Cell residence method, device, equipment, storage medium and program product

Abstract

The invention discloses a cell residence method, device and equipment, a storage medium and a program product, and the method comprises the steps: receiving a low-power-consumption synchronization signal when a terminal is in a measurement unloading state; when the received low-power-consumption synchronization signal changes, initiating cell selection or reselection; when the received low-power-consumption synchronization signal does not change, acquiring a synchronization signal / physical broadcast channel block, and determining whether to trigger cell selection or reselection according to the synchronization signal / physical broadcast channel block; according to the invention, cell selection or reselection based on a low-power-consumption synchronization signal can be realized, and under the conditions that measurement is unloaded and coverage of two cells is overlapped, the problem that the terminal does not judge a suitable cell or acquire a system message and the like because the terminal does not know that a main receiver enters the other cell when the terminal moves can be avoided, so that the user experience is improved. And the risk of failure of cell selection or reselection is reduced.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a cell residency method, device, equipment, storage medium and program product. Background Art

[0002] At present, UE (User Equipment, also known as terminal, terminal equipment) only relies on NR (New Radio, new radio / new air interface) receivers for measurement, cell residence reselection and other behaviors. Cell residence occurs when the UE is just turned on, that is, UE power-on / power-on is the condition / event that triggers the UE to reside in the cell, and the quality of the cell selected by the UE must meet the S criterion. When the UE selects and resides in a cell, it will perform co-frequency / inter-frequency measurements based on the network configuration, and may trigger cell reselection. When the S criterion / R criterion is met, after the UE selects a cell, the UE needs to determine whether the cell is a suitable cell. This process is mainly achieved by obtaining SIB (System Information Block, system message block) 1; if the UE cannot obtain SIB1, it can be considered that the cell is not a suitable cell, and it cannot reside in the cell. Once the terminal resides in a cell, the UE will receive system messages in the cell and listen for paging.

[0003] In order to reduce the demand for UE communication power consumption, it is currently an important research direction to configure two different receivers, LR (Low-Power Receiver) and MR (Main Receiver, i.e. the above-mentioned NR receiver), in the UE to receive different transmission signals. In this case, the UE can be called a LP-WUS (Low-Power Wake-Up Signal) supporting terminal. The LP-WUS supporting terminal supports measurement relaxation and unloading of the current serving cell. In the measurement unloading scenario, the UE's measurement is completely performed through the LR, and only the current serving cell can be measured; therefore, in the case of overlapping coverage of two cells, when the terminal moves and the MR enters another cell, the UE may not know it, and there are problems such as failure to determine the appropriate cell or obtain system messages. Summary of the invention

[0004] In view of the problems existing in the prior art, the embodiments of the present invention provide a cell residence method, apparatus, device, storage medium and program product, which can realize cell selection or reselection based on low-power synchronization signals and reduce the risk of cell selection or reselection failure.

[0005] In a first aspect, an embodiment of the present invention provides a cell camping method, which is applied to a terminal, including:

[0006] When the terminal is in measurement offloading, receiving a low-power synchronization signal;

[0007] When the received low-power synchronization signal changes, cell selection or reselection is initiated;

[0008] When the received low-power synchronization signal does not change, a synchronization signal / physical broadcast channel block is acquired, and it is determined whether to trigger cell selection or reselection according to the synchronization signal / physical broadcast channel block.

[0009] As an improvement of the above solution, when the received low-power synchronization signal changes, initiating cell selection or reselection includes:

[0010] When the received low-power synchronization signal changes, the main receiver is turned on and cell selection / reselection is performed.

[0011] As an improvement of the above solution, when the received low-power synchronization signal changes, turning on the main receiver and performing cell selection / reselection includes:

[0012] When the received low power synchronization signal changes, determining whether first priori information of the target cell exists;

[0013] The first a priori information includes: a low-power wake-up signal configuration of the target cell, and / or a network indication of whether to obtain system information or a first system message block SIB1 of the target cell;

[0014] When the first a priori information does not exist, the primary receiver is turned on and cell selection / reselection is performed.

[0015] As an improvement of the above solution, the method further includes:

[0016] Get the low power wake-up signal configuration of the cell after cell selection / reselection;

[0017] According to the low power consumption wake-up signal configuration, a low power consumption wake-up signal and / or a low power consumption synchronization signal is listened to.

[0018] As an improvement of the above solution, when the received low-power synchronization signal changes, initiating cell selection or reselection includes:

[0019] When the received low-power synchronization signal changes, determining whether to turn on the main receiver according to the second prior information;

[0020] When the main receiver is turned on, at least one of the following is performed:

[0021] Perform cell selection / reselection, camp on a cell that meets the cell selection / reselection criteria and receive paging;

[0022] Acquire system information of a target cell, select / reselect a cell according to the system information, reside in the cell after the cell selection / reselection and receive paging;

[0023] The first system information block SIB1 of the target cell or the paging message reception related settings are obtained, and the target cell is resided and the paging is received.

[0024] As an improvement of the above solution, the second prior information includes: system information of the last camped cell stored by the terminal and a low-power wake-up signal configuration of the last camped cell;

[0025] The step of determining whether to turn on the main receiver according to the second prior information includes:

[0026] When the low-power wake-up signal configuration of the target cell is different from the low-power wake-up signal configuration of the last camped cell, low-power wake-up signal monitoring is performed according to the low-power wake-up signal configuration of the target cell; wherein the low-power wake-up signal configuration of the target cell is indicated by the network or acquired by the terminal;

[0027] When the corresponding low-power wake-up signal is detected, the main receiver is turned on.

[0028] As an improvement of the above solution, the method further includes:

[0029] Obtain the low-power wake-up signal configuration of the target cell through the broadcast information of the current serving cell or the dedicated signaling of the radio resource control;

[0030] The low power consumption wake-up signal configuration of the target cell is configured on a per-cell basis or on a per-area basis.

[0031] As an improvement of the above solution, when the received low-power synchronization signal does not change, obtaining a synchronization signal / physical broadcast channel block, and determining whether to trigger cell selection or reselection according to the synchronization signal / physical broadcast channel block include:

[0032] When the received low-power synchronization signal does not change, the terminal turns on the main receiver or determines whether to turn on the main receiver according to the network configuration;

[0033] When the main receiver is turned on, a synchronization signal / physical broadcast channel block is obtained;

[0034] Whether to trigger cell selection or reselection is determined according to the physical cell identifier in the synchronization signal / physical broadcast channel block.

[0035] As an improvement of the above solution, the determining whether to trigger cell selection or reselection according to the physical cell identifier in the synchronization signal / physical broadcast channel block includes:

[0036] Determining whether a physical cell identifier in the synchronization signal / physical broadcast channel block changes;

[0037] When a physical cell identifier in the synchronization signal / physical broadcast channel block changes, triggering cell selection or reselection;

[0038] When the physical cell identifier in the synchronization signal / physical broadcast channel block does not change, the main receiver is turned off, and the low power consumption wake-up signal is listened to by the low power consumption receiver.

[0039] As an improvement of the above solution, the step of determining whether to start the main receiver according to the network configuration includes:

[0040] When a preset main receiver startup criterion is met, the main receiver is turned on;

[0041] The main receiver activation criteria include at least one of the following:

[0042] The SI validity period exceeds the first duration threshold specified by the network configuration or protocol;

[0043] The duration of starting the low power receiver for measurement exceeds the second duration threshold specified by the network configuration or protocol;

[0044] The low-power wake-up signal listening start time exceeds the third time threshold specified by the network configuration or protocol;

[0045] The low power synchronization signal meets the low power synchronization signal measurement threshold for determining whether to detect a cell change in the network configuration.

[0046] As an improvement of the above solution, the method further includes:

[0047] When a preset low power synchronization signal judgment criterion is met, determining that the received low power synchronization signal has changed;

[0048] The low power synchronization signal judgment criteria include at least one of the following:

[0049] Transmission change of cell identification information in the received low power synchronization signal;

[0050] The received low power synchronization signal uses a different sequence.

[0051] As an improvement of the above solution, the method further includes:

[0052] When the terminal is in measurement relaxation, the current serving cell and neighboring cells of the terminal are measured according to the network configuration, and cell selection or reselection is performed according to the S criterion and / or the R criterion.

[0053] As an improvement of the above solution, the method further includes:

[0054] The measurement relaxation or measurement offloading decision is made according to the criteria and / or thresholds related to the measurement relaxation and measurement offloading specified by the network configuration and / or protocol.

[0055] In a second aspect, an embodiment of the present invention provides a cell resident device, including:

[0056] A first signal receiving module, configured to receive a low-power synchronization signal when the terminal is in measurement unloading;

[0057] A first cell selection / reselection module, configured to initiate cell selection or reselection when a received low-power synchronization signal changes;

[0058] The second cell selection / reselection module is used to obtain a synchronization signal / physical broadcast channel block when the received low-power synchronization signal does not change, and determine whether to trigger cell selection or reselection according to the synchronization signal / physical broadcast channel block.

[0059] In a third aspect, an embodiment of the present invention provides a cell residence device, comprising: a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein when the processor executes the computer program, it implements the cell residence method as described in any one of the first aspects.

[0060] In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, wherein when the computer program is running, the device where the computer-readable storage medium is located is controlled to execute the cell residence method as described in any one of the first aspects.

[0061] In a fifth aspect, an embodiment of the present invention provides a computer program product, including a computer program / instruction, which, when executed by a processor, implements the cell residency method as described in any one of the first aspects.

[0062] Compared with the prior art, a cell residence method, apparatus, device, storage medium and program product according to an embodiment of the present invention receives a low-power synchronization signal when the terminal is in measurement unloading; initiates cell selection or reselection when the received low-power synchronization signal changes; obtains a synchronization signal / physical broadcast channel block when the received low-power synchronization signal does not change, and determines whether to trigger cell selection or reselection according to the synchronization signal / physical broadcast channel block, thereby realizing cell selection or reselection based on low-power synchronization signals. In the case of measurement unloading and overlapping coverage of two cells, the problem that when the terminal moves, the terminal does not know that the main receiver enters another cell, resulting in failure to perform actions such as determining a suitable cell or obtaining system messages, can be avoided, thereby reducing the risk of cell selection or reselection failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] In order to more clearly illustrate the technical solution of the present invention, the drawings used in the implementation mode will be briefly introduced below. Obviously, the drawings described below are only some implementation modes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0064] Figure 1 It is a schematic diagram of signal reception by a main receiver and a low power consumption receiver in a terminal provided by an embodiment of the present invention;

[0065] Figure 2 is a flow chart of a cell residency method provided by an embodiment of the present invention;

[0066] Figure 3 is a schematic diagram of overlapping coverage of cells provided by an embodiment of the present invention;

[0067] Figure 4 is another schematic diagram of overlapping coverage of cells provided by an embodiment of the present invention;

[0068] Figure 5 is a structural block diagram of a cell resident device provided by an embodiment of the present invention;

[0069] Figure 6 It is a structural block diagram of a cell resident device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0070] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0071] It is understood that the various numbers involved in the embodiments of the present invention are only for the convenience of description and are not intended to limit the scope of the present application. The size of the sequence number of each process does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic.

[0072] In embodiments of the present invention, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. The terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, the elements defined by the statement "include..." do not exclude the existence of other identical elements in the process, method, article or device including the elements. The term "multiple or several" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B, which can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0073] The following is an explanation of some related technologies involved in the embodiments of the present invention.

[0074] In order to reduce the power consumption of UE communication, relevant technologies have started the research on LP-WUR and LP-WUS. Specifically, the UE will have the following two different receivers:

[0075] MR (Main Receiver): This receiver is used to receive signals specified in existing NR technology. MR has strong reception performance and can achieve high transmission rates; however, it is also more complex and therefore consumes more power.

[0076] LR (Low-Power Receiver): This receiver is used to receive low-power signals. In the discussion of related technologies, low-power signals may include low-power wake-up signals LP-WUS and LP-SS (Low-Power Synchronization Signal). LR has relatively weak reception performance and limited achievable transmission rate; but at the same time, its implementation is simple and has low complexity, so its power consumption is much lower than MR.

[0077] like Figure 1As shown, the network device can send two types of signals, and the UE can receive corresponding transmission signals based on different receivers.

[0078] At present, relevant technical research believes that the coverage of low-power signal is the same as that of NR Msg3, but in order to ensure the performance of UE, the range of UE listening to low-power signal, such as the range of listening to LP-WUS, may be smaller than the range of NR Msg3. In the prior art, the RAN (Radio Access Network) 2 determines whether to turn on MR (or only listen to) LR as follows:

[0079] The entry condition defines the benchmark: If the quality of the current serving cell (also described as serving cell), such as RSRP (Reference Signal Received Power) and RSRQ (Reference Signal Received Quality) from the MR is higher than the threshold (if configured), the UE may start monitoring the LP-WUS. If the UE monitors the LP-WUS, it may stop monitoring the legacy PO (Paging Occasion). If measurements from the LR are required, it is FFS (for further study).

[0080] Exit condition definition basis: If the current serving cell measurement result based on LR is below the threshold (if configured), the UE will monitor PO as before and may stop monitoring LP-WUS.

[0081] In addition, the current relevant technology is still discussing the RRM (Radio Resource Management) measurement relaxation and unloading (also described as offloading) of idle / inacitve (deactivated, also called inactive) state UE in this scenario. Among them, measurement offloading means that the terminal equipment will turn off the MR and no longer perform measurements based on the signals received by the MR, but only rely on the signals received by the LR for measurement (only for the current service cell), such as measuring the current service cell based on LP-SS. Measurement relaxation may be UE MR measurement relaxation, such as using a larger current service cell / neighboring cell measurement period than normal when certain conditions are met, and through LP-WUR.

[0082] Before the introduction of LP-WUS technology, UE only relied on NR receiver (MR described in LP-WUS) for measurement, cell residence and other behaviors. Cell selection occurred when the terminal was just turned on, that is, UE power-on / power-on was the condition / event that triggered UE to select a cell. The quality of the cell selected by UE must meet the S criterion; when the terminal selects and resides in a cell (current serving cell of UE), it will perform co-frequency / inter-frequency measurements based on network configuration, and may trigger cell reselection.

[0083] After the UE selects a cell (satisfying the S criterion / R criterion), the UE needs to determine whether the cell is a suitable cell (also described as a suitable cell). This process is mainly achieved by obtaining SIB1. That is, if the UE cannot obtain SIB1, it is considered that the cell is not a suitable cell and cannot camp in the cell. Once the UE camps in a cell, the UE will receive system messages and listen to paging (also described as paging) in the cell.

[0084] The traditional cell selection and cell reselection methods are as follows:

[0085] The purpose of cell selection is to enable the UE to select a cell with satisfactory channel quality as soon as possible after it is powered on. Cell selection mainly includes two categories: initial cell selection and cell selection based on stored information. Among them, in the initial cell selection process, it means that the UE needs to search for the strongest cell on each carrier frequency according to its own capabilities and calculate whether the cell on the carrier frequency meets the S criterion. Once a suitable cell is found, the UE will reside in the cell. The S criterion for cell selection is as follows:

[0086] Srxlev>0AND Squal>0, where:

[0087] Srxle=Q rxlevmea -(Q rxlevmin +Q rxlevminoffset )-P compensation -Q offsettemp ;

[0088] Squal=Q qualmeas -(Q qualmin +Q qualminoffset )-Q offsettemp ;

[0089] In the above parameters:

[0090] Srxlev represents the reception level in the cell search, such as RSRP (Reference Signal Received Power);

[0091] Squal indicates the quality of the signal received during cell search;

[0092] Q rxlevmeas Indicates the measured reception level value of the cell selection;

[0093] Q rxlevmin Indicates the minimum receiving level;

[0094] Q rxlevminoffset Indicates the offset value of the minimum receiving level;

[0095] P compensation represents the terminal level compensation parameter;

[0096] Q offsettemp Indicates the offset value used when the RRC (Radio Resource Control) connection establishment fails;

[0097] Q qualmeas Indicates the measured cell selection received signal quality value, such as RSRQ (Reference Signal Received Quality);

[0098] Q qualmin Indicates the minimum received signal quality;

[0099] Q qualminoffset An offset value indicating the minimum received signal quality;

[0100] The purpose of cell reselection is to ensure that the UE resides in a cell with better signal quality. When residing in a cell, the UE will continue to measure the cell. The UE measures the RSRP value Srxlev of the current serving cell. For inter-frequency or inter-system high priority frequencies, the UE always performs inter-frequency / inter-system measurements. If the inter-frequency priority is lower than the current serving carrier priority and the current serving cell Srxlev>S nonIntraSearchP , the UE does not perform inter-frequency measurement, otherwise it needs to enable inter-frequency low-priority cell measurement. IntraSearchP UE does not perform the same frequency measurement. For the reselection of cells with the same frequency or frequency priority, the R criterion is used. During the cell reselection, RSRP is usually measured. The candidate cells are sorted according to the R criterion according to the signal quality and the best cell is selected as follows:

[0101] R s =Q meas，s +Q Hyst -Q offsettemp ;

[0102] R n =Q meas，n -Qoffset -Q offsettemp ;

[0103] Among them, Q meas，s Indicates the measured RSRP value of the current serving cell;

[0104] Q Hyst Indicates the cell reselection hysteresis value of the current serving cell;

[0105] Q ffsettemp Indicates the offset value added temporarily;

[0106] Q meas，n Indicates the measured RSRP value of the candidate cell;

[0107] Q offset Represents an offset value;

[0108] When the candidate cell is ranked higher than the current serving cell and the duration exceeds the threshold Treslection, and the UE resides in the current serving cell for more than a certain period of time (such as 1 second), the UE reselects to the candidate cell.

[0109] Since the existing technology also stipulates the measurement relaxation behavior, the measurement relaxation is only for the neighboring cells, not for the current serving cell, and the relaxation mainly adopts a larger measurement cycle. Therefore, the following problems exist:

[0110] LP-WUS supporting terminal supports measurement relaxation and unloading of the current serving cell. In the unloading scenario, the UE measurement is completely performed through the LR, and only the current serving cell can be measured. Therefore, when the two cells overlap, when the UE moves and the MR enters another cell, the UE may not know it. There are problems such as failure to determine the appropriate cell or obtain system information (such as SIB1), which may cause the terminal device to fail to select / reselect the cell. In order to solve the above technical problems, an embodiment of the present invention proposes a cell residence method.

[0111] See also Figure 1 , Figure 1 1 is a flow chart of a cell residing method provided by an embodiment of the present invention. The cell residing method is executed by a terminal having a main receiver and a low power consumption receiver, and the method specifically includes:

[0112] S11: When the terminal is in measurement offloading, receiving a low power synchronization signal;

[0113] S12: When the received low power synchronization signal changes, cell selection or reselection is initiated;

[0114] S13: When the received low-power synchronization signal does not change, obtain a synchronization signal / physical broadcast channel block, and determine whether to trigger cell selection or reselection according to the synchronization signal / physical broadcast channel block.

[0115] It should be noted that when the terminal does not measure the unloading, it is not stipulated that the terminal must not receive the low-power consumption signal. At this time, the terminal may or may not receive the low-power consumption synchronization signal.

[0116] Furthermore, when the terminal is in measurement relaxation, the current serving cell and neighboring cells of the terminal are measured according to the network configuration, and cell selection or reselection is performed according to the S criterion and / or the R criterion.

[0117] In the embodiment of the present invention, the terminal may make a measurement relaxation or measurement offloading decision according to the criteria and / or thresholds related to measurement relaxation and measurement offloading specified by the network configuration and / or protocol.

[0118] The criteria and / or thresholds related to measurement relaxation and measurement offloading specified by the network configuration and / or protocol are used to specify that the terminal performs measurement relaxation or measurement offloading when a specific criterion or threshold value is met.

[0119] For example, a threshold for turning off and on the main receiver, and a threshold for relaxing the measurement of the (main receiver) are set. When the corresponding threshold is met, the main receiver is turned off / on or the measurement is relaxed. In some embodiments, the corresponding threshold and low-power synchronization signal detection can be used in conjunction. For example, a low-power synchronization signal threshold for turning off and on the main receiver, and a low-power synchronization signal threshold for relaxing the measurement of the (main receiver) can be set. When it is detected that the currently received low-power synchronization signal meets the corresponding low-power synchronization signal threshold, the main receiver is turned off / on or the measurement is relaxed.

[0120] Taking the case where the terminal moves from the current serving cell (such as cell 1) to the target cell (such as cell 2, where cell 2 and cell 1 overlap) as an example, the case where the terminal performs measurement relaxation or measurement offloading is described.

[0121] like Figure 3As shown, although the range of the configured low-power receiver to listen to low-power signals (such as low-power wake-up signals or low-power synchronization signals) is smaller than the range of the main receiver to listen to signals, the low-power receiver listening ranges of the terminal in cell 1 and cell 2 overlap. At this time, in the overlapping area of ​​the low-power receiver listening ranges, the terminal can always receive low-power signals, and the terminal does not need to turn on the main receiver for measurement (that is, the main receiver is turned off and the measurement is unloaded). The terminal can use the low-power receiver for measurement throughout the process of moving from cell 1 to cell 2. It should be understood that when the terminal is along the coverage area of ​​cell 1 and cell 2 but not in the overlapping area of ​​the low-power receiver listening range, the terminal needs to turn on the main receiver for measurement relaxation, and turn off the main receiver when moving to the low-power receiver listening range of cell 2, and use the low-power receiver for measurement. Therefore, the terminal is Figure 3 When moving within the cell coverage area shown, there may be two situations: measurement offloading and measurement relaxation.

[0122] like Figure 4 As shown in the figure, the range of the low-power receiver to listen to the low-power signal (such as the low-power wake-up signal or the low-power synchronization signal) is much smaller than the range of the main receiver to listen to the signal. At this time, the low-power receiver listening ranges of the terminal in cell 1 and cell 2 do not overlap. In the area where the low-power receiver listening ranges do not overlap (that is, the terminal does not receive the low-power signal), the terminal needs to turn on the main receiver for measurement relaxation, and turn off the main receiver when moving to the low-power receiver listening range of cell 2, and use the low-power receiver for measurement. Therefore, the terminal Figure 4 There is a relaxation of measurements when moving within the cell coverage area shown.

[0123] Therefore, whether measurement unloading or measurement relaxation is required can be determined based on whether the terminal receives a low-power wake-up signal or a low-power synchronization signal, or whether the signal strength of the received low-power wake-up signal or the low-power synchronization signal meets a certain threshold. For example, if a low-power wake-up signal or a low-power synchronization signal can be received, the measurement is unloaded, otherwise the measurement is relaxed; for another example, if the signal strength of the received low-power wake-up signal or the low-power synchronization signal meets a certain threshold, the measurement is unloaded, otherwise the measurement is relaxed.

[0124] It should be noted that in the embodiments of the present invention, no specific limitation is imposed on the criteria and / or thresholds related to measurement relaxation and measurement offloading.

[0125] Furthermore, the method further comprises:

[0126] When a preset low power synchronization signal judgment criterion is met, determining that the received low power synchronization signal has changed;

[0127] The low power synchronization signal judgment criteria include at least one of the following:

[0128] Transmission change of cell identification information in the received low power synchronization signal;

[0129] The received low power synchronization signal uses a different sequence.

[0130] For example, when the terminal is in measurement unloading, that is, the terminal only measures through the low-power receiver, the main receiver is turned off (for example, the threshold for turning on the main receiver is not reached), the terminal (low-power receiver) receives the low-power synchronization signal and listens for the low-power wake-up signal. Then the terminal determines whether a different low-power synchronization signal is received.

[0131] For example, when the low-power synchronization signal carries cell identification information (such as a physical cell identifier (PCI), when the physical cell identifier in the low-power synchronization signal received by the terminal changes (that is, the physical cell identifiers in the low-power synchronization signals received twice are different), it is determined that a different low-power synchronization signal is received, that is, the received low-power synchronization signal changes;

[0132] Alternatively, when the low power synchronization signal received by the terminal uses a different sequence (that is, the sequences in the low power synchronization signals received twice adjacently are different), it is determined that a different low power synchronization signal is received, that is, the received low power synchronization signal changes;

[0133] If the physical cell identifier in the low power synchronization signal received by the terminal does not change, or the received low power synchronization signal uses the same sequence, it is considered that the received low power synchronization signal does not change.

[0134] Furthermore, when the received low-power synchronization signal changes (such as Figure 3 When the terminal initiates cell selection or reselection, there are several specific situations.

[0135] The first case is: when the received low-power synchronization signal changes, the main receiver is turned on and cell selection / reselection is performed.

[0136] For example, the low power synchronization signal changes, and the terminal considers that mobility has occurred (for example Figure 3 In the process, when the terminal enters cell 2 from cell 1, the terminal turns on the main receiver and performs a cell selection / reselection process, after which the terminal may select cell 2 or other cells.

[0137] As an optional embodiment, when the received low power synchronization signal changes, the main receiver is turned on and cell selection / reselection is performed, including:

[0138] When the received low power synchronization signal changes, determining whether first priori information of the target cell exists;

[0139] The first prior information includes but is not limited to: a low-power wake-up signal configuration of the target cell, and / or a network indication of whether to obtain the system information of the target cell or the first system message block SIB1, etc.; the target cell is a cell that has overlapping coverage with the current serving cell of the terminal;

[0140] When the first a priori information does not exist, the primary receiver is turned on and cell selection / reselection is performed.

[0141] For the first case mentioned above, the behavior of turning on the main receiver and performing cell selection / reselection is based on the fact that the terminal has no first a priori information about the target cell (such as cell 2), such as the low-power wake-up signal configuration of the target cell, or the network's explicit instructions (such as whether to obtain the system information of the target cell or the indication of the first system message block SIB1), etc.

[0142] As an optional embodiment, the method further includes:

[0143] Get the low power wake-up signal configuration of the cell after cell selection / reselection;

[0144] According to the low power consumption wake-up signal configuration, a low power consumption wake-up signal and / or a low power consumption synchronization signal is listened to.

[0145] Based on the first case above, after the terminal turns on the main receiver and performs cell selection / reselection, it obtains the low power wake-up signal configuration of the cell after cell selection / reselection, and based on the low power wake-up signal, listens to the low power wake-up signal, listens to the low power synchronization signal, etc. Possibly, the above behavior is based on if the terminal does not have any prior information about the current cell, such as the LP-WUS configuration information of the current cell, or an explicit instruction from the network;

[0146] The second situation is: when the received low-power synchronization signal changes, determining whether to turn on the main receiver is based on the second prior information;

[0147] When the main receiver is turned on, at least one of the following is performed:

[0148] Perform cell selection / reselection, camp on a cell that meets the cell selection / reselection criteria and receive paging;

[0149] Acquire system information of a target cell, select / reselect a cell according to the system information, reside in the cell after the cell selection / reselection and receive paging;

[0150] The first system information block SIB1 of the target cell or the paging message reception related settings are obtained, and the target cell is resided and the paging is received.

[0151] The second prior information includes but is not limited to: system information of the last resident cell and low-power wake-up signal configuration of the last resident cell stored by the terminal;

[0152] In an optional embodiment, determining whether to turn on the main receiver according to the second prior information includes:

[0153] When the low-power wake-up signal configuration of the target cell is different from the low-power wake-up signal configuration of the last camped cell, low-power wake-up signal monitoring is performed according to the low-power wake-up signal configuration of the target cell; wherein the low-power wake-up signal configuration of the target cell is indicated by the network or acquired by the terminal;

[0154] When the corresponding low-power wake-up signal is detected, the main receiver is turned on.

[0155] For example, the low power synchronization signal changes, and the terminal considers that mobility has occurred (for example Figure 3 The terminal enters cell 2 from cell 1), but based on the second prior information of the target cell (i.e., cell 2), the cell selection / reselection process is not immediately performed. The second prior information here may be the system message stored by the terminal (the system message obtained from the last resident cell, such as the first system message block SIB1, etc.), the low-power wake-up signal configuration of the last resident cell, etc., which is used to determine whether to turn on MR. For example, whether the target cell is a suitable cell is determined based on the first system message block SIB1 of the target cell, and whether the low-power wake-up signal configuration of the target cell is the same as the low-power wake-up signal configuration of the last resident cell; if it is determined that the target cell is a suitable cell, or the low-power wake-up signal configuration of the target cell is different from the low-power wake-up signal configuration of the last resident cell, the main receiver is turned on. After the terminal turns on the main receiver, perform one of the following actions:

[0156] (1) Perform cell selection / reselection and stay in a cell that meets the cell selection / reselection criteria (such as S criteria and R criteria) to obtain paging;

[0157] (2) Obtain system information of the target cell, such as the first system information block SIB1, to determine whether it is a suitable cell. If so, camp on the target cell and receive paging. Otherwise, select another cell to camp on and receive paging.

[0158] (3) Obtain the first system information block SIB1 of the target cell (obtain paging message reception related configuration), and receive paging in the target cell.

[0159] As an optional embodiment, the method further includes:

[0160] Obtain the low-power wake-up signal configuration of the target cell through the broadcast information of the current serving cell or the dedicated signaling of the radio resource control (RRC);

[0161] The low power consumption wake-up signal configuration of the target cell is configured on a per-cell basis or on a per-area basis.

[0162] In an embodiment of the present invention, for the second case above, the low-power wake-up signal configuration of the target cell (such as cell 2) is obtained through the broadcast information of the current serving cell (such as cell 1) or the radio resource control RRC cell, and the low-power wake-up signal configuration may be configured at a granularity of each (per) cell or at a granularity of each area (per area).

[0163] Further, when the received low-power synchronization signal does not change, acquiring a synchronization signal / physical broadcast channel block, and determining whether to trigger cell selection or reselection according to the synchronization signal / physical broadcast channel block, includes:

[0164] When the received low-power synchronization signal does not change, the terminal turns on the main receiver or determines whether to turn on the main receiver according to the network configuration;

[0165] When the main receiver is turned on, a synchronization signal / physical broadcast channel block is obtained;

[0166] Whether to trigger cell selection or reselection is determined according to the physical cell identifier in the synchronization signal / physical broadcast channel block.

[0167] Wherein, determining whether to turn on the main receiver according to the network configuration includes:

[0168] When a preset main receiver startup criterion is met, the main receiver is turned on;

[0169] The main receiver activation criteria include at least one of the following:

[0170] The SI validity period exceeds the first duration threshold specified by the network configuration or protocol;

[0171] The duration of starting the low power receiver for measurement exceeds the second duration threshold specified by the network configuration or protocol;

[0172] The low-power wake-up signal listening start time exceeds the third time threshold specified by the network configuration or protocol;

[0173] The low power synchronization signal meets the low power synchronization signal measurement threshold for determining whether to detect a cell change in the network configuration.

[0174] As an optional embodiment, determining whether to trigger cell selection or reselection according to the physical cell identifier in the synchronization signal / physical broadcast channel block includes:

[0175] Determining whether a physical cell identifier in the synchronization signal / physical broadcast channel block changes;

[0176] When the physical cell identifier in the synchronization signal / physical broadcast channel block changes, cell selection or reselection is triggered.

[0177] When the physical cell identifier in the synchronization signal / physical broadcast channel block does not change, the main receiver is turned off, and the low power consumption wake-up signal is listened to by the low power consumption receiver.

[0178] For example, if the low power synchronization signal does not change, the terminal cannot determine whether mobility occurs based on the low power synchronization signal. There may be two situations:

[0179] (1) The low-power synchronization signal does not carry any cell-related information (or the low-power synchronization signal configuration of each cell is the same, and the network may provide a low-power synchronization signal configuration adaptation range, such as a cell list). Although the terminal moves into another cell, it cannot be identified by the LR;

[0180] (2) The terminal does not move at all, so the low-power synchronization signal received by the terminal does not change.

[0181] For case (1), it is necessary for the terminal to perform a cell selection / reselection process to determine the cell to stay in; however, for case (2), the terminal does not need to perform a cell selection / reselection. Therefore, the terminal needs to determine whether to perform a cell selection / reselection by turning on the main receiver. This process may be achieved by one of the following:

[0182] (1) Terminal implementation;

[0183] (2) Based on the network configuration judgment, such as the validity period of SI (System Integrator), and / or, the low-power receiver measurement and / or low-power wake-up signal listening are turned on for a time period exceeding the corresponding time threshold specified by the network configuration or protocol, and / or, based on the low-power synchronization signal measurement threshold provided by the network to determine whether to detect a cell change, if the threshold is met, the terminal turns on the main receiver. Alternatively, a corresponding timer can be set. If the SI is valid, and / or, the low-power receiver measurement and / or low-power wake-up signal listening are turned on, and / or, the timer corresponding to the timer provided by the network to determine whether to detect a cell change times out, the terminal turns on the main receiver.

[0184] After the terminal turns on the main receiver, it obtains the synchronization signal / physical broadcast channel block (SS / PBCHblocks, consisting of the primary synchronization signal (PSS), secondary synchronization signal (SSS) and physical broadcast channel (PBCH), referred to as SSB) (main receiver) of the target cell, and determines whether movement has occurred through the physical cell identifier (PCI) contained in the synchronization signal / physical broadcast channel block. If the physical cell identifier changes, it is considered that movement has occurred, and the cell selection / reselection process is executed. If the physical cell identifier has not changed, the main receiver is turned off, and the low-power receiver continues to measure and listen for low-power wake-up signals.

[0185] Compared with the prior art, the embodiment of the present invention is directed to a terminal performing measurement unloading. When a change in a low-power synchronization signal is detected, a cell selection / reselection is initiated; when no change in the low-power synchronization signal is detected, a synchronization signal / physical broadcast channel block is obtained to determine whether a cell change occurs, thereby triggering cell selection / reselection. Cell selection or reselection based on a low-power synchronization signal can be implemented. In the case of measurement unloading and overlapping coverage of two cells, the problem that when the terminal moves, the terminal does not know that the main receiver has entered another cell, resulting in no actions such as determining a suitable cell or obtaining system messages, can be avoided. The risk of cell selection or reselection failure is reduced, the success rate of cell selection or reselection is increased, and normal communication of the terminal during movement across cells is ensured.

[0186] See also Figure 5 , Figure 5 An embodiment of the present invention provides a structural block diagram of a cell resident device, wherein the cell resident device includes:

[0187] A first signal receiving module 11, configured to receive a low power consumption synchronization signal when the terminal is in measurement unloading;

[0188] A first cell selection / reselection module 12, configured to initiate cell selection or reselection when a received low power synchronization signal changes;

[0189] The second cell selection / reselection module 13 is used to obtain a synchronization signal / physical broadcast channel block when the received low-power synchronization signal does not change, and determine whether to trigger cell selection or reselection according to the synchronization signal / physical broadcast channel block.

[0190] In an optional embodiment, the first cell selection / reselection module 12 includes:

[0191] The first cell selection / reselection unit is used to start the main receiver and perform cell selection / reselection when the received low-power synchronization signal changes.

[0192] In an optional embodiment, the first cell selection / reselection module 12 includes:

[0193] A first judgment unit, configured to judge whether there is first priori information of a target cell when the received low power synchronization signal changes;

[0194] The first prior information includes: a low-power wake-up signal configuration of the target cell, and / or a network indication of whether to obtain system information or a first system message block SIB1 of the target cell; the target cell is a cell that has overlapping coverage with the current serving cell of the terminal;

[0195] The second cell selection / reselection unit is used to start the main receiver and perform cell selection / reselection when the first priori information does not exist.

[0196] In an optional embodiment, the device further includes:

[0197] A second low power consumption wake-up signal configuration acquisition module, used to acquire the low power consumption wake-up signal configuration of the cell after cell selection / reselection;

[0198] The low power signal monitoring module is used to monitor the low power wake-up signal and / or the low power synchronization signal according to the low power wake-up signal configuration.

[0199] In an optional embodiment, the first cell selection / reselection module 12 includes:

[0200] A second judgment unit, configured to determine whether to turn on the main receiver according to second a priori information when the received low-power synchronization signal changes;

[0201] When the main receiver is turned on, at least one of the following is performed:

[0202] Perform cell selection / reselection, camp on a cell that meets the cell selection / reselection criteria and receive paging;

[0203] Acquire system information of a target cell, select / reselect a cell according to the system information, reside in the cell after the cell selection / reselection and receive paging;

[0204] The first system information block SIB1 of the target cell or the paging message reception related settings are obtained, and the target cell is resided and the paging is received.

[0205] In an optional embodiment, the second prior information includes: system information of the last camped cell and the low power consumption wake-up signal configuration of the last camped cell stored by the terminal;

[0206] The second judging unit comprises:

[0207] A low-power wake-up signal listening subunit, configured to perform low-power wake-up signal listening according to the low-power wake-up signal configuration of the target cell when the low-power wake-up signal configuration of the target cell is different from the low-power wake-up signal configuration of the last camped cell; wherein the low-power wake-up signal configuration of the target cell is indicated by the network or acquired by the terminal;

[0208] The main receiver start-up subunit is used to start the main receiver after detecting the corresponding low-power consumption wake-up signal.

[0209] In an optional embodiment, the device further includes:

[0210] A second low-power wake-up signal configuration acquisition module, used to acquire the low-power wake-up signal configuration of the target cell through the broadcast information of the current serving cell or the dedicated signaling of the radio resource control;

[0211] The low power consumption wake-up signal configuration of the target cell is configured on a per-cell basis or on a per-area basis.

[0212] In an optional embodiment, the second cell selection / reselection module 13 includes:

[0213] A third determination unit, configured to enable the terminal to enable the main receiver or determine whether to enable the main receiver according to a network configuration when the received low-power synchronization signal does not change;

[0214] A synchronization signal / physical broadcast channel block acquisition unit, configured to acquire a synchronization signal / physical broadcast channel block after the main receiver is turned on;

[0215] The fourth judgment unit is used to determine whether to trigger cell selection or reselection according to the physical cell identifier in the synchronization signal / physical broadcast channel block.

[0216] In an optional embodiment, the fourth determination unit includes:

[0217] A physical cell identifier determination subunit, used to determine whether the physical cell identifier in the synchronization signal / physical broadcast channel block has changed;

[0218] The trigger subunit is used to trigger cell selection or reselection when the physical cell identifier in the synchronization signal / physical broadcast channel block changes.

[0219] The main receiver shut down subunit is used to shut down the main receiver when the physical cell identifier in the synchronization signal / physical broadcast channel block does not change, and listen to the low power consumption wake-up signal through the low power consumption receiver.

[0220] In an optional embodiment, determining whether to turn on the main receiver according to the network configuration includes:

[0221] When a preset main receiver startup criterion is met, the main receiver is turned on;

[0222] The main receiver activation criteria include at least one of the following:

[0223] The SI validity period exceeds the first duration threshold specified by the network configuration or protocol;

[0224] The duration of starting the low power receiver for measurement exceeds the second duration threshold specified by the network configuration or protocol;

[0225] The low-power wake-up signal listening start time exceeds the third time threshold specified by the network configuration or protocol;

[0226] The low power synchronization signal meets the low power synchronization signal measurement threshold for determining whether to detect a cell change in the network configuration.

[0227] In an optional embodiment, the device further includes:

[0228] A low power synchronization signal change determination module, used to determine that the received low power synchronization signal has changed when a preset low power synchronization signal determination criterion is met;

[0229] The low power synchronization signal judgment criteria include at least one of the following:

[0230] Transmission change of cell identification information in the received low power synchronization signal;

[0231] The received low power synchronization signal uses a different sequence.

[0232] In an optional embodiment, the device further includes:

[0233] The third cell selection or reselection module is used to measure the current serving cell and neighboring cells of the terminal according to the network configuration when the terminal is in measurement relaxation, and to select or reselect the cell according to the S criterion and / or the R criterion.

[0234] In an optional embodiment, the device further includes:

[0235] The measurement relaxation or measurement offloading determination module is used to make a measurement relaxation or measurement offloading determination according to the criteria and / or thresholds related to measurement relaxation and measurement offloading specified by the network configuration and / or protocol.

[0236] It should be noted that the working process of each module in the cell residence device described in the embodiment of the present invention can refer to the working process of the cell residence method described in the above embodiment, and the technical effect achieved is the same as the cell residence method described in the above embodiment, which will not be repeated here.

[0237] See also Figure 6 , Figure 6 2 is a block diagram of a cell resident device provided in an embodiment of the present invention. The cell resident device includes a processor 21, a memory 22, and a computer program stored in the memory 22 and executable on the processor 21. When the processor 21 executes the computer program, the steps in the above-mentioned cell resident method embodiments are implemented, such as steps S11 to S13.

[0238] Exemplarily, the computer program may be divided into one or more modules / units, which are stored in the memory 22 and executed by the processor 21 to implement the present invention. The one or more modules / units may be a series of computer program instruction segments capable of implementing specific functions, which are used to describe the execution process of the computer program in the cell-resident device.

[0239] The cell resident device may include, but is not limited to, a processor 21 and a memory 22. Those skilled in the art will appreciate that the schematic diagram is merely an example of a cell resident device and does not constitute a limitation on the cell resident device, and may include more or fewer components than shown in the diagram, or a combination of certain components, or different components, for example, the cell resident device may also include an input / output device, a network access device, a bus, etc.

[0240] The processor 21 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc. The processor 21 is the control center of the cell-resident device, and uses various interfaces and lines to connect various parts of the entire cell-resident device.

[0241] The memory 22 can be used to store the computer program and / or module, and the processor 21 realizes various functions of the cell resident device by running or executing the computer program and / or module stored in the memory 22, and calling the data stored in the memory 22. The memory 22 can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area can store data created according to the use of the mobile phone (such as audio data, a phone book, etc.), etc. In addition, the memory 22 can include a high-speed random access memory, and can also include a non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (SecureDigital, SD) card, a flash card (Flash Card), at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0242] Wherein, if the module / unit integrated in the cell resident device is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, the present invention implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor 21. Wherein, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, U disk, mobile hard disk, disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electrical carrier signal, telecommunication signal and software distribution medium, etc.

[0243] It should be noted that the device embodiments described above are merely schematic, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. In addition, in the accompanying drawings of the device embodiments provided by the present invention, the connection relationship between the modules indicates that there is a communication connection between them, which may be specifically implemented as one or more communication buses or signal lines. A person of ordinary skill in the art may understand and implement it without paying any creative effort.

[0244] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, many improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A cell residence method, characterized in that: Applied to terminals, including: When the terminal is in measurement offloading, receiving a low-power synchronization signal; When the received low-power synchronization signal changes, cell selection or reselection is initiated; When the received low-power synchronization signal does not change, a synchronization signal / physical broadcast channel block is acquired, and it is determined whether to trigger cell selection or reselection according to the synchronization signal / physical broadcast channel block.

2. The cell residence method according to claim 1, characterized in that: When the received low power synchronization signal changes, initiating cell selection or reselection includes: When the received low-power synchronization signal changes, the main receiver is turned on and cell selection / reselection is performed.

3. The cell residence method according to claim 2, characterized in that: When the received low-power synchronization signal changes, turning on the main receiver and performing cell selection / reselection includes: When the received low power synchronization signal changes, determining whether first priori information of the target cell exists; The first a priori information includes: a low-power wake-up signal configuration of the target cell, and / or a network indication of whether to obtain system information or a first system message block SIB1 of the target cell; When the first a priori information does not exist, the primary receiver is turned on and cell selection / reselection is performed.

4. The cell residence method according to claim 2 or 3, characterized in that: The method further comprises: Get the low power wake-up signal configuration of the cell after cell selection / reselection; According to the low power consumption wake-up signal configuration, a low power consumption wake-up signal and / or a low power consumption synchronization signal is listened to.

5. The cell residence method according to claim 1, characterized in that: When the received low power synchronization signal changes, initiating cell selection or reselection includes: When the received low-power synchronization signal changes, determining whether to turn on the main receiver according to the second prior information; When the main receiver is turned on, at least one of the following is performed: Perform cell selection / reselection, camp on a cell that meets the cell selection / reselection criteria and receive paging; Acquire system information of a target cell, select / reselect a cell according to the system information, reside in the cell after the cell selection / reselection and receive paging; The first system information block SIB1 of the target cell or the paging message reception related settings are obtained, and the target cell is resided and the paging is received.

6. The cell residence method according to claim 5, characterized in that: The second prior information includes: system information of the last camped cell stored by the terminal and the low power consumption wake-up signal configuration of the last camped cell; The step of determining whether to turn on the main receiver according to the second prior information includes: When the low-power wake-up signal configuration of the target cell is different from the low-power wake-up signal configuration of the last camped cell, low-power wake-up signal monitoring is performed according to the low-power wake-up signal configuration of the target cell; wherein the low-power wake-up signal configuration of the target cell is indicated by the network or acquired by the terminal; When the corresponding low-power wake-up signal is detected, the main receiver is turned on.

7. The cell residence method according to claim 6, characterized in that: The method further comprises: Obtain the low-power wake-up signal configuration of the target cell through the broadcast information of the current serving cell or the dedicated signaling of the radio resource control; The low power consumption wake-up signal configuration of the target cell is configured on a per-cell basis or on a per-area basis.

8. The cell residence method according to claim 1, characterized in that: When the received low-power synchronization signal does not change, acquiring a synchronization signal / physical broadcast channel block, and determining whether to trigger cell selection or reselection according to the synchronization signal / physical broadcast channel block, includes: When the received low-power synchronization signal does not change, the terminal turns on the main receiver or determines whether to turn on the main receiver according to the network configuration; When the main receiver is turned on, a synchronization signal / physical broadcast channel block is obtained; Whether to trigger cell selection or reselection is determined according to the physical cell identifier in the synchronization signal / physical broadcast channel block.

9. The cell residence method according to claim 8, characterized in that: The determining whether to trigger cell selection or reselection according to the physical cell identifier in the synchronization signal / physical broadcast channel block includes: Determining whether a physical cell identifier in the synchronization signal / physical broadcast channel block changes; When a physical cell identifier in the synchronization signal / physical broadcast channel block changes, triggering cell selection or reselection; When the physical cell identifier in the synchronization signal / physical broadcast channel block does not change, the main receiver is turned off, and the low power consumption wake-up signal is listened to by the low power consumption receiver.

10. The cell residence method according to claim 8, characterized in that: The determining whether to start the main receiver according to the network configuration includes: When a preset main receiver startup criterion is met, the main receiver is turned on; The main receiver activation criteria include at least one of the following: The SI validity period exceeds the first duration threshold specified by the network configuration or protocol; The duration of starting the low power receiver for measurement exceeds the second duration threshold specified by the network configuration or protocol; The low-power wake-up signal listening start time exceeds the third time threshold specified by the network configuration or protocol; The low power synchronization signal meets the low power synchronization signal measurement threshold for determining whether to detect a cell change in the network configuration.

11. The cell residence method according to claim 1, characterized in that: The method further comprises: When a preset low power synchronization signal judgment criterion is met, determining that the received low power synchronization signal has changed; The low power synchronization signal judgment criteria include at least one of the following: Transmission change of cell identification information in the received low power synchronization signal; The received low power synchronization signal uses a different sequence.

12. The cell residence method according to claim 1, characterized in that: The method further comprises: When the terminal is in measurement relaxation, the current serving cell and neighboring cells of the terminal are measured according to the network configuration, and cell selection or reselection is performed according to the S criterion and / or the R criterion.

13. The cell residence method according to claim 1 or 12, characterized in that: The method further comprises: The measurement relaxation or measurement offloading decision is made according to the criteria and / or thresholds related to the measurement relaxation and measurement offloading specified by the network configuration and / or protocol.

14. A cell resident device, characterized in that: include: A first signal receiving module, configured to receive a low-power synchronization signal when the terminal is in measurement unloading; A first cell selection / reselection module, configured to initiate cell selection or reselection when a received low-power synchronization signal changes; The second cell selection / reselection module is used to obtain a synchronization signal / physical broadcast channel block when the received low-power synchronization signal does not change, and determine whether to trigger cell selection or reselection according to the synchronization signal / physical broadcast channel block.

15. A cell resident device, characterized in that: include: A processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein the processor implements the cell camping method according to any one of claims 1 to 13 when executing the computer program.

16. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, wherein when the computer program is executed, the device where the computer-readable storage medium is located is controlled to execute the cell camping method according to any one of claims 1 to 13.

17. A computer program product comprising a computer program / instructions, characterized in that When the computer program / instruction is executed by a processor, the cell camping method according to any one of claims 1 to 13 is implemented.

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