Paging method, device and storage medium

Abstract

The present application provides a paging method, device and storage medium, the method comprising: a first terminal determines a sidelink paging opportunity according to a discontinuous reception DRX mechanism, the sidelink paging opportunity is the opportunity for the first terminal to monitor a paging message on a direct communication interface for communicating with a second terminal, the second terminal is a terminal that provides a relay service to the first terminal, and the paging message is a paging message of a network device to paging the first terminal; according to the sidelink paging mechanism, the paging message is monitored on the direct communication interface. Therefore, the monitoring of the paging message of the network device by the relayed terminal (i.e., the first terminal) in the relay scenario is realized.

Description

Technical Field

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

[0002] In order to expand the network coverage, a UE-to-Network Relay (hereinafter referred to as relay) is introduced. The terminal can establish a connection with the network through the relay, and can also send and receive information with the network device through the relay.

[0003] In a communication scenario without the introduction of relays, the network device can page a terminal that is in an idle or inactive state; accordingly, the terminal uses a discontinuous reception (DRX) method to monitor paging, and after monitoring the paging message of the network device, it restores the communication connection with the network device. However, there is still a lack of relevant solutions for how the relayed terminal monitors paging messages in the relay scenario. Summary of the invention

[0004] The present application provides a paging method, device and storage medium for implementing monitoring of paging messages of network devices by a relayed terminal in a relay scenario.

[0005] In a first aspect, the present application provides a paging method, which is applied to a first terminal. The paging method includes:

[0006] Determine a sidelink paging opportunity according to a discontinuous reception DRX mechanism, where the sidelink paging opportunity is a time when the first terminal monitors a paging message on a direct communication interface for communicating with the second terminal, the second terminal is a terminal that provides a relay service to the first terminal, and the paging message is a paging message for a network device to page the first terminal;

[0007] According to the side chain paging opportunity, the direct communication interface monitors the paging message.

[0008] Optionally, according to the discontinuous reception DRX mechanism, determining the side chain paging opportunity includes:

[0009] Determining a side chain paging opportunity according to the first paging parameter;

[0010] The first paging parameter includes a paging cycle, the number of paging frames in a single paging cycle, a first offset, and an identifier of the first terminal, and the first offset is an offset of a paging frame corresponding to the direct communication interface.

[0011] Optionally, the first paging parameter also includes at least one of the following: a second offset and a wireless frame deviation between interfaces, wherein the second offset is the offset of the paging frame corresponding to the air interface for communication between the network device and the terminal, and the wireless frame deviation between interfaces is the time deviation between the SFN of the air interface and the DFN of the direct communication interface.

[0012] Optionally, determining the side chain paging opportunity according to the first paging parameter includes:

[0013] The DFN of the paging frame in the paging cycle is determined according to the paging cycle, the number of paging frames in a single paging cycle, the first offset and the identifier of the first terminal, and according to at least one of the second offset and the radio frame deviation between interfaces.

[0014] Optionally, if the clock synchronization source of the direct communication interface is a network device, the value of the wireless frame deviation between interfaces is zero;

[0015] Alternatively, if the clock synchronization source of the direct communication interface is a satellite, the value of the wireless frame deviation between interfaces is the actual value of the time deviation between the SFN of the air interface and the DFN of the direct communication interface.

[0016] Optionally, the first paging parameter further includes the number of paging times in a single paging cycle, and the side chain paging occasion includes the occasion of each paging in the paging cycle;

[0017] Determining a side chain paging opportunity according to the first paging parameter includes:

[0018] Determine a DFN of a paging frame in a paging cycle according to the paging cycle, the number of paging frames in a single paging cycle, the first offset, and an identifier of the first terminal;

[0019] Determine, according to the number of paging frames in a single paging cycle, the number of paging times in a single paging cycle, and the identifier of the first terminal, a DFN corresponding to the first paging of the paging message in the paging cycle;

[0020] The timing of each paging in the paging cycle is determined according to the DFN of the paging frame in the paging cycle and the DFN corresponding to the first paging of the paging message in the paging cycle.

[0021] Optionally, according to the side chain paging opportunity, monitoring the paging message on the direct communication interface includes:

[0022] According to the side chain paging occasion, one or more paging sub-channels of the direct communication interface are monitored for paging messages.

[0023] Optionally, the paging method further includes:

[0024] A first message is received from a second terminal, where the first message includes a first paging parameter, and the first message is further used to indicate at least one of the following:

[0025] Indicating that the side chain paging opportunity is related to the second offset, or indicating that the side chain paging opportunity is not related to the second offset;

[0026] Indicating one or more paging subchannels among a plurality of subchannels of the direct communication interface;

[0027] If the first message indicates that the side chain paging opportunity is related to the second offset, the first paging parameter includes the second offset; if the first message indicates that the side chain paging opportunity is not related to the second offset, the first paging parameter does not include the second offset.

[0028] Optionally, the paging method further includes:

[0029] Before monitoring the paging message, determining an air interface paging opportunity according to the second paging parameter;

[0030] Sending a second message to the second terminal, where the second message includes an air interface paging opportunity and / or an identifier of the first terminal;

[0031] Among them, the second paging parameters include the paging cycle, the number of paging frames in a single paging cycle, the number of paging times in a single paging cycle, the second offset, and the identifier of the first terminal. The second offset is the offset of the paging frame corresponding to the air interface for communication between the network device and the terminal, and the air interface paging timing is the timing when the second terminal listens to the paging message on the air interface.

[0032] In a second aspect, the present application provides a paging method, which is applied to a second terminal, and the paging method includes:

[0033] receiving a paging message from a network device to a first terminal, where the second terminal is a terminal providing a relay service to the first terminal;

[0034] Determine, according to the discontinuous transmission DTX mechanism, a side chain paging opportunity of the first terminal, where the side chain paging opportunity is a time when the first terminal monitors a paging message on a direct communication interface for communicating with the second terminal;

[0035] According to the side chain paging occasion, a paging message is sent to the first terminal through the direct communication interface.

[0036] Optionally, determining the sidelink paging opportunity of the first terminal according to a discontinuous transmission DTX mechanism includes:

[0037] Determining a side chain paging opportunity according to the first paging parameter;

[0038] The first paging parameter includes a paging cycle, the number of paging frames in a single paging cycle, a first offset, and an identifier of the first terminal, and the first offset is an offset of a paging frame corresponding to the direct communication interface.

[0039] Optionally, the first paging parameter also includes at least one of the following: a second offset and a wireless frame deviation between interfaces, wherein the second offset is the offset of the paging frame corresponding to the air interface for communication between the network device and the terminal, and the wireless frame deviation between interfaces is the time deviation between the SFN of the air interface and the DFN of the direct communication interface.

[0040] Optionally, determining the side chain paging opportunity according to the first paging parameter includes:

[0041] The DFN of the paging frame in the paging cycle is determined according to the paging cycle, the number of paging frames in a single paging cycle, the first offset, and the identifier of the first terminal, and according to at least one of the second offset and the radio frame deviation between interfaces.

[0042] Optionally, if the clock synchronization source of the direct communication interface is a network device, the value of the wireless frame deviation between interfaces is zero;

[0043] Alternatively, if the clock synchronization source of the direct communication interface is a satellite, the value of the wireless frame deviation between interfaces is the actual value of the time deviation between the SFN of the air interface and the DFN of the direct communication interface.

[0044] Optionally, the first paging parameter further includes the number of paging times in a single paging cycle, and the side chain paging occasion includes the occasion of each paging in the paging cycle;

[0045] Determining a side chain paging opportunity according to the first paging parameter includes:

[0046] Determine a DFN of a paging frame in a paging cycle according to the paging cycle, the number of paging frames in a single paging cycle, the first offset, and an identifier of the first terminal;

[0047] Determine, according to the number of paging frames in a single paging cycle, the number of pagings in a single paging cycle, and the identifier of the first terminal, a DFN corresponding to the first paging of the paging message in the paging cycle;

[0048] The timing of each paging in the paging cycle is determined according to the DFN of the paging frame in the paging cycle and the DFN corresponding to the first paging of the paging message in the paging cycle.

[0049] Optionally, sending a paging message to the first terminal through the direct communication interface according to the side link paging opportunity includes:

[0050] According to the side chain paging occasion, a paging message is sent through one or more paging sub-channels of the direct communication interface.

[0051] Optionally, the paging method further includes:

[0052] Sending a first message to a first terminal, wherein the first message includes a first paging parameter, and the first message is further used to indicate at least one of the following:

[0053] Indicating that the side chain paging opportunity is related to the second offset, or indicating that the side chain paging opportunity is not related to the second offset;

[0054] Indicating one or more paging subchannels among a plurality of subchannels of the direct communication interface;

[0055] If the first message indicates that the side chain paging opportunity is related to the second offset, the first paging parameter includes the second offset; if the first message indicates that the side chain paging opportunity is not related to the second offset, the first paging parameter does not include the second offset.

[0056] Optionally, the paging method further includes:

[0057] Before receiving a paging message from a network device to page the first terminal, receiving a second message sent by the first terminal;

[0058] Determining an air interface paging opportunity according to the second message;

[0059] According to the air interface paging opportunity, monitor the paging message on the air interface;

[0060] The second message includes the air interface paging opportunity and / or the identifier of the first terminal, and the identifier of the first terminal is used to determine the air interface paging opportunity and the side link paging opportunity.

[0061] In a third aspect, the present application provides a paging device, which is applied to an access network device. The paging device includes a memory, a transceiver, and a processor:

[0062] Memory for storing computer programs;

[0063] a transceiver for transmitting and receiving data under the control of the processor;

[0064] A processor that reads a computer program from memory and performs the following operations:

[0065] Determine a sidelink paging opportunity according to the DRX mechanism, where the sidelink paging opportunity is a time when the first terminal monitors a paging message on a direct communication interface for communicating with the second terminal, the second terminal is a terminal that provides a relay service to the first terminal, and the paging message is a paging message for a network device to page the first terminal;

[0066] According to the side chain paging opportunity, the direct communication interface monitors the paging message.

[0067] Optionally, the processor also performs the following operations:

[0068] Determining a side chain paging opportunity according to the first paging parameter;

[0069] The first paging parameter includes a paging cycle, the number of paging frames in a single paging cycle, a first offset, and an identifier of the first terminal, and the first offset is an offset of a paging frame corresponding to the direct communication interface.

[0070] Optionally, the first paging parameter also includes at least one of the following: a second offset and a wireless frame deviation between interfaces, wherein the second offset is the offset of the paging frame corresponding to the air interface for communication between the network device and the terminal, and the wireless frame deviation between interfaces is the time deviation between the SFN of the air interface and the DFN of the direct communication interface.

[0071] Optionally, the processor also performs the following operations:

[0072] The DFN of the paging frame in the paging cycle is determined according to the paging cycle, the number of paging frames in a single paging cycle, the first offset and the identifier of the first terminal, and according to at least one of the second offset and the radio frame deviation between interfaces.

[0073] Optionally, if the clock synchronization source of the direct communication interface is a network device, the value of the wireless frame deviation between interfaces is zero;

[0074] Alternatively, if the clock synchronization source of the direct communication interface is a satellite, the value of the wireless frame deviation between interfaces is the actual value of the time deviation between the SFN of the air interface and the DFN of the direct communication interface.

[0075] Optionally, the first paging parameter further includes the number of paging times in a single paging cycle, and the side chain paging occasion includes the occasion of each paging in the paging cycle;

[0076] The processor also performs the following operations:

[0077] Determine a DFN of a paging frame in a paging cycle according to the paging cycle, the number of paging frames in a single paging cycle, the first offset, and an identifier of the first terminal;

[0078] Determine, according to the number of paging frames in a single paging cycle, the number of pagings in a single paging cycle, and the first terminal identifier, a DFN corresponding to the first paging of the paging message in the paging cycle;

[0079] The timing of each paging in the paging cycle is determined according to the DFN of the paging frame in the paging cycle and the DFN corresponding to the first paging of the paging message in the paging cycle.

[0080] Optionally, the processor also performs the following operations:

[0081] According to the side chain paging occasion, one or more paging sub-channels of the direct communication interface are monitored for paging messages.

[0082] Optionally, the processor also performs the following operations:

[0083] A first message is received from a second terminal, where the first message includes a first paging parameter, and the first message is further used to indicate at least one of the following:

[0084] Indicating that the side chain paging opportunity is related to the second offset, or indicating that the side chain paging opportunity is not related to the second offset;

[0085] Indicating one or more paging subchannels among a plurality of subchannels of the direct communication interface;

[0086] If the first message indicates that the side chain paging opportunity is related to the second offset, the first paging parameter includes the second offset; if the first message indicates that the side chain paging opportunity is not related to the second offset, the first paging parameter does not include the second offset.

[0087] Optionally, the processor is further configured to perform the following operations:

[0088] Before monitoring the paging message, determining an air interface paging opportunity according to the second paging parameter;

[0089] Sending a second message to the second terminal, where the second message includes an air interface paging opportunity and / or an identifier of the first terminal;

[0090] Among them, the second paging parameters include the paging cycle, the number of paging frames in a single paging cycle, the number of paging times in a single paging cycle, the second offset, and the identifier of the first terminal. The second offset is the offset of the paging frame corresponding to the air interface for communication between the network device and the terminal, and the air interface paging timing is the timing when the second terminal listens to the paging message on the air interface.

[0091] In a fourth aspect, the present application provides a paging device, applied to a second terminal, the paging device comprising a memory, a transceiver, and a processor:

[0092] Memory for storing computer programs;

[0093] a transceiver for transmitting and receiving data under the control of the processor;

[0094] A processor is configured to read a computer program stored in a memory and perform the following operations:

[0095] receiving a paging message from a network device to a first terminal, where the second terminal is a terminal providing a relay service to the first terminal;

[0096] Determine, according to the DTX mechanism, a side chain paging opportunity of the first terminal, where the side chain paging opportunity is a time when the first terminal monitors a paging message on a direct communication interface for communicating with the second terminal;

[0097] According to the side chain paging occasion, a paging message is sent to the first terminal through the direct communication interface.

[0098] Optionally, the processor is further configured to perform the following operations:

[0099] Determining a side chain paging opportunity according to the first paging parameter;

[0100] The first paging parameter includes a paging cycle, the number of paging frames in a single paging cycle, a first offset, and an identifier of the first terminal, and the first offset is an offset of a paging frame corresponding to the direct communication interface.

[0101] Optionally, the first paging parameter also includes at least one of the following: a second offset and a wireless frame deviation between interfaces, wherein the second offset is the offset of the paging frame corresponding to the air interface for communication between the network device and the terminal, and the wireless frame deviation between interfaces is the time deviation between the SFN of the air interface and the DFN of the direct communication interface.

[0102] Optionally, the processor also performs the following operations:

[0103] The DFN of the paging frame in the paging cycle is determined according to the paging cycle, the number of paging frames in a single paging cycle, the first offset, and the identifier of the first terminal, and according to at least one of the second offset and the radio frame deviation between interfaces.

[0104] Optionally, if the clock synchronization source of the direct communication interface is a network device, the value of the wireless frame deviation between interfaces is zero;

[0105] Alternatively, if the clock synchronization source of the direct communication interface is a satellite, the value of the wireless frame deviation between interfaces is the actual value of the time deviation between the SFN of the air interface and the DFN of the direct communication interface.

[0106] Optionally, the first paging parameter further includes the number of paging times in a single paging cycle, and the side chain paging occasion includes the occasion of each paging in the paging cycle;

[0107] The processor is also used to perform the following operations:

[0108] Determine a DFN of a paging frame in a paging cycle according to the paging cycle, the number of paging frames in a single paging cycle, the first offset, and an identifier of the first terminal;

[0109] Determine, according to the number of paging frames in a single paging cycle, the number of pagings in a single paging cycle, and the identifier of the first terminal, a DFN corresponding to the first paging of the paging message in the paging cycle;

[0110] The timing of each paging in the paging cycle is determined according to the DFN of the paging frame in the paging cycle and the DFN corresponding to the first paging of the paging message in the paging cycle.

[0111] Optionally, the processor also performs the following operations:

[0112] According to the side chain paging occasion, a paging message is sent through one or more paging sub-channels of the direct communication interface.

[0113] Optionally, the processor also performs the following operations:

[0114] A first message is sent to a first terminal, where the first message includes a first paging parameter, and the first message is further used to indicate at least one of the following:

[0115] Indicating that the side chain paging opportunity is related to the second offset, or indicating that the side chain paging opportunity is not related to the second offset;

[0116] Indicating one or more paging subchannels among a plurality of subchannels of the direct communication interface;

[0117] If the first message indicates that the side chain paging opportunity is related to the second offset, the first paging parameter includes the second offset; if the first message indicates that the side chain paging opportunity is not related to the second offset, the first paging parameter does not include the second offset.

[0118] Optionally, the processor also performs the following operations:

[0119] Before receiving a paging message from a network device to page the first terminal, receiving a second message sent by the first terminal;

[0120] Determining an air interface paging opportunity according to the second message;

[0121] According to the air interface paging opportunity, monitor the paging message on the air interface;

[0122] The second message includes the air interface paging opportunity and / or the identifier of the first terminal, and the identifier of the first terminal is used to determine the air interface paging opportunity and the side link paging opportunity.

[0123] In a fifth aspect, the present application provides a paging device, applied to a first terminal, the paging device comprising:

[0124] a determining unit, configured to determine a sidelink paging opportunity according to a discontinuous reception DRX mechanism, wherein the sidelink paging opportunity is a time when the first terminal monitors a paging message on a direct communication interface for communicating with the second terminal, the second terminal is a terminal providing a relay service to the first terminal, and the paging message is a paging message for a network device to page the first terminal;

[0125] The monitoring unit is used to monitor the paging message on the direct communication interface according to the side chain paging opportunity.

[0126] Optionally, determine the unit, specifically for:

[0127] Determining a side chain paging opportunity according to the first paging parameter;

[0128] The first paging parameter includes a paging cycle, the number of paging frames in a single paging cycle, a first offset, and an identifier of the first terminal, and the first offset is an offset of a paging frame corresponding to the direct communication interface.

[0129] Optionally, the first paging parameter also includes at least one of the following: a second offset and a wireless frame deviation between interfaces, wherein the second offset is the offset of the paging frame corresponding to the air interface for communication between the network device and the terminal, and the wireless frame deviation between interfaces is the time deviation between the SFN of the air interface and the DFN of the direct communication interface.

[0130] Optionally, if the clock synchronization source of the direct communication interface is a network device, the value of the wireless frame deviation between interfaces is zero;

[0131] Alternatively, if the clock synchronization source of the direct communication interface is a satellite, the value of the wireless frame deviation between interfaces is the actual value of the time deviation between the SFN of the air interface and the DFN of the direct communication interface.

[0132] Optionally, determine the unit, specifically for:

[0133] The DFN of the paging frame in the paging cycle is determined according to the paging cycle, the number of paging frames in a single paging cycle, the first offset and the identifier of the first terminal, and according to at least one of the second offset and the radio frame deviation between interfaces.

[0134] Optionally, the first paging parameter further includes the number of paging times in a single paging cycle, and the side chain paging occasion includes the occasion of each paging in the paging cycle;

[0135] Determine the unit, specifically for:

[0136] Determine a DFN of a paging frame in a paging cycle according to the paging cycle, the number of paging frames in a single paging cycle, the first offset, and an identifier of the first terminal;

[0137] Determine, according to the number of paging frames in a single paging cycle, the number of paging times in a single paging cycle, and the identifier of the first terminal, a DFN corresponding to the first paging of the paging message in the paging cycle;

[0138] The timing of each paging in the paging cycle is determined according to the DFN of the paging frame in the paging cycle and the DFN corresponding to the first paging of the paging message in the paging cycle.

[0139] Optional, monitoring unit, specifically used for:

[0140] According to the side chain paging occasion, one or more paging sub-channels of the direct communication interface are monitored for paging messages.

[0141] Optionally, the paging device further includes:

[0142] A receiving unit, configured to receive a first message from a second terminal, where the first message includes a first paging parameter, and the first message is further configured to indicate at least one of the following:

[0143] Indicating that the side chain paging opportunity is related to the second offset, or indicating that the side chain paging opportunity is not related to the second offset;

[0144] Indicating one or more paging subchannels among a plurality of subchannels of the direct communication interface;

[0145] If the first message indicates that the side chain paging opportunity is related to the second offset, the first paging parameter includes the second offset; if the first message indicates that the side chain paging opportunity is not related to the second offset, the first paging parameter does not include the second offset.

[0146] Optionally, the paging device further includes a sending unit, configured to:

[0147] Before monitoring the paging message, determining an air interface paging opportunity according to the second paging parameter;

[0148] Sending a second message to the second terminal, where the second message includes an air interface paging opportunity and / or an identifier of the first terminal;

[0149] Among them, the second paging parameters include the paging cycle, the number of paging frames in a single paging cycle, the number of paging times in a single paging cycle, the second offset, and the identifier of the first terminal. The second offset is the offset of the paging frame corresponding to the air interface for communication between the network device and the terminal, and the air interface paging timing is the timing when the second terminal listens to the paging message on the air interface.

[0150] In a sixth aspect, the present application provides a paging device, applied to a second terminal, the paging device comprising:

[0151] A receiving unit, configured to receive a paging message from a network device to a first terminal, wherein the second terminal is a terminal providing a relay service to the first terminal;

[0152] A determining unit, configured to determine a side chain paging opportunity of the first terminal according to a discontinuous transmission DTX mechanism, where the side chain paging opportunity is a time when the first terminal monitors a paging message on a direct communication interface for communicating with the second terminal;

[0153] The sending unit is used to send a paging message to the first terminal through the direct communication interface according to the side chain paging opportunity.

[0154] Optionally, determine the unit, specifically for:

[0155] Determining a side chain paging opportunity according to the first paging parameter;

[0156] The first paging parameter includes a paging cycle, the number of paging frames in a single paging cycle, a first offset, and an identifier of the first terminal, and the first offset is an offset of a paging frame corresponding to the direct communication interface.

[0157] Optionally, the first paging parameter also includes at least one of the following: a second offset and a wireless frame deviation between interfaces, wherein the second offset is the offset of the paging frame corresponding to the air interface for communication between the network device and the terminal, and the wireless frame deviation between interfaces is the time deviation between the SFN of the air interface and the DFN of the direct communication interface.

[0158] Optionally, determine the unit, specifically for:

[0159] The DFN of the paging frame in the paging cycle is determined according to the paging cycle, the number of paging frames in a single paging cycle, the first offset, and the identifier of the first terminal, and according to at least one of the second offset and the radio frame deviation between interfaces.

[0160] Optionally, if the clock synchronization source of the direct communication interface is a network device, the value of the wireless frame deviation between interfaces is zero;

[0161] Alternatively, if the clock synchronization source of the direct communication interface is a satellite, the value of the wireless frame deviation between interfaces is the actual value of the time deviation between the SFN of the air interface and the DFN of the direct communication interface.

[0162] Optionally, the first paging parameter further includes the number of paging times in a single paging cycle, and the side chain paging occasion includes the occasion of each paging in the paging cycle;

[0163] Determine the unit, specifically for:

[0164] Determine a DFN of a paging frame in a paging cycle according to the paging cycle, the number of paging frames in a single paging cycle, the first offset, and an identifier of the first terminal;

[0165] Determine, according to the number of paging frames in a single paging cycle, the number of pagings in a single paging cycle, and the identifier of the first terminal, a DFN corresponding to the first paging of the paging message in the paging cycle;

[0166] The timing of each paging in the paging cycle is determined according to the DFN of the paging frame in the paging cycle and the DFN corresponding to the first paging of the paging message in the paging cycle.

[0167] Optionally, the sending unit is specifically used for:

[0168] According to the side chain paging occasion, a paging message is sent through one or more paging sub-channels of the direct communication interface.

[0169] Optionally, the sending unit is further configured to:

[0170] A first message is sent to a first terminal, where the first message includes a first paging parameter, and the first message is further used to indicate at least one of the following:

[0171] Indicating that the side chain paging opportunity is related to the second offset, or indicating that the side chain paging opportunity is not related to the second offset;

[0172] Indicating one or more paging subchannels among a plurality of subchannels of the direct communication interface;

[0173] If the first message indicates that the side chain paging opportunity is related to the second offset, the first paging parameter includes the second offset; if the first message indicates that the side chain paging opportunity is not related to the second offset, the first paging parameter does not include the second offset.

[0174] Optionally, the receiving unit is further configured to:

[0175] Before receiving a paging message from a network device to page the first terminal, receiving a second message sent by the first terminal;

[0176] Determining an air interface paging opportunity according to the second message;

[0177] According to the air interface paging opportunity, monitor the paging message on the air interface;

[0178] The second message includes the air interface paging opportunity and / or the identifier of the first terminal, and the identifier of the first terminal is used to determine the air interface paging opportunity and the side link paging opportunity.

[0179] In a seventh aspect, the present application provides a processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, and the computer program is used to enable a processor to execute the paging method described in the first aspect or the second aspect.

[0180] In an eighth aspect, the present application provides a computer program product comprising instructions, which, when executed on a computer, enables the computer to execute the paging method as described in the first or second aspect above.

[0181] In a ninth aspect, the present application provides a communication system, comprising a first terminal as described above, a second terminal as described above, and a network device.

[0182] The present application provides a paging method, device and storage medium, in which the second terminal provides a relay service for the first terminal, and the first terminal determines the side link paging timing according to the DRX mechanism, and monitors the paging message on the direct communication interface for communicating with the second terminal according to the side link paging timing, thereby realizing the first terminal monitoring the paging message of the network device in the relay scenario and saving the power consumption of the first terminal.

[0183] It should be understood that the contents described in the above summary of the invention are not intended to limit the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0184] In order to more clearly illustrate the technical solutions in the present application or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0185] Figure 1 Schematic diagram of the communication scenario provided in the embodiment of the present application Figure 1 ;

[0186] Figure 2 Schematic diagram of the communication scenario provided in the embodiment of the present application Figure 2 ;

[0187] Figure 3 Schematic diagram of the communication scenario provided in the embodiment of the present application Figure 3 ;

[0188] Figure 4 A schematic diagram of a paging method provided in accordance with an embodiment of the present application;

[0189] Figure 5 A schematic diagram of a paging method provided in accordance with another embodiment of the present application;

[0190] Figure 6 A schematic diagram of a paging method provided in accordance with another embodiment of the present application;

[0191] Figure 7 A schematic diagram of the structure of a paging device provided in one embodiment of the present application;

[0192] Figure 8 A schematic diagram of the structure of a paging device provided in another embodiment of the present application;

[0193] Fig. 9 A schematic diagram of the structure of a paging device provided in another embodiment of the present application;

[0194] Fig.10 A schematic diagram of the structure of a paging device provided in another embodiment of the present application. DETAILED DESCRIPTION

[0195] The term "and / or" in this application describes the association relationship of associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0196] In the embodiments of the present application, the term "plurality" refers to two or more than two, and other quantifiers are similar.

[0197] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0198] The technical solution provided in the embodiment of the present application can be applicable to a variety of systems, especially 5G systems. For example, the applicable system can be a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (WCDMA) general packet radio service (GPRS) system, a long term evolution (LTE) system, a LTE frequency division duplex (FDD) system, a LTE time division duplex (TDD) system, an advanced long term evolution (LTE-A) system, a universal mobile telecommunication system (UMTS), a world-wide interoperability for microwave access (WiMAX) system, a 5G new radio (NR) system, etc. These various systems include terminals and network equipment. The system may also include a core network part, such as an evolved packet system (EPS), a 5G system (5GS), etc.

[0199] The terminal involved in the embodiment of the present application may be a device that provides voice and / or data connectivity to a user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem. In different systems, the name of the terminal may also be different. For example, in a 5G system, the terminal may be called a user equipment (UE). The terminal can communicate with one or more core networks (CN) via a radio access network (RAN). The terminal can be a mobile terminal, such as a mobile phone (or a "cellular" phone) and a computer with a mobile terminal. For example, it can be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device that exchanges language and / or data with a radio access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs) and other devices. A wireless terminal may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, a remote terminal, an access terminal, a user terminal, a user agent, and a user device, but is not limited thereto in the embodiments of the present application.

[0200] The network device involved in the embodiments of the present application may be a base station, which may include multiple cells providing services for the terminal. Depending on the specific application scenario, the base station may also be called an access point, or may be a device in the access network that communicates with the wireless terminal through one or more sectors on the air interface, or other names. The network device may be used to interchange received air frames with Internet Protocol (IP) packets, and serve as a router between the wireless terminal and the rest of the access network, wherein the rest of the access network may include an Internet Protocol (IP) communication network. The network device may also coordinate the attribute management of the air interface. For example, the network device involved in the embodiments of the present application may be a network device (Base Transceiver Station, BTS) in the Global System for Mobile communications (Global System for Mobile communications, GSM) or Code Division Multiple Access (Code Division Multiple Access, CDMA), or a network device (NodeB) in Wide-band Code Division Multiple Access (WCDMA), or an evolutionary network device (evolutional Node B, eNB or e-NodeB) in the long term evolution (long term evolution, LTE) system, a 5G base station (gNB) in the 5G network architecture (next generation system), or a home evolved Node B (Home evolved Node B, HeNB), a relay node, a home base station (femto), a pico base station (pico), etc., which is not limited in the embodiments of the present application. In some network structures, the network device may include a centralized unit (CU) node and a distributed unit (DU) node, and the centralized unit and the distributed unit may also be arranged geographically separately.

[0201] Network devices and terminals can each use one or more antennas for multiple-input multiple-output (MIMO) transmission. MIMO transmission can be single-user MIMO (SU-MIMO) or multi-user MIMO (MU-MIMO). Depending on the form and number of antenna combinations, MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO or massive-MIMO, or it can be diversity transmission, precoded transmission or beamforming transmission, etc.

[0202] First, some communication methods and terms involved in this application are explained to facilitate understanding by those skilled in the art:

[0203] (I) Communication method

[0204] (1) Cellular network communication

[0205] Traditional wireless communication uses a cellular network communication mode, in which a terminal and a network device transmit uplink and downlink data / control information via an air interface (eg, a Uu interface).

[0206] Figure 1 For communication scenario examples Figure 1 , which is usually a cellular network communication scenario. Figure 1 As shown, taking the example that the network equipment includes a base station and a core network, and the terminals include terminal 1 and terminal 2, terminal 1 and terminal 2 are respectively communicated with the base station through a Uu interface.

[0207] (2)Direct communication

[0208] Direct communication refers to a method in which adjacent terminals can transmit data over a short distance through a direct communication link (also called a sidelink, also called a Sidelink or PC5). The wireless interface corresponding to the direct communication link is called a direct communication interface (also called a Sidelink interface or a PC5 interface).

[0209] Figure 2 For communication scenario examples Figure 2 , this communication scenario is a direct communication scenario between terminals. Figure 2 As shown, taking the network equipment including a base station and a core network, and the terminals including terminal 1 and terminal 2 as an example, terminal 1 and terminal 2 are respectively communicated with the base station through a Uu interface, and terminal 1 and terminal 2 communicate with each other through a direct communication interface.

[0210] (3) Relay

[0211] In order to expand network coverage, a relay from the terminal to the network device is introduced, and the terminal and the network device communicate through the relay. In the relay scenario, the relay terminal (a terminal with relay function) communicates with the network device through the air interface, and the relay terminal and the relayed terminal (also called the remote terminal) communicate through the direct communication interface. Among them, the link between the relay terminal and the network device can be called a backhaul link for the relayed terminal, and the link between the relay terminal and the relayed terminal is a direct communication link.

[0212] Figure 3 For communication scenario examples Figure 3 , the communication scenario is a relay scenario. Figure 3 As shown, the relay scenario includes network equipment, relay terminals, and relayed terminals. Taking the network equipment including base stations and core networks as an example, the relay terminal communicates with the network equipment through the Uu interface, and the relayed terminal communicates with the relay terminal through a direct communication interface.

[0213] (II) Terminology

[0214] (1) Paging

[0215] When the Radio Resource Control (RRC) of the terminal is in an idle (IDLE) state or an inactive (INACTIVE) state, that is, when the terminal is in the RRC_IDLE state or the RCC_INACTIVE state, the network device can page the terminal. After the terminal monitors the paging message of the network device, it can be converted from the RRC_IDLE state or the RCC_INACTIVE state to the active (RRC_ACTIVE) state of the RRC link.

[0216] (2) Discontinuous Reception (DRX) mechanism: In the DRX mechanism, the terminal can monitor the paging message at the air interface at the paging occasion (PO) of each paging cycle.

[0217] (3) Paging cycle: In the DRX mechanism, for the receiving end (such as a terminal), the paging cycle is also called a discontinuous reception cycle, or DRX cycle for short, which is used to instruct the receiving end to monitor paging messages every other paging cycle; for the sending end (such as a network device), the DRX mechanism corresponds to the discontinuous transmission (DTX) mechanism, and the paging cycle is called a discontinuous transmission cycle, or DTX cycle for short, which is used to instruct the sending end to send paging messages according to the paging cycle.

[0218] (4) Paging Frame (PF): A paging cycle includes one or more paging frames. A paging frame is a radio frame including multiple subframes. A paging frame may include one or more paging occasions or may include the starting point of a paging occasion.

[0219] (5) Paging occasion (PO): A set of monitoring occasions of the physical downlink control channel (PDCCH), which can have multiple time slots. During the paging occasion, the terminal monitors the paging message during the paging occasion of each paging cycle. If there are multiple paging occasions in one paging cycle, the terminal can be repeatedly paged multiple times in one paging cycle to improve the success rate of paging.

[0220] (6) System Frame Number (SFN): The radio frame number at the air interface, for example, the radio frame number at the Uu interface.

[0221] (7) Direct Frame Number (DFN): The wireless frame number at the direct communication interface.

[0222] (8) First terminal: The relayed terminal in the relay scenario, also known as the remote terminal.

[0223] (9) Second terminal: a terminal that provides relay services to the first terminal in a relay scenario.

[0224] The second terminal communicates with the first terminal via a direct communication interface, and the second terminal communicates with the network device via an air interface.

[0225] (10) Sidelink paging occasion (SLPO): The time when the first terminal monitors the paging message on the direct communication interface for communicating with the second terminal. It is also the time when the second terminal sends the paging message on the direct communication interface. The paging message refers to the paging message sent by the network device to the first terminal.

[0226] (11) Air paging timing: The timing when the second terminal monitors the paging message of the network device to the first terminal through the air interface. It is also the timing that the network device should follow to page the first terminal through the air interface.

[0227] (12) First offset value: the offset of the paging frame corresponding to the direct communication interface between the first terminal and the second terminal. In other words, the first offset value refers to the offset used for paging frame measurement when the direct communication interface monitors or sends a paging message.

[0228] (13) Second offset value: the offset of the paging frame corresponding to the air interface between the network device and the terminal. In other words, the second offset value refers to the offset used for paging frame measurement when monitoring or sending paging messages on the air interface.

[0229] (14) Inter-interface radio frame deviation: The time deviation between the SFN of the air interface and the DFN of the direct communication interface. Its value is related to the clock synchronization source of the direct communication interface.

[0230] (15) Terminal identification: used to distinguish different terminals.

[0231] Optionally, the terminal identifier is determined according to a temporary mobile subscriber identity (TMSI) of the terminal. For example, the terminal identifier is a result of a modulo operation (also called a mod operation) between the TMSI and 1024.

[0232] Optionally, if the first terminal is not registered on the network, the identifier of the first terminal is a default identifier, such as zero.

[0233] In a communication scenario where a relay is not introduced, a terminal in RRC_IDLE or RRC_INACTIVE can use a discontinuous reception (DRX) mechanism to monitor a paging message from a network device at an air interface.

[0234] In a communication scenario with the introduction of relay, the relay terminal monitors the paging messages of the network device paging the relay terminal and the paging messages of the network device paging the relayed terminal at the air interface at the same time. If the paging message of the network device paging the relayed terminal is monitored, the paging message needs to be forwarded to the relayed terminal. At present, most of the paging monitoring solutions are aimed at the air interface, and there is no relevant solution to solve the problem of how the relayed terminal monitors the paging message.

[0235] To solve the above problems, the embodiments of the present application provide a paging method, device and storage medium. In the present application, the first terminal determines the timing of monitoring the paging message on the direct communication interface communicating with the second terminal according to the DRX mechanism, and monitors the paging message from the network device on the direct communication interface according to the determined timing, thereby realizing the monitoring of the paging message by the relayed terminal (i.e., the first terminal) in the relay scenario, and reducing the power consumption of the relayed terminal for monitoring the paging message.

[0236] Among them, the method and device provided in the embodiments of the present application are based on the same application concept. Since the principles of solving problems by the method and device are similar, the implementation of the device and method can refer to each other, and the repeated parts will not be repeated.

[0237] Figure 4 FIG. 1 is a flow chart of a paging method provided by an embodiment of the present application. Figure 4 As shown, the method includes:

[0238] S401. The first terminal determines a sidelink paging opportunity according to a DRX mechanism.

[0239] In this step, when the DRX mechanism is applied to the determination of the paging occasion, one or more paging occasions of the terminal in each paging cycle can be determined. Therefore, when the sidelink paging occasion of the first terminal is determined based on the DRX mechanism, one or more sidelink paging occasions of the first terminal in each paging cycle can be determined.

[0240] S402: The first terminal monitors a paging message on the direct communication interface according to the side link paging opportunity.

[0241] In this step, after determining one or more side chain paging opportunities in each paging cycle, at each side chain paging opportunity, the first terminal monitors the paging message forwarded by the second terminal from the network device at the direct communication interface. If the second terminal receives a paging message from the network device to the first terminal, the second terminal sends the paging message to the first terminal through the direct communication interface at the side chain paging opportunity.

[0242] In the embodiment of the present application, in the relay scenario, the first terminal as the relayed device determines one or more side chain paging opportunities in each paging cycle according to the DRX mechanism, and monitors the paging message forwarded by the second terminal from the network device on the direct communication interface at each side chain paging opportunity. Therefore, the monitoring of the paging message by the relayed terminal in the relay scenario is realized, and the relayed device does not need to monitor the paging message in real time, which effectively reduces the power consumption of the paging message monitoring in the relay scenario.

[0243] Figure 5 FIG. 1 is a flow chart of a paging method provided by another embodiment of the present application. Figure 5 As shown, the method includes:

[0244] S501. The first terminal determines a sidelink paging opportunity according to a DRX mechanism.

[0245] S502: The first terminal monitors a paging message on the direct communication interface according to the side link paging opportunity.

[0246] The implementation principles and technical effects of S501 and S502 may refer to the description of the aforementioned embodiments.

[0247] S503: The second terminal receives a paging message from the network device to the first terminal.

[0248] In this step, the second terminal monitors the paging message of the network device to the first terminal at the air interface, and when the network device sends the paging message through the air interface, the second terminal receives the paging message.

[0249] Among them, when the second terminal monitors the paging message of the network device paging the first message at the air interface, for example, real-time monitoring or monitoring at a fixed time can be adopted, or, optionally, the second terminal determines the air paging timing according to the DRX mechanism, and monitors the paging message at the air interface according to the air paging timing to save the power consumption of the second terminal.

[0250] S504: The second terminal determines a sidelink paging opportunity of the first terminal according to the DTX mechanism.

[0251] In this step, after receiving the paging message from the network device to the first terminal, the second terminal determines the paging cycle for the first terminal closest to the current time according to the DTX mechanism, and determines the sidelink paging opportunity in the paging cycle.

[0252] S505: The second terminal sends a paging message to the first terminal through the direct communication interface according to the side link paging opportunity.

[0253] In this step, after determining the side chain paging opportunity, the second terminal forwards the paging message of the network device to the first terminal through the direct communication interface at the side chain paging opportunity. After receiving the paging message, the first terminal can be converted from the RCC_IDLE state or the RCC_INACTIVE state to the RCC_ACTIVE state, and then communicate with the network device uplink and downlink.

[0254] In the embodiment of the present application, in the relay scenario, the first terminal monitors the paging message on the direct communication interface according to the side chain paging opportunity, and after the second terminal receives the paging message of the network device paging the first terminal, it determines the side chain paging opportunity and forwards the paging message to the first terminal according to the side chain paging opportunity. The monitoring and sending of the paging message of the relayed terminal in the relay scenario is realized, and the relayed device does not need to monitor the paging message in real time, which effectively reduces the power consumption of the paging message monitoring in the relay scenario.

[0255] When the DRX mechanism is applied to determine the paging occasion, it needs to be based on multiple configured paging parameters.

[0256] Therefore, in some embodiments, when determining the sidelink paging opportunity based on the DRX mechanism, the sidelink paging opportunity can be determined according to multiple configured paging parameters (for ease of distinction, the paging parameter used to determine the sidelink paging opportunity is called the first paging parameter).

[0257] Similarly, in some embodiments, when the second terminal determines the air paging opportunity based on the DRX mechanism, it can also determine the air paging opportunity according to multiple configured paging parameters (for ease of distinction, the paging parameters used to determine the air paging opportunity are called second paging parameters).

[0258] In one example, the first paging parameter includes a paging cycle, the number of paging frames in a single paging cycle, a first offset, and an identifier of the first terminal. Different first terminals have the same paging cycle, the same number of paging frames in a single paging cycle, and the same first offset, but different identifiers of the first terminals. Therefore, the sidelink paging opportunities of different first terminals can be distinguished by relying on the identifiers of different first terminals.

[0259] Optionally, when the first paging parameter includes a paging cycle, the number of paging frames in a single paging cycle, a first offset, and an identifier of the first terminal, the sidelink paging opportunity includes the DFN of the paging frame in the paging cycle. At this time, the process of determining the sidelink paging opportunity according to the first paging parameter includes: determining the DFN of the paging frame in the paging cycle according to the paging cycle, the number of paging frames in a single paging cycle, the first offset, and the identifier of the first terminal. Therefore, the first terminal can monitor the paging message on the direct communication interface according to the DFN of the paging frame in the paging cycle, and after receiving the paging message of the network device paging the first terminal, the second terminal can forward the paging message to the first terminal on the direct communication interface according to the DFN of the paging frame in the paging cycle.

[0260] Optionally, for monitoring or sending of paging messages at the direct communication interface, a formula for determining the DFN of a paging frame in a paging cycle may be expressed as: (DFN+SLPF_offset) mod T=(T div N)*(UE_ID mod N).

[0261] Among them, SLPF_offset represents the first offset, T represents the paging cycle, N represents the number of paging frames in a single paging cycle, UE_ID represents the identifier of the first terminal, div operation represents integer division operation, and mod operation represents remainder operation.

[0262] In another example, the first paging parameter may include the number of paging times in a single paging cycle in addition to the paging cycle, the number of paging frames in a single paging cycle, the first offset, and the identifier of the first terminal. The number of paging times in a single paging cycle is the number of repeated transmissions of the paging message in a single paging cycle. Assuming that the number of paging times in a single paging cycle is Ns, the first terminal may be paged Ns times in a single paging cycle, that is, the second terminal may transmit Ns paging messages to the first terminal to improve the paging success rate.

[0263] Optionally, the side chain paging occasion includes each paging occasion in the paging cycle. At this time, the process of determining the side chain paging occasion according to the first paging parameter includes:

[0264] Determine the DFN of the paging frame in the paging cycle according to the paging cycle, the number of paging frames in a single paging cycle, the first offset, and the identifier of the first terminal; determine the DFN corresponding to the first paging in the paging cycle according to the number of paging frames in a single paging cycle, the number of pagings in a single paging cycle, and the identifier of the first terminal; determine the timing of each paging in the paging cycle according to the DFN of the paging in the paging cycle and the DFN corresponding to the first paging in the paging cycle.

[0265] Therefore, the first terminal listens to the paging message on the direct communication interface according to the timing of each paging in the paging cycle. After receiving the paging message from the network device paging the first terminal, the second terminal can forward the paging message to the first terminal on the direct communication interface according to the timing of each paging in the paging cycle.

[0266] Among them, for monitoring or sending paging messages at the direct communication interface, the formula for determining the DFN of the paging frame in the paging cycle is determined based on the paging cycle, the number of paging frames in a single paging cycle, the first offset, and the identifier of the first terminal. The aforementioned corresponding formula can be used and will not be repeated here.

[0267] Optionally, for monitoring or sending a paging message at the direct communication interface, according to the number of paging frames in a single paging cycle, the number of paging times in a single paging cycle, and the identifier of the first terminal, a formula for determining the DFN corresponding to the first paging in the paging cycle can be expressed as:

[0268] i_s=floor(UE_ID / N)mod Ns, where floor function represents rounding down, Ns is the number of paging times in a single paging cycle, and i_s represents the position of the subframe corresponding to the first paging in the paging frame, thereby determining the DFN corresponding to the first paging, that is, determining the timing of the first paging.

[0269] The remaining paging times are determined according to the DFN of the paging frame in the paging cycle and the DFN corresponding to the first paging in the paging cycle, for example, the remaining paging times are determined according to a fixed time interval. Thus, the timing of each paging is obtained.

[0270] As an example, after sending a paging message to the first terminal for the first time, the second terminal may indicate the time domain information of the repeated paging message to the first terminal through time resource assignment in a serial communication interface (Serial Communication Interface, SCI).

[0271] In one example, the second paging parameter includes a paging cycle, a number of paging frames in a single paging cycle, a second offset, an identifier of the first terminal, and a number of paging times in a single paging cycle. The first paging parameter is compared with the second paging parameter, wherein the paging cycle is the same, the number of paging frames in a single paging cycle is the same, the identifier of the first terminal is the same, and the number of paging times in a single paging cycle is the same. The process of determining an air interface paging opportunity according to the second paging parameter includes:

[0272] For monitoring or sending of paging messages at the air interface, the SFN of the paging frame in the paging cycle is determined according to the paging cycle, the number of paging frames in a single paging cycle, the second offset, and the identifier of the first terminal; the SFN corresponding to the first paging in the paging cycle is determined according to the number of paging frames in a single paging cycle, the number of paging times in a single paging cycle, and the identifier of the first terminal; the timing of each paging in the paging cycle is determined according to the SFN of the paging in the paging cycle and the SFN corresponding to the first paging in the paging cycle.

[0273] Optionally, for monitoring or sending of paging messages at the air interface, a formula for determining the SFN of a paging frame in a paging cycle may be expressed as: (SFN+PF_offset) mod T=(T div N)*(UE_ID mod N).

[0274] PF_offset represents the first offset, T represents the paging cycle, N represents the number of paging frames in a single paging cycle, and UE_ID represents the identifier of the first terminal.

[0275] Optionally, for monitoring or sending paging messages at the air interface, the formula for determining the SFN corresponding to the first paging in the paging cycle can refer to the formula for determining the DFN corresponding to the first paging in the paging cycle when monitoring or sending paging messages at the direct communication interface, and no further details are given.

[0276] In one example, based on the first paging parameter including the paging cycle, the number of paging frames in a single paging cycle, the first offset, and the identifier of the first terminal, or based on the first paging parameter including the paging cycle, the number of paging frames in a single paging cycle, the number of paging times in a single paging cycle, the first offset, and the identifier of the first terminal, the first paging parameter also includes at least one of the following: a second offset, an inter-interface wireless frame deviation, so as to further improve the rationality of the side chain paging timing determined based on the first paging parameter, and improve the paging efficiency and paging effect.

[0277] Specifically, when determining the side chain paging timing according to the first paging parameter, the SFN of the paging frame in the paging cycle can be determined according to the paging cycle in the first paging parameter, the number of paging frames in a single paging cycle, the first offset, the identifier of the first terminal, and at least one of the second offset and the wireless frame deviation between interfaces. When the first paging parameter also includes the number of paging frames in a single paging cycle, the timing of each paging in the paging cycle can be further determined. The following describes the introduction of the second offset and the wireless frame deviation between interfaces in the first paging parameter:

[0278] (I) Introducing the second offset into the first paging parameter

[0279] If the air interface paging timing determined based on DRX is consistent with the side link paging timing determined based on DRX, then after the second terminal device receives the paging message from the network device to the first terminal in a paging cycle, due to the time delay, it is likely that it will not be able to immediately send the paging message to the first terminal through the direct communication interface in the paging cycle, but will have to wait for the next paging cycle, further increasing the time between the second terminal receiving the paging message and the second terminal sending the paging message to the first terminal, affecting the paging efficiency and paging effect. To avoid the above phenomenon, the following methods can be used:

[0280] A possible implementation method: the side chain paging timing is related to the second offset. In other words, the side chain paging timing is determined by adding the first offset to the second offset. At this time, the air paging timing uses the second offset, and the side chain paging timing uses the first offset and the second offset, so that the air paging timing is staggered with the side chain paging timing. After the second terminal device receives the paging message of the network device to the first terminal in a paging cycle of the air interface, it can send the paging message to the first terminal in the paging cycle of the direct communication interface that is close in time, without waiting for a full cycle, thereby improving the paging efficiency and paging effect.

[0281] When the sidelink paging opportunity is related to the second offset, based on the first paging parameter including the paging cycle, the number of paging frames in a single paging cycle, the first offset, the second offset, and the identifier of the first terminal. At this time, the sidelink paging opportunity includes the SFN of the paging frame in the paging cycle, and the SFN of the paging frame in the paging cycle can be determined according to the paging cycle, the number of paging frames in a single paging cycle, the first offset, the second offset, and the identifier of the first terminal.

[0282] Optionally, for monitoring or sending paging messages at the direct communication interface, a formula for determining the SFN of the paging frame in the paging cycle is determined based on the paging cycle, the number of paging frames in a single paging cycle, the first offset, the identifier of the first terminal, and the second offset, which can be expressed as: (SFN+SLPF_offset+PF_offset)mod T=(T div N)(UE_ID modN).

[0283] Optionally, when the first paging parameter includes a paging cycle, the number of paging frames in a single paging cycle, the number of paging times in a single paging cycle, a first offset, a second offset, and an identifier of the first terminal, the side chain paging opportunity includes the timing of each paging in the paging cycle. At this time, the timing of each paging in the paging cycle can be determined based on the first paging parameter.

[0284] Specifically, after determining the SFN of the paging frame in the paging cycle according to the paging cycle, the number of paging frames in a single paging cycle, the first offset, the identifier of the first terminal, and the second offset, the SFN corresponding to the first paging in the paging cycle is determined according to the number of paging frames in the single paging cycle, the number of pagings in the single paging cycle, and the identifier of the first terminal, and then the timing of each paging in the paging cycle is determined. Among them, for monitoring or sending paging messages at the direct communication interface, the SFN corresponding to the first paging in the paging cycle can be determined by referring to the aforementioned related formulas, which will not be repeated here.

[0285] Another possible implementation method: the side chain paging timing is independent of the second offset, and the first offset is not equal to the second offset, so that the air paging timing and the side chain paging timing are staggered by the unequal first offset and second offset. After the second terminal device receives the paging message of the network device paging the first terminal in a paging cycle of the air interface, it can send the paging message to the first terminal in a paging cycle close in time to the direct communication interface without waiting for a full cycle, thereby improving the paging efficiency and paging effect. At this time, the first paging parameter does not include the second offset, or in other words, the value of the second offset in the first paging parameter is zero.

[0286] (II) Introducing Inter-Interface Radio Frame Deviation in the First Paging Parameter

[0287] Considering that there may be a deviation between the SFN of the air interface and the DFN of the direct communication interface, after the second terminal receives the paging message of the network device paging the first terminal at the air interface, it is also necessary to determine the side chain paging opportunity according to the DFN of the direct communication interface. In order to reduce the time error caused by the time deviation between the SFN of the air interface and the DFN of the direct communication interface in this process, the inter-interface radio frame deviation can be introduced into the first paging parameter. Among them, the inter-interface radio frame deviation is used to represent the time deviation between the SFN of the air interface and the DFN of the direct communication interface.

[0288] Optionally, the existence of the time deviation between the SFN of the air interface and the DFN of the direct communication interface is mainly due to the difference between the clock synchronization source of the air interface and the clock synchronization source of the direct communication interface. The clock synchronization source of the air interface is usually a network device. Therefore, if the clock synchronization source of the direct communication interface is a network device, the first paging parameter does not include the wireless frame deviation between interfaces, or the value of the wireless frame deviation between interfaces in the first paging parameter is zero. If the clock synchronization source of the direct communication interface is a satellite, the first paging parameter includes the wireless frame deviation between interfaces, and the value of the wireless frame deviation between interfaces is the actual value of the time deviation between the SFN of the air interface and the DFN of the direct communication interface.

[0289] Specifically, the first paging parameter includes a paging cycle, the number of paging frames in a single paging cycle, a first offset, a wireless frame deviation between interfaces, and an identifier of the first terminal; or, the first paging parameter includes a paging cycle, the number of paging frames in a single paging cycle, a first offset, a second offset, a wireless frame deviation between interfaces, and an identifier of the first terminal; or, the first paging parameter includes a paging cycle, the number of paging frames in a single paging cycle, the number of paging times in a single paging cycle, a first offset, a wireless frame deviation between interfaces, and an identifier of the first terminal; or, the first paging parameter includes a paging cycle, the number of paging frames in a single paging cycle, the number of paging times in a single paging cycle, a first offset, a second offset, a wireless frame deviation, and an identifier of the first terminal.

[0290] Taking the first paging parameter including the paging cycle, the number of paging frames in a single paging cycle, the number of paging times in a single paging cycle, the first offset, the second offset, the wireless frame deviation between interfaces, and the identifier of the first terminal as an example: when determining the side chain paging timing according to the first paging parameter, the SFN of the paging frame in the paging cycle can be determined according to the paging cycle, the number of paging frames in a single paging cycle, the first offset, the second offset, the wireless frame deviation between interfaces, and the identifier of the first terminal; then, according to the number of paging frames in a single paging cycle, the number of paging times in a single paging cycle, and the identifier of the first terminal, the SFN corresponding to the first paging in the paging cycle is determined, and then the timing of each paging in the paging cycle is determined. Among them, optionally, a formula for determining the SFN of the paging frame in the paging cycle is determined based on the paging cycle, the number of paging frames in a single paging cycle, the first offset, the second offset, the wireless frame deviation between interfaces, and the identifier of the first terminal, which is expressed as: (SFN+DFN_SFN_offset+SLPF_offset+PF_offset)mod T=(T div N)*(UE_ID mod N).

[0291] Among them, DFN_SFN_offset represents the wireless frame deviation between interfaces.

[0292] In some embodiments, the configuration method of whether the first offset, the radio frame deviation between interfaces, and / or the sidelink paging opportunity in the first paging parameter are related to the second offset includes at least one of the following methods:

[0293] Mode 1: When or after the first terminal establishes a sidelink connection with the second terminal, the second terminal sends a configuration message to the first terminal through the direct communication interface to instruct the first terminal to perform configuration;

[0294] Method 2: configuring the value of the first offset, the value of the radio frame deviation between interfaces, and / or whether the sidelink paging opportunity is related to the second offset in the pre-configuration information of the first terminal;

[0295] Method 3: configuring the value of the first offset, the value of the radio frame deviation between interfaces, and / or whether the side chain paging opportunity is related to the second offset in the default parameters of the communication protocol;

[0296] Method 4: specifying in the communication protocol the value of the first offset, the value of the radio frame deviation between interfaces, and / or whether the sidelink paging opportunity is related to the second offset.

[0297] Based on this method, Figure 6 FIG. 1 is a flow chart of a paging method provided by another embodiment of the present application. Figure 6 As shown, the method includes:

[0298] S601. A first terminal establishes a sidelink connection with a second terminal.

[0299] S602: The second terminal sends a first message to the first terminal, where the first message includes a first paging parameter.

[0300] In this step, when or after the first terminal establishes a sidelink connection with the second terminal, the second terminal sends a first message to the first terminal, and the first message includes a first paging parameter. Since the first terminal knows its own identity, the first paging parameter in the first message does not include the identity of the first terminal, and the remaining content in the first paging parameter can refer to the relevant content of the above embodiment.

[0301] Among them, the message form of the first message is, for example, a signaling message of a direct communication interface-direct communication link layer (PC5-S for short), a signaling message of a direct communication interface-radio resource control layer (PC5-RRC for short), a signaling message of a control unit (Control Element, CE) in a media access control layer (Media Access Control, MAC), or a signaling message of a downlink control link (Downlink Control Information, DCI).

[0302] In one example, the first message may also be used to indicate whether the sidelink paging opportunity is related to the second offset. At this time, the second terminal may add the first offset and an indication of whether the sidelink paging opportunity is related to the second offset based on the second paging parameter configured by the network device for the air interface. Optionally, an inter-interface radio frame offset may also be added.

[0303] Specifically, if the first message indicates that the side link paging opportunity is related to the second offset, the first paging parameter configured by the second terminal includes the second offset; if the first message indicates that the side link paging opportunity is not related to the second offset, the first paging parameter configured by the second terminal does not include the second offset, or the first paging parameter configured by the second terminal includes the second offset, but the value of the second offset in the first paging parameter is zero.

[0304] In another example, the second terminal can directly determine that the side link paging opportunity is not related to the second offset, and the first paging parameter sent to the first terminal via the first message does not include the second offset. At this time, there is no need to indicate to the first terminal via the first message whether the side link paging opportunity is related to the second offset.

[0305] S603: The first terminal determines a side chain paging opportunity according to the first paging parameter, and monitors a paging message on the direct communication interface according to the side chain paging opportunity.

[0306] In this step, after receiving the first message, the first terminal can determine the side chain paging opportunity according to the first paging parameter in the first message, if the first message contains an indication of whether the side chain paging opportunity is related to the second offset, according to the indication combined with the first paging parameter, and monitor the paging message on the direct communication interface according to the side chain paging opportunity.

[0307] The determination of the side chain paging opportunity may refer to the above-mentioned embodiment and will not be described in detail.

[0308] S604: The second terminal determines an air interface paging opportunity, and monitors a paging message sent by a network device to the first terminal on an air interface according to the air interface paging opportunity.

[0309] In this step, the second terminal determines an air interface paging opportunity, that is, determines a time to monitor a paging message sent by the network device to the first terminal, and monitors the paging message sent by the network device to the first terminal on an air interface according to the air interface paging opportunity.

[0310] In an example, the second terminal may determine the air interface paging opportunity according to the second paging parameter. Determining the air interface paging opportunity according to the second paging parameter may refer to the above embodiment and will not be described in detail.

[0311] In another example, before determining the air interface paging opportunity, the second terminal may receive a second message sent by the first terminal, and the second message includes the air interface paging opportunity and / or the identifier of the first terminal. If the second message includes the air interface paging opportunity, the second terminal can directly obtain the air interface paging opportunity from the second message without determining the air interface paging opportunity based on the second paging parameter. If the second message includes the identifier of the first terminal, the second terminal can combine the identifier of the first terminal and the paging cycle configured by the network device for the air interface, the number of paging frames in the paging cycle, the number of paging times in the paging cycle, and the second offset to obtain the second paging parameter, and then determine the air interface paging opportunity based on the second paging parameter.

[0312] S605: The second terminal receives a paging message from the network device to the first terminal.

[0313] In this step, the second terminal receives the paging message sent by the network device to the first terminal during the process of monitoring the paging message sent by the network device to the first terminal according to the determined air interface paging opportunity.

[0314] S606: The second terminal determines a sidelink paging opportunity of the first terminal according to the first paging parameter.

[0315] S607: The second terminal sends a paging message to the first terminal according to the side link paging opportunity.

[0316] In this step, the process of the second terminal determining the side chain paging opportunity according to the first paging parameter can refer to the description of the aforementioned embodiment, and will not be repeated. After receiving the paging message of the network device paging the first terminal, the second terminal sends the paging message to the first terminal through one or more sub-channels of the direct communication interface according to the side chain paging opportunity.

[0317] In one example, if the second terminal receives a second message sent by the first terminal, and the second message includes an air interface paging opportunity and / or an identifier of the first terminal, the second terminal can determine the side chain paging opportunity based on the air interface paging opportunity and / or the identifier of the first terminal.

[0318] If the second message includes an air interface paging opportunity, the second terminal may obtain the air interface paging opportunity from the second message, and add the first offset based on the air interface paging opportunity, and may also add an inter-interface radio frame offset to obtain a side link paging opportunity.

[0319] Among them, if the second message includes the identifier of the first terminal, the second terminal can combine the identifier of the first terminal and the paging cycle, the number of paging frames in the paging cycle, the number of paging times in the paging cycle, the first offset and other parameters pre-configured for the direct communication interface to obtain the first paging parameters, and then determine the side chain paging timing based on the first paging parameters.

[0320] In some embodiments, after receiving the paging message of the network device paging the first terminal, the second terminal sends the paging message to the first terminal through one or more paging sub-channels configured in the direct communication interface according to the side chain paging opportunity. Therefore, by specifying some sub-channels of the direct communication interface as paging sub-channels, the purpose of saving channel resources is achieved, and the first terminal does not need to monitor all sub-channels of the direct communication interface, and the second terminal does not need to send paging messages to the first terminal through all sub-channels of the direct communication interface, thereby reducing the power consumption of the terminal.

[0321] In some embodiments, the first message is also used to indicate one or more paging subchannels among the multiple subchannels of the direct communication interface. The paging subchannel is used to transmit the paging message. By specifying some subchannels of the direct communication interface as paging subchannels, the purpose of saving channel resources is achieved, and the first terminal does not need to monitor all subchannels of the direct communication interface, and the second terminal does not need to send paging messages to the first terminal through all subchannels of the direct communication interface, thereby reducing the power consumption of the terminal.

[0322] Specifically, after receiving the first message, the first terminal may monitor the paging message on one or more paging subchannels of the direct communication interface according to the determined side link paging opportunity. After receiving the paging message of the network device paging the first terminal, the second terminal may send the paging message through one or more paging subchannels of the direct communication interface according to the determined side link paging opportunity.

[0323] In some embodiments, the paging message sent by the second terminal to the first terminal via the direct communication interface includes the identifier of the first terminal, so that the first terminal determines whether the paging message is a paging message from the network device to the first terminal according to the identifier of the terminal in the paging message.

[0324] On the terminal side, an embodiment of the present application provides a paging device, such as Figure 7 As shown, the paging device of this embodiment may be a terminal, and the paging device may include a transceiver 701 , a processor 702 , and a memory 703 .

[0325] The transceiver 701 is used to receive and send data under the control of the processor 702 .

[0326] Among them, Figure 7 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 702 and various circuits of memory represented by memory 703 are linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 701 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, which transmission medium includes, these transmission media include transmission media such as wireless channels, wired channels, optical cables, etc. Optionally, the paging device may also include a user interface 704. For different user devices, the user interface 704 may also be an interface capable of externally connecting or internally connecting required devices, and the connected devices include, but are not limited to, a keypad, a display, a speaker, a microphone, a joystick, etc.

[0327] The processor 702 is responsible for managing the bus architecture and general processing, and the memory 703 can store data used by the processor 702 when performing operations.

[0328] Optionally, processor 702 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or a complex programmable logic device (CPLD), and processor 702 may also adopt a multi-core architecture.

[0329] The processor 702 is configured to execute any of the methods related to the first terminal provided in the embodiments of the present application according to the obtained executable instructions by calling the computer program stored in the memory 703. The processor 702 and the memory 703 may also be arranged physically separately.

[0330] Specifically, the processor 702 implements the following operations when executing the computer program stored in the memory 703: determining the side link paging timing according to the discontinuous reception DRX mechanism, the side link paging timing being the timing for the first terminal to monitor the paging message on the direct communication interface for communicating with the second terminal, the second terminal being a terminal that provides a relay service to the first terminal, and the paging message being the paging message for the network device to page the first terminal; and monitoring the paging message on the direct communication interface according to the side link paging timing.

[0331] Optionally, the processor 702 also performs the following operations: determining the side link paging timing according to the first paging parameter; wherein the first paging parameter includes a paging cycle, the number of paging frames in a single paging cycle, a first offset, and an identifier of the first terminal, and the first offset is the offset of the paging frame corresponding to the direct communication interface.

[0332] Optionally, the first paging parameter also includes at least one of the following: a second offset and a wireless frame deviation between interfaces, wherein the second offset is the offset of the paging frame corresponding to the air interface for communication between the network device and the terminal, and the wireless frame deviation between interfaces is the time deviation between the SFN of the air interface and the DFN of the direct communication interface.

[0333] Optionally, the processor 702 further performs the following operations: determining the SFN of the paging frame in the paging cycle according to the paging cycle, the number of paging frames in a single paging cycle, the first offset and the identifier of the first terminal, and according to at least one of the second offset and the radio frame deviation between interfaces.

[0334] Optionally, if the clock synchronization source of the direct communication interface is a network device, the value of the wireless frame deviation between interfaces is zero; or, if the clock synchronization source of the direct communication interface is a satellite, the value of the wireless frame deviation between interfaces is the actual value of the time deviation between the SFN of the air interface and the DFN of the direct communication interface.

[0335] Optionally, the first paging parameter also includes the number of paging times in a single paging cycle, and the side chain paging timing includes the timing of each paging in the paging cycle; the processor 702 also performs the following operations: determining the SFN of the paging frame in the paging cycle according to the paging cycle, the number of paging frames in a single paging cycle, the first offset, and the identifier of the first terminal; determining the SFN corresponding to the first paging of the paging message in the paging cycle according to the number of paging frames in a single paging cycle, the number of paging times in a single paging cycle, and the identifier of the first terminal; determining the timing of each paging in the paging cycle according to the SFN of the paging frame in the paging cycle and the SFN corresponding to the first paging of the paging message in the paging cycle.

[0336] Optionally, the processor 702 further performs the following operations: monitoring a paging message on one or more paging sub-channels of the direct communication interface according to the side link paging occasion.

[0337] Optionally, the processor 702 further performs the following operations: receiving a first message from the second terminal, where the first message includes a first paging parameter.

[0338] Optionally, the first message is further used to indicate at least one of the following: indicating that the sidelink paging opportunity is related to the second offset, or indicating that the sidelink paging opportunity is not related to the second offset; indicating one or more paging subchannels among multiple subchannels of the direct communication interface. Wherein, if the first message indicates that the sidelink paging opportunity is related to the second offset, the first paging parameter includes the second offset; if the first message indicates that the sidelink paging opportunity is not related to the second offset, the first paging parameter does not include the second offset.

[0339] Optionally, the processor 702 further performs the following operations: before monitoring the paging message, sending a second message to the second terminal, the second message including an air interface paging opportunity and / or an identifier of the first terminal, the air interface paging opportunity being a time when the second terminal monitors the paging message on the air interface.

[0340] Optionally, the processor 702 also performs the following operations: before monitoring the paging message, determining the air interface paging timing according to the second paging parameter; sending a second message to the second terminal, the second message including the air interface paging timing and / or the identifier of the first terminal; wherein the second paging parameter includes the paging cycle, the number of paging frames in a single paging cycle, the number of paging times in a single paging cycle, the second offset, and the identifier of the first terminal, the second offset is the offset of the paging frame corresponding to the air interface for communication between the network device and the terminal, and the air interface paging timing is the timing when the second terminal monitors the paging message on the air interface.

[0341] It should be noted here that the above-mentioned device provided in the present application can implement all the method steps implemented by the first terminal in the above-mentioned method embodiment, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0342] On the terminal side, another embodiment of the present application provides a paging device, such as Figure 8 As shown, the paging device of this embodiment may be a terminal, and the paging device may include a transceiver 801 , a processor 802 , and a memory 803 .

[0343] The transceiver 801 is used to receive and send data under the control of the processor 802 .

[0344] Among them, Figure 8 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 802 and various circuits of memory represented by memory 803 are linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 801 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, which transmission medium includes wireless channels, wired channels, optical cables, and other transmission media. Optionally, the paging device may also include a user interface 804. For different user devices, the user interface 804 may also be an interface capable of externally connecting or internally connecting required devices, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

[0345] The processor 802 is responsible for managing the bus architecture and general processing, and the memory 803 can store data used by the processor 802 when performing operations.

[0346] Optionally, the processor 802 may be a CPU, an ASIC, an FPGA or a CPLD, and the processor 802 may also adopt a multi-core architecture.

[0347] The processor 802 is configured to execute any of the methods related to the first terminal provided in the embodiments of the present application according to the obtained executable instructions by calling the computer program stored in the memory 803. The processor 802 and the memory 803 may also be arranged physically separately.

[0348] Specifically, the processor 802 implements the following operations when executing the computer program stored in the memory 803: receiving a paging message from a network device to page the first terminal, where the second terminal is a terminal that provides relay services to the first terminal; determining a side chain paging timing of the first terminal according to a discontinuous transmission DTX mechanism, where the side chain paging timing is a timing when the first terminal listens for a paging message on a direct communication interface for communicating with the second terminal; and sending a paging message to the first terminal through the direct communication interface according to the side chain paging timing.

[0349] Optionally, the processor 802 also performs the following operations: determining the side link paging timing according to the first paging parameter; wherein the first paging parameter includes a paging cycle, the number of paging frames in a single paging cycle, a first offset, and an identifier of the first terminal, and the first offset is the offset of the paging frame corresponding to the direct communication interface.

[0350] Optionally, the first paging parameter also includes at least one of the following: a second offset and a wireless frame deviation between interfaces, wherein the second offset is the offset of the paging frame corresponding to the air interface for communication between the network device and the terminal, and the wireless frame deviation between interfaces is the time deviation between the SFN of the air interface and the DFN of the direct communication interface.

[0351] Optionally, the side link paging opportunity includes the SFN of the paging frame in the paging cycle, and the processor 802 also performs the following operations: determine the SFN of the paging frame in the paging cycle based on the paging cycle, the number of paging frames in a single paging cycle, the first offset, and the identifier of the first terminal, and based on at least one of the second offset and the wireless frame deviation between interfaces.

[0352] Optionally, if the clock synchronization source of the direct communication interface is a network device, the value of the wireless frame deviation between interfaces is zero; or, if the clock synchronization source of the direct communication interface is a satellite, the value of the wireless frame deviation between interfaces is the actual value of the time deviation between the SFN of the air interface and the DFN of the direct communication interface.

[0353] Optionally, the first paging parameter also includes the number of paging times in a single paging cycle, and the side chain paging timing includes the timing of each paging in the paging cycle; the processor 802 also performs the following operations: determining the SFN of the paging frame in the paging cycle according to the paging cycle, the number of paging frames in a single paging cycle, the first offset, and the identifier of the first terminal; determining the SFN corresponding to the first paging of the paging message in the paging cycle according to the number of paging frames in a single paging cycle, the number of paging times in a single paging cycle, and the identifier of the first terminal; determining the timing of each paging in the paging cycle according to the SFN of the paging frame in the paging cycle and the SFN corresponding to the first paging of the paging message in the paging cycle.

[0354] Optionally, the processor 802 further performs the following operations: sending a paging message through one or more paging sub-channels of the direct communication interface according to the side link paging occasion.

[0355] Optionally, the processor 802 further performs the following operations: sending a first message to the first terminal, where the first message includes a first paging parameter.

[0356] Optionally, the first message is also used to indicate at least one of the following: indicating that the side link paging opportunity is related to the second offset, or indicating that the side link paging opportunity is unrelated to the second offset; indicating one or more paging subchannels among multiple subchannels of the direct communication interface; wherein, if the first message indicates that the side link paging opportunity is related to the second offset, the first paging parameter includes the second offset, and if the first message indicates that the side link paging opportunity is unrelated to the second offset, the first paging parameter does not include the second offset.

[0357] Optionally, the processor 802 further performs the following operations: before receiving a paging message from the network device to page the first terminal, determine an air interface paging opportunity, where the air interface paging opportunity is the opportunity for the second terminal to monitor the paging message on the air interface; and monitor the paging message on the air interface according to the air interface paging opportunity.

[0358] Optionally, the processor 802 also performs the following operations: determining the air interface paging timing based on the second paging parameter; wherein the second paging parameter includes the paging cycle, the number of paging frames in a single paging cycle, the number of paging times in a single paging cycle, the second offset, and the identifier of the first terminal, and the second offset is the offset of the paging frame corresponding to the air interface.

[0359] Optionally, the processor 802 also performs the following operations: before receiving the paging message of the network device paging the first terminal, receiving a second message sent by the first terminal; determining the air interface paging timing according to the second message; and monitoring the paging message on the air interface according to the air interface paging timing; wherein the second message includes the air interface paging timing and / or the identifier of the first terminal, and the identifier of the first terminal is used to determine the air interface paging timing and the side link paging timing.

[0360] It should be noted here that the above-mentioned device provided in the present application can implement all the method steps implemented by the second terminal in the above-mentioned method embodiment, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0361] On the terminal side, another embodiment of the present application further provides a paging device, such as Fig. 9 As shown, the paging device of this embodiment may be a terminal, and the paging device includes:

[0362] A determining unit 901 is configured to determine a sidelink paging opportunity according to a discontinuous reception DRX mechanism, where the sidelink paging opportunity is a time when the first terminal monitors a paging message on a direct communication interface for communicating with the second terminal, the second terminal is a terminal that provides a relay service to the first terminal, and the paging message is a paging message for a network device to page the first terminal;

[0363] The monitoring unit 902 is used to monitor the paging message on the direct communication interface according to the side chain paging opportunity.

[0364] Optionally, the determination unit 901 is specifically used to: determine the side chain paging timing according to the first paging parameter; wherein the first paging parameter includes a paging cycle, the number of paging frames in a single paging cycle, a first offset, and an identifier of the first terminal, and the first offset is the offset of the paging frame corresponding to the direct communication interface.

[0365] Optionally, the first paging parameter also includes at least one of the following: a second offset and a wireless frame deviation between interfaces, wherein the second offset is the offset of the paging frame corresponding to the air interface for communication between the network device and the terminal, and the wireless frame deviation between interfaces is the time deviation between the SFN of the air interface and the DFN of the direct communication interface.

[0366] Optionally, if the clock synchronization source of the direct communication interface is a network device, the value of the wireless frame deviation between interfaces is zero; or, if the clock synchronization source of the direct communication interface is a satellite, the value of the wireless frame deviation between interfaces is the actual value of the time deviation between the SFN of the air interface and the DFN of the direct communication interface.

[0367] Optionally, the sidelink paging opportunity includes the SFN of the paging frame in the paging cycle, and the determination unit 901 is specifically used to: determine the SFN of the paging frame in the paging cycle according to the paging cycle, the number of paging frames in a single paging cycle, the first offset and the identifier of the first terminal, and according to at least one of the second offset and the wireless frame deviation between interfaces.

[0368] Optionally, the first paging parameter also includes the number of paging times in a single paging cycle, and the side chain paging timing includes the timing of each paging in the paging cycle; the determination unit 901 is specifically used to: determine the SFN of the paging frame in the paging cycle according to the paging cycle, the number of paging frames in a single paging cycle, the first offset, and the identifier of the first terminal; determine the SFN corresponding to the first paging of the paging message in the paging cycle according to the number of paging frames in a single paging cycle, the number of paging times in a single paging cycle, and the identifier of the first terminal; determine the timing of each paging in the paging cycle according to the SFN of the paging frame in the paging cycle and the SFN corresponding to the first paging of the paging message in the paging cycle.

[0369] Optionally, the monitoring unit 902 is specifically configured to monitor paging messages on one or more paging sub-channels of the direct communication interface according to the side link paging opportunity.

[0370] Optionally, the paging device further includes: a receiving unit 903, configured to receive a first message from the second terminal, where the first message includes a first paging parameter.

[0371] Optionally, the first message is also used to indicate at least one of the following: indicating that the side link paging opportunity is related to the second offset, or indicating that the side link paging opportunity is unrelated to the second offset; indicating one or more paging subchannels among multiple subchannels of the direct communication interface; wherein, if the first message indicates that the side link paging opportunity is related to the second offset, the first paging parameter includes the second offset, and if the first message indicates that the side link paging opportunity is unrelated to the second offset, the first paging parameter does not include the second offset.

[0372] Optionally, the paging device also includes a sending unit 904, which is used to: determine the air interface paging timing according to the second paging parameter before monitoring the paging message; send a second message to the second terminal, the second message including the air interface paging timing and / or the identifier of the first terminal; wherein the second paging parameter includes the paging cycle, the number of paging frames in a single paging cycle, the number of paging times in a single paging cycle, a second offset, and the identifier of the first terminal, the second offset is the offset of the paging frame corresponding to the air interface for communication between the network device and the terminal, and the air interface paging timing is the timing when the second terminal monitors the paging message on the air interface.

[0373] It should be noted here that the above-mentioned device provided in the present application can implement all the method steps implemented by the first terminal in the above-mentioned method embodiment, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0374] On the terminal side, another embodiment of the present application further provides a paging device, such as Fig.10 As shown, the paging device of this embodiment may be a terminal, and the paging device includes:

[0375] The receiving unit 1001 is configured to receive a paging message from a network device to a first terminal, where the second terminal is a terminal that provides a relay service to the first terminal;

[0376] The determining unit 1002 is configured to determine a sidelink paging opportunity of the first terminal according to a discontinuous transmission DTX mechanism, where the sidelink paging opportunity is a time when the first terminal monitors a paging message on a direct communication interface for communicating with the second terminal;

[0377] The sending unit 1003 is configured to send a paging message to the first terminal through the direct communication interface according to the side link paging opportunity.

[0378] Optionally, the determination unit 1002 is specifically configured to: determine the sidelink paging opportunity according to a first paging parameter, wherein the first paging parameter includes a paging cycle, the number of paging frames in a single paging cycle, a first offset, and an identifier of the first terminal, and the first offset is an offset of a paging frame corresponding to the direct communication interface.

[0379] Optionally, the first paging parameter also includes at least one of the following: a second offset and a wireless frame deviation between interfaces, wherein the second offset is the offset of the paging frame corresponding to the air interface for communication between the network device and the terminal, and the wireless frame deviation between interfaces is the time deviation between the SFN of the air interface and the DFN of the direct communication interface.

[0380] Optionally, the side link paging opportunity includes the SFN of the paging frame in the paging cycle, and the determination unit is specifically used to: determine the SFN of the paging frame in the paging cycle according to the paging cycle, the number of paging frames in a single paging cycle, the first offset, and the identifier of the first terminal, and according to at least one of the second offset and the wireless frame deviation between interfaces.

[0381] Optionally, if the clock synchronization source of the direct communication interface is a network device, the value of the wireless frame deviation between interfaces is zero; or, if the clock synchronization source of the direct communication interface is a satellite, the value of the wireless frame deviation between interfaces is the actual value of the time deviation between the SFN of the air interface and the DFN of the direct communication interface.

[0382] Optionally, the first paging parameter also includes the number of paging times in a single paging cycle, and the side chain paging timing includes the timing of each paging in the paging cycle; the determination unit 1002 is specifically used to: determine the SFN of the paging frame in the paging cycle according to the paging cycle, the number of paging frames in a single paging cycle, the first offset, and the identifier of the first terminal; determine the SFN corresponding to the first paging of the paging message in the paging cycle according to the number of paging frames in a single paging cycle, the number of paging times in a single paging cycle, and the identifier of the first terminal; determine the timing of each paging in the paging cycle according to the SFN of the paging frame in the paging cycle and the SFN corresponding to the first paging of the paging message in the paging cycle.

[0383] Optionally, the sending unit 1003 is specifically configured to send a paging message through one or more paging sub-channels of the direct communication interface according to the side link paging opportunity.

[0384] Optionally, the sending unit 1003 is further used to: send a first message to the first terminal, where the first message includes a first paging parameter.

[0385] Optionally, the first message is also used to indicate at least one of the following: indicating that the side link paging opportunity is related to the second offset, or indicating that the side link paging opportunity is unrelated to the second offset; indicating one or more paging subchannels among multiple subchannels of the direct communication interface; wherein, if the first message indicates that the side link paging opportunity is related to the second offset, the first paging parameter includes the second offset, and if the first message indicates that the side link paging opportunity is unrelated to the second offset, the first paging parameter does not include the second offset.

[0386] Optionally, the receiving unit 1001 is also used to: receive a second message sent by the first terminal before receiving a paging message from a network device to page the first terminal; determine an air interface paging timing based on the second message; and monitor paging messages on the air interface according to the air interface paging timing; wherein the second message includes an identifier of the air interface paging timing and / or the first terminal, and the identifier of the first terminal is used to determine the air interface paging timing and the side chain paging timing.

[0387] It should be noted here that the above-mentioned device provided in the present application can implement all the method steps implemented by the second terminal in the above-mentioned method embodiment, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0388] It should be noted that the division of units in the embodiments of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. In addition, each functional unit in each embodiment of the present application may be integrated into a processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0389] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) or a processor (processor) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store program codes.

[0390] On the terminal side, an embodiment of the present application provides a processor-readable storage medium, which stores a computer program, and the computer program is used to enable the processor to execute any of the methods related to the terminal provided in the embodiments of the present application. The processor is enabled to implement all the method steps implemented by the terminal in the above method embodiment, and the same technical effect can be achieved. The parts and beneficial effects that are the same as those in the method embodiment in this embodiment will not be specifically described here.

[0391] On the network side, an embodiment of the present application provides a processor-readable storage medium, which stores a computer program, and the computer program is used to enable the processor to execute any of the methods related to the network device provided in the embodiments of the present application. The processor is enabled to implement all the method steps implemented by the network device in the above method embodiment, and the same technical effect can be achieved. The parts and beneficial effects that are the same as those in the method embodiment in this embodiment will not be specifically described here.

[0392] The processor-readable storage medium can be any available medium or data storage device that can be accessed by the processor, including but not limited to magnetic storage (such as floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO), etc.), optical storage (such as CD, DVD, BD, HVD, etc.), and semiconductor storage (such as ROM, EPROM, EEPROM, non-volatile memory (NANDFLASH), solid-state drive (SSD)), etc.

[0393] On the terminal side, an embodiment of the present application provides a computer program product comprising instructions. When the instructions are executed on a computer, the computer executes all the method steps implemented by the terminal in the above method embodiment and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those in the method embodiment will not be described in detail here.

[0394] On the network side, an embodiment of the present application provides a computer program product comprising instructions. When the instructions are executed on a computer, the computer executes all the method steps implemented by the network device in the above method embodiment and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those in the method embodiment will not be described in detail here.

[0395] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) that contain computer-usable program code.

[0396] The present application is described with reference to the flowcharts and / or block diagrams of the methods, apparatuses, and computer program products according to the embodiments of the present application. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of the processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer executable instructions. These computer executable instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0397] These processor executable instructions may also be stored in a processor readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the processor readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0398] These processor-executable instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for executing on the computer or other programmable device to implement the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0399] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A paging method, applied to a first terminal, characterized in that: The paging method comprises: Determine, according to the discontinuous reception DRX mechanism, a sidelink paging opportunity, where the sidelink paging opportunity is a time when the first terminal monitors a paging message on a direct communication interface for communicating with a second terminal, the second terminal is a terminal that provides a relay service to the first terminal, and the paging message is a paging message for a network device to page the first terminal; According to the side chain paging opportunity, monitoring the paging message on the direct communication interface; The determining of the side chain paging opportunity according to the discontinuous reception DRX mechanism includes: Determining the side chain paging opportunity according to the first paging parameter; The first paging parameter includes a paging cycle, a number of paging frames in a single paging cycle, a first offset, and an identifier of the first terminal; the first offset is an offset of a paging frame corresponding to the direct communication interface; The first paging parameter also includes a wireless frame deviation between interfaces, or a second offset and the wireless frame deviation between interfaces; the second offset is the offset of the paging frame corresponding to the air interface for communication between the network device and the terminal, and the wireless frame deviation between interfaces is the time deviation between the system frame number SFN of the air interface and the direct communication interface frame number DFN of the direct communication interface.

2. The paging method according to claim 1, characterized in that: The determining the side chain paging opportunity according to the first paging parameter includes: The DFN of the paging frame in the paging cycle is determined according to the paging cycle, the number of paging frames in a single paging cycle, the first offset and the identifier of the first terminal, and at least one of the second offset and the radio frame deviation between the interfaces.

3. The paging method according to claim 1, characterized in that: If the clock synchronization source of the direct communication interface is the network device, the value of the wireless frame deviation between the interfaces is zero; Alternatively, if the clock synchronization source of the direct communication interface is a satellite, the value of the wireless frame deviation between the interfaces is the actual value of the time deviation between the SFN of the air interface and the DFN of the direct communication interface.

4. The paging method according to any one of claims 1 to 3, characterized in that: The first paging parameter also includes the number of paging times in a single paging cycle, and the side chain paging occasion includes the occasion of each paging in the paging cycle; The determining the side chain paging opportunity according to the first paging parameter includes: Determine a DFN of a paging frame in a paging cycle according to a paging cycle, the number of paging frames in a single paging cycle, the first offset, and an identifier of the first terminal; Determine, according to the number of paging frames in a single paging cycle, the number of paging times in a single paging cycle, and the identifier of the first terminal, a DFN corresponding to the first paging in the paging cycle; The timing of each paging in the paging cycle is determined according to the DFN of the paging frame in the paging cycle and the DFN corresponding to the first paging in the paging cycle.

5. The paging method according to any one of claims 1 to 3, characterized in that: The monitoring the paging message on the direct communication interface according to the side chain paging opportunity includes: According to the side chain paging occasion, the paging message is monitored on one or more paging sub-channels of the direct communication interface.

6. The paging method according to any one of claims 1 to 3, characterized in that: Also includes: receiving a first message from the second terminal, where the first message includes the first paging parameter, and the first message is further used to indicate at least one of the following: Indicating that the side chain paging opportunity is related to the second offset, or indicating that the side chain paging opportunity is not related to the second offset; Indicating one or more paging subchannels among a plurality of subchannels of the direct communication interface; Among them, if the first message indicates that the side link paging opportunity is related to the second offset, the first paging parameter includes the second offset; if the first message indicates that the side link paging opportunity is not related to the second offset, the first paging parameter does not include the second offset.

7. The paging method according to any one of claims 1 to 3, characterized in that: Also includes: Before monitoring the paging message, determining an air interface paging opportunity according to a second paging parameter; Sending a second message to the second terminal, where the second message includes the air interface paging opportunity and / or an identifier of the first terminal; Among them, the second paging parameters include a paging cycle, the number of paging frames in a single paging cycle, the number of paging times in a single paging cycle, a second offset, and an identifier of the first terminal. The second offset is the offset of the paging frame corresponding to the air interface for communication between the network device and the terminal, and the air interface paging timing is the timing for the second terminal to listen to the paging message on the air interface.

8. A paging method, applied to a second terminal, characterized in that: The paging method comprises: receiving a paging message from a network device to a first terminal, where the second terminal is a terminal that provides a relay service to the first terminal; Determine, according to a discontinuous transmission (DTX) mechanism, a sidelink paging opportunity of the first terminal, where the sidelink paging opportunity is a time when the first terminal monitors the paging message on a direct communication interface for communicating with the second terminal; sending the paging message to the first terminal through the direct communication interface according to the side chain paging opportunity; The determining, according to the discontinuous transmission (DTX) mechanism, a side chain paging opportunity of the first terminal includes: Determining the side chain paging opportunity according to the first paging parameter; The first paging parameter includes a paging cycle, a number of paging frames in a single paging cycle, a first offset, an identifier of the first terminal, and a second offset and / or an inter-interface radio frame deviation; the first offset is an offset of a paging frame corresponding to the direct communication interface; The first paging parameter also includes a wireless frame deviation between interfaces, or a second offset and the wireless frame deviation between interfaces; the second offset is the offset of the paging frame corresponding to the air interface for communication between the network device and the terminal, and the wireless frame deviation between interfaces is the time deviation between the system frame number SFN of the air interface and the direct communication interface frame number DFN of the direct communication interface.

9. The paging method according to claim 8, characterized in that: The determining the side chain paging opportunity according to the first paging parameter includes: The DFN of the paging frame in the paging cycle is determined according to the paging cycle, the number of paging frames in a single paging cycle, the first offset, and the identifier of the first terminal, and according to at least one of the second offset and the wireless frame deviation between the interfaces.

10. The paging method according to claim 8 or 9, characterized in that: The first paging parameter also includes the number of paging times in a single paging cycle, and the side chain paging occasion includes the occasion of each paging in the paging cycle; The determining the side chain paging opportunity according to the first paging parameter includes: Determine a DFN of a paging frame in a paging cycle according to a paging cycle, the number of paging frames in a single paging cycle, the first offset, and an identifier of the first terminal; Determine, according to the number of paging frames in a single paging cycle, the number of pagings in a single paging cycle, and the identifier of the first terminal, a DFN corresponding to the first paging in the paging cycle; The timing of each paging in the paging cycle is determined according to the DFN of the paging frame in the paging cycle and the DFN corresponding to the first paging in the paging cycle.

11. The paging method according to claim 8 or 9, characterized in that: The sending the paging message to the first terminal through the direct communication interface according to the side link paging opportunity includes: The paging message is sent through one or more paging sub-channels of the direct communication interface according to the side chain paging occasion.

12. The paging method according to claim 8 or 9, characterized in that: Also includes: Sending a first message to the first terminal, where the first message includes the first paging parameter, and the first message is further used to indicate at least one of the following: Indicating that the side chain paging opportunity is related to the second offset, or indicating that the side chain paging opportunity is not related to the second offset; Indicating one or more paging subchannels among a plurality of subchannels of the direct communication interface; Among them, if the first message indicates that the side link paging opportunity is related to the second offset, the first paging parameter includes the second offset; if the first message indicates that the side link paging opportunity is not related to the second offset, the first paging parameter does not include the second offset.

13. The paging method according to claim 8 or 9, characterized in that: Also includes: Before receiving the paging message sent by the network device to the first terminal, receiving a second message sent by the first terminal; Determining an air interface paging opportunity according to the second message; According to the air interface paging opportunity, monitoring the paging message on the air interface; The second message includes the air interface paging opportunity and / or the identifier of the first terminal, and the identifier of the first terminal is used to determine the air interface paging opportunity and the side link paging opportunity.

14. A paging device, applied to a first terminal, characterized in that: The paging device includes a memory, a transceiver and a processor; The memory is used to store computer programs; The transceiver is used to send and receive data under the control of the processor; The processor is configured to read the computer program in the memory and perform the following operations: Determine, according to the DRX mechanism, a sidelink paging opportunity, where the sidelink paging opportunity is a time when the first terminal monitors a paging message on a direct communication interface for communicating with a second terminal, where the second terminal is a terminal that provides a relay service to the first terminal, and the paging message is a paging message for a network device to page the first terminal; According to the side chain paging opportunity, monitoring the paging message on the direct communication interface; The processor also performs the following operations: Determining the side chain paging opportunity according to the first paging parameter; The first paging parameter includes a paging cycle, a number of paging frames in a single paging cycle, a first offset, an identifier of the first terminal, and a second offset and / or an inter-interface radio frame deviation; the first offset is an offset of a paging frame corresponding to the direct communication interface; The first paging parameter also includes a wireless frame deviation between interfaces, or a second offset and the wireless frame deviation between interfaces; the second offset is the offset of the paging frame corresponding to the air interface for communication between the network device and the terminal, and the wireless frame deviation between interfaces is the time deviation between the system frame number SFN of the air interface and the direct communication interface frame number DFN of the direct communication interface.

15. The paging device according to claim 14, characterized in that: The processor also performs the following operations: The DFN of the paging frame in the paging cycle is determined according to the paging cycle, the number of paging frames in a single paging cycle, the first offset and the identifier of the first terminal, and at least one of the second offset and the radio frame deviation between the interfaces.

16. The paging device according to claim 14 or 15, characterized in that: The first paging parameter also includes the number of paging times in a single paging cycle, and the side chain paging occasion includes the occasion of each paging in the paging cycle; The processor also performs the following operations: Determine a DFN of a paging frame in a paging cycle according to a paging cycle, the number of paging frames in a single paging cycle, the first offset, and an identifier of the first terminal; Determine a DFN corresponding to the first paging in a paging cycle according to the number of paging frames in a single paging cycle, the number of pagings in a single paging cycle, and the first terminal identifier; The timing of transmitting the paging message for the first time in the paging cycle is determined according to the DFN of the paging frame in the paging cycle and the DFN corresponding to the first paging in the paging cycle.

17. The paging device according to claim 14 or 15, characterized in that: The processor also performs the following operations: According to the side chain paging occasion, the paging message is monitored on one or more paging sub-channels of the direct communication interface.

18. The paging device according to claim 14 or 15, characterized in that: The processor also performs the following operations: receiving a first message from the second terminal, where the first message includes the first paging parameter, and the first message is further used to indicate at least one of the following: Indicating that the side chain paging opportunity is related to the second offset, or indicating that the side chain paging opportunity is not related to the second offset; Indicating one or more paging subchannels among a plurality of subchannels of the direct communication interface; Among them, if the first message indicates that the side link paging opportunity is related to the second offset, the first paging parameter includes the second offset; if the first message indicates that the side link paging opportunity is not related to the second offset, the first paging parameter does not include the second offset.

19. The paging device according to claim 14 or 15, characterized in that: The processor is further configured to perform the following operations: Before monitoring the paging message, determining an air interface paging opportunity according to a second paging parameter; Sending a second message to the second terminal, where the second message includes the air interface paging opportunity and / or an identifier of the first terminal; Among them, the second paging parameters include a paging cycle, the number of paging frames in a single paging cycle, the number of paging times in a single paging cycle, a second offset, and an identifier of the first terminal. The second offset is the offset of the paging frame corresponding to the air interface for communication between the network device and the terminal, and the air interface paging timing is the timing for the second terminal to listen to the paging message on the air interface.

20. A paging device, applied to a second terminal, characterized in that: The paging device includes a memory, a transceiver and a processor; The memory is used to store computer programs; The transceiver is used to send and receive data under the control of the processor; The processor is configured to read the computer program in the memory and perform the following operations: receiving a paging message from a network device to a first terminal, where the second terminal is a terminal that provides a relay service to the first terminal; Determine, according to the DTX mechanism, a sidelink paging opportunity of the first terminal, where the sidelink paging opportunity is a time when the first terminal monitors the paging message on a direct communication interface for communicating with the second terminal; sending the paging message to the first terminal through the direct communication interface according to the side chain paging opportunity; The processor is further configured to perform the following operations: Determining the side chain paging opportunity according to the first paging parameter; The first paging parameter includes a paging cycle, a number of paging frames in a single paging cycle, a first offset, an identifier of the first terminal, and a second offset and / or an inter-interface radio frame deviation; the first offset is an offset of a paging frame corresponding to the direct communication interface; The first paging parameter also includes a wireless frame deviation between interfaces, or a second offset and the wireless frame deviation between interfaces; the second offset is the offset of the paging frame corresponding to the air interface for communication between the network device and the terminal, and the wireless frame deviation between interfaces is the time deviation between the system frame number SFN of the air interface and the direct communication interface frame number DFN of the direct communication interface.

21. The paging device according to claim 20, characterized in that: The processor also performs the following operations: The DFN of the paging frame in the paging cycle is determined according to the paging cycle, the number of paging frames in a single paging cycle, the first offset, and the identifier of the first terminal, and according to at least one of the second offset and the wireless frame deviation between the interfaces.

22. The paging device according to claim 20 or 21, characterized in that: The first paging parameter also includes the number of paging times in a single paging cycle, and the side chain paging occasion includes the occasion of each paging in the paging cycle; The processor is further configured to perform the following operations: Determine a DFN of a paging frame in a paging cycle according to a paging cycle, the number of paging frames in a single paging cycle, the first offset, and an identifier of the first terminal; Determine, according to the number of paging frames in a single paging cycle, the number of pagings in a single paging cycle, and the identifier of the first terminal, a DFN corresponding to the first paging in the paging cycle; The timing of each paging in the paging cycle is determined according to the DFN of the paging frame in the paging cycle and the DFN corresponding to the first paging in the paging cycle.

23. The paging device according to claim 20 or 21, characterized in that: The processor also performs the following operations: The paging message is sent through one or more paging sub-channels of the direct communication interface according to the side chain paging occasion.

24. The paging device according to claim 20 or 21, characterized in that: The processor also performs the following operations: Sending a first message to the first terminal, where the first message includes the first paging parameter, and the first message is further used to indicate at least one of the following: Indicating that the side chain paging opportunity is related to the second offset, or indicating that the side chain paging opportunity is not related to the second offset; Indicating one or more paging subchannels among a plurality of subchannels of the direct communication interface; Among them, if the first message indicates that the side link paging opportunity is related to the second offset, the first paging parameter includes the second offset; if the first message indicates that the side link paging opportunity is not related to the second offset, the first paging parameter does not include the second offset.

25. The paging device according to claim 20 or 21, characterized in that: The processor also performs the following operations: Before receiving the paging message sent by the network device to the first terminal, receiving a second message sent by the first terminal; Determining an air interface paging opportunity according to the second message; According to the air interface paging opportunity, monitoring the paging message on the air interface; The second message includes the air interface paging opportunity and / or the identifier of the first terminal, and the identifier of the first terminal is used to determine the air interface paging opportunity and the side link paging opportunity.

26. A paging device, applied to a first terminal, characterized in that: The paging device comprises: a determining unit, configured to determine a sidelink paging opportunity according to a discontinuous reception DRX mechanism, wherein the sidelink paging opportunity is a time when the first terminal monitors a paging message on a direct communication interface for communicating with a second terminal, the second terminal is a terminal providing a relay service to the first terminal, and the paging message is a paging message for a network device to page the first terminal; A monitoring unit, configured to monitor the paging message on the direct communication interface according to the side chain paging opportunity; The determining unit is specifically configured to determine the side chain paging opportunity according to the first paging parameter; The first paging parameter includes a paging cycle, a number of paging frames in a single paging cycle, a first offset, an identifier of the first terminal, and a second offset and / or an inter-interface radio frame deviation; the first offset is an offset of a paging frame corresponding to the direct communication interface; The first paging parameter also includes a wireless frame deviation between interfaces, or a second offset and the wireless frame deviation between interfaces; the second offset is the offset of the paging frame corresponding to the air interface for communication between the network device and the terminal, and the wireless frame deviation between interfaces is the time deviation between the system frame number SFN of the air interface and the direct communication interface frame number DFN of the direct communication interface.

27. A paging device, applied to a second terminal, characterized in that: The paging device comprises: A receiving unit, configured to receive a paging message from a network device to a first terminal, wherein the second terminal is a terminal that provides a relay service to the first terminal; a determining unit, configured to determine a sidelink paging opportunity of the first terminal according to a discontinuous transmission DTX mechanism, wherein the sidelink paging opportunity is a time when the first terminal monitors the paging message on a direct communication interface for communicating with the second terminal; a sending unit, configured to send the paging message to the first terminal through the direct communication interface according to the side chain paging opportunity; The determining unit is specifically configured to determine the side chain paging opportunity according to the first paging parameter; The first paging parameter includes a paging cycle, a number of paging frames in a single paging cycle, a first offset, an identifier of the first terminal, and a second offset and / or an inter-interface radio frame deviation; the first offset is an offset of a paging frame corresponding to the direct communication interface; The first paging parameter also includes a wireless frame deviation between interfaces, or a second offset and the wireless frame deviation between interfaces; the second offset is the offset of the paging frame corresponding to the air interface for communication between the network device and the terminal, and the wireless frame deviation between interfaces is the time deviation between the system frame number SFN of the air interface and the direct communication interface frame number DFN of the direct communication interface.

28. A processor-readable storage medium, characterized in that: The processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the paging method according to any one of claims 1 to 13.

29. A computer program product, characterized in that The computer program product comprises computer instructions, and the computer instructions are used to cause a processor to execute the paging method according to any one of claims 1 to 13.

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