Communication method and device

Abstract

The invention discloses a communication method and device. The method comprises the following steps: the network equipment determines and sends indication information; and the terminal receives the indication information and determines whether to monitor the paging opportunity PO according to the indication information. Wherein the indication information indicates at least one of the following items: whether the paging message comprises first information, whether the paging message comprises second information, or whether the paging message comprises third information; the first information indicates the multicast service, the second information indicates whether the current cell provides the multicast service for the non-connected terminal, and the third information indicates that the multicast service is not received. Based on the scheme, a receiving mechanism for receiving the paging message in the multicast scene is clearly designed, so that the terminal can determine whether to monitor the PO according to the indication information of the network equipment. When the terminal determines not to monitor the PO, the power consumption of the terminal can be saved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of communications, and in particular, to a communication method and device. Background Art

[0002] Typically, a terminal monitors a paging occasion (PO) in each discontinuous reception (DRX) cycle to determine whether the terminal is paged. However, the network may not page a terminal in each PO, that is, the terminal monitors the PO but does not receive the corresponding scheduling and paging in the PO, resulting in a waste of power consumption of the terminal.

[0003] In order to reduce the power consumption of the terminal, the 3rd generation partnership project (3GPP) introduced paging early identification (PEI). Before PO, the network can send PEI to the terminal to indicate whether the terminal monitors its associated PO. If the terminal does not monitor PEI during the monitored PEI opportunity, or PEI does not instruct the terminal to monitor its associated PO, the terminal may not monitor PO to achieve the purpose of energy saving. If PEI instructs the terminal to monitor its associated PO, the terminal monitors the PO.

[0004] However, the above PEI mechanism is designed for unicast services. After the introduction of multicast services, the receiving mechanism of paging messages corresponding to the multicast services has not yet been clarified. Summary of the invention

[0005] The present application provides a communication method and apparatus, which clearly designs a receiving mechanism for paging messages in a multicast scenario, and enables a terminal to determine whether to monitor PO according to indication information of a network device.

[0006] In a first aspect, a communication method is provided, which can be executed by a terminal, or by a component of the terminal, such as a processor, chip, or chip system of the terminal, or by a logic module or software that can implement all or part of the terminal functions. The method includes: receiving indication information, the indication information indicating at least one of the following: whether the paging message includes the first information, whether the paging message includes the second information, or whether the paging message includes the third information; the first information indicates a multicast service, the second information indicates whether the current cell provides a multicast service to a non-connected terminal, and the third information indicates that the multicast service is not received. Determine whether to monitor the paging opportunity PO according to the indication information.

[0007] Based on this solution, the terminal can learn through the indication information whether the paging message includes: first information for indicating the multicast service, second information for indicating whether the current cell provides the multicast service to the non-connected terminal, and third information for indicating that the multicast service is not received, thereby clarifying the multicast service-related information included in the paging message, and then determining whether to monitor the PO. In the case where the terminal determines not to monitor the PO, compared with the terminal always monitoring the PO, the power consumption of the terminal can be reduced, which is beneficial to the energy saving of the terminal.

[0008] In one possible design, determining whether to monitor PO based on indication information includes: determining to monitor PO in at least one of the following situations: the indication information indicates that the paging message includes the first information; the indication information indicates that the paging message includes the first information and / or the second information; the indication information indicates that the paging message includes the first information and / or the third information; the indication information indicates that the paging message includes at least one of the first information, the second information, or the third information. Alternatively, determining not to monitor PO in at least one of the following situations: the indication information indicates that the paging message does not include the first information; the indication information indicates that the paging message does not include the first information and the second information; the indication information indicates that the paging message does not include the first information and the third information; the indication information indicates that the paging message does not include the first information, the second information, and the third information.

[0009] Based on this possible design, when the paging message may include the first information, the terminal determines to monitor the PO. Since the first information may indicate a multicast service that the network is about to send or activate, monitoring the PO when the paging message may include the first information can avoid missing the first information, thereby avoiding the multicast service that should be received but is not received, thereby improving service continuity. In addition, when the paging message does not include the first information, the terminal determines not to monitor the PO, which can reduce the power consumption of the terminal compared to the terminal always monitoring the PO.

[0010] In one possible design, determining whether to monitor PO is based on indication information, including: determining to monitor PO when the indication information indicates that the paging message does not include the first information, or when the indication information indicates that the paging message does not include the first information and the second information.

[0011] Based on this possible design, when the indication information indicates that the paging message does not include the first information, or indicates that the paging message does not include the first information and the second information, the terminal can monitor the PO to avoid missing the notification sent by the network device that the multicast service is not received, that is, avoid missing the third information in the paging message, thereby avoiding monitoring the PDCCH when the network device does not send the multicast service, thereby saving terminal power consumption.

[0012] In one possible design, whether to monitor PO is determined according to the indication information, including: when the indication information indicates that the paging message does not include the first information, or the indication information indicates that the paging message does not include the first information and the second information: if the terminal is interested in the multicast service deactivation notification, determine to monitor PO; if the terminal is not interested in the multicast service deactivation notification, determine not to monitor PO.

[0013] Based on this possible design, when the indication information indicates that the paging message does not include the first information, or indicates that the paging message does not include the second information and the second information, the terminal cannot determine whether the paging message includes the third information. At this time, if the terminal is interested in the multicast service deactivation notification, it can monitor the PO to avoid missing the third information sent by the network device, thereby avoiding the waste of power consumption caused by missing the third information. If the terminal is not interested in the multicast service deactivation notification, it is not necessary to monitor the PO. In the case where the terminal is not interested in the multicast service deactivation notification, even if the paging message carries the third information, the third information indicates the multicast service that the terminal is not interested in, so that the terminal does not need to monitor the PO, saving power consumption.

[0014] In one possible design, determining whether to monitor PO is based on indication information, including: determining to monitor PO in at least one of the following cases: the indication information indicates that the paging message includes the second information; the indication information indicates that the paging message does not include the second information; the indication information indicates that the paging message includes the third information; the indication information indicates that the paging message does not include the third information; the indication information indicates that the paging message does not include the second and third information; the indication information indicates that the paging message includes the second information and / or the third information.

[0015] Based on this possible design, in any of the above cases, the indication information cannot indicate whether the paging message includes the first information. In the case where the paging message includes the first information, the first information may indicate a multicast service, that is, the network is about to send the multicast service or activate the session of the multicast service. At this time, if the terminal does not monitor the PO, the terminal will miss part of the data of the multicast service, thereby affecting the multicast service and reducing the user experience. Therefore, the terminal can monitor the PO to avoid missing the first information, thereby avoiding not receiving the multicast service that should be received, and improving service continuity.

[0016] In one possible design, the indication information is 1-bit information.

[0017] In one possible design, the indication information includes first indication information and second indication information; wherein the first indication information indicates whether the paging message includes the first information and / or the second information, and the second indication information indicates whether the paging message includes the third information.

[0018] In one possible design, determining whether to monitor PO is based on the indication information, including: when the first indication information indicates that the paging message includes the first information and / or the second information, determining to monitor PO; or, when the first indication information indicates that the paging message does not include the first information and the second information, and the second indication information indicates that the paging message does not include the third information, determining not to monitor PO; or, when the first indication information indicates that the paging message does not include the first information and the second information, and the second indication information indicates that the paging message includes the third information, determining to monitor or not monitor PO.

[0019] In one possible design, the indication information includes first indication information and second indication information; wherein the first indication information indicates whether the paging message includes the first information, and the second indication information indicates whether the paging message includes the second information and / or the third information.

[0020] In one possible design, determining whether to monitor PO is based on the indication information, including: when the first indication information indicates that the paging message includes the first information, determining to monitor PO; or, when the first indication information indicates that the paging message does not include the first information, and the second indication information indicates that the paging message does not include the second information and the third information, determining not to monitor PO; or, when the first indication information indicates that the paging message does not include the first information, and the second indication information indicates that the paging message includes the second information and / or the third information, determining to monitor or not monitor PO.

[0021] In one possible design, the indication information includes first indication information and second indication information; wherein the first indication information indicates whether the paging message includes the first information and / or the third information, and the second indication information indicates whether the paging message includes the second information.

[0022] In one possible design, whether to monitor PO is determined based on the indication information, including: when the first indication information indicates that the paging message includes the first information and / or the third information, determining to monitor PO; or when the first indication information indicates that the paging message does not include the first information and the third information, determining not to monitor PO.

[0023] In one possible design, the indication information includes first indication information and second indication information; wherein the first indication information indicates whether the paging message includes the first information, and the second indication information indicates whether the paging message includes the second information.

[0024] In one possible design, whether to monitor PO is determined according to the indication information, including: when the first indication information indicates that the paging message includes the first information, determining to monitor PO; or when the first indication information indicates that the paging message does not include the first information and the second indication information indicates that the paging message does not include the second information, determining whether to monitor PO or not.

[0025] In one possible design, the indication information includes first indication information and second indication information; wherein the first indication information indicates whether the paging message includes the first information, and the second indication information indicates whether the paging message includes the third information.

[0026] In one possible design, whether to monitor PO is determined according to the indication information, including: when the first indication information indicates that the paging message includes the first information, determining to monitor PO; or, when the first indication information indicates that the paging message does not include the first information, and the second indication information indicates that the paging message does not include the third information, determining not to monitor PO; or, when the first indication information indicates that the paging message does not include the first information, and the second indication information indicates that the paging message includes the third information, determining to monitor or not monitor PO.

[0027] In one possible design, determining not to monitor or not to listen to PO includes: when the terminal is a terminal receiving multicast service in a connected state, determining not to monitor PO; or, when the terminal is a terminal receiving multicast service in a non-connected state, determining to monitor PO; or, when the terminal is a terminal receiving multicast service in a non-connected state, and the terminal is not interested in multicast service deactivation notification, determining not to monitor PO; or, when the terminal is a terminal receiving multicast service in a non-connected state, and the terminal is interested in multicast service deactivation notification, determining to monitor PO.

[0028] In one possible design, the indication information includes first indication information and second indication information; wherein the first indication information indicates whether the paging message includes the second information, and the second indication information indicates whether the paging message includes the third information.

[0029] In one possible design, determining whether to monitor PO is based on indication information, including: determining to monitor PO in at least one of the following cases: the first indication information indicates that the paging message includes the second information; the first indication information indicates that the paging message does not include the second information; the second indication information indicates that the paging message includes the third information; the second indication information indicates that the paging message does not include the third information.

[0030] In a possible design, the indication information is carried in the paging early indication PEI.

[0031] In a second aspect, a communication method is provided, which can be executed by a network device, or by a component of the network device, such as a processor, chip, or chip system of the network device, or by a logic module or software that can implement all or part of the network device functions. The method includes: determining indication information, and sending the indication information. The indication information indicates at least one of the following: whether the paging message includes the first information, whether the paging message includes the second information, or whether the paging message includes the third information; the first information indicates a multicast service, the second information indicates whether the current cell provides a multicast service to a non-connected terminal, and the third information indicates that the multicast service is not received. The indication information is used by the terminal to determine whether to monitor the paging opportunity PO.

[0032] Based on this solution, the network device can indicate through indication information whether the paging message includes: first information for indicating a multicast service, second information for indicating whether the current cell provides a multicast service to a non-connected terminal, and third information for indicating that the multicast service is not received, so that the terminal can clearly understand the multicast service-related information included in the paging message, and then determine whether to monitor PO. When the terminal determines not to monitor PO, compared with the terminal always monitoring PO, the power consumption of the terminal can be reduced, which is beneficial to terminal energy saving.

[0033] In one possible design, the indication information includes first indication information and second indication information; wherein the first indication information indicates whether the paging message includes the first information and / or the second information, and the second indication information indicates whether the paging message includes the third information.

[0034] In one possible design, the indication information includes first indication information and second indication information; wherein the first indication information indicates whether the paging message includes the first information, and the second indication information indicates whether the paging message includes the second information and / or the third information.

[0035] In one possible design, the indication information includes first indication information and second indication information; wherein the first indication information indicates whether the paging message includes the first information and / or the third information, and the second indication information indicates whether the paging message includes the second information.

[0036] In one possible design, the indication information includes first indication information and second indication information; wherein the first indication information indicates whether the paging message includes the first information, and the second indication information indicates whether the paging message includes the second information.

[0037] In one possible design, the indication information includes first indication information and second indication information; wherein the first indication information indicates whether the paging message includes the first information, and the second indication information indicates whether the paging message includes the third information.

[0038] In one possible design, the indication information includes first indication information and second indication information; wherein the first indication information indicates whether the paging message includes the second information, and the second indication information indicates whether the paging message includes the third information.

[0039] In one possible design, the indication information is 1-bit information.

[0040] In a possible design, the indication information is carried in the paging early indication PEI.

[0041] In a possible design, the multicast service belongs to a service list, which includes multicast services provided by the network device, or the service list includes multicast services released by the network device and joined by a terminal.

[0042] In one possible design, when the network device sends an indication of the last used cell, the multicast service belongs to the above service list.

[0043] Among them, the technical effects brought about by any possible design in the second aspect can refer to the technical effects brought about by the corresponding design in the above-mentioned first aspect, and will not be repeated here.

[0044] In a third aspect, a communication method is provided, which can be executed by a network device, or by a component of the network device, such as a processor, a chip, or a chip system of the network device, or by a logic module or software that can implement all or part of the network device functions. The method includes: determining indication information, and sending the indication information. The indication information indicates whether the paging message includes an identifier of a multicast service. The multicast service belongs to a service list. The service list includes multicast services provided by the network device, or the service list includes multicast services to which a terminal released by the network device joins.

[0045] Based on the scheme, the indication information indicates whether the paging message includes the identifier of the multicast service in the service list, and the service list includes the multicast service provided by the network device, or the multicast service to which the terminal released by the network device joins. That is, the indication information indicates whether the paging message includes the identifier of the multicast service provided by the network device, or whether it includes the identifier of the multicast service to which the terminal joined by the network device. In the case where the last connection of the terminal is released by the current cell, the multicast service that the terminal is interested in may be the multicast service provided by the network, or the multicast service to which the terminal joined after the network released. Therefore, the indication information indicates whether the paging message includes the identifier of the multicast service in the multicast service list, which can reduce false alarms for such terminals and is beneficial to energy saving for such terminals.

[0046] In one possible design, the method also includes: sending an indication of a last used cell.

[0047] In a fourth aspect, a communication device is provided, which includes a unit or a module, and the unit or the module is used to execute any one of the methods described in the first to third aspects above.

[0048] In a fifth aspect, a communication device is provided for implementing various methods. The communication device may be the terminal in the first aspect, or a device included in the terminal, such as a chip or a chip system; or, the communication device may be the network device in the second aspect or the third aspect, or a device included in the network device, such as a chip or a chip system. The communication device includes a module, unit, or means corresponding to the implementation method, and the module, unit, or means may be implemented by hardware, software, or by executing the corresponding software implementation by hardware. The hardware or software includes one or more modules or units corresponding to the functions.

[0049] In some possible designs, the communication device may include a processing module and a transceiver module. The processing module may be used to implement the processing function in any of the above aspects and any possible implementations thereof. The transceiver module may include a receiving module and a sending module, respectively used to implement the receiving function and the sending function in any of the above aspects and any possible implementations thereof.

[0050] In some possible designs, the transceiver module may be composed of a transceiver circuit, a transceiver, a transceiver or a communication interface.

[0051] In a sixth aspect, a communication device is provided, comprising: a processor and a memory; the memory is used to store computer instructions, and when the processor executes the instructions, the communication device executes the method described in any aspect. The communication device can be the terminal in the first aspect, or a device included in the terminal, such as a chip or a chip system; or the communication device can be the network device in the second or third aspect, or a device included in the network device, such as a chip or a chip system.

[0052] In a seventh aspect, a communication device is provided, comprising: a processor and a communication interface; the communication interface is used to communicate with a module outside the communication device; the processor is used to execute a computer program or instruction so that the communication device executes the method described in any aspect. The communication device can be the terminal in the first aspect, or a device included in the terminal, such as a chip or a chip system; or the communication device can be the network device in the second or third aspect, or a device included in the network device, such as a chip or a chip system.

[0053] In an eighth aspect, a communication device is provided, comprising: at least one processor; the processor is used to execute a computer program or instruction stored in a memory so that the communication device performs the method described in any aspect. The memory may be coupled to the processor, or may be independent of the processor. The communication device may be the terminal in the first aspect, or a device included in the terminal, such as a chip or a chip system; or the communication device may be the network device in the second or third aspect, or a device included in the network device, such as a chip or a chip system.

[0054] In a ninth aspect, a computer-readable storage medium is provided, in which a computer program or instruction is stored, and when the computer-readable storage medium is run on a communication device, the communication device can execute the method described in any one of the aspects.

[0055] In a tenth aspect, a computer program product comprising instructions is provided, which, when executed on a communication device, enables the communication device to execute the method described in any one of the aspects.

[0056] In an eleventh aspect, a communication device (for example, the communication device may be a chip or a chip system) is provided, wherein the communication device includes a processor for implementing the functions involved in any one of the first to third aspects.

[0057] In some possible designs, the communication device includes a memory for storing necessary program instructions and data.

[0058] In some possible designs, when the device is a chip system, it can be composed of a chip or include a chip and other discrete devices.

[0059] It can be understood that when the communication device provided in any one of the fourth to eleventh aspects is a chip, the sending action / function of the communication device can be understood as output information, and the receiving action / function of the communication device can be understood as input information.

[0060] Among them, the technical effects brought about by any design method in the fourth to eleventh aspects can refer to the technical effects brought about by different design methods in the first to third aspects, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] Figure 1 A schematic diagram of the structure of a communication system provided for this application;

[0062] Figure 2 A schematic diagram of the structure of a communication device provided by the present application;

[0063] Figure 3 A schematic diagram of a transmission path of an MBS service provided in this application;

[0064] Figure 4 A schematic diagram of a transmission method of a multicast service provided in this application;

[0065] Figure 5 A schematic diagram of paging for unicast provided in this application;

[0066] Figure 6 A schematic diagram of a paging for multicast provided in this application;

[0067] Figure 7 A schematic diagram of a WUS mechanism provided for this application;

[0068] Figure 8 A schematic diagram of a group WUS mechanism provided for this application;

[0069] Fig. 9 A schematic diagram of a PEI mechanism provided for this application;

[0070] Fig.10 A schematic diagram of a last used cell mechanism provided for this application;

[0071] Fig.11 A flow chart of a communication method provided by this application;

[0072] Fig.12 A schematic diagram of a scenario in which a terminal determines whether to monitor PO according to indication information provided by the present application;

[0073] Fig.13 A schematic diagram of a scenario in which a terminal determines whether to monitor PO according to indication information provided by the present application;

[0074] Fig.14 A schematic diagram of a scenario in which a terminal determines whether to monitor PO according to indication information provided by the present application;

[0075] Fig.15 A schematic diagram of a scenario in which a terminal determines whether to monitor PO according to indication information provided by the present application;

[0076] Fig.16 A flow chart of a communication method provided by this application;

[0077] Fig.17 A schematic diagram of a scenario in which a terminal determines whether to monitor PO according to indication information provided by the present application;

[0078] Fig.18 A schematic diagram of a scenario in which a terminal determines whether to monitor PO according to indication information provided by the present application;

[0079] Fig.19A schematic diagram of a scenario in which a terminal determines whether to monitor PO according to indication information provided by the present application;

[0080] Fig. 20 A schematic diagram of a scenario in which a terminal determines whether to monitor PO according to indication information provided by the present application;

[0081] Fig.21 A schematic diagram of a scenario in which a terminal determines whether to monitor PO according to indication information provided by the present application;

[0082] Fig. 22 A schematic diagram of a scenario in which a terminal determines whether to monitor PO according to indication information provided by the present application;

[0083] Fig.23 A flowchart of another communication method provided by the present application;

[0084] Fig.24 A schematic diagram of the structure of a terminal provided for this application;

[0085] Fig.25 A schematic diagram of the structure of a network device provided for this application;

[0086] Fig.26 A schematic diagram of the structure of another communication device provided in this application. DETAILED DESCRIPTION

[0087] In the description of this application, unless otherwise specified, " / " indicates that the objects associated with each other are in an "or" relationship, for example, A / B can represent A or B; "and / or" in this application is merely a description of the association relationship between associated objects, indicating that three relationships may exist, for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural.

[0088] In the description of this application, unless otherwise specified, "plurality" means two or more than two. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple.

[0089] In addition, in order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" are used to distinguish the same items or similar items with substantially the same functions and effects. Those skilled in the art can understand that words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily limit the difference.

[0090] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a concrete way for easy understanding.

[0091] It is understood that the "embodiment" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, the various embodiments in the entire specification do not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It is understood that in various embodiments of the present application, the size of the sequence number of each process does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present application.

[0092] It can be understood that some optional features in the embodiments of the present application may be implemented independently in certain scenarios without relying on other features, such as the solution on which they are currently based, to solve corresponding technical problems and achieve corresponding effects, or may be combined with other features according to needs in certain scenarios. Accordingly, the devices provided in the embodiments of the present application may also realize these features or functions accordingly, which will not be elaborated here.

[0093] In this application, unless otherwise specified, the same or similar parts between the various embodiments can refer to each other. In this application, if there is no special description or logical conflict between the various embodiments, the terms and / or descriptions between different embodiments are consistent and can be referenced to each other, and different embodiments can be combined to form new embodiments according to their inherent logical relationships. The following description of the implementation methods of this application does not constitute a limitation on the scope of protection of this application.

[0094] The technical solution provided in the present application can be used in various communication systems, and the communication system can be a third generation partnership project (3GPP) communication system, for example, a fourth generation (4G) long term evolution (LTE) system, a fifth generation (5G) new radio (NR) system, a vehicle to everything (V2X) system, a system of LTE and NR hybrid networking, or a device to device (D2D) system, a machine to machine (M2M) communication system, the Internet of Things (IoT), a non-terrestrial network (NTN), and other next generation communication systems. Alternatively, the communication system may also be a non-3GPP communication system without limitation.

[0095] Among them, the above-mentioned communication system applicable to the present application is only an example, and the communication system applicable to the present application is not limited to this. It is uniformly explained here and will not be repeated below.

[0096] See also Figure 1 , is an exemplary communication system provided by the present application. The communication system includes at least one network device (such as Figure 1 110a and 110b) and at least one terminal (such as Figure 1 120a-120j in FIG.

[0097] Optionally, terminals and terminals, terminals and network devices, and network devices and network devices can communicate with each other in a wired or wireless manner. Figure 1 This is just a schematic diagram. The communication system may also include other devices, such as wireless relay equipment, wireless backhaul equipment, core network equipment, etc. Figure 1 Not drawn in. Figure 1 The number of network devices and terminals in the figure is only an example, and the communication system may include more than Figure 1 More or fewer network devices or terminals are shown.

[0098] Optionally, the terminal in the communication system may support receiving the multicast service in a non-connected state. Alternatively, the terminal may not support receiving the multicast service in a non-connected state, in which case the terminal needs to receive the multicast service in a connected state.

[0099] Exemplarily, in a connected state, the user plane bearer between the terminal and the network device is available (or not suspended), and the user plane bearer corresponding to the terminal between the network device and the core network is available (or not suspended). In a non-connected state, the user plane bearer between the terminal and the network device is suspended (or unavailable), but the user plane bearer corresponding to the terminal between the network device and the core network is available (or not suspended); or, in a non-connected state, the terminal device is not connected to the network or does not perform random access.

[0100] Exemplarily, the connected state may be a radio resource control (RRC) connected (RRC_CONNECTED) state, and the unconnected state may be an RRC inactive (RRC_INACTIVE) state or an RRC idle (RRC_IDLE) state.

[0101] Optionally, the terminal may refer to a user-side device with wireless transceiver functions. The terminal may also be referred to as user equipment (UE), terminal equipment, access terminal, user unit, user station, mobile station (MS), remote station, remote terminal, mobile terminal (MT), user terminal, wireless communication equipment, user agent or user device, etc. The terminal may be, for example, a terminal in IoT, V2X, D2D, M2M, 5G network, or a future evolved public land mobile network (PLMN). The terminal may be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; it may also be deployed on the water (such as ships, etc.); it may also be deployed in the air (such as airplanes, balloons and satellites, etc.).

[0102] Exemplarily, the terminal may be a drone, an IoT device (e.g., a sensor, an electric meter, a water meter, etc.), a V2X device, a station (ST) in a wireless local area network (WLAN), a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA) device, a handheld device with a wireless communication function, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device (also referred to as a wearable smart device), a tablet computer or a computer with a wireless transceiver function, a virtual reality (VR) terminal, a wireless terminal in industrial control, a wireless terminal in self driving, a wireless terminal in remote medical, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a smart home, or a wireless terminal in a smart city. The terminal may be a wireless terminal in a home, a vehicle-mounted terminal, a vehicle with vehicle-to-vehicle (V2V) communication capability, an intelligent connected vehicle, a drone with unmanned aerial vehicle (UAV) to unmanned aerial vehicle (UAV to UAV, U2U) communication capability, etc. The terminal may be mobile or fixed, and this application does not make specific restrictions on this.

[0103] Optionally, the network device is a device that accesses the terminal to a wireless network, and may be an evolutionary base station (eNB or eNodeB) in an LTE or evolved LTE system (LTE-Advanced, LTE-A), such as a traditional macro base station eNB and a micro base station eNB in ​​a heterogeneous network scenario; or it may be a next generation node B (gNodeB or gNB) in a 5G system; or it may be a transmission reception point (TRP); or it may be a base station in a future evolved PLMN; or it may be a broadband network service gateway (BNG), an aggregation switch or a non-3GPP access device; or it may be a wireless controller in a cloud radio access network (CRAN); or it may be an access point (AP) in a WiFi system; or it may be a wireless relay node or a wireless backhaul node; or it may be a device that implements base station functions in IoT, V2X, D2D, or M2M, and the embodiments of the present application do not specifically limit this. Exemplarily, the base stations in the embodiments of the present application may include various forms of base stations, such as: macro base stations, micro base stations (also called small stations), relay stations, access points, etc., and the embodiments of the present application do not specifically limit this.

[0104] In some possible scenarios, the network device may also be a module or unit that can implement some or all of the functions of a base station. For example, the network device may be a centralized unit (CU), a distributed unit (DU), a CU and a DU, a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU). The CU and the DU may be separately configured or may be included in the same network element, such as a baseband unit (BBU). The RU may be included in a radio frequency device or a radio frequency unit, such as a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH).

[0105] In different systems, CU (or CU-CP and CU-UP), DU or RU may also have different names, but those skilled in the art can understand their meanings. For example, the network device may be a network device or a module of a network device in an open radio access network (open RAN, ORAN) system. In the ORAN system, CU may also be referred to as open (open, O)-CU, DU may also be referred to as O-DU, CU-CP may also be referred to as O-CU-CP, CU-UP may also be referred to as O-CU-UP, and RU may also be referred to as O-RU. Any of the CU (or CU-CP, CU-UP), DU and RU in this application may be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0106] It should be noted that the communication system described in the embodiment of the present application is for the purpose of more clearly illustrating the technical solution of the embodiment of the present application, and does not constitute a limitation on the technical solution provided in the embodiment of the present application. A person of ordinary skill in the art can know that with the evolution of network architecture and the emergence of new business scenarios, the technical solution provided in the embodiment of the present application is also applicable to similar technical problems.

[0107] Optionally, the relevant functions of the terminal or network device involved in this application can be Figure 2 The communication device 200 is used to implement the communication device 200. Figure 2 A schematic diagram of the composition of a communication device 200 provided in the present application, wherein the communication device 200 may be a terminal or a chip or a system on chip in a terminal; or, it may be a network device or a module or a chip or a system on chip in a network device.

[0108] like Figure 2 As shown, the communication device 200 includes at least one processor 201 and at least one communication interface ( Figure 2 The communication device 200 is merely exemplary and is described by taking a communication interface 204 and a processor 201 as an example. Optionally, the communication device 200 may further include a communication bus 202 and a memory 203.

[0109] The processor 201 may be a general-purpose central processing unit (CPU), a general-purpose processor, a network processor (NP), a digital signal processor (DSP), a microprocessor, a microcontroller, a programmable logic device (PLD), or any combination thereof. The processor 201 may also be other devices with processing functions, such as circuits, devices, or software modules, without limitation.

[0110] The communication bus 202 is used to connect different components in the communication device 200 so that the different components can communicate. The communication bus 202 can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 2 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0111] The communication interface 204 is used to communicate with other devices or communication networks. Exemplarily, the communication interface 204 can be a module, a circuit, a transceiver, or any device capable of implementing communication. Optionally, the communication interface 204 can also be an input / output interface located in the processor 201 to implement signal input and signal output of the processor.

[0112] The memory 203 may be a device with a storage function, used to store instructions and / or data, wherein the instructions may be computer programs.

[0113] Exemplarily, the memory 203 may be a read-only memory (ROM) or other types of static storage devices that can store static information and / or instructions, or a random access memory (RAM) or other types of dynamic storage devices that can store information and / or instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, etc., without limitation.

[0114] It should be noted that the memory 203 can exist independently of the processor 201, or can be integrated with the processor 201. The memory 203 can be located inside the communication device 200, or can be located outside the communication device 200, without limitation. The processor 201 can be used to execute instructions stored in the memory 203 to implement the method provided in the following embodiments of the present application.

[0115] As an optional implementation, the communication device 200 may further include an output device 205 and an input device 206. The output device 205 communicates with the processor 201 and may display information in a variety of ways. For example, the output device 205 may be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector. The input device 206 communicates with the processor 201 and may receive user input in a variety of ways. For example, the input device 206 may be a mouse, a keyboard, a touch screen device, or a sensor device.

[0116] It should be noted that Figure 2 The structure shown does not constitute a specific limitation on the network device or terminal. For example, in other embodiments of the present application, the network device or terminal may include more or fewer components than shown in the figure, or combine some components, or split some components, or arrange the components differently. The components shown in the figure may be implemented in hardware, software, or a combination of software and hardware.

[0117] In order to facilitate understanding of the technical solutions of the embodiments of the present application, a brief introduction to the related technologies of the present application is first given as follows.

[0118] 1. Multicast and broadcast service (MBS):

[0119] Multicast and broadcast service (MBS) is a service for multiple terminals. From the perspective of end-to-end management and control process, MBS services can be divided into multicast services and broadcast services. Common MBS services include live broadcast services, public safety services, batch software update services, etc. Figure 3 As shown, the transmission path of the MBS service may be: data server (or MBS server) → core network equipment → base station → multiple terminals.

[0120] When the core network device sends MBS services to the base station, the service data is transmitted through an MBS session, and the MBS session includes at least one MBS quality of service (QoS) flow. When the base station sends MBS services to the terminal, the service data is transmitted through an MBS radio bearer (MRB). For an MRB, point to multi-point (PTM) or point to point (PTP) transmission mode can be adopted.

[0121] The QoS requirements of multicast services are usually higher, and can reach the same QoS level as unicast services. Generally, group management and other operations can be performed on multicast services. Exemplarily, the core network device can manage the terminal to join or exit the multicast service group, and the base station and the core network device can maintain the information of the terminal in the multicast service group.

[0122] like Figure 4 As shown, between the core network device and the base station, the multicast service is transmitted through the MBS session, and the MBS session includes the MBS QoS flow (or multicast QoS flow). The MBS session can be associated with the protocol data unit (PDU) session of the terminal, and the MBS QoS flow is associated with the unicast QoS flow in the PDU session.

[0123] When the base station sends multicast services to the terminal, it can use the PTM or PTP transmission mode. In the PTM mode, the multicast service data can be scrambled using the group radio network temporary identifier (G-RNTI); in the PTP mode, the multicast service data is scrambled using the cell radio network temporary identifier (C-RNTI). In addition, the base station can control the transmission mode to dynamically switch between PTM and PTP.

[0124] In the 3GPP release (Rel)-17 protocol, multicast services can be provided to connected terminals, requiring base stations and core network equipment to maintain information about terminals in the multicast service group. In the 3GPP Rel-18 protocol, multicast services are supported for non-connected terminals, which can reduce network congestion, support more terminals to receive multicast services, and improve system capacity.

[0125] The term "connected terminal" may be understood as a terminal in a connected state, and the two may be interchangeable. The term "unconnected terminal" may be understood as a terminal in a unconnected state, and the two may be interchangeable.

[0126] It should be noted that the multicast service in the embodiment of the present application may also be referred to as a multicast service, and the two may be interchangeable. Alternatively, the multicast service in the embodiment of the present application may also have other names, which are not limited thereto. Alternatively, the solution provided in the embodiment of the present application may also be applied to a broadcast service.

[0127] 2. Paging:

[0128] In a mobile communication network, the network's paging of a terminal is generally divided into two categories: one is used to notify a non-connected terminal to perform random access through a paging message, so that the terminal enters a connected state for subsequent data communication; the other is used to notify the terminal to receive system information through a short message. The embodiment of the present application is mainly described by taking the first type of paging as an example.

[0129] like Figure 5 As shown, conventional paging for unicast can be triggered by a core network element, for example, an access and mobility management function (AMF) network element can initiate paging to a base station so that the base station sends a paging message. Alternatively, it can be triggered by a radio access network (RAN), for example, base station 1 can initiate RAN paging to base station 2 via an Xn interface so that base station 2 sends a paging message.

[0130] For unicast, the paging message sent by the base station through the air interface may include the identifier (ID) of the terminal being paged by the network, such as the terminal's 5G system temporary mobile subscriber identity (5G-S-TMSI) or inactive radio network temporary identity (RNTI), i.e., I-RNTI. For the terminal, the terminal identifier in the paging message can be identified, and random access can be performed when the paging message includes its own identifier.

[0131] After the introduction of multicast services, the group paging mechanism was introduced accordingly. Figure 6As shown, group paging is similar to traditional unicast paging and can be triggered by a core network element. For example, an AMF network element can initiate multicast group paging to a base station, including a temporary multicast group identifier (TMGI) so that the base station can send a paging message. Alternatively, it can be triggered by RAN. For example, base station 1 can initiate RAN multicast group paging to base station 2 via an Xn interface, including a TMGI for base station 2 to send a paging message.

[0132] For multicast, the paging message sent by the base station through the air interface may include the TMGI to indicate that the network will send the multicast service corresponding to the TMGI. The terminal interested in the multicast service can identify the TMGI in the paging message to receive the multicast service.

[0133] Optionally, the paging message may include the identifier of the terminal for network paging in a unicast scenario, and / or the TMGI in a multicast scenario. That is, the network may include both the terminal identifier for unicast paging and the TMGI for group paging in the same paging message. Alternatively, the same message includes one of the terminal identifier for unicast paging or the TMGI for group paging. Exemplarily, the partial information element included in the paging message may be as follows:

[0134]

[0135]

[0136] #The terminal identifier can be 5G-S-TMSI or I-RNTI. When the core network element triggers paging, the terminal identifier can be 5G-S-TMSI, and when the RAN triggers paging, the terminal identifier can be I-RNTI.

[0137] Regardless of unicast or multicast, the terminal can monitor the paging occasion (PO) to receive the physical downlink control channel (PDCCH) scrambled by the paging radio network temporary identifier (P-RNTI), and receive the paging message carried in the physical downlink shared channel (PDSCH) according to the paging downlink control information (DCI) in the PDCCH.

[0138] In the embodiment of the present application, the terminal monitors PO, which can also be understood as the terminal monitors PDCCH in PO, and the two can be replaced with each other. Among them, PDCCH is scrambled by P-RNTI, PDCCH carries paging DCI, paging DCI can carry scheduling information of PDSCH, and the PDSCH carries paging message.

[0139] 3. Wake up signal (WUS):

[0140] Typically, a terminal monitors a PO in each discontinuous reception (DRX) cycle to determine whether the terminal is paged. However, the network may not page a terminal in each PO, that is, the terminal monitors the PO but does not receive the corresponding paging in the PO, thereby wasting power consumption of the terminal.

[0141] In order to reduce the power consumption of the terminal, 3GPP Rel-15 introduced WUS. The network device can send WUS before PO to indicate whether the next PO includes the terminal's paging message, or whether the terminal will be paged in the next PO. If the terminal detects WUS, it means that the terminal will be paged in the next PO, and the terminal needs to monitor the next PO. If the terminal does not detect WUS, it means that the next PO does not include the terminal's paging message, and the terminal does not need to monitor the next PO and continues to sleep, thereby achieving the purpose of energy saving.

[0142] For example, Figure 7 As shown, assuming that the terminal detects WUS before the first PO, the terminal monitors the first PO. If the terminal does not detect WUS before the second and third POs, the terminal does not monitor the second and third POs.

[0143] 4. Group wake-up signal (group WUS):

[0144] Based on the WUS mechanism, the terminal can determine whether to monitor the next PO according to the WUS. However, one PO may correspond to multiple terminals, that is, there may be multiple terminals monitoring the same WUS and PO. In addition, after the terminal is awakened by the WUS, it can only confirm whether the paging message is related to itself after monitoring the PO and receiving the paging message. Therefore, there is a large probability of false alarm. Exemplarily, terminal 1 and terminal 2 correspond to the same PO. When the network pages terminal 1 but not terminal 2, since terminal 1 and terminal 2 monitor the same WUS and PO, terminal 2 will also monitor the PO when detecting the WUS, and further receive the paging message. However, only after receiving the paging message can terminal 2 confirm that the network has not paged terminal 2. At this time, WUS causes a false alarm to terminal 2.

[0145] In order to reduce the false alarm probability, 3GPP Rel-16 introduces the group WUS mechanism. In this mechanism, terminals that monitor the same PO can be grouped, and terminals in different groups monitor different WUS, thereby reducing the false alarm probability. Exemplary, terminal grouping can be performed based on terminal identification and / or the probability of the terminal being paged. For example, terminals with a high probability of being paged can be divided into the same terminal group, and terminals with a low probability of being paged can be divided into the same terminal group.

[0146] For example, Figure 8 As shown, the terminals that monitor the same PO can be divided into three groups according to the terminal identification. The terminal can determine the group to which it belongs according to its own identification. The network can configure a WUS for each group, for example, WUS0 for group 0, WUS1 for group 1, and WUS2 for group 2. The terminal can monitor the corresponding WUS according to the WUS configuration of each group broadcast by the network, so as to determine whether to monitor the PO.

[0147] 5. Paging early identification (PEI):

[0148] In order to reduce the false alarm probability and the power consumption of the terminal, 3GPP Rel-17 further introduced PEI. In this mechanism, the terminals monitoring the same PO can be divided into multiple subgroups, and the network pages the terminals according to the subgroup granularity. Specifically, PEI is used to indicate the terminal subgroup to be paged by the network before PO.

[0149] For example, Fig. 9 As shown, K terminals monitoring the same PO can be divided into N subgroups. PEI may include N bits, corresponding to the N subgroups one by one, and the value of each bit may indicate whether the subgroup corresponding to the bit is paged. The terminal may determine whether to monitor the PO according to the value of the bit corresponding to the subgroup to which it belongs.

[0150] For the division of subgroups, in one possible implementation, it can be performed by the AMF network element. The AMF network element can determine the subgroup to which the terminal belongs and send the subgroup identifier to the terminal and the base station. At this time, the subgroup division depends on the implementation of the AMF network element. For example, the AMF network element can divide the subgroups according to the probability of the terminal being paged. The subgroups divided by the AMF network element can be called CN subgroups. In addition, the total number of CN subgroups can be configured by the operation administration and maintenance (OAM) system.

[0151] In another possible implementation, the subgroup to which the terminal belongs can be determined based on the terminal identifier. In this case, the subgroup can be called a UE ID subgroup. Exemplarily, the identifier of the subgroup to which the terminal belongs satisfies the following relationship:

[0152] k=[floor(UE_ID / (N*N s ))mod N sg-UEID ]+N sg-CN

[0153] Wherein, k represents the identifier of the subgroup to which the terminal belongs. floor represents rounding down. UE_ID represents the terminal identifier. N sg-UEID Indicates the total number of subgroups determined by UE ID in the cell. N indicates the number of paging frames in a DRX cycle. s Indicates the number of POs in a paging frame. N sg-CN Represents the total number of CN subgroups.

[0154] Generally speaking, the number of CN subgroups and UE ID subgroups is up to 8. The total number of these two subgroups is also up to 8, that is, CN subgroups and UE ID subgroups can exist at the same time, and the total number of the two is up to 8. That is, PEI can indicate the paging conditions corresponding to up to 8 subgroups. In addition, if a terminal is assigned a CN subgroup identifier and the base station supports CN subgroups, the CN subgroup is used; otherwise, the UE ID subgroup is used.

[0155] 6. Last used cell mechanism:

[0156] The network device can send a "lastUsedCellOnly" indication in the system information of the cell. After the terminal receives the "lastUsedCellOnly" indication, if the cell is the cell where the terminal last connected and released, the terminal monitors the PEI of the cell and determines whether to monitor PO based on the PEI. If the cell is not the cell where the terminal last connected and released, the terminal does not monitor PEI, but monitors PO according to the traditional paging mechanism. If the network device does not send a "lastUsedCellOnly" indication in the system information of the current cell, but sends the PEI configuration, the terminal that supports PEI needs to monitor PEI to determine whether to monitor PO. Among them, the PEI configuration is used to indicate the PEI configuration information of the cell.

[0157] For example, Fig.10 As shown, it is assumed that the network device broadcasts the "lastUsedCellOnly" indication in the system information of cell 1, and terminal 1 and terminal 2 are located within the coverage of cell 1. When the last connection of terminal 1 is released by cell 1 and the last connection of terminal 2 is released by cell 2, terminal 1 monitors the PEI of cell 1 and determines whether to monitor PO according to PEI, and terminal 2 does not monitor the PEI of cell 1, but monitors PO according to the traditional paging mechanism, for example, one PO in each DRX cycle.

[0158] The above WUS mechanism, group WUS mechanism, and PEI mechanism are designed for unicast services. After the introduction of multicast services, the PEI design of group paging is discussed as follows:

[0159] Solution 1: The terminal interested in multicast determines whether to monitor PO according to the existing PEI mechanism in unicast, that is, unicast and multicast use the same PEI.

[0160] Solution 2: The terminal interested in multicast ignores the indication in PEI. That is, PEI is only used for unicast paging. The terminal interested in multicast needs to monitor PO in each DRX cycle according to the traditional paging mechanism.

[0161] In addition, 3GPP is currently studying the provision of multicast services to non-connected terminals, that is, supporting non-connected terminals to receive multicast services. Providing multicast services to non-connected terminals can enable terminals in network congestion scenarios to receive multicast services as much as possible, thereby improving system capacity. Moreover, when providing multicast services to non-connected terminals through PTM, network devices only need to send one copy of data, which does not occupy too many additional time and frequency resources compared to providing multicast services only to connected terminals. In other words, providing multicast services to non-connected terminals will not bring more resource overhead while improving system capacity.

[0162] When discussing the provision of multicast services to non-connected terminals, the following design is also made for group paging:

[0163] Design 1: In order to allow non-connected terminals to receive multicast services in a non-connected state when the multicast service is activated or the multicast session is restored, new TMGI granularity indication information is introduced in the paging message to indicate that the current cell has a PTM configuration for non-connected terminals to receive multicast services.

[0164] For the design 1, the above-mentioned indication introduced in the paging message can be used in conjunction with the pagingGroupList-r17 information element in the paging message. After receiving the paging message, the terminal can determine whether to enter the connected state to receive the multicast service according to the pagingGroupList-r17 information element and the newly introduced indication, or in other words, determine whether to receive the multicast service in the connected state or the non-connected state.

[0165] Exemplarily, the terminal parses the pagingGroupList-r17 information element. When the information element includes the TMGI of the multicast service that the terminal is interested in, if the terminal supports receiving the multicast service in the non-connected state, for example, the terminal is a Rel-18 UE, then the terminal further parses the newly introduced indication, and when it indicates that the current cell has a PTM configuration for non-connected terminals to receive multicast services, the terminal receives the multicast service in the non-connected state. If the terminal does not support receiving the multicast service in the non-connected state, for example, the terminal is an R17 UE, then the terminal enters the connected state to receive the multicast service according to the logic of R17.

[0166] Design 2: In the scenario of providing multicast services to non-connected terminals, if the multicast service / session is deactivated or there is no data temporarily, the network can notify the terminal not to use the group RNTI (group RNTI, G-RNTI) to monitor the PDCCH temporarily to achieve energy saving. Alternatively, the network can indicate the deactivation of the multicast service or the temporary absence of data. Among them, G-RNTI is the G-RNTI of the multicast service that is deactivated or temporarily has no data, and the PDCCH scrambled with the G-RNTI is used to carry the scheduling information of the multicast service.

[0167] For this design 2, a deactivation / stop listening indication can be introduced in the paging message. However, the purpose of the deactivation / stop listening indication is inconsistent with the group notification in the current paging message (such as pagingGroupList-r17 and the indication introduced in the above design 1). That is, the group notification in the current paging message is used to instruct the terminal to receive multicast services, but the deactivation / stop listening indication is used to instruct the terminal to stop using the G-RNTI to monitor the PDCCH, that is, to instruct the terminal to stop receiving multicast services. Therefore, the deactivation / stop listening indication cannot be based on the existing pagingGroupList-r17 design, but introduces a dedicated pagingGroupList (denoted as pagingGroupList-r18). Based on this design, after receiving the paging message, the Rel-17 terminal will not recognize pagingGroupList-r18 because the paging message does not include pagingGroupList-r17, and thus will not enter the connected state.

[0168] At present, when introducing the scenario of providing multicast services to non-connected terminals, only the design of paging messages is discussed. However, the receiving mechanism of paging messages in this scenario has not been clarified, for example, whether the terminal needs to determine whether to monitor PO based on PEI in this scenario, how to design PEI, etc. It is not clear. If the solution 2 in the PEI design for group paging is used, that is, the terminals interested in multicast services ignore PEI and always monitor PO, it will bring about high power consumption, which is not conducive to terminal energy saving.

[0169] Based on this, the present application provides a communication method, in which a network device can send indication information indicating whether a paging message includes at least one notification related to a multicast service. A terminal can determine whether to monitor a PO based on the indication information. The scheme will be described in detail in subsequent embodiments and will not be described in detail here.

[0170] That is to say, the present application has clearly designed a receiving mechanism for paging messages, so that the terminal can determine whether to monitor PO according to the indication information of the network device. In addition, when the terminal determines not to monitor PO, the power consumption of the terminal can be reduced.

[0171] The following will be combined with the accompanying drawings to Figure 1 Taking the interaction between the network device and the terminal shown as an example, the communication method provided in the embodiment of the present application is described in detail.

[0172] It is understandable that in the embodiment of the present application, the network device or terminal can perform some or all of the steps in the embodiment of the present application, and these steps or operations are only examples. The embodiment of the present application can also perform other operations or variations of various operations. In addition, each step can be performed in a different order presented in the embodiment of the present application, and it is possible not to perform all the operations in the embodiment of the present application.

[0173] It should be noted that the message names between the devices or the names of the parameters in the messages in the following embodiments of the present application are only examples, and other names may be used in the specific implementation, and the embodiments of the present application do not specifically limit this.

[0174] like Fig.11 FIG. 1 is a flow chart of a communication method provided in an embodiment of the present application, and the communication method includes the following steps S1101-S1103:

[0175] S1101. The network device determines instruction information.

[0176] The indication information is used by the terminal to determine whether to monitor the PO. The indication information indicates at least one of the following: whether the paging message includes the first information, whether the paging message includes the second information, or whether the paging message includes the third information. The first information indicates a multicast service. The second information indicates whether the current cell provides a multicast service to a non-connected terminal. The third information indicates not to receive a multicast service.

[0177] Optionally, the multicast service indicated by the first information may refer to a multicast service to be sent by the network, or a multicast service to be activated by the network. For ease of description, the following embodiments of the present application refer to the multicast service indicated by the first information as a first multicast service, which may include one or more multicast services.

[0178] Optionally, the first multicast service may include a multicast service provided by the current network device in the current cell, and / or a multicast service provided by other network devices in a tracking area (TA) or a RAN-based notification area (RNA) where the current network device is located.

[0179] Optionally, the first information may be carried in the paging message by a first information element. Exemplarily, the first information element may be pagingGroupList-r17. The first information element may include at least one TMGI corresponding to at least one multicast service. Of course, the first information element may also be other information elements, which is not specifically limited in the present application.

[0180] Optionally, the second information indicates whether the current cell provides multicast services to non-connected terminals, which can also be understood as: the second information indicates whether the current cell supports or is providing multicast services to non-connected terminals, or indicates whether the current cell has a configuration for non-connected terminals to receive multicast services (such as PTM configuration), or indicates whether the terminal enters a connected state to receive multicast services in the current cell, or indicates whether the current cell allows the terminal to receive multicast services in a non-connected state, or indicates that the multicast service is activated.

[0181] Optionally, the above description is made by taking the second information indicating two cases of "yes" or "no" as an example. In addition, the second information may only indicate the case of "yes". For example, the second information indicates that the current cell provides a multicast service to a non-connected terminal, or the second information indicates that the current cell has a configuration for a non-connected terminal to receive a multicast service, etc.

[0182] Optionally, in the case where the first multicast service is a multicast service provided by the current network device in the current cell, the multicast service indicated by the second information may be the first multicast service. That is, the second information indicates whether the current cell provides the first multicast service to the non-connected terminal. In other words, the first information may indicate that the network is about to send the first multicast service, and the second information may indicate whether the current cell provides the first multicast service to the non-connected terminal.

[0183] Optionally, the network device may carry the second information in the paging message when the first multicast service is activated or the multicast session of the first multicast service is restored. At this time, the second information indicates whether the current cell provides multicast services to non-connected terminals, which can also be understood as: when the multicast service is activated or the multicast session of the multicast service is restored, whether the current cell provides multicast services to non-connected terminals.

[0184] Optionally, the second information can be carried in the paging message through a second information element. Exemplarily, the second information element can be called pagingGroupList-v18. The second information element may include at least one enumeration value, which corresponds one-to-one to at least one TMGI in the first information element. The enumeration value may indicate whether the current cell provides the multicast service identified by the TMGI corresponding to the enumeration value to non-connected terminals. Each enumeration value included in the second information element may be carried in inactiveMulticastAllowed-r18, that is, the second information element may include at least one inactiveMulticastAllowed-r18 information element, and each inactiveMulticastAllowed-r18 information element is used to carry an enumeration value. Of course, the second information element may also have other names or implementations, and this application does not make specific limitations on this.

[0185] Optionally, the third information indicates that the multicast service is not received, which can also be understood as: the third information indicates deactivation of the multicast service, or indicates that there is no multicast service data temporarily, or indicates that the G-RNTI of the multicast service is not used to monitor the PDCCH. In other words, the network device can carry the third information in the paging message when it is necessary to deactivate the multicast service or there is no multicast service data temporarily.

[0186] For the convenience of description, the following embodiments of the present application refer to the multicast services not received indicated by the third information as second multicast services, and the second multicast services may include one or more multicast services. The first multicast service and the second multicast service may include completely different multicast services, or some of the services included in the first multicast service and the second multicast service may be the same, which is not specifically limited in the present application.

[0187] Optionally, the second multicast service may be a multicast service provided by the current network device to the non-connected terminal in the current cell, or may be a multicast service supported by the current network device to be provided to the non-connected terminal in the current cell.

[0188] Optionally, the third information may be carried in the paging message through a third information element. Exemplarily, the third information element may be called pagingGroupList-R18. The third information element may include at least one TMGI, corresponding to at least one multicast service, and identifying at least one multicast service that is not received. Of course, the third information element may also have other names, which are not specifically limited in this application.

[0189] S1102: The network device sends instruction information. Correspondingly, the terminal receives the instruction information from the network device.

[0190] Optionally, the terminal in the embodiment of the present application may refer to a terminal interested in multicast, or a terminal expecting to receive a multicast service, or a terminal joining a multicast service, etc.

[0191] Optionally, the indication information may be carried in the DCI. Exemplarily, the DCI carrying the indication information may be called PEI, that is, the indication information may also be considered to be carried in the PEI. The DCI carrying the indication information may also have other names, which are not specifically limited in this application. Of course, the indication information may also be carried in other information other than the DCI, such as carried in the WUS, wake-up information, etc. This application does not specifically limit the form of the indication information, the carrying location of the indication information, etc.

[0192] S1103: The terminal determines whether to monitor PO according to the indication information, wherein PO refers to the PO associated with the terminal.

[0193] Optionally, the terminal may determine whether the paging message includes the first information, the second information, or the third information according to the indication information, and thereby determine whether to monitor the PO according to whether the paging message includes the first information, the second information, or the third information.

[0194] Optionally, when the terminal determines to monitor PO, the terminal may monitor PO. When the terminal determines not to monitor PO, the terminal may continue to sleep without monitoring PO.

[0195] Optionally, the indication information may be broadcast information, and the indication information may be received by one or more terminals in the current cell. The terminals that receive the indication information may determine whether to monitor the PO according to the indication information. That is, the terminals that receive the indication information may execute the communication method provided in the embodiment of the present application. The terminal in the embodiment of the present application may be any terminal that receives the indication information.

[0196] Based on this solution, the network device can indicate through indication information whether the paging message includes: first information for indicating a multicast service, second information for indicating whether the current cell provides a multicast service to a non-connected terminal, and third information for indicating that the multicast service is not received, so that the terminal can clearly understand the multicast service-related information included in the paging message, and then determine whether to monitor PO. When the terminal determines not to monitor PO, compared with the terminal always monitoring PO, the power consumption of the terminal can be reduced, which is beneficial to terminal energy saving.

[0197] The above describes the overall process of the communication method provided by the embodiment of the present application. The following describes the implementation of the indication information and the implementation of the terminal determining whether to monitor the PO according to the indication information.

[0198] In the first implementation scenario, the indication information may include the following seven situations:

[0199] 1) The indication information indicates whether the paging message includes the first information.

[0200] Exemplarily, the indication information may be 1-bit information. The value of the 1-bit information may indicate whether the paging message includes the first information. For example, when the value of the 1-bit is a first value, it indicates that the paging message includes the first information, and when the value of the 1-bit is a second value, it indicates that the paging message does not include the first information.

[0201] Exemplarily, the first value may be 1, and correspondingly, the second value may be 0. Alternatively, the first value may be 0, and correspondingly, the second value may be 1.

[0202] Optionally, in the case 1), the indication information can clearly indicate whether the paging message includes the first information. Whether the paging message includes the second information and whether the paging message includes the third information cannot be known through the indication information.

[0203] 2) The indication information indicates whether the paging message includes the second information.

[0204] Exemplarily, the indication information may be 1-bit information. Please refer to the relevant description in the above situation 1), which will not be repeated here.

[0205] Optionally, in this situation 2), the indication information can clearly indicate whether the paging message includes the first information. As for whether the paging message includes the second information, and whether it includes the third information, it cannot be known through the indication information. However, when the first information indicates the first multicast service, the second information indicates whether the current cell provides the first multicast service to the non-connected terminal, and the second information needs to be used in combination with the first information, when the indication information indicates that the paging message includes the second information, it can be determined that the paging message also includes the first information, and when the indication information indicates that the paging message does not include the second information, it cannot be determined whether the paging message includes the first information.

[0206] Exemplarily, the situation where the second information needs to be used in combination with the first information may include: when the first information element is pagingGroupList-r17 and the second information element is pagingGroupList-v18, the situation shown in the implementation method of the first information element and the second information element.

[0207] 3) The indication information indicates whether the paging message includes the third information.

[0208] Exemplarily, the indication information may be 1-bit information. Please refer to the relevant description in the above situation 1), which will not be repeated here.

[0209] Optionally, in the case 3), the indication information can clearly indicate whether the paging message includes the third information. Whether the paging message includes the first information and whether the paging message includes the second information cannot be known through the indication information.

[0210] 4) The indication information indicates whether the paging message includes the first information and / or the second information.

[0211] Exemplarily, the indication information may be 1-bit information. The value of the 1-bit information may indicate whether the paging message includes the first information and / or the second information.

[0212] When the value of this 1-bit is the first value, it can indicate that the paging message includes at least one of the first information and / or the second information, that is, as long as the paging message includes one of the first information and the second information, the value of this 1-bit can be set to the first value; correspondingly, when the value of this 1-bit is the second value, it can indicate that the paging message does not include the first information and the second information, that is, when the paging message does not include the first information and the second information, the value of this 1-bit is set to the second value. The first value and the second value can refer to the relevant description in the above situation 1), which will not be repeated here.

[0213] Alternatively, when the value of this 1 bit is a first value, it can indicate that the paging message includes the first information and the second information, that is, when the paging message includes the first information and the second information, the value of this 1 bit is set to the first value; correspondingly, when the value of this 1 bit is a second value, it can indicate that the paging message does not include the first information and / or the second information, that is, as long as the paging message does not include one of the first information and the second information, the value of this 1 bit can be set to the second value.

[0214] Optionally, in situation 4), it is impossible to know whether the paging message includes the third information through the indication information.

[0215] 5) The indication information indicates whether the paging message includes the first information and / or the third information.

[0216] Exemplarily, the indication information may be 1-bit information. The value of the 1-bit information may indicate whether the paging message includes the first information and / or the third information. Please refer to the relevant description in the above situation 4), which will not be repeated here.

[0217] Optionally, in the situation 5), it is impossible to know whether the paging message includes the second information through the indication information.

[0218] 6) The indication information indicates whether the paging message includes the second information and / or the third information.

[0219] Exemplarily, the indication information may be 1-bit information. The value of the 1-bit information may indicate whether the paging message includes the second information and / or the third information. Please refer to the relevant description in situation 4), which will not be repeated here.

[0220] Optionally, in situation 6), it is impossible to know whether the paging message includes the first information through the indication information.

[0221] 7) The indication information indicates whether the paging message includes at least one of the first information, the second information, or the third information.

[0222] Exemplarily, the indication information may be 1-bit information. The value of the 1-bit information may indicate whether the paging message includes at least one of the first information, the second information, or the third information. Please refer to the relevant description in the above situation 4), which will not be repeated here.

[0223] Optionally, in the first implementation scenario, in a first possible implementation, the terminal determines whether to monitor the PO according to the indication information, which may include:

[0224] The terminal determines to monitor the PO in at least one of the following cases:

[0225] a) The indication information indicates that the paging message includes the first information. Exemplarily, the implementation of the indication information corresponding to situation a) may be the above situation 1).

[0226] Optionally, since the first information may indicate a multicast service that the network is about to send or activate, the terminal may monitor the PO to receive the paging message when the indication information indicates that the paging message includes the first information. If the multicast service indicated by the first information is a multicast service that the terminal needs to receive, the multicast service is received.

[0227] b) The indication information indicates that the paging message includes the first information and / or the second information. Exemplarily, the implementation method of the indication information corresponding to situation b) may be the above situation 4).

[0228] Optionally, when the implementation method of the indication information is the above-mentioned situation 4), and as long as the paging message includes one of the first information and the second information, the value of 1 bit corresponding to the indication information can be set to the first value, the terminal determines that the paging message includes the first information and / or the second information based on the indication information, and after monitoring the PO to receive the paging message, it can further determine whether the paging message includes the first information or the second information, or includes the first information and the second information.

[0229] c) The indication information indicates that the paging message includes the first information and / or the third information. Exemplarily, the implementation method of the indication information corresponding to situation c) may be the above situation 5).

[0230] Optionally, when the implementation method of the indication information is the above-mentioned situation 5), and as long as the paging message includes one of the first information and the third information, the value of 1 bit corresponding to the indication information can be set to the first value, the terminal determines that the paging message may include the first information based on the indication information, so in order to avoid missing the reception of the first information, the terminal can listen to PO to receive the paging message.

[0231] d) The indication information indicates that the paging message includes at least one of the first information, the second information, or the third information. Exemplarily, the implementation method of the indication information corresponding to case d) may be the above case 7).

[0232] Optionally, when the implementation method of the indication information is the above-mentioned situation 7), and as long as the paging message includes one of the first information, the second information, or the third information, the value of 1 bit corresponding to the indication information can be set to the first value, the terminal determines that the paging message may include the first information based on the indication information, so in order to avoid missing the reception of the first information, the terminal can listen to PO to receive the paging message.

[0233] The terminal determines not to monitor PO in at least one of the following situations:

[0234] e) The indication information indicates that the paging message does not include the first information. Exemplarily, the implementation method of the indication information corresponding to case e) may be the above case 1).

[0235] Optionally, when the indication information indicates that the paging message does not include the first information, it means that the network temporarily has no multicast service to send or activate, so the terminal can not monitor the PO to save power consumption. In addition, since the network temporarily has no multicast service to send or activate, the terminal does not monitor the PO and does not receive the paging message, and it will not affect the terminal's multicast service.

[0236] f), the indication information indicates that the paging message does not include the first information and the second information. Exemplarily, the implementation of the indication information corresponding to situation f) may be the same as the above situation 4). Please refer to the relevant description in the above situation e), which will not be repeated here.

[0237] g) The indication information indicates that the paging message does not include the first information and the third information. Exemplarily, the implementation method of the indication information corresponding to situation g) may be the above situation 5).

[0238] Optionally, when the first information indicates the first multicast service and the second information indicates whether the current cell provides the first multicast service to the non-connected terminal, if the indication information indicates that the paging message does not include the first information, the paging message does not include the second information. The reason is that when the indication information indicates that the paging message does not include the first information, it means that the network will not send the first multicast service temporarily, so there is no need to indicate in the current paging message whether the current cell provides the first multicast service to the non-connected terminal, and the indication is currently useless to the terminal.

[0239] That is, in the case where the indication information indicates that the paging message does not include the first information and the third information, it can be implicitly indicated that the paging message does not include the first information, the second information, and the third information.

[0240] h) The indication information indicates that the paging message does not include the first information, the second information, and the third information. Exemplarily, the implementation method of the indication information corresponding to situation h) may be the above situation 7).

[0241] Optionally, when the indication information indicates that the paging message does not include the first information, the second information, and the third information, it means that the paging message may not include notification related to multicast, so the terminal may not monitor PO, thereby saving power consumption.

[0242] In a second possible implementation, the terminal determines whether to monitor PO according to the indication information, which may include: determining to monitor PO when the indication information indicates that the paging message does not include the first information, or the indication information indicates that the paging message does not include the first information and the second information.

[0243] Optionally, when the indication information indicates that the paging message does not include the first information, or indicates that the paging message does not include the first information and the second information, if the deactivation of the multicast service is indicated by the paging message, or the non-reception of the multicast service is indicated by the paging message, that is, the protocol defines the above-mentioned third information, the terminal determines to monitor PO.

[0244] The reason is that: when the indication information indicates that the paging message does not include the first information, or indicates that the paging message does not include the first information and the second information, the terminal cannot determine whether the paging message includes the third information. In the case where the paging message includes the third information, the third information may indicate that a certain multicast service is not received, that is, the network is to activate the multicast service or there is no data for the multicast service temporarily. If the terminal does not monitor the PO, the terminal may continue to monitor the PDCCH using the G-RNTI of the multicast service, but the network will not send the PDCCH encrypted with the G-RNTI, resulting in a waste of power consumption of the terminal.

[0245] That is to say, when the indication information indicates that the paging message does not include the first information, or indicates that the paging message does not include the first information and the second information, the terminal can monitor the PO to avoid missing the notification sent by the network device that the multicast service is not received, thereby avoiding monitoring the PDCCH when the network device does not send the multicast service, thereby saving terminal power consumption.

[0246] In a third possible implementation, the terminal determines whether to monitor PO based on the indication information, which may include: when the indication information indicates that the paging message does not include the first information, or the indication information indicates that the paging message does not include the first information and the second information: if the terminal is interested in the multicast service deactivation notification, determine to monitor PO; if the terminal is not interested in the multicast service deactivation notification, determine not to monitor PO.

[0247] Optionally, when the deactivation of the multicast service is indicated by a paging message, or when the non-reception of the multicast service is indicated by a paging message, that is, when the protocol defines the third information, the terminal may determine whether to monitor the PO according to the third possible implementation.

[0248] Optionally, the terminal is interested in the multicast service deactivation notification, which can also be understood as: there is a service that has not been deactivated among the multicast services that the terminal is interested in (or expects, or expects to receive). For example, the terminal is interested in multicast service 1, multicast service 2, and multicast service 3. As long as there is one service that has not been deactivated among these three services, it can be considered that the terminal is interested in the multicast service deactivation notification.

[0249] Optionally, the terminal is not interested in the multicast service deactivation notification, which can also be understood as: the multicast services that the terminal is interested in have all been deactivated. For example, if the terminal is interested in multicast service 1, multicast service 2, and multicast service 3, if these three services have all been deactivated, it can be considered that the terminal is not interested in the multicast service deactivation notification.

[0250] Optionally, when the indication information indicates that the paging message does not include the first information, or indicates that the paging message does not include the second information and the second information, the terminal cannot determine whether the paging message includes the third information. At this time, if the terminal is interested in the multicast service deactivation notification, it can monitor the PO to avoid missing the third information sent by the network device, thereby avoiding the waste of power consumption caused by missing the third information. The waste of power consumption caused by missing the third information can be understood as: missing the notification sent by the network device that the multicast service is not received, thereby monitoring the PDCCH when the network device does not send the multicast service, resulting in waste of power consumption.

[0251] If the terminal is not interested in the multicast service deactivation notification, it may not monitor the PO. If all multicast services that the terminal is interested in have been deactivated, even if the paging message carries the third information, the third information indicates the multicast services that the terminal is not interested in, so the terminal does not need to monitor the PO, saving power consumption.

[0252] Exemplarily, the terminal is interested in multicast service 1, multicast service 2, and multicast service 3. If the three services are currently all deactivated, the multicast services indicated by the third information carried in the subsequent paging message may be multicast service 4, multicast service 5, etc. Since the terminal is not interested in multicast service 4 and multicast service 5, even if the terminal does not receive the third information, the terminal will not use the G-RNTI of these two services to monitor PDCCH, so the terminal does not need to monitor PO in this scenario.

[0253] In a fourth possible implementation, the terminal determines whether to monitor the PO according to the indication information, which may include: determining to monitor the PO in at least one of the following situations:

[0254] A) The indication information indicates that the paging message includes the second information. Exemplarily, the implementation of the indication information corresponding to situation A) may be the above situation 2).

[0255] B) The indication information indicates that the paging message does not include the second information. Exemplarily, the implementation method of the indication information corresponding to case B) may be the above case 2).

[0256] C) The indication information indicates that the paging message includes the third information. Exemplarily, the implementation method of the indication information corresponding to situation C) may be the above situation 3).

[0257] D) The indication information indicates that the paging message does not include the third information. Exemplarily, the implementation method of the indication information corresponding to case C) may be the above case 3).

[0258] E) The indication information indicates that the paging message does not include the second information and the third information. Exemplarily, the implementation method of the indication information corresponding to situation E) may be the above situation 6).

[0259] F) The indication information indicates that the paging message includes the second information and / or the third information. Exemplarily, the implementation of the indication information corresponding to situation F) may be the above situation 6).

[0260] Optionally, in the above-mentioned cases A) to F), the indication information cannot indicate whether the paging message includes the first information. In the case where the paging message includes the first information, the first information may indicate a multicast service, that is, the network is about to send the multicast service or activate the session of the multicast service. At this time, if the terminal does not monitor the PO, the terminal will miss part of the data of the multicast service, thereby affecting the multicast service and reducing the user experience. Therefore, in order to avoid missing the data of the multicast service and improve the user experience, in at least one of the above-mentioned cases A) to F), the terminal can monitor the PO.

[0261] Optionally, each terminal logic involved in the above four possible implementations can be used separately or in combination with each other, and this application does not make any specific restrictions on this. The following introduces several situations of combined use.

[0262] Case 1: The implementation method of the instruction information is the above case 1), if Fig.12 As shown, situation a) in the above-mentioned first possible implementation manner can be combined with the third possible implementation manner.

[0263] For example, the indication information is 1-bit information, and when the 1-bit information is set to 1, it indicates that the paging message includes the first information, and when the 1-bit information is set to 0, it indicates that the paging message does not include the first information. Fig.12 :

[0264] When the terminal is a terminal receiving multicast services in a connected state, or in other words, when the terminal receives multicast services in a connected state, if 1-bit information is 1, that is, the indication information indicates that the paging message includes the first information, the terminal determines to monitor PO; if 1-bit information is 0, that is, the indication information indicates that the paging message does not include the first information, the terminal determines not to monitor PO.

[0265] Optionally, the terminal receiving the multicast service in the connected state may also be understood as: a terminal configured to receive the multicast service in the connected state, or a terminal allowed to receive the multicast service in the connected state, or a terminal expecting to receive the multicast service in the connected state.

[0266] When the terminal is a terminal that receives a multicast service in a non-connected state, or in other words, when the terminal receives a multicast service in a non-connected state, further discussion can be performed based on whether the protocol defines third information. Exemplarily, whether the protocol defines third information can be understood as: whether the deactivation of the multicast service is indicated by a paging message, or whether the multicast service is not received by indicating a paging message. The embodiment of the present invention is described by taking whether the protocol defines third information, which is understood as whether the deactivation of the multicast service is indicated by a paging message as an example.

[0267] Optionally, a terminal receiving a multicast service in a non-connected state may also be understood as: a terminal configured to receive a multicast service in a non-connected state, or a terminal allowed to receive a multicast service in a non-connected state, or a terminal supporting (capable of) receiving a multicast service in a non-connected state, or a terminal expecting to receive a multicast service in a non-connected state.

[0268] Optionally, when the deactivation of the multicast service is indicated by a paging message, if 1-bit information is 1, that is, the indication information indicates that the paging message includes the first information, the terminal determines to monitor PO; if the 1-bit information is 0, that is, the indication information indicates that the paging message does not include the first information, then further, if the terminal is interested in the multicast service deactivation notification, it determines to monitor PO, and if the terminal is not interested in the multicast service deactivation notification, it determines not to monitor PO.

[0269] When the deactivation of the multicast service is not indicated by a paging message, if the 1-bit information is 1, that is, the indication information indicates that the paging message includes the first information, the terminal determines to monitor PO; if the 1-bit information is 0, that is, the indication information indicates that the paging message does not include the first information, the terminal determines not to monitor PO.

[0270] It should be noted that, in the embodiments of the present application, the terminal receiving the multicast service in a connected state or a non-connected state can be understood as a state of the terminal, and the terminal can determine the state before executing the embodiments of the present application, and it is not used as a judgment condition for whether the terminal monitors the PO. In addition, the deactivation of the multicast service is indicated by or not through a paging message, which can be understood as an implementation of the protocol, and the terminal follows the protocol implementation, which is also not used as a judgment condition for whether the terminal monitors the PO. This is a unified explanation here, and the subsequent embodiments will not be repeated.

[0271] Case 2: The implementation method of the instruction information is the case of case 4) above, such as Fig.13 As shown, situation b) in the above-mentioned first possible implementation manner can be combined with the third possible implementation manner.

[0272] For example, the indication information is 1-bit information, and when the 1-bit information is set to 1, it indicates that the paging message includes the first information and / or the second information, and when the 1-bit information is set to 0, it indicates that the paging message does not include the first information and the second information. Fig.13 :

[0273] When the terminal is a terminal receiving multicast services in a connected state, if 1-bit information is 1, that is, the indication information indicates that the paging message includes the first information and / or the second information, the terminal determines to monitor PO; if 1-bit information is 0, that is, the indication information indicates that the paging message does not include the first information and the second information, the terminal determines not to monitor PO.

[0274] When the terminal is a terminal that receives multicast services in a non-connected state, further discussion can be conducted based on whether the protocol defines third information, that is, whether the deactivation of the multicast service is indicated by a paging message.

[0275] Optionally, when the deactivation of the multicast service is indicated by a paging message, if 1-bit information is 1, that is, the indication information indicates that the paging message includes the first information and / or the second information, the terminal determines to monitor PO; if the 1-bit information is 0, that is, the indication information indicates that the paging message does not include the first information and the second information, then further, if the terminal is interested in the multicast service deactivation notification, it determines to monitor PO, and if the terminal is not interested in the multicast service deactivation notification, it determines not to monitor PO.

[0276] When the deactivation of the multicast service is not indicated by a paging message, if the 1-bit information is 1, that is, the indication information indicates that the paging message includes the first information and / or the second information, the terminal determines to monitor PO; if the 1-bit information is 0, that is, the indication information indicates that the paging message does not include the first information and the second information, the terminal determines not to monitor PO.

[0277] Case 3: The implementation method of the instruction information is the case of the above case 5), such as Fig.14 As shown, situation c) in the above-mentioned first possible implementation manner can be combined with the third possible implementation manner.

[0278] Optionally, in this case three, since the indication information can indicate the carrying status of the third information in the paging message, it can be considered that case three is designed based on the assumption that the deactivation of the multicast service can be indicated by the paging message.

[0279] For example, the indication information is 1-bit information, and when the 1-bit information is set to 1, it indicates that the paging message includes the first information and / or the third information, and when it is set to 0, it indicates that the paging message does not include the first information and the third information. Fig.14 :

[0280] Regardless of whether the terminal is a terminal receiving multicast services in a connected state or a terminal receiving multicast services in a non-connected state, if 1 bit of information is 1, that is, the indication information indicates that the paging message includes the first information and / or the third information, the terminal determines to monitor PO; if 1 bit of information is 0, that is, the indication information indicates that the paging message does not include the first information and the third information, the terminal determines not to monitor PO.

[0281] Case 4: The implementation method of the instruction information is the case of the above case 7), if Fig.15 As shown, case d) and case h) in the above first possible implementation manner can be combined.

[0282] For example, the indication information is 1-bit information, and when the 1-bit information is set to 1, it indicates that the paging message includes at least one of the first information, the second information, or the third information, and when the 1-bit information is set to 0, it indicates that the paging message does not include the first information, the second information, and the third information. Fig.15 :

[0283] Regardless of whether the terminal is a terminal receiving multicast services in a connected state or a terminal receiving multicast services in a non-connected state, if 1 bit of information is 1, that is, the indication information indicates that the paging message includes at least one of the first information, the second information, or the third information, the terminal determines to monitor PO; if 1 bit of information is 0, that is, the indication information indicates that the paging message does not include the first information, the second information, and the third information, the terminal determines not to monitor PO.

[0284] Among them, the logical analysis of the terminal determining whether to monitor PO in the above situations 1 to 4 can refer to the relevant descriptions in the above-mentioned first possible implementation method to the third possible implementation method, and will not be repeated here.

[0285] It should be noted that the above-mentioned situations 1 to 4 are merely exemplary descriptions, and the various terminal logics involved in the above-mentioned four possible implementations may also exist in other combinations, and this application does not make any specific limitations on this.

[0286] It should be noted that, in the embodiments of the present application, unless otherwise specified, the terminal may refer to a terminal that receives a multicast service in a connected state, or may refer to a terminal that receives a multicast service in a non-connected state.

[0287] In the second implementation scenario, Fig.16 As shown, the indication information may include first indication information and second indication information. It should be noted that the present application does not specifically limit the order of the first indication information and the second indication information in the indication information. The first indication information may be in the front or in the back. The following embodiments are described by taking the first indication information in the front and the second indication information in the back as an example.

[0288] Optionally, the first indication information and the second indication information may be implemented in the following six ways:

[0289] Mode 1: The first indication information indicates whether the paging message includes the first information and / or the second information, and the second indication information indicates whether the paging message includes the third information.

[0290] Exemplarily, the first indication information may be 1-bit information, and the value of the 1-bit information may indicate whether the paging message includes the first information and / or the second information.

[0291] For example, when the value of this 1 bit is the first value, it can indicate that the paging message includes at least one of the first information or the second information, that is, as long as the paging message includes one of the first information and the second information, the value of this 1 bit can be set to the first value; correspondingly, when the value of this 1 bit is the second value, it can indicate that the paging message does not include the first information and the second information, that is, when the paging message does not include the first information and the second information, the value of this 1 bit is set to the second value.

[0292] Alternatively, when the value of this 1 bit is a first value, it can indicate that the paging message includes the first information and the second information, that is, when the paging message includes the first information and the second information, the value of this 1 bit is set to the first value; correspondingly, when the value of this 1 bit is a second value, it can indicate that the paging message does not include the first information and / or the second information, that is, as long as the paging message does not include one of the first information and the second information, the value of this 1 bit can be set to the second value.

[0293] Exemplarily, the second indication information may be 1-bit information, and the value of the 1-bit may indicate whether the paging message includes the third information. For example, when the value of the 1-bit is a first value, it may indicate that the paging message includes the third information, and when the value of the 1-bit is a second value, it may indicate that the paging message does not include the third information.

[0294] Optionally, in this method, since the second indication information can indicate the carrying status of the third information in the paging message, it can be considered that the method one is designed based on the assumption that the deactivation of the multicast service can be indicated by the paging message.

[0295] Optionally, in this manner, the terminal determines whether to monitor the PO according to the indication information, which may include the following three implementation methods:

[0296] Method a): When the first indication information indicates that the paging message includes the first information and / or the second information, it is determined to monitor PO.

[0297] Optionally, when the first indication information is 1-bit information, and as long as the paging message includes one of the first information and the second information, the value of the 1-bit is set to the first value, the terminal can determine that the paging message includes the first information and / or the second information based on the first indication information, and after monitoring the PO to receive the paging message, it can further determine whether the paging message includes the first information or the second information, or includes the first information and the second information.

[0298] Mode b): When the first indication information indicates that the paging message does not include the first information and the second information, and the second indication information indicates that the paging message does not include the third information, it is determined not to monitor the PO.

[0299] Mode c), when the first indication information indicates that the paging message does not include the first information and the second information, and the second indication information indicates that the paging message includes the third information, it is determined whether to monitor or not monitor the PO. Exemplarily, the terminal determines whether to monitor or not monitor the PO, which may include the following four implementation modes:

[0300] Mode 1) When the terminal is a terminal receiving multicast services in a connected state, it is determined not to monitor PO.

[0301] Optionally, if the terminal is a terminal that receives multicast services in a connected state, the network does not need to notify the terminal when deactivating the multicast service that the terminal joins. Therefore, even if the second indication information indicates that the paging message includes the third information, that is, the network device will deactivate the multicast service through the paging message, or instruct the terminal not to receive the multicast service, the terminal that receives the multicast service in a connected state does not need to monitor the PO to receive the paging message. In addition, not monitoring the PO in this scenario can save power consumption of the terminal in the connected state.

[0302] Mode 2) When the terminal is a terminal receiving a multicast service in a non-connected state, it is determined to monitor the PO.

[0303] Optionally, if the terminal is a terminal that receives a multicast service in a non-connected state, the terminal needs to learn about the multicast service deactivated by the network through a paging message to avoid missing a notification of deactivation of the multicast service, thereby causing waste of power consumption.

[0304] Mode 3) When the terminal is a terminal receiving a multicast service in a non-connected state and the terminal is not interested in a multicast service deactivation notification, it is determined not to monitor the PO.

[0305] Mode 4) When the terminal is a terminal receiving a multicast service in a non-connected state and the terminal is interested in a multicast service deactivation notification, it is determined to monitor the PO.

[0306] Among them, for the terminal receiving the multicast service in the connected state or the non-connected state, the description of whether the terminal is interested or uninterested in the multicast service deactivation notification can refer to the relevant introduction in the first implementation scenario above, which will not be repeated here. The description of method 3) and method 4) can refer to the relevant introduction in the third possible implementation in the first implementation scenario above, which will not be repeated here.

[0307] Exemplarily, when the 1-bit information corresponding to the first indication information is set to 1, it indicates that the paging message includes at least one of the first information or the second information, and when it is set to 0, it indicates that the paging message does not include the first information and the second information, and when the 1-bit information corresponding to the second indication information is set to 1, it indicates that the paging message includes the third information, and when it is set to 0, it indicates that the message does not include the third information. For example, the above-mentioned methods a) to c) can be expressed as follows Fig.17 The logic shown. Among them, regarding method c), Fig.17 Shown are method 1), method 3), and method 4) in method c).

[0308] Mode 2: The first indication information indicates whether the paging message includes the first information, and the second indication information indicates whether the paging message includes the second information and / or the third information.

[0309] Exemplarily, the first indication information may be 1-bit information, and the value of the 1-bit may indicate whether the paging message includes the first information. For example, when the value of the 1-bit is a first value, it may indicate that the paging message includes the first information, and when the value of the 1-bit is a second value, it may indicate that the paging message does not include the first information.

[0310] Exemplarily, the second indication information may be 1-bit information, and the value of the 1-bit information may indicate whether the paging message includes the second information and / or the third information.

[0311] For example, when the value of this 1 bit is the first value, it can indicate that the paging message includes at least one of the second information or the third information, that is, as long as the paging message includes one of the second information and the third information, the value of this 1 bit can be set to the first value; correspondingly, when the value of this 1 bit is the second value, it can indicate that the paging message does not include the second information and the third information, that is, when the paging message does not include the second information and the third information, the value of this 1 bit is set to the second value.

[0312] Alternatively, when the value of this 1 bit is a first value, it can indicate that the paging message includes the second information and the third information, that is, when the paging message includes the second information and the third information, the value of this 1 bit is set to the first value; correspondingly, when the value of this 1 bit is a second value, it can indicate that the paging message does not include the second information and / or the third information, that is, as long as the paging message does not include one of the second information and the third information, the value of this 1 bit can be set to the second value.

[0313] Optionally, in the second mode, since the second indication information can indicate the carrying status of the third information in the paging message, it can be considered that the second mode is designed based on the assumption that the deactivation of the multicast service can be indicated by a paging message.

[0314] Optionally, in the second mode, the terminal determines whether to monitor the PO according to the indication information, which may include the following three implementation modes:

[0315] Mode d) When the first indication information indicates that the paging message includes the first information, it is determined to monitor the PO. Please refer to the relevant description of the first possible implementation mode in the first implementation scenario above, which will not be repeated here.

[0316] Mode e), when the first indication information indicates that the paging message does not include the first information, and the second indication information indicates that the paging message does not include the second information and the third information, it is determined not to monitor PO. Please refer to the relevant description of situation h) in the first possible implementation method under the first implementation scenario above, which will not be repeated here.

[0317] Method f), when the first indication information indicates that the paging message does not include the first information, and the second indication information indicates that the paging message includes the second information and / or the third information, determine whether to monitor or not monitor PO. Exemplarily, the implementation of the terminal determining whether to monitor or not monitor PO can refer to the relevant instructions in the above method c), which will not be repeated here.

[0318] Exemplarily, when the 1-bit information corresponding to the first indication information is set to 1, it indicates that the paging message includes the first information, and when it is set to 0, it indicates that the paging message does not include the first information, and when the 1-bit information corresponding to the second indication information is set to 1, it indicates that the paging message includes at least one of the second information or the third information, and when it is set to 0, it indicates that the message does not include the second information and the third information. For example, the above-mentioned methods d) to f) can be expressed as follows Fig.18 The logic shown.

[0319] Mode three: the first indication information indicates whether the paging message includes the first information and / or the third information, and the second indication information indicates whether the paging message includes the second information.

[0320] Exemplarily, the first indication information may be 1-bit information, and the value of the 1-bit information may indicate whether the paging message includes the first information and / or the third information. For details, please refer to the description of the first indication information in the above-mentioned method 2, which will not be repeated here.

[0321] Exemplarily, the second indication information may be 1-bit information, and the value of the 1-bit may indicate whether the paging message includes the second information. For example, when the value of the 1-bit is a first value, it may indicate that the paging message includes the second information, and when the value of the 1-bit is a second value, it may indicate that the paging message does not include the second information.

[0322] Optionally, in this method three, since the second indication information can indicate the carrying status of the third information in the paging message, it can be considered that method three is designed based on the assumption that deactivation of the multicast service can be indicated by a paging message.

[0323] Optionally, in the third mode, the terminal determines whether to monitor the PO according to the indication information, which may include the following two implementation modes:

[0324] Mode g), when the first indication information indicates that the paging message includes the first information and / or the third information, the monitoring PO is determined. Please refer to the relevant description of situation c) in the first possible implementation mode under the first implementation scenario above, which will not be repeated here.

[0325] Mode h): When the first indication information indicates that the paging message does not include the first information and the third information, it is determined not to monitor the PO. Please refer to the relevant description of situation g) in the first possible implementation mode under the first implementation scenario above, which will not be repeated here.

[0326] Exemplarily, when the 1-bit information corresponding to the first indication information is set to 1, it indicates that the paging message includes at least one of the first information or the third information, and when it is set to 0, it indicates that the message does not include the first information and the third information, and when the 1-bit information corresponding to the second indication information is set to 1, it indicates that the paging message includes the second information, and when it is set to 0, it indicates that the paging message does not include the second information. For example, the above-mentioned methods g) to h) can be expressed as follows Fig.19 The logic shown.

[0327] Mode 4: The first indication information indicates whether the paging message includes the first information, and the second indication information indicates whether the paging message includes the second information.

[0328] Exemplarily, the first indication information may be 1-bit information, and the value of the 1-bit may indicate whether the paging message includes the first information. For details, please refer to the related description of the first indication information in the above-mentioned method 2, which will not be described in detail here.

[0329] Exemplarily, the second indication information may be 1-bit information, and the value of the 1-bit may indicate whether the paging message includes the second information. For details, please refer to the relevant description of the second indication information in the above-mentioned method 3, which will not be described in detail here.

[0330] Optionally, in this fourth mode, since the first indication information and the second indication information do not indicate the carrying status of the third information in the paging message, it can be considered that the deactivation of the multicast service may be indicated by the paging message or may not be indicated by the paging message.

[0331] Optionally, in this fourth mode, the terminal determines whether to monitor the PO according to the indication information, which may include the following two implementation modes:

[0332] Mode i): When the first indication information indicates that the paging message includes the first information, it is determined to monitor the PO. Please refer to the relevant description of situation a) in the first possible implementation mode under the first implementation scenario above, which will not be repeated here.

[0333] Mode j), when the first indication information indicates that the paging message does not include the first information, and the second indication information indicates that the paging message does not include the second information, determine whether to monitor or not monitor the PO. Exemplarily, the terminal determines whether to monitor or not monitor the PO, which may include the following five implementation modes:

[0334] Mode 4): When the terminal is a terminal receiving multicast services in a connected state, it is determined not to monitor PO. Please refer to the relevant description of the above mode 1), which will not be repeated here.

[0335] Mode 5) When the terminal is a terminal receiving a multicast service in a non-connected state, and the deactivation of the multicast service is not indicated by a paging message, it is determined not to monitor the PO.

[0336] Optionally, when the first indication information indicates that the paging message does not include the first information, and the second indication information indicates that the paging message does not include the second information, if the deactivation of the multicast service is not indicated by the paging message, the paging message may not include relevant notifications of the multicast service, so that the terminal receiving the multicast service in a non-connected state may not listen to the PO and thus not receive the paging message, so as to save power consumption.

[0337] Mode 6) When the terminal is a terminal receiving multicast services in a non-connected state, when the deactivation of the multicast service is indicated by a paging message, the monitoring PO is determined. Please refer to the relevant description of the second possible implementation mode under the first implementation scenario above, which will not be repeated here.

[0338] Mode 7) When the terminal is a terminal receiving a multicast service in a non-connected state, the deactivation of the multicast service is indicated by a paging message, and the terminal is not interested in the multicast service deactivation notification, it is determined not to monitor the PO.

[0339] Mode 8) When the terminal is a terminal receiving multicast services in a non-connected state, the deactivation of the multicast service is indicated by a paging message, and the terminal is interested in the multicast service deactivation notification, it is determined to monitor the PO. The description of Mode 7) and Mode 8) can refer to the relevant introduction in the third possible implementation under the first implementation scenario above, which will not be repeated here.

[0340] Exemplarily, taking the case where the 1-bit information corresponding to the first indication information is set to 1 to indicate that the paging message includes the first information, and is set to 0 to indicate that the paging message does not include the first information, and the 1-bit information corresponding to the second indication information is set to 1 to indicate that the paging message includes the second information, and is set to 0 to indicate that the message does not include the second information as an example, the above-mentioned methods i) to j) can be expressed as follows Fig. 20 The logic shown.

[0341] Mode 5: The first indication information indicates whether the paging message includes the first information, and the second indication information indicates whether the paging message includes the third information.

[0342] Exemplarily, the first indication information may be 1-bit information, and the value of the 1-bit information may indicate whether the paging message includes the first information. For details, please refer to the related description of the first indication information in the above-mentioned method 2, which will not be described in detail here.

[0343] Exemplarily, the second indication information may be 1-bit information, and the value of the 1-bit may indicate whether the paging message includes the third information. For details, please refer to the relevant description of the second indication information in the above-mentioned method 1, which will not be repeated here.

[0344] Optionally, in this mode five, since the second indication information can indicate the carrying status of the third information in the paging message, it can be considered that mode five is designed based on the assumption that the deactivation of the multicast service can be indicated by a paging message.

[0345] Optionally, in this fifth mode, the terminal determines whether to monitor the PO according to the indication information, which may include the following three implementation modes:

[0346] Mode k): When the first indication information indicates that the paging message includes the first information, it is determined to monitor PO. Please refer to the relevant description of situation a) in the first possible implementation mode under the first implementation scenario above, which will not be repeated here.

[0347] Mode 1), when the first indication information indicates that the paging message does not include the first information, and the second indication information indicates that the paging message does not include the third information, it is determined not to monitor PO. Please refer to the relevant description of situation g) in the first possible implementation mode under the first implementation scenario above, which will not be repeated here.

[0348] Method m): When the first indication information indicates that the paging message does not include the first information, and the second indication information indicates that the paging message includes the third information, determine whether to monitor or not monitor PO. Exemplarily, the implementation of the terminal determining whether to monitor or not monitor PO can refer to the relevant instructions in the above method c), which will not be repeated here.

[0349] Exemplarily, when the 1-bit information corresponding to the first indication information is set to 1, it indicates that the paging message includes the first information, and when it is set to 0, it indicates that the paging message does not include the first information, and when the 1-bit information corresponding to the second indication information is set to 1, it indicates that the paging message includes the third information, and when it is set to 0, it indicates that the message does not include the third information. For example, the above-mentioned methods k) to m) can be expressed as follows Fig.21 The logic shown in (a) in .

[0350] Mode six: the first indication information indicates whether the paging message includes the second information, and the second indication information indicates whether the paging message includes the third information.

[0351] Exemplarily, the first indication information may be 1-bit information, and the value of the 1-bit information may indicate whether the paging message includes the second information.

[0352] Exemplarily, the second indication information may be 1-bit information, and the value of the 1-bit may indicate whether the paging message includes the third information. For details, please refer to the relevant description of the second indication information in the above-mentioned method 1, which will not be repeated here.

[0353] Optionally, in mode six, since the second indication information can indicate the carrying status of the third information in the paging message, it can be considered that mode six is ​​designed based on the assumption that deactivation of the multicast service can be indicated by a paging message.

[0354] Optionally, in this sixth mode, the terminal determines whether to monitor the PO according to the indication information, which may include determining to monitor the PO in at least one of the following situations:

[0355] The first indication information indicates that the paging message includes the second information, the first indication information indicates that the paging message does not include the second information, the second indication information indicates that the paging message includes the third information, or the second indication information indicates that the paging message does not include the third information.

[0356] That is, no matter whether the first indication information indicates that the paging message includes the second information, and / or whether the second indication information indicates that the paging message includes the third information, the terminal monitors the PO. Please refer to the relevant description of the fourth possible implementation method under the first implementation scenario above, which will not be repeated here.

[0357] Exemplarily, when the 1-bit information corresponding to the first indication information is set to 1, it indicates that the paging message includes the second information, and when it is set to 0, it indicates that the paging message does not include the second information, and when the 1-bit information corresponding to the second indication information is set to 1, it indicates that the paging message includes the third information, and when it is set to 0, it indicates that the message does not include the third information. For example, the behavior of the terminal in the above-mentioned method 6 can be expressed as follows Fig. 22 The logic shown.

[0358] Optionally, in the above six implementation methods, when the first indication information and the second indication information are both 1-bit information, the first indication information and the second indication information can be jointly indicated. For example, the terminal can know in advance the various values ​​of the 2-bit information corresponding to the first indication information and the second indication information and the actions corresponding to each value (i.e., listening or not listening to PO), so that after receiving the indication information, it determines whether to listen to PO or not according to the values ​​of the 2-bit information corresponding to the first indication information and the second indication information in the indication information.

[0359] Alternatively, the first indication information and the second indication information may be independently indicated. For example, after receiving the indication information, the terminal first determines the value of the 1 bit corresponding to the first indication information, and determines whether the second indication information is still needed based on the value of the 1 bit. If the second indication information is needed, it determines whether to monitor the PO based on the value of the 1 bit corresponding to the second indication information.

[0360] Exemplarily, taking the case where the first indication information indicates whether the paging message includes the first information, and the second indication information indicates whether the paging message includes the third information, Fig.21 The logic shown in (a) in FIG. 1 can be considered that the first indication information and the second indication information are jointly indicated. In the case where the first indication information and the second indication information are independently indicated, such as Fig.21 As shown in (b), still taking the case where the 1-bit information corresponding to the first indication information is set to 1 to indicate that the paging message includes the first information, and is set to 0 to indicate that the paging message does not include the first information, and the 1-bit information corresponding to the second indication information is set to 1 to indicate that the paging message includes the third information, and is set to 0 to indicate that the message does not include the third information as an example, the terminal can first determine the value of the 1-bit corresponding to the first indication information, and determine to monitor PO when the value of the 1-bit is 1, that is, the first indication information indicates that the paging message includes the first information. At this time, there is no need to make a judgment based on the second indication information.

[0361] When the value of the 1 bit corresponding to the first indication information is 0, that is, the first indication information indicates that the paging message does not include the first information, the terminal determines whether to monitor the PO according to the value of the 1 bit corresponding to the second indication information.

[0362] Optionally, in the above embodiment, the content indicated by the indication information may also be referred to as a group paging indication. Before the above step S1101, the terminal may send capability information to the network device, and the capability information may indicate whether the terminal supports group paging indication, or indicates whether the terminal supports receiving group paging indication, or indicates whether the terminal supports determining whether the paging message includes a multicast service-related notification through the group paging indication, and the multicast service-related notification may include at least one of the first information, the second information, or the third information. After the network device receives the capability information of the terminal, if the capability information indicates that the terminal supports the group paging indication, step S1101 is executed.

[0363] Optionally, when the terminal supports group paging indication, the capability information may indicate the type of group paging indication supported by the terminal. In the first implementation scenario, the type of group paging indication may correspond one-to-one to the seven implementation methods of the indication information. For example, when the indication information indicates whether the paging message includes the first information, the type of group paging indication may be the first type, indicating that the terminal supports the network device indicating whether the paging message includes the first information.

[0364] In the above-mentioned second implementation scenario, the type of group paging indication can correspond one-to-one to the six implementation methods of the above-mentioned first indication information and second indication information. For example, when the first indication information indicates whether the paging message includes the first information and / or the second information, and the second indication information indicates whether the paging message includes the third information, the type of group paging indication can be the first type, indicating that the terminal supports the network device to indicate whether the paging message includes the first information and / or the second information through the first indication information, and supports the network device to indicate whether the paging message includes the third information through the second indication information.

[0365] Optionally, there may be an association relationship between the above indication information and PO, and one indication information may be associated with one or more POs. The PO associated with the indication information may be understood as: the PO that the terminal determines whether to monitor based on the indication information. In the above step S1103, it can be considered that the terminal determines whether to monitor one or more POs associated with the indication information based on the indication information. In the case where one indication information is associated with multiple POs, the terminal determines whether to monitor the multiple POs or not based on the indication information. That is, the terminal either monitors all of the multiple POs or does not monitor all of the multiple POs.

[0366] When one indication information is associated with one PO, the network device can send multiple indication information associated with multiple POs in the same signaling or the same message. For example, the network device can carry multiple indication information in the same PEI. After receiving the PEI, the terminal determines whether to monitor the POs associated with each indication information according to the multiple indication information carried in the PEI.

[0367] In addition to the above Fig.11 In addition to the communication method shown, the present application also provides a communication method, such as Fig.23 As shown, the communication method includes the following steps:

[0368] S2301. The network device determines instruction information.

[0369] The indication information indicates whether the paging message includes an identifier of a multicast service. The multicast service belongs to a service list (or a multicast service list). The service list includes multicast services provided by the network device, for example, all multicast services provided by the network device in the current cell; or, the service list includes multicast services joined by terminals released by the network device, for example, the union of multicast services joined by all terminals released by the network device before the current moment.

[0370] Optionally, all terminals released by the network device before the current moment may refer to: all terminals released by the network device before the current moment and for which the network device stores terminal contexts. And / or, all terminals released by the network device before the current moment may refer to: all terminals released by the network device before the current moment and in a non-connected state at the current moment.

[0371] For example, assuming that the terminals released by the network device before the current moment are terminal 1 and terminal 2, terminal 1 joins multicast service 1 and multicast service 2, and terminal 2 joins multicast service 3, then the service list includes multicast service 1, multicast service 2, and multicast service 3.

[0372] Optionally, the network device may include identifiers of multiple multicast services in the paging message sent by the current cell, for example, the identifiers of multicast services provided by other network devices in the TA or RNA where the network device is located. That is, although the network device may include identifiers of multicast services provided by other network devices in the paging message sent by the current cell, the indication information only indicates whether the paging message includes the identifier of the multicast service in the service list.

[0373] Exemplarily, taking the case where the network device provides multicast services 1-3 in the current cell, that is, the service list includes multicast services 1-3, if the network device needs to send a paging message for at least one of the multicast services 1-3 in the current cell, then the indication information may indicate that the paging message includes the identifier of at least one of the multicast services 1-3. If the network device needs to send a paging message for multicast service 4 in the current cell, then the indication information may indicate that the paging message does not include the identifier of the multicast service in the service list. Among them, multicast service 4 may be a multicast service provided by other network devices in the TA or RNA where the network device is located.

[0374] Optionally, the indication information may be 1-bit information or 2-bit information. The value of the 1-bit information or 2-bit information may indicate whether the paging message includes the identifier of the multicast service in the service list.

[0375] Optionally, in some implementations, the service list may also include multicast services provided by all network devices in the TA or RNA where the network device is located. For example, taking the case where the multicast services provided by all network devices in the TA or RNA include multicast services 1-8, if the network device needs to send a paging message for any multicast service in multicast services 1-8 in the current cell, the indication information may indicate that the paging message includes an identifier of the multicast service.

[0376] S2302: The network device sends indication information. Correspondingly, the terminal receives indication information from the network.

[0377] Optionally, the indication information may be carried in the DCI. Exemplarily, the DCI carrying the indication information may be called PEI, that is, the indication information may also be considered to be carried in the PEI. The DCI carrying the indication information may also have other names, which are not specifically limited in this application. Of course, the indication information may also be carried in other signalings other than the DCI, which are not specifically limited in this application.

[0378] Optionally, the terminal may be a terminal released by the network device, or the connection of the terminal closest to the current moment is released by the network device, that is, the current cell may be the last used cell of the terminal.

[0379] Exemplarily, the last used cell may also be referred to as the last served cell, or the last serving cell. The three may be interchangeable, and this application does not make any specific limitation on this.

[0380] Optionally, the network device can send a last used cell indication (such as lastUsedCellOnly). After the terminal receives the last used cell indication, if the terminal's last connection is released by the current cell, that is, the current cell is the last used cell of the terminal, the terminal can receive the indication information. If the terminal's last connection is not released by the current cell, that is, the current cell is not the last used cell of the terminal, the terminal does not receive or ignores the indication information. In the case that the current cell is not the last used cell of the terminal, the terminal can receive paging messages according to the traditional paging mechanism, for example, listening to the PO associated with the terminal and receiving paging messages in each DRX cycle.

[0381] Optionally, in some implementations, if the network device does not send the last used cell indication, the service list may also include multicast services provided by all network devices in the TA or RNA where the network device is located. At this time, regardless of whether the current cell is the last used cell of the terminal, the terminal may receive the indication information and execute the following step S2303.

[0382] S2303: The terminal determines whether to monitor PO according to the indication information.

[0383] Optionally, when the indication information indicates that the paging message includes the identifier of the multicast service, the terminal determines to monitor the PO; when the indication information indicates that the paging message does not include the identifier of the multicast service, the terminal determines not to monitor the PO.

[0384] Based on the scheme, the indication information indicates whether the paging message includes the identifier of the multicast service in the service list, and the service list includes the multicast service provided by the network device, or the multicast service to which the terminal released by the network device joins. That is, the indication information indicates whether the paging message includes the identifier of the multicast service provided by the network device, or whether it includes the identifier of the multicast service to which the terminal joined by the network device. In the case where the last connection of the terminal is released by the current cell, the multicast service that the terminal is interested in may be the multicast service provided by the network, or the multicast service to which the terminal joined after the network released. Therefore, the indication information indicates whether the paging message includes the identifier of the multicast service in the multicast service list, which can reduce false alarms for such terminals and is beneficial to energy saving for such terminals.

[0385] For example, if the service list includes multicast services provided by all network devices in the TA or RNA where the network device is located, then when the paging message includes the identifier of any multicast service, the indication information needs to indicate that the paging message includes the identifier of the multicast service, causing the terminal to monitor the PO according to the indication information. However, the identifier of the multicast service included in the paging message is not the identifier of the multicast service that the terminal is interested in, resulting in a waste of power consumption of the terminal.

[0386] It should be noted that the above Fig.11 and Fig.23 The methods shown can be performed independently or in combination to form new implementations. Fig.11 In the method shown, the multicast service indicated by the first information, the multicast service indicated by the second information whether the current cell provides multicast services to non-connected terminals, and the multicast service not received indicated by the third information may belong to the above service list. Further, in the case where the network device sends the last used cell indication, the multicast service corresponding to the first information, the second information, and the third information belongs to the above service list. Of course, the above Fig.11 and Fig.23The methods shown may also be combined in other ways, which are not specifically limited in this application.

[0387] It should be noted that a separate step, a separate implementation method or a separate example in the above embodiments of the present application can also be regarded as a complete embodiment.

[0388] It can be understood that in each of the above embodiments, the methods and / or steps implemented by the network device can also be implemented by components that can be used for the network device (such as a processor, chip, chip system, circuit, logic module, or software); the methods and / or steps implemented by the terminal can also be implemented by components that can be used for the terminal (such as a processor, chip, chip system, circuit, logic module, or software).

[0389] The above mainly introduces the scheme provided by the present application. Accordingly, the present application also provides a communication device, which is used to implement the above various methods. The communication device can be a network device in the above method embodiment, or a device including the above network device, or a component that can be used for the network device, such as a chip or a chip system; or, the communication device can be a terminal in the above method embodiment, or a device including the above terminal, or a component that can be used for the terminal, such as a chip or a chip system.

[0390] It is understandable that, in order to realize the above functions, the communication device includes hardware structures and / or software modules corresponding to the execution of each function. Those skilled in the art should easily realize that, in combination with the units and algorithm steps of each example described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0391] The embodiment of the present application can divide the functional modules of the communication device according to the above method embodiment. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The above integrated module can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the embodiment of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation.

[0392] Optionally, taking the communication device as the terminal in the above method embodiment as an example, Fig.24The schematic diagram of the structure of a terminal 240 is shown. The terminal 240 includes a processing module 2401 and a transceiver module 2402. The terminal 240 can implement the functions of the terminal in the above-mentioned embodiment.

[0393] In some embodiments, the terminal 240 may also include a storage module ( Fig.24 ), for storing program instructions and data.

[0394] In some embodiments, the transceiver module 2402, which may also be referred to as a transceiver unit, is used to implement the sending and / or receiving functions. The transceiver module 2402 may be composed of a transceiver circuit, a transceiver, a transceiver or a communication interface.

[0395] In some embodiments, the transceiver module 2402 may include a receiving module and a sending module, which are respectively used to execute the receiving and sending steps performed by the terminal in the above-mentioned method embodiments, and / or used to support other processes of the technology described in this document; the processing module 2401 may be used to execute the processing steps (such as determination, etc.) performed by the terminal in the above-mentioned method embodiments, and / or used to support other processes of the technology described in this document.

[0396] The transceiver module 2402 is used to receive indication information, which indicates at least one of the following: whether the paging message includes the first information, whether the paging message includes the second information, or whether the paging message includes the third information; the first information indicates the multicast service, the second information indicates whether the current cell provides the multicast service to the non-connected terminal, and the third information indicates not to receive the multicast service. The processing module 2401 is used to determine whether to monitor the paging opportunity PO according to the indication information.

[0397] Optionally, the processing module 2401 is used to determine whether to monitor PO according to the indication information, including: the processing module 2401 is used to determine to monitor PO in at least one of the following situations: the indication information indicates that the paging message includes the first information; the indication information indicates that the paging message includes the first information and / or the second information; the indication information indicates that the paging message includes the first information and / or the third information; the indication information indicates that the paging message includes at least one of the first information, the second information, or the third information. Alternatively, the processing module 2401 is used to determine not to monitor PO in at least one of the following situations: the indication information indicates that the paging message does not include the first information; the indication information indicates that the paging message does not include the first information and the second information; the indication information indicates that the paging message does not include the first information and the third information; the indication information indicates that the paging message does not include the first information, the second information, and the third information.

[0398] Optionally, the processing module 2401 is used to determine whether to monitor PO according to the indication information, including: the processing module 2401 is used to determine to monitor PO when the indication information indicates that the paging message does not include the first information, or the indication information indicates that the paging message does not include the first information and the second information.

[0399] Optionally, processing module 2401 is used to determine whether to monitor PO based on indication information, including: processing module 2401 is used to determine whether to monitor PO if the terminal is interested in the multicast service deactivation notification, and determine not to monitor PO if the terminal is not interested in the multicast service deactivation notification, when the indication information indicates that the paging message does not include the first information, or the indication information indicates that the paging message does not include the first information and the second information.

[0400] Optionally, the processing module 2401 is used to determine whether to monitor PO based on the indication information, including: the processing module 2401 is used to determine to monitor PO in at least one of the following cases: the indication information indicates that the paging message includes the second information; the indication information indicates that the paging message does not include the second information; the indication information indicates that the paging message includes the third information; the indication information indicates that the paging message does not include the third information; the indication information indicates that the paging message does not include the second and third information; the indication information indicates that the paging message includes the second information and / or the third information.

[0401] Optionally, the processing module 2401 is used to determine whether to monitor PO based on the indication information, including: the processing module 2401 is used to determine to monitor PO when the first indication information indicates that the paging message includes the first information and / or the second information; or, the processing module 2401 is used to determine not to monitor PO when the first indication information indicates that the paging message does not include the first information and the second information, and the second indication information indicates that the paging message does not include the third information; or, the processing module 2401 is used to determine to monitor or not monitor PO when the first indication information indicates that the paging message does not include the first information and the second information, and the second indication information indicates that the paging message includes the third information.

[0402] Optionally, the processing module 2401 is used to determine whether to monitor PO based on the indication information, including: the processing module 2401 is used to determine to monitor PO when the first indication information indicates that the paging message includes the first information; or, the processing module 2401 is used to determine not to monitor PO when the first indication information indicates that the paging message does not include the first information, and the second indication information indicates that the paging message does not include the second information and the third information; or, the processing module 2401 is used to determine to monitor or not monitor PO when the first indication information indicates that the paging message does not include the first information, and the second indication information indicates that the paging message includes the second information and / or the third information.

[0403] Optionally, the processing module 2401 is used to determine whether to monitor PO based on the indication information, including: the processing module 2401 is used to determine to monitor PO when the first indication information indicates that the paging message includes the first information and / or the third information; or, the processing module 2401 is used to determine not to monitor PO when the first indication information indicates that the paging message does not include the first information and the third information.

[0404] Optionally, the processing module 2401 is used to determine whether to monitor PO based on the indication information, including: the processing module 2401 is used to determine to monitor PO when the first indication information indicates that the paging message includes the first information; or, the processing module 2401 is used to determine whether to monitor or not to monitor PO when the first indication information indicates that the paging message does not include the first information and the second indication information indicates that the paging message does not include the second information.

[0405] Optionally, the processing module 2401 is used to determine whether to monitor PO based on the indication information, including: the processing module 2401 is used to determine to monitor PO when the first indication information indicates that the paging message includes the first information; or, the processing module 2401 is used to determine not to monitor PO when the first indication information indicates that the paging message does not include the first information, and the second indication information indicates that the paging message does not include the third information; or, the processing module 2401 is used to determine to monitor or not monitor PO when the first indication information indicates that the paging message does not include the first information, and the second indication information indicates that the paging message includes the third information.

[0406] Optionally, determining not to monitor or not to monitor PO includes: when the terminal is a terminal receiving multicast service in a connected state, determining not to monitor PO; or, when the terminal is a terminal receiving multicast service in a non-connected state, determining to monitor PO; or, when the terminal is a terminal receiving multicast service in a non-connected state, and the terminal is not interested in the multicast service deactivation notification, determining not to monitor PO; or, when the terminal is a terminal receiving multicast service in a non-connected state, and the terminal is interested in the multicast service deactivation notification, determining to monitor PO.

[0407] Optionally, the processing module 2401 is used to determine whether to monitor PO based on the indication information, including: the processing module 2401 is used to determine to monitor PO in at least one of the following cases: the first indication information indicates that the paging message includes the second information; the first indication information indicates that the paging message does not include the second information; the second indication information indicates that the paging message includes the third information; the second indication information indicates that the paging message does not include the third information.

[0408] Among them, all relevant contents of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module, and will not be repeated here.

[0409] In the present application, the terminal 240 is presented in the form of dividing various functional modules in an integrated manner. The "module" here may refer to an ASIC, a circuit, a processor and a memory that executes one or more software or firmware programs, an integrated logic circuit, and / or other devices that can provide the above functions.

[0410] In some embodiments, in terms of hardware implementation, those skilled in the art may imagine that the terminal 240 may use Figure 2 The form of the communication device 200 is shown.

[0411] As an example, Fig.24 The function / implementation process of the processing module 2401 in Figure 2 The processor 201 in the communication device 200 shown calls the computer execution instructions stored in the memory 203 to implement. Fig.24 The function / implementation process of the transceiver module 2402 can be Figure 2 The communication interface 204 in the communication device 200 shown is implemented.

[0412] In some embodiments, when Fig.24 When the terminal 240 is a chip or a chip system, the function / implementation process of the transceiver module 2402 can be implemented through the input and output interface (or communication interface) of the chip or the chip system, and the function / implementation process of the processing module 2401 can be implemented through the processor (or processing circuit) of the chip or the chip system.

[0413] Since the terminal 240 provided in this embodiment can execute the above method, the technical effects that can be obtained can refer to the above method embodiments and will not be repeated here.

[0414] Optionally, taking the communication device as the network device in the above method embodiment as an example, Fig.25 The schematic diagram shows a structure of a network device 250. The network device 250 includes a processing module 2501 and a transceiver module 2502.

[0415] In some embodiments, the network device 250 may also include a storage module ( Fig.25 ), for storing program instructions and data.

[0416] In some embodiments, the transceiver module 2502, which may also be referred to as a transceiver unit, is used to implement the sending and / or receiving functions. The transceiver module 2502 may be composed of a transceiver circuit, a transceiver, a transceiver or a communication interface.

[0417] In some embodiments, the transceiver module 2502 may include a receiving module and a sending module, which are respectively used to execute the receiving and sending steps performed by the network device in the above-mentioned method embodiments, and / or used to support other processes of the technology described in this document; the processing module 2501 may be used to execute the processing steps (such as determination, etc.) performed by the network device in the above-mentioned method embodiments, and / or used to support other processes of the technology described in this document.

[0418] In some embodiments:

[0419] The processing module 2501 is used to determine the indication information; the transceiver module 2502 is used to send the indication information. The indication information indicates at least one of the following: whether the paging message includes the first information, whether the paging message includes the second information, or whether the paging message includes the third information; the first information indicates the multicast service, the second information indicates whether the current cell provides the multicast service to the non-connected terminal, and the third information indicates not to receive the multicast service. The indication information is used by the terminal to determine whether to monitor the paging opportunity PO.

[0420] In other embodiments:

[0421] The processing module 2501 is used to determine the indication information; the transceiver module 2502 is used to send the indication information. The indication information indicates whether the paging message includes the identifier of the multicast service. The multicast service belongs to the service list. The service list includes the multicast services provided by the network device, or the service list includes the multicast services joined by the terminal released by the network device.

[0422] Optionally, the transceiver module 2502 is further configured to send an indication of a last used cell.

[0423] Among them, all relevant contents of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module, and will not be repeated here.

[0424] In the present application, the network device 250 is presented in the form of dividing each functional module in an integrated manner. The "module" here may refer to a specific application-specific integrated circuit (ASIC), a circuit, a processor and a memory that executes one or more software or firmware programs, an integrated logic circuit, and / or other devices that can provide the above functions.

[0425] In some embodiments, in terms of hardware implementation, those skilled in the art may understand that the network device 250 may adopt Figure 2 The form of the communication device 200 is shown.

[0426] As an example, Fig.25The function / implementation process of the processing module 2501 in can be Figure 2 The processor 201 in the communication device 200 shown calls the computer execution instructions stored in the memory 203 to implement. Fig.25 The function / implementation process of the transceiver module 2502 can be achieved by Figure 2 The communication interface 204 in the communication device 200 shown is implemented.

[0427] In some embodiments, when Fig.25 When the network device 250 is a chip or a chip system, the function / implementation process of the transceiver module 2502 can be implemented through the input and output interface (or communication interface) of the chip or the chip system, and the function / implementation process of the processing module 2501 can be implemented through the processor (or processing circuit) of the chip or the chip system.

[0428] Since the network device 250 provided in this embodiment can execute the above method, the technical effects that can be obtained can refer to the above method embodiments and will not be repeated here.

[0429] As a possible product form, the network device or terminal described in the embodiments of the present application can be implemented using the following: one or more field programmable gate arrays (FPGA), programmable logic devices (PLD), controllers, state machines, gate logic, discrete hardware components, any other suitable circuits, or any combination of circuits that can perform the various functions described throughout the present application.

[0430] As another possible product form, the terminal or network device described in the embodiment of the present application can be implemented by a general bus architecture. Fig.26 , Fig.26 2 is a schematic diagram of the structure of a communication device 2600 provided in an embodiment of the present application, wherein the communication device 2600 includes a processor 2601 and a transceiver 2602. The communication device 2600 may be a terminal, or a chip therein; or, the communication device 2600 may be a network device, or a chip or module therein. Fig.26 Only the main components of the communication device 2600 are shown. In addition to the processor 2601 and the transceiver 2602, the communication device may further include a memory 2603 and an input and output device (not shown in the figure).

[0431] Optionally, the processor 2601 is mainly used to process the communication protocol and communication data, and to control the entire communication device, execute the software program, and process the data of the software program. The memory 2603 is mainly used to store the software program and data. The transceiver 2602 may include a radio frequency circuit and an antenna. The radio frequency circuit is mainly used for converting baseband signals and radio frequency signals and processing radio frequency signals. The antenna is mainly used to transmit and receive radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are mainly used to receive data input by users and output data to users.

[0432] Optionally, the processor 2601, the transceiver 2602, and the memory 2603 may be connected via a communication bus.

[0433] When the communication device is turned on, the processor 2601 can read the software program in the memory 2603, interpret and execute the instructions of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor 2601 performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal and then sends the radio frequency signal outward in the form of electromagnetic waves through the antenna. When data is sent to the communication device, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 2601. The processor 2601 converts the baseband signal into data and processes the data.

[0434] In another implementation, the RF circuit and antenna may be arranged independently of the processor performing baseband processing. For example, in a distributed scenario, the RF circuit and antenna may be arranged remotely from the communication device.

[0435] In some embodiments, an embodiment of the present application further provides a communication device, which includes a processor. The communication device can be used to implement the functions of the terminal or network device in the above embodiments and implement the method in any of the above method embodiments.

[0436] As a possible implementation, the communication device further includes a memory. The memory is used to store necessary computer programs and data. The computer program may include instructions, and the processor may call the instructions in the computer program stored in the memory to instruct the communication device to execute the method in any of the above method embodiments. Of course, the memory may not be in the communication device.

[0437] As another possible implementation, the communication device also includes an interface circuit, which is a code / data read / write interface circuit, which is used to receive computer execution instructions (computer execution instructions are stored in a memory, may be read directly from the memory, or may pass through other devices) and transmit them to the processor.

[0438] As another possible implementation manner, the communication device further includes a communication interface, and the communication interface is used to communicate with a module outside the communication device.

[0439] It can be understood that the communication device can be a chip or a chip system. When the communication device is a chip system, it can be composed of chips, or it can include chips and other discrete devices. The embodiments of the present application do not specifically limit this.

[0440] The present application also provides a computer-readable storage medium on which a computer program or instruction is stored. When the computer program or instruction is executed by a computer, the functions of any of the above method embodiments are implemented.

[0441] The present application also provides a computer program product, which implements the functions of any of the above method embodiments when executed by a computer.

[0442] Those skilled in the art will appreciate that, for the sake of convenience and brevity of description, the specific working processes of the systems, devices and units described above may refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0443] It is understood that the systems, devices and methods described in the present application can also be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0444] The units described as separate components may or may not be physically separated, i.e., they may be located in one place, or they may be distributed over multiple network units. The components shown as units may or may not be physical units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0445] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0446] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using a software program, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loading and executing computer program instructions on a computer, all or part of the processes (or functions) described in the embodiments of the present application are implemented. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium may be any available medium that a computer can access or may contain one or more servers, data centers and other data storage devices that can be integrated with the medium. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (eg, a solid state drive (SSD)), etc. In the embodiment of the present application, the computer may include the aforementioned device.

[0447] Although the present application is described herein in conjunction with various embodiments, in the process of implementing the claimed application, those skilled in the art may understand and implement other variations of the disclosed embodiments by viewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "one" or "an" does not exclude multiple situations. A single processor or other unit may implement several functions listed in a claim. Certain measures are recorded in different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0448] Although the present application has been described in conjunction with specific features and embodiments thereof, it is obvious that various modifications and combinations may be made thereto without departing from the spirit and scope of the present application. Accordingly, this specification and the drawings are merely exemplary illustrations of the present application as defined by the appended claims, and are deemed to have covered any and all modifications, variations, combinations or equivalents within the scope of the present application. Obviously, those skilled in the art may make various modifications and variations 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 communication method, characterized in that: The method comprises: receiving indication information, the indication information indicating at least one of the following: whether the paging message includes first information, whether the paging message includes second information, or whether the paging message includes third information; the first information indicates a multicast service, the second information indicates whether the current cell provides a multicast service to a non-connected terminal, and the third information indicates not to receive the multicast service; Determine whether to monitor the paging occasion PO according to the indication information.

2. The method according to claim 1, characterized in that The determining whether to monitor the PO according to the indication information includes: In at least one of the following cases, it is determined to monitor the PO: The indication information indicates that the paging message includes the first information; The indication information indicates that the paging message includes the first information and / or the second information; The indication information indicates that the paging message includes the first information and / or the third information; The indication information indicates that the paging message includes at least one of the first information, the second information, or the third information; Alternatively, in at least one of the following cases, it is determined not to monitor the PO: The indication information indicates that the paging message does not include the first information; The indication information indicates that the paging message does not include the first information and the second information; The indication information indicates that the paging message does not include the first information and the third information; The indication information indicates that the paging message does not include the first information, the second information, and the third information.

3. The method according to claim 1, characterized in that The determining whether to monitor the PO according to the indication information includes: In a case where the indication information indicates that the paging message does not include the first information, or the indication information indicates that the paging message does not include the first information and the second information, it is determined to monitor the PO.

4. The method according to claim 1, characterized in that: The determining whether to monitor the PO according to the indication information includes: When the indication information indicates that the paging message does not include the first information, or the indication information indicates that the paging message does not include the first information and the second information: if the terminal is interested in the multicast service deactivation notification, it is determined to monitor the PO; if the terminal is not interested in the multicast service deactivation notification, it is determined not to monitor the PO.

5. The method according to any one of claims 1 to 4, characterized in that: The indication information is 1 bit of information.

6. The method according to claim 1, characterized in that The indication information includes first indication information and second indication information; The first indication information indicates whether the paging message includes the first information and / or the second information, and the second indication information indicates whether the paging message includes the third information.

7. The method according to claim 6, characterized in that The determining whether to monitor the PO according to the indication information includes: When the first indication information indicates that the paging message includes the first information and / or the second information, it is determined to monitor the PO; or, When the first indication information indicates that the paging message does not include the first information and the second information, and the second indication information indicates that the paging message does not include the third information, it is determined not to monitor the PO; or The first indication information indicates that the paging message does not include the first information and the second information, and the second indication information indicates that when the paging message includes the third information, it is determined to monitor or not monitor the PO.

8. The method according to claim 1, characterized in that The indication information includes first indication information and second indication information; The first indication information indicates whether the paging message includes the first information, and the second indication information indicates whether the paging message includes the second information and / or the third information.

9. The method according to claim 8, characterized in that The determining whether to monitor the PO according to the indication information includes: When the first indication information indicates that the paging message includes the first information, it is determined to monitor the PO; or, When the first indication information indicates that the paging message does not include the first information, and the second indication information indicates that the paging message does not include the second information and the third information, it is determined not to monitor the PO; or When the first indication information indicates that the paging message does not include the first information, and the second indication information indicates that the paging message includes the second information and / or the third information, it is determined whether to monitor or not monitor the PO.

10. The method according to claim 1, characterized in that The indication information includes first indication information and second indication information; The first indication information indicates whether the paging message includes the first information and / or the third information, and the second indication information indicates whether the paging message includes the second information.

11. The method according to claim 10, characterized in that The determining whether to monitor the PO according to the indication information includes: When the first indication information indicates that the paging message includes the first information and / or the third information, it is determined to monitor the PO; or, When the first indication information indicates that the paging message does not include the first information and the third information, it is determined not to monitor the PO.

12. The method according to claim 1, characterized in that The indication information includes first indication information and second indication information; The first indication information indicates whether the paging message includes the first information, and the second indication information indicates whether the paging message includes the second information.

13. The method according to claim 12, characterized in that The determining whether to monitor the PO according to the indication information includes: When the first indication information indicates that the paging message includes the first information, it is determined to monitor the PO; or, When the first indication information indicates that the paging message does not include the first information, and the second indication information indicates that the paging message does not include the second information, it is determined to monitor or not monitor the PO.

14. The method according to claim 1, characterized in that The indication information includes first indication information and second indication information; The first indication information indicates whether the paging message includes the first information, and the second indication information indicates whether the paging message includes the third information.

15. The method according to claim 14, characterized in that The determining whether to monitor the PO according to the indication information includes: When the first indication information indicates that the paging message includes the first information, it is determined to monitor the PO; or, When the first indication information indicates that the paging message does not include the first information, and the second indication information indicates that the paging message does not include the third information, it is determined not to monitor the PO; or When the first indication information indicates that the paging message does not include the first information, and the second indication information indicates that the paging message includes the third information, it is determined to monitor or not monitor the PO.

16. The method according to any one of claims 7, 9, 13, or 15, characterized in that: Determine not to monitor or not monitor the PO, including: When the terminal is a terminal receiving a multicast service in a connected state, determining not to monitor the PO; or, When the terminal is a terminal receiving a multicast service in a non-connected state, determining to monitor the PO; or, When the terminal is a terminal receiving a multicast service in a non-connected state and the terminal is not interested in a multicast service deactivation notification, determining not to monitor the PO; or, When the terminal is a terminal that receives a multicast service in a non-connected state and the terminal is interested in a multicast service deactivation notification, it is determined to monitor the PO.

17. The method according to any one of claims 1 to 16, characterized in that: The indication information is carried in the paging early indication PEI.

18. A communication method, characterized in that: The method comprises: Determine indication information, the indication information indicating at least one of the following: whether the paging message includes first information, whether the paging message includes second information, or whether the paging message includes third information; the first information indicates a multicast service, the second information indicates whether the current cell provides a multicast service to a non-connected terminal, and the third information indicates that the multicast service is not received; the indication information is used by the terminal to determine whether to monitor the paging opportunity PO; The indication information is sent.

19. The method according to claim 18, characterized in that The indication information includes first indication information and second indication information; The first indication information indicates whether the paging message includes the first information and / or the second information, and the second indication information indicates whether the paging message includes the third information.

20. The method according to claim 18, characterized in that The indication information includes first indication information and second indication information; The first indication information indicates whether the paging message includes the first information, and the second indication information indicates whether the paging message includes the second information and / or the third information.

21. The method according to claim 18, characterized in that The indication information includes first indication information and second indication information; The first indication information indicates whether the paging message includes the first information and / or the third information, and the second indication information indicates whether the paging message includes the second information.

22. The method according to claim 18, characterized in that The indication information includes first indication information and second indication information; The first indication information indicates whether the paging message includes the first information, and the second indication information indicates whether the paging message includes the second information.

23. The method according to claim 18, characterized in that The indication information includes first indication information and second indication information; The first indication information indicates whether the paging message includes the first information, and the second indication information indicates whether the paging message includes the third information.

24. The method according to claim 18, characterized in that The indication information is 1 bit of information.

25. The method according to any one of claims 18 to 24, characterized in that: The indication information is carried in the paging early indication PEI.

26. The method according to any one of claims 18 to 25, characterized in that The multicast service belongs to the service list; The service list includes multicast services provided by the network device, or the service list includes multicast services released by the network device and joined by the terminal.

27. The method according to claim 26, characterized in that In the case where the network device sends a last used cell indication, the multicast service belongs to the service list.

28. A communication method, characterized in that: The method comprises: Determine indication information, the indication information indicating whether the paging message includes an identifier of a multicast service, the multicast service belongs to a service list; the service list includes multicast services provided by the network device, or the service list includes multicast services joined by a terminal released by the network device; The indication information is sent.

29. The method according to claim 28, characterized in that The method further includes sending a last used cell indication.

30. A communication device, characterized in that: The communication device comprises a processor; the processor is configured to run a computer program or instructions so that the communication device executes the method according to any one of claims 1 to 29.

31. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions or programs. When the computer instructions or programs are executed on a computer, the method according to any one of claims 1 to 29 is executed.

32. A computer program product, characterized in that The computer program product includes computer instructions; when part or all of the computer instructions are run on a computer, the method according to any one of claims 1 to 29 is executed.

33. A chip system, characterized in that: include: a memory for storing computer program instructions; A processor, configured to execute the computer program instructions so that a communication device including the chip performs the method according to any one of claims 1 to 29.

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