Terminal connection cell switching method, device, computer equipment and storage medium

Abstract

The present application relates to a terminal connection cell switching method, device, equipment and medium. It can be applied to a first terminal in a dual-transmission and selective reception system, which also includes a second terminal, and a communication link is established between the first terminal and the control plane RRC layer of the second terminal; the method includes: when the first terminal meets the connection cell switching condition, obtaining the timing information of the first timer; when the timing information returns to zero, executing the terminal connection cell switching process, and sending a terminal switching notification message to the second terminal; used to instruct the second terminal to set the timing information of the second timer to the preset timing information; wherein the preset timing information is greater than the switching delay of the terminal connection cell switching process, and before the timing information of the second timer returns to zero, the second terminal is prohibited from executing the terminal connection cell switching process. The use of this method can reduce the transmission delay of data transmission during the switching process and improve the transmission reliability of the switching process.

Description

Technical Field

[0001] The present application relates to the field of wireless communication technologies, and in particular to a method, apparatus, computer equipment, storage medium, and computer program product for switching a terminal connection cell. Background Art

[0002] With the development of wireless communication technology, a technology that uses dual-transmission and selective reception technology for data transmission and reception has emerged. This technology sets up two data transmission and reception terminals, namely the master terminal and the slave terminal. When sending data, the data to be sent can be input into the master terminal and the slave terminal respectively, and the master terminal and the slave terminal respectively realize data transmission. During the data reception process, the data is received by the master terminal and the slave terminal respectively, and the terminal with better signal strength is selected for data reception.

[0003] At present, dual-transmit selective reception technology is mainly used in application scenarios with relatively fixed locations. In this application scenario, the delay and reliability of data transmission can be guaranteed. However, if the dual-transmit selective reception technology needs to be used in a moving scenario with an unfixed location, the change in location may cause the data transmitting and receiving terminal to switch the connection cell. This switching process will increase the data transmission delay and reduce the reliability of data transmission. Therefore, the terminal connection cell switching method in the existing dual-transmit selective reception system cannot guarantee the transmission delay and transmission reliability of data transmission during the switching process. Summary of the Invention

[0004] Based on this, it is necessary to provide a terminal connection cell switching method, device, computer equipment, computer-readable storage medium and computer program product that can reduce the transmission delay of data transmission and improve transmission reliability to address the above technical problems.

[0005] In a first aspect, the present application provides a terminal connection cell switching method, which is applied to a first terminal in a dual-transmit selective reception system, wherein the dual-transmit selective reception system also includes a second terminal, and a communication link is established between the first terminal and the control plane RRC layer of the second terminal; the method includes:

[0006] When the first terminal meets the connection cell switching condition, obtaining timing information of a first timer set by the first terminal in the control plane RRC layer;

[0007] When the timing information of the first timer returns to zero, the terminal connection cell switching process is executed, and terminal switching notification information is sent to the second terminal through the control plane RRC layer; the terminal switching notification information is used to instruct the second terminal to set the timing information of the second timer set by the second terminal in the control plane RRC layer to the preset timing information; wherein the preset timing information is greater than the switching delay of the terminal connection cell switching process, and before the timing information of the second timer returns to zero, the second terminal is prohibited from executing the terminal connection cell switching process.

[0008] In one embodiment, when the cell after the first terminal is switched contains multiple access frequency bands, the terminal connection cell switching process is executed, including: obtaining the pre-switching access frequency band of the first terminal in the cell before switching; obtaining the target access frequency band that is the same as the pre-switching access frequency band from the multiple access frequency bands contained in the cell after switching; and accessing the target access frequency band in the cell after switching when it is determined that the second terminal has not accessed the target access frequency band.

[0009] In one embodiment, after obtaining the target access frequency band that is the same as the access frequency band before the switching, it also includes: when it is determined that the second terminal has accessed the target access frequency band, obtaining the first frequency band to be accessed with the strongest NR signal other than the target access frequency band from the multiple access frequency bands; and accessing the first frequency band to be accessed in the cell after the switching.

[0010] In one embodiment, after obtaining the pre-switching access frequency band of the first terminal in the pre-switching cell, it also includes: when the multiple access frequency bands do not include an access frequency band that is the same as the pre-switching access frequency band, obtaining from the multiple access frequency bands a second frequency band to be accessed that the second terminal has not accessed and that has the strongest NR signal; and accessing the second frequency band to be accessed in the post-switching cell.

[0011] In one embodiment, when the first terminal is the main terminal of the dual-transmit selective reception system, the method further includes: when the dual-transmit selective reception system is turned on, obtaining the third to-be-accessed frequency band with the strongest NR signal in the cell when the dual-transmit selective reception system is turned on; the cell when the system is turned on includes multiple access frequency bands; accessing the third to-be-accessed frequency band in the cell when the system is turned on, and sending frequency band access notification information to the second terminal through the control plane RRC layer; the frequency band access notification information is used to notify the second terminal to access the fourth to-be-accessed frequency band with the strongest NR signal among the multiple access frequency bands of the cell when the system is turned on, except the third to-be-accessed frequency band.

[0012] In one embodiment, when the first terminal is a slave terminal of the dual-transmit selective reception system, the method further includes: when the dual-transmit selective reception system is turned on, receiving frequency band access notification information sent by the second terminal; the frequency band access notification information records the accessed frequency band of the second terminal in the cell when the system is turned on; the cell when the system is turned on includes multiple access frequency bands; accessing the access frequency band with the strongest NR signal in the cell when the system is turned on, except for the accessed frequency band.

[0013] In one of the embodiments, after obtaining the timing information of the first timer set by the first terminal in the control plane RRC layer, it also includes: if the timing information of the first timer has not returned to zero, prohibiting the execution of the terminal connection cell switching process and obtaining a preset waiting time; after the preset waiting time has passed, returning to the step of obtaining the timing information of the first timer set by the first terminal in the control plane RRC layer until the timing information of the first timer returns to zero.

[0014] In one embodiment, the method further includes: upon receiving terminal switching notification information sent by the second terminal, setting the timing information of the first timer to the preset timing information.

[0015] In a second aspect, the present application further provides a terminal connection cell switching device, which is applied to a first terminal in a dual-transmit selective reception system, wherein the dual-transmit selective reception system also includes a second terminal, and the first terminal establishes a communication link with the control plane RRC layer of the second terminal; the device includes:

[0016] a timing information acquisition module, configured to acquire timing information of a first timer set by the first terminal at the control plane RRC layer when the first terminal meets a connection cell switching condition;

[0017] A connection cell switching module is used to execute a terminal connection cell switching process when the timing information of the first timer returns to zero, and send terminal switching notification information to the second terminal through the control plane RRC layer; the terminal switching notification information is used to instruct the second terminal to set the timing information of the second timer set by the second terminal in the control plane RRC layer to preset timing information; wherein the preset timing information is greater than the switching delay of the terminal connection cell switching process, and before the timing information of the second timer returns to zero, the second terminal is prohibited from executing the terminal connection cell switching process.

[0018] In a third aspect, the present application further provides a computer device. The computer device includes a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the following steps are performed:

[0019] When the first terminal meets the connection cell switching condition, obtaining timing information of a first timer set by the first terminal in the control plane RRC layer;

[0020] When the timing information of the first timer returns to zero, the terminal connection cell switching process is executed, and terminal switching notification information is sent to the second terminal through the control plane RRC layer; the terminal switching notification information is used to instruct the second terminal to set the timing information of the second timer set by the second terminal in the control plane RRC layer to the preset timing information; wherein the preset timing information is greater than the switching delay of the terminal connection cell switching process, and before the timing information of the second timer returns to zero, the second terminal is prohibited from executing the terminal connection cell switching process.

[0021] In a fourth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the following steps:

[0022] When the first terminal meets the connection cell switching condition, obtaining timing information of a first timer set by the first terminal in the control plane RRC layer;

[0023] When the timing information of the first timer returns to zero, the terminal connection cell switching process is executed, and terminal switching notification information is sent to the second terminal through the control plane RRC layer; the terminal switching notification information is used to instruct the second terminal to set the timing information of the second timer set by the second terminal in the control plane RRC layer to the preset timing information; wherein the preset timing information is greater than the switching delay of the terminal connection cell switching process, and before the timing information of the second timer returns to zero, the second terminal is prohibited from executing the terminal connection cell switching process.

[0024] In a fifth aspect, the present application further provides a computer program product. The computer program product includes a computer program that, when executed by a processor, implements the following steps:

[0025] When the first terminal meets the connection cell switching condition, obtaining timing information of a first timer set by the first terminal in the control plane RRC layer;

[0026] When the timing information of the first timer returns to zero, the terminal connection cell switching process is executed, and terminal switching notification information is sent to the second terminal through the control plane RRC layer; the terminal switching notification information is used to instruct the second terminal to set the timing information of the second timer set by the second terminal in the control plane RRC layer to the preset timing information; wherein the preset timing information is greater than the switching delay of the terminal connection cell switching process, and before the timing information of the second timer returns to zero, the second terminal is prohibited from executing the terminal connection cell switching process.

[0027] The above-mentioned terminal connection cell switching method, device, computer equipment, storage medium and computer program product can be applied to the first terminal in a dual-transmission and selective reception system, which also includes a second terminal, and a communication link is established between the first terminal and the control plane RRC layer of the second terminal; when the first terminal meets the connection cell switching conditions, the first terminal obtains the timing information of the first timer set by the first terminal in the control plane RRC layer; when the timing information of the first timer returns to zero, the terminal connection cell switching process is executed, and the terminal switching notification information is sent to the second terminal through the control plane RRC layer; the terminal switching notification information is used to instruct the second terminal to set the timing information of the second timer set by the second terminal in the control plane RRC layer to the preset timing information; wherein the preset timing information is greater than the switching delay of the terminal connection cell switching process, and before the timing information of the second timer is not returned to zero, the second terminal is prohibited from executing the terminal connection cell switching process. The present application obtains the timing information of the first timer set in the control plane RRC layer of the first terminal when the first terminal meets the connection cell switching condition, and executes the terminal connection cell switching process only when the timing information returns to zero. After that, the control plane RRC layer can be used to send terminal switching notification information to the second terminal, so that the second terminal sets the timing information of the second timer set in the control plane RRC layer to the preset timing information that is greater than the switching delay of the terminal connection cell switching process, and prohibits the second terminal from executing the terminal connection cell switching process before the timing information of the second timer returns to zero. This can ensure that the second terminal is prohibited from performing connection cell switching during the first terminal's connection cell switching process, thereby avoiding the first terminal and the second terminal being in the switching state at the same time, thereby reducing the transmission delay of data transmission during the switching process and improving the transmission reliability of the switching process. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a diagram of an application environment of a method for switching a terminal connection cell in an embodiment;

[0029] Figure 2 1 is a flow chart of a method for switching a cell connected to a terminal in one embodiment;

[0030] Figure 3 1 is a flow chart of executing a terminal connection cell handover process in one embodiment;

[0031] Figure 4 A schematic diagram of a process flow for powering on a master terminal of a dual-transmit and selectively receive system according to an embodiment;

[0032] Figure 5 A schematic diagram of a process flow of powering on a slave terminal of a dual-transmit and selective-receive system according to an embodiment;

[0033] Figure 6 1 is a flow chart of a method for switching a cell connected to a terminal in another embodiment;

[0034] Figure 7 A schematic diagram of URLLC remote test latency in one embodiment;

[0035] Figure 8 This is a scatter plot of the URLLC DT test delay in one embodiment;

[0036] Figure 9 Schematic diagram of the structure of a URLLC transmission system based on dual-frequency dual-transmit and selective reception in one embodiment;

[0037] Figure 10 A schematic diagram of an access process of a dual-transmit and selective-receive system in one embodiment;

[0038] Figure 11 A schematic diagram of a terminal switching process in a dual-transmit and selective-receive system according to an embodiment;

[0039] Figure 12 This is a structural block diagram of a terminal connection cell switching device in one embodiment;

[0040] Figure 13 FIG. 1 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0042] The terminal connection cell switching method provided in the embodiment of the present application can be applied to Figure 1In the dual-transmission selective reception system shown, the dual-transmission selective reception system may include a first terminal 101 and a second terminal 102, and the first terminal 101 and the second terminal 102 establish a communication link in the control plane RRC layer. Specifically, when the first terminal 101 detects that the connection cell switching condition is met, it may first obtain the timing information of the first timer set in the control plane RRC layer of the first terminal 101. If the timing information of the first timer is reset to zero, the first terminal 101 may execute the terminal connection cell switching process, and may also send the terminal switching notification information to the second terminal 102 through the control plane RRC layer. After receiving the terminal switching notification information, the second terminal 102 may set the timing information of the second timer set by the second terminal 102 in the control plane RRC layer to a preset timing information that is greater than the switching delay of the terminal connection cell switching process, and if the timing information of the second timer is not reset to zero, the second terminal 102 will be prohibited from executing the terminal connection cell switching process to avoid the first terminal 101 and the second terminal 102 being in the connection cell switching state at the same time. The first terminal 101 and the second terminal 102 may be information transceiver devices such as smart phones or communication circuit boards used for communication.

[0043] In one embodiment, Figure 2 As shown, a terminal connection cell switching method is provided, and the method is applied to Figure 1 Taking the first terminal 101 in the example as an example, the method includes the following steps:

[0044] Step S201: When the first terminal 101 meets the connection cell switching condition, the timing information of the first timer set by the first terminal 101 in the control plane RRC layer is obtained.

[0045] Among them, the first terminal 101 refers to a communication terminal used for sending and receiving information in a dual-transmission selective reception system, and the connection cell switching condition refers to a pre-set condition for the terminal to switch the connection cell. For example, when the position of the terminal changes, it moves from a certain connection cell A to an adjacent connection cell B. At this time, the signal strength of the connection cell A decreases, and the signal strength of the connection cell B increases. At this time, the terminal satisfies the connection cell switching condition. The control plane RRC layer refers to the RRC layer in the 5G layer 3 protocol stack, and the first timer is a timer set on the control plane RRC layer of the first terminal 101. The timer can be used to record timing information.

[0046] Specifically, when the first terminal 101 meets the connection cell switching conditions and thus performs connection cell switching, the first terminal 101 can first obtain the timing information recorded in the first timer from the timer set on the control plane RRC layer of the first terminal 101, that is, the first timer.

[0047] In step S202, when the timing information of the first timer returns to zero, the terminal connection cell switching process is executed, and the terminal switching notification information is sent to the second terminal 102 through the control plane RRC layer; the terminal switching notification information is used to instruct the second terminal 102 to set the timing information of the second timer set by the second terminal 102 in the control plane RRC layer to the preset timing information; wherein the preset timing information is greater than the switching delay of the terminal connection cell switching process, and before the timing information of the second timer returns to zero, the second terminal 102 is prohibited from executing the terminal connection cell switching process.

[0048] The second terminal 102 refers to another terminal other than the first terminal 101 in the dual-transmit selective reception system. The second terminal 102 can establish a communication link with the first terminal 101 at the control plane RRC layer to achieve a communication connection. The terminal switching notification information is sent by the first terminal 101 to inform the second terminal 102 that the first terminal 101 is currently performing a terminal connection cell switching process. This notification information can be transmitted via the control plane RRC layer. The second timer refers to a timer set on the control plane RRC layer of the second terminal 102. Similar to the first timer, the second timer can also be used to record timing information.

[0049] In this embodiment, in order to ensure that the first terminal 101 and the second terminal 102 are not in the connection cell switching state at the same time, the first terminal 101 or the second terminal 102 can only execute the terminal connection cell switching process when the corresponding timing information returns to zero. Specifically, when the timing information of the first timer returns to zero, it can be represented that the second terminal 102 is not currently executing the terminal connection cell switching process, so the first terminal 101 can execute the terminal connection cell switching process. At the same time, in order to avoid the situation where the second terminal 102 also executes the terminal connection cell switching process while the first terminal 101 is executing the terminal connection cell switching process, the first terminal 101 can also send a terminal switching notification message to the second terminal 102. After the second terminal 102 receives the terminal switching notification message, it can set the timing information of its corresponding timer, that is, the second timer, to a pre-set timing information. The pre-set timing information is greater than the switching delay of the terminal connection cell switching process to ensure that when the timing information of the second timer returns to zero, the first terminal 101 has completed the terminal connection cell switching process. And if the timing information of the second timer is not reset to zero, the second terminal 102 will be prohibited from executing the terminal connection cell switching process. In this way, it can be ensured that when the first terminal 101 executes the terminal connection cell switching process, the second terminal 102 is prohibited from executing the terminal connection cell switching process.

[0050] The above-mentioned terminal connection cell switching method can be applied to the first terminal 101 in a dual-transmission and selective reception system, which also includes a second terminal 102, and a communication link is established between the first terminal 101 and the control plane RRC layer of the second terminal 102; when the first terminal 101 meets the connection cell switching condition, the first terminal 101 obtains the timing information of the first timer set by the first terminal 101 in the control plane RRC layer; when the timing information of the first timer returns to zero, the terminal connection cell switching process is executed, and the terminal switching notification information is sent to the second terminal 102 through the control plane RRC layer; the terminal switching notification information is used to instruct the second terminal 102 to set the timing information of the second timer set by the second terminal 102 in the control plane RRC layer to the preset timing information; wherein the preset timing information is greater than the switching delay of the terminal connection cell switching process, and before the timing information of the second timer is not returned to zero, the second terminal 102 is prohibited from executing the terminal connection cell switching process. The present application obtains the timing information of the first timer set in the control plane RRC layer of the first terminal 101 when the first terminal 101 meets the connection cell switching condition, and executes the terminal connection cell switching process only when the timing information returns to zero. After that, the terminal switching notification information can be sent to the second terminal 102 through the control plane RRC layer, so that the second terminal 102 sets the timing information of the second timer set in the control plane RRC layer to the preset timing information that is greater than the switching delay of the terminal connection cell switching process, and prohibits the second terminal 102 from executing the terminal connection cell switching process before the timing information of the second timer returns to zero. This can ensure that during the connection cell switching process of the first terminal 101, the second terminal 102 is prohibited from performing the connection cell switching, thereby avoiding the first terminal 101 and the second terminal 102 being in the switching state at the same time, thereby reducing the transmission delay of data transmission during the switching process and improving the transmission reliability of the switching process.

[0051] In one embodiment, when the cell after the first terminal 101 switches includes multiple access frequency bands, such as Figure 3 As shown, step S202 may further include:

[0052] Step S301: Obtain a pre-switching access frequency band of a pre-switching cell of the first terminal 101.

[0053] The access frequency band refers to the connection frequency band of the first terminal 101. The post-switching cell refers to the connection cell of the first terminal 101 after the connection cell is switched. The pre-switching cell refers to the connection cell of the first terminal 101 before the connection cell is switched. For example, if the first terminal 101 switches from connection cell A to connection cell B, then cell A can be used as the pre-switching cell, and cell B as the post-switching cell. The pre-switching access frequency band refers to the access frequency band of the first terminal 101 in the pre-switching cell, that is, the access frequency band in cell A.

[0054] Step S302: acquiring a target access frequency band that is the same as the access frequency band before the handover from a plurality of access frequency bands included in the cell after the handover.

[0055] The target access frequency band refers to the access frequency band that is the same as the access frequency band before switching among the multiple access frequency bands contained in the cell after switching. Taking the example of the cell after switching containing access frequency band A and access frequency band B, if the access frequency band of the first terminal 101 in the cell before switching is access frequency band A, then the access frequency band A contained in the cell after switching can be used as the target access frequency band.

[0056] Step S303: When it is determined that the second terminal 102 has not accessed the target access frequency band, the second terminal 102 accesses the target access frequency band in the cell after the handover.

[0057] Afterwards, the first terminal 101 can determine whether the second terminal 102 has already accessed the target access frequency band. In this embodiment, in order to reduce the impact of weak coverage, if the connected cell contains multiple frequency bands, the first terminal 101 and the second terminal 102 in the dual-transmit selective reception system need to prioritize connecting to different access frequency bands. Therefore, before accessing a certain frequency band in the cell after the handover, the first terminal 101 needs to first determine whether the frequency band has been accessed by the second terminal 102. Only when the second terminal 102 has not accessed the frequency band will the first terminal 101 perform access to the frequency band. In addition, when switching between connected cells, intra-frequency switching will be prioritized, that is, switching to the same access frequency band will be prioritized. Therefore, after determining the target access frequency band, the first terminal 101 will first determine whether the target access frequency band has been accessed by the second terminal 102. If the second terminal 102 has not accessed the target access frequency band, the first terminal 101 will access the target access frequency band in the cell after the handover.

[0058] In this embodiment, when switching the connection cell, the first terminal 101 will give priority to intra-frequency switching, and on this basis, ensure that the first terminal 101 and the second terminal 102 access different frequency bands to reduce the impact of weak coverage on data transmission delay.

[0059] Furthermore, after step S302, it may also include: when it is determined that the second terminal 102 has accessed the target access frequency band, obtaining the first frequency band to be accessed with the strongest NR signal other than the target access frequency band from multiple access frequency bands; and accessing the first frequency band to be accessed in the cell after switching.

[0060] The NR signal refers to the 5G wireless network signal, and the first frequency band to be accessed refers to the access frequency band with the strongest NR signal, except for the target access frequency band, in the cell after switching. In this embodiment, if the target access frequency band has been accessed by the second terminal 102, then in order to ensure that the first terminal 101 and the second terminal 102 access different frequency bands to reduce the impact of weak coverage, in this embodiment, the first terminal 101 will first determine the access frequency band with the strongest NR signal, except for the target access frequency band, from the multiple access frequency bands contained in the cell after switching as the first frequency band to be accessed, and access the above-mentioned first frequency band to be accessed in the cell after switching.

[0061] For example, the cell after switching includes access band A and access band B. If the target access band is access band A and has been accessed by the second terminal 102, the first terminal 101 will access access band B as the first frequency band to be accessed. If the cell after switching includes access band A, access band B and access band C, if the target access band is access band A and has been accessed by the second terminal 102, the first terminal 101 will access the access band with a stronger NR signal between access band B and access band C as the first frequency band to be accessed.

[0062] In this embodiment, if the target access frequency band has been accessed by the second terminal 102, the first terminal 101 can access the first to-be-accessed frequency band with the strongest NR signal other than the target access frequency band. While ensuring that the first terminal 101 and the second terminal 102 access different frequency bands to reduce the impact of weak coverage, the access frequency band with the strongest NR signal can be used for data transmission, further improving the stability of data transmission.

[0063] In addition, after step S301, it may also include: when the multiple access frequency bands do not include the access frequency band that is the same as the access frequency band before switching, obtaining the second frequency band to be accessed and the strongest NR signal from the multiple access frequency bands; and accessing the second frequency band to be accessed in the cell after switching.

[0064] The second frequency band to be accessed refers to the access frequency band in the cell after switching, to which the second terminal 102 has not accessed and to which the NR signal is the strongest. In this embodiment, if the multiple access frequency bands included in the cell after switching do not include the same access frequency band as the access frequency band before switching, that is, the same-frequency switching cannot be achieved, the first terminal 101 can also determine the second frequency band to be accessed and to which the second terminal 102 has not accessed and which has the strongest NR signal from the multiple access frequency bands included in the cell after switching, so as to ensure that the access frequency band with the strongest NR signal is used for data transmission under the premise that the first terminal 101 and the second terminal 102 access different frequency bands, thereby further improving the stability of data transmission.

[0065] In this embodiment, if the multiple access frequency bands included in the cell after switching do not include the same access frequency band as the access frequency band before switching, the first terminal 101 can also determine, from the above multiple access frequency bands, the second frequency band to be accessed that the second terminal 102 has not accessed and that has the strongest NR signal. On the premise of ensuring that the first terminal 101 and the second terminal 102 access different frequency bands to reduce the impact of weak coverage, the access frequency band with the strongest NR signal is used for data transmission, thereby further improving the stability of data transmission.

[0066] In one embodiment, when the first terminal 101 is a master terminal of a dual-transmit selective reception system, Figure 4 As shown, the terminal connection cell switching method may further include:

[0067] Step S401: When the dual-transmit selective reception system is turned on, obtain the third access frequency band with the strongest NR signal in the cell when the system is turned on; the cell contains multiple access frequency bands when the system is turned on.

[0068] In this embodiment, the first terminal 101 and the second terminal 102 that make up the dual-transmit selective reception system can serve as the master terminal and the slave terminal of the dual-transmit selective reception system, respectively. When the dual-transmit selective reception system is powered on, both the master terminal and the slave terminal need to access the cell corresponding to the power-on time, i.e., the power-on cell. The power-on cell can include multiple access frequency bands, and the third frequency band to be accessed is the access frequency band with the strongest NR signal among the multiple access frequency bands of the power-on cell.

[0069] If the first terminal 101 is the main terminal in the dual-transmit selective reception system, then when the dual-transmit selective reception system is turned on, the first terminal 101 can preferentially select the access frequency band in the cell at the time of startup for access, that is, access the third access frequency band with the strongest NR signal in the cell at the time of startup.

[0070] Step S402, access the third to-be-accessed frequency band in the cell when power is turned on, and send frequency band access notification information to the second terminal 102 through the control plane RRC layer; the frequency band access notification information is used to notify the second terminal 102 to access the fourth to-be-accessed frequency band with the strongest NR signal among the multiple access frequency bands of the cell when power is turned on, except the third to-be-accessed frequency band.

[0071] The frequency band access notification information is used to notify the second terminal 102 to access the fourth frequency band to be accessed with the strongest NR signal in the cell when the power is turned on, in addition to the third frequency band to be accessed, so as to avoid the first terminal 101 and the second terminal 102 accessing the same frequency band in the cell when the power is turned on.

[0072] Specifically, in order to ensure that the first terminal 101 and the second terminal 102 can access different frequency bands when the dual-transmit selective reception system is turned on, after the first terminal 101 as the master terminal accesses the third frequency band to be accessed, it is also necessary to send frequency band access notification information to the second terminal 102 through the control plane RRC layer. After the second terminal 102 receives the above-mentioned frequency band access notification information, it can obtain the access frequency band with the strongest NR signal except the third frequency band to be accessed from the multiple access frequency bands of the cell at the time of startup, and access it as the fourth frequency band to be accessed.

[0073] For example, when the cell is turned on, it includes access band A and access band B, and the NR signal strength of access band A is greater than the NR signal strength of access band B. If the first terminal 101 is the main terminal, then when the dual-transmit selective reception system is turned on, the first terminal 101 can access access band A as the third frequency band to be accessed, and send frequency band access notification information to the second terminal 102. After the second terminal 102 receives the frequency band access notification information, it can access the access band with the strongest NR signal except access band A, that is, access band B as the fourth frequency band to be accessed.

[0074] In this embodiment, if the first terminal 101 is the master terminal and the cell contains multiple access frequency bands when it is turned on, after the first terminal 101 accesses the third access frequency band with the strongest NR signal in the cell when it is turned on, it can also send frequency band access notification information to the second terminal 102 as a slave terminal to avoid the second terminal 102 accessing the same third access frequency band as the first terminal 101, thereby ensuring that the first terminal 101 and the second terminal 102 access different frequency bands to reduce the impact of weak coverage.

[0075] In one embodiment, when the first terminal 101 is a slave terminal of a dual-transmit selective reception system, as shown in FIG. Figure 5 As shown, the terminal connection cell switching method may further include:

[0076] Step S501: When the dual-transmit selective reception system is powered on, a frequency band access notification message sent by the second terminal 102 is received; the frequency band access notification message records the frequency bands that the second terminal has accessed in the cell when powered on; the cell contains multiple access frequency bands when powered on.

[0077] If the first terminal 101 is a slave terminal of the dual-transmit selective reception system, that is, the second terminal 102 is the master terminal of the dual-transmit selective reception system, when the dual-transmit selective reception system is turned on, the second terminal 102 will first access the access frequency band with the strongest NR signal in the cell at the time of startup, and send frequency band access notification information. The frequency band access notification information may include the frequency band that the second terminal 102 has already accessed in the cell when the system is turned on, that is, the accessed frequency band.

[0078] Step S502: Access the frequency band with the strongest NR signal in the cell when the device is powered on, excluding the already accessed frequency bands.

[0079] Afterwards, since the cell contains multiple access frequency bands when it is turned on, in order to ensure that the first terminal 101 and the second terminal 102 access different frequency bands, after the first terminal 101 determines the frequency band that the second terminal 102 has accessed, it can also determine the access frequency band with the strongest NR signal other than the already accessed frequency band from the cell when it is turned on for access.

[0080] In this embodiment, if the first terminal 101 is a slave terminal and the cell contains multiple access frequency bands when it is turned on, after the first terminal 101 receives the frequency band access notification information sent by the second terminal 102, which carries the frequency band to which the second terminal 102 has accessed, it can also access the access frequency band with the strongest NR signal other than the already accessed frequency band to avoid accessing the same access frequency band as the second terminal 102, thereby ensuring that the first terminal 101 and the second terminal 102 access different frequency bands to reduce the impact of weak coverage.

[0081] In one embodiment, Figure 6 As shown, after step S201, the following steps may also be included:

[0082] Step S601: When the timing information of the first timer has not returned to zero, the terminal connection cell switching process is prohibited and a preset waiting time is obtained.

[0083] If the timing information of the first timer has not returned to zero, it is possible that the second terminal 102 is currently executing a terminal connection cell handover process. For example, the second terminal 102 may first meet the connection cell handover conditions and detect that the timing information of the second timer has returned to zero, and thus prioritizes starting the terminal connection cell handover process. In order to avoid executing the terminal connection cell handover at the same time, the timing information of the first timer is set. In this case, the first terminal 101 will prohibit the execution of the terminal connection cell handover process and obtain a pre-set waiting time.

[0084] Step S602: When the preset waiting time has passed, the process returns to step S201 until the timing information of the first timer returns to zero.

[0085] Afterwards, after the above-mentioned preset waiting time has passed, the first terminal 101 can obtain the timing information in the first timer again and determine whether the timing information has returned to zero. If it has returned to zero, it indicates that after the waiting time has passed, the second terminal 102 has completed the connection cell handover. At this time, the first terminal 101 can execute the terminal connection cell handover process and send a terminal handover notification message to the second terminal 102 through the control plane RRC layer. If the timing information has not returned to zero after the preset waiting time has passed, the first terminal needs to wait again for the preset time until the timing information in the first timer returns to zero.

[0086] In this embodiment, if the timing information of the first timer has not returned to zero, indicating that the second terminal 102 is performing a terminal connection cell handover process, the first terminal 101 may prohibit the execution of the terminal connection cell handover process to ensure that the first terminal 101 and the second terminal 102 are not in a handover state at the same time, thereby reducing the transmission delay of data during the handover process and improving the transmission reliability of the handover process. The efficiency of the terminal connection cell handover can also be improved by setting a waiting time and obtaining the timing information of the first timer again after the waiting time has passed.

[0087] Furthermore, the terminal connection cell switching method may further include: upon receiving terminal switching notification information sent by the second terminal 102, setting the timing information of the first timer to preset timing information.

[0088] In this embodiment, the timing information of the first timer is set by the first terminal 101 to a pre-set timing information that is greater than the switching delay of the terminal connection cell switching process when the terminal switching notification information sent by the second terminal 102 is received. Specifically, if the second terminal 102 meets the connection cell switching conditions and the timing information of the second timer is reset to zero, the second terminal 102 can also send a terminal switching notification information to the first terminal 101, so that the first terminal 101 sets the timing information of the first timer to the preset timing information, and if the timing information of the first timer is not reset to zero, the first terminal 101 will be prohibited from executing the terminal connection cell switching process. In this way, when the first terminal 101 switches the connection cell, it only needs to query the first timer set in the control plane RRC layer, without having to negotiate with the second terminal 102, thereby further improving the efficiency of the terminal connection cell switching.

[0089] In this embodiment, the timing information of the first timer is set by the first terminal 101 when it receives the terminal switching notification information sent by the second terminal 102. In this way, when the first terminal 101 switches the connection cell, it only needs to query the first timer set in the control plane RRC layer, without having to negotiate with the second terminal 102, thereby further improving the efficiency of the terminal connection cell switching.

[0090] In one embodiment, a method for implementing URLLC data transmission and reception based on dual-transmission selective reception is also provided. This method allows two terminals to operate in different frequency bands. Due to the difference in NR signal coverage in different frequency bands, coverage complementarity can be achieved. This method can reduce the impact of weak coverage on latency. In addition, the two URLLC terminals coordinate with each other at the RRC layer to ensure that the two terminals stagger their switching times to avoid being in the switching state at the same time, reducing the impact of switching on data transmission latency.

[0091] URLLC reduces data latency and improves reliability by using Mini-slot, high-reliability MCS, PDCP repetition, PDCCH enhancement, PUSCH repetition, etc. In the live network test, URLLC can achieve an average latency of 4ms+ and a reliability of 99.99% with a latency of less than 20ms, which basically meets the needs of most to B services. However, in the process of remote and DT testing, such as Figure 7 and Figure 8 As shown in the figure, it is found that weak coverage and handover have a significant impact on URLLC latency and reliability. Due to the influence of weak coverage and handover, it is impossible to guarantee the low latency and high reliability performance of URLLC data in the networking situation, which affects the application of URLLC in the mobile state of the networking situation.

[0092] Currently, dual-transmit selective reception based on eMBB technology has been implemented. However, as an eMBB dual-transmit selective reception terminal, it consists of two independent terminal protocol stacks, each operating independently. Therefore, if two terminals are connected to the same frequency band network, they are likely to be in a weak coverage area or in a handover state at the same time. In this case, the impact of weak coverage and handover on data transmission latency cannot be reduced.

[0093] Therefore, this embodiment implements URLLC data transmission and reception based on dual transmission and selective reception, such as Figure 9 As shown, the two terminals implementing dual transmission and selective reception on the terminal side are divided into a master terminal and a slave terminal. The two terminals establish a communication link at the control plane RRC layer, and both terminals set a timer Tr at the RRC layer for controlling terminal mobility management.

[0094] Among them, the access process of the dual-transmitter and selective-receiver system can be as follows: Figure 10As shown, unlike the original eMBB dual-transmitter and selective-receiver terminal, which has two data links working independently and no coordination function between each other during the air interface, the two URLLC terminals in this solution are divided into a master terminal and a slave terminal. When powered on, the master terminal first searches for the network and connects to the network (such as accessing the 3.5G NR network), and notifies the slave terminal of the frequency band it is connected to. Based on the information obtained, the slave terminal preferentially accesses another frequency band (such as 2.1G NR). If the area has only single-frequency coverage, both terminals access the same frequency band. This access process prioritizes the two terminals to work in different frequency bands. Due to the difference in NR signal coverage in different frequency bands, coverage complementarity can be formed. This method can reduce the impact of weak coverage on latency.

[0095] The terminal switching process of the dual-transmit and selective-receive system can be as follows Figure 11 As shown in the figure, the two URLLC terminals coordinate with each other at the RRC layer to ensure that the two terminals stagger their switching times, avoid being in the switching state at the same time, and reduce the impact of switching on data transmission delay. The two terminals add a timer Tr at the RRC layer. When one of the terminals needs to switch, (1) first check whether Tr is 0. If Tr=0, the RRC layer sends a switching notification to the other terminal, informing the other terminal that the original terminal wants to initiate the switch. After receiving the notification, the other terminal sets Tr to T0, and the terminal that needs to switch initiates the switching process; (2) If Tr≠0, it means that the other terminal is in the switching process, and waits for a certain time (such as T0 / 2) before checking Tr again. (The T0 value is set to be greater than the switching delay, and the switching is completed when the T0 timer returns to zero).

[0096] Analysis of dual-transmitter and selective receiver system:

[0097] 1) Analysis of the impact of weak coverage: Two URLLC terminals access different frequency bands, such as 3.5G NR and 2.1G NR respectively. Assuming that both networks meet 95% coverage and the network coverage of the two frequency bands is independent, the impact of weak coverage of dual-band dual-transmit and dual-receive is reduced from 5% to (1-95%) * (1-95%) = 0.25% compared to a single network. The URLLC data transmission and reception solution based on dual-transmit and dual-receive can significantly reduce the impact of weak coverage on data latency.

[0098] 2) Analysis of the impact of handovers: When a single terminal is operating, data transmission is suspended during the handover process and resumed after the handover is complete. Due to the handover, data transmission latency can reach 60-100ms during the handover period, far exceeding the millisecond latency requirement of URLLC. Using a URLLC data transmission and reception method based on dual-transmit selective reception, the two terminals coordinate with each other to avoid simultaneous handovers. While one terminal is switching, the other can continue to transmit and receive data normally, thus preventing the handover from impacting data transmission latency.

[0099] This embodiment provides URLLC data transmission and reception based on dual-transmit selective reception. The two terminals operate on different frequency bands. Due to the different NR signal coverage in different frequency bands, they can form complementary coverage. This approach can reduce the impact of weak coverage on latency. In addition, the two URLLC terminals coordinate with each other at the RRC layer to ensure that the two terminals stagger their handover times to avoid being in the handover state at the same time, reducing the impact of handover on data transmission latency.

[0100] It should be understood that, although the various steps in the flowcharts involved in the various embodiments described above are displayed in sequence according to the instructions of the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and these steps can be executed in other orders. Moreover, at least a portion of the steps in the flowcharts involved in the various embodiments described above can include multiple steps or multiple stages, and these steps or stages are not necessarily executed and completed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a portion of steps or stages in other steps.

[0101] Based on the same inventive concept, an embodiment of the present application further provides a terminal connection cell switching device for implementing the terminal connection cell switching method involved above. The implementation solution provided by this device is similar to the implementation solution described in the above method. Therefore, the specific limitations of one or more terminal connection cell switching device embodiments provided below can be found in the above limitations of the terminal connection cell switching method, and will not be repeated here.

[0102] In one embodiment, Figure 12 As shown, a terminal connection cell switching device is provided, which is applied to a first terminal in a dual-transmit selective reception system. The dual-transmit selective reception system also includes a second terminal, and a communication link is established between the first terminal and the control plane RRC layer of the second terminal. The device includes: a timing information acquisition module 1201 and a connection cell switching module 1202, wherein:

[0103] The timing information acquisition module 1201 is configured to acquire timing information of a first timer set by the first terminal in the control plane RRC layer when the first terminal meets the connection cell switching condition;

[0104] The connection cell switching module 1202 is used to execute the terminal connection cell switching process when the timing information of the first timer returns to zero, and send terminal switching notification information to the second terminal through the control plane RRC layer; the terminal switching notification information is used to instruct the second terminal to set the timing information of the second timer set by the second terminal in the control plane RRC layer to the preset timing information; wherein the preset timing information is greater than the switching delay of the terminal connection cell switching process, and before the timing information of the second timer returns to zero, the second terminal is prohibited from executing the terminal connection cell switching process.

[0105] In one embodiment, when the cell after the first terminal is switched contains multiple access frequency bands, the cell switching module 1202 is connected and further used to obtain the pre-switching access frequency band of the first terminal in the cell before the switching; from the multiple access frequency bands contained in the cell after the switching, obtain the target access frequency band that is the same as the pre-switching access frequency band; when it is determined that the second terminal has not accessed the target access frequency band, access the target access frequency band in the cell after the switching.

[0106] In one embodiment, the connection cell switching module 1202 is also used to obtain the first frequency band to be accessed with the strongest NR signal other than the target access frequency band from multiple access frequency bands when it is determined that the second terminal has accessed the target access frequency band; and the first frequency band to be accessed in the cell after access switching.

[0107] In one embodiment, the connection cell switching module 1202 is also used to obtain, from multiple access frequency bands, a second frequency band to be accessed that is not accessed by the second terminal and has the strongest NR signal, when the multiple access frequency bands do not include an access frequency band that is the same as the access frequency band before switching; and the second frequency band to be accessed in the cell after access switching.

[0108] In one embodiment, when the first terminal is the main terminal of the dual-transmit selective reception system, the terminal is connected to the cell switching device and also includes: a system power-on access module, which is used to obtain the third to-be-accessed frequency band with the strongest NR signal in the cell when the dual-transmit selective reception system is turned on; the cell contains multiple access frequency bands when it is turned on; the third to-be-accessed frequency band in the cell when it is turned on is accessed, and frequency band access notification information is sent to the second terminal through the control plane RRC layer; the frequency band access notification information is used to notify the second terminal to access the fourth to-be-accessed frequency band with the strongest NR signal except the third to-be-accessed frequency band among the multiple access frequency bands of the cell when it is turned on.

[0109] In one embodiment, when the first terminal is a slave terminal of a dual-transmit selective reception system, the system power-on access module is further used to receive frequency band access notification information sent by the second terminal when the dual-transmit selective reception system is powered on; the frequency band access notification information records the accessed frequency band of the second terminal in the cell when the second terminal is powered on; the cell contains multiple access frequency bands when the system is powered on; and the access frequency band with the strongest NR signal in the cell other than the accessed frequency band when the system is powered on is accessed.

[0110] In one embodiment, the connection cell switching module 1202 is also used to prohibit the execution of the terminal connection cell switching process and obtain the preset waiting time when the timing information of the first timer has not returned to zero; after the preset waiting time has passed, return to the step of obtaining the timing information of the first timer set by the first terminal in the control plane RRC layer until the timing information of the first timer returns to zero.

[0111] In one embodiment, the terminal connection cell switching device further includes: a timing information setting module, configured to set the timing information of the first timer to preset timing information when receiving terminal switching notification information sent by the second terminal.

[0112] Each module in the above-mentioned terminal connection cell switching device can be implemented in whole or in part through software, hardware, or a combination thereof. Each module can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the corresponding operations of each module.

[0113] In one embodiment, a computer device is provided. The computer device may be a terminal, and its internal structure diagram may be as follows: Figure 13 As shown. The computer device includes a processor, a memory and a communication interface connected via a system bus. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be implemented through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. When the computer program is executed by the processor, a terminal connection cell switching method is implemented.

[0114] Those skilled in the art will understand that Figure 13The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

[0115] In one embodiment, a computer device is further provided, including a memory and a processor. The memory stores a computer program, and the processor implements the steps in the above method embodiments when executing the computer program.

[0116] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps in the above-mentioned method embodiments are implemented.

[0117] In one embodiment, a computer program product is provided, including a computer program, which implements the steps in the above method embodiments when executed by a processor.

[0118] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties.

[0119] Those skilled in the art will appreciate that all or part of the processes in the above-mentioned embodiment methods can be implemented by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, database or other media used in the embodiments provided in this application may include at least one of non-volatile and volatile memory. Non-volatile memory may include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory may include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in the various embodiments provided herein may include at least one of a relational database and a non-relational database. Non-relational databases may include, but are not limited to, distributed databases based on blockchains. The processor involved in the various embodiments provided herein may be, but are not limited to, a general-purpose processor, a central processing unit, a graphics processing unit, a digital signal processor, a programmable logic unit, a data processing logic unit based on quantum computing, and the like.

[0120] The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0121] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A method for switching a terminal connection cell, characterized in that: A method for applying a first terminal in a dual-transmit selective reception system, wherein the dual-transmit selective reception system further includes a second terminal, and a communication link is established between the first terminal and a control plane RRC layer of the second terminal; and the method includes: When the first terminal meets the connection cell switching condition, obtaining timing information of a first timer set by the first terminal in the control plane RRC layer; When the timing information of the first timer returns to zero, the terminal connection cell switching process is executed, and terminal switching notification information is sent to the second terminal through the control plane RRC layer; the terminal switching notification information is used to instruct the second terminal to set the timing information of the second timer set by the second terminal in the control plane RRC layer to the preset timing information; wherein the preset timing information is greater than the switching delay of the terminal connection cell switching process, and before the timing information of the second timer returns to zero, the second terminal is prohibited from executing the terminal connection cell switching process.

2. The method according to claim 1, characterized in that In a case where the cell after the first terminal is switched includes multiple access frequency bands, the process of executing the terminal connection cell switching includes: Obtaining a pre-switching access frequency band of the first terminal in the pre-switching cell; Acquire a target access frequency band that is the same as the access frequency band before the handover from a plurality of access frequency bands included in the cell after the handover; In a case where it is determined that the second terminal has not accessed the target access frequency band, access is made to the target access frequency band in the cell after the handover.

3. The method according to claim 2, characterized in that After acquiring the target access frequency band that is the same as the access frequency band before the switching, the method further includes: When it is determined that the second terminal has accessed the target access frequency band, obtaining, from the multiple access frequency bands, a first frequency band to be accessed with the strongest NR signal except the target access frequency band; Access the first to-be-accessed frequency band in the cell after the handover.

4. The method according to claim 2, characterized in that After obtaining the pre-switching access frequency band of the first terminal in the pre-switching cell, the method further includes: When the multiple access frequency bands do not include an access frequency band that is the same as the access frequency band before switching, acquiring, from the multiple access frequency bands, a second frequency band to be accessed that is not accessed by the second terminal and has the strongest NR signal; Access the second to-be-accessed frequency band in the cell after the handover.

5. The method according to claim 1, wherein In a case where the first terminal is a master terminal of the dual-transmit and selective-receive system, the method further includes: When the dual-transmit selective reception system is powered on, obtaining a third frequency band to be accessed with the strongest NR signal in the cell when the system is powered on; the cell includes multiple access frequency bands when the system is powered on; Access the third to-be-accessed frequency band in the cell when powering on, and send frequency band access notification information to the second terminal through the control plane RRC layer; the frequency band access notification information is used to notify the second terminal to access the fourth to-be-accessed frequency band with the strongest NR signal except the third to-be-accessed frequency band among the multiple access frequency bands of the cell when powering on.

6. The method according to claim 1, wherein In a case where the first terminal is a slave terminal of the dual-transmit selective-receive system, the method further includes: When the dual-transmit selective reception system is powered on, receiving frequency band access notification information sent by the second terminal; the frequency band access notification information records the frequency band that the second terminal has accessed in the cell when the system is powered on; the cell when the system is powered on includes multiple access frequency bands; Access the access frequency band with the strongest NR signal in the cell at the time of power-on, excluding the already accessed frequency band.

7. The method according to claim 1, characterized in that After acquiring the timing information of the first timer set by the first terminal at the control plane RRC layer, the method further includes: When the timing information of the first timer has not returned to zero, prohibiting execution of the terminal connection cell handover process and obtaining a preset waiting time; When the preset waiting time has passed, return to the step of obtaining the timing information of the first timer set by the first terminal on the control plane RRC layer until the timing information of the first timer returns to zero.

8. The method according to claim 7, characterized in that The method further comprises: When the terminal switching notification information sent by the second terminal is received, the timing information of the first timer is set as the preset timing information.

9. A terminal connection cell switching device, characterized in that: A first terminal in a dual-transmit selective reception system, wherein the dual-transmit selective reception system further includes a second terminal, and a communication link is established between the first terminal and a control plane RRC layer of the second terminal; the device includes: a timing information acquisition module, configured to acquire timing information of a first timer set by the first terminal at the control plane RRC layer when the first terminal meets a connection cell switching condition; A connection cell switching module is used to execute a terminal connection cell switching process when the timing information of the first timer returns to zero, and send terminal switching notification information to the second terminal through the control plane RRC layer; the terminal switching notification information is used to instruct the second terminal to set the timing information of the second timer set by the second terminal in the control plane RRC layer to preset timing information; wherein the preset timing information is greater than the switching delay of the terminal connection cell switching process, and before the timing information of the second timer returns to zero, the second terminal is prohibited from executing the terminal connection cell switching process.

10. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 8 are implemented.

11. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 8 are implemented.

12. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 8 are implemented.

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