CN115278795A - Cell switching control method, device, equipment and storage medium - Google Patents
Cell switching control method, device, equipment and storage medium Download PDFInfo
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- CN115278795A CN115278795A CN202210842483.4A CN202210842483A CN115278795A CN 115278795 A CN115278795 A CN 115278795A CN 202210842483 A CN202210842483 A CN 202210842483A CN 115278795 A CN115278795 A CN 115278795A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
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Abstract
The application provides a cell switching control method, a device, equipment and a storage medium; the method is applied to a terminal and comprises the following steps: under the condition that a terminal is resided in a first cell, detecting transmission parameters between the terminal and the first cell at least when the measurement result of the first cell meets a blind handover condition or a blind redirection condition; and determining whether to enable the terminal to stay resident in the first cell or not according to the transmission parameters.
Description
Technical Field
The present application relates to communication technologies, and in particular, to a method, an apparatus, a device, and a storage medium for controlling cell handover.
Background
When the terminal is switched or redirected, the detected adjacent cell information is reported through the measurement report, and the base station selects the optimal cell as a target cell according to the measurement report and the adjacent cell configuration condition so as to ensure the service experience of a user.
However, not all terminals support all types of measurements, even if the terminals support various measurements, since the performance of the terminal receivers is different and the network air interface environment is complex, a certain time is required for the terminals to perform the measurements, which may cause the terminals to fail to detect the cells satisfying the measurement report, and thus fail to trigger the cell handover.
In order to ensure the continuity of the user service as much as possible, the users of the cell can be migrated to other cells through blind handover or blind redirection. The blind handover and blind redirection means that the base station does not select a target cell based on the measurement reporting condition, but directly commands the terminal to perform blind handover or blind redirection to a certain target cell.
However, the blind handover and blind redirection method lacks basis when selecting the target cell, so that the selected target cell is not suitable at a high probability, and the blind handover or blind redirection process fails, thereby causing a situation that a terminal has a network card pause or a call drop.
Disclosure of Invention
In view of this, the cell switching control method, device, and storage medium provided in the present application can reduce the situation of a terminal call drop or a significant display stuck on the internet due to blind switching or blind redirection.
According to an aspect of the embodiments of the present application, a cell handover control method is provided, which is applied to a terminal, and the method includes: under the condition that a terminal is resided in a first cell, detecting transmission parameters between the terminal and the first cell at least when the measurement result of the first cell meets a blind handover condition or a blind redirection condition; determining whether to make the terminal stay camped on the first cell according to the transmission parameters;
therefore, at least when the measurement result of the first cell meets the blind handover condition or the blind redirection condition, the chance that the terminal continues to stay in the first cell is increased, and compared with a scheme that the cell handover is directly triggered when the measurement result of the first cell meets the blind handover condition or the blind redirection condition, the situation of long connection interruption time delay caused by that the terminal returns to the first cell again when the terminal does not meet the access condition during the blind handover or the blind redirection to a second cell designated by the base station can be reduced, and the situation that the call drop of the terminal or the internet surfing is obviously blocked due to the long connection interruption time delay is further reduced.
In some embodiments, the method further comprises: under the condition that the terminal is resident in a first cell, at least when the measurement result of the first cell meets a blind handover condition or a blind redirection condition, closing a cell handover function of the terminal to prohibit the terminal from being handed over or being redirected to a second cell; correspondingly, the determining whether to make the terminal stay camped on the first cell according to the transmission parameters includes: determining whether to keep the cell switching function in a closed state or not according to the transmission parameters;
therefore, at least when the measurement result of the first cell meets the blind handover condition or the blind redirection condition, the cell handover function is closed, and the situation of long connection interruption time delay caused by that the terminal returns to the first cell again when the terminal does not meet the access condition in the blind handover or the blind redirection to the second cell appointed by the base station is prevented.
In some embodiments, the determining whether to keep the cell switching function in an off state according to the transmission parameter includes: under the condition that the transmission parameters meet the transmission conditions, keeping the cell switching function in a closed state so as to enable the terminal to stay in the first cell; under the condition that the transmission parameter does not meet the transmission condition, starting the cell switching function so that the terminal can be switched or redirected to the second cell;
thus, the cell switching function is started under the condition that the transmission parameter does not meet the transmission condition so that the terminal can be switched or redirected to a second cell; therefore, the problem of high packet loss rate caused by poor transmission environment between the terminal and the first cell and the fact that the terminal is still locked in the first cell can be solved, and the situations of network card pause or call drop of the terminal are reduced.
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 systems; therefore, the problem of long time delay of connection interruption caused by blind switching in a scene of switching between different systems is solved, and the internet surfing experience and the conversation experience of a user are improved.
Further, in some embodiments, the data transfer rate of the first network is higher than the data transfer rate of the second network; therefore, the problem that the terminal originally can continue to work in the first network to enjoy high data transmission rate, but the terminal is forced to be blindly switched or blindly redirected to the second network by the base station side can be solved, and the maximum experience of the terminal user on the first network is ensured.
In some embodiments, the at least when the measurement result of the first cell satisfies a blind handover condition or a blind redirection condition, the method includes: switching or redirecting to the second cell when the measurement result of the first cell meets the blind switching condition or the blind redirecting condition; and the situation that the terminal fails to access the second cell and is switched to the first cell again.
It can be understood that when the terminal is in blind handover or blind redirection to the second cell, and the terminal fails to access the second cell and returns to the first cell again, the base station will always trigger blind handover or blind redirection according to a previous base station determination mechanism, which causes frequent network congestion or call drop at the terminal; in the embodiment of the application, the scheme breaks through the mechanism, and under the condition that the access fails and returns to the first cell again due to blind switching or blind redirection to the second cell, the cell switching function of the terminal is closed, the terminal detects the transmission parameters between the terminal and the first cell, and when the transmission parameters meet the transmission conditions, the terminal still stays in the first cell, so that the conditions of network jamming or call drop caused by switching are reduced.
In some embodiments, the detecting a transmission parameter between the terminal and the first cell includes: transmitting 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; wherein the transmission parameters comprise a first parameter characterizing a reception quality of the second message and/or a second parameter characterizing a transmission rate of the first message and/or the second message;
thus, the transmission parameters are determined according to the actual interaction condition of the terminal and the first cell; compared with the method for determining the quality of the transmission environment based on the measurement result of the first cell, the transmission parameter obtained by the method 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; therefore, the terminal can make more accurate decision for determining whether to keep the cell switching function closed or not; furthermore, on one hand, the situation of switching failure caused by cell switching because the actual transmission environment meets the transmission condition but the transmission parameter does not meet the transmission condition is reduced; on the other hand, the situation of network jamming or call drop caused by the fact that the actual transmission environment does not meet the transmission condition but the transmission parameters meet the transmission condition and cell switching is not carried out is reduced.
According to an aspect of the embodiments of the present application, there is provided a cell handover control apparatus, which is applied to a terminal, and includes a detection module and a determination module; the detection module is configured to detect a transmission parameter between the terminal and a first cell at least when a measurement result of the first cell meets a blind handover condition or a blind redirection condition under the condition that the terminal is camped on the first cell; the determining module is configured to determine whether to cause the terminal to remain camped on the first cell according to the transmission parameter.
According to an aspect of the embodiments of the present application, there is provided a terminal, including a memory and a processor, where the memory stores a computer program operable on the processor, and the processor executes the program to implement the method according to the embodiments of the present application.
According to an aspect of the embodiments of the present application, there is provided a computer-readable storage medium on which a computer program is stored, the computer program, when executed by a processor, implementing the method provided by the embodiments of the present application.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
The flowcharts shown in the figures are illustrative only and do not necessarily include all of the contents and operations/steps, nor do they necessarily have to be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the actual execution sequence may be changed according to the actual situation.
Fig. 1 is a schematic diagram of a network architecture to which the present invention may be applied;
fig. 2 is a schematic flowchart illustrating an implementation of a cell handover control method according to an embodiment of the present application;
fig. 3 is a schematic diagram illustrating a comparison of closing timings of a cell handover function according to an embodiment of the present application;
fig. 4 is a schematic flowchart illustrating an implementation of another cell handover control method according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a cell handover control apparatus according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a terminal according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, specific technical solutions of the present application will be described in further detail below with reference to the accompanying drawings in the embodiments of the present application. The following examples are intended to illustrate the present application, but are not intended to limit the scope of the present application.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of the present application only and is not intended to be limiting of the application.
In the following description, references are made to "some embodiments," "this embodiment," "embodiments of the present application," and examples, etc., which describe a subset of all possible embodiments, but it is understood that "some embodiments" can be the same subset or different subsets of all possible embodiments, and can be combined with each other without conflict.
The network architecture and the service scenario described in the embodiment of the present application are for more clearly illustrating the technical solution of the embodiment of the present application, and do not constitute a limitation on the technical solution provided in the embodiment of the present application. As can be known to those skilled in the art, with the evolution of network architecture and the emergence of new service scenarios, the technical solution provided in the embodiments of the present application is also applicable to similar technical problems.
Fig. 1 illustrates a network architecture to which embodiments of the present application may be applied. As shown in fig. 1, the network architecture provided by the present embodiment includes: a network device 101 and a terminal 102. The terminal according to the embodiments of the present application may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem, and various forms of user terminal devices (terminal devices) or Mobile Stations (MSs) and so on. The network device according to the embodiments of the present application is a device deployed in a radio access network to provide a terminal with a wireless communication function. In the embodiment of the present application, the network device may be, for example, a base station shown in fig. 1, and the base station may include various forms of macro base stations, micro base stations, relay stations, or access points.
The cell handover control method provided in the embodiment of the present application may be applied to the terminal 102, where the terminal 102 supports a fourth Generation mobile communication system (the 4G), a fifth Generation mobile communication technology (5 th-Generation wireless communication technology, 5G), a New Radio (NR) system and/or a terminal of a future communication system, and may also be a terminal of other various wireless communication systems.
Blind redirection: the method does not measure a target cell, and under the condition of unknown signal quality of the target cell, the network directly indicates the terminal to try to reside in a specified system/frequency point after leaving a connected state through redirected Carrier Info in an RRC Connection Release (RRC Connection Release) message.
Blind switching: similar to blind redirection, the base station does not need to indicate the terminal to measure the signal quality of the candidate cell, directly generates a target cell or a target frequency point list according to the related priority parameter, and transmits the target cell or the target frequency point list to the terminal, and the terminal directly tries to switch to the designated target cell.
The current NR/LTE network handover is determined by a base station according to Reference Signal Receiving Power (RSRP) reported by a terminal, and a main determination threshold is shown in table 1 below:
TABLE 1
| Parameter Chinese name | Suggested value |
| Inter-system handover E-UTRAN measurement parameter group identification | 0 |
| Inter-system handover measurement parameter set identification | 0 |
| Inter-system handover A1 RSRP threshold | -100dBm |
| Inter-system handover A2 RSRP threshold | -105dBm |
| Coverage based handover to E-UTRAN blind A2 RSPR threshold | -110dBm |
As shown in table 1, when the RSRP reported by the terminal to the base station is lower than-110 dBm (for example, the RSRP reported by the terminal to the base station is-112 dBm), a blind handover mechanism is triggered, and the terminal performs blind handover from NR to LTE; it should be noted that the proposed values in table 1 are only reference values, and the threshold values of the base stations in different regions of each operator are different.
The blind cut mechanism mentioned in the above scenario may be blind redirection or blind handover. Of course, the blind redirection or blind handover method mentioned in the following embodiments is not only applicable to the blind redirection or blind handover between NR and LTE, but also applicable to other inter-system handover, etc. In summary, the scenario where the RSRP or other measurement parameter of the serving cell is below a certain threshold triggers the blind cut mechanism is applicable.
The embodiment of the application provides a cell switching control method, which comprises the following steps: under the condition that the terminal is resident in the first cell, the terminal detects transmission parameters between the terminal and the first cell at least when the measurement result of the first cell meets a blind handover condition or a blind redirection condition; and the terminal determines whether to stay in the first cell or not according to the transmission parameters.
It is to be understood that the determining, by the terminal, whether to remain camped on the first cell according to the transmission parameters includes: under the condition that the transmission parameters meet the transmission conditions, the terminal does not perform cell switching and still stays in the first cell; therefore, on one hand, the connection interruption time delay caused by the fact that the RRC connection needs to be released firstly when the terminal carries out blind handover or blind redirection is prevented; on the other hand, the longer connection interruption time delay caused by that the terminal returns to the first cell again when the terminal is switched blindly or redirected to the second cell appointed by the base station without meeting the access condition is reduced, so that the condition that the call of the terminal is dropped or the internet is obviously jammed due to the longer connection interruption time delay is reduced.
Under the condition that the transmission parameters do not meet the transmission conditions, the terminal performs cell switching and does not stay in the first cell any more; thus, on one hand, the conditions for the terminal to perform cell handover in the weak network environment are as follows: at least when the measurement result of the first cell meets the blind handover condition or the blind redirection condition, and the transmission parameter does not meet the transmission condition, the cell handover is performed instead of only when the measurement result of the first cell meets the blind handover condition or the blind redirection condition, so that the operation times of cell handover are reduced, and the power consumption of the terminal is saved; on the other hand, under the condition that the transmission parameters do not meet the transmission conditions, the terminal performs cell switching, so that the problem of network card pause or call drop caused by the fact that the transmission environment between the terminal and the first cell is poor but the terminal is still locked in the first cell is solved.
Fig. 2 is a schematic flow chart illustrating an implementation of the cell handover control method provided in the embodiment of the present application, and as shown in fig. 2, the method may include the following steps 201 to 205:
The terminal closes the cell switching function at least when the measurement result of the first cell meets the blind switching condition or the blind redirection condition; that is, the timing for the terminal to turn off the cell switching function is at least in the case that the measurement result of the first cell satisfies the blind switching condition or the blind redirection condition. For example, in an embodiment, if the terminal determines that the measurement result of the first cell meets the blind handover condition or the blind redirection condition, the terminal closes the cell handover function; therefore, on one hand, the situation of long connection interruption time delay caused by that the terminal returns to the first cell again when the terminal is switched blindly or is directed blindly to the second cell appointed by the base station because the terminal does not meet the access condition can be prevented as early as possible, and the situation of call drop of the terminal or display blockage caused by long connection interruption time delay is further reduced; on the other hand, even if the terminal meets the access condition when the terminal is switched blindly or redirected blindly to the second cell, the process has a certain connection interruption time delay, so that the cell switching function of the terminal is closed when the measurement result of the first cell meets the blind switching condition or the blind redirection condition, the terminal can be locked in the first cell, the terminal is prevented from releasing the RRC connection, and the condition that the connection between the terminal and the network is interrupted is reduced.
For another example, in another embodiment, the timing when the terminal turns off the cell switching function is as follows: 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 when the terminal fails to access the second cell and re-resides in the first cell; therefore, the situation of long connection interruption time delay caused by that the terminal returns to the first cell again when the terminal is switched blindly or is directed blindly to the second cell appointed by the base station in the subsequent process because the terminal does not meet the access condition can be prevented, and the situation that the call of the terminal is dropped or the internet is blocked obviously because the connection interruption time delay is too long is further reduced.
As shown in fig. 3, the two embodiments differ in that: in the former embodiment, the timing when the terminal turns off the cell switching function is as follows: the measurement result of the first cell meets the blind handover condition or the blind redirection condition, namely the terminal is in front of the blind handover or the blind redirection to the second cell; in the latter embodiment, the timing for the terminal to turn off the cell switching function is: and when the measurement result of the first cell meets the blind handover condition or the blind redirection condition, the terminal fails to handover or redirect to the second cell and is handed over to the first cell again, namely when the terminal fails to perform blind handover or blind redirection to the second cell and returns to the first cell again or afterwards.
In some embodiments, the terminal determines that the measurement result of the first cell satisfies a blind handover condition or a blind redirection condition when receiving a blind redirection instruction sent by the base station. The blind redirection instruction may be carried in the RRC Connection Release message, or may be carried in other messages.
In other embodiments, the terminal may also autonomously determine whether the measurement result (e.g., RSRP) of the first cell satisfies a blind handover condition or a blind redirection condition according to a known blind handover threshold or a blind redirection threshold.
In the embodiment of the present application, the terminal first closes the cell switching function, and then performs step 202 to detect the transmission environment; therefore, the problem that the terminal cannot be switched back to the first cell after being switched or redirected to the second cell due to the fact that the cell switching function is not closed in advance when the terminal detects the transmission environment can be prevented.
That is, the terminal determines whether to keep the cell switching function in an off state according to whether the transmission parameter satisfies the transmission condition.
It can be understood that the terminal needs to release the RRC connection before the blind handover or the blind redirection to the second cell designated by the base station, and therefore the blind handover or the blind redirection may cause a certain connection interruption delay. However, if the terminal is handed over to the second cell designated by the base station blindly and then returns to the first cell again because the access condition is not satisfied (e.g. the S access criterion is not satisfied), a longer connection interruption delay may be caused.
In view of this, in the embodiment of the present application, a terminal residing in a first cell at least determines that a measurement result of the first cell meets a blind handover condition or a blind redirection condition, and then closes a cell handover function to prohibit handover or redirection to a second cell; then, detecting transmission parameters between the terminal and the first cell; if the transmission parameter meets the transmission condition, the transmission environment between the terminal and the first cell is better, the cell switching can not be carried out, and the cell switching function is closed at the moment; therefore, the condition that the terminal fails in blind switching or blind redirection is reduced, and the condition that the terminal has network card pause or call drop is further reduced.
it can be understood that, at least when the measurement result of the first cell meets the blind handover condition or the blind redirection condition, the cell handover function is turned off, and the transmission parameter is detected; if the transmission parameter does not meet the transmission condition, allowing the terminal to perform cell switching; therefore, the problem of high packet loss rate caused by poor transmission environment between the terminal and the first cell and the fact that the terminal is still locked in the first cell can be solved, and the situations of network card pause or call drop of the terminal are reduced.
In the embodiment of the present application, the detection method of the transmission parameter is not limited. In some embodiments, the terminal may directly measure the reception quality of the first cell, e.g., measure the RSRP, RSSI, and/or SNR, etc., of the first cell, and determine the transmission parameters based on at least one of these parameters. Accordingly, the transmission condition may be that RSRP is greater than a correspondingly set threshold, RSSI is greater than a correspondingly set threshold and/or SNR is greater than a correspondingly set threshold. In other embodiments, the terminal may also implement the detection of the transmission parameter with the first cell according to steps 403 and 404 of the following embodiments.
It is understood that, in case the transmission parameter does not satisfy the transmission condition, the transmission parameter detection function is turned off, and the transmission parameter detection function is turned on again when the terminal is camped in the first cell and at least when the measurement structure of the first cell satisfies the blind handover condition or the blind orientation condition, so as to determine whether to keep the terminal camped in the first cell according to the transmission parameter; therefore, the power consumption of the terminal is saved while the times of connection interruption of the terminal are reduced.
An embodiment of the present application further provides a cell handover control method, and fig. 4 is a schematic implementation flow diagram of the cell handover control method provided in the embodiment of the present application, and as shown in fig. 4, the method may include the following steps 401 to 407:
In an understandable situation, when a terminal is in blind handover or blind redirection to a second cell and fails to access the second cell and returns to the first cell again, according to a previous base station determination mechanism, the base station may always trigger the blind handover or blind redirection (for example, send a blind handover or blind redirection instruction to the terminal), which causes frequent network congestion or call drop of the terminal; in the embodiment of the application, the scheme breaks through the mechanism, and under the condition that the access fails and returns to the first cell again due to blind handover or blind redirection to the second cell, the terminal closes the cell handover function, detects the transmission parameter between the terminal and the first cell, and keeps the cell handover function in a closed state when the transmission parameter meets the transmission condition; therefore, the terminal still stays in the first cell without cell switching, and the situations of network jamming or call drop caused by switching are reduced.
wherein the transmission parameters comprise a first parameter and/or a second parameter, the first parameter characterizes the receiving quality of the second message, and the second parameter characterizes the transmission rate of the first message and/or the second message.
In the embodiment of the present application, the type of the first parameter is not limited, and may be various, and in short, the reception quality of the second message may be characterized. For example, the first parameter is a packet loss rate or an error rate.
Of course, the type of the second parameter is not limited, and the transmission rate of the first message and/or the second message may be characterized in any way. For example, the second parameter is an average time of flight of the first message and the second message.
It can be understood that, in the embodiment of the present application, the transmission parameter is determined according to the actual interaction situation between the terminal and the first cell; compared with the method for determining the quality of the transmission environment based on the measurement result of the first cell, the transmission parameter obtained by the method 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; therefore, the terminal makes a more accurate decision for determining whether to keep the cell switching function closed or not; furthermore, on one hand, the situation of cell switching failure caused by starting a cell switching function because the actual transmission environment meets the transmission conditions but the transmission parameters do not meet the transmission conditions is reduced; on the other hand, the situation of network connection blockage or call drop caused by continuously keeping the cell switching function closed because the actual transmission environment does not meet the transmission condition but the transmission parameters meet the transmission condition is reduced.
The transmission conditions comprise that the relation between the first parameter and the correspondingly set threshold value meets the first condition and/or the relation between the second parameter and the correspondingly set threshold value meets the second condition. For the case that the transmission parameter includes the first parameter and the second parameter, the transmission condition may also be the above condition, that is, the relationship between the first parameter and the correspondingly set threshold satisfies the first condition, and/or the relationship between the second parameter and the correspondingly set threshold satisfies the second condition, and then it is determined that the transmission parameter satisfies the transmission condition.
For example, the first parameter is a packet loss rate or an error rate, and accordingly, the first condition is that the packet loss rate or the error rate is smaller than a correspondingly 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 smaller than a threshold value set correspondingly.
Understandably, the terminal closes the transmission parameter detection function under the condition that the terminal is successfully accessed to the second cell; in this way, power consumption and computational resources can be saved.
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 systems; therefore, the problem of long time delay of connection interruption caused by blind switching in a scene of switching between different systems is solved, and the internet surfing experience and the conversation experience of a user are improved.
Further, in some embodiments, the priority of the first network is higher than the priority of the second network. For example, the data transfer rate of the first network is higher than the data transfer rate of the second network; therefore, the problem that the terminal originally can continue to work in the first network to enjoy high data transmission rate, but the terminal is forced to be blindly switched or blindly redirected to the second network by the base station side can be solved, and the maximum experience of the terminal user on the first network is ensured.
In the actual field test, the following are found: in a weak signal scene, particularly places such as a ground depot, an elevator and a high building, the RSRP changes very fast, and when a user actually uses 5G in the places, the RSRP is very easy to suddenly fade to be below-110, and then a blind cut mechanism is directly triggered to be switched from NR blind to LTE. If the communication environment of the LTE in the real network is also poor, the S access principle of the LTE system is not satisfied when the terminal is redirected to the LTE, which results in a redirection failure, and then the NR frequency band is returned to redirect to the NR again, which may cause the terminal to be clearly stuck in the internet (e.g., watching live broadcast, game, etc.), thereby affecting the user experience.
In the actual field measurement process, the following are found: the phenomenon occurs in weak signal scenes such as a ground depot and an elevator in a n78 frequency band of a telecommunication base station, when signals are weakened to-110 dBm to-115 dBm, a terminal is redirected to LTE from NR but does not meet an S admission principle (the RSRP of the LTE is very poor at the moment, and the LTE cannot be connected), so the terminal has to be switched back to NR; in actual measurement, if the redirection function is turned off and NR is locked, even if RSRP is degraded to-118 dBm, the network can still be accessed normally and smoothly.
Based on this, an exemplary application of the embodiment of the present application in a practical application scenario will be described below.
1. Adding a judgment mechanism A, wherein the judgment mechanism A is in a silent state (namely an inoperative state) at ordinary times, and when NR redirects LTE, but the LTE fails to access the network and returns to an NR scene again, triggering the judgment mechanism A;
2. the decision mechanism a first silences the inter-system handover (i.e. turns off the cell handover function), so that the terminal concentrates on the current NR data network; adding Ping operation, sending the IP of the terminal to the currently accessed base station 50 times by the terminal every 1s, requiring the base station to return an equal data packet, analyzing the receiving quality of the packet by the terminal, if the packet loss rate is within 10% and the average round-trip time is not more than 100ms, indicating that the transmission environment of the terminal and the NR network is good at the moment, continuing to silence the inter-system switching, and locking the current communication link on the 5G NR network;
3. if the packet loss rate is measured to be more than 10% or the average round-trip time exceeds 100ms, which indicates the network environment deviation of the 5G NR at the moment, the inter-system handover (namely, the cell handover function is started) is enabled, and a silence judgment mechanism A is carried out;
4. if the terminal can normally access the network after being switched to the LTE, continuing the silence determination mechanism A; until the triggering environment 1 appears (NR redirects LTE, LTE network access fails and returns NR again);
5. the above cycle is repeated.
The beneficial effect 1 that above-mentioned technical scheme obtained: the problem that at the moment, terminals such as mobile phones and the like can continue to work in NR (noise ratio) under the current RSRP measurement value and enjoy 5G benefits, but LTE (long term evolution) is forcibly switched due to the base station side threshold value is solved;
the beneficial effect 2 that above-mentioned technical scheme obtained: the scheme can achieve the customized effect, and the experience of each mobile phone in the 5G network can be guaranteed to the maximum extent according to the communication performance of each mobile phone.
In the embodiment of the application, a separate trigger type judgment mechanism a is added to avoid a different system blind-cut scene caused by the current signal abrupt change (especially a weak signal scene), so that the maximum experience of a terminal 5G user on an NR network is ensured.
The scheme is sent from the angle of the terminal to solve the problem of connection interruption caused by blind switching or blind redirection; the following scheme is to solve the problems from the base station side: a base station adds a modification mechanism B aiming at a terminal, wherein the mechanism B is in a silent state at ordinary times; when NR redirection LTE occurs, LTE network access fails and an NR scene is returned again, the base station triggers a modification mechanism B; wherein, the modification mechanism B comprises: and reducing the RSRP of the triggering threshold of the blind switching or the blind redirection by a first numerical value, so as to obtain the latest triggering threshold of the blind switching or the blind redirection as the current triggering threshold minus the first numerical value. In the embodiment of the present application, the size of the first value is not limited, so as to reduce the connection interruption of the terminal in a blind handover or blind redirection scenario. For example, the first value is 2dBm;
based on the blind switching or blind redirection mechanism, the base station continues to execute the blind switching or blind redirection mechanism in the follow-up work according to the latest triggering threshold of the blind switching or blind redirection.
In the scheme, the NR dwell time is ensured by reducing the threshold from the side of the base station.
It should be noted that although the steps of the methods in this application are depicted in the drawings in a particular order, this does not require or imply that the steps must be performed in this particular order or that all of the depicted steps must be performed to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps may be combined into one step execution, and/or one step may be broken down into multiple step executions, etc.; or, the steps in different embodiments are combined into a new technical solution.
Based on the foregoing embodiments, an embodiment of the present application provides a cell handover control apparatus, where the apparatus is applied to a terminal, and the apparatus includes modules included in the apparatus and units included in the modules, and may be implemented by a processor; of course, the implementation can also be realized through a specific logic circuit; in implementation, the processor may be a Central Processing Unit (CPU), a Microprocessor (MPU), a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), or the like.
Fig. 5 is a schematic structural diagram of a cell handover control apparatus according to an embodiment of the present application, and as shown in fig. 5, a cell handover control apparatus 50 includes:
a detecting module 501, configured to detect, in a case where a terminal resides in a first cell, 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;
a determining module 502 configured to determine whether to keep the terminal camped on the first cell according to the transmission parameters.
In some embodiments, the detection module 501 is further configured to: under the condition that the terminal is resident in a first cell, at least when the measurement result of the first cell meets a blind handover condition or a blind redirection condition, closing a cell handover function of the terminal to prohibit the terminal from being handed over or being redirected to a second cell; a determining module 502 configured to determine whether to keep the cell switching function in an off state according to the transmission parameter.
In some embodiments, the determining module 502 is configured to keep the cell switching function in an off state to keep the terminal camped on the first cell if the transmission parameter satisfies a transmission condition; and under the condition that the transmission parameters do not meet the transmission conditions, starting the cell switching function so as to facilitate the terminal to switch or redirect to a second cell.
In some embodiments, the determination module 502 is further configured to: and if the transmission parameter does not satisfy the transmission condition, the detection module 501 is turned off to prohibit the detection of the transmission parameter between the terminal and the first cell.
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 systems.
In some embodiments, the data transfer rate of the first network is higher than the data transfer rate of the second network.
In some embodiments, the detection module 501 is configured to: and switching or redirecting to a second cell when the measurement result of the first cell meets the blind switching condition or the blind redirection condition, and closing the cell switching function under the condition that the terminal fails to access the second cell and is switched to the first cell again.
In some embodiments, the detection module 501 is configured to: and when the measurement result of the first cell meets the blind handover condition or the blind redirection condition, closing the cell handover function.
In some embodiments, the determination module 502 is further configured to: and under the condition that the terminal is successfully accessed to the second cell, the detection of the transmission parameters between the terminal and the first cell is forbidden.
In some embodiments, the detection module 501 is configured to: transmitting 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; wherein the transmission parameters comprise a first parameter characterizing a reception quality of the second message and/or a second parameter characterizing a transmission rate of the first message and/or the second message.
The above description of the apparatus embodiments, similar to the above description of the method embodiments, has similar beneficial effects as the method embodiments. For technical details not disclosed in the embodiments of the apparatus of the present application, reference is made to the description of the embodiments of the method of the present application for understanding.
It should be noted that, in the embodiment of the present application, the division of the module by the cell handover control apparatus is schematic, and is only one logic function division, and another division manner may be provided in actual implementation. In addition, functional units in the embodiments of the present application may be integrated into one processing unit, may exist alone physically, or may be integrated into one unit by two or more units. The integrated unit may be implemented in the form of hardware, or may also be implemented in the form of a software functional unit. Or in a combination of software and hardware.
It should be noted that, in the embodiment of the present application, if the method described above is implemented in the form of a software functional module and sold or used as a standalone product, it may also be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a terminal to execute all or part of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read Only Memory (ROM), a magnetic disk, or an optical disk. Thus, embodiments of the present application are not limited to any specific combination of hardware and software.
Fig. 6 is a schematic diagram of a hardware entity of a terminal according to an embodiment of the present application, and as shown in fig. 6, a terminal 102 includes a memory 601 and a processor 602, where the memory 601 stores a computer program that can run on the processor 602, and the processor 602 executes the computer program to implement the steps in the method provided in the foregoing embodiment.
It should be noted that the Memory 601 is configured to store instructions and applications executable by the processor 602, and may also buffer data (for example, image data, audio data, voice communication data, and video communication data) to be processed or already processed by each module in the processor 602 and the terminal 102, and may be implemented by a FLASH Memory (FLASH) or a Random Access Memory (RAM).
Embodiments of the present application provide a computer-readable storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements the steps in the methods provided in the above embodiments.
Embodiments of the present application provide a computer program product containing instructions which, when run on a computer, cause the computer to perform the steps of the method provided by the above-described method embodiments.
Here, it should be noted that: the above description of the storage medium and device embodiments, similar to the description of the method embodiments above, has similar beneficial effects as the method embodiments. For technical details not disclosed in the embodiments of the storage medium, the storage medium and the device of the present application, reference is made to the description of the embodiments of the method of the present application for understanding.
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" or "some embodiments" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" or "in some embodiments" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application. The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments. The foregoing description of the various embodiments is intended to highlight various differences between the embodiments, and the same or similar parts may be referred to each other, and for brevity, will not be described again herein.
The term "and/or" herein is only one kind of association relationship describing the associated object, and means that there may be three kinds of relationships, for example, object a and/or object B, which may mean: the object A exists alone, the object A and the object B exist simultaneously, and the object B exists alone.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a component of' 8230; \8230;" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described embodiments are merely illustrative, and for example, the division of the modules is only one logical functional division, and other divisions may be realized in practice, such as: multiple modules or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or modules may be electrical, mechanical or other forms.
The modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical modules; can be located in one place or distributed on a plurality of network units; some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, all functional modules in the embodiments of the present application may be integrated into one processing unit, or each module may be separately regarded as one unit, or two or more modules may be integrated into one unit; the integrated module can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
Those of ordinary skill in the art will understand that: all or part of the steps of implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer-readable storage medium, and when executed, executes the steps including the method embodiments; and the aforementioned storage medium includes: various media that can store program codes, such as a removable Memory device, a Read Only Memory (ROM), a magnetic disk, or an optical disk.
Alternatively, the integrated units described above in the present application may be stored in a computer-readable storage medium if they are implemented in the form of software functional modules and sold or used as independent products. Based on such understanding, the technical solutions of the embodiments of the present application or portions thereof that contribute to the related art may be embodied in the form of a software product, where the computer software product is stored in a storage medium and includes several instructions for enabling a terminal to execute all or part of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a removable storage device, a ROM, a magnetic or optical disk, or other various media that can store program code.
The methods disclosed in the several method embodiments provided in the present application may be combined arbitrarily without conflict to arrive at new method embodiments.
Features disclosed in several of the product embodiments provided in the present application may be combined in any combination to yield new product embodiments without conflict.
The features disclosed in the several method or apparatus embodiments provided in the present application may be combined arbitrarily, without conflict, to arrive at new method embodiments or apparatus embodiments.
The above description is only for the embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (12)
1. A cell switching control method is applied to a terminal, and is characterized by comprising the following steps:
under the condition that the terminal is resident in a first cell, detecting transmission parameters between the terminal and the first cell at least when the measurement result of the first cell meets a blind handover condition or a blind redirection condition;
and determining whether to enable the terminal to stay resident in the first cell or not according to the transmission parameters.
2. The method of claim 1, further comprising:
under the condition that the terminal is resident in a first cell, at least when the measurement result of the first cell meets a blind handover condition or a blind redirection condition, closing a cell handover function of the terminal to prohibit the terminal from being handed over or being redirected to a second cell;
correspondingly, the determining whether to make the terminal stay camped on the first cell according to the transmission parameters includes:
and determining whether to keep the cell switching function in a closed state or not according to the transmission parameters.
3. The method of claim 2, wherein the determining whether to keep the cell switching function in an off state according to the transmission parameter comprises:
under the condition that the transmission parameters meet the transmission conditions, keeping the cell switching function in a closed state so as to enable the terminal to stay in the first cell;
and under the condition that the transmission parameter does not meet the transmission condition, starting the cell switching function so that the terminal can be switched or redirected to the second cell.
4. The method of claim 3, further comprising:
and under the condition that the transmission parameter does not meet the transmission condition, closing a transmission parameter detection function to forbid the detection of the transmission parameter between the terminal and the first cell.
5. The method of claim 1, wherein the first cell belongs to a first network, wherein the second cell belongs to a second network, and wherein the first network and the second network are networks of different communication systems.
6. The method of claim 5, wherein the data transfer rate of the first network is higher than the data transfer rate of the second network.
7. The method according to any of claims 1 to 6, wherein the at least when the measurement result of the first cell satisfies a blind handover condition or a blind redirection condition, comprising:
switching or redirecting to a second cell when the measurement result of the first cell meets the blind switching condition or the blind redirecting condition; and the situation that the terminal fails to access the second cell and is switched to the first cell again.
8. The method of claim 7, further comprising:
and under the condition that the terminal is successfully accessed into the second cell, prohibiting the detection of the transmission parameters between the terminal and the first cell.
9. The method according to any of claims 1 to 6, wherein the detecting the transmission parameter between the terminal and the first cell comprises:
transmitting 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;
wherein the transmission parameters comprise a first parameter characterizing a reception quality of the second message and/or a second parameter characterizing a transmission rate of the first message and/or the second message.
10. The device for controlling cell switching is applied to a terminal and comprises a detection module and a determination module; wherein the content of the first and second substances,
the detection module is configured to detect a transmission parameter between the terminal and a first cell at least when a measurement result of the first cell meets a blind handover condition or a blind redirection condition under the condition that the terminal is camped on the first cell;
the determining module is configured to determine whether to cause the terminal to remain camped on the first cell according to the transmission parameter.
11. A terminal comprising a memory and a processor, the memory storing a computer program operable on the processor, wherein the processor when executing the program implements the method of any of claims 1 to 9.
12. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method according to any one of claims 1 to 9.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116489736A (en) * | 2023-06-21 | 2023-07-25 | 荣耀终端有限公司 | Redirection control method, terminal equipment and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116489736A (en) * | 2023-06-21 | 2023-07-25 | 荣耀终端有限公司 | Redirection control method, terminal equipment and storage medium |
| CN116489736B (en) * | 2023-06-21 | 2023-10-20 | 荣耀终端有限公司 | Redirection control method, terminal equipment and storage medium |
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