Cell access control method, apparatus and electronic device

Abstract

The application discloses a cell access control method and device and electronic equipment, and belongs to the technical field of communication. The method comprises the following steps: performing bandwidth checking on a target bandwidth based on bandwidth information of the target bandwidth of a first cell; the bandwidth information comprises a bandwidth range of the target bandwidth; in the case that the bandwidth range of the target bandwidth exceeds a bandwidth frequency range, the first cell is added to a forbidden cell list; the forbidden cell list comprises at least one cell that prohibits terminal access; and the target bandwidth comprises at least one of the following: a system bandwidth and a service bandwidth.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of communication, and particularly relates to a cell access control method and device and electronic equipment. BACKGROUND

[0002] With the increasing maturity of SA networks, more and more networks support BWP (Bandwidth Part) switching capabilities. The network side can flexibly, quickly and dynamically adjust the network configuration of the terminal to adapt to changes in business according to the terminal business type and traffic.

[0003] In related technologies, the terminal will follow the network indication to access the cell and configure the service bandwidth. Usually, the network indication information is susceptible to the actual wireless environment when it is issued. In the case of poor wireless environment, the accuracy of the indication information issued by the network side is reduced, thereby reducing the reliability of the network side configuration. Or, due to the incomplete configuration of BWP switching in the existing operator network, the reliability of the network side configuration is reduced, thereby causing the problem of hardware damage caused by the terminal accessing the cell beyond its capability range. SUMMARY

[0004] The purpose of the embodiments of the present application is to provide a cell access control method, device and electronic equipment, which can avoid the terminal accessing the cell beyond the capability range, improve the reliability of the terminal accessing the cell, and increase the protection capability of the terminal radio frequency hardware device.

[0005] In a first aspect, the embodiments of the present application provide a cell access control method, which comprises: performing bandwidth verification on a target bandwidth based on bandwidth information of the target bandwidth of a first cell; the bandwidth information comprises a bandwidth range of the target bandwidth; in the case that the bandwidth range of the target bandwidth exceeds a bandwidth frequency range, adding the first cell to a forbidden cell list; the forbidden cell list comprises at least one cell that prohibits terminal access; the target bandwidth comprises at least one of the following: system bandwidth, service bandwidth.

[0006] In a second aspect, the embodiments of the present application provide a bandwidth verification device, which comprises: a processing module and a verification module; the processing module is configured to perform bandwidth verification on a target bandwidth based on bandwidth information of the target bandwidth of a first cell; the bandwidth information comprises a bandwidth range of the target bandwidth; the processing module is configured to add the first cell to a forbidden cell list in the case that the bandwidth range of the target bandwidth exceeds a bandwidth frequency range; the forbidden cell list comprises at least one cell that prohibits terminal access; the target bandwidth comprises at least one of the following: system bandwidth, service bandwidth.

[0007] In a third aspect, an electronic device is provided, which includes a processor and a memory. The memory stores programs or instructions executable by the processor. The programs or instructions, when executed by the processor, implement the steps of the method according to the first aspect.

[0008] In a fourth aspect, a readable storage medium is provided, which stores programs or instructions. The programs or instructions, when executed by a processor, implement the steps of the method according to the first aspect.

[0009] In a fifth aspect, a chip is provided, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is configured to execute programs or instructions to implement the method according to the first aspect.

[0010] In a sixth aspect, a computer program product is provided, which is stored in a storage medium. The computer program product is executed by at least one processor to implement the method according to the first aspect.

[0011] In the embodiments of the present application, the terminal performs bandwidth verification on the target bandwidth of the first cell based on bandwidth information of the target bandwidth, the bandwidth information including a bandwidth range of the target bandwidth, and then adds the first cell to a forbidden cell list in a case where the bandwidth range of the target bandwidth does not belong to a bandwidth range. The forbidden cell list includes one or more cells forbidden to be accessed by the terminal. The target bandwidth includes at least one of a system bandwidth and a service bandwidth. Through the method, the terminal can perform bandwidth verification on the bandwidth of the first cell, and add the first cell to the forbidden cell list in a case where the bandwidth range of the target bandwidth of the first cell does not belong to the bandwidth range, so as to avoid the terminal accessing the first cell, thereby avoiding the terminal accessing a cell exceeding the capability range, improving the reliability of the terminal accessing the cell, and increasing the protection capability of the terminal radio frequency hardware device. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a flowchart of a cell access control method provided by some embodiments of the present application;

[0013] Figure 2 is a flowchart of a cell access control method provided by some embodiments of the present application;

[0014] Figure 3 is a flowchart of a cell access control method provided by some embodiments of the present application;

[0015] Figure 4 is a flowchart of a cell access control method provided by some embodiments of the present application;

[0016] Figure 5 is a flowchart of a cell access control method provided by some embodiments of the present application;

[0017] Figure 6 is a flowchart of a cell access control method provided by some embodiments of the present application;

[0018] Figure 7 is a flowchart of a cell access control method provided by some embodiments of the present application;

[0019] Figure 8 is a flowchart of a cell access control method provided by some embodiments of the present application;

[0020] Figure 9 is a flowchart of a cell access control method provided by some embodiments of the present application;

[0021] Figure 10 is a structural schematic diagram of a cell access control apparatus provided by some embodiments of the present application;

[0022] Figure 11 is a structural schematic diagram of an electronic device provided by some embodiments of the present application;

[0023] Figure 12 is a hardware structural schematic diagram of an electronic device provided by some embodiments of the present application. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0025] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of a kind and do not limit the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / ", generally indicates that the objects before and after are in an "or" relationship.

[0026] The cell access control method provided by the embodiments of the present application will be described in detail below with reference to the drawings, specific embodiments and application scenarios.

[0027] At present, the commercial scale of 5G SA (StandAlone) network is further expanded in May 2022, new frequency bands are opened for commercial use (such as N28, N8, etc.), and new operators join (such as radio and television). With the maturation of the SA network, there are more and more networks supporting bandwidth part (BWP) switching capabilities. The 5G mobile phone product white paper of domestic operators has clearly specified the BWP requirements: it needs to support network configuration of 1-4 uplink and downlink BWP, and support dynamic activation and switching of BWP through RRC and DCI signaling. The leading 5G terminal platform in the industry also supports BWP switching function. The network flexibly, quickly and dynamically adjusts the terminal network configuration to adapt to business changes according to the terminal business type and traffic; and when the terminal traffic is small, the network can instruct the terminal to switch to a low-bandwidth BWP to work, in order to achieve the purpose of energy saving. It should be noted that the above BWP bandwidth can also be referred to as business bandwidth or working bandwidth.

[0028] In related technologies, the BWP activation and switching process of existing 5G terminals on the market all follow the instructions of the network side, and work in the business bandwidth within the system bandwidth of the corresponding frequency band after accessing the cell. Due to the incomplete configuration of BWP switching in existing operator networks, combined with the existence of network equipment sharing in the case of new operators joining, and the special network environment of N28 type A+type B working frequency band differentiation, the network side configuration reliability is reduced

[0029] It should be noted that type A and type B respectively refer to the frequency range of N28 frequency band, specifically, the type A uplink frequency range is 703-733MHz, and the type B uplink frequency range is 718-748MHz.

[0030] According to the existing logic, the terminal completely follows the BWP activation and switching logic issued by the network, and the terminal cannot judge whether the initial BWP exceeds its own capability range; if the network issues a BWP switching instruction, it will switch from the current BWP to another configured BWP. Therefore, in related technologies, the terminal may attempt to access the working frequency point beyond the expectation, resulting in irreversible risks such as terminal hardware damage (e.g., PA burnout).

[0031] In the cell access control method provided by the embodiment of the present application, on the one hand, for the scenario of system bandwidth and service bandwidth configuration and change, and the characteristics of the terminal supporting BWP capability and the network issuing BWP switching command, the present application reduces or avoids the terminal unable to access or repeatedly and continuously in abnormal state caused by the network abnormally configuring service bandwidth, and avoids the irreversible situation of hardware damage caused by the terminal accessing the high frequency band exceeding its own capability range. On the other hand, the terminal side performs bandwidth checking in the scenario of system bandwidth or service bandwidth change, the present application provides two checking standards of software standard bandwidth range and radio frequency device bandwidth range, marks and limits the access of the terminal for the cell (network abnormally configured cell) that fails to pass the checking, and at the same time, due to the terminal behavior not matching the network expected behavior, the terminal initiates RRC re-establishment (RRC Re-Establishment) behavior to the same frequency and adjacent frequency cells of the target cell, so as to quickly restore the RRC connection.

[0032] Figure 1 The schematic diagram of the cell access control method provided by the embodiment of the present application is shown in FIG. 1. Figure 1 As shown in FIG. 1, the cell access control method provided by the embodiment of the present application can include the following steps 201 and 202:

[0033] Step 201: performing bandwidth checking on the target bandwidth based on the bandwidth information of the target bandwidth of the first cell.

[0034] In the above, the bandwidth information includes the bandwidth range of the target bandwidth; the target bandwidth includes at least one of the following: system bandwidth, service bandwidth.

[0035] It should be noted that in order to adapt to the complex and changeable system bandwidth, the partial bandwidth BWP is proposed in 5G NR, that is, the system bandwidth of the terminal is dynamically configured according to different service types. The BWP is defined as a set of continuous multiple resource blocks (RB, Resource Block) in a carrier. According to different application scenarios, the BWP can be divided into the following 3 categories:

[0036] 1) Initial BWP (Initial BWP): used for information reception before terminal access, mainly used for receiving system messages and random access related information;

[0037] 2) First active BWP (First Active BWP): the first terminal dedicated BWP, the terminal can perform data transmission and reception on this BWP.

[0038] 3) Default BWP: a terminal-specific BWP, which is configured for the terminal in the radio resource control reconfiguration (RRCReconfiguration).

[0039] It should be noted that the BWP of the cell can be the service bandwidth of the cell. In some cases, the service bandwidth can also be referred to as the working bandwidth. The service bandwidth of the first cell can be understood as the service bandwidth configured by the network side device for the terminal camping on the first cell, i.e., the service bandwidth used by the terminal when performing service transmission and reception in the first cell.

[0040] The embodiments of the present application can be applicable to the cell initial access scenario, the intra-cell service bandwidth switching scenario, and the inter-cell switching scenario.

[0041] In the embodiments of the present application, the first cell can include at least one of the following:

[0042] The cell indicated by the system message sent by the network side device;

[0043] The serving cell of the terminal;

[0044] The target cell of the terminal, which is the target cell for the terminal to perform cell switching;

[0045] The secondary cell of the terminal.

[0046] Exemplarily, the system message can be SIB 1, and the cell related information for the terminal to perform cell access is carried in the system message, which can include the cell identifier, the cell bandwidth information, etc.

[0047] Exemplarily, the terminal receives the SIB 1 sent by the network side device, and determines the first cell according to the cell identifier carried in the SIB 1. Then, the terminal can perform bandwidth checking on the system bandwidth of the first cell to determine whether to access the first cell subsequently.

[0048] Exemplarily, the terminal selects a cell to camp on after the cell selection is completed, and the cell camped on by the terminal is the serving cell of the terminal. Then, the terminal can perform bandwidth checking on the service bandwidth of the serving cell to determine whether to perform service bandwidth switching in the serving cell and to perform access restriction on the serving cell subsequently.

[0049] Exemplarily, after the terminal receives the reconfiguration message sent by the network side device, the terminal performs bandwidth checking on the service bandwidth or the initial service bandwidth of the target cell carried in the reconfiguration message to determine whether to switch to the target cell and whether to perform access restriction on the target cell subsequently.

[0050] Exemplarily, in a case that the terminal operates in the secondary cell, the terminal can perform bandwidth checking on a service bandwidth of the secondary cell to determine whether to access the secondary cell.

[0051] It should be noted that the secondary cell refers to a cell operating in a secondary frequency.

[0052] In the embodiment of the present application, the bandwidth range of the target bandwidth of the first cell can be a frequency range of the first cell. Exemplarily, the frequency range of the first cell can include an uplink frequency range and a downlink frequency range. Exemplarily, the bandwidth range of the target bandwidth of the first cell can be 720-740 MHz or 730-760 MHz, and the like.

[0053] In the embodiment of the present application, the terminal can perform bandwidth checking on the system bandwidth and the service bandwidth of the first cell to determine whether the system bandwidth and the service bandwidth of the first cell meet the checking standard, and add the first cell to the forbidden cell list to limit access to the first cell in a case that the checking standard is not met.

[0054] Step 202: In a case that the bandwidth range of the target bandwidth exceeds the bandwidth frequency range, the first cell is added to the forbidden cell list.

[0055] The forbidden cell list includes one or more cells that the terminal is prohibited to access.

[0056] In the embodiment of the present application, the terminal can perform bandwidth checking on the target bandwidth by comparing the bandwidth range of the target bandwidth with the bandwidth frequency range.

[0057] Optionally, in the embodiment of the present application, in a case that the target bandwidth is a system bandwidth, the bandwidth frequency range includes a software standard frequency range.

[0058] In a case that the target bandwidth is a service bandwidth, the bandwidth frequency range includes a radio frequency device bandwidth range.

[0059] Exemplarily, the software bandwidth range is a corresponding standard frequency range set by software, that is, the software standard frequency range can be a preconfigured frequency range.

[0060] It should be noted that the corresponding standard frequency range set by software can be referred to as a software standard frequency range.

[0061] Exemplarily, the software standard frequency range can include at least one of uplink UL: 703-743 MHz and downlink DL: 758-798 MHz, and the software standard frequency range can be set to other frequency ranges according to actual needs, which is not limited in the embodiment of the present application.

[0062] Exemplarily, for the special frequency band N28, it can be divided into type A (UL: 703-733 MHz) and type B (UL: 718-748 MHz) frequency bands. The protocol standard has an N28 uplink frequency range of 703-748 MHz, a downlink frequency range of 758-803 MHz, and a bandwidth of 45M. Since the last 5MHz is a military frequency band, the defined software standard frequency band range can be UL: 703-743 MHz / DL: 758-798 MHz, i.e., a future commercial N28 40MHz large bandwidth range.

[0063] It should be noted that, without special setting, the radio frequency capability (PA chip support range, antenna module) of the terminal of type A cannot access the 40M network. When the standard frequency band range is set to contain the cell system bandwidth range, i.e., the cell system bandwidth is within the standard range, the cell is considered to be accessible.

[0064] Exemplarily, taking the software standard frequency band range of 703-743 MHz as an example, assuming that the bandwidth range of the system bandwidth of the first cell accessed by the terminal is 720-740 MHz, since the bandwidth range of the system bandwidth of the first cell is within the above-mentioned software standard frequency band range, it is represented that the terminal can camp on the first cell.

[0065] Exemplarily, in combination with the above example, assuming that the bandwidth range of the system bandwidth of the first cell accessed by the terminal is 720-760 MHz, since part of the frequency band (744 MHz-760 MHz) of the system bandwidth of the first cell does not belong to the frequency band within the software standard frequency band range of 703-743 MHz, i.e., the system bandwidth of the first cell does not belong to the above-mentioned software standard frequency band range, it is represented that the terminal accessing the first cell has the risk of exceeding the terminal's own capability range, and there is a possibility of hardware damage, so the first cell is added to the prohibited cell list to avoid the terminal accessing the first cell again in the future.

[0066] Exemplarily, the above-mentioned radio frequency device bandwidth range is a frequency range determined according to the radio frequency parameters of the terminal.

[0067] Optionally, the radio frequency parameters of the terminal can include the antenna transmit power, power amplifier index, etc. of the terminal.

[0068] Exemplarily, the terminal can determine the radio frequency capability of the terminal according to the radio frequency parameters of the terminal, and then determine the above-mentioned bandwidth frequency range according to the radio frequency capability.

[0069] It should be noted that the radio frequency capability of the terminal refers to the hardware capability range, which is related to the hardware attributes such as the radio frequency antenna and the power amplifier of the terminal.

[0070] It should be noted that the bandwidth verification manner in the embodiments of the present application is applicable to a new bandwidth (band) scene, and has stronger compatibility. Specifically, in the embodiments of the present application, if it is judged that the system bandwidth exceeds the preset standard band range, access is directly prohibited. The difference in verification lies in that the verification of the system bandwidth can be different from the terminal itself radio frequency capability (the system bandwidth range can be larger). In the case of supporting the same band network and part of the type field (for example, the N28 frequency band), if the type A terminal is not in the initial BWP judgment range of type A, it will be judged as not accessible. In the present application, the activated BWP (service bandwidth) judgment is the real working type A frequency band, which can ensure that the existing 30M terminal can access the 40M bandwidth network in the subsequent design of the N28 40M large bandwidth, thereby improving the compatibility of the network.

[0071] The cell access control method provided in the embodiments of the present application comprises the following steps: a terminal performs bandwidth verification on a target bandwidth of a first cell based on bandwidth information of the target bandwidth, the bandwidth information comprising a bandwidth range of the target bandwidth; and the terminal adds the first cell to a prohibited cell list in a case where the bandwidth range of the target bandwidth does not belong to a bandwidth frequency range; wherein the prohibited cell list comprises one or more cells that the terminal is prohibited from accessing, and the target bandwidth comprises at least one of a system bandwidth and a service bandwidth. Through the method, the terminal can perform bandwidth verification on the bandwidth of the first cell, and add the first cell to the prohibited cell list in a case where the bandwidth range of the target bandwidth of the first cell does not belong to the bandwidth frequency range, so as to avoid the terminal accessing the first cell, thereby avoiding the terminal accessing a cell that exceeds the capability range, improving the reliability of the terminal accessing the cell, and increasing the protection capability of the terminal radio frequency hardware device.

[0072] Optionally, the application scenario of the cell access control method in the embodiments of the present application is a cell initial access scenario. Specifically, after the terminal is powered on and accesses the network, the terminal performs initial search on the cell, acquires synchronization with the cell in time and frequency, and reads broadcast messages of the cell. Then, the terminal selects a suitable cell for camping and initiates an RRC establishment and reconfiguration process in the cell after camping on the cell, so as to complete the initial access of the cell. Optionally, in a case where the first cell is a cell indicated by a system message sent by a network side device, the target bandwidth comprises a system bandwidth and a service bandwidth of the first cell.

[0073] Optionally, as shown in Figure 2 The step 201 can comprise the following steps 201a1 to 201a4:

[0074] Step 201a1: receiving a system message sent by a network side device.

[0075] The system message includes bandwidth information of a system bandwidth of the first cell.

[0076] At step 201a2, bandwidth of the system bandwidth is checked based on the bandwidth information of the system bandwidth of the first cell.

[0077] At step 201a3, a first reconfiguration message sent by the network side device is received in a case where the bandwidth range of the system bandwidth belongs to the bandwidth range of the bandwidth band.

[0078] The first reconfiguration message includes bandwidth information of a service bandwidth of the first cell.

[0079] At step 201a4, bandwidth of the service bandwidth is checked based on the bandwidth information of the service bandwidth of the first cell.

[0080] The first reconfiguration message is an RRC reconfiguration message.

[0081] The system bandwidth of the first cell is indicated by a system message sent by the network side device. The terminal receives the system message of the corresponding frequency point in the frequency scanning process, reads the system uplink bandwidth information and the downlink bandwidth information from the system message 1, and the bandwidth is the system bandwidth.

[0082] It should be noted that the system bandwidth and the initial service bandwidth are two different bandwidths, and the system bandwidth and the initial service bandwidth can be configured to be the same or different in size in the existing network.

[0083] In some embodiments of the present application, the terminal receives the system message of the corresponding frequency point in the frequency scanning process, reads the system bandwidth information from the system message, and performs the checking of the system bandwidth.

[0084] In a case where the system bandwidth exceeds the software standard frequency band range, it is indicated that the checking of the system bandwidth fails, the terminal adds the cell to the forbidden cell list, and does not initiate access to the cell in a certain period of time in the future, and does not receive subsequent RRC messages, and does not perform RRC establishment, registration, authentication and other processes, so that in a case where multiple same-frequency cells meet the access conditions, the time gain of the checking is greatly improved.

[0085] In a case where the system bandwidth belongs to the software standard frequency band range, it is indicated that the checking of the system bandwidth is passed, the terminal sends a radio resource control (RRC) establishment request message to the network side device, initiates an RRC establishment process, and performs a normal RRC establishment process in the cell to ensure the signaling interaction between the terminal and the base station.

[0086] In the related art, in the initial access scenario, assuming that there are 3 cells, the terminal needs to read the system message of the first cell, then performs RRC establishment, registration, capability reporting, authentication, reconfigures the service bandwidth, and then judges that it is not supported, and needs to perform the above-mentioned process for 3 times respectively to find a suitable cell to register, which is a process of seconds in time. In the cell access control method provided in the embodiments of the present application, in the initial access scenario, assuming that there are 3 cells, the terminal only needs to read the system message 1 for 3 times to complete the first step of verification, which is a process of milliseconds in time. That is, in the embodiments of the present application, the terminal performs a system bandwidth verification before performing RRC access to determine whether to access, which greatly improves the time gain, especially in the case that there are many same-frequency cells and all meet the access conditions. In the embodiments of the present application, the terminal can perform the first step of judgment verification after reading the system message 1. If the verification fails, the subsequent process is interrupted, the subsequent system message does not need to be read, and the RRC establishment process, or the registration process, or the authentication process is no longer initiated, which greatly improves the cell access efficiency.

[0087] The cell access control method provided in the embodiments of the present application can perform bandwidth verification after the terminal reads the system message 1. If the verification fails, the subsequent process is interrupted, the subsequent system message does not need to be read, and the RRC establishment process, or the registration process, or the authentication process is no longer initiated, which greatly improves the cell access efficiency. In the embodiments of the present application, if the system bandwidth is judged to be out of the preset software standard bandwidth range, the access is directly prohibited. The verification of the system bandwidth is performed by the software standard bandwidth range, so that the system bandwidth can be different from the radio frequency capability of the terminal itself. For example, the system bandwidth range can be larger, so that in the case that the same bandwidth network and part of the frequency band are supported, if the service bandwidth of the type A terminal does not belong to type A, it will be judged as not accessible. Since the service bandwidth of the first cell is the frequency band that the terminal really works in, this is an important point in the subsequent design of N28 40M large bandwidth, which ensures that the existing 30M terminal can access the 40M bandwidth network, so as to be applicable to the new bandwidth scenario and have stronger compatibility.

[0088] Further, after the RRC establishment process is performed, the network side device issues an RRC reconfiguration message to perform an RRC reconfiguration process. The RRC reconfiguration message carries the bandwidth information of the service bandwidth of the terminal, that is, the active BWP range. Further, the terminal can perform bandwidth verification on the service bandwidth, and in the case that the bandwidth range of the service bandwidth belongs to the radio frequency device bandwidth range of the terminal, that is, in the case that the verification passes, the subsequent process of the RRC reconfiguration is performed, and in the case that the verification fails, the current RRC connection is disconnected and the network is searched again.

[0089] It should be noted that the bandwidth range of the service bandwidth of the terminal belongs to the bandwidth range of the radio frequency device of the terminal, indicating that the bandwidth check of the service bandwidth is passed.

[0090] Exemplarily, in the case that the bandwidth range of the service bandwidth of the terminal exceeds the bandwidth range of the radio frequency device of the terminal, it indicates that the service bandwidth check of the terminal is not passed, and in this case, the terminal can disconnect the current RRC connection, update the network search frequency point list, and re-initiate a fast network search to ensure that other candidate cells can be quickly found to initiate access.

[0091] Optionally, in the case that the bandwidth range of the target bandwidth belongs to the bandwidth frequency range, the terminal can determine whether the power index information of the terminal belongs to the preset power range, and add the first cell to the forbidden cell list if the power index information does not belong to the preset power range.

[0092] Exemplarily, the above-mentioned preset power range can be a power range determined based on the hardware attribute of the terminal, and in the case that the bandwidth range of the target bandwidth exceeds the preset power range, it indicates that the bandwidth range of the first cell has a risk of exceeding the terminal capability.

[0093] Exemplarily, the terminal can determine whether the service bandwidth check of the first cell is passed and whether the power of the corresponding PA module is normal, if the service bandwidth check is passed and the power of the corresponding PA module does not exceed the preset power range, the subsequent cell access process is normally executed; if the service bandwidth check is passed and the power of the corresponding PA module exceeds the preset power range, the first cell is added to the forbidden cell list. In this way, the purpose of adding PA power monitoring is to monitor the actual power index of the terminal through hardware, and by increasing hardware monitoring, the judgment conclusion can be more reliable.

[0094] In combination with the above-mentioned embodiments, the cell access control method provided by the embodiments of the present application in the cell initial access scenario is explained and described through specific embodiments as follows, as shown in the following figure, the cell access control method can include the following steps 21 to 29: Figure 3

[0095] Exemplarily, before step 201, it further includes step 21:

[0096] Step 21: reading the system message of the target frequency range cell.

[0097] Exemplarily, the terminal receives the system message sent by the network side device in the frequency scanning process, and reads the bandwidth information of the system bandwidth of the first cell from the system message.

[0098] It should be noted that the above-mentioned system message can be SIB 1.

[0099] ​Exemplarily, the step 201 can include steps 22-24 and step 28, and between the steps 24 and 28, steps 25-27 are further included.

[0100] Step 22: Perform bandwidth check on the system bandwidth of the first cell.

[0101] Exemplarily, the terminal compares the system bandwidth of the first cell with the preset software standard frequency band range to perform the bandwidth check on the system bandwidth of the first cell.

[0102] Step 23: Determine whether the system bandwidth check is passed, if yes, execute step 26, if not, execute step 24.

[0103] Exemplarily, when the system bandwidth exceeds the preset software standard frequency band range, it is determined that the system bandwidth check is passed, and when the system bandwidth does not exceed the preset software standard frequency band range, it is determined that the system bandwidth check is not passed, and further, if not passed, it is considered that there is a risk of exceeding the terminal's own capability range to access the cell, and there is a possibility of hardware damage. After the check fails at this step, the subsequent RRC message does not need to be received, and the RRC establishment, registration, authentication and other processes are not performed. In this way, when multiple same-frequency cells meet the access conditions, the time gain of the check is greatly improved.

[0104] Step 24: Add the first cell to the forbidden cell list.

[0105] Exemplarily, when the system bandwidth of the first cell exceeds the bandwidth frequency band range, it is considered that the system bandwidth check fails, and the cell is added to the forbidden cell list, and subsequent access to the cell is not initiated within a certain period of time.

[0106] Step 25: Update the search list to perform fast search.

[0107] Exemplarily, after the first cell is added to the forbidden cell list, the terminal can update the search frequency point list and re-initiate a fast search to ensure that other candidate cells can be quickly found to initiate access.

[0108] Step 26: Send an RRC establishment request message.

[0109] Exemplarily, when the bandwidth range of the system bandwidth belongs to the bandwidth frequency band range, the terminal can send an RRC establishment request message to the network side device, and perform the subsequent RRC establishment process to establish an RRC connection with the network side, thereby ensuring the signaling interaction between the terminal and the base station.

[0110] Step 27: Send an RRC reconfiguration request message.

[0111] For example, after the terminal and the network side have established an RRC connection, the terminal sends an RRC reconfiguration request message to the network side to initiate the RRC reconfiguration process. The network side sends an RRC reconfiguration message to indicate the first active BWP of the first cell, that is, to activate the BWP range.

[0112] Step 28: Perform bandwidth verification on the service bandwidth of the first cell.

[0113] For example, when the bandwidth range of the first cell system bandwidth is within the bandwidth frequency band range, the terminal receives the first reconfiguration message sent by the network side device to perform bandwidth verification on the service bandwidth of the first cell in order to determine whether the frequency band range in which the terminal operates in the first cell is within the terminal's capability range and whether there is a risk of exceeding the terminal's radio frequency capability.

[0114] For example, after step 202 above, the following step 29 is also included:

[0115] Step 29: Determine whether the power of the PA module in the terminal exceeds the preset power range.

[0116] For example, if the service bandwidth of the first cell passes the verification, the terminal can determine whether the power of the terminal's PA module is normal. If it exceeds the preset power range, the terminal will proceed to step 24 to add the first cell to the list of prohibited cells. If it does not exceed the preset power range, the terminal is considered to meet the access conditions, and the cell access process will be completed.

[0117] In this way, the system bandwidth and service bandwidth of the cell are verified in the initial access scenario of the terminal. If the verification fails, a network search operation is performed again and the cell is added to the list of prohibited cells. This avoids the problem of irreversible hardware damage to the terminal caused by the mismatch between the terminal's capabilities and the cell's bandwidth.

[0118] The cell access control method provided in this application addresses scenarios where system bandwidth and service bandwidth configurations and changes occur, and the irresistible nature of BWP-enabled terminals receiving BWP handover commands from the network. Upon receiving a system message, the terminal can perform bandwidth verification on the system bandwidth of the first cell. If the system bandwidth verification passes, it receives a reconfiguration message from the network side, verifies the service bandwidth carried in the reconfiguration message, and only executes the subsequent RRC reconfiguration process if the service bandwidth verification passes. By incorporating system bandwidth and service bandwidth verification, this method reduces or avoids terminal access failures or repeated / continuous abnormal states caused by abnormal network configuration of service bandwidth, and prevents irreversible hardware damage caused by terminals accessing high-frequency bands beyond their capabilities.

[0119] Optionally, the application scenario of the access control method in this application embodiment is an intra-cell service bandwidth switching scenario. Specifically, when the terminal completes registration in the serving cell, it receives a reconfiguration message sent by the network side. According to the bandwidth switching indication information carried in the reconfiguration message, the terminal switches the current service bandwidth of the serving cell to the service bandwidth indicated by the bandwidth switching indication information. That is, the terminal switches the service bandwidth used when working in the serving cell to the service bandwidth indicated by the bandwidth switching indication information. Optionally, when the first cell is the serving cell of the terminal, the target bandwidth of the first cell includes the service bandwidth of the first cell.

[0120] Optionally, such as Figure 4 As shown, prior to step 201 above, the cell access control method provided in this application embodiment may further include the following step A1:

[0121] Step A1: Receive the second configuration message sent by the network-side device.

[0122] The second configuration message mentioned above includes the configuration information of the first cell; the configuration information includes the bandwidth information of the service bandwidth of the first cell.

[0123] Optionally, step 201 above may include step 201b1:

[0124] Step 201b1: If the service bandwidth of the first cell includes at least two service bandwidths, perform bandwidth verification on each of the at least two service bandwidths based on the bandwidth information of the at least two service bandwidths.

[0125] For example, the second reconfiguration message mentioned above can be an RRC reconfiguration message.

[0126] For example, the terminal can monitor whether the network side has configured multiple service bandwidths for the first cell based on the bandwidth information of the first cell carried in the second reconfiguration message. If more than one service bandwidth is configured, all service bandwidths are verified. If only one service bandwidth is configured, it is assumed that no service bandwidth will occur in the cell.

[0127] In this way, when multiple service bandwidths are configured in the first cell, bandwidth verification can be performed on all service bandwidths, thereby preventing the terminal from switching to service bandwidths that it does not support, and improving the reliability of bandwidth switching within the first cell.

[0128] Further, optionally, in embodiments of this application, such as Figure 5 As shown, after step 201b1 above, the cell access control method provided in this application embodiment further includes the following steps 201b2 to 201b4:

[0129] Step 201b2: If at least one of the above-mentioned service bandwidths has a bandwidth range that exceeds the bandwidth frequency band range, the above-mentioned at least one service bandwidth shall be identified as an abnormal service bandwidth.

[0130] Step 201b3: Receive the first handover control message sent by the network-side device.

[0131] Step 201b4: Add the first cell mentioned above to the list of prohibited cells.

[0132] For example, when performing service bandwidth switching within a cell, the terminal can obtain at least two service bandwidths configured for the terminal by the network side, perform bandwidth verification on each service bandwidth, and mark the service bandwidths that fail the bandwidth verification as abnormal service bandwidths.

[0133] For example, taking a bandwidth range of 700MHz-760MHz as an example, assuming that the first cell is configured with two service bandwidths: service bandwidth 1, service bandwidth 2, and service bandwidth 3, and assuming that the bandwidth range of service bandwidth 1 is 690MHz-730MHz, the bandwidth range of service bandwidth 2 is 710MHz-740MHz, and the bandwidth range of service bandwidth 3 is 750MHz-780MHz, since both service bandwidth 1 and service bandwidth 3 have frequency bands that do not belong to the 700MHz-760MHz range, that is, both service bandwidth 1 and service bandwidth 2 exceed the bandwidth range, then both service bandwidth 1 and service bandwidth 2 are marked as abnormal service bandwidths.

[0134] For example, the aforementioned first handover control message is used to instruct a service bandwidth handover within the first cell. For example, the aforementioned first handover control message is used to instruct the first service bandwidth of the first cell to be switched to the aforementioned abnormal service bandwidth.

[0135] For example, when a terminal receives a handover control message from the network side instructing the terminal to switch service bandwidth within the cell, it can determine whether the handover control message indicates a switch to an abnormal service bandwidth. If the handover control message indicates a switch to an abnormal service bandwidth, the terminal will not switch to that abnormal service bandwidth and will add the first cell to the prohibited cell list to avoid re-accessing the first cell in the future. If the handover control message indicates a switch to a service bandwidth other than the abnormal service bandwidth in the first cell, the subsequent cell handover process will be executed normally.

[0136] The following specific embodiments illustrate the cell access control method provided in this application for a BWP handover scenario within a cell. Figure 6 As shown, the cell access control method may include the following steps 31 to 39:

[0137] For example, before step 201 above, the steps 31 and 32 are also included:

[0138] Step 31: The terminal completes registration in the serving cell.

[0139] For example, the aforementioned service cell can also be a resident cell.

[0140] For example, in this scenario, it is assumed that the terminal has completed the initial access, the current cell (i.e., the first cell) has completed registration, and the service bandwidth verification has been passed.

[0141] Step 32: Determine whether the first cell is configured with at least two service bandwidths.

[0142] For example, the terminal can monitor whether the network side has configured multiple service bandwidths for the terminal through the second reconfiguration message. If not, it is assumed that no BWP handover will occur in the cell.

[0143] It should be noted that the bandwidth of at least two of the above services is configured at different stages from the initial service bandwidth, and the two may be the same or different.

[0144] It should be noted that the above-mentioned service bandwidth can be used to activate the BWP, and the above-mentioned initial service bandwidth can be used to activate the initial BWP.

[0145] For example, step 201 above may include step 33:

[0146] Step 33: Perform bandwidth verification for each service bandwidth separately.

[0147] For example, when the service bandwidth of the first cell includes at least two service bandwidths, the terminal performs bandwidth verification on each of the at least two service bandwidths based on the bandwidth information of the at least two service bandwidths.

[0148] That is, if multiple (more than 1) active BWPs are configured, the bandwidth of all active BWPs is checked, that is, whether the bandwidth of each active BWP exceeds the RF capability range of the corresponding frequency band of the terminal (the frequency range supported by the PA chip and antenna module).

[0149] For example, step 202 may include steps 34 and 38, and between steps 34 and 38, steps 35 to 37 may also be included.

[0150] Step 34: Determine whether the service bandwidth verification passes. If yes, proceed to step 35; otherwise, proceed to step 36.

[0151] For example, the terminal performs bandwidth verification on each of the at least two service bandwidths to determine whether there is any bandwidth that exceeds the bandwidth frequency range in the at least two bandwidths.

[0152] Step 35: Receive the handover control message sent by the network side.

[0153] For example, the first handover control message mentioned above can be a BWP handover instruction.

[0154] For example, when the terminal receives a handover control message sent by the network side...

[0155] Step 36: Identify service bandwidth that exceeds the bandwidth band range as abnormal service bandwidth.

[0156] For example, a terminal can add a bandwidth identifier to service bandwidth that exceeds the bandwidth band range to mark the service bandwidth exceeding the bandwidth band range as abnormal service bandwidth. For example, the bandwidth identifier can be identified as BWP-ID.

[0157] For example, if there is no abnormal bandwidth in the service BWP, it can normally receive the reconfiguration BWP handover and DCI BWP handover instructions issued by the network and complete the BWP handover within the cell.

[0158] For example, if it is determined that there is abnormal service bandwidth, that is, the bandwidth range of the configured service bandwidth exceeds the terminal's radio frequency capability range, it is marked as abnormal service bandwidth.

[0159] Step 37: Determine whether the first handover control message has been received.

[0160] For example, the terminal monitors and determines whether it has received a handover instruction from the network side to switch to the abnormal service bandwidth, that is, the first handover control message. If no instruction to switch to the abnormal service bandwidth is received, the service bandwidth within the cell is switched. If an instruction to switch to the abnormal service bandwidth is received, step 38 is executed.

[0161] Step 38: Add the first cell to the list of prohibited cells.

[0162] For example, after step 202 above, the following step 39 is also included:

[0163] Step 39: Initiate the RRE process in a cell with the same frequency or adjacent frequency.

[0164] For example, in order to quickly restore network connectivity, a terminal can send an RRE request to the serving cell to request RRC reconfiguration to be performed in a cell of the same or adjacent frequency.

[0165] In this way, when the terminal performs a service bandwidth switch within the cell, it can perform bandwidth verification on the service bandwidth corresponding to the cell, mark the abnormal bandwidth that fails the verification, and, if the network side instructs the terminal to switch to the abnormal bandwidth, not perform a service bandwidth switch within the cell, and add the cell to the prohibited cell list to prevent the terminal from accessing the cell again.

[0166] The cell access control method provided in this application embodiment allows the terminal to perform bandwidth verification on the service bandwidth corresponding to the cell when performing service bandwidth switching within the cell. Terminals that fail the verification are marked and their access is restricted. At the same time, since the terminal behavior is inconsistent with the expected network behavior, the terminal immediately initiates RRE behavior on the target cell in the same frequency and adjacent frequency, so that the RRC connection is quickly restored.

[0167] Optionally, the access control method in this embodiment is applied in an inter-cell handover scenario. Specifically, when the signal of the currently camped cell is poor, the terminal reports the signal measurement information of the currently camped cell to the network side. The network side sends a reconfiguration message to the terminal based on the signal measurement information. The reconfiguration message carries a cell handover command. The terminal then hands over from the currently camped cell to the target cell indicated by the cell handover command. Optionally, when the first cell is the terminal's target cell, the target bandwidth includes service bandwidth or initial bandwidth.

[0168] Optionally, such as Figure 7 As shown, prior to step 201 above, the cell access control method provided in this application embodiment may further include the following step B1:

[0169] Step B1: Receive the second handover control message sent by the network-side device.

[0170] The second handover control message includes: bandwidth configuration information of the target cell; the second handover control message instructs the terminal to hand over to the target cell.

[0171] Optionally, step 201 above may include step 201c1 or step 201c2:

[0172] Step 201c1: If it is determined that the target cell has configured service bandwidth based on the bandwidth configuration information of the target cell in the second handover control message, perform bandwidth verification on the aforementioned service bandwidth based on the bandwidth information of the target cell's service bandwidth; or,

[0173] Step 201c2: If it is determined that the target cell has no service bandwidth configured according to the bandwidth configuration information of the target cell in the second handover control message, the bandwidth of the initial bandwidth is verified based on the bandwidth information of the initial bandwidth of the target cell.

[0174] For example, the second handover control message can be a cell handover indication message sent by a network-side device. For example, the second handover control message can be an RRC reconfiguration message.

[0175] In some embodiments of this application, the aforementioned second handover control message can indicate handover between NR (New Radio) cells, that is, both the first cell and the target cell can be NR cells.

[0176] For example, the terminal can monitor whether the command issued by the network side has a cell handover indication. If there is no cell handover indication, it is assumed that the first cell will not undergo inter-cell handover at present. If there is a cell handover indication, the terminal can determine whether the target cell to be switched to has service bandwidth based on the bandwidth configuration information of the target cell carried in the cell handover indication. If the target cell has service bandwidth, the terminal can perform bandwidth verification on the service bandwidth of the target cell. If the target cell does not have service bandwidth, the terminal can perform bandwidth verification on the initial bandwidth of the target cell.

[0177] It should be noted that the initial bandwidth, or initial BWP, is a defined service BWP specified in the protocol, which is the channel bandwidth configured by the terminal for use in the cell. The protocol stipulates that if no service bandwidth is configured, the terminal will operate on the initial BWP, which can be the Firstactive BWP.

[0178] For example, when it is determined from the second handover control message that the target cell is configured with service bandwidth, the terminal can perform bandwidth verification on the service bandwidth of the target cell, that is, compare the bandwidth range of the service bandwidth of the target cell with the bandwidth range of the terminal's radio frequency device to determine whether the bandwidth range of the service bandwidth of the target cell exceeds the bandwidth range of the terminal's radio frequency device.

[0179] Furthermore, if the bandwidth of the service bandwidth does not exceed the bandwidth of the terminal's radio frequency device, the bandwidth verification of the target cell is considered to have passed, and the terminal can subsequently switch to the target cell and operate within the service bandwidth of the target cell; if the service bandwidth exceeds the bandwidth of the terminal's radio frequency device, the bandwidth verification of the target cell is considered to have failed, and the terminal will not switch to the target cell, and the target cell will be added to the prohibited cell list to prevent the terminal from subsequently accessing the target cell.

[0180] For example, if the terminal determines that the target cell is not configured with service bandwidth according to the second handover control message, the terminal can perform bandwidth verification on the initial bandwidth of the target cell, that is, compare the bandwidth range of the initial bandwidth of the target cell with the bandwidth range of the terminal's radio frequency device to determine whether the bandwidth range of the initial bandwidth of the target cell exceeds the bandwidth range of the terminal's radio frequency device.

[0181] Furthermore, if the initial bandwidth does not exceed the bandwidth range of the terminal's radio frequency device, the bandwidth verification for the target cell is considered successful, and the terminal can subsequently switch to the target cell and operate within the initial bandwidth of the target cell. If the initial bandwidth exceeds the bandwidth range of the terminal's radio frequency device, the bandwidth verification for the target cell is considered unsuccessful, and the terminal will not switch to the target cell. Instead, the target cell will be added to the prohibited cell list to prevent the terminal from subsequently accessing the target cell.

[0182] Furthermore, if the service bandwidth or initial bandwidth of the first cell exceeds the bandwidth range of the terminal's radio frequency device, the terminal can disconnect the current RRC connection and send an RRE request to the network side in the current serving cell to request RRC reconfiguration in other cells, thereby quickly restoring the network connection.

[0183] The following specific embodiments illustrate the cell access control method provided in this application for inter-cell handover scenarios. Figure 8 As shown, the cell access control method may include the following steps 41 to 49:

[0184] It should be noted that in the inter-cell handover scenario, the terminal has completed the initial access and the registration of the cell it is staying in.

[0185] For example, before step 201 above, the steps 41 to 43 are also included:

[0186] Step 41: Complete the registration in the residential community.

[0187] Step 42: Determine whether a second handover control message has been received.

[0188] For example, the terminal monitors the signaling messages sent by the network and determines whether there is a second handover control message. If no second handover control message is received, it is considered that no inter-cell handover will occur at present. If a second handover control message is received, step 43 is executed.

[0189] Step 43: Determine whether the target cell is configured with service bandwidth. If yes, proceed to step 44; otherwise, proceed to step 48.

[0190] For example, step 201 can be replaced by step 44, and step 202 can include steps 45 and 46; or, step 201 can be replaced by step 48, and step 202 can include steps 49 and 46; after step 202, step 47 is also included.

[0191] Step 44: Perform bandwidth verification on the target cell's service bandwidth.

[0192] For example, if it is determined that the target cell is configured with service bandwidth, then it is verified whether the service bandwidth is within the range of the terminal's radio frequency capability.

[0193] Step 45: Determine whether the service bandwidth verification passes.

[0194] For example, if the service bandwidth of the target cell does not exceed the bandwidth range of the terminal's radio frequency device, that is, if the service bandwidth is within the range of the terminal's radio frequency capability, the service bandwidth verification passes, and the cell handover is performed normally; if the service bandwidth of the target cell exceeds the bandwidth range of the terminal's radio frequency device, step 46 is executed.

[0195] Step 46: Add the target cell to the list of prohibited cells.

[0196] For example, when a target cell is added to the list of prohibited cells, the terminal will not report any measurements of that target cell for a period of time.

[0197] Step 47: Initiate the RRE process.

[0198] For example, in order to quickly restore network connectivity, the terminal immediately triggers the RRE procedure on the same or adjacent frequency;

[0199] Step 48: Verify the initial bandwidth of the target cell.

[0200] For example, if step 43 determines that the target cell has no configured service bandwidth, that is, the initial BWP bandwidth is used as the service bandwidth at this time, then the range of the initial BWP bandwidth is verified.

[0201] Step 49: Determine whether the initial bandwidth verification passed.

[0202] For example, if the initial bandwidth of the target cell exceeds the bandwidth range of the terminal's radio frequency device, i.e. the initial bandwidth verification passes, then step 46 is executed; if the initial bandwidth of the target cell does not exceed the bandwidth range of the terminal's radio frequency device, then the target cell is considered an accessible cell, and the user switches to the target cell.

[0203] In the cell access control method provided in this application embodiment, when the terminal performs inter-cell service bandwidth switching, it can pre-check the service bandwidth or initial bandwidth of the target cell, restrict the access of the terminal in the cell that fails the check, and since the terminal behavior is inconsistent with the expected network behavior, the terminal immediately initiates RRE behavior for the co-frequency and adjacent frequency cells of the target cell, so that the RRC connection is quickly restored.

[0204] Optionally, in the embodiments of this application, such as Figure 9 The cell access control method provided in this application embodiment may further include the following step C1:

[0205] Step C1: If the target bandwidth range falls within the aforementioned bandwidth frequency band range and the terminal's power information does not fall within the preset power range, add the first cell to the prohibited cell list.

[0206] In the initial access scenario of a cell, the intra-cell service bandwidth switching scenario, and the inter-cell service bandwidth switching scenario, the terminal can perform bandwidth verification on the target bandwidth of the first cell. If the target bandwidth is within the bandwidth frequency band range, the terminal can further determine whether the terminal's power index information is within the preset power range. If the power index information is not within the preset power range, the terminal can add the first cell to the prohibited cell list.

[0207] For example, the aforementioned preset power range can be a power range determined based on the hardware attributes of the terminal. If the bandwidth range of the target bandwidth exceeds the preset power range, it indicates that there is a risk that the bandwidth range of the first cell exceeds the terminal's capabilities.

[0208] For example, in a service bandwidth handover scenario within a cell, after the terminal has verified at least two service bandwidths and performed the service bandwidth handover, it can monitor whether the power of the terminal's PA module is normal when the terminal is working on the new service bandwidth. If the power of the corresponding PA module exceeds a preset power range, the first cell is added to the prohibited cell list. In this way, by monitoring the actual power indicators through hardware, it can be determined whether the service bandwidth range in which the terminal is working exceeds the terminal's radio frequency capability range. By adding hardware monitoring, the judgment conclusion can be made more reliable.

[0209] The cell access control method provided in this application distinguishes between bandwidth verification within the software and hardware capabilities of the terminal, and adds a power amplifier (PA) as an auxiliary judgment. Hardware capabilities include, but are not limited to, RF filter specifications, as well as PA chip specifications and antenna modules. Bandwidth verification improves cell access reliability and provides protection for the devices, verifying and judging whether cell access is normal from a software perspective. The addition of PA detection to determine whether the power exceeds the device's typical value is based on hardware monitoring of its actual power specifications. This hardware monitoring makes the judgment more reliable.

[0210] The cell access control method provided in this application can be executed by a cell access control device. This application uses bandwidth verification to execute the cell access control method as an example to illustrate the cell access control device provided in this application.

[0211] Figure 10 This is a schematic diagram of a cell access control device provided in an embodiment of this application, as shown below. Figure 10 As shown, the cell access control device provided in this application embodiment may include a verification module 501 and a processing module 502. The verification module 501 is used to perform bandwidth verification on the target bandwidth based on the bandwidth information of the target bandwidth of the first cell; the bandwidth information includes the bandwidth range of the target bandwidth.

[0212] Processing module 502 is used to add the first cell to the prohibited cell list when the bandwidth range of the target bandwidth exceeds the bandwidth frequency band range;

[0213] The list of prohibited cells includes at least one cell that prohibits terminal access, and the target bandwidth includes at least one of the following: system bandwidth and service bandwidth.

[0214] Optionally, in this embodiment of the application, the first cell includes at least one of the following:

[0215] The cell indicated by the system message sent by the network-side device;

[0216] The terminal's service area;

[0217] The target cell for the terminal is the cell to which the terminal will perform cell handover.

[0218] Optionally, in the embodiments of this application, when the target bandwidth is the system bandwidth, the bandwidth frequency band range includes the software standard frequency band range; when the target bandwidth is the service bandwidth, the bandwidth frequency band range includes the radio frequency device bandwidth range.

[0219] Optionally, in this embodiment of the application, when the first cell is the cell indicated by the system message sent by the network-side device, the target bandwidth includes the system bandwidth and service bandwidth of the first cell;

[0220] The above-mentioned device further includes: a receiving module; the receiving module is used to receive system messages sent by network-side devices, the system messages including bandwidth information of the system bandwidth of the first cell;

[0221] The verification module is specifically used to verify the system bandwidth based on the bandwidth information of the system bandwidth of the first cell.

[0222] The receiving module is also used to receive a first configuration message sent by the network-side device when the bandwidth range of the system bandwidth is within the bandwidth frequency band range. The first configuration message includes the bandwidth information of the service bandwidth of the first cell.

[0223] The verification module is specifically used to verify the bandwidth of the service bandwidth based on the bandwidth information of the service bandwidth of the first cell.

[0224] Optionally, in this embodiment of the application, when the first cell is the serving cell of the terminal, the first target bandwidth includes the service bandwidth of the first cell;

[0225] The above-mentioned device further includes: a sending module; the sending module is used to receive a second configuration message sent by the network-side device, the second configuration message including configuration information of the first cell; the configuration information including bandwidth information of the service bandwidth of the first cell;

[0226] The verification module is specifically used to perform bandwidth verification on each of the at least two service bandwidths based on the bandwidth information of the at least two service bandwidths when the service bandwidth of the first cell includes at least two service bandwidths.

[0227] Optionally, in this embodiment of the application, the verification module is further configured to determine at least one service bandwidth as an abnormal service bandwidth when at least one of the at least two service bandwidths has a bandwidth range that exceeds the bandwidth frequency band range.

[0228] The receiving module is used to receive a first handover control message sent by the network-side device; the first handover control message is used to indicate that the first service bandwidth of the first cell is switched to the abnormal service bandwidth.

[0229] Optionally, the processing module is also configured to add the first cell to the prohibited cell list after receiving the first handover control message sent by the network-side device.

[0230] Optionally, in this embodiment, when the first cell is the target cell of the terminal, the target bandwidth includes service bandwidth or initial bandwidth; the receiving module is used to receive a second handover control message sent by the network-side device, the second handover control message including: bandwidth configuration information of the target cell; the second handover control message instructs the terminal to handover to the target cell;

[0231] In this embodiment of the application, the verification module is specifically used to perform bandwidth verification on the service bandwidth based on the bandwidth information of the service bandwidth of the target cell when it is determined that the target cell is configured with service bandwidth according to the bandwidth configuration information of the target cell in the second handover control message; and to perform bandwidth verification on the initial bandwidth based on the bandwidth information of the initial bandwidth of the target cell when it is determined that the target cell is not configured with service bandwidth according to the bandwidth configuration information of the target cell in the second handover control message.

[0232] Optionally, in this embodiment of the application, the verification module is further configured to add the first cell to the prohibited cell list when the bandwidth range of the target bandwidth is within the bandwidth frequency band range and the power information of the terminal is not within the preset power range.

[0233] The cell access control device provided in this application embodiment performs bandwidth verification on the target bandwidth of a first cell based on the bandwidth information of the target bandwidth. The bandwidth information includes the bandwidth range of the target bandwidth. Then, if the target bandwidth range does not fall within the bandwidth frequency band range, the terminal adds the first cell to a prohibited cell list. The prohibited cell list includes one or more cells that the terminal is prohibited from accessing. The target bandwidth includes at least one of system bandwidth and service bandwidth. Through this method, the cell access control device can perform bandwidth verification on the first cell and add the first cell to the prohibited cell list if the target bandwidth range of the first cell does not fall within the bandwidth frequency band range, thereby preventing the terminal from accessing the first cell. This avoids the terminal accessing cells beyond its capabilities, improves the reliability of terminal cell access, and increases the protection capability for the terminal's radio frequency hardware.

[0234] The cell access control device in this application embodiment can be an electronic device or a component of an electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal or other devices besides a terminal. For example, the electronic device can be a mobile phone, tablet computer, laptop computer, PDA, in-vehicle electronic device, mobile internet device (MID), augmented reality (AR) / virtual reality (VR) device, robot, wearable device, ultra-mobile personal computer (UMPC), netbook, or personal digital assistant (PDA), etc. It can also be a server, network attached storage (NAS), personal computer (PC), television set (TV), ATM, or self-service machine, etc. This application embodiment does not specifically limit the specific device.

[0235] The cell access control device in this application embodiment can be a device with an operating system. This operating system can be Android, iOS, or other possible operating systems; this application embodiment does not specifically limit the specific operating system used.

[0236] The cell access control device provided in this application embodiment can achieve... Figures 1 to 4 The various processes implemented in the method implementation examples will not be described again here to avoid repetition.

[0237] Optionally, such as Figure 11 As shown, this application embodiment also provides an electronic device 600, including a processor 601 and a memory 602. The memory 602 stores a program or instructions that can run on the processor 601. When the program or instructions are executed by the processor 601, they implement the various steps of the above-described cell access control method embodiment and can achieve the same technical effect. To avoid repetition, they will not be described again here.

[0238] It should be noted that the electronic devices in the embodiments of this application include the mobile electronic devices and non-mobile electronic devices described above.

[0239] Figure 12 A schematic diagram of the hardware structure of an electronic device to implement an embodiment of this application.

[0240] The electronic device 100 includes, but is not limited to, components such as: radio frequency unit 101, network module 102, audio output unit 103, input unit 104, sensor 105, display unit 106, user input unit 107, interface unit 108, memory 109, and processor 110.

[0241] Those skilled in the art will understand that the electronic device 100 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 110 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 12 The electronic device structure shown does not constitute a limitation on the electronic device. The electronic device may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0242] Among them, processor 110 and processor 110 are used to perform bandwidth verification on the target bandwidth based on the bandwidth information of the target bandwidth of the first cell; the bandwidth information includes the bandwidth range of the target bandwidth;

[0243] Processor 110 is used to add the first cell to the prohibited cell list when the bandwidth range of the target bandwidth exceeds the bandwidth frequency band range;

[0244] The list of prohibited cells includes at least one cell that prohibits terminal access, and the target bandwidth includes at least one of the following: system bandwidth and service bandwidth.

[0245] Optionally, in this embodiment of the application, the first cell includes at least one of the following:

[0246] The cell indicated by the system message sent by the network-side device;

[0247] The terminal's service area;

[0248] The target cell for the terminal is the cell to which the terminal will perform cell handover.

[0249] Optionally, in the embodiments of this application, when the target bandwidth is the system bandwidth, the bandwidth frequency band range includes the software standard frequency band range; when the target bandwidth is the service bandwidth, the bandwidth frequency band range includes the radio frequency device bandwidth range.

[0250] Optionally, in this embodiment of the application, when the first cell is the cell indicated by the system message sent by the network-side device, the target bandwidth includes the system bandwidth and service bandwidth of the first cell;

[0251] The above-mentioned device further includes: a radio frequency unit 101; the radio frequency unit 101 is used to receive system messages sent by network-side devices, the system messages including bandwidth information of the system bandwidth of the first cell;

[0252] The processor 110 is specifically used to perform bandwidth verification on the system bandwidth based on the bandwidth information of the system bandwidth of the first cell;

[0253] The radio frequency unit 101 is also used to receive a first configuration message sent by the network side device when the bandwidth range of the system bandwidth is within the bandwidth frequency band range. The first configuration message includes bandwidth information of the service bandwidth of the first cell.

[0254] The processor 110 is specifically used to perform bandwidth verification on the service bandwidth based on the bandwidth information of the service bandwidth of the first cell.

[0255] Optionally, in this embodiment of the application, when the first cell is the serving cell of the terminal, the first target bandwidth includes the service bandwidth of the first cell;

[0256] The above-mentioned device further includes: a radio frequency unit 101; the radio frequency unit 101 is used to receive a second configuration message sent by a network-side device, the second configuration message including configuration information of a first cell; the configuration information including bandwidth information of the service bandwidth of the first cell;

[0257] The processor 110 is specifically used to perform bandwidth verification on each of the at least two service bandwidths based on the bandwidth information of the at least two service bandwidths when the service bandwidth of the first cell includes at least two service bandwidths.

[0258] Optionally, in this embodiment of the application, the processor 110 is further configured to determine at least one service bandwidth as an abnormal service bandwidth when at least one of the at least two service bandwidths has a bandwidth range that exceeds the bandwidth frequency band range.

[0259] Radio frequency unit 101 is used to receive a first handover control message sent by network side equipment; the first handover control message is used to indicate that the first service bandwidth of the first cell is switched to abnormal service bandwidth;

[0260] The processor 110 is also configured to add the first cell to the prohibited cell list after receiving the first handover control message sent by the network-side device.

[0261] Optionally, in this embodiment of the application, when the first cell is the target cell of the terminal, the target bandwidth includes service bandwidth or initial bandwidth;

[0262] The radio frequency unit 101 is used to receive a second handover control message sent by the network side device. The second handover control message includes: bandwidth configuration information of the target cell; and instructs the terminal to handover to the target cell.

[0263] The processor 110 is specifically configured to perform bandwidth verification on the service bandwidth based on the bandwidth information of the service bandwidth of the target cell when it is determined that the target cell is configured with service bandwidth according to the bandwidth configuration information of the target cell in the second handover control message; and to perform bandwidth verification on the initial bandwidth based on the bandwidth information of the initial bandwidth of the target cell when it is determined that the target cell is not configured with service bandwidth according to the bandwidth configuration information of the target cell in the second handover control message.

[0264] Optionally, in this embodiment of the application, the processor 110 is further configured to add the first cell to the prohibited cell list when the bandwidth range of the target bandwidth is within the bandwidth frequency band range and the power information of the terminal is not within the preset power range.

[0265] The electronic device provided in this application embodiment performs bandwidth verification on the target bandwidth of a first cell based on the bandwidth information of the target bandwidth. The bandwidth information includes the bandwidth range of the target bandwidth. If the bandwidth range of the target bandwidth does not fall within the bandwidth frequency band range, the first cell is added to a prohibited cell list. The prohibited cell list includes one or more cells that are prohibited from terminal access. The target bandwidth includes at least one of system bandwidth and service bandwidth. Through this method, the electronic device can perform bandwidth verification on the bandwidth of the first cell and add the first cell to the prohibited cell list if the bandwidth range of the target bandwidth of the first cell does not fall within the bandwidth frequency band range. This prevents the terminal from accessing the first cell, thereby avoiding terminal access to cells beyond its capabilities, improving the reliability of terminal cell access, and increasing the protection capability of the terminal's radio frequency hardware.

[0266] It should be understood that, in this embodiment, the input unit 104 may include a graphics processing unit (GPU) 1041 and a microphone 1042. The GPU 1041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 106 may include a display panel 1061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 107 includes at least one of a touch panel 1071 and other input devices 1072. The touch panel 1071 is also called a touch screen. The touch panel 1071 may include a touch detection device and a touch controller. Other input devices 1072 may include, but are not limited to, a physical keyboard, function keys (such as volume control buttons, power buttons, etc.), a trackball, a mouse, and a joystick, which will not be described in detail here.

[0267] The memory 109 can be used to store software programs and various data. The memory 109 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 109 may include volatile memory or non-volatile memory, or both. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 109 in the embodiments of this application includes, but is not limited to, these and any other suitable types of memory.

[0268] Processor 110 may include one or more processing units; optionally, processor 110 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 110.

[0269] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described cell access control method embodiments and achieve the same technical effects. To avoid repetition, they will not be described again here.

[0270] The processor mentioned above is the processor in the electronic device described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk. This application also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above-described cell access control method embodiments and achieve the same technical effects. To avoid repetition, it will not be described again here.

[0271] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0272] This application provides a computer program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the above-described cell access control method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0273] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0274] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0275] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A cell access control method, characterized by, The method comprises: performing bandwidth checking on the target bandwidth based on bandwidth information of a target bandwidth of a first cell; the bandwidth information comprises a bandwidth range of the target bandwidth; in a case where the bandwidth range of the target bandwidth exceeds a bandwidth range range, adding the first cell to a forbidden cell list; wherein the forbidden cell list comprises at least one cell forbidden for terminal access, and the target bandwidth comprises at least one of a system bandwidth and a service bandwidth, and the terminal supports BWP capability; in a case where the target bandwidth is the system bandwidth, the bandwidth range range is a preset software standard bandwidth range; or in a case where the target bandwidth is the service bandwidth, the bandwidth range range is a radio device bandwidth range determined based on radio frequency capability of the terminal.

2. The method of claim 1, wherein, The first cell comprises at least one of: a cell indicated by system information sent by a network side device; a serving cell of the terminal; a target cell of the terminal, which is a target cell for cell switching of the terminal.

3. The method of claim 1, wherein, in a case where the first cell is a cell indicated by system information sent by a network side device, the target bandwidth comprises a system bandwidth and a service bandwidth of the first cell; the performing bandwidth checking on the target bandwidth based on bandwidth information of a target bandwidth of a first cell comprises: receiving system information sent by a network side device, wherein the system information comprises bandwidth information of a system bandwidth of a first cell; performing bandwidth checking on the system bandwidth based on the bandwidth information of the system bandwidth of the first cell; in a case where the bandwidth range of the system bandwidth belongs to the bandwidth range range, receiving a first reconfiguration message sent by a network side device, wherein the first reconfiguration message comprises bandwidth information of a service bandwidth of the first cell; performing bandwidth checking on the service bandwidth based on the bandwidth information of the service bandwidth of the first cell.

4. The method of claim 1, wherein, in a case where the first cell is a serving cell of the terminal, the target bandwidth of the first cell comprises a service bandwidth of the first cell; before the performing bandwidth checking on the target bandwidth based on bandwidth information of a target bandwidth of a first cell, the method further comprises: receiving a second reconfiguration message sent by a network side device, wherein the second reconfiguration message comprises configuration information of the first cell; the configuration information comprises bandwidth information of a service bandwidth of the first cell; the performing bandwidth checking on the target bandwidth based on bandwidth information of a target bandwidth of a first cell comprises: in a case where the service bandwidth of the first cell comprises at least two service bandwidths, performing bandwidth checking on each of the at least two service bandwidths based on bandwidth information of the at least two service bandwidths, respectively.

5. The method of claim 4, wherein, after the performing bandwidth checking on each of the at least two service bandwidths based on bandwidth information of the at least two service bandwidths, respectively, the method further comprises: in a case where the bandwidth range of at least one of the at least two service bandwidths exceeds the bandwidth range range, determining the at least one service bandwidth as an abnormal service bandwidth; receive a first handover control message sent by a network side device; the first handover control message is used to indicate switching a first service bandwidth of the first cell to an abnormal service bandwidth; add the first cell to a forbidden cell list.

6. The method of claim 1, wherein, The first cell is a target cell of the terminal; the target bandwidth includes a service bandwidth or an initial bandwidth; Before bandwidth checking the target bandwidth based on bandwidth information of the target bandwidth of the first cell, the method further includes: receive a second handover control message sent by a network side device, the second handover control message including bandwidth configuration information of the target cell; the second handover control message instructs the terminal to switch to the target cell; The bandwidth checking the target bandwidth based on bandwidth information of the target bandwidth of the first cell includes: In a case where it is determined according to the bandwidth configuration information of the target cell in the second handover control message that the target cell is configured with a service bandwidth, bandwidth checking the service bandwidth based on bandwidth information of the service bandwidth of the target cell; In a case where it is determined according to the bandwidth configuration information of the target cell in the second handover control message that the target cell is not configured with a service bandwidth, bandwidth checking the initial bandwidth based on bandwidth information of the initial bandwidth of the target cell.

7. The method according to any one of claims 1 to 6, characterized in that, The method further includes: In a case where the bandwidth range of the target bandwidth belongs to the bandwidth frequency range and the power information of the terminal does not belong to a preset power range, add the first cell to the forbidden cell list.

8. A cell access control apparatus characterized by comprising: The device includes a checking module and a processing module; The checking module is configured to check the target bandwidth based on bandwidth information of the target bandwidth of the first cell; the bandwidth information includes a bandwidth range of the target bandwidth; The processing module is configured to add the first cell to a forbidden cell list in a case where the bandwidth range of the target bandwidth exceeds a bandwidth frequency range. The forbidden cell list includes at least one cell that the terminal is forbidden to access; the target bandwidth includes at least one of the following: a system bandwidth, a service bandwidth, and the terminal supports BWP capability; In a case where the target bandwidth is the system bandwidth, the bandwidth frequency range is a preset software standard frequency range; or in a case where the target bandwidth is the service bandwidth, the bandwidth frequency range is a radio frequency device bandwidth range determined based on the radio frequency capability of the terminal.

9. An electronic device, comprising: The device includes a processor and a memory, the memory stores programs or instructions executable on the processor and programs or instructions stored on the memory and executable on the processor, and the programs or instructions are executed by the processor to implement the steps of the cell access control method according to any one of claims 1-7.

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