Cell switching control method, device, equipment, and storage medium

Abstract

The present application provides a cell switching control method and apparatus, device, and storage medium; wherein the method is applied to a terminal, and the method includes: when the terminal resides in a first cell, at least when a measurement result of the first cell meets a blind switching condition or a blind redirection condition, detecting a transmission parameter between the terminal and the first cell; and determining whether to keep the terminal in the first cell based on the transmission parameter.

Description

Technical Field

[0001] The present application relates to communication technology, and is related to but not limited to a cell switching control method and apparatus, equipment, and storage medium. Background Art

[0002] When the terminal switches or redirects, it reports the detected neighboring cell information through measurement reports. The base station selects the best cell as the target cell based on the measurement reports and the configuration of the neighboring cells to ensure the user's service experience.

[0003] However, not all terminals support all types of measurements. Even if a terminal supports various measurements, it may take some time for the terminal to perform measurements due to different terminal receiver performance and complex network air interface environments. This may result in a high probability that the terminal cannot detect a cell that meets the measurement reporting requirements, thereby failing to trigger cell switching.

[0004] To ensure continuous user service, users in a cell can be migrated to other cells through blind handover or blind redirection. Blind handover and blind redirection mean that the base station does not select a target cell based on measurement reports, but instead directly instructs the terminal to blindly handover or blindly redirect to a target cell.

[0005] However, this blind handover and blind redirection method lacks a basis for selecting a target cell, so there is a high probability that the selected target cell is inappropriate, causing the blind handover or blind redirection process to fail, resulting in terminal network lag or call drops. Summary of the Invention

[0006] In view of this, the cell switching control method, device, equipment, and storage medium provided in this application can reduce the situation where terminal calls are dropped or Internet access is significantly interrupted due to blind switching or blind redirection.

[0007] According to one aspect of an embodiment of the present application, a cell handover control method is provided, applied to a terminal, the method comprising: when the terminal is camped in a first cell, at least when a measurement result of the first cell meets a blind handover condition or a blind redirection condition, detecting a transmission parameter between the terminal and the first cell; and determining, based on the transmission parameter, whether to keep the terminal camped in the first cell;

[0008] In this way, at least when the measurement result of the first cell meets the blind switching condition or the blind redirection condition, the chance of the terminal continuing to stay in the first cell is increased. Compared with the solution of directly triggering cell switching when the measurement result of the first cell meets the blind switching condition or the blind redirection condition, the terminal can reduce the long connection interruption delay caused by blind switching or blind redirection to the second cell designated by the base station due to failure to meet the access conditions and then returning to the first cell, thereby reducing the situation where the terminal calls are dropped or the Internet access has obvious lag due to excessive connection interruption delay.

[0009] In some embodiments, the method further includes: when the terminal is camped in the first cell, at least when the measurement result of the first cell meets the blind switching condition or the blind redirection condition, turning off the cell switching function of the terminal to prohibit the terminal from switching or redirecting to the second cell; accordingly, determining whether to keep the terminal camped in the first cell according to the transmission parameter includes: determining whether to keep the cell switching function in a turned-off state according to the transmission parameter;

[0010] In this way, at least when the measurement result of the first cell meets the blind switching condition or the blind redirection condition, the cell switching function is turned off, thereby preventing the terminal from returning to the first cell due to failure to meet the access conditions when blindly switching or blindly redirecting to the second cell designated by the base station, resulting in a long connection interruption delay.

[0011] In some embodiments, determining whether to keep the cell switching function in a disabled state based on the transmission parameter includes: if the transmission parameter satisfies a transmission condition, keeping the cell switching function in a disabled state so that the terminal remains stationed in the first cell; if the transmission parameter does not satisfy the transmission condition, enabling the cell switching function so that the terminal switches or redirects to the second cell;

[0012] In this way, when the transmission parameters do not meet the transmission conditions, the cell switching function is turned on so that the terminal can switch or redirect to the second cell; thereby solving the problem of high packet loss rate caused by the poor transmission environment between the terminal and the first cell but the terminal is still locked in the first cell, thereby reducing the situation of terminal Internet access lag or call drops.

[0013] In some embodiments, the first cell belongs to a first network, the second cell belongs to a second network, and the first network and the second network are networks of different communication standards; in this way, the problem of long connection interruption delay caused by blind switching in the inter-system switching scenario is solved, thereby improving the user's Internet experience and call experience.

[0014] Furthermore, in some embodiments, the data transmission rate of the first network is higher than the data transmission rate of the second network; in this way, it is possible to solve the problem that the terminal could have continued to work on the first network to enjoy a high data transmission rate, but the base station side forced the terminal to blindly switch or blindly redirect to the second network, thereby ensuring the terminal user's maximum experience on the first network.

[0015] In some embodiments, at least when the measurement result of the first cell meets the blind switching condition or the blind redirection condition, includes: switching or redirecting to the second cell when the measurement result of the first cell meets the blind switching condition or the blind redirection condition; and the case where the terminal fails to access the second cell and re-switches to the first cell.

[0016] It can be understood that when a terminal undergoes blind switching or blind redirection to a second cell, fails to access the second cell and returns to the first cell again, the base station will continue to trigger blind switching or blind redirection according to the usual base station judgment mechanism, causing the terminal to frequently experience Internet access jams or dropped calls; in an embodiment of the present application, the solution breaks this mechanism. When a terminal undergoes blind switching or blind redirection to a second cell and fails to access and returns to the first cell again, the cell switching function of the terminal is turned off, and the terminal detects the transmission parameters between the terminal and the first cell. When the transmission parameters meet the transmission conditions, the terminal still remains in the first cell, thereby reducing Internet access jams or dropped calls caused by switching.

[0017] In some embodiments, the detecting the transmission parameters between the terminal and the first cell includes: sending at least one first message to the first cell; and determining the transmission parameters according to a second message returned by the first cell based on the at least one first message; wherein the transmission parameters include a first parameter and / or a second parameter, the first parameter representing a reception quality of the second message, and the second parameter representing a transmission rate of the first message and / or the second message;

[0018] In this way, it is equivalent to determining the transmission parameters based on the actual interaction between the terminal and the first cell; compared with determining the quality of the transmission environment based on the measurement results of the first cell, the transmission parameters obtained by the former can more accurately reflect the actual receiving capability of the terminal and more accurately reflect the quality of the transmission environment between the terminal and the first cell; thereby, the terminal can make more accurate decisions to determine whether to continue to keep the cell switching function closed; furthermore, on the one hand, it reduces the situation of switching failure caused by cell switching because the actual transmission environment meets the transmission conditions but the transmission parameters do not meet the transmission conditions; on the other hand, it reduces the situation of Internet access freezes or call drops caused by cell switching not being performed because the actual transmission environment does not meet the transmission conditions but the transmission parameters meet the transmission conditions.

[0019] According to one aspect of an embodiment of the present application, a cell switching control device is provided, which is applied to a terminal, and the device includes a detection module and a determination module; wherein the detection module is configured to, when the terminal resides in a first cell, detect the transmission parameters between the terminal and the first cell when at least the measurement result of the first cell meets a blind switching condition or a blind redirection condition; the determination module is configured to determine whether to keep the terminal residing in the first cell based on the transmission parameters.

[0020] According to one aspect of an embodiment of the present application, a terminal is provided, including a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and when the processor executes the program, the method described in the embodiment of the present application is implemented.

[0021] According to one aspect of an embodiment of the present application, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the method provided in the embodiment of the present application is implemented.

[0022] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings herein are incorporated into and constitute a part of this specification. These drawings illustrate embodiments consistent with the present application and, together with the specification, serve to illustrate the technical solutions of the present application. Obviously, the drawings described below are merely some embodiments of the present application. Those skilled in the art can, without inventive effort, derive other drawings from these drawings.

[0024] The flowcharts shown in the accompanying drawings are for illustrative purposes only and do not necessarily include all contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps may be decomposed, while others may be combined or partially combined. Therefore, the actual execution order may vary depending on the actual situation.

[0025] Figure 1 A schematic diagram of a network architecture that may be applicable to embodiments of the present application;

[0026] Figure 2 A schematic diagram of the implementation flow of the cell handover control method provided in an embodiment of the present application;

[0027] Figure 3 A comparative diagram of the timing for shutting down the cell switching function provided in an embodiment of the present application;

[0028] Figure 4 A schematic diagram of an implementation flow of another cell handover control method provided in an embodiment of the present application;

[0029] Figure 5 A schematic diagram of the structure of a cell switching control device provided in an embodiment of the present application;

[0030] Figure 6 A schematic diagram of the structure of a terminal provided in an embodiment of the present application. DETAILED DESCRIPTION

[0031] To make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the specific technical solutions of the present application will be further described in detail below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application but are not intended to limit the scope of the present application.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used herein are for the purpose of describing the embodiments of this application only and are not intended to limit this application.

[0033] In the following description, references to “some embodiments,” “this embodiment,” “embodiments of the present application,” and examples, etc., describe a subset of all possible embodiments. However, it can be understood that “some embodiments” may be the same subset or different subsets of all possible embodiments, and may be combined with each other without conflict.

[0034] The network architecture and service scenarios described in the embodiments of this application are intended to more clearly illustrate the technical solutions of the embodiments of this application and do not constitute a limitation on the technical solutions provided by the embodiments of this application. Persons skilled in the art will appreciate that, with the evolution of network architecture and the emergence of new service scenarios, the technical solutions provided in the embodiments of this application are equally applicable to similar technical problems.

[0035] Figure 1 A network architecture that may be applicable to the embodiment of the present application is shown. Figure 1 As shown, the network architecture provided by this embodiment includes: a network device 101 and a terminal 102. The terminals involved in the embodiments of the present application may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem, as well as various forms of user terminal devices (terminal devices) or mobile stations (MobileStation, MS), etc. The network device involved in the embodiments of the present application is a device deployed in a wireless access network to provide wireless communication functions for terminals. In the embodiments of the present application, the network device can be, for example, Figure 1The base station shown may include various forms of macro base stations, micro base stations, relay stations or access points, etc.

[0036] The cell switching control method provided in the embodiment of the present application can be applied to the terminal 102, which supports the fourth generation mobile communication system (the 4th generation mobile communication system, 4G), the fifth generation mobile communication technology (5th-Generation wireless communication technology, 5G) new radio (New Radio, NR) system and / or future communication system terminals, and can also be terminals of various other wireless communication systems.

[0037] Blind redirection: refers to not measuring the target cell. When the signal quality of the target cell is unknown, the network directly instructs the terminal to try to reside in the specified system / frequency after leaving the connected state through the redirectedCarrierInfo in the RRC Connection Release message.

[0038] Blind handover: Similar to blind redirection, the base station does not instruct the terminal to measure the signal quality of candidate cells. Instead, it directly generates a list of target cells or target frequencies based on relevant priority parameters and sends it to the terminal. The terminal then attempts to switch directly to the specified target cell.

[0039] Currently, NR / LTE network switching is determined by the base station based on the Reference Signal Receiving Power (RSRP) reported by the terminal. The main determination thresholds are shown in Table 1 below:

[0040] Table 1

[0041] Parameter Chinese name Recommended value Inter-system handover E-UTRAN measurement parameter group identifier 0 Measurement parameter group identifier for switching between different systems 0 A1 RSRP threshold for switching between different systems -100dBm A2 RSRP threshold for switching between different systems -105dBm Coverage-based handover to E-UTRAN blind A2 RSPR threshold -110dBm

[0042] As shown in Table 1, when the RSRP reported by the terminal to the base station is lower than -110dBm (for example, the RSRP reported by the terminal to the base station is -112dBm), the blind switching mechanism will be triggered, and the terminal will blindly switch from NR to LTE. It should be noted that the recommended values in Table 1 are only reference values, and the threshold values of base stations in different operators and regions are different.

[0043] The blind handover mechanism mentioned in the above scenario can be blind redirection or blind switching. Of course, the blind redirection or blind switching method mentioned in the following embodiment is not only applicable to the blind redirection or blind switching between NR and LTE, but also to other inter-system handovers. In short, it is applicable to all scenarios where the blind handover mechanism is triggered when the RSRP or other measurement parameters of the serving cell are lower than a specific threshold.

[0044] An embodiment of the present application provides a cell switching control method, including: when a terminal resides in a first cell, at least when a measurement result of the first cell meets a blind switching condition or a blind redirection condition, the terminal detects a transmission parameter between the terminal and the first cell; and the terminal determines whether to remain in the first cell based on the transmission parameter.

[0045] It can be understood that the terminal determines whether to remain in the first cell based on the transmission parameters, including: when the transmission parameters meet the transmission conditions, the terminal does not perform cell switching and still remains in the first cell; in this way, on the one hand, it prevents the terminal from being delayed in connection interruption due to the need to release the RRC connection first when performing blind switching or blind redirection; on the other hand, it reduces the longer connection interruption delay caused by the terminal blindly switching or blindly redirecting to the second cell designated by the base station and returning to the first cell due to failure to meet the access conditions, thereby reducing the occurrence of terminal call drops or obvious Internet access freezes due to the long connection interruption delay.

[0046] When the transmission parameters do not meet the transmission conditions, the terminal performs cell switching and no longer remains in the first cell. In this way, on the one hand, since the condition for the terminal to perform cell switching in a weak network environment is: at least when the measurement result of the first cell meets the blind switching condition or the blind redirection condition, and when the transmission parameters do not meet the transmission conditions, rather than performing cell switching only when the measurement result of the first cell meets the blind switching condition or the blind redirection condition, the number of cell switching operations is reduced, thereby saving terminal power consumption. On the other hand, when the transmission parameters do not meet the transmission conditions, the terminal performs cell switching, thereby solving the problem of Internet access lag or call drops caused by the poor transmission environment between the terminal and the first cell but the terminal is still locked in the first cell.

[0047] The present application further provides a cell handover control method. Figure 2 A schematic diagram of the implementation flow of the cell switching control method provided in the embodiment of the present application is shown in FIG. Figure 2 As shown, the method may include the following steps 201 to 205:

[0048] In step 201, when the terminal resides in the first cell, the terminal turns off the cell switching function to prohibit switching or redirecting to the second cell when at least the measurement result of the first cell meets the blind switching condition or the blind redirection condition, thereby still remaining in the first cell; then, step 202 is executed.

[0049] The terminal disables the cell handover function at least when the measurement result of the first cell satisfies the blind handover condition or the blind redirection condition. That is, the terminal disables the cell handover function at least when the measurement result of the first cell satisfies the blind handover condition or the blind redirection condition. For example, in one embodiment, the terminal disables the cell handover function when it determines that the measurement result of the first cell satisfies the blind handover condition or the blind redirection condition. In this way, on the one hand, it can prevent the terminal from blindly handing over or blindly redirecting to the second cell designated by the base station due to not meeting the access conditions and then returning to the first cell, resulting in a long connection interruption delay, thereby reducing the situation where the terminal causes call drops or significant Internet access lag due to the long connection interruption delay. On the other hand, even if the terminal satisfies the access conditions when blindly handing over or blindly redirecting to the second cell, there is still a certain connection interruption delay. Therefore, disabling the terminal's cell handover function when the measurement result of the first cell satisfies the blind handover condition or the blind redirection condition can lock the terminal to the first cell, thereby avoiding the terminal from releasing the RRC connection, thereby reducing the situation where the terminal is disconnected from the network.

[0050] For example, in another embodiment, the timing for the terminal to turn off the cell switching function is: when the measurement result of the first cell meets the blind switching condition or the blind redirection condition, the terminal switches or redirects to the second cell, but fails to access the second cell and re-resides in the first cell; in this way, the terminal can be prevented from blindly switching or blindly redirecting to the second cell designated by the base station in the subsequent process, resulting in a long connection interruption delay caused by returning to the first cell due to failure to meet the access conditions, thereby reducing the situation where the terminal calls are dropped or the Internet is obviously blocked due to excessive connection interruption delay.

[0051] like Figure 3 As shown, the difference between the two embodiments is that: in the former embodiment, the timing when the terminal turns off the cell switching function is: the measurement result of the first cell meets the blind switching condition or the blind redirection condition, that is, before the terminal performs blind switching or blind redirection to the second cell; in the latter embodiment, the timing when the terminal turns off the cell switching function is: when the measurement result of the first cell meets the blind switching condition or the blind redirection condition, the terminal fails to switch or redirect to the second cell and switches back to the first cell, that is, when or after the terminal fails to blindly switch or blindly redirect to the second cell and returns to the first cell again.

[0052] In some embodiments, upon receiving a blind redirection instruction sent by the base station, the terminal determines that the measurement result of the first cell meets the blind handover condition or the blind redirection condition. The blind redirection instruction can be carried in an RRCConnectionRelease message or in other messages.

[0053] In other embodiments, the terminal may also autonomously determine whether the measurement result (such as RSRP) of the first cell meets the blind handover condition or the blind redirection condition according to a known blind handover threshold or blind redirection threshold.

[0054] In an embodiment of the present application, the terminal first turns off the cell switching function, and then executes step 202 to detect the transmission environment; in this way, it can prevent the terminal from switching or redirecting to the second cell and being unable to switch back to the first cell due to the failure to turn off the cell switching function in advance when detecting the transmission environment.

[0055] Step 202: The terminal detects transmission parameters between the terminal and the first cell;

[0056] In step 203, the terminal determines whether the transmission parameters meet the transmission conditions; if not, execute steps 204 and 205; if so, keep the cell switching function in a closed state to prevent switching or redirection to the second cell.

[0057] That is, the terminal determines whether to keep the cell switching function in the disabled state according to whether the transmission parameters meet the transmission conditions.

[0058] Understandably, the terminal needs to release the RRC connection before blind handover or blind redirection to the second cell designated by the base station. Therefore, blind handover or blind redirection will cause a certain connection interruption delay. If the terminal blindly switches to the second cell designated by the base station but does not meet the access conditions (such as not meeting the S access criteria) and then returns to the first cell, it will result in a longer connection interruption delay.

[0059] In view of this, in an embodiment of the present application, the terminal residing in the first cell at least determines that the measurement result of the first cell meets the blind switching condition or the blind redirection condition, and then turns off the cell switching function to prohibit switching or redirection to the second cell; then, the transmission parameters between the terminal and the first cell are detected; if the transmission parameters meet the transmission conditions, it means that the transmission environment between the terminal and the first cell is good, and cell switching can be omitted, and the cell switching function is turned off at this time; thereby reducing the situation where the terminal fails to perform blind switching or blind redirection, and further reducing the situation where the terminal experiences Internet lag or call drops.

[0060] Step 204: The terminal enables a cell switching function to switch or redirect to a second cell;

[0061] It can be understood that at least when the measurement result of the first cell meets the blind switching condition or the blind redirection condition, the cell switching function is turned off, and the transmission parameters are detected; if the transmission parameters do not meet the transmission conditions, the terminal is allowed to perform cell switching; in this way, the problem of a high packet loss rate caused by the poor transmission environment between the terminal and the first cell but the terminal is still locked in the first cell can be solved, thereby reducing the situation of terminal Internet access lag or call drops.

[0062] In the embodiments of the present application, there is no limitation on the detection method of the above-mentioned transmission parameters. In some embodiments, the terminal can directly measure the reception quality of the first cell, for example, measuring the RSRP, RSSI and / or SNR of the first cell, and determine the transmission parameters based on at least one of these parameters. Accordingly, the transmission condition can be that RSRP is greater than a corresponding set threshold, RSSI is greater than a corresponding set threshold and / or SNR is greater than a corresponding set threshold. In other embodiments, the terminal can also detect the transmission parameters of the first cell according to steps 403 and 404 of the following embodiments.

[0063] Step 205: The terminal turns off the transmission parameter detection function to prohibit detection of the transmission environment between the terminal and the first cell.

[0064] It can be understood that when the transmission parameters do not meet the transmission conditions, the transmission parameter detection function is turned off, and the transmission parameter detection function is turned on again when the terminal resides in the first cell and at least when the measurement structure of the first cell meets the blind switching condition or the blind orientation condition, so as to determine whether to keep the terminal residing in the first cell based on the transmission parameters; in this way, the terminal power consumption is saved while reducing the number of connection interruptions that occur in the terminal.

[0065] The present invention also provides a method for controlling cell switching. Figure 4 A schematic diagram of the implementation flow of the cell switching control method provided in the embodiment of the present application is shown in FIG. Figure 4 As shown, the method may include the following steps 401 to 407:

[0066] In step 401, when the terminal resides in the first cell, when the measurement result of the first cell meets the blind switching condition or the blind redirection condition, the terminal performs cell switching to switch or redirect to the second cell; if the terminal fails to access the second cell and switches back to the first cell, execute step 402; if the terminal successfully accesses the second cell, execute step 407.

[0067] It can be understood that when a terminal undergoes blind switching or blind redirection to a second cell, fails to access the second cell and returns to the first cell again, the base station will continue to trigger blind switching or blind redirection (for example, sending a blind switching or blind redirection instruction to the terminal) according to the usual base station judgment mechanism, resulting in frequent Internet access freezes or call drops on the terminal; however, in an embodiment of the present application, the solution breaks this mechanism. When a terminal undergoes blind switching or blind redirection to a second cell and fails to access and returns to the first cell again, the terminal turns off the cell switching function and detects the transmission parameters between the terminal and the first cell. When the transmission parameters meet the transmission conditions, the cell switching function is kept in the off state; thereby, the terminal does not perform cell switching and remains in the first cell, thereby reducing Internet access freezes or call drops caused by switching.

[0068] Step 402: The terminal disables the cell switching function;

[0069] Step 403: The terminal sends at least one first message to the first cell;

[0070] Step 404: The terminal determines the transmission parameter according to the second message returned by the first cell based on the at least one first message;

[0071] The transmission parameters include a first parameter and / or a second parameter, the first parameter represents the reception quality of the second message, and the second parameter represents the transmission rate of the first message and / or the second message.

[0072] In the embodiment of the present application, the type of the first parameter is not limited and can be various, as long as it can represent the reception quality of the second message. For example, the first parameter is a packet loss rate or a bit error rate.

[0073] Of course, there is no limitation on the type of the second parameter, as long as it can represent the transmission rate of the first message and / or the second message. For example, the second parameter is the average flight time of the first message and the second message.

[0074] It can be understood that in the embodiment of the present application, the transmission parameters are determined based on the actual interaction between the terminal and the first cell; compared with determining the quality of the transmission environment based on the measurement results of the first cell, the transmission parameters obtained by the former can more accurately reflect the actual receiving capability of the terminal and more accurately reflect the quality of the transmission environment between the terminal and the first cell; thereby, the terminal can make a more accurate decision to determine whether to continue to keep the cell switching function turned off; and further, on the one hand, it reduces the situation of cell switching failure caused by turning on the cell switching function due to the actual transmission environment meeting the transmission conditions but the transmission parameters not meeting the transmission conditions; on the other hand, it reduces the situation of Internet access freezes or call drops caused by continuing to keep the cell switching function turned off due to the actual transmission environment not meeting the transmission conditions but the transmission parameters meeting the transmission conditions.

[0075] In step 405 , the terminal determines whether the transmission parameters meet the transmission conditions; if so, the cell switching function is kept in a closed state; otherwise, step 406 is executed.

[0076] The transmission condition includes whether the relationship between the first parameter and the corresponding threshold value satisfies the first condition and / or whether the relationship between the second parameter and the corresponding threshold value satisfies the second condition. In the case where the transmission parameters include the first parameter and the second parameter, the transmission condition may also be the above-mentioned condition, i.e., if the relationship between the first parameter and the corresponding threshold value satisfies the first condition and / or the relationship between the second parameter and the corresponding threshold value satisfies the second condition, then it is determined that the transmission parameters satisfy the transmission condition.

[0077] For example, the first parameter is the packet loss rate or the bit error rate, and accordingly, the first condition is that the packet loss rate or the bit error rate is less than the corresponding set threshold; the second parameter is the average flight time of the first message and the second message, and the second condition is that the average flight time is less than the corresponding set threshold.

[0078] Step 406: The terminal enables a cell handover function to switch or redirect to a second cell; and disables a transmission parameter detection function to prohibit detection of transmission parameters between the terminal and the first cell.

[0079] Step 407: The terminal prohibits detecting the transmission parameters between the terminal and the first cell.

[0080] It can be understood that when the terminal successfully accesses the second cell, the terminal turns off the transmission parameter detection function; in this way, power consumption and computing resources can be saved.

[0081] In some embodiments, the first cell belongs to the first network, the second cell belongs to the second network, and the first network and the second network are networks of different communication standards; in this way, the problem of long connection interruption delay caused by blind switching in the inter-system switching scenario is solved, thereby improving the user's Internet experience and call experience.

[0082] Furthermore, in some embodiments, the first network has a higher priority than the second network. For example, the data transmission rate of the first network is higher than that of the second network. This can solve the problem that a terminal could have continued to operate on the first network and enjoyed a high data transmission rate, but was forced to blindly switch or blindly redirect the terminal to the second network by the base station, thereby ensuring the terminal user's best experience on the first network.

[0083] Actual field tests have found that in weak signal scenarios, especially in basements, elevators, and high-rise buildings, RSRP fluctuates very rapidly. When users are actually using 5G in these locations, RSRP can easily drop to below -110, triggering a blind handover mechanism from NR to LTE. If the LTE communication environment in the actual network is also poor at this time, redirection to LTE will not meet the LTE system's S admission rules, resulting in redirection failure and a return to the NR band. This can cause noticeable lag in users' online experiences (such as watching live broadcasts or gaming), impacting the user experience.

[0084] During actual field tests, it was found that the above phenomenon occurred in the n78 frequency band of telecom base stations in weak signal scenarios such as basements and elevators. When the signal weakened to -110dBm to -115dBm, the terminal redirected from NR to LTE, but did not meet the S admission principle (LTE RSRP was also very poor at this time, and LTE could not connect), so the terminal had to switch back to NR. However, in actual measurements, it was found that if the redirection function was disabled and NR operation was locked, even if the RSRP faded to -118dBm, the Internet could still be accessed normally and smoothly.

[0085] Based on this, the following describes an exemplary application of the embodiment of the present application in a practical application scenario.

[0086] 1. Added judgment mechanism A, which is usually in silent state (i.e., not working state). When NR redirects to LTE, but LTE network access fails and returns to NR again, judgment mechanism A is triggered;

[0087] 2. Determination mechanism A will first suppress inter-system handover (i.e., disable the cell handover function), allowing the terminal to focus on the current NR data network. A new ping operation is added: every 1 second, the terminal sends its IP address to the currently connected base station 50 times, requesting the base station to return the same data packet. The terminal analyzes the reception quality of the packet. If the packet loss rate is within 10% and the average round-trip time does not exceed 100ms, it indicates that the transmission environment between the terminal and the NR network is good. The inter-system handover is then suppressed, thus locking the current communication link to the 5G NR network.

[0088] 3. If the measured packet loss rate is above 10%, or the average round-trip time exceeds 100ms, indicating that the 5G NR network environment is deviated, the inter-system handover is enabled (i.e., the cell handover function is turned on) and the judgment mechanism A is silent.

[0089] 4. If the terminal can access the network normally after switching to LTE, the silent judgment mechanism A is continued until the triggering environment described in 1 occurs (NR redirects to LTE, LTE network access fails and returns to NR again);

[0090] 5. Repeat the above process.

[0091] The above technical solution achieves the following beneficial effect: 1. It solves the problem where a mobile phone or other terminal could continue to operate in NR and enjoy 5G benefits under the current RSRP measurement value, but is forced to switch to LTE due to the threshold value on the base station side;

[0092] Beneficial effect 2 obtained by the above technical solution: This solution can achieve a customized effect and can maximize the experience of each mobile phone on the 5G network based on its own communication performance.

[0093] In the embodiment of the present application, a separate trigger-type judgment mechanism A is added to avoid the blind switching scenario of the different system caused by the current sudden change of the signal (especially the weak signal scenario), thereby ensuring the maximum experience of the terminal 5G user on the NR network.

[0094] The above solution is to solve the connection interruption problem caused by blind switching or blind redirection from the perspective of the terminal; the following solution is to solve this type of problem from the base station side: the base station adds a modification mechanism B for the terminal, and the mechanism B is usually in a silent state; when NR redirects LTE, LTE network access fails and returns to the NR scenario again, the base station triggers the modification mechanism B; wherein, the modification mechanism B includes: reducing the trigger threshold RSRP of blind switching or blind redirection by a first value, so that the latest trigger threshold of blind switching or blind redirection is the current trigger threshold minus the first value. In the embodiment of the present application, there is no limit on the size of the first value, so as to reduce the connection interruption of the terminal in the blind switching or blind redirection scenario. For example, the first value is 2dBm;

[0095] Based on this, the base station continues to perform the blind handover or blind redirection mechanism according to the latest trigger threshold of the blind handover or blind redirection in subsequent work.

[0096] The above solution ensures the NR residence time by lowering the threshold from the perspective of the base station side.

[0097] It should be noted that although the steps of the method of the present application are described in a specific order in the drawings, this does not require or imply that the steps must be performed in this specific order, or that all steps must be performed to achieve the desired results. Additionally or alternatively, some steps may be omitted, multiple steps may be combined into one step, and / or one step may be decomposed into multiple steps; or steps in different embodiments may be combined to form a new technical solution.

[0098] Based on the foregoing embodiments, an embodiment of the present application provides a cell switching control device, which is applied to a terminal. The device includes the modules included and the units included in each module, which can be implemented by a processor; of course, it can also be implemented by a specific logic circuit; in the implementation process, the processor can be a central processing unit (CPU), a microprocessor (MPU), a digital signal processor (DSP) or a field programmable gate array (FPGA), etc.

[0099] Figure 5 A schematic diagram of the structure of a cell switching control device provided in an embodiment of the present application is shown in FIG. Figure 5 As shown, the cell switching control device 50 includes:

[0100] The detection module 501 is configured to, when the terminal resides in a first cell, detect a transmission parameter between the terminal and the first cell at least when a measurement result of the first cell meets a blind handover condition or a blind redirection condition;

[0101] The determination module 502 is configured to determine whether to keep the terminal camped in the first cell according to the transmission parameter.

[0102] In some embodiments, the detection module 501 is further configured to: when the terminal resides in the first cell, at least when the measurement result of the first cell meets the blind switching condition or the blind redirection condition, turn off the cell switching function of the terminal to prohibit the terminal from switching or redirecting to the second cell; the determination module 502 is configured to determine whether to keep the cell switching function in the off state based on the transmission parameters.

[0103] In some embodiments, the determination module 502 is configured to keep the cell switching function in an off state when the transmission parameters meet the transmission conditions so that the terminal remains in the first cell; and to turn on the cell switching function when the transmission parameters do not meet the transmission conditions so that the terminal switches or is redirected to the second cell.

[0104] In some embodiments, the determination module 502 is further configured to: if the transmission parameter does not meet the transmission condition, shut down the detection module 501 to prohibit detection of the transmission parameter between the terminal and the first cell.

[0105] In some embodiments, the first cell belongs to a first network, the second cell belongs to a second network, and the first network and the second network are networks of different communication standards.

[0106] In some embodiments, the data transmission rate of the first network is higher than the data transmission rate of the second network.

[0107] In some embodiments, the detection module 501 is configured to: switch or redirect to the second cell when the measurement result of the first cell meets the blind switching condition or the blind redirection condition, and turn off the cell switching function when the terminal fails to access the second cell and switches back to the first cell.

[0108] In some embodiments, the detection module 501 is configured to: disable the cell switching function when the measurement result of the first cell meets the blind switching condition or the blind redirection condition.

[0109] In some embodiments, the determination module 502 is further configured to: prohibit detection of transmission parameters between the terminal and the first cell if the terminal successfully accesses the second cell.

[0110] In some embodiments, the detection module 501 is configured to: send at least one first message to the first cell; determine the transmission parameter based on the second message returned by the first cell based on the at least one first message; wherein the transmission parameter includes a first parameter and / or a second parameter, the first parameter represents the reception quality of the second message, and the second parameter represents the transmission rate of the first message and / or the second message.

[0111] The description of the above device embodiment is similar to the description of the above method embodiment and has similar beneficial effects as the method embodiment. For technical details not disclosed in the device embodiment of this application, please refer to the description of the method embodiment of this application for understanding.

[0112] It should be noted that the division of modules in the cell handover control device in the embodiments of the present application is schematic and is merely a logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units. They may also be implemented in a combination of software and hardware.

[0113] It should be noted that, in the embodiment of the present application, if the above method is implemented in the form of a software function module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present application is essentially or the part that contributes to the relevant technology can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for enabling the terminal to execute all or part of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a U disk, a mobile hard disk, a read-only memory (ROM), a magnetic disk or an optical disk. In this way, the embodiment of the present application is not limited to any specific combination of hardware and software.

[0114] The embodiment of the present application provides a terminal, Figure 6 This is a schematic diagram of the hardware entity of the terminal in the embodiment of the present application, such as Figure 6 As shown, the terminal 102 includes a memory 601 and a processor 602. The memory 601 stores a computer program that can be run on the processor 602. When the processor 602 executes the program, the steps in the method provided in the above embodiment are implemented.

[0115] It should be noted that the memory 601 is configured to store instructions and applications executable by the processor 602, and can also cache data to be processed or processed by various modules in the processor 602 and the terminal 102 (for example, image data, audio data, voice communication data, and video communication data), which can be implemented through flash memory (FLASH) or random access memory (Random Access Memory, RAM).

[0116] An embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the steps of the method provided in the above embodiment are implemented.

[0117] An embodiment of the present application provides a computer program product containing instructions, which, when executed on a computer, enables the computer to execute the steps of the method provided in the above method embodiment.

[0118] It should be noted that the description of the above storage medium and device embodiments is similar to the description of the above method embodiments and has similar beneficial effects as the method embodiments. For technical details not disclosed in the storage medium, storage medium, and device embodiments of this application, please refer to the description of the method embodiments of this application for understanding.

[0119] It should be understood that "one embodiment" or "an embodiment" or "some embodiments" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, "in one embodiment" or "in an embodiment" or "in some embodiments" appearing throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application. The above-mentioned serial numbers of the embodiments of the present application are for description only and do not represent the advantages and disadvantages of the embodiments. The above description of the various embodiments tends to emphasize the differences between the various embodiments. The same or similar aspects can be referenced to each other. For the sake of brevity, they will not be repeated here.

[0120] The term "and / or" in this article is only a description of the association relationship between associated objects, indicating that there can be three relationships. For example, object A and / or object B can mean: object A exists alone, object A and object B exist at the same time, and object B exists alone.

[0121] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0122] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. The embodiments described above are merely illustrative. For example, the division of the modules is merely a logical function division. In actual implementation, there may be other division methods, such as: multiple modules or components can be combined, or can be integrated into another system, or some features can be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the components shown or discussed can be through some interfaces, and the indirect coupling or communication connection of devices or modules can be electrical, mechanical or other forms.

[0123] The modules described above as separate components may or may not be physically separated, and the components displayed as modules may or may not be physical modules; they may be located in one place or distributed across multiple network units; some or all of the modules may be selected according to actual needs to achieve the purpose of this embodiment.

[0124] In addition, all functional modules in the embodiments of the present application can be integrated into one processing unit, or each module can be a separate unit, or two or more modules can be integrated into one unit; the above-mentioned integrated modules can be implemented in the form of hardware or in the form of hardware plus software functional units.

[0125] Those skilled in the art will understand that all or part of the steps of implementing the above-mentioned method embodiment can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps of the above-mentioned method embodiment; and the aforementioned storage medium includes: mobile storage devices, read-only memories (ROM), magnetic disks or optical disks, and other media that can store program codes.

[0126] Alternatively, if the above-mentioned integrated unit of the present application is implemented in the form of a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present application, or the part that contributes to the relevant technology, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling the terminal to execute all or part of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as mobile storage devices, ROMs, magnetic disks or optical disks.

[0127] The methods disclosed in the several method embodiments provided in this application can be arbitrarily combined without conflict to obtain new method embodiments.

[0128] The features disclosed in the several product embodiments provided in this application can be arbitrarily combined without conflict to obtain new product embodiments.

[0129] The features disclosed in the several method or device embodiments provided in this application can be arbitrarily combined without conflict to obtain new method embodiments or device embodiments.

[0130] The above is merely an embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A cell handover control method, characterized in that: Applied to a terminal, the method includes: When the terminal resides in a first cell, at least when a measurement result of the first cell satisfies a blind handover condition or a blind redirection condition, detecting a transmission parameter between the terminal and the first cell; the at least when the measurement result of the first cell satisfies the blind handover condition or the blind redirection condition including: switching or redirecting to a second cell when the measurement result of the first cell satisfies the blind handover condition or the blind redirection condition; and a case where the terminal fails to access the second cell and is re-switched to the first cell; determining, according to the transmission parameter, whether to keep the terminal camped in the first cell; The method further comprises: When the terminal resides in a first cell, at least when a measurement result of the first cell meets a blind handover condition or a blind redirection condition, disabling a cell handover function of the terminal to prohibit the terminal from being handed over or redirected to a second cell; Accordingly, the determining, based on the transmission parameter, whether to keep the terminal camped in the first cell includes: Determine whether to keep the cell switching function in a disabled state according to the transmission parameter.

2. The method according to claim 1, characterized in that The determining, according to the transmission parameter, whether to keep the cell switching function in a disabled state includes: When the transmission parameter satisfies the transmission condition, keeping the cell switching function in a disabled state so that the terminal remains stationed in the first cell; When the transmission parameter does not meet the transmission condition, the cell switching function is enabled so that the terminal is switched or redirected to the second cell.

3. The method according to claim 2, characterized in that The method further comprises: If the transmission parameter does not meet the transmission condition, a transmission parameter detection function is disabled to prohibit detection of the transmission parameter between the terminal and the first cell.

4. The method according to claim 1, wherein The first cell belongs to a first network, the second cell belongs to a second network, and the first network and the second network are networks of different communication standards.

5. The method according to claim 4, characterized in that The data transmission rate of the first network is higher than the data transmission rate of the second network.

6. The method according to claim 1, characterized in that The method further comprises: In a case where the terminal successfully accesses the second cell, detecting transmission parameters between the terminal and the first cell is prohibited.

7. The method according to any one of claims 1 to 5, characterized in that The detecting a transmission parameter between the terminal and the first cell includes: sending at least one first message to the first cell; determining the transmission parameter according to a second message returned by the first cell based on the at least one first message; The transmission parameter includes a first parameter and / or a second parameter, the first parameter represents the reception quality of the second message, and the second parameter represents the transmission rate of the first message and / or the second message.

8. A cell switching control device, characterized in that: Applied to a terminal, the device includes a detection module and a determination module; wherein, The detection module is configured to, when the terminal is camped on a first cell, detect a transmission parameter between the terminal and the first cell at least when a measurement result of the first cell satisfies a blind handover condition or a blind redirection condition; the at least when the measurement result of the first cell satisfies the blind handover condition or the blind redirection condition includes: switching or redirecting to a second cell when the measurement result of the first cell satisfies the blind handover condition or the blind redirection condition; and a case where the terminal fails to access the second cell and is re-switched to the first cell; The determination module is configured to determine whether to keep the terminal stationed in the first cell based on the transmission parameters; wherein, it also includes: when the terminal is stationed in the first cell, at least when the measurement result of the first cell meets the blind switching condition or the blind redirection condition, turning off the cell switching function of the terminal to prohibit the terminal from switching or redirecting to the second cell; accordingly, the determination of whether to keep the terminal stationed in the first cell based on the transmission parameters includes: determining whether to keep the cell switching function in a turned-off state based on the transmission parameters.

9. A terminal comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, characterized in that: When the processor executes the program, the method according to any one of claims 1 to 7 is implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 7 is implemented.

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