Method and device for inhibiting non-RedCap cell to improve access stability

Abstract

The invention provides a method and device for inhibiting a non-RedCap cell from improving access stability, and the method comprises the steps: loading a blacklist of UE, the UE currently resides in a first network, and the blacklist is used for storing redirected frequency points and PCIs which are not supported in a connection state of the first network; obtaining a target cell supporting a second network in response to a redirection instruction of the base station; determining whether to execute a redirection instruction based on whether the target cell exists in the blacklist; when redirection succeeds, the UE is connected to a second network of the target cell, when redirection fails, the PCI of the target cell is associated with a timer and then added to the blacklist, and the timer is used for setting the inhibition duration of the PCI of the target cell. According to the method and the device, the access abnormity occurring when the RedCap UE tries to access the non-RedCap cell is avoided, the stable access of the UE is ensured, the service continuity is ensured, and the power consumption loss is avoided.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and in particular, to a method and apparatus for suppressing non-RedCap cells to improve access stability. Background Art

[0002] With the rapid development of 5G communication technologies, the demand for lower cost, lower power consumption, and lower complexity in 5G deployments for application scenarios such as industrial Internet has become increasingly strong. For this reason, the 3rd Generation Partnership Project (3GPP) proposed the 5G RedCap technology in the R17 protocol. The implementation of 5G RedCap technology requires that both the user equipment (UE) and the base station support the RedCap capability. However, base stations supporting 5G RedCap technology have currently only been deployed in some private network environments or some pilot environments, which may cause RedCap UEs to be unable to access the 5G network in other environments.

[0003] Normally, the UE is default-configured to support Long Term Evolution (LTE) technology and New Radio (NR) access technology. When the UE is in an environment that does not support RedCap, the UE's attempt to access NR will fail because the cells in the environment do not support the RedCap capability. According to the network search logic, the UE will then access the LTE network. After registering with the LTE network, the UE will measure and report the NR cells and cell configuration information present in the environment according to measurement events. Subsequently, the base station determines whether the signal strength of the NR cell meets the redirection threshold based on the UE's measurement report, and directly notifies the UE to initiate a redirection from LTE to NR, ignoring whether the cell has the RedCap feature. During the redirection process, the UE discovers that the current cell does not have the RedCap capability through the System Information Block 2 (SIB2) message sent by the base station, and will declare the redirection as failed. After the redirection process fails, the UE falls back to LTE access again, ultimately resulting in the UE repeatedly redirecting between LTE and NR, that is, the terminal access is unstable, presenting a ping-pong phenomenon. This ping-pong phenomenon will seriously affect the continuity of services, and moreover, significantly increase the power consumption of RedCap products. Summary of the Invention

[0004] This application provides a method and apparatus for suppressing non-RedCap cells to improve access stability, so as to solve the problem in the prior art that when a Redcap UE is in a cell environment that does not support RedCap, a ping-pong phenomenon occurs between the Redcap UE and NR and LTE.

[0005] In a first aspect, the present application provides a method for suppressing the improvement of access stability in a non-RedCap cell, including:

[0006] Load the blacklist of the user equipment UE, where the UE currently camps on the first network, and the blacklist is used to store the frequencies and physical cell identifiers PCI that do not support redirection in the connection state of the first network;

[0007] In response to a redirection instruction from the base station, obtain a target cell that supports the second network;

[0008] If the PCI of the target cell belongs to the blacklist, do not execute the redirection instruction, and the UE continues to camp on the first network;

[0009] If the PCI of the target cell does not belong to the blacklist, execute the redirection instruction. When the redirection is successful, connect the UE to the second network of the target cell;

[0010] When the redirection fails, associate a timer with the PCI of the target cell and add it to the blacklist. The timer is used to set the suppression duration of the PCI of the target cell, and the suppression duration is the residence duration of the PCI of the target cell in the blacklist.

[0011] Optionally, in the method as described above, the obtaining of the target cell that supports the second network includes:

[0012] Search for second network cells within the UE signal range;

[0013] Determine whether the signal strength of the second network cell meets a preset threshold;

[0014] If so, use the second network cell as the target cell.

[0015] In a possible design of the first aspect, before the responding to the redirection instruction from the base station, it further includes:

[0016] Obtain a redirection indication message from the base station, and the redirection indication message includes a specified frequency;

[0017] If the specified frequency does not belong to the blacklist, perform measurement according to the specified frequency and report the measurement result to the base station.

[0018] Correspondingly, if the specified frequency belongs to the blacklist, do not perform measurement on the specified frequency, and the UE continues to camp on the first network.

[0019] Optionally, the redirection instruction includes a target cell. After obtaining the redirection instruction from the base station, directly execute the redirection instruction;

[0020] When the redirection is successful, the UE is connected to the second network of the target cell. When the redirection fails, the PCI of the target cell and the specified frequency point are associated with a timer and then added to the blacklist. The timer is used to set the suppression duration of the PCI and the specified frequency point of the target cell, and the suppression duration is the residence duration of the PCI and the specified frequency point of the target cell in the blacklist.

[0021] Correspondingly, the measurement result includes the second network cells within the UE signal range in the specified frequency point and the signal strength corresponding to each second network cell, and the target cell is the second network cell whose signal strength meets the preset threshold.

[0022] Optionally, in the method as described above, the first network is a Long-Term Evolution (LTE) network, and the second network is a New Radio (NR) network.

[0023] Optionally, in the method as described above, before associating the PCI of the target cell with the timer and adding it to the blacklist, it further includes

[0024] Obtaining the location tag of the UE;

[0025] Based on the location tag, obtaining the target suppression duration from a preset suppression duration setting table, where the suppression duration setting table is used to store the mapping relationship between each location tag and the suppression duration;

[0026] Generating the timer based on the target suppression duration.

[0027] Optionally, in the method as described above, if there is no target cell that supports the second network, an alarm message is sent to the base station, and the alarm message is used to guide the base station side to configure the second network cell information.

[0028] In a second aspect, the present application provides a device for suppressing the improvement of access stability of non-RedCap cells, including:

[0029] An initialization module, configured to load the blacklist of the user equipment (UE), where the UE is currently camped on the first network, and the blacklist is used to store the frequency points and physical cell identifiers (PCI) that do not support redirection in the connection state of the first network;

[0030] A target cell acquisition module, configured to obtain a target cell that supports the second network in response to a redirection instruction from the base station;

[0031] A suppression module, configured to, when the PCI of the target cell belongs to the blacklist, not execute the redirection instruction, and the UE continues to camp on the first network;

[0032] A redirection module, configured to execute a redirection instruction when the PCI of the target cell does not belong to the blacklist, and when the redirection is successful, connect the UE to the second network of the target cell;

[0033] A blacklist update module, configured to, when the redirection fails, associate a timer with the PCI of the target cell and then add it to the blacklist, where the timer is used to set the suppression duration of the PCI of the target cell, and the suppression duration is the residence duration of the PCI of the target cell in the blacklist.

[0034] In a third aspect, the present application provides an electronic device, including a memory, a processor, and computer-executable instructions stored in the memory and executable on the processor. When the processor executes the computer-executable instructions, the method for suppressing non-RedCap cell to improve access stability according to any one of the above first aspects is implemented.

[0035] In a fourth aspect, the present application provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the method for suppressing non-RedCap cell to improve access stability according to any one of the above first aspects is implemented.

[0036] The method and device for suppressing non-RedCap cell to improve access stability provided by the present application load a blacklist of the user equipment UE in the RedCap UE, where the UE currently resides in the first network, and the blacklist is used to store the frequency points and physical cell identifiers PCI that do not support redirection in the connection state of the first network; in response to a redirection instruction from a base station, obtain a target cell that supports the second network; based on whether the target cell exists in the blacklist, decide whether to execute the redirection instruction; when the redirection is successful, connect the UE to the second network of the target cell, and when the redirection fails, associate a timer with the PCI of the target cell and then add it to the blacklist, where the timer is used to set the suppression duration of the PCI of the target cell, and the suppression duration is the residence duration of the PCI of the target cell in the blacklist. The method provided by the present application solves the compatibility problem between the terminal and the network existing in the evolution process of communication technology, avoids the access anomaly that occurs when the RedCap UE attempts to access a non-RedCap cell, that is, the ping-pong problem between the UE in the LTE cell and the non-RedCap cell, ensures the stable access of the UE, guarantees the continuity of services, avoids power consumption loss, and improves the reliability and usability of the product. Description of the Drawings

[0037] The drawings here are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application.

[0038] Figure 1 This is a schematic diagram of the application scenario for a RedCap UE to access a 5G network provided by an embodiment of this application.

[0039] Figure 2 This is a flowchart of a method for suppressing non-RedCap cells to improve access stability provided by Embodiment 1 of this application.

[0040] Figure 3 This is a flowchart of a method for suppressing non-RedCap cells to improve access stability provided by Embodiment 2 of this application.

[0041] Figure 4 This is a flowchart of a method for suppressing non-RedCap cells to improve access stability provided by Embodiment 3 of this application.

[0042] Figure 5 This is an interaction diagram of a method for suppressing non-RedCap cells to improve access stability provided by Embodiment 3 of this application.

[0043] Figure 6 This is a schematic diagram of a device for suppressing non-RedCap cells to improve access stability provided by an embodiment of this application.

[0044] Figure 7 This is a schematic diagram of the structure of an electronic device of a device for suppressing non-RedCap cells to improve access stability provided by an embodiment of this application.

[0045] Through the above-mentioned drawings, specific embodiments of this application have been shown, and there will be more detailed descriptions hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of this application in any way, but to illustrate the concept of this application to those skilled in the art by referring to specific embodiments. Detailed Description of the Embodiments

[0046] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. On the contrary, they are merely examples of devices and methods consistent with some aspects of this application as detailed in the appended claims.

[0047] To better understand the solution of the embodiments of this application, first, an application scenario related to the embodiments of this application will be introduced below.

[0048] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the application scenario for a RedCap UE to access a 5G network provided by an embodiment of this application, asFigure 1 As shown, it includes a user equipment (such as RedCap UE) 100 configured with RedCap, a base station 200 and a cell 300.

[0049] It is understandable that the 5G RedCap technology relies on the technical implementation of both the terminal (such as RedCap UE) 100 and the base station 200, that is, the RedCap feature must be configured on both sides at the same time. The RedCap feature is an enhanced feature of 5G. In the process of communication technology evolution, there will inevitably be a situation where the network does not deploy and upgrade the RedCap feature. For example, if the base station 200 fails to deploy R17 technology in the early test environment, the RedCap UE 100 will be limited by the unequal 5G capabilities and cannot access the 5G network. For these base stations 200 that fail to deploy RedCap, the determination of UE capabilities will ignore the new capabilities introduced in subsequent versions, and only verify the UE capabilities of the identifiable part of the base station 200. Therefore, when the target cell 300 during the redirection process does not support the RedCap feature, the base station 200 ignores the UE capability content newly introduced by the RedCap feature and mistakenly judges that it can serve the RedCap UE 100, thereby directly notifying the RedCap UE 100 to initiate redirection from LTE to NR. This causes the RedCapUE 100 to fail to redirect during the LTE to NR process, and may cause a ping-pong phenomenon, affecting the UE's network stability.

[0050] Since the base station 200 is the trigger during the redirection process, the RedCap UE 100 is the passive executor. It is a normal process for the RedCap UE 100 to switch to the non-RedCap cell according to the requirements of the base station 200. Although the redirection process fails, there is no abnormality in the terminal process itself. For the above-mentioned problem of unstable network injection, the existing technology considers that the technical staff of the base station 200 should identify the RedCap characteristics of the serving cell 300 in advance, that is, before notifying the RedCap UE to redirect, the base station should first identify whether the serving cell 300 has the RedCap characteristics. If it is found that the configuration capability cannot match the RedCap UE 100, do not notify the RedCap UE 100 to redirect to the non-RedCap cell 300. However, from the perspective of the implementation of the terminal product, it only relies on the instructions on the base station side, and the problem of network injection stability has not been fundamentally solved.

[0051] In view of the above technical problems, the embodiments of the present application aim to propose a method and device for suppressing non-RedCap cells to improve access stability. The inventive concept of the present application is mainly as follows: From the perspective of the terminal, a solution is found. By recording the non-RedCap cells that can be recognized by the RedCap UE into the blacklist, and suppressing these non-RedCap cells for a certain period of time in response to the redirection instruction of the base station in the subsequent process, instead of executing the redirection instruction, only attempting to redirect to the cells not in the blacklist; among them, the user configures a certain suppression duration according to requirements, and after the timeout, re-recognizes and suppresses again. Thus, the compatibility problem between the terminal and the network existing in the process of communication technology evolution is solved, the access abnormality that occurs when the RedCap UE attempts to access non-RedCap cells is avoided, the stable access of the UE is ensured, the continuity of services is guaranteed, the power consumption loss is avoided, and the reliability and usability of the product are improved.

[0052] The following uses specific embodiments to describe in detail the technical solutions of the present application and how the technical solutions of the present application solve the above technical problems. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below with reference to the drawings.

[0053] Embodiment 1:

[0054] Figure 2 It is a flowchart of the method for suppressing non-RedCap cells to improve access stability provided in Embodiment 1 of the present application.

[0055] As Figure 2 shown, the method of this embodiment includes:

[0056] S201: Load the blacklist of the user equipment UE. Among them, the UE currently camps on the first network, and the blacklist is used to store the frequency points and physical cell identifiers PCI that do not support redirection under the connection state of the first network.

[0057] The execution subject of the embodiments of the present application can be the RedCap UE or the non-RedCap cell suppression system in the RedCap UE. Among them, the non-RedCap cell suppression system can be implemented by software.

[0058] In this step, when the RedCap UE is powered on, a blacklist can be automatically initialized. This list is used to store three parameters of the PCI, frequency point, and timer of the non-RedCap cell. The three parameters in the list are in a one-to-one correspondence relationship, and the blacklist is initialized to be empty. It is also possible to initialize the blacklist when the RedCap UE starts the non-RedCap cell suppression system.

[0059] It should be noted that the user equipment UE in this application can also be replaced by terminal products such as a high-speed wireless gateway CPE, a gateway, a module, etc.

[0060] S202: In response to the redirection instruction from the base station, obtain the target cell that supports the second network.

[0061] The method provided in this embodiment can be applied to the process of blind redirection. That is to say, after the RedCap UE receives the redirection request from the base station, it directly searches for the network to obtain the target cell that supports the second network.

[0062] Since the application scenario of this embodiment is a 5G scenario, the first network described in this application can be LTE, and the second network can be NR. In other application scenarios (such as in a 6G network scenario), the first network and the second network can also be other communication networks.

[0063] S203: If the PCI of the target cell belongs to the blacklist, do not execute the redirection instruction, and the UE continues to camp on the first network.

[0064] It can be understood that if the PCI of the target cell belongs to the blacklist, it means that the target cell has been redirected by the UE and the redirection has failed. When the PCI of the target cell still exists in the blacklist, there is no need to repeatedly perform the redirection operation to avoid network instability.

[0065] S204: If the PCI of the target cell does not belong to the blacklist, execute the redirection instruction. When the redirection is successful, connect the UE to the second network of the target cell.

[0066] In this step, if the PCI of the target cell does not belong to the blacklist, there are two possibilities: First, the target cell has not been redirected by the UE; Second, the target cell has been redirected by the UE but the suppression duration has passed. That is to say, the target cell may have regained the RedCap feature due to base station upgrade and can serve the RedCap UE. For the target cell that does not belong to the blacklist, the RedCap UE executes the redirection instruction. If the redirection is successful, the RedCap UE accesses the target cell that supports the second network specified by the redirection, and completes the process of switching from the first network to the second network.

[0067] S205: When the redirection fails, associate the PCI of the target cell with a timer and add it to the blacklist. The timer is used to set the suppression duration of the PCI of the target cell, and the suppression duration is the residence duration of the PCI of the target cell in the blacklist.

[0068] In this step, for the target cell that does not belong to the blacklist, the redirection of the RedCap UE to it fails, which means that the target cell does not have the RedCap feature. Therefore, it is necessary to associate the PCI of the target cell with a timer and then add it to the blacklist.

[0069] It should be noted that the setting of the timer can ensure that if the timer in the blacklist times out, the associated PCI, frequency point and other information will be removed from the blacklist.

[0070] In this embodiment, after the suppression timer times out, the UE will remove the cell from the blacklist. It needs to go through the second redirection failure process to add the non-RedCap cell to the blacklist again. The timer scheme is adopted in this application instead of permanent suppression, considering the mobility of the terminal and the possibility of the base station upgrading the RedCap feature at any time.

[0071] The method for suppressing non-RedCap cells to improve access stability provided in this embodiment loads the blacklist of the user equipment (UE) in the RedCap UE, where the UE currently resides in the first network; in response to the redirection instruction of the base station, obtains the target cell that supports the second network; based on whether the target cell exists in the blacklist, decides whether to execute the redirection instruction; when the redirection is successful, the UE accesses the second network of the target cell, and when the redirection fails, the PCI of the target cell is associated with a timer and then added to the blacklist. The timer is used to set the suppression duration of the PCI of the target cell, and the suppression duration is the residence duration of the PCI of the target cell in the blacklist. It solves the compatibility problem between the terminal and the network in the process of communication technology evolution, that is, the ping-pong problem between the UE in the LTE cell and the non-RedCap cell, ensures the stable access of the UE, guarantees the continuity of services, avoids power consumption loss, and improves the reliability and availability of the product.

[0072] The technical solution of the above method for suppressing non-RedCap cells to improve access stability will be introduced in detail below.

[0073] In a possible implementation manner, the method for suppressing non-RedCap cells to improve access stability provided in this embodiment obtains the target cell that supports the second network by screening the signal strength of the second network cells obtained by network search.

[0074] Specifically, obtaining the target cell that supports the second network includes: searching for the second network cells within the UE signal range; determining whether the signal strength of the second network cell meets a preset threshold; if so, taking the second network cell as the target cell.

[0075] It is understandable that the UE can perform a full - band search according to its own capabilities and settings, and attempt to read the information of cells (in this embodiment, the second - network cells) on each frequency point. Of course, if the UE stores relevant information in the USIM or the mobile phone, it can also use this information to quickly search for cells without performing a full - band search.

[0076] For the second - network cells that can be searched, in order to ensure the stability of the connection, it is also necessary to screen their signal strengths, and use the second - network cells whose signal strengths meet the preset threshold as target cells.

[0077] Embodiment 2:

[0078] Figure 3 It is a flowchart of the method for suppressing non - RedCap cells to improve access stability provided in Embodiment 2 of this application. Comparing Figure 2 and Figure 3 , it can be seen that the first step and the last four steps of Embodiment 1 and Embodiment 2 are the same. The difference between Embodiment 2 and Embodiment 1 is that this embodiment is applicable to the measurement - based redirection process. Therefore, before responding to the redirection instruction from the base station, the Radio Resource Control (RRC) layer of the UE will receive a redirection indication message from the base station. As Figure 3 shown, the method of this embodiment includes:

[0079] S301: Load the black - list of the user equipment UE, where the UE is currently camped on the first network, and the black - list is used to store the frequency points and physical cell identifiers (PCI) that are not supported for redirection in the connection state of the first network;

[0080] S302: Obtain the redirection indication message from the base station, and the redirection indication message includes a specified frequency point;

[0081] S303: Determine whether the specified frequency point belongs to the black - list;

[0082] S304: If the specified frequency point does not belong to the black - list, perform measurements according to the specified frequency point and report the measurement results to the base station;

[0083] S305: In response to the redirection instruction from the base station, obtain the target cell that supports the second network;

[0084] S306: If the PCI of the target cell belongs to the black - list, do not execute the redirection instruction, and the UE continues to camp on the first network;

[0085] S307: If the PCI of the target cell does not belong to the blacklist, execute the redirection instruction. When the redirection is successful, connect the UE to the second network of the target cell.

[0086] S308: When the redirection fails, associate the PCI of the target cell with a timer and add it to the blacklist. The timer is used to set the suppression duration of the PCI of the target cell, and the suppression duration is the residence duration of the PCI of the target cell in the blacklist.

[0087] It can be understood that when the UE is in an environment that does not support RedCap, the UE's attempt to access NR will fail because the cells in the environment do not support RedCap capabilities. According to the network search logic, the UE will then access the LTE network. After the UE registers with the LTE network, the UE will measure and report the NR cells and cell configuration information existing in the environment according to the measurement event.

[0088] Therefore, in this embodiment, if the UE receives a redirection indication message from the base station, it is necessary to determine whether the frequency point specified in the redirection request belongs to the blacklist. If the specified frequency point is in the blacklist, no measurement will be performed; otherwise, measurement reporting will be performed. And the base station determines the target cell based on the UE's measurement report and judges whether the NR cell signal strength meets the redirection threshold, and then issues a redirection instruction.

[0089] For the processing of the redirection instruction, this embodiment and Embodiment 1 also judge whether the PCI of the target cell belongs to the blacklist to determine whether to execute the redirection instruction.

[0090] Embodiment 3:

[0091] Figure 4 This is a flowchart of the method for suppressing non-RedCap cells to improve access stability provided in Embodiment 3 of this application. On the basis of Embodiment 2, this embodiment changes the way of implementing the redirection instruction. As Figure 4 shown, the method provided in this embodiment includes:

[0092] S401: Load the blacklist of the user equipment UE. Among them, the UE is currently camped on the first network, and the blacklist is used to store the frequency points and physical cell identifiers PCI that do not support redirection in the connection state of the first network.

[0093] S402: Obtain the redirection indication message from the base station, and the redirection indication message includes the specified frequency point.

[0094] S403: Determine whether the specified frequency point belongs to the blacklist.

[0095] S404: If the specified frequency point belongs to the blacklist, do not measure the specified frequency point, and the UE continues to camp on the first network;

[0096] S405: If the specified frequency point does not belong to the blacklist, measure according to the specified frequency point and report the measurement result to the base station;

[0097] S406: Obtain the redirection instruction of the base station and execute the redirection instruction, where the redirection instruction includes the target cell;

[0098] S407: When the redirection is successful, connect the UE to the second network of the target cell;

[0099] S408: When the redirection fails, associate the PCI of the target cell and the specified frequency point with a timer and add them to the blacklist. The timer is used to set the suppression duration of the PCI of the target cell and the specified frequency point. The suppression duration is the residence duration of the PCI of the target cell and the specified frequency point in the blacklist.

[0100] Comparison Figure 4 and Figure 3 shows that compared with Embodiment 2, there are mainly two improvements in Embodiment 3: First, it is clear that when the specified frequency point belongs to the blacklist, the specified frequency point is not measured; Second, after obtaining the redirection instruction of the base station, directly execute the redirection instruction without further judging whether the PCI of the target cell belongs to the blacklist.

[0101] Regarding the above improvements, it can be understood that when a non-RedCap cell belongs to the blacklist, even if the RRC layer of the UE receives the redirection indication message from the base station, it will not perform measurement and report the measurement result. Since the base station does not receive the measurement result of the NR cell, it will not notify the UE to perform redirection. That is to say, during the measurement process, the UE can directly exclude non-RedCap cells according to the records in the blacklist, which further streamlines the steps compared with Embodiment 2. And after the redirection fails, both the PCI and frequency point of the non-RedCap cell are added to the blacklist.

[0102] Based on this embodiment, in order to further illustrate the solution to the compatibility problem between the UE, the base station, and the cell for the terminal and the network, the implementation process of Embodiment 3 is described in combination with Figure 5 as follows. Figure 5 FIG. is an interaction diagram of the method for suppressing non-RedCap cells to improve access stability provided in Embodiment 3 of the present application, as Figure 5 shown:

[0103] After the UE powers on, a blacklist of the user equipment UE is loaded, where the UE is currently camped on the first network;

[0104] The base station sends a redirection indication message to the UE, and the redirection indication message includes a specified frequency band;

[0105] The UE determines whether the specified frequency band belongs to the blacklist;

[0106] If the specified frequency band belongs to the blacklist, the UE does not measure the specified frequency band, and the UE continues to camp on the first network;

[0107] If the specified frequency band does not belong to the blacklist, the UE measures according to the specified frequency band, and reports the measurement result, that is, the target cell supporting the second network and the cell configuration information existing in the environment, to the base station;

[0108] The base station issues a redirection command according to the measurement result;

[0109] The UE initiates a redirection to the target cell according to the redirection command;

[0110] When the redirection is successful, the UE accesses the second network of the target cell;

[0111] When the redirection fails, the UE adds the PCI of the target cell and the specified frequency band associated timer to the blacklist.

[0112] Embodiment 4:

[0113] Based on Embodiments 1 to 3, before adding the PCI associated timer of the target cell to the blacklist, it further includes: obtaining the location tag of the UE; based on the location tag, obtaining a target suppression duration from a preset suppression duration setting table, where the suppression duration setting table is used to store the mapping relationship between each location tag and the suppression duration; generating the timer based on the target suppression duration.

[0114] In this embodiment, a suppression duration setting table is used to obtain the target suppression duration according to the location tag of the UE. It can be understood that considering the mobility of the terminal and the possibility of the base station upgrading the RedCap feature at any time, a permanent suppression scheme is not adopted in this application. Therefore, the implementation of the method provided in this application should fully consider the usage scenario of the product to determine a relatively appropriate suppression timer duration. For example, if the terminal is used in a fixed location and there is no base station upgrade plan in the short term, the suppression duration can be in hours.

[0115] In this embodiment, the default configuration of the timer for the UE can be a suppression duration of 5 minutes, that is, within 5 minutes, the UE will not initiate a redirection from LTE to a non-RedCap cell. After the 5-minute timer expires, a redirection is initiated again. Depending on whether the redirection fails, the non-RedCap cell is considered to be added to the blacklist again.

[0116] It should be noted that the method provided in this application for suppressing non-RedCap cells to improve access stability depends on the technical implementation of the chip-side communication protocol stack. Therefore, an interface needs to be provided to the upper-layer application to facilitate dynamic and flexible configuration of the suppression timer duration on the product side.

[0117] Embodiment Five:

[0118] Based on Embodiments One to Three, if there is no target cell that supports the second network, an alarm message is sent to the base station, and the alarm message is used to guide the base station side to configure the second network cell information.

[0119] It can be understood that for the handover type in the interaction operation, since the base station side needs to configure the NR neighbor cell in advance, if this step is found to be abnormal, it is necessary to communicate with the base station maintenance personnel to adjust the NR cell configuration information. Therefore, when the UE cannot search for a target cell that supports the second network during the network search process, it can feedback to the base station side.

[0120] It should be noted that for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that this application is not limited by the described action sequence, because according to this application, certain steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily essential to this application.

[0121] Furthermore, it should be noted that although the steps in the flowchart are displayed in sequence according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless there is a clear description in this article, the execution of these steps has no strict order limit, and these steps can be executed in other orders. Moreover, at least some of the steps in the flowchart may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed alternately or in turn with at least a part of other steps or sub-steps or stages of other steps.

[0122] Embodiment Six:

[0123] Figure 6 This is a schematic diagram of a device for suppressing non-RedCap cell access stability improvement provided by an embodiment of this application. As Figure 6 shown, the device for suppressing non-RedCap cell access stability improvement includes:

[0124] An initialization module 61, configured to load a blacklist of a user equipment (UE), where the UE is currently camped on a first network, and the blacklist is used to store frequency points and physical cell identifiers (PCIs) that do not support redirection in the connection state of the first network;

[0125] A target cell acquisition module 62, configured to acquire a target cell that supports a second network in response to a redirection instruction from a base station;

[0126] A suppression module 63, configured to, when the PCI of the target cell belongs to the blacklist, not execute the redirection instruction, and the UE continues to camp on the first network;

[0127] A redirection module 64, configured to, when the PCI of the target cell does not belong to the blacklist, execute the redirection instruction, and when the redirection is successful, connect the UE to the second network of the target cell;

[0128] A blacklist update module 65, configured to, when the redirection fails, associate a timer with the PCI of the target cell and add it to the blacklist, where the timer is used to set the suppression duration of the PCI of the target cell, and the suppression duration is the residence duration of the PCI of the target cell in the blacklist.

[0129] In a possible design, the target cell acquisition module 62 is specifically configured to:

[0130] Search for second network cells within the UE signal range;

[0131] Determine whether the signal strength of the second network cell meets a preset threshold;

[0132] If so, use the second network cell as the target cell.

[0133] In a possible design, the device for suppressing non-RedCap cell access stability improvement further includes a frequency point measurement module, and the frequency point measurement module is configured to:

[0134] Acquire a redirection indication message from the base station, where the redirection indication message includes a specified frequency point;

[0135] If the specified frequency point does not belong to the blacklist, perform measurement according to the specified frequency point and report the measurement result to the base station.

[0136] It should be understood that the above device embodiments are merely illustrative, and the devices of the present application can also be implemented in other ways. For example, the division of units / modules in the above embodiments is only a logical function division, and there can be other division methods in actual implementation. For example, multiple units, modules or components can be combined, or can be integrated into another system, or some features can be ignored or not executed.

[0137] In addition, unless otherwise specified, in each embodiment of the present application, each functional unit / module can be integrated in one unit / module, or each unit / module can exist physically alone, or two or more units / modules can be integrated together. The above integrated unit / module can be implemented in the form of hardware or in the form of a software program module.

[0138] Figure 7 It is a schematic structural diagram of an electronic device of the device for suppressing the improvement of access stability in non-RedCap cells provided by an embodiment of the present application. As Figure 7 shown, the electronic device of this embodiment includes: at least one processor 70 ( Figure 7 only one is shown in the figure), a processor, a memory 71, and a computer program stored in the memory 71 and executable on at least one processor 70. When the processor 70 executes the computer program, the steps in any of the above method embodiments are implemented.

[0139] The electronic device may include, but is not limited to, a processor 70 and a memory 71. Those skilled in the art can understand that Figure 7 this is only an example of an electronic device, and does not constitute a limitation on the electronic device. It may include more or fewer components than shown in the figure, or combine some components, or different components. For example, it may also include input / output devices, network access devices, etc.

[0140] The so-called processor 70 may be a central processing unit (CPU), and this processor 70 may also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), off-the-shelf programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or this processor may also be any conventional processor, etc.

[0141] For the specific implementation process of the processor 701, reference can be made to the foregoing method embodiments. Their implementation principles and technical effects are similar, and will not be elaborated here in this embodiment.

[0142] In some embodiments, the memory 71 may be an internal storage unit of the electronic device, such as the memory of the electronic device. In other embodiments, the memory 71 may also be an external storage device of the electronic device, such as a plug-in hard disk equipped on the electronic device, a Smart Media Card (SMC), a Secure Digital (SD) card, a Flash Card, etc. Further, the memory 71 may also include both the internal storage unit and the external storage device of the electronic device. The memory 71 is used to store an operating system, application programs, a BootLoader, data, and other programs, such as the program code of a computer program. The memory 71 may also be used to temporarily store data that has been output or is to be output.

[0143] The embodiment of the present application also provides a computer-readable storage medium. The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps in the foregoing method embodiments can be implemented.

[0144] The foregoing computer-readable storage medium may be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as a Static Random Access Memory (SRAM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), an Erasable Programmable Read-Only Memory (EPROM), a Programmable Read-Only Memory (PROM), a Read-Only Memory (ROM), a magnetic memory, a flash memory, a magnetic disk, or an optical disk. The readable storage medium may be any available medium accessible by a general-purpose or special-purpose computer.

[0145] An exemplary readable storage medium is coupled to the processor, so that the processor can read information from the readable storage medium and write information to the readable storage medium. Of course, the readable storage medium may also be a component of the processor. The processor and the readable storage medium may be located in an Application Specific Integrated Circuit (ASIC). Of course, the processor and the readable storage medium may also exist as discrete components in the foregoing electronic device.

[0146] Those of ordinary skill in the art will understand that all or part of the steps of implementing the above method embodiments can be completed by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it performs the steps of the above method embodiments; and the aforementioned storage medium includes: various media such as ROM, RAM, magnetic disks, or optical discs that can store program codes.

[0147] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments. The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as falling within the scope described in this specification.

[0148] After considering the specification and practicing the invention disclosed herein, those skilled in the art will readily conceive of other embodiments of the present application. The present application is intended to cover any variations, uses, or adaptations of the present application, which follow the general principles of the present application and include well-known knowledge or conventional technical means in the technical field not disclosed in the present application. The specification and embodiments are only regarded as exemplary, and the true scope and spirit of the present application are pointed out by the following claims.

[0149] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present application is only limited by the appended claims.

Claims

1. A method for suppressing the improvement of access stability in non-RedCap cells, characterized in that Including: Loading a blacklist of user equipment (UE), where the UE currently camps on a first network, and the blacklist is used to store frequencies and physical cell identifiers (PCI) of redirections not supported in the connection state of the first network; In response to a redirection instruction from a base station, obtaining a target cell that supports a second network; If the PCI of the target cell belongs to the blacklist, the redirection instruction is not executed, and the UE continues to camp on the first network; If the PCI of the target cell does not belong to the blacklist, the redirection instruction is executed. When the redirection is successful, the UE is connected to the second network of the target cell; When the redirection fails, the PCI of the target cell is associated with a timer and then added to the blacklist. The timer is used to set the suppression duration of the PCI of the target cell, and the suppression duration is the residence duration of the PCI of the target cell in the blacklist.

2. The method according to claim 1, wherein The obtaining of the target cell that supports the second network includes: Searching for second network cells within the UE signal range; Judging whether the signal strength of the second network cell meets a preset threshold; If so, taking the second network cell as the target cell.

3. The method according to claim 1, wherein Before the response to the redirection instruction from the base station, it further includes: Obtaining a redirection indication message from the base station, where the redirection indication message includes a specified frequency; If the specified frequency does not belong to the blacklist, measurements are performed according to the specified frequency, and the measurement results are reported to the base station.

4. The method according to claim 3, characterized in that, If the specified frequency belongs to the blacklist, no measurement is performed on the specified frequency, and the UE continues to camp on the first network.

5. The method according to claim 3, characterized in that, The redirection instruction includes a target cell. After obtaining the redirection instruction from the base station, the redirection instruction is directly executed; When the redirection is successful, the UE is connected to the second network of the target cell. When the redirection fails, the PCI of the target cell and the specified frequency are associated with a timer and then added to the blacklist. The timer is used to set the suppression duration of the PCI of the target cell and the specified frequency, and the suppression duration is the residence duration of the PCI of the target cell and the specified frequency in the blacklist.

6. The method according to claim 5, wherein The measurement results include second network cells within the UE signal range in the specified frequency and the corresponding signal strengths of each second network cell, and the target cell is a second network cell whose signal strength meets the preset threshold.

7. The method according to claim 1 or 3, characterized in that, The first network is a Long-Term Evolution (LTE) network, and the second network is a New Radio (NR) network.

8. The method according to claim 1 or 3, characterized in that Before the PCI of the target cell is associated with a timer and then added to the blacklist, it further includes Obtaining the location tag of the UE; Based on the location tag, obtaining a target suppression duration from a preset suppression duration setting table, where the suppression duration setting table is used to store the mapping relationship between each location tag and the suppression duration; Generating the timer based on the target suppression duration.

9. The method according to claim 1 or 3, characterized in that, If there is no target cell that supports the second network obtained, an alarm message is sent to the base station, and the alarm message is used to guide the base station side to configure the second network cell information.

10. A device for suppressing the improvement of access stability in non-RedCap cells, characterized in that, Including: An initialization module, configured to load a blacklist of a user equipment (UE), where the UE is currently camped on a first network, and the blacklist is used to store frequency points and physical cell identifiers (PCIs) of redirections that are not supported in the connection state of the first network; A target cell acquisition module, configured to acquire a target cell that supports a second network in response to a redirection instruction from a base station; A suppression module, configured to not execute the redirection instruction when the PCI of the target cell belongs to the blacklist, and the UE continues to camp on the first network; A redirection module, configured to execute the redirection instruction when the PCI of the target cell does not belong to the blacklist, and when the redirection is successful, connect the UE to the second network of the target cell; A blacklist update module, configured to, when the redirection fails, associate a timer with the PCI of the target cell and add it to the blacklist, where the timer is used to set an inhibition duration of the PCI of the target cell, and the inhibition duration is the residence duration of the PCI of the target cell in the blacklist; 11. An electronic device, characterized in that, Comprising: A processor, and a memory communicatively connected to the processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory to implement the method according to any one of claims 1 to 9; 12. A computer-readable storage medium, characterized in that, Computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, they are used to implement the method according to any one of claims 1 to 9.

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