A cell registration method, a terminal device and a storage medium

Abstract

Embodiments of the present application provide a cell registration method, a terminal device and a storage medium, including: in a case where it is judged that the terminal device is in a cell edge area, selecting a target cell configured with a supplementary uplink SUL carrier to perform cell registration; a signal strength in the cell edge area is lower than a first preset signal strength threshold.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electronic applications, in particular to a cell registration method, a terminal device and a storage medium. BACKGROUND

[0002] High frequency bands 3.3Ghz-3.6Ghz and 4.8Ghz-5.0Ghz are divided into working frequency bands of 5G, and the higher the frequency band is, the worse the coverage is. How to improve the uplink coverage becomes a problem to be solved in 5G deployment. At present, a supplementary uplink (SUL) carrier is used to enhance the uplink coverage, that is, a 5G cell can be configured with a normal uplink (NUL) carrier and a SUL carrier, and a terminal device transmits uplink through the SUL carrier.

[0003] However, due to the strong downlink coverage signal of the TDD cell without a SUL carrier, when registering a cell, the TDD cell will be preferentially selected. However, when the terminal device is at the edge of the TDD cell, the uplink coverage is weak, thereby causing the uplink transmission power of the terminal device to be limited. SUMMARY

[0004] Embodiments of the present application provide a cell registration method, a terminal device and a storage medium, which can reduce the limitation of the uplink transmission power of the terminal device.

[0005] The technical solution of the present application is implemented as follows:

[0006] In a first aspect, embodiments of the present application provide a cell registration method, which comprises:

[0007] In a case where it is judged that the terminal device is at a cell edge area, a target cell configured with a supplementary uplink (SUL) carrier is selected for cell registration; and the signal strength in the cell edge area is lower than a preset signal strength threshold.

[0008] In a second aspect, embodiments of the present application provide a terminal device, which comprises:

[0009] A cell registration unit is configured to, in a case where it is judged that the terminal device is at a cell edge area, select a target cell configured with a supplementary uplink (SUL) carrier for cell registration; and the signal strength in the cell edge area is lower than a preset signal strength threshold.

[0010] In a third aspect, embodiments of the present application provide a terminal device, which comprises a processor, a memory and a communication bus; and the processor implements the above-mentioned cell registration method when executing a running program stored in the memory.

[0011] In a fourth aspect, the embodiments of the present application provide a storage medium having a computer program stored thereon, which, when executed by a processor, implements the cell registration method.

[0012] The embodiments of the present application provide a cell registration method, a terminal device and a storage medium. The method comprises: in a case where it is judged that the terminal device is located in a cell edge area, selecting a target cell configured with a supplementary uplink (SUL) carrier to perform cell registration; and a signal strength in the cell edge area is lower than a first preset signal strength threshold. By using the implementation scheme, in the process of performing cell registration, the specific position of the terminal device is first judged. When it is judged that the terminal device is located in a cell edge position, the terminal device is limited to select a cell configured with an SUL carrier to perform registration, thereby enhancing the uplink coverage when the terminal device is located in a cell edge, and reducing the uplink transmission power of the terminal device. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 A flowchart of a cell registration method provided by the embodiments of the present application;

[0014] Figure 2 A schematic diagram of an exemplary cell registration method provided by the embodiments of the present application Figure One ;

[0015] Figure 3 A schematic diagram of an exemplary cell registration method provided by the embodiments of the present application Figure Two ;

[0016] Figure 4 A schematic diagram of an exemplary cell registration method provided by the embodiments of the present application Figure Three ;

[0017] Figure 5 A structure diagram of a terminal device 1 provided by the embodiments of the present application Figure One ;

[0018] Figure 6 A structure diagram of a terminal device 1 provided by the embodiments of the present application Figure Two . DETAILED DESCRIPTION

[0019] In order to enable a person skilled in the art to more fully understand the features and technical contents of the embodiments of the present application, the implementation of the embodiments of the present application will be described in detail below with reference to the accompanying drawings, which are only used for reference and are not intended to limit the embodiments of the present application.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used herein are only for the purpose of describing the embodiments of the present application and are not intended to limit the present application.

[0021] In the following description, "some embodiments" are referred to, which describe a subset of all possible embodiments, but it can be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments, and can be combined with each other without conflict. It should also be pointed out that the terms "first, second, third" involved in the embodiments of the present application are only used to distinguish similar objects, and do not represent a specific order of the objects. Understandably, "first, second, third" can be interchanged in a specific order or sequence as allowed, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0022] The embodiments of the present application provide a cell registration method, as shown in the method can comprise: Figure 1

[0023] S101, in the case of judging that the terminal device is in the cell edge area, the target cell of the supplementary uplink SUL carrier is selected to perform cell registration; the signal strength in the cell edge area is lower than the first preset signal strength threshold.

[0024] The cell registration method proposed in the embodiments of the present application is suitable for the scenario of preferentially registering the 5G cell configured with SUL carrier.

[0025] ​In some embodiments, the terminal device can be referred to as a user equipment (UE). The terminal device can be a personal communication service (PCS) phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), or the like. The terminal device can also be a smart phone, a tablet computer, a palm computer, a mobile station (MS), a mobile terminal, or the like. The terminal device can communicate with one or more network devices via a radio access network (RAN). For example, the terminal device can be a mobile phone (or so-called "cellular" phone) or a computer with a mobile termination or the like. The terminal device can also be a portable, pocket, hand-held, computer-embedded, or vehicle-mounted mobile apparatus that exchanges voice and / or data with a radio access network. The terminal device can also be a handheld device with wireless communication function, a computing device, or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future evolved network, and the like. The present application is not limited by implementation.

[0026] A network device is a device that provides a terminal device with a wireless communication function, including but not limited to an evolved Node B (eNB or e-NodeB for short), a macro base station, a micro base station (also referred to as a "small base station"), a pico base station, a base transceiver station (BTS), a baseband unit (BBU), an access point (AP), a transmission point (TP), or a new generation Node B (gNodeB) in a long-term evolution (LTE) system, a new radio (NR) system, or a licensed-assisted access using long-term evolution (LAA-LTE) system.

[0027] It should be noted that the cell edge area is an area in which the signal strength is lower than a preset signal strength threshold in the cell, and the uplink coverage of the cell edge area is weak, and the data transmitted by the terminal device in uplink may not be received by the base station. At this time, the terminal device in the embodiment of the application selects the target cell in which the SUL carrier is configured to perform cell registration.

[0028] In the embodiment of the application, there are three ways to determine whether the terminal device is in the cell edge area, which are described in detail below.

[0029] The first way to determine whether the terminal device is in the cell edge area is to determine whether the uplink access of the cell in which the terminal device is currently registered and which does not configure the SUL carrier is normal. If the uplink access of the cell in which the terminal device is currently registered is abnormal, it is determined that the terminal device is in the cell edge area. Otherwise, it is determined that the terminal device is not in the cell edge area.

[0030] It should be noted that the judgment condition of the uplink access of the cell which does not configure the SUL carrier being abnormal can include the following: Random Access Channel (RACH) failure, too small grant, failure to obtain an Acknowledge character (ACK) when sending uplink data, and too many uplink data retransmissions, etc. The specific condition can be selected according to the actual situation, and the embodiment of the application does not make specific limitations.

[0031] The second way to determine whether the terminal device is in the cell edge area is to sequentially determine the signal strength of the candidate cell searched by the terminal device in the process of performing cell search by the terminal device. If the terminal device determines that the signal strength of the searched candidate cell is lower than a first preset signal strength threshold, it is determined that the terminal device is in the cell edge area. Otherwise, it is determined that the terminal device is not in the cell edge area.

[0032] It should be noted that the first preset signal strength threshold is a signal strength threshold preset in the cell search scenario.

[0033] The third way to determine whether the terminal device is in the cell edge area is to monitor the signal strength of the terminal device in the currently registered cell in real time, and compare the signal strength of the terminal device in the currently registered cell with a second preset signal strength threshold. If the signal strength of the terminal device in the currently registered cell is lower than the second preset signal strength threshold, it is determined that the terminal device is in the cell edge area. Otherwise, it is determined that the terminal device is not in the cell edge area.

[0034] It should be noted that the second preset signal strength threshold is a signal strength threshold preset in the scenario of having registered to the cell.

[0035] It should be noted that the sizes of the first preset signal strength threshold and the second preset signal strength threshold can be set according to actual conditions, and the first preset signal strength threshold can be greater than the second preset signal strength threshold, the first preset signal strength threshold can also be less than the second preset signal strength threshold, or the first preset signal strength threshold can be equal to the second preset signal strength threshold, and the embodiments of the present application do not make specific limitations.

[0036] It should be noted that when the signal strength of the terminal device in the current registered cell is lower than the second preset signal strength threshold, the terminal device has the possibility of dropping the network, and therefore, whether the terminal device is at the cell edge area can also be judged based on whether the terminal device drops the network.

[0037] In the embodiments of the present application, for the above-mentioned first and second judgment methods, the terminal device performs cell search to obtain candidate cells, and sequentially obtains cell system messages of the candidate cells; if the first cell system message corresponding to the first cell in the candidate cells includes the SUL carrier identifier, the first cell is determined as the target cell for cell registration.

[0038] It should be noted that the cell system message is the SIB1 message, wherein the SupplementUplink field in the SIB1 message is used to mark the SUL carrier identifier, and therefore, in actual application process, whether the cell is a cell configured with SUL carrier is marked according to whether the SupplementUplink field exists in the SIB1 message of the cell.

[0039] In the embodiments of the present application, for the above-mentioned third judgment method, the terminal device obtains the historical registered cells of the terminal device; and finds the second cell including the SUL carrier identifier from the historical registered cells, and determines the second cell as the target cell for cell registration.

[0040] It should be noted that after the terminal device completes cell registration once, the registered cell identifier and the SUL carrier identifier corresponding to the cell are recorded to obtain the historical registered cells, and when the terminal device needs to perform cell reselection due to network drop, the terminal device reads the historical registered cells, finds the second cell including the SUL carrier identifier from the historical registered cells, and attempts to perform cell registration in the second cell preferentially.

[0041] Further, in the case where it is judged that the terminal device is not at the cell edge area, the historical registered cells are sequentially selected for cell registration in the order from near to far according to the registration time, or the candidate cells are selected for cell registration in the order from large to small according to the signal strength of the searched candidate cells.

[0042] It should be noted that, for the first and second judgment methods, in the case of judging that the terminal is not in the cell edge area, the terminal device sorts the searched candidate cells in order of signal strength from large to small, and then selects the sorted candidate cells in turn to attempt cell registration.

[0043] It should be noted that, for the third judgment method, in the case of judging that the terminal is not in the cell edge area, the terminal device selects the historical registration cells in turn to attempt cell registration in order of registration time from near to far.

[0044] It should be noted that the terminal device needs to record the cell identifier of the cell and the identifier of whether there is a SUL carrier each time the cell registration is completed. For the terminal device to read when it is offline.

[0045] It can be understood that in the process of cell registration, the specific position of the terminal device is first judged, and when it is judged that the terminal device is in the cell edge position, the terminal device is limited to select the cell with SUL carrier configuration for registration, thereby enhancing the uplink coverage of the terminal device in the cell edge, and thereby reducing the uplink transmission power of the terminal device.

[0046] Based on the above embodiment, the embodiment of the application proposes a cell registration method of a cell with SUL carrier configuration in an uplink access abnormal scenario, as shown in Figure 2 The method comprises:

[0047] 1. When it is detected that the terminal device is currently registered in a cell without SUL carrier configuration and the uplink access is abnormal, performing cell search to obtain candidate cells;

[0048] 2. Obtaining the SIB1 message of the candidate cell, and searching for the SupplementUplink field from the SIB1 message;

[0049] 3. If the SupplementUplink field is found from the SIB1 message of the candidate cell 1, the candidate cell 1 is preferentially selected for cell registration;

[0050] 4. If the SupplementUplink field is not found from the SIB1 message of the candidate cell, the candidate cells are selected in turn for cell registration in order of signal strength from large to small.

[0051] Based on the above embodiment, the embodiment of the application proposes a cell registration method of a cell with SUL carrier configuration in a cell selection or cell camping scenario, as shown in Figure 3 The method comprises:

[0052] 1. The terminal device performs cell search to obtain candidate cells;

[0053] 2. Obtain the signal strength of each candidate cell respectively;

[0054] 3. If the signal strength of each candidate cell is less than a first preset signal strength threshold, obtain the SIB1 message of each candidate cell;

[0055] 4. If the SupplementUplink field is found in the SIB1 message of the candidate cell 1, the candidate cell 1 is selected as the priority for cell registration.

[0056] 5. If the signal strength of the candidate cell 2 is greater than or equal to the first preset signal strength threshold, step 7 is performed.

[0057] 6. If the SupplementUplink field is not found in the SIB1 message of the candidate cell 1, step 7 is performed.

[0058] 7. The candidate cells are selected in the order of signal strength from large to small for cell registration.

[0059] Based on the above embodiment, the present embodiment proposes a cell registration method for configuring SUL carrier in a terminal network drop scenario, as shown in the following table, the method comprises the following steps: Figure 4

[0060] 1. Read the historical registration cells of the terminal device;

[0061] 2. Find the second cell including SUL carrier identifier from the historical registration cells;

[0062] 3. If the second cell is found from the historical registration cells, the second cell is selected as the priority for cell registration;

[0063] 4. If the second cell is not found from the historical registration cells, the historical registration cells are selected in the order of registration time from near to far for cell registration.

[0064] The present embodiment provides a terminal device. As shown in the following table, the terminal device 1 comprises: Figure 5

[0065] The cell registration unit 10 is configured to select the target cell configuring SUL carrier for cell registration when it is determined that the terminal device is in the cell edge area; the signal strength in the cell edge area is lower than the preset signal strength threshold.

[0066] Optionally, the terminal device 1 further comprises a judgment unit.

[0067] ​​The judging unit is configured to determine that the terminal device is located in the cell edge region if uplink access of a cell currently registered by the terminal device is abnormal.

[0068] Optionally, the judging unit is further configured to determine that the terminal device is located in the cell edge region if a signal strength of a candidate cell searched by the terminal device is lower than a first preset signal strength threshold when performing cell search.

[0069] Optionally, the judging unit is further configured to determine that the terminal device is located in the cell edge region if a signal strength of the terminal device in a cell currently registered by the terminal device is lower than a second preset signal strength threshold.

[0070] Optionally, the terminal device 1 further comprises a cell searching unit and an obtaining unit.

[0071] The cell searching unit is configured to perform cell search to obtain a candidate cell.

[0072] The obtaining unit is configured to sequentially obtain cell system messages of the candidate cell.

[0073] The cell registering unit 10 is further configured to determine a first cell as the target cell for cell registration if the first cell system message corresponding to the first cell in the candidate cell comprises the SUL carrier identifier.

[0074] Optionally, the terminal device 1 further comprises a searching unit.

[0075] The obtaining unit is further configured to obtain historical registration cells of the terminal device.

[0076] The searching unit is configured to search a second cell comprising the SUL carrier identifier from the historical registration cells and determine the second cell as the target cell for cell registration.

[0077] Optionally, the terminal device 1 further comprises a selecting unit.

[0078] The selecting unit is configured to, in a case where it is determined that the terminal device is not located in the cell edge region, sequentially select the historical registration cells for cell registration in an order from near to far according to registration time, or select the candidate cells for cell registration in an order from large to small according to signal strengths of the candidate cells.

[0079] The terminal device provided in the embodiment of the present application selects a target cell in which a supplementary uplink SUL carrier is configured to perform cell registration in a case where it is judged that the terminal device is located in a cell edge area; and the signal strength in the cell edge area is lower than a first preset signal strength threshold. It can be seen that in the process of performing cell registration, the terminal device provided in the embodiment first judges the specific location of the terminal device, and when it is judged that the terminal device is located in the cell edge area, the terminal device selects the cell in which the SUL carrier is configured to perform registration, thereby enhancing the uplink coverage when the terminal device is located in the cell edge area, and thereby reducing the uplink transmission power of the terminal device.

[0080] Figure 6 The constituent structure of the terminal device 1 provided in the embodiment of the present application is shown in Figure Two In actual application, based on the same disclosure concept of the above embodiment, as shown in Figure 6 The terminal device 1 of the embodiment includes a processor 11, a memory 12 and a communication bus 13.

[0081] In the process of the specific embodiment, the above cell registration unit 10, judgment unit, cell searching unit, acquisition unit, searching unit and selection unit can be realized by the processor 11 located on the terminal device 1, and the above processor 11 can be at least one of an application specific integrated circuit (ASIC), a digital signal processor (DSP), a digital signal processing device (DSPD), a programmable logic device (PLD), a field programmable gate array (FPGA), a CPU, a controller, a microcontroller, and a microprocessor. It can be understood that for different devices, the electronic device used to realize the function of the above processor can also be other devices, and the embodiment is not limited specifically.

[0082] In the embodiment of the present application, the communication bus 13 is used to realize the connection and communication between the processor 11 and the memory 12; and the processor 11 realizes the following cell registration method when executing the running program stored in the memory 12.

[0083] In a case where it is judged that the terminal device is located in a cell edge area, a target cell in which a supplementary uplink SUL carrier is configured is selected to perform cell registration; and the signal strength in the cell edge area is lower than a preset signal strength threshold.

[0084] Further, the processor 11 is further configured to determine that the terminal device is located at the cell edge region if uplink access of a cell currently registered by the terminal device is abnormal.

[0085] Further, the processor 11 is further configured to determine that the terminal device is located at the cell edge region if signal strength of a candidate cell searched by the terminal device during cell search is lower than a first preset signal strength threshold.

[0086] Further, the processor 11 is further configured to determine that the terminal device is located at the cell edge region if signal strength of a cell currently registered by the terminal device is lower than a second preset signal strength threshold.

[0087] Further, the processor 11 is further configured to perform cell search to obtain a candidate cell, and sequentially acquire cell system messages of the candidate cell; if a first cell system message corresponding to a first cell in the candidate cell includes SUL carrier identification, the first cell is determined as the target cell for cell registration.

[0088] Further, the processor 11 is further configured to acquire historical registration cells of the terminal device, find a second cell including SUL carrier identification from the historical registration cells, and determine the second cell as the target cell for cell registration.

[0089] Further, the processor 11 is further configured to, if it is determined that the terminal device is not located at the cell edge region, sequentially select historical registration cells for cell registration in order from near to far according to registration time, or select candidate cells for cell registration in order from large to small according to signal strength of the candidate cells.

[0090] The embodiment of the present application provides a storage medium having a computer program stored thereon, the computer readable storage medium stores one or more programs, the one or more programs can be executed by one or more processors, and the one or more programs are applied to a terminal device, and the computer program implements the cell registration method.

[0091] It should be noted that, in this text, the term "comprising", "including" or any other variant thereof is intended to cover a non-exclusive inclusion, so that a process, method, article or apparatus that includes a list of elements not only includes those elements, but also includes other elements not expressly listed or inherent to such process, method, article or apparatus. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, article or apparatus that includes the element.

[0092] From the above description of the embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be realized by means of software and the necessary general hardware platform, of course, they can also be realized by hardware, but in many cases the former is a better embodiment. Based on such understanding, the technical solutions of the present disclosure can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes a plurality of instructions for causing an image display device (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in various embodiments of the present disclosure.

[0093] The above description is only a preferred embodiment of the present application, and is not intended to limit the protection scope of the present application.

Claims

1. A method for registering a residential community, characterized in that, The method includes: If it is determined that the terminal device is in the cell edge area, the target cell with a supplementary uplink SUL carrier is selected for cell registration first; the signal strength in the cell edge area is lower than a preset signal strength threshold. Specifically, when determining whether uplink access to a cell currently registered by the terminal device that does not have a configured SUL carrier is normal, or when determining whether the terminal device is in the cell edge area by sequentially judging the signal strength of candidate cells searched by the terminal device during cell search, the step of preferentially selecting a target cell with a configured supplementary uplink SUL carrier for cell registration includes: Perform a cell search to obtain candidate cells, and then sequentially obtain the cell system messages of the candidate cells; the cell system messages are SIB1 messages. If the first cell system message corresponding to the first cell in the candidate cells includes a SUL carrier identifier, then the first cell is identified as the target cell for cell registration. Wherein, in determining whether the terminal device is in the cell edge region by real-time monitoring and comparing the signal strength of the terminal device in the currently registered cell with a second preset signal strength threshold, the step of preferentially selecting a target cell configured with supplementary uplink SUL carriers for cell registration includes: Obtain the historical registered cells of the terminal device; Find a second cell that includes a SUL carrier identifier from the historical registered cells, and identify the second cell as the target cell for cell registration; Before prioritizing the selection of the target cell for supplementing the uplink SUL carrier, the method further includes: If the terminal device determines that the signal strength of the candidate cell it has searched is lower than a first preset signal strength threshold when performing the cell search, then it determines that the terminal device is in the cell edge area.

2. The method according to claim 1, characterized in that, Before prioritizing the selection of the target cell for supplementing the uplink SUL carrier, the method further includes: If the uplink access of the cell currently registered by the terminal device is abnormal, it is determined that the terminal device is in the edge area of ​​the cell; the cell currently registered by the terminal device is the cell that has not been configured with a SUL carrier.

3. The method according to claim 1, characterized in that, Before prioritizing the selection of the target cell for supplementing the uplink SUL carrier, the method further includes: If the signal strength of the terminal device in the currently registered cell is lower than the second preset signal strength threshold, it is determined that the terminal device is in the edge area of ​​the cell.

4. The method according to claim 1, characterized in that, The method further includes: If it is determined that the terminal device is not located in the cell edge area, then historically registered cells are selected for cell registration in order of registration time from most recent to oldest, or candidate cells are selected for cell registration in order of signal strength from largest to smallest.

5. A terminal device, characterized in that, The terminal device includes: The cell registration unit is used to preferentially select a target cell with a supplementary uplink SUL carrier for cell registration when it is determined that the terminal device is in a cell edge area; the signal strength in the cell edge area is lower than a preset signal strength threshold. The cell registration unit is specifically used to perform cell search, obtain candidate cells, and sequentially acquire the cell system information of the candidate cells in turn, by determining whether the uplink access of the currently registered cell without configured SUL carrier is normal, or by determining whether the terminal device is in the cell edge area during the cell search process performed by the terminal device. If the first cell system information corresponding to the first cell in the candidate cells includes an SUL carrier identifier, then the first cell is identified as the target cell for cell registration. The cell registration unit is specifically used to determine whether the terminal device is in the cell edge area by real-time monitoring and judging the signal strength of the terminal device in the currently registered cell, and comparing the signal strength of the terminal device in the currently registered cell with a second preset signal strength threshold; then, it obtains the historical registered cells of the terminal device; searches for a second cell including a SUL carrier identifier from the historical registered cells, and determines the second cell as the target cell for cell registration. The judgment unit is used to determine that the terminal device is in the cell edge region if the terminal device determines that the signal strength of the candidate cell searched is lower than a first preset signal strength threshold when performing cell search.

6. A terminal device, characterized in that, The terminal device includes: a processor, a memory, and a communication bus; when the processor executes the running program stored in the memory, it implements the method as described in any one of claims 1-4.

7. A storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the method as described in any one of claims 1-4.

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