Wireless communication method and device, communication node and storage medium

Abstract

The invention provides a wireless communication method and device, a communication node and a storage medium. The method is applied to a secondary base station node in dual-link communication, and comprises the following steps: receiving secondary node key modification indication information; and performing cell switching according to the secondary node key modification indication information. According to the invention, flow channel drop of communication between the secondary base station node and the UE caused by key switching is avoided, non-inductive secondary base station node key switching for the UE under dual-link communication is realized, and the system communication stability is improved.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and in particular, to a wireless communication method, apparatus, communication node, and storage medium. Background Art

[0002] In a communication network, the encryption between a terminal device (User Equipment, UE) and a base station is based on the key between the two. For example, in a 5G network, the communication between the base station and the UE is encrypted based on the base station key (Key of the next Generation Node B, KgNB).

[0003] In a dual-connection scenario, the UE will establish communication connections with two different base stations simultaneously and communicate. The key in the UE is shared with the key in the Master Node (MN). The key update in the MN will not affect the communication process between the UE and the MN. However, during the communication process between the UE and the Secondary Node (SN), when the Packet Data Convergence Protocol COUNT (PDCP COUNT) is about to flip, the network needs to update the key. At this time, the SN will send a Secondary Node ModificationRequired message to the MN, and this message contains a key change indication; then the MN will send a Secondary Node Modification Request message containing the new key KSN to the SN to complete the key update of the SN.

[0004] Since the SN needs to use the new key for communication after the key update, but if a service is being transmitted between the UE and the SN, the key update will cause a short interruption of the service data, which will further cause the traffic to drop, resulting in a decrease in communication stability. Summary of the Invention

[0005] This application provides a wireless communication method, apparatus, communication node, and storage medium to solve the problem of the decrease in communication stability caused by the interruption of service data between the UE and the SN during the key update of the SN in a dual-connection scenario.

[0006] To achieve the above object, an embodiment of this application provides a wireless communication method, which is applied to a secondary base station node in dual-connection communication and includes:

[0007] Receiving secondary node key modification indication information;

[0008] Performing a cell handover according to the secondary node key modification indication information.

[0009] To achieve the above object, an embodiment of the present application provides another wireless communication method, which is applied to a master base station node in dual-link communication and includes:

[0010] Sending secondary node key modification indication information to a secondary base station node, so that the secondary base station node performs cell handover according to the secondary node key modification indication information;

[0011] Receiving secondary node key modification response information, and constructing radio resource connection configuration information according to the secondary node key modification response information;

[0012] Sending the radio resource connection configuration information to a terminal device corresponding to the secondary base station node, so that the terminal device switches to the cell after the secondary base station node's handover according to the radio resource connection configuration information.

[0013] To achieve the above object, an embodiment of the present application provides another wireless communication method, which is applied to a terminal device in dual-link communication and includes:

[0014] Receiving radio resource connection configuration information;

[0015] Performing cell handover according to the radio resource connection configuration information;

[0016] Wherein, the radio resource connection configuration information is information constructed by the master base station node according to the secondary node key modification response information and the secondary base station node count value;

[0017] Wherein, the secondary node key modification response information is the response information after the secondary base station node performs cell handover according to the secondary node key modification indication information, and the secondary node key modification response information includes target cell configuration information.

[0018] To achieve the above object, an embodiment of the present application provides a wireless communication device, which is applied to a secondary base station node in dual-link communication and includes:

[0019] An indication information receiving module, configured to receive secondary node key modification indication information;

[0020] A first cell handover module, configured to perform cell handover according to the secondary node key modification indication information.

[0021] To achieve the above object, an embodiment of the present application provides a wireless communication device, which is applied to a master base station node in dual-link communication and includes:

[0022] An indication information sending module, configured to send secondary node key modification indication information to a secondary base station node, so that the secondary base station node performs cell handover according to the secondary node key modification indication information;

[0023] A configuration information construction module, configured to receive the secondary node key modification response information and construct radio resource connection configuration information based on the secondary node key modification response information;

[0024] A configuration information sending module, configured to send the radio resource connection configuration information to a terminal device corresponding to the secondary base station node, so that the terminal device switches to the cell after the secondary base station node switches according to the radio resource connection configuration information.

[0025] To achieve the above object, an embodiment of the present application provides a wireless communication device, which is applied to a terminal device in dual-link communication and includes:

[0026] A configuration information receiving module, configured to receive radio resource connection configuration information;

[0027] A second cell switching module, configured to perform cell switching according to the radio resource connection configuration information;

[0028] Wherein, the radio resource connection configuration information is information constructed by the master base station node based on the secondary node key modification response information and the secondary base station node count value;

[0029] Wherein, the secondary node key modification response information is the response information after the secondary base station node performs cell switching according to the secondary node key modification indication information, and the secondary node key modification response information includes target cell configuration information.

[0030] To achieve the above object, an embodiment of the present application provides a communication node, including: a memory, a processor, a program stored on the memory and executable on the processor, and a data bus for realizing connection communication between the processor and the memory. When the program is executed by the processor, the steps of the wireless communication method according to any one of the embodiments of the present application are implemented.

[0031] To achieve the above object, an embodiment of the present application provides a storage medium for computer-readable storage. The storage medium stores one or more programs, and the one or more programs can be executed by one or more processors to implement the steps of the wireless communication method according to any one of the embodiments of the present application.

[0032] The wireless communication method, device, communication node, and storage medium provided by the embodiments of the present application receive secondary node key modification indication information and perform cell handover according to the secondary node key modification indication information. By adopting the above technical solution, in a dual-link communication scenario, when the secondary base station node needs to perform key switching, it will modify the key of the secondary base station node and perform cell handover according to the received secondary node key modification indication information. Since the cell handover has a corresponding information caching mechanism, the secondary base station node will not cause the interruption of the ongoing service data during key switching, avoiding the traffic drop in the communication between the secondary base station node and the UE due to key switching, realizing seamless key switching of the secondary base station node for the UE in dual-link communication, and improving the communication stability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a timing example diagram of an SN requesting a key in a dual-link scenario in the prior art;

[0034] Figure 2 It is a schematic flowchart of a wireless communication method provided by an embodiment of the present application;

[0035] Figure 3 It is a schematic flowchart of another wireless communication method provided by an embodiment of the present application;

[0036] Figure 4 It is a schematic flowchart of a wireless communication method provided by an embodiment of the present application;

[0037] Figure 5 It is an example diagram of a wireless communication process for a secondary base station node to initiate key update provided by an embodiment of the present application;

[0038] Figure 6 It is an example diagram of a wireless communication process for a primary base station node to initiate key update provided by an embodiment of the present application;

[0039] Figure 7 It is a schematic structural diagram of a wireless communication device provided by an embodiment of the present application;

[0040] Figure 8 It is a schematic structural diagram of a wireless communication device provided by an embodiment of the present application;

[0041] Figure 9 It is a schematic structural diagram of a wireless communication device provided by an embodiment of the present application;

[0042] Figure 10 It is a schematic structural diagram of a communication node provided by an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0043] To make the objectives, technical solutions and advantages of this application more clear and understandable, the embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be arbitrarily combined with each other.

[0044] The steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. And although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in a different order than here.

[0045] In a communication network, to build a dual-link communication scenario, the UE, MN, and SN will first complete the SN addition process to establish a link between the UE and the SN. During the communication between the UE and the SN, the PDCP COUNT will gradually increase and wrap around when it reaches the maximum value. At this time, the SN needs to replace the new key pair to encrypt the transmitted data. Figure 1 It is a timing example diagram of the SN requesting a key in the dual-link scenario in the prior art, as Figure 1 shown. First, the SN sends a secondary base station node modification request (SN Modification Required) message to the MN. This message contains key change indication information. After receiving the secondary base station node modification request message, the MN allocates a new key KSN for the SN according to the key change indication information therein. Then, the MN sends a secondary base station node modification feedback (SN Modification Request) message containing KSN to the SN, so that the SN can update the key to KSN based on the secondary base station node modification feedback message and use KSN to reconstruct the communication with the UE. However, when the SN updates the key for the cell communicating with the UE, it needs to first interrupt the communication between the UE and the SN. If there is still traffic between the UE and the SN during the key update, it will cause a short interruption of the traffic, and then lead to traffic drop, resulting in a decline in communication stability.

[0046] To solve the above problems, this application provides a wireless communication method, which can realize the seamless update of the SN key for the UE and improve the communication stability.

[0047] It can be understood that the wireless communication methods provided by the embodiments of the present application can be applicable to the fourth-generation mobile communication system (the 4th Generation mobile communication technology, 4G), such as the Long-Term Evolution (LTE) system; or the fifth-generation mobile communication system (the 5th Generation mobile communication technology, 5G), such as the access network and Cloud Radio Access Network (CRAN) adopting the new radio access technology (NewRAT), etc., or in the future sixth-generation mobile communication system. The embodiments of the present application do not limit this.

[0048] In an exemplary embodiment, Figure 2 It is a schematic flowchart of a wireless communication method provided by an embodiment of the present application. This method can be applicable to the situation of key update for the SN in a dual-link scenario. This method can be executed by a wireless communication device, which can be executed by software and / or hardware and integrated on a communication node. Exemplarily, this communication node can be a base station serving as the SN in a dual-link communication scenario.

[0049] As Figure 2 shown, the wireless communication method provided by the embodiments of the present application specifically includes the following steps:

[0050] S110. Receive secondary node key modification indication information.

[0051] In this embodiment, the secondary node key modification indication information can be specifically understood as the information sent from the MN to the SN for indicating the SN to modify the key.

[0052] Specifically, when the SN itself determines that a key update is required, or the MN determines that a key update is required for the SN, the MN will generate secondary node key modification indication information containing the new key required by the SN and cell change indication information for indicating the SN to perform a cell change while performing a key switch, so that the SN can receive the secondary node key modification indication information sent from the MN to the SN.

[0053] S120. Perform a cell change according to the secondary node key modification indication information.

[0054] Specifically, when the SN receives the secondary node key modification indication information, it parses the secondary node key modification indication information, and based on the cell handover indication information in the secondary node key modification indication information, selects a target cell different from the current cell and meeting the communication requirements among the cells corresponding to the SN, so as to perform cell handover from the current cell to the target cell, and uses the new secondary node key included in the secondary node key modification indication information as the secondary node key required for data communication in the target cell.

[0055] The wireless communication method provided by the embodiment of the present application receives the secondary node key modification indication information and performs cell handover according to the secondary node key modification indication information. By adopting the above technical solution, when the secondary base station node in the dual-link communication scenario needs to perform key handover, it will modify the key and perform cell handover on the secondary base station node according to the received secondary node key modification indication information. Since the cell handover has a corresponding information caching mechanism, the secondary base station node will not cause the interruption of the service data being transmitted during the key handover, avoiding the traffic drop of the communication between the secondary base station node and the UE due to the key handover, realizing the secondary base station node key handover without perception for the UE in the dual-link communication, and improving the communication stability of the system.

[0056] In one embodiment, when the SN itself determines that key update is required, before receiving the secondary node key modification request information, it further includes: sending the secondary node key modification request information to the master base station node.

[0057] In this embodiment, the secondary node key modification request information can be specifically understood as the key update indication information sent from the SN to the MN to indicate that the SN needs to obtain a new key.

[0058] Specifically, when the SN itself determines that key update is required, it will generate the key modification request information including the key update indication information and send the key modification request information to the corresponding MN to request to obtain a new key.

[0059] In one example, sending the secondary node key modification request information to the master base station node includes: sending the secondary node key modification request information to the master base station node when the secondary node key update condition is met.

[0060] In this embodiment, the secondary node key update condition can be specifically understood as a condition that is preset according to the actual situation and is used to trigger the SN to update the key of the cell that is currently communicating in the dual-link scenario. Exemplarily, the secondary node key update condition includes that the PDCP COUNT is greater than a preset flip critical value, and can also include the condition for triggering the SN to update the key. The embodiments of the present application do not limit this. Exemplarily, the preset flip critical value can be the previous value of the PDCP COUNT flip, or can be a value set according to the actual situation and less than the PDCP COUNT flip value. The embodiments of the present application do not limit this.

[0061] Specifically, when the SN meets the secondary node key update condition, it can be considered that its own key needs to be updated. At this time, a key modification request message including key update indication information will be generated, and the key modification request message will be sent to the corresponding MN to request a new key from the MN.

[0062] In one example, performing a cell handover according to the secondary node key modification indication information includes: performing a cell handover according to the cell handover indication in the secondary node key modification indication information.

[0063] In one embodiment, after performing a cell handover according to the secondary node key modification indication information, it further includes:

[0064] Determining the handover cell as the target cell;

[0065] Generating a secondary node key modification response message according to the target cell, and sending the key modification response message to the master base station node, so that the master base station node configures the radio resource connection for the terminal device corresponding to the secondary base station node according to the secondary node key modification response message.

[0066] In this embodiment, the secondary node key modification response message can be specifically understood as the information sent by the SN to the MN to respond to the secondary node key modification indication information and to inform the MN of the cell handover result of the SN.

[0067] Specifically, after the SN performs a cell handover based on the secondary node key modification indication information, the cell to which it is handed over can be considered as the cell that will communicate using the new key in the secondary node key modification indication information, and can also be considered as the cell to which the UE needs to establish a connection during the subsequent communication process. At this time, the cell after the handover is determined as the target cell. And the information required to access the target cell is written into the secondary node key modification response information fed back by the SN to the MN. After the SN sends the secondary node key modification response information to the corresponding MN, the MN can configure the radio resource connection for the UE corresponding to the SN according to the information for accessing the target cell in the secondary node key modification response information, so that the UE can access the target cell for data transmission according to this information during the subsequent communication process.

[0068] In one embodiment, the node key modification response information includes target cell configuration information for accessing the target cell.

[0069] In this embodiment, the target cell configuration information can be specifically understood as the information required to access the target cell. Exemplarily, the target cell configuration information may include information such as the target cell identification number, etc., and the embodiments of the present application do not limit this.

[0070] In one embodiment, after sending the key modification response information to the master base station node, it further includes: when receiving the radio resource connection configuration response information of the terminal device, enabling the new secondary node key in the secondary node key modification indication information to perform data transmission with the terminal device based on the new secondary node key.

[0071] In this embodiment, the radio resource connection configuration response information can be specifically understood as the information sent by the UE to the SN to inform the SN that the UE has switched to the target cell and can use the new secondary node key to reconstruct the communication with the target cell of the SN.

[0072] Specifically, after the SN sends the key modification response information to the MN, it will wait for the UE to complete the cell handover and radio resource connection configuration. When receiving the radio resource connection configuration response information of the UE, it can be considered that the UE has switched to the target cell and clearly knows the new secondary node key that can communicate with the target cell. At this time, the new secondary node key carried in the secondary node key modification indication information can be enabled in the target cell of the SN, so that the UE and the SN can perform data transmission based on the new secondary node key.

[0073] In the wireless communication method provided by the embodiments of the present application, when the SN itself needs to perform key switching, requests a key from the MN, and then receives the secondary node key modification indication information, or when the MN needs to perform key switching on the SN and sends the secondary node key modification indication information to the SN, the secondary base station node will perform key modification and cell handover according to the received secondary node key modification indication information, and then after completing the cell handover, feedback the target cell configuration information of the corresponding target cell to the MN, so that the MN can configure the UE according to the target cell configuration information, and enable the UE to complete the cell handover corresponding to the SN, and further enable the UE and the SN to perform data transmission using the new key in the switched cell. Since the cell handover has a corresponding information caching mechanism, the secondary base station node will not cause the interruption of the ongoing service data during key switching, avoiding the traffic drop in the communication between the secondary base station node and the UE due to key switching, realizing the seamless key switching of the secondary base station node for the UE under dual-link communication, and improving the communication stability of the system.

[0074] In an exemplary embodiment, Figure 3 It is a flowchart of another wireless communication method provided by the embodiments of the present application. This method can be applied to the situation of key update for the SN in a dual-link scenario. This method can be executed by a wireless communication device, which can be executed by software and / or hardware and integrated on a communication node. Exemplarily, the communication node can be a base station acting as the MN in a dual-link communication scenario.

[0075] As Figure 3 shown, the wireless communication method provided by the embodiments of the present application specifically includes the following steps:

[0076] S210. Send secondary node key modification indication information to the secondary base station node, so that the secondary base station node performs cell handover according to the secondary node key modification indication information.

[0077] Specifically, when it is determined that the SN needs to perform key switching, the secondary node key modification indication information carrying the new secondary node key required by the SN and the cell handover indication is sent to the SN, so that the SN can perform cell handover in response to the cell handover indication in the secondary node key modification indication information, and feedback the handover result of the cell handover to the MN.

[0078] S220. Receive the secondary node key modification response information, and construct radio resource connection configuration information according to the secondary node key modification response information.

[0079] In this embodiment, the radio resource connection configuration information can be specifically understood as the information sent by the MN to the UE to inform the UE of the new cell to which the corresponding SN for communication has been switched, and the configuration information required for the UE to access the new cell and perform encrypted communication with the new cell.

[0080] Specifically, when the MN receives the secondary node key modification response message, it can consider that the SN has completed the handover to the new cell and configured a new secondary node key in the new cell. The MN will parse the secondary node key modification response message, determine the new cell to which the SN has handed over from it, and the information required for accessing the new cell, and then can construct the radio resource connection configuration information corresponding to the UE of the SN according to the information required for accessing the new cell in the secondary node key modification response message and the information related to the SN key modification.

[0081] S230: Send the radio resource connection configuration information to the terminal device corresponding to the secondary base station node, so that the terminal device can switch to the cell after the handover of the secondary base station node according to the radio resource connection configuration information.

[0082] Specifically, the MN sends the constructed radio resource connection configuration information to the UE corresponding to the SN. After the UE parses the radio resource connection configuration information, it can perform a cell handover based on the information contained therein for accessing the new cell after the handover of the SN. Since there is a corresponding information caching mechanism during the cell handover process, the UE and the SN will not cause the interruption of the ongoing service data during the cell handover. And since the radio resource connection configuration information contains the information related to the SN key modification, after the UE parses the radio resource connection configuration information, it can determine the new key of the SN. Furthermore, after the UE switches to the cell after the handover of the SN, it can use the same new key as the new cell in the SN to perform data transmission with the new cell.

[0083] In one embodiment, sending the secondary node key modification indication message to the secondary base station node includes: when receiving the secondary node key modification request message, sending the secondary node key modification indication message to the secondary base station node; or when the master node key update condition is met, sending the secondary node key modification indication message to the secondary base station node.

[0084] In this embodiment, the master node key update condition can be specifically understood as being pre-set according to the actual situation and used to trigger the MN to update the key of the SN that is communicating in the dual-link scenario. Exemplarily, the master node key update condition includes the access stratum key update or exceeding the key operation period, and can also include other conditions that can trigger the MN to update the key. The embodiments of the present application do not limit this.

[0085] Specifically, the trigger for the MN to send the secondary node key modification indication information to the SN can be divided into two cases. In one case, when the SN itself determines that key modification is required, the SN will send a secondary node key modification request information to the MN, which carries a key update indication. When the MN receives the secondary node key modification request information, it will determine the new key required by the SN in response to the key update indication therein, and carry the new key and the cell handover indication in the generated secondary node key modification indication information and send it to the SN. In the other case, when the MN itself determines that the SN needs to be modified, it generates a new key that the SN needs to replace, and carries the new key and the cell handover indication in the generated secondary node key modification indication information and sends it to the SN. Among them, it can be considered that when the master node key update condition is met, the MN has a need to modify the key of the SN.

[0086] In one embodiment, the radio resource connection configuration information constructed according to the secondary node key modification response information includes:

[0087] Construct the radio resource connection configuration information according to the target cell configuration information and the secondary base station node count value in the secondary node key modification response information.

[0088] Specifically, the target cell configuration information for accessing the cell information after the SN handover is included in the secondary node key modification response information. Since the key updated by the SN is constructed by the MN based on its own key and the secondary base station node count value (SN COUNTER) corresponding to the key modified by the SN this time, and since the UE shares the key with the MN, the MN only needs to write the SN COUNTER and the target cell configuration information into the constructed radio resource connection configuration information, so that the UE can construct the key updated by the SN based on the SN COUNTER and the key shared with the MN after receiving the radio resource connection configuration information. Furthermore, after completing the cell handover according to the target cell configuration information, data transmission is performed with the new cell of the SN using the constructed new key.

[0089] The wireless communication method provided by the embodiments of the present application enables the MN in a dual-link communication scenario to send secondary node key modification indication information to the SN when determining that the corresponding SN needs to perform key switching, so as to modify the key of the SN and perform cell handover. Furthermore, after receiving the secondary node key modification response information after the SN switches the cell and updates the key in response to the secondary node key modification indication information, generate radio resource connection configuration information for enabling the UE corresponding to the SN to perform cell handover and key update and send it to the corresponding UE, so that the UE can complete the cell handover corresponding to the SN and modify the key to the new key of the cell corresponding to the SN, and use the new key for data transmission. Since the cell handover has a corresponding information caching mechanism, the SN will not cause the interruption of the ongoing service data during key switching, avoiding the traffic drop between the secondary base station node and the UE due to key switching. Moreover, during the key update process of the SN, the UE will only perform one cell handover and key update, realizing a seamless secondary base station node key switching for the UE in dual-link communication and improving the communication stability of the system.

[0090] In an exemplary embodiment, Figure 4 is a schematic flowchart of a wireless communication method provided by the embodiments of the present application. This method can be applied to the situation of key update for the SN in a dual-link scenario. This method can be executed by a wireless communication device, which can be executed by software and / or hardware and integrated on a communication node. Exemplarily, the communication node can be a wireless communication device serving as the UE in a dual-link communication scenario.

[0091] As Figure 4 shown, the wireless communication method provided by the embodiments of the present application specifically includes the following steps:

[0092] S310. Receive radio resource connection configuration information.

[0093] Among them, the radio resource connection configuration information is information constructed by the master base station node based on the secondary node key modification response information and the secondary base station node count value.

[0094] Among them, the secondary node key modification response information is the response information after the secondary base station node performs cell handover according to the secondary node key modification indication information. The secondary node key modification response information includes target cell configuration information.

[0095] Specifically, when the SN needs to modify the key, the MN will send secondary node key modification indication information to the SN. After the SN performs cell handover and key modification according to the secondary node key modification indication information, it will send a secondary node key modification response information containing the target cell configuration information required to access its handover target cell to the MN. The MN constructs radio resource connection configuration information based on the target cell configuration information in the secondary node key modification response information and the secondary base station node count value used by itself to generate the new key of the SN, and sends the radio resource connection configuration information to the corresponding UE, so that the UE can reconfigure its own communication state after receiving the radio resource connection configuration information.

[0096] S320. Perform cell handover according to the radio resource connection configuration information.

[0097] Specifically, the UE can parse the received radio resource connection configuration information to determine that it contains the target cell configuration information, that is, the information required for the UE to access the SN cell during the continued communication process. Furthermore, the UE can switch to the corresponding SN cell according to the target cell configuration information in the radio resource connection configuration information. This cell is the cell after the SN performs cell handover according to the secondary node key modification indication information.

[0098] In one embodiment, performing cell handover according to the radio resource connection configuration information includes: determining the target cell according to the target cell configuration information in the radio resource connection configuration information; switching to the target cell.

[0099] Specifically, after the UE parses the radio resource connection configuration information, it can obtain the target cell configuration information. Since the target cell configuration information contains information for accessing the corresponding cell, such as ID, etc., the cell corresponding to the target cell configuration information can be determined as the target cell, and then the UE can switch to the target cell based on the above information for accessing the cell.

[0100] In one embodiment, after performing cell handover according to the radio resource connection configuration information, it further includes: sending a radio resource connection configuration response information to the secondary base station node; enabling the key corresponding to the secondary base station node determined according to the secondary base station node count value in the radio resource connection configuration information to perform data transmission with the secondary base station node based on the key.

[0101] In this embodiment, the radio resource connection configuration response information can be specifically understood as the response information sent by the UE to its corresponding SN to indicate that the UE has switched to the target cell in the SN and can perform data transmission with the SN using the updated key of the SN.

[0102] Specifically, to establish a communication connection between the UE and the new cell of the SN, after the UE completes cell handover based on the radio resource connection configuration information, it needs to generate radio resource connection configuration response information corresponding to the radio resource connection configuration information, and send the radio resource connection configuration response information to the SN correspondingly. Since a new key is used in the new cell of the SN, before the UE and the SN perform data transmission based on the new cell, the UE needs to determine the new key corresponding to the new cell of the SN based on the SN COUNTER in the radio resource connection configuration information, and start the new key simultaneously in the UE and the SN, so that the UE can perform data transmission with the SN based on the new key.

[0103] The wireless communication method provided by the embodiments of the present application enables the UE in the dual-link communication scenario to switch to the target cell after cell handover of the SN requesting key update when receiving the radio resource connection configuration information sent by the MN, and then perform data transmission with the SN after key modification and cell handover in the target cell. Since cell handover has a corresponding information caching mechanism, and the UE performs cell handover based on the radio resource connection configuration information given by the SN after key update and cell handover, when the UE switches to the new cell of the SN, it can not only update the key under the new cell, but also avoid the interruption of the ongoing service data due to key and cell updates, and avoid the traffic drop in the communication between the secondary base station node and the UE caused by key switching. Moreover, during the key update process of the SN, the UE only performs one cell handover and key update, realizing a seamless key switch of the secondary base station node for the UE in dual-link communication, and improving the communication stability of the system.

[0104] The following is an exemplary description of the present application. The key update of the SN and the wireless communication process are described through the following embodiments:

[0105] Embodiment 1

[0106] Figure 5 As shown in the example diagram of the wireless communication process for the secondary base station node to initiate key update provided by the embodiments of the present application, as Figure 5 shown, the dual-link communication involves three parties: the MN, the SN, and the UE. The wireless communication process for the SN to initiate key update is specifically as follows:

[0107] 1. Before being put into use, the SN addition process will be completed among the UE, the MN, and the SN to establish a link between the UE and the SN.

[0108] 2. Data transmission is performed between the UE and the SN.

[0109] 3. When the secondary node key update condition is met, the SN decides to update the key. During the data transmission between the UE and the SN, the value of the PDCP COUNT will gradually increase. Taking the 5G network as an example, the value of the PDCP COUNT is 32 bits. Therefore, as the value of the PDCP COUNT increases, the value of the PDCP COUNT will flip. It can be determined that the PDCP COUNT is about to flip as the secondary node key update condition.

[0110] 4. The SN sends a secondary node key modification request message to the MN. The secondary node key modification request message carries a key update indication, which indicates that the SN needs a new key.

[0111] 5. The MN sends a secondary node key modification indication message to the SN. The secondary node key modification indication message carries a new key and a cell handover indication. The cell handover indication is used to instruct the SN to perform a cell handover and communicate with the UE using the new key after the cell handover.

[0112] 6. The SN replies to the MN with a secondary node key modification response message. The secondary node key modification response message contains a cell handover indication response, including information required to access the SN's new cell, such as the new cell ID, etc.

[0113] 7. The MN sends radio resource connection configuration information to the UE. The radio resource connection configuration message contains the SNCOUNTER and the information required to access the SN's new cell received in step 6.

[0114] 8. The UE switches to the SN's new cell.

[0115] 9. The UE sends a radio resource connection configuration response message to the SN.

[0116] 10. The UE and the SN activate the new key. After activating the new key, the PDCP COUNT will be reset.

[0117] 11. The UE and the SN perform data transmission based on the new key.

[0118] Embodiment 2

[0119] Figure 6 This is an example diagram of a wireless communication process for key update initiated by the master base station node provided by the embodiments of the present application. As Figure 6 shown, in the dual-link communication, a total of three parties, namely the UE, the MN, and the SN, are involved. The wireless communication process for key update initiated by the MN is specifically as follows:

[0120] 1. Before being put into use, the SN addition process will be completed among the UE, the MN, and the SN to establish a link between the UE and the SN.

[0121] 2. Data transmission occurs between the UE and the SN.

[0122] 3. During the data transmission between the UE and the SN, the MN may decide to update the key of the SN for various reasons. The reasons can be summarized as the master node key update conditions. For example, when the MN updates its own access stratum key, it needs to update the key of the SN, or when the MN determines that the SN key has exceeded the key operation period, it needs to actively update the key of the SN, etc. The embodiments of this application do not limit this.

[0123] 4. The MN sends a secondary node key modification indication message to the SN. The secondary node key modification indication message carries a new key and a cell handover indication.

[0124] 5. The SN replies to the MN with a secondary node key modification response message. The secondary node key modification response message includes a cell handover indication response, which contains the information required for accessing the new cell of the SN.

[0125] 6. The MN sends radio resource connection configuration information to the UE. The radio resource connection configuration message includes SNCOUNTER and the information required for accessing the new cell of the SN received in step 5.

[0126] 7. The UE switches to the new cell of the SN.

[0127] 8. The UE sends a radio resource connection configuration response message to the SN.

[0128] 9. The UE and the SN activate the new key. After activating the new key, the PDCP COUNT will be reset.

[0129] 10. The UE and the SN perform data transmission based on the new key.

[0130] In an exemplary embodiment, Figure 7 FIG. is a schematic structural diagram of a wireless communication device provided by an embodiment of this application. This device is applied to a secondary base station node in dual-link communication, as Figure 7 shown. The device includes:

[0131] An indication information receiving module 410, configured to receive a secondary node key modification indication message.

[0132] A first cell handover module 420, configured to perform cell handover according to the secondary node key modification indication message.

[0133] The wireless communication device provided by the embodiment of the present application enables the secondary base station node in the dual-link communication scenario to modify the key of the secondary base station node and perform cell handover according to the received secondary node key modification indication information when key handover is required. Since the cell handover has a corresponding information caching mechanism, the secondary base station node will not cause the interruption of the service data being transmitted during key handover, avoiding the traffic drop between the secondary base station node and the UE due to key handover, realizing the seamless key handover of the secondary base station node for the UE in dual-link communication, and improving the communication stability of the system.

[0134] In one embodiment, before receiving the secondary node key modification request information, it further includes: sending the secondary node key modification request information to the primary base station node.

[0135] In one embodiment, sending the secondary node key modification request information to the primary base station node includes: when the secondary node key update condition is met, sending the secondary node key modification request information to the primary base station node.

[0136] In one embodiment, performing cell handover according to the secondary node key modification indication information includes: performing cell handover according to the cell handover indication in the secondary node key modification indication information.

[0137] In one embodiment, after performing cell handover according to the secondary node key modification indication information, it further includes:

[0138] Determining the handover cell as the target cell; generating secondary node key modification response information according to the target cell, and sending the key modification response information to the primary base station node, so that the primary base station node configures the radio resource connection for the terminal device corresponding to the secondary base station node according to the secondary node key modification response information.

[0139] In one embodiment, the secondary node key modification response information includes target cell configuration information for accessing the target cell.

[0140] In one embodiment, after sending the key modification response information to the primary base station node, it further includes: when receiving the radio resource connection configuration response information of the terminal device, enabling the new secondary node key in the secondary node key modification indication information to perform data transmission with the terminal device based on the new secondary node key.

[0141] In one embodiment, the secondary node key update condition includes that the packet data convergence protocol (PDCP) count value is greater than a preset flip critical value.

[0142] The wireless communication device proposed in this embodiment and the wireless communication method proposed in the above embodiment belong to the same inventive concept. The technical details not described in detail in this embodiment can be referred to in any of the above embodiments, and this embodiment has the same beneficial effects as the execution of the wireless communication method.

[0143] In an exemplary embodiment, Figure 8 is a schematic structural diagram of a wireless communication device provided by an embodiment of the present application. This device is applied to a master base station node in dual-link communication, such as Figure 8 as shown. The device includes:

[0144] An indication information sending module 510, configured to send secondary node key modification indication information to a secondary base station node, so that the secondary base station node performs a cell handover according to the secondary node key modification indication information.

[0145] A configuration information construction module 520, configured to receive secondary node key modification response information and construct radio resource connection configuration information according to the secondary node key modification response information.

[0146] A configuration information sending module 530, configured to send the radio resource connection configuration information to a terminal device corresponding to the secondary base station node, so that the terminal device switches to the cell after the secondary base station node's handover according to the radio resource connection configuration information.

[0147] For the wireless communication device provided by the embodiment of the present application, when the MN in the dual-link communication scenario determines that the corresponding SN needs to perform a key handover, it will send secondary node key modification indication information to the SN to modify the key and perform a cell handover on the SN. Furthermore, after receiving the secondary node key modification response information after the SN switches the cell and updates the key in response to the secondary node key modification indication information, it generates radio resource connection configuration information for enabling the UE corresponding to the SN to perform a cell handover and key update and sends it to the corresponding UE, so that the UE can complete the cell handover corresponding to the SN and change the key to the new key of the cell corresponding to the SN to use the new key for data transmission. Since the cell handover has a corresponding information caching mechanism, the SN will not cause the interruption of the ongoing service data during the key handover, avoiding the traffic drop between the secondary base station node and the UE caused by the key handover. And during the key update process of the SN, the UE will only perform one cell handover and key update, realizing a secondary base station node key handover that is imperceptible to the UE in dual-link communication and improving the system communication stability.

[0148] In one embodiment, sending the secondary node key modification indication information to the secondary base station node includes:

[0149] When receiving the secondary node key modification request information, sending the secondary node key modification indication information to the secondary base station node; or

[0150] When the master node key update condition is satisfied, sending the secondary node key modification indication information to the secondary base station node.

[0151] In one embodiment, the radio resource connection configuration information constructed according to the secondary node key modification response information includes:

[0152] Construct the radio resource connection configuration information according to the target cell configuration information and the secondary base station node count value in the secondary node key modification response information.

[0153] In one embodiment, the primary node key update conditions include access stratum key update or exceeding the key operation period.

[0154] The wireless communication device proposed in this embodiment and the wireless communication method proposed in the above embodiment belong to the same inventive concept. The technical details not described in detail in this embodiment can be referred to any of the above embodiments, and this embodiment has the same beneficial effects as the execution of the wireless communication method.

[0155] In an exemplary embodiment, Figure 9 It is a schematic structural diagram of a wireless communication device provided by an embodiment of the present application. This device is applied to a terminal device in dual-link communication, such as Figure 9 As shown, the device includes:

[0156] A configuration information receiving module 610, configured to receive radio resource connection configuration information.

[0157] A second cell switching module 620, configured to perform cell switching according to the radio resource connection configuration information.

[0158] Wherein, the radio resource connection configuration information is information constructed by the primary base station node based on the secondary node key modification response information and the secondary base station node count value; wherein, the secondary node key modification response information is the response information after the secondary base station node performs cell switching according to the secondary node key modification indication information, and the secondary node key modification response information includes target cell configuration information.

[0159] The wireless communication device provided by the embodiments of the present application enables the UE in a dual-link communication scenario to switch to the target cell after cell handover for requesting to update the key SN when receiving the radio resource connection configuration information sent by the MN, and then perform data transmission with the SN after key modification and cell handover in the target cell. Since cell handover has a corresponding information caching mechanism, and the UE performs cell handover based on the radio resource connection configuration information given by the SN after key update and cell handover, when the UE switches to the new cell of the SN, not only can the key be updated in the new cell, but also the ongoing service data will not be interrupted due to key and cell updates, avoiding the traffic drop between the secondary base station node and the UE caused by key switching. Moreover, during the key update process of the SN, the UE only performs one cell handover and key update, realizing a seamless key switch for the secondary base station node in dual-link communication for the UE, and improving the communication stability of the system.

[0160] In one embodiment, performing cell handover according to the radio resource connection configuration information includes: determining the target cell according to the target cell configuration information in the radio resource connection configuration information; and switching to the target cell.

[0161] In one embodiment, after performing cell handover according to the radio resource connection configuration information, it further includes:

[0162] Sending a radio resource connection configuration response information to the secondary base station node; and enabling the key corresponding to the secondary base station node determined according to the secondary base station node count value in the radio resource connection configuration information to perform data transmission with the secondary base station node based on the key.

[0163] The wireless communication device proposed in this embodiment and the wireless communication method proposed in the above embodiment belong to the same inventive concept. The technical details not described in detail in this embodiment can be referred to in any of the above embodiments, and this embodiment has the same beneficial effects as the execution of the wireless communication method.

[0164] The embodiments of the present application further provide a communication node, Figure 10 which is a schematic structural diagram of a communication node provided by the embodiments of the present application. As Figure 10 shown, the communication node provided by the embodiments of the present application includes a memory 720, a processor 710, and a computer program stored on the memory and executable on the processor. When the processor 710 executes the program, it implements the above wireless communication method.

[0165] The communication node may further include a memory 720; the processor 710 in the communication node may be one or more, Figure 10Take a processor 710 as an example; the memory 720 is used to store one or more programs; the one or more programs are executed by the one or more processors 710, so that the one or more processors 710 implement the wireless communication method described in the embodiments of the present application.

[0166] The communication node further includes: a communication device 730, an input device 740, and an output device 750.

[0167] The processor 710, the memory 720, the communication device 730, the input device 740, and the output device 750 in the communication node can be connected by a bus or other means. Figure 10 Take the connection by bus as an example.

[0168] The input device 740 can be used to receive input digital or character information, and generate key signal inputs related to the user settings and function controls of the communication node. The output device 750 may include a display device such as a display screen.

[0169] The communication device 730 may include a receiver and a transmitter. The communication device 730 is configured to perform information transceiver communication according to the control of the processor 710.

[0170] The memory 720, as a computer-readable storage medium, can be configured to store software programs, computer-executable programs, and modules, such as the program instructions / modules corresponding to the wireless communication method described in the embodiments of the present application (for example, the indication information receiving module 410 and the first cell handover module 420 in the wireless communication device; or the indication information sending module 510, the configuration information construction module 520, and the configuration information sending module 530; or the configuration information receiving module 610 and the second cell handover module 620). The memory 720 may include a program storage area and a data storage area. Among them, the program storage area may store an operating system and application programs required for at least one function; the data storage area may store data created according to the use of the communication node, etc. In addition, the memory 720 may include a high-speed random access memory, and may further include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state storage devices. In some instances, the memory 720 may further include a memory remotely provided relative to the processor 710, and these remote memories can be connected to the communication node through a network. Examples of the above networks include, but are not limited to, the Internet, an enterprise intranet, a local area network, a mobile communication network, and combinations thereof.

[0171] The embodiments of the present application further provide a storage medium, which stores a computer program, and when the computer program is executed by a processor, it implements any one of the wireless communication methods described in the embodiments of the present application.

[0172] Optionally, the wireless communication method is applied to a secondary base station node in dual-link communication and includes: receiving secondary node key modification indication information; and performing a cell handover according to the secondary node key modification indication information.

[0173] Optionally, the wireless communication method is applied to a primary base station node in dual-link communication and includes: sending secondary node key modification indication information to a secondary base station node, so that the secondary base station node performs a cell handover according to the secondary node key modification indication information; receiving secondary node key modification response information, and constructing radio resource connection configuration information according to the secondary node key modification response information; and sending the radio resource connection configuration information to a terminal device corresponding to the secondary base station node, so that the terminal device switches to the cell after the handover of the secondary base station node according to the radio resource connection configuration information.

[0174] Optionally, the wireless communication method is applied to a terminal device in dual-link communication and includes: receiving radio resource connection configuration information; and performing a cell handover according to the radio resource connection configuration information; where the radio resource connection configuration information is information constructed by a primary base station node according to secondary node key modification response information and a secondary base station node count value; and where the secondary node key modification response information is a response information after the secondary base station node performs a cell handover according to the secondary node key modification indication information, and the secondary node key modification response information includes target cell configuration information.

[0175] The computer storage medium of the embodiments of the present application may adopt any combination of one or more computer-readable media. The computer-readable medium may be a computer-readable signal medium or a computer-readable storage medium. The computer-readable storage medium may be, for example, but not limited to: an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the above. More specific examples (non-exhaustive list) of the computer-readable storage medium include: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable CD-ROM, an optical storage device, a magnetic storage device, or any suitable combination of the above. The computer-readable storage medium may be any tangible medium that contains or stores a program, and the program may be used by or in conjunction with an instruction execution system, apparatus, or device.

[0176] A computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, which carries computer-readable program code. Such propagated data signals may take many forms, including but not limited to: electromagnetic signals, optical signals, or any suitable combination of the foregoing. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device.

[0177] The program code contained on a computer-readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, optical fiber cable, Radio Frequency (RF), etc., or any suitable combination of the foregoing.

[0178] The computer program code for performing the operations of this application may be written in one or more programming languages or combinations thereof. The programming languages include object-oriented programming languages such as Java, Smalltalk, C++, and also include conventional procedural programming languages such as the "C" language or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, executed as a stand-alone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer (e.g., through the Internet using an Internet service provider).

[0179] As described above, the above are only exemplary embodiments of this application and are not intended to limit the protection scope of this application.

[0180] Those skilled in the art should understand that the term user terminal covers any suitable type of wireless user equipment, such as a mobile phone, a portable data processing device, a portable network browser, or a vehicle-mounted mobile station.

[0181] Generally speaking, various embodiments of this application may be implemented in hardware or dedicated circuits, software, logic, or any combination thereof. For example, some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software that can be executed by a controller, a microprocessor, or other computing devices, although this application is not limited thereto.

[0182] Embodiments of the present application can be implemented by a data processor of a mobile device executing computer program instructions, for example, in a processor entity, or by hardware, or by a combination of software and hardware. The computer program instructions can be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages.

[0183] Any block diagram of a logical process in the accompanying drawings of the present application can represent program steps, or can represent interconnected logical circuits, modules, and functions, or can represent a combination of program steps and logical circuits, modules, and functions. The computer program can be stored in a memory. The memory can have any type suitable for the local technical environment and can be implemented using any suitable data storage technology, such as but not limited to read-only memory (ROM), random access memory (RAM), optical memory devices and systems (such as digital video disc (DVD) or compact disk (CD), etc.). The computer-readable medium can include non-transitory storage media. The data processor can be any type suitable for the local technical environment, such as but not limited to general-purpose computers, special-purpose computers, microprocessors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), and processors based on multi-core processor architectures.

[0184] By way of illustrative and non-limiting examples, a detailed description of exemplary embodiments of the present application has been provided above. However, considering the accompanying drawings and the claims, various modifications and adjustments to the above embodiments will be obvious to those skilled in the art without departing from the scope of the present application. Therefore, the proper scope of the present application will be determined according to the claims.

Claims

1. A wireless communication method, characterized in that, applied to a secondary base station node in dual-link communication, includes: Receiving secondary node key modification indication information; Performing cell handover according to the secondary node key modification indication information.

2. The wireless communication method according to claim 1, characterized in that, before receiving the secondary node key modification request information, further includes: Sending a secondary node key modification request information to the primary base station node.

3. The wireless communication method according to claim 2, characterized in that, the sending the secondary node key modification request information to the primary base station node includes: When the secondary node key update condition is satisfied, sending a secondary node key modification request information to the primary base station node.

4. The wireless communication method according to claim 1, characterized in that, the performing cell handover according to the secondary node key modification indication information includes: Performing cell handover according to the cell handover indication in the secondary node key modification indication information.

5. The wireless communication method according to claim 1, characterized in that, after performing cell handover according to the secondary node key modification indication information, further includes: Determining the handover cell as the target cell; Generating a secondary node key modification response information according to the target cell, and sending the key modification response information to the primary base station node, so that the primary base station node configures wireless resource connection for the terminal device corresponding to the secondary base station node according to the secondary node key modification response information.

6. The wireless communication method according to claim 5, characterized in that, the secondary node key modification response information includes target cell configuration information for accessing the target cell.

7. The wireless communication method according to claim 5, characterized in that, after sending the key modification response information to the primary base station node, further includes: When receiving the wireless resource connection configuration response information of the terminal device, enabling the new secondary node key in the secondary node key modification indication information to perform data transmission with the terminal device based on the new secondary node key.

8. The wireless communication method according to any one of claims 3-7, characterized in that, the secondary node key update condition includes that the packet data convergence protocol (PDCP) count value is greater than a preset flip critical value.

9. A wireless communication method, characterized in that, applied to a primary base station node in dual-link communication, includes: Sending secondary node key modification indication information to the secondary base station node, so that the secondary base station node performs cell handover according to the secondary node key modification indication information; Receiving secondary node key modification response information, and constructing wireless resource connection configuration information according to the secondary node key modification response information; Sending the wireless resource connection configuration information to the terminal device corresponding to the secondary base station node, so that the terminal device switches to the cell after the secondary base station node handover according to the wireless resource connection configuration information.

10. The wireless communication method according to claim 9, characterized in that, the sending the secondary node key modification indication information to the secondary base station node includes: When receiving the secondary node key modification request information, send the secondary node key modification indication information to the secondary base station node; or When the primary node key update condition is satisfied, send the secondary node key modification indication information to the secondary base station node.

11. The wireless communication method according to claim 9, wherein,[[]]END]] The radio resource connection configuration information constructed according to the secondary node key modification response information includes:[[]]END]] Construct the radio resource connection configuration information according to the target cell configuration information and the secondary base station node count value in the secondary node key modification response information.

12. The wireless communication method according to claim 10, wherein,[[]]END]] The primary node key update condition includes access stratum key update or exceeding the key operation period.

13. A wireless communication method,[[]]END]] wherein,[[]]END]] Applied to the terminal device in dual-link communication, including:[[]]END]] Receive the radio resource connection configuration information; Perform cell handover according to the radio resource connection configuration information; wherein, the radio resource connection configuration information is the information constructed by the primary base station node based on the secondary node key modification response information and the secondary base station node count value; wherein, the secondary node key modification response information is the response information after the secondary base station node performs cell handover according to the secondary node key modification indication information, and the secondary node key modification response information includes the target cell configuration information.

14. The wireless communication method according to claim 13, wherein,[[]]END]] The performing cell handover according to the radio resource connection configuration information includes:[[]]END]] Determine the target cell according to the target cell configuration information in the radio resource connection configuration information; Switch to the target cell.

15. The wireless communication method according to claim 13, wherein,[[]]END]] After the performing cell handover according to the radio resource connection configuration information, further include:[[]]END]] Send the radio resource connection configuration response information to the secondary base station node; Enable the key corresponding to the secondary base station node determined according to the secondary base station node count value in the radio resource connection configuration information, and perform data transmission with the secondary base station node based on the key.

16. A wireless communication device,[[]]END]] wherein,[[]]END]] Applied to the secondary base station node in dual-link communication, including:[[]]END]] An indication information receiving module, configured to receive the secondary node key modification indication information; A first cell handover module, configured to perform cell handover according to the secondary node key modification indication information.

17. A wireless communication device,[[]]END]] wherein,[[]]END]] Applied to the primary base station node in dual-link communication, including:[[]]END]] An indication information sending module, configured to send the secondary node key modification indication information to the secondary base station node, so that the secondary base station node performs cell handover according to the secondary node key modification indication information; A configuration information construction module, configured to receive the secondary node key modification response information and construct the radio resource connection configuration information according to the secondary node key modification response information; A configuration information sending module, configured to send the radio resource connection configuration information to the terminal device corresponding to the secondary base station node, so that the terminal device switches to the cell after the secondary base station node performs handover according to the radio resource connection configuration information.

18. A wireless communication device, characterized in that, applied to a terminal device in dual-link communication, comprising: a configuration information receiving module, configured to receive radio resource connection configuration information; a second cell switching module, configured to perform cell switching according to the radio resource connection configuration information; wherein the radio resource connection configuration information is information constructed by a master base station node based on a secondary node key modification response message and a secondary base station node count value; wherein the secondary node key modification response message is a response message after the secondary base station node performs cell switching according to secondary node key modification indication information, and the secondary node key modification response message includes target cell configuration information.

19. A communication node, characterized in that, comprising: a memory, a processor, a program stored on the memory and executable on the processor, and a data bus for implementing connection communication between the processor and the memory, wherein when the program is executed by the processor, the steps of the wireless communication method according to any one of claims 1-15 are implemented.

20. A storage medium for computer-readable storage, characterized in that, the storage medium stores one or more programs, and the one or more programs can be executed by one or more processors to implement the steps of the wireless communication method according to any one of claims 1-15.

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