WO2023202263A1 - 一种通信方法及装置 - Google Patents

一种通信方法及装置 Download PDF

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Publication number
WO2023202263A1
WO2023202263A1 PCT/CN2023/081068 CN2023081068W WO2023202263A1 WO 2023202263 A1 WO2023202263 A1 WO 2023202263A1 CN 2023081068 W CN2023081068 W CN 2023081068W WO 2023202263 A1 WO2023202263 A1 WO 2023202263A1
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WO
WIPO (PCT)
Prior art keywords
cell
terminal device
paging
signal strength
paging messages
Prior art date
Application number
PCT/CN2023/081068
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English (en)
French (fr)
Inventor
卓超
杨帆
Original Assignee
华为技术有限公司
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Publication of WO2023202263A1 publication Critical patent/WO2023202263A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085—Hand-off measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0248—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal dependent on the time of the day, e.g. according to expected transmission activity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like

Definitions

  • the present application relates to the field of communication, and in particular, to a communication method and device.
  • terminal equipment can camp in a cell, and the cell in which it camps can be called a camped cell or a serving cell.
  • the terminal device can receive paging messages from the serving cell; when the terminal device is in the connected state, the terminal device can interact with the serving cell. For example, the terminal device receives paging messages from the serving cell. messages and/or downlink data, the terminal device sends uplink data to the serving cell, etc.
  • the terminal device When the terminal device selects a serving cell, the terminal device can perform cell search. When the target cell meets the camping conditions, the terminal device can initiate camping on the target cell.
  • the terminal equipment selects a serving cell, it only considers whether the target cell meets the residency conditions, and the standby power consumption of the terminal equipment is high. Therefore, a method for reducing the standby power consumption of terminal equipment is needed.
  • This application provides a communication method and device for reducing the standby power consumption of terminal equipment.
  • embodiments of the present application provide a communication method.
  • the method includes: when the first terminal device enters the static mode, the first terminal device may receive system information from at least one cell and measure the signal strength of the at least one cell; wherein the system information from the at least one cell includes information for Information indicating the paging detection period of any cell in at least one cell. Then, the first terminal device may determine a candidate cell set according to the paging detection cycle and signal strength of at least one cell, and camp on the first cell in the candidate cell set; wherein the candidate cell set may include: at least one cell The cell whose signal strength is greater than or equal to the first threshold and has the largest paging detection period.
  • the first terminal device can select a cell whose signal strength is greater than or equal to the first threshold and has the largest paging detection period to camp on, so that it can at least use the largest paging detection period to detect paging messages, thereby reducing the Standby power consumption of the first terminal device.
  • the first terminal device after camping on the first cell, can detect whether the first cell where it is camping is a cell configured to send multiple paging messages; when the first cell is not configured to send multiple paging messages, When sending a paging message, the first terminal device may camp on the next cell in the candidate cell set and detect whether it is a cell configured to send multiple paging messages. The first terminal device may camp on a target cell, which is a cell configured to send multiple paging messages in the candidate cell set.
  • the first terminal device can camp on a target cell configured to send multiple paging messages in the candidate cell set.
  • the first terminal device can further lengthen the period for detecting paging messages, thereby further reducing the power consumption of the first terminal device.
  • the first terminal device can detect whether the first cell where it is camped is a cell configured to send multiple paging messages through the following method: when receiving the paging message in M consecutive paging detection cycles of the first cell, When M paging messages from the first cell are received, and each received paging message contains the identification information of the second terminal device, the first terminal device may determine that the first cell is configured to send multiple paging messages. cell; when M paging messages from the first cell are not received in M consecutive paging detection periods of the first cell, the first terminal device may determine that the first cell is not a cell configured to send multiple paging messages. ; Among them, M is an integer greater than or equal to 2.
  • the first terminal device can determine whether the first cell is a cell configured to send multiple paging messages by detecting paging messages, and the operation is relatively simple.
  • the first terminal device may receive a paging message from the target cell according to a first period; where the first period is N times the paging detection period of the target cell. , N is an integer greater than or equal to 2.
  • the first terminal device can further lengthen the period of detecting paging messages after camping on the candidate cell set and configuring a target cell for sending multiple paging messages, thereby further reducing the power consumption of the first terminal device.
  • the first terminal device may re-camp on the first cell.
  • the first cell may be any cell in the candidate cell set, or it may be a cell of the standard with the smallest standby power consumption of the first terminal device in the candidate cell set, or it may be the cell with the highest signal strength in the candidate cell set, It may also be the cell with the highest standard in the candidate cell set.
  • the first terminal device can still camp on the cell whose signal strength is greater than or equal to the first threshold and has the largest paging detection period, thereby The maximum paging detection period can be used to detect the paging message, thereby reducing the standby power consumption of the first terminal device.
  • the first terminal device may only detect the signal strength of the target cell.
  • the first terminal device In the static mode, the first terminal device has no mobility requirements and does not need to perform cell reselection or cell switching. Through this design, in the static mode, the first terminal device only detects the signal strength of the target cell (ie, the current serving cell) and does not detect the signal strength of neighboring cells, thereby reducing the power consumption of the first terminal device.
  • the first terminal device can detect the signal strength of the target cell through the following method: the first terminal device uses the third period to detect the signal strength of the target cell; when the signal strength of the target cell is equal within the second period of time, When it is greater than or equal to the second threshold, the first terminal device may use a fourth period to detect the signal strength of the target cell; wherein the fourth period is greater than the third period.
  • the first terminal device when the first terminal device detects that the signal strength of the target cell continues to be greater than or equal to the second threshold within the second time period, the first terminal device can use a larger period to detect the signal strength of the target cell, thereby pulling The time interval for detecting the signal strength of the target cell is long; in this way, the time for the first terminal device to stop detecting the signal strength of the target cell is also longer, thereby reducing the power consumption of the first terminal device.
  • the first terminal device when the first terminal device is in the RRC connected state, after detecting the signal strength of the target cell, the first terminal device may prevent the reporting of the measurement report.
  • the first terminal device In the static mode, the first terminal device has no mobility requirements; thus, even if the first terminal device is in the RRC connected state, cell switching is not required.
  • the first terminal device does not report a measurement report, thereby reducing the power consumption of the first terminal device and saving resources for transmitting measurement reports.
  • the first terminal device can also avoid unnecessary triggering of the base station to initiate cell switching.
  • the first terminal device may determine the first set according to the signal strength of at least one cell; wherein the first set may include: the signal strength in at least one cell is greater than Or a cell equal to the first threshold; after camping in the first cell, when the first terminal equipment exits the static mode, the first terminal equipment Can camp on the fourth cell with the highest standard in the first set.
  • the first terminal device after exiting the static mode, the first terminal device can quickly camp on the fourth cell with the highest standard in the previously determined first set without re-measurement of the cell, thereby reducing the need to change the resident cell (also called is the time for cell reselection).
  • the first terminal device may receive a paging message from the target cell according to the paging detection cycle of the target cell. After the first terminal equipment exits the static mode, if it still receives paging messages from the target cell at multiples of the paging detection period of the target cell, it is possible that the first terminal equipment does not receive paging messages from the target cell due to the movement of the first terminal equipment. .
  • the first terminal device uses the paging detection period of the target cell to receive the paging message from the target cell, which can increase the possibility that the first terminal device receives the paging message from the target cell.
  • the first terminal device after camping on the target cell, when the first terminal device is in the RRC connected state and detects that the first terminal device has no uplink data or downlink data, the first terminal device may release the first terminal device. RRC connection between the device and the target cell. Through this design, the first terminal device can actively initiate the release of the RRC connection between the first terminal device and the target cell.
  • inventions of the present application provide a communication device, which can be used to implement the method of the first aspect.
  • This device may include:
  • a communication unit configured to receive system information from at least one cell when the communication device enters the static mode; wherein the system information from at least one cell includes a paging detection cycle indicating a paging detection period of any cell in the at least one cell. information;
  • a processing unit configured to: measure the signal strength of at least one cell; and determine a set of candidate cells based on the paging detection cycle and signal strength of at least one cell.
  • the candidate cell set includes: a cell whose signal strength is greater than or equal to the first threshold in at least one cell and has the largest paging detection period; camping on the first cell, where the first cell is a cell in the candidate cell set.
  • the processing unit is further configured to: after camping on the first cell, detect whether the first cell where the camped on is a cell configured to send multiple paging messages; when the first cell is not configured to send multiple paging messages, When receiving a paging message, camp on the next cell in the candidate cell set and detect whether it is a cell configured to send multiple paging messages; camp on the target cell, and the target cell will send multiple paging messages for the configuration in the candidate cell set. The cell that calls the message.
  • the processing unit is specifically configured to: when M paging messages from the first cell are received through the communication unit in M consecutive paging detection periods of the first cell, and each received When the paging messages all contain the identification information of the second terminal device, the first cell is determined to be the cell configured to send multiple paging messages; when the paging message is not received through the communication unit in M consecutive paging detection cycles of the first cell.
  • M paging messages from the first cell determine that the first cell is not a cell configured to send multiple paging messages; where M is an integer greater than or equal to 2.
  • the communication unit is also configured to: after camping on the target cell, receive a paging message from the target cell according to a first cycle; wherein the first cycle is N of the paging detection cycle of the target cell. times, N is an integer greater than or equal to 2.
  • the processing unit is specifically configured to: when the candidate cell set does not include a cell configured to send multiple paging messages, camp on the first cell again.
  • the processing unit is also configured to: after camping on the target cell, only detect the signal strength of the target cell.
  • the processing unit is also configured to: when the communication device is in the RRC connection state, during the detection purpose After measuring the signal strength of the marked cell, prevent the reporting of measurement reports.
  • the processing unit is further configured to: before camping on the first cell, determine a first set according to the signal strength of at least one cell, wherein the first set includes: the signal strength in at least one cell is greater than Or a cell equal to the first threshold; after camping on the first cell, when the communication device exits the static mode, it camps on the fourth cell with the highest standard in the first set.
  • the communication unit is also configured to receive paging messages from the target cell according to the paging detection cycle of the target cell when the communication device exits the static mode after camping on the target cell.
  • the processing unit is also configured to: after camping on the target cell, when the communication device is in the RRC connection state and detects that the communication device has no uplink data and downlink data, release the connection between the communication device and the target cell. RRC connection between.
  • embodiments of the present application provide a communication device, which may be a terminal or a chip for a terminal.
  • the device has the function of implementing the method of the first aspect or any possible implementation method thereof. This function can be implemented by hardware, or it can be implemented by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • embodiments of the present application provide a communication device, including a processor and a memory, and optionally, a transceiver.
  • the memory is used to store computer programs or instructions
  • the processor is used to call and run the computer program or instructions from the memory.
  • the wireless communication device performs the above-mentioned first aspect. method or any of its possible implementation methods.
  • processors there are one or more processors and one or more memories.
  • the memory can be integrated with the processor, or the memory can be provided separately from the processor.
  • the memory may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • embodiments of the present application provide a communication system, including: a terminal device for performing the method provided in the first aspect, and a base station for communicating with the terminal device.
  • inventions of the present application further provide a computer program product.
  • the computer program product includes: a computer program (which may also be called a code, or an instruction).
  • a computer program which may also be called a code, or an instruction.
  • embodiments of the present application further provide a computer-readable storage medium.
  • a computer program is stored in the computer-readable storage medium. When the computer program is executed by a computer, it causes the computer to execute the above-mentioned first step. methods provided.
  • embodiments of the present application further provide a chip, which is used to read a computer program stored in a memory and execute the method provided in the first aspect.
  • embodiments of the present application further provide a chip system.
  • the chip system includes a processor and is used to support a computer device in implementing the method provided in the first aspect.
  • the chip system further includes a memory, and the memory is used to store necessary programs and data of the computer device.
  • the chip system can be composed of chips or include chips and other discrete devices.
  • embodiments of the present application further provide a wireless communication device, including: an interface circuit and a processing circuit.
  • Interface circuits may include input circuits and output circuits.
  • the processing circuit is configured to receive signals through the input circuit and transmit signals through the output circuit, so that the method in the first aspect and any of the possible implementations is implemented.
  • the wireless communication device can be a chip
  • the input circuit can be an input pin
  • the output circuit can be an output pin
  • the processing circuit can be a transistor, a gate circuit, a flip-flop, and various logic circuits.
  • the input signal received by the input circuit may be received and input by, for example, but not limited to, the receiver, and the signal output by the output circuit may be, for example, but not limited to, output to and transmitted by the transmitter, and the input circuit and the output A circuit may be the same circuit that functions as an input circuit and an output circuit at different times.
  • the embodiments of this application do not limit the specific implementation methods of the processor and various circuits.
  • the wireless communication device may be a wireless communication device, that is, a computer device that supports wireless communication functions.
  • the wireless communication device may be a terminal such as a smartphone, or a wireless access network device such as a base station.
  • System on chip can also be called system on chip (SoC), or simply SoC chip.
  • Communication chips may include baseband processing chips and radio frequency processing chips. Baseband processing chips are sometimes also called modems or baseband chips. Radio frequency processing chips are sometimes also called radio frequency transceivers (transceivers) or radio frequency chips.
  • some or all of the communication chips can be integrated inside the SoC chip.
  • the baseband processing chip is integrated into the SoC chip, and the radio frequency processing chip is not integrated with the SoC chip.
  • the interface circuit may be a radio frequency processing chip in the wireless communication device, and the processing circuit may be a baseband processing chip in the wireless communication device.
  • the wireless communication device may be some components in the wireless communication equipment, such as integrated circuit products such as system chips or communication chips.
  • the interface circuit may be an input/output interface, interface circuit, output circuit, input circuit, pin or related circuit on the chip or chip system, etc.
  • a processor may also be embodied as a processing circuit or logic circuit.
  • Figure 1 is an architecture diagram of a communication system provided by an embodiment of the present application.
  • Figure 2 is a flow chart of a communication method provided by an embodiment of the present application.
  • Figure 3 is a flow chart of another communication method provided by an embodiment of the present application.
  • Figure 4 is a schematic diagram of the UE in the idle state and the connected state respectively in another communication method provided by the embodiment of the present application;
  • Figure 5 is a structural diagram of a communication device provided by an embodiment of the present application.
  • Figure 6 is a structural diagram of a communication device provided by an embodiment of the present application.
  • This application provides a communication method and device to reduce the standby power consumption of terminal equipment.
  • the method and the device are based on the same technical concept. Since the principles of solving the problem are similar, the implementation of the device and the method can be referred to each other, and the repeated points will not be repeated.
  • Base station is a device in a communication system that connects terminal equipment to a wireless network.
  • the base station can also be called a network device, a radio access network (RAN) node (or device), an access network (AN) node (or device), or access point (AP).
  • RAN radio access network
  • AN access network
  • AP access point
  • base stations are: new generation Node B (gNB), transmission and reception points (transmission reception point, TRP), evolved Node B (evolved Node B, eNB), Node B (Node B, NB), home base station (for example, home evolved NodeB, or home Node B, HNB), base band unit (base band unit, BBU), enterprise long term evolution (long term evolution, LTE) discrete narrowband aggregation (Enterprise LTE discrete spectrum aggregation, eLTE-DSA) base station, etc.
  • gNB new generation Node B
  • TRP transmission reception point
  • eNB evolved Node B
  • Node B Node B
  • home base station for example, home evolved NodeB, or home Node B, HNB
  • base band unit base band unit
  • BBU base band unit
  • LTE long term evolution
  • LTE long term evolution
  • eLTE-DSA enterprise LTE discrete narrowband aggregation
  • the base station may include a centralized unit (CU) node and a distributed unit (DU) node.
  • CU centralized unit
  • DU distributed unit
  • This structure separates the protocol layer of the eNB in the LTE system. Some of the protocol layer functions are placed under centralized control by the CU. The remaining part or all of the protocol layer functions are distributed in the DU, and the CU centrally controls the DU.
  • Terminal equipment is a device that provides voice and/or data connectivity to users.
  • Terminal equipment can also be called user equipment (UE), mobile station (MS), mobile terminal (MT), etc.
  • UE user equipment
  • MS mobile station
  • MT mobile terminal
  • the terminal device can be a handheld device with wireless connection function, various vehicle-mounted devices, roadside units, etc.
  • some examples of terminal devices are: mobile phones, tablets, laptops, PDAs, mobile Internet devices (MID), smart point of sale terminals (POS), and wearable devices.
  • VR virtual reality
  • AR augmented reality
  • wireless terminals in industrial control wireless terminals in self-driving, remote medical surgery
  • Wireless terminals in smart grid wireless terminals in transportation safety, wireless terminals in smart city, wireless terminals in smart home, various Smart meters (smart water meters, smart electricity meters, smart gas meters), eLTE-DSA UE, equipment with integrated access and backhaul (IAB) capabilities, vehicle-mounted electronic control unit (ECU) etc.
  • ECU electronice control unit
  • T-BOX telematics boxes
  • Radio resource control (RRC) connection status In the mobile communication system, the RRC connection state of the terminal device includes: RRC connected state (RRC_connected, referred to as connected state), RRC idle state (RRC_idle, referred to as idle state).
  • the terminal device When the terminal device is in the idle state, the RRC connection between the terminal device and the base station is disconnected, the base station and the terminal device no longer save the terminal device context information, and the terminal device can receive broadcast information (such as system information) and paging messages sent by the base station.
  • broadcast information such as system information
  • the terminal device When the terminal device is in the connected state, there is an RRC connection between the terminal device and the base station, and the two can communicate through the RRC connection.
  • the terminal device In the RRC connection state, if cell handover failure, wireless link failure, RRC connection reconfiguration (RRC connection reconfiguration) process failure, etc. occur, the terminal device will trigger the RRC connection reestablishment process.
  • Radio access technology is the communication technology used in mobile communication systems.
  • the RAT may include, but is not limited to: 4th generation (4G), 5th generation (5G), world interoperability for microwave access (WiMAX), etc., and may also include Future communication technology, such as the sixth generation ( 6th generation, 6G) mobile communication system.
  • a system using 5G wireless access technology can be called a 5G mobile communication system, and a system using 4G wireless access technology can be called a 4G mobile communication system.
  • RAT can also be called a format.
  • the number of nouns means “singular noun or plural noun", that is, “one or more”, unless otherwise specified.
  • At least one means one or more
  • plural means two or more.
  • “and/or” describes the association The association relationship of objects means that there can be three relationships.
  • a and/or B can mean: A exists alone, A and B exist simultaneously, and B exists alone.
  • At least one of the following or similar expressions refers to any combination of these items (items), including any combination of a single item (items) or a plurality of items (items).
  • Figure 1 shows the structure of a mobile communication system to which the method provided by the embodiment of the present application is applicable.
  • the mobile communication system includes: a base station and terminal equipment.
  • a base station is an entity on the network side that can receive and transmit wireless signals. It is responsible for providing wireless access-related services to terminal devices within its coverage, implementing physical layer functions, resource scheduling, wireless resource management, and quality of service. , QoS) management, wireless access control and mobility management functions. Through the base station, the terminal equipment can access the core network and finally be connected to the data network to realize the services of the terminal equipment.
  • Terminal equipment is an entity on the user side that can receive and transmit wireless signals. It can access the network by accessing a cell managed by a base station. Terminal devices can be various devices that provide voice and/or data connectivity to users, such as vehicle-mounted devices, smartphones, etc. The terminal equipment and the base station are connected through the Uu interface to realize communication between the two.
  • the base station provides access and communication services to terminal devices through the managed cells.
  • the functions of the network-side base station are recorded as the functions of the cell. It should be understood that the operations and steps performed by the cell in the subsequent description are actually operations and steps performed by the base station that manages the cell.
  • each base station is responsible for managing at least one cell, and each cell uses corresponding spectrum resources to provide communication services for terminal devices.
  • base station A manages cell 1 and cell 2
  • base station B manages cell 3.
  • base station A configures spectrum resources in carrier 1 for cell 1, and configures spectrum resources of carrier 2 for cell 2
  • base station B configures spectrum resources in carrier 3 for cell 3.
  • the cell that is providing access and communication services to the terminal device is called the serving cell of the terminal device, and the cells adjacent to the location of the serving cell may be called neighboring cells.
  • the mobile communication system shown in Figure 1 is used as an example and does not limit the mobile communication systems to which the methods provided by the embodiments of the present application are applicable.
  • the embodiments of the present application can also be applied to various types and formats of communication systems, such as: 4G communication systems, 5G communication systems, sixth generation (The 6th Generation, 6G) communication systems, and other communication standards that will evolve in the future.
  • System long-term evolution - Internet of Vehicles (LTE-vehicle, LTE-V) system, etc.
  • the terminal device When the terminal device selects a cell to camp on, the terminal device can perform cell search. When the target cell meets the camping conditions, the terminal device can initiate camping on the target cell.
  • the non-access stratum (NAS) layer of the terminal device may initiate a search for cells of a specified format (eg, 5G) (which may also be called a network search for a specified format).
  • the NAS layer of the terminal device sends the information required for camping (for example, the designated public land mobile network (PLMN) and/or tracking area code (TAC)) to the access layer of the terminal device.
  • the access layer for example, RRC layer
  • the terminal device performs cell search based on the information required for camping, for example, for the indicators corresponding to the PLMN and TAC. Customized target neighborhoods for search. If the target cell meets the camping conditions, the RRC layer of the terminal device can initiate camping on the target cell.
  • the terminal equipment when the terminal equipment selects a cell to camp on, it only considers whether the cell meets the camping conditions, and does not consider the power consumption of the terminal equipment accessing the cell. Therefore, after the terminal equipment camps on the selected cell, the standby power Consumption may be higher.
  • the terminal device After the terminal device camps on the serving cell, the terminal device receives a system message from the serving cell, and the system message contains the discontinuous reception (DRX) cycle of the serving cell.
  • the access layer of the terminal device can parse the DRX cycle and send the DRX cycle to the physical layer. Then, the physical layer of the terminal device can detect the paging message from the serving cell according to the DRX cycle. In other words, after the terminal device camps on the serving cell and receives the system message from the serving cell, it can detect the paging message of the serving cell according to the DRX cycle in the system message.
  • Some cells can be configured to send multiple paging messages. For example, some cells can repeatedly send the same called paging message in multiple consecutive DRX cycles. When the terminal device receives one of the called paging messages, it can display the incoming call. Currently, even if the serving cell is a cell configured to send multiple paging messages, the terminal device still uses the DRX cycle to detect the paging message, thereby increasing the power consumption of the terminal device.
  • the terminal device When the terminal device is in the idle state, after camping on the serving cell, the terminal device can continuously perform cell reselection by measuring the signal strength of the serving cell and neighboring cells in order to camp on a cell with higher priority or better channel quality. community.
  • the neighboring cells may include at least one of the following: same-frequency neighboring cells, inter-frequency neighboring cells, and inter-system neighboring cells. Among them, the neighboring cells of different systems are cells that use different RATs from the serving cell.
  • the terminal device When the terminal device is stationary and in an idle state, if the signal strength of the terminal device's serving cell exceeds the first set strength threshold, the terminal device has no mobility requirements and does not need to reselect a cell. However, when the above method is used, in this case, the terminal equipment still needs to measure the signal strength of the neighboring cell, thereby increasing the power consumption of the terminal equipment.
  • the base station can send measurement configuration information to the terminal device through the RRC connection reconfiguration message.
  • the terminal device measures the signal strength of the serving cell and neighboring cells according to the measurement configuration information issued by the base station, and reports the measurement results. Then, the base station can decide whether to perform handover based on the measurement results.
  • the terminal device When the terminal device is stationary and in a connected state, if the signal strength of the terminal device's serving cell exceeds the second set strength threshold, the terminal device has no mobility requirements and does not need to perform cell switching. However, when using the above method, in this case, the terminal device still needs to measure the signal strength of the serving cell and neighboring cells and report the measurement report, thereby increasing the power consumption of the terminal device.
  • the release of RRC connections is initiated by the base station.
  • the base station does not know when the terminal device has finished sending the uplink data. In this way, after the data transmission between the terminal device and the base station is completed, the RRC connection cannot be released in time, resulting in a waste of resources.
  • the embodiment of the present application provides a communication method, which can be applied to the communication system shown in Figure 1. Referring to the flow chart shown in Figure 2, the flow of this method will be described in detail below.
  • S201 The first terminal device enters the static mode.
  • the application layer of the first terminal device may instruct the first terminal device to enter the silent mode when it is determined that the first terminal device meets the conditions for entering the silent mode. For example, when determining that the first terminal device meets the conditions for entering the silent mode, the application layer of the first terminal device may send an instruction to the protocol stack (Modem) of the first terminal device for instructing the first terminal device to enter the silent mode.
  • Modem protocol stack
  • the conditions for entering static mode may include at least one of the following:
  • Condition 1 Within the third period of time, the position of the first terminal device remains unchanged
  • Condition 2 Within the fourth period of time, the first terminal device does not detect the user's operation on the first terminal device;
  • the following describes how the application layer of the first terminal device determines that the first terminal device satisfies conditions 1 to 3.
  • the application layer of the first terminal device may obtain the preconfigured third duration or the third duration indicated by other communication devices (eg, base stations, etc.).
  • the application layer of the first terminal device can obtain the position of the first terminal device through the position detection device of the first terminal device (for example, a global positioning system (GPS) locator); or detect the first terminal device through a motion sensor or other device. Whether the location of the terminal device has changed.
  • the application layer of the first terminal device may determine that the first terminal device satisfies condition 1; otherwise, the application layer of the first terminal device The layer may determine that the first terminal device does not satisfy condition 1.
  • the application layer of the first terminal device may obtain the preconfigured fourth duration or the fourth duration indicated by other communication devices (eg, base stations, etc.).
  • the application layer of the first terminal device can obtain the user's operation on the first terminal device through the input and output device of the first terminal device (for example, a touch screen, volume keys and other control keys).
  • the application layer of the first terminal device may determine that the first terminal device satisfies condition 2; otherwise, the first terminal device The application layer of the device may determine that the first terminal device does not satisfy condition 2.
  • the application layer of the first terminal device may obtain the preconfigured fifth duration or the fifth duration indicated by other communication devices (eg, base stations, etc.).
  • the application layer of the first terminal device can detect the working status of each application program in the first terminal device.
  • the application layer of the first terminal device detects that the applications in the first terminal device are all closed or in a standby state (in other words, within the fifth time period, the user of the first terminal device does not use the first terminal device) (an application in a terminal device)
  • the application layer of the first terminal device may determine that the first terminal device satisfies condition 3; otherwise, the application layer of the first terminal device may determine that the first terminal device does not satisfy condition 3.
  • the first terminal device may enter the quiet mode based on instructions from the user or other communication devices.
  • the first terminal device may detect an instruction input by the user to enter the still mode, and thereby enter the still mode.
  • the first terminal device and the first communication device are paired devices.
  • An example is: the first terminal device is a mobile phone and the first communication device is a watch. After detecting the instruction to enter the static mode input by the user, the first communication device sends an instruction to enter the static mode to the first terminal device, thereby causing the first terminal device to enter the static mode.
  • the first terminal device receives system information from at least one cell.
  • the system information from any one of the at least one cells includes information indicating the paging detection period of any cell.
  • the first terminal device receives system information 1 from cell 1, and the system information 1 includes information indicating the paging detection period of cell 1.
  • the first terminal device receives system information 2 from cell 2, and system information 2 is included in the Contains information used to indicate the paging detection period of cell 2.
  • the first terminal device can determine the paging detection period of cell 1 and the paging detection period of cell 2 respectively.
  • the information used to indicate the paging detection period of any cell can be directly the paging detection period of any cell (for example, the information used to indicate the paging detection period of any cell is 32 milliseconds ( ms)), you can also indirectly indicate the paging detection period of any cell (for example, when the information used to indicate the paging detection period of any cell is the first value, the paging detection period of any cell is 32ms).
  • the paging detection period may be a DRX period.
  • S203 The first terminal device measures the signal strength of at least one cell.
  • the first terminal device can measure the signal strength of at least one cell by measuring at least one of the following parameters: reference signal receiving power (reference signal receiving power, RSRP), reference signal receiving quality (reference signal receiving quality, RSRQ), receiving received signal strength indication (RSSI), or signal to interference plus noise ratio (SINR).
  • reference signal receiving power reference signal receiving power
  • RSRQ reference signal receiving quality
  • RSSI received signal strength indication
  • SINR signal to interference plus noise ratio
  • S202 may be executed first, and then S203 may be executed; S203 may be executed first, and then S202 may be executed; S202 and S203 may also be executed at the same time.
  • the first terminal device determines a set of candidate cells based on the signal strength of at least one cell and the paging detection period.
  • the set of candidate cells may include: a cell whose signal strength is greater than or equal to the first threshold in at least one cell and whose paging detection period is the largest.
  • at least one cell includes: cell 1, cell 2 and cell 3.
  • the first terminal device determines that the paging detection period of cell 1 is 32 ms, that of cell 2 is 64 ms, and that of cell 3 is 64 ms.
  • the first terminal device determines that the signal strengths of cell 1, cell 2 and cell 3 are all greater than the first threshold.
  • the first terminal device may determine that the candidate cell set includes: cell 2 and cell 3.
  • the first terminal device may also determine and save a first set, where the first set includes cells whose signal strength is greater than the first threshold in the at least one cell.
  • the first set includes cells whose signal strength is greater than the first threshold in the at least one cell.
  • at least one cell includes: cell 1, cell 2 and cell 3.
  • the first terminal device determines that the signal strengths of cell 1, cell 2 and cell 3 are all greater than the first threshold.
  • the first terminal device may determine that the first set includes: cell 1, cell 2, and cell 3.
  • the first terminal device camps on the first cell.
  • the first cell is a cell in the candidate cell set.
  • the first terminal equipment when selecting a cell to camp on, not only considers the signal strength of the cell, but also considers the paging detection period of the cell.
  • the first terminal device can at least use the maximum paging detection period to detect paging messages, thereby reducing the cost of the first terminal device. standby power consumption.
  • the first terminal device may camp on a cell in the candidate cell set through one of the following implementation methods.
  • Implementation manner 1 The first terminal device camps on a cell (ie, the target cell) configured to send multiple paging messages in the candidate cell set.
  • the first implementation method may include steps A1-A2:
  • the first terminal device can detect whether the candidate cell set includes a cell configured to send multiple paging messages.
  • the first terminal device may detect whether the set of candidate cells contains configurations to send multiple cells one by one in a set order. Cells that receive paging messages multiple times may also check one by one in random order whether the set of candidate cells includes cells configured to send paging messages multiple times. When detecting that the candidate cell set includes a cell configured to send multiple paging messages, the first terminal device may stop detection and continue to camp on the cell.
  • the setting order is at least one of the following:
  • Example 1 The order of cell standards from high to low: For example (hereinafter referred to as Example 1), when the candidate cell set includes: 5G cell A, third generation (3rd generation, 3G) cell B, 4G cell C , the order is: cell A, cell C and cell B.
  • the order of power consumption of the first terminal device in each standard cell from low to high includes: 5G cell A, 3G cell B, and 4G cell C.
  • the first terminal device is in the 5G cell.
  • the power consumption is the lowest in , and the power consumption is the highest in the 4G cell; at this time, the order is: cell A, cell B, and cell C.
  • the power consumption of the first terminal device in each standard cell can be detected by the first terminal device itself; it can also be detected and stored in the first terminal device before leaving the factory.
  • step A1 may include steps B1-B2:
  • the first terminal device detects whether the current serving cell (for example, the first cell) is a cell configured to send multiple paging messages.
  • the current serving cell may be a cell in the set of candidate cells selected by the first terminal device according to the above-set order or a random order.
  • the current serving cell may be cell A.
  • the first terminal device When detecting that the current serving cell is a cell configured to send multiple paging messages, the first terminal device can determine the cell as the target cell; when detecting that the current serving cell is not a cell configured to send multiple paging messages , the first terminal device may camp on the next cell in the candidate cell set.
  • step B1 For the method in which the first terminal device detects whether the current serving cell is a cell configured to send multiple paging messages, please refer to the description of step B1 below.
  • the first terminal device may perform B1-B2 until a cell configured to send multiple paging messages is detected or all cells in the candidate cell set are detected.
  • the first terminal device when it is detected that cell A is a cell configured to send paging messages multiple times, the first terminal device may determine cell A as the target cell; when it is detected that cell A is not configured to send paging messages multiple times, When paging messages are sent to a cell, the first terminal device can camp in cell C and use cell C as the current serving cell to perform steps B1-B2 until a cell configured to send multiple paging messages is detected or candidate cells are detected. All cells in the set.
  • This method provides a possible method of detecting whether the candidate cell set contains a cell configured to send multiple paging messages, and is easy to implement.
  • step B2 when the current serving cell is not detected as a cell configured to send multiple paging messages within the first period of time, the first terminal device may camp on the next cell in the candidate cell set. . That is, the time for the first terminal device to detect whether the current serving cell is a cell configured to send multiple paging messages cannot exceed the first duration.
  • the first terminal device can start a first timer with a timing time of a first length after camping on the current serving cell; when the timing time of the first timer arrives, if the first terminal device has not detected the current If the serving cell is a cell configured to send multiple paging messages, it will camp on the next cell in the candidate cell set.
  • the first duration may be pre-configured (for example, a detection timer duration T1 is configured in the non-volatile (NV) random access memory (RAM), and T1 is the first duration), It may also be obtained by the first terminal device from other communication devices (for example, a base station).
  • NV non-volatile
  • RAM non-volatile random access memory
  • the total time for the first terminal device to detect whether the set of candidate cells contains cells configured to send multiple paging messages can be limited, and the first terminal device can be prevented from constantly detecting whether the set of candidate cells includes cells configured to send multiple paging messages. message, thereby reducing the time for the first terminal device to select a cell to camp on.
  • step B1 Taking the current serving cell as the first cell as an example, possible implementation methods of step B1 are described below.
  • the first terminal device may detect whether the first cell contains a cell configured to send multiple paging messages through the following steps:
  • the first terminal device may detect the paging message from the first cell according to the paging detection cycle of the first cell.
  • M paging messages from the first cell are received in M consecutive paging detection periods of the first cell, and each received paging message contains the identification information of the second terminal device, in other words
  • the first terminal device may determine The first cell is a cell configured to send multiple paging messages; otherwise, the first terminal device may determine that the first cell is not a cell configured to send multiple paging messages.
  • M is an integer greater than or equal to 2.
  • the first terminal device may detect whether a paging message from the first cell is received in each of the M consecutive paging detection periods of the first cell through the following steps, and whether Each paging message contains identification information of the second terminal device.
  • the first terminal device After receiving the called paging from the first cell, the first terminal device saves the UE identity (ue-Identity) in the called paging and records the time when the called paging is received (hereinafter referred to as for the first time).
  • the first terminal device After receiving the next called paging from the first cell at the second time, the first terminal device calculates the time difference between the second time and the first time. If the time difference is less than or equal to the time difference threshold (that is, within the DRX error range), it means that the two called pages were received within two consecutive paging detection periods of the first cell. At this time, steps can be performed C3; otherwise, perform step C1 for the called page received in step C2, that is, replace the called page received in step C1 with the called page received in step C2.
  • the first terminal device determines whether the ue-Identity in the called paging received through step C1 and the ue-Identity in the next called paging received through step C2 are the same; if so, the first terminal The device may determine that the first cell is a cell configured to send multiple paging messages; otherwise, perform step C1 for the called paging received in step C2, that is, the called paging received in step C1 Replaced with the called page received in step C2.
  • the first terminal device can use the above method to detect whether the cell is a cell configured to send multiple paging messages, and only changes the first one among them. The cell is replaced with the second cell.
  • the first terminal device can determine whether the cell is a cell configured to send multiple paging messages by detecting paging messages, and the operation is relatively simple.
  • the third cell may be any cell in the candidate cell set, and the first terminal device may detect whether the third cell is a cell configured to send multiple paging messages according to the second cycle, that is, the first terminal device uses In the second period, it is detected whether the third cell is a cell configured to send multiple paging messages.
  • the first terminal device detects whether the third cell is a cell configured to send multiple paging messages.
  • the detection method may refer to step B1; when the first terminal device does not detect the third cell
  • the first terminal device may detect whether the third cell is a cell configured for sending multiple paging messages in the K+1 second period.
  • K is a positive integer.
  • the second period may be greater than the paging detection period of the third cell.
  • the second period is 5 minutes
  • the paging detection period of the third cell is 64 ms.
  • the second period may be pre-configured, or may be obtained by the first terminal device from other communication devices (eg, base station).
  • a certain cell may be configured to send multiple paging messages; however, when the first terminal device detects whether the cell is configured to send multiple paging messages, the cell may not send paging messages. paging message, in this way, the first terminal device may not detect that the cell is a cell configured to send multiple paging messages.
  • the accuracy of detecting whether the cell is a cell configured to send multiple paging messages can be improved.
  • the first terminal device may stop detection and continue to camp on the cell configured to send multiple paging messages (ie, the target cell).
  • the first terminal device Since the first terminal device has already camped in the target cell when detecting whether the target cell is a cell configured to send multiple paging messages, the first terminal device no longer performs operations such as cell switching.
  • the first terminal device can camp on a target cell configured to send multiple paging messages in the candidate cell set.
  • the first terminal device can further lengthen the period for detecting paging messages, thereby further reducing the power consumption of the first terminal device.
  • Implementation method 2 The first terminal device camps in the cell with the highest standard in the candidate cell set (ie, the first cell).
  • the candidate cell set includes: cell A of 5G, cell B of 3G, and cell C of 4G.
  • the first terminal device may camp in cell A (ie, the first cell).
  • Implementation manner three the first terminal device randomly camps in a cell (ie, the first cell) in the candidate cell set.
  • the candidate cell set includes: cell A of 5G, cell B of 3G, and cell C of 4G.
  • the first terminal device may randomly select any one of cell A, cell B, and cell C as the first cell, and camp in the first cell.
  • Implementation manner 4 The first terminal device camps in the cell of the standard with the lowest power consumption of the first terminal device in the candidate cell set (ie, the first cell).
  • the candidate cell set includes: 5G cell A, 3G cell B, and 4G cell C.
  • the first terminal device has the lowest power consumption in the 5G cell and the highest power consumption in the 4G cell.
  • the first terminal device may camp in cell A (ie, the first cell).
  • the first terminal device may camp on the first cell through any of implementation methods two, three, and four; it may also camp on the first cell after detecting the candidate cell
  • the first terminal device re-camps to the first cell.
  • the first terminal device uses Implementation Mode 2 or Implementation Mode 3. , implement any one of the four methods to camp in the first cell.
  • the method further includes:
  • the first terminal device may receive paging messages from the current serving cell according to the first cycle.
  • the first period is N times the paging detection period of the current serving cell, and N is an integer greater than or equal to 2.
  • the first terminal device may adjust the period for receiving the paging message of the current serving cell only once; or it may The period for receiving the paging message of the current serving cell is adjusted multiple times, so that the period for receiving the paging message of the current serving cell gradually becomes longer.
  • the first terminal device may receive paging messages from the current serving cell according to the first cycle 1.
  • the first period 1 is N1 times the paging detection period of the current serving cell, and N1 is an integer greater than or equal to 2.
  • the first terminal device uses the first cycle 1 to detect whether the current serving cell is a cell configured to send multiple paging messages.
  • the detection method can refer to step A1, except that the paging detection cycle of the first cell is replaced by the first Cycle 1.
  • the first terminal device may receive the paging message from the current serving cell according to the first cycle 2, where , the first period 2 is N2 times the paging detection period of the current serving cell, N2 is an integer greater than or equal to 2, and N2 is greater than N1.
  • the first terminal device may use the first period 2 to detect whether the current serving cell is a cell configured to send multiple paging messages until the period for receiving paging messages from the current serving cell reaches the third threshold.
  • the third threshold may be preset, or may be obtained from other communication devices (for example, base stations).
  • the first terminal device can reuse the result of step A1 to determine that the current serving cell is a cell configured to send multiple paging messages; it can also be used after camping on the current serving cell and/or receiving a message from the current serving cell. After the cell sends a message indicating system information update, refer to the method in Implementation Mode 1 to determine that the current serving cell is a cell configured to send multiple paging messages.
  • the current serving cell is a cell configured to send multiple paging messages
  • the current serving cell may send the same paging message during the paging detection periods of multiple consecutive current serving cells.
  • the first terminal device When the first terminal device is in the static mode, it can perform corresponding operations as long as it receives a paging message from the current serving cell. For example, when the first terminal device is in the static mode, the incoming call information can be displayed as long as it receives a called page from the current serving cell.
  • the first terminal device receives the paging message from the current serving cell according to the multiple of the paging detection period of the current serving cell, instead of The paging message from the current serving cell is received in each paging cycle, so that the power consumption of the first terminal device can be reduced.
  • the method further includes:
  • the first terminal device only detects the signal strength of the current serving cell (for example, the first cell or the target cell). In other words, the first terminal device detects the signal strength of the serving cell in the static mode and does not detect the signal strength of the neighboring cell.
  • the first terminal device In the static mode, the first terminal device has no mobility requirements and does not need to perform cell reselection or cell switching. Through this method, in the static mode, the first terminal device only detects the signal strength of the serving cell and does not detect the signal strength of the neighboring cells, thereby reducing the power consumption of the first terminal device.
  • the candidate cell set in S204 may be: a set including at least one cell whose signal strength is greater than or equal to the first threshold.
  • the first terminal device only detects the signal strength of the serving cell and does not detect the signal strength of the neighboring cells, which can also reduce the power consumption of the first terminal device.
  • this application does not limit the execution order of S206 and S207.
  • S207 may include the following steps D1-D2:
  • the first terminal device uses the third cycle to detect the signal strength of the current serving cell (for example, the target cell or the first cell).
  • the current serving cell for example, the target cell or the first cell.
  • the third period may be a period determined by the physical layer of the first terminal device for detecting cell signal strength.
  • the first terminal device may use a fourth period greater than the third period to detect the signal strength of the current serving cell.
  • the second duration and/or the second threshold may be preconfigured, or the first terminal device may obtain them from other devices (eg, base stations).
  • the physical layer of the first terminal device may re-determine the period used to detect the signal strength of the cell (ie, the fourth period), This fourth cycle is greater than the third cycle.
  • the first terminal device when the first terminal device detects that the signal strength of the current serving cell continues to be greater than or equal to the second threshold within the second time period, the first terminal device can use a larger period to detect the signal of the current serving cell. In this way, the first terminal device stops detecting the signal strength of the current serving cell for a longer time, thereby reducing the power consumption of the first terminal device.
  • the first terminal device when the first terminal device is in the RRC connection state, after S205, the first terminal device may prevent the reporting of the measurement report.
  • the first terminal device In the static mode, the first terminal device has no mobility requirements; thus, even if the first terminal device is in the RRC connected state, cell switching is not required. Through this method, in the static mode, the first terminal device does not report the measurement report, thereby reducing the power consumption of the first terminal device and saving resources for transmitting the measurement report. Moreover, by not reporting a measurement report, the first terminal device can also avoid unnecessary triggering of the base station to initiate cell switching.
  • the first terminal device may perform operations after exiting the static mode through one of the following implementations.
  • Implementation manner 1 After exiting the static mode, the first terminal device changes the residential cell.
  • This implementation 1 may include steps E1-E2:
  • E1 The first terminal device exits the static mode.
  • the application layer of the first terminal device may instruct the first terminal device to exit the silent mode when it is determined that the first terminal device meets the conditions for exiting the silent mode. For example, when determining that the first terminal device meets the conditions for exiting the dormant mode, the application layer of the first terminal device may send an instruction to the protocol stack of the first terminal device for instructing the first terminal device to exit the dormant mode.
  • the conditions for exiting the static mode may include at least one of the following:
  • Condition 1 Within the sixth period of time, the location of the first terminal device changes;
  • Condition 2 Within the seventh period of time, the first terminal device detects the user's operation on the first terminal device;
  • Condition 3 Within the eighth period of time, one or more applications in the first terminal device are in working state.
  • the following describes how the application layer of the first terminal device determines that the first terminal device satisfies conditions one to three.
  • the application layer of the first terminal device may obtain the preconfigured sixth duration or the sixth duration indicated by other communication devices (eg, base stations, etc.).
  • the application layer of the first terminal device may use the location detection device (for example, GPS) of the first terminal device to locator) to obtain the location of the first terminal device.
  • the application layer of the first terminal device may determine that the first terminal device satisfies condition one; otherwise, the first terminal device The application layer may determine that the first terminal device does not meet condition one.
  • the application layer of the first terminal device may obtain the preconfigured seventh duration or the seventh duration indicated by other communication devices (eg, base stations, etc.).
  • the application layer of the first terminal device can obtain the user's operation on the first terminal device through the input and output device of the first terminal device (for example, a touch screen, volume keys and other control keys).
  • the application layer of the first terminal device obtains the user's operation on the first terminal device (for example, the application layer of the first terminal device obtains the user's operation of increasing the volume through the volume key of the first terminal device) )
  • the application layer of the first terminal device may determine that the first terminal device satisfies condition two; otherwise, the application layer of the first terminal device may determine that the first terminal device does not satisfy condition two.
  • the application layer of the first terminal device may obtain the preconfigured eighth duration or the eighth duration indicated by other communication devices (eg, base stations, etc.).
  • the application layer of the first terminal device can detect the working status of each application program in the first terminal device.
  • the application layer of the first terminal device detects that one or more applications in the first terminal device are in a working state, the application layer of the first terminal device may determine that the first terminal device satisfies condition three; Otherwise, the application layer of the first terminal device may determine that the first terminal device does not satisfy condition three.
  • the first terminal device may exit the quiet mode based on instructions from the user or other communication devices.
  • the first terminal device may detect an instruction input by the user to exit the rest mode, thereby exiting the rest mode.
  • the first terminal device and the first communication device are paired devices.
  • An example is: the first terminal device is a mobile phone and the first communication device is a watch. After detecting the instruction input by the user to exit the static mode, the first communication device sends an instruction to exit the static mode to the first terminal device, thereby causing the first terminal device to exit the static mode.
  • E2 The first terminal equipment camps on the fourth cell with the highest standard in the first set saved in S204.
  • the first set may include: cell A of 5G, cell B of 3G, and cell C of 4G; the cell where the first terminal device camped before exiting the static mode is cell C.
  • the first terminal device may camp on cell A (ie, the fourth cell).
  • the first terminal device can save the first set; in this way, in this implementation mode 1, after exiting the static mode, the first terminal device can quickly camp on the fourth cell with the highest standard in the first set, without The cell is measured again, thereby reducing the time for changing the resident cell (which may also be called cell reselection).
  • Implementation manner 2 After exiting the static mode, the first terminal device does not change the resident cell.
  • This implementation 2 may include steps F1-F2:
  • F1 The first terminal device exits the static mode.
  • the first terminal device receives the paging message from the current serving cell according to the paging detection cycle of the current serving cell (for example, the target cell or the first cell), that is, the first terminal device uses the paging message of the current serving cell. During the call detection period, the paging message from the current serving cell is received.
  • the current serving cell for example, the target cell or the first cell
  • the first terminal equipment After the first terminal equipment exits the static mode, if it still receives paging messages from the current serving cell according to a multiple of the paging detection period of the current serving cell, it is possible that the first terminal equipment does not receive paging messages from the current serving cell due to the movement of the first terminal equipment. paging message of the serving cell.
  • the first terminal device uses the paging detection cycle of the current serving cell to receive paging messages from the current serving cell, which can improve the first terminal device's reception of paging messages from the current serving cell. Possibility of paging messages from the cell.
  • the above method further includes:
  • G1 When the first terminal device is in the RRC connection state and detects that the first terminal device has no uplink data or downlink data, the first terminal device releases the first terminal device and the current serving cell (for example, the target cell or the first cell) RRC connection between.
  • the current serving cell for example, the target cell or the first cell
  • the first terminal device may determine that the first terminal device has no uplink data and downlink data. At this time, the first terminal device may release the RRC connection between the first terminal device and the current serving cell.
  • the first set duration may be preconfigured, or may be obtained by the first terminal device from other communication devices (for example, a base station).
  • the first terminal device when the first terminal device does not receive downlink data from the current serving cell within the second set time period, and the first terminal device does not have uplink data that needs to be sent, the first terminal device It can be determined that the first terminal device has no uplink data and downlink data. At this time, the first terminal device may release the RRC connection between the first terminal device and the current serving cell.
  • the second set duration may be preconfigured, or may be obtained by the first terminal device from other communication devices (for example, a base station).
  • the first terminal device can actively initiate the release of the RRC connection between the first terminal device and the current serving cell.
  • the embodiment of this application provides a communication method.
  • This method shows a possible example of the method shown in Figure 2. Referring to the flow chart shown in Figure 3, the method will be described below, taking the terminal device as a UE as an example.
  • the UE's application (application, AP) layer may notify the UE's protocol stack (Modem) to enter the silent mode.
  • the method for the AP layer of the UE to determine that the UE meets the conditions for entering the static mode may refer to S201, which will not be described again here.
  • S301, S302-S304 may be executed first, and then S305 may be executed; when the UE has camped on the serving cell, after S301, S305 may be executed.
  • the NAS layer of the UE may initiate measurement of a cell of the first standard (for example, 5G) (ie, initiate a network search).
  • 5G the first standard
  • the first standard may be a standard specified by the NAS layer.
  • the RRC layer of the UE can measure the signal strength of the cell of the first standard. When the signal strength of the cell of the first standard is greater than or equal to the first threshold, the RRC layer of the UE can initiate camping on the cell. After the UE camps on this cell, this cell becomes the UE's current serving cell.
  • the first threshold may be an NV customized energy threshold.
  • the RRC layer of the UE obtains the paging detection cycle (eg, DRX cycle) of the serving cell.
  • the paging detection cycle eg, DRX cycle
  • the RRC layer of the UE may receive system information from the serving cell, and the system information may include the DRX cycle of the serving cell.
  • S305 The UE determines the first candidate cell set.
  • the first candidate cell set includes: the cell whose signal strength exceeds the first threshold and has the longest DRX cycle among neighboring cells of each standard that can serve the UE.
  • the serving cell of the UE is 5G cell one
  • the neighboring cells include: 3G cell two, 4G cell three, 5G cell four, and 5G cell five.
  • the information of Community 2, Community 3, Community 4 and Community 5 The signal intensity is greater than or equal to the first threshold.
  • the DRX cycle of cell two is 32ms
  • the DRX cycle of cell three is 64ms
  • the DRX cycle of cell four is 64ms
  • the DRX cycle of cell five is 32ms.
  • the UE may determine that the first candidate cell set includes: cell three of 4G and cell four of 5G.
  • the method for the UE to measure the signal strength of the cell and determine the DRX cycle can refer to S202-S204, which will not be described again here.
  • S306 The UE determines the second candidate cell set (ie, the candidate cell set in the method shown in Figure 2).
  • the UE may sort the cells and serving cells in the first candidate cell set according to the DRX cycle to obtain the second candidate cell set.
  • the second candidate cell set includes: among the cells of each standard that can serve the UE, the signal strength is greater than or equal to the first threshold and the cell with the longest DRX cycle.
  • the UE can randomly select one of them as the cell in the second candidate cell set; it can also choose The current serving cell is used as a cell in the second candidate cell set; the cell with the highest signal strength may also be selected as a cell in the second candidate cell set.
  • the second candidate cell set when the DRX cycle of cell one is greater than 64ms, the second candidate cell set includes cell one; or, when the DRX cycle of cell one is less than 64ms, the second candidate cell set includes cell three of 4G. and cell four of 5G; or, when the DRX cycle of cell one is equal to 64 ms, the second candidate cell set includes cell three of 4G and cell four of 5G, or includes cell three of 4G and cell one of 5G.
  • the UE may also save the first candidate cell set or all cells whose signal strength is greater than or equal to the first threshold.
  • S307 The UE determines whether the second candidate cell set includes the current serving cell; if so, perform S309; otherwise, perform S308.
  • the UE is reselected to the cell of the standard with the smallest standby power consumption of the UE in the second candidate cell set.
  • the UE camps on the cell of the standard with the smallest standby power consumption of the UE in the second candidate cell set.
  • the cell of the standard with the smallest standby power consumption of the UE is the current serving cell of the UE.
  • the UE may perform S310.
  • S309 The UE determines whether the second candidate cell set only contains the current serving cell; if so, perform S312; otherwise, perform S310.
  • S310 The UE detects whether the second candidate cell set includes a cell configured to send multiple paging messages. If yes, execute S313; otherwise, execute S311.
  • the method for the UE to detect whether the second candidate cell set includes a cell configured to send multiple paging messages may refer to step A1 in the method shown in Figure 2, which will not be described again here.
  • S311 The UE re-camps on a cell in the second candidate cell set.
  • the cell may be any cell in the second candidate cell set, or it may be a cell of the standard with the smallest UE standby power consumption in the second candidate cell set, or it may be the cell with the highest signal strength in the second candidate cell set. , may also be the cell with the highest standard in the second candidate cell set.
  • S312 The UE detects whether the current serving cell is a cell configured to send multiple paging messages; if so, perform S313.
  • step A1 in the method shown in Figure 2, which will not be described again here.
  • the UE may perform S312 after camping on the current serving cell.
  • the RRC layer of the UE can periodically detect whether the current serving cell is a cell configured to send multiple paging messages. , that is, S312 is executed periodically.
  • the RRC layer of the UE may set a second timer, and the timing time of the second timer is Second cycle.
  • the RRC layer of the UE can start the second timer; when the timing time of the second timer arrives, the UE S312 can be executed again.
  • the RRC layer of the UE configures the physical (PHY) layer of the UE for detecting the first cycle of the paging message.
  • the first period may be a multiple of the DRX period (for example, 2*DRX period).
  • the PHY layer of the UE may use the first cycle to detect paging messages.
  • S314 The UE receives information from the base station indicating system message update.
  • S314 is an optional step.
  • the UE after receiving the information indicating system message update from the base station, the UE performs S312.
  • the UE can optimize the operations in the idle state and the connected state through the method shown in Figure 4.
  • S401 The UE only measures the signal strength of the serving cell.
  • S401 The specific content of S401 can be referred to S207, and the repeated parts will not be repeated.
  • the UE may also use the third cycle to detect the signal strength of the serving cell during the detection duration T.
  • the third period is a period in which the UE measures the signal strength of the serving cell. This period may also be called the measurement stop interval IntervalTimer.
  • the detection duration T and the third cycle can be stored in NV RAM in advance.
  • S402 The UE determines whether the signal strength of the serving cell is always greater than or equal to the second threshold during the detection duration T.
  • the UE may obtain the second threshold stored in the NV.
  • the signal strength of the serving cell measured using the third period is greater than or equal to the second threshold during the detection duration T, perform S403; otherwise, continue to perform S401.
  • the UE may adjust the period for measuring the signal strength of the serving cell. Specifically, the UE may adjust the period for measuring the signal strength of the serving cell from the third period to the fourth period.
  • the fourth period may be greater than the third period.
  • the difference between the fourth period and the third period can be a multiple of IntervalTimer.
  • the third period is IntervalTimer and the fourth period is 2*IntervalTimer.
  • S404 The UE receives the measurement configuration of the connected state from the base station.
  • the measurement configuration may, but is not limited to, include: measurement period, measurement window length, and offset of the measurement window within the measurement period.
  • the measurement configuration can be carried in an existing message (for example, an RRC connection reconfiguration message) or in a new message, which is not limited in this application.
  • S405 The UE only measures the signal strength of the serving cell and does not report a measurement report.
  • the UE may measure the signal strength of the serving cell within the measurement window indicated by the measurement configuration.
  • S406 When it is determined that the UE has no uplink data and downlink data, the UE can actively release the connection between the UE and the serving cell. RRC connection.
  • step G1 the specific content of S406 can be referred to step G1, and repeated details will not be repeated.
  • the lower layer of the UE may notify the RRC layer of the UE to proactively release the RRC connection between the UE and the serving cell when it is determined that the UE has no uplink data or downlink data.
  • the UE can enter the idle state and camp on the serving cell. At this time, the UE can perform the operations of S401-S403.
  • S401-S403 and S404-S406 can be combined with each other, or can be used as a separate solution.
  • this application does not limit the execution order of S401-S403 and S404-S406; this application also does not limit the execution order of any step in S401-S406 and any step between S305-S314.
  • the UE may perform operations after exiting the static mode through the method shown in S315-S316.
  • the AP layer of the UE may notify the UE's Modem to exit the silent mode.
  • step E1 The specific content of the AP layer of the UE determining whether the UE meets the conditions for exiting the static mode can be referred to step E1, which will not be described again here.
  • the UE may perform at least one of the following operations after exiting the static mode:
  • the UE camps on the cell with the highest standard among the cells saved in S306. For specific content, please refer to step E2 and will not be repeated here.
  • the UE configures the PHY layer to detect the paging message according to the DRX cycle of the current serving cell; the PHY layer of the UE uses the DRX cycle of the current serving cell to receive the paging message. For details, please refer to step F2 and will not be repeated here.
  • the UE resumes measuring the signal strength of the serving cell and neighboring cells.
  • the neighboring cells may include at least one of the following: same-frequency neighboring cells, inter-frequency neighboring cells, and inter-system neighboring cells.
  • the UE cancels the suppression of measurement reports; in other words, the UE can report measurement reports when it is in the connected state.
  • S315-S316 may be combined with at least one of S401-S403, S404-S406 and S305-S314.
  • S401-S403, S404-S406 and S305-S314 is executed first, and then S315-S316 is executed.
  • the following steps can be performed by the RRC layer of the UE: S305-S307, S309-S310, S312, S402; the following steps can be performed by the RRC layer and PHY layer of the UE: S308, S311, S314, S316, S401, S403-S406.
  • the UE when selecting a cell to camp on, not only considers the signal strength of the cell, but also considers the paging detection period of the cell. Specifically, the UE selects the cell whose signal strength is greater than or equal to the first threshold and has the largest paging detection period to camp on; in this way, the UE can at least use the largest paging detection period to detect paging messages, thereby reducing the UE's standby time power consumption.
  • the UE when the UE is in the static mode and camps on a cell configured to send multiple paging messages in the second candidate cell set, the UE can lengthen the period for detecting paging messages, thereby further reducing the UE's of power consumption.
  • the UE in the static mode, the UE only detects the signal strength of the serving cell and does not detect the signal strength of neighboring cells, thereby reducing the power consumption of the UE.
  • the UE when the UE detects that the signal strength of the serving cell continues to be greater than or equal to the second threshold, the UE can use a larger period to detect the signal strength of the serving cell and lengthen the time interval for detecting the signal strength of the serving cell. This can reduce the power consumption of the UE.
  • the UE when the UE finds that there is no uplink data or downlink data, it can promptly release the RRC connection between the UE and the serving cell to avoid unnecessary occupation of resources.
  • the embodiment of the present application provides a communication device through Figure 5, which can be used to perform the functions of the relevant steps in the above method embodiment.
  • the functions described can be implemented by hardware, or can be implemented by software or hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • the structure of the communication device is shown in Figure 5, including a communication unit 501 and a processing unit 502.
  • the communication device 500 can be applied to the terminal equipment in the communication system shown in Figure 1, and can implement the communication method provided by the above embodiments and examples of the present application.
  • the functions of each unit in the communication device 500 are introduced below.
  • the communication unit 501 is used to receive and send data, and can be implemented by a transceiver, for example, a mobile communication module.
  • the mobile communication module may include at least one antenna, at least one filter, switch, power amplifier, low noise amplifier (low noise amplifier, LNA), etc.
  • the AN device can communicate with the accessed terminal device through the mobile communication module.
  • the processing unit 502 may be used to support the communication device 500 in performing the processing actions in the above method embodiments.
  • the processing unit 502 may be implemented by a processor.
  • the processor can be a central processing unit (CPU), or other general-purpose processor, digital signal processor (DSP), application specific integrated circuit (ASIC) , field programmable gate array (FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • a general-purpose processor can be a microprocessor or any conventional processor.
  • the communication device 500 is applied to the first terminal device in the embodiment of the present application shown in Figure 2, or the UE in the embodiment of the present application shown in any one of Figures 3-4.
  • the specific functions of the communication unit 501 and the processing unit 502 in this embodiment will be introduced below.
  • the communication unit 501 is configured to receive system information from at least one cell when the communication device 500 enters the static mode; wherein the system information from the at least one cell includes paging detection for indicating any cell in the at least one cell. cycle information;
  • the processing unit 502 is configured to: measure the signal strength of at least one cell; determine a candidate cell set according to the paging detection cycle and signal strength of at least one cell, where the candidate cell set includes: the signal strength in at least one cell is greater than or equal to A threshold value and the cell with the largest paging detection period; camp on the first cell, where the first cell is a cell in the candidate cell set.
  • the processing unit 502 is also configured to: after camping on the first cell, detect whether the first cell to camp on is a cell configured to send multiple paging messages; when the first cell is not configured to send multiple paging messages message, camp on the next cell in the candidate cell set and detect whether it is a cell configured to send multiple paging messages; camp on the target cell, and the target cell is configured to send multiple paging messages in the candidate cell set. community.
  • the processing unit 502 is specifically configured to: when M paging messages from the first cell are received through the communication unit 501 in M consecutive paging detection periods of the first cell, and each paging message received When the messages all contain the identification information of the second terminal device, the first cell is determined to be the cell configured to send multiple paging messages; when M messages are not received through the communication unit 501 in M consecutive paging detection cycles of the first cell. paging messages from the first cell, it is determined that the first cell is not a cell configured to send multiple paging messages; where M is an integer greater than or equal to 2.
  • the communication unit 501 is also configured to: after camping on the target cell, receive a paging message from the target cell according to a first period; wherein the first period is N times the paging detection period of the target cell, N is greater than or equal to 2 integer.
  • the processing unit 502 is specifically configured to: when the candidate cell set does not include a cell configured to send multiple paging messages, camp on the first cell again.
  • the processing unit 502 is also configured to: after camping on the target cell, only detect the signal strength of the target cell.
  • the processing unit 502 is also configured to: when the communication device 500 is in the radio resource control RRC connection state, after detecting the signal strength of the target cell, prevent the reporting of the measurement report.
  • the processing unit 502 is further configured to: before camping on the first cell, determine a first set according to the signal strength of at least one cell, where the first set includes: the signal strength in at least one cell is greater than or equal to the first cell.
  • a threshold cell after camping on the first cell, when the communication device 500 exits the static mode, it camps on the fourth cell with the highest standard in the first set.
  • the communication unit 501 is also configured to receive a paging message from the target cell according to the paging detection cycle of the target cell when the communication device 500 exits the static mode after camping on the target cell.
  • the processing unit 502 is also configured to: after camping on the target cell, when the communication device 500 is in the RRC connection state and detects that the communication device 500 has no uplink data and downlink data, release the connection between the communication device 500 and the target cell. RRC connection between.
  • each function in each embodiment of the present application can be integrated into one processing unit, or they can exist physically alone, or two or more units can be integrated into one unit.
  • the above integrated units can be implemented in the form of hardware or software functional units.
  • the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially or contributes to the existing technology, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions to cause a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the methods described in various embodiments of the application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code. .
  • the embodiment of the present application provides a communication device as shown in Figure 6, which can be used to perform relevant steps in the above method embodiment.
  • the communication device can be applied to the terminal equipment in the communication system shown in Figure 1, can implement the communication method provided in the above embodiments and examples of the present application, and has the functions of the communication device shown in Figure 5.
  • the communication device 600 includes: a communication module 601 , a processor 602 and a memory 603 .
  • the communication module 601, the processor 602 and the memory 603 are connected to each other.
  • the communication module 601, the processor 602 and the memory 603 are connected to each other through a bus 604.
  • the bus 604 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, etc.
  • PCI peripheral component interconnect
  • EISA extended industry standard architecture
  • the bus can be divided into address bus, data bus, control bus, etc. For ease of presentation, only one thick line is used in Figure 6, but it does not mean that there is only one bus or one type of bus.
  • the communication module 601 is used to receive and send data to implement communication interaction with other devices.
  • the communication module 601 can be implemented through a physical interface, a communication module, a communication interface, and an input and output interface.
  • the processor 602 may be used to support the communication device 600 in performing the processing actions in the above method embodiments.
  • the processor 602 can also be used to implement the functions of the above processing unit 502.
  • the processor 602 may be a CPU, or other general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, transistor logic device, hardware component or any combination thereof.
  • a general-purpose processor can be a microprocessor or any conventional processor.
  • the communication device 600 is applied to the first terminal device in the embodiment of the present application shown in Figure 2, or the UE in the embodiment of the present application shown in any one of Figures 3-4.
  • the processor 602 is specifically used to:
  • the communication module 601 receives system information from at least one cell; wherein the system information from at least one cell includes paging indicating any cell in the at least one cell. Detection cycle information; measure the signal strength of at least one cell; determine a candidate cell set based on the paging detection cycle and signal strength of at least one cell; wherein the candidate cell set includes: the signal strength in at least one cell is greater than or equal to the first threshold , and the cell with the largest paging detection period; camp on the first cell; where the first cell is a cell in the candidate cell set.
  • the memory 603 is used to store program instructions and data.
  • program instructions may include program code including computer operating instructions.
  • the memory 603 may include RAM, and may also include non-volatile memory (non-volatile memory), such as at least one disk memory.
  • the processor 602 executes the program instructions stored in the memory 603, and uses the data stored in the memory 603 to implement the above functions, thereby realizing the above communication method provided by the embodiment of the present application.
  • the memory 603 in Figure 6 of this application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories.
  • the non-volatile memory can be ROM, programmable ROM (PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM) ,EEPROM) or flash memory.
  • Volatile memory can be RAM, which acts as an external cache.
  • RAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM DDR SDRAM
  • enhanced SDRAM ESDRAM
  • Synchlink DRAM SLDRAM
  • Direct Rambus RAM Direct Rambus RAM
  • embodiments of the present application also provide a computer program, which when the computer program is run on a computer, causes the computer to execute the method provided in the above embodiments.
  • embodiments of the present application also provide a computer-readable storage medium.
  • the computer-readable storage medium stores a computer program.
  • the computer program When the computer program is executed by a computer, it causes the computer to execute the method provided in the above embodiments. .
  • the storage medium may be any available medium that can be accessed by the computer. Taking this as an example but not limited to: computer-readable media may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage media or other magnetic storage devices, or can be used to carry or store instructions or data structures. expected program code and any other media that can be accessed by a computer.
  • embodiments of the present application also provide a chip, which is used to read the computer program stored in the memory and implement the method provided in the above embodiments.
  • the chip system includes a processor and is used to support the computer device to implement the functions involved in each device in the above embodiments.
  • the chip system further includes a memory, and the memory is used to store necessary programs and data of the computer device.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • embodiments of the present application may be provided as methods, systems, or computer program products. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment that combines software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
  • computer-usable storage media including, but not limited to, disk storage, CD-ROM, optical storage, etc.
  • These computer program instructions may also be stored in a computer-readable memory that causes a computer or other programmable data processing apparatus to operate in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction means, the instructions
  • the device implements the functions specified in a process or processes of the flowchart and/or a block or blocks of the block diagram.
  • These computer program instructions may also be loaded onto a computer or other programmable data processing device, causing a series of operating steps to be performed on the computer or other programmable device to produce computer-implemented processing, thereby executing on the computer or other programmable device.
  • Instructions provide steps for implementing the functions specified in a process or processes of a flowchart diagram and/or a block or blocks of a block diagram.

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Abstract

本申请公开了一种通信方法及装置，用于降低终端设备的待机功耗。该方法为：当第一终端设备进入静止模式时，第一终端设备可通过接收到的来自至少一个小区的系统信息，获取至少一个小区的寻呼检测周期。在测量至少一个小区的信号强度之后，第一终端设备可根据至少一个小区的信号强度以及寻呼检测周期，确定候选小区集合，并驻留至候选小区集合中的第一小区；其中，候选小区集合包括：至少一个小区中信号强度大于或等于第一阈值，且寻呼检测周期最大的小区。通过该方法，第一终端设备可选择信号强度大于或等于第一阈值，且寻呼检测周期最大的小区来驻留，从而可以至少采用最大的寻呼检测周期来检测寻呼消息，进而可降低第一终端设备的待机功耗。

Description

一种通信方法及装置
相关申请的交叉引用
本申请要求在2022年04月19日提交中国专利局、申请号为202210410656.5、申请名称为“一种通信方法及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信领域，尤其涉及一种通信方法及装置。
背景技术
目前，在移动通信系统中，终端设备可以驻留在小区中，驻留的小区可称为驻留小区或服务小区。这样，当终端设备处于空闲态时，终端设备可接收来自服务小区的寻呼消息；当终端设备处于连接态时，终端设备可与服务小区进行交互，例如，终端设备接收来自服务小区的寻呼消息和/或下行数据，终端设备向服务小区发送上行数据等。
当终端设备选择服务小区时，终端设备可进行小区搜索。当目标小区满足驻留条件时，终端设备即可发起对该目标小区的驻留。
但是，终端设备选择服务小区时，仅考虑目标小区是否满足驻留条件，终端设备的待机功耗较高。因此，需要一种降低终端设备待机功耗的方法。
发明内容
本申请提供一种通信方法及装置，用于降低终端设备的待机功耗。
第一方面，本申请实施例提供了一种通信方法。该方法包括：当第一终端设备进入静止模式时，第一终端设备可接收来自至少一个小区的系统信息，并测量至少一个小区的信号强度；其中，来自至少一个小区的系统信息中包含用于指示至少一个小区中的任一小区的寻呼检测周期的信息。然后，第一终端设备可根据至少一个小区的寻呼检测周期和信号强度，确定候选小区集合，并驻留至候选小区集合中的第一小区；其中，候选小区集合可包括：至少一个小区中信号强度大于或等于第一阈值，且寻呼检测周期最大的小区。
通过该方法，第一终端设备可选择信号强度大于或等于第一阈值，且寻呼检测周期最大的小区来驻留，从而可以至少采用最大的寻呼检测周期来检测寻呼消息，进而可降低第一终端设备的待机功耗。
在一种可能的设计中，第一终端设备在驻留至第一小区后，可检测驻留的第一小区是否为配置发送多次寻呼消息的小区；当第一小区未配置发送多次寻呼消息时，第一终端设备可驻留至候选小区集合中的下一个小区并检测是否为配置发送多次寻呼消息的小区。第一终端设备可驻留至目标小区，该目标小区为候选小区集合中的配置发送多次寻呼消息的小区。
通过该设计，第一终端设备可驻留至候选小区集合中配置发送多次寻呼消息的目标小区。当第一终端设备处于静止模式，且驻留在配置发送多次寻呼消息的小区时，第一终端设备可进一步拉长检测寻呼消息的周期，从而可进一步降低第一终端设备的功耗。
在一种可能的设计中，第一终端设备可通过如下方法检测驻留的第一小区是否为配置发送多次寻呼消息的小区：当在连续M个第一小区的寻呼检测周期中接收到M个来自第一小区的寻呼消息，且接收到的每个寻呼消息中均包含第二终端设备的标识信息时，第一终端设备可确定第一小区为配置发送多次寻呼消息的小区；当未在连续M个第一小区的寻呼检测周期中接收到M个来自第一小区的寻呼消息，第一终端设备可确定第一小区不是配置发送多次寻呼消息的小区；其中，M为大于或等于2的整数。
通过该设计，第一终端设备可通过检测寻呼消息来确定第一小区是否为配置发送多次寻呼消息的小区，操作较为简单。
在一种可能的设计中，在驻留至目标小区之后，第一终端设备可根据第一周期接收来自目标小区的寻呼消息；其中，第一周期为目标小区的寻呼检测周期的N倍，N为大于或等于2的整数。通过该设计，第一终端设备可在驻留至候选小区集合中配置发送多次寻呼消息的目标小区之后，进一步拉长检测寻呼消息的周期，从而可进一步降低第一终端设备的功耗。
在一种可能的设计中，当候选小区集合中未包含配置发送多次寻呼消息的小区时，第一终端设备可重新驻留至第一小区。其中，该第一小区可为候选小区集合中的任一小区，也可以为候选小区集合中第一终端设备待机功耗最小的制式的小区，还可为候选小区集合中信号强度最大的小区，还可为候选小区集合中制式最高的小区。通过该设计，当候选小区集合中未包含配置发送多次寻呼消息的小区时，第一终端设备仍可驻留至信号强度大于或等于第一阈值，且寻呼检测周期最大的小区，从而可以采用最大的寻呼检测周期来检测寻呼消息，进而可降低第一终端设备的待机功耗。
在一种可能的设计中，在驻留至目标小区之后，第一终端设备可仅检测目标小区的信号强度。在静止模式下，第一终端设备没有移动性需求，不需要进行小区重选或小区切换。通过该设计，在静止模式下，第一终端设备仅检测目标小区(即当前的服务小区)的信号强度，不检测邻小区的信号强度，从而可以降低第一终端设备的功耗。
在一种可能的设计中，第一终端设备可通过如下方法检测目标小区的信号强度：第一终端设备使用第三周期，检测目标小区的信号强度；当第二时长内目标小区的信号强度均大于或等于第二阈值时，第一终端设备可使用第四周期检测目标小区的信号强度；其中，第四周期大于第三周期。通过该设计，当第一终端设备检测到在第二时长内目标小区的信号强度持续大于或等于第二阈值时，第一终端设备可采用更大的周期来检测目标小区的信号强度，从而拉长检测目标小区信号强度的时间间隔；这样，第一终端设备停止检测目标小区的信号强度的时间也更长，从而可降低第一终端设备的功耗。
在一种可能的设计中，当第一终端设备处于RRC连接态时，在检测目标小区的信号强度之后，第一终端设备可阻止测量报告的上报。在静止模式下，第一终端设备没有移动性需求；这样，即便第一终端设备处于RRC连接态，也不需要进行小区切换。通过该设计，在静止模式下，第一终端设备不上报测量报告，从而可以降低第一终端设备的功耗，同时还可节约用于传输测量报告的资源。并且，第一终端设备不上报测量报告，也可以避免不必要的触发基站发起小区切换。
在一种可能的设计中，在驻留至第一小区之前，第一终端设备可根据至少一个小区的信号强度，确定第一集合；其中，第一集合可包括：至少一个小区中信号强度大于或等于第一阈值的小区；在驻留至第一小区之后，第一终端设备退出静止模式时，第一终端设备 可驻留至第一集合中制式最高的第四小区。通过该设计，在退出静止模式之后，第一终端设备可快速驻留到之前确定的第一集合中制式最高的第四小区，无需重新对小区进行测量，从而减少更换驻留小区(也可称为小区重选)的时间。
在一种可能的设计中，在驻留至目标小区之后，第一终端设备退出静止模式时，第一终端设备可根据目标小区的寻呼检测周期，接收来自目标小区的寻呼消息。第一终端设备退出静止模式之后，如果还按照目标小区的寻呼检测周期的倍数接收来自目标小区的寻呼消息，有可能因为第一终端设备的移动而没有接收到来自目标小区的寻呼消息。通过该设计，在退出静止模式之后，第一终端设备使用目标小区的寻呼检测周期接收来自目标小区的寻呼消息，可提高第一终端设备接收到来自目标小区的寻呼消息的可能性。
在一种可能的设计中，在驻留至目标小区之后，当第一终端设备处于RRC连接态，且检测到第一终端设备没有上行数据和下行数据时，第一终端设备可释放第一终端设备与目标小区之间的RRC连接。通过该设计，第一终端设备可主动发起释放第一终端设备与目标小区之间的RRC连接。
第二方面，本申请实施例提供了一种通信装置，该装置可用于实现第一方面的方法。该装置可包括：
通信单元，用于当通信装置进入静止模式时，接收来自至少一个小区的系统信息；其中，来自至少一个小区的系统信息中包含用于指示至少一个小区中的任一小区的寻呼检测周期的信息；
处理单元，用于：测量至少一个小区的信号强度；根据至少一个小区的寻呼检测周期和信号强度，确定候选小区集合。其中，候选小区集合包括：至少一个小区中信号强度大于或等于第一阈值，且寻呼检测周期最大的小区；驻留至第一小区，其中，第一小区为候选小区集合中的小区。
在一种可能的设计中，处理单元还用于：在驻留至第一小区后，检测驻留的第一小区是否为配置发送多次寻呼消息的小区；当第一小区未配置发送多次寻呼消息时，驻留至候选小区集合中的下一个小区并检测是否为配置发送多次寻呼消息的小区；驻留至目标小区，目标小区为候选小区集合中的配置发送多次寻呼消息的小区。
在一种可能的设计中，处理单元具体用于：当在连续M个第一小区的寻呼检测周期中通过通信单元接收到M个来自第一小区的寻呼消息，且接收到的每个寻呼消息中均包含第二终端设备的标识信息时，确定第一小区为配置发送多次寻呼消息的小区；当未在连续M个第一小区的寻呼检测周期中通过通信单元接收到M个来自第一小区的寻呼消息，确定第一小区不是配置发送多次寻呼消息的小区；其中，M为大于或等于2的整数。
在一种可能的设计中，通信单元还用于：在驻留至目标小区之后，根据第一周期接收来自目标小区的寻呼消息；其中，第一周期为目标小区的寻呼检测周期的N倍，N为大于或等于2的整数。
在一种可能的设计中，处理单元具体用于：当候选小区集合中未包含配置发送多次寻呼消息的小区时，重新驻留至第一小区。
在一种可能的设计中，处理单元还用于：在驻留至目标小区之后，仅检测目标小区的信号强度。
在一种可能的设计中，处理单元还用于：当通信装置处于RRC连接态时，在检测目 标小区的信号强度之后，阻止测量报告的上报。
在一种可能的设计中，处理单元还用于：在驻留至第一小区之前，根据至少一个小区的信号强度，确定第一集合，其中，第一集合包括：至少一个小区中信号强度大于或等于第一阈值的小区；在驻留至第一小区之后，通信装置退出静止模式时，驻留至第一集合中制式最高的第四小区。
在一种可能的设计中，通信单元还用于：在驻留至目标小区之后，通信装置退出静止模式时，根据目标小区的寻呼检测周期，接收来自目标小区的寻呼消息。
在一种可能的设计中，处理单元还用于：在驻留至目标小区之后，当通信装置处于RRC连接态，且检测到通信装置没有上行数据和下行数据时，释放通信装置与目标小区之间的RRC连接。
第三方面，本申请实施例提供了一种通信装置，该装置可以是终端，还可以是用于终端的芯片。该装置具有实现上述第一方面的方法或其任一可能的实现方法的功能。该功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块。
第四方面，本申请实施例提供了一种通信装置，包括处理器和存储器，可选的，还包括收发器。该存储器用于存储计算机程序或指令，该处理器用于从存储器中调用并运行该计算机程序或指令，当处理器执行存储器中的计算机程序或指令时，使得该无线通信装置执行上述第一方面的方法或其任一可能的实现方法的功能。
可选的，处理器为一个或多个，存储器为一个或多个。
可选的，存储器可以与处理器集成在一起，或者存储器与处理器分离设置。
可选的，存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。
第五方面，本申请实施例提供了一种通信系统，包括：用于执行第一方面提供的方法的终端设备，以及用于与该终端设备进行通信的基站。
第六方面，本申请实施例还提供了一种计算机程序产品，计算机程序产品包括：计算机程序(也可以称为代码，或指令)，当所述计算机程序在计算机上运行时，使得所述计算机执行上述第一方面提供的方法。
第七方面，本申请实施例还提供了一种计算机可读存储介质，所述计算机可读存储介质中存储有计算机程序，当所述计算机程序被计算机执行时，使得所述计算机执行上述第一方面提供的方法。
第八方面，本申请实施例还提供了一种芯片，所述芯片用于读取存储器中存储的计算机程序，执行上述第一方面提供的方法。
第九方面，本申请实施例还提供了一种芯片系统，该芯片系统包括处理器，用于支持计算机装置实现上述第一方面提供的方法。在一种可能的设计中，所述芯片系统还包括存储器，所述存储器用于保存该计算机装置必要的程序和数据。该芯片系统可以由芯片构成，也可以包含芯片和其他分立器件。
第十方面，本申请实施例还提供了一种无线通信装置，包括：接口电路和处理电路。接口电路可以包括输入电路和输出电路。处理电路用于通过输入电路接收信号，并通过输出电路发射信号，使得第一方面及其中任一种可能实现方式中的方法被实现。
在具体实现过程中，无线通信装置可以为芯片，输入电路可以为输入管脚，输出电路可以为输出管脚，处理电路可以为晶体管、门电路、触发器和各种逻辑电路等。输入电路所接收的输入的信号可以是由例如但不限于接收器接收并输入的，输出电路所输出的信号可以是例如但不限于输出给发射器并由发射器发射的，且输入电路和输出电路可以是同一电路，该电路在不同的时刻分别用作输入电路和输出电路。本申请实施例对处理器及各种电路的具体实现方式不做限定。
在一种实现方式中，无线通信装置可以是无线通信设备，即支持无线通信功能的计算机设备。具体地，无线通信设备可以是诸如智能手机这样的终端，也可以是诸如基站这样的无线接入网设备。系统芯片也可称为片上系统(system on chip，SoC)，或简称为SoC芯片。通信芯片可包括基带处理芯片和射频处理芯片。基带处理芯片有时也被称为调制解调器(modem)或基带芯片。射频处理芯片有时也被称为射频收发机(transceiver)或射频芯片。在物理实现中，通信芯片中的部分芯片或者全部芯片可集成在SoC芯片内部。例如，基带处理芯片集成在SoC芯片中，射频处理芯片不与SoC芯片集成。接口电路可以为无线通信设备中的射频处理芯片，处理电路可以为无线通信设备中的基带处理芯片。
在又一种实现方式中，无线通信装置可以是无线通信设备中的部分器件，如系统芯片或通信芯片等集成电路产品。接口电路可以为该芯片或芯片系统上的输入/输出接口、接口电路、输出电路、输入电路、管脚或相关电路等。处理器也可以体现为处理电路或逻辑电路。
上述第二方面至第十方面中任一方面可以达到的技术效果可以参照上述第一方面可以达到的技术效果说明，重复之处不予论述。
附图说明
图1为本申请实施例提供的一种通信系统的架构图；
图2为本申请实施例提供的一种通信方法的流程图；
图3为本申请实施例提供的另一种通信方法的流程图；
图4为本申请实施例提供的另一种通信方法中UE分别处于空闲态和连接态的示意图；
图5为本申请实施例提供的一种通信装置的结构图；
图6为本申请实施例提供的一种通信装置的结构图。
具体实施方式
本申请提供一种通信方法及装置，用以降低终端设备的待机功耗。其中，方法和装置是基于同一技术构思的，由于解决问题的原理相似，因此装置与方法的实施可以相互参见，重复之处不再赘述。
以下，对本申请实施例中的部分用语进行解释说明，以便于本领域技术人员理解。
1)、基站，是通信系统中将终端设备接入到无线网络的设备。基站作为无线接入网中的节点，又可以称为网络设备，还可以称为无线接入网(radio access network，RAN)节点(或设备)，接入网(access network，AN)节点(或设备)，或者接入点(access point，AP)。
目前，一些基站的举例为：新一代节点B(generation Node B，gNB)、传输接收点 (transmission reception point，TRP)、演进型节点B(evolvedNode B，eNB)、节点B(Node B，NB)、家庭基站(例如，home evolved NodeB，或home Node B，HNB)，基带单元(base band unit，BBU)，企业长期演进(long term evolution，LTE)离散窄带聚合(Enterprise LTE discrete spectrum aggregation，eLTE-DSA)基站等。
另外，在一种网络结构中，基站可以包括集中单元(centralized unit，CU)节点和分布单元(distributed unit，DU)节点。这种结构将LTE系统中eNB的协议层拆分开，部分协议层的功能放在CU集中控制，剩下部分或全部协议层的功能分布在DU中，由CU集中控制DU。
2)、终端设备，是一种向用户提供语音和/或数据连通性的设备。终端设备又可以称为用户设备(user equipment，UE)、移动台(mobile station，MS)、移动终端(mobile terminal，MT)等。
例如，终端设备可以为具有无线连接功能的手持式设备、各种车载设备、路侧单元等。目前，一些终端设备的举例为：手机(mobile phone)、平板电脑、笔记本电脑、掌上电脑、移动互联网设备(mobile internet device，MID)、智能销售终端(point of sale，POS)、可穿戴设备，虚拟现实(virtual reality，VR)设备、增强现实(augmented reality，AR)设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程手术(remote medical surgery)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端、各类智能仪表(智能水表、智能电表、智能燃气表)、eLTE-DSA UE、具有接入回传一体化(integrated access and backhaul，IAB)能力的设备、车载电子控制单元(electronic control unit，ECU)等、车载电脑、车载巡航系统、远程信息处理器(telematics box，T-BOX)等。
3)、无线资源控制(radio resource control，RRC)连接状态。在移动通信系统中，终端设备的RRC连接状态包括：RRC连接态(RRC_connected，简称连接态)、RRC空闲态(RRC_idle，简称空闲态)。
终端设备处于空闲态时，终端设备与基站的RRC连接断开，基站与终端设备不再保存终端设备上下文信息，终端设备可以接收基站发送的广播信息(例如系统信息)和寻呼消息。
终端设备处于连接态时，终端设备与基站之间存在RRC连接，且二者能够通过所述RRC连接进行通信。在RRC连接态，如果出现小区切换失败、无线链路失败、RRC连接重配(RRC connection reconfiguration)流程失败等情况，终端设备会触发RRC连接重建流程。
4)、无线接入技术(radio access technology，RAT)，为移动通信系统采用的通信技术。例如，RAT可以但不限于包括：第四代(4th generatoin，4G)、第五代(5th generatoin，5G)、微波存取全球互联(world interoperability for microwave access，WiMAX)等，还可以包括未来的通信技术，例如，第六代(6th generatoin，6G)移动通信系统。使用5G无线接入技术的系统可以称为5G移动通信系统，使用4G无线接入技术的系统可以称为4G移动通信系统。另外，RAT也可称为制式。
本申请实施例中，对于名词的数目，除非特别说明，表示“单数名词或复数名词”，即“一个或多个”。“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“和/或”描述关联 对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。“以下至少一项(个)”或其类似表达，是指这些项(个)中的任意组合，包括单项(个)或复数项(个)的任意组合。
另外，需要理解的是，在本申请的描述中，“第一”、“第二”等词汇，仅用于区分描述的目的，而不应理解为指示或暗示相对重要性，也不应理解为指示或暗示顺序。
下面将结合附图，对本申请实施例进行详细描述。
图1示出了本申请实施例提供的方法适用的一种移动通信系统的结构。参阅图1所示，在该移动通信系统中包括：基站和终端设备。
基站，是网络侧能够接收和发射无线信号的实体，负责为处于其覆盖范围内的终端设备提供无线接入有关的服务，实现物理层功能、资源调度和无线资源管理、服务质量(Quality of Service，QoS)管理、无线接入控制以及移动性管理功能。通过基站，终端设备能够接入核心网，并最终接续到数据网络中，以实现终端设备的业务。
终端设备，为用户侧能够接收和发射无线信号的实体，可以通过接入基站管理的小区接入网络。终端设备可以为各种为用户提供语音和/或数据连通性的设备，例如车载设备、智能手机等。终端设备与基站通过Uu接口连接，实现二者之间的通信。
基站通过管理的小区为终端设备提供接入和通信服务。为了表述清晰和简洁，本申请实施例的描述中，将网络侧基站的功能记为小区的功能。应理解，后续描述中小区执行的操作和步骤，实际上为管理该小区的基站执行的操作和步骤。
在移动通信系统中，每个基站负责管理至少一个小区，每个小区均使用相应的频谱资源为终端设备提供通信服务。如图1所示，基站A管理小区1和小区2，基站B管理小区3。其中，基站A为小区1配置载波1中的频谱资源，为小区2配置载波2的频谱资源；基站B为小区3配置载波3中的频谱资源。
正在为终端设备提供接入和通信服务的小区称为终端设备的服务小区，与所述服务小区的位置相邻的小区可以称为邻区。
还需要指出的是，如图1所示的移动通信系统作为示例，并不对本申请实施例提供的方法适用的移动通信系统构成限定。总之，本申请实施例还可以应用于各种类型和制式的通信系统，例如：4G通信系统、5G通信系统、第六代(The 6th Generation，6G)通信系统，以及未来演进的其他制式的通信系统，长期演进-车联网(LTE-vehicle，LTE-V)系统等。
为了便于理解本申请，下面对相关背景技术进行说明。
一、小区驻留：
当终端设备选择驻留小区时，终端设备可进行小区搜索。当目标小区满足驻留条件时，终端设备即可发起对该目标小区的驻留。
例如，终端设备的非接入层(non-access stratum，NAS)层可发起对指定制式(例如，5G)的小区的搜索(也可以称为对指定制式的搜网)。具体的，终端设备的NAS层向终端设备的接入层发送驻留需要的信息(例如，指定的公共陆地移动网(public land mobile network，PLMN)和/或跟踪区域码(tracking area code，TAC))，终端设备的接入层(例如，RRC层)根据驻留需要的信息进行小区搜索，例如，对与该PLMN和TAC对应的指 定制式的目标小区进行搜索。若目标小区满足驻留条件，则终端设备的RRC层可发起向该目标小区的驻留。
在该方法中，终端设备选择驻留小区时，仅考虑小区是否满足驻留条件，没有考虑到终端设备接入到该小区的功耗，因此，终端设备驻留到选择的小区之后，待机功耗可能会较高。
二、寻呼消息的检测：
终端设备在驻留至服务小区之后，终端设备接收到来自服务小区的系统消息，系统消息中包含该服务小区的非连续接收(discontinuous reception，DRX)周期。终端设备的接入层可解析出该DRX周期，并将该DRX周期发送给物理层。然后，终端设备的物理层可按照该DRX周期来检测来自服务小区的寻呼消息。换句话说，终端设备在驻留至服务小区并接收到来自服务小区的系统消息之后，即可按照系统消息中的DRX周期来检测服务小区的寻呼消息。
有些小区可配置发送多次寻呼消息。例如，有些小区可在连续多个DRX周期中重复发送相同的被叫寻呼消息，终端设备接收到其中一个被叫寻呼消息，即可显示来电。目前，即便服务小区为配置发送多次寻呼消息的小区，终端设备仍使用DRX周期来检测寻呼消息，从而增加终端设备的功耗。
三、小区重选：
终端设备处于空闲态时，在驻留到服务小区之后，终端设备可通过测量服务小区和邻小区的信号强度来持续的进行小区重选，以便驻留到优先级更高或信道质量更好的小区。其中，邻小区可包括以下至少一项：同频邻小区、异频邻小区、异系统邻小区。其中，异系统邻小区为与服务小区使用不同RAT的小区。
当终端设备静止且处于空闲态时，若终端设备的服务小区的信号强度超过第一设定强度阈值，终端设备并没有移动性需求，不需要重选小区。但是，采用上述方法时，在这种情况下，终端设备仍需对邻小区的信号强度进行测量，从而增加终端设备的功耗。
四、小区切换：
终端设备处于连接态时，基站可通过RRC连接重配置消息向终端设备发送测量配置信息。终端设备根据基站下发的测量配置信息，测量服务小区和邻小区的信号强度，并上报测量结果。然后，基站可根据测量结果判决是否进行切换。
当终端设备静止且处于连接态时，若终端设备的服务小区的信号强度超过第二设定强度阈值，终端设备并没有移动性需求，不需要进行小区切换。但是，采用上述方法时，在这种情况下，终端设备仍需对服务小区和邻小区的信号强度进行测量，并上报测量报告，从而增加终端设备的功耗。
五、RRC连接的释放：
目前，RRC连接的释放是由基站发起的。但是，对于上行数据，基站并不知道何时终端设备发送完上行数据。这样，在终端设备和基站之间的数据传输完成之后，该RRC连接不能及时被释放，从而造成资源浪费。
下面结合附图对本申请提供的方案进行说明。
本申请实施例提供了一种通信方法，该方法可应用于图1所示的通信系统中。下面参阅图2所示的流程图，对该方法的流程进行具体说明。
S201：第一终端设备进入静止模式。
在一些可能的方式中，第一终端设备的应用层可在确定第一终端设备满足进入静止模式的条件时，指示第一终端设备进入静止模式。例如，第一终端设备的应用层可在确定第一终端设备满足进入静止模式的条件时，向第一终端设备的协议栈(Modem)发送用于指示第一终端设备进入静止模式的指示。
可选的，进入静止模式的条件可包括以下至少一项：
条件1：在第三时长内，第一终端设备的位置不变；
条件2：在第四时长内，第一终端设备未检测到用户对所述第一终端设备的操作；
条件3：在第五时长内，第一终端设备中的应用程序均处于关闭或待机状态。
下面说明第一终端设备的应用层如何确定第一终端设备满足条件1-条件3。
对于条件1：
第一终端设备的应用层可获取预先配置的第三时长或者其他通信设备(例如，基站等)指示的第三时长。第一终端设备的应用层可通过第一终端设备的位置检测装置(例如，全球定位系统(global positioning system，GPS)定位器)获取第一终端设备的位置；或者通过运动传感器等装置检测第一终端设备的位置是否发生变化。当在第三时长内，第一终端设备的应用层获取的第一终端设备的位置相同时，第一终端设备的应用层可确定第一终端设备满足条件1；否则，第一终端设备的应用层可确定第一终端设备不满足条件1。
对于条件2：
第一终端设备的应用层可获取预先配置的第四时长或者其他通信设备(例如，基站等)指示的第四时长。第一终端设备的应用层可通过第一终端设备的输入输出装置(例如，触摸屏，音量键等控制键)获取用户对第一终端设备的操作。当在第四时长内，第一终端设备的应用层始终未获取到用户对第一终端设备进行操作时，第一终端设备的应用层可确定第一终端设备满足条件2；否则，第一终端设备的应用层可确定第一终端设备不满足条件2。
对于条件3：
第一终端设备的应用层可获取预先配置的第五时长或者其他通信设备(例如，基站等)指示的第五时长。第一终端设备的应用层可检测第一终端设备中各应用程序的工作状态。当在第五时长内，第一终端设备的应用层检测到第一终端设备中的应用程序均处于关闭或待机状态(换句话说，在第五时长内，第一终端设备的用户未使用第一终端设备中的应用程序)时，第一终端设备的应用层可确定第一终端设备满足条件3；否则，第一终端设备的应用层可确定第一终端设备不满足条件3。
在另一些可能的方式中，第一终端设备可基于用户或其他通信设备的指示进入静止模式。例如，第一终端设备可检测到用户输入的进入静止模式的指令，从而进入静止模式。又例如，第一终端设备与第一通信设备为配对的设备，一个示例为：第一终端设备为手机，第一通信设备为手表。第一通信设备检测到用户输入的进入静止模式的指令后，向第一终端设备发送进入静止模式的指示，从而使得第一终端设备进入静止模式。
S202：第一终端设备接收来自至少一个小区的系统信息。其中，来自至少一个小区中任一小区的系统信息中包含用于指示任一小区的寻呼检测周期的信息。
例如，第一终端设备接收来自小区1的系统信息1，系统信息1中包含用于指示小区1的寻呼检测周期的信息。第一终端设备接收来自小区2的系统信息2，系统信息2中包 含用于指示小区2的寻呼检测周期的信息。通过系统信息1和系统信息2，第一终端设备可分别确定出小区1的寻呼检测周期和小区2的寻呼检测周期。
可选的，用于指示任一小区的寻呼检测周期的信息可直接为该任一小区的寻呼检测周期(例如，该用于指示任一小区的寻呼检测周期的信息为32毫秒(ms))，也可以间接指示该任一小区的寻呼检测周期(例如，当用于指示任一小区的寻呼检测周期的信息为第一值时，该任一小区的寻呼检测周期为32ms)。
其中，寻呼检测周期可为DRX周期。
S203：第一终端设备测量至少一个小区的信号强度。
其中，第一终端设备可通过测量以下至少一项参数来测量至少一个小区的信号强度：参考信号接收功率(reference signal receiving power，RSRP)、参考信号接收质量(reference signal receiving quality，RSRQ)、接收的信号强度指示(received signal strength indication，RSSI)、或信号与干扰加噪声比(signal to interference plus noise ratio，SINR)。
本申请对S202和S203的执行顺序不作限定。可以先执行S202，再执行S203；也可以先执行S203，再执行S202；还可同时执行S202和S203。
S204：第一终端设备根据至少一个小区的信号强度以及寻呼检测周期，确定候选小区集合。
其中，候选小区集合可包括：至少一个小区中信号强度大于或等于第一阈值，且寻呼检测周期最大的小区。例如，至少一个小区包括：小区1、小区2和小区3。根据S202中接收的系统信息，第一终端设备确定小区1的寻呼检测周期为32ms，小区2的寻呼检测周期为64ms，小区3的寻呼检测周期为64ms。根据S203中测量的信号强度，第一终端设备确定小区1、小区2和小区3的信号强度均大于第一阈值。此时，第一终端设备可确定候选小区集合包括：小区2和小区3。
可选的，在S204中，第一终端设备还可确定并保存第一集合，第一集合包括所述至少一个小区中信号强度大于第一阈值的小区。例如，至少一个小区包括：小区1、小区2和小区3。根据S203中测量的信号强度，第一终端设备确定小区1、小区2和小区3的信号强度均大于第一阈值。此时，第一终端设备可确定第一集合包括：小区1、小区2和小区3。
S205：第一终端设备驻留至第一小区。其中，第一小区为候选小区集合中的小区。
通过该方法，第一终端设备在选择驻留小区时，不但考虑小区的信号强度，还考虑小区的寻呼检测周期。通过选择信号强度大于或等于第一阈值，且寻呼检测周期最大的小区来驻留，可以使得第一终端设备至少采用最大的寻呼检测周期来检测寻呼消息，从而可降低第一终端设备的待机功耗。
为进一步节省功耗，当候选小区集合中包含多个小区时，第一终端设备可通过如下实现方式之一驻留至候选小区集合中的小区。
实现方式一：第一终端设备驻留至候选小区集合中配置发送多次寻呼消息的小区(即目标小区)。
其中，该实现方式一可包括步骤A1-A2：
A1：第一终端设备可检测候选小区集合中是否包含配置发送多次寻呼消息的小区。
其中，第一终端设备可按照设定的顺序逐个检测候选小区集合中是否包含配置发送多 次寻呼消息的小区，也可以按照随机顺序逐个检测候选小区集合中是否包含配置发送多次寻呼消息的小区。当检测到候选小区集合中包含配置发送多次寻呼消息的小区时，第一终端设备可停止检测，并继续驻留至该小区。
可选的，设定的顺序为以下至少一项：
1、小区的制式从高到低的顺序：例如(下面称为示例一)，当候选小区集合包括：5G的小区A、第三代(3rd generatoin，3G)的小区B、4G的小区C时，该顺序为：小区A、小区C和小区B。
2、第一终端设备在各制式小区中的功耗从低到高的顺序：例如，候选小区集合包括：5G的小区A、3G的小区B、4G的小区C，第一终端设备在5G小区中的功耗最低，在4G小区中的功耗最高；此时，该顺序为：小区A、小区B和小区C。其中，第一终端设备在各制式小区中的功耗可由第一终端设备自行检测；也可以是在出厂之前检测并存储在第一终端设备中的。
可选的，步骤A1可包括步骤B1-B2：
B1：第一终端设备检测当前的服务小区(例如，第一小区)是否为配置发送多次寻呼消息的小区。
其中，当前的服务小区可为第一终端设备根据上述设定的顺序或随机顺序选择候选小区集合中的小区。例如，对于上述示例一，在步骤B1中，当前的服务小区可为小区A。
B2：当检测到当前的服务小区为配置发送多次寻呼消息的小区时，第一终端设备可确定该小区为目标小区；当检测到当前的服务小区不是配置发送多次寻呼消息的小区时，第一终端设备可驻留至候选小区集合中的下一个小区。
其中，第一终端设备检测当前的服务小区是否为配置发送多次寻呼消息的小区的方式可参见下文中对步骤B1的说明。
针对候选小区集合中的每个小区，第一终端设备可执行B1-B2，直至检测到配置发送多次寻呼消息的小区或者检测完候选小区集合中的所有小区。
例如，对于上述示例一，在B1中，当检测到小区A为配置发送多次寻呼消息的小区时，第一终端设备可确定小区A为目标小区；当检测到小区A不是配置发送多次寻呼消息的小区时，第一终端设备可驻留至小区C，并将小区C作为当前的服务小区执行步骤B1-B2，直至检测到配置发送多次寻呼消息的小区或者检测完候选小区集合中的所有小区。
该方法提供了一种可能的检测候选小区集合中是否包含配置发送多次寻呼消息的小区的方法，易于实现。
可选的，在步骤B2中，当在第一时长内未检测到当前的服务小区为配置发送多次寻呼消息的小区时，第一终端设备可驻留至候选小区集合中的下一个小区。即第一终端设备检测当前的服务小区是否为配置发送多次寻呼消息的小区的时间不能超过第一时长。例如，第一终端设备可在驻留至当前的服务小区之后启动定时时间为第一时长的第一定时器；当第一定时器的定时时间到达时，如果第一终端设备仍未检测到当前的服务小区为配置发送多次寻呼消息的小区，则驻留至候选小区集合中的下一个小区。
其中，第一时长可以是预先配置的(例如，非易失性(NonVolatile，NV)随机存取存储器(random access memory，RAM)中配置有检测定时器时长T1，T1即为第一时长)， 也可以是第一终端设备从其他通信设备(例如，基站)获取的。
通过该方法，可限制第一终端设备检测候选小区集合中是否包含配置发送多次寻呼消息的小区的总时长，避免第一终端设备一直在检测候选小区集合中是否包含配置发送多次寻呼消息的小区，从而减少第一终端设备选择驻留小区的时间。
下面以当前的服务小区为第一小区为例，说明步骤B1的可能的实现方式。
在步骤B1中，第一终端设备可通过如下步骤检测第一小区是否包含配置发送多次寻呼消息的小区：
第一终端设备可按照第一小区的寻呼检测周期检测来自第一小区的寻呼消息。当在连续M个第一小区的寻呼检测周期中接收到M个来自第一小区的寻呼消息，且接收到的每个寻呼消息中均包含第二终端设备的标识信息时，换句话说，当在连续M个第一小区的寻呼检测周期中的每个寻呼检测周期内，第一终端设备均接收到来自第一小区的相同的寻呼消息时，第一终端设备可确定第一小区为配置发送多次寻呼消息的小区；否则，第一终端设备可确定第一小区不是配置发送多次寻呼消息的小区。其中，M为大于或等于2的整数。
可选的，第一终端设备可通过如下步骤检测是否在连续M个第一小区的寻呼检测周期中的每个寻呼检测周期内均接收到来自第一小区的寻呼消息，且接收到的每个寻呼消息中均包含第二终端设备的标识信息。
C1：第一终端设备在接收到来自第一小区的被叫寻呼之后，保存该被叫寻呼中的UE标识(ue-Identity)，并记录接收到该被叫寻呼的时间(下面简称为第一时间)。
C2：第一终端设备在第二时间接收到来自第一小区的下一条被叫寻呼之后，计算第二时间和第一时间之间的时间差。若该时间差小于或等于时间差阈值(即，在DRX误差范围内)，则表示这两条被叫寻呼是在连续两个第一小区的寻呼检测周期内接收到的，此时可执行步骤C3；否则，针对步骤C2中接收到的被叫寻呼，执行步骤C1，也就是说，将步骤C1中接收到的被叫寻呼替换为步骤C2中接收到的被叫寻呼。
C3：第一终端设备判断通过步骤C1接收到的被叫寻呼中的ue-Identity和通过步骤C2接收到的下一条被叫寻呼中的ue-Identity是否相同；如果是，则第一终端设备可确定第一小区为配置发送多次寻呼消息的小区；否则，针对步骤C2中接收到的被叫寻呼，执行步骤C1，也就是说，将步骤C1中接收到的被叫寻呼替换为步骤C2中接收到的被叫寻呼。
应理解，对于候选小区集合中的任一小区(例如，第二小区)，第一终端设备均可通过上述方法检测该小区是否为配置发送多次寻呼消息的小区，只是将其中的第一小区替换为第二小区。
通过该方法，对于任一小区，第一终端设备可通过检测寻呼消息确定该小区是否为配置发送多次寻呼消息的小区，操作较为简单。
可选的，第三小区可为候选小区集合中的任一小区，第一终端设备可根据第二周期检测第三小区是否为配置发送多次寻呼消息的小区，即，第一终端设备使用第二周期检测第三小区是否为配置发送多次寻呼消息的小区。例如，在第K个第二周期内，第一终端设备检测第三小区是否为配置发送多次寻呼消息的小区，检测的方式可参考步骤B1；当第一终端设备未检测到第三小区为配置发送多次寻呼消息的小区时，第一终端设备可在第K+1个第二周期内，检测第三小区是否为配置发送多次寻呼消息的小区。其中，K为正整数。
其中，第二周期可大于第三小区的寻呼检测周期，例如，第二周期为5分钟，第三小区的寻呼检测周期为64ms。
另外，第二周期可以是预先配置的，也可以是第一终端设备从其他通信设备(例如，基站)获取的。
在实际应用中，某一小区可能为配置发送多次寻呼消息的小区；但是，当第一终端设备检测该小区是否为配置发送多次寻呼消息的小区时，该小区可能并没有发送寻呼消息，这样，第一终端设备可能没有检测到该小区为配置发送多次寻呼消息的小区。通过第二周期来周期性的检测小区是否为配置发送多次寻呼消息的小区，可以提高检测小区是否为配置发送多次寻呼消息的小区的准确率。
A2：当检测到候选小区集合中包含配置发送多次寻呼消息的小区时，第一终端设备可停止检测，并继续驻留至配置发送多次寻呼消息的小区(即目标小区)。
由于在检测目标小区是否为配置发送多次寻呼消息的小区时，第一终端设备已经驻留在这个目标小区中，因此，第一终端设备也不再执行小区切换等操作。
通过该实现方式一，第一终端设备可驻留至候选小区集合中配置发送多次寻呼消息的目标小区。当第一终端设备处于静止模式，且驻留在配置发送多次寻呼消息的小区时，第一终端设备可进一步拉长检测寻呼消息的周期，从而进一步降低第一终端设备的功耗。
实现方式二：第一终端设备驻留至候选小区集合中制式最高的小区(即第一小区)中。
例如，候选小区集合包括：5G的小区A、3G的小区B、4G的小区C。第一终端设备可驻留至小区A(即第一小区)中。
实现方式三：第一终端设备随机驻留至候选小区集合中的一个小区(即第一小区)中。
例如，候选小区集合包括：5G的小区A、3G的小区B、4G的小区C。第一终端设备可随机选择小区A、小区B和小区C中的任一个为第一小区，并驻留在第一小区中。
实现方式四：第一终端设备驻留至候选小区集合中第一终端设备的功耗最低的制式的小区(即第一小区)中。
例如，候选小区集合包括：5G的小区A、3G的小区B、4G的小区C，第一终端设备在5G小区中的功耗最低，在4G小区中的功耗最高。第一终端设备可驻留至小区A(即第一小区)中。
可选的，第一终端设备可在通过S204确定候选小区集合之后，即通过实现方式二、实现方式三、实现方式四中的任一方式驻留至第一小区；也可以在检测到候选小区集合中的小区都不是配置发送多次寻呼消息的小区(检测的具体方式可参考实现方式一)时，重新驻留至第一小区，例如，第一终端设备通过实现方式二、实现方式三、实现方式四中的任一方式驻留至第一小区。
可选的，在本申请实施例的一些可能的实现方式中，在步骤S205之后，所述方法还包括：
S206：当前的服务小区(例如，目标小区)为配置发送多次寻呼消息的小区时，第一终端设备可根据第一周期接收来自当前的服务小区的寻呼消息。其中，第一周期为当前的服务小区的寻呼检测周期的N倍，N为大于或等于2的整数。
其中，第一终端设备可仅调整一次用于接收当前的服务小区的寻呼消息的周期；也可 以多次调整用于接收当前的服务小区的寻呼消息的周期，使得用于接收当前的服务小区的寻呼消息的周期逐渐变长。下面对第一终端设备多次调整用于接收当前的服务小区的寻呼消息的周期进行说明。
第一终端设备通过步骤A1检测到当前的服务小区为配置发送多次寻呼消息的小区之后，可根据第一周期1接收来自当前的服务小区的寻呼消息。其中，第一周期1为当前的服务小区的寻呼检测周期的N1倍，N1为大于或等于2的整数。第一终端设备使用第一周期1来检测当前的服务小区是否为配置发送多次寻呼消息的小区，检测方式可参考步骤A1，只是将其中的第一小区的寻呼检测周期替换为第一周期1。当第一终端设备使用第一周期1检测到当前的服务小区为配置发送多次寻呼消息的小区时，第一终端设备可根据第一周期2接收来自当前的服务小区的寻呼消息，其中，第一周期2为当前的服务小区的寻呼检测周期的N2倍，N2为大于或等于2的整数，N2大于N1。可选的，第一终端设备可使用第一周期2来检测当前的服务小区是否为配置发送多次寻呼消息的小区，直至用于接收当前的服务小区的寻呼消息的周期达到第三阈值。其中，第三阈值可以是预先设定好的，也可以是从其他通信设备(例如，基站)获取的。
此外，第一终端设备可复用步骤A1的结果来确定当前的服务小区为配置发送多次寻呼消息的小区；也可以在驻留至当前的服务小区之后和/或接收到来自当前的服务小区的用于指示系统消息更新的消息之后，参考实现方式一中的方法确定当前的服务小区为配置发送多次寻呼消息的小区。
由于当前的服务小区为配置发送多次寻呼消息的小区，当前的服务小区可在连续多个当前的服务小区的寻呼检测周期内发送相同的寻呼消息。第一终端设备处于静止模式时，只要接到来自当前的服务小区的一个寻呼消息即可进行对应的操作。例如，第一终端设备处于静止模式时，只要接到来自当前的服务小区的一个被叫寻呼即可显示来电信息。通过该方法，当当前的服务小区为配置发送多次寻呼消息的小区时，第一终端设备根据当前的服务小区的寻呼检测周期的倍数接收来自当前的服务小区的寻呼消息，而不是每个寻呼周期都接收来自当前的服务小区的寻呼消息，从而可以降低第一终端设备的功耗。
可选的，在本申请实施例的一些可能的实现方式中，在步骤S205之后，所述方法还包括：
S207：第一终端设备仅检测当前的服务小区(例如，第一小区或目标小区)的信号强度。换句话说，第一终端设备在静止模式下检测服务小区的信号强度，不检测邻小区的信号强度。
其中，信号强度的参数可参考S203，此处不再赘述。
在静止模式下，第一终端设备没有移动性需求，不需要进行小区重选或小区切换。通过该方法，在静止模式下，第一终端设备仅检测服务小区的信号强度，不检测邻小区的信号强度，从而可以降低第一终端设备的功耗。
此外，当S207与S201-S205结合时，S204中的候选小区集合可以为：包括至少一个小区中信号强度大于或等于第一阈值的小区的集合。此时，在静止模式下，第一终端设备仅检测服务小区的信号强度，不检测邻小区的信号强度，也可以降低第一终端设备的功耗。
另外，本申请对S206和S207的执行顺序不作限定。
可选的，在本申请实施例的一些可能的实现方式中，S207可包括如下步骤D1-D2：
D1：第一终端设备使用第三周期检测当前的服务小区(例如，目标小区或第一小区)的信号强度。
其中，第三周期可为第一终端设备的物理层确定的用于检测小区信号强度的周期。
D2：当第二时长内当前的服务小区的信号强度均大于或等于第二阈值时，第一终端设备可使用大于第三周期的第四周期检测当前的服务小区的信号强度。
其中，第二时长和/或第二阈值可以是预先配置的，也可以第一终端设备是从其他设备(例如基站)获取的。
可选的，当第二时长内当前的服务小区的信号强度均大于或等于第二阈值时，第一终端设备的物理层可重新确定用于检测小区信号强度的周期(即第四周期)，该第四周期大于第三周期。
通过该方法，当第一终端设备检测到在第二时长内当前的服务小区的信号强度持续大于或等于第二阈值时，第一终端设备可采用更大的周期来检测当前的服务小区的信号强度，从而拉长检测当前的服务小区信号强度的时间间隔；这样，第一终端设备停止检测当前的服务小区的信号强度的时间也更长，从而可降低第一终端设备的功耗。
可选的，在本申请实施例的一些可能的实现方式中，当第一终端设备处于RRC连接态时，在S205之后，第一终端设备可阻止测量报告的上报。
在静止模式下，第一终端设备没有移动性需求；这样，即便第一终端设备处于RRC连接态，也不需要进行小区切换。通过该方法，在静止模式下，第一终端设备不上报测量报告，从而可以降低第一终端设备的功耗，同时还可节约用于传输测量报告的资源。并且，第一终端设备不上报测量报告，也可以避免不必要的触发基站发起小区切换。
可选的，在本申请实施例的一些可能的实现方式中，在S205之后，第一终端设备可通过以下实现方式之一来执行退出静止模式之后的操作。
实现方式1：在退出静止模式之后，第一终端设备更换驻留小区。
该实现方式1可包括步骤E1-E2：
E1：第一终端设备退出静止模式。
在一些可能的方式中，第一终端设备的应用层可在确定第一终端设备满足退出静止模式的条件时，指示第一终端设备退出静止模式。例如，第一终端设备的应用层可在确定第一终端设备满足退出静止模式的条件时，向第一终端设备的协议栈发送用于指示第一终端设备退出静止模式的指示。
可选的，退出静止模式的条件可包括以下至少一项：
条件一：在第六时长内，第一终端设备的位置发生变化；
条件二：在第七时长内，第一终端设备检测到用户对所述第一终端设备的操作；
条件三：在第八时长内，第一终端设备中的一个或多个应用程序处于工作状态。
下面说明第一终端设备的应用层如何确定第一终端设备满足条件一-条件三。
对于条件一：
第一终端设备的应用层可获取预先配置的第六时长或者其他通信设备(例如，基站等)指示的第六时长。第一终端设备的应用层可通过第一终端设备的位置检测装置(例如，GPS 定位器)获取第一终端设备的位置。当在第六时长内，第一终端设备的应用层获取到的第一终端设备的位置发生变化时，第一终端设备的应用层可确定第一终端设备满足条件一；否则，第一终端设备的应用层可确定第一终端设备不满足条件一。
对于条件二：
第一终端设备的应用层可获取预先配置的第七时长或者其他通信设备(例如，基站等)指示的第七时长。第一终端设备的应用层可通过第一终端设备的输入输出装置(例如，触摸屏，音量键等控制键)获取用户对第一终端设备的操作。当在第七时长内，第一终端设备的应用层获取到用户对第一终端设备进行的操作(例如，第一终端设备的应用层通过第一终端设备的音量键获取到用户提高音量的操作)时，第一终端设备的应用层可确定第一终端设备满足条件二；否则，第一终端设备的应用层可确定第一终端设备不满足条件二。
对于条件三：
第一终端设备的应用层可获取预先配置的第八时长或者其他通信设备(例如，基站等)指示的第八时长。第一终端设备的应用层可检测第一终端设备中各应用程序的工作状态。当在第八时长内，第一终端设备的应用层检测到第一终端设备中的一个或多个应用程序处于工作状态时，第一终端设备的应用层可确定第一终端设备满足条件三；否则，第一终端设备的应用层可确定第一终端设备不满足条件三。
在另一些可能的方式中，第一终端设备可基于用户或其他通信设备的指示退出静止模式。例如，第一终端设备可检测到用户输入的退出静止模式的指令，从而退出静止模式。又例如，第一终端设备与第一通信设备为配对的设备，一个示例为：第一终端设备为手机，第一通信设备为手表。第一通信设备检测到用户输入的退出静止模式的指令后，向第一终端设备发送退出静止模式的指示，从而使得第一终端设备退出静止模式。
E2：第一终端设备驻留至S204中保存的第一集合中制式最高的第四小区。
例如，第一集合可包括：5G的小区A、3G的小区B、4G的小区C；第一终端设备退出静止模式前驻留的小区为小区C。在步骤E2中，第一终端设备可驻留至小区A(即第四小区)。
在S204中，第一终端设备可保存第一集合；这样，在本实现方式1中，在退出静止模式之后，第一终端设备可快速驻留到第一集合中制式最高的第四小区，无需重新对小区进行测量，从而减少更换驻留小区(也可称为小区重选)的时间。
实现方式2：在退出静止模式之后，第一终端设备不更换驻留小区。
该实现方式2可包括步骤F1-F2：
F1：第一终端设备退出静止模式。
F1的具体内容可参考E1，此处不再赘述。
F2：第一终端设备根据当前的服务小区(例如，目标小区或第一小区)的寻呼检测周期，接收来自当前的服务小区的寻呼消息，即第一终端设备使用当前的服务小区的寻呼检测周期，接收来自当前的服务小区的寻呼消息。
第一终端设备退出静止模式之后，如果还按照当前的服务小区的寻呼检测周期的倍数接收来自当前的服务小区的寻呼消息，有可能因为第一终端设备的移动而没有接收到来自当前的服务小区的寻呼消息。在本实现方式2中，在退出静止模式之后，第一终端设备使用当前的服务小区的寻呼检测周期接收来自当前的服务小区的寻呼消息，可提高第一终端设备接收到来自当前的服务小区的寻呼消息的可能性。
可选的，在本申请实施例的一些可能的实现方式中，上述方法还包括：
G1：第一终端设备处于RRC连接态，且检测到第一终端设备没有上行数据和下行数据时，第一终端设备释放第一终端设备与当前的服务小区(例如，目标小区或第一小区)之间的RRC连接。
在一些可能的方式中，在第一终端设备向当前的服务小区发送上行数据之后的第一设定时长内，如果第一终端设备没有接收到来自当前的服务小区的下行数据，则第一终端设备可确定第一终端设备没有上行数据和下行数据。此时，第一终端设备可释放第一终端设备与当前的服务小区之间的RRC连接。其中，第一设定时长可以是预先配置的，也可以是第一终端设备从其他通信设备(例如，基站)获取的。
在另一些可能的方式中，当第一终端设备在第二设定时长内没有接收到来自当前的服务小区的下行数据，且第一终端设备也没有需要发送的上行数据时，第一终端设备可确定第一终端设备没有上行数据和下行数据。此时，第一终端设备可释放第一终端设备与当前的服务小区之间的RRC连接。其中，第二设定时长可以是预先配置的，也可以是第一终端设备从其他通信设备(例如，基站)获取的。
通过该方法，第一终端设备可主动发起释放第一终端设备与当前的服务小区之间的RRC连接。
本申请实施例提供了一种通信方法。该方法示出了图2所示方法的一种可能的示例。下面参阅图3所示的流程图，以终端设备为UE为例，对该方法进行说明。
S301：UE的应用(application，AP)层在确定UE满足进入静止模式的条件之后，可通知UE的协议栈(Modem)进入静止模式。
其中，UE的AP层确定UE满足进入静止模式的条件的方法可参考S201，此处不再赘述。
当UE没有驻留至任何小区时，在S301之后，可先执行S302-S304，再执行S305；当UE已驻留至服务小区时，在S301之后，可执行S305。
S302：UE的NAS层可发起对第一制式(例如，5G)的小区的测量(即发起搜网)。
其中，第一制式可为NAS层指定的制式。
S303：UE的RRC层可测量第一制式的小区的信号强度，当第一制式的小区的信号强度大于或等于第一阈值时，UE的RRC层可发起向该小区的驻留。UE驻留至该小区之后，该小区即为UE当前的服务小区。
其中，该第一阈值可为NV定制能量门限。
S302-S303的内容可参考上文中对“小区驻留”的说明，此处不再赘述。
S304：UE的RRC层获取服务小区的寻呼检测周期(例如，DRX周期)。
具体的，UE的RRC层可接收来自服务小区的系统信息，该系统信息中可包含服务小区的DRX周期。
S305：UE确定第一候选小区集合。
其中，第一候选小区集合包括：能够为UE服务的每个制式的邻小区中信号强度超过第一阈值，且DRX周期最长的小区。
例如(下面称为示例1)，UE的服务小区为5G的小区一，邻小区包括：3G的小区二、4G的小区三、5G的小区四、5G的小区五。其中，小区二、小区三、小区四和小区五的信 号强度均大于或等于第一阈值。小区二的DRX周期为32ms，小区三的DRX周期为64ms，小区四的DRX周期为64ms，小区五的DRX周期为32ms。此时，UE可确定第一候选小区集合包括：4G的小区三和5G的小区四。
其中，UE测量小区的信号强度和确定DRX周期的方法可参考S202-S204，此处不再赘述。
S306：UE确定第二候选小区集合(即图2所示方法中的候选小区集合)。
其中，UE可对第一候选小区集合中的小区和服务小区按照DRX周期进行排序，得到第二候选小区集合。第二候选小区集合包括：能够为UE服务的每个制式的小区中信号强度大于或等于第一阈值，且DRX周期最长的小区。可选的，对于任一制式，当信号强度大于或等于第一阈值，且DRX周期最长的小区为多个时，UE可从中随机选择一个作为第二候选小区集合中的小区；也可选择当前的服务小区作为第二候选小区集合中的小区；还可选择其中信号强度最大的小区作为第二候选小区集合中的小区。
例如，在示例1的基础上，当小区一的DRX周期大于64ms时，第二候选小区集合包括小区一；或者，当小区一的DRX周期小于64ms时，第二候选小区集合包括4G的小区三和5G的小区四；或者，当小区一的DRX周期等于64ms时，第二候选小区集合包括4G的小区三和5G的小区四，或者包括4G的小区三和5G的小区一。
另外，UE还可保存第一候选小区集合或信号强度大于或等于第一阈值的所有小区。
S307：UE判断第二候选小区集合是否包含当前的服务小区；如果是，则执行S309；否则，执行S308。
S308：UE重选到第二候选小区集合中UE待机功耗最小的制式的小区中。换句话说，UE驻留至第二候选小区集合中UE待机功耗最小的制式的小区中。此时，该UE待机功耗最小的制式的小区为UE当前的服务小区。
在S308之后，UE可执行S310。
S309：UE判断第二候选小区集合是否仅包含当前的服务小区；如果是，则执行S312；否则，执行S310。
S310：UE检测第二候选小区集合中是否包含配置发送多次寻呼消息的小区。如果是，则执行S313；否则，执行S311。
其中，UE检测第二候选小区集合中是否包含配置发送多次寻呼消息的小区的方式可参考图2所示方法中的步骤A1，此处不再赘述。
S311：UE重新驻留至第二候选小区集合中的小区。
其中，该小区可为第二候选小区集合中的任一小区，也可以为第二候选小区集合中UE待机功耗最小的制式的小区，还可为第二候选小区集合中信号强度最大的小区，还可为第二候选小区集合中制式最高的小区。
S312：UE检测当前的服务小区是否为配置发送多次寻呼消息的小区；如果是，则执行S313。
其中，S312的具体内容可参考图2所示方法中的步骤A1，此处不再赘述。
可选的，UE可在驻留至当前的服务小区之后，即执行S312。
另外，如果在S312中，UE未检测到当前的服务小区为配置发送多次寻呼消息的小区，UE的RRC层可以周期性的检测当前的服务小区是否为配置发送多次寻呼消息的小区，即周期性的执行S312。例如，UE的RRC层可设置第二定时器，第二定时器的定时时间为第 二周期。在上一次执行完S312之后，若未检测到当前的服务小区为配置发送多次寻呼消息的小区，UE的RRC层可启动第二定时器；当第二定时器的定时时间到达时，UE可再次执行S312。
S313：UE的RRC层为UE的物理(physical，PHY)层配置用于检测寻呼消息的第一周期。其中，该第一周期可为DRX周期的倍数(例如，2*DRX周期)。UE的PHY层可使用第一周期检测寻呼消息。
S314：UE接收来自基站的用于指示系统消息更新的信息。
其中，S314为可选的步骤。
可选的，在接收到来自基站的用于指示系统消息更新的信息之后，UE执行S312。
可选的，在S301之后，UE可通过图4所示方法优化空闲态和连接态的操作。
下面参考S401-S403介绍UE进入静止模式之后在空闲态下的操作。
S401：UE仅测量服务小区的信号强度。
S401的具体内容可参考S207，重复之处不再赘述。
此外，UE还可使用第三周期检测在检测时长T中服务小区的信号强度。其中，第三周期为UE测量服务小区的信号强度的周期，该周期也可以称为测量停止间隔时长IntervalTimer。检测时长T和第三周期可预先存储在NV RAM中。
S402：UE确定在检测时长T中，服务小区的信号强度是否一直大于或等于第二阈值。
其中，UE可获取NV中存储的第二阈值。当在检测时长T中，使用第三周期测量的服务小区的信号强度均大于或等于第二阈值时，执行S403；否则，继续执行S401。
S403：UE可调整测量服务小区的信号强度的周期。具体的，UE可将测量服务小区的信号强度的周期从第三周期调整为第四周期。
其中，第四周期可大于第三周期。可选的，第四周期与第三周期的差值可为IntervalTimer的倍数。例如，第三周期为IntervalTimer，第四周期为2*IntervalTimer。这样，当UE的服务小区的信号强度持续大于第二阈值时，UE以IntervalTimer为单位增大测量服务小区的信号强度的周期；换句话说，UE以IntervalTimer为单位扩大停止测量服务小区的信号强度的时间间隔。
下面参考S404-S406介绍UE进入静止模式之后在连接态下的操作。
S404：UE接收来自基站的连接态的测量配置。
其中，测量配置可以但不限于包括：测量周期、测量窗长度、测量窗在测量周期内的偏移。
可选的，该测量配置可携带在现有的消息(例如，RRC连接重配置消息)中，也可以携带在新的消息中，本申请对此不做限定。
S405：UE仅测量服务小区的信号强度，且不上报测量报告。
其中，UE仅测量服务小区的信号强度的具体内容可参考S207，以及S401-S403，重复之处不再赘述。
可选的，当测量配置包括测量周期、测量窗长度、测量窗在测量周期内的偏移时，UE可在测量配置指示的测量窗内测量服务小区的信号强度。
S406：当确定该UE没有上行数据和下行数据时，UE可主动释放UE和服务小区之间 的RRC连接。
其中，S406的具体内容可参考步骤G1，重复之处不再赘述。
可选的，UE的底层(例如，物理层和/或数据链路层)可在确定该UE没有上行数据和下行数据时，通知UE的RRC层主动释放UE和服务小区之间的RRC连接。
另外，在释放RRC连接之后，UE可进入空闲态，并驻留至服务小区。此时，UE可执行S401-S403的操作。
应理解，S401-S403和S404-S406可互相结合，也可以分别单独作为一个方案。
另外，本申请对S401-S403和S404-S406执行顺序不限；本申请对S401-S406中任一步骤与S305-S314之间的任一步骤的执行顺序也不作限定。
可选的，在S301之后，UE可通过S315-S316所示方法执行退出静止模式之后的操作。
S315：UE的AP层在确定UE满足退出静止模式的条件之后，可通知UE的Modem退出静止模式。
其中，UE的AP层确定UE是否满足退出静止模式的条件的具体内容可参考步骤E1，此处不再赘述。
S316：UE退出静止模式后，可执行如下至少一项退出静止模式后的操作：
1、UE驻留至S306中保存的小区中制式最高的小区。具体内容可参考步骤E2，此处不再赘述。
2、UE按照当前服务小区的DRX周期为PHY层配置用于检测寻呼消息的周期；UE的PHY层使用当前服务小区的DRX周期接收寻呼消息。具体内容可参考步骤F2，此处不再赘述。
3、UE恢复测量服务小区和邻小区的信号强度。其中，邻小区可包括以下至少一项：同频邻小区、异频邻小区、异系统邻小区。
4、UE取消测量报告的抑制；换句话说，UE在处于连接态时可上报测量报告。
在本申请中，S315-S316可与S401-S403、S404-S406和S305-S314中的至少一项进行结合。在结合时，先执行S401-S403、S404-S406和S305-S314中的至少一项，再执行S315-S316。
另外，下列步骤可由UE的RRC层执行：S305-S307，S309-S310，S312，S402；下列步骤可由UE的RRC层和PHY层执行：S308，S311，S314，S316，S401，S403-S406。
通过该方法，UE在选择驻留小区时，不但考虑小区的信号强度，还考虑小区的寻呼检测周期。具体的，UE选择信号强度大于或等于第一阈值，且寻呼检测周期最大的小区来驻留；这样，UE至少可采用最大的寻呼检测周期来检测寻呼消息，从而可降低UE的待机功耗。
并且，在该方法中，当UE处于静止模式，且驻留至第二候选小区集合中配置发送多次寻呼消息的小区时，UE可拉长检测寻呼消息的周期，从而可进一步降低UE的功耗。
此外，在该方法中，在静止模式下，UE仅检测服务小区的信号强度，不检测邻小区的信号强度，从而可降低UE的功耗。
另外，通过该方法，当UE检测到服务小区的信号强度持续大于或等于第二阈值时，UE可采用更大的周期来检测服务小区的信号强度，拉长检测服务小区信号强度的时间间隔，从而可降低UE的功耗。
此外，通过该方法，UE可在发现没有上行数据和下行数据时，及时释放UE和服务小区之间的RRC连接，避免不必要的占用资源。
基于与图2至图4方法实施例相同的发明构思，本申请实施例通过图5提供了一种通信装置，可用于执行上述方法实施例中相关步骤的功能。所述功能可以通过硬件实现，也可以通过软件或者硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。该通信装置的结构如图5所示，包括通信单元501和处理单元502。所述通信装置500可以应用于图1所示的通信系统中的终端设备，并可以实现以上本申请实施例以及实例提供的通信方法。下面对所述通信装置500中的各个单元的功能进行介绍。
所述通信单元501用于接收和发送数据，可以通过收发器实现，例如，移动通信模块。其中，移动通信模块可以包括至少一个天线、至少一个滤波器，开关，功率放大器，低噪声放大器(low noise amplifier，LNA)等。所述AN设备可以通过所述移动通信模块与接入的终端设备进行通信。
所述处理单元502可用于支持所述通信装置500执行上述方法实施例中的处理动作。所述处理单元502可以是通过处理器实现。例如，所述处理器可以为中央处理单元(central processing unit，CPU)，还可以是其它通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现场可编程门阵列(field programmable gate array，FPGA)或者其它可编程逻辑器件、晶体管逻辑器件，硬件部件或者其任意组合。通用处理器可以是微处理器，也可以是任何常规的处理器。
在一种实施方式中，所述通信装置500应用于图2所示的本申请实施例中的第一终端设备，或者图3-图4任一项所示的本申请实施例中的UE。下面对该实施方式中的所述通信单元501和所述处理单元502的具体功能进行介绍。
通信单元501，用于当通信装置500进入静止模式时，接收来自至少一个小区的系统信息；其中，来自至少一个小区的系统信息中包含用于指示至少一个小区中的任一小区的寻呼检测周期的信息；
处理单元502，用于：测量至少一个小区的信号强度；根据至少一个小区的寻呼检测周期和信号强度，确定候选小区集合，其中，候选小区集合包括：至少一个小区中信号强度大于或等于第一阈值，且寻呼检测周期最大的小区；驻留至第一小区，其中，第一小区为候选小区集合中的小区。
可选的，处理单元502还用于：在驻留至第一小区后，检测驻留的第一小区是否为配置发送多次寻呼消息的小区；当第一小区未配置发送多次寻呼消息时，驻留至候选小区集合中的下一个小区并检测是否为配置发送多次寻呼消息的小区；驻留至目标小区，目标小区为候选小区集合中的配置发送多次寻呼消息的小区。
可选的，处理单元502具体用于：当在连续M个第一小区的寻呼检测周期中通过通信单元501接收到M个来自第一小区的寻呼消息，且接收到的每个寻呼消息中均包含第二终端设备的标识信息时，确定第一小区为配置发送多次寻呼消息的小区；当未在连续M个第一小区的寻呼检测周期中通过通信单元501接收到M个来自第一小区的寻呼消息，确定第一小区不是配置发送多次寻呼消息的小区；其中，M为大于或等于2的整数。
可选的，通信单元501还用于：在驻留至目标小区之后，根据第一周期接收来自目标小区的寻呼消息；其中，第一周期为目标小区的寻呼检测周期的N倍，N为大于或等于2 的整数。
可选的，处理单元502具体用于：当候选小区集合中未包含配置发送多次寻呼消息的小区时，重新驻留至第一小区。
可选的，处理单元502还用于：在驻留至目标小区之后，仅检测目标小区的信号强度。
可选的，处理单元502还用于：当通信装置500处于无线资源控制RRC连接态时，在检测目标小区的信号强度之后，阻止测量报告的上报。
可选的，处理单元502还用于：在驻留至第一小区之前，根据至少一个小区的信号强度，确定第一集合，其中，第一集合包括：至少一个小区中信号强度大于或等于第一阈值的小区；在驻留至第一小区之后，通信装置500退出静止模式时，驻留至第一集合中制式最高的第四小区。
可选的，通信单元501还用于：在驻留至目标小区之后，通信装置500退出静止模式时，根据目标小区的寻呼检测周期，接收来自目标小区的寻呼消息。
可选的，处理单元502还用于：在驻留至目标小区之后，当通信装置500处于RRC连接态，且检测到通信装置500没有上行数据和下行数据时，释放通信装置500与目标小区之间的RRC连接。
需要说明的是，本申请以上实施例中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)或处理器(processor)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
基于相同的技术构思，本申请实施例通过图6所示提供了一种通信装置，可用于执行上述方法实施例中相关的步骤。所述通信装置可以应用于图1所示的通信系统中的终端设备，可以实现以上本申请实施例以及实例提供的通信方法，具有图5所示的通信装置的功能。参阅图6所示，所述通信装置600包括：通信模块601、处理器602以及存储器603。其中，所述通信模块601、所述处理器602以及所述存储器603之间相互连接。
可选的，所述通信模块601、所述处理器602以及所述存储器603之间通过总线604相互连接。所述总线604可以是外设部件互连标准(peripheral component interconnect，PCI)总线或扩展工业标准结构(extended industry standard architecture，EISA)总线等。所述总线可以分为地址总线、数据总线、控制总线等。为便于表示，图6中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
所述通信模块601，用于接收和发送数据，实现与其他设备之间的通信交互。例如， 所述通信模块601可以通过物理接口、通信模块、通信接口、输入输出接口实现。
所述处理器602可用于支持所述通信装置600执行上述方法实施例中的处理动作。当所述通信装置600用于实现上述方法实施例时，处理器602还可用于实现上述处理单元502的功能。所述处理器602可以是CPU，还可以是其它通用处理器、DSP、ASIC、FPGA或者其它可编程逻辑器件、晶体管逻辑器件，硬件部件或者其任意组合。通用处理器可以是微处理器，也可以是任何常规的处理器。
在一种实施方式中，所述通信装置600应用于图2所示的本申请实施例中的第一终端设备，或者图3-图4任一项所示的本申请实施例中的UE。所述处理器602具体用于：
当第一终端设备进入静止模式时，通过所述通信模块601接收来自至少一个小区的系统信息；其中，来自至少一个小区的系统信息中包含用于指示至少一个小区中的任一小区的寻呼检测周期的信息；测量至少一个小区的信号强度；根据至少一个小区的寻呼检测周期和信号强度，确定候选小区集合；其中，候选小区集合包括：至少一个小区中信号强度大于或等于第一阈值，且寻呼检测周期最大的小区；驻留至第一小区；其中，第一小区为候选小区集合中的小区。
所述处理器602的具体功能可以参考以上本申请实施例以及实例提供的通信方法中的描述，以及图5所示本申请实施例中对所述通信装置500的具体功能描述，此处不再赘述。
所述存储器603，用于存放程序指令和数据等。具体地，程序指令可以包括程序代码，该程序代码包括计算机操作指令。存储器603可能包含RAM，也可能还包括非易失性存储器(non-volatile memory)，例如至少一个磁盘存储器。处理器602执行存储器603所存放的程序指令，并使用所述存储器603中存储的数据，实现上述功能，从而实现上述本申请实施例提供的通信方法。
可以理解，本申请图6中的存储器603可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是ROM、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。易失性存储器可以是RAM，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)。应注意，本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
基于以上实施例，本申请实施例还提供了一种计算机程序，当所述计算机程序在计算机上运行时，使得所述计算机执行以上实施例提供的方法。
基于以上实施例，本申请实施例还提供了一种计算机可读存储介质，该计算机可读存储介质中存储有计算机程序，所述计算机程序被计算机执行时，使得计算机执行以上实施例提供的方法。
其中，存储介质可以是计算机能够存取的任何可用介质。以此为例但不限于：计算机可读介质可以包括RAM、ROM、EEPROM、CD-ROM或其他光盘存储、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码 并能够由计算机存取的任何其他介质。
基于以上实施例，本申请实施例还提供了一种芯片，所述芯片用于读取存储器中存储的计算机程序，实现以上实施例提供的方法。
基于以上实施例，本申请实施例提供了一种芯片系统，该芯片系统包括处理器，用于支持计算机装置实现以上实施例中各设备所涉及的功能。在一种可能的设计中，所述芯片系统还包括存储器，所述存储器用于保存该计算机装置必要的程序和数据。该芯片系统，可以由芯片构成，也可以包含芯片和其他分立器件。
在本申请的各个实施例中，如果没有特殊说明以及逻辑冲突，不同的实施例之间的术语和/或描述具有一致性、且可以相互引用，不同的实施例中的技术特征根据其内在的逻辑关系可以组合形成新的实施例。
本领域内的技术人员应明白，本申请的实施例可提供为方法、系统、或计算机程序产品。因此，本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本申请是参照根据本申请的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (24)

  1. 一种通信方法，应用于第一终端设备，其特征在于，包括：
    当所述第一终端设备进入静止模式时，接收来自至少一个小区的系统信息；其中，来自所述至少一个小区的系统信息中包含用于指示所述至少一个小区中的任一小区的寻呼检测周期的信息；
    测量所述至少一个小区的信号强度；
    根据所述至少一个小区的寻呼检测周期和信号强度，确定候选小区集合；其中，所述候选小区集合包括：所述至少一个小区中信号强度大于或等于第一阈值，且寻呼检测周期最大的小区；
    驻留至第一小区；其中，所述第一小区为所述候选小区集合中的小区。
  2. 如权利要求1所述的方法，其特征在于，驻留至第一小区后，所述方法还包括：
    检测驻留的所述第一小区是否为配置发送多次寻呼消息的小区；
    当所述第一小区未配置发送多次寻呼消息时，驻留至所述候选小区集合中的下一个小区并检测是否为配置发送多次寻呼消息的小区；
    驻留至目标小区，所述目标小区为所述候选小区集合中的配置发送多次寻呼消息的小区。
  3. 如权利要求2所述的方法，其特征在于，检测驻留的所述第一小区是否为配置发送多次寻呼消息的小区，包括：
    当在连续M个所述第一小区的寻呼检测周期中接收到M个来自所述第一小区的寻呼消息，且接收到的每个寻呼消息中均包含第二终端设备的标识信息时，确定所述第一小区为配置发送多次寻呼消息的小区；
    当未在连续M个所述第一小区的寻呼检测周期中接收到M个来自所述第一小区的寻呼消息，确定所述第一小区不是配置发送多次寻呼消息的小区；
    其中，M为大于或等于2的整数。
  4. 如权利要求2或3所述的方法，其特征在于，在驻留至目标小区之后，所述方法还包括：
    根据第一周期接收来自所述目标小区的寻呼消息；其中，所述第一周期为所述目标小区的寻呼检测周期的N倍，N为大于或等于2的整数。
  5. 如权利要求2或3所述的方法，其特征在于，驻留至所述候选小区集合中的下一个小区并检测是否为配置发送多次寻呼消息的小区，包括：
    当所述候选小区集合中未包含配置发送多次寻呼消息的小区时，重新驻留至所述第一小区。
  6. 如权利要求2至4任一项所述的方法，其特征在于，在驻留至目标小区之后，所述方法还包括：
    仅检测所述目标小区的信号强度。
  7. 如权利要求6所述的方法，其特征在于，当所述第一终端设备处于无线资源控制RRC连接态时，在检测所述目标小区的信号强度之后，所述方法还包括：
    阻止测量报告的上报。
  8. 如权利要求1至7任一项所述的方法，其特征在于，
    在驻留至第一小区之前，所述方法包括：
    根据所述至少一个小区的信号强度，确定第一集合；其中，所述第一集合包括：所述至少一个小区中信号强度大于或等于所述第一阈值的小区；
    在驻留至第一小区之后，所述方法还包括：
    所述第一终端设备退出静止模式时，驻留至所述第一集合中制式最高的第四小区。
  9. 如权利要求2至4任一项所述的方法，其特征在于，在驻留至目标小区之后，所述方法还包括：
    所述第一终端设备退出静止模式时，根据所述目标小区的寻呼检测周期，接收来自所述目标小区的寻呼消息。
  10. 如权利要求2至4任一项所述的方法，其特征在于，在驻留至目标小区之后，所述方法还包括：
    当所述第一终端设备处于RRC连接态，且检测到所述第一终端设备没有上行数据和下行数据时，释放所述第一终端设备与所述目标小区之间的RRC连接。
  11. 一种通信装置，其特征在于，包括：
    通信单元，用于当所述通信装置进入静止模式时，接收来自至少一个小区的系统信息；其中，来自所述至少一个小区的系统信息中包含用于指示所述至少一个小区中的任一小区的寻呼检测周期的信息；
    处理单元，用于：
    测量所述至少一个小区的信号强度；
    根据所述至少一个小区的寻呼检测周期和信号强度，确定候选小区集合；其中，所述候选小区集合包括：所述至少一个小区中信号强度大于或等于第一阈值，且寻呼检测周期最大的小区；
    驻留至第一小区；其中，所述第一小区为所述候选小区集合中的小区。
  12. 如权利要求11所述的装置，其特征在于，所述处理单元还用于：
    在驻留至第一小区后，检测驻留的所述第一小区是否为配置发送多次寻呼消息的小区；
    当所述第一小区未配置发送多次寻呼消息时，驻留至所述候选小区集合中的下一个小区并检测是否为配置发送多次寻呼消息的小区；
    驻留至目标小区，所述目标小区为所述候选小区集合中的配置发送多次寻呼消息的小区。
  13. 如权利要求12所述的装置，其特征在于，所述处理单元具体用于：
    当在连续M个所述第一小区的寻呼检测周期中通过所述通信单元接收到M个来自所述第一小区的寻呼消息，且接收到的每个寻呼消息中均包含第二终端设备的标识信息时，确定所述第一小区为配置发送多次寻呼消息的小区；
    当未在连续M个所述第一小区的寻呼检测周期中通过所述通信单元接收到M个来自所述第一小区的寻呼消息，确定所述第一小区不是配置发送多次寻呼消息的小区；
    其中，M为大于或等于2的整数。
  14. 如权利要求12或13所述的装置，其特征在于，所述通信单元还用于：在驻留至目标小区之后，根据第一周期接收来自所述目标小区的寻呼消息；其中，所述第一周期为所述目标小区的寻呼检测周期的N倍，N为大于或等于2的整数。
  15. 如权利要求12或13所述的装置，其特征在于，所述处理单元具体用于：当所述候选小区集合中未包含配置发送多次寻呼消息的小区时，重新驻留至所述第一小区。
  16. 如权利要求12至14任一项所述的装置，其特征在于，所述处理单元还用于：在驻留至目标小区之后，仅检测所述目标小区的信号强度。
  17. 如权利要求16所述的装置，其特征在于，所述处理单元还用于：当所述通信装置处于无线资源控制RRC连接态时，在检测所述目标小区的信号强度之后，阻止测量报告的上报。
  18. 如权利要求11至17任一项所述的装置，其特征在于，所述处理单元还用于：
    在驻留至第一小区之前，根据所述至少一个小区的信号强度，确定第一集合；其中，所述第一集合包括：所述至少一个小区中信号强度大于或等于所述第一阈值的小区；
    在驻留至第一小区之后，所述通信装置退出静止模式时，驻留至所述第一集合中制式最高的第四小区。
  19. 如权利要求12至14任一项所述的装置，其特征在于，所述通信单元还用于：
    在驻留至目标小区之后，所述通信装置退出静止模式时，根据所述目标小区的寻呼检测周期，接收来自所述目标小区的寻呼消息。
  20. 如权利要求12至14任一项所述的装置，其特征在于，所述处理单元还用于：
    在驻留至目标小区之后，当所述通信装置处于RRC连接态，且检测到所述通信装置没有上行数据和下行数据时，释放所述通信装置与所述目标小区之间的RRC连接。
  21. 一种通信装置，其特征在于，包括处理器，所述处理器和存储器耦合，所述存储器中存储有计算机程序；所述处理器用于调用所述存储器中的计算机程序，使得所述通信装置执行如权利要求1至10任一项所述的方法。
  22. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质中存储有计算机程序，当所述计算机程序在计算机上运行时，使得所述计算机执行权利要求1-10任一项所述的方法。
  23. 一种芯片，其特征在于，所述芯片与存储器耦合，所述芯片读取所述存储器中存储的计算机程序，执行权利要求1-10任一项所述的方法。
  24. 一种通信装置，其特征在于，包括：
    处理电路和接口电路；其中，
    所述接口电路用于与所述通信装置外部的存储器耦合，并为所述处理电路访问所述存储器提供通信接口；
    所述处理电路用于执行所述存储器中的程序指令，以实现如权利要求1至10中的任一所述方法。
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