Method and device for monitoring paging message

Abstract

Provided are a method and apparatus for monitoring a paging message, which can be applied to an NTN, such as a satellite communication system, the method comprising: a first communication device sending an attach request message, the attach request message comprising a configuration for requesting discontinuous reception (DRX), the first communication device receiving an attach accept message, the attachment accept message comprises DRX configuration and inactive time period information, the inactive time period information is used for indicating a time period for indicating to stop monitoring the paging message, and the first communication device monitors the paging message according to the DRX configuration and the inactive time period information.

Description

[0001] This application is a divisional application. The application number of the original application is 202110507782.8, the filing date of the original application is May 10, 2021, and the entire content of the original application is incorporated herein by reference. Technical Field

[0002] This application relates to the field of communication technologies, and more particularly, to a method and apparatus for monitoring paging messages. Background Art

[0003] PSM is a new low-power mode introduced in the Internet of Things (IoT) scenario. When a communication device has no service data to process and expects to enter the power saving mode (PSM), the communication device can request PSM information from the network. After obtaining the PSM information, the communication device can enter the PSM mode. In the PSM mode, 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.

[0004] Currently, after a PSM cycle ends, or when the communication device has service data to transmit, the communication device can exit the PSM mode and switch to the connected state. However, in a satellite communication system, since the satellite base station moves at a high speed, when the communication device exits the PSM mode, the cell where the communication device is currently located may not have a satellite base station that can communicate with the communication device. That is to say, the communication device exits the PSM mode at an inappropriate time, which will cause power waste. Summary of the Invention

[0005] This application provides a method and apparatus 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.

[0006] In a first aspect, a method for PSM transmission in a low-power mode is provided, including: a first communication device sends a first request message for requesting to enter the PSM mode; the first communication device receives a first response message, the first response message includes first indication information and second indication information, the first indication information is used to indicate the first communication device to enter the PSM mode, and the second indication information is used to indicate X wake-up opportunity time periods of the first communication device in the PSM mode, where X is greater than or equal to 0; the first communication device enters the PSM mode based on the first response message.

[0007] In an embodiment of the present application, while receiving the first indication information for indicating entry into the PSM mode, the first communication device also receives information indicating X wake-up opportunity time periods of the first communication device in the PSM mode. During the wake-up opportunity time periods, the first communication device can temporarily wake up to process uplink and downlink service data. In this way, the first communication device can wake up during appropriate time periods, which helps reduce the power consumption of the first communication device.

[0008] In combination with the first aspect, in some implementation manners of the first aspect, when X is greater than 0, the second indication information includes the start time point and end time point of each wake-up opportunity time period among the X wake-up opportunity time periods, or the start time point and duration of each wake-up opportunity time period.

[0009] In an embodiment of the present application, the first communication device can determine appropriate wake-up opportunity time periods based on the start time point and end time point, or the start time point and duration of each indicated wake-up opportunity time period. In this way, the indication is simple and intuitive, facilitating processing by the first communication device.

[0010] In combination with the first aspect, in some implementation manners of the first aspect, after the first communication device enters the PSM mode based on the first response message, if there is service data to be sent by the first communication device, the first communication device sends the service data during the first wake-up opportunity time period among the X wake-up opportunity time periods.

[0011] In an embodiment of the present application, if the first communication device in the PSM mode has service data to be sent, the first communication device can select the first wake-up opportunity time period among the X wake-up opportunity time periods to send the service data. In this way, it is beneficial to the normal transmission of service data and reduces power consumption.

[0012] In combination with the first aspect, in some implementation manners of the first aspect, the first response message is an attachment acceptance message or a tracking area update acceptance message.

[0013] In an embodiment of the present application, the second indication information for indicating X wake-up opportunity time periods can be transmitted through an attachment acceptance message or a tracking area update acceptance message. In this way, it helps reduce signaling overhead.

[0014] In combination with the first aspect, in some implementation manners of the first aspect, 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 enters the PSM mode based on the first response message, including: after receiving the first response message, the first communication device enters the PSM mode after the first duration.

[0015] In the embodiment of the present application, there is a delay time, i.e., a first duration, before the first communication device enters the PSM mode. After this first duration, the first communication device enters the PSM mode, which is beneficial for the first communication device to receive paging messages before entering the PSM mode.

[0016] In combination with the first aspect, in some implementation manners of the first aspect, 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 this second duration, it exits the PSM mode.

[0017] In the embodiment of the present application, the first communication device can exit the PSM mode after the end of the second duration, 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.

[0018] In a second aspect, a method for PSM transmission in a low-power mode is provided, 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 response message, and the first response message includes first indication information and second indication information, the first indication information is used to indicate the first communication device to enter the PSM mode, and the second indication information is used to indicate X wake-up opportunity time periods of the first communication device in the PSM mode, where X is greater than or equal to 0.

[0019] In combination with the second aspect, in some implementation manners of the second aspect, when X is greater than 0, the second indication information includes the start time point and end time point of each wake-up opportunity time period in the X wake-up opportunity time periods, or the start time point and duration of each wake-up opportunity time period.

[0020] In combination with the second aspect, in some implementation manners of the second aspect, the first response message is an attachment acceptance message or a tracking area update acceptance message.

[0021] In combination with the second aspect, in some implementation manners of the second aspect, the second communication device sends information of a first duration, and the first duration is used to indicate the delay time of the PSM mode.

[0022] In combination with the second aspect, in some implementation manners of the second aspect, the second communication device sends information of a second duration, and the second duration is used to indicate the duration of the PSM mode.

[0023] In a third aspect, a method for listening for paging messages is provided, including: a first communication device sends a second request message, where the second request message is used to request a listening opportunity for paging messages; the first communication device receives a second response message, where the second response message includes third indication information or fourth indication information, the third indication information is used to indicate a paging cycle for the first communication device to listen for paging messages, and the fourth indication information is used to indicate a time period during which the first communication device stops listening for paging messages; the first communication device listens for paging messages based on the second response message.

[0024] In an embodiment of the present application, the third indication information or the fourth indication information can be used to indicate the opportunity for the first communication device to listen for paging messages or stop listening for paging messages, which can avoid the first communication device listening for paging messages when there is no network connection, and is beneficial to reducing power consumption waste.

[0025] In combination with the third aspect, in some implementation manners of the third aspect, the fourth indication information includes a start time point and an end time point of the time period during which the paging message listening is stopped, or a start time point and a duration of the time period during which the paging message listening is stopped.

[0026] In combination with the third aspect, in some implementation manners of the third aspect, the first communication device listens for paging messages based on the second response message, including: the first communication device determines a target paging cycle for listening for paging messages in at least one paging cycle based on the third indication information; the first communication device listens for paging messages within the target paging cycle.

[0027] In an embodiment of the present application, there are at least one paging cycles for the first communication device, but it may not be able to listen for paging messages in some paging cycles. Therefore, the third indication information can be used to indicate the target paging cycle in which paging messages can be listened for among at least one paging cycle, which is beneficial to reducing power loss.

[0028] In combination with the third aspect, in some implementation manners of the third aspect, the first communication device listens for paging messages based on the second response message, including: the first communication device determines a time period during which the paging message listening is stopped based on the fourth indication information; the first communication device continues to listen for paging messages after the end of the time period during which the paging message listening is stopped.

[0029] In an embodiment of the present application, the time period during which the paging message listening is stopped can be indicated by the fourth indication information. During this time period, the first communication device cannot listen for paging messages. Therefore, the first communication device does not need to listen during this time period, which is beneficial to reducing power loss.

[0030] Fourth aspect, a method for listening for paging messages is provided, including: a second communication device receives a second request message for requesting a listening opportunity for paging messages; the second communication device sends a second response message, the second response message includes third indication information or fourth indication information, the third indication information is used to indicate a paging cycle for the first communication device to listen for paging messages, and the fourth indication information is used to indicate a time period for the first communication device to stop listening for paging messages.

[0031] In combination with the fourth aspect, in some implementation manners of the fourth aspect, the fourth indication information includes a start time point and an end time point of the time period for stopping listening for paging messages, or a start time point and a duration.

[0032] In combination with the fourth aspect, in some implementation manners of the fourth aspect, the second communication device receives a paging message, the paging message includes a time period for indicating the second communication device to stop sending paging messages; the second communication device stops sending the paging message during the time period for stopping sending paging messages.

[0033] Fifth aspect, a device for low power mode PSM transmission is provided, including: for performing the method in any one of the possible implementation manners in any of the above aspects. Specifically, the device includes a module for performing the method in any one of the possible implementation manners in any of the above aspects.

[0034] In one design, the device may include modules corresponding one by one to the methods / operations / steps / actions described in the above respective aspects, and the module may be a hardware circuit, software, or a combination of a hardware circuit and software.

[0035] In another design, the device is a communication chip, and 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.

[0036] In another design, the device is a communication device, and the communication device may include a transmitter for sending information or data, and a receiver for receiving information or data.

[0037] In another design, the device is used to perform the methods in the above respective aspects or any possible implementation manners of the respective aspects, and the device may be configured in the above first communication device or second communication device, or the device itself is the above first communication device or second communication device.

[0038] In a sixth aspect, another apparatus for PSM transmission in a low power mode is provided, including a processor and a memory for storing a computer program, the processor being configured to call and run the computer program from the memory, so that the apparatus executes the method in any of the possible implementation manners in any of the above aspects.

[0039] Optionally, the processor is one or more, and the memory is one or more.

[0040] Optionally, the memory may be integrated with the processor, or the memory is separately provided from the processor.

[0041] Optionally, the communication device further includes a transmitter and a receiver, which may be separately provided or integrated together as a transceiver.

[0042] In a seventh aspect, a communication system is provided, including: an apparatus for implementing the method in the first aspect or any of the possible implementation manners of the first aspect, and an apparatus for implementing the method in the second aspect or any of the possible implementation manners of the second aspect; or, an apparatus for implementing the method in the third aspect or any of the possible implementation manners of the third aspect, and an apparatus for implementing the method in the fourth aspect or any of the possible implementation manners of the fourth aspect.

[0043] In a possible design, 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.

[0044] In an eighth aspect, a computer program product is provided, the computer program product including: a computer program (which may also be referred to as code or instruction), when the computer program is run, causing a computer to execute the method in any of the possible implementation manners in any of the above aspects.

[0045] In a ninth aspect, a computer-readable medium is provided, the computer-readable medium storing a computer program (which may also be referred to as code or instruction), when it runs on a computer, causing the computer to execute the method in any of the possible implementation manners in any of the above aspects.

[0046] In a tenth aspect, a communication device is provided, including a communication interface and a logic circuit, the communication interface being configured to send a first request message and / or receive a first response message, and the logic circuit being configured to enter PSM according to the first response message and execute the method in any of the possible implementation manners in the first aspect.

[0047] In an eleventh aspect, another communication device is provided, 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 PSM according to the first request message and execute the method in any one of the possible implementation manners in the second aspect above.

[0048] In a twelfth aspect, yet another communication device is provided, 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 listen for paging messages according to the second response message and execute the method in any one of the possible implementation manners in the third aspect above.

[0049] In a thirteenth aspect, still another communication device is provided, 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, and the logic circuit is used to transmit the listening opportunity of paging messages according to the second request message and execute the method in any one of the possible implementation manners in the fourth aspect above. Description of the Drawings

[0050] Figure 1 is a schematic diagram of a system frame;

[0051] Figure 2 is a schematic diagram of power loss of a UE in different states;

[0052] Figure 3 is a schematic diagram of a system architecture for PSM transmission provided by an embodiment of the present application;

[0053] Figure 4 is another schematic diagram of a system architecture for PSM transmission provided by an embodiment of the present application;

[0054] Figure 5 is a schematic flowchart of a method for PSM transmission provided by an embodiment of the present application;

[0055] Figure 6 is a schematic diagram of power loss in different states;

[0056] Figure 7 is a schematic diagram of a system frame provided by an embodiment of the present application;

[0057] Figure 8 is a schematic block diagram of a device for PSM transmission provided by an embodiment of the present application;

[0058] Figure 9 is another schematic block diagram of a device for PSM transmission provided by an embodiment of the present application;

[0059] Figure 10It is a schematic block diagram of yet another device for PSM transmission provided by an embodiment of the present application. Detailed implementation manners

[0060] Next, the technical solutions in the present application will be described with reference to the accompanying drawings.

[0061] For ease of understanding, first, the terms involved in the embodiments of the present application will be briefly introduced.

[0062] 1. Non-terrestrial networks (NTN): The rapid development of information technology has put forward more urgent requirements for the efficiency, mobility, diversity, etc. of communication. Since traditional terrestrial networks cannot provide seamless coverage for user equipment (UE), especially in places where base stations cannot be deployed such as the sea, desert, air, etc., NTN is introduced into the fifth-generation mobile networks (5G). NTN provides seamless coverage for UE by deploying base stations or some base station functions on high-altitude platforms or satellites. Moreover, high-altitude platforms or satellites are less affected by natural disasters, which can improve the reliability of the 5G system.

[0063] 2. 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, flexible networking, etc. It can provide services for both fixed terminals and various mobile terminals.

[0064] 3. Radio resource control (RRC) state: The RRC state includes an idle state (RRC_IDLE), an inactive state (RRC_INACTIVE), and a connected state (RRC_CONNECTED).

[0065] When the UE is in the connected state (RRC_CONNECTED), it can send and receive data from the network, monitor the control signaling indicating control authorization on the shared channel, and can report the channel quality to the network.

[0066] When the UE is in the idle state (RRC_IDLE) or the inactive state (RRC_INACTIVE), it generally turns off the receiver and is in a low-power state. In order to receive the paging message sent by the base station, the UE wakes up from the low-power mode periodically and tries to receive the paging message. The paging message mainly includes a system message change notification or a natural disaster short message alert.

[0067] 4. Discontinuous Reception (DRX): In a cellular system, the 3rd generation partnership project (3GPP) designed the DRX mechanism to reduce the power consumption of the UE. According to the DRX mechanism, when the UE is in the idle state (RRC_IDLE) or the inactive state (RRC_INACTIVE), the UE can receive paging messages periodically according to the DRX information configured by the network.

[0068] The specific time for the UE to receive the paging message is determined by the paging frame (PF) and the paging occasion (PO). The PF represents the frame for sending the paging message, that is, the UE in the idle state (RRC_IDLE) or the inactive state (RRC_INACTIVE) will only attempt to receive the paging message in the PF. The PO represents the occasion for attempting to receive the paging message within a PF. Since the paging message is scheduled by the downlink control information (DCI) scrambled with the paging-radio network temporary identity (P-RNTI), in fact, one PO can correspond to the detection occasions of S DCI scrambled with P-RNTI, where S can be obtained through the system message.

[0069] Figure 1 It is a schematic diagram of a system frame. As Figure 1 shown, a paging cycle includes 16 system frames. The system frame with the system frame number (SFN) of 1 is the paging frame PF. This paging frame PF includes 10 subframes with identifiers from 0 to 9. The paging occasion PO can be located in the subframe with the identifier of 9. The UE can receive the paging message within the PF. Each PF can correspond to multiple POs, but the network does not send paging messages to the UE on every PO.

[0070] The following takes the narrow band internet of things (NB-IoT) as an example to illustrate the method of obtaining the PF and PO.

[0071] Exemplarily, the PF is located in the system frame that satisfies the following formula:

[0072] SFN mod T = (T div N) * (UE_ID mod N)

[0073] Where, mod represents the modulo operation, div represents the integer division operation, SFN represents the system frame number, T represents the DRX cycle, which is a time unit. Exemplarily, it can be 2.56 seconds. It can be understood that the UE can have one or multiple opportunities to attempt to receive paging messages within the time T. N represents the number of PFs included in each DRX cycle. UE_ID is the identifier of the UE, which can be determined based on the international mobile subscriber identity (IMSI). Exemplarily, UE_ID can be calculated by IMSI mod 4096.

[0074] Exemplarily, the position of the PO can be determined based on the following formula:

[0075] I_s = floor(UE_ID / N) mod (Ns)

[0076] Where, floor(·) represents the floor operation, and Ns represents the number of POs included in each PF. Based on the calculated I_s index, the position of the PO can be queried through Table 1.

[0077] Table 1

[0078] 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

[0079] In Table 1, the value of Ns can be 1, 2, or 4, the value of I_s can be 0, 1, 2, or 3, and N / A indicates the non-existence of the PO position. Different values of Ns and I_s correspond to different PO positions. Exemplarily, as can be seen from Table 1, when Ns = 1 and I_s = 0, the PO can be located in the subframe with the identifier 9 as shown in Figure 1 the subframe with the identifier 9 as shown.

[0080] 5. PSM mode: PSM is a new low-power mode introduced in the NB-IoT scenario and belongs to the function of the non-access stratum (NAS), which can be initiated by the UE. In the PSM mode, the UE can enter a long-term deep sleep mode and does not need to periodically listen for paging messages. When PSM is activated, the network cannot contact the UE.

[0081] Figure 2 It is a schematic diagram of the power loss of the UE in different states. Figure 2 In, the abscissa represents time, and the state of the UE also changes with time. The ordinate represents the power loss, and the power loss of the UE in different states is also different. From Figure 2It can be known that the UE starts in the connected state (RRC_CONNECTED). In the connected state, the UE can process uplink and downlink service data. After the UE finishes processing the service data, the RRC connection will be released and it enters the idle state (RRC_IDLE). The idle state corresponds to multiple DRX cycles. Within each DRX cycle, the UE can listen for paging messages, that is, the UE can periodically listen for paging messages in the idle state.

[0082] The idle state corresponds to a timer. Exemplarily, this timer can be the T3324 timer (with a duration of 0 to 255 seconds). After the T3324 timer times out, the UE can enter the PSM mode from the idle state. Therefore, the T3324 timer can also be called the activation timer for 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.

[0083] In a possible implementation manner, the UE can exit the PSM mode after the timer corresponding to the PSM mode times out. Exemplarily, the timer corresponding to the PSM mode can be the T3412 timer. The duration of the T3412 timer can be 6 minutes, 12 minutes or other durations, which are not limited in the embodiments of the present application. The T3412 timer can also be called the tracking area updating (TAU) cycle request timer. After the T3412 timer times out, the UE exits the PSM mode and enters the connected state for TAU. After the TAU ends, if there is no service data to be processed, the UE enters the idle state from the connected state again, and then enters the PSM mode, and so on in a cycle.

[0084] In another possible implementation manner, the UE can actively exit the PSM mode when there is service data to be processed, so as to enter the connected state to process the service data.

[0085] When the UE exits the PSM mode based on any one of the above two possible implementation manners, considering that the satellite platform is moving at a high speed in the NTN scenario, it is very likely that the serving satellite base station of the cell where the UE is located moves to other cells in the future, and other satellite base stations in the satellite topology have not 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, when the UE exits the PSM mode and enters the connected state, it cannot communicate with the satellite base station, that is, the UE exits the PSM mode at the incorrect time, which will cause waste of power consumption.

[0086] In view of this, an embodiment of the present application provides a method for PSM transmission in an NTN scenario. When transmitting PSM, a satellite base station can allocate a wake-up opportunity time period in the PSM mode to a UE. When there is service data to be processed, the UE can temporarily wake up during the wake-up opportunity time period and process the service data during this time period. Since there is a satellite base station communicating with the UE during this wake-up opportunity time period, the UE can wake up during an appropriate time period, which helps to reduce power consumption waste.

[0087] It should be understood that 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 terminal devices, and data transmission between network devices. The embodiments of the present application do not limit this. The embodiments of the present application will be described below according to a first communication device and a second communication device.

[0088] Before introducing the method and device for PSM transmission in the low-power mode provided by the embodiments of the present application, the following points are explained first.

[0089] First, in the embodiments shown below, each term and English abbreviation, such as the PSM mode, wake-up opportunity time period, attachment acceptance message, tracking area update, etc., are all exemplary examples given for the convenience of description and should not constitute any limitation to the present application. The present application does not exclude the possibility of defining other terms in existing or future protocols that can achieve the same or similar functions.

[0090] Second, in the embodiments shown below, the first, second, and various numerical numbers are only for the convenience of description and are not used to limit the scope of the embodiments of the present application. For example, to distinguish different communication devices, etc.

[0091] Third, "at least one" means one or more, and "a plurality" means two or more. "And / or" describes the association relationship of associated objects and indicates that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone, where A and B can be singular or plural. The character " / " generally represents an "or" relationship between the associated objects before and after. "At least one (item)" or its similar expression refers to any combination of these items, including any combination of single (item) or plural items (items). For example, at least one (item) of a, b, and c can represent: a, or b, or c, or a and b, or a and c, or b and c, or a, b, and c, where a, b, and c can be single or multiple.

[0092] Figure 3It 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.

[0093] The second communication device 302 can 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.

[0094] It should be understood that the first communication device can refer to a user equipment, an access terminal, a user unit, a user station, a mobile station, a mobile device, 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 can 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 device with wireless communication function, a computing device, or other processing devices connected to a wireless modem, a vehicle-mounted device, a wearable device, a communication device in a 5G network, or a communication device in a future evolved public land mobile network (PLMN), etc. The embodiments of the present application do not limit this.

[0095] As an example but not a limitation, in the embodiments of the present application, the first communication device can also be a wearable device. A wearable device can also be called a wearable intelligent device, which is a general term for devices developed by applying wearable technology to intelligentize daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is directly worn on the body or integrated into the user's clothes or accessories. A wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable intelligent devices include those with complete functions and large sizes that can realize complete or partial functions without relying on a smart phone, such as smart watches or smart glasses, etc., and those that only focus on a certain type of application function and need to cooperate with other devices such as smart phones, such as various smart bracelets and smart jewelry for physical sign monitoring.

[0096] In addition, in the embodiments of the present application, the first communication device may also be a terminal device in an IoT system. IoT is an important part of the future development of information technology. Its main technical feature is to connect objects to the network through communication technology, thereby realizing an intelligent network of human-machine interconnection and thing-thing interconnection. In the embodiments of the present application, IoT technology can achieve massive connection, deep coverage, and power saving of terminals through, for example, narrowband NB-IoT technology.

[0097] In addition, in the embodiments of the present application, the first communication device may also be a terminal device adopting device-to-device (D2D) communication technology. D2D technology refers to a communication method in which two peer terminal devices directly communicate with each other. In a decentralized network composed of D2D terminal devices, each terminal device node can send and receive signals and has the function of automatic routing (forwarding messages).

[0098] The second communication device may be a base transceiver station (BTS) in a global system for mobile communications (GSM) system or a code division multiple access (CDMA) system, or a NodeB (NB) in a wideband code division multiple access (WCDMA) system, or an IoT base station in an IoT system or an NB-IoT base station in a narrow band internet of things (NB-IoT) system, or an evolved NodeB (eNB or eNodeB) in an LTE system, or a radio controller in a cloud radio access network (CRAN) scenario, or the second communication device may be a relay station, an access point, a vehicle-mounted device, a wearable device, and a communication device in a 5G network or a communication device in a future evolved PLMN network, etc. The embodiments of the present application do not limit this.

[0099] The second communication device in the embodiments of the present application may be a device in a wireless network, such as a radio access network (RAN) node that connects a terminal to the wireless network. Currently, some examples of RAN nodes are: base stations, next-generation base stations gNB, transmission reception points (TRP), evolved Node B (eNB), home base stations, baseband units (BBU), or access points (AP) in a WiFi system, etc. In one network structure, the second communication device may include a centralized unit (CU) node, or a distributed unit (DU) node, or a RAN device including a CU node and a DU node.

[0100] Figure 4 FIG. 400 is a schematic diagram of another system architecture for PSM transmission provided by the embodiments of the present application. It should be understood that system architecture 400 is a more specific description of system architecture 300. Hereinafter, system architecture 400 will be described by taking the first communication device 301 as a terminal device, the second communication device 302 as a 5G satellite base station, and the core network 303 as a 5G core network as an example. As Figure 4 shown, system architecture 400 includes two terminal devices 401, two 5G satellite base stations 402, a ground station 403, and a 5G core network 404. Among them, the 5G core network 404 includes a 5G control plane 405 and a 5G data plane 406.

[0101] Among them, the terminal device 401 may be a device such as a mobile phone or a PAD that supports the 5G new air interface. The terminal device 401 can access the satellite network through the air interface and initiate services such as calls and Internet access.

[0102] The 5G satellite base station 402 mainly provides wireless access services, can schedule wireless resources for the accessed terminal devices, and provide reliable wireless transmission protocols and data encryption protocols.

[0103] The ground station 403 is mainly responsible for forwarding the signaling and service data between the 5G satellite base station 402 and the 5G core network 404.

[0104] The 5G core network 404 is mainly responsible for services such as user access control, mobility management, session management, user security authentication, and charging. The 5G core network 404 is composed of multiple functional units and can be divided into two functional entities: a 5G control plane 405 and a 5G data plane 406.

[0105] The 5G control plane 405 includes a 5G access and mobility management function (AMF) 407 and a 5G session management function (SMF) 408. Among them, the 5G AMF 407 is responsible for user access management, security authentication, and mobility management. The 5G SMF 408 is responsible for interacting with the separated 5G data plane 406, creating, updating, and deleting protocol data unit (PDU) sessions, and managing the session environment with the PDU.

[0106] 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 transmission of user plane data, traffic statistics, and secure eavesdropping.

[0107] The data network 410 can provide 5G UPD 409 with massive and diverse data.

[0108] In the system architecture 400, the 5G new air interface represents the wireless link between the terminal device 401 and the 5G satellite base station 402. The Xn interface represents the interface between the two 5G satellite base stations 402, which is mainly used for signaling interaction such as switching. The NG interface represents the interface between the 5G satellite base station 402 and the 5G core network 404, which is mainly used for interacting the NAS signaling of the 5G core network 404 and the service data of the user.

[0109] The 5G satellite base station 402 can transmit downlink data to the terminal device 401, wherein the data is encoded using 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, and the uplink data can also be encoded using channel coding, and the encoded data is transmitted to the 5G satellite base station 402 after constellation modulation.

[0110] Figure 5 is a schematic flow chart of a method 500 for PSM transmission provided in an embodiment of the present application. The method 500 comprises the following steps:

[0111] S501: A first communication device sends a first request message, where the first request message is used to request to enter a PSM mode. Correspondingly, a second communication device receives the first request message.

[0112] S502: The second communication device sends a first response message, and correspondingly, the first communication device receives the first response message.

[0113] 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 X wake-up occasion time periods of the first communication device in the PSM mode, where X is greater than or equal to 0.

[0114] S503. The first communication device enters the PSM mode based on the first response message.

[0115] In an embodiment of the present application, the first communication device may request to enter the PSM mode from the second communication device. If the second communication device allows the first communication device to enter the PSM mode, the second communication device may indicate to the first communication device to enter the PSM mode through the first indication information, and indicate X wake-up occasion time periods (wakeup occasion window) during which the first communication device can perform data transmission in the PSM mode through the second indication information, where X is greater than or equal to 0.

[0116] It should be understood that the X wake-up occasion 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. After receiving the X wake-up occasion time periods, the first communication base station can then decide whether to wake up from the PSM mode according to the X wake-up occasion 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 reducing power consumption waste.

[0117] As an optional embodiment, when X is greater than 0, the second indication information includes the start time point and end time point of each wake-up occasion time period in the X wake-up occasion time periods, or the start time point and duration of each wake-up occasion time period.

[0118] It should be understood that when X is greater than 0, it means that there is at least one wake-up occasion time period during which the first communication device can wake up in the PSM mode. 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 within the duration of the PSM mode, and the first communication device needs to continue to maintain the PSM mode to save power.

[0119] In an embodiment of the present application, the second indication information may include different forms of wake-up occasion time periods. Exemplarily, the second communication device may indicate the start time point and end time point of each wake-up occasion time period through the second indication information, or indicate the start time point and duration of each wake-up occasion time period.

[0120] Exemplarily, the second communication device may carry the information of the wake-up occasion time periods in the form of a table, and its format is shown in Table 2 or Table 3.

[0121] Table 2

[0122]

[0123] Table III

[0124]

[0125] Among them, the wake-up opportunity information element identifier (IEI) is used to indicate the specific meaning represented by this field. Table II and Table III show the possible carrying forms of one of the X wake-up opportunity time periods. In addition, the X wake-up opportunity time periods can also be shown in the same table, or the X wake-up opportunity time periods can be grouped and shown in different tables. The embodiments of the present application do not limit this.

[0126] As an optional embodiment, after S503, method 500 further includes: if there is service data to be sent by the first communication device, the first communication device sends the service data during the first wake-up opportunity time period among the X wake-up opportunity time periods.

[0127] In the embodiments of the present application, if the first communication device has service data to be processed, the first communication device can select the first wake-up opportunity time period among the X wake-up opportunity time periods to transmit the data. After the end of the first wake-up opportunity time period, the first communication device can continue to enter the PSM mode.

[0128] It should be understood that the first wake-up opportunity time period can be any one of the X wake-up opportunity time periods in the PSM mode, and the embodiments of the present application do not limit this. Of course, in practical applications, the first wake-up opportunity time period must be after the generation of the service data transmission requirement or the TAU update requirement (or other requirements that require waking up). Therefore, strictly speaking, the first wake-up opportunity time period can be any one of the latter X0 wake-up opportunity time periods among the X wake-up opportunity time periods in the PSM mode, and the X0 wake-up opportunity time periods are after the generation of the service data transmission requirement or the TAU update requirement (or other requirements that require waking up). Without affecting the understanding, the present application still uses X as an example for illustration.

[0129] As an optional embodiment, the first response message is an attachment acceptance message or a tracking area update acceptance message.

[0130] In an embodiment of the present application, the first communication device may request to enter the PSM mode from the second communication device through an attach request message or a tracking area update request message during an attach process or a tracking area update (TAU) process. Correspondingly, the second communication device may send an attach acceptance message or a tracking area update acceptance message to the first communication device to indicate that the first communication device enters the PSM mode and indicate the wake-up opportunity time period of the first communication device in the PSM mode.

[0131] As an optional embodiment, method 500 further includes: the first communication device receives information of a first duration, where the first duration is used to indicate the delay time of the PSM mode. S503 includes: after receiving the first response message, the first communication device enters the PSM mode after the first duration.

[0132] In an embodiment of the present application, the first duration is used to indicate the delay time of the PSM mode, that is, the duration from when the first communication device is in the idle state until it enters the PSM mode.

[0133] Exemplarily, the first duration may be the duration of the T3324 timer. The T3324 timer can be regarded as an activation timer for the PSM mode. After the T3324 timer times out, the first communication device may enter the PSM mode.

[0134] As an optional embodiment, method 500 further includes: the first communication device receives information of a second duration, where the second duration is used to indicate the duration of the PSM mode; after entering the PSM mode, the first communication device exits the PSM mode after the second duration.

[0135] In an embodiment of the present application, the second duration is used to indicate the duration of the PSM mode, that is, the duration from when the first communication device is in the idle state until it exits the PSM mode.

[0136] Exemplarily, the second duration may be the duration of the T3412 timer. After the T3412 timer times out, the first communication device may exit the PSM mode.

[0137] It should be understood that if there is a wake-up opportunity time period in the PSM mode, but there is no service data to be processed and the second duration has not ended, the first communication device still does not exit the PSM mode until the second duration ends and then exits the PSM mode.

[0138] Figure 6 is a schematic diagram of power loss in different states provided by an embodiment of the present application. Compared with Figure 1 , Figure 6 there are X wake-up opportunity time periods during the duration of the PSM mode in , where X is greater than or equal to 0.

[0139] After processing the data, the first communication device can enter the idle state, which corresponds to the T3324 timer. After the T3324 timer times out, the first communication device can enter the PSM mode. When there are X wake-up opportunity time periods as shown in the figure in the PSM mode, the first communication device can select one of the X wake-up opportunity time periods for data transmission.

[0140] Exemplarily, when X = 0, that is, the second communication device instructs the first communication device that there is no time period in which it can wake up in the PSM mode, the first communication device does not need to wake up even if there is service data to be processed, and remains in the PSM mode until it exits the PSM mode after the T3412 times out.

[0141] Exemplarily, if there are two wake-up opportunity time periods as shown in the figure in the PSM mode, that is, X = 2, and at time point T1 the first communication device has data service to be processed, but at this time the first wake-up opportunity time period in the PSM mode has not yet arrived, so the first communication device needs to wait for the arrival of the first wake-up opportunity time period. When the first wake-up opportunity time period arrives, the first communication device can process the service data during the first wake-up opportunity time period.

[0142] In addition, the first communication device may not process the service data during the first wake-up opportunity time period, but wait for the arrival of the second wake-up opportunity time period and process the service data during the second wake-up opportunity time period. The embodiments of the present application do not limit this.

[0143] Exemplarily, if there are two wake-up opportunity time periods as shown in the figure in the PSM mode, that is, X = 2, and at time point T2 the first communication device has data service to be processed. At this time, since the first wake-up opportunity time period has passed, but the second wake-up opportunity time period has not yet arrived, the first communication device needs to wait for the arrival of the second wake-up opportunity time period. When the second wake-up opportunity time period arrives, the first communication device can process the service data during the second wake-up opportunity time period.

[0144] Exemplarily, if there are two wake-up opportunity time periods as shown in the figure in the PSM mode, that is, X = 2, and at time point T3 the first communication device has data service to be processed, but at this time the first wake-up opportunity time period and the second wake-up opportunity time period have passed, and there is no wake-up opportunity time period for the first communication device to perform data transmission. Therefore, the first communication device needs to exit the PSM mode and enter the connected state for tracking area update after the T3412 timer times out, and then transfer to the next PSM mode cycle through the idle state, and select the nearest wake-up opportunity time period in the next PSM mode cycle to process the service data.

[0145] When X takes other values, the processing procedure is similar to that when X = 2, and the embodiments of the present application will not elaborate here.

[0146] The above combination Figures 1 - 6 has described in detail the method for PSM transmission provided by the embodiments of the present application. The first communication device can determine the wake-up time period from the PSM mode according to the X wake-up opportunity time periods sent by the second communication device, which helps to reduce the power consumption of the first communication device.

[0147] When the first communication device is in the idle state, the first communication device needs to periodically monitor paging messages according to the 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 geographical location, the first communication device may monitor paging messages according to the originally configured paging period in the case of no serving satellite base station. However, it is not possible to monitor paging messages in each paging period, which will also cause waste of power consumption.

[0148] Exemplarily, an indication of the active cycle of the paging period can be added to the RadioResourceConfigCommonSIB-NB->PCCH-Config-NB field in the SystemInformationBlockType2-NB-

[0149] >RRC message:

[0150]

[0151]

[0152] Among them, SEQUENCE{…} means that it can include all the parameters enumerated later, ENUMERATED{…} means to take one of the parameters enumerated later, and Bit STRING(size(…)) means that the size of the bit string can take one of the parameter ranges enumerated later.

[0153] Exemplarily, radio frame (rf) 128 means there are 128 radio frames. rf 256, rf 512, rf1024 are similar to rf 128 and will not be elaborated here.

[0154] Exemplarily, fourT means 4 paging periods, halfT means half a paging period, one16thT means 1 / 16 of a paging period. The meanings of others such as quarterT are similar to one16thT and will not be elaborated here.

[0155] Exemplarily, r1 represents a repetition of 1 time, r2 represents a repetition of 2 times, and the meanings of others such as r32 are similar to those of r1 and r2, which will not be elaborated here.

[0156] The above "Active_cycle Bit STRING(size(2……maxPeriod_of_cycles))" is an added field, and an indication of the active cycle for the paging cycle can be added in this field. Exemplarily, an active cycle = 010000 can be used in this field to indicate listening for paging messages in the second paging cycle.

[0157] Figure 7 It is a schematic diagram of a system frame provided by an embodiment of the present application. Figure 7 It includes 6 paging cycles, and each paging cycle includes 16 system frames. When using an active cycle = 010000 to indicate listening for paging messages in the second paging cycle, exemplarily, as Figure 7 shown, the system frame with a system frame number of 17 in the second paging cycle is a paging frame PF, and this paging frame PF includes 10 subframes with identifiers from 0 to 9, and the paging occasion PO can be located in the subframe with an identifier of 9.

[0158] Similarly, an active cycle = 001000 can be used to indicate listening for paging messages in the third paging cycle.

[0159] That is to say, which bit from left to right in the active cycle is 1 indicates that the first communication device can listen for paging messages in the corresponding paging cycle.

[0160] Exemplarily, an active cycle = 000010 can also be used to indicate listening for paging messages in the second paging cycle, that is, which bit from right to left in the active cycle indication is 1 indicates that the first communication device can listen for paging messages in the corresponding paging cycle. It should be understood that there can be other activation indications for the paging cycle, and the embodiments of the present application do not limit this.

[0161] In this way, by adding an indication of the active cycle of the paging cycle in the field of the RRC message sent to the first communication device, the first communication device can select the cycle for listening for paging messages according to the active cycle indication, which is beneficial to reducing power consumption waste.

[0162] As described above in combination with Figure 7It is described that the first communication device can select an appropriate paging cycle for listening to paging messages according to the activation period indication. In addition, the first communication device can also stop listening for a period of time according to the indication of the Deactive_window.

[0163] Exemplarily, an indication of the non - active window for the paging cycle can be added to the PCCH - Config - NB field in the RadioResourceConfigCommonSIB - NB of the RRC message:

[0164] >RadioResourceConfigCommonSIB - NB->PCCH - Config - NB field:

[0165]

[0166] Among them, the meanings of SEQUENCE{…}, ENUMERATED{…} and their respective enumerated parameters have been described above and will not be elaborated here. INTEGER represents an integer type and can take one of the parameter ranges enumerated later.

[0167] The above "Deactive_window SEQUENCE{…}" field is a newly added field. An indication for the non - active window (Deactive_window) can be added to this field. After the first communication device stops listening for a period of time based on the indication of this Deactive_window field, it can continue to listen for paging messages according to the original configuration.

[0168] Similar to the DRX configuration, when the first communication device is in the idle state, the first communication device can also periodically listen for paging messages according to the extended discontinuous reception (eDRX) configuration. Similarly, the time period for stopping listening can be indicated according to the indication information.

[0169] Exemplarily, an IE: NB-IoT paging eDRX Information can be carried in a paging message sent by the network to the second communication device. This information contains parameter information for NB-IoT paging eDRX, namely the NB-IoT paging eDRX Cycle, and new fields of the starting time point of the deactivation window (Deactive_Window_Start) and the deactivation duration (Deactive_duration) are added, which are used to indicate the time period during which the first communication device stops listening and is also the time period during which the second communication device stops sending paging messages. As shown in Table IV, the starting time point of stopping listening can be indicated in the "Deactive_Window_Start" field, and the duration of notification listening can be indicated in the "Deactive_duration" field.

[0170] In Table IV, "M" indicates that the corresponding field is mandatory, and "O" indicates that the corresponding field is optional.

[0171] Exemplarily, hf2 represents 2 hyperframes, hf3 represents 3 hyperframes, and the meanings of others such as hf16 are similar to hf2 and will not be elaborated here.

[0172] Exemplarily, s1 represents 1 subframe, s2 represents 2 subframes, and the meanings of others such as s6 are similar to s1 and will not be elaborated here.

[0173] The period T corresponding to the "NB-IoT Paging eDRX Cycle" field eDRX is defined in the standard TS36.304

[20] , and its unit is the number of hyperframes.

[0174] Exemplarily, the first communication device can request eDRX configuration in an attach request message or a tracking area update request message. Correspondingly, the network can carry the eDRX configuration in an attach accept message or a tracking area update accept message and send the eDRX configuration to the first communication device. New fields of the starting time point of the deactivation window (Deactive_Window_Start) and the deactivation duration (Deactive_duration) are added to this eDRX configuration, which are used to indicate the time period of stopping listening. As shown in Table V, the starting time point of stopping listening can be indicated in the "starting time point of the deactivation window", and the duration of stopping listening can be indicated in the "deactivation duration".

[0175] It should be understood that when the network sends the time period for stopping listening to the second communication device, it is also necessary to send the time period for stopping listening to the first communication device through the second communication device, so that the second communication device stops sending paging messages during the time period for stopping listening, and the first communication device stops listening for paging messages during the time period for stopping listening, which is beneficial to the synchronization of information between the first communication device and the second communication device.

[0176] Table IV

[0177]

[0178] Table V

[0179]

[0180] It should be understood that the magnitudes of the sequence numbers of the above processes do not mean the order of execution. The order of execution of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

[0181] In the above, in combination with Figures 3 - 7 , the method for PSM transmission according to the embodiments of the present application has been described in detail. Next, in combination with Figures 8 - 10 will be described in detail the apparatus for PSM transmission according to the embodiments of the present application.

[0182] Figure 8 FIG. 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.

[0183] Among them, the output module 810 is configured to: output a first request message for requesting to enter the PSM mode; the receiving module 820 is configured to: receive a first response message, where the first response message includes first indication information and second indication information, the first indication information is used to indicate that the apparatus enters the PSM mode, and the second indication information is used to indicate X wake-up opportunity time periods of the apparatus in the PSM mode, and X is greater than or equal to 0; the processing module 830 is configured to: enter the PSM mode based on the first response message.

[0184] Optionally, when X is greater than 0, the second indication information includes the start time point and end time point of each wake-up opportunity time period in the X wake-up opportunity time periods, or the start time point and duration of each wake-up opportunity time period.

[0185] Optionally, the output module 810 is configured to: if there is service data to be sent by the apparatus, the apparatus outputs the service data in the first wake-up opportunity time period among the X wake-up opportunity time periods.

[0186] Optionally, the first response message is an attachment acceptance message or a tracking area update acceptance message.

[0187] Optionally, 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, enter the PSM mode after the first duration.

[0188] Optionally, the receiving module 820 is configured to: receive information of a second duration, where 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, exit the PSM mode after the second duration.

[0189] In an optional example, those skilled in the art can understand that the device 800 may specifically be the first communication device in the above embodiments, or the functions of the first communication device in the above embodiments may be integrated in the device 800. The above functions may be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions. For example, the above receiving module 820 may be a communication interface, such as a transceiver interface. The device 800 may be configured to execute each process and / or step corresponding to the first communication device in the above method embodiments.

[0190] Figure 9 FIG. shows a schematic block diagram of another device 900 for PSM transmission provided by an embodiment of the present application. The device 900 includes: a receiving module 910 and an output module 920.

[0191] Wherein, the receiving module 910 is configured to: receive a first request message, where 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, where 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 X wake-up opportunity time periods of the first communication device in the PSM mode, and X is greater than or equal to 0.

[0192] Optionally, when X is greater than 0, the second indication information includes the start time point and end time point of each wake-up opportunity time period in the X wake-up opportunity time periods, or the start time point and duration of each wake-up opportunity time period.

[0193] Optionally, the first response message is an attachment acceptance message or a tracking area update acceptance message.

[0194] Optionally, 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.

[0195] Optionally, 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.

[0196] In an optional example, those skilled in the art can understand that the apparatus 900 may specifically be the second communication apparatus in the foregoing embodiments, or the functions of the second communication apparatus in the foregoing embodiments may be integrated in the apparatus 900. The foregoing functions may be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the foregoing functions. For example, the foregoing receiving module 910 may be a communication interface, such as a transceiver interface. The apparatus 900 may be configured to execute each process and / or step corresponding to the second communication apparatus in the foregoing method embodiments.

[0197] It should be understood that the apparatuses 800 and 900 herein are embodied in the form of functional modules. The term "module" herein 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 of processors, etc.) for executing one or more software or firmware programs, a memory, a combined logic circuit, and / or other suitable components that support the described functions.

[0198] In the embodiments of the present application, the apparatuses 800 and 900 may also be a chip or a chip system, such as: a system on chip (SoC). Correspondingly, the output module 810 may be a transceiver circuit of the chip, which is not limited herein.

[0199] Figure 10 FIG. shows a schematic block diagram of still 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. Among them, 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 configured to execute the instructions stored in the memory 1030 to control the transceiver 1020 to send signals and / or receive signals.

[0200] It should be understood that 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 be used to execute the respective steps and / or processes corresponding to the first communication device or the second communication device in the above method embodiments. Optionally, the memory 1030 may include a read-only memory and a random access memory, and provide instructions and data to the processor. A part of the memory may further include a non-volatile random access memory. For example, the memory may also store information about the device type. The processor 1010 may be used to execute the instructions stored in the memory, and when the processor executes the instructions, the processor may execute the respective steps and / or processes corresponding to the first communication device or the second communication device in the above method embodiments.

[0201] It should be understood that in the embodiments of the present application, the processor 1010 may be a 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 arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0202] In the implementation process, the respective steps of the above method may be completed by the integrated logic circuit in the hardware of the processor or the instructions in the form of software. The steps of the method disclosed in combination with the embodiments of the present application may be directly embodied as being executed and completed by the hardware processor, or executed and completed by the combination of the hardware and software modules in the processor. The software module may be located in a mature storage medium in the art such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory, and the processor executes the instructions in the memory and combines its hardware to complete the steps of the above method. To avoid repetition, it will not be described in detail here.

[0203] The present application further 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 and execute the method in any possible implementation manner in the first aspect above.

[0204] The present application further 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 the PSM according to the first request message and execute the method in any possible implementation manner in the second aspect above.

[0205] The present application also provides 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 listen for a paging message according to the second response message and execute the method in any possible implementation manner in the above-mentioned third aspect.

[0206] The present application also provides yet 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, and the logic circuit is used to transmit the listening opportunity of the paging message according to the second request message and execute the method in any possible implementation manner in the above-mentioned fourth aspect.

[0207] The present application further provides a communication system, which may include the above-mentioned Figure 8 first communication device shown (device 800 is embodied as the first communication device).

[0208] The present application further provides a communication system, which may include the above-mentioned Figure 9 second communication device shown (device 900 is embodied as the second communication device).

[0209] The present application further provides a communication system, which may include the above-mentioned Figure 10 first communication device shown (device 1000 is embodied as the first communication device) or the above-mentioned Figure 10 second communication device shown (device 1000 is embodied as the second communication device).

[0210] Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present application.

[0211] Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments, and will not be elaborated herein.

[0212] In several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling, direct coupling, or communication connection between each other can be through some interfaces. The indirect coupling or communication connection of the devices or units can be in electrical, mechanical, or other forms.

[0213] The units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0214] In addition, in each embodiment of the present application, the functional units can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit.

[0215] If the above functions are implemented in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, or a part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical discs.

[0216] As described above, the above are only the specific implementation manners of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application, and all should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method for listening for paging messages, characterized in that, comprising: A first communication device sends an attachment request message, the attachment request message including a request for discontinuous reception (DRX) configuration; The first communication device receives an attachment acceptance message, the attachment acceptance message including DRX configuration and inactivity period information, the inactivity period information being used to indicate the period for stopping listening for paging messages; The first communication device listens for paging messages according to the DRX configuration and the inactivity period information.

2. The method according to claim 1, characterized in that, The inactivity period information includes an inactivity window start time point and an inactivity duration, the inactivity window start time point being used to indicate the start time point for stopping listening for paging messages, and the inactivity duration being used to indicate the duration for stopping listening for paging messages.

3. The method according to claim 1, characterized in that, The first communication device listens for paging messages according to the DRX configuration and the inactivity period information, including: The first communication device does not listen for paging messages during the inactivity period within the DRX cycle.

4. The method according to any one of claims 1 to 3, characterized in that, The first communication device is a terminal device, or a communication device in the terminal device.

5. A method for listening for paging messages, characterized in that, comprising: A second communication device receives an attachment request message, the attachment request message including a request for discontinuous reception (DRX) configuration; The second communication device sends an attachment acceptance message, the attachment acceptance message including DRX configuration and inactivity period information, the inactivity period information being used to indicate the period for stopping listening for paging messages.

6. The method according to claim 5, characterized in that, The inactivity period information includes an inactivity window start time point and an inactivity duration, the inactivity window start time point being used to indicate the start time point for stopping listening for paging messages, and the inactivity duration being used to indicate the duration for stopping listening for paging messages.

7. The method according to claim 5 or 6, characterized in that, The second communication device is a communication device in the core network, or a communication device in the communication device in the core network.

8. A device for listening for paging messages, characterized in that, comprising: A communication module for sending an attachment request message, the attachment request message including a request for discontinuous reception (DRX) configuration; The communication module for receiving an attachment acceptance message, the attachment acceptance message including DRX configuration and inactivity period information, the inactivity period information being used to indicate the period for stopping listening for paging messages; A processing module for listening for paging messages according to the DRX configuration and the inactivity period information.

9. The device according to claim 8, characterized in that, The inactivity period information includes an inactivity window start time point and an inactivity duration. The inactivity window start time point is used to indicate the start time point for stopping listening for paging messages, and the inactivity duration is used to indicate the duration for stopping listening for paging messages.

10. The apparatus according to claim 8, wherein, the processing module is configured to listen for paging messages according to the DRX configuration and the inactivity period information, including: the processing module is configured not to listen for paging messages during the inactivity period in the DRX cycle.

11. The apparatus according to any one of claims 8 to 10, wherein, the apparatus is a terminal device, or a component or chip in the terminal device.

12. An apparatus for listening for paging messages, wherein, comprising: a communication module, configured to receive an attachment request message, the attachment request message including a request for discontinuous reception DRX configuration; the communication module, configured to send an attachment acceptance message, the attachment acceptance message including a DRX configuration and inactivity period information, the inactivity period information being used to indicate the period for stopping listening for paging messages.

13. The apparatus according to claim 12, wherein, the inactivity period information includes an inactivity window start time point and an inactivity duration. The inactivity window start time point is used to indicate the start time point for stopping listening for paging messages, and the inactivity duration is used to indicate the duration for stopping listening for paging messages.

14. The apparatus according to claim 12 or 13, wherein, the second communication device is a communication device in the core network, or a component or chip in the communication device in the core network.

15. A communication system, wherein, comprising the apparatus according to any one of claims 8 - 11 and the apparatus according to any one of claims 12 - 14.

16. A computer - readable storage medium, wherein, for storing a computer program, the computer program including instructions for implementing the method according to any one of claims 1 - 14.

17. A computer program product, wherein, the computer program product includes computer program code, and when the computer program code runs on a computer, the computer is caused to implement the method according to any one of claims 1 - 14.

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