A switching method, device, apparatus and readable storage medium

Abstract

The application discloses a switching method and device, equipment and a readable storage medium, and relates to the technical field of communication, so as to improve the service experience of a terminal. The method comprises the following steps: obtaining a measurement result of a terminal; when the measurement result meets the condition of applying for cooperative SSB, sending an SSB cooperation request to a target node in a target cooperative cluster, wherein the target cooperative cluster comprises at least two target cooperative nodes; and in the case that an acknowledgement cooperation transmission response sent by the target cooperative cluster according to the SSB cooperation request is received, controlling the terminal to perform switching to the target cooperative cluster. The embodiment of the application can improve the service experience of the terminal.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of communication technology, and in particular to a switching method and device, equipment and a readable storage medium. BACKGROUND

[0002] Distributed hyper-MIMO (Multiple-In Multiple-Out) is a solution to the higher capacity communication demand of 6G. Through the coherent / incoherent transmission of multiple base stations, distributed hyper-MIMO can eliminate interference to improve user experience and can also improve overall capacity, and has broad application prospects in high-capacity scenarios.

[0003] Mobility management is a necessary mechanism for cellular mobile communication systems, which can provide better experience for users and improve the overall performance of the system. In the NR (New Radio) system, mobility management is mainly for centralized deployment of hyper-MIMO systems, which is mainly divided into two categories: mobility management in non-connected state and mobility management in connected state. For mobility management in non-connected state, it is mainly realized through the cell selection / reselection process controlled by the terminal; mobility management in connected state is mainly completed through network-controlled handover. Network-controlled handover is divided into cell-level mobile handover and beam-level mobile handover. This paper mainly discusses the cell-level mobile handover scheme.

[0004] In the existing cell-level mobility handover scheme, it is mainly for centralized deployment of hyper-MIMO systems. In order to realize low-latency seamless handover, the terminal can measure the information of the cooperative cell during the measurement process of mobility handover, so as to start the judgment of whether to cooperate in transmission in the handover stage, and realize the reduction of latency and the improvement of handover process rate or the enhancement of reliability.

[0005] For the case of existing cooperative SSB (Synchronization Signal and PBCH block), the RSRP (Reference Signal Received Power) of a single node and the RSRP of a cooperative node can be measured at the same time, and the source node (such as a base station) determines to select the optimal scheme for switching. In the case of no cooperative SSB, the source node can only measure the RSRP of a single node and sort it, and can only consider switching to the relatively optimal single node subsequently. At this time, if the source node service quality is poor, and multiple measured candidate neighbor target nodes are also not ideal (below the threshold value, or limitedly exceeding the threshold value), the terminal will not be able to switch or the service quality after switching will be limitedly improved; or for a terminal with high-rate service demand, although the service quality of a single non-cooperative node is good, the single non-cooperative node cannot meet the demand of the high-rate service, and the experience continuity of the terminal will be greatly challenged.

[0006] Therefore, for the distributed super-large-scale MIMO system without cooperative SSB configuration, how to make the terminal obtain a better service experience is a technical problem to be solved. SUMMARY

[0007] Embodiments of the present application provide a switching method, device, equipment and readable storage medium to improve the service experience of a terminal.

[0008] In a first aspect, embodiments of the present application provide a switching method applied to a first node, comprising:

[0009] obtaining a measurement result of a terminal;

[0010] when the measurement result meets a condition for applying cooperative SSB, sending an SSB cooperation request to a target node in a target cooperative cluster, wherein the target cooperative cluster includes at least two target cooperative nodes;

[0011] in the case of receiving an acknowledgement of cooperative transmission response sent by the target cooperative cluster according to the SSB cooperation request, controlling the terminal to switch to the target cooperative cluster.

[0012] The condition for applying cooperative SSB includes one or more of the following:

[0013] the terminal needs high-rate service, the RSRP (Reference Signal Received Power) of a single candidate non-cooperative node is greater than or equal to a first threshold value, but a single non-cooperative node cannot meet the demand of the high-rate service;

[0014] during movement of the terminal, the RSRP of all candidate non-cooperative nodes is less than the first threshold value but the RSRP of at least one of the candidate non-cooperative nodes is greater than or equal to a second threshold value, the first threshold value being greater than the second threshold value;

[0015] during movement of the terminal, the RSRP of at least one of the candidate non-cooperative nodes is greater than or equal to the first threshold value, and the difference between the RSRP of the at least one candidate non-cooperative node and the first threshold value is greater than or equal to a third threshold value.

[0016] The sending of the SSB cooperation request to the target node in the target cooperative cluster comprises:

[0017] allocating a cooperative SSB resource for the terminal, and obtaining cooperative SSB configuration information;

[0018] selecting a target candidate non-cooperative node from the candidate non-cooperative nodes to form at least one candidate cooperative cluster;

[0019] determining the target cooperative cluster from the candidate cooperative clusters, and sending the SSB cooperation request to a target node in the target cooperative cluster, the SSB cooperation request comprising the cooperative SSB configuration information.

[0020] The cooperative SSB resource allocated for the terminal is an unoccupied cooperative SSB resource.

[0021] The selecting of the target candidate non-cooperative node from the candidate non-cooperative nodes to form at least one candidate cooperative cluster comprises any one of:

[0022] selecting at least two target candidate non-cooperative nodes from the candidate non-cooperative nodes according to the measurement result and prior information to form the candidate cooperative clusters;

[0023] selecting at least two target candidate non-cooperative nodes from the candidate non-cooperative nodes at random according to the measurement result to form the candidate cooperative clusters.

[0024] The determining of the target cooperative cluster from the candidate cooperative clusters comprises:

[0025] obtaining the RSRP corresponding to each candidate cooperative cluster according to the RSRP of each candidate non-cooperative node in each candidate cooperative cluster;

[0026] selecting a target cooperative cluster from the candidate cooperative clusters according to the RSRP corresponding to each candidate cooperative cluster.

[0027] The target cooperative cluster is selected from the respective candidate cooperative clusters according to RSRP corresponding to the respective candidate cooperative clusters.

[0028] The candidate cooperative cluster with the maximum difference between the corresponding RSRP and the fourth threshold value is taken as the target cooperative cluster.

[0029] When the difference between the RSRP corresponding to the plurality of candidate cooperative clusters and the fourth threshold value is the same, the candidate cooperative cluster with a smaller number of cooperative nodes is taken as the target cooperative cluster.

[0030] The control of the terminal to the target cooperative cluster includes:

[0031] The information of the target cooperative cluster and cooperative SSB configuration information are sent to the terminal.

[0032] A handover preparation request is sent to the target cooperative cluster.

[0033] A handover preparation success message sent by the target cooperative cluster is received.

[0034] According to the handover preparation success message, the terminal is controlled to perform handover to the target cooperative cluster.

[0035] In a second aspect, the embodiments of the present application further provide a handover method, applied to a second node, and including:

[0036] An SSB cooperation request sent by a first node is received.

[0037] According to the SSB cooperation request, a response is sent to the first node, and the response includes a confirmation cooperation transmission response.

[0038] The first node is completed with the terminal to the target cooperative cluster.

[0039] The second node is a target cooperative node and is located in a target cooperative cluster.

[0040] The first node is completed with the terminal to the target cooperative cluster includes:

[0041] A handover preparation request sent by the first node is received.

[0042] A handover preparation success message is sent to the first node.

[0043] In a third aspect, the embodiments of the present application further provide a handover device, applied to a first node, and including:

[0044] A first acquisition module is configured to acquire a measurement result of a terminal.

[0045] The first sending module is configured to send an SSB cooperation request to target nodes in a target cooperation cluster when the measurement result meets a condition for applying for cooperation SSB, wherein the target cooperation cluster includes at least two target cooperation nodes.

[0046] The first processing module is configured to control the terminal to perform handover to the target cooperation cluster when an acknowledgement cooperation transmission response sent by the target cooperation cluster according to the SSB cooperation request is received.

[0047] The condition for applying for cooperation SSB includes one or more of the following:

[0048] The terminal needs a high-rate service, the RSRP of a single candidate non-cooperation node is greater than or equal to a first threshold, but a single non-cooperation node cannot meet the demand of the high-rate service;

[0049] During movement of the terminal, the RSRP of all candidate non-cooperation nodes is less than the first threshold, but the RSRP of at least one candidate non-cooperation node among the candidate non-cooperation nodes is greater than or equal to a second threshold, and the first threshold is greater than the second threshold;

[0050] During movement of the terminal, the RSRP of at least one candidate non-cooperation node among the candidate non-cooperation nodes is greater than or equal to the first threshold, and the difference between the RSRP of the at least one candidate non-cooperation node and the first threshold is greater than or equal to a third threshold.

[0051] The first sending module includes:

[0052] The allocating submodule is configured to allocate a cooperation SSB resource for the terminal and acquire cooperation SSB configuration information.

[0053] The selecting submodule is configured to select a target candidate non-cooperation node from candidate non-cooperation nodes and form at least one candidate cooperation cluster.

[0054] The processing submodule is configured to determine the target cooperation cluster from the candidate cooperation clusters and send the SSB cooperation request to target nodes in the target cooperation cluster, wherein the SSB cooperation request includes the cooperation SSB configuration information.

[0055] The cooperation SSB resource allocated for the terminal is an unoccupied cooperation SSB resource.

[0056] The acquiring submodule is configured to perform any one of the following:

[0057] The at least two target candidate non-cooperation nodes are selected from the candidate non-cooperation nodes according to the measurement result and prior information, and the candidate cooperation cluster is formed;

[0058] According to the measurement result, at least two target candidate non-cooperative nodes are randomly selected from the candidate non-cooperative nodes, to form the candidate cooperative cluster.

[0059] The processing submodule comprises:

[0060] The first obtaining submodule is configured to obtain the RSRP corresponding to each candidate cooperative cluster according to the RSRP of each candidate non-cooperative node in each candidate cooperative cluster.

[0061] The first selecting submodule is configured to select a target cooperative cluster from the candidate cooperative clusters according to the RSRP corresponding to each candidate cooperative cluster.

[0062] The sending submodule is configured to send the SSB cooperative request to a second node in the target cooperative cluster.

[0063] The first selecting submodule is configured to select the candidate cooperative cluster with the maximum difference between the corresponding RSRP and the fourth threshold value as the target cooperative cluster. When the differences between the RSRP corresponding to multiple candidate cooperative clusters and the fourth threshold value are the same, the candidate cooperative cluster with fewer cooperative nodes is selected as the target cooperative cluster.

[0064] The first processing module comprises:

[0065] The first sending submodule is configured to send the information of the target cooperative cluster and the cooperative SSB configuration information to the terminal.

[0066] The second sending submodule is configured to send a handover preparation request to the target cooperative cluster.

[0067] The first receiving submodule is configured to receive a handover preparation success message sent by the target cooperative cluster.

[0068] The first processing submodule is configured to control the terminal to perform handover to the target cooperative cluster according to the handover preparation success message.

[0069] In a fourth aspect, the embodiments of the present application further provide a handover device applied to a second node, comprising:

[0070] The first receiving module is configured to receive an SSB cooperative request sent by a first node.

[0071] The first sending module is configured to send a response to the first node according to the SSB cooperative request, wherein the response comprises a cooperative transmission confirmation.

[0072] The first processing module is configured to complete handover of a terminal to a target cooperative cluster with the first node.

[0073] The second node is a target cooperation node and is located in a target cooperation cluster.

[0074] The first processing module includes:

[0075] The first receiving submodule is configured to receive a handover preparation request sent by the first node.

[0076] The first sending submodule is configured to send a handover preparation success message to the first node.

[0077] In a fifth aspect, the embodiments of the present application further provide a handover device applied to a first node, including a processor and a transceiver; the processor is configured to:

[0078] Obtain a measurement result of a terminal.

[0079] When the measurement result meets a condition of applying for cooperation SSB, send an SSB cooperation request to a target node in a target cooperation cluster, wherein the target cooperation cluster includes at least two target cooperation nodes.

[0080] In a case where an acknowledgement cooperation transmission response sent by the target cooperation cluster according to the SSB cooperation request is received, control the terminal to perform handover to the target cooperation cluster.

[0081] The condition of applying for cooperation SSB includes one or more of the following:

[0082] The terminal needs a high-rate service, the RSRP of a single candidate non-cooperation node is greater than or equal to a first threshold value, but a single non-cooperation node cannot meet the demand of the high-rate service;

[0083] In a moving process of the terminal, the RSRP of all candidate non-cooperation nodes is less than the first threshold value, but the RSRP of at least one candidate non-cooperation node in the candidate non-cooperation nodes is greater than or equal to a second threshold value, and the first threshold value is greater than the second threshold value;

[0084] In the moving process of the terminal, the RSRP of at least one candidate non-cooperation node in the candidate non-cooperation nodes is greater than or equal to the first threshold value, and the difference between the RSRP of the at least one candidate non-cooperation node and the first threshold value is greater than or equal to a third threshold value.

[0085] The processor is further configured to:

[0086] Allocate a cooperation SSB resource for the terminal, and obtain cooperation SSB configuration information;

[0087] Select a target candidate non-cooperation node from the candidate non-cooperation nodes, and form at least one candidate cooperation cluster.

[0088] determining the target cooperative cluster from the candidate cooperative clusters, and sending a SSB cooperation request to a target node in the target cooperative cluster, the SSB cooperation request including the cooperative SSB configuration information.

[0089] wherein the cooperative SSB resource allocated to the terminal is an unoccupied cooperative SSB resource.

[0090] wherein the processor is further configured to perform any one of the following:

[0091] selecting at least two target candidate non-cooperative nodes from the candidate non-cooperative nodes according to the measurement results and prior information, to form the candidate cooperative cluster;

[0092] selecting at least two target candidate non-cooperative nodes from the candidate non-cooperative nodes according to the measurement results, to form the candidate cooperative cluster.

[0093] wherein the processor is further configured to:

[0094] obtaining an RSRP corresponding to each candidate cooperative cluster according to the RSRP of each candidate non-cooperative node in each candidate cooperative cluster;

[0095] selecting a target cooperative cluster from the candidate cooperative clusters according to the RSRP corresponding to each candidate cooperative cluster.

[0096] wherein the processor is further configured to:

[0097] selecting, as the target cooperative cluster, the candidate cooperative cluster corresponding to the largest difference between the RSRP and the fourth threshold value.

[0098] when the difference between the RSRP corresponding to each candidate cooperative cluster and the fourth threshold value is the same, selecting, as the target cooperative cluster, the candidate cooperative cluster with fewer cooperative nodes.

[0099] wherein the processor is further configured to:

[0100] sending information of the target cooperative cluster and cooperative SSB configuration information to the terminal;

[0101] sending a handover preparation request to the target cooperative cluster;

[0102] receiving a handover preparation success message sent by the target cooperative cluster;

[0103] controlling the terminal to perform handover to the target cooperative cluster according to the handover preparation success message.

[0104] In a sixth aspect, the embodiments of the present application further provide a handover device applied to a second node, comprising a processor and a transceiver; the processor is configured to:

[0105] receiving the SSB cooperation request sent by the first node;

[0106] sending a response to the first node according to the SSB cooperation request, the response including a confirmation cooperation transmission response;

[0107] completing terminal handover to a target cooperation cluster with the first node;

[0108] wherein the second node is a target cooperation node and is located in the target cooperation cluster.

[0109] wherein the processor is further configured to:

[0110] receiving a handover preparation request sent by the first node;

[0111] sending a handover preparation success message to the first node.

[0112] In a seventh aspect, an embodiment of the present application further provides a communication device, including: a transceiver, a memory, a processor, and a program stored in the memory and executable on the processor, and the processor implements the steps in the handover method when executing the program.

[0113] In an eighth aspect, an embodiment of the present application further provides a readable storage medium, and the readable storage medium stores a program, and the program is executable on a processor to implement the steps in the handover method.

[0114] In the embodiment of the present application, when it is determined according to the measurement result of the terminal that the condition for applying for cooperation SSB is met, an SSB cooperation request is sent to a target node in a target cooperation cluster, and in the case that a confirmation cooperation transmission response sent by the target cooperation cluster according to the SSB cooperation request is received, the terminal is controlled to perform handover to the target cooperation cluster. The target cooperation cluster includes at least two target cooperation nodes. According to the scheme of the embodiment of the present application, in the case that there is no cooperation SSB configuration, a cooperation application can be performed to the target cooperation cluster, so as to complete the handover of the terminal. Since the target cooperation cluster can perform cooperation handover, according to the scheme of the embodiment of the present application, in the case that the quality of service of the source node is poor and the target nodes of multiple measured candidate neighboring areas are also not ideal, or in the case that there is a high-rate service demand for the terminal and a single non-cooperation node cannot meet the demand of the higher-rate service of the terminal, the service experience of the terminal can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0115] Figure 1 is one of the flowcharts of the handover method provided by the embodiment of the present application;

[0116] Figure 2Figure 2 is a flowchart of a switching method according to an embodiment of the present application;

[0117] Figure 3 Figure 3 is a flowchart of a switching method according to an embodiment of the present application;

[0118] Figure 4 Figure 4 is a structural diagram of a switching device according to an embodiment of the present application;

[0119] Figure 5 Figure 5 is a structural diagram of a switching device according to an embodiment of the present application;

[0120] Figure 6 Figure 6 is a structural diagram of a switching device according to an embodiment of the present application;

[0121] Figure 7 Figure 7 is a structural diagram of a switching device according to an embodiment of the present application. DETAILED DESCRIPTION

[0122] In the embodiments of the present application, the term "and / or" describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can mean that there are three cases of A alone, A and B together, and B alone. The character " / " generally represents an "or" relationship between the associated objects before and after it.

[0123] In the embodiments of the present application, the term "a plurality of" means two or more, and other quantifiers are similar.

[0124] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0125] Reference is made to Figure 1 , Figure 1 Figure 1 is a flowchart of a switching method according to an embodiment of the present application, which is applied to a first node, such as a source base station, and includes the following steps as shown in Figure 1: Figure 1

[0126] Step 101: Obtain the measurement result of a terminal.

[0127] The first node can be a source base station, or can be referred to as a source node. The first node determines whether to trigger measurement according to the signal quality of a serving cell and whether to configure a neighbor frequency point, etc.

[0128] ​In the measurement process, the first node sends the terminal the measurement configuration information according to the RRC (Radio Resource Control) connection reconfiguration, including:

[0129] Measurement object: key attribute configuration information, such as SSB frequency point intra-frequency measurement, inter-frequency measurement, and cell offset;

[0130] Report configuration: measurement event;

[0131] Other configuration: SMTC (SS / PBCH block measurement timing configuration) configuration, measurement GAP configuration, and measurement filtering configuration;

[0132] Then, the terminal performs measurement reporting according to the measurement configuration.

[0133] For the scenario of blind switching, the above measurement process can not be needed.

[0134] Step 102: When the measurement result meets the condition for applying for cooperative SSB, an SSB cooperation request is sent to target nodes in a target cooperative cluster, wherein the target cooperative cluster includes at least two target cooperative nodes.

[0135] Since there is no cooperative SSB, the first node needs to make a decision according to the measurement result to determine whether to apply for a cooperative SSB. If the quality of service of the candidate non-cooperative node is good and the terminal has no high-rate service request, the cooperative SSB does not need to be applied for. If the quality of service of the candidate non-cooperative node is good, but the terminal is performing a high-rate service or has a high-rate service request (a single non-cooperative node cannot meet the high-rate requirement), the cooperative SSB needs to be applied for. If the quality of service of the candidate non-cooperative node is poor, it is needed to determine whether the condition for applying for a cooperative SSB is met. If the condition for applying for a cooperative SSB is met, the cooperative SSB application and the request and confirmation of the cooperative node are performed.

[0136] In the embodiments of the present application, the condition for applying for a cooperative SSB includes one or more of the following:

[0137] The terminal needs a high-rate service, the RSRP of a single candidate non-cooperative node is greater than or equal to a first threshold value, but a single non-cooperative node cannot meet the requirement of the high-rate service;

[0138] In the movement of the terminal, the RSRP of all candidate non-cooperative nodes is less than the first threshold value, but the RSRP of at least one of the candidate non-cooperative nodes is greater than or equal to a second threshold value, and the first threshold value is greater than the second threshold value;

[0139] In the moving process of the terminal, the RSRP of at least one candidate non-cooperative node in the candidate non-cooperative nodes is greater than or equal to the first threshold, and the difference between the RSRP of the at least one candidate non-cooperative node and the first threshold is greater than or equal to a third threshold.

[0140] The first threshold, the second threshold and the third threshold can be set according to actual needs.

[0141] In the process of sending the SSB cooperation request to the target node in the target cooperative cluster, the terminal can be allocated a cooperative SSB resource, and cooperative SSB configuration information can be obtained. The cooperative SSB resource allocated to the terminal is an unoccupied cooperative SSB resource. Then, a target candidate non-cooperative node is selected from the candidate non-cooperative nodes, at least one candidate cooperative cluster is formed, and at least one candidate cooperative cluster is formed using the target candidate non-cooperative node. Then, the target cooperative cluster is determined from the candidate cooperative cluster, and the SSB cooperation request is sent to the target node in the target cooperative cluster, and the SSB cooperation request includes the cooperative SSB configuration information.

[0142] Of course, in the above process, the target cooperative cluster can also be determined first, and then the cooperative SSB resource is allocated.

[0143] In selecting the target candidate non-cooperative node, any of the following methods can be used:

[0144] (1) At least two target candidate non-cooperative nodes are selected from the candidate non-cooperative nodes according to the measurement results and prior information, and the candidate cooperative cluster is formed.

[0145] The prior information includes existing measurement results of the terminal, etc. For example, a candidate non-cooperative node with RSRP greater than a certain threshold can be selected as the target candidate non-cooperative node according to the prior information.

[0146] (2) At least two target candidate non-cooperative nodes are randomly selected from the candidate non-cooperative nodes according to the measurement results, and the candidate cooperative cluster is formed.

[0147] In the process of forming the target cluster, the RSRP corresponding to each candidate cooperative cluster can be obtained according to the RSRP of each candidate non-cooperative node in each candidate cooperative cluster. For example, the RSRP of each candidate non-cooperative node in the candidate cooperative cluster can be weighted and summed to obtain the RSRP corresponding to each candidate cooperative cluster. Alternatively, the RSRP of each candidate non-cooperative node in the candidate cooperative cluster can also be averaged to obtain the RSRP corresponding to each candidate cooperative cluster. Then, the target cooperative cluster is selected from the candidate cooperative clusters according to the RSRP corresponding to each candidate cooperative cluster. For example, the candidate cooperative clusters are sorted according to the size of the corresponding RSRP, the optimal candidate cooperative cluster is selected as the target cooperative cluster, and the cooperative SSB resource is allocated to all non-cooperative nodes in the target cooperative cluster. For example, the candidate cooperative cluster with the largest difference between the corresponding RSRP and the fourth threshold value can be selected as the target cooperative cluster. The fourth threshold value can be set arbitrarily, and the fourth threshold value is greater than the first threshold value and is related to the number of nodes in the cooperative cluster. When the difference between the RSRP corresponding to multiple candidate cooperative clusters and the fourth threshold value is the same, the candidate cooperative cluster with fewer cooperative nodes is selected as the target cooperative cluster. For example, there are three candidate cooperative clusters with the same difference between the RSRP and the fourth threshold value, and the candidate cooperative cluster with the fewest cooperative nodes is selected as the target cooperative cluster.

[0148] Step 103, in the case that the target cooperative cluster sends the confirmation cooperative transmission response according to the SSB cooperative request, the terminal is controlled to perform handover to the target cooperative cluster.

[0149] In this step, the first node can send the information of the target cooperative cluster and the cooperative SSB configuration information to the terminal. For example, the first node can send the information of the target cooperative cluster and the cooperative SSB configuration information to the terminal through RRC connection reconfiguration signaling. Then, the first node sends a handover preparation request to the target cooperative cluster, receives a handover preparation success message sent by the target cooperative cluster, and controls the terminal to perform handover to the target cooperative cluster according to the handover preparation success message.

[0150] By using the scheme of the embodiments of the present application, the target cooperative cluster can be applied for cooperation without cooperative SSB configuration, so as to complete the handover of the terminal. Since the target cooperative cluster can perform cooperative handover, by using the scheme of the embodiments of the present application, the service experience of the terminal can be improved in the case that the quality of service of the source node is poor and the target nodes of multiple measured candidate neighboring cells are also not ideal, or in the case that there is a high-speed service demand for the terminal and a single non-cooperative node cannot meet the demand for higher-speed service of the terminal.

[0151] Referring to Figure 2 , Figure 2is a flowchart of a switching method provided by an embodiment of the present application, applied to a second node, such as Figure 2 as shown, comprising the following steps:

[0152] Step 201, receiving an SSB cooperation request sent by a first node.

[0153] The second node can be a target base station. The second node is a target cooperation node and is located in a target cooperation cluster. The target cooperation cluster is determined by the first node in the manner described in the foregoing embodiments.

[0154] Step 202, sending a response to the first node according to the SSB cooperation request, the response including a confirmation cooperation transmission response.

[0155] The second node can determine whether to send a confirmation cooperation transmission response or a non-cooperation transmission response according to its own load, whether it has been a cooperation node, etc. The SSB cooperation request further includes cooperation SSB configuration information.

[0156] Step 203, completing switching of a terminal to the target cooperation cluster with the first node.

[0157] In this step, the second node receives a switching preparation request sent by the first node and sends a switching preparation success message to the first node. Then, the specific switching process is performed with the terminal.

[0158] With the scheme of the embodiments of the present application, in the case of no cooperation SSB configuration, a cooperation application can be made to a target cooperation cluster, thereby completing switching of a terminal. Since cooperation switching can be performed by a target cooperation cluster, with the scheme of the embodiments of the present application, in the case that the quality of service of a source node is poor and multiple measured candidate neighbor target nodes are also not ideal, or in the case that there is a high-rate service demand for a terminal and a single non-cooperation node cannot meet the demand for a higher-rate service of the terminal, the service experience of the terminal can be improved.

[0159] For the distributed super large-scale MIMO system without cooperation SSB configuration, when the mobility switching process is performed, in order to ensure the continuity of user experience, the source base station can apply for SSB cooperation, and the mobile switching process is implemented, that is, the cooperative transmission is performed. Based on this, the embodiment of the present application proposes a cooperative switching request method of the source base station and the target base station. For the distributed super large-scale antenna system without cooperation SSB, the source base station can apply for SSB cooperation, the target base station confirms the cooperation, and then the source base station switches and notifies the terminal of the target cooperative base station. This is not particularly good for the scene of non-cooperative node quality of service, which can make the terminal obtain better service quality after mobile switching, or for the user high-rate service (such as AR (Augmented Reality, Augmented Reality) / VR (Virtual Reality, Virtual Reality)) mobile scene, the user experience continuity can be ensured. Wherein, the source base station can be used as a source node, and the target base station can be used as a target node.

[0160] Referring to Figure 3 , Figure 3 is a flowchart of the switching method provided by the embodiment of the present application, comprising:

[0161] Step 301, the source node performs measurement triggering (triggering link): the source node can determine whether to trigger measurement according to the signal quality of the serving cell and whether the adjacent frequency point is configured.

[0162] Step 302, the measurement process between the source node and the terminal (measurement link (not required when blind switching)):

[0163] The source node sends the measurement configuration information to the terminal according to the RRC connection reconfiguration, and the configuration information contains the non-cooperative node, including:

[0164] Measurement object: key attribute configuration information, such as SSB frequency point intra-frequency measurement, inter-frequency measurement, and cell offset;

[0165] Report configuration: measurement event;

[0166] Other configurations: SMTC configuration, measurement GAP configuration, and measurement filtering configuration;

[0167] Then, the terminal performs measurement reporting according to the measurement configuration. The measurement result is shown in Table 1.

[0168] Table 1: Non-cooperative node RSRP measurement result

[0169]

[0170] Step 303, the source node determines whether to apply for cooperation SSB (decision link):

[0171] Without the cooperation SSB, the source node needs to make a decision according to the measurement results to determine whether to apply for the cooperation SSB and the cooperation node. If the quality of service of the candidate non-cooperation node is good and the mobile user has no high-rate service request, the cooperation SSB is not needed to be applied for; if the quality of service of the candidate non-cooperation node is good but the mobile user is in high-rate or has high-rate service request (the single non-cooperation node cannot meet the high-rate requirement), the cooperation SSB needs to be applied for and the request and confirmation of the cooperation node are needed; if the quality of service of the candidate non-cooperation node is not good, it is needed to determine whether the condition for applying for the cooperation SSB is met. If the condition is met, the cooperation SSB application and the request and confirmation of the cooperation node are performed.

[0172] The condition for triggering the cooperation SSB application includes that the mobile user has high-rate service requirement and the RSRP of the single non-cooperation node is greater than the first threshold TH1 but cannot meet the high-rate requirement; or during the movement of the user, the RSRP of all candidate non-cooperation nodes is lower than the first threshold TH1 (but the RSRP of one or more candidate non-cooperation nodes is greater than a value which is less than the first threshold); or during the movement of the user, the RSRP of one or more candidate non-cooperation nodes is greater than the first threshold TH1 but the difference from the first threshold TH1 is less than a value (which can be set as needed).

[0173] In the process of cooperation SSB resource configuration, the source node selects the unoccupied cooperation SSB resource to allocate to the current terminal.

[0174] In the process of cooperation cluster configuration, the source node can generate the candidate cooperation cluster according to the existing measurement results, or select a plurality of non-cooperation nodes according to the existing prior information to construct a plurality of candidate cooperation clusters, or randomly select a plurality of better non-cooperation nodes to construct a plurality of candidate cooperation clusters. Then, the RSRP of the plurality of non-cooperation nodes in the candidate cooperation cluster is weighted and summed to obtain the RSRP corresponding to each cooperation cluster. The plurality of candidate cooperation clusters are sorted, the target cooperation cluster is selected, and the above cooperation SSB resource is allocated to all cooperation nodes in the cooperation cluster.

[0175] The selection method of the target cooperation cluster includes but is not limited to that the difference between the corresponding RSRP and the second threshold TH2 is maximum. The TH2 should be higher than TH1 and related to the number of nodes in the cooperation cluster.

[0176] Assuming that the source node selects several non-cooperative nodes to construct multiple candidate cooperative clusters according to the prior information of the system, for example, candidate cooperative cluster 1 (containing nodes 1, 3), candidate cooperative cluster 2 (containing nodes 1, 2, 3), candidate cooperative cluster 3 (containing nodes 2, 3), or randomly selects several better non-cooperative nodes to construct multiple candidate cooperative clusters, for example, candidate cooperative cluster 1 (containing nodes 1, 2), candidate cooperative cluster 2 (containing nodes 1, 2, 3). The RSRP of the multiple non-cooperative nodes in the candidate cooperative cluster is weighted and summed to obtain the RSRP corresponding to each cooperative cluster, as shown in Table 2.

[0177] Table 2 Cooperative cluster priority

[0178]

[0179]

[0180] The multiple candidate cooperative clusters are sorted, and a target cooperative cluster is selected and the above cooperative SSB resources are allocated to all cooperative nodes in the target cooperative cluster. The selection method of the target cooperative cluster includes but is not limited to that the difference between the cooperative cluster RSRP and the second threshold TH2 is the largest, wherein TH2 should be higher than TH1 and related to the number of nodes in the cooperative cluster. When the difference corresponding to multiple target cooperative clusters is the same, the target cooperative cluster including fewer nodes can be selected.

[0181] Assuming that the candidate cooperative cluster is obtained from the prior information, and the target cooperative cluster is candidate cooperative cluster 1 with the largest difference between RSRP and TH2 and the relatively least number of nodes.

[0182] Step 304, the source node sends a cooperative SSB cooperative request to the target node, and the nodes in the target cooperative cluster confirm (cooperative node cooperative request and confirmation link):

[0183] For mobile users with high-speed service demand, the experience continuity needs to be prioritized. TH2 can be adjusted or updated to switch early, reducing the adverse effects of request and confirmation delay.

[0184] The cooperative request and confirmation link are as follows:

[0185] The source node sends a cooperative request and cooperative SSB configuration information to the cooperative nodes in the target cooperative cluster. The cooperative nodes in the target cooperative cluster respond to the cooperative request and confirm cooperative transmission or non-cooperative transmission.

[0186] Step 305, the source node determines the information of the cooperative nodes, the cooperative SSB configuration information, and sends them to the terminal through RRC connection reconfiguration signaling according to the response of the cooperative nodes.

[0187] Specifically, in combination with the above example, the source node sends a cooperation request and cooperation SSB configuration information to cooperation nodes 1 and 3 of the target cooperation cluster 1. The cooperation nodes 1 and 3 respond to the cooperation request and confirm cooperation transmission. Then, the source node determines cooperation node information and cooperation SSB configuration information according to the response of the cooperation nodes, and sends the information to the terminal through RRC connection reconfiguration signaling.

[0188] Step 306: The source node controls the handover of the mobile terminal (handover link):

[0189] In the embodiment of the present application, if the service quality of the candidate non-cooperation node is good and the mobile user has no high-rate service request, the target non-cooperation node handover can be performed without applying for a cooperation SSB; if the service quality of the candidate non-cooperation node is good but the mobile user is performing a high-rate service or has a high-rate service request (a single non-cooperation node cannot meet the high-rate requirement), a cooperation SSB can be applied to guarantee user experience continuity; or the service quality of the candidate non-cooperation node is poor, a cooperation SSB can be applied to enhance the service quality.

[0190] If the aforementioned decision result is non-cooperation node handover, the source node only needs to initiate a handover request and perform handover to a single target node without applying for a cooperation SSB.

[0191] If the decision result is cooperation cluster handover, the source node can initiate a handover request and perform handover to the target cooperation cluster on the premise of cooperation SSB application and cooperation node confirmation, and the target cooperation cluster performs handover and finally realizes successful handover after completing admission control.

[0192] In combination with the above example, the source node sends a handover preparation request to the target cooperation cluster 1. The cooperation nodes 1 and 3 in the target cooperation cluster 1 confirm cooperation transmission. The target cooperation cluster 1 feeds back handover preparation success information, and the source node controls the terminal to complete handover to the target cooperation cluster 1.

[0193] As can be seen from the above description, when the distributed super-large-scale MIMO mobility handover lacks a cooperation SSB configuration premise, a cooperation target node handover mechanism can be established by applying for a cooperation SSB configuration, cooperation node request and confirmation, and cooperation information configuration to the terminal, which can guarantee user experience continuity for user high-rate service (such as AR / VR) mobility scenarios, and can enable the terminal to obtain better service quality after mobility handover for scenarios in which the service quality of the non-cooperation node is not particularly good.

[0194] The embodiment of the present application also provides a handover device applied to a first node. As shown in Figure 4 The handover device 400 includes:

[0195] The first acquisition module 401 is configured to acquire a measurement result of a terminal.

[0196] The first sending module 402 is configured to send an SSB cooperation request to target nodes in a target cooperation cluster when the measurement result meets a condition for applying for cooperation SSB, wherein the target cooperation cluster includes at least two target cooperation nodes.

[0197] The first processing module 403 is configured to control the terminal to perform handover to the target cooperation cluster when an acknowledgement cooperation transmission response sent by the target cooperation cluster according to the SSB cooperation request is received.

[0198] The condition for applying for cooperation SSB includes one or more of the following:

[0199] The terminal needs a high-rate service, and the RSRP of a single candidate non-cooperation node is greater than or equal to a first threshold value, but a single non-cooperation node cannot meet the demand of the high-rate service;

[0200] During movement of the terminal, the RSRP of all candidate non-cooperation nodes is less than the first threshold value, but the RSRP of at least one of the candidate non-cooperation nodes is greater than or equal to a second threshold value, and the first threshold value is greater than the second threshold value;

[0201] During movement of the terminal, the RSRP of at least one of the candidate non-cooperation nodes is greater than or equal to the first threshold value, and the difference between the RSRP of the at least one candidate non-cooperation node and the first threshold value is greater than or equal to a third threshold value.

[0202] The first sending module includes:

[0203] The allocation sub-module is configured to allocate cooperation SSB resources for the terminal, and obtain cooperation SSB configuration information.

[0204] The selection sub-module is configured to select target candidate non-cooperation nodes from candidate non-cooperation nodes, and form at least one candidate cooperation cluster.

[0205] The processing sub-module is configured to determine the target cooperation cluster from the candidate cooperation clusters, and send the SSB cooperation request to target nodes in the target cooperation cluster, wherein the SSB cooperation request includes the cooperation SSB configuration information.

[0206] The cooperation SSB resources allocated for the terminal are unoccupied cooperation SSB resources.

[0207] The obtaining sub-module is configured to perform any one of the following:

[0208] selecting at least two target candidate non-cooperative nodes from the candidate non-cooperative nodes according to the measurement results and prior information, to form the candidate cooperative cluster;

[0209] selecting at least two target candidate non-cooperative nodes from the candidate non-cooperative nodes according to the measurement results, to form the candidate cooperative cluster.

[0210] The processing submodule comprises:

[0211] The first obtaining submodule is configured to obtain an RSRP corresponding to each candidate cooperative cluster according to an RSRP of each candidate non-cooperative node in each candidate cooperative cluster.

[0212] The first selecting submodule is configured to select a target cooperative cluster from the candidate cooperative clusters according to the RSRP corresponding to each candidate cooperative cluster.

[0213] The sending submodule is configured to send the SSB cooperative request to a second node in the target cooperative cluster.

[0214] The first selecting submodule is configured to select, as the target cooperative cluster, a candidate cooperative cluster corresponding to a maximum difference between the RSRP and the fourth threshold.

[0215] When the difference between the RSRP corresponding to multiple candidate cooperative clusters and the fourth threshold is the same, the candidate cooperative cluster with a smaller number of cooperative nodes is selected as the target cooperative cluster.

[0216] The first processing module comprises:

[0217] The first sending submodule is configured to send information of the target cooperative cluster and cooperative SSB configuration information to the terminal.

[0218] The second sending submodule is configured to send a handover preparation request to the target cooperative cluster.

[0219] The first receiving submodule is configured to receive a handover preparation success message sent by the target cooperative cluster.

[0220] The first processing submodule is configured to control the terminal to perform handover to the target cooperative cluster according to the handover preparation success message.

[0221] The apparatus provided by the embodiments of the present application can execute the method embodiments, and the implementation principles and technical effects are similar, and thus will not be described here.

[0222] The embodiments of the present application further provide a handover apparatus applied to a second node. Figure 5 As shown in the figure, the handover apparatus 500 comprises:

[0223] The first receiving module 501 is configured to receive an SSB cooperation request sent by a first node.

[0224] The first sending module 502 is configured to send a response to the first node according to the SSB cooperation request, where the response includes a confirmation cooperation transmission response.

[0225] The first processing module 503 is configured to complete terminal switching to a target cooperation cluster with the first node.

[0226] The second node is a target cooperation node and is located in the target cooperation cluster.

[0227] The first processing module includes:

[0228] The first receiving submodule is configured to receive a switching preparation request sent by the first node.

[0229] The first sending submodule is configured to send a switching preparation success message to the first node.

[0230] The device provided in the embodiments of the present application can execute the method embodiments, and has similar implementation principles and technical effects, which will not be described here again.

[0231] The embodiments of the present application further provide a switching device applied to a first node. As shown in Figure 6 The switching device includes a processor 601 and a transceiver 602. The processor 601 is configured to:

[0232] Obtain a measurement result of a terminal.

[0233] When the measurement result meets a condition of applying for cooperation SSB, send an SSB cooperation request to a target node in a target cooperation cluster, where the target cooperation cluster includes at least two target cooperation nodes.

[0234] In a case where a confirmation cooperation transmission response sent by the target cooperation cluster according to the SSB cooperation request is received, control the terminal to switch to the target cooperation cluster.

[0235] The condition of applying for cooperation SSB includes one or more of the following:

[0236] The terminal needs a high-rate service, the RSRP of a single candidate non-cooperation node is greater than or equal to a first threshold, but a single non-cooperation node cannot meet the demand of the high-rate service.

[0237] In a moving process of the terminal, the RSRP of all candidate non-cooperation nodes is less than the first threshold, but the RSRP of at least one candidate non-cooperation node in the candidate non-cooperation nodes is greater than or equal to a second threshold, and the first threshold is greater than the second threshold.

[0238] In the moving process of the terminal, the RSRP of at least one of the candidate non-cooperative nodes is greater than or equal to the first threshold value, and the difference between the RSRP of the at least one candidate non-cooperative node and the first threshold value is greater than or equal to a third threshold value.

[0239] The processor is further configured to:

[0240] allocate a cooperative SSB resource to the terminal, and obtain cooperative SSB configuration information;

[0241] select a target candidate non-cooperative node from the candidate non-cooperative nodes to form at least one candidate cooperative cluster;

[0242] determine the target cooperative cluster from the candidate cooperative cluster, and send the SSB cooperation request to the target nodes in the target cooperative cluster, wherein the SSB cooperation request comprises the cooperative SSB configuration information.

[0243] The cooperative SSB resource allocated to the terminal is an unoccupied cooperative SSB resource.

[0244] The processor is further configured to perform any one of the following:

[0245] select at least two target candidate non-cooperative nodes from the candidate non-cooperative nodes according to the measurement results and prior information to form the candidate cooperative cluster;

[0246] select at least two target candidate non-cooperative nodes from the candidate non-cooperative nodes according to the measurement results to form the candidate cooperative cluster.

[0247] The processor is further configured to:

[0248] obtain the RSRP corresponding to each candidate cooperative cluster according to the RSRP of each candidate non-cooperative node in each candidate cooperative cluster;

[0249] select a target cooperative cluster from the candidate cooperative clusters according to the RSRP corresponding to each candidate cooperative cluster.

[0250] The processor is further configured to:

[0251] select the candidate cooperative cluster with the largest difference between the corresponding RSRP and the fourth threshold value as the target cooperative cluster.

[0252] When the differences between the RSRP corresponding to multiple candidate cooperative clusters and the fourth threshold value are the same, select the candidate cooperative cluster with fewer cooperative nodes as the target cooperative cluster.

[0253] The processor is further configured to:

[0254] send information of the target cooperation cluster and cooperation SSB configuration information to the terminal;

[0255] send a handover preparation request to the target cooperation cluster;

[0256] receive a handover preparation success message sent by the target cooperation cluster;

[0257] control the terminal to perform handover to the target cooperation cluster according to the handover preparation success message.

[0258] The apparatus provided in the embodiments of the present application can execute the method embodiments, and has similar implementation principles and technical effects, which will not be repeated here.

[0259] The embodiments of the present application further provide a handover apparatus applied to a second node. As shown in Figure 7 the handover apparatus comprises a processor 701 and a transceiver 702; the processor 701 is configured to:

[0260] receive an SSB cooperation request sent by a first node;

[0261] send a response to the first node according to the SSB cooperation request, wherein the response comprises a cooperation transmission confirmation;

[0262] complete handover of a terminal to a target cooperation cluster with the first node;

[0263] The second node is a target cooperation node and is located in the target cooperation cluster.

[0264] The processor is further configured to:

[0265] receive a handover preparation request sent by the first node;

[0266] send a handover preparation success message to the first node.

[0267] The apparatus provided in the embodiments of the present application can execute the method embodiments, and has similar implementation principles and technical effects, which will not be repeated here.

[0268] It should be noted that the division of units in the embodiments of the present application is illustrative, and is merely a logical function division. In actual implementation, another division mode can be used. In addition, each functional unit in each embodiment of the present application can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0269] The integrated unit, if implemented in the form of a software functional unit and sold or used as an independent product, can be stored in a processor-readable storage medium. Based on such an understanding, the technical solutions of the present application essentially or say the part that contributes to the prior art or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a number of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various media that can store program codes.

[0270] The embodiments of the present application also provide a communication device, which comprises a transceiver, a memory, a processor, and a program stored in the memory and executable on the processor, and the processor implements the steps in the handover method as described above when executing the program.

[0271] The embodiments of the present application also provide a readable storage medium, which stores a program, and the program is executable on a processor to implement various processes of the handover method embodiments and achieve the same technical effects. To avoid repetition, details are not described herein. The readable storage medium can be any available medium or data storage device accessible by the processor, including but not limited to a magnetic memory (such as a floppy disk, a hard disk, a magnetic tape, a magneto-optical disk (MO), etc.), an optical memory (such as a CD, a DVD, a BD, a HVD, etc.), and a semiconductor memory (such as a ROM, an EPROM, an EEPROM, a non-volatile memory (NAND FLASH), a solid-state disk (SSD), etc.).

[0272] It should be noted that, in this document, the term "comprising" or "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method, article or device including the element.

[0273] Those skilled in the art can clearly understand the above-mentioned embodiment method can be realized by means of software and necessary general hardware platform, of course, also can be realized by hardware, but in many cases, the former is a better embodiment. According to such understanding, the technical scheme of the present application can be embodied in the form of software product, and the computer software product is stored in a storage medium (such as ROM / RAM, disk, optical disk), including a plurality of instructions to make a terminal (which can be a mobile phone, computer, server, air conditioner, or network equipment, etc.) execute the method described in various embodiments of the present application.

[0274] The embodiments of the present application are described above in combination with the drawings, but the present application is not limited to the above-mentioned specific embodiments, and the above-mentioned specific embodiments are only illustrative, not limiting, and those skilled in the art can make many forms without departing from the purpose of the present application and the scope protected by the claims under the inspiration of the present application, which all belong to the protection of the present application.

Claims

1. A switching method applied to a first node, characterized in that, Distributed, ultra-large-scale MIMO systems applied to uncoordinated synchronization signal / physical broadcast channel signal block (SSB) configurations include: Obtain the measurement results from the terminal; When the measurement result meets the conditions for requesting a cooperative synchronization signal / physical broadcast channel signal block (SSB), an SSB cooperation request is sent to the target node in the target cooperation cluster, wherein the target cooperation cluster includes at least two target cooperation nodes. Upon receiving a confirmation of cooperation transmission response sent by the target cooperative cluster in accordance with the SSB cooperation request, the terminal is controlled to switch to the target cooperative cluster.

2. The method according to claim 1, characterized in that, The requirements for applying for a collaborative SSB include one or more of the following: The terminal requires high-speed services. The reference signal received power (RSRP) of a single candidate non-cooperative node is greater than or equal to a first threshold, but a single non-cooperative node cannot meet the requirements of the high-speed services. The high-speed services include augmented reality (AR) or virtual reality (VR). During the movement of the terminal, the RSRP of all candidate non-cooperative nodes is less than the first threshold, but the RSRP of at least one of the candidate non-cooperative nodes is greater than or equal to the second threshold, where the first threshold is greater than the second threshold. During the movement of the terminal, the RSRP of at least one of the candidate non-cooperative nodes is greater than or equal to the first threshold, and the difference between the RSRP of the at least one candidate non-cooperative node and the first threshold is greater than or equal to the third threshold.

3. The method according to claim 1, characterized in that, Sending an SSB cooperation request to the target node in the target cooperation cluster includes: Allocate cooperative SSB resources to the terminal and obtain cooperative SSB configuration information; Select target candidate non-cooperative nodes from the candidate non-cooperative nodes to form at least one candidate cooperative cluster; The target cooperative cluster is determined from the candidate cooperative clusters, and the SSB cooperative request is sent to the target node in the target cooperative cluster. The SSB cooperative request includes the cooperative SSB configuration information.

4. The method according to claim 3, characterized in that, The cooperative SSB resources allocated to the terminal are unoccupied cooperative SSB resources.

5. The method according to claim 3, characterized in that, From the candidate non-cooperative nodes, a target candidate non-cooperative node is selected to form at least one candidate cooperative cluster, including any one of the following: Based on the measurement results and prior information, at least two target candidate non-cooperative nodes are selected from the candidate non-cooperative nodes to form the candidate cooperative cluster; Based on the measurement results, at least two target candidate non-cooperative nodes are randomly selected from the candidate non-cooperative nodes to form the candidate cooperative cluster.

6. The method according to claim 3, characterized in that, Determining the target cooperative cluster from the candidate cooperative clusters includes: Based on the RSRP of each candidate non-cooperative node in each candidate cooperative cluster, the RSRP corresponding to each candidate cooperative cluster is obtained; Based on the RSRP corresponding to each candidate cooperative cluster, a target cooperative cluster is selected from the candidate cooperative clusters.

7. The method according to claim 6, characterized in that, The step of selecting a target cooperative cluster from the candidate cooperative clusters based on the RSRP corresponding to each candidate cooperative cluster includes: The candidate cooperative cluster with the largest difference between the corresponding RSRP and the fourth threshold is taken as the target cooperative cluster.

8. The method according to claim 7, characterized in that, When the difference between the RSRP of multiple candidate cooperative clusters and the fourth threshold is the same, the candidate cooperative cluster with fewer cooperative nodes is selected as the target cooperative cluster.

9. The method according to claim 1, characterized in that, The step of controlling the terminal to switch to the target cooperative cluster includes: Send the target cooperative cluster information and cooperative SSB configuration information to the terminal; Send a handover preparation request to the target cooperative cluster; Receive the handover preparation success message sent by the target cooperative cluster; Based on the successful handover preparation message, the terminal is controlled to handover to the target cooperative cluster.

10. A switching method applied to a second node, characterized in that, Distributed, ultra-large-scale MIMO systems applied to uncoordinated synchronization signal / physical broadcast channel signal block (SSB) configurations include: Receive the SSB collaboration request sent by the first node; Based on the SSB cooperation request, a response is sent to the first node, the response including a confirmation of cooperation transmission; Complete the handover from the terminal to the target cooperative cluster with the first node; The second node is the target collaboration node, located in the target collaboration cluster. The SSB collaboration request is sent when the terminal's measurement results meet the conditions for requesting collaboration with an SSB.

11. The method according to claim 10, characterized in that, The process of switching the terminal to the target cooperative cluster with the first node includes: Receive the handover preparation request sent by the first node; Send a handover preparation success message to the first node.

12. A switching device applied to a first node, characterized in that, Distributed, ultra-large-scale MIMO systems applied to uncoordinated synchronization signal / physical broadcast channel signal block (SSB) configurations include: The first acquisition module is used to acquire the measurement results from the terminal; The first sending module is used to send an SSB cooperation request to the target node in the target cooperation cluster when the measurement result meets the conditions for applying for SSB cooperation, wherein the target cooperation cluster includes at least two target cooperation nodes; The first processing module is used to control the terminal to switch to the target cooperative cluster upon receiving a confirmation of cooperative transmission response sent by the target cooperative cluster according to the SSB cooperative request.

13. A switching device applied to a second node, characterized in that, Distributed, ultra-large-scale MIMO systems applied to uncoordinated synchronization signal / physical broadcast channel signal block (SSB) configurations include: The first receiving module is used to receive the SSB cooperation request sent by the first node; The first sending module is configured to send a response to the first node according to the SSB cooperation request, the response including a confirmation of cooperation transmission response; The first processing module is used to switch the terminal to the target cooperative cluster with the first node; The second node is the target collaboration node, located in the target collaboration cluster. The SSB collaboration request is sent when the terminal's measurement results meet the conditions for requesting collaboration with an SSB.

14. A switching device applied to a first node, characterized in that, A distributed, ultra-large-scale multiple-input multiple-output (MIMO) system for use with a non-cooperative synchronization signal / physical broadcast channel signal block (SSB) configuration includes: a processor and a transceiver; the processor is used for: Obtain the measurement results from the terminal; When the measurement result meets the conditions for requesting a cooperative SSB, an SSB cooperation request is sent to the target node in the target cooperative cluster, wherein the target cooperative cluster includes at least two target cooperative nodes; Upon receiving a confirmation of cooperation transmission response sent by the target cooperative cluster in accordance with the SSB cooperation request, the terminal is controlled to switch to the target cooperative cluster.

15. A switching device applied to a second node, characterized in that, A distributed, ultra-large-scale multiple-input multiple-output (MIMO) system for use with a non-cooperative synchronization signal / physical broadcast channel signal block (SSB) configuration includes: a processor and a transceiver; the processor is used for: Receive the SSB collaboration request sent by the first node; Based on the SSB cooperation request, a response is sent to the first node, the response including a confirmation of cooperation transmission; Complete the handover from the terminal to the target cooperative cluster with the first node; The second node is the target collaboration node, located in the target collaboration cluster. The SSB collaboration request is sent when the terminal's measurement results meet the conditions for requesting collaboration with an SSB.

16. A communication device, comprising: A transceiver, a memory, a processor, and a program stored in the memory and executable on the processor; characterized in that the processor is configured to read the program in the memory to implement the steps of the switching method as described in any one of claims 1 to 9; or to implement the steps of the switching method as described in any one of claims 10 to 11.

17. A readable storage medium for storing a program, characterized in that, When the program is executed by the processor, it implements the steps of the switching method as described in any one of claims 1 to 9; or implements the steps of the switching method as described in any one of claims 10 to 11.

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