WO2022237565A1 - 用于低功率模式传输的方法和装置 - Google Patents

用于低功率模式传输的方法和装置 Download PDF

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Publication number
WO2022237565A1
WO2022237565A1 PCT/CN2022/090002 CN2022090002W WO2022237565A1 WO 2022237565 A1 WO2022237565 A1 WO 2022237565A1 CN 2022090002 W CN2022090002 W CN 2022090002W WO 2022237565 A1 WO2022237565 A1 WO 2022237565A1
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Prior art keywords
communication device
psm
duration
wake
indication information
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PCT/CN2022/090002
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English (en)
French (fr)
Inventor
乔云飞
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP22806534.8A priority Critical patent/EP4336909A1/en
Publication of WO2022237565A1 publication Critical patent/WO2022237565A1/zh
Priority to US18/505,389 priority patent/US20240080764A1/en

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    • 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
    • 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
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
    • 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
    • H04W52/0235—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a power saving command
    • 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
    • H04W52/0245—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal according to signal strength
    • 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
    • H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
    • H04W52/0274—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof
    • H04W52/028—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof switching on or off only a part of the equipment circuit blocks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1851—Systems using a satellite or space-based relay
    • H04B7/18513—Transmission in a satellite or space-based system
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present application relates to the field of communication technologies, and more specifically, to a method and device for low power mode (power saving mode, PSM) transmission.
  • PSM power saving mode
  • PSM is a new low-power mode introduced in the Internet of Things (IoT) scenario.
  • the communication device may request PSM information from the network, and the communication device may enter the PSM mode after obtaining the PSM information.
  • the communication device is unreachable, that is, the network cannot contact the communication device, so that the communication device enters a long-term deep sleep state to achieve the purpose of saving power consumption.
  • the communication device can exit the PSM mode and switch to the connected state.
  • the communication device due to the high-speed movement of the satellite base station, when the communication device exits the PSM mode, there may not be a satellite base station in the cell where the communication device is currently located to communicate with the communication device, that is to say, the communication device is in an unsuitable location. The time to exit the PSM mode will cause power waste.
  • the present application provides a method and device for PSM transmission in a low power mode, which is beneficial for a communication device to wake up from the PSM mode at an appropriate time, thereby reducing power waste.
  • a method for PSM transmission in a low power mode including: a first communication device sends a first request message, and the first request message is used to request to enter the PSM mode; the first communication device receives the first A response message, the first response message includes first indication information and second indication information, the first indication information is used to indicate that the first communication device enters the PSM mode, and the second indication information is used to indicate that the first communication device In the X wake-up opportunity time periods in the PSM mode, X is greater than or equal to 0; the first communication device enters the PSM mode based on the first response message.
  • the first communication device when the first communication device receives the first indication information for instructing to enter the PSM mode, it also receives X wake-up opportunity times for indicating that the first communication device is in the PSM mode During the wake-up opportunity period, the first communication device can temporarily wake up to process uplink and downlink service data, so that the first communication device can wake up at an appropriate time period, which is beneficial to reduce the power consumption of the first communication device.
  • the second indication information when X is greater than 0, includes the start time point and end time of each wake-up opportunity time period in the X wake-up opportunity time periods point, or, the start time point and duration of each wake opportunity period.
  • the first communication device may determine the appropriate wake-up opportunity time period through the indicated start time point and end time point, or start time point and duration of each wake-up opportunity time period, indicating that It is simple and intuitive, and is convenient for the first communication device to process.
  • the first communication device after the first communication device enters the PSM mode based on the first response message, if the first communication device has service data to be sent, the first communication device A communication device sends the service data in the first wake-up opportunity time period among the X wake-up opportunity time periods.
  • the first communication device may select the first wake-up opportunity time period to send service data in the X wake-up opportunity time periods, so that It is conducive to the normal transmission of business data and reduces power loss.
  • the first response message is an attach accept message or a tracking area update accept message.
  • the second indication information used to indicate X wake-up opportunity time periods may be transmitted through an attach accept message or a tracking area update accept message, which is beneficial to reduce signaling overhead.
  • the first communication device receives information of a first duration, and the first duration is used to indicate the delay time of the PSM mode; the first communication device receives information based on the first duration
  • a response message to enter the PSM mode includes: the first communication device enters the PSM mode after the first time period after receiving the first response message.
  • the first communication device there is a delay time before the first communication device enters the PSM mode, that is, the first duration. After the first duration, the first communication device enters the PSM mode. mode to receive paging messages.
  • the first communication device receives information of a second duration, and the second duration is used to indicate the duration of the PSM mode; the first communication device enters the PSM After the PSM mode, exit the PSM mode after the second duration.
  • the first communication device may exit the PSM mode after the second duration expires, so as to prevent the first communication device from not updating the location information in time due to being in the PSM mode for a long time.
  • a method for PSM transmission in a low power mode including: a second communication device receives a first request message, and the first request message is used to request to enter the PSM mode; the second communication device sends a first A response message, the first response message includes first indication information and second indication information, the first indication information is used to instruct the first communication device to enter the PSM mode, and the second indication information is used to indicate that the first communication device is in the PSM mode X wake-up opportunity time periods in the PSM mode, where X is greater than or equal to 0.
  • the second indication information when X is greater than 0, includes the start time point and the end point of each wake-up opportunity time period in the X wake-up opportunity time periods The time point, or, the start time point and duration of each wake opportunity period.
  • the first response message is an attach accept message or a tracking area update accept message.
  • the second communication device sends information of a first duration, where the first duration is used to indicate a delay time of the PSM mode.
  • the second communication device sends information of a second duration, where the second duration is used to indicate the duration of the PSM mode.
  • a method for monitoring a paging message including: a first communication device sends a second request message, and the second request message is used to request a monitoring opportunity for a paging message; the first communication device receives The second response message, the second response message includes third indication information or fourth indication information, the third indication information is used to instruct the first communication device to monitor the paging cycle of the paging message, and the fourth indication information is used for Instructing the first communication device to stop monitoring the time period of the paging message; the first communication device monitors the paging message based on the second response message.
  • the third indication information or the fourth indication information may be used to instruct the first communication device to monitor the paging message or to stop monitoring the timing of the paging message, which can prevent the first communication device from Monitoring the paging message is beneficial to reduce power consumption waste.
  • the fourth indication information includes the start time point and the end time point of the time period for stopping listening to paging messages, or the time for stopping listening to paging messages The start point and duration of the segment.
  • the monitoring of the paging message by the first communication device based on the second response message includes: the first communication device, based on the third indication information, in at least one paging message Determine a target paging cycle for monitoring paging messages in the paging cycle; the first communication device monitors paging messages in the target paging cycle.
  • the first communication device has at least one paging cycle, but it may not be able to listen to paging messages in some paging cycles, so the third indication information can indicate that at least one paging cycle can be listened to to the target paging cycle of the paging message, which is beneficial to reduce power consumption.
  • the first communication device monitoring the paging message based on the second response message includes: the first communication device determines to stop monitoring the paging message based on the fourth indication information A time period for the message; the first communication device continues to monitor the paging message after the time period for stopping monitoring the paging message ends.
  • the fourth indication information may be used to indicate the time period for stopping listening to paging messages.
  • the first communication device cannot listen to paging messages, so the first communication The device does not need to monitor the paging message during the time period during which it stops monitoring the paging message, which is beneficial to reduce power consumption.
  • a method for monitoring a paging message including: a second communication device receives a second request message, and the second request message is used to request a monitoring opportunity of a paging message; the second communication device sends The second response message, the second response message includes third indication information or fourth indication information, the third indication information is used to instruct the first communication device to monitor the paging cycle of the paging message, and the fourth indication information is used for Instructing the first telecommunications device to stop listening for a time period for paging messages.
  • the fourth indication information includes the start time point and end time point of the time period for stopping listening to paging messages, or the start time point and duration .
  • the second communication device receives a paging message, where the paging message includes a time period for instructing the second communication device to stop sending the paging message; the second The communication device stops sending the paging message during the time period of stopping sending the paging message.
  • an apparatus for PSM transmission in a low power mode including: performing the method in any possible implementation manner in any of the foregoing aspects.
  • the apparatus includes a module for executing the method in any possible implementation manner in any of the foregoing aspects.
  • the device may include modules corresponding to one-to-one execution of the methods/operations/steps/actions described in the above aspects.
  • the modules may be hardware circuits, software, or a combination of hardware circuits and software. accomplish.
  • the device is a communication chip
  • the communication chip may include an input circuit or interface for sending information or data, and an output circuit or interface for receiving information or data.
  • the apparatus is a communications device, which may include a transmitter for sending information or data, and a receiver for receiving information or data.
  • the device is used to execute the method in any of the above-mentioned aspects or any possible implementation of the various aspects, and the device may be configured in the above-mentioned first communication device or the second communication device, or the device itself is The above-mentioned first communication device or the second communication device.
  • another device for PSM transmission in a low power mode including a processor and a memory, the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the The device executes the method in any possible implementation manner in any of the foregoing aspects.
  • processors there are one or more processors, and one or more memories.
  • the memory may be integrated with the processor, or the memory may be set separately from the processor.
  • the communication device further includes a transmitter (transmitter) and a receiver (receiver).
  • the transmitter and receiver can be set separately or integrated together, called a transceiver (transceiver).
  • a communication system including: a device for implementing the above first aspect or any possible implementation method of the first aspect, and an apparatus for implementing the above second aspect or any one of the second aspects A device for a possible realization method; or, a device for realizing the above-mentioned third aspect or any possible realization method of the third aspect, and for realizing the above-mentioned fourth aspect or any possible realization of the fourth aspect means of the method.
  • the communication system may further include other devices that interact with the first communication device and/or the second communication device in the solutions provided in the embodiments of the present application.
  • a computer program product includes: a computer program (also referred to as code, or an instruction), which, when the computer program is executed, causes the computer to perform any of the above-mentioned aspects.
  • a computer program also referred to as code, or an instruction
  • a computer-readable medium stores a computer program (also referred to as code, or instruction) which, when run on a computer, causes the computer to perform any of the above-mentioned aspects.
  • a computer program also referred to as code, or instruction
  • a communication device including a communication interface and a logic circuit, the communication interface is used to send a first request message and/or receive a first response message, and the logic circuit is used to enter the PSM according to the first response message Execute the method in any possible implementation manner of the foregoing first aspect.
  • another communication device including a communication interface and a logic circuit, the communication interface is used to receive a first request message and/or send a first response message, and the logic circuit is used to Transmitting the PSM executes the method in any possible implementation manner of the second aspect above.
  • yet another communication device including a communication interface and a logic circuit
  • the communication interface is used to send a second request message and/or receive a second response message
  • the logic circuit is used to Listening to the paging message executes the method in any possible implementation manner of the third aspect above.
  • another communication device including a communication interface and a logic circuit
  • the communication interface is used to receive a second request message and/or send a second response message
  • the logic circuit is used to The monitoring timing for transmitting the paging message executes the method in any possible implementation manner of the fourth aspect above.
  • FIG. 1 is a schematic diagram of a system frame
  • FIG. 2 is a schematic diagram of power consumption of a UE in different states
  • FIG. 3 is a schematic diagram of a system architecture for PSM transmission provided by an embodiment of the present application.
  • FIG. 4 is a schematic diagram of another system architecture for PSM transmission provided by an embodiment of the present application.
  • FIG. 5 is a schematic flowchart of a method for PSM transmission provided by an embodiment of the present application.
  • FIG. 6 is a schematic diagram of power loss in a different state provided by an embodiment of the present application.
  • FIG. 7 is a schematic diagram of a system frame provided by an embodiment of the present application.
  • FIG. 8 is a schematic block diagram of a device for PSM transmission provided by an embodiment of the present application.
  • FIG. 9 is a schematic block diagram of another device for PSM transmission provided by an embodiment of the present application.
  • Fig. 10 is a schematic block diagram of another apparatus for PSM transmission provided by an embodiment of the present application.
  • Non-terrestrial networks The rapid development of information technology has put forward more urgent requirements for communication efficiency, mobility, and diversity. Since the traditional terrestrial network cannot provide seamless coverage for user equipment (UE), especially in seas, deserts, air and other places where base stations cannot be deployed, NTN is introduced into the fifth generation mobile communication network (5th generation mobile networks, In 5G), NTN provides seamless coverage for UEs by deploying base stations or some base station functions on high-altitude platforms or satellites, and high-altitude platforms or satellites are less affected by natural disasters, which can improve the reliability of 5G systems.
  • 5G fifth generation mobile communication network
  • Satellite communication In some important fields, such as space communication, aviation communication, maritime communication, military communication, etc., satellites play an irreplaceable role. Satellite communication has the characteristics of long communication distance, large coverage area, and flexible networking. It can provide services for both fixed terminals and various mobile terminals.
  • Radio resource control (radio resource control, RRC) state includes idle state (RRC_IDLE), inactive state (RRC_INACTIVE) and connected state (RRC_CONNECTED).
  • the UE When the UE is in the connected state (RRC_CONNECTED), it can send and receive data from the network, monitor the control signaling indicating the control authorization on the shared channel, and can report the channel quality to the network.
  • RRC_CONNECTED When the UE is in the connected state (RRC_CONNECTED), it can send and receive data from the network, monitor the control signaling indicating the control authorization on the shared channel, and can report the channel quality to the network.
  • Paging messages mainly include system message change notifications or natural disaster short message alerts.
  • DRX Discontinuous reception
  • 3GPP 3rd generation partnership project
  • the DRX mechanism to reduce the power consumption of the UE.
  • RRC_IDLE an idle state
  • RRC_INACTIVE an inactive state
  • the UE can periodically receive paging messages according to DRX information configured by the network.
  • the specific time for the UE to receive the paging message is determined by the paging frame (paging frame, PF) and the paging occasion (paging occasion, PO).
  • PF indicates a frame for sending a paging message, that is, a UE in an idle state (RRC_IDLE) or an inactive state (RRC_INACTIVE) will only try to receive a paging message in the PF.
  • PO indicates the opportunity to try to receive a paging message in a PF, because the paging message is the downlink control information (DCI) scrambled with the paging-radio network temporary identity (P-RNTI) ), so one PO can actually correspond to S detection opportunities of DCI scrambled by P-RNTI, where S can be obtained through system information.
  • DCI downlink control information
  • P-RNTI paging-radio network temporary identity
  • FIG. 1 is a schematic diagram of a system frame, as shown in Figure 1, a paging cycle (paging cycle) includes 16 system frames, and the system frame whose system frame number (system frame number, SFN) is 1 is a paging frame PF, the paging frame PF includes 10 subframes with identifiers from 0 to 9, and the paging occasion PO may be located in the subframe with the identifier 9.
  • the UE can receive a paging message in a PF, and each PF can correspond to multiple POs, but the network does not send a paging message to the UE on every PO.
  • NB-IoT narrowband internet of things
  • the PF is located in a system frame satisfying the following formula:
  • UE_ID is an identifier of UE, which can be determined based on international mobile subscriber identity (IMSI). Exemplarily, UE_ID can be calculated by IMSI mod 4096.
  • IMSI international mobile subscriber identity
  • the position of PO can be determined based on the following formula:
  • I_s floor(UE_ID/N)mod(Ns)
  • floor( ⁇ ) represents a round-down operation
  • Ns represents the number of POs included in each PF. Based on the calculated I_s index, the PO location can be queried through Table 1.
  • Ns can be 1, 2 or 4
  • I_s can be 0, 1, 2 or 3
  • N/A indicates that there is no PO position.
  • PSM is a new low-power mode introduced in the NB-IoT scenario. It belongs to the function of the non-access stratum (NAS) and can be initiated by the UE. In PSM mode, the UE can enter a long-term deep sleep mode without periodically listening to paging messages. When the PSM is activated, the network cannot contact the UE.
  • NAS non-access stratum
  • Fig. 2 is a schematic diagram of power consumption of a UE in different states.
  • the abscissa in FIG. 2 represents time, and the state of the UE changes as time changes, and the ordinate represents power consumption, and the power consumption is different when the UE is in different states.
  • the UE is initially in the connected state (RRC_CONNECTED).
  • the UE can process uplink and downlink business data.
  • the RRC connection will be released and enter the idle state (RRC_IDLE).
  • the idle state corresponds to Multiple DRX cycles, in each DRX cycle, the UE can monitor the paging message, that is to say, the UE can periodically monitor the paging message in the idle state.
  • the idle state corresponds to a timer.
  • the timer can be a T3324 timer (0-255 seconds in duration).
  • the T3324 timer expires, the UE can enter the PSM mode from the idle state. Therefore, the The T3324 timer is called the activation timer of the PSM mode, or the duration of the T3324 timer can be regarded as the delay time for the UE to enter the PSM mode from the idle state.
  • the UE may exit the PSM mode after the timer corresponding to the PSM mode expires.
  • the timer corresponding to the PSM mode may be a T3412 timer, and the duration of the T3412 timer may be 6 minutes. 12 minutes or other duration, which is not limited in this embodiment of the present application.
  • the T3412 timer can also be called the tracking area updating (TAU) periodic request timer.
  • TAU tracking area updating
  • the UE may actively exit the PSM mode when there is service data to be processed, so as to enter a connected state to process service data.
  • the UE exits the PSM mode based on any of the above two possible implementation methods considering that the satellite platform is moving at a high speed in the NTN scenario, it is likely that the serving satellite base station of the cell where the UE is located will move in the future Other cells, but other satellite base stations in the satellite topology have not yet moved to the cell where the UE is located, resulting in no satellite base station coverage in the cell where the UE is located. In this case, the UE exits the PSM mode UE, and after entering the connection state, it cannot communicate with the satellite base station, that is to say, the UE exits the PSM mode at an incorrect time, which will cause waste of power consumption.
  • the embodiment of the present application provides a method for PSM transmission in an NTN scenario.
  • the satellite base station transmits PSM, it can allocate a wake-up opportunity time period in PSM mode to the UE.
  • the UE may temporarily wake up during the wake-up opportunity time period, and process service data during the wake-up opportunity time period. Since there is a satellite base station communicating with the UE in the wake-up opportunity time period, the UE can wake up in an appropriate time period, which is beneficial to reduce waste of power consumption.
  • the embodiments of the present application can be applied to multiple different scenarios, for example, data transmission between a terminal device and a network device, data transmission between a terminal device and a terminal device, and data transmission between a network device and a network device , this embodiment of the present application does not limit this, and the following describes the embodiment of the present application according to the first communication device and the second communication device.
  • At least one means one or more, and “multiple” means two or more.
  • “And/or” describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the contextual objects are an “or” relationship.
  • “At least one of the following” or similar expressions refer to any combination of these items, including any combination of single or plural items.
  • At least one (one) of a, b and c may represent: a, or b, or c, or a and b, or a and c, or b and c, or a, b and c, wherein a, b, c can be single or multiple.
  • FIG. 3 is a schematic diagram of a system architecture 300 for PSM transmission provided by an embodiment of the present application.
  • the system architecture 300 includes a first communication device 301 , a second communication device 302 and a core network 303 .
  • the second communication device 302 may be deployed on a satellite to communicate with the first communication device 301, and the second communication device 302 is connected to the core network 303 on the ground through a wireless link.
  • the first communication means may refer to a user equipment, an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user device.
  • the first communication device may also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a Handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, communication devices in 5G networks or public land mobile networks (PLMN) that will evolve in the future
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • Handheld devices with wireless communication functions computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, communication devices in 5G networks or public land mobile networks (PLMN) that will evolve in the future
  • PLMN public land mobile networks
  • the first communication device may also be a wearable device.
  • Wearable devices can also be called wearable smart devices, which is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not only a hardware device, but also achieve powerful functions through software support, data interaction, and cloud interaction.
  • Generalized wearable smart devices include full-featured, large-sized, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, etc., and only focus on a certain type of application functions, and need to cooperate with other devices such as smart phones Use, such as various smart bracelets and smart jewelry for physical sign monitoring.
  • the first communication device can also be a terminal device in the IoT system.
  • IoT is an important part of the development of information technology in the future. Its main technical feature is to connect items to the network through communication technology, so as to realize An intelligent network that interconnects man-machines and things.
  • the IoT technology can achieve massive connections, deep coverage, and terminal power saving through, for example, narrowband NB-IoT technology.
  • the first communication apparatus may also be a terminal device using a device-to-device (device-to-device, D2D) communication technology.
  • D2D technology refers to a communication method that directly communicates between two peer-to-peer terminal devices.
  • each terminal device node can send and receive signals, and has automatic routing. (Forward message) function.
  • the second communication device can be a base station (base transceiver station, BTS) in a global system for mobile communications (GSM) system or a code division multiple access (code division multiple access, CDMA), or a wideband code division multiple access (CDMA) system.
  • BTS base transceiver station
  • GSM global system for mobile communications
  • CDMA code division multiple access
  • CDMA wideband code division multiple access
  • the base station in the wideband code division multiple access (WCDMA) system, or the IoT base station in the IoT system or the NB-IoT in the narrowband internet of things (NB-IoT) system
  • the base station may also be an evolved base station (evolved NodeB, eNB or eNodeB) in the LTE system, or a wireless controller in a cloud radio access network (cloud radio access network, CRAN) scenario, or the second communication device It can be a relay station, an access point, a vehicle-mounted device, a wearable device, a communication device in a 5G network or a communication device in a future evolved PLMN network, etc., which is not limited in this embodiment of the application.
  • the second communication apparatus in this embodiment of the present application may be a device in a wireless network, for example, a radio access network (radio access network, RAN) node that connects a terminal to the wireless network.
  • RAN nodes are: base station, next-generation base station gNB, transmission reception point (transmission reception point, TRP), evolved node B (evolved Node B, eNB), home base station, baseband unit (baseband unit, BBU) , or the access point (access point, AP) in the WiFi system, etc.
  • the second communication device may include a centralized unit (centralized unit, CU) node, or a distributed unit (distributed unit, DU) node, or a RAN device including a CU node and a DU node.
  • a centralized unit centralized unit, CU
  • DU distributed unit
  • RAN device including a CU node and a DU node.
  • FIG. 4 is a schematic diagram of another system architecture 400 for PSM transmission provided by an embodiment of the present application.
  • the system architecture 400 is a more specific description of the system architecture 300.
  • the first communication device 301 is used as a terminal device
  • the second communication device 302 is a 5G satellite base station
  • the core network 303 is a 5G core network.
  • Architecture 400 is described.
  • the system architecture 400 includes two terminal devices 401 , two 5G satellite base stations 402 , a ground station 403 and a 5G core network 404 .
  • the 5G core network 404 includes a 5G control plane 405 and a 5G data plane 406 .
  • the terminal device 401 can be a device such as a mobile phone and a PAD supporting 5G new air interface, and the terminal device 401 can access the satellite network through the air interface and initiate services such as calling and surfing the Internet.
  • the 5G satellite base station 402 mainly provides wireless access services, which can schedule wireless resources for connected terminal devices and provide reliable wireless transmission protocols and data encryption protocols.
  • the ground station 403 is mainly responsible for forwarding signaling and service data between the 5G satellite base station 402 and the 5G core network 404 .
  • the 5G core network 404 is mainly responsible for services such as user access control, mobility management, session management, user security authentication, and billing.
  • the 5G core network 404 is composed of multiple functional units, which can be divided into two functional entities, the 5G control plane 405 and the 5G data plane 406 .
  • the 5G control plane 405 includes a 5G access and mobility management function (AMF) 407 and a 5G session management function (SMF) 408.
  • AMF 5G access and mobility management function
  • SMF 5G session management function
  • 5G AMF407 is responsible for user access management, security authentication and mobility management.
  • the 5G SMF 408 is responsible for interacting with the separate 5G data plane 406, creating, updating and deleting protocol data unit (protocol data unit, PDU) sessions, and managing the session environment with the PDU.
  • PDU protocol data unit
  • the 5G data plane 406 includes a 5G user plane function (UPF) 409 and a data network 410 .
  • the 5G UPF 409 is responsible for interacting with the data network 410, managing functions such as user plane data transmission, traffic statistics, and security eavesdropping.
  • the data network 410 can provide massive and diverse data for the 5G UPD 409.
  • the 5G NR represents a wireless link between a terminal device 401 and a 5G satellite base station 402 .
  • the Xn interface represents an interface between two 5G satellite base stations 402, and is mainly used for signaling interaction such as handover.
  • the NG interface represents the interface between the 5G satellite base station 402 and the 5G core network 404, and is mainly used for exchanging NAS signaling of the 5G core network 404 and user service data.
  • the 5G satellite base station 402 can transmit downlink data to the terminal device 401, wherein the data is encoded by channel coding, and the channel-coded data is transmitted to the terminal device 401 after constellation modulation.
  • the terminal device 401 transmits uplink data to the 5G satellite base station 402.
  • the uplink data may also be encoded by channel coding, and the encoded data is transmitted to the 5G satellite base station 402 after constellation modulation.
  • FIG. 5 is a schematic flowchart of a method 500 for PSM transmission provided by an embodiment of the present application.
  • Method 500 includes the following steps:
  • the first communication device sends a first request message, where the first request message is used to request to enter the PSM mode.
  • the second communication device receives the first request message.
  • the second communication device sends a first response message, and correspondingly, the first communication device receives the first response message.
  • the first response message includes first indication information and second indication information, the first indication information is used to indicate that the first communication device enters the PSM mode, and the second indication information is used to indicate that the first communication device enters the PSM mode X wake-up opportunity periods in the pattern, where X is greater than or equal to 0.
  • the first communication device enters the PSM mode based on the first response message.
  • the first communication device may request the second communication device to enter the PSM mode, and if the second communication device allows the first communication device to enter the PSM mode, the second communication device may instruct the first communication device through the first indication information.
  • the communication device enters the PSM mode, and indicates X wakeup opportunity time periods (wakeup occasion window) in which the first communication device can perform data transmission in the PSM mode through the second indication information, and X is greater than or equal to 0.
  • the X wake-up opportunity time periods can be determined according to the prediction of the constellation topology. Based on the constellation topology, the time when the satellite base station covers the first communication device can be predicted, so that after the first communication base station receives the X wake-up opportunity time periods, it can Whether to wake up from the PSM mode is determined according to the X wake-up opportunity time periods, that is to say, the first communication device can wake up from the PSM mode at an appropriate time point, which is beneficial to reduce power consumption waste.
  • the second indication information when X is greater than 0, includes the start time point and the end time point of each wake-up opportunity time period in the X wake-up opportunity time periods, or, each wake-up The start point and duration of the opportunity period.
  • X when X is greater than 0, it means that there is at least one wake-up opportunity time period in which the first communication device can wake up in the PSM mode.
  • X when X is equal to 0, it means that based on the prediction of the constellation topology, there is no time period during which the first communication device can wake up during the duration of the PSM mode, and the first communication device needs to continue to maintain the PSM mode to save power consumption.
  • the second indication information may include different forms of the wake-up opportunity time period.
  • the second communication device may use the second indication information to indicate the start time point and end time point of each wake-up opportunity time period, or indicate the start time point and duration of each wake-up opportunity time period.
  • the second communication device may carry the information of the wake-up opportunity time period in the form of a table, the format of which is shown in Table 2 or Table 3.
  • the awakening opportunity information element identifier (information element identifier, IEI) is used to indicate the specific meaning of this field.
  • Table 2 and Table 3 show the possible bearer form of one of the X awakening opportunity time periods.
  • the X wake-up opportunity time periods may also be shown in the same table, or the X wake-up opportunity time periods may be grouped and shown in different tables, which is not limited in this embodiment of the present application.
  • the method 500 further includes: if the first communication device has service data to be sent, the first wake-up opportunity time of the first communication device in the X wake-up opportunity time periods segment to send the business data.
  • the first communication device may select the first wake-up opportunity time period among the X wake-up opportunity time periods to transmit data, and in the first wake-up opportunity time period After the end, the first telecommunications device may continue to enter the PSM mode.
  • the first wake-up opportunity time period may be any one of the X wake-up opportunity time periods in the PSM mode, which is not limited in this embodiment of the present application.
  • the first wake-up opportunity time period must be after service data transmission requirements or TAU update requirements (or other wake-up requirements) are generated. Therefore, strictly speaking, the first awakening opportunity time period can be any one of the last X0 awakening opportunity time periods among the X awakening opportunity time periods in the PSM mode, and the X0 awakening opportunity time periods The segment is after generating a business data transmission requirement or a TAU update requirement (or other requirements that require waking up).
  • the present application still uses X as an example for illustration.
  • the first response message is an attach accept message or a tracking area update accept message.
  • the first communication device may request the second communication device to enter the PSM mode through an attach request message or a tracking area update request message during an attach process or a tracking area update TAU process.
  • the second telecommunications device may send an attach accept message or a tracking area update accept message to the first telecommunications device to instruct the first telecommunications device to enter the PSM mode, and to indicate the wake-up opportunity period of the first telecommunications device in the PSM mode.
  • the method 500 further includes: the first communication device receives information of a first duration, where the first duration is used to indicate a delay time of the PSM mode.
  • S503 includes: the first communication device enters the PSM mode after the first time period elapses after receiving the first response message.
  • the first duration is used to indicate the delay time of the PSM mode, that is, the duration from the idle state of the first communication device until entering the PSM mode.
  • the first duration may be the duration of the T3324 timer.
  • the T3324 timer may be regarded as an activation timer of the PSM mode. After the T3324 timer expires, the first communication device may enter the PSM mode.
  • the method 500 further includes: the first communication device receives information of a second duration, and the second duration is used to indicate the duration of the PSM mode; after the first communication device enters the PSM mode, After the second duration, exit the PSM mode.
  • the second duration is used to indicate the duration of the PSM mode, that is, the duration from the idle state of the first communication device until exiting the PSM mode.
  • the second duration may be the duration of the T3412 timer, and after the T3412 timer expires, the first communication device may exit the PSM mode.
  • the first communication device still does not exit the PSM mode until the second time period ends.
  • the PSM mode if there is a wake-up opportunity time period in the PSM mode, but there is no business data to be processed, and the second time period has not ended, the first communication device still does not exit the PSM mode until the second time period ends. The PSM mode.
  • Fig. 6 is a schematic diagram of power loss in a different state provided by the embodiment of the present application. Compared with FIG. 1 , there are X wake-up opportunity time periods within the duration of the PSM mode in FIG. 6 , and X is greater than or equal to 0.
  • the first communication device may enter an idle state after processing the data.
  • the idle state corresponds to the T3324 timer.
  • the first communication device may enter the PSM mode.
  • the first communication device may select one wake-up opportunity time period in the X wake-up opportunity time periods for data transmission.
  • the first communication device may not process service data during the first wake-up opportunity period, but wait for the arrival of the second wake-up opportunity period, and process service data during the second wake-up opportunity period. This is not limited.
  • the first communication device has data services to be processed at T2 time point, at this time because the first wake-up opportunity The time period has passed, but the second wake-up opportunity time period has not yet arrived, so the first communication device needs to wait for the arrival of the second wake-up opportunity time period, and when the second wake-up opportunity time period arrives, the first communication device can Process business data during the second wake-up opportunity period.
  • the first communication device needs to exit the PSM mode and enter the connection state for tracking after the T3412 timer expires. area update, and then transfer to the next PSM mode cycle through the idle state, and select the latest wake-up opportunity time period in the next PSM mode cycle to process business data.
  • the method for PSM transmission provided by the embodiment of the present application is described in detail above in conjunction with FIGS. 1-6 .
  • the first communication device can determine the time period for waking up from the PSM mode according to the X wake-up opportunity time periods sent by the second communication device. , which is beneficial to reduce the power consumption of the first communication device.
  • the first communication device When the first communication device is in an idle state, the first communication device needs to periodically monitor paging messages according to DRX configuration. Since the paging message configuration is sent in the system message, and the system message is bound to the cell, in the scenario where the cell where the first communication device is located is bound to the geographic location, the first communication device may be in an unserved satellite base station In the case of monitoring the paging message according to the originally configured paging cycle, however, the paging message cannot be monitored in every paging cycle, which will also cause waste of power consumption.
  • an indication of the activation cycle (Active_cycle) for the paging cycle may be added in the SystemInformationBlockType2-NB->RadioResourceConfigCommonSIB-NB->PCCH-Config-NB field of the RRC message:
  • SEQUENCE ⁇ ... ⁇ indicates that all the parameters enumerated later can be included
  • ENUMERATED ⁇ ... ⁇ indicates that one of the parameters enumerated later is taken
  • Bit STRING(size(%)) indicates that the size of the bit string can be taken from the enumerated parameters later One of the parameter ranges listed.
  • a radio frame (radio frame, rf) 128 indicates that there are 128 radio frames, and rf 256, rf 512, and rf 1024 are similar to rf 128, and details are not repeated here.
  • fourT represents 4 paging cycles
  • halfT represents half a paging cycle
  • one16thT represents 1/16 paging cycles
  • other meanings such as quarterT are similar to one16thT, and will not be repeated here.
  • r1 means to repeat once
  • r2 means to repeat twice
  • other meanings such as r32 are similar to r1 and r2, and will not be repeated here.
  • Active_cycle Bit STRING(size(2...maxPeriod_of_cycles)) is a newly added field, and an indication of the activation period (Active_cycle) for the paging cycle can be added in this field.
  • the paging frame PF includes 10 subframes with identifiers from 0 to 9, and the paging occasion PO may be located in the subframe with the identifier 9.
  • the first communication device can select a cycle for monitoring paging messages according to the activation cycle indication, thereby reducing power consumption waste. It has been described above with reference to FIG. 7 that the first communication device can select an appropriate paging cycle for monitoring paging messages according to the activation cycle indication. In addition, the first communication device may also stop listening for a period of time according to the indication of the inactive window (Deactive_window).
  • an indication of an inactive window for the paging cycle may be added to the SystemInformationBlockType2-NB->RadioResourceConfigCommonSIB-NB->PCCH-Config-NB field of the RRC message:
  • INTEGER represents an integer type, and can take one of the parameter ranges enumerated later.
  • Deactive_window SEQUENCE ⁇ ... ⁇ field is a newly added field, and an indication for the inactive window (Deactive_window) can be added to this field, and the first communication device stops listening for a period of time based on the indication of the inactive window (Deactive_window) field After that, you can continue to monitor paging messages according to the original configuration.
  • the first communication device when the first communication device is in an idle state, the first communication device may also periodically monitor paging messages according to an extended disconnected reception (extended DRX, eDRX) configuration. Likewise, the time period for stopping monitoring may be indicated according to the indication information.
  • extended DRX extended disconnected reception
  • an IE: NB-IoT paging eDRX Information may be carried in the paging message sent by the network to the second communication device, and the information includes parameter information for NB-IoT paging eDRX, that is, NB-IoT paging eDRX Cycle, and a new inactive window start time point (Deactive_Window_Start) field and inactive duration (Deactive_duration) field are added, which are used to indicate the time period for the first communication device to stop listening, and also for the second communication device to stop sending paging messages time period.
  • the "Deactive_Window_Start” field may indicate the start time point of stopping monitoring
  • the “Deactive_duration” field may indicate the duration of notification monitoring.
  • hf2 represents 2 superframes
  • hf3 represents 3 superframes
  • others, such as hf16 have similar meanings to hf 2 and will not be repeated here.
  • s1 represents 1 subframe
  • s2 represents 2 subframes
  • others, such as s6, have similar meanings to s1 and will not be repeated here.
  • the cycle T eDRX corresponding to the "NB-IoT Paging eDRX Cycle" field is defined in the standard TS36.304[20], and its unit is the number of hyperframes.
  • the first communication device may request the eDRX configuration in the Attach Request message or the Tracking Area Update Request message, and accordingly, the network may carry the eDRX configuration in the Attach Accept message or the Tracking Area Update Accept message, and send the eDRX configuration to
  • a field of inactive window start time (Deactive_Window_Start) and inactive duration (Deactive_duration) is newly added in the eDRX configuration, which are used to indicate a time period for stopping monitoring.
  • the "inactive window start time point” may indicate the start time point of stopping listening
  • the “inactive duration” may indicate the duration of stopping listening.
  • the network sends the time period of stopping monitoring to the second communication device, and at the same time, the second communication device needs to send the time period of stopping listening to the first communication device, so that the second communication device can The sending of the paging message is stopped, and the first communication device stops listening to the paging message during the time period of stopping listening, which is beneficial to the synchronization of information between the first communication device and the second communication device.
  • sequence numbers of the above processes do not mean the order of execution, and the execution order of each process should be determined by its functions and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present application.
  • FIG. 8 shows a schematic block diagram of an apparatus 800 for PSM transmission provided by an embodiment of the present application.
  • the apparatus 800 includes: an output module 810 , a receiving module 820 and a processing module 830 .
  • the output module 810 is configured to: output a first request message, the first request message is used to request to enter the PSM mode;
  • the receiving module 820 is configured to: receive a first response message, the first response message includes the first indication information and the second Two indication information, the first indication information is used to indicate that the device enters the PSM mode, and the second indication information is used to indicate X wake-up opportunity time periods for the device in the PSM mode, where X is greater than or equal to 0;
  • processing module 830 is configured to: enter the PSM mode based on the first response message.
  • the second indication information includes the starting time point and the ending time point of each waking up opportunity time period in the X waking up opportunity time periods, or the starting time point and ending time point of each waking up opportunity time period. start time and duration.
  • the output module 810 is configured to: if the device has service data to be sent, the device outputs the service data in the first wake-up opportunity time period among the X wake-up opportunity time periods.
  • the first response message is an attach accept message or a tracking area update accept message.
  • the receiving module 820 is configured to: receive information of a first duration, where the first duration is used to indicate the delay time of the PSM mode; the processing module 830 is configured to: after receiving the first response message, pass the second After a while, enter the PSM mode.
  • the receiving module 820 is configured to: receive information of a second duration, the second duration is used to indicate the duration of the PSM mode; the processing module 830 is configured to: after entering the PSM mode, after the second duration, Exit the PSM mode.
  • the device 800 may specifically be the first communication device in the above embodiment, or the functions of the first communication device in the above embodiment may be integrated in the device 800 .
  • the above functions can be implemented by hardware, or can be implemented by executing corresponding software by hardware.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • the above-mentioned receiving module 820 may be a communication interface, such as a transceiver interface.
  • the device 800 may be configured to execute various processes and/or steps corresponding to the first communication device in the foregoing method embodiments.
  • FIG. 9 shows a schematic block diagram of another apparatus 900 for PSM transmission provided by an embodiment of the present application.
  • the apparatus 900 includes: a receiving module 910 and an output module 920 .
  • the receiving module 910 is configured to: receive a first request message, the first request message is used to request to enter the PSM mode; the output module 920 is configured to: output a first response message, the first response message includes the first indication information and the second Two indication information, the first indication information is used to instruct the first communication device to enter the PSM mode, and the second indication information is used to indicate X wake-up opportunity time periods for the first communication device in the PSM mode, where X is greater than or is equal to 0.
  • the second indication information includes the start time point and the end time point of each wake-up opportunity time period in the X wake-up opportunity time periods, or, the time point of each wake-up opportunity time period Start time point and duration.
  • the first response message is an attach accept message or a tracking area update accept message.
  • the output module 920 is configured to: output information of a first duration, where the first duration is used to indicate the delay time of the PSM mode.
  • the output module 920 is configured to: output information of a second duration, where the second duration is used to indicate the duration of the PSM mode.
  • the device 900 may specifically be the second communication device in the above embodiment, or the functions of the second communication device in the above embodiment may be integrated in the device 900 .
  • the above functions can be implemented by hardware, or can be implemented by executing corresponding software by hardware.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • the above-mentioned receiving module 910 may be a communication interface, such as a transceiver interface.
  • the device 900 may be configured to execute various procedures and/or steps corresponding to the second communication device in the foregoing method embodiments.
  • module here may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (such as a shared processor, a dedicated processor, or a group processor, etc.) and memory, incorporated logic, and/or other suitable components to support the described functionality.
  • ASIC application specific integrated circuit
  • processor such as a shared processor, a dedicated processor, or a group processor, etc.
  • memory incorporated logic, and/or other suitable components to support the described functionality.
  • the device 800 and the device 900 may also be a chip or a chip system, for example: a system on chip (system on chip, SoC).
  • the output module 810 may be a transceiver circuit of the chip, which is not limited here.
  • FIG. 10 shows a schematic block diagram of another apparatus 1000 for PSM transmission provided by an embodiment of the present application.
  • the apparatus 1000 includes a processor 1010 , a transceiver 1020 and a memory 1030 .
  • the processor 1010, the transceiver 1020 and the memory 1030 communicate with each other through an internal connection path, the memory 1030 is used to store instructions, and the processor 1010 is used to execute the instructions stored in the memory 1030 to control the transceiver 1020 to send signals and /or to receive a signal.
  • the device 1000 may specifically be the first communication device or the second communication device in the above embodiments, or the functions of the first communication device or the second communication device in the above embodiments may be integrated in the device 1000, and the device 1000 may It is used to execute various steps and/or procedures corresponding to the first communication device or the second communication device in the foregoing method embodiments.
  • the memory 1030 may include read-only memory and random-access memory, and provides instructions and data to the processor. A portion of the memory may also include non-volatile random access memory.
  • the memory may also store device type information.
  • the processor 1010 can be used to execute the instructions stored in the memory, and when the processor executes the instructions, the processor can execute the various steps and/or corresponding to the first communication device or the second communication device in the above method embodiments process.
  • the processor 1010 may be a central processing unit (central processing unit, CPU), and the processor may also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs) ), field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • DSPs digital signal processors
  • ASICs application specific integrated circuits
  • FPGA field programmable gate array
  • a general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.
  • each step of the above method can be completed by an integrated logic circuit of hardware in a processor or an instruction in the form of software.
  • the steps of the methods disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor.
  • the software module may be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register.
  • the storage medium is located in the memory, and the processor executes the instructions in the memory, and completes the steps of the above method in combination with its hardware. To avoid repetition, no detailed description is given here.
  • the present application also provides a communication device, including a communication interface and a logic circuit, the communication interface is used to send a first request message and/or receive a first response message, and the logic circuit is used to enter the PSM according to the first response message to execute The method in any possible implementation manner of the first aspect above.
  • the present application also provides another communication device, including a communication interface and a logic circuit, the communication interface is used to receive a first request message and/or send a first response message, and the logic circuit is used to transmit a PSM according to the first request message Execute the method in any possible implementation manner of the second aspect above.
  • the present application also provides yet another communication device, including a communication interface and a logic circuit, the communication interface is used to send a second request message and/or receive a second response message, and the logic circuit is used to monitor the search request according to the second response message.
  • the call message executes the method in any possible implementation manner of the third aspect above.
  • the present application also provides another communication device, including a communication interface and a logic circuit, where the communication interface is used to receive a second request message and/or send a second response message, and where the logic circuit is used to transmit a search request according to the second request message.
  • the monitoring timing of the call message executes the method in any possible implementation manner in the fourth aspect above.
  • the implementation of the present application also provides a communication system, which may include the first communication device shown in FIG. 8 above (the device 800 is embodied as the first communication device).
  • the implementation of the present application also provides a communication system, which may include the second communication device shown in FIG. 9 above (the device 900 is embodied as the second communication device).
  • the implementation of the present application also provides a communication system, which may include the first communication device (device 1000 embodied as the first communication device) shown in FIG. embodied as a second communication device).
  • a communication system which may include the first communication device (device 1000 embodied as the first communication device) shown in FIG. embodied as a second communication device).
  • the disclosed systems, devices and methods may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially or the part that contributes to the prior art or the 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 are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disc and other media that can store program codes. .

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Abstract

本申请提供了一种用于低功率模式PSM传输的方法和装置，有利于降低通信装置的功率损耗，该方法包括：第一通信装置向第二通信装置发送第一请求消息，该第一请求消息用于请求进入PSM模式；该第二通信装置基于该第一请求消息，向第一通信装置发送第一响应消息，该第一响应消息包括第一指示信息和第二指示信息，该第一指示信息用于指示该第一通信装置进入该PSM模式，该第二指示信息用于指示该第一通信装置在该PSM模式中的X个苏醒机会时间段，X大于或等于0；该第一通信装置基于该第一响应消息，进入所述PSM模式。

Description

用于低功率模式传输的方法和装置
本申请要求于2021年5月10日提交中国专利局、申请号为202110507782.8、申请名称为“用于低功率模式传输的方法和装置”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
本申请涉及通信技术领域，更具体地，涉及一种用于低功率模式(power saving mode，PSM)传输的方法和装置。
背景技术
PSM是物联网(internet of things，IoT)场景下引入的一种新型低功率模式。当通信装置无业务数据需要处理，期望进入PSM模式时，通信装置可以向网络请求PSM信息，在获得该PSM信息之后通信装置可以进入PSM模式。在PSM模式下，通信装置不可达，即网络无法联系上通信装置，以使该通信装置进入长时间的深度睡眠状态，达到节省功率损耗的目的。
目前，在一个PSM周期结束之后，或者，当通信装置有业务数据需要传输时，通信装置可以退出PSM模式，转换至连接状态。然而在卫星通信系统中，由于卫星基站是高速运动的，当通信装置退出PSM模式时，通信装置当前所处小区可能不存在卫星基站能与该通信装置进行通信，也就是说通信装置在不合适的时间退出了PSM模式，这样会造成功率浪费。
发明内容
本申请提供一种用于低功率模式PSM传输的方法和装置，有利于通信装置在合适的时间从PSM模式中苏醒，从而减少功率浪费。
第一方面，提供了一种用于低功率模式PSM传输的方法，包括：第一通信装置发送第一请求消息，该第一请求消息用于请求进入PSM模式；该第一通信装置接收第一响应消息，该第一响应消息包括第一指示信息和第二指示信息，该第一指示信息用于指示该第一通信装置进入该PSM模式，该第二指示信息用于指示该第一通信装置在该PSM模式中的X个苏醒机会时间段，X大于或等于0；该第一通信装置基于该第一响应消息，进入所述PSM模式。
在本申请实施例中，第一通信装置在接收到用于指示进入PSM模式的第一指示信息的同时，还收到用于指示该第一通信装置在该PSM模式中的X个苏醒机会时间段，在苏醒机会时间段内第一通信装置可以临时苏醒过来处理上下行业务数据，这样第一通信装置可以在合适的时间段苏醒，有利于降低第一通信装置的功率损耗。
结合第一方面，在第一方面的某些实现方式中，当X大于0时，该第二指示信息包括X个苏醒机会时间段中的每个苏醒机会时间段的起始时间点和终止时间点，或者，每个苏 醒机会时间段的起始时间点和持续时间。
在本申请实施例中，第一通信装置可以通过指示的每个苏醒机会时间段的起始时间点和终止时间点，或者起始时间点和持续时间来确定合适的苏醒机会时间段，这样指示简单直观，便于第一通信装置进行处理。
结合第一方面，在第一方面的某些实现方式中，在该第一通信装置基于该第一响应消息，进入该PSM模式之后，若该第一通信装置存在待发送的业务数据，该第一通信装置在X个苏醒机会时间段中的第一苏醒机会时间段发送该业务数据。
在本申请实施例中，若处于PSM模式的第一通信装置存在待发送的业务数据，则第一通信装置可以在X个苏醒机会时间段中选择第一苏醒机会时间段来发送业务数据，这样有利于业务数据的正常传输，减少功率损耗。
结合第一方面，在第一方面的某些实现方式中，所述第一响应消息为附着接受消息或追踪区更新接受消息。
在本申请实施例中，可以将用于指示X个苏醒机会时间段的第二指示信息通过附着接受消息或追踪区更新接受消息进行传输，这样有利于减少信令开销。
结合第一方面，在第一方面的某些实现方式中，第一通信装置接收第一时长的信息，该第一时长用于指示该PSM模式的延迟时间；该第一通信装置基于所述第一响应消息，进入该PSM模式，包括：该第一通信装置在接收到该第一响应消息之后，经过该第一时长，进入该PSM模式。
在本申请实施例中，第一通信装置在进入PSM模式之前有个延迟时间，即第一时长，在该第一时长之后第一通信装置进入PSM模式，这样有利于第一通信装置在进入PSM模式之前接收寻呼消息。
结合第一方面，在第一方面的某些实现方式中，第一通信装置接收第二时长的信息，该第二时长用于指示该PSM模式的持续时间；该第一通信装置在进入该PSM模式之后，经过该第二时长，退出该PSM模式。
在本申请实施例中，第一通信装置可以在第二时长结束之后退出PSM模式，避免该第一通信装置由于长时间处于PSM模式而未及时更新位置信息。
第二方面，提供了一种用于低功率模式PSM传输的方法，包括：第二通信装置接收第一请求消息，该第一请求消息用于请求进入PSM模式；该第二通信装置发送第一响应消息，该第一响应消息包括第一指示信息和第二指示信息，该第一指示信息用于指示第一通信装置进入该PSM模式，该第二指示信息用于指示该第一通信装置在该PSM模式中的X个苏醒机会时间段，X大于或等于0。
结合第二方面，在第二方面的某些实现方式中，当X大于0时，所述第二指示信息包括X个苏醒机会时间段中的每个苏醒机会时间段的起始时间点和终止时间点，或者，每个苏醒机会时间段的起始时间点和持续时间。
结合第二方面，在第二方面的某些实现方式中，第一响应消息为附着接受消息或追踪区更新接受消息。
结合第二方面，在第二方面的某些实现方式中，第二通信装置发送第一时长的信息，该第一时长用于指示该PSM模式的延迟时间。
结合第二方面，在第二方面的某些实现方式中，第二通信装置发送第二时长的信息，该第二时长用于指示该PSM模式的持续时间。
第三方面，提供了一种用于监听寻呼消息的方法，包括：第一通信装置发送第二请求消息，该第二请求消息用于请求寻呼消息的监听时机；该第一通信装置接收第二响应消息，该第二响应消息包括第三指示信息或第四指示信息，该第三指示信息用于指示该第一通信装置监听寻呼消息的寻呼周期，该第四指示信息用于指示该第一通信装置停止监听寻呼消息的时间段；该第一通信装置基于该第二响应消息，监听寻呼消息。
在本申请实施例中，可以通过第三指示信息或第四指示信息指示第一通信装置监听寻呼消息或者停止监听寻呼消息的时机，这样可以避免第一通信装置在无网络连接的情况下监听寻呼消息，有利于减少功耗浪费。
结合第三方面，在第三方面的某些实现方式中，第四指示信息包括该停止监听寻呼消息的时间段的起始时间点和终止时间点，或者，该停止监听寻呼消息的时间段的起始时间点和持续时间。
结合第三方面，在第三方面的某些实现方式中，第一通信装置基于该第二响应消息，监听寻呼消息，包括：该第一通信装置基于该第三指示信息，在至少一个寻呼周期中确定监听寻呼消息的目标寻呼周期；该第一通信装置在该目标寻呼周期内监听寻呼消息。
在本申请实施例中，第一通信装置存在至少一个寻呼周期，但可能在有的寻呼周期内无法监听到寻呼消息，因此可以通过第三指示信息指示至少一个寻呼周期中可以监听到寻呼消息的目标寻呼周期，这样有利于减少功率损耗。
结合第三方面，在第三方面的某些实现方式中，第一通信装置基于该第二响应消息，监听寻呼消息，包括：第一通信装置基于该第四指示信息，确定停止监听寻呼消息的时间段；该第一通信装置在该停止监听寻呼消息的时间段结束之后，继续监听寻呼消息。
在本申请实施例中，可以通过第四指示信息指示停止监听寻呼消息的时间段，在该停止监听寻呼消息的时间段内，第一通信装置无法监听到寻呼消息，因此第一通信装置在该停止监听寻呼消息的时间段无需进行监听，这样有利于减少功率损耗。
第四方面，提供了一种用于监听寻呼消息的方法，包括：第二通信装置接收第二请求消息，该第二请求消息用于请求寻呼消息的监听时机；该第二通信装置发送第二响应消息，该第二响应消息包括第三指示信息或第四指示信息，该第三指示信息用于指示第一通信装置监听寻呼消息的寻呼周期，所述第四指示信息用于指示该第一通信装置停止监听寻呼消息的时间段。
结合第四方面，在第四方面的某些实现方式中，该第四指示信息包括该停止监听寻呼消息的时间段的起始时间点和终止时间点，或者，起始时间点和持续时间。
结合第四方面，在第四方面的某些实现方式中，第二通信装置接收寻呼消息，该寻呼消息包括用于指示该第二通信装置停止发送寻呼消息的时间段；该第二通信装置在该停止发送寻呼消息的时间段停止发送该寻呼消息。
第五方面，提供了一种用于低功率模式PSM传输的装置，包括：用于执行上述任一方面中任一种可能的实现方式中的方法。具体地，该装置包括用于执行上述任一方面中任一种可能的实现方式中的方法的模块。
在一种设计中，该装置可以包括执行上述各个方面中所描述的方法/操作/步骤/动作所一一对应的模块，该模块可以是硬件电路，也可是软件，也可以是硬件电路结合软件实现。
在另一种设计中，该装置为通信芯片，通信芯片可以包括用于发送信息或数据的输入电路或者接口，以及用于接收信息或数据的输出电路或者接口。
在另一种设计中，该装置为通信设备，通信设备可以包括用于发送信息或数据的发射机，以及用于接收信息或数据的接收机。
在另一种设计中，该装置用于执行上述各个方面或各个方面任意可能的实现方式中的方法，该装置可以配置在上述第一通信装置或第二通信装置中，或者该装置本身即为上述第一通信装置或第二通信装置。
第六方面，提供了另一种用于低功率模式PSM传输的装置，包括，处理器，存储器，该存储器用于存储计算机程序，该处理器用于从存储器中调用并运行该计算机程序，使得该装置执行上述任一方面中任一种可能实现方式中的方法。
可选地，所述处理器为一个或多个，所述存储器为一个或多个。
可选地，所述存储器可以与所述处理器集成在一起，或者所述存储器与处理器分离设置。
可选地，该通信设备还包括，发射机(发射器)和接收机(接收器)，发射机和接收机可以分离设置，也可以集成在一起，称为收发机(收发器)。
第七方面，提供了一种通信系统，包括：用于实现上述第一方面或第一方面的任一种可能实现的方法的装置，以及用于实现上述第二方面或第二方面的任一种可能实现的方法的装置；或者，用于实现上述第三方面或第三方面的任一种可能实现的方法的装置，以及用于实现上述第四方面或第四方面的任一种可能实现的方法的装置。
在一个可能的设计中，该通信系统还可以包括本申请实施例所提供的方案中与第一通信装置和/或第二通信装置进行交互的其他设备。
第八方面，提供了一种计算机程序产品，所述计算机程序产品包括：计算机程序(也可以称为代码，或指令)，当所述计算机程序被运行时，使得计算机执行上述任一方面中任一种可能实现方式中的方法。
第九方面，提供了一种计算机可读介质，所述计算机可读介质存储有计算机程序(也可以称为代码，或指令)当其在计算机上运行时，使得计算机执行上述任一方面中任一种可能实现方式中的方法。
第十方面，提供了一种通信装置，包括通信接口和逻辑电路，该通信接口用于发送第一请求消息和/或接收第一响应消息，该逻辑电路用于根据该第一响应消息进入PSM执行上述第一方面中任一种可能实现方式中的方法。
第十一方面，提供了另一种通信装置，包括通信接口和逻辑电路，该通信接口用于接收第一请求消息和/或发送第一响应消息，该逻辑电路用于根据该第一请求消息传输PSM执行上述第二方面中任一种可能实现方式中的方法。
第十二方面，提供了又一种通信装置，包括通信接口和逻辑电路，该通信接口用于发送第二请求消息和/或接收第二响应消息，该逻辑电路用于根据该第二响应消息监听寻呼消息执行上述第三方面中任一种可能实现方式中的方法。
第十三方面，提供了再一种通信装置，包括通信接口和逻辑电路，该通信接口用于接收第二请求消息和/或发送第二响应消息，该逻辑电路用于根据该第二请求消息传输寻呼消息的监听时机执行上述第四方面中任一种可能实现方式中的方法。
附图说明
图1是一种系统帧的示意图；
图2是一种UE在不同状态下的功率损耗示意图；
图3是本申请实施例提供的一种用于PSM传输的系统架构的示意图；
图4是本申请实施例提供的另一种用于PSM传输的系统架构的示意图；
图5是本申请实施例提供的一种用于PSM传输的方法的示意性流程图；
图6是本申请实施例提供的一种不同状态下的功率损耗示意图；
图7是本申请实施例提供的一种系统帧的示意图；
图8是本申请实施例提供的一种用于PSM传输的装置的示意性框图；
图9是本申请实施例提供的另一种用于PSM传输的装置的示意性框图；
图10是本申请实施例提供的再一种用于PSM传输的装置的示意性框图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
为便于理解，首先对本申请实施例所涉及的术语进行简单介绍。
1、非陆地网络(non terrestrial networks，NTN)：信息技术的迅速发展对通信的高效性、机动性、多样性等提出了更迫切的要求。由于传统地面网络无法为用户设备(user equipment，UE)提供无缝覆盖，特别是在大海、沙漠、空中等无法部署基站的地方，因此NTN被引入第五代移动通信网络(5th generation mobile networks，5G)中，NTN通过将基站或者部分基站功能部署在高空平台或者卫星上从而为UE提供无缝覆盖，并且高空平台或者卫星受自然灾害影响较小，能提升5G系统的可靠性。
2、卫星通信：在一些重要领域，如空间通信、航空通信、海事通信、军事通信等，卫星发挥着无可替代的作用。卫星通信具备通信距离远、覆盖面积大、组网灵活等特点，其既可为固定终端提供服务，也可为各种移动终端提供服务。
3、无线资源控制(radio resource control，RRC)状态：RRC状态包括空闲状态(RRC_IDLE)、非激活状态(RRC_INACTIVE)和连接状态(RRC_CONNECTED)。
UE处于连接状态(RRC_CONNECTED)时可以从网络收发数据，监听共享信道上指示控制授权的控制信令，并可以上报信道质量至网络。
UE处于空闲状态(RRC_IDLE)或者非激活状态(RRC_INACTIVE)时一般会关闭接收机并处于低功耗状态，为了接收基站发送的寻呼消息(paging message)，UE会周期性地从低功耗模式苏醒并尝试接收寻呼消息。寻呼消息主要包括系统消息变更通知或者自然灾害短消息警报。
4、不连续接收(discontinuous reception，DRX)：在蜂窝系统中，第三代合作伙伴计划(3rd generation partnership project，3GPP)设计了DRX机制以降低UE的功耗。根据DRX机制，当UE处于空闲状态(RRC_IDLE)或者非激活状态(RRC_INACTIVE)时，UE可以根据网络配置的DRX信息周期性地接收寻呼消息。
UE接收寻呼消息的具体时间是由寻呼帧(paging frame，PF)和寻呼时机(paging occasion，PO)确定的。PF表示发送寻呼消息的帧，即处于空闲状态(RRC_IDLE)或者非激活状态(RRC_INACTIVE)的UE只会在PF中尝试接收寻呼消息。PO表示在一个PF内尝试接收寻呼消息的时机，由于寻呼消息是采用寻呼无线网络临时标识(paging-radio network temporary identity，P-RNTI)加扰的下行控制信息(downlink control information，DCI)来调度的，因此一个PO实际上可以对应S个P-RNTI加扰的DCI的检测时机，其 中S可以通过系统消息获得。
图1是一种系统帧的示意图，如图1所示，一个寻呼周期(paging cycle)内包括16个系统帧，系统帧号(system frame number，SFN)为1的系统帧为寻呼帧PF，该寻呼帧PF包括标识符从0～9的10个子帧，寻呼时机PO可以位于标识符为9的子帧。UE可以在PF内接收寻呼消息，每一个PF可以对应多个PO，但是网络并不是在每一个PO上都会向UE发送寻呼消息。
下面以窄带物联网(narrow band internet of things，NB-IoT)为例说明获取PF和PO的方式。
示例性地，PF位于满足如下公式的系统帧中：
SFN mod T＝(T div N)*(UE_ID mod N)
其中，mod表示求余运算，div表示整除运算，SFN表示系统帧号，T表示DRX周期，是一个时间单位，示例性地，可以为2.56秒，可以理解为UE在时间T内可以有一次或这多次机会尝试接收寻呼消息，N表示每个DRX周期中包括的PF数量。UE_ID是UE的标识符，可以基于国际移动用户识别码(international mobile subscriber identity，IMSI)确定，示例性地，可以通过IMSI mod 4096计算得到UE_ID。
示例性地，可基于以下公式确定PO的位置：
I_s＝floor(UE_ID/N)mod(Ns)
其中，floor(·)表示向下取整运算，Ns表示每个PF中包括的PO的数目。基于计算得到的I_s索引，可通过表一查询PO的位置。
表一
Ns i_s＝0 i_s＝1 i_s＝2 i_s＝3
1 9 N/A N/A N/A
2 4 9 N/A N/A
4 0 4 5 9
在表一中，Ns的取值可以为1，2或4，I_s的取值可以为0，1，2或3，N/A表示不存在PO的位置。不同的Ns和I_s取值对应不同的PO位置，示例性地，由表一可知，当Ns＝1且I_s＝0时，PO可以位于如图1所示的标识符为9的子帧。
5、PSM模式：PSM是NB-IoT场景下引入的新型低功耗模式，属于非接入层(non-access stratum，NAS)的功能，可以由UE发起。在PSM模式下，UE可以进入长时间的深度睡眠模式，无需周期性地监听寻呼消息。当PSM激活后，网络无法与UE取得联系。
图2是一种UE在不同状态下的功率损耗示意图。图2中的横坐标表示时间，随着时间的变化UE的状态也在变化，纵坐标表示功率损耗，UE处于不同状态时的功率损耗也不同。由图2可知，UE开始处于连接状态(RRC_CONNECTED)，在连接状态下UE可以处理上下行业务数据，在UE处理完业务数据之后，RRC连接会被释放，进入空闲状态(RRC_IDLE)，空闲状态对应多个DRX周期，在每个DRX周期内UE可以监听寻呼消息，也就是说UE在空闲状态下可以周期性地监听寻呼消息。
空闲状态对应一个定时器，示例性地，该定时器可以是T3324定时器(时长为0～255秒)，当该T3324定时器超时之后，UE可以从空闲状态进入PSM模式，因此，也可以将该T3324定时器叫做PSM模式的激活定时器，或者可以将T3324定时器的时长看作是UE 从空闲状态进入PSM模式的延迟时间。
在一种可能的实现方式中，UE可以在PSM模式对应的定时器超时之后退出PSM模式，示例性地，PSM模式对应的定时器可以是T3412定时器，T3412定时器的时长可以是6分钟，12分钟或者其他时长，本申请实施例对此不做限制。T3412定时器也可以称作追踪区更新(tracking area updating，TAU)周期请求定时器，在该T3412定时器超时之后，UE退出PSM模式进入连接状态进行TAU，在TAU结束之后若没有业务数据需要处理，则UE又由连接状态进入空闲状态，之后再进入PSM模式，如此循环。
在另一种可能的实现方式中，UE可以在有业务数据要处理时主动退出PSM模式，从而进入连接状态处理业务数据。
当UE基于上述两种可能的实现方式中的任意一种方式退出PSM模式时，考虑到在NTN场景下卫星平台是高速运动的，很可能UE所处小区的服务卫星基站在未来一段时间运动到了其他小区，而卫星拓扑中的其他卫星基站还未运动至UE所处小区，导致UE所处小区无卫星基站覆盖。这种情况下UE退出PSM模式UE，进入连接状态后，无法与卫星基站进行通信，也就是说UE在不正确的时间退出了PSM模式，这样会造成功耗浪费。
有鉴于此，本申请实施例提供了一种NTN场景下用于PSM传输的方法，卫星基站在传输PSM时，可以向UE分配在PSM模式中的苏醒机会时间段，当存在业务数据需要处理时，UE可以在苏醒机会时间段中临时苏醒，并在该苏醒机会时间段中处理业务数据。由于在该苏醒机会时间段中存在与UE进行通信的卫星基站，这样UE可以在合适的时间段中苏醒，有利于减少功耗浪费。
应理解，本申请实施例可以应用于多个不同的场景，例如，终端设备和网络设备之间的数据传输、终端设备和终端设备之间的数据传输、网络设备和网络设备之间的数据传输，本申请实施例对此不做限定，下面按照第一通信装置和第二通信装置对本申请实施例进行描述。
在介绍本申请实施例提供的用于低功率模式PSM传输的方法和装置之前，先做出以下几点说明。
第一，在下文示出的实施例中，各术语及英文缩略语，如PSM模式、苏醒机会时间段、附着接受消息、追踪区更新等，均为方便描述而给出的示例性举例，不应对本申请构成任何限定。本申请并不排除在已有或未来的协议中定义其它能够实现相同或相似功能的术语的可能。
第二，在下文示出的实施例中第一、第二以及各种数字编号仅为描述方便进行的区分，并不用来限制本申请实施例的范围。例如，区分不同的通信装置等。
第三，“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的情况，其中A，B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。“以下至少一项(个)”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a、b和c中的至少一项(个)，可以表示：a，或b，或c，或a和b，或a和c，或b和c，或a、b和c，其中a，b，c可以是单个，也可以是多个。
图3是本申请实施例提供的一种用于PSM传输的系统架构300的示意图。系统架构300包括第一通信装置301、第二通信装置302和核心网303。
第二通信装置302可以部署在卫星上与第一通信装置301进行通信，并且第二通信装置302通过无线链路与地面的核心网303连接。
应理解，第一通信装置可以指用户设备、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。第一通信装置还可以是蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备，5G网络中的通信装置或者未来演进的公用陆地移动通信网络(public land mobile network，PLMN)中的通信装置等，本申请实施例对此并不限定。
作为示例而非限定，在本申请实施例中，第一通信装置还可以是可穿戴设备。可穿戴设备也可以称为穿戴式智能设备，是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称，如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上，或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备，更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能，例如：智能手表或智能眼镜等，以及只专注于某一类应用功能，需要和其它设备如智能手机配合使用，如各类进行体征监测的智能手环、智能首饰等。
此外，在本申请实施例中，第一通信装置还可以是IoT系统中的终端设备，IoT是未来信息技术发展的重要组成部分，其主要技术特点是将物品通过通信技术与网络连接，从而实现人机互连，物物互连的智能化网络。在本申请实施例中，IoT技术可以通过例如窄带NB-IoT技术，做到海量连接，深度覆盖，终端省电。
此外，在本申请实施例中，第一通信装置还可以是采用设备到设备(device-to-device，D2D)通信技术的终端设备。D2D技术是指两个对等的终端设备之间直接进行通信的一种通信方式，在由D2D终端设备组成的分散式网络中，每个终端设备节点都能发送和接收信号，并且具有自动路由(转发消息)的功能。
第二通信装置可以是全球移动通信(global system for mobile communications，GSM)系统或码分多址(code division multiple access，CDMA)中的基站(base transceiver station，BTS)，也可以是宽带码分多址(wideband code division multiple access，WCDMA)系统中的基站(NodeB，NB)，也可以是IoT系统中的IoT基站或者窄带物联网(narrow band internet of things，NB-IoT)系统中的NB-IoT基站，还可以是LTE系统中的演进型基站(evolved NodeB，eNB或eNodeB)，还可以是云无线接入网络(cloud radio access network，CRAN)场景下的无线控制器，或者该第二通信装置可以为中继站、接入点、车载设备、可穿戴设备以及5G网络中的通信装置或者未来演进的PLMN网络中的通信装置等，本申请实施例并不限定。
本申请实施例中的第二通信装置可以是无线网络中的设备，例如将终端接入到无线网络的无线接入网(radio access network，RAN)节点。目前，一些RAN节点的举例为：基站、下一代基站gNB、发送接收点(transmission reception point，TRP)、演进型节点B(evolved Node B，eNB)、家庭基站、基带单元(baseband unit，BBU)，或WiFi系统中的接入点(access point，AP)等。在一种网络结构中，第二通信装置可以包括集中单元 (centralized unit，CU)节点、或分布单元(distributed unit，DU)节点、或包括CU节点和DU节点的RAN设备。
图4是本申请实施例提供的另一种用于PSM传输的系统架构400的示意图。应理解，系统架构400是对系统架构300的更为具体的描述，下面以第一通信装置301为终端设备，第二通信装置302为5G卫星基站，核心网303为5G核心网为例对系统架构400进行描述。由图4可知，系统架构400包括两个终端设备401、两个5G卫星基站402、地面站403和5G核心网404。其中，5G核心网404包括5G控制面405和5G数据面406。
其中，终端设备401可以是支持5G新空口的手机、PAD等设备，终端设备401可以通过空口接入卫星网络并发起呼叫、上网等业务。
5G卫星基站402主要提供无线接入服务，可以为接入的终端设备调度无线资源，提供可靠的无线传输协议和数据加密协议。
地面站403主要负责转发5G卫星基站402和5G核心网404之间的信令和业务数据。
5G核心网404主要负责用户接入控制、移动性管理、会话管理、用户安全认证、计费等业务。5G核心网404有多个功能单元组成，可以分为5G控制面405和5G数据面406这两个功能实体。
5G控制面405包括5G接入移动管理网元(access and mobility management function，AMF)407和5G会话管理网元(session management function，SMF)408。其中，5G AMF407负责用户接入管理、安全认证以及移动性管理。5G SMF 408负责与分离的5G数据面406交互，创建、更新和删除协议数据单元(protocol data unit，PDU)会话，并管理与PDU的会话环境。
5G数据面406包括5G用户面网元(user plane function，UPF)409和数据网络410。其中，5G UPF 409负责与数据网络410的交互，管理用户面数据的传输、流量统计以及安全窃听等功能。
数据网络410可以为5G UPD 409提供海量、多样性的数据。
在系统架构400中，5G新空口表示终端设备401和5G卫星基站402之间的无线链路。Xn接口表示两个5G卫星基站402之间的接口，主要用于切换等信令交互。NG接口表示5G卫星基站402与5G核心网404之间的接口，主要用于交互5G核心网404的NAS信令以及用户的业务数据。
5G卫星基站402可以向终端设备401传输下行数据，其中数据采用信道编码进行编码，信道编码后的数据经过星座调制后传输至终端设备401。终端设备401向5G卫星基站402传输上行数据，上行数据也可以采用信道编码进行编码，编码后的数据经过星座调制后传输至5G卫星基站402。
图5是本申请实施例提供的一种用于PSM传输的方法500的示意性流程图。方法500包括以下步骤：
S501，第一通信装置发送第一请求消息，该第一请求消息用于请求进入PSM模式。相应地，第二通信装置接收该第一请求消息。
S502，第二通信装置发送第一响应消息，相应地，第一通信装置接收该第一响应消息。
该第一响应消息包括第一指示信息和第二指示信息，该第一指示信息用于指示该第一通信装置进入该PSM模式，该第二指示信息用于指示该第一通信装置在该PSM模式中的X个苏醒机会时间段，X大于或等于0。
S503，第一通信装置基于该第一响应消息，进入该PSM模式。
在本申请实施例中，第一通信装置可以向第二通信装置请求进行PSM模式，第二通信装置若允许第一通信装置进入PSM模式，则第二通信装置可以通过第一指示信息指示第一通信装置进入PSM模式，并且通过第二指示信息指示第一通信装置在PSM模式中可以进行数据传输的X个苏醒机会时间段(wakeup occasion window)，X大于或等于0。
应理解，X个苏醒机会时间段可以根据星座拓扑的预测确定，基于星座拓扑可以预测卫星基站覆盖第一通信装置的时间，这样第一通信基站在接收到X个苏醒机会时间段后，便可根据X个苏醒机会时间段决定是否从PSM模式中苏醒，也就是说第一通信装置可以在合适的时间点从PSM模式中苏醒，有利于减少功耗浪费。
作为一个可选的实施例，当X大于0时，该第二指示信息包括该X个苏醒机会时间段中的每个苏醒机会时间段的起始时间点和终止时间点，或者，每个苏醒机会时间段的起始时间点和持续时间。
应理解，当X大于0时，意味着在PSM模式中存在第一通信装置可以苏醒的至少一个苏醒机会时间段。当X等于0时，意味着基于星座拓扑的预测，在PSM模式的持续时间内不存在第一通信装置可以苏醒的时间段，第一通信装置需要继续保持PSM模式以节省功耗。
在本申请实施例中，第二指示信息可以包括苏醒机会时间段的不同形式。示例性地，第二通信装置可以通过第二指示信息指示每个苏醒机会时间段的起始时间点和终止时间点，或者，指示每个苏醒机会时间段的起始时间点和持续时间。
示例性地，第二通信装置可以表格的形式承载苏醒机会时间段的信息，其格式如表二或表三所示。
表二
Figure PCTCN2022090002-appb-000001
表三
Figure PCTCN2022090002-appb-000002
其中，苏醒机会信息元标识(information element identifier，IEI)用于指示该字段表示的具体含义。表二和表三示出了X个苏醒机会时间段中的其中一个苏醒机会时间段可能的承载形式。此外，X个苏醒机会时间段还可以在同一个表格中示出，或者将X个苏醒机会时间段分组在不同的表格中示出，本申请实施例对此不做限制。
作为一个可选的实施例，在S503之后，方法500还包括：若该第一通信装置存在待发送的业务数据，该第一通信装置在该X个苏醒机会时间段中的第一苏醒机会时间段发送该业务数据。
在本申请实施例中，若第一通信装置存在业务数据需要处理，第一通信装置可以选择 X个苏醒机会时间段中的第一苏醒机会时间段来传输数据，在该第一苏醒机会时间段结束之后，第一通信装置可以继续进入PSM模式。
应理解，该第一苏醒机会时间段可以为PSM模式中的X个苏醒机会时间段中的任意一个苏醒机会时间段，本申请实施例对此不做限制。当然，在实际应用中，该第一苏醒机会时间段肯定是在产生业务数据传输需求或TAU更新需求(或者其他需要苏醒的需求)之后。所以，严格意义上讲，该第一苏醒机会时间段可以为PSM模式中的X个苏醒机会时间段中的后X0个苏醒机会时间段中的任意一个苏醒机会时间段，该X0个苏醒机会时间段在产生业务数据传输需求或TAU更新需求(或者其他需要苏醒的需求)之后。在不影响理解的情况下，本申请还是以X为例进行说明。
作为一个可选的实施例，所述第一响应消息为附着接受消息或追踪区更新接受消息。
在本申请实施例中，第一通信装置可以在附着(attach)流程或者追踪区更新TAU流程中通过附着请求消息或者追踪区更新请求消息向第二通信装置请求进入PSM模式。相应地，第二通信装置可以向第一通信装置发送附着接受消息或追踪区更新接受消息，以指示第一通信装置进入PSM模式，并且指示第一通信装置在PSM模式中的苏醒机会时间段。
作为一个可选的实施例，方法500还包括：第一通信装置接收第一时长的信息，该第一时长用于指示该PSM模式的延迟时间。S503包括：第一通信装置在接收到该第一响应消息之后，经过该第一时长，进入该PSM模式。
在本申请实施例中，第一时长用于指示该PSM模式的延迟时间，也就是第一通信装置从空闲状态开始，直至进入PSM模式的时长。
示例性地，该第一时长可以是T3324定时器的时长，T3324定时器可以看作是PSM模式的激活定时器，在T3324定时器超时之后，第一通信装置可以进入PSM模式。
作为一个可选的实施例，方法500还包括：第一通信装置接收第二时长的信息，该第二时长用于指示该PSM模式的持续时间；该第一通信装置在进入该PSM模式之后，经过该第二时长，退出该PSM模式。
在本申请实施例中，第二时长用于指示该PSM模式的持续时间，也就是第一通信装置从空闲状态开始，直至退出PSM模式的时长。
示例性地，该第二时长可以是T3412定时器的时长，在T3412定时器超时之后，第一通信装置可以退出PSM模式。
应理解，在PSM模式中若存在苏醒机会时间段，但是并无业务数据需要处理，且第二时长还未结束，则第一通信装置仍然不退出PSM模式，直至该第二时长结束后，退出该PSM模式。
图6是本申请实施例提供的一种不同状态下的功率损耗示意图。相较于图1，图6中的PSM模式的持续时间内存在X个苏醒机会时间段，X大于或等于0。
第一通信装置在处理完数据之后可以进入空闲状态，该空闲状态对应T3324定时器，在T3324定时器超时后，第一通信装置可以进入PSM模式。当在PSM模式中存在如图所示的X个苏醒机会时间段时，第一通信装置可以在该X个苏醒机会时间段中的选择一个苏醒机会时间段进行数据传输。
示例性地，当X＝0，即第二通信装置指示第一通信装置在PSM模式中不存在可以苏醒的时间段，第一通信装置即便存在需要处理的业务数据也不用苏醒过来，一直保持PSM模式直至T3412超时后退出PSM模式。
示例性地，若在PSM模式中存在如图所示的两个苏醒机会时间段，即X＝2，且在T1时间点第一通信装置有数据业务要处理，但此时在PSM模式中的第一个苏醒机会时间段还未到来，因此第一通信装置需要等待第一个苏醒机会时间段的到来，当第一个苏醒机会时间段到来时，第一通信装置可以在第一个苏醒机会时间段处理业务数据。
此外，第一通信装置还可以不在第一个苏醒机会时间段处理业务数据，而是等待第二个苏醒机会时间段的到来，在第二个苏醒机会时间段处理业务数据，本申请实施例对此不做限制。
示例性地，若在PSM模式中存在如图所示的两个苏醒机会时间段，即X＝2，且在T2时间点第一通信装置有数据业务要处理，此时因为第一个苏醒机会时间段已经过去，但是第二个苏醒机会时间段还未到来，因此第一通信装置需要等待第二个苏醒机会时间段的到来，当第二个苏醒机会时间段到来时，第一通信装置可以在第二个苏醒机会时间段处理业务数据。
示例性地，若在PSM模式中存在如图所示的两个苏醒机会时间段，即X＝2，且在T3时间点第一通信装置有数据业务要处理，但此时第一个苏醒机会时间段和第二个苏醒机会时间段已经过去，之后并无苏醒机会时间段供第一通信装置进行数据传输，因此第一通信装置需要在T3412定时器超时之后，退出PSM模式进入连接状态进行追踪区更新，之后再通过空闲状态转入下一个PSM模式的周期，并选择下一个PSM模式的周期中最近的一个苏醒机会时间段处理业务数据。
当X取其他数值时，其处理过程与X＝2类似，本申请实施例在此不再赘述。
上述结合图1-图6详细描述了本申请实施例提供的用于PSM传输的方法，第一通信装置可以根据第二通信装置发送的X个苏醒机会时间段确定从PSM模式中苏醒的时间段，这样有利于减少第一通信装置的功率损耗。
当第一通信装置处于空闲状态时，第一通信装置需要根据DRX配置周期性地监听寻呼消息。由于寻呼消息配置是在系统消息中发送的，而系统消息和小区是绑定的，在第一通信装置所处小区与地理位置绑定的场景下，第一通信装置可能在无服务卫星基站的情况下按照原先配置的寻呼周期监听寻呼消息，然而并不是在每个寻呼周期都可以监听到寻呼消息，这样同样会造成功耗浪费。
示例性地，可以在RRC消息的SystemInformationBlockType2-NB->RadioResourceConfigCommonSIB-NB->PCCH-Config-NB字段中增加针对寻呼周期的激活周期(Active_cycle)的指示：
Figure PCTCN2022090002-appb-000003
Figure PCTCN2022090002-appb-000004
其中，SEQUENCE{…}表示可以包括后面枚举的所有的参量，ENUMERATED{…}表示取后面枚举的参量中的一个，Bit STRING(size(…))表示该比特串的大小可以取后面枚举的参量范围中的其中一个。
示例性地，无线帧(radio frame，rf)128表示有128个无线帧，rf 256,rf 512,rf 1024与rf 128类似，此处不再赘述。
示例性地，fourT表示4个寻呼周期，halfT表示半个寻呼周期，one16thT表示1/16个寻呼周期，其他例如quarterT的含义与one16thT类似，此处不再赘述。
示例性地，r1表示重复1次，r2表示重复2次，其它例如r32的含义与r1、r2类似，此处不再赘述。
上述“Active_cycle Bit STRING(size(2……maxPeriod_of_cycles))”为新增字段，可在该字段中添加针对寻呼周期的激活周期(Active_cycle)的指示。示例性地，可以在该字段中以激活周期(active cycle)＝010000来指示在第2个寻呼周期监听寻呼消息。
图7是本申请实施例提供的一种系统帧的示意图。图7中包括6个寻呼周期，每个寻呼周期包括16个系统帧。当采用激活周期(active cycle)＝010000来指示在第2个寻呼周期监听寻呼消息时，示例性地，如图7所示，第二个寻呼周期中系统帧号为17的系统帧为寻呼帧PF，该寻呼帧PF包括标识符从0～9的10个子帧，寻呼时机PO可以位于标识符为9的子帧。
类似地，可以采用激活周期(active cycle)＝001000来指示在第3个寻呼周期监听寻呼消息。
也就是说，激活周期(active cycle)从左往右的哪一位为1，则表示第一通信装置可以在相应的寻呼周期监听寻呼消息。
示例性地，还可以采用激活周期(active cycle)＝000010来指示在第2个寻呼周期监听寻呼消息，即激活周期指示从右往左的哪一位为1，则表示第一通信装置可以在相应的寻呼周期监听寻呼消息。应理解，还可以有其他针对寻呼周期的激活指示，本申请实施例对此不做限制。
这样通过在发送给第一通信装置的RRC消息的字段中添加寻呼周期的激活周期指示，第一通信装置可以根据激活周期指示选择监听寻呼消息的周期，从而有利于减少功耗浪费。上文结合图7描述了第一通信装置可以根据激活周期指示选择合适的监听寻呼消息的寻呼周期。此外，第一通信装置还可以根据非激活窗口(Deactive_window)的指示停止监听一段时间。
示例性地，可以在RRC消息的SystemInformationBlockType2-NB->RadioResourceConfigCommonSIB-NB->PCCH-Config-NB字段中增加针对寻呼周期的非激活窗口的指示：
Figure PCTCN2022090002-appb-000005
其中，SEQUENCE{…}、ENUMERATED{…}以及各自枚举的参量的含义已在上文中描述，此处不再赘述。INTEGER表示整型类型，可以取后面枚举的参量范围中的其中一个。
上述“Deactive_window SEQUENCE{…}”字段为新增字段，可以在该字段中添加针对非激活窗口(Deactive_window)的指示，第一通信装置基于该非激活窗口(Deactive_window)字段的指示，停止监听一段时间之后，可以继续按照原配置监听寻呼消息。
与DRX配置类似，当第一通信装置处于空闲状态时，第一通信装置还可以根据扩展不连接接收(extended DRX，eDRX)配置周期性地监听寻呼消息。同样地，可以根据指示信息指示停止监听的时间段。
示例性地，可以在网络向第二通信装置发送的寻呼消息中携带一个IE：NB-IoT paging eDRX Information，该信息包含了用于NB-IoT paging eDRX的参数信息，即NB-IoT paging eDRX Cycle，并且新增了非激活窗口起始时间点(Deactive_Window_Start)字段和非激活持续时间(Deactive_duration)字段，用于指示第一通信装置停止监听的时间段，也是第 二通信装置停止发送寻呼消息的时间段。如表四所示，可以在“Deactive_Window_Start”字段指示停止监听的起始时间点，在“Deactive_duration”字段指示通知监听的持续时间。
在表四中，“M”表示对应字段强制存在，“O”表示对应字段为可选地。
示例性地，hf2表示2个超帧，hf3表示3个超帧，其它例如hf16表示的含义与hf 2类似，此处不再赘述。
示例性地，s1表示1个子帧，s2表示2个子帧，其他例如s6表示的含义与s1类似，此处不再赘述。
“NB-IoT Paging eDRX Cycle”字段对应的周期T eDRX在标准TS36.304[20]中被定义，其单位(unit)为超帧数(number of hyperframes)。
示例性地，第一通信装置可以在附着请求消息或追踪区更新请求消息中请求eDRX配置，相应地，网络可以通过附着接受消息或者追踪区更新接受消息中携带eDRX配置，并将eDRX配置发送至第一通信装置，该eDRX配置中新增了非激活窗口起始时间点(Deactive_Window_Start)字段和非激活持续时间(Deactive_duration)字段，用于指示停止监听的时间段。如表五所示，可以在“非激活窗口起始时间点”指示停止监听的起始时间点，在“非激活持续时间”指示停止监听的持续时间。
应理解，网络向第二通信装置发送停止监听的时间段，同时也需要通过第二通信装置将该停止监听的时间段发送至第一通信装置，这样第二通信装置在该停止监听的时间段停止发送寻呼消息，第一通信装置在该停止监听的时间段停止监听寻呼消息，有利于第一通信装置和第二通信装置之间信息的同步。
表四
Figure PCTCN2022090002-appb-000006
表五
Figure PCTCN2022090002-appb-000007
应理解，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
上文中结合图3至图7，详细描述了根据本申请实施例的用于PSM传输的方法，下面将结合图8至图10详细描述根据本申请实施例的用于PSM传输的装置。
图8示出了本申请实施例提供的一种用于PSM传输的装置800的示意性框图，该装置800包括：输出模块810、接收模块820和处理模块830。
其中，输出模块810用于：输出第一请求消息，该第一请求消息用于请求进入PSM模式；接收模块820用于：接收第一响应消息，该第一响应消息包括第一指示信息和第二指示信息，该第一指示信息用于指示该装置进入该PSM模式，该第二指示信息用于指示该装置在该PSM模式中的X个苏醒机会时间段，X大于或等于0；处理模块830用于：基于该第一响应消息，进入该PSM模式。
可选地，当X大于0时，该第二指示信息包括X个苏醒机会时间段中的每个苏醒机会时间段的起始时间点和终止时间点，或者，每个苏醒机会时间段的起始时间点和持续时间。
可选地，输出模块810用于：若该装置存在待发送的业务数据，该装置在X个苏醒机会时间段中的第一苏醒机会时间段输出该业务数据。
可选地，第一响应消息为附着接受消息或追踪区更新接受消息。
可选地，接收模块820用于：接收第一时长的信息，该第一时长用于指示该PSM模式的延迟时间；处理模块830用于：在接收到该第一响应消息之后，经过该第一时长，进入该PSM模式。
可选地，接收模块820用于：接收第二时长的信息，该第二时长用于指示该PSM模式的持续时间；处理模块830用于：在进入该PSM模式之后，经过该第二时长，退出该PSM模式。
在一个可选的例子中，本领域技术人员可以理解，装置800可以具体为上述实施例中的第一通信装置，或者，上述实施例中第一通信装置的功能可以集成在装置800中。上述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。例如，上述接收模块820可以为通信接口，例如收发接口。装置800可以用于执行上述方法实施例中与第一通信装置对应的各个流程和/或步骤。
图9示出了本申请实施例提供的另一种用于PSM传输的装置900的示意性框图，该装置900包括：接收模块910和输出模块920。
其中，接收模块910用于：接收第一请求消息，该第一请求消息用于请求进入PSM模式；输出模块920用于：输出第一响应消息，该第一响应消息包括第一指示信息和第二指示信息，该第一指示信息用于指示第一通信装置进入该PSM模式，该第二指示信息用于指示该第一通信装置在该PSM模式中的X个苏醒机会时间段，X大于或等于0。
可选地，当X大于0时，所述第二指示信息包括X个苏醒机会时间段中的每个苏醒机会时间段的起始时间点和终止时间点，或者，每个苏醒机会时间段的起始时间点和持续时间。
可选地，第一响应消息为附着接受消息或追踪区更新接受消息。
可选地，输出模块920用于：输出第一时长的信息，该第一时长用于指示该PSM模式的延迟时间。
可选地，输出模块920用于：输出第二时长的信息，该第二时长用于指示该PSM模式的持续时间。
在一个可选的例子中，本领域技术人员可以理解，装置900可以具体为上述实施例中的第二通信装置，或者，上述实施例中第二通信装置的功能可以集成在装置900中。上述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。例如，上述接收模块910可以为通信接口，例如收发接口。装置900可以用于执行上述方法实施例中与第二通信装置对应的各个流程和/或步骤。
应理解，这里的装置800和装置900以功能模块的形式体现。这里的术语“模块”可以指应用特有集成电路(application specific integrated circuit，ASIC)、电子电路、用于执行一个或多个软件或固件程序的处理器(例如共享处理器、专有处理器或组处理器等)和存储器、合并逻辑电路和/或其它支持所描述的功能的合适组件。
在本申请的实施例，装置800和装置900也可以是芯片或者芯片系统，例如：片上系统(system on chip，SoC)。对应的，输出模块810可以是该芯片的收发电路，在此不做限定。
图10示出了本申请实施例提供的再一种用于PSM传输的装置1000的示意性框图。该装置1000包括处理器1010、收发器1020和存储器1030。其中，处理器1010、收发器1020和存储器1030通过内部连接通路互相通信，该存储器1030用于存储指令，该处理器1010用于执行该存储器1030存储的指令，以控制该收发器1020发送信号和/或接收信号。
应理解，装置1000可以具体为上述实施例中的第一通信装置或第二通信装置，或者，上述实施例中第一通信装置或第二通信装置的功能可以集成在装置1000中，装置1000可以用于执行上述方法实施例中与第一通信装置或第二通信装置对应的各个步骤和/或流程。可选地，该存储器1030可以包括只读存储器和随机存取存储器，并向处理器提供指令和数据。存储器的一部分还可以包括非易失性随机存取存储器。例如，存储器还可以存储设备类型的信息。该处理器1010可以用于执行存储器中存储的指令，并且该处理器执行该指令时，该处理器可以执行上述方法实施例中与第一通信装置或第二通信装置对应的各个步骤和/或流程。
应理解，在本申请实施例中，处理器1010可以是中央处理单元(central processing unit，CPU)，该处理器还可以是其他通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
在实现过程中，上述方法的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器， 闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器执行存储器中的指令，结合其硬件完成上述方法的步骤。为避免重复，这里不再详细描述。
本申请还提供了一种通信装置，包括通信接口和逻辑电路，该通信接口用于发送第一请求消息和/或接收第一响应消息，该逻辑电路用于根据该第一响应消息进入PSM执行上述第一方面中任一种可能实现方式中的方法。
本申请还提供了另一种通信装置，包括通信接口和逻辑电路，该通信接口用于接收第一请求消息和/或发送第一响应消息，该逻辑电路用于根据该第一请求消息传输PSM执行上述第二方面中任一种可能实现方式中的方法。
本申请还提供了又一种通信装置，包括通信接口和逻辑电路，该通信接口用于发送第二请求消息和/或接收第二响应消息，该逻辑电路用于根据该第二响应消息监听寻呼消息执行上述第三方面中任一种可能实现方式中的方法。
本申请还提供了再一种通信装置，包括通信接口和逻辑电路，该通信接口用于接收第二请求消息和/或发送第二响应消息，该逻辑电路用于根据该第二请求消息传输寻呼消息的监听时机执行上述第四方面中任一种可能实现方式中的方法。
本申请实施还提供了一种通信系统，该通信系统可以包括上述图8所示的第一通信装置(装置800体现为第一通信装置)。
本申请实施还提供了一种通信系统，该通信系统可以包括上述图9所示的第二通信装置(装置900体现为第二通信装置)。
本申请实施还提供了一种通信系统，该通信系统可以包括上述图10所示的第一通信装置(装置1000体现为第一通信装置)或上述图10所示的第二通信装置(装置1000体现为第二通信装置)。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，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，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
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，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能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)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。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (27)

  1. 一种用于低功率模式PSM传输的方法，其特征在于，包括：
    第一通信装置发送第一请求消息，所述第一请求消息用于请求进入PSM模式；
    所述第一通信装置接收第一响应消息，所述第一响应消息包括第一指示信息和第二指示信息，所述第一指示信息用于指示所述第一通信装置进入所述PSM模式，所述第二指示信息用于指示所述第一通信装置在所述PSM模式中的X个苏醒机会时间段，X大于或等于0；
    所述第一通信装置基于所述第一响应消息，进入所述PSM模式。
  2. 根据权利要求1所述的方法，其特征在于，当X大于0时，所述第二指示信息包括所述X个苏醒机会时间段中的每个苏醒机会时间段的起始时间点和终止时间点，或者，所述每个苏醒机会时间段的起始时间点和持续时间。
  3. 根据权利要求1或2所述的方法，其特征在于，在所述第一通信装置基于所述第一响应消息，进入所述PSM模式之后，所述方法还包括：
    若所述第一通信装置存在待发送的业务数据，所述第一通信装置在所述X个苏醒机会时间段中的第一苏醒机会时间段发送所述业务数据。
  4. 根据权利要求1-3中任一项所述的方法，其特征在于，所述第一响应消息为附着接受消息或追踪区更新接受消息。
  5. 根据权利要求1-4中任一项所述的方法，其特征在于，所述方法还包括：
    所述第一通信装置接收第一时长的信息，所述第一时长用于指示所述PSM模式的延迟时间；
    所述第一通信装置基于所述第一响应消息，进入所述PSM模式，包括：
    所述第一通信装置在接收到所述第一响应消息之后，经过所述第一时长，进入所述PSM模式。
  6. 根据权利要求1-5中任一项所述的方法，其特征在于，所述方法还包括：
    所述第一通信装置接收第二时长的信息，所述第二时长用于指示所述PSM模式的持续时间；
    所述第一通信装置在进入所述PSM模式之后，经过所述第二时长，退出所述PSM模式。
  7. 一种用于低功率模式PSM传输的方法，其特征在于，包括：
    第二通信装置接收第一请求消息，所述第一请求消息用于请求进入PSM模式；
    所述第二通信装置发送第一响应消息，所述第一响应消息包括第一指示信息和第二指示信息，所述第一指示信息用于指示第一通信装置进入所述PSM模式，所述第二指示信息用于指示所述第一通信装置在所述PSM模式中的X个苏醒机会时间段，X大于或等于0。
  8. 根据权利要求7所述的方法，其特征在于，当X大于0时，所述第二指示信息包括所述X个苏醒机会时间段中的每个苏醒机会时间段的起始时间点和终止时间点，或者，所述每个苏醒机会时间段的起始时间点和持续时间。
  9. 根据权利要求7或8所述的方法，其特征在于，所述第一响应消息为附着接受消 息或追踪区更新接受消息。
  10. 根据权利要求7-9中任一项所述的方法，其特征在于，所述方法还包括：
    所述第二通信装置发送第一时长的信息，所述第一时长用于指示所述PSM模式的延迟时间。
  11. 根据权利要求7-10中任一项所述的方法，其特征在于，所述方法还包括：
    所述第二通信装置发送第二时长的信息，所述第二时长用于指示所述PSM模式的持续时间。
  12. 一种用于低功率模式PSM传输的装置，其特征在于，包括：
    输出模块，用于输出第一请求消息，所述第一请求消息用于请求进入PSM模式；
    接收模块，用于接收第一响应消息，所述第一响应消息包括第一指示信息和第二指示信息，所述第一指示信息用于指示所述装置进入所述PSM模式，所述第二指示信息用于指示所述装置在所述PSM模式中的X个苏醒机会时间段，X大于或等于0；
    处理模块，用于基于所述第一响应消息，进入所述PSM模式。
  13. 根据权利要求12所述的装置，其特征在于，当X大于0时，所述第二指示信息包括所述X个苏醒机会时间段中的每个苏醒机会时间段的起始时间点和终止时间点，或者，所述每个苏醒机会时间段的起始时间点和持续时间。
  14. 根据权利要求12或13所述的装置，其特征在于，所述输出模块还用于：
    若所述装置存在待发送的业务数据，所述装置在所述X个苏醒机会时间段中的第一苏醒机会时间段输出所述业务数据。
  15. 根据权利要求12-14中任一项所述的装置，其特征在于，所述第一响应消息为附着接受消息或追踪区更新接受消息。
  16. 根据权利要求12-15中任一项所述的装置，其特征在于，所述接收模块还用于：
    接收第一时长的信息，所述第一时长用于指示所述PSM模式的延迟时间；
    所述处理模块用于：在接收到所述第一响应消息之后，经过所述第一时长，进入所述PSM模式。
  17. 根据权利要求12-16中任一项所述的装置，其特征在于，所述接收模块还用于：
    接收第二时长的信息，所述第二时长用于指示所述PSM模式的持续时间；
    所述处理模块用于：在进入所述PSM模式之后，经过所述第二时长，退出所述PSM模式。
  18. 一种用于低功率模式PSM传输的装置，其特征在于，包括：
    接收模块，用于接收第一请求消息，所述第一请求消息用于请求进入PSM模式；
    输出模块，用于输出第一响应消息，所述第一响应消息包括第一指示信息和第二指示信息，所述第一指示信息用于指示第一通信装置进入所述PSM模式，所述第二指示信息用于指示所述第一通信装置在所述PSM模式中的X个苏醒机会时间段，X大于或等于0。
  19. 根据权利要求18所述的装置，其特征在于，当X大于0时，所述第二指示信息包括所述X个苏醒机会时间段中的每个苏醒机会时间段的起始时间点和终止时间点，或者，所述每个苏醒机会时间段的起始时间点和持续时间。
  20. 根据权利要求18或19所述的装置，其特征在于，所述第一响应消息为附着接受消息或追踪区更新接受消息。
  21. 根据权利要求18-20中任一项所述的装置，其特征在于，所述输出模块用于：
    输出第一时长的信息，所述第一时长用于指示所述PSM模式的延迟时间。
  22. 根据权利要求18-21中任一项所述的装置，其特征在于，所述输出模块用于：
    输出第二时长的信息，所述第二时长用于指示所述PSM模式的持续时间。
  23. 一种通信系统，其特征在于，包括权利要求12-17中任一项所述的装置和权利要求18-22中任一项所述的装置。
  24. 一种计算机可读存储介质，其特征在于，用于存储计算机程序，所述计算机程序包括用于实现如权利要求1-11中任一项所述的方法的指令。
  25. 一种计算机程序产品，其特征在于，所述计算机程序产品中包括计算机程序代码，当所述计算机程序代码在计算机上运行时，使得计算机实现如权利要求1-11中任一项所述的方法。
  26. 一种通信装置，其特征在于，包括：通信接口和逻辑电路，所述通信接口用于发送第一请求消息和/或接收第一响应消息，所述逻辑电路用于根据所述第一响应消息进入PSM执行权利要求1-6中任一项所述的方法。
  27. 一种通信装置，其特征在于，包括：通信接口和逻辑电路，所述通信接口用于接收第一请求消息和/或发送第一响应消息，所述逻辑电路用于根据所述第一请求消息传输PSM执行权利要求7-11中任一项所述的方法。
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