAB node is the first IAB node, where the indication information is used to indicate that the second IAB node performs configuration at or after handover of the first IAB node, and the indication information includes at least one of the following information:

an identity of a target cell;

the second configuration information.

Optionally, the configuring module 902 includes:

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

and a configuration unit, configured to determine, according to the identifier of the target cell, configuration information corresponding to the identifier of the target cell in the configuration information and perform configuration when or after the IAB node is handed over.

Optionally, the apparatus further comprises:

a fifth sending module, configured to send a first response message to the central 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 centralized unit;

When executed by the processor, the program can implement all the implementation manners in the embodiment of the method applied to the IAB node side shown in fig. 3, and details are not described here for avoiding repetition.

The technical scheme provided by the embodiment of the application can be suitable for various systems, particularly 5G systems. For example, the applicable System may be a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) General Packet Radio Service (General Packet Radio Service, GPRS) System, a Long Term Evolution (Long Term Evolution, LTE) System, a LTE Frequency Division Duplex (Frequency Division Duplex, FDD) System, a LTE Time Division Duplex (TDD) System, a Long Term Evolution (Long Term Evolution Access, LTE-a) System, a Universal Mobile Telecommunications System (UMTS), a Universal Mobile telecommunications Access (WiMAX) System, a New Radio network Access (NR 5, WiMAX) System, etc. These various systems include terminal devices and network devices. The System may further include a core network portion, such as an Evolved Packet System (EPS), a 5G System (5GS), and the like.

The network device according to the embodiment of the present application may be a base station, and the base station may include a plurality of cells for providing services to a terminal. A base station may also be referred to as an access point, or a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices, or by other names, depending on the particular application. The network device may be configured to exchange received air frames with 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 embodiment of the present application may be a Base Transceiver Station (BTS) in a Global System for Mobile communications (GSM) or a Code Division Multiple Access (CDMA), may be a network device (NodeB) in a Wideband Code Division Multiple Access (WCDMA), may be a evolved Node B (eNB or e-NodeB) in a Long Term Evolution (Long Term Evolution, LTE) System, may be a 5G Base Station (gbb) in a 5G network architecture (next generation System), may be a Home evolved Node B (Home B, HeNB), a relay Node (relay Node), a Home Base Station (femto), a pico Base Station (pico Base Station), and the like, and is not limited in the embodiments of the present application. In some network architectures, network devices may include Centralized Unit (CU) nodes and Distributed Unit (DU) nodes, which may also be geographically separated.

As will be appreciated by one skilled in the art, 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, 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 flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams 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 changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A node switching configuration method is characterized by comprising the following steps:

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

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

an identity of a target cell;

returning configuration information of an adaptive protocol BAP layer;

IP address configuration information;

cell frequency configuration information.

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

generated by the concentration unit;

obtaining by the target concentration unit;

obtaining the information through operation maintenance management equipment;

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;

alternatively, the first and second electrodes may be,

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

alternatively, the first and second electrodes may be,

6. The method of claim 1, wherein there are multiple sets of the configuration information, and the multiple sets of the configuration information correspond to multiple cells neighboring a cell where the IAB node is currently located one to one.

7. The method of claim 1, wherein 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, wherein the IAB nodes comprise a first IAB node and a second IAB node, and wherein the second IAB node is a descendant node of the first IAB node;

the sending the configuration information to the IAB node includes:

9. The method of claim 1, further comprising:

10. The method of claim 8, further comprising:

11. The method of claim 9, further comprising:

12. A node switching configuration method is characterized by comprising the following steps:

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

an identity of a target cell;

returning configuration information of an adaptive protocol BAP layer;

IP address configuration information;

cell frequency configuration information.

14. The method of claim 12, wherein there are multiple sets of the configuration information, and the multiple sets of the configuration information correspond to multiple cells neighboring a cell where the IAB node is currently located one to one.

15. The method of claim 12, wherein the receiving the configuration information sent by the central unit comprises:

16. The method of claim 12, wherein the configuration information comprises first configuration information and second configuration information, wherein the first configuration information is used for a first IAB node to perform configuration at or after handover, and wherein the second configuration information is used for a second IAB node to perform configuration at or after handover of the first IAB node; the second IAB node is a descendant node of the first IAB node;

the configuration information sent by the receiving centralized unit includes:

alternatively, the first and second electrodes may be,

17. The method of claim 16, further comprising:

an identity of a target cell;

the second configuration information.

18. The method of claim 12, wherein the IAB node performs configuration according to the configuration information at or after handover, comprising:

19. The method of claim 18, further comprising:

20. 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 program instructions in the memory, the transceiver performing the following:

and sending the configuration information to the IAB node.

21. The apparatus of claim 20, wherein the content of the configuration information comprises at least one of:

an identity of a target cell;

returning configuration information of an adaptive protocol BAP layer;

IP address configuration information;

cell frequency configuration information.

22. The apparatus of claim 20, wherein the configuration information of the IAB node is obtained in a manner comprising at least one of:

generated by a central unit;

obtaining by the target concentration unit;

obtaining the information through operation maintenance management equipment;

obtained by pre-configuration.

23. The apparatus of claim 22, wherein the configuration information of the IAB node is obtained by a target concentration unit; the transceiver specifically includes:

alternatively, the first and second electrodes may be,

24. The apparatus according to claim 22, wherein the configuration information of the IAB node is obtained by operating a maintenance management device; the transceiver specifically includes:

alternatively, the first and second electrodes may be,

25. The apparatus of claim 20, wherein there are multiple sets of the configuration information, and wherein the multiple sets of the configuration information correspond to multiple cells neighboring a cell where the IAB node is currently located.

26. The apparatus according to claim 20, wherein the transceiver specifically comprises:

27. The apparatus of claim 20, wherein the configuration information comprises first configuration information and second configuration information, wherein the IAB nodes comprise a first IAB node and a second IAB node, and wherein the second IAB node is a descendant node of the first IAB node;

the transceiver specifically includes:

28. The apparatus according to claim 20, wherein the transceiver specifically comprises:

29. The apparatus according to claim 27, wherein the transceiver specifically comprises:

30. The apparatus according to claim 28, wherein the transceiver specifically comprises:

31. A node switching configuration apparatus, comprising:

32. 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 program instructions in the memory, the transceiver for performing the following:

receiving configuration information sent by a centralized unit;

the processor performs the following operations:

33. The apparatus of claim 32, wherein the content of the configuration information comprises at least one of:

an identity of a target cell;

returning configuration information of an adaptive protocol BAP layer;

IP address configuration information;

cell frequency configuration information.

34. The apparatus of claim 32, wherein there are multiple sets of the configuration information, and wherein the multiple sets of the configuration information correspond to multiple cells neighboring a cell where the IAB node is currently located.

35. The apparatus according to claim 32, wherein the transceiver specifically comprises:

36. The apparatus of claim 32, wherein the configuration information comprises first configuration information and second configuration information, wherein the first configuration information is used for a first IAB node to perform configuration at or after handover, and wherein the second configuration information is used for a second IAB node to perform configuration at or after handover of the first IAB node; the second IAB node is a descendant node of the first IAB node;

the transceiver specifically includes:

alternatively, the first and second electrodes may be,

37. The apparatus according to claim 36, wherein the transceiver specifically comprises:

an identity of a target cell;

the second configuration information.

38. The apparatus according to claim 32, wherein the transceiver specifically comprises:

the processor specifically includes:

39. The apparatus according to claim 38, wherein the transceiver specifically comprises:

40. A node switching configuration apparatus, comprising:

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

41. 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 switching configuration method of any one of claims 1 to 11 or the steps of the node switching configuration method of any one of claims 12 to 19.