Method and apparatus for transmitting low power wake up signal (LPWUS)

Abstract

Embodiments of the present application relate to the field of communications, and provide a method and apparatus for transmitting a low power wake up signal (LPWUS), which define a relationship between the LPWUS and a paging frame (PF) / PO and can achieve the purposes of reducing network resource overhead and reducing a paging delay. The method therefor comprises: a terminal device receives a first message from a network device, the first message comprising N first offsets, and N being an integer greater than or equal to 1; and the terminal device monitors for an LPWUS from the network device at a time domain position of the LPWUS, the LPWUS being used for waking up an MR of the terminal device, the time domain position of the LPWUS being determined on the basis of the N first offsets and a target PF, and the target PF being a PF in which the terminal device monitors for a paging message.

Description

A method and device for transmitting a low power wake-up signal LPWUS

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on February 8, 2024, with application number 202410178107.9 and invention name “A method and device for transmitting a low-power wake-up signal LPWUS”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The embodiments of the present application relate to the field of communications, and in particular to a method and apparatus for transmitting a low power wake up signal (LPWUS). Background Art

[0003] Currently, LPWUS has been introduced into communication standards. Terminal devices can use a low-power wake-up radio (LPWUR) to receive LPWUS. Upon receiving LPWUS, the LPWUR wakes up the terminal device's main radio (MR), which can then receive paging messages. Before being awakened by the LR, the MR can remain in a dormant state (e.g., ultra-deep sleep) and not send or receive data, thus conserving power.

[0004] The network can send LPWUS based on service needs (for example, when downlink data arrives). The terminal device can monitor LPWUS to identify whether it is being paged and then promptly wake up the MR so that the MR can receive the paging message on the terminal device's corresponding PF / PO. However, current communication standards do not define the relationship between LPWUS and PF / PO. Summary of the Invention

[0005] The embodiments of the present application provide a LPWUS transmission method and apparatus, define the relationship between LPWUS and PF / PO, and can achieve the purpose of saving network resource overhead and reducing paging delay.

[0006] To achieve the above objectives, the embodiments of the present application adopt the following technical solutions:

[0007] In a first aspect, a method for transmitting a low-power wake-up signal LPWUS is provided, including: a terminal device receives a first message from a network device, the first message including N first offsets, where N is an integer greater than or equal to 1; the terminal device listens to the LPWUS from the network device at a time domain position of the LPWUS, where the LPWUS is used to wake up the MR of the terminal device; wherein the time domain position of the LPWUS is determined based on the N first offsets and a target paging frame PF; wherein the target PF is the PF of the paging message that the terminal device listens to.

[0008] The method provided in the embodiment of the present application defines the relationship between LPWUS and PF (PF can also be replaced by PO). The terminal device can receive N first offsets sent by the network device (for example, a base station), determine the time domain position of the LPWUS based on the N first offsets and the PF used to monitor the paging message, and monitor the LPWUS from the network device at the time domain position of the LPWUS, thereby waking up the MR of the UE. In this way, the terminal device (for example, the UE) does not need to continuously start the MR, which can avoid the problem of power consumption waste caused by the UE starting the MR. After the UE monitors the LPWUS, it can promptly start the MR to monitor the paging message, thereby reducing the paging delay.

[0009] In one possible implementation, the time domain position of the LPWUS is determined based on N first offsets and a target paging frame PF, including: the time domain position of the LPWUS is determined based on a target offset and a target PF, the target offset is determined from the N first offsets based on the capability information of the MR of the terminal device, and the target offset is used to indicate the offset between the time domain position of the LPWUS and the target PF. The terminal device can determine the time domain position of the LPWUS based on the target offset and the target PF, so as to listen to the LPWUS from the network device at the time domain position of the LPWUS, thereby waking up the MR of the UE. In this way, the UE does not need to continuously start the MR, which can avoid the problem of power consumption waste caused by the UE starting the MR. After the UE monitors the LPWUS, it can promptly start the MR to monitor the paging message, thereby reducing the paging delay.

[0010] In one possible implementation, the method further includes: the terminal device sending a second message to the network device, the second message including capability information of the terminal device's main receiver MR. The terminal device can determine a target offset from the N first offsets based on the capability information of its own MR, and determine the time domain location of the LPWUS based on the target offset and the target PF, so as to monitor the LPWUS from the network device at the time domain location of the LPWUS, thereby waking up the UE's MR. In this way, the UE does not need to continuously activate the MR, thereby avoiding the problem of wasted power consumption caused by the UE activating the MR. After the UE monitors the LPWUS, it can promptly activate the MR to monitor for paging messages, thereby reducing paging latency.

[0011] In one possible implementation, the MR capability information includes the MR startup duration, with a target offset greater than or equal to the MR startup duration, or a target offset greater than or equal to the sum of the MR startup duration and a second offset. The terminal device can determine the time domain location of the LPWUS based on the target offset and target PF, so that it can monitor the LPWUS from the network device at the LPWUS time domain location and thereby wake up the UE's MR. Because the target offset is greater than or equal to the MR startup duration, or the target offset is greater than or equal to the sum of the MR startup duration and the second offset, the terminal device can monitor the PF promptly after the MR is activated, avoiding missed paging messages and reducing paging latency.

[0012] In one possible implementation, the target offset is the smallest first offset among M first offsets, where the M first offsets belong to N first offsets; M is an integer less than or equal to N; each of the M first offsets is greater than or equal to the MR startup duration; or each of the M first offsets is greater than or equal to the sum of the MR startup duration and the second offset. Because the target offset is the smallest first offset among the M first offsets, the terminal device can monitor the PF promptly after the MR is started, thus avoiding the problem of wasted power consumption caused by premature MR startup.

[0013] In a possible implementation, the first message is a system broadcast message. The system broadcast message may include, for example, SIB1 or SIB2.

[0014] In one possible implementation, the terminal device listens for the LPWUS from the network device at the time domain position of the LPWUS, including: the terminal device listens for the LPWUS from the network device for a duration before or after the time domain position of the LPWUS. In an embodiment of the present application, the time domain position of the LPWUS may be the starting point of a time period. The base station may continuously send LPWUS within the time period, and the UE may continuously receive LPWUS within the time period, thereby waking up the MR of the UE. Alternatively, the base station may start a timer at the time domain position of the LPWUS (i.e., the starting point of a time period), and continuously send LPWUS during the operation of the timer to wake up the MR of the UE. The UE may start a timer at the time domain position of the LPWUS (i.e., the starting point of a time period), and continuously receive LPWUS during the operation of the timer, thereby waking up the MR of the UE. The timing duration of the time period or timer may be one or more symbols or slots, which is not specifically limited in this application.

[0015] In one possible implementation, if the MR capability information of the terminal device indicates an MR activation duration greater than any of the N first offsets, the terminal device does not receive the LPWUS from the network device. The terminal device can use the existing paging monitoring mechanism to always enable the MR to monitor its own paging messages. This avoids the problem of the UE missing paging messages due to not enabling the MR in time, thereby reducing paging latency.

[0016] According to a second aspect, a method for transmitting a low-power wake-up signal LPWUS is provided, comprising: a network device sending a first message, the first message including N first offsets, where N is an integer greater than or equal to 1; the network device sending the LPWUS at the time domain position of the LPWUS, where the LPWUS is used to wake up the MR of the terminal device; wherein the time domain position of the LPWUS is determined based on the N first offsets and the target paging frame PF; wherein the target PF is the PF of the terminal device monitoring the paging message.

[0017] The method provided in the embodiment of the present application defines the relationship between LPWUS and PF (PF can also be replaced by PO). The network device (for example, a base station) can send N first offsets to the terminal device (for example, a UE), determine the time domain position of the LPWUS based on the N first offsets and the PF used to monitor the paging message, and send the LPWUS from the network device at the time domain position of the LPWUS, thereby waking up the MR of the UE. In this way, the network device does not need to send multiple LPWUS to wake up different UEs respectively, which can save network resource overhead. In addition, the UE does not need to continuously start the MR, which can avoid the problem of power consumption waste caused by the UE starting the MR. After the UE monitors the LPWUS, it can promptly start the MR to monitor the paging message, thereby reducing the paging delay. The method provided in the embodiment of the present application can achieve a balance between reducing power consumption, reducing paging delay and saving network resource overhead.

[0018] In one possible implementation, the time domain position of the LPWUS is determined based on N first offsets and the target paging frame PF, including: the time domain position of the LPWUS is determined based on the target offset and the target PF, the target offset is determined from the N first offsets based on the capability information of the MR of the terminal device, and the target offset is used to indicate the offset between the time domain position of the LPWUS and the target PF.

[0019] In a possible implementation manner, the method further includes: the network device receiving a second message from the terminal device, where the second message includes capability information of a main receiver MR of the terminal device.

[0020] In a possible implementation, the MR capability information includes the MR startup duration, and the target offset is greater than or equal to the MR startup duration; or the target offset is greater than or equal to the sum of the MR startup duration and the second offset.

[0021] In one possible implementation, the target offset is the smallest first offset among M first offsets, and the M first offsets belong to N first offsets; M is an integer less than or equal to N; each first offset among the M first offsets is greater than or equal to the MR startup duration; or, each first offset among the M first offsets is greater than or equal to the sum of the MR startup duration and the second offset.

[0022] In a possible implementation manner, the first message is a system broadcast message.

[0023] In a possible implementation manner, the network device sends the LPWUS at the time domain location of the LPWUS, including: the network device sends the LPWUS from the network device for a duration before or after the time domain location of the LPWUS.

[0024] In one possible implementation, the method further includes: the network device sends the capability information of the MR of the terminal device to the access and mobility management function AMF network element.

[0025] According to a third aspect, a method for transmitting a low-power wake-up signal LPWUS is provided, comprising: a terminal device receives a first message from a network device, the first message comprising N index information and N first offsets, the N index information and the N first offsets corresponding one to one, each index information in the N index information being used to indicate the position of a paging frame PF, where N is an integer greater than or equal to 1; the terminal device monitors the LPWUS at the time domain position of the LPWUS, and the LPWUS is used to wake up a main receiver MR of the terminal device; wherein the time domain position of the LPWUS is determined based on the N index information and the N first offsets.

[0026] The method provided in the embodiment of the present application defines the relationship between LPWUS and PF (PF can also be replaced by PO). The terminal device can receive N first offsets and N index information sent by the network device (for example, a base station), determine the time domain position of the LPWUS based on the N first offsets and N index information, and listen to the LPWUS from the network device at the time domain position of the LPWUS, thereby waking up the MR of the UE. In this way, the terminal device (for example, the UE) does not need to continuously start the MR, which can avoid the problem of power consumption waste caused by the UE starting the MR. After the UE monitors the LPWUS, it can promptly start the MR to monitor the paging message, thereby reducing the paging delay.

[0027] In one possible implementation, the time domain position of the LPWUS is determined based on N index information and N first offsets, including: the time domain position of the LPWUS is determined based on the target offset and target PF corresponding to the terminal device, the target PF is determined based on the target index information, the target index information is determined based on N index information, the target offset is determined based on N first offsets, and the target offset is used to indicate the offset between the time domain position of the LPWUS and the target PF. The terminal device can determine the time domain position of the LPWUS based on the target offset and the target PF, so as to listen to the LPWUS from the network device at the time domain position of the LPWUS, and then wake up the MR of the UE. In this way, the UE does not need to continuously start the MR, which can avoid the problem of power consumption waste caused by the UE starting the MR. After the UE monitors the LPWUS, it can promptly start the MR to monitor the paging message, thereby reducing the paging delay.

[0028] In one possible implementation, the target PF is the PF of multiple terminal devices that have the same or similar MR startup time as the terminal device to monitor paging messages. In this way, the MRs of multiple UEs corresponding to the same PF can be woken up by one LPWUS, which can save network resource overhead.

[0029] In a possible implementation, the target PF satisfies the following formula: (SFN+PF_offset) mod T = (T div N) * (index mod N)

[0030] SFN represents the system frame number, PF_offset represents the offset of the PF itself, T represents the discontinuous reception DRX cycle, N represents the number of PFs in the DRX cycle, and index represents the position of the target PF in the DRX cycle, where index<=N.

[0031] In one possible implementation, the first message also includes N first parameters, and the N first parameters correspond one-to-one to the N index information; the target PF is determined based on the target index information, including: the target PF is determined based on the target index information and the target first parameter, the target first parameter is determined based on the N first parameters, the target index information is used to indicate the starting position of the target PF, and the target first parameter is used to indicate the number of target PFs.

[0032] In a possible implementation, the target PF satisfies the following formula: (SFN+PF_offset) mod T = (T div N) * ((index+offset_1) mod N)

[0033] Among them, SFN represents the system frame number, PF_offset represents the offset of the PF itself, T represents the DRX cycle, N represents the number of PFs in the DRX cycle, index represents the starting position of the target PF in the DRX cycle, index<=N, offset_1=UE_ID mod DistrLen, DistrLen represents the number of target PFs, and UE_ID represents the identifier of the terminal device.

[0034] In a fourth aspect, a method for transmitting a low-power wake-up signal LPWUS is provided, including: a network device sends a first message, the first message including N index information and N first offsets, the N index information and the N first offsets correspond one to one, each index information in the N index information is used to indicate the position of a paging frame PF, and N is an integer greater than or equal to 1; the network device sends LPWUS at the time domain position of LPWUS, and LPWUS is used to wake up the main receiver MR of the terminal device; wherein the time domain position of LPWUS is determined based on the N index information and the N first offsets.

[0035] The method provided in the embodiment of the present application defines the relationship between LPWUS and PF (PF can also be replaced by PO). The network device (for example, a base station) can send N first offsets and N index information to the terminal device (for example, a UE), determine the time domain position of the LPWUS based on the N first offsets and N index information, and send the LPWUS from the network device at the time domain position of the LPWUS, thereby waking up the MR of the UE. In this way, the network device does not need to send multiple LPWUS to wake up different UEs respectively, which can save network resource overhead. In addition, the UE does not need to continuously start the MR, which can avoid the problem of power consumption waste caused by the UE starting the MR. After the UE monitors the LPWUS, it can promptly start the MR to monitor the paging message, thereby reducing the paging delay. The method provided in the embodiment of the present application can achieve a balance between reducing power consumption, reducing paging delay and saving network resource overhead.

[0036] In one possible implementation, the time domain position of LPWUS is determined based on N index information and N first offsets, including: the time domain position of LPWUS is determined based on the target offset and target PF corresponding to the terminal device, the target PF is determined based on the target index information, the target index information is determined based on N index information, the target offset is determined based on N first offsets, and the target offset is used to indicate the offset between the time domain position of LPWUS and the target PF.

[0037] In a possible implementation, the target PF is the PFs of multiple terminal devices that monitor paging messages with a same or similar MR startup duration as that of the terminal device.

[0038] In a possible implementation, the target PF satisfies the following formula: (SFN+PF_offset) mod T = (T div N) * (index mod N)

[0039] SFN represents the system frame number, PF_offset represents the offset of the PF itself, T represents the discontinuous reception DRX cycle, N represents the number of PFs in the DRX cycle, and index represents the position of the target PF in the DRX cycle, where index<=N.

[0040] In one possible implementation, the first message also includes N first parameters, and the N first parameters correspond one-to-one to the N index information; the target PF is determined based on the target index information, including: the target PF is determined based on the target index information and the target first parameter, the target first parameter is determined based on the N first parameters, the target index information is used to indicate the starting position of the target PF, and the target first parameter is used to indicate the number of target PFs.

[0041] In a possible implementation, the target PF satisfies the following formula: (SFN+PF_offset) mod T = (T div N) * ((index+offset_1) mod N)

[0042] Among them, SFN represents the system frame number, PF_offset represents the offset of the PF itself, T represents the DRX cycle, N represents the number of PFs in the DRX cycle, index represents the starting position of the target PF in the DRX cycle, index<=N, offset_1=UE_ID mod DistrLen, DistrLen represents the number of target PFs, and UE_ID represents the identifier of the terminal device.

[0043] In a fifth aspect, an embodiment of the present application further provides a communication device, which may be a terminal device or a chip. The communication device includes a processor for implementing any one of the LPWUS transmission methods provided in the first or third aspects above. The communication device may further include a memory for storing program instructions and data, and the memory may be a memory integrated in the communication device, or an off-chip memory provided outside the communication device. The memory is coupled to the processor, and the processor may call and execute program instructions stored in the memory to implement any one of the LPWUS transmission methods provided in the first or third aspects above. The communication device may further include a communication interface for the communication device to communicate with other devices (e.g., network devices).

[0044] In a sixth aspect, an embodiment of the present application further provides a communication device, which may be a network device or a chip. The communication device includes a processor for implementing any one of the LPWUS transmission methods provided in the second or fourth aspects above. The communication device may further include a memory for storing program instructions and data, and the memory may be a memory integrated in the communication device, or an off-chip memory provided outside the communication device. The memory is coupled to the processor, and the processor may call and execute program instructions stored in the memory to implement any one of the LPWUS transmission methods provided in the second or fourth aspects above. The communication device may further include a communication interface for the communication device to communicate with other devices (e.g., terminal devices).

[0045] In a seventh aspect, an embodiment of the present application provides a computer-readable storage medium comprising instructions, which, when executed on a computer, enables the computer to execute any one of the LPWUS transmission methods provided in any one of the first to fourth aspects above.

[0046] In an eighth aspect, an embodiment of the present application provides a computer program product comprising instructions, which, when executed on a computer, enables the computer to execute any one of the LPWUS transmission methods provided in any one of the first to fourth aspects above.

[0047] In a ninth aspect, embodiments of the present application provide a chip system comprising a processor and possibly a memory, configured to implement any of the LPWUS transmission methods provided in any of the first to fourth aspects. The chip system may consist of a chip alone or may include a chip and other discrete components.

[0048] In the tenth aspect, an embodiment of the present application provides a communication system, which includes the communication device in the fifth aspect and the communication device in the sixth aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] FIG1 is a schematic diagram of PF and PO in a DRX cycle provided by an embodiment of the present application;

[0050] FIG2 is a schematic diagram of a sub-group provided in an embodiment of the present application;

[0051] FIG3 is a schematic structural diagram of a UE provided in an embodiment of the present application;

[0052] FIG4 is a schematic diagram of the coverage of an LPWUS provided in an embodiment of the present application;

[0053] FIG5 is a schematic diagram of a network architecture provided in an embodiment of the present application;

[0054] FIG6 is a schematic diagram of the structure of a terminal device provided in an embodiment of the present application;

[0055] FIG7 is a schematic diagram of the structure of a network device provided in an embodiment of the present application;

[0056] FIG8 is a schematic diagram of a time domain position of an LPWUS provided in an embodiment of the present application;

[0057] FIG9 is a schematic diagram of a time domain position of another LPWUS provided in an embodiment of the present application;

[0058] FIG10 is a schematic diagram of a signal interaction provided in an embodiment of the present application;

[0059] FIG11 is a schematic diagram of a time domain position of another LPWUS provided in an embodiment of the present application;

[0060] FIG12 is a schematic diagram of a time domain position of another LPWUS provided in an embodiment of the present application;

[0061] FIG13 is another schematic diagram of signal interaction provided in an embodiment of the present application;

[0062] FIG14A is a schematic diagram of a time domain position of another LPWUS provided in an embodiment of the present application;

[0063] FIG14B is a schematic diagram of a time domain position of another LPWUS provided in an embodiment of the present application;

[0064] FIG15 is another signal interaction diagram provided in an embodiment of the present application;

[0065] FIG16 is a schematic structural diagram of another terminal device provided in an embodiment of the present application;

[0066] FIG17 is a schematic structural diagram of another network device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0067] To make the description of the following embodiments clear and concise, a brief introduction to the relevant concepts or technologies is first given:

[0068] Air interface paging mechanism: The network side can send a paging message to a terminal device in an idle state, inactive state, or connected state for paging. It is understandable that when the terminal device has registered with the network, when there is a radio resource control (RRC) connection between the terminal device and the base station, the terminal device is in a connected state; when there is no RRC connection between the terminal device and the base station, the terminal device is in an idle state. When there is a radio resource control connection between the terminal device and the base station, but there is no connection between the terminal device and the core network, the terminal device is in an inactive state.

[0069] The paging process can be triggered by the core network. For example, when the core network needs to send data or signaling to the terminal device, or the terminal device needs to reattach, the paging process can be initiated by sending a paging message to the base station through the AMF. After the base station receives the paging message, it pages the terminal device by sending a paging message to the terminal device. The paging process can also be triggered by the base station. For example, when the cell system information changes, or when the base station needs to notify the terminal device to receive information such as the earthquake and tsunami warning system (ETWS) or commercial mobile alert service (CMAS), the base station can send a paging message to the terminal device to page the terminal device.

[0070] In idle state, a terminal device can receive paging messages using discontinuous reception (DRX) to save power. As shown in Figure 1, a DRX cycle may include multiple radio frames, some of which are used to transmit paging messages. These radio frames used to transmit paging messages are called paging frames (PF). Each paging frame may include multiple subframes, some of which are used to transmit paging messages. These subframes are called paging occasions (PO). The terminal device can read the physical downlink control channel (PDCCH) on its corresponding PO to determine whether the PDCCH carries the paging radio network temporary identity (P-RNTI), and then determine whether the corresponding physical downlink shared channel (PDSCH) carries the paging message. If the terminal device determines that the PDCCH carries the P-RNTI, it can read the content of the paging message from the corresponding PDSCH. If the terminal device determines that the PDCCH does not carry the P-RNTI, it does not need to receive the PDSCH and can enter sleep mode based on the DRX cycle to save power consumption.

[0071] The frame number of the PF and the subframe number of the PO corresponding to the terminal device can be determined according to parameters such as the international mobile subscriber identification number (IMSI) and the DRX cycle of the terminal device.

[0072] For example, in a 5G communication system, the frame number of the PF satisfies the formula (1): (SFN+PF_offset)mod T=(T div N)*(UE_ID mod N) (1)

[0073] Where SFN represents the system frame number. PF_offset represents the offset of the PF itself. T represents the DRX cycle, which can be, for example, 32, 64, 128, or 256 radio frames. N = min(T, nB), where nB represents the number of paging packets. UE_ID = IMSI mod 4096.

[0074] The PO subframe number i_s satisfies the formula (2): i_s = floor (UE_ID / N) mod Ns (2)

[0075] Wherein, Ns=max(1, nB / T). "floor(UE_ID / N)" means rounding down the quotient of (UE_ID / N). For other parameters, refer to the above description and are not repeated here.

[0076] In order to save power as much as possible for terminal devices, the communication standard introduces paging early indication (PEI). In the PEI mechanism, multiple terminal devices monitoring the same PO can be divided into multiple subgroups (subgrouping / Subgroup), and paging indications are sent for the subgroups. For example, as shown in Figure 2, the eight terminal devices (including UE1-UE8) monitoring a certain PO (for example, PO1) can be divided into two subgroups (for example, subgroup 0 (sg0) and subgroup 1 (sg1)). Subgroup 0 can include UE1-UE4, and subgroup 1 can include UE5-UE8.

[0077] The network can send a paging indication to idle or inactive terminal devices in advance, so that the terminal device can determine whether its subgroup has a relevant paging message on the PO based on the paging indication. If the subgroup to which the terminal device belongs has a relevant paging message on the PO, the terminal device can monitor the PO; if the subgroup to which the terminal device belongs does not have a relevant paging message on the PO, the terminal device can sleep, thereby achieving the purpose of energy saving.

[0078] LPWUS mechanism: As shown in Figure 3, under the LPWUS mechanism, a terminal device may include a main receiver (MR) and a low-power wake-up receiver (LPWUR). The LPWUR can be abbreviated as LR. The LR is used to receive and process signals related to low-power wake-up signals, such as LPWUS. The MR is used to send and receive data. The LR has lower power consumption than the MR.

[0079] If the terminal device supports the low-power wake-up signal function, in the idle state or inactive state, the MR of the terminal device can enter the sleep state (for example, ultra-deep sleep) when the signal quality threshold configured by the network system message broadcast (for example, SIB) is met, that is, the MR can be turned off to save power. The terminal device can use the LR to receive the LPWUS sent by the base station. After receiving the LPWUS, the LR can wake up the MR. The awakened MR can send and receive data, for example, it can receive paging messages. As shown in Figure 4, the coverage of the LPWUS can be smaller than the coverage of the synchronization signal / physical broadcast channel block ((synchronization signal, SS) / (physical broadcast channel, PBCH) block, SSB).

[0080] In the embodiments of the present application, LPWUR may also be referred to as a low-power wake-up radio or a low-power wake-up communication module. LPWUS may also be referred to as LP WUS or LP-WUS, which is not specifically limited in this application.

[0081] Currently, the network can send LPWUS based on service needs (for example, when downlink data arrives). The terminal device can monitor LPWUS to identify whether it is being paged and then promptly wake up the MR so that the MR can receive the paging message on the terminal device's corresponding PF / PO. However, the current communication standards do not define the relationship between LPWUS and PF / PO.

[0082] The embodiments of the present application provide a LPWUS transmission method and apparatus, define the relationship between LPWUS and PF / PO, and can achieve the purpose of saving network resource overhead and power consumption.

[0083] Figure 5 is a schematic diagram of a network architecture provided by an embodiment of the present application. As shown in Figure 5, the network architecture may include terminal devices, network devices (e.g., base stations), core networks, and IMS or the Internet. The following is a detailed description of the network architecture:

[0084] (1) Terminal device: A device that includes wireless transceiver functions and can cooperate with network equipment (e.g., base stations) to provide communication services to users.

[0085] The terminal device provided in the embodiments of the present application may be a user equipment (UE), a wearable electronic device (also referred to as a wearable device) or an Internet of Things (IoT) device. For example, the user equipment may be a mobile phone, a tablet computer, a desktop, a laptop, an ultra-mobile personal computer (UMPC), a handheld computer, a netbook, a personal digital assistant (PDA), a vehicle or other device. Wearable electronic devices may be, for example, smart watches, smart glasses, wireless locators, trackers, smart gloves, smart clothing and shoes, etc. IoT devices may be, for example, gas meters, water meters, smoke sensors, vehicle-mounted devices (for example, vehicle-mounted audio, vehicle-mounted air conditioning), washing machines, refrigerators, rice cookers, televisions, audio equipment, coffee machines, soybean milk machines, bread machines, printers or other devices.

[0086] The technical solution provided in this application can be applied to 5G mobile communication systems or new radio (NR), etc., and can also be applied to future communication systems, such as the sixth generation mobile communication system. Among them, the communication system can be a future evolved public land mobile network (PLMN) network, device to device (D2D) network, machine to machine (M2M) network, Internet of Things (IoT) network or other network, and this application does not limit it.

[0087] (2) Network equipment: It can be an access network device, for example, a base station. The base station can be a fourth generation (4 th base stations of mobile communication systems or fifth generation (5 th A 5G base station is a base station in a 5G (5G generation) mobile communication system. A 4G base station can be an evolved NodeB (eNB or eNodeB) in long-term evolution (LTE), and a 5G base station can be a gNB in ​​new radio (NR). A base station in NR can also be called a transmission reception point (TRP).

[0088] As you can understand, network equipment is responsible for connecting terminal devices to the core network (also known as the backbone) using some form of wired or wireless connection and communication technology, thus achieving network connectivity. The access network is the edge of the entire network, the part closest to users, and is often called the "last mile."

[0089] (3) Core Network: Its primary functions are to provide user connections, user management, and service delivery. It serves as a bearer network, providing an interface to external networks. Establishing user connections includes functions such as mobility management (MM), call management (CM), switching / routing, and recording notifications (combined with intelligent network services to complete connections to intelligent network peripheral devices).

[0090] It can be understood that the core network of the 4G network is the evolved packet core (EPC) network. The EPC network is the core network of the 4G mobile communication network. It belongs to the core network category and has traditional mobile network capabilities such as user subscription data storage, mobility management and data exchange, and can provide users with an ultra-high-speed Internet experience. The core network of the 5G network is the 5G Core (abbreviated as 5GC). 5GC will use general-purpose network function virtualization equipment to replace the dedicated communication equipment of the 4G network. The core network in the network architecture shown in Figure 5 can be obtained by integrating the EPC and 5GC. In other words, the core network in this network architecture can include both network elements in the EPC and network elements in the 5GC.

[0091] The core network may include an access and mobility management function (AMF) network element. The AMF network element is responsible for access and mobility management functions. It can receive non-access stratum (NAS) signaling (including session management (SM) signaling) from terminal devices and related signaling from network devices, complete the user registration process, forward SM signaling, and perform mobility management.

[0092] It is understood that the core network in the network architecture shown in FIG5 may also include other devices, network elements, network entities, or network subsystems, such as session management function (SMF) network elements and policy control function (PCF) network elements, and this application does not limit this. It should be noted that this application does not limit the distribution method of each network element in the core network. The specific distribution method can be referred to in relevant technical documents, and this application does not elaborate on this.

[0093] Each network element in the core network can also be called a functional entity, which can be a network element implemented on dedicated hardware, a software instance running on dedicated hardware, or an instance of a virtualized function on an appropriate platform.

[0094] It should be understood that the names of all network elements in this application are only examples. In future communications, such as 6G, they may also be called other names, or, in future communications, such as 6G, the network elements involved in this application may also be replaced by other entities or devices with the same functions, etc., and this application does not limit this. A unified explanation is given here and will not be repeated later. Optionally, the various network elements in the embodiments of the present application may be communication devices, or chips or chip systems that can be used in the communication devices, etc., and this embodiment of the present application does not limit this.

[0095] (4) IMS is a network architecture that provides voice and multimedia communication services (e.g., voice, video, and text messaging) based on the Internet Protocol (IP) network. IMS enables secure and reliable multimedia communication between different devices on different networks. The architectural model provides a unified infrastructure and common mechanisms for controlling, operating, routing, and managing sessions, as well as implementing authentication, authorization, and accounting controls. The IMS specifications include widely used Internet Engineering Task Force (IETF) recommendations. For example, the Session Initialization Protocol (SIP) is used for session control signaling.

[0096] The Internet, also known as the international network, generally refers to a vast network of interconnected networks, connected by a common set of protocols to form a single, logically vast international network. From a network communications perspective, the Internet is a data communications network that uses the Transmission Control Protocol (TCP) / Internet Protocol to connect computer networks in countries, regions, and institutions around the world.

[0097] It should be noted that the network architecture shown in FIG5 is not limited to including only the devices and networks shown in the figure, but may also include other devices not shown in the figure, and this application will not illustrate them one by one.

[0098] By way of example, the apparatus for implementing the functions of the terminal device provided in the embodiments of the present application can be implemented by the apparatus 600 in FIG6 . FIG6 shows a schematic diagram of the hardware structure of the apparatus 600 provided in the embodiments of the present application. The apparatus 600 includes at least one processor 601 for implementing the functions of the terminal device provided in the embodiments of the present application. The apparatus 600 may also include a bus 602 and at least one communication interface 604. The apparatus 600 may also include a memory 603.

[0099] In the embodiments of the present application, the processor may be a central processing unit (CPU), a general-purpose processor, a network processor (NP), a digital signal processor (DSP), a microprocessor, a microcontroller, or a programmable logic device (PLD). The processor may also be any other device having processing functions, such as an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, transistor logic devices, hardware components, software modules, or any combination thereof.

[0100] The bus 602 may be used to transmit information between the aforementioned components.

[0101] The communication interface 604 is used to communicate with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area network (WLAN), etc. The communication interface 604 can be an interface, circuit, transceiver, or other device capable of communication, and this application does not limit it. The communication interface 604 can be coupled to the processor 601. The coupling in the embodiment of the present application is an indirect coupling or communication connection between devices, units, or modules, which can be electrical, mechanical, or other forms, and is used for information exchange between devices, units, or modules.

[0102] In the embodiment of the present application, the memory may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type of dynamic storage device that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compact disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory may exist independently or be coupled to the processor, for example, via bus 602. The memory may also be integrated with the processor.

[0103] The memory 603 is used to store program instructions and can be controlled by the processor 601 to execute, thereby implementing the LPWUS transmission method provided in the following embodiments of this application. The processor 601 is used to call and execute the instructions stored in the memory 603, thereby implementing the LPWUS transmission method provided in the following embodiments of this application.

[0104] Optionally, the computer-executable instructions in the embodiments of the present application may also be referred to as application code, which is not specifically limited in the embodiments of the present application.

[0105] Optionally, the memory 603 may be included in the processor 601 .

[0106] In a specific implementation, as an embodiment, the processor 601 may include one or more CPUs, such as CPU0 and CPU1 in FIG6 .

[0107] In a specific implementation, as an embodiment, apparatus 600 may include multiple processors, such as processor 601 and processor 607 in FIG6 . Each of these processors may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, and / or processing cores for processing data (e.g., computer program instructions).

[0108] In a specific implementation, as an embodiment, the apparatus 600 may further include an output device 605 and an input device 606. The output device 605 is coupled to the processor 601 and can display information in a variety of ways. For example, the output device 605 can be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector. The input device 606 is coupled to the processor 601 and can receive user input in a variety of ways. For example, the input device 606 can be a touch screen device or a sensor device.

[0109] The apparatus for implementing the functions of the network device provided in the embodiment of the present application can be implemented by the apparatus 700 in Figure 7. Figure 7 shows a schematic diagram of the hardware structure of the apparatus 700 provided in the embodiment of the present application. The apparatus 700 includes at least one processor 701 for implementing the functions of the terminal device provided in the embodiment of the present application. The apparatus 700 may also include a bus 702 and at least one communication interface 704. The apparatus 700 may also include a memory 703.

[0110] The bus 702 may be used to transmit information between the aforementioned components.

[0111] Communication interface 704 is used to communicate with other devices or communication networks, such as Ethernet, RAN, WLAN, etc. Communication interface 704 can be an interface, circuit, transceiver, or other device capable of communication, and this application does not limit this. Communication interface 704 can be coupled to processor 701.

[0112] The memory 703 is used to store program instructions and can be controlled by the processor 701 to execute, thereby implementing the LPWUS transmission method provided in the following embodiments of the present application. For example, the processor 701 is used to call and execute the instructions stored in the memory 703, thereby implementing the LPWUS transmission method provided in the following embodiments of the present application.

[0113] Optionally, the memory 703 may be included in the processor 701 .

[0114] In a specific implementation, as an embodiment, the processor 701 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 7 .

[0115] In a specific implementation, as an embodiment, the device 700 may include multiple processors, such as the processor 701 and the processor 705 in Figure 7. Each of these processors may be a single-core processor or a multi-core processor. The processor here may refer to one or more devices, circuits, and / or processing cores for processing data (such as computer program instructions). The device 700 may be a device having a similar structure to the device 600, and the embodiments of the present application are not limited thereto.

[0116] The apparatus 700 described above may be a general-purpose device or a dedicated device. In a specific implementation, the apparatus 700 may be an access network device, such as a base station. The base station may be a 4G base station, such as an eNodeB, or a 5G base station, such as a gNB.

[0117] The terminal device or network device in the embodiment of the present application can be implemented by a device or a functional module in a device, and the embodiment of the present application does not specifically limit this. It is understandable that the above functions can be network elements in hardware devices, software functions running on dedicated hardware, virtualization functions instantiated on a platform (e.g., a cloud platform), or chip systems. In the embodiment of the present application, the chip system can be composed of chips, or it can include chips and other discrete devices.

[0118] Among them, the operating system of the terminal device can be Android system, Android system lightweight Internet of Things operating system (lite OS), Linux system, dual-frame system, or other operating systems, which is not limited in the embodiments of this application.

[0119] The network architecture and business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Ordinary technicians in this field will know that with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0120] The following describes the technical solutions in the embodiments of the present application in conjunction with the accompanying drawings. In the description of this application, unless otherwise specified, " / " represents the meaning of "or." For example, A / B can represent A or B. "And / or" in this document simply describes an association relationship between associated objects, indicating that three relationships can exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, in the description of this application, unless otherwise specified, "at least one" refers to one or more. "Multiple" refers to two or more. Furthermore, to facilitate the clear description of the technical solutions in the embodiments of the present application, the words "first" and "second" are used in the embodiments of the present application to distinguish between identical or similar items with substantially the same function and effect. Those skilled in the art will understand that the words "first" and "second" do not limit the quantity or order of execution, and the words "first" and "second" do not necessarily indicate differences.

[0121] The message names between network elements or the names of parameters in the messages in the following embodiments of the present application are merely examples, and other names may be used in specific implementations, which are not specifically limited in the embodiments of the present application.

[0122] For ease of understanding, the LPWUS transmission method provided in the embodiments of the present application is described in detail below with reference to the accompanying drawings.

[0123] In related art, multiple terminal devices monitoring the same PF / PO may have different MR startup durations. For example, a terminal device with stronger capabilities may have a shorter MR startup duration, while a terminal device with weaker capabilities may have a longer MR startup duration.

[0124] In some embodiments of the present application, for different terminal devices monitoring the same PF / PO, the base station can send LPWUS at different time domain positions before the PF / PO according to the MR startup duration of different terminal devices to wake up different terminal devices respectively.

[0125] For example, as shown in FIG8 , assuming that terminal devices are UEs, UE1, UE2, UE3, and UE4 are all assigned to PF0 (i.e., UE1-UE4 monitor the same PF, which is PF0). The MR start duration for UE1 is 800ms, the MR start duration for UE2 is 600ms, the MR start duration for UE3 is 400ms, and the MR start duration for UE4 is 200ms. The base station may send an LPWUS at different time domain locations based on the MR start durations of different UEs. For example, the base station may send an LPWUS for a duration before or after a first location (time domain location) to wake up UE1; for example, the first location may be 800ms + 20ms before the start location of PF0 (the 20ms may be an offset for synchronization). The base station may send an LPWUS for a duration before or after a second location to wake up UE2; for example, the second location may be 600ms + 20ms before the start location of PF0 (the 20ms may be an offset for synchronization). The base station may send LPWUS for a duration before or after the third position to wake up UE3; for example, the third position may be 400ms+20ms (20ms may be an offset for synchronization) before the starting position of PF0. The base station may send LPWUS for a duration before or after the fourth position to wake up UE4. For example, the fourth position may be 200ms+20ms (20ms may be an offset for synchronization) before the starting position of PF0. In this way, terminal devices with different MR startup times can be awakened at different positions, which can avoid the problem of power consumption waste caused by terminal devices with shorter MR startup times turning on MR in advance.

[0126] In an embodiment of the present application, the first position, the second position, the third position, and the fourth position may be the starting point of a time period. During this time period, the base station may continuously send LPWUS, and the UE may continuously receive LPWUS during this time period, thereby waking up the UE's MR. Alternatively, the base station may start a timer at the starting point of the time period and continuously send LPWUS during the timer to wake up the UE. The duration of the time period or timer may be one or more symbols or time slots, which is not specifically limited in this application.

[0127] In other embodiments, for different terminal devices monitoring the same PF / PO, the base station may send LPWUS in the time domain position before the PF / PO according to the longest MR activation duration supported by the base station to wake up different UEs simultaneously.

[0128] For example, as shown in Figure 9, it is assumed that UE1, UE2, UE3, and UE4 are all divided into PF0, and UE1-UE4 belong to the same subgroup (for example, sg0). The MR startup duration of UE1 is 800ms, the MR startup duration of UE2 is 400ms, the MR startup duration of UE3 is 200ms, and the MR startup duration of UE4 is 100ms. The longest MR startup duration supported by the base station is 800ms. The base station can send LPWUS for a duration before or after the first position. For example, the first position can be the position 800ms+20ms before the starting position of PF0 (20ms can be the offset for synchronization). All UEs assigned to PF0 listen for LPWUS for a duration before or after the time domain position of 800ms. In this way, the base station does not need to send multiple LPWUS to wake up different UEs separately, which can save network resource overhead.

[0129] In some other embodiments, for different terminal devices monitoring the same PF / PO, the base station can wake up different UEs in batches. As shown in Figure 10, an embodiment of the present application provides a LPWUS transmission method, which is described as an example of a terminal device being a UE and a network device being a base station, including the following steps:

[0130] 1001. The base station broadcasts the offset set supported by itself through a system broadcast message.

[0131] The offset set supported by the base station may include N first offsets, where N is an integer greater than or equal to 1.

[0132] In the embodiments of the present application, the offset may refer to an offset value, or the offset may indicate or be used to calculate an offset value. For example, the first offset may be a specific offset value, such as 100 ms (or 200 slots), 200 ms (or 400 slots), etc. Alternatively, the first offset may indicate an offset value, for example, the first offset may be p0 or p1, where p0 indicates 100 ms (or 200 slots) and p1 indicates 200 ms (or 400 slots).

[0133] In some embodiments, the first offset is related to the MR activation duration of the UE. For example, the base station can configure N first offsets based on the capabilities of the base station (e.g., bandwidth capabilities) and / or statistical data of the MR activation duration. The values ​​of the N first offsets can be different or the same. Those skilled in the art will understand that the specific configuration of the N first offsets can be determined by the base station or by other network devices, and this application does not limit this.

[0134] The statistical data of MR activation duration (also referred to as historical data) includes the MR activation duration of multiple UEs that have previously resided at the base station. The base station can obtain the MR activation duration of multiple UEs that have resided at the base station from the AMF.

[0135] For example, assuming that multiple UEs that have camped on a base station include UE1, UE2, UE3, and UE4, and the MR start duration of UE1 is 800ms, the MR start duration of UE2 is 400ms, the MR start duration of UE3 is 200ms, and the MR start duration of UE4 is 100ms, then the statistical data of the MR start duration may include {800ms, 400ms, 200ms, 100ms}. The base station can configure one (i.e., N=1) first offset based on the statistical data of the MR start duration, for example, 800ms. Alternatively, the base station can configure two (i.e., N=2) first offsets based on the statistical data of the MR start duration, for example, 800ms and 400ms respectively. Alternatively, the base station can configure four (i.e., N=4) first offsets based on the statistical data of the MR start duration, for example, 800ms, 400ms, 200ms, and 100ms respectively.

[0136] Optionally, the offset set supported by the base station may further include a second offset. The second offset is related to the downlink synchronization duration. For example, the second offset may be 20 ms. The second offset and the first offset may jointly indicate the offset between the time domain position (listening position or transmitting position) of the LPWUS and the time domain position of the target PF.

[0137] In some other embodiments, the first offset is related to the UE's MR startup duration and the second offset. The second offset is related to the downlink synchronization duration. The first offset may indicate the offset between the time domain position (listening position or transmitting position) of the LPWUS and the time domain position of the target PF.

[0138] For example, the base station can configure N first offsets based on the statistical data of the MR startup duration and the second offset. The values ​​of the N first offsets can be different. Assume that the statistical data of the MR startup duration includes {800ms, 400ms, 200ms, 100ms}, and the second offset is 20ms. The base station can configure two (i.e., N=2) first offsets based on the statistical data of the MR startup duration and the second offset, for example, 800+20ms (i.e., 820ms) and 400+20ms (i.e., 420ms) respectively. Alternatively, the base station can configure four (i.e., N=4) first offsets based on the statistical data of the MR startup duration, for example, 800+20ms (i.e., 820ms), 400+20ms (i.e., 420ms), 200+20ms (i.e., 220ms), and 100+20ms (i.e., 120ms) respectively.

[0139] In the case where the base station configures a first offset, that is, when N=1, the base station may send an LPWUS to the UE according to the unique first offset to wake up the MR of the UE.

[0140] When the base station is configured with multiple first offsets, the base station can send LPWUS to different UEs according to the multiple first offsets to wake up the MRs of different UEs. For example, when N=2, the base station can send LPWUS to different UEs according to two first offsets to wake up the MRs of different UEs.

[0141] The offset set supported by the base station may be carried in a system broadcast message. The system broadcast message may be, for example, SIB1, SIB2, etc., which is not specifically limited in this application.

[0142] The following is a possible format for a system broadcast message:

[0143] Wherein, LpwusOffset represents a first offset, and the first offset is related to the UE's MR activation duration. For example, the first offset may be greater than or equal to the UE's MR activation duration.

[0144] The data type of the first offset may be an enumeration type. For example, the first offset may include N enumeration values ​​(at least 1 and at most the number indicated by maxLpwusOffset). For example, the first offset may include one or more of ms100, ms200, ms300, ms400, ms500, ms600, ms700, and ms800.

[0145] Alternatively, the data type of the first offset may be an integer. For example, LpwusPOffset may also be defined as LpwusPOffset::=INTEGER(0...1000), with the unit being ms.

[0146] Wherein, ssbSynclen represents the second offset. The second offset is related to the downlink synchronization duration. For example, the second offset can be 0-20ms.

[0147] Here is another possible format for a system broadcast message:

[0148] Wherein, LpwusOffset represents a first offset, and the first offset is related to the UE's MR activation duration and the second offset. For example, the first offset may be greater than or equal to the sum of the UE's MR activation duration and the second offset.

[0149] The data type of the first offset may be an enumerated type. The first offset may include one or more of ms1xx (e.g., 120), ms2xx (e.g., 220), ms3xx (e.g., 320), ms4xx (e.g., 420), ms5xx (e.g., 520), ms6xx (e.g., 620), ms7xx (e.g., 720), and ms8xx (e.g., 820).

[0150] Alternatively, the data type of the first offset may be an integer. For example, LpwusPOffset may also be defined as LpwusPOffset::=INTEGER(0...1000), with the unit being ms.

[0151] Optionally, LpwusPOffset in the system broadcast message can also be defined as:

[0152] In some embodiments, the broadcast message may include a preset array for indicating N first offsets.

[0153] In other embodiments, the broadcast message may include multiple bits, each of which corresponds to a plurality of different preset offsets. A bit in the multiple bits being 0 indicates that the corresponding preset offset is not supported, and a bit in the multiple bits being 1 indicates that the corresponding preset offset is supported. The N first offsets include the preset offsets corresponding to the bits in the multiple bits that are 1.

[0154] In some embodiments, the N first offsets may be determined based on a plurality of preset offsets. The preset offsets may be integer or enumeration types. The preset offsets may be determined based on the UE's MR activation duration, or the preset offsets may be determined based on the UE's MR activation duration and a second offset.

[0155] 1002. The UE reports its MR capability information, where the MR capability information includes the MR startup duration.

[0156] The MR activation duration of the UE may refer to the total duration required for the MR of the UE to be awakened.

[0157] It should be noted that each UE within the coverage of the base station can report its own MR activation duration to the base station. The process of each UE reporting its own MR activation duration is as follows.

[0158] After the UE is powered on, it can report the UE's MR activation duration to the base station corresponding to the cell where it resides.

[0159] In some embodiments, multiple MR startup duration information may be predefined, and the MR startup duration information may be represented as an enumeration type or an integer. For example, if the MR startup duration information is an enumeration type, the predefined enumeration values ​​(also referred to as enumeration elements) may include {800ms, 700ms, 600ms, 500ms, 400ms, 300ms, 200ms, 100ms}. The UE may determine its actual MR startup duration based on its capabilities, then select a target enumeration value from the multiple predefined MR startup duration enumeration values ​​based on the actual MR startup duration, and report the target enumeration value to the base station.

[0160] Optionally, the target enumeration value may be an enumeration value greater than or equal to the actual MR activation duration of the UE among a plurality of predefined enumeration values ​​of MR activation durations.

[0161] For example, assuming that the predefined enumeration values ​​include {800ms, 700ms, 600ms, 500ms, 400ms, 300ms, 200ms, 100ms}, if the actual MR start duration of the UE itself is 589ms, the target enumeration value can be 600ms, 700ms or 800ms.

[0162] Optionally, the target enumeration value may be an enumeration value closest to the actual MR start duration of the UE among at least one enumeration value greater than or equal to the actual MR start duration of the UE among multiple enumeration values ​​of predefined MR start durations.

[0163] For example, assuming that the predefined enumeration values ​​include {800ms, 700ms, 600ms, 500ms, 400ms, 300ms, 200ms, 100ms}, if the actual MR start duration of the UE is 589ms, then the enumeration values ​​greater than or equal to the actual MR start duration of the UE may include 600ms, 700ms, and 800ms. Among them, 600ms is the enumeration value closest to the actual MR start duration of the UE, that is, the target enumeration value may be 600ms.

[0164] In other embodiments, the UE may directly report its actual MR activation duration to the base station. For example, if the UE's actual MR activation duration is 589 ms, the UE may report the actual MR activation duration (589 ms) to the base station.

[0165] 1003. The base station sends the MR start duration reported by the UE to the AMF.

[0166] The base station can receive the MR start duration reported by the UE (each UE under the coverage of the base station). When the base station initiates the RRC connection release process to convert the UE in the RRC connected state to the RRC idle state, the base station can send the MR start duration reported by the UE (for example, the target enumeration value or the actual MR start duration of the UE) to the AMF. Then, the base station can delete the MR start duration reported by the UE, that is, the base station does not save the MR start duration of the UE to save storage space. It can be understood that the base station may not delete the MR start duration reported by the UE.

[0167] After the AMF receives the MR start duration reported by the UE (each UE under the coverage of the base station) from the base station, it can save the UE's MR start duration. It is understood that the AMF can receive MR start durations reported by multiple UEs from the base station and save the MR start durations of the multiple UEs. It is understood that the MR start durations of multiple UEs can also be stored in other devices, and this embodiment of the present application is not limited to this.

[0168] 1004. The base station obtains a paging message from the UE, and determines a time domain position of the LPWUS according to a target PF and a target offset corresponding to the UE to be paged.

[0169] The base station may obtain the UE's paging message in the following two ways:

[0170] Method 1: The base station receives a paging message from the AMF. When the core network needs to send data or signaling to the terminal device, it can send a paging message to the base station through the AMF, and the base station can send a paging message to the terminal device to page the terminal device. The AMF can also send the MR start duration of the UE to be paged to the base station.

[0171] In method 2, the base station itself generates a paging message for the UE. For example, when cell system information changes, or when the base station needs to notify a terminal device to receive information such as an earthquake or tsunami warning system or a commercial mobile alert service, the base station can send a paging message to the terminal device to page the terminal device. The base station can also obtain the MR activation duration of the UE to be paged. For example, the base station can obtain the MR activation duration of the UE to be paged from the UE context.

[0172] After the base station receives the paging message from the UE, it can first calculate the target PF corresponding to the UE to be paged. The frame number of the target PF satisfies formula (1). Formula (1) can refer to the relevant description of the relevant concepts or technologies above and will not be repeated here.

[0173] Then, the base station can determine the time domain position of the LPWUS based on the target PF and target offset corresponding to the UE to be paged (for example, UE1). The time domain position of the LPWUS can refer to a moment or a time point. For example, the time domain position of the LPWUS can be the time domain position (moment or time point) of the starting position (starting moment) of the target PF ahead of the target offset (or the target offset and the second offset). In an embodiment of the present application, the time domain position of the LPWUS can be the starting point of a time period. The base station can continuously send LPWUS within the time period, and the UE can continuously receive LPWUS within the time period, thereby waking up the UE's MR. Alternatively, the base station can start a timer at the time domain position of the LPWUS (i.e., the starting point of a time period), and continuously send LPWUS during the timer to wake up the UE's MR. The UE can start a timer at the time domain position of the LPWUS (i.e., the starting point of a time period), and continuously receive LPWUS during the timer to wake up the UE's MR. The timing duration of the time period or timer can be one or more symbols or slots, which is not specifically limited in this application.

[0174] In some embodiments, the target offset corresponding to the UE is a first offset among N first offsets that is greater than or equal to the MR start duration of the UE; for example, assuming N=2, that is, the base station is configured with two first offsets, which are 800ms and 400ms respectively. If the MR start duration reported by the UE is 600ms, the target offset corresponding to the UE may be 800ms. Alternatively, the target offset corresponding to the UE is a first offset among N first offsets that is greater than or equal to the MR start duration of the UE and the second offset. For example, assuming N=2, that is, the base station is configured with two first offsets, which are 820ms and 420ms respectively, if the MR start duration reported by the UE is 600ms and the second offset is 20ms, the target offset corresponding to the UE may be 820ms.

[0175] In some embodiments, the target offset corresponding to the UE is the smallest first offset among the M first offsets, or in other words, the target offset corresponding to the UE is the first offset among the M first offsets that is closest to the MR start duration reported by the UE. The M first offsets belong to the N first offsets; each of the M first offsets is greater than or equal to the MR start duration of the UE. M is less than or equal to N, and M is an integer greater than or equal to 2. For example, assuming N = 2, that is, the base station is configured with two first offsets, 800 ms and 400 ms, respectively, and the MR start duration reported by the UE is 200 ms. Then, the first offsets that are greater than or equal to the MR start duration reported by the UE may include two (i.e., M = N = 2), namely, 800 ms and 400 ms. 400 ms is the first offset that is closest to the MR start duration reported by the UE, meaning that the target offset corresponding to the UE may be 400 ms. Alternatively, each of the M first offsets is greater than or equal to the sum of the MR start duration of the UE and the second offset. For example, assuming N = 2, that is, the base station configures two first offsets, 820ms and 420ms, respectively, the UE's MR start duration is 200ms, and the second offset is 20ms. Then, two first offsets greater than or equal to the sum of the UE's MR start duration and the second offset can be included (i.e., M = N = 2), namely, 820ms and 420ms. Of these, 420ms is the first offset closest to the MR start duration reported by the UE, meaning that the target offset can be 420ms.

[0176] In some embodiments, the target offset corresponding to the UE is greater than or equal to the UE's MR activation duration. In this case, since the target offset does not include the second offset, the base station can determine the time domain position of the LPWUS based on the target PF, target offset, and second offset corresponding to the UE to be paged.

[0177] In some embodiments, the target offset corresponding to the UE is greater than or equal to the sum of the UE's MR activation duration and the second offset. In this case, since the target offset already includes the second offset, the base station can determine the time domain position of the LPWUS based on the target PF and target offset corresponding to the UE to be paged.

[0178] 1005. The base station sends LPWUS.

[0179] For the PF / PO of the UE to be paged, the base station can send LPWUS for a duration (on duration) before or after the time domain position of the LPWUS corresponding to the PF / PO (i.e., the time domain position of the LPWUS determined in the above step (step 1004)) to wake up the MR of the UE to be paged.

[0180] The duration of LPWUS may be one or more symbols or slots, which is not specifically limited in this application.

[0181] 1006. The UE receives the LPWUS sent by the base station.

[0182] The UE can determine the target PF corresponding to the UE according to formula (1). The UE can determine the time domain position of the LPWUS according to its own target PF and target offset. In this way, the UE can align the time domain position of the LPWUS with the base station, so that when the base station sends the LPWUS for a duration before or after the time domain position of the LPWUS, the UE can receive the LPWUS for a duration before or after the time domain position of the LPWUS.

[0183] In the embodiment of the present application, the UE can monitor the LPWUS through the LR. The LR of the UE can be in a working state (non-sleeping state) all the time, or the LR of the UE can be in a working state (non-sleeping state) during a preset time period according to a preset rule, which is not specifically limited in this application.

[0184] The following takes the case where the base station is configured with two first offsets and the target PF corresponding to the UE to be paged is PF0 as an example to illustrate how the base station sends LPWUS and how the UE monitors LPWUS.

[0185] Assume that the UEs to be paged include UE1 and UE2, and UE1 and UE2 monitor the same PF (for example, PF0). When the base station is configured with two first offsets (that is, the number N of first offsets configured by the base station is 2), the target offset corresponding to UE1 can be a first offset of the two first offsets that is greater than or equal to the MR start-up duration of UE1, or the target offset corresponding to UE1 can be a first offset of the two first offsets that is greater than or equal to the MR start-up duration of UE1 and the second offset. The target offset corresponding to UE2 can be a first offset of the two first offsets that is greater than or equal to the MR start-up duration of UE2, or the target offset corresponding to UE2 can be a first offset of the two first offsets that is greater than or equal to the MR start-up duration of UE2 and the second offset. If the target offsets corresponding to UE1 and UE2 are different, the base station can send LPWUS at different time domain positions to wake up the MR of UE1 and the MR of UE2 respectively, so as to avoid the problem of power consumption waste caused by the UE with a shorter MR start-up duration starting the MR in advance.

[0186] In one possible example, the two first offsets configured by the base station are related to the UE's MR activation duration and the second offset. The target offset corresponding to the UE is greater than or equal to the sum of the UE's MR activation duration and the second offset. In this case, because the target offset already includes the second offset, the base station can determine the time domain position of the LPWUS based on the target PF and target offset corresponding to the UE to be paged.

[0187] As shown in Figure 11, the base station may send an LPWUS (first LPWUS) for a duration before or after the first position to wake up the MR of UE1. The base station may send an LPWUS (second LPWUS) for a duration before or after the second position to wake up the MR of UE2. The first position may be determined by the base station based on the target PF (PF0) and target offset (target offset 1) corresponding to UE1. For example, the first position may be a time domain position where the starting position of PF0 is advanced by a target offset 1 (for example, 820ms). The second position may be determined by the base station based on the target PF (PF0) and target offset (target offset 2) corresponding to UE2. For example, the second position may be a time domain position where the starting position of PF0 is advanced by a target offset 2 (for example, 420ms).

[0188] In another possible example, the two first offsets configured by the base station are related to the UE's MR activation duration. The target offset corresponding to the UE is greater than or equal to the UE's MR activation duration. In this case, since the target offset does not include the second offset, the base station can determine the time domain position of the LPWUS based on the target PF, target offset, and second offset corresponding to the UE to be paged.

[0189] As shown in Figure 12, the base station may send an LPWUS (first LPWUS) for a duration before or after the first position to wake up the MR of UE1. The base station may send an LPWUS (second LPWUS) for a duration before or after the second position to wake up the MR of UE2. The first position may be determined by the base station based on the target PF (PF0), target offset (target offset 3) and second offset corresponding to UE1. For example, the first position may be a time domain position where the starting position of PF0 is advanced by the target offset (e.g., 800ms) and the second offset (e.g., 20ms). The second position may be determined by the base station based on the target PF (PF0), target offset (target offset 4) and the second offset corresponding to UE2. For example, the second position may be a time domain position where the starting position of PF0 is advanced by the target offset 4 (e.g., 400ms) and the second offset (e.g., 20ms).

[0190] It is understandable that the UEs monitoring PF0 include not only the UEs to be paged (e.g., UE1 and UE2), but also multiple other UEs. For example, the UEs monitoring PF0 may also include UE3 and UE4. UE1-UE4 can all monitor LPWUS to determine whether it is necessary to wake up the MR. Assume that the MR startup duration corresponding to UE1 is 800ms, the MR startup duration corresponding to UE2 is 400ms, the MR startup duration corresponding to UE3 is 200ms, and the MR startup duration corresponding to UE4 is 100ms. The following describes how UE1-UE4 monitor LPWUS.

[0191] In one possible example, the target offset corresponding to the UE is greater than or equal to the sum of the UE's MR activation duration and the second offset. In this case, since the target offset already includes the second offset, the UE can determine the time domain position of the LPWUS based on the target PF and the target offset.

[0192] When the base station is configured with two first offsets (for example, 820ms and 420ms), the target offset corresponding to UE1 (target offset 1) can be 820ms, and the target offsets corresponding to UE2-UE4 (target offset 2) are the same, which can be 420ms.

[0193] As shown in Figure 11, UE1 can monitor the first LPWUS for a duration before or after the first position. UE2-UE4 can monitor the second LPWUS for a duration before or after the second position. The first position can be determined by UE1 based on its corresponding target PF (PF0) and target offset (target offset 1). For example, the first position can be a time domain position in which the starting position of PF0 is advanced by target offset 1 (for example, 820ms). The second position can be determined by UE2-UE4 based on its corresponding target PF (PF0) and target offset (the target offsets corresponding to UE2-UE4 are the same, for example, target offset 2). For example, the second position can be a time domain position in which the starting position of PF0 is advanced by target offset 2 (for example, 420ms).

[0194] In another possible example, the target offset corresponding to the UE is greater than or equal to the UE's MR activation duration. In this case, since the target offset does not include the second offset, the UE can determine the time domain position of the LPWUS based on the target PF, target offset, and second offset corresponding to the UE to be paged.

[0195] When the base station is configured with two first offsets (for example, 800ms and 400ms), the target offset corresponding to UE1 (target offset 3) may be 800ms, and the target offsets corresponding to UE2-UE4 (target offset 4) are the same, which may be 400ms.

[0196] As shown in Figure 12, UE1 can monitor the first LPWUS for a duration before or after the first position. UE2-UE4 can monitor the second LPWUS for a duration before or after the second position. The first position can be determined by UE1 based on its corresponding target PF (PF0), target offset (target offset 3) and second offset. For example, the first position can be a time domain position that is ahead of the starting position of PF0 by the target offset (for example, 800ms) and the second offset (for example, 20ms). The second position can be determined by UE2-UE4 respectively based on their corresponding target PF (PF0), target offset (the target offsets corresponding to UE2-UE4 are the same, for example, target offset 4) and the second offset. For example, the second position can be a time domain position that is ahead of the starting position of PF0 by the target offset 4 (for example, 400ms) and the second offset (for example, 20ms).

[0197] In some embodiments, if the MR activation duration indicated by the UE's MR capability information is greater than any of the N first offsets broadcast by the base station, the UE does not use the LPWUS function to receive LPWUS messages from the network device. The UE can use the existing paging monitoring mechanism to always enable MR to monitor its own paging messages. This avoids the problem of the UE missing paging messages due to not enabling MR in time, thereby reducing paging latency.

[0198] In addition, the base station may not send LPWUS for PFs (e.g., PF2) where there is no UE to be paged. In this way, each UE that monitors PF2 under the coverage of the base station may not receive LPWUS for a period of time before or after the time domain position of the LPWUS corresponding to PF2, and may not start MR to receive paging messages, thereby saving power consumption. Among them, the way in which the UE determines the time domain position of the LPWUS corresponding to PF2 can refer to the way in which the UE determines the time domain position of the LPWUS corresponding to PF0, and will not be repeated here.

[0199] 1007. The UE starts the MR according to the LPWUS, so as to monitor the PDCCH channel through the MR to determine whether there is a paging message of the UE.

[0200] The LPWUS payload can be used to indicate the identification ID (UE ID) of the terminal device to be paged, or to indicate one or more POs of the target PF and the subgroups corresponding to each PO. LPWUS can be used to wake up the terminal device to be paged, or LPWUS is used to wake up one or more POs of the target PF and the terminal devices in the subgroups corresponding to each PO.

[0201] After receiving the LPWUS, the UE may parse the LPWUS payload and determine whether its own identity is the same as the UE ID indicated in the LPWUS payload, or whether the UE belongs to the subgroup indicated in the LPWUS payload.

[0202] If the UE determines that its own identity is the same as the UE ID indicated by the LPWUS payload, or the UE belongs to the subgroup indicated by the LPWUS payload, the UE can turn on MR and monitor the PDCCH channel at the target PO through MR to determine whether there is a paging message for itself. Otherwise, the UE does not turn on MR to save power consumption.

[0203] Based on the method provided in the embodiment of the present application, the base station can broadcast N first offsets, and the base station can select a target offset from the N first offsets based on the MR start duration reported by the terminal device. The base station determines the time domain position of the LPWUS based on the target offset and target PF (the PF of the terminal device monitoring the paging message) corresponding to the terminal device, and sends the LPWUS to wake up the terminal device for a period of time before or after the time domain position of the LPWUS. The terminal device can select a target offset from the N first offsets based on the MR start duration supported by itself, and then determine the time domain position of the LPWUS based on its own corresponding target offset and target PF, thereby monitoring the LPWUS sent by the base station for a period of time before or after the time domain position of the LPWUS. Among them, multiple UEs with the same or similar MR start durations can correspond to the same first offset (target offset), that is, the base station can use one LPWUS to wake up the MRs of multiple UEs corresponding to the same first offset. The method provided in the embodiment of the present application can avoid the problem of power consumption waste caused by the UE starting the MR in advance, and can also reduce the paging delay. Furthermore, the base station does not need to send LPWUS at different time domain locations based on the actual MR activation duration of each UE to wake up the MR of the corresponding UE, which can save network resource overhead. The method provided in the embodiment of the application can achieve a balance between reducing power consumption, reducing paging delay, and saving network resource overhead.

[0204] In addition, the embodiment of the present application uses PF as an example to illustrate the time domain position of LPWUS, and PF can also be replaced by PO. For example, the base station can determine the time domain position of sending LPWUS (used to wake up UE1's LPWUS) based on the target PO (the PO at which UE1 monitors the paging message) and the target offset corresponding to the UE to be paged (for example, UE1). For example, the time domain position of LPWUS can be the time domain position of the starting position of the target PO advanced by the target offset and the second offset. The UE can determine the time domain position of sending LPWUS (used to wake up UE1's LPWUS) based on its own corresponding target PO (the PO at which UE1 monitors the paging message) and the target offset. For example, the time domain position of LPWUS can be the time domain position of the starting position of the target PO advanced by the target offset and the second offset.

[0205] In some other embodiments, within a DRX cycle, the base station may allocate UEs with the same or similar MR activation duration to the same PF / PO, and wake up the UEs in one PF / PO through one LPWUS.

[0206] As shown in FIG13 , an embodiment of the present application provides a LPWUS transmission method, which is described by taking a terminal device as a UE and a network device as a base station as an example, including the following steps:

[0207] 1301. The base station broadcasts the offset set and index information set supported by itself through a system broadcast message.

[0208] The system broadcast message includes an offset set and an index information set supported by the base station.

[0209] The offset set supported by the base station may include N first offsets. For the offset set supported by the base station, reference may be made to the relevant description in step 1001 and will not be repeated here.

[0210] The index information set may include N index information (index). Each first offset in the N first offsets corresponds to one index information in the N index information. The index information corresponding to each first offset is used to indicate the position of the PF. The position of the PF may refer to the position of the PF in a DRX cycle. The PF may be the PF used by the UE to monitor paging messages. The total number of PFs corresponding to the N index information is less than or equal to the number of PFs in a DRX cycle.

[0211] Optionally, the system broadcast message further includes a plurality of predefined MR startup duration information. Each MR startup duration information in the plurality of predefined MR startup duration information corresponds to an index information in the index information set.

[0212] The base station may allocate UEs with the same or similar MR activation durations to the same PF / PO based on the index information.

[0213] Exemplarily, when the number of PFs in a DRX cycle is greater than or equal to 8, the content indicated by the information carried by the system broadcast message may be as shown in Table 1.

[0214] Table 1

[0215] In Table 1, multiple MR start durations can be predefined, for example, eight MR start durations, including {100ms, 200ms, 300ms, 400ms, 500ms, 600ms, 700ms, 800ms}. The offset set supported by the base station may include eight (i.e., N=8) first offsets, and the index information set may include eight (i.e., N=8) index information. The eight first offsets in the offset set include {100ms, 200ms, 300ms, 400ms, 500ms, 600ms, 700ms, 800ms}; each of the eight first offsets may be associated with the MR start duration. The eight index information in the index information set may include {0, 1, 2, 3, 4, 5, 6, 7}.

[0216] In Table 1, each of the eight MR start-up durations corresponds to an index information. For example, when the MR start-up duration is 100ms, the index information corresponding to the MR start-up duration is 0; when the MR start-up duration of the UE is 100ms, the PF corresponding to the UE may be PF0; when the MR start-up duration is 200ms, the index information corresponding to the MR start-up duration is 1; when the MR start-up duration of the UE is 200ms, the PF corresponding to the UE may be PF1; when the MR start-up duration is 300ms, the index information corresponding to the MR start-up duration is 2; when the MR start-up duration of the UE is 300ms, the PF corresponding to the UE may be PF2; when the MR start-up duration is 400ms, the index information corresponding to the MR start-up duration is 3; when the MR start-up duration of the UE is 400ms, the PF corresponding to the UE may be PF 3; when the MR start-up duration is 500ms, the index information corresponding to the MR start-up duration is 4; when the MR start-up duration of the UE is 500ms, the PF corresponding to the UE may be PF4; when the MR start-up duration is 600ms, the index information corresponding to the MR start-up duration is 5; when the MR start-up duration of the UE is 600ms, the PF corresponding to the UE may be PF5; when the MR start-up duration is 700ms, the index information corresponding to the MR start-up duration is 6; when the MR start-up duration of the UE is 700ms, the PF corresponding to the UE may be PF6; when the MR start-up duration is 800ms, the index information corresponding to the MR start-up duration is 7; when the MR start-up duration of the UE is 800ms, the PF corresponding to the UE may be PF7.

[0217] In Table 1, each of the eight index information corresponds to a first offset. For example, when the index information is 0, the first offset corresponding to the index information is 100ms; when the index information is 1, the first offset corresponding to the index information is 200ms; when the index information is 2, the first offset corresponding to the index information is 300ms; when the index information is 3, the first offset corresponding to the index information is 400ms; when the index information is 4, the first offset corresponding to the index information is 500ms; when the index information is 5, the first offset corresponding to the index information is 600ms; when the index information is 6, the first offset corresponding to the index information is 700ms; and when the index information is 7, the first offset corresponding to the index information is 800ms.

[0218] The eight first offsets in Table 1 are described by taking the correlation between the first offset and the MR startup duration as an example.

[0219] If the eight first offsets are related to the MR startup duration and the second offset, the content indicated by the information carried in the system broadcast message may be as shown in Table 2.

[0220] Table 2

[0221] In Table 2, the eight first offsets may be determined according to the MR start duration and the second offset (eg, 20 ms). The eight first offsets in the offset set include {120 ms, 220 ms, 320 ms, 420 ms, 520 ms, 620 ms, 720 ms, 820 ms}.

[0222] When the index information is 0, the first offset corresponding to the index information is 120ms (i.e., 100ms+20ms); when the index information is 1, the first offset corresponding to the index information is 220ms (i.e., 200ms+20ms); when the index information is 2, the first offset corresponding to the index information is 320ms (i.e., 300ms+20ms); when the index information is 3, the first offset corresponding to the index information is 420ms (i.e., 400ms+20ms); when the index information is 4, the first offset corresponding to the index information is 520ms (i.e., 500ms+20ms); when the index information is 5, the first offset corresponding to the index information is 620ms (i.e., 600ms+20ms); when the index information is 6, the first offset corresponding to the index information is 720ms (i.e., 700ms+20ms); when the index information is 7, the first offset corresponding to the index information is 820ms (i.e., 800ms+20ms). The rest of Table 2 can refer to the relevant description of Table 1 and will not be repeated here.

[0223] Exemplarily, when the number of PFs in the DRX cycle is greater than or equal to 4, the content indicated by the information carried by the system broadcast message may be as shown in Table 3.

[0224] Table 3

[0225] In Table 3, multiple MR start durations may be predefined, for example, 8 MR start durations, including {100ms, 200ms, 300ms, 400ms, 500ms, 600ms, 700ms, 800ms}. The index information set may include N (for example, 4) index information, including: {0, 1, 2, 3}.

[0226] In Table 3, each of the eight MR start-up durations corresponds to an index information. For example, when the MR start-up duration is 100ms, the index information corresponding to the MR start-up duration is 0; when the MR start-up duration of the UE is 100ms, the PF corresponding to the UE may be PF0; when the MR start-up duration is 200ms, the index information corresponding to the MR start-up duration is 0; when the MR start-up duration of the UE is 200ms, the PF corresponding to the UE may be PF0; when the MR start-up duration is 300ms, the index information corresponding to the MR start-up duration is 1; when the MR start-up duration of the UE is 300ms, the PF corresponding to the UE may be PF1; when the MR start-up duration is 400ms, the index information corresponding to the MR start-up duration is 1; when the MR start-up duration of the UE is 400ms, the PF corresponding to the UE may be PF 1; when the MR start-up duration is 500ms, the index information corresponding to the MR start-up duration is 2; when the MR start-up duration of the UE is 500ms, the PF corresponding to the UE may be PF2; when the MR start-up duration is 600ms, the index information corresponding to the MR start-up duration is 2; when the MR start-up duration of the UE is 600ms, the PF corresponding to the UE may be PF2; when the MR start-up duration is 700ms, the index information corresponding to the MR start-up duration is 3; when the MR start-up duration of the UE is 700ms, the PF corresponding to the UE may be PF3; when the MR start-up duration is 800ms, the index information corresponding to the MR start-up duration is 3; when the MR start-up duration of the UE is 800ms, the PF corresponding to the UE may be PF3.

[0227] Optionally, when two or more predefined MR startup durations correspond to the same index value, the system broadcast message may carry only the larger of the two or more MR startup durations. For example, when the MR startup duration is 100ms, the index information corresponding to the MR startup duration is 0, and when the MR startup duration is 200ms, the index information corresponding to the MR startup duration is 0; then, the system broadcast message may carry only the 200ms MR startup duration.

[0228] In Table 3, the offset set supported by the base station may include N (e.g., 4) first offsets. When the four first offsets are related to the MR startup duration, the four first offsets in the offset set may include {200 ms, 400 ms, 600 ms, 800 ms}; when the four first offsets are related to the MR startup duration and a second offset (e.g., 20 ms), the four first offsets in the offset set may include {220 ms, 420 ms, 620 ms, 820 ms}.

[0229] In Table 3, each of the four index information may correspond to a first offset. For example, when the index information is 0, the first offset corresponding to the index information is 200ms / 220ms; when the index information is 1, the first offset corresponding to the index information is 400ms / 420ms; when the index information is 2, the first offset corresponding to the index information is 600ms / 620ms; and when the index information is 3, the first offset corresponding to the index information is 800ms / 820ms.

[0230] Exemplarily, when the number of PFs in the DRX cycle is greater than or equal to 2, the content indicated by the information carried by the system broadcast message may be as shown in Table 4.

[0231] Table 4

[0232] In Table 4, multiple MR start durations may be predefined, for example, 8 MR start durations, including {100ms, 200ms, 300ms, 400ms, 500ms, 600ms, 700ms, 800ms}. The index information set may include N (for example, 2) index information, including: {0, 1}.

[0233] In Table 4, each of the eight MR startup durations corresponds to an index. For example, when the MR startup duration is 100ms, the index corresponding to the MR startup duration is 0; when the MR startup duration is 200ms, the index corresponding to the MR startup duration is 0; when the MR startup duration is 300ms, the index corresponding to the MR startup duration is 0; when the MR startup duration is 400ms, the index corresponding to the MR startup duration is 0; when the MR startup duration is 500ms, the index corresponding to the MR startup duration is 1; when the MR startup duration is 600ms, the index corresponding to the MR startup duration is 1; when the MR startup duration is 700ms, the index corresponding to the MR startup duration is 1; and when the MR startup duration is 800ms, the index corresponding to the MR startup duration is 1. When the MR activation duration of the UE is 100ms, 200ms, 300ms or 400ms, the corresponding PF of the UE may be PF0; when the MR activation duration of the UE is 500ms, 600ms, 700ms or 800ms, the corresponding PF of the UE may be PF1.

[0234] Optionally, when two or more predefined MR startup durations correspond to the same index value, the system broadcast message may carry only the larger of the two or more MR startup durations. For example, when the MR startup duration is 100ms, 200ms, 300ms, or 400ms, and the index information corresponding to the MR startup duration is 0, the system broadcast message may carry only the MR startup duration of 400ms.

[0235] In Table 4, the offset set supported by the base station may include N (e.g., 2) first offsets. When the two first offsets are related to the MR startup duration, the two first offsets in the offset set may include {400 ms, 800 ms}; when the two first offsets are related to the MR startup duration and a second offset (e.g., 20 ms), the four first offsets in the offset set may include {420 ms, 820 ms}.

[0236] In Table 4, each of the two index information may correspond to a first offset. For example, when the index information is 0, the first offset corresponding to the index information is 400ms / 420ms; when the index information is 1, the first offset corresponding to the index information is 800ms / 820ms.

[0237] 1302. The UE reports its MR capability information, where the MR capability information includes the MR startup duration.

[0238] 1303. The base station sends the MR start duration reported by the UE to the AMF.

[0239] For steps 1302-1303, reference may be made to the relevant description of steps 1002-1003, which will not be repeated here.

[0240] 1304. The base station obtains a paging message from the UE, calculates a target PF corresponding to the UE to be paged, and determines a time domain position of the LPWUS according to the time domain position and target offset of the target PF corresponding to the UE to be paged.

[0241] In the embodiment of the present application, the base station may determine the target PF corresponding to the UE to be paged according to the index information corresponding to the MR activation duration of the UE to be paged.

[0242] The target offset corresponding to the UE to be paged is one of the N first offsets broadcast by the base station. The base station may determine index information (target index information) based on the MR activation duration corresponding to the UE to be paged, and then determine the target offset based on the target index information. The target offset is the first offset corresponding to the target index information.

[0243] Taking the information carried in the system broadcast message as shown in Table 1 as an example, assuming that the UE to be paged is UE1, if the MR activation duration of UE1 is 800ms, the index information corresponding to the MR activation duration (target index information) is 7, and the first offset corresponding to the index information is 800ms. That is, the target offset corresponding to UE1 is 800ms.

[0244] Taking the information carried in the system broadcast message as shown in Table 2 as an example, assuming that the UE to be paged is UE1, if the MR activation duration of UE1 is 800ms, the index information corresponding to the MR activation duration (target index information) is 7, and the first offset corresponding to the index information is 820ms. That is, the target offset corresponding to UE1 is 800ms.

[0245] For example, the base station can calculate the system frame number of the target PF corresponding to the UE in each DRX cycle according to formula (3). (SFN+PF_offset)mod T=(T div N)*(index mod N) (3)

[0246] Where SFN represents the system frame number. PF_offset represents the offset of the PF itself. T represents the DRX cycle, which can be, for example, 32, 64, 128, or 256 radio frames. N represents the number of PFs within the DRX cycle configured by the network. Index indicates the position of the PF. Where index <= N.

[0247] For example, if index is 0, it means that the target PF corresponding to the UE (ie, the PF where the UE monitors the paging message) is the first PF in the DRX cycle, ie, PF0. If index is 1, it means that the PF corresponding to the UE is the second PF in the DRX cycle, ie, PF1.

[0248] The base station can allocate UEs with the same or similar MR activation duration to the same PF / PO and wake up the UEs in one PF / PO through one LPWUS.

[0249] The base station can determine the time domain position of the LPWUS based on the target PF and target offset corresponding to the UE to be paged (e.g., UE1). The time domain position of the LPWUS may refer to a moment or a point in time. For example, the time domain position of the LPWUS may be a time domain position (moment or point in time) that is a target offset (or target offset and second offset) ahead of the starting position (starting moment) of the target PF. For details, please refer to the relevant description of step 1004, which will not be repeated here.

[0250] 1305. The base station sends LPWUS.

[0251] For the PF / PO of the UE to be paged, the base station can send LPWUS for a duration (on duration) before or after the time domain position of the LPWUS corresponding to the PF / PO (i.e., the time domain position of the LPWUS determined in the above step (step 1304)) to wake up the MR of the UE to be paged.

[0252] The duration of LPWUS may be one or more symbols or slots, which is not specifically limited in this application.

[0253] 1306. The UE receives the LPWUS sent by the base station.

[0254] In the embodiment of the present application, the UE can determine its corresponding target PF based on the index information corresponding to its own MR startup duration. Taking the information carried by the system broadcast message as shown in Table 1 as an example, if the MR startup duration of UE1 is 800ms, the index information corresponding to the MR startup duration (target index information) is 7, and the PF corresponding to UE1 can be PF7.

[0255] The UE can calculate the system frame number of the target PF corresponding to the UE according to formula (3). For formula (3), reference can be made to the relevant description in step 1304 and will not be repeated here.

[0256] In the embodiment of the present application, the UE (each UE under the coverage of the base station) can determine the time domain position of receiving the LPWUS according to the time domain position and target offset of the target PF corresponding to the UE.

[0257] The UE may determine index information (target index information) based on its corresponding MR activation duration, and then determine a target offset based on the target index information. The target offset is the first offset corresponding to the target index information.

[0258] Taking the information carried in the system broadcast message as shown in Table 1 as an example, if the MR startup duration of UE1 is 800ms, the index information corresponding to the MR startup duration (target index information) is 7, and the first offset corresponding to the index information is 800ms, that is, the target offset corresponding to UE1 is 800ms. Taking the information carried in the system broadcast message as shown in Table 2 as an example, if the MR startup duration of UE1 is 800ms, the index information corresponding to the MR startup duration (target index information) is 7, and the first offset corresponding to the index information is 820ms, that is, the target offset corresponding to UE1 is 800ms.

[0259] The following uses the information carried in the system broadcast message as shown in Table 3 as an example to illustrate how the base station sends LPWUS and how the UE monitors LPWUS.

[0260] Based on Table 3, it can be seen that the base station can allocate UEs with MR startup durations of 100ms and 200ms to PF0, allocate UEs with MR startup durations of 300ms and 400ms to PF1, allocate UEs with MR startup durations of 500ms and 600ms to PF2, and allocate UEs with MR startup durations of 700ms and 800ms to PF3.

[0261] Assume that the UEs to be paged include UE1 and UE2. If the MR start duration of UE1 is 100ms and that of UE2 is 200ms, the target PF corresponding to UE1 and UE2 is PF1. Assume that the UEs to be paged include UE3 and UE4. If the MR start duration of UE3 is 300ms and that of UE4 is 400ms, the target PF corresponding to UE3 and UE4 is PF2.

[0262] In one possible example, the target offset corresponding to the UE is greater than or equal to the sum of the UE's MR activation duration and the second offset. In this case, since the target offset already includes the second offset, the base station can determine the time domain position of the LPWUS based on the target PF and target offset corresponding to the UE to be paged.

[0263] As shown in Figure 14A, the base station may send an LPWUS (first LPWUS) for a duration before or after the first position to wake up the MR of UE1 / UE2. The base station may send an LPWUS (second LPWUS) for a duration before or after the second position to wake up the MR of UE3 / UE4. The first position may be determined based on the target PF (PF0) and target offset (target offset 1) corresponding to UE1 / UE2. For example, the first position may be a time domain position where the starting position of the target PF (PF0) is advanced by a target offset 1 (e.g., 820ms). The second position may be determined based on the target PF (PF1) and target offset (target offset 2) corresponding to UE3 / UE4. For example, the second position may be a time domain position where the starting position of PF1 is advanced by a target offset 2 (e.g., 420ms).

[0264] In another possible example, the target offset corresponding to the UE is greater than or equal to the UE's MR activation duration. In this case, since the target offset does not include the second offset, the base station can determine the time domain position of the LPWUS based on the target PF, target offset, and second offset corresponding to the UE to be paged.

[0265] As shown in Figure 14B, the base station may send an LPWUS (first LPWUS) for a duration before or after the first position to wake up the MR of UE1 / UE2. The base station may send an LPWUS (second LPWUS) for a duration before or after the second position to wake up the MR of UE3 / UE4. The first position may be determined based on the target PF (PF0), target offset (target offset 3), and second offset corresponding to UE1 / UE2. For example, the first position may be a time domain position where the starting position of PF0 is advanced by a target offset (e.g., 800ms) and a second offset (e.g., 20ms). The second position may be determined based on the target PF (PF1), target offset (target offset 4), and second offset corresponding to UE3 / UE4. For example, the second position may be a time domain position where the starting position of PF1 is advanced by a target offset 4 (e.g., 400ms) and a second offset (e.g., 20ms).

[0266] The following describes how UE1-UE4 monitor LPWUS.

[0267] In one possible example, the target offset corresponding to the UE is greater than or equal to the sum of the UE's MR activation duration and the second offset. In this case, since the target offset already includes the second offset, the UE can determine the time domain position of the LPWUS based on the target PF and the target offset.

[0268] When the base station is configured with two first offsets (for example, 220ms and 420ms), the target offset (target offset 1) corresponding to UE1 / UE2 can be 220ms, and the target offset (target offset 2) corresponding to UE3 / UE4 is the same, which can be 420ms.

[0269] As shown in Figure 14A, UE1 / UE2 can monitor the first LPWUS for a duration before or after the first position. UE3 / UE4 can monitor the second LPWUS for a duration before or after the second position. The first position can be determined by UE1 / UE2 based on its corresponding target PF (PF0) and target offset (the target offsets corresponding to UE1 / UE2 are the same, for example, target offset 1). For example, the first position can be a time domain position where the starting position of PF0 is advanced by target offset 1 (for example, 220ms). The second position can be determined by UE3 / UE4 based on its corresponding target PF (PF1) and target offset (the target offsets corresponding to UE3 / UE4 are the same, for example, target offset 2). For example, the second position can be a time domain position where the starting position of PF1 is advanced by target offset 2 (for example, 420ms).

[0270] In another possible example, the target offset corresponding to the UE is greater than or equal to the UE's MR activation duration. In this case, since the target offset does not include the second offset, the UE can determine the time domain position of the LPWUS based on the target PF, target offset, and second offset corresponding to the UE to be paged.

[0271] When the base station is configured with two first offsets (for example, 200ms and 400ms), the target offset (target offset 3) corresponding to UE1 / UE2 can be 200ms, and the target offset (target offset 4) corresponding to UE3 / UE4 is the same, which can be 400ms.

[0272] As shown in Figure 14B, UE1 / UE2 can monitor the first LPWUS for a duration before or after the first position. UE3 / UE4 can monitor the second LPWUS for a duration before or after the second position. The first position can be determined by UE1 / UE2 based on its corresponding target PF (PF0), target offset (the target offsets corresponding to UE1 / UE2 are the same, for example, target offset 3) and second offset. For example, the first position can be a time domain position where the starting position of PF0 is advanced by the target offset (for example, 200ms) and the second offset (for example, 20ms). The second position can be determined by UE3 / UE4 based on its corresponding target PF (PF1), target offset (the target offsets corresponding to UE3 / UE4 are the same, for example, target offset 4) and the second offset. For example, the second position can be a time domain position where the starting position of PF1 is advanced by the target offset 4 (for example, 400ms) and the second offset (for example, 20ms).

[0273] In the embodiment of the present application, the UE can monitor the LPWUS through the LR. The LR of the UE can be in a working state (non-sleeping state) all the time, or the LR of the UE can be in a working state (non-sleeping state) during a preset time period according to a preset rule, which is not specifically limited in this application.

[0274] 1307. The UE starts MR according to the LPWUS, so as to monitor the PDCCH channel through the MR to determine whether there is a paging message for the UE.

[0275] For the specific process, please refer to the relevant description of step 1007, which will not be repeated here.

[0276] Based on the method provided in the embodiments of the present application, the base station can assign UEs with the same or similar MR activation duration to a single PF and use an LPWUS to wake up the MR of any UE on the PF. This can save network resource overhead and reduce paging latency and power consumption.

[0277] In some further embodiments, within a DRX cycle, the base station may allocate UEs with the same or similar MR activation durations to multiple consecutive PFs, and wake up the UEs in the multiple consecutive PFs through one LPWUS.

[0278] As shown in FIG15 , an embodiment of the present application provides a LPWUS transmission method, which is described by taking a terminal device as a UE and a network device as a base station as an example, including the following steps:

[0279] 1501. The base station broadcasts the offset set, index information set, and first parameter set supported by the base station through a system broadcast message.

[0280] The system broadcast message carries an offset set, an index information set and a first parameter set supported by the base station.

[0281] The offset set supported by the base station may include N first offsets. For the offset set supported by the base station, reference may be made to the relevant description in step 1001 and will not be repeated here.

[0282] The index information set may include N index information (index). The index information set can refer to the relevant description in step 1301 and will not be described in detail here.

[0283] The first parameter set includes N first parameters (e.g., DistrLen), each first parameter corresponding to one index information in the N index information. Each first parameter is used to indicate the number of PFs (number), and the number of PFs may refer to the number of consecutive PFs. The consecutive PFs may refer to two or more adjacent PFs in a DRX cycle.

[0284] Optionally, the system broadcast message further includes a plurality of predefined MR startup duration information. Each MR startup duration information in the plurality of predefined MR startup duration information corresponds to an index information in the index information set. Each first parameter may also correspond to an MR startup duration information in the plurality of MR startup duration information.

[0285] The base station may allocate UEs with the same or similar MR activation durations to multiple consecutive PFs based on the index information and the first parameter.

[0286] It should be noted that when there are a large number of UEs residing in a certain cell of the base station that are in a certain MR start-up duration interval (for example, the first MR start-up duration interval) (for example, exceeding a preset threshold), only the UEs in the first MR start-up duration interval (for example, 200ms interval / 200ms-400ms interval, etc.) are allocated to one PF (for example, PF1). This will result in too many UEs that can be paged under the PF (for example, PF1), which may cause some UEs to fail to be paged in time under the PF, resulting in delay problems and power consumption waste problems (the UE starts the MR in order to receive the paging message, but the MR does not receive the paging message, and may need to wait until the next DRX cycle to receive the paging message, resulting in MR power consumption waste).

[0287] In some embodiments of the present application, the UEs within the first MR activation duration interval can be evenly distributed to multiple consecutive PFs to avoid too many UEs that can be paged under a certain PF, thereby avoiding the delay problem and power consumption waste caused by some UEs not being able to be paged in time under the PF.

[0288] For example, when the number of PFs in the DRX cycle is greater than or equal to 8, the content indicated by the information carried by the system broadcast message may be as shown in Table 5.

[0289] Table 5

[0290] In Table 5, multiple MR start durations can be predefined, for example, eight MR start durations, including {100ms, 200ms, 300ms, 400ms, 500ms, 600ms, 700ms, 800ms}. The offset set supported by the base station may include eight (i.e., N=8) first offsets, and the index information set may include eight (i.e., N=8) index information. The eight first offsets in the offset set include {100ms, 200ms, 300ms, 400ms, 500ms, 600ms, 700ms, 800ms}. The eight index information in the index information set may include {0, 1, 2, 3, 4, 5, 6, 7}. N (e.g., eight) DistrLens in the first parameter set may include {0, 2, 0, 0, 0, 0, 0}.

[0291] In Table 5, DistrLen is 0, indicating that the number of PFs corresponding to the UE in one DRX cycle is 1. DistrLen is 2, indicating that the number of PFs corresponding to the UE in one DRX cycle is 2.

[0292] Optionally, DistrLen can be 1, indicating that the number of PFs corresponding to the UE in one DRX cycle is 1.

[0293] In Table 5, each of the eight index information in the index information set can be associated with one of the N DistrLens. Each DistrLen can also correspond to one of the eight MR startup durations. For example, the corresponding relationship between the eight MR startup durations, the eight index information, and the eight DistrLens can be expressed as: {{100ms,0,0},{200ms,1,2},{300ms,2,0},{400ms,3,0},{500ms,4,0},{600ms,5,0},{700ms,6,0},{800ms,7,0}}. Among them, {100ms,0,0} means that when the MR startup duration is 100ms, the index information corresponding to the MR startup duration is 0, and the DistrLen corresponding to the index information is 100ms; {200ms,1,2} means that when the MR startup duration is 200ms, the index information corresponding to the MR startup duration is 1, and the DistrLen corresponding to the index information is 2; and so on.

[0294] In Table 5, each of the eight index information corresponds to a first offset. For example, when the index information is 0, the first offset corresponding to the index information is 100ms; when the index information is 1, the first offset corresponding to the index information is 200ms; when the index information is 2, the first offset corresponding to the index information is 300ms; when the index information is 3, the first offset corresponding to the index information is 400ms; when the index information is 4, the first offset corresponding to the index information is 500ms; when the index information is 5, the first offset corresponding to the index information is 600ms; when the index information is 6, the first offset corresponding to the index information is 700ms; and when the index information is 7, the first offset corresponding to the index information is 800ms.

[0295] 1502. The UE reports its MR capability information, where the MR capability information includes the MR startup duration.

[0296] 1503. The base station sends the MR start duration reported by the UE to the AMF.

[0297] For steps 1502-1503, reference may be made to the relevant description of steps 1002-1003, which will not be repeated here.

[0298] 1504. The base station obtains the paging message of the UE, calculates the target PF corresponding to the UE to be paged, and determines the time domain position of the LPWUS according to the time domain position and target offset of the target PF corresponding to the UE to be paged.

[0299] In the embodiment of the present application, the base station may determine the target PF corresponding to the UE to be paged according to the index information corresponding to the MR activation duration of the UE to be paged and the first parameter (DistrLen) corresponding to the index information.

[0300] For example, taking the information carried by the system broadcast message as shown in Table 5 as an example, assuming that the UE to be paged is UE1, the MR startup duration of UE1 is 200ms, the index information corresponding to the MR startup duration is 1, and the DistrLen corresponding to the index information is 2, then the target PF corresponding to the UE to be paged may include 2 consecutive PFs (for example, PF0 and PF1).

[0301] For example, the base station can calculate the system frame number of the target PF corresponding to the UE in each DRX cycle according to formula (4). (SFN+PF_offset)mod T=(T div N)*((index+offset_1)mod N) (4)

[0302] Wherein, offset_1=UE_ID mod DistrLen, for example, DistrLen=2, when UE_ID is 1, the range of offset_1 is 0, 1. For other parameters, please refer to the description of formula (3) above and will not be repeated here.

[0303] The base station can determine the time domain position of the LPWUS based on the target PF and target offset corresponding to the UE to be paged (e.g., UE1). The time domain position of the LPWUS may refer to a moment or a point in time. For example, the time domain position of the LPWUS may be a time domain position (moment or point in time) that is a target offset (or target offset and second offset) ahead of the starting position (starting moment) of the target PF. For details, please refer to the relevant description of step 1004, which will not be repeated here.

[0304] 1505. The base station sends an LPWUS to the UE.

[0305] For the PF / PO of the UE to be paged, the base station can send LPWUS for a duration (on duration) before or after the time domain position of the LPWUS corresponding to the PF / PO (i.e., the time domain position of the LPWUS determined in the above step (step 1504)) to wake up the MR of the UE to be paged.

[0306] The duration of LPWUS may be one or more symbols or slots, which is not specifically limited in this application.

[0307] 1506. The UE receives the LPWUS sent by the base station.

[0308] In an embodiment of the present application, the UE (each UE under the coverage of the base station) can determine its corresponding target PF based on the index information corresponding to its own MR startup duration and the first parameter (DistrLen) corresponding to the index information.

[0309] The UE can calculate the system frame number of the target PF corresponding to the UE in each DRX cycle according to formula (4).

[0310] Then, the UE may determine the time domain position of the LPWUS according to the target PF and target offset corresponding to the UE.

[0311] The UE may determine the index information (target index information) based on the MR activation duration corresponding to itself, and then determine the target offset based on the target index information. The target offset is the first offset corresponding to the target index information. The specific process can be referred to the relevant description of step 1306 and will not be repeated here.

[0312] In the embodiment of the present application, the UE can monitor the LPWUS through the LR. The LR of the UE can be in a working state (non-sleeping state) all the time, or the LR of the UE can be in a working state (non-sleeping state) during a preset time period according to a preset rule, which is not specifically limited in this application.

[0313] 1507. The UE starts MR according to the LPWUS, so as to monitor the PDCCH channel through the MR to determine whether there is a paging message for the UE.

[0314] For the specific process, please refer to the relevant description of step 1007, which will not be repeated here.

[0315] Based on the method provided in the embodiments of the present application, the base station can assign multiple UEs with the same or similar MR activation duration to multiple consecutive PFs, and use a single LPWUS to wake up the MR of any UE on these multiple PFs. This can save network resource overhead and reduce paging latency and power consumption.

[0316] In the case of dividing each functional module according to each function, Figure 16 shows a possible structural diagram of the device 16 involved in the above embodiment, which can be a terminal device, and the terminal device includes: a receiving unit 1601 and a sending unit 1602. In the embodiment of the present application, the receiving unit 1601 is used to receive a first message from the network device, and the first message includes N first offsets, where N is an integer greater than or equal to 1; the receiving unit 1601 is also used to monitor the LPWUS from the network device at the time domain position of the LPWUS, and the LPWUS is used to wake up the MR of the terminal device; wherein the time domain position of the LPWUS is determined based on the N first offsets and the target paging frame PF; wherein the target PF is the PF of the paging message monitored by the terminal device. Optionally, the sending unit 1602 is used to send a second message to the network device, and the second message includes capability information of the main receiver MR of the terminal device.

[0317] In the method embodiment shown in FIG10 , the receiving unit 1601 is configured to support the terminal device in executing the corresponding processes in processes 1001 and 1006 in FIG10 . The sending unit 1602 is configured to support the terminal device in executing the corresponding process in process 1002 in FIG10 . All relevant contents of each step involved in the above method embodiment can be referred to in the functional description of the corresponding functional module and will not be repeated here.

[0318] In the method embodiment shown in FIG13 , the receiving unit 1601 is configured to support the terminal device in executing the corresponding processes in processes 1301 and 1306 in FIG13 . The sending unit 1602 is configured to support the terminal device in executing the corresponding process in process 1302 in FIG13 . All relevant contents of each step involved in the above method embodiment can be referred to in the functional description of the corresponding functional module and will not be repeated here.

[0319] In the method embodiment shown in FIG15 , the receiving unit 1601 is configured to support the terminal device in executing the corresponding processes in processes 1501 and 1506 in FIG15 . The sending unit 1602 is configured to support the terminal device in executing the corresponding process in process 1502 in FIG15 . All relevant contents of each step involved in the above method embodiment can be referred to in the functional description of the corresponding functional module and will not be repeated here.

[0320] In the case of dividing each functional module according to each function, Figure 17 shows a possible structural diagram of the device 17 involved in the above embodiment. The device can be a network device, and the network device includes: a sending unit 1701 and a receiving unit 1702. In the embodiment of the present application, the sending unit 1701 is used to send a first message, and the first message includes N first offsets, where N is an integer greater than or equal to 1; the sending unit 1701 is also used to send LPWUS at the time domain position of LPWUS, and LPWUS is used to wake up the MR of the terminal device; wherein the time domain position of LPWUS is determined based on the N first offsets and the target paging frame PF; wherein the target PF is the PF of the terminal device monitoring the paging message. The receiving unit 1702 is used to receive a second message from the terminal device, and the second message includes capability information of the main receiver MR of the terminal device.

[0321] In the method embodiment shown in FIG10 , the sending unit 1701 is configured to support the network device in executing process 1001 in FIG10 . The receiving unit 1702 is configured to support the network device in executing the portion of process 1002 in FIG10 that involves the network device. All relevant content of each step involved in the above method embodiment can be referred to in the functional description of the corresponding functional module and will not be repeated here.

[0322] In the method embodiment shown in FIG13 , a sending unit 1701 is configured to support a network device in executing process 1301 in FIG13 . A receiving unit 1702 is configured to support a network device in executing the portion of process 1302 in FIG13 that involves the network device. All relevant details of each step involved in the above method embodiment can be referenced in the functional description of the corresponding functional module and are not further described here.

[0323] In the method embodiment shown in FIG15 , a sending unit 1701 is configured to support a network device in executing process 1501 in FIG15 . A receiving unit 1702 is configured to support a network device in executing the portion of process 1502 in FIG15 that involves the network device. All relevant details of each step involved in the above method embodiment can be referenced in the functional description of the corresponding functional module and are not further described here.

[0324] For example, the terminal devices or network devices in the above-mentioned various apparatus embodiments and the terminal devices or network devices in the method embodiments can completely correspond to each other, and the corresponding steps are performed by the corresponding modules or units. For example, the communication module (transceiver) can perform the sending and / or receiving steps in the method embodiment, and the other steps except sending and receiving can be performed by the processing unit (processor). The functions of the specific units can refer to the corresponding method embodiments. The sending unit and the receiving unit can form a transceiver unit, and the transmitter and the receiver can form a transceiver to jointly realize the sending and receiving functions; there can be one or more processors.

[0325] Exemplarily, the functions of the above-mentioned terminal device or network device can be implemented by a chip, and the processing unit can be implemented by hardware or software. When implemented by hardware, the processing unit can be a logic circuit, an integrated circuit, etc.; when implemented by software, the processing unit can be a general-purpose processor, which is implemented by reading the software code stored in a storage unit. The storage unit can be integrated in the processor or located outside the processor and exist independently.

[0326] The terminal devices or network devices in the above-mentioned various apparatus embodiments completely correspond to the terminal devices and network devices in the method embodiments, and the corresponding modules or units perform the corresponding steps. For example, the sending module (transmitter) performs the sending steps in the method embodiment, and the receiving module (receiver) performs the receiving steps in the method embodiment. Other steps except sending and receiving can be performed by the processing module (processor). The functions of specific modules can refer to the corresponding method embodiments. The sending module and the receiving module can form a transceiver module, and the transmitter and the receiver can form a transceiver to jointly realize the transceiver function; there can be one or more processors.

[0327] The division of modules or units in the embodiments of the present application is schematic and is only a logical functional division. In actual implementation, there may be other division methods. In addition, the functional modules in the various embodiments of the present application can be integrated into a processor, or can exist physically separately, or two or more modules can be integrated into one module. The above-mentioned integrated modules can be implemented in the form of hardware or in the form of software functional modules. For example, in the embodiments of the present application, the receiving unit and the sending unit can be integrated into the transceiver unit.

[0328] The methods provided in the embodiments of the present application can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, they 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 program instructions are loaded and executed on a computer, the process or function described in the embodiments of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user device, or other programmable device. The computer instructions can 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 can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital video disc (DVD)), or a semiconductor medium (eg, a solid state drive (SSD)).

[0329] Obviously, those skilled in the art may make various changes and modifications to the embodiments of the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations.

Claims

1. A method for transmitting a low power wake-up signal LPWUS, characterized in that: include: The terminal device receives a first message from the network device, where the first message includes N first offsets, where N is an integer greater than or equal to 1; The terminal device monitors the LPWUS from the network device at the time domain position of the LPWUS, where the LPWUS is used to wake up the MR of the terminal device; The time domain position of the LPWUS is determined based on the N first offsets and the target paging frame PF; wherein the target PF is the PF of the paging message monitored by the terminal device.

2. The method according to claim 1, characterized in that The time domain position of the LPWUS is determined according to the N first offsets and the target paging frame PF, including: The time domain position of the LPWUS is determined based on the target offset and the target PF, the target offset is determined from the N first offsets based on the capability information of the MR of the terminal device, and the target offset is used to indicate the offset between the time domain position of the LPWUS and the target PF.

3. The method according to claim 1 or 2, characterized in that The method further comprises: The terminal device sends a second message to the network device, where the second message includes capability information of a main receiver MR of the terminal device.

4. The method according to claim 2 or 3, characterized in that The MR capability information includes the MR startup time, The target offset is greater than or equal to the MR start duration; or The target offset is greater than or equal to the sum of the MR startup duration and the second offset.

5. The method according to claim 4, characterized in that The target offset is the smallest first offset among the M first offsets, the M first offsets belonging to the N first offsets; M is an integer less than or equal to N; Each of the M first offsets is greater than or equal to the MR startup duration; or each of the M first offsets is greater than or equal to the sum of the MR startup duration and a second offset.

6. The method according to any one of claims 1 to 5, characterized in that The first message is a system broadcast message.

7. The method according to any one of claims 1 to 6, characterized in that The terminal device monitors the LPWUS from the network device at the time domain position of the LPWUS, including: The terminal device listens to the LPWUS from the network device for a duration before or after the time domain position of the LPWUS.

8. The method according to any one of claims 1 to 7, characterized in that If the MR startup duration indicated by the MR capability information of the terminal device is greater than any one of the N first offsets, the terminal device does not receive the LPWUS from the network device.

9. A method for transmitting a low power consumption wake-up signal LPWUS, characterized in that: include: The network device sends a first message, where the first message includes N first offsets, where N is an integer greater than or equal to 1; The network device sends an LPWUS at a time domain position of the LPWUS, where the LPWUS is used to wake up the MR of the terminal device; The time domain position of the LPWUS is determined based on the N first offsets and the target paging frame PF; wherein the target PF is the PF of the paging message monitored by the terminal device.

10. The method according to claim 9, characterized in that The time domain position of the LPWUS is determined according to the N first offsets and the target paging frame PF, including: The time domain position of the LPWUS is determined based on the target offset and the target PF, the target offset is determined from the N first offsets based on the capability information of the MR of the terminal device, and the target offset is used to indicate the offset between the time domain position of the LPWUS and the target PF.

11. The method according to claim 9 or 10, characterized in that The method further comprises: The network device receives a second message from the terminal device, where the second message includes capability information of a main receiver MR of the terminal device.

12. The method according to claim 10 or 11, characterized in that The MR capability information includes the MR startup time, The target offset is greater than or equal to the MR start duration; or The target offset is greater than or equal to the sum of the MR startup duration and the second offset.

13. The method according to claim 12, characterized in that The target offset is the smallest first offset among the M first offsets, the M first offsets belonging to the N first offsets; M is an integer less than or equal to N; Each of the M first offsets is greater than or equal to the MR startup duration; or each of the M first offsets is greater than or equal to the sum of the MR startup duration and a second offset.

14. The method according to any one of claims 9 to 13, characterized in that: The first message is a system broadcast message.

15. The method according to any one of claims 9 to 14, characterized in that: The network device sends the LPWUS at the time domain position of the LPWUS, including: The network device transmits the LPWUS from the network device for a duration before or after the time domain position of the LPWUS.

16. The method according to any one of claims 9 to 15, characterized in that: The method further comprises: The network device sends the capability information of the MR of the terminal device to the access and mobility management function AMF network element.

17. A method for transmitting a low power consumption wake-up signal LPWUS, characterized in that: include: The terminal device receives a first message from the network device, where the first message includes N index information and N first offsets, where the N index information and the N first offsets correspond one to one, and each index information in the N index information is used to indicate a position of a paging frame PF, where N is an integer greater than or equal to 1; The terminal device monitors the LPWUS at the time domain position of the LPWUS, where the LPWUS is used to wake up the main receiver MR of the terminal device; The time domain position of the LPWUS is determined according to the N index information and the N first offsets.

18. The method according to claim 17, characterized in that The time domain position of the LPWUS is determined according to the N index information and the N first offsets, including: The time domain position of the LPWUS is determined based on the target offset and target PF corresponding to the terminal device, the target PF is determined based on the target index information, the target index information is determined based on the N index information, the target offset is determined based on the N first offsets, and the target offset is used to indicate the offset between the time domain position of the LPWUS and the target PF.

19. The method according to claim 18, characterized in that The target PF is the PF of a plurality of terminal devices that monitor paging messages with the same or similar MR startup duration as that of the terminal device.

20. The method according to claim 17 or 18, characterized in that The target PF satisfies the following formula: (SFN+PF_offset) mod T = (T div N) * (index mod N) SFN represents the system frame number, PF_offset represents the offset of the PF itself, T represents the discontinuous reception DRX cycle, N represents the number of PFs in the DRX cycle, index represents the position of the target PF in the DRX cycle, and index<=N.

21. The method according to any one of claims 17 to 20, characterized in that: The first message further includes N first parameters, and the N first parameters correspond one-to-one to the N index information; The target PF is determined based on the target index information including: The target PF is determined based on the target index information and the target first parameter, and the target first parameter is determined based on the N first parameters. The target index information is used to indicate the starting position of the target PF, and the target first parameter is used to indicate the number of the target PFs.

22. The method according to claim 21, characterized in that The target PF satisfies the following formula: (SFN+PF_offset) mod T = (T div N) * ((index+offset_1) mod N) Among them, SFN represents the system frame number, PF_offset represents the offset of the PF itself, T represents the DRX cycle, N represents the number of PFs in the DRX cycle, index represents the starting position of the target PF in the DRX cycle, index<=N, offset_1=UE_ID mod DistrLen, DistrLen represents the number of the target PF, and UE_ID represents the identifier of the terminal device.

23. A method for transmitting a low power consumption wake-up signal LPWUS, characterized in that: include: The network device sends a first message, where the first message includes N index information and N first offsets, where the N index information and the N first offsets correspond one to one, and each index information in the N index information is used to indicate a position of a paging frame PF, where N is an integer greater than or equal to 1; The network device sends an LPWUS at a time domain position of the LPWUS, where the LPWUS is used to wake up a main receiver MR of the terminal device; The time domain position of the LPWUS is determined according to the N index information and the N first offsets.

24. The method according to claim 23, wherein The time domain position of the LPWUS is determined according to the N index information and the N first offsets, including: The time domain position of the LPWUS is determined based on the target offset and target PF corresponding to the terminal device, the target PF is determined based on the target index information, the target index information is determined based on the N index information, the target offset is determined based on the N first offsets, and the target offset is used to indicate the offset between the time domain position of the LPWUS and the target PF.

25. The method according to claim 24, characterized in that The target PF is the PF of a plurality of terminal devices that monitor paging messages with the same or similar MR startup duration as that of the terminal device.

26. The method according to claim 23 or 24, characterized in that The target PF satisfies the following formula: (SFN+PF_offset) mod T = (T div N) * (index mod N) SFN represents the system frame number, PF_offset represents the offset of the PF itself, T represents the discontinuous reception DRX cycle, N represents the number of PFs in the DRX cycle, index represents the position of the target PF in the DRX cycle, and index<=N.

27. The method according to any one of claims 23 to 26, characterized in that The first message further includes N first parameters, and the N first parameters correspond one-to-one to the N index information; The target PF is determined based on the target index information including: The target PF is determined based on the target index information and the target first parameter, and the target first parameter is determined based on the N first parameters. The target index information is used to indicate the starting position of the target PF, and the target first parameter is used to indicate the number of the target PFs.

28. The method according to claim 27, characterized in that The target PF satisfies the following formula: (SFN+PF_offset) mod T = (T div N) * ((index+offset_1) mod N) Among them, SFN represents the system frame number, PF_offset represents the offset of the PF itself, T represents the DRX cycle, N represents the number of PFs in the DRX cycle, index represents the starting position of the target PF in the DRX cycle, index<=N, offset_1=UE_ID mod DistrLen, DistrLen represents the number of the target PF, and UE_ID represents the identifier of the terminal device.

29. A communication device, characterized in that: Comprising means for performing the method of any one of claims 1-8 or claims 9-16 or claims 17-22 or claims 23-28.

30. A communication device, characterized in that: The communication device includes a processor coupled to a memory; The memory is used to store computer-executable instructions. When the communication device is running, the processor executes the computer-executable instructions to enable the communication device to perform the method according to any one of claims 1 to 8, claims 9 to 16, claims 17 to 22, or claims 23 to 28.

31. A computer-readable storage medium, characterized in that The method comprises instructions which, when executed on a computer, cause the computer to perform the method of any one of claims 1 to 8, claims 9 to 16, claims 17 to 22, or claims 23 to 28.

32. A chip system, characterized in that: The device comprises a processor coupled to a memory, wherein the processor executes computer-executable instructions stored in the memory to implement the method according to any one of claims 1 to 8, claims 9 to 16, claims 17 to 22, or claims 23 to 28.

33. A communication system, characterized in that: Including terminal equipment and network equipment, The terminal device is used to execute the method according to any one of claims 1 to 8 or claims 17 to 22, and the network device is used to execute the method according to any one of claims 9 to 16 or claims 23 to 28.

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