Terminal service recovery method, device, medium and terminal

Abstract

The present invention provides a method, device, storage medium and terminal for recovering terminal services. The method includes obtaining the channel environment of the user terminal in the NR cell during the process of the user terminal residing in the NR cell and performing data transmission services on the additional BWP; after determining that the channel environment of the user terminal in the NR cell cannot meet the transmission requirements, triggering random access on the initial BWP, and after the initial BWP random access is successful, performing data transmission services on the initial BWP, wherein the triggering of random access on the initial BWP includes: calculating relevant parameters of the synchronization signal block in the current NR cell; after determining that the current NR cell signal meets the requirements according to the relevant parameters of the synchronization signal block, triggering random access on the initial BWP. The present invention can promptly restore the smoothness of uplink and downlink data transmission when the channel environment of the terminal deteriorates, providing a better user experience.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a method, device, storage medium and terminal for recovering terminal services. Background Art

[0002] Bandwidth Part (BWP) is a new concept introduced by 5G. Because 5G bandwidth is large, the concept of BWP is set up to reduce power consumption on the mobile phone. BWP is a subset of the entire bandwidth. The uplink and downlink bandwidth used by the user equipment (UE) is variable. Different BWPs are configured for UEs through the network. In addition to the different bandwidth sizes, the configuration parameters of other physical layer channels / signals are also independently configured for each BWP. The network side can switch the UE's BWP to a large bandwidth based on the current business volume, such as when large amounts of data need to be transmitted. In addition, the network side will also switch the UE to a BWP with better channel quality based on the measured values ​​of each frequency domain channel.

[0003] BWP is generally divided into three categories: Initial BWP, Additional BWP, and Default BWP. The UE initially accesses the Initial BWP, and may be assigned to the Additional BWP based on the service volume and service type. When the UE is doing business on the Additional BWP and the channel environment on this bandwidth deteriorates, the terminal can only wait for the network side to trigger the BWP switch through DCI or wait for the network side to send a command to switch the cell. This is relatively passive for the terminal. Once a loss of synchronization occurs, the terminal can only be rebuilt. When the channel environment deteriorates, the downlink channel itself already has problems. If it cannot be quickly restored, the reconstruction will not be successful. This will result in a longer recovery time for data services and a poor user experience.

[0004] Therefore, it is necessary to provide a new terminal service recovery method, device, storage medium and terminal to solve the above problems existing in the prior art. Summary of the invention

[0005] The object of the present invention is to provide a method, device, storage medium and terminal for recovering terminal services, thereby improving the efficiency of uplink and downlink data transmission of user terminals.

[0006] To achieve the above object, the terminal service recovery method of the present invention includes:

[0007] In the process of a user terminal residing in an NR cell and performing a data transmission service on an additional BWP, obtaining a channel environment of the user terminal in the NR cell;

[0008] After determining that the channel environment of the user terminal in the NR cell cannot meet the transmission requirements, random access is triggered on the initial BWP.

[0009] The beneficial effect of the terminal service recovery method described in the present invention is that: in the process of the user terminal residing in the NR cell and performing data transmission services on the additional BWP, when the channel environment of the user terminal in the NR cell cannot meet the transmission requirements, the user terminal actively attempts to trigger random access on the initial BWP, so that after the initial BWP random access is successful, it can autonomously fall back to the initial BWP to perform data transmission services. This can not only improve the sending and receiving effects of the terminal, but also avoid missing network information, such as cell switching or switching BWP information, so that the terminal can promptly restore the smoothness of uplink and downlink data transmission when the channel environment deteriorates, providing a better user experience.

[0010] Optionally, triggering random access on the initial BWP includes:

[0011] Calculate relevant parameters of the synchronization signal block in the current NR cell;

[0012] After determining that the current NR cell signal meets the requirements according to the relevant parameters of the synchronization signal block, random access is triggered on the initial BWP.

[0013] Optionally, the overlapping portion between the additional BWP and the initial BWP is less than or equal to 50% of the bandwidth of the initial BWP, and the synchronization signal block is not within the overlapping portion.

[0014] Optionally, triggering random access on the initial BWP includes:

[0015] Obtaining a reference signal received power and a signal-to-noise ratio of a synchronization signal block in the NR cell;

[0016] When the reference signal receiving power of the synchronization signal block meets the residence condition and the signal-to-noise ratio of the synchronization signal block is greater than the signal-to-noise ratio of the demodulation reference signal in the downlink channel in the additional BWP, random access is triggered on the initial BWP.

[0017] Optionally, the reference signal received power in the synchronization signal block satisfies a dwell condition, including:

[0018] When the reference signal receiving power of the synchronization signal block is greater than a preset threshold, it is determined that the synchronization signal block meets the residence condition, wherein the preset threshold is the product of the minimum receiving level signal in the NR cell and a preset parameter.

[0019] Optionally, the method further includes performing a data transmission service on the initial BWP after the initial BWP random access is successful.

[0020] Optionally, after the initial BWP random access is successful, performing a data transmission service on the initial BWP includes:

[0021] Calculate the current data transmission rate of the initial BWP;

[0022] When the data transmission rate of the initial BWP meets the user's demand, the data transmission service is performed on the initial BWP.

[0023] Optionally, the method further includes triggering reconstruction and reallocating channel resources when the data transmission rate of the initial BWP does not meet user requirements.

[0024] Optionally, the determining that the channel environment of the user terminal in the NR cell cannot meet the transmission requirement includes:

[0025] Calculating a signal-to-noise ratio of a demodulation reference signal of the user terminal in a downlink channel;

[0026] When the signal-to-noise ratio of the demodulation reference signal in the downlink channel is less than 0, it is determined that the channel environment of the user terminal in the NR cell cannot meet the transmission requirements.

[0027] The present invention provides a device for restoring terminal services, comprising:

[0028] An environment acquisition module, configured to acquire a channel environment of the user terminal in the NR cell when the user terminal resides in the NR cell and performs a data transmission service on the additional BWP;

[0029] The access module is used to trigger random access on the initial BWP after determining that the channel environment of the user terminal in the NR cell cannot meet the transmission requirements.

[0030] The beneficial effect of the terminal service recovery method described in the present invention is that: when the user terminal resides in the NR cell and performs data transmission services on the additional BWP, the channel environment of the user terminal in the NR cell is obtained through the environment acquisition module. When the channel environment of the user terminal in the NR cell cannot meet the transmission requirements, the access module actively attempts to trigger random access on the initial BWP, so that after the initial BWP random access is successful, it can autonomously fall back to the initial BWP to perform data transmission services. This can not only improve the sending and receiving effects of the terminal, but also avoid missing network information, such as cell switching or switching BWP information, so that the terminal can promptly restore the smoothness of uplink and downlink data transmission when the channel environment deteriorates, providing a better user experience.

[0031] Optionally, the access module is further used for:

[0032] Calculate relevant parameters of the synchronization signal block in the current NR cell;

[0033] After determining that the current NR cell signal meets the requirements according to the relevant parameters of the synchronization signal block, random access is triggered on the initial BWP.

[0034] Optionally, the overlapping portion between the additional BWP and the initial BWP is less than or equal to 50% of the bandwidth of the initial BWP, and the synchronization signal block is not within the overlapping portion.

[0035] Optionally, the access module is further used for:

[0036] Obtaining a reference signal received power and a signal-to-noise ratio of a synchronization signal block in the NR cell;

[0037] When the reference signal receiving power of the synchronization signal block meets the residence condition and the signal-to-noise ratio of the synchronization signal block is greater than the signal-to-noise ratio of the demodulation reference signal in the downlink channel in the additional BWP, random access is triggered on the initial BWP.

[0038] Optionally, the access module is further used for:

[0039] When the reference signal receiving power of the synchronization signal block is greater than a preset threshold, it is determined that the synchronization signal block meets the residence condition, wherein the preset threshold is the product of the minimum receiving level signal in the NR cell and a preset parameter.

[0040] Optionally, a service module is also included, and the service module is used to perform data services on the initial BWP after the initial BWP random access is successful.

[0041] Optionally, the business module is further used to:

[0042] Calculate the current data transmission rate of the initial BWP;

[0043] When the data transmission rate of the initial BWP meets the user's demand, the data service is performed on the initial BWP.

[0044] Optionally, the service module is further configured to trigger reconstruction and reallocate channel resources when the data transmission rate of the initial BWP does not meet user requirements.

[0045] Optionally, the access module is further used for:

[0046] Calculating a signal-to-noise ratio of a demodulation reference signal of the user terminal in a downlink channel;

[0047] When the signal-to-noise ratio of the demodulation reference signal in the downlink channel is less than 0, it is determined that the channel environment of the user terminal in the NR cell cannot meet the transmission requirements.

[0048] The present invention also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the terminal service recovery method described above is implemented.

[0049] The present invention provides a terminal, comprising: a processor and a memory;

[0050] The memory is used to store computer programs;

[0051] The processor is used to execute the computer program stored in the memory, so that the terminal executes the above-mentioned terminal service recovery method. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 This is a schematic diagram of the overall process of the method for restoring terminal services according to an embodiment of the present invention;

[0053] Figure 2 A schematic diagram of a specific execution process of the method for restoring terminal services according to an embodiment of the present invention;

[0054] Figure 3 A structural block diagram of the optimization system for terminal service recovery according to an embodiment of the present invention;

[0055] Figure 4 is a structural block diagram of the terminal according to an embodiment of the present invention. DETAILED DESCRIPTION

[0056] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Unless otherwise defined, the technical terms or scientific terms used herein should be understood by people with general skills in the field to which the present invention belongs. "Including" and similar words used in this article mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0057] In view of the problems existing in the prior art, an embodiment of the present invention provides a method for restoring terminal services. Figure 1 , including the following steps:

[0058] S101. When a user terminal resides in an NR cell and performs a data transmission service on an additional BWP, a channel environment of the user terminal in the NR cell is obtained.

[0059] S102: After determining that the channel environment of the user terminal cannot meet the transmission requirement, trigger random access on the initial BWP.

[0060] When the user terminal UE resides in the NR cell for data transmission services, the cell channel environment may deteriorate and the network side still fails to switch the cell or switch part of the bandwidth BWP in time. For example, the signal-to-noise ratio of the downlink channel demodulation reference signal is less than 0, but the network side fails to switch the cell or switch the BWP, thereby affecting the processing efficiency of the data service. At present, after the channel environment in terms of bandwidth deteriorates, the user terminal UE can only wait for the network side to trigger the switching of BWP through the downlink control information DCI or wait for the network side to send a command to switch the cell, which is relatively passive for the terminal. Moreover, when the channel environment deteriorates, the downlink channel has problems, which will seriously affect the data transmission process and user experience.

[0061] Through the method of the present application, the user terminal actively switches from the current additional BWP to the initial BWP for data transmission services, and the BWP itself is replaced to improve the transmission and reception of the user terminal. At the same time, it also avoids missing network information such as cell switching or switching BWP, thereby providing the possibility for the user terminal to restore smooth uplink and downlink data transmission, and providing a better user experience.

[0062] In some embodiments, determining that a channel environment of the user terminal in the NR cell cannot meet the transmission requirement includes:

[0063] Calculating a signal-to-noise ratio of a demodulation reference signal of the user terminal in a downlink channel;

[0064] When the signal-to-noise ratio of the demodulation reference signal in the downlink channel is less than 0, it is determined that the channel environment cannot meet the transmission requirement.

[0065] In this embodiment, the signal-to-noise ratio of the user terminal in the downlink channel is calculated to determine whether the data transmission of the downlink channel meets the requirements. Specifically, when the signal-to-noise ratio of the demodulation reference signal of the user terminal in the downlink channel is less than 0, it can be determined that the current channel environment has deteriorated and cannot meet the transmission requirements, and adjustment is required.

[0066] In some embodiments, triggering random access on the initial BWP includes:

[0067] Calculate relevant parameters of the synchronization signal block in the current NR cell;

[0068] After determining that the current NR cell signal meets the requirements according to the relevant parameters of the synchronization signal block, random access is triggered on the initial BWP.

[0069] By calculating the relevant parameters of the synchronization signal block in the NR cell, it is convenient to determine whether the NR cell signal meets the requirements based on the relevant parameters. After determining that the NR cell signal meets the requirements, it is determined that the current NR cell signal can meet the requirements, but because there is large interference in the currently used BWP bandwidth, it is only necessary to replace the BWP bandwidth of the NR cell. Therefore, random access is triggered on the initial BWP for data services, thereby facilitating the re-access process of the BWP bandwidth.

[0070] However, if it is determined based on the relevant parameters of the synchronization signal block that the current NR cell signal cannot meet the requirements, random access cannot be triggered in the initial BWP, and reconstruction needs to be triggered to reallocate channel resources.

[0071] Exemplarily, the relevant parameters include the reference signal receiving power and signal-to-noise ratio of the synchronization signal block. When the reference signal receiving power of the synchronization signal block meets the residence condition and the signal-to-noise ratio of the synchronization signal block is greater than the signal-to-noise ratio of the demodulation reference signal in the downlink channel in the additional BWP, it is determined that the current NR cell signal meets the requirements, and random access is triggered on the initial BWP.

[0072] The overlapping portion between the additional BWP and the initial BWP is less than or equal to 50% of the bandwidth of the initial BWP, and the synchronization signal block is not within the overlapping portion.

[0073] The relevant parameters of the synchronization signal block (SynchronizationSignalandPBCHblock, SSB) include at least the reference signal receiving power and the signal-to-noise ratio.

[0074] In this embodiment, reference Figure 2, in the process of the user terminal residing in the NR cell and performing data transmission services on the additional BWP, the channel environment of the user terminal in the NR cell is obtained to determine whether the channel environment in the user terminal UE meets the transmission requirements, and then the channel environment is adjusted according to the channel environment. When the channel environment in the NR cell of the user terminal UE meets the transmission requirements, the data transmission service is carried out normally, and when the channel environment in the user terminal UE cannot meet the transmission requirements, the signal-to-noise ratio and the reference signal received power of the synchronization signal block in the current NR cell are calculated to further determine whether the signal of the current NR cell meets the requirements. If it is determined that the signal of the NR cell meets the requirements according to the relevant parameters of the synchronization signal block, it can be determined that it is only because there is a large interference in the currently used BWP bandwidth. Therefore, random access is triggered on the initial BWP to perform data services, so as to switch the BWP, and after the initial BWP random access is successful, data transmission services are performed on the initial BWP, so as to improve the efficiency of the data transmission service of the user terminal UE in the downlink channel and improve the user experience.

[0075] Among them, the initial BWP and the additional BWP are both partial bandwidths configured on the network side, specifically including one initial BWP and N additional BWPs, N is a positive integer, and the initial BWP and the additional BWP configured on the network side meet the following conditions: the overlapping part of the additional BWP and the initial BWP is less than or equal to 50% of the bandwidth of the initial BWP, and the synchronization signal block SSB is not within the overlapping part.

[0076] In some embodiments, triggering random access on the initial BWP further includes:

[0077] Acquire the reference signal received power and signal-to-noise ratio of the synchronization signal block according to the relevant parameters;

[0078] When the reference signal receiving power of the synchronization signal block meets the residence condition and the signal-to-noise ratio of the synchronization signal block is greater than the signal-to-noise ratio of the demodulation reference signal in the downlink channel in the additional BWP, random access is triggered on the initial BWP.

[0079] After calculating the relevant parameters of the synchronization signal block, the reference signal receiving power and signal-to-noise ratio of the synchronization signal block are obtained. The reference signal receiving power is used to determine whether the downlink channel of the current NR cell meets the residence condition. When it is determined that the signal-to-noise ratio of the synchronization signal block is greater than the signal-to-noise ratio of the demodulation reference signal of the downlink channel in the additional BWP, it can be determined that the current NR cell signal meets the requirements based on the synchronization signal block. At the same time, it indicates that the current NR cell signal can meet the requirements, but because the currently used BWP bandwidth has large interference, it only needs to replace the BWP bandwidth of the NR cell, which is convenient for the subsequent initiation of the BWP bandwidth re-access process.

[0080] In some other embodiments, the reference signal received power in the synchronization signal block satisfies a dwell condition, including:

[0081] When the reference signal receiving power of the synchronization signal block is greater than a preset threshold, it is determined that the synchronization signal block meets the residence condition, wherein the preset threshold is the product of the minimum receiving level signal in the NR cell and a preset parameter.

[0082] After determining that the reference signal receiving power (RSRP) of the synchronization signal block is greater than a preset threshold, it can be determined that the synchronization signal block meets the residence condition. The preset threshold is the product of the minimum receiving level signal in the NR cell and the preset parameter q-RxLevMin and the preset parameter X, and the preset parameter selects different values ​​according to different NR cells.

[0083] Exemplarily, the preset parameter is 20dB.

[0084] In some further embodiments, the method further includes: S103, performing data transmission service on the initial BWP after the initial BWP random access is successful.

[0085] The process includes:

[0086] Calculate the current data transmission rate of the initial BWP;

[0087] When the data transmission rate of the initial BWP meets the user's demand, the data transmission service is performed on the initial BWP.

[0088] In this embodiment, after the initial BWP access is triggered, it is determined whether the data transmission rate of the initial BWP meets the user's needs so as to perform data transmission services on the initial BWP; if the data transmission rate of the initial BWP does not meet the user's needs, reconstruction is triggered and channel resources are reallocated.

[0089] The method described in this embodiment allows the user terminal to perform data transmission services on the initial BWP after the NR cell switches from the additional BWP to the initial BWP. It not only replaces the BWP itself to improve the sending and receiving effects of the user terminal, but also avoids missing network information such as cell switching or switching BWP, thereby providing the possibility for the terminal to restore smooth uplink and downlink data transmission and providing a better user experience.

[0090] The present invention also discloses a device for restoring terminal services, referring to Figure 3 ,include:

[0091] The environment acquisition module 301 is used to obtain the channel environment of the user terminal in the NR cell when the user terminal resides in the NR cell and performs a data transmission service on the additional BWP;

[0092] The access module 302 is used to trigger random access on the initial BWP after determining that the channel environment of the user terminal in the NR cell cannot meet the transmission requirements.

[0093] In some embodiments, the access module 302 is further configured to:

[0094] Calculate relevant parameters of the synchronization signal block in the current NR cell;

[0095] After determining that the current NR cell signal meets the requirements according to the relevant parameters of the synchronization signal block, random access is triggered on the initial BWP.

[0096] In some other embodiments, the overlapping portion of the additional BWP and the initial BWP is less than or equal to 50% of the bandwidth of the initial BWP, and the synchronization signal block is not within the overlapping portion.

[0097] In some further embodiments, the access module 302 is further configured to:

[0098] Acquire the reference signal received power and signal-to-noise ratio of the synchronization signal block according to the relevant parameters;

[0099] When the reference signal receiving power of the synchronization signal block meets the residence condition and the signal-to-noise ratio of the synchronization signal block is greater than the signal-to-noise ratio of the demodulation reference signal in the downlink channel in the additional BWP, it is determined that the current NR cell signal meets the requirements.

[0100] In some other embodiments, the access module 302 is further used to:

[0101] When the reference signal receiving power of the synchronization signal block is greater than a preset threshold, it is determined that the synchronization signal block meets the residence condition, wherein the preset threshold is the product of the minimum receiving level signal in the NR cell and a preset parameter.

[0102] In some embodiments, a service module 303 is further included, and the service module is used to perform data transmission service on the initial BWP after the initial BWP random access is successful.

[0103] In some embodiments, the service module 303 is further used to:

[0104] Calculate the current data transmission rate of the initial BWP;

[0105] When the data transmission rate of the initial BWP meets the user's demand, the data transmission service is performed on the initial BWP.

[0106] In some embodiments, the service module 303 is further configured to trigger reconstruction and reallocate channel resources when the data transmission rate of the initial BWP does not meet user requirements.

[0107] In some further embodiments, the access module 302 is further used to: calculate a signal-to-noise ratio of a demodulation reference signal of the user terminal in a downlink channel;

[0108] When the signal-to-noise ratio of the demodulation reference signal in the downlink channel is less than 0, it is determined that the channel environment of the user terminal in the NR cell cannot meet the transmission requirements.

[0109] It should be noted that the structure and principle of the above-mentioned terminal service recovery device correspond one-to-one to the steps in the above-mentioned terminal service recovery method, so they are not repeated here.

[0110] It should be noted that it should be understood that the division of the various modules of the above device is only a division of logical functions. In actual implementation, they can be fully or partially integrated into one physical entity, or they can be physically separated. And these modules can all be implemented in the form of software calling through processing elements; they can also be all implemented in the form of hardware; some modules can also be implemented in the form of software calling through processing elements, and some modules can be implemented in the form of hardware. For example, the selection module can be a separately established processing element, or it can be integrated in a certain chip of the above system for implementation. In addition, it can also be stored in the memory of the above system in the form of program code, and called and executed by a certain processing element of the above system. The implementation of other modules is similar. In addition, these modules can be fully or partially integrated together, or they can be implemented independently. The processing element described here can be an integrated circuit with signal processing capabilities. In the implementation process, each step of the above method or each module above can be completed by an integrated logic circuit of hardware in the processor element or instructions in the form of software.

[0111] For example, the above modules may be one or more integrated circuits configured to implement the above methods, such as one or more application specific integrated circuits (ASICs), or one or more digital signal processors (DSPs), or one or more field programmable gate arrays (FPGAs). For another example, when a module is implemented in the form of a processing element scheduling program code, the processing element may be a general-purpose processor, such as a central processing unit (CPU) or other processors that can call program code. For another example, these modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).

[0112] In other embodiments of the present application, the present application embodiment discloses a terminal, such as Figure 4 As shown, the terminal 400 may include: one or more processors 401; a memory 402; a display 403; one or more applications (not shown); and one or more computer programs 404, and the above components may be connected via one or more communication buses 405. The one or more computer programs 404 are stored in the above memory 402 and are configured to be executed by the one or more processors 401, and the one or more computer programs 404 include instructions.

[0113] The present invention also discloses a computer-readable storage medium, on which a computer program is stored. When the computer program is run by a processor, the method is executed.

[0114] The storage medium of the present invention stores a computer program, and the computer program implements the above method when executed by a processor. The storage medium includes: a read-only memory (ROM), a random access memory (RAM), a disk, a USB flash drive, a memory card or an optical disk, and other media that can store program codes.

[0115] In another embodiment disclosed in the present invention, the present invention further provides a chip system, which is coupled to a memory and is used to read and execute program instructions stored in the memory to perform the steps of the above method.

[0116] Through the description of the above implementation methods, technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above functional modules is used as an example. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. The specific working process of the system, device and unit described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0117] Each functional unit in each embodiment of the present application can be integrated into a processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of software functional units.

[0118] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as flash memory, mobile hard disk, read-only memory, random access memory, disk or optical disk.

[0119] The above is only a specific implementation of the embodiment of the present application, but the protection scope of the embodiment of the present application is not limited thereto, and any changes or replacements within the technical scope disclosed in the embodiment of the present application should be included in the protection scope of the embodiment of the present application. Therefore, the protection scope of the embodiment of the present application should be based on the protection scope of the claims.

[0120] Although the embodiments of the present invention are described in detail above, it is obvious to those skilled in the art that various modifications and variations can be made to these embodiments. However, it should be understood that such modifications and variations are within the scope and spirit of the present invention as described in the claims. Moreover, the present invention described herein may have other embodiments and may be implemented or realized in a variety of ways.

Claims

1. A method for restoring terminal services, characterized in that: include: In the process of a user terminal residing in an NR cell and performing a data transmission service on an additional BWP, obtaining a channel environment of the user terminal in the NR cell; After determining that the channel environment of the user terminal in the NR cell cannot meet the transmission requirements, triggering random access on the initial BWP, including: Calculate the reference signal received power and signal-to-noise ratio of the synchronization signal block in the current NR cell; When the reference signal receiving power of the synchronization signal block meets the residence condition and the signal-to-noise ratio of the synchronization signal block is greater than the signal-to-noise ratio of the demodulation reference signal in the downlink channel in the additional BWP, random access is triggered on the initial BWP, wherein, when the reference signal receiving power of the synchronization signal block is greater than a preset threshold, it is determined that the synchronization signal block meets the residence condition, wherein the preset threshold is the product of the minimum receiving level signal in the NR cell and a preset parameter.

2. The method for restoring terminal services according to claim 1, characterized in that: The overlapping portion of the additional BWP and the initial BWP is less than or equal to 50% of the bandwidth of the initial BWP, and the synchronization signal block is not within the overlapping portion.

3. The method for restoring terminal services according to any one of claims 1 to 2, characterized in that: The method further includes performing a data transmission service on the initial BWP after the initial BWP random access succeeds.

4. The method for restoring terminal services according to claim 3, characterized in that: After the initial BWP random access is successful, performing a data transmission service on the initial BWP includes: Calculate the current data transmission rate of the initial BWP; When the data transmission rate of the initial BWP meets the user's demand, the data transmission service is performed on the initial BWP.

5. The method for restoring terminal services according to claim 1, characterized in that: The method further includes triggering reconstruction and reallocating channel resources when the data transmission rate of the initial BWP does not meet user requirements.

6. The method for restoring terminal services according to claim 1, characterized in that: The determining that the channel environment of the user terminal in the NR cell cannot meet the transmission requirement includes: Calculating a signal-to-noise ratio of a demodulation reference signal of the user terminal in a downlink channel; When the signal-to-noise ratio of the demodulation reference signal in the downlink channel is less than 0, it is determined that the channel environment of the user terminal in the NR cell cannot meet the transmission requirements.

7. A device for restoring terminal services, characterized in that: include: An environment acquisition module, configured to acquire a channel environment of the user terminal in the NR cell when the user terminal resides in the NR cell and performs a data transmission service on the additional BWP; An access module is used to trigger random access on an initial BWP after determining that the channel environment of the user terminal in the NR cell cannot meet the transmission requirements; the access module is also used to: obtain the reference signal receiving power and signal-to-noise ratio of the synchronization signal block in the NR cell; when the reference signal receiving power of the synchronization signal block meets the residence condition and the signal-to-noise ratio of the synchronization signal block is greater than the signal-to-noise ratio of the demodulation reference signal in the downlink channel in the additional BWP, trigger random access on the initial BWP; the access module is also used to: when the reference signal receiving power of the synchronization signal block is greater than a preset threshold, determine that the synchronization signal block meets the residence condition, wherein the preset threshold is the product of the minimum receiving level signal in the NR cell and a preset parameter.

8. The device for restoring terminal services according to claim 7, characterized in that: The overlapping portion of the additional BWP and the initial BWP is less than or equal to 50% of the bandwidth of the initial BWP, and the synchronization signal block is not within the overlapping portion.

9. The terminal service recovery device according to any one of claims 7 to 8, characterized in that: It also includes a service module, which is used to perform data services on the initial BWP after the initial BWP random access is successful.

10. The device for restoring terminal services according to claim 9, characterized in that: The business module is also used for: Calculate the current data transmission rate of the initial BWP; When the data transmission rate of the initial BWP meets the user's demand, the data service is performed on the initial BWP.

11. The device for restoring terminal services according to claim 9, characterized in that: The service module is also used to trigger reconstruction and reallocate channel resources when the data transmission rate of the initial BWP does not meet user requirements.

12. The terminal service recovery device according to claim 7, characterized in that: The access module is also used for: Calculating a signal-to-noise ratio of a demodulation reference signal of the user terminal in a downlink channel; When the signal-to-noise ratio of the demodulation reference signal in the downlink channel is less than 0, it is determined that the channel environment of the user terminal in the NR cell cannot meet the transmission requirements.

13. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method for recovering terminal services according to any one of claims 1 to 6 is implemented.

14. A terminal, characterized in that: include: Processor and memory; The memory is used to store computer programs; The processor is used to execute the computer program stored in the memory, so that the terminal executes the terminal service recovery method according to any one of claims 1 to 6.

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