Cell reselection method and communication equipment

Abstract

Provided are a cell reselection method and a communication device, a terminal device can actively trigger pilot frequency cell measurement or inter-system cell measurement of a serving cell when a pilot frequency point and / or an inter-system frequency point have / does not have a priority and the signal quality of the current serving cell is less than or equal to a first threshold, thereby improving the accuracy of cell reselection. Compared with the existing process, the waiting time of the terminal equipment can be reduced, so that the terminal equipment can reselect the inter-frequency cell or the inter-system cell with better signal quality in time, and the service experience of a user is guaranteed.

Description

Technical Field

[0001] The present application relates to the field of communications, and more specifically, to a cell reselection method and communication equipment. Background Art

[0002] In mobile communication systems, "measurement" is a common and important process. For example, when the terminal device is in an idle state, the terminal device determines whether to reselect to the neighboring cell by measuring the signal quality of the serving cell and the neighboring cell. In current technology, for heterogeneous frequencies and heterogeneous systems, the terminal device will only start measurement for heterogeneous cells with heterogeneous frequency points configured with priority or heterogeneous system cells with heterogeneous system frequency points configured with priority.

[0003] Normally, the base station can configure the general priority of the service frequency corresponding to the current service cell for the terminal device through a system message, and the base station can configure the dedicated priority of the service frequency corresponding to the current service cell for the terminal device through proprietary signaling. In one possible scenario, if the base station only configures a dedicated priority for the service frequency of the terminal device (or, at the same time, also configures a downgraded priority for the service frequency of the terminal device), then the general priority of the hetero-frequency frequency of the terminal device and the general priority of the hetero-system frequency will be ignored. At this time, the hetero-frequency frequency and the hetero-system frequency will be processed as having no priority. In another possible scenario, if the base station does not configure a general priority for the hetero-frequency frequency for the terminal device nor does it configure a general priority for the hetero-system frequency for the terminal device, and the dedicated priority and / or downgraded priority of the hetero-frequency frequency configured by the base station for the terminal device, and the dedicated priority and / or downgraded priority of the hetero-system frequency configured by the base station for the terminal device have timed out and become invalid, at this time, the hetero-frequency frequency and the hetero-system frequency will also be processed as having no priority.

[0004] For inter-frequency points and inter-system points, if there is no priority, the terminal device will not start the measurement of inter-frequency cells and inter-system cells. It can also be understood that the inter-frequency points corresponding to the inter-frequency cells or the inter-system points corresponding to the inter-system cells will not be used as the target frequency points for the terminal device to reselect. At this time, if the signal quality of the service cell of the terminal device is poor, the terminal device cannot reselect to other inter-frequency cells or inter-system cells in time, resulting in poor signals for a long time of the terminal device, affecting the user's service experience. Summary of the invention

[0005] The present application provides a cell reselection method. In the present application, when the signal quality of the service cell of a terminal device is poor, the terminal device can trigger the measurement of an inter-frequency cell or an inter-system cell, thereby reducing the waiting time of the terminal device, so that the terminal device can reselect to the inter-frequency cell or the inter-system cell in time, thereby improving the problem of long-term poor signal of the terminal device and ensuring the user's service experience.

[0006] In a first aspect, a method for cell reselection is provided. The method may be executed by a terminal device, or may be executed by a component (eg, a chip or a circuit) of the terminal device, without limitation.

[0007] The method includes: in a case where a service frequency point corresponding to a service cell is configured with a dedicated priority, if the signal quality of the service cell is less than or equal to a first threshold, triggering measurement of a first cell, the first cell including at least one of an inter-frequency cell and an inter-system cell, wherein the first cell is not configured with a dedicated priority and a downgraded priority, and the first threshold is greater than a minimum residence threshold; if the measurement result of the first cell meets a cell reselection condition, reselecting to the first cell.

[0008] In this application, "inter-frequency cell" and "inter-system cell" can be understood as neighboring cells of a terminal device. In a possible implementation, when a terminal device resides in a serving cell, it can receive a system message from the serving cell, which carries information about the inter-frequency cell and / or inter-system cell of the serving cell.

[0009] In the present application, "inter-frequency cell" means that the serving cell where the terminal device is currently located and the target cell to be measured are not on the same carrier frequency, then the target cell can be called the "inter-frequency cell" of the current serving cell.

[0010] In the present application, "different system cell" means that the serving cell where the terminal device is currently located and the target cell to be measured belong to different communication systems, and the target cell can be called the "different system cell" of the current serving cell.

[0011] In the present application, "no dedicated priority and downgraded priority are configured for the first cell" can be understood as no dedicated priority and downgraded priority are configured for the inter-frequency cell and / or inter-system cell of the terminal device.

[0012] In the present application, "the signal quality of the serving cell is less than or equal to the first threshold" can be understood as the signal quality of the serving cell has deteriorated, for example, the signal quality of the serving cell has deteriorated to the point where it affects the user service quality. Alternatively, it can be understood that the first threshold is used to determine whether the signal quality of the serving cell has deteriorated. For example, the first threshold is less than or equal to the threshold for starting measurement with equal low priority; for example, the first threshold is greater than the threshold for starting measurement with equal low priority; for another example, the first threshold is greater than the minimum residence threshold. For another example, the first threshold can be a predefined value.

[0013] In the present application, the signal quality of the serving cell has deteriorated, which can be understood as the signal quality of the serving cell is close to the minimum residence threshold, and the reference signal received quality (RSRQ) of the serving cell is less than or equal to a certain threshold value; or, the reference signal receiving power (RSRP) is less than or equal to a certain threshold value; or, the signal to interference plus noise ratio (SINR) is less than or equal to a certain threshold value. For example, the terminal device can receive a synchronization signal block (synchronization signal block) from the serving cell, measure the signal quality of the serving cell, and thus determine whether the signal quality of the current serving cell is close to the minimum residence threshold. For another example, the terminal device can measure the reference signal to determine whether the RSRP or RSRQ of the current serving cell meets the threshold value. Exemplarily, the terminal device may move to the edge of the current serving cell, or the terminal device may be blocked by other objects, causing the signal quality of the current serving cell to deteriorate.

[0014] The "first threshold" and "threshold value" mentioned in this application may be values ​​pre-configured according to actual conditions. For example, if it is generally determined that when RSRP is less than a certain value, it means that the signal quality of the current serving cell has deteriorated, then the "first threshold" or "threshold value" here may be this value. Exemplarily, the first threshold may be a value pre-determined by those skilled in the art based on experience.

[0015] In the present application, the "threshold for starting measurements with equal low priority" can be, for example, SnonIntraSearchP, or SnonIntraSearchQ, where "SnonIntraSearchP" specifies the Srxlev threshold (in dB) corresponding to the RSRP measured between NR frequencies and radio access technologies (radio access technology, RAT) (i.e., different frequencies / different systems); "SnonIntraSearchQ" specifies the Squal threshold (in dB) corresponding to the RSRQ measured between NR frequencies and RATs (i.e., different frequencies / different systems). For example, the threshold for starting measurements with equal low priority is usually 0 to 31 dB. Specifically, for "SnonIntraSearchP" or "SnonIntraSearchQ", please refer to the description in the technical specification (TS) 38331-H50 6.3.1.

[0016] In this application, the "minimum residence threshold" can be understood as the S value of the signal quality of the serving cell being equal to 0. In this application, the first threshold is greater than 0. This is because, under normal circumstances, if the first threshold does not meet the S criterion, that is, the first threshold is less than the minimum residence threshold, it can also be understood that when the first threshold is less than or equal to 0, the terminal device will trigger a cell search. The time required to reside in another cell with better signal quality through the cell search process is longer than the time required for direct cell reselection. This is because the terminal device needs to wait until the signal quality of the serving cell is less than or equal to the minimum residence threshold before starting the process. Therefore, in this application, it is proposed that before the terminal device triggers a cell search, the terminal device is allowed to directly enter the cell reselection process, which can reduce the waiting time of the terminal device, avoid long-term poor communication of the terminal device, and ensure the user's service experience.

[0017] This application emphasizes that when the signal quality of the serving cell is less than or equal to the first threshold, the terminal device can immediately trigger the measurement of the inter-frequency cell, or the terminal device can immediately trigger the measurement of the inter-system cell. This avoids the terminal device waiting until the signal quality of the serving cell deteriorates to the minimum resident threshold before starting the process of network loss and network re-search, reducing the waiting time of the terminal device, so that the terminal device can quickly reselect to an inter-frequency cell or inter-system cell with better signal quality, thereby ensuring the user's service experience.

[0018] Based on the above technical solution, in the present application, when there is no priority for heterofrequency points or heterosystem frequency points, when the signal quality of the current service cell is less than or equal to the first threshold, the measurement of heterofrequency cells or heterosystem cells of the service cell can be triggered, so that the terminal device can promptly reselect to a neighboring cell with better signal quality to ensure the user's service experience.

[0019] Optionally, in the present application, the terminal device may be pre-resident in the service cell.

[0020] In a possible implementation manner, when the first cell includes at least two cells, if the measurement results corresponding to the at least two cells respectively meet the cell reselection condition, the cell with the best signal quality in the measurement results is reselected.

[0021] Exemplarily, assuming that the first cell includes more than two inter-frequency cells, and the measured multiple inter-frequency cells all meet the reselection condition, the inter-frequency cell with the best signal quality is reselected. Exemplarily, assuming that the first cell includes more than two inter-system cells, and the measured multiple inter-system cells all meet the reselection condition, the inter-system cell with the best signal quality is reselected. Exemplarily, the first cell includes inter-frequency cells and inter-system cells, and assuming that the measured multiple cells all meet the reselection condition, the cell with the best signal quality is reselected.

[0022] In another possible implementation, if the terminal device measures multiple inter-frequency cells, it can reselect the inter-frequency small cell that completed the cell measurement first. Or, if the terminal device measures multiple inter-system cells, it can reselect the inter-system cell that completed the cell measurement first. Or, if the terminal device measures inter-frequency cells and inter-system cells, it can reselect the inter-frequency cell or inter-system cell that completed the cell measurement first.

[0023] In a possible implementation, the method includes: receiving a first signaling, where the first signaling is used to configure a dedicated priority of a service frequency corresponding to a service cell for a terminal device.

[0024] In another possible implementation, assume that the terminal device resides in a service cell #A1, the service frequency corresponding to the service cell is frequency A, and the dedicated priority of frequency B is received in the service cell #A1. Subsequently, the terminal device reselects a cell #B1 under frequency B. In this case, the terminal device is also configured with a dedicated priority in the service cell #B1 currently resides. At this time, it can be regarded as that the terminal device inherits the dedicated priority of the service frequency (frequency B) corresponding to the service cell (cell #B1) configured in the previous service cell #A1.

[0025] In a possible implementation, the first signaling is also used to configure a downgraded priority of a service frequency corresponding to a service cell for the terminal device.

[0026] In this application, the first signaling can simultaneously configure the dedicated priority and the de-prioritization of the service frequency for the terminal device. At this time, even if the common priority is configured for the hetero-frequency frequency and / or hetero-system frequency of the terminal device, the common priority of the hetero-frequency frequency and / or hetero-system frequency will be ignored, which is equivalent to the hetero-frequency frequency and / or hetero-system frequency having no priority.

[0027] In a possible implementation, the method also includes: receiving a second signaling, the second signaling is used to configure a general priority of a first frequency point corresponding to a first cell for a terminal device, the first frequency point includes at least one of an hetero-frequency frequency point and a hetero-system frequency point, the hetero-frequency frequency point is a frequency point corresponding to an hetero-frequency cell, and the hetero-system frequency point is a frequency point corresponding to an hetero-system cell.

[0028] It should be understood that, normally, the terminal device is configured with a general priority first and then with a dedicated priority. However, in the scenario where the terminal device re-residents from the service cell #A1 to the service cell #B1, the terminal device may inherit the dedicated priority configured in the service cell #A1. At this time, in the service cell #B1, it is equivalent to configuring the dedicated priority first and then configuring the general priority.

[0029] In a second aspect, a cell reselection method is provided. The method may be executed by a terminal device, or may be executed by a component of the terminal device (eg, a chip or a circuit), without limitation.

[0030] It should be noted that the beneficial effects achieved in the method of the second aspect that are the same as those achieved in the method of the first aspect are not repeated here.

[0031] The method includes: obtaining a first priority of a first frequency point, wherein the first frequency point includes at least one of an inter-frequency frequency point and an inter-system frequency point, the inter-frequency frequency point is a frequency point corresponding to an inter-frequency cell, the inter-system frequency point is a frequency point corresponding to an inter-system cell, and the first priority includes at least one of a dedicated priority and a downgraded priority; if the effective time corresponding to the first priority times out, and the general priority is not configured for the first frequency point, when the signal quality of the serving cell is less than or equal to a first threshold, triggering measurement of the first cell, the first cell includes at least one of an inter-frequency cell and an inter-system cell, and the first threshold is greater than a minimum residence threshold; if the measurement result of the first cell meets the cell reselection condition, reselecting to the first cell.

[0032] In a possible implementation manner, when the first cell includes at least two cells, if the measurement results corresponding to the at least two cells respectively meet the cell reselection condition, the cell with the best signal quality in the measurement results is reselected.

[0033] In a possible implementation manner, the method includes: receiving third signaling, where the third signaling is used to configure a first priority for a first frequency point.

[0034] In another possible implementation, for example, the dedicated priority and / or down-priority of the hetero-frequency point configured by the terminal device in the current serving cell may be obtained by inheriting the dedicated priority and / or down-priority of the hetero-frequency point configured in the cell where it previously resided. For another example, the dedicated priority and / or down-priority of the hetero-system frequency point configured by the terminal device in the current serving cell may be obtained by inheriting the dedicated priority and / or down-priority of the hetero-system frequency point configured in the cell where it previously resided.

[0035] In a possible implementation, the third signaling is also used to configure a dedicated priority for a serving frequency corresponding to the serving cell.

[0036] In the present application, if a dedicated priority and / or downgraded priority is configured for the hetero-frequency point of the terminal device, then "the effective time corresponding to the first priority has timed out and expired" refers to the timeout and expiration of the dedicated priority and / or downgraded priority of the hetero-frequency point configured for the terminal device; if a dedicated priority and / or downgraded priority is configured for the hetero-system frequency point of the terminal device, then "the effective time corresponding to the first priority has timed out and expired" refers to the timeout and expiration of the dedicated priority and / or downgraded priority of the hetero-system frequency point configured for the terminal device; if a dedicated priority and / or downgraded priority is configured for the hetero-frequency point of the terminal device, and, the terminal device is configured with a dedicated priority and / or downgraded priority for the hetero-system frequency point, then "the effective time corresponding to the first priority has timed out and expired" refers to the timeout and expiration of the dedicated priority and / or downgraded priority of the hetero-frequency point configured for the terminal device, and, the timeout and expiration of the dedicated priority and / or downgraded priority of the hetero-system frequency point configured for the terminal device.

[0037] In the present application, “the valid time corresponding to the first priority has expired” can be understood as that when the configured dedicated priority and / or downgraded priority is obtained, the terminal device will start a timer. Assuming that the duration of the timer is the first duration, if it exceeds the first duration, it means that the configured dedicated priority and / or downgraded priority has failed. At this time, it is equivalent to that the hetero-frequency points of the terminal device have no dedicated priority and / or downgraded priority, and / or, it is equivalent to that the hetero-system points of the terminal device have no dedicated priority and / or downgraded priority. Since the terminal device has not configured the universal priority of the hetero-frequency points and / or hetero-system points, it is equivalent to that the hetero-frequency points and / or hetero-system points of the terminal device have no priority. At this time, the present application proposes that when the signal quality of the serving cell is poor, the terminal device can actively trigger the measurement of the hetero-frequency cell or the measurement of the hetero-system cell.

[0038] In this application, if the network device configures a dedicated priority and / or downgraded priority for the terminal device for the hetero-frequency point, and the network device configures a dedicated priority and / or downgraded priority for the hetero-system frequency point of the terminal device, but the dedicated priority and / or downgraded priority times out, if the network device does not configure a universal priority for the hetero-frequency point and the hetero-system frequency point for the terminal device, it is equivalent to the hetero-frequency point and / or hetero-system frequency point of the terminal device having no priority. At this time, the present application proposes that when the signal quality of the serving cell is poor, the terminal device can actively trigger the measurement of the hetero-frequency cell or the measurement of the hetero-system cell, thereby reselecting to the hetero-frequency cell or the hetero-system cell, so that the terminal device can promptly reselect to the neighboring cell with better signal quality to ensure the user's service experience.

[0039] In a third aspect, a method for cell reselection is provided, which may be executed by a terminal device, or may also be executed by a component of the terminal device (eg, a chip or a circuit), without limitation.

[0040] The method includes: if the terminal device is not configured with the second priority of the first frequency point, when the signal quality of the serving cell is less than or equal to the first threshold, triggering the measurement of the first cell, wherein the first frequency point includes at least one of an inter-frequency frequency point and an inter-system frequency point, the second priority includes a dedicated priority, a general priority and a reduced priority, the first cell includes at least one of an inter-frequency cell and an inter-system cell, the first threshold is greater than the minimum residence threshold, the inter-frequency frequency point is the frequency point corresponding to the inter-frequency cell, and the inter-system frequency point is the frequency point corresponding to the inter-system cell; if the measurement result of the first cell meets the reselection condition, reselecting to the first cell.

[0041] This scenario can also be understood as that the hetero-frequency point of the terminal device is not configured with any priority, and the hetero-system frequency point of the terminal device is not configured with any priority. According to the existing scheme, when the signal quality of the service cell of the terminal device is poor, the terminal device will not trigger the measurement of the hetero-frequency cell, nor will it trigger the measurement of the hetero-system cell. However, in this application, if the hetero-frequency point and / or the hetero-system frequency point are not configured with dedicated priority, general priority and downgraded priority, it is proposed that when the signal quality of the service cell deteriorates, the measurement of the hetero-frequency cell or the measurement of the hetero-system cell can also be triggered, so that the terminal device can be timely reselected to the hetero-frequency cell or hetero-system cell with better signal quality to ensure the user's service experience.

[0042] In a possible implementation, the service frequency corresponding to the service cell of the terminal device is configured with a general priority.

[0043] In a possible implementation, a service frequency corresponding to a service cell of a terminal device is configured with a dedicated priority and / or a general priority.

[0044] In a possible implementation, a service frequency corresponding to a service cell of a terminal device is not configured with a dedicated priority.

[0045] In a fourth aspect, the present application proposes a communication device, which is used to execute the method of any one of the first to third aspects above. Specifically, the device may include units and / or modules, such as a transceiver unit and / or a processing unit, for executing the communication method proposed in the present application.

[0046] In a fifth aspect, a communication device is provided, the device comprising: at least one processor, configured to execute a computer program or instruction stored in a memory to perform the method of any one of the first to third aspects above. Optionally, the device further comprises a memory, configured to store a computer program or instruction. Optionally, the device further comprises a communication interface, and the processor reads the computer program or instruction stored in the memory through the communication interface.

[0047] In one implementation, the device is a functional communication device for implementing the communication method provided in the present application in a chip.

[0048] In another implementation, the device is a functional chip, chip system or circuit used to implement the communication method provided in the present application in a chip.

[0049] In a sixth aspect, the present application provides a processor, comprising: an input circuit, an output circuit, and a processing circuit. The processing circuit is used to receive a signal through the input circuit and transmit a signal through the output circuit, so that the processor executes the method of any one of the first to third aspects above.

[0050] In the specific implementation process, the processor can be one or more chips, the input circuit can be an input pin, the output circuit can be an output pin, and the processing circuit can be a transistor, a gate circuit, a trigger, and various logic circuits. The input signal received by the input circuit can be received and input by, for example, but not limited to, a transceiver, and the signal output by the output circuit can be, for example, but not limited to, output to a transmitter and transmitted by the transmitter, and the input circuit and the output circuit can be the same circuit, which is used as an input circuit and an output circuit at different times. The embodiments of the present application do not limit the specific implementation methods of the processor and various circuits.

[0051] For the operations such as sending and acquiring / receiving involved in the processor, unless otherwise specified, or unless they conflict with their actual function or internal logic in the relevant description, they can be understood as operations such as processor output, reception, input, etc., or as sending and receiving operations performed by the radio frequency circuit and antenna, and this application does not limit this.

[0052] In a seventh aspect, a processing device is provided, comprising a processor and a memory. The processor is used to read instructions stored in the memory, and can receive signals through a transceiver and transmit signals through a transmitter to execute the method of any one of the first to third aspects above.

[0053] Optionally, the number of the processors is one or more, and the number of the memories is one or more.

[0054] Optionally, the memory may be integrated with the processor, or the memory may be provided separately from the processor.

[0055] In the specific implementation process, the memory can be a non-transitory memory, such as a read-only memory (ROM), which can be integrated with the processor on the same chip or can be set on different chips respectively. The embodiments of the present application do not limit the type of memory and the setting method of the memory and the processor.

[0056] It should be understood that the related data interaction process, such as sending indication information, can be a process of outputting indication information from the processor, and receiving capability information can be a process of receiving input capability information by the processor. Specifically, the data output by the processor can be output to the transmitter, and the input data received by the processor can come from the transceiver. Among them, the transmitter and the transceiver can be collectively referred to as a transceiver.

[0057] The processing device in the sixth aspect may be one or more chips. The processor in the processing device may be implemented by hardware or by software. When implemented by hardware, the processor may be a logic circuit, an integrated circuit, etc.; when implemented by software, the processor may be a general-purpose processor implemented by reading software code stored in a memory, which may be integrated in the processor or located outside the processor and exist independently.

[0058] In an eighth aspect, a computer-readable storage medium is provided, wherein the computer-readable medium stores a program code for execution by a device, wherein the program code includes a method for executing any one of the first to third aspects described above.

[0059] In a ninth aspect, a computer program product comprising instructions is provided, which, when executed on a computer, enables the computer to execute the method of any one of the first to third aspects.

[0060] In a tenth aspect, a chip system is provided, comprising a processor for calling and running a computer program from a memory, so that a device equipped with the chip system executes a method of any one of the first to third aspects above.

[0061] In an eleventh aspect, a communication system is provided, the communication system comprising a terminal device and a network device, wherein the terminal device is used to execute any possible implementation method in the first aspect, or the terminal device is used to execute any possible implementation method in the second aspect, or the terminal device is used to execute any possible implementation method in the third aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] Figure 1 This is a schematic diagram of a scenario to which this application is applicable.

[0063] Figure 2 It is a schematic flow chart of a cell reselection method 200 provided in the present application.

[0064] Figure 3 It is a schematic flow chart of a cell reselection method 300 provided in the present application.

[0065] Figure 4 It is a schematic block diagram of a communication device 100 provided in the present application.

[0066] Figure 5 It is a schematic block diagram of a communication device 200 provided in the present application. DETAILED DESCRIPTION

[0067] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0068] In order to facilitate understanding of the technical solution provided by this application, the following first briefly introduces the relevant professional terms involved in this application.

[0069] 1. Cell reselection

[0070] "Cell reselection" refers to the process in which the terminal device selects the best cell to provide service signals by monitoring the signal quality of the neighboring cells and the current service cell in idle mode. When the signal quality and level of the neighboring cell meet the S criterion and certain reselection decision criteria, the terminal device will access the neighboring cell and reside there. The following mainly introduces inter-frequency cell reselection and inter-system cell reselection. Under normal circumstances, inter-frequency cell reselection and inter-system cell reselection need to start measurement based on frequency priority to perform reselection:

[0071] (1) Equal priority: When the Srxlev value corresponding to the RSRP of the serving cell or the Squal value corresponding to the RSRQ is lower than the threshold, the measurement of the neighboring cell is started; if the signal quality of the neighboring cell is better than that of the serving cell, reselection is started.

[0072] (2) High priority: Regardless of the quality of the serving cell, the terminal device will start measurement and calculate the signal quality of the neighboring cell. If it is higher than the threshold, the terminal device will start reselection.

[0073] (3) Low priority: When the RSRP or RSRQ of the serving cell is lower than the threshold, the terminal device starts measurement; calculates the signal quality of the neighboring cell. If the serving cell is lower than the threshold and the neighboring cell is higher than the threshold, the terminal device starts reselection.

[0074] Frequency priority can be configured through system message configuration, RRC Release dedicated signaling configuration, or inherited from the dedicated priority of other systems during reselection.

[0075] 2. Inter-frequency measurement and inter-system (inter radio access technology, IRAT) measurement

[0076] "Inter-frequency measurement" means that the service cell where the terminal device is currently located and the target cell to be measured are not on the same carrier frequency. "Inter-system" can be understood, for example, that the terminal device switches between the 5G system, 4G system, 2G or 3G system. "Inter-system measurement" means that the service cell where the terminal device is currently located and the target cell to be measured belong to different communication systems. It should be noted that "inter-frequency measurement" can be understood as measuring the inter-frequency cell currently serving the terminal device, hereinafter referred to as "inter-frequency measurement"; "inter-system measurement" can be understood as measuring the cell of an inter-system of the current service cell of the terminal device, hereinafter referred to as "inter-system measurement".

[0077] For example, if the broadcast message is configured with intra-system and inter-system frequencies and has corresponding priorities, if the priority of one of the carrier frequencies is higher than the frequency of the current service cell, the terminal device will perform measurements on the high-priority frequency.

[0078] Exemplarily, if the broadcast message configures the intra-system inter-frequency points and has corresponding priorities, for example, if the priority of a carrier frequency in the inter-frequency points is less than or equal to the frequency of the current serving cell, then if the serving cell is not configured with the trigger threshold SnonIntraSearchP or SnonIntraSearchQ for inter-frequency measurement, or S servingcell ≤ the trigger threshold SnonIntraSearchP for inter-frequency measurement, or, Sservingcell≤the trigger threshold SnonIntraSearchQ for inter-frequency measurement, the terminal device performs measurement of inter-frequency points.

[0079] Exemplarily, if the inter-system frequency is configured in the broadcast message and has a corresponding priority, for example, if the priority of a carrier frequency in the inter-system frequency is lower than the frequency of the current serving cell, then if the serving cell is not configured with the trigger threshold SnonIntraSearchP or SnonIntraSearchQ for inter-system measurement, or S servingcell ≤ the trigger threshold SnonIntraSearchP for heterogeneous system measurement, or, Sservingcell≤the trigger threshold SnonIntraSearchQ for heterogeneous system measurement, the terminal device performs the measurement of the heterogeneous system frequency point.

[0080] 3. Absolute priority, general priority, dedicated priority, and reduced priority

[0081] The "Cell Reselection Priority" parameter is used to indicate the absolute priority of cell reselection for the service frequency. "0" indicates the lowest priority and "7" indicates the highest priority. This parameter is a network planning parameter and needs to be uniformly planned between various frequencies. The absolute priorities of cell reselection for frequencies of different systems cannot be the same. It can also be understood that the priorities of frequencies between different systems cannot be the same.

[0082] "General priority" refers to the frequency priority specified in the system message.

[0083] "Dedicated priority" refers to the priority carried by the radio resource control release (RRCrelease) message or inherited from other systems. Among them, "dedicated priority" can also be called "dedicated priority", and is uniformly referred to as "dedicated priority" in the following description in this application.

[0084] "Deprioritization" means deprioritization. The network device can use the "deprioritisationReq" field to reduce the priority of certain frequencies to the lowest.

[0085] 4. S criterion (Srxlev)

[0086] The "S criterion (Srxlev)" in this application can be described with reference to the definition of the existing S criterion. Normally, the S criterion is used for cell selection or cell reselection. The calculation formula is: Srxlev = Qrxlevmeas-Qrxlevmin-Pcompensation; wherein, the current service cell receiving power measured by Qrxlevmeas refers to the reference signal receiving power (RSRP) value of the P-CCPCH channel; Qrxlevmin is the minimum receiving power of the current service cell. This parameter can be read from the system broadcast message. Generally, the terminal device needs to perform certain arithmetic conversion after reading it; Pcompensation is the compensation value, which can be calculated by the following formula: Pcompensation = max (UE_TXP-WR_MAX_RACH-P_MAX, 0); wherein, UE_TXPWR_MAX_RACH is the maximum transmit power of the terminal on RACH when making random access, which is sent by the system broadcast message and is generally set to 0; P_MAX is the maximum nominal transmit power of the terminal, which is determined by the capabilities of the terminal device.

[0087] The wireless communication systems to which the embodiments of the present application can be applied include, but are not limited to: global system of mobile communication (GSM) system, long term evolution (LTE) frequency division duplex (FDD) system, LTE time division duplex (TDD), LTE system, advanced long term evolution (LTE-Advanced, LTE-A) system, 5G communication system, next generation communication system (for example, 6G communication system), a fusion system of multiple access systems, or an evolution system.

[0088] 5. Minimum dwell threshold

[0089] The "minimum residence threshold" in this application can be understood as the minimum threshold that the terminal device can reside in the serving cell. If it is less than this threshold, the process of "losing the network" and "re-searching the network" will be carried out. In this application, the "minimum residence threshold" can be understood as the S value of the signal quality of the serving cell is equal to 0. Normally, if the first threshold does not meet the S criterion, that is, when the S value is less than 0, the terminal device will trigger the re-search network process. For example, if the signal quality of the current serving cell is less than or equal to the minimum residence threshold, the terminal device will not reside in the cell, and the process of losing the network and re-searching the network will be carried out.

[0090] The technical solution provided in the present application can also be applied to machine type communication (MTC), long term evolution-machine (LTE-M), device to device (D2D) network, machine to machine (M2M) network, Internet of things (IoT) network or other networks. Among them, IoT network can include vehicle networking, for example. Among them, the communication mode in the vehicle networking system is collectively referred to as vehicle to other devices (vehicle to X, V2X, X can represent anything), for example, the V2X can include: vehicle to vehicle (V2V) communication, vehicle to infrastructure (V2I) communication, vehicle to pedestrian (V2P) communication or vehicle to network (V2N) communication, etc.

[0091] The terminal devices involved in the embodiments of the present application may include various access terminals, mobile devices, user terminals or user devices with wireless communication functions. For example, the terminal device may be user equipment (UE), such as a mobile phone, a tablet computer (pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, etc. The terminal device may also be a wireless terminal in industrial control, a machine type communication (MTC) terminal, a customer premise equipment (CPE), a wireless terminal in self-driving, a wireless terminal in remote medical, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a smart home, a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolved public land mobile network (PLMN), etc.

[0092] The network device (for example, a wireless access network device) involved in the embodiments of the present application may be an access device for a terminal device to access the mobile communication system wirelessly. The wireless access network device may be: a base station, an evolved node B (eNB), a home base station, an access point (AP) in a wireless fidelity (WiFi) system, a wireless relay node, a wireless backhaul node, a transmission point (TP) or a transmission and reception point (TRP), a macro base station or a micro base station, a high-frequency base station, etc. The wireless access network device may also be a next generation node B (gNB) in an NR system, or may also be a component or part of a base station, such as a central unit (CU), a distributed unit (DU) or a baseband unit (BBU). It should be understood that in the embodiments of the present application, the specific technology and specific device form adopted by the wireless access network device are not limited. In the present application, the wireless access network device is referred to as a network device. If there is no special explanation, in the present application, the network device refers to the wireless access network device. In the present application, the network device may refer to the network device itself, or may refer to a chip used in the network device to perform wireless communication processing functions.

[0093] In mobile communication systems, "measurement" is a common and important process. For example, when the terminal device is in an idle state, the terminal device determines whether to reselect to the neighboring cell by measuring the signal quality of the serving cell and the neighboring cell. In current technology, for hetero-frequency and hetero-system, the terminal device will only start measurement for hetero-frequency cells configured with hetero-frequency points with priority or hetero-system cells configured with hetero-system points with priority. Normally, the base station can configure the general priority of the service frequency corresponding to the current serving cell for the terminal device through a system message, and the base station can configure the dedicated priority of the service frequency corresponding to the current serving cell for the terminal device through proprietary signaling. In one possible scenario, if the base station configures a dedicated priority for the service frequency of the terminal device (or, at the same time, also configures a downgraded priority for the service frequency of the terminal device), then the general priority of the hetero-frequency points of the service frequency of the terminal device and the general priority of the hetero-system points will be ignored. At this time, the hetero-frequency points and hetero-system points will be treated as having no priority. In another possible scenario, if the base station does not configure the general priority of the heterofrequency points for the terminal device, nor does it configure the general priority of the heterosystem points for the terminal device, and the dedicated priority and / or downgraded priority of the heterofrequency points configured by the base station for the terminal device, and the dedicated priority and / or downgraded priority of the heterosystem points configured by the base station for the terminal device have timed out, then the heterofrequency points and heterosystem points will also be treated as having no priority. For heterofrequency points and heterosystem points, if there is no priority, the terminal device will not start the measurement of heterofrequency cells and heterosystem cells. It can also be understood that the heterofrequency points corresponding to the heterofrequency cells or the heterosystem points corresponding to the heterosystem cells will not be used as the target frequencies for the terminal device to reselect. At this time, if the signal quality of the terminal device's service frequency is poor, the terminal device cannot reselect to other cells in time, resulting in a long-term poor signal of the terminal device, affecting the user's service experience.

[0094] Figure 1 This is a schematic diagram of a scenario applicable to this application, such as Figure 1As shown, it is assumed that the terminal device resides on a cell #A of base station #1, and base station #2 can provide the terminal device with a heterogeneous frequency and heterogeneous system network. For example, base station #2 can provide the terminal device with a network of another standard different from that of base station #1. If the terminal device determines that the priority of heterogeneous frequency points or the priority of heterogeneous system frequency points is not configured for the service cell #A, when the terminal device measures that the signal quality of the current service cell #A is poor, the measurement of heterogeneous frequency points and the measurement of heterogeneous system frequency points will not be started, resulting in the terminal device not measuring other heterogeneous frequency cells on base station #1, or, it is also unable to measure heterogeneous system cells on base station #1. For example, the terminal device cannot measure heterogeneous frequency cells or heterogeneous system cells covered by base station #2. Assuming that the base station does not configure the same frequency cell for the terminal device or there is interference in the same frequency cell, the terminal device cannot reselect to other heterogeneous frequency cells or heterogeneous system cells in time, thereby affecting the user's service experience.

[0095] In view of this, the present application proposes a method for cell reselection, in which, if the terminal device determines that the inter-frequency frequency point and / or the inter-system frequency point has no priority, when the signal quality of the current serving cell is less than or equal to the first threshold, it can actively and immediately trigger the measurement of the inter-frequency cell of the serving cell or the measurement of the inter-system cell, so that the terminal device can promptly reselect the inter-frequency cell or inter-system cell with better signal quality, thereby ensuring the user's service experience.

[0096] Figure 2 is a schematic flow chart of a cell reselection method 200 provided in the present application, such as Figure 2 As shown, the method includes:

[0097] 210, the terminal device resides in the service cell.

[0098] In the present application, the neighboring cell of the serving cell is the first cell, and the first cell includes at least one of an inter-frequency cell and an inter-system cell.

[0099] In the present application, "inter-frequency cell" means that the serving cell where the terminal device is currently located and the target cell to be measured are not on the same carrier frequency, then the target cell can be called the "inter-frequency cell" of the current serving cell.

[0100] In the present application, "different system cell" means that the serving cell where the terminal device is currently located and the target cell to be measured belong to different communication systems, and the target cell can be called the "different system cell" of the current serving cell.

[0101] 220. When a service frequency corresponding to a service cell is configured with a dedicated priority, if the signal quality of the service cell is less than or equal to a first threshold, the terminal device triggers measurement of the first cell, wherein the first cell is not configured with a dedicated priority and a downgraded priority, and the first threshold is greater than the minimum residence threshold.

[0102] In this application, "inter-frequency cell" and "inter-system cell" can be understood as neighboring cells of a terminal device. For example, in a possible implementation, when a terminal device resides in a serving cell, it can receive a system message from the serving cell, which carries information about the inter-frequency cell and / or inter-system cell of the serving cell.

[0103] In the present application, the first threshold is used to determine whether the signal quality of the serving cell deteriorates.

[0104] In the present application, "the signal quality of the serving cell is less than or equal to the first threshold" can be understood as the signal quality of the serving cell has deteriorated, for example, the signal quality of the serving cell has deteriorated to the point where it affects the user service quality. Alternatively, it can also be understood that the first threshold is used to determine whether the signal quality of the serving cell has deteriorated. For example, the first threshold is less than or equal to the threshold for starting measurements with equal low priority; for example, the first threshold is greater than the model for starting measurements with equal low priority; for another example, the first threshold is greater than the minimum residence threshold. For another example, the first threshold may be a predefined value.

[0105] In the present application, the signal quality of the serving cell has deteriorated, which can be understood as the signal quality of the serving cell is close to the minimum resident threshold; or, the reference signal received quality (RSRQ) of the serving cell is less than or equal to a certain threshold value; or, the reference signal receiving power (RSRP) is less than or equal to a certain threshold value; or, the signal to interference plus noise ratio (SINR) is less than or equal to a certain threshold value. For example, the terminal device can receive a synchronization signal block (synchronization signal block) from the serving cell, measure the signal quality of the serving cell, and determine whether the signal quality of the current serving cell is close to the minimum resident threshold. For another example, the terminal device can measure the reference signal to determine whether the RSRP or RSRQ of the current serving cell meets the threshold value. Exemplarily, the terminal device may move to the edge of the current serving cell, or the terminal device may be blocked by other objects, causing the signal quality of the current serving cell to deteriorate.

[0106] The "first threshold" and "threshold value" mentioned in this application may be values ​​pre-configured according to actual conditions. For example, if it is generally determined that when RSRP is less than a certain value, it means that the signal quality of the current serving cell has deteriorated, then the "first threshold" or "threshold value" here may be this value. Exemplarily, the first threshold may be a value pre-determined by those skilled in the art based on experience (i.e., the first threshold is a predefined value).

[0107] In the present application, the "low priority start measurement threshold" may be, for example, SnonIntraSearchP, or SnonIntraSearchQ.

[0108] Among them, "SnonIntraSearchP" specifies the Srxlev threshold (in dB) corresponding to the RSRP measured between NR frequencies and between radio access technologies (RAT) (i.e., different frequencies / different systems); "SnonIntraSearchQ" specifies the Squal threshold (in dB) corresponding to the RSRQ measured between NR frequencies and between RATs (i.e., different frequencies / different systems). For example, the threshold for starting measurements with equal low priority is usually 0 to 31 dB. Specifically, for "SnonIntraSearchP" or "SnonIntraSearchQ", please refer to the description in the technical specification (TS) 38331H50 6.3.1.

[0109] In this application, the "minimum residence threshold" can be understood as the S value of the signal quality of the serving cell being equal to 0. In this application, the first threshold is greater than 0. This is because, under normal circumstances, if the first threshold does not meet the S criterion, that is, the first threshold is less than the minimum residence threshold, it can also be understood that when the first threshold is less than or equal to 0, the terminal device will trigger a cell search. The time required to reside in another cell with better signal quality through the cell search process is longer than the time required for direct cell reselection. This is because the terminal device needs to wait until the signal quality of the serving cell is less than or equal to the minimum residence threshold before starting the process. Therefore, in this application, it is proposed that before the terminal device triggers a cell search, the terminal device is allowed to directly enter the cell reselection process, which can reduce the waiting time of the terminal device, avoid long-term poor communication of the terminal device, and ensure the user's service experience.

[0110] In the present application, the terminal device can obtain the dedicated priority of the service frequency corresponding to the service cell in the following manner.

[0111] In a possible implementation, the first signaling is also used to configure a dedicated priority level of a service frequency corresponding to a service cell for the terminal device.

[0112] For example, the terminal device may receive RRCRelease signaling (an example of the first signaling) from the base station, which may configure a dedicated priority level for the service frequency corresponding to the service cell for the terminal device.

[0113] For another example, suppose that the terminal device resides in a service cell #A1, and the service frequency corresponding to the service cell is frequency A. The dedicated priority of frequency B is received in the service cell #A1. Subsequently, the terminal device reselects a cell #B1 under frequency B. In this case, the terminal device is also configured with a dedicated priority in the service cell #B1 currently resides. At this time, it can be regarded as that the terminal device has inherited the dedicated priority of the service frequency (frequency B) corresponding to the service cell (cell #B1) configured in the previous service cell #A1.

[0114] In this application, in the following scenarios, the terminal device will determine that the hetero-frequency point corresponding to the hetero-frequency cell has no configuration priority or the hetero-system point corresponding to the hetero-system cell has no priority. In the scheme provided in this application, if the terminal device determines that the hetero-frequency point or the hetero-system point has no priority, when the signal quality of the serving cell deteriorates, the measurement of the hetero-frequency cell or the measurement of the hetero-system cell will be triggered.

[0115] Scenario 1:

[0116] In a possible implementation, the network device configures a dedicated priority of the service frequency corresponding to the service cell for the terminal device. At this time, regardless of whether the network device configures a general priority for the inter-frequency frequency corresponding to the inter-frequency cell, the terminal device will consider that the inter-frequency frequency has no priority. At this time, when the signal quality of the service cell is less than or equal to the first threshold, the measurement of the inter-frequency cell can be actively triggered.

[0117] In another possible implementation, the network device configures a dedicated priority for the service frequency corresponding to the service cell for the terminal device. At this time, regardless of whether the network device configures a general priority for the heterogeneous frequency corresponding to the heterogeneous cell, the terminal device will consider that the heterogeneous frequency has no priority. At this time, when the signal quality of the service cell is less than or equal to the first threshold, the measurement of the heterogeneous cell can be actively triggered.

[0118] Scenario 2:

[0119] In a possible implementation, the network device configures a dedicated priority of the service frequency corresponding to the service cell for the terminal device, and at the same time, the network device also configures a reduced priority of the service frequency corresponding to the service cell for the terminal device. At this time, regardless of whether the network device configures a general priority for the inter-frequency point corresponding to the inter-frequency cell, the terminal device will consider that the inter-frequency point has no priority. At this time, when the signal quality of the service cell is less than or equal to the first threshold, the measurement of the inter-frequency cell can be actively triggered.

[0120] In another possible implementation, the network device configures a dedicated priority for the service frequency corresponding to the service cell for the terminal device. At the same time, the network device also configures a reduced priority for the service frequency corresponding to the service cell for the terminal device. At this time, regardless of whether the network device configures a general priority for the heterogeneous frequency corresponding to the heterogeneous cell, the terminal device will consider that the heterogeneous frequency has no priority. At this time, when the signal quality of the service cell is less than or equal to the first threshold, the measurement of the heterogeneous cell can be actively triggered.

[0121] For example, in the above scenario one or scenario two, assume that the terminal device receives a second signaling from the network device, and the second signaling is used to configure a general priority for the hetero-frequency frequencies corresponding to the hetero-frequency cells for the terminal device. At this time, although the network device configures a general priority for the hetero-frequency frequencies of the terminal device, the terminal device also believes that the hetero-frequency frequencies have no priority.

[0122] For another example, in the above scenario one or scenario two, assume that the terminal device receives a second signaling from the network device, and the second signaling is used to configure a general priority for the heterosystem frequency corresponding to the heterofrequency cell for the terminal device. At this time, although the network device configures a general priority for the heterosystem frequency of the terminal device, the terminal device also believes that the heterosystem frequency has no priority.

[0123] 230. If the measurement result of the first cell meets the cell reselection condition, reselect to the first cell.

[0124] The above step 230 can also be understood as, if the measurement result of the inter-frequency cell meets the cell reselection condition, the terminal device reselects to the inter-frequency cell, or; if the measurement result of the inter-system cell meets the cell reselection condition, the terminal device reselects to the inter-system cell.

[0125] In a possible implementation manner, when the first cell includes at least two cells, if the measurement results corresponding to the at least two cells respectively meet the cell reselection condition, the cell with the best signal quality in the measurement results is reselected.

[0126] Exemplarily, assuming that the first cell includes more than two inter-frequency cells, and the measured multiple inter-frequency cells all meet the reselection condition, the inter-frequency cell with the best signal quality is reselected. Exemplarily, assuming that the first cell includes more than two inter-system cells, and the measured multiple inter-system cells all meet the reselection condition, the inter-system cell with the best signal quality is reselected. Exemplarily, the first cell includes inter-frequency cells and inter-system cells, and assuming that the measured multiple cells all meet the reselection condition, the cell with the best signal quality is reselected.

[0127] In another possible implementation, if the terminal device measures multiple inter-frequency cells, it can reselect the inter-frequency small cell that completed the cell measurement first. Or, if the terminal device measures multiple inter-system cells, it can reselect the inter-system cell that completed the cell measurement first. Or, if the terminal device measures inter-frequency cells and inter-system cells, it can reselect the inter-frequency cell or inter-system cell that completed the cell measurement first.

[0128] Specifically, for the reselection conditions of the inter-frequency cell or the inter-system cell, please refer to Section 5.2.4.5 and Section 5.2.4.6 of the technical specification (TS) 38304, and Section 5.2.4.5 and Section 5.2.4.6 of TS36304, which will not be described in detail.

[0129] According to the existing process, if the hetero-frequency points and hetero-system frequencies have no priority, the terminal device will eventually perform a re-network search process. In the present application, when the hetero-frequency points or hetero-system frequencies have no priority, when the signal quality of the current serving cell is less than or equal to the first threshold, the measurement of the hetero-frequency cell or hetero-system measurement of the serving cell can be triggered, thereby performing a cell reselection process. The re-network search process takes a longer time than the cell reselection process. Therefore, the solution of the present application can enable the terminal device to promptly reselect a neighboring cell with better signal quality, thereby ensuring the user's service experience.

[0130] Figure 3 3 is a schematic flow chart of a cell reselection method 300 provided in the present application. It should be understood that the same steps in method 300 as those in method 200 can be specifically referred to the description of the corresponding steps in method 200. Method 300 mainly describes the differences from method 200, such as Figure 3 As shown, the method includes:

[0131] 310, the terminal device resides in the service cell.

[0132] In the present application, the neighboring cell of the serving cell is the first cell, and the first cell includes at least one of an inter-frequency cell and an inter-system cell.

[0133] 320. The terminal device obtains a first priority of a first frequency point, wherein the first frequency point includes at least one of an inter-frequency frequency point and an inter-system frequency point, the inter-frequency frequency point is a frequency point corresponding to an inter-frequency cell, the inter-system frequency point is a frequency point corresponding to an inter-system cell, and the first priority point includes at least one of a dedicated priority point and a reduced priority point.

[0134] The above step 320 can also be understood as the terminal device obtaining the dedicated priority and / or downgraded priority of the hetero-frequency frequency point, and / or the terminal device obtaining the dedicated priority and / or downgraded priority of the hetero-system frequency point, the hetero-frequency frequency point is the frequency point corresponding to the hetero-frequency cell, and the hetero-system frequency point is the frequency point corresponding to the hetero-system cell.

[0135] For example, the terminal device may receive RRCRelease signaling (an example of the third signaling) from the base station, which may configure a dedicated priority and / or downgrade priority of an inter-frequency point for the terminal device. For another example, the terminal device may receive RRCRelease signaling (an example of the third signaling) from the base station, which may configure a dedicated priority and / or downgrade priority of an inter-system frequency point for the terminal device.

[0136] For another example, the dedicated priority and / or downgraded priority of the hetero-frequency point configured by the terminal device in the current serving cell may be obtained by inheriting the dedicated priority and / or downgraded priority of the hetero-frequency point configured in the cell where it previously resided. For another example, the dedicated priority and / or downgraded priority of the hetero-system frequency point configured by the terminal device in the current serving cell may be obtained by inheriting the dedicated priority and / or downgraded priority of the hetero-system frequency point configured in the cell where it previously resided.

[0137] Scene 3

[0138] 330. If the valid time corresponding to the first priority times out and the general priority is not configured for the first frequency point, the measurement of the first cell is triggered when the signal quality of the serving cell is less than or equal to the first threshold, and the first threshold is greater than the minimum residence threshold.

[0139] The above step 330 can also be understood as, if the effective time corresponding to the dedicated priority and / or downgraded priority times out, and the terminal device is not configured with the general priority of the hetero-frequency point and the general priority of the hetero-system frequency point, when the signal quality of the serving cell is less than or equal to the first threshold, the terminal device triggers the measurement of the hetero-frequency cell, or the terminal device triggers the measurement of the hetero-system cell.

[0140] In the present application, the first threshold is used to determine whether the signal quality of the serving cell deteriorates.

[0141] In this scenario, the network device configures a dedicated priority and / or down-priority for the hetero-frequency point for the terminal device, and / or the network device configures a dedicated priority and / or down-priority for the hetero-system frequency point for the terminal device, but if the dedicated priority and / or down-priority times out, and the network device does not configure a common priority for the hetero-frequency point and the hetero-system frequency point, it is equivalent to the hetero-frequency point and the hetero-system frequency point of the terminal device having no priority. The present application proposes that, when the signal quality of the serving cell is less than or equal to the first threshold, the terminal device triggers the measurement of the hetero-frequency cell, or triggers the measurement of the hetero-system cell.

[0142] Scene 4

[0143] In a possible implementation, the network device also configures a dedicated priority and / or down-priority of the service frequency corresponding to the service cell for the terminal device. At this time, the inter-frequency frequency and the service frequency of the terminal device are configured with dedicated priorities, and the network device does not configure a general priority of the inter-frequency frequency for the terminal device (or, further, the network device also configures a general priority for the service frequency of the terminal device). If the effective time corresponding to the dedicated priority and / or down-priority times out, it is equivalent to that the inter-frequency frequency of the terminal device has no priority. When the signal quality of the service cell is less than or equal to the first threshold, the measurement of the inter-frequency cell is triggered.

[0144] In a possible implementation, the third signaling is used to configure a dedicated priority and / or downgraded priority for the service frequency corresponding to the service cell for the terminal device. At this time, the heterosystem frequency of the terminal device and the service frequency are configured with dedicated priorities, and the network device does not configure a general priority for the heterosystem frequency for the terminal device (or, further, the network device also configures a general priority for the service frequency of the terminal device). If the effective time corresponding to the dedicated priority and / or downgraded priority times out, it is equivalent to that the heterosystem frequency of the terminal device has no priority. When the signal quality of the service cell is less than or equal to the first threshold, the measurement of the heterosystem cell is triggered.

[0145] In a possible implementation, the third signaling is used to configure a dedicated priority and / or down-priority for the service frequency corresponding to the service cell for the terminal device. At this time, the inter-frequency frequency, inter-system frequency, and service frequency of the terminal device are all configured with dedicated priority and / or down-priority, and the network device does not configure the general priority of the inter-frequency frequency and the general priority of the inter-system frequency for the terminal device (or, further, the network device also configures the general priority for the service frequency of the terminal device). If the effective time corresponding to the dedicated priority and / or down-priority times out, it is equivalent to that the inter-frequency frequency and the inter-frequency frequency of the terminal device have no priority. When the signal quality of the service cell is less than or equal to the first threshold, the measurement of the inter-frequency cell or the measurement of the inter-system cell is triggered.

[0146] In the present application, if a dedicated priority and / or downgraded priority is configured for the hetero-frequency point of the terminal device, then "the effective time corresponding to the dedicated priority and / or downgraded priority has timed out and expired", refers to the timeout and expiration of the dedicated priority and / or downgraded priority of the hetero-frequency point configured for the terminal device; if a dedicated priority and / or downgraded priority is configured for the hetero-system frequency point of the terminal device, then "the effective time corresponding to the dedicated priority and / or downgraded priority has timed out and expired", refers to the timeout and expiration of the dedicated priority and / or downgraded priority of the hetero-system frequency point configured for the terminal device; if a dedicated priority and / or downgraded priority is configured for the hetero-frequency point of the terminal device, and, the terminal device is configured with a dedicated priority and / or downgraded priority for the hetero-system frequency point, then "the effective time corresponding to the dedicated priority and / or downgraded priority has timed out and expired", refers to the timeout and expiration of the dedicated priority and / or downgraded priority of the hetero-frequency point configured for the terminal device, and, the timeout and expiration of the dedicated priority and / or downgraded priority of the hetero-system frequency point configured for the terminal device.

[0147] In the present application, "the effective time corresponding to the dedicated priority and / or downgraded priority has expired" can be understood as that when the configured dedicated priority and / or downgraded priority is obtained, the terminal device will start a timer. Assuming that the duration of the timer is the first duration, if it exceeds the first duration, it means that the configured dedicated priority and / or downgraded priority has expired. At this time, it is equivalent to that the hetero-frequency point of the terminal device has no dedicated priority and / or downgraded priority, and the hetero-system frequency point of the terminal device has no dedicated priority and / or downgraded priority. If the network device does not configure the terminal device with a universal priority of the hetero-frequency point and the hetero-system frequency point, at this time, the present application proposes that when the signal quality of the serving cell is less than the first threshold, the terminal device can actively and immediately trigger the measurement of the hetero-frequency cell or the measurement of the hetero-system cell.

[0148] Among them, the relevant explanation about the "first threshold" in step 330 can be found in the relevant description of step 230 in method 200, and will not be described in detail.

[0149] 340, if the measurement result of the first cell meets the cell reselection condition, reselect to the first cell

[0150] The above step 340 can also be understood as reselecting to the inter-frequency cell if the measurement result of the inter-frequency cell meets the cell reselection condition, or reselecting to the inter-system cell if the measurement result of the inter-system cell meets the cell reselection condition.

[0151] Specifically, the description of cell reselection can refer to the relevant description of step 240 in method 200, which will not be described in detail.

[0152] Based on the above technical solution, in the present application, when there is no priority for heterofrequency points or heterosystem frequency points, when the signal quality of the current service cell is less than or equal to the first threshold, the measurement of heterofrequency cells of the service cell or the measurement of heterosystem cells can be triggered, so that the terminal device can promptly reselect to the heterofrequency or heterosystem neighboring cell with better signal quality, thereby ensuring the user's service experience.

[0153] The above four scenarios all take into account the case where a dedicated priority and / or downgrade is configured for the service frequency corresponding to the service cell, or a dedicated priority and / or downgrade is configured for the hetero-frequency frequency corresponding to the hetero-frequency cell, and a dedicated priority and / or downgrade is configured for the hetero-system frequency corresponding to the hetero-system cell but the dedicated priority and / or downgrade has timed out. It is proposed that when the signal quality of the service cell is poor, the terminal device can trigger the measurement of the hetero-frequency cell or trigger the measurement of the hetero-system cell. In addition, the present application also takes into account that in the following scenario five, when the signal quality of the service cell is poor, the terminal device can trigger the measurement of the hetero-frequency cell or trigger the measurement of the hetero-system cell.

[0154] Scene 5

[0155] If the terminal device is not configured with the second priority of the first frequency point, when the signal quality of the serving cell is less than or equal to the first threshold, the measurement of the first cell is triggered, wherein the first frequency point includes at least one of an hetero-frequency frequency point and a hetero-system frequency point, the second priority includes a dedicated priority, a general priority and a reduced priority, the first cell includes at least one of an hetero-frequency cell and a hetero-system cell, the first cell is configured for the serving cell, the hetero-frequency frequency point is the frequency point corresponding to the hetero-frequency cell, the hetero-system frequency point is the frequency point corresponding to the hetero-system cell, and the first threshold is greater than the minimum residence threshold; if the measurement result of the first cell meets the reselection condition, reselect to the first cell.

[0156] The above scheme can also be understood as, if the terminal device is not configured with a dedicated priority, a general priority and a reduced priority for a heterofrequency point, and / or the terminal device is not configured with a dedicated priority, a general priority and a reduced priority for a heterosystem frequency point, when the signal quality of the serving cell is less than or equal to the first threshold, the measurement of the heterofrequency cell is triggered, or the measurement of the heterosystem cell is triggered, wherein the neighboring cells of the service cell of the terminal device include heterofrequency cells and / or heterosystem cells, the heterofrequency point is the frequency point corresponding to the heterofrequency cell, and the heterosystem frequency point is the frequency point corresponding to the heterosystem cell; if the measurement result of the heterofrequency cell meets the cell reselection condition, the heterofrequency cell is reselected, or; if the measurement result of the heterosystem cell meets the cell reselection condition, the heterosystem cell is reselected.

[0157] Optionally, the service frequency corresponding to the service cell of the terminal device is configured with a general priority.

[0158] Optionally, the service frequency corresponding to the service cell of the terminal device is configured with a dedicated priority.

[0159] Optionally, the service frequency corresponding to the service cell of the terminal device is not configured with a dedicated priority.

[0160] This scenario can also be understood as that the hetero-frequency point of the terminal device is not configured with any priority, and the hetero-system frequency point of the terminal device is not configured with any priority. According to the existing scheme, when the signal quality of the service cell of the terminal device is poor, the terminal device will not trigger the measurement of the hetero-frequency cell, nor will it trigger the measurement of the hetero-system cell. In this application, if the hetero-frequency point and the hetero-system frequency point are not configured with dedicated priority, general priority and reduced priority, it is proposed that when the signal quality of the service cell deteriorates, the measurement of the hetero-frequency cell or the measurement of the hetero-system cell can also be triggered, so that the terminal device can be timely reselected to the hetero-frequency cell or hetero-system cell with better signal quality to ensure the user's service experience.

[0161] It can be understood that the term "and / or" in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0162] Those skilled in the art should be aware that, in combination with the units and algorithm steps of each example described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is performed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0163] The embodiment of the present application can divide the functional modules of the communication device according to the above method example. For example, each functional module can be divided corresponding to each function, or two or more functions can be integrated into one processing module. The above integrated module can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the embodiment of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. The following is an example of dividing each functional module corresponding to each function.

[0164] Figure 4 is a schematic block diagram of a communication device 100 provided in an embodiment of the present application. Figure 4 As shown, the communication device 100 may include: a processing unit 110 and a transceiver unit 120 .

[0165] The above modules are respectively used to execute the steps in the above cell reselection method 200 and method 300, which will not be described in detail here.

[0166] It should also be understood that the communication device 100 herein is embodied in the form of functional units. The term "unit" herein may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (e.g., a shared processor, a dedicated processor, or a group processor, etc.) and a memory for executing one or more software or firmware programs, a combined logic circuit, and / or other suitable components that support the described functionality.

[0167] The communication device 100 of each of the above schemes has the function of implementing the corresponding steps of the above method 200 and method 300. The function can be implemented by hardware, or by hardware executing the corresponding software implementation. The hardware or software includes one or more modules corresponding to the above functions; for example, the processing unit unit can be replaced by a processor to respectively perform the transceiver operations and related processing operations in each method embodiment. In addition, the processing unit can be a processing circuit.

[0168] It should be pointed out that Figure 4The communication device in the embodiment may be the communication device in the aforementioned method, or may be a chip or chip system of the communication device, such as a system on chip (SoC). The processing unit is a processor or microprocessor or integrated circuit integrated on the chip. This is not limited here.

[0169] Figure 5 1 is a schematic block diagram of another communication device 200 provided in an embodiment of the present application. As shown in the figure, the device 200 includes: at least one processor 210. The processor 210 is coupled to the memory and is used to execute instructions stored in the memory to send signals and / or receive signals. Optionally, the device 200 also includes a memory 230 for storing instructions. Optionally, the device 200 also includes a transceiver 220, and the processor 210 controls the transceiver 220 to send signals and / or receive signals.

[0170] It should be understood that the processor 210 and the memory 230 can be combined into one processing device, and the processor 210 is used to execute the program code stored in the memory 230 to implement the above functions. In specific implementation, the memory 230 can also be integrated into the processor 210, or independent of the processor 210.

[0171] It should also be understood that the transceiver 220 may include a transceiver (or receiver) and a transmitter (or transmitter). The transceiver may further include an antenna, and the number of antennas may be one or more. The transceiver 220 may also be a communication interface or an interface circuit.

[0172] Specifically, the processor 210 in the device 200 may correspond to the processing unit 110 in the communication device 100. The transceiver 220 in the device 200 may correspond to the sending unit 120 in the communication device 100.

[0173] As a solution, the communication device 200 is used to implement each step in the above method 800 embodiment.

[0174] For example, the processor 210 is used to execute the computer program or instructions stored in the memory 230 to implement the various steps in the above method 200 and method 300.

[0175] According to the method provided in the embodiment of the present application, the present application also provides a computer program product, on which a computer program code is stored. When the computer program code is run on a computer, the computer executes each step in the embodiment of method 800.

[0176] According to the method provided in the embodiment of the present application, the present application also provides a computer-readable medium, which stores a program code. When the program code is run on a computer, the computer executes each step in the above-mentioned method 200 and method 300.

[0177] The explanation of the relevant contents and beneficial effects of any of the above-mentioned devices can be referred to the corresponding method embodiments provided above, which will not be repeated here.

[0178] It should be understood that the specific process of each transceiver and processor executing the above corresponding steps has been described in detail in the above method embodiment, and for the sake of brevity, it will not be repeated here.

[0179] In the implementation process, each step of the above method can be completed by an integrated logic circuit of hardware in a processor or an instruction in the form of software. The steps of the method disclosed in conjunction with the embodiment of the present application can be directly embodied as a hardware processor for execution, or a combination of hardware and software modules in a processor for execution. The software module can be located in a storage medium mature in the art such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in a memory, and the processor reads the information in the memory and completes the steps of the above method in conjunction with its hardware. To avoid repetition, it is not described in detail here.

[0180] It should be noted that the processor in the embodiment of the present application can be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method embodiment can be completed by the hardware integrated logic circuit or software instructions in the processor. The above processor can be a general processor, a digital signal processor (digitalsignal processor, DSP), an application-specific integrated circuit (application-specific integrated circuit, ASIC), a field-programmable gate array (field-programmable gate array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general processor can be a microprocessor or the processor can also be any conventional processor, etc. The steps of the method disclosed in the embodiment of the present application can be directly embodied as a hardware decoding processor to perform, or the hardware and software modules in the decoding processor can be combined and performed. The software module can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0181] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a high-density digital video disc (DVD)), or a semiconductor medium (eg, a solid state disc (SSD)).

[0182] In the above-mentioned various device embodiments, the corresponding modules or units perform the corresponding steps. For example, the transceiver unit (transceiver) performs the steps of receiving or sending in the method embodiment, and other steps except sending and receiving can be performed by the processing unit (processor). The functions of the specific units can refer to the corresponding method embodiments. Among them, there can be one or more processors.

[0183] The terms "component", "module", "system", etc. used in this specification are used to represent computer-related entities, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component can be, but is not limited to, a process running on a processor, a processor, an object, an executable file, an execution thread, a program and / or a computer. By way of illustration, both applications running on a communication device and a communication device can be components. One or more components can reside in a process and / or an execution thread, and a component can be located on a computer and / or distributed between two or more computers. In addition, these components can be executed from various computer-readable media having various data structures stored thereon. Components can, for example, communicate through local and / or remote processes according to signals having one or more data packets (e.g., data from two components interacting with another component between a local system, a distributed system and / or a network, such as the Internet interacting with other systems through signals).

[0184] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0185] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0186] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0187] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0188] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0189] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories (ROM), random access memories (RAM), magnetic disks or optical disks.

[0190] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A method for cell reselection, characterized in that: include: Reside in the service cell; In a case where a serving frequency corresponding to a serving cell is configured with a dedicated priority, if the signal quality of the serving cell is less than or equal to a first threshold, triggering measurement of a first cell, the first cell including at least one of an inter-frequency cell and an inter-system cell, wherein the first cell is not configured with a dedicated priority and a reduced priority, and the first threshold is greater than a minimum resident threshold; If the measurement result of the first cell meets the cell reselection condition, the first cell is reselected.

2. The method according to claim 1, characterized in that In the case that the first cell includes at least two cells, if the measurement results corresponding to the at least two cells respectively meet the cell reselection condition, the cell with the best signal quality in the measurement results is reselected.

3. The method according to claim 1 or 2, characterized in that: The method further comprises: Receive a first signaling, where the first signaling is used to configure a dedicated priority level of a service frequency corresponding to the service cell for a terminal device.

4. The method according to claim 3, characterized in that The first signaling is also used to configure the terminal device to reduce the priority of the service frequency corresponding to the service cell.

5. The method according to any one of claims 1 to 4, characterized in that The method further comprises: Receive a second signaling, where the second signaling is used to configure a general priority of a first frequency corresponding to the first cell for the terminal device, where the first frequency includes at least one of an hetero-frequency frequency and a hetero-system frequency, where the hetero-frequency frequency is the frequency corresponding to the hetero-frequency cell, and the hetero-system frequency is the frequency corresponding to the hetero-system cell.

6. The method according to any one of claims 1 to 5, characterized in that The first threshold is a predefined value.

7. A method for cell reselection, characterized in that: include: Reside in the service cell; Obtain a first priority of a first frequency, wherein the first frequency includes at least one of an inter-frequency frequency and an inter-system frequency, the inter-frequency frequency is a frequency corresponding to an inter-frequency cell, the inter-system frequency is a frequency corresponding to an inter-system cell, and the first priority includes at least one of a dedicated priority and a reduced priority; If the valid time corresponding to the first priority times out and the general priority is not configured for the first frequency point, when the signal quality of the serving cell is less than or equal to a first threshold, the measurement of the first cell is triggered, and the first cell includes at least one of the inter-frequency cell and the inter-system cell, and the first threshold is greater than the minimum resident threshold; If the measurement result of the first cell meets the cell reselection condition, the first cell is reselected.

8. The method according to claim 7, characterized in that In the case that the first cell includes at least two cells, if the measurement results corresponding to the at least two cells respectively meet the cell reselection condition, the cell with the best signal quality in the measurement results is reselected.

9. The method according to claim 7 or 8, characterized in that: The method further comprises: A third signaling is received, where the third signaling is used to configure the first priority for the first frequency.

10. The method according to claim 9, characterized in that The third signaling is also used to configure the first priority for the service frequency corresponding to the serving cell.

11. The method according to any one of claims 7 to 10, characterized in that The first threshold is a predefined value.

12. A communication device, characterized in that: include: A processing unit and a storage unit, wherein the processing unit is used to execute a computer program or instruction stored in the storage unit and to perform the following method: In a case where a service frequency corresponding to a serving cell is configured with a dedicated priority, if the signal quality of the serving cell is less than or equal to a first threshold, the processing unit is used to trigger measurement of a first cell, the first cell including at least one of an inter-frequency cell and an inter-system cell, wherein the first cell is not configured with a dedicated priority and a reduced priority, the first threshold is greater than a minimum resident threshold, and the communication device resides in the serving cell; If the measurement result of the first cell meets the cell reselection condition, the processing unit is used to reselect to the first cell.

13. The communication device according to claim 12, characterized in that In the case that the first cell includes at least two cells, if the measurement results corresponding to the at least two cells respectively meet the cell reselection condition, the processing unit is configured to reselect the cell with the best signal quality in the measurement results.

14. The communication device according to claim 12 or 13, characterized in that: The communication device further comprises a transceiver unit, The transceiver unit is used to receive a first signaling, where the first signaling is used to configure a dedicated priority of a service frequency corresponding to the service cell for a communication device.

15. The communication device according to claim 14, characterized in that The first signaling is also used to configure, for the communication device, a downgraded priority of the service frequency corresponding to the service cell.

16. The communication device according to any one of claims 12 to 15, characterized in that: The transceiver unit is also used to receive a second signaling, where the second signaling is used to configure a general priority of a first frequency corresponding to the first cell for the terminal device, where the first frequency includes at least one of an hetero-frequency frequency and a hetero-system frequency, where the hetero-frequency frequency is a frequency corresponding to the hetero-frequency cell, and where the hetero-system frequency is a frequency corresponding to the hetero-system cell.

17. The communication device according to any one of claims 12 to 16, characterized in that: The first threshold is a predefined value.

18. A communication device, characterized in that: include: A processing unit and a storage unit, wherein the processing unit is used to execute a computer program or instruction stored in the storage unit and to perform the following method: The processing unit is used to obtain a first priority of a first frequency point, wherein the first frequency point includes at least one of an inter-frequency frequency point and an inter-system frequency point, the inter-frequency frequency point is a frequency point corresponding to an inter-frequency cell, the inter-system frequency point is a frequency point corresponding to an inter-system cell, and the first priority includes at least one of a dedicated priority and a reduced priority; If the valid time corresponding to the first priority times out, and the general priority is not configured for the first frequency point, when the signal quality of the serving cell is less than or equal to a first threshold, the processing unit is used to trigger measurement of the first cell, the first cell includes at least one of the inter-frequency cell and the inter-system cell, the first threshold is greater than the minimum residence threshold, wherein the communication device resides in the serving cell; If the measurement result of the first cell meets the cell reselection condition, the processing unit is used to reselect to the first cell.

19. The communication device according to claim 18, characterized in that In the case that the first cell includes at least two cells, if the measurement results corresponding to the at least two cells respectively meet the cell reselection condition, the processing unit is configured to reselect the cell with the best signal quality in the measurement results.

20. The communication device according to claim 19, characterized in that The communication device further comprises: a transceiver unit, The transceiver unit is used to receive a third signaling, and the third signaling is also used to configure the first priority for the first frequency point.

21. The communication device according to claim 20, characterized in that The third signaling is also used to configure the first priority for the service frequency corresponding to the serving cell.

22. The communication device according to any one of claims 15 to 17, characterized in that: The first threshold is a predefined value.

23. A communication device, characterized in that: include: A processor, the processor being coupled to a memory, the processor being used to call computer program instructions stored in the memory to execute the method according to any one of claims 1 to 6, or to implement the method according to any one of claims 7 to 11.

24. A communication device, characterized in that: It includes a processor and an interface circuit, wherein the interface circuit is used to receive signals from other communication devices outside the communication device and transmit them to the processor or send signals from the processor to other communication devices outside the communication device, and the processor is used to implement the method as described in any one of claims 1 to 11 through a logic circuit or executing code instructions.

25. A communication system, characterized in that: include: A terminal device and a network device, wherein the terminal device is used to execute the method according to any one of claims 1 to 6, or to implement the method according to any one of claims 7 to 11.

26. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores instructions, and when the instructions are executed on a computer, the computer is enabled to execute the method according to any one of claims 1 to 11.

27. A computer program product, characterized in that The method comprises instructions, which, when executed on a computer, cause the computer to execute the method according to any one of claims 1 to 11.

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