Paging method and communication device

Abstract

Disclosed are a paging method and a communication device, the method relating to the technical field of communications, the method comprising: a first network device obtaining first information, the first information being determined based on a coverage window set and an extended discontinuous reception eDRX parameter, the coverage window set comprising one or more coverage windows, the coverage window is a time period when the terminal equipment is in network coverage; the first network device receives a first paging message from the core network device; and in a first paging time window, the first network device sends a second paging message to the terminal device, and the first paging time window is determined based on the first information. Based on the method, the paging time window and the coverage window can be aligned, the network device pages the terminal device in the paging time window aligned with the coverage window, and the situation that the terminal device monitors the paging message in a scene without network coverage, and power consumption is wasted can be avoided.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a paging method and a communication device. Background Art

[0002] In the long term evolution (LTE) system or the new radio (NR) system, the paging message is used to notify the terminal device in the idle or inactive state to establish a service (i.e., be called), or to notify the terminal device that the system message has changed and the terminal device needs to re-read the changed system broadcast message, or to notify the terminal device to receive the earthquake and tsunami warning system (ETWS) information.

[0003] When the terminal device is in idle or inactive state, it will wake up in the set time unit according to the discontinuous reception (DRX) cycle to monitor whether the network device is paging itself. In order to further save power consumption, the extended DRX (eDRX) technology can be used to allow the terminal device to enter the sleep state for a longer time. Considering that a long sleep time may introduce errors, in order to improve the reliability of paging, the concept of paging time window (PTW) is also introduced, such as Figure 1 As shown, within an eDRX cycle, the terminal device needs to monitor paging according to the DRX cycle within the PTW.

[0004] Due to the limited number of satellite deployments in the early commercial period, there may be scenarios with non-terrestrial network (NTN) non-continuous coverage, such as Figure 2 As shown, since satellite 1 is constantly moving, different geographical areas are covered in different time periods, and correspondingly, different other geographical areas are not covered. For example, at 10:15, geographical area 2 has network coverage, while geographical area 1 and geographical area 3 do not have network coverage. Furthermore, in geographical area 2, the time that the terminal device is covered by the network (or the satellite available time) is also limited. The time that the terminal device is covered by the network can be called a coverage window, and the duration of the coverage window depends on the minimum elevation angle and the constellation, and the duration ranges from a few seconds to a few minutes. If there are multiple satellite orbits, or there are multiple satellites on the orbit, then for the terminal device, there will be multiple coverage windows within a period of time, and the intervals between the multiple coverage windows may not be equal.

[0005] Since the durations of the multiple overlay windows may be unequal, and the intervals between the multiple overlay windows may be unequal, while the PTW is usually periodic and has equal durations, there may be misalignment between the overlay window and the PTW. Figure 3 As shown, PTW1 is within the time corresponding to overlay window 1, and PTW2 is not within the time corresponding to overlay window 2. Therefore, the terminal device will not be able to monitor the paging message of the network device on PTW2. How to align the overlay window with PTW is a technical problem that needs to be solved urgently. Summary of the invention

[0006] The present application provides a paging method and a communication device, which can align a coverage window with a paging time window.

[0007] In a first aspect, the present application provides a paging method, applied to a first network device, the method comprising: obtaining first information, the first information being determined based on a coverage window set and extended discontinuous reception eDRX parameters, the coverage window set comprising one or more coverage windows, the coverage window being a time period in which a terminal device is under network coverage; receiving a first paging message from a core network device; and sending a second paging message to the terminal device within a first paging time window, the first paging time window being determined based on the first information.

[0008] Based on the method described in the first aspect, the first network device can determine the paging time window aligned with the coverage window through the first information. The first network device can page the terminal device within the paging time window aligned with the coverage window, which can avoid the terminal device listening to paging messages in a scenario without network coverage, thereby wasting power consumption.

[0009] In a possible implementation manner, there is an overlapping portion between the first paging time window and a coverage window in a coverage window set of the terminal device.

[0010] In a possible implementation, the first information includes first time information and an offset table, the first time information indicates time unit information of one or more paging time windows in a first paging time window set, the first paging time window set is determined based on eDRX parameters, and the offset table includes one or more offset time units corresponding to one or more paging time windows. Based on this implementation, a paging time window aligned with a coverage window can be determined through the first time unit and the offset table, thereby avoiding the terminal device from listening to a paging message when there is no network coverage, wasting the power consumption of the terminal device, and also avoiding the lack of paging opportunities within the coverage window.

[0011] In a possible implementation, the first information includes the time unit information of the second paging time window, the eDRX cycle, the bitmap and the offset table, the offset table includes one or more offset time units corresponding to one or more paging time windows, the one or more paging time windows include the second paging time window, the bitmap, the eDRX cycle and the second paging time window are used to determine the paging time windows other than the second paging time window in the one or more paging time windows. Based on this implementation, the paging time window aligned with the coverage window can be determined, so as to avoid the terminal device from listening to the paging message when there is no network coverage, which wastes the power consumption of the terminal device and also avoids the lack of paging opportunities in the coverage window. The eDRX cycle, the bitmap and the second paging time window are used to determine the time unit where the paging time window other than the second paging time window in one or more paging time windows is located, which is conducive to saving resource overhead.

[0012] In a possible implementation manner, the offset time unit is determined according to the coverage window set and the first time information.

[0013] In one possible implementation, after receiving a paging message from a core network device, the method further includes: determining a third paging time window, the first time information including time unit information of the third paging time window; and determining the first paging time window based on the offset time unit corresponding to the third paging time window in the offset table.

[0014] In a possible implementation, the first information includes time unit information of a paging time window in a second paging time window set, the second paging time window set is determined based on a coverage window set and an eDRX parameter, there is an overlapping portion between each paging time window in the second paging time window set and a coverage window in the coverage window set, and the first paging time window belongs to the second paging time window set. Based on this implementation, a paging time window aligned with a coverage window can be directly determined from the second paging time window set, which is beneficial to reducing power consumption required for device computing.

[0015] In a possible implementation, the first information is obtained by: receiving the first information from a first device, the first device is a terminal device, a second network device and a device in a core network device, and the second network device is the last network device to establish a connection with the terminal device.

[0016] In a possible implementation manner, the first information is obtained, and the specific implementation manner is: determining the first information; sending a release message to the terminal device, wherein the release message carries the first information.

[0017] In a possible implementation manner, before determining the first information, the method further includes: receiving an eDRX parameter sent from a core network device.

[0018] In a possible implementation, the first paging message includes a tracking area identifier TAI list, and the TAI corresponding to the geographical location covered by the satellite associated with the first network device within the first paging time window is a TAI in the TAI list. Based on this implementation, the first network device can page the terminal device within the first paging time window.

[0019] In a second aspect, the present application provides a paging method applied to a terminal device, the method comprising: obtaining first information, the first information being determined based on a coverage window set and extended discontinuous reception eDRX parameters, the coverage window set comprising one or more coverage windows, the coverage window being a time period in which the terminal device is under network coverage; receiving a second paging message from a first network device within a first paging time window, the first paging time window being determined based on the first information.

[0020] Among them, the beneficial effects corresponding to the second aspect can be found in the description corresponding to the above-mentioned first aspect, and will not be repeated here.

[0021] In a possible implementation manner, there is an overlapping portion between the first paging time window and the first coverage window in the coverage window set of the terminal device.

[0022] In one possible implementation, the first information includes first time information and an offset table, the first time information indicates time unit information of one or more paging time windows in a first paging time window set, the first paging time window set is determined based on eDRX parameters, and the offset table includes one or more offset time units corresponding to one or more paging time windows.

[0023] In one possible implementation, the first information includes time unit information, a bitmap, an eDRX cycle and an offset table of the second paging time window, the offset table includes one or more offset time units corresponding to one or more paging time windows, one or more paging time windows include the second paging time window, and the bitmap, eDRX cycle and the second paging time window are used to determine the paging time windows other than the second paging time window in the one or more paging time windows.

[0024] In a possible implementation manner, the offset time unit is determined according to the coverage window set and the first time information.

[0025] In one possible implementation, before receiving the second paging message from the first network device, the method also includes: determining a third paging time window, the first time information including time unit information of the third paging time window; and determining the first paging time window based on the offset time unit corresponding to the third paging time window in the offset table.

[0026] In one possible implementation, the first information includes time unit information of the paging time window in the second paging time window set, the second paging time window set is determined based on the coverage window set and the eDRX parameters, there is an overlapping part between each paging time window in the second paging time window set and the coverage window in the coverage window set, and the first paging time window belongs to the second paging time window set.

[0027] In one possible implementation, the first information is obtained, and the specific implementation method is: receiving the first information from the second device, the second device is a core network device or a third network device, the third network device is the last network device to establish a connection with the terminal device, and the third network device is the first network device or the second network device.

[0028] In one possible implementation, the first information is obtained, and the specific implementation method is: determine the first information; send the first information to the second device, the second device is a core network device or a third network device, the third network device is the last network device to establish a connection with the terminal device, and the third network device is the first network device or the second network device.

[0029] In a possible implementation manner, the first information is obtained, and a specific implementation manner is: based on a preset wake-up time, the first information is periodically obtained.

[0030] In a third aspect, the present application provides a paging method, the method comprising: receiving a first paging message from a core network device, the first paging message carrying a first time offset value; sending a second paging message to a terminal device within a first paging time window, the first paging time window being determined based on the second paging time window and a first coverage window, the second paging time window being determined based on an extended discontinuous reception eDRX parameter, the first coverage window being a time period in which the terminal device is under network coverage, and the time interval between the first paging time window and the second paging time window being less than the first time offset value.

[0031] Based on the method corresponding to the third aspect, the first paging time window aligned with the first coverage window can be obtained by moving the position of the second paging time window, and the first paging time window enables the terminal device to monitor the paging message when there is network coverage. The time interval between the first paging time window and the second paging time window is limited by the first time offset value, which is conducive to avoiding the first paging time window from overlapping with other paging time windows.

[0032] In a possible implementation manner, there is an overlapping portion between the first paging time window and the first coverage window.

[0033] In a possible implementation manner, the first time offset value is a difference between an eDRX cycle length and a paging time window length.

[0034] In a possible implementation manner, the starting position of the first paging time window is located in the time unit where the starting position of the first covering window is located.

[0035] In a possible implementation manner, the first paging message includes a tracking area identification code TAI list, and the TAI corresponding to the geographical location covered by the satellite associated with the first network device in the first paging time window is a TAI in the TAI list.

[0036] In a fourth aspect, the present application provides a paging method, the method comprising: receiving a non-access layer NAS signaling from a core network device, the NAS signaling carrying a first time offset value; receiving a second paging message from a first network device within a first paging time window, the first paging time window being determined based on the second paging time window and the first coverage window, the second paging time window being determined based on an extended discontinuous reception eDRX parameter, the first coverage window being a time period in which the terminal device is under network coverage, and the time interval between the first paging time window and the second paging time window being less than the first time offset value.

[0037] Among them, the beneficial effects corresponding to the fourth aspect can be found in the description corresponding to the above-mentioned first aspect, and will not be repeated here.

[0038] In a possible implementation manner, there is an overlapping portion between the first paging time window and the first coverage window.

[0039] In a possible implementation manner, the starting position of the first paging time window is located in the time unit where the starting position of the first covering window is located.

[0040] In a possible implementation manner, the first time offset value is a difference between an eDRX cycle length and a paging time window length.

[0041] In a possible implementation manner, receiving a second paging message from the first network device within the first paging time window is specifically implemented as follows:

[0042] When there is an overlapping part between the first time period and the first coverage window, a first paging time window is determined, the start time of the first time period is the start time of the second paging time window, and the end time of the first time period is determined based on the start time of the second paging time window and the first time offset value; within the first paging time window, a second paging message from the first network device is received.

[0043] In a possible implementation manner, the method further includes: when there is no overlapping portion between the first time period and any cover window in the cover window set of the terminal device, not monitoring the paging message.

[0044] In one possible implementation, when there is no overlap between the first time period and any covering window in the covering window set of the terminal device, the paging message is not monitored. The specific implementation is: when there is no overlap between the first time period and any covering window in the covering window set of the terminal device, and the next paging time window of the second paging time window overlaps with a covering window in the covering window set, the paging message is not monitored in the first paging time window.

[0045] In a fifth aspect, the present application provides a communication device, wherein the communication device may also be a chip system. The communication device may execute the method described in the first aspect or the third aspect. The functions of the communication device may be implemented by hardware, or by hardware executing corresponding software implementations. The hardware or software includes one or more units or modules corresponding to the above functions. The unit or module may be software and / or hardware. The operations and beneficial effects performed by the communication device may refer to the methods and beneficial effects described in the first aspect or the third aspect above, and the repetitive parts will not be repeated.

[0046] In a sixth aspect, the present application provides a communication device, wherein the communication device may also be a chip system. The communication device may execute the method described in the second aspect or the fourth aspect. The functions of the communication device may be implemented by hardware, or by hardware executing corresponding software implementations. The hardware or software includes one or more units or modules corresponding to the above functions. The unit or module may be software and / or hardware. The operations and beneficial effects performed by the communication device may refer to the methods and beneficial effects described in the second aspect or the fourth aspect above, and the repetitive parts will not be repeated.

[0047] In a seventh aspect, the present application provides a communication device, comprising a processor, and when the processor calls a computer program in a memory, the method as described in any one of the first aspect or the second aspect and its possible implementation method are executed.

[0048] In a possible implementation, the communication device further includes a memory, and the memory and the processor are coupled to each other. Optionally, the memory and the processor are integrated together.

[0049] In a possible implementation manner, the communication device further includes a transceiver, and the transceiver is used to send and receive data and / or signaling.

[0050] In an eighth aspect, the present application provides a communication device, which includes a processor and an interface circuit, wherein the interface circuit is used to receive signals from other communication devices outside the communication device and transmit them to the processor or send signals from the processor to other communication devices outside the communication device, and the processor is used to implement the method as described in any one of the first aspect to the fourth aspect and its possible implementation method through a logic circuit or execution code instructions.

[0051] In a ninth aspect, the present application provides a computer-readable storage medium, in which a computer program or instruction is stored. When the computer program or instruction is executed by a communication device, any one of the methods in the first to fourth aspects and its possible implementation methods are implemented.

[0052] In the tenth aspect, an embodiment of the present application provides a computer program or a computer program product, including codes or instructions. When the codes or instructions are executed on a computer, the computer executes the method described in any one of the first aspect to the fourth aspect and its possible implementation method.

[0053] In an eleventh aspect, an embodiment of the present application provides a communication system, which includes the communication device described in the fifth aspect and the communication device described in the sixth aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 A schematic diagram of an eDRX cycle provided in an embodiment of the present application;

[0055] Figure 2 A schematic diagram of satellite movement provided in an embodiment of the present application;

[0056] Figure 3 A schematic diagram of a coverage window and a paging time window provided in an embodiment of the present application;

[0057] Figure 4 A schematic diagram of a communication system provided in an embodiment of the present application;

[0058] Figure 5 A schematic diagram of a paging method provided in an embodiment of the present application;

[0059] Figure 6 A schematic diagram of misalignment between the coverage window and the paging time window provided in an embodiment of the present application;

[0060] Figure 7 A schematic diagram of alignment of a coverage window and a paging time window provided in an embodiment of the present application;

[0061] Figure 8 A schematic diagram of aligning a paging time window with a coverage window provided in an embodiment of the present application;

[0062] Fig. 9 A schematic diagram of another paging time window alignment coverage window provided in an embodiment of the present application;

[0063] Fig.10 A schematic diagram of another paging time window alignment coverage window provided in an embodiment of the present application;

[0064] Fig.11 A flowchart of another paging method provided in an embodiment of the present application;

[0065] Fig.12 A schematic diagram of another paging time window alignment coverage window provided in an embodiment of the present application;

[0066] Fig.13 is a structural diagram of a communication device provided in an embodiment of the present application;

[0067] Fig.14 is a structural diagram of another communication device provided in an embodiment of the present application;

[0068] Fig.15 It is a schematic diagram of the structure of a chip provided in an embodiment of the present application. DETAILED DESCRIPTION

[0069] The terms "first" and "second" and the like in the specification, claims and drawings of this application are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products or devices.

[0070] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0071] In the present application, "at least one (item)" means one or more, "more than one" means two or more, "at least two (items)" means two or three and more than three, and "and / or" is used to describe the corresponding relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. "At least one of the following items" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0072] The following is an introduction to the system architecture of the embodiment of the present application:

[0073] To facilitate understanding of the technical solution of the embodiment of the present application, the system architecture of the method provided by the embodiment of the present application is briefly described below. It is understandable that the system architecture described in the embodiment of the present application is to more clearly illustrate the technical solution of the embodiment of the present application, and does not constitute a limitation on the technical solution provided by the embodiment of the present application.

[0074] It should be understood that the technical solution of the present application can be applied to non-terrestrial networks (NTN) or scenarios where NTN is integrated with terrestrial networks (TN). The technical solution of the present application can adopt long-term evolution (LTE) access technology, fifth-generation mobile communication (5G) access technology, and access technology evolved after 5G, for example, sixth-generation mobile communication (6G) access technology, etc.

[0075] The following introduces the basic architecture of the communication system provided by the embodiments of the present application. Figure 4is an example of a communication system applicable to an embodiment of the present application. The communication system provided in the present application may include a wireless access network and a core network. Among them, the wireless access network may include at least one network device and at least one terminal device, and the terminal device may be a cellular phone, a smart phone, a portable computer, a handheld communication device, a handheld computing device, a satellite radio device, a global positioning system, a personal digital assistant (PDA) or any other suitable device for communicating on a wireless communication system. The core network includes at least one core network device. The terminal device is connected to the network device wirelessly, and the network device is connected to the core network wirelessly or by wire. The terminal devices can be connected to each other by wire or wirelessly. Figure 4 This is just a schematic diagram. The communication system may also include other devices, such as wireless relay devices and wireless backhaul devices. Figure 4 Not drawn in.

[0076] The terminal device mentioned in the embodiments of the present application may also be referred to as a terminal, which may be a device with wireless transceiver functions, and may specifically refer to user equipment (UE), access terminal, subscriber unit, user station, mobile station, remote station, remote terminal, mobile device, user terminal, wireless communication equipment, user agent or user device. The terminal device may also be a satellite phone, a cellular phone, a smart phone, a wireless data card, a wireless modem, a machine type communication device, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a PDA, a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a communication device carried on a high-altitude aircraft, a wearable device, a drone, a robot, a terminal in device-to-device communication (D2D), a terminal in vehicle to everything (V2X), a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in self driving, a wireless terminal in remote medical, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a smart home, etc. The present application does not limit the wireless terminal in the home or the terminal device in the future communication network. In addition, in the present application, when not specifically stated, "terminal device" can refer to the terminal device itself or a component in the terminal device, such as a chip system, SoC, which can be installed in the terminal device.

[0077] The network device in this application has a wireless transceiver function and is used to communicate with the terminal. Specifically, it may refer to a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next generation base station (next generation NodeB, gNB) in a 5G mobile communication system, a next generation base station in a sixth generation (6th generation, 6G) mobile communication system, an access network device or a module of an access network device in an open access network (open RAN, ORAN) system, a base station in a future mobile communication system, or an access node in a WiFi system, etc. The network device may also be a module or unit that can implement some functions of a base station. For example, the network device may be a centralized unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU) described below. Among them, in the ORAN system, CU can also be called O-CU, DU can also be called open (open, O)-DU, CU-CP can also be called O-CU-CP, CU-UP can also be called O-CUP-UP, and RU can also be called O-RU. Exemplarily, the base station in the embodiment of the present application may include various forms of base stations, such as: macro base stations, micro base stations (also called small stations), relay stations, access points, next generation base stations (gNodeB, gNB), transmission and receiving points (transmitting and receiving point, TRP), transmitting points (transmitting point, TP), mobile switching centers, and can also be devices that undertake wireless access functions in device-to-device (D2D), vehicle-to-everything (V2X), machine-to-machine (machine-to-machine, M2M) communications, and Internet of Things (Internet of Things) communications. In addition, in this application, unless otherwise specified, "network device" may refer to the network device itself or a component in the network device, such as a chip system, a system-on-a-chip (SOC), which may be installed in the network device.

[0078] As an example and not a limitation, in an embodiment of the present application, the network device may have a mobile characteristic, for example, the network device may be a mobile device. In some embodiments, the network device may be a satellite or a balloon station. For example, the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, etc.

[0079] The core network device in the embodiment of the present application may correspond to different devices in different systems. For example, in 3G, it may correspond to the serving GPRS support node (SGSN) of the general packet radio service (GPRS) and / or the gateway support node (GGSN) of GPRS; in 4G, it may correspond to the mobility management entity (MME) and / or the serving gateway (S-GW); in 5G, it may correspond to the access and mobility management function (AMF), the user plane function (UPF) or the session management function (SMF). It should be noted that the above-mentioned core network device may also be referred to as a functional network element or a core network element. In a 5G communication system, each functional network element may be the name of each functional network element described above. In a communication system evolved after 5G (such as a 6G communication system), each functional network element may still be the name of each functional network element described above, or may have other names. For example, in a 5G communication system, the user plane function may be UPF. In a communication system that evolves after 5G (such as a 6G communication system), the user plane function may still be UPF, or may have other names, which is not limited in this application.

[0080] In order to better understand the embodiments of the present application, the following first introduces the relevant concepts involved in the embodiments of the present application:

[0081] 1. Paging Message

[0082] Paging messages are used to notify terminal devices in idle or inactive states to establish services (i.e., be called), or to notify terminal devices that system messages have changed and that the terminal devices need to re-read the changed system broadcast messages, or to notify terminal devices to receive earthquake and tsunami warning system (ETWS) information.

[0083] 2. Paging time window (PTW)

[0084] In the extended discontinuous reception (eDRX) technology, within an eDRX cycle, a terminal device needs to monitor paging messages according to the discontinuous reception (DRX) cycle within a time period, and the time period is called a paging time window.

[0085] 3. Coverage Window

[0086] The coverage window refers to the time period when the terminal device is covered by the network. Among them, non-terrestrial networks (NTN) are an important part of the fifth generation (5G) and future wireless communication networks. They use transmission equipment such as airborne or satellite-borne aircraft as networks or network segments of relay nodes or base stations. Since the position of the satellite is constantly moving, at a point in time a satellite can only cover the network in one area, and other areas will not be covered. Therefore, the terminal equipment in one area may only be covered by the network for part of the time within a period of time, and this part of the time period can be called a coverage window. In the early commercial period, the limited number of satellite deployments may result in NTN discontinuous coverage scenarios.

[0087] The coverage window can also be defined by an unavailability period, that is, the coverage window can be called an unavailability period. That is, a period of time during which the terminal device is unreachable can be called an unavailability period.

[0088] Based on the above description of the paging time window and the overlay window, in the scenario of multiple satellites, since the orbit and movement speed of each satellite may be different, the duration of multiple overlay windows of the terminal device may not be equal, and the interval duration between multiple overlay windows may not be equal. The paging time window is usually periodic and of equal time length. There may be a misalignment between the overlay window and the paging time window, that is, the overlay window and the paging time window do not overlap at all. The terminal device will not be able to monitor the paging message in the paging time window that is not aligned with the overlay window, wasting power consumption. Therefore, how to align the overlay window and the paging time window is a technical problem that needs to be solved urgently.

[0089] In order to align the coverage window with the paging time window, the present application embodiment proposes a paging method, such as Figure 5 As shown, the paging method includes steps 501 to 504, wherein the execution order of step 501 and step 502 is not limited. Figure 5 The execution entities corresponding to the method shown are the terminal device, the first network device and the core network device. Or, Figure 5 The execution subject of the method shown may be a terminal device, a first network device, and a chip in a core network device. Figure 5 The terminal device, the first network device and the core network device are used as examples for explanation. The embodiment of the present application does not limit the execution subject of the paging method. The terminal device can be Figure 4 The terminal device shown in the figure, the first network device can be Figure 4 The network device shown in FIG. 1 may be a core network device. Figure 4 The core network equipment shown in Figure 1. Among them:

[0090] 501. The terminal device obtains first information.

[0091] 502. The first network device obtains first information.

[0092] In an embodiment of the present application, the first information obtained by the terminal device and the first network device is the same. The first information is determined based on a coverage window set and an eDRX parameter, and the coverage window set includes one or more coverage windows, and the coverage window is a time period when the terminal device is covered by the network. The eDRX parameter corresponds to a first paging time window set, and the first paging time window set includes multiple paging time windows, and there may be a situation where some paging time windows and coverage windows are not aligned in the multiple paging time windows. If the terminal device monitors on the part of the paging time window, it may not receive the paging message due to the lack of network coverage, thereby wasting the power consumption of the terminal device. Optionally, the eDRX parameter may include one or more of the parameters such as the eDRX cycle and the paging time window length, and the eDRX parameter can be used to determine the paging time window in the first paging time window set described above, including the time unit where the paging time window starting position is located, and the frame number corresponding to the paging time window starting position in the time unit. Further optionally, the time unit can be a paging hyperframe (PH).

[0093] Optionally, the coverage window set is obtained by negotiation and confirmation between the terminal device and the core network device, and the coverage window set can be confirmed by the terminal device or the core network device according to the location information of the terminal device and the ephemeris information of the satellite. Optionally, the eDRX parameters can also be obtained by negotiation between the terminal device and the core network device. In the process of negotiating the eDRX parameters and / or the coverage window set between the terminal device and the core network device, it is obtained through non-access stratum (NAS) signaling interaction.

[0094] Based on the coverage window set and eDRX parameters, one or more paging time windows in the paging time window set corresponding to the eDRX parameters are aligned with the coverage window. It can also be understood as moving the one or more paging time windows to overlap with the coverage windows in the coverage window set. The role of the first information is to assist the terminal device and the network device to determine the paging time window aligned with the coverage window, thereby avoiding the terminal device from listening to the paging message in the absence of network coverage, wasting the power consumption of the terminal device, and also avoiding the lack of paging opportunity in the coverage window.

[0095] The paging time window and the overlay window described in the embodiment of the present application are not aligned, which may mean that the paging time window and the overlay window do not overlap. For example, Figure 6 As shown, in a completely non-overlapping scenario, the start time and the end time of the paging time window are not within the time range corresponding to the coverage window.

[0096] The paging time window and the overlay window described in the embodiments of the present application are aligned, which may refer to the paging time window and the overlay window overlapping, and the overlap may refer to complete overlap or partial overlap. Figure 7 As shown, full overlap means that when the time lengths corresponding to the overlay window and the paging time window are the same, the start time and end time of the overlay window and the paging time window are the same. Partial overlap includes three situations. In the situation corresponding to partial overlap 1, the time length corresponding to the overlay window is less than the time length corresponding to the paging time window, and the start time and end time of the overlay window are both within the range corresponding to the paging time window; in the situation corresponding to partial overlap 2, the time length corresponding to the overlay window is greater than the time length corresponding to the paging time window, and the start time and end time of the paging time window are within the time range corresponding to the overlay window. The situation corresponding to partial overlap 3 may refer to the staggered overlap between the paging time window and the overlay window, Figure 7 The staggered overlap shown in the figure is that the end time of the paging time window is within the time range corresponding to the covering window, while the start time of the paging time window is not within the time range corresponding to the covering window. The staggered overlap may also include that the start time of the paging time window is within the time range corresponding to the covering window, and the end time of the paging time window is not within the time range corresponding to the covering window.

[0097] By adjusting the position of the paging time window that is not aligned with the coverage window, the paging time window is aligned with the coverage window, so that the terminal device can monitor the paging message in a scenario with network coverage.

[0098] It should be noted that the paging time window and the coverage window are not aligned, which may also refer to the overlapping between the paging time window and the coverage window as described above, such as Figure 7 In this case, the paging time window and the overlay window are aligned, which can refer to the following three modes: the start time and the end time of the paging time window are both within the time range corresponding to the overlay window (the time length corresponding to the paging time window is less than the overlay window), such as Figure 7 or, the start time and end time of the coverage window are both within the time range corresponding to the paging time window (the time length corresponding to the paging time window is greater than the coverage window), such as Figure 7 Alternatively, the paging time window and the coverage window completely overlap (the time lengths corresponding to the coverage window and the paging time window are the same), as shown in FIG. Figure 7 By adjusting the position of the paging time window that overlaps with the coverage window, the paging time window is aligned with the coverage window in one of the three ways described above, which is conducive to increasing the time that the terminal device is in network coverage in the paging time window.

[0099] In a possible implementation manner, the first information obtained by the terminal device and the first network device may be in one of the following three forms:

[0100] 1. The first information includes the first time information and the offset table.

[0101] The first time information indicates time unit information of one or more paging time windows in the first paging time window set, the first paging time window set is determined based on the eDRX parameter, and the offset table includes one or more offset time units corresponding to the one or more paging time windows.

[0102] The first paging time window set determined based on the eDRX parameter may include multiple paging time windows, and the multiple paging time windows include a part of the paging time windows that do not overlap or align with the coverage window. The function of the offset time unit in the offset table is to move the paging time window by the length corresponding to the offset time unit corresponding to it, so as to align with the coverage window. The paging time window and the offset time unit are in one-to-one correspondence.

[0103] Exemplarily, the first time information includes the time unit where the paging time window 1 is located and the time unit where the paging time window 2 is located, and the offset table includes the offset time units corresponding to the paging time window 1 and the paging time window 2, respectively. The offset table may be shown in Table 1:

[0104] Table 1

[0105] Paging time window Offset time unit Paging time window 1 Offset time unit 1 Paging time window 2 Offset time unit 2

[0106] like Figure 8 As shown, after the paging time window 1 is offset based on the offset time unit 1, the obtained paging time window 1' can be aligned with the cover window 1, that is, there is an overlap between the paging time window 1' and the cover window 1. After the paging time window 2 is offset based on the offset time unit 2, the obtained paging time window 2' can be aligned with the cover window 2, that is, there is an overlap between the paging time window 2' and the cover window 2.

[0107] Among them, Table 1 is only an example of an offset table. The offset table can also arrange the corresponding offset time units according to the sequence of time units where the paging time window is located. The terminal device and the network device can determine the offset time unit corresponding to the paging time window according to the sequence and from the offset table. The embodiment of the present application does not limit the specific form of the offset table.

[0108] Optionally, the offset time unit is determined based on the coverage window set and the first time information. The specific method for determining the offset time unit may be to determine the coverage window 1 from the coverage window set based on the time unit information where the paging time window 1 is located. Further optionally, the coverage window 1 may be the coverage window closest to the paging time window 1 in the coverage window set, the paging time window 1 is a paging time window in the first paging time window set, and the paging time window 1 does not overlap or align with any coverage window in the coverage window set; the offset time unit corresponding to the paging time window 1 is determined to be the time interval between the paging time window 1 and the coverage window 1. The time interval is the interval between the start time of the paging time window 1 and the start time of the coverage window 1.

[0109] The time unit information of the paging time window described in the embodiment of the present application includes the time unit information of the starting position of the paging time window. Optionally, the time unit information of the paging time window includes the PH of the starting position of the paging time window or the PH of the paging frame (PF), and the time unit corresponding to the offset time unit may be a system hyperframe number (Hyper System Frame Number, H-SFN) or a system frame number (System Frame Number, SFN).

[0110] Based on this implementation method, the paging time window aligned with the coverage window can be determined through the first time unit and the offset table, thereby avoiding the terminal device from listening to the paging message when there is no network coverage, wasting the power consumption of the terminal device, and also avoiding the lack of paging opportunities within the coverage window.

[0111] 2. The first information includes the time unit information of the second paging time window, the eDRX cycle, the bitmap and the offset table.

[0112] The offset table includes one or more offset time units corresponding to one or more paging time windows respectively, the one or more paging time windows include a second paging time window, and the eDRX cycle, the bitmap and the second paging time window are used to determine the paging time windows other than the second paging time window in the one or more paging time windows.

[0113] The one or more paging time windows are determined based on the eDRX parameters, the interval between any two paging time windows among the one or more paging time windows is an integer multiple of the eDRX cycle, and the one or more paging time windows do not overlap or align with the coverage window. The offset table includes one or more offset time units corresponding to the one or more paging time windows, and the one or more paging time windows can be aligned with the coverage window after being offset according to the time unit in which the paging time windows are located and the one or more offset time units corresponding to the paging time windows. The paging time windows and the offset time units are in one-to-one correspondence.

[0114] The second paging time window is one of the one or more paging time windows, and the time unit where the paging time windows other than the second paging time window in the one or more paging time windows are located needs to be determined according to the second paging time window and the bitmap. Optionally, the determination method may be as follows: the bitmap includes N bits, wherein N is a positive integer, and when the i-th bit in the bitmap is a specific value, it indicates that the offset table includes the offset time unit corresponding to the paging time window corresponding to the i-th bit, and the specific value may be 0 or 1, and the time interval between the paging time window corresponding to the i-th bit and the second paging time window is i eDRX cycles, and i is a positive integer less than or equal to N. The time interval between the paging time window corresponding to the i-th bit and the second paging time window may refer to the time interval between the start time of the paging time window corresponding to the i-th bit and the start time of the second paging time window. Further optionally, one or more paging time windows in the offset table are arranged based on the order of the paging time windows.

[0115] Exemplarily, the first information includes the time unit, bitmap and offset table where paging time window 1 is located. The paging time window 1 can be understood as the second paging time window described above, which is used to determine other paging time windows in combination with the bitmap. The specific value is set to 1, and the bitmap is 1010, that is, the offset table includes the paging time windows corresponding to the first bit and the third bit in the bitmap, and the paging time window corresponding to the first bit in the bitmap is named paging time window 2, and the paging time window corresponding to the third bit is named paging time window 3. The positional relationship between paging time window 1, paging time window 2 and paging time window 3 can be as follows: Fig. 9 The offset table includes the offset time units corresponding to the three paging time windows in sequence, and the offset table can be shown in the following Table 2:

[0116] Table 2

[0117] Serial number Offset time unit 1 Offset time unit 1 2 Offset time unit 2 3 Offset time unit 3

[0118] Among them, in the offset table, the paging time window with a front time unit position is sorted before the paging time window with a back time unit position, so it can be obtained that paging time window 1, paging time window 2 and paging time window 3 correspond to offset time unit 1, offset time unit 2 and offset time unit 3 respectively. After paging time window 1 is offset based on offset time unit 1, the obtained paging time window 1' can be aligned with overlay window 1, that is, there is an overlapping part between paging time window 1' and overlay window 1. After paging time window 2 is offset based on offset time unit 2, the obtained paging time window 2' can be aligned with overlay window 2, that is, there is an overlapping part between paging time window 2' and overlay window 2. After paging time window 3 is offset based on offset time unit 3, the obtained paging time window 3' can be aligned with overlay window 3, that is, there is an overlapping part between paging time window 3' and overlay window 3.

[0119] It should also be noted that the time unit information and the offset time unit of the paging time window here are the same as those described above and will not be repeated here.

[0120] Based on this implementation, a paging time window aligned with the coverage window can be determined, thereby avoiding the terminal device from monitoring the paging message when there is no network coverage, and avoiding no opportunity to paging within the coverage window. The eDRX cycle, the bitmap and the second paging time window are used to determine the time unit where the paging time window other than the second paging time window is located in one or more paging time windows, which is conducive to saving resource overhead.

[0121] 3. The first information includes the time unit information of the paging time window in the second paging time window set.

[0122] The second paging time window set is determined based on the coverage window set and the eDRX parameter, each paging time window in the second paging time window set has an overlapping portion with a coverage window in the coverage window set, and the first paging time window belongs to the second paging time window set.

[0123] There is an overlap between each paging time window in the second paging time set and the covering window in the covering window set, that is, it can also be understood that each paging time window in the second paging time window set is aligned with the covering window. Optionally, a paging time window in the second paging time window set is aligned with a covering window, and different paging time windows correspond to different covering windows.

[0124] Optionally, the second paging time window can be determined by: determining a first paging time window set according to eDRX parameters, determining one or more paging time windows in the first paging message based on a coverage window set, wherein the one or more paging time windows do not overlap or align with any coverage window in the coverage window set, and moving the time unit where the one or more paging time windows are located based on the coverage window set to obtain a second paging time window set, wherein each paging time window in the second paging time set has an overlapping part with a coverage window in the coverage window set.

[0125] For example, Fig.10 As shown, the paging time window 1 and the paging time window 2 can be determined by the eDRX parameters. Since the paging time window 1 and the paging time window 2 are not aligned with the overlay window, the positions of the paging time window 1 and the paging time window 2 can be moved based on the overlay window set. The paging time window 1 is moved based on the overlay window 1 to obtain the paging time window 1', which is aligned with the overlay window 1. The paging time window 2 is moved based on the overlay window 2 to obtain the paging time window 2', which is aligned with the overlay window 2. Therefore, based on this method, a second paging time window set can be obtained, and the second paging time window set includes the paging time window 1' and the paging time window 2'.

[0126] Based on this implementation, a paging time window aligned with the coverage window can be directly determined from the second paging time window set, which is beneficial to reducing power consumption required for device calculation.

[0127] In a possible implementation manner, the terminal device and the first network device may obtain the first information in the following three ways:

[0128] Method 1: A third network device determines the first information based on an eDRX parameter and a coverage window set, and the third network device is the last network device to establish a connection with the terminal device.

[0129] Among them, after the third network device determines the first information, the third network device sends a release message to the terminal device, and the corresponding terminal device receives the release message from the third network device, and the release message carries the first information. Optionally, the release message can be a Radio Resource Control Release (RRCRelease) message. The third network device is the first network device or the second network device, and the second network device is not the first network device. Optionally, when the third network device is the second network device, the second network device sends the first information to the first network device, and correspondingly, the first network device receives the first information from the second network device.

[0130] Based on this implementation, the first information is determined by the network device, which can save the overhead of the terminal device. At the same time, the network device can also configure the first information more flexibly according to the terminal device.

[0131] It should also be noted that, since the coverage window set and eDRX parameters are obtained by negotiation between the terminal device and the core network device through NAS signaling, the third network device is not aware of the coverage window set and eDRX parameters. Optionally, the coverage window set can be determined by the third network device based on the location ephemeris information of the terminal device, or the coverage window set can also be sent by the core network device. Optionally, the eDRX parameter can be sent by the core network device to the third network device, and further optionally, the eDRX parameter can be carried in the core network assistance information for RRC_INACTIVE, or in other existing signaling, or in a new signaling.

[0132] Method 2: The terminal device determines the first information based on the eDRX parameters and the coverage window set.

[0133] Wherein, after the terminal device determines the first information based on the eDRX parameter and the coverage window set, the terminal device sends the first information to the third network device, and the third network device is the last network device to establish a connection with the terminal device. The third network device is the first network device or the second network device, and the second network device is not the first network device. Optionally, when the third network device is the second network device, the second network device sends the first information to the first network device, and correspondingly, the first network device receives the first information from the second network device.

[0134] Based on this implementation, the first information is determined by the terminal device, which can save the overhead of the network device.

[0135] Method three: The first information is determined by negotiation between the terminal device and the core network device.

[0136] The subject of determining the first information may be a terminal device or a core network device. Optionally, the core network device may be an AMF network element.

[0137] Optionally, the entity that triggers the negotiation between the terminal device and the core network device can be a terminal device or a third network device, wherein the third network device is the last network device to establish a connection with the terminal device, the third network device is the first network device or the second network device, and the second network device is not the first network device.

[0138] When the subject triggering the negotiation is a terminal device, the terminal device can actively send NAS signaling to the core network through a third network device when it determines that it is about to leave the network coverage area, so as to trigger the negotiation with the core network device.

[0139] When the subject that triggers the negotiation is a third network device, the third network device can send information to the core network device to indicate that it is about to disconnect from the terminal device, and request the core network device and the terminal device to negotiate and determine the first information. Alternatively, the third network device can send information to the terminal device to instruct the terminal device to negotiate and determine the first information with the core network device.

[0140] Optionally, after the terminal device and the core network device negotiate and determine that the first information is complete, the device that triggers the third network device to release the terminal device to a non-connected state can be a terminal device or a core network device. That is, after determining the first information, the terminal device or the core network device actively sends the first information to the third network device and instructs the third network device to release the connection. Further optionally, when the third network device is a second network device, the second network device sends the first information to the first network device, and correspondingly, the first network device receives the first information from the second network device.

[0141] Based on this implementation method, different devices can be triggered to negotiate and determine the first information through the core network device and the terminal device, so that the first information can be determined more timely. At the same time, triggering the network device to release the connection through different devices is also conducive to the network device to release the terminal device in time and put the terminal device into an idle state.

[0142] Optionally, the first information of the terminal devices in an area is the same. Since the positions and ephemeris information of the terminal devices in an area are the same, the obtained coverage windows are also the same. When the eDRX parameters are the same, the first information obtained by the terminal devices in an area is the same. Therefore, the first information of one terminal device can be determined in an area, and other terminal devices can directly use the first information. Based on this method, the overhead of repeatedly calculating the first information can be reduced.

[0143] In a possible implementation, the terminal device periodically obtains the first information based on a preset wake-up time. The specific method for obtaining the first information can be referred to the above description and will not be described in detail here. Optionally, the preset wake-up time can be the time interval between the first paging time window and the last paging time window that can be indicated by the first information, that is, after the last paging time window that can be indicated by the first information, the terminal device will establish a connection with the network device to re-acquire the first information.

[0144] In which, when the first information includes first time information and an offset table, the first paging time window indicated by the first information refers to the earliest paging time window in the first time information, and the last paging time window indicated by the first information refers to the latest paging time window in the first time information.

[0145] When the first information includes the time unit information, eDRX cycle, bitmap and offset table of the second paging time window, the first paging time window indicated by the first information is the second paging time window, and the last paging time window indicated by the first information refers to the paging time window corresponding to the bit whose last value is a specific value in the bitmap.

[0146] In the case where the first information includes the time unit information of the paging time windows in the second paging time window set, the first paging time window indicated by the first information refers to the earliest paging time window in the second paging time window set, and the last paging time window indicated by the first information refers to the latest paging time window in the second paging time window set.

[0147] Based on this implementation method, it is beneficial for the terminal device to update the first information in a timely manner.

[0148] 503. The core network device sends a first paging message to the first network device. Correspondingly, the first network device receives the first paging message from the core network device.

[0149] In the embodiment of the present application, the first paging message sent by the core network device to the first network device is used to instruct the first network device to page the terminal device. Therefore, when the first network device receives the first paging message, it will determine a paging window for paging according to the first information. Optionally, the first paging message can be an NG Application Protocol (NGAP) paging message.

[0150] In a possible implementation, the first paging message includes a Tracking Area Identification (TAI) list, and the TAI corresponding to the geographical location covered by the satellite associated with the first network device in the first paging time window is a TAI in the TAI list. Therefore, based on this implementation, the network device can page the terminal device in the first paging time window.

[0151] 504. Within the first paging time window, the first network device sends a second paging message to the terminal device. Correspondingly, the terminal device receives the second paging message sent by the first network device.

[0152] In the embodiment of the present application, the first paging time window is determined based on the first information, wherein there is an overlapping portion between the first paging time window and a covering window in the covering window set, that is, the first paging time window is aligned with a covering window in the covering window set. The first information assists the terminal device and the first network device to determine the paging time window aligned with the covering window, so that the terminal device can monitor the paging message under network coverage.

[0153] In combination with the above three forms of the first information, a method for determining the first paging time window is described below:

[0154] Method 1: When the first information includes the first time information and the offset table, the method for determining the first paging time window can be: determining the third paging time window, the first time information includes the time unit information of the third paging time window; determining the first paging time window based on the offset time unit corresponding to the third paging time window in the offset table.

[0155] The third paging time window may be determined according to the eDRX parameter time. Optionally, the time unit where the first paging time window is located may be the time unit where the third paging time window is located plus or minus the offset time unit corresponding to the third paging time window.

[0156] Method 2: When the first information includes the time unit information of the second paging time window, the eDRX cycle, the bitmap and the offset table, the method for determining the first paging time window can be: determining a third paging time window, the time interval between the third paging time window and the second paging time window is an integer multiple of the eDRX cycle, and the offset table includes the offset time unit corresponding to the third paging time window; determining the first paging time window based on the offset time unit corresponding to the third paging time window in the offset table.

[0157] Among them, the third paging time window is determined based on the eDRX parameters. Optionally, when the i-th bit in the bitmap is a specific value, it means that the offset table includes the offset time unit corresponding to the paging time window corresponding to the i-th bit, and the time interval between the paging time window corresponding to the i-th bit and the second paging time window is i eDRX cycles. Therefore, the specific implementation method of determining that the offset time unit corresponding to the third paging time window is included in the offset table can be: determine that the time interval between the third paging time window and the second paging time window is M eDRX cycles, M is a positive integer, and if the value corresponding to the M-th bit in the bitmap is a specific value, it can be determined that the offset time unit corresponding to the third paging time window is determined from the offset table.

[0158] Mode three: when the first information includes the time unit information of the paging time window in the second paging time window set, the method for determining the first paging time window may be: determining the first paging time window from the second paging time window set.

[0159] Optionally, the first paging time window may be a paging time window in the second paging time window set that is closest to the current time, and the current time may refer to the time when the network device receives the first paging message, or the time when the terminal device determines to monitor the paging message.

[0160] In summary, the three methods described above can enable the terminal device and the first network device to determine a paging time window that is aligned with the coverage window, so that the terminal device can monitor the paging message under network coverage.

[0161] In order to align the coverage window with the paging time window, the present application embodiment proposes a paging method, such as Fig.11 As shown, the paging method includes steps 1101 to 1103, wherein the execution order of step 1101 and step 1102 may not be limited. Fig.11 The execution entities corresponding to the method shown are the terminal device, the first network device and the core network device. Or, Fig.11 The execution subject of the method shown may be a terminal device, a first network device, and a chip in a core network device. Fig.11 The terminal device, the first network device and the core network device are used as examples for explanation. The embodiment of the present application does not limit the execution subject of the paging method. The terminal device can be Figure 4 The terminal device shown in the figure, the first network device can be Figure 4 The network device shown in FIG. 1 may be a core network device. Figure 4 The core network equipment shown in Figure 1. Among them:

[0162] 1101. The core network device sends a NAS signaling to the terminal device. Correspondingly, the terminal device receives the NAS signaling, which carries a first time offset value.

[0163] In the embodiment of the present application, the core network device sends NAS signaling to the terminal device through the network device, and the terminal device also receives NAS signaling from the core network device through the network device. The network device can be the first network device or other network devices, and the embodiment of the present application does not limit this.

[0164] 1102. The core network device sends a first paging message to the first network device. Correspondingly, the first network device receives the first paging message from the core network device. The first paging message carries a first time offset value.

[0165] In the embodiment of the present application, the first paging message sent by the core network device to the first network device is used to instruct the first network device to page the terminal device. Therefore, after receiving the first paging message, the first network device will determine a paging window for paging according to the first information. Optionally, the first paging message can be an NGAP paging message.

[0166] In a possible implementation, the first paging message includes a TAI list, and the TAI corresponding to the geographical location covered by the satellite associated with the first network device in the first paging time window is a TAI in the TAI list. Therefore, based on this implementation, the network device can page the terminal device in the first paging time window.

[0167] Among them, the first time offset value sent by the core network device to the terminal device through NAS signaling and the first time offset value sent by the core network device to the first network device through the first paging message are the same. Since the paging time window determined according to the eDRX parameters may not be aligned with the coverage window, the terminal device can align the position of the paging time window with the coverage window by moving the position of the paging time window, so that the terminal device can monitor the paging message in the case of network coverage. The role of the first time offset value is to limit the moving distance of the paging time window, that is, the moving distance of the paging time window cannot exceed the first time offset value. Optionally, the first time offset value is the difference between the eDRX cycle length and the paging time window length. Based on this method, it can be avoided that in order to align the paging time window with the coverage window, the paging time window moves too long and overlaps with other paging time windows.

[0168] 1103. Within the first paging time window, the first network device sends a second paging message to the terminal device, and correspondingly, the terminal device receives the second paging message from the first network device.

[0169] In an embodiment of the present application, the first paging time window is determined based on the second paging time window and the first coverage window, the second paging time window is determined based on the eDRX parameter, the first coverage window is the time period when the terminal device is under network coverage, and the time interval between the first paging time window and the second paging time window is less than the first time offset value.

[0170] Among them, the second paging time window is determined based on the eDRX parameter, and the second paging time window is not aligned or overlapped with any covering window in the covering window set of the terminal device, and the first covering window is a covering window in the covering window set of the terminal device. The first covering window is a covering window selected from the covering window set based on the second paging time window. Optionally, the first covering window is the paging time window with the smallest interval with the second paging time window in the covering window set. Further optionally, the first covering window is the paging time window with the smallest interval with the second paging time window in the covering window set after or before the second paging time window. The first paging time window can be a paging time window obtained by moving the position of the second paging time window to align with the first covering window. Optionally, the starting position of the first paging time window is located in the time unit where the starting position of the first covering window is located.

[0171] Based on this method, the first paging time window aligned with the first coverage window can be obtained by moving the position of the second paging time window, and the first paging time window enables the terminal device to monitor the paging message when there is network coverage. Among them, the time interval between the first paging time window and the second paging time window is less than the first time offset value, and optionally, the first time offset value is the difference between the eDRX cycle length and the paging time window length. Limiting the time interval between the first paging time window and the second paging time window by the first time offset value is conducive to avoiding the first paging time window from overlapping with other paging time windows.

[0172] Among them, the coverage window set and eDRX parameters are Figure 5 The coverage window set described in the corresponding embodiment is the same as that of eDRX, and will not be described in detail here. The paging time window and the coverage window are aligned and the paging time window and the coverage window are not aligned. Figure 5 The same as described in the corresponding embodiments is omitted here.

[0173] In one possible implementation, a specific implementation method for a terminal device to receive a second paging message from a first network device within a first paging time window may be, when there is an overlap between the first time period and the first coverage window, determining the first paging time window, the start time of the first time period being the start time of the second paging time window, and the end time of the first time period being determined based on the start time of the second paging time window and the first time offset value; and receiving the second paging message from the first network device within the first paging time window. The end time of the first time period may be the time obtained by adding the start time of the second paging time window to the eDRX cycle. Optionally, the first coverage window is within the first time period, such as Fig.12As shown, the first time period refers to the period between t0 and t1, where t0 is the start time of the second paging time window, t1 is equal to T plus t0, and T is the eDRX cycle. It can be seen that the first coverage window is located in the first time period, and the second paging time window is moved to obtain the first paging time window aligned with the first coverage window. It can be seen that the first paging time window is located in the first time period and will not overlap with other paging time windows. Based on this implementation, it is helpful to avoid the first paging time window from overlapping with other paging time windows.

[0174] Optionally, when condition 1 is met, the paging message is not monitored, and the condition 1 is that there is no overlap between the first time period and any of the coverage windows in the coverage window set of the terminal device. The condition 1 can be understood as there is no coverage window in the first time period. Since there is no coverage window in the first time period, it is impossible to move the second paging time window within the range of the first time offset value to obtain a paging time window aligned with the coverage window, so there is no need to monitor the paging message. Based on this method, it is beneficial to save power consumption of the terminal device.

[0175] Further optionally, when conditions 1 and 2 are met, the paging message is not monitored, and condition 2 is that the next paging time window of the second paging time window overlaps with a coverage window in the coverage window set. Among them, the next paging time window of the second paging time window can be understood as a paging time window that is separated from the second paging time window by an eDRX cycle after the second paging time window. When a coverage window of the next paging time window of the second paging time window overlaps, it means that the next paging time window of the second paging time window is aligned with a coverage window. The terminal device does not need to move the second paging time window, and can directly monitor the paging message in the next paging time window. Based on this method, it is beneficial to save the power consumption of the terminal device.

[0176] In order to implement the functions of the method provided in the above embodiment of the present application, the terminal device and the network device may include a hardware structure and / or a software module, and implement the above functions in the form of a hardware structure, a software module, or a hardware structure plus a software module. Whether a function of the above functions is executed in the form of a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application and design constraints of the technical solution.

[0177] See also Fig.13 , Fig.13 The structure diagram of a communication device of an embodiment of the present application is shown. The communication device may be a terminal device or a network device. In a possible implementation, the communication device may include executing the above Figure 5 or Fig.11The module or unit corresponding to the method / operation / step / action executed by the terminal device or the first network device in the method embodiment shown may be a hardware circuit, software, or a combination of hardware circuit and software.

[0178] Fig.13 The communication device shown may include a processing unit 1301 and a communication unit 1302. The processing unit 1301 is used to perform data processing. The communication unit 1302 integrates a receiving unit and a sending unit. The communication unit 1302 may also be called a transceiver unit. Alternatively, the communication unit 1302 may also be split into a receiving unit and a sending unit.

[0179] Fig.13 The communication device shown may be a network device, or a device that can be used in conjunction with a network device. The communication device may also be a chip system.

[0180] The communication device is used to perform the above Figure 5 When part or all of the functions of the first network device in the described method embodiment are implemented, the processing unit 1301 is used to obtain first information, where the first information is determined based on a coverage window set and extended discontinuous reception eDRX parameters, where the coverage window set includes one or more coverage windows, and the coverage window is a time period when the terminal device is under network coverage; the communication unit 1302 is used to receive a first paging message from a core network device; the communication unit 1302 is also used to send a second paging message to the terminal device within the first paging time window, where the first paging time window is determined based on the first information.

[0181] In a possible implementation manner, there is an overlapping portion between the first paging time window and a coverage window in a coverage window set of the terminal device.

[0182] In one possible implementation, the first information includes first time information and an offset table, the first time information indicates time unit information of one or more paging time windows in a first paging time window set, the first paging time window set is determined based on eDRX parameters, and the offset table includes one or more offset time units corresponding to one or more paging time windows.

[0183] In one possible implementation, the first information includes time unit information of the second paging time window, an eDRX cycle, a bitmap and an offset table, the offset table includes one or more offset time units corresponding to one or more paging time windows, one or more paging time windows include the second paging time window, the eDRX cycle, the bitmap and the second paging time window are used to determine the paging time windows other than the second paging time window in the one or more paging time windows.

[0184] In a possible implementation manner, the offset time unit is determined according to the coverage window set and the first time information.

[0185] In one possible implementation, after the communication unit 1302 receives a paging message from the core network device, the processing unit 1301 is also used to: determine a third paging time window, the first time information includes time unit information of the third paging time window; determine the first paging time window based on the offset time unit corresponding to the third paging time window in the offset table.

[0186] In one possible implementation, the first information includes time unit information of the paging time window in the second paging time window set, the second paging time window set is determined based on the coverage window set and the eDRX parameters, there is an overlapping part between each paging time window in the second paging time window set and the coverage window in the coverage window set, and the first paging time window belongs to the second paging time window set.

[0187] In one possible implementation, when the processing unit 1301 obtains the first information, the processing unit 1301 receives the first information from the first device by calling the communication unit 1302, where the first device is a terminal device, a second network device and one of the core network devices, and the second network device is the last network device to establish a connection with the terminal device.

[0188] In a possible implementation, the processing unit 1301 obtains the first information, and the processing unit 1301 is specifically used to determine the first information; the communication unit 1302 is also used to send a release message to the terminal device, and the release message carries the first information.

[0189] In a possible implementation, before the processing unit 1301 determines the first information, the communication unit 1302 is further configured to receive an eDRX parameter sent from a core network device.

[0190] In a possible implementation manner, the first paging message includes a tracking area identification code TAI list, and the TAI corresponding to the geographical location covered by the satellite associated with the first network device in the first paging time window is a TAI in the TAI list.

[0191] The communication device is used to perform the above Fig.11In the described method embodiment, when part or all of the functions of the first network device are implemented, the communication unit 1302 is used to receive a first paging message from a core network device, and the first paging message carries a first time offset value; the communication unit 1302 is also used to send a second paging message to the terminal device within the first paging time window, the first paging time window is determined based on the second paging time window and the first coverage window, the second paging time window is determined based on the extended discontinuous reception eDRX parameter, the first coverage window is the time period when the terminal device is under network coverage, and the time interval between the first paging time window and the second paging time window is less than the first time offset value.

[0192] In a possible implementation manner, there is an overlapping portion between the first paging time window and the first coverage window.

[0193] In a possible implementation manner, the first time offset value is a difference between an eDRX cycle length and a paging time window length.

[0194] In a possible implementation manner, the starting position of the first paging time window is located in the time unit where the starting position of the first covering window is located.

[0195] In a possible implementation manner, the first paging message includes a tracking area identification code TAI list, and the TAI corresponding to the geographical location covered by the satellite associated with the first network device in the first paging time window is a TAI in the TAI list.

[0196] Fig.13 The communication device shown may be a terminal device, or a device that can be used in conjunction with the terminal device. The communication device may also be a chip system.

[0197] The communication device is used to perform the above Figure 5 In the described method embodiment, when part or all of the functions of the terminal device are implemented, the processing unit 1301 is used to obtain first information, where the first information is determined based on a coverage window set and extended discontinuous reception eDRX parameters, where the coverage window set includes one or more coverage windows, and the coverage window is a time period when the terminal device is under network coverage; the communication unit 1302 is used to receive a second paging message from a first network device within a first paging time window, where the first paging time window is determined based on the first information.

[0198] In a possible implementation manner, there is an overlapping portion between the first paging time window and the first coverage window in the coverage window set of the terminal device.

[0199] In one possible implementation, the first information includes first time information and an offset table, the first time information indicates time unit information of one or more paging time windows in a first paging time window set, the first paging time window set is determined based on eDRX parameters, and the offset table includes one or more offset time units corresponding to one or more paging time windows.

[0200] In one possible implementation, the first information includes time unit information of the second paging time window, an eDRX cycle, a bitmap and an offset table, the offset table includes one or more offset time units corresponding to one or more paging time windows, one or more paging time windows include the second paging time window, the eDRX cycle, the bitmap and the second paging time window are used to determine the paging time windows other than the second paging time window in the one or more paging time windows.

[0201] In a possible implementation manner, the offset time unit is determined according to the coverage window set and the first time information.

[0202] In one possible implementation, before the communication unit 1302 receives the second paging message from the first network device, the processing unit 1301 is used to: determine a third paging time window, the first time information includes time unit information of the third paging time window; determine the first paging time window based on the offset time unit corresponding to the third paging time window in the offset table.

[0203] In one possible implementation, the first information includes time unit information of the paging time window in the second paging time window set, the second paging time window set is determined based on the coverage window set and the eDRX parameters, there is an overlapping part between each paging time window in the second paging time window set and the coverage window in the coverage window set, and the first paging time window belongs to the second paging time window set.

[0204] In one possible implementation, when the processing unit 1301 obtains the first information, the processing unit 1301 calls the communication unit 1302 to receive the first information from the second device, the second device is a core network device or a third network device, the third network device is the last network device to establish a connection with the terminal device, and the third network device is the first network device or the second network device.

[0205] In one possible implementation, when the processing unit 1301 obtains the first information, the processing unit 1301 is used to determine the first information; the communication unit 1302 is also used to send the first information to the second device, the second device is a core network device or a third network device, the third network device is the last network device to establish a connection with the terminal device, and the third network device is the first network device or the second network device.

[0206] In a possible implementation, when the processing unit 1301 obtains the first information, the processing unit 1301 calls the communication unit 1302 to periodically obtain the first information based on a preset wake-up time.

[0207] The communication device is used to perform the above Fig.11 When some or all of the functions of the terminal device in the described method embodiment are implemented, the communication unit 1302 is used to receive non-access layer NAS signaling from the core network device, and the NAS signaling carries a first time offset value. The communication unit 1302 is also used to receive a second paging message from the first network device within the first paging time window. The first paging time window is determined based on the second paging time window and the first coverage window. The second paging time window is determined based on the extended discontinuous reception eDRX parameter. The first coverage window is the time period when the terminal device is covered by the network. The time interval between the first paging time window and the second paging time window is less than the first time offset value.

[0208] In a possible implementation manner, there is an overlapping portion between the first paging time window and the first coverage window.

[0209] In a possible implementation manner, the starting position of the first paging time window is located in the time unit where the starting position of the first coverage window is located.

[0210] In a possible implementation manner, the first time offset value is a difference between an eDRX cycle length and a paging time window length.

[0211] In one possible implementation, when the communication unit 1302 receives a second paging message from the first network device within the first paging time window: the communication unit 1302 is used to determine the first paging time window when there is an overlapping part between the first time period and the first coverage window, the start time of the first time period is the start time of the second paging time window, and the end time of the first time period is determined based on the start time of the second paging time window and the first time offset value; within the first paging time window, receive the second paging message from the first network device.

[0212] In a possible implementation, the processing unit 1301 is further configured to not monitor the paging message when there is no overlapping portion between the first time period and any coverage window in the coverage window set of the terminal device.

[0213] In one possible implementation, the processing unit 1301 does not monitor the paging message when there is no overlapping part between the first time period and any covering window in the covering window set of the terminal device. The processing unit 1301 is used to not monitor the paging message in the first paging time window when there is no overlapping part between the first time period and any covering window in the covering window set of the terminal device, and the next paging time window of the second paging time window overlaps with a covering window in the covering window set.

[0214] Fig.14 A structural diagram of another communication device is given. The communication device 1400 may be a terminal device in the above method embodiment, or may be a chip, a chip system, or a processor that supports the terminal device to implement the above method. The communication device may be used to implement the method described in the above method embodiment, and the details may refer to the description in the above method embodiment.

[0215] Alternatively, the communication device 1400 may be the first network device in the above method embodiment, or may be a chip, a chip system, or a processor that supports the first network device to implement the above method. The communication device may be used to implement the method described in the above method embodiment, and the details may refer to the description in the above method embodiment.

[0216] The communication device 1400 may include one or more processors 1401. The processor 1401 may be a general-purpose processor or a dedicated processor, etc. For example, it may be a baseband processor or a central processing unit. The baseband processor may be used to process the communication protocol and communication data, and the central processing unit may be used to control the communication device (such as a base station, a baseband chip, a terminal, a terminal chip, a DU or a CU, etc.), execute a software program, and process the data of the software program.

[0217] Optionally, the communication device 1400 may include one or more memories 1402, on which instructions 1404 may be stored, and the instructions may be executed on the processor 1401, so that the communication device 1400 performs the method described in the above method embodiment. Optionally, data may also be stored in the memory 1402. The processor 1401 and the memory 1402 may be provided separately or integrated together.

[0218] Optionally, the communication device 1400 may further include a transceiver 1405 and an antenna 1406. The transceiver 1405 may be referred to as a transceiver unit, a transceiver, or a transceiver circuit, etc., for implementing a transceiver function. The transceiver 1405 may include a receiver and a transmitter, the receiver may be referred to as a receiver or a receiving circuit, etc., for implementing a receiving function; the transmitter may be referred to as a transmitter or a transmitting circuit, etc., for implementing a transmitting function.

[0219] The communication device 1400 is a terminal device: the processor 1401 is used to perform the data processing operation of the terminal device in the above method embodiment. The transceiver 1405 is used to perform the data transceiving operation of the terminal device in the above method embodiment.

[0220] Alternatively, the communication device 1400 is a first network device: the processor 1401 is used to perform the data processing operation of the first network device in the above method embodiment. The transceiver 1405 is used to perform the data transceiving operation of the first network device in the above method embodiment.

[0221] In another possible design, the processor 1401 may include a transceiver for implementing the receiving and sending functions. For example, the transceiver may be a transceiver circuit, or an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing the receiving and sending functions may be separate or integrated. The above-mentioned transceiver circuit, interface, or interface circuit may be used for reading and writing code / data, or the above-mentioned transceiver circuit, interface, or interface circuit may be used for transmitting or delivering signals.

[0222] In another possible design, optionally, the processor 1401 may store an instruction 1403, and the instruction 1403 runs on the processor 1401, so that the communication device 1400 can execute the method described in the above method embodiment. The instruction 1403 may be solidified in the processor 1401, in which case the processor 1401 may be implemented by hardware.

[0223] In another possible design, the communication device 1400 may include a circuit that can implement the functions of sending or receiving or communicating in the aforementioned method embodiments. The processor and transceiver described in the embodiments of the present application can be implemented in an integrated circuit (IC), an analog IC, a radio frequency integrated circuit (RFIC), a mixed signal IC, an application specific integrated circuit (ASIC), a printed circuit board (PCB), an electronic device, etc.

[0224] The communication device described in the above embodiments may be a terminal device or a first network device, but the scope of the communication device described in the embodiments of the present application is not limited thereto, and the structure of the communication device may not be limited thereto. Fig.14 The communication device may be an independent device or may be part of a larger device. For example, the communication device may be:

[0225] (1) Independent integrated circuit IC, or chip, or chip system or subsystem;

[0226] (2) having a set of one or more ICs, and optionally, the IC set may also include a storage component for storing data and instructions;

[0227] (3) ASIC, such as modem (Mobile Station Modem, MSM);

[0228] (4) Modules that can be embedded in other devices;

[0229] (5) Receivers, terminals, smart terminals, cellular phones, wireless devices, handheld devices, mobile units, vehicle-mounted devices, first network devices, cloud devices, artificial intelligence devices, etc.;

[0230] (6)Others

[0231] For the case where the communication device may be a chip or a chip system, see Fig.15 Schematic diagram of the chip structure shown. Fig.15 The chip shown includes a processor 1501 and an interface 1502. Optionally, it may also include a memory 1503. The number of the processor 1501 may be one or more, and the number of the interface 1502 may be multiple.

[0232] In one design, for a case where a chip is used to implement the functions of a terminal device in an embodiment of the present application:

[0233] The interface 1502 is used to input or output signals;

[0234] The processor 1501 is used to execute the data processing operation of the terminal device in the above method embodiment.

[0235] In another design, for the case where the chip is used to implement the function of the first network device in the embodiment of the present application:

[0236] The interface 1502 is used to input or output signals;

[0237] The processor 1501 is used to execute the data processing operation of the first network device in the above method embodiment.

[0238] It is understandable that some optional features in the embodiments of the present application may be implemented independently in certain scenarios without relying on other features, such as the solution on which they are currently based, to solve corresponding technical problems and achieve corresponding effects, or may be combined with other features according to needs in certain scenarios. Accordingly, the communication device provided in the embodiments of the present application may also implement these features or functions accordingly, which will not be described in detail here.

[0239] It should be understood that the processor in the embodiment of the present application can be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method embodiment can be completed by an integrated logic circuit of hardware in the processor or an instruction in the form of software. The above processor can be a general-purpose processor, a digital signal processor (digital signal processor, DSP), an ASIC, a field programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.

[0240] It can be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), and direct RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0241] The present application also provides a computer-readable medium for storing computer software instructions, which, when executed by a communication device, implement the functions of any of the above method embodiments.

[0242] The present application also provides a computer program product for storing computer software instructions, which, when executed by a communication device, implement the functions of any of the above method embodiments.

[0243] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a high-density digital video disc (DVD)), or a semiconductor medium (eg, a solid state drive (SSD)).

[0244] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

Claims

1. A paging method, characterized in that: Applied to a first network device, the method comprises: Acquire first information, where the first information is determined based on a coverage window set and an extended discontinuous reception eDRX parameter, where the coverage window set includes one or more coverage windows, and the coverage window is a time period when the terminal device is under network coverage; Receiving a first paging message from a core network device; A second paging message is sent to the terminal device within a first paging time window, where the first paging time window is determined based on the first information.

2. The method according to claim 1, characterized in that: There is an overlapping portion between the first paging time window and a coverage window in the coverage window set of the terminal device.

3. The method according to claim 1 or 2, characterized in that: The first information includes first time information and an offset table, the first time information indicates time unit information of one or more paging time windows in a first paging time window set, the first paging time window set is determined based on the eDRX parameter, and the offset table includes one or more offset time units corresponding to the one or more paging time windows respectively.

4. The method according to claim 3, characterized in that: The offset time unit is determined according to the covering window set and the first time information.

5. The method according to claim 3 or 4, characterized in that: After receiving the paging message from the core network device, the method further includes: Determine a third paging time window, wherein the first time information includes time unit information where the third paging time window is located; The first paging time window is determined based on the offset time unit corresponding to the third paging time window in the offset table.

6. The method according to claim 1 or 2, characterized in that: The first information includes time unit information of the second paging time window, an eDRX cycle, a bitmap and an offset table, the offset table includes one or more offset time units corresponding to one or more paging time windows, the one or more paging time windows include the second paging time window, and the bitmap, the eDRX cycle and the second paging time window are used to determine the paging time windows other than the second paging time window in the one or more paging time windows.

7. The method according to claim 1 or 2, characterized in that: The first information includes time unit information of the paging time window in the second paging time window set, the second paging time window set is determined based on the coverage window set and the eDRX parameter, there is an overlapping part between each paging time window in the second paging time window set and the coverage window in the coverage window set, and the first paging time window belongs to the second paging time window set.

8. The method according to any one of claims 1 to 7, characterized in that: The obtaining of the first information includes: Receive the first information from a first device, where the first device is the terminal device, a second network device and one of the core network devices, and the second network device is the last network device to establish a connection with the terminal device.

9. The method according to any one of claims 1 to 8, characterized in that: The obtaining of the first information includes: determining the first information; A release message is sent to the terminal device, wherein the release message carries the first information.

10. The method according to claim 9, characterized in that Before determining the first information, the method further includes: Receive the eDRX parameter sent from the core network device.

11. The method according to any one of claims 1 to 8, characterized in that: The first paging message includes a tracking area identification code TAI list, and the TAI corresponding to the geographical location covered by the satellite associated with the first network device within the first paging time window is a TAI in the TAI list.

12. A paging method, characterized in that: Applied to a terminal device, the method comprises: Acquire first information, where the first information is determined based on a coverage window set and an extended discontinuous reception eDRX parameter, where the coverage window set includes one or more coverage windows, and the coverage window is a time period in which the terminal device is under network coverage; A second paging message is received from a first network device within a first paging time window, where the first paging time window is determined based on the first information.

13. The method according to claim 12, characterized in that There is an overlapping portion between the first paging time window and the first covering window in the covering window set of the terminal device.

14. The method according to claim 12 or 13, characterized in that The first information includes first time information and an offset table, the first time information indicates time unit information of one or more paging time windows in a first paging time window set, the first paging time window set is determined based on the eDRX parameter, and the offset table includes one or more offset time units corresponding to the one or more paging time windows respectively.

15. The method according to claim 14, characterized in that The offset time unit is determined according to the covering window set and the first time information.

16. The method according to claim 14 or 15, characterized in that Before receiving the second paging message from the first network device, the method further includes: Determine a third paging time window, wherein the first time information includes time unit information where the third paging time window is located; The first paging time window is determined based on the offset time unit corresponding to the third paging time window in the offset table.

17. The method according to claim 12 or 13, characterized in that The first information includes time unit information of the second paging time window, an eDRX cycle, a bitmap and an offset table, the offset table includes one or more offset time units corresponding to one or more paging time windows, the one or more paging time windows include the second paging time window, and the bitmap, the eDRX cycle and the second paging time window are used to determine the paging time windows other than the second paging time window in the one or more paging time windows.

18. The method according to claim 12 or 13, characterized in that: The first information includes time unit information of the paging time window in the second paging time window set, the second paging time window set is determined based on the coverage window set and the eDRX parameter, there is an overlapping part between each paging time window in the second paging time window set and the coverage window in the coverage window set, and the first paging time window belongs to the second paging time window set.

19. The method according to any one of claims 12 to 18, characterized in that: The obtaining of the first information includes: Receive the first information from a second device, where the second device is a core network device or a third network device, where the third network device is the last network device to establish a connection with the terminal device, and where the third network device is the first network device or the second network device.

20. The method according to any one of claims 10 to 14, characterized in that: The obtaining of the first information includes: determining the first information; The first information is sent to a second device, where the second device is a core network device or a third network device, where the third network device is the last network device to establish a connection with the terminal device, and the third network device is the first network device or the second network device.

21. The method according to any one of claims 12 to 20, characterized in that: The obtaining of the first information includes: The first information is periodically acquired based on a preset wake-up time.

22. A communication device, characterized in that: The communication device includes a module or unit for executing the method according to any one of claims 1 to 11, or the communication device includes a module or unit for executing the method according to any one of claims 12 to 21.

23. A communication device, characterized in that: The method comprises a processor coupled to a memory, wherein the processor is configured to execute a computer program or instruction stored in the memory to implement the method according to any one of claims 1 to 11 or the method according to any one of claims 12 to 21.

24. The device according to claim 23, characterized in that The device further includes the memory and / or a transceiver, wherein the transceiver is used for transmitting and receiving data and / or signaling.

25. A communication device, characterized in that: The invention comprises a processor and an interface circuit, wherein the interface circuit is used to receive a signal from other communication devices other than the communication device and transmit it to the processor or send the signal from the processor to other communication devices other than the communication device, and the processor executes the method as claimed in any one of claims 1 to 11 through a logic circuit or an execution instruction, or the processor executes the method as claimed in any one of claims 12 to 21 through a logic circuit or an execution instruction.

26. A computer-readable storage medium, characterized in that: The storage medium stores a computer program or an instruction. When the computer program or the instruction is executed by the communication device, the method according to any one of claims 1 to 11 is executed, or the method according to any one of claims 12 to 21 is executed.

27. A communication system, characterized in that: The communication system comprises a first device and a second device, wherein the first device is used to execute the method as described in any one of claims 1 to 11, and the second device is used to execute the method as described in any one of claims 12 to 21.

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