Wireless communication method and apparatus

Abstract

To provide a wireless communication method and apparatus.SOLUTION: The method includes receiving, by a first terminal device, a first PEI, wherein the first PEI corresponds to at least one PO, and the first PEI is associated with first information, and the first information is used to indicate that a paging message in the at least one PO is a RAN-initiated paging message or a CN-initiated paging message.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] TECHNICAL FIELD This application relates to the field of communications, and more particularly to wireless communication methods and apparatus. [Background technology]

[0002] When a terminal device is in a radio resource control (RRC) idle state, the terminal device only needs to detect paging initiated by a core network (CN), whereas when the terminal device is in an RRC inactive state, the terminal device not only needs to detect paging initiated by a CN but also needs to detect paging initiated by a radio access network (RAN). Because the terminal device cannot distinguish between paging initiated by the RAN and paging initiated by the CN, this causes the terminal device in the RRC idle state to receive unnecessary RAN paging, thereby resulting in unnecessary power consumption. Summary of the Invention [Means for solving the problem]

[0003] In response to the above problem, the present application provides a wireless communication method and apparatus.

[0004] A first aspect provides a wireless communication method, including a step of receiving a first paging early indication (PEI) by a first terminal device, the first PEI corresponding to at least one PO, and the first paging early indication (PEI) being associated with first information, the first information being used to indicate that a paging message on the at least one paging occasion (PO) is a RAN-initiated paging message or a CN-initiated paging message.

[0005] A second aspect provides a wireless communication method, including a step in which a base station transmits a first PEI, the first PEI corresponding to at least one PO, and the first PEI is associated with first information, and the first information is used to indicate that a paging message in the at least one PO is a RAN-initiated paging message or a CN-initiated paging message.

[0006] A third aspect provides a wireless communication method, including a step of receiving a first PEI by a first terminal device, the first terminal device belonging to a first subgroup and a second subgroup, the first subgroup being used to receive paging messages initiated by a CN and the second subgroup being used to receive paging messages initiated by a RAN, the first PEI including first indication information and second indication information, the first indication information being indication information corresponding to the first subgroup and the second indication information being indication information corresponding to the second subgroup; and a step of the first terminal device detecting the first indication information and / or the second indication information.

[0007] A fourth aspect provides a wireless communication method, including a step in which a base station transmits a first PEI, where the first terminal device belongs to a first subgroup and a second subgroup, the first subgroup is used to receive paging messages initiated by a CN, and the second subgroup is used to receive paging messages initiated by a RAN, the first PEI includes first indication information and second indication information, where the first indication information is indication information corresponding to the first subgroup and the second indication information is indication information corresponding to the second subgroup; and a step in which the base station determines that the first terminal device detects the first indication information and / or the second indication information.

[0008] A fifth aspect provides a wireless communication device, the wireless communication device being a first terminal device, the wireless communication device including: a communication module used to receive a first PEI, the first PEI corresponding to at least one PO, and the first PEI associated with first information, the first information used to indicate that a paging message in the at least one PO is a RAN-initiated paging message or a CN-initiated paging message.

[0009] A sixth aspect provides a wireless communication device, the wireless communication device being a base station, the wireless communication device including: a communication module used to transmit a first PEI, the first PEI corresponding to at least one PO, and the first PEI associated with first information, the first information used to indicate that a paging message in the at least one PO is a RAN-initiated paging message or a CN-initiated paging message.

[0010] A seventh aspect provides a wireless communication device, the wireless communication device being a first terminal device, the device including: a communication module used to receive a first PEI, the first terminal device belonging to a first subgroup and a second subgroup, the first subgroup being used to receive a paging message initiated by a CN and the second subgroup being used to receive a paging message initiated by a RAN, the first PEI including first indication information and second indication information, the first indication information being indication information corresponding to the first subgroup and the second indication information being indication information corresponding to the second subgroup; and a detection module used to detect the first indication information and / or the second indication information.

[0011] An eighth aspect provides a wireless communication device, the wireless communication device being a base station, the wireless communication device including: a communication module used to transmit a first PEI, the first terminal device belonging to a first subgroup and a second subgroup, the first subgroup being used to receive paging messages initiated by a CN and the second subgroup being used to receive paging messages initiated by a RAN, the first PEI including first indication information and second indication information, the first indication information being indication information corresponding to the first subgroup and the second indication information being indication information corresponding to the second subgroup; and a determination module used to determine that the first terminal device detects the first indication information and / or the second indication information.

[0012] A ninth aspect provides a wireless communication device, comprising: a memory; and a processor, wherein the memory is used to store a program; and the processor is used to execute a method according to any one of the first to fourth aspects by calling the program in the memory.

[0013] A tenth aspect provides an apparatus, including a processor adapted to execute a method according to any one of the first to fourth aspects by calling a program from a memory.

[0014] An eleventh aspect provides a chip and includes a processor used to call a program from memory and cause a device to which the chip is attached to execute a method described in any one of the first to fourth aspects.

[0015] A twelfth aspect provides a computer-readable storage medium, on which a program is stored, the program causing a computer to execute a method according to any one of the first to fourth aspects.

[0016] A thirteenth aspect provides a computer program product, including a program, the program causing a computer to execute a method according to any one of the first to fourth aspects.

[0017] A fourteenth aspect provides a computer program, the computer program causing a computer to execute the method according to any one of the first to fourth aspects. [Brief explanation of the drawings]

[0018] [Figure 1A] 1 is a system architecture diagram of a communication system to which an embodiment of the present application can be applied. [Figure 1B] 1 is a system architecture diagram of a communication system to which an embodiment of the present application can be applied. [Figure 1C] 1 is a system architecture diagram of a communication system to which an embodiment of the present application can be applied. [Figure 2] FIG. 1 is a logic diagram of paging. [Figure 3] 1 is a schematic diagram illustrating the relationship between paging frames within a paging cycle and paging occasions. [Figure 4] 1 is a flowchart of a wireless communication method provided by one embodiment of the present application. [Figure 5] 4 is a flowchart of a wireless communication method provided by another embodiment of the present application; [Figure 6] 1 is a structural schematic diagram of a wireless communication device provided by an embodiment of the present application; [Figure 7] FIG. 2 is a structural schematic diagram of a wireless communication device provided by another embodiment of the present application; [Figure 8] FIG. 2 is a structural schematic diagram of a wireless communication device provided by yet another embodiment of the present application; [Figure 9] FIG. 2 is a structural schematic diagram of a wireless communication device provided by yet another embodiment of the present application; [Figure 10] 1 is a structural schematic diagram of a device provided in an embodiment of the present application; DETAILED DESCRIPTION OF THE INVENTION

[0019] Communication System Architecture

[0020] The technical solutions of the embodiments of the present application are applicable to various communication systems, such as a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (WCDMA) system, a general packet radio service (GPRS), a long term evolution (LTE) system, a long term evolution advanced (LTE-A) system, a new radio (NR) system, an evolution of an NR system, an LTE-based access to unlicensed spectrum (LTE-U) system, an NR-based access to unlicensed spectrum (NR-U) system, an NTN system, a universal mobile telecommunication system (UMTS), a wireless local area network (WLAN), a wireless fidelity system (WFI), a wireless local area network (WLAN), a wireless cellular system ... The present invention can be applied to wireless communication systems, such as Wi-Fi (Wireless Internet of Things), 5th-generation (5G) systems, or other communication systems, including future communication systems, such as 6th-generation mobile communication systems, and even satellite communication systems.

[0021] Generally, the number of connections supported by conventional communication systems is limited and easy to implement. However, with the development of communication technology, mobile communication systems not only support conventional communication, but also support, for example, device-to-device (D2D) communication, machine-to-machine (M2M) communication, machine-type communication (MTC), vehicle-to-vehicle (V2V) communication, or vehicle-to-everything (V2X) communication, and the embodiments of the present application can also be applied to these communication systems.

[0022] The communication system in the embodiments of the present application can be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, and even a standalone (SA) network construction scenario.

[0023] The communication system in the embodiments of the present application may be applied in an unlicensed spectrum, which may also be considered a shared spectrum, or the communication system in the embodiments of the present application may be applied in a licensed spectrum, which may also be considered a dedicated spectrum.

[0024] The embodiments of the present application may be applied to NTN systems and terrestrial networks (TN) systems, including, by way of example and not limitation, NR-based NTN systems and IoT-based NTN systems.

[0025] The embodiments of the present application are described in conjunction with network equipment and terminal equipment, where terminal equipment may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile equipment, user terminal, terminal, wireless communication equipment, user agent, or user device.

[0026] In embodiments of the present application, the terminal device may be a station (ST) in a 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 wireless communication capabilities, a computing device, other processing devices connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a next generation communication system, for example, a terminal device in an NR network, or a terminal device in a future evolved public land mobile network (PLMN) network, etc.

[0027] In embodiments of the present application, the terminal device may be a device that provides voice and / or data communication to a user and can be used to connect people, objects, and machines, such as a handheld device with wireless connectivity and an in-vehicle device. In embodiments of the present application, the terminal device may be a mobile phone, a tablet PC, a laptop, a palmtop PC, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, or a wireless terminal in a smart home. Optionally, the terminal device can function as a base station. For example, a terminal device can function as a scheduling entity, providing sidelink signals between terminal devices in V2X, D2D, etc. For example, a cellular phone and a car communicate with each other using sidelink signals, and a cellular phone and a smart home device communicate with each other without the need for a base station to relay communication signals.

[0028] In embodiments of the present application, the terminal device may be deployed on land, including indoors, outdoors, handheld, worn, or vehicle-mounted, on water (e.g., ships), and even in the air (e.g., airplanes, balloons, satellites, etc.).

[0029] In embodiments of the present application, the terminal device may be a mobile phone, a tablet computer, a computer with wireless transmission and reception capabilities, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home, etc. The terminal device involved in embodiments of the present application may also be referred to as a terminal, user equipment (UE), access terminal device, vehicle-mounted terminal, industrial control terminal, UE unit, UE station, mobile station, mobile station, remote station, remote terminal device, mobile device, UE terminal device, wireless communication device, UE agent, UE device, etc. The terminal device may be fixed or mobile.

[0030] For example and not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable devices, also known as wearable smart devices, are a general term for wearable devices developed by applying wearable technology to smartify everyday wear, such as glasses, gloves, watches, clothing, and shoes. Wearable devices are portable devices that can be worn directly on the body or integrated into a user's clothing or accessories. Wearable devices are not simply hardware devices, but achieve powerful functions through software support, data interaction, and cloud terminal interaction. In a broad sense, wearable smart devices include devices that are fully functional, large in size, and can achieve full or partial functions independently of a smartphone, such as smart watches or smart glasses, as well as devices that focus only on certain application functions and require use in conjunction with other devices, such as smartphones, such as various types of smart bracelets and smart necklaces that monitor physical symptoms.

[0031] The network equipment in the embodiments of the present application may be equipment used to communicate with terminal equipment, and may also be called access network equipment or radio access network equipment, for example, the network equipment may be a base station. The network equipment in the embodiments of the present application may refer to a RAN node (or equipment) that allows terminal equipment to access a radio network. The base station broadly covers or can be substituted for various names below, such as a Node B (Node B), evolved Node B (eNB), next generation Node B (gNB), relay station, access point, transmitting and receiving point (TRP), transmitting point (TP), master base station MeNB, secondary base station SeNB, multi-standard radio (MSR) node, home base station, network controller, access node, radio node, access point (AP), transmission node, transceiver node, base band unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), and positioning node. The base station may be a macro base station, a micro base station, a relay node, a donor node, or the like, or a combination thereof. The base station may also refer to a communication module, modem, or chip used to be installed in the above-mentioned device or apparatus. The base station may also refer to a mobile switching center, a device that performs the function of a base station in device-to-device D2D, vehicle-to-everything (V2X), machine-to-machine (M2M) communications, a network-side device in a 6G network, or a device that performs the function of a base station in a future communication system.The base stations may support networks of the same or different access technologies, and the embodiments of the present application do not limit the specific technologies adopted by the network equipment and the specific form of the equipment.

[0032] A base station may be fixed or mobile. For example, a helicopter or drone may be deployed to function as a mobile base station, and one or more cells may move based on the location of the mobile base station. In other examples, a helicopter or drone may be deployed to use as a device to communicate with another base station.

[0033] In some deployments, the network equipment in the embodiments of the present application may refer to a CU or a DU, or the network equipment may include a CU and a DU. The gNB may further include an AAU.

[0034] The network equipment and the terminal equipment may be deployed indoors, outdoors, handheld, or on land, including in a vehicle, or on water, or may be deployed in the air on an airplane, a balloon, or a satellite. The embodiments of the present application do not limit the scenario in which the network equipment and the terminal equipment are present.

[0035] By way of example and not limitation, in embodiments herein, the network equipment may have mobile characteristics, e.g., the network equipment may be a mobile equipment. In some embodiments herein, the network equipment may be a satellite or balloon base station. For example, the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, etc. In some embodiments herein, the network equipment may also be a base station installed in a location such as a land or water body.

[0036] In an embodiment of the present application, a network device can provide services for a cell, and a terminal device communicates with the network device through transmission resources (e.g., frequency domain resources or spectrum resources) used by the cell. The cell may be a cell corresponding to the network device (e.g., a base station), and the cell may belong to a macro base station or a base station corresponding to a small cell. The small cell here may include a metro cell, a micro cell, a pico cell, a femto cell, etc., and these small cells are characterized by a small coverage range and low transmission power and are adapted to provide high-rate data transmission services.

[0037] 1A is an architecture diagram of a communication system provided by an embodiment of the present application. As shown in FIG. 1A, the communication system 100 may include a network device 110, which may be a device that communicates with terminal devices 120 (also called communication terminals and terminals). The network device 110 may provide communication coverage for a specific geographic area and communicate with terminal devices located within the coverage area.

[0038] FIG. 1A exemplarily illustrates one network device and two terminal devices, and in some embodiments of the present application, the communication system 100 may include multiple network devices and may include other quantities of terminal devices within the coverage range of each network device, and the embodiments of the present application are not limited thereto.

[0039] For example, FIG. 1B is a schematic diagram of the architecture of another communication system provided by an embodiment of the present application. Referring to FIG. 1B, the communication system includes a terminal device 1101 and a satellite 1102, and wireless communication can be performed between the terminal device 1101 and the satellite 1102. The network formed between the terminal device 1101 and the satellite 1102 may also be referred to as an NTN. In the communication system architecture shown in FIG. 1B, the satellite 1102 may have base station functionality, and direct communication can be performed between the terminal device 1101 and the satellite 1102. In the system architecture, the satellite 1102 may be referred to as a network device. In some embodiments of the present application, the communication system may include multiple network devices 1102, and other numbers of terminal devices may be included within the coverage range of each network device 1102; this is not a limitation of the embodiments of the present application.

[0040] For example, FIG. 1C is a schematic diagram of the architecture of another communication system provided by an embodiment of the present application. Referring to FIG. 1C, the communication system includes a terminal device 1201, a satellite 1202, and a base station 1203. Wireless communication can be performed between the terminal device 1201 and the satellite 1202, and communication can be performed between the satellite 1202 and the base station 1203. The network formed among the terminal device 1201, the satellite 1202, and the base station 1203 may also be referred to as an NTN. In the communication system architecture shown in FIG. 1C, the satellite 1202 may not have base station functionality, and communication between the terminal device 1201 and the base station 1203 requires relaying by the satellite 1202. Under this system architecture, the base station 1203 may be referred to as a network device. In some embodiments of the present application, the communication system may include multiple network devices 1203, and other numbers of terminal devices may be included within the coverage range of each network device 1203; this is not a limitation of the embodiments of the present application.

[0041] As should be understood, Figures 1A to 1C merely illustrate the system applied to the present application in an exemplary manner, and of course, the methods shown in the embodiments of the present application can also be applied to other systems, such as 5G communication systems and LTE communication systems, and the embodiments of the present application are not specifically limited thereto.

[0042] In some embodiments of the present application, the wireless communication system shown in Figures 1A to 1C may further include other network entities such as a mobility management entity (MME) and an access and mobility management function (AMF), and the embodiments of the present application are not limited thereto.

[0043] It should be understood that in the network / system in the embodiment of the present application, a device having a communication function can be referred to as a communication device. Taking the communication system 100 shown in Figure 1A as an example, the communication device may include a network device 110 and a terminal device 120 having a communication function, where the network device 110 and the terminal device 120 may be the specific devices described above, and detailed descriptions will be omitted here. The communication device may also include other devices in the communication system 100, such as other network entities such as a network controller and a mobility management entity, and the embodiment of the present application is not limited thereto.

[0044] As should be understood, the "instruction" referred to in the embodiments of the present application may be a direct instruction or an indirect instruction, and may further represent an association relationship. For example, when A instructs B, it may represent that A directly instructs B, for example, B can be obtained by A, and it may represent that A indirectly instructs B, for example, A instructs C, and B can be obtained by C, and it may further represent that A and B have an association relationship.

[0045] In describing the embodiments of the present application, the term "correspondence" may indicate that there is a direct or indirect correspondence relationship between the two, or that there is an association relationship between the two, such as a relationship between a directive and a directive, or a relationship between a setting and a setting.

[0046] In the embodiments of the present application, "configuring" may include configuring via at least one of a system message, RRC signaling, and a media access control element (MAC CE).

[0047] In some embodiments of the present application, "predefined" or "preset" may be realized by pre-storing a corresponding code, table, or other method that can be used to indicate correlation information in a device (including, for example, a terminal device and a network device), and the present application does not limit the specific implementation method. For example, being pre-defined may refer to being defined in a protocol.

[0048] In some embodiments of the present application, the above "protocol" may refer to a standard protocol in the communications field, and may include, for example, an LTE protocol, an NR protocol, and correlation protocols applied in future communications systems, but the present application is not limited thereto.

[0049] For ease of understanding, we first introduce some correlation technology knowledge involved in the embodiments of the present application. Hereinafter, correlation technology can be arbitrarily combined with the technical solutions of the embodiments of the present application as an optional solution, and they all fall within the protection scope of the embodiments of the present application. The embodiments of the present application include at least some of the following contents:

[0050] RRC Status

[0051] Some communication systems (e.g., NR systems) introduce three states for RRC: an RRC idle state (RRC_IDLE state), an RRC inactive state (RRC_INACTIVE state), and an RRC connected state (RRC_CONNECTED state). The three states reflect the connection status between the terminal device and the base station and the CN.

[0052] A terminal device in the RRC idle state has no RRC context on the network side; that is, parameters essential for communication between the network side and the terminal device do not belong to a specific cell, and the network side does not even know whether the terminal device exists. The terminal device is assigned a tracking area identifier (TAI) list. From the core network's perspective, the connection between the RAN side and the core network is disconnected. To reduce power consumption, the terminal device is in hibernation most of the time and therefore cannot perform data transmission. In the downlink, a terminal device in the RRC idle state can be periodically woken up to receive paging messages (if any) from the network side. Mobility can be handled by the terminal device performing cell reselection. In the RRC idle state, the terminal device and the network side do not maintain uplink synchronization, and if a transition from the RRC idle state to the RRC connected state is required, an RRC context can only be established between the terminal device and the network side by random access.

[0053] In the RRC connected state, an RRC context can be established, and all parameters required for communication are known to both the terminal device and the network. From the core network's perspective, the terminal device is connected to the core network. The cell to which the terminal device belongs is known, and a device identifier, i.e., a cell-radio network temporary identifier (C-RNTI), used for transmitting signaling between the terminal device and the network is configured. Data can be transmitted in the RRC connected state, but data streams are usually sporadic. Therefore, when there is no data stream transmission, the terminal device can reduce power consumption by closing the receiver circuit and adopting DRX technology. Because an RRC context is established in the base station in the connected state, it is relatively fast to switch off DRX and start receiving / transmitting data. In the connected state, mobility can be controlled by the network; that is, the terminal device provides measurements of neighboring cells to the network, and the network commands the device to switch. Upstream time synchronization may or may not exist, and can be established by using random access when data transmission is required.

[0054] In LTE, only the RRC idle state and the RRC connected state are supported. A common situation in practice is to use the RRC idle state as the main sleep state of a terminal device to save power. However, in some terminal devices, frequent transmission of small data packets always exists, so if LTE is used, there will be a large number of transitions from the RRC idle state to the RRC connected state. These transitions increase the signaling load and signaling delay. Therefore, to reduce the signaling load and latency, the RRC inactive state is introduced in NR.

[0055] In the RRC inactive state, the RRC context between the network side and the terminal device side is maintained. From the perspective of the core network, the RAN side and the core network are in a connected state. Therefore, the speed of transitioning from the inactive state to the connected state is very fast, and no core network signaling is required. At the same time, the terminal device is allowed to perform hibernation in a manner similar to the RRC idle state, and handles mobility through cell reselection. Therefore, the RRC inactive state can be regarded as a mixture of the idle and connected states. In addition, the terminal device can perform the above-mentioned positioning measurements in the RRC inactive state. Performing positioning measurements in the RRC inactive state does not require the terminal device to switch to the RRC connected state, thereby saving overhead and reducing latency.

[0056] As can be seen from the above introduction, one important difference between different RRC states is the different mobility mechanisms. Efficient mobility handling is a key part of any mobile communication system. For RRC idle and RRC inactive states, mobility is handled by the terminal equipment through cell reselection, while for RRC connected state, mobility is handled by the network side based on terminal equipment measurements.

[0057] Paging

[0058] For a terminal device in an RRC idle state or an RRC inactive state, the terminal device can be switched to an RRC connected state by a paging method. The paging process may be triggered by the core network side and used to send a paging request to a terminal device in an RRC idle state or an RRC inactive state, or the paging may be triggered by the access network side and used to notify a terminal device in an inactive state to initiate a connection recovery process, or to notify terminal devices in all states under the coverage of the access network to receive system information updates, or to notify terminal devices in all states under the coverage of the access network to receive alarm information sent from an earthquake and tsunami warning system (ETWS) and a commercial mobile alert system (CMAS).

[0059] The logic diagram of paging is shown in Figure 2. As can be seen from Figure 2, the entire paging process involves mapping from a logical channel to a transport channel and finally to a physical channel, where a demodulation reference signal (DMRS) can be used to demodulate uplink / downlink data.

[0060] The paging process may be initiated by the CN or by the RAN (or base station). For example, if the paging process is initiated by the CN, it can be initiated by the access and mobility management function (AMF) in the CN. If the paging message is initiated by the CN, the core network device will transmit the paging message to all base stations within the tracking area (TA) in which the terminal device has registered. After receiving the paging message transmitted by the core network device, the base station will decode the content thereof, obtain a tracking area identity (TAI) list of the paged terminal device, and then perform air interface paging within cells belonging to the tracking area in the list. Typically, to save the overhead of transmitting paging messages, after receiving the paging message transmitted by the core network device, the base station can combine paging messages corresponding to terminal devices with the same PO into one paging message and finally transmit it to the associated terminal device via a paging channel. After receiving the paging message, the terminal device in the RRC idle state can receive data or signaling by initiating an RRC connection establishment procedure.

[0061] The paging message is carried by a physical downlink shared channel (PDSCH). Before receiving the paging message, the terminal device first needs to receive paging parameters through a system message and calculate the frame number of the paging frame (PF) where the paging message is located and the PO together with the respective UE_ID. Then, the terminal device receives paging indication information by monitoring a physical downlink control channel (PDCCH) scrambled by the P-RNTI within the PO in the PF, and finally receives the paging message based on the paging indication information. As can be seen, the paging indication information is carried on the PDCCH, and the paging message can be used to indicate the resource location of the PDSCH carrying the paging message.

[0062] For example, a terminal device can obtain downlink control information (DCI) by detecting a PDCCH in a PO, and a cyclic redundancy check (CRC) of the DCI is scrambled by the P-RNTI. If the terminal device detects the DCI, it can receive a PDSCH at a resource location (e.g., a time domain resource location and / or a frequency domain resource location) indicated by the DCI. The terminal device can decode the PDSCH using a temporary mobile subscriber identity (TMSI) (e.g., 5G-S-TMSI). If the decoding is successful, it indicates that the terminal device is paged, and the terminal device obtains a paging message from the PDSCH. If the decoding fails, it indicates that the terminal device is not paged.

[0063] The PF represents the frame number of the system frame in which the paging message should appear, and the PO represents the time at which the paging message may appear. Figure 3 shows the location of the PF within the DRX cycle and the location of the PO within the PF. As shown in Figure 3, the PF is located within the DRX cycle (or paging cycle) T, and one paging cycle includes N PFs, Ns POs in one PF, and S time slots or synchronization signal block (SSB) beams in one PO. Here, N, Ns, and S are all positive integers. Multiple POs in one paging cycle may correspond to different terminal devices. However, for a certain terminal device, the terminal device only needs to monitor the PO belonging to itself within one paging cycle.

[0064] As described above, the terminal device can calculate a PF and a PO based on a UE identity (ID). In some implementations, a system frame corresponding to a system frame number (SFN) that satisfies the formula (SFN + PF_offset) mod T = (T div N) * (UE_ID mod N) can be one PF, and an index i_s of a PO corresponding to the terminal device can be calculated within the PF according to the formula i_s = floor (UE_ID / N) mod Ns. Here, T represents the cycle length of the paging cycle of the terminal device, UE_ID is used to identify the terminal device, N represents the number of PFs in the paging cycle, and Ns represents the number of POs in one PF. PF_offset represents the frame offset of the PF.

[0065] As should be explained, for one terminal device, if the default DRX cycle and the DRX cycle set for the terminal device are different, the cycle length of the smaller of the two DRX cycles can be selected as the above T. That is, T = min(T_UE, T_sib), where T_sib represents the cycle length of the default DRX cycle indicated in the system message, and T_UE represents the cycle length of the DRX cycle set for the terminal device. Of course, for terminal devices for which T_UE is not set, the cycle length of the default DRX cycle indicated in the system message can be used as the value of T, that is, T = T_sib.

[0066] As further explained, the UE_ID can be calculated by the formula UE_ID=(5G-S-TMSI mod 1024), where 5G-S-TMSI represents the TMSI assigned to the terminal equipment by the communication system.

[0067] In addition, in NR technology, for a terminal device in an RRC idle state, the network device does not know which transmission beam to use to transmit a paging message to the terminal device. To ensure that the terminal device can receive the paging message, the network device transmits the paging message using a wave speed scan method. To support multi-beam transmission of paging messages, a PO can be defined as a group of PDCCH monitoring occasions, and different PDCCH monitoring occasions correspond to paging indication information transmitted by different transmission beams. One PF may include one or more POs or the start time points of the POs.

[0068] Since each SSB index corresponds to one PDCCH monitoring occasion and different SSB indexes correspond to different beams, multiple PDCCH monitoring occasions in one PO can be associated with transmission beams corresponding to different SSB indices to support multi-beam transmission of paging messages. Here, the messages transmitted in each SSB beam are exactly the same. Typically, the SSBs required to complete one beam scan constitute an "SSB burst set." The PDCCH monitoring occasions are a series of time-domain positions determined by a paging search space.

[0069] The PDCCH monitoring occasions are numbered starting from the first PDCCH monitoring occasion in one PF and continuing to the next PF. S consecutive PDCCH monitoring occasions constitute one PO, where S is the number of SSBs actually transmitted. The number of the starting PDCCH monitoring occasion for each PO can be determined by the parameter firstPDCCH-MonitoringOccasionOfPO. If this parameter is present, the number of the starting PDCCH monitoring occasion for the (i_s+1)th PO is the (i_s+1)th value of this parameter. If this parameter is not present, all PDCCH monitoring occasions constitute a PO one by one in sequence, and the number of the starting PDCCH monitoring occasion for the (i_s+1)th PO is i_s*S.

[0070] As should be mentioned, the PDCCH monitoring occasions constituting one PO may be located within one PF or may be located within two PFs, i.e., the PDCCH monitoring occasions included in one PO may span frames.

[0071] As can be seen from the above introduction, the terminal device can acquire paging indication information by adopting a method similar to the DRX mechanism, with the paging cycle as a cycle, and periodically monitoring the PDCCH within the PO. However, for some terminal devices, although they may not be paged within a relatively long period of time, they still need to periodically wake up and monitor the PDCCH that may carry paging indication information. There is room for further optimization of the energy saving method for this type of terminal device.

[0072] P.E.I.

[0073] Among the POs configured for a terminal device, paging messages can be transmitted in only about 10% of the POs, while the remaining POs do not provide useful information for the terminal device. In other words, paging detection by the terminal device in the remaining 90% of the POs simply wastes power. Before paging detection, some communication systems (e.g., NR Rel-17) support transmission of a PEI. The PEI can be carried in a DCI. The PEI can be used to indicate whether there is a paging message for the terminal device in the future. Based on the PEI, the terminal device can decide whether to detect a paging message in the future PO or continue to sleep. Introducing the PEI can reduce the power consumption of the terminal device.

[0074] The PEI provides instructions for each subgroup (i.e., a group of terminal devices). For example, terminal devices sharing a PO can be divided into multiple subgroups. The PEI includes one or more corresponding indication information (or bits). The indication information corresponding to each subgroup can be used to indicate whether the terminal devices in the subgroup should detect a paging message in the subsequent PO or continue to sleep. The terminal device can find the corresponding indication information in the PEI based on the sequence number of a certain subgroup, and then determine whether it needs to detect a paging message in the subsequent PO based on the indication of the indication information.

[0075] Based on the above concepts introduced, the following describes in detail the embodiments of the present application.

[0076] Example 1

[0077] When the terminal equipment is in the RRC idle state, it only needs to detect paging initiated by the CN (hereinafter, paging initiated by the CN may be abbreviated as CN-side paging). When the terminal equipment is in the RRC inactive state, it not only needs to detect paging initiated by the CN but also needs to detect paging initiated by the RAN (hereinafter, paging initiated by the RAN may be abbreviated as RAN-side paging). As can be seen from this, a terminal equipment in the RRC inactive state is usually more likely to be paged than a terminal equipment in the RRC idle state. Because the terminal equipment cannot distinguish whether a paging is a paging initiated by the RAN or a paging initiated by the CN, this causes the terminal equipment in the RRC idle state to receive unnecessary RAN-side paging, thereby resulting in unnecessary power consumption. Compared with terminal equipment in the RRC inactive state, the number of terminal equipment in the RRC idle state may be significantly larger. Therefore, if it is possible to prevent terminal equipment in the RRC idle state from receiving unnecessary RAN-side paging, it is possible to realize increased power saving benefits for a large number of terminal equipment in the RRC idle state.

[0078] To address the above problem, the first embodiment of the present application will be described in detail below in conjunction with FIG.

[0079] 4 is a flowchart of a wireless communication method provided in Example 1. The method 400 in FIG. 4 can be performed by a first terminal device and a base station. The first terminal device and the base station may be any of the types of terminal device and base station mentioned above. The first terminal device may be a terminal device in an RRC idle state or a terminal device in an RRC inactive state.

[0080] 4, in step S410, a first terminal device receives a first PEI, which corresponds to at least one PO (e.g., a group of POs), or which is used to indicate whether the at least one PO contains a paging message for the first terminal device or a subgroup in which the first terminal device is located.

[0081] Before step S410, the method of FIG. 4 may further include a step in which the first terminal device receives or derives the sequence number of the subgroup. For example, if the CN selects to assign subgroup information of the first terminal device based on the characteristics of the first terminal device, the CN provides the subgroup sequence number of the first terminal device via non-access stratum (NAS) signaling during the registration process of the first terminal device. Furthermore, if the CN selects not to provide specific subgroup information, the subgroup sequence number can be calculated based on the UE_ID of the first terminal device and randomized accordingly. After the first terminal device receives or derives the subgroup sequence number, the first terminal device can decode the number of subgroups in the PO from the SIB-X. Then, the first terminal device can decode the number of POs associated with one PEI from the SIB-X. Then, the first terminal device can determine PEI resources and monitoring opportunities based on the PDCCH, and determine the corresponding positions of the subgroups in the PEI based on the PDCCH. Based on the above steps, the first terminal device continues to execute step S410 in FIG. 4, thereby obtaining subgroup indication information from the first PEI, so as to determine whether the PO corresponding to the first PEI contains a paging message for the first terminal device.

[0082] The first PEI may be associated with first information. The first information may be used to determine (or indicate) whether a paging message in the at least one PO is a RAN-initiated paging message or a CN-initiated paging message. The first information may be implemented in a variety of ways. For example, the first indication information may directly indicate the type of paging message, or may indirectly indicate the type of paging message by indicating other information. The first indication information may indicate one or more of the following: that the paging message corresponding to the first PEI is a CN-side paging, a RAN-side paging, or that the paging message includes both a CN-side paging and a RAN-side paging. Alternatively, the first indication information may indicate one or more of the following: that all paging messages corresponding to the first PEI are RAN-initiated paging messages, and the first information indicates that the paging message corresponding to the first PEI includes a CN-initiated paging message. Below, specific formats and indication methods of the first information will be described in more detail with examples in conjunction with Examples 1.1 to 1.4.

[0083] Example 1.1

[0084] The first information can be used to determine or indicate a first information field and a second information field in the first PEI. The first information field corresponds to a CN-initiated paging message, and the second information field corresponds to a RAN-initiated paging message. In other words, the indication information in the first information field is used to indicate whether a CN-initiated paging message is included in the PO corresponding to the first PEI, and the indication information in the second information field is used to indicate whether a RAN-initiated paging message is included in the PO corresponding to the first PEI.

[0085] In some embodiments, the first information region and the second information region can be arranged in a predetermined order in the first PEI. For example, the first information region can be located before the second information region in the first PEI. For another example, the first information region can be located after the second information region in the first PEI. Of course, in some other embodiments, the first information region and the second information region can be arranged crosswise in the first PEI according to a predetermined rule.

[0086] In some embodiments, the first information may include second information. The second information may indicate the number of subgroups in the first information field and / or the number of subgroups in the second information field. The subgroups in the first information field are subgroups that receive and include CN-initiated paging messages. The subgroups in the second information field are subgroups that receive RAN-initiated paging messages.

[0087] In some embodiments, the second information is determined based on an SIB message, i.e., the SIB message can be used to inform the first terminal device of the number of subgroups in the first information field and / or the number of subgroups in the second information field, or the second information can be predefined by a protocol.

[0088] In some embodiments, the first information may include third information. The third information may indicate the order of the first information area and the second information area in the first PEI. For example, the third information may indicate that the first information area is located before the second information area, and further, for example, the third information may indicate that the first information area is located after the second information area.

[0089] In some embodiments, the third information may be determined based on an SIB message. That is, the SIB message may be used to notify the first terminal device of the order of the first information field and the second information field in the first PEI. Alternatively, the third information may be predefined by a protocol. That is, the protocol may specify the order of the first information field and the second information field in the first PEI.

[0090] In some embodiments, if the first terminal device is in an RRC inactive state, in the first PEI, the sequence numbers of the subgroups (also called bit sequence numbers) of the first terminal device are as follows:

number

[0091] In some embodiments, if the first terminal device is in an RRC idle state, the first terminal device only reads information in the first information field, i.e., the first terminal device only reads information in the information field corresponding to CN-side paging. In this way, even if the PO corresponding to the first PEI includes RAN-side paging, the terminal device in the RRC idle state will not be affected and woken up to perform subsequent paging detection, thereby saving power consumption of the terminal device.

[0092] If the terminal device is in an RRC inactive state, the terminal device may accept CN-side paging and may also accept RAN-side paging. When transmitting paging messages over the air interface, paging messages that overlap in the time domain may be aggregated by the RAN into one paging message and transmitted over the same paging channel. Therefore, in some embodiments, it may be specified (e.g., predefined in a protocol) that the indication information of the subgroup to which the terminal device in the RRC inactive state belongs is located in the first information field of the first PEI (i.e., the information field corresponding to the CN-side paging). Alternatively, for a terminal device in the RRC inactive state, the subgroup indication information in the first information field of the first PEI is valid indication information, and the subgroup indication in the second information field of the first PEI is invalid indication information.

[0093] In some other embodiments, it may be specified (e.g., predefined in a protocol) that indication information of a subgroup to which a terminal device in an RRC inactive state belongs is located in the second information field of the first PEI (i.e., an information field corresponding to RAN-side paging). Alternatively, for a terminal device in an RRC inactive state, the subgroup indication information in the second information field of the first PEI is valid indication information, and the subgroup indication in the first information field of the first PEI is invalid indication information. Doing so has two main advantages. First, a terminal device in an RRC inactive state is usually more likely to be paged than a terminal device in an RRC idle state. If a terminal device in an RRC idle state and a terminal device in an RRC inactive state were located in the same subgroup, the probability of the terminal device in the RRC idle state being erroneously activated would increase. RAN-side paging is more frequent than CN-side paging messages, and respectively indicating RAN-side paging and CN-side paging can prevent RAN-side paging from activating a terminal device that only receives CN-side paging (i.e., a terminal device in an RRC idle state). Second, when a terminal device is in an RRC inactive state, the terminal device may belong to two different subgroups, and therefore one PEI may contain indication information for the two subgroups at the same time. The above solution corresponds to clarifying the location of the valid indication information in the PEI when the terminal device has indication information for two subgroups, thereby avoiding a situation where the base station and the terminal device have different understandings.

[0094] In some embodiments, in the subgroup indicated by the first PEI, the terminal equipment in the RRC idle state and the terminal equipment in the RRC inactive state belong to different subgroups. Terminal equipment in the RRC inactive state is usually more likely to be paged than terminal equipment in the RRC idle state. If there are terminal equipment in the RRC inactive state and terminal equipment in the RRC idle state in one subgroup, in this case, the probability that the terminal equipment in this subgroup will be paged can be improved. The above embodiment assigns the terminal equipment in the RRC inactive state and the terminal equipment in the RRC idle state to different subgroups, thereby preventing the paging of the terminal equipment in the RRC inactive state from waking up the terminal equipment in the RRC idle state.

[0095] Example 1.2

[0096] The first information can be carried by at least one bit in the first PEI. For example, one or more additional bits in the first PEI can indicate the type of paging message in the PO corresponding to the first PEI. For example, if the value of the at least one bit is a first value, all paging messages corresponding to the first PEI are RAN-initiated paging messages. Furthermore, for example, if the value of the at least one bit is a second value, the paging messages corresponding to the first PEI include CN-initiated paging messages.

[0097] As one specific example, one bit can be newly added in the first PEI, and when the value of the newly added bit is 1, it can indicate that all paging in the PO corresponding to the first PEI is RAN-side paging, and when the value of the newly added bit is 0, it can indicate that the PO corresponding to the first PEI includes a paging message initiated by the CN.

[0098] Example 1.3

[0099] The first information is an RNTI used to scramble the first PEI. That is, scrambling the first PEI with a different RNTI can indicate the type of paging message in the PO corresponding to the first PEI. For example, if the first PEI is scrambled with the first RNTI, all paging messages corresponding to the first PEI are RAN-initiated paging messages. For example, if the first PEI is scrambled with the second RNTI, the paging messages corresponding to the first PEI include CN-initiated paging messages.

[0100] The advantages of the above-mentioned implementation method of the first information are as follows: In most situations, the terminal device knows the type of paging message in the PO corresponding to the first PEI after completing the CRC check. For a terminal device in RRC idle state, if it determines through the CRC check that all paging messages in the PO corresponding to the first PEI are RAN-side paging, there is no need to analyze the information bits in the PEI.

[0101] Example 1.4

[0102] The first information is a DCI carrying a first PEI. That is, different DCIs can be adopted to indicate the type of paging message in the PO corresponding to the first PEI. For example, if the DCI carrying the first PEI is the first DCI, all paging messages corresponding to the first PEI are RAN-initiated paging messages. For example, if the DCI carrying the first PEI is the second DCI, the paging messages corresponding to the first PEI include CN-initiated paging messages.

[0103] In some embodiments, if the first terminal device is in an RRC inactive state, the first terminal device reads the first DCI.

[0104] In some embodiments, if the first terminal device is in an RRC idle state, the first terminal device reads the second DCI.

[0105] The above-mentioned implementation of the first information can reduce the detection complexity of the terminal device, because in most situations, there is no paging from the CN side or the RAN side in the PO corresponding to the first PEI, and in most situations, the PEI indication is all 0, which means that the DCI carrying the PEI is all 0. For the all-0 DCI, the terminal device can detect it according to a sequence matching method, without needing to perform decoding, and the detection complexity is low.

[0106] Example 2

[0107] A situation may occur in which a terminal device has sequence numbers of two PEI subgroups in a PEI. For example, the terminal device can simultaneously receive a paging transmitted by a CN and a paging transmitted by a RAN, and the paging transmitted by the CN and the paging transmitted by the RAN correspond to sequence numbers of different PEI subgroups. Furthermore, for example, a situation may occur in which the paging transmitted by a CN and the paging transmitted by a RAN have different paging cycles, and the paging initiated by a CN and the paging initiated by a RAN overlap in some POs and correspond to sequence numbers of different PEI subgroups. Under such a situation, a situation may occur in which the terminal device has an unclear understanding of the subgroups. For example, the terminal device does not know which subgroup the instruction information corresponds to in order to perform subsequent processing.

[0108] To address the above problem, the second embodiment of the present application will be described in detail below in conjunction with FIG.

[0109] FIG. 5 is a flowchart of a wireless communication method provided by Example 2. The method 500 of FIG. 5 can be performed by a first terminal device and a base station. The first terminal device and the base station may be any type of terminal device and base station mentioned above. The first terminal device may be a terminal device in an RRC inactive state. The first terminal device can simultaneously belong to a first subgroup and a second subgroup. The first subgroup is used to receive paging messages initiated by the CN. The second subgroup is used to receive paging messages initiated by the RAN.

[0110] 5, in step S510, the first terminal device receives a first PEI. The first PEI may include first indication information and second indication information. The first indication information is indication information corresponding to a first subgroup. That is, the first indication information can be used to indicate whether a paging message of the first subgroup is included in the PO corresponding to the first PEI. The second indication information is indication information corresponding to a second subgroup. That is, the second indication information can be used to indicate whether a paging message of the second subgroup is included in the PO corresponding to the first PEI.

[0111] Before step S510, the method of FIG. 5 may further include a step in which the first terminal device receives or derives a sequence number for the subgroup. For example, if the CN selects to assign subgroup information for the first terminal device based on the characteristics of the first terminal device, the CN provides the subgroup sequence number for the first terminal device through NAS signaling during the registration process of the first terminal device. Furthermore, if the CN selects not to provide specific subgroup information, the subgroup sequence number can be calculated based on the UE_ID of the first terminal device and randomized accordingly. After the first terminal device receives or derives the subgroup sequence number, the first terminal device can decode the number of subgroups in the PO from the SIB-X. The first terminal device can then decode the number of POs associated with one PEI from the SIB-X. The first terminal device can then determine PEI resources and monitoring opportunities based on the PDCCH, and determine the corresponding positions of the subgroups in the PEI based on the PDCCH. Based on the above steps, the first terminal device continues to execute step S510 in FIG. 5, thereby obtaining subgroup indication information from the first PEI, so as to determine whether the PO corresponding to the first PEI contains a paging message for the first terminal device.

[0112] In step S520, the first terminal device detects the first indication information and / or the second indication information.

[0113] In some embodiments, the first terminal device may detect the first indication information but not the second indication information. Furthermore, in some embodiments, the first terminal device detecting the first indication information but not the second indication information may be predefined by a protocol or indicated by higher layer signaling.

[0114] In some embodiments, the first terminal device may detect the second indication information but not the first indication information. Furthermore, in some embodiments, the first terminal device may detect the second indication information but not the first indication information, which may be predefined by a protocol or indicated by higher layer signaling.

[0115] In some embodiments, the first terminal device can detect the first indication information and the second indication information.

[0116] As an example, if at least one of the first instruction information and the second instruction information indicates that the first terminal device needs to detect a PO corresponding to the first PEI, the first terminal device will detect the PO corresponding to the first PEI, thus reducing the scheduling complexity between the base station and the network side.

[0117] As another example, if the first instruction information and the second instruction information both indicate that the first terminal device does not need to detect the PO corresponding to the first PEI, the first terminal device does not detect the PO corresponding to the first PEI.

[0118] As yet another example, if at least one of the first instruction information and the second instruction information indicates that the first terminal device does not need to detect a PO corresponding to the first PEI, the first terminal device does not detect a PO corresponding to the first PEI.

[0119] The above describes in detail an embodiment of the method of the present application in conjunction with Figures 1 to 5, and the following describes in detail an embodiment of the device of the present application in conjunction with Figures 6 to 10. It should be understood that the description of the embodiment of the method corresponds to the description of the embodiment of the device, and therefore, for parts not described in detail, reference can be made to the previous embodiment of the method.

[0120] 6 is a structural schematic diagram of a wireless communication device provided by an embodiment of the present application. The device 600 in FIG. 6 is a first terminal device. The wireless communication device 600 may include a communication module 610.

[0121] The communication module 610 can be used to receive a first PEI, where the first PEI corresponds to at least one PO, and the first PEI is associated with first information, and the first information is used to indicate that a paging message in the at least one PO is a RAN-initiated paging message or a CN-initiated paging message.

[0122] In some embodiments, the first information is used to indicate a first information area and a second information area in the first PEI, where the first information area corresponds to a paging message initiated by the CN and the second information area corresponds to a paging message initiated by the RAN.

[0123] In some embodiments, the first information includes second information and / or third information, the second information indicating the number of subgroups in the first information area and / or the number of subgroups in the second information area, and the third information indicating the order of the first information area and the second information area in the first PEI.

[0124] In some embodiments, if the first terminal device is in an RRC inactive state, in the first PEI, the sequence number of the subgroup of the first terminal device is as follows:

number

[0125] In some embodiments, the second information is determined based on a SIB message or is predefined by a protocol, and / or the third information is determined based on a SIB message or is predefined by a protocol.

[0126] In some embodiments, information indicating the subgroup to which the terminal device in the RRC inactive state belongs is located in the second information area.

[0127] In some embodiments, it is predefined by a protocol that the indication information of the subgroup to which the terminal device in the RRC inactive state belongs is located in the second information area.

[0128] In some embodiments, in the subgroups indicated by the first PEI, the terminal equipment in the RRC idle state and the terminal equipment in the RRC inactive state belong to different subgroups.

[0129] In some embodiments, the first information is used to indicate that all paging messages corresponding to the first PEI are paging messages initiated by the RAN, or the first information indicates that the paging messages corresponding to the first PEI include paging messages initiated by the CN.

[0130] In some embodiments, the first information is carried by at least one bit in the first PEI.

[0131] In some embodiments, if the value of the at least one bit is a first value, all paging messages corresponding to the first PEI are RAN-initiated paging messages, and / or if the value of the at least one bit is a second value, the paging messages corresponding to the first PEI include CN-initiated paging messages.

[0132] In some embodiments, the first information is an RNTI used to scramble the first PEI.

[0133] In some embodiments, if the first PEI is scrambled using a first RNTI, all paging messages corresponding to the first PEI are RAN-initiated paging messages, and / or if the first PEI is scrambled using a second RNTI, the paging messages corresponding to the first PEI include CN-initiated paging messages.

[0134] In some embodiments, the first information is a DCI carrying the first PEI.

[0135] In some embodiments, if the DCI carrying the first PEI is a first DCI, all paging messages corresponding to the first PEI are RAN-initiated paging messages, and / or if the DCI carrying the first PEI is a second DCI, the paging messages corresponding to the first PEI include CN-initiated paging messages.

[0136] In some embodiments, if the first terminal device is in an RRC inactive state, the first terminal device reads the first DCI, and / or if the first terminal device is in an RRC idle state, the first terminal device reads the second DCI.

[0137] 7 is a structural schematic diagram of a wireless communication device provided by another embodiment of the present application. The wireless communication device 700 of FIG. 7 may be a base station. The wireless communication device 700 includes a communication module 710. The communication module 710 can be used to transmit a first PEI, where the first PEI corresponds to at least one PO, and the first PEI is associated with first information, and the first information is used to indicate that a paging message in the at least one PO is a RAN-initiated paging message or a CN-initiated paging message.

[0138] In some embodiments, the first information is used to indicate a first information area and a second information area in the first PEI, where the first information area corresponds to a paging message initiated by the CN and the second information area corresponds to a paging message initiated by the RAN.

[0139] In some embodiments, the first information includes second information and / or third information, the second information indicating the number of subgroups in the first information area and / or the number of subgroups in the second information area, and the third information indicating the order of the first information area and the second information area in the first PEI.

[0140] In some embodiments, if the first terminal device is in an RRC inactive state, in the first PEI, the sequence number of the subgroup of the first terminal device is as follows:

number

[0141] In some embodiments, the second information is determined based on a SIB message or is predefined by a protocol, and / or the third information is determined based on a SIB message or is predefined by a protocol.

[0142] In some embodiments, information indicating the subgroup to which the terminal device in the RRC inactive state belongs is located in the second information area.

[0143] In some embodiments, it is predefined by a protocol that the indication information of the subgroup to which the terminal device in the RRC inactive state belongs is located in the second information area.

[0144] In some embodiments, in the subgroups indicated by the first PEI, the terminal equipment in the RRC idle state and the terminal equipment in the RRC inactive state belong to different subgroups.

[0145] In some embodiments, the first information is used to indicate that all paging messages corresponding to the first PEI are paging messages initiated by the RAN, or the first information indicates that the paging messages corresponding to the first PEI include paging messages initiated by the CN.

[0146] In some embodiments, the first information is carried by at least one bit in the first PEI.

[0147] In some embodiments, if the value of the at least one bit is a first value, all paging messages corresponding to the first PEI are RAN-initiated paging messages, and / or if the value of the at least one bit is a second value, the paging messages corresponding to the first PEI include CN-initiated paging messages.

[0148] In some embodiments, the first information is an RNTI used to scramble the first PEI.

[0149] In some embodiments, if the first PEI is scrambled using a first RNTI, all paging messages corresponding to the first PEI are RAN-initiated paging messages, and / or if the first PEI is scrambled using a second RNTI, the paging messages corresponding to the first PEI include CN-initiated paging messages.

[0150] In some embodiments, the first information is a DCI carrying the first PEI.

[0151] In some embodiments, if the DCI carrying the first PEI is a first DCI, all paging messages corresponding to the first PEI are RAN-initiated paging messages, and / or if the DCI carrying the first PEI is a second DCI, the paging messages corresponding to the first PEI include CN-initiated paging messages.

[0152] In some embodiments, if the first terminal device is in an RRC inactive state, the first terminal device reads the first DCI, and / or if the first terminal device is in an RRC idle state, the first terminal device reads the second DCI.

[0153] 8 is a structural schematic diagram of a wireless communication device provided by another embodiment of the present application. The wireless communication device 800 in FIG. 8 may be a first terminal device. The wireless communication device 800 includes a communication module 810 and a detection module 820.

[0154] The communication module 810 can be used to receive a first PEI, where the first terminal device belongs to a first subgroup and a second subgroup, the first subgroup is used to receive paging messages initiated by a CN, and the second subgroup is used to receive paging messages initiated by a RAN, and the first PEI includes first indication information and second indication information, where the first indication information is indication information corresponding to the first subgroup, and the second indication information is indication information corresponding to the second subgroup.

[0155] The detection module 820 can be used to detect the first indication information and / or the second indication information.

[0156] In some embodiments, the first terminal device detecting the first indication information and / or the second indication information includes the first terminal device detecting the first indication information but not detecting the second indication information, or the first terminal device detecting the second indication information but not detecting the first indication information.

[0157] In some embodiments, the first terminal device detecting the first indication information but not the second indication information is predefined by a protocol or indicated by higher layer signaling, and / or the first terminal device detecting the second indication information but not the first indication information is predefined by a protocol or indicated by higher layer signaling.

[0158] In some embodiments, the first terminal device detecting the first instruction information and / or the second instruction information includes the first terminal device detecting a PO corresponding to the first PEI if at least one of the first instruction information and the second instruction information indicates that the first terminal device needs to detect a PO corresponding to the first PEI, or the first terminal device not detecting a PO corresponding to the first PEI if both the first instruction information and the second instruction information indicate that the first terminal device does not need to detect a PO corresponding to the first PEI, or the first terminal device not detecting a PO corresponding to the first PEI if at least one of the first instruction information and the second instruction information indicates that the first terminal device does not need to detect a PO corresponding to the first PEI.

[0159] 9 is a structural schematic diagram of a wireless communication device provided by another embodiment of the present application. The wireless communication device 900 of FIG. 9 may be a base station. The wireless communication device 900 may include a communication module 910 and a determination module 920.

[0160] The communication module 910 is used to send a first PEI, where the first terminal device belongs to a first subgroup and a second subgroup, the first subgroup is used to receive a paging message initiated by a CN, and the second subgroup is used to receive a paging message initiated by a RAN, the first PEI includes first indication information and second indication information, where the first indication information is indication information corresponding to the first subgroup, and the second indication information is indication information corresponding to the second subgroup; The determining module 920 is used for determining whether the first terminal device detects the first indication information and / or the second indication information.

[0161] In some embodiments, the first terminal device detecting the first indication information and / or the second indication information includes the first terminal device detecting the first indication information but not detecting the second indication information, or the first terminal device detecting the second indication information but not detecting the first indication information.

[0162] In some embodiments, the first terminal device detecting the first indication information but not the second indication information is predefined by a protocol or indicated by higher layer signaling, and / or the first terminal device detecting the second indication information but not the first indication information is predefined by a protocol or indicated by higher layer signaling.

[0163] In some embodiments, the first terminal device detecting the first instruction information and / or the second instruction information includes the first terminal device detecting a PO corresponding to the first PEI if at least one of the first instruction information and the second instruction information indicates that the first terminal device needs to detect a PO corresponding to the first PEI, or the first terminal device not detecting a PO corresponding to the first PEI if both the first instruction information and the second instruction information indicate that the first terminal device does not need to detect a PO corresponding to the first PEI, or the first terminal device not detecting a PO corresponding to the first PEI if at least one of the first instruction information and the second instruction information indicates that the first terminal device does not need to detect a PO corresponding to the first PEI.

[0164] FIG. 10 is a schematic structural diagram of an apparatus according to an embodiment of the present application. The dashed lines in FIG. 10 indicate that the unit or module is optional. The apparatus 1000 can be used to implement the method described in the above method embodiment. The apparatus 1000 can be a chip, a terminal device, or a network device.

[0165] The device 1000 may include one or more processors 1010. The processor 1010 can support the device 1000 in implementing the methods described in the method embodiments above. The processor 1010 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor may be another general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), other programmable logic devices, discrete gate and transistor logic devices, or discrete hardware components. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor.

[0166] The apparatus 1000 may further include one or more memories 1020. Programs may be stored in the memories 1020 and executed by the processor 1010 to cause the processor 1010 to perform the methods described in the method embodiments above. The memory 1020 may be separate from the processor 1010 or may be integrated into the processor 1010.

[0167] The apparatus 1000 may further include a transceiver 1030. The processor 1010 may communicate with other devices or chips via the transceiver 1030. For example, the processor 1010 may transmit and receive data to and from other devices or chips via the transceiver 1030.

[0168] The present invention further provides a computer-readable storage medium for storing a program, which can be applied in the wireless communication device provided by the present invention, and the program causes a computer to perform the method performed by the terminal device or the base station in each of the present invention.

[0169] The present embodiment further provides a computer program product, which includes a program that can be applied in a terminal device or a network device according to the present embodiment, and causes a computer to execute the method performed by the terminal device or the base station according to each embodiment.

[0170] The embodiments of the present application further provide a computer program, which can be applied in the terminal device or network device provided by the embodiments of the present application, and causes a computer to perform the method performed by the terminal device or base station in each embodiment of the present application.

[0171] As should be understood, in the embodiments of the present application, "B corresponding to A" means that B is associated with A and B can be determined based on A. However, as should be further understood, determining B based on A does not mean determining B based only on A, but B can also be determined based on A and / or other information.

[0172] It should be understood that the term "and / or" in this specification simply describes the relationship between related objects and indicates that three types of relationships can exist, for example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Also, the character " / " in this specification generally indicates that the related objects before and after it are in an "or" relationship.

[0173] It should be understood that in various embodiments of the present application, the magnitude of the sequence number of each of the above processes 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 embodiments of the present application.

[0174] In some embodiments provided herein, it should be understood that the disclosed systems, devices, and methods can be realized in other ways. For example, the device embodiments described above are merely schematic, and the division of the above units is merely a division of logical functions. In actual implementation, other division methods may be used. For example, multiple units or components may be combined or integrated into another system, or some features may be omitted or not implemented. Meanwhile, the couplings, direct couplings, or communication connections shown or discussed between each other may be indirect couplings or communication connections through several interfaces, devices, or units, which may be electrical, mechanical, or other types.

[0175] The above units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, i.e., they may be located in one place or distributed across multiple network units. Some or all of the units can be selected based on actual needs to achieve the objectives of the solution of this embodiment.

[0176] Furthermore, each functional unit in each embodiment of the present application may be integrated in one processing unit, each unit may exist physically alone, or two or more units may be integrated in one unit.

[0177] The above embodiments may be implemented entirely or partially by software, hardware, firmware, or any combination thereof. When implemented using software, they may be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer commands. When the computer program commands are loaded and executed on a computer, they generate entirely or partially the flows or functions described in the embodiments of the present application. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer commands may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer commands may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, optical fiber, and digital subscriber line (DSL)) or wireless (e.g., infrared, radio, microwave, etc.) methods. The computer-readable storage medium may be any available medium that can be read by a computer, or may be a data storage device such as a server or data center that includes one or more available media. The available medium may be a magnetic medium (e.g., a floppy disk, a hard disk, and a magnetic tape), an optical medium (e.g., a digital video disc (DVD)), or a semiconductor medium (e.g., a solid state disk (SSD)).

[0178] The above are only specific embodiments of the present application, but the scope of protection of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included within the scope of protection of the present application. Therefore, the scope of protection of the present application should be in accordance with the scope of protection of the claims. [Explanation of symbols]

[0179] 100 Communication Systems 110 Network Equipment 120 Terminal Equipment 600 Wireless communication device 610 Communication Module 700 Wireless communication device 710 Communication Module 800 Wireless Communication Device 810 Communication Module 820 Detection Module 900 Wireless communication device 910 Communication Module 920 Decision Module 1000 devices 1010 processor 1020 memory 1030 Transmitter / Receiver 1101 Terminal equipment 1102 Network equipment 1201 Terminal equipment 1202 Satellite 1203 Network equipment

Claims

1. 1. A wireless communication method, comprising: A wireless communication method comprising: a step in which a first terminal device receives a first paging pre-indication (PEI), the first PEI corresponding to at least one paging occasion (PO), and the first PEI is associated with first information, the first information being used to indicate that a paging message in the at least one PO is a paging message initiated by a radio access network (RAN) or a paging message initiated by a core network (CN).

2. 2. The method of claim 1, wherein the first information is used to indicate a first information field and a second information field in the first PEI, the first information field corresponding to a CN-initiated paging message, and the second information field corresponding to a RAN-initiated paging message.

3. 3. The method of claim 2, wherein the first information includes second information and / or third information, the second information indicating the number of subgroups in the first information area and / or the number of subgroups in the second information area, and the third information indicating the order of the first information area and the second information area in the first PEI.

4. If the first terminal device is in a radio resource control (RRC) inactive state, in the first PEI, the sequence number of the subgroup of the first terminal device is as follows: [Equation 1] Here, the UE ＩＤ represents the identifier of the first terminal device, N represents the number of paging frames in a paging cycle, Ns represents the number of paging occasions in one paging frame, and G １ represents the number of subgroups in the first information area, and G ２ 4. The method of claim 3, wherein: represents the number of subgroups in the second information area; floor represents rounding down; and mod represents finding the remainder.

5. The second information is determined based on a System Information Block (SIB) message or is predefined by a protocol; and / or 5. The method according to claim 3, wherein the third information is determined based on a SIB message or is predefined by a protocol.

6. The method according to any one of claims 2 to 5, characterized in that the indication information of the subgroup to which the terminal device in the RRC inactive state belongs is located in the second information area.

7. The method of claim 6, wherein it is predefined by a protocol that the indication information of the subgroup to which the terminal device in the RRC inactive state belongs is located in the second information area.

8. A method according to any one of claims 1 to 7, characterized in that, in the subgroups indicated by the first PEI, a terminal device in an RRC idle state and a terminal device in an RRC inactive state belong to different subgroups.

9. 2. The method of claim 1, wherein the first information is used to indicate that all paging messages corresponding to the first PEI are RAN-initiated paging messages, or the first information indicates that a CN-initiated paging message is included in the paging message corresponding to the first PEI.

10. 10. The method of claim 9, wherein the first information is carried by at least one bit in the first PEI.

11. If the value of the at least one bit is a first value, all paging messages corresponding to the first PEI are RAN-initiated paging messages; and / or 11. The method of claim 10, wherein if the value of the at least one bit is a second value, a CN-initiated paging message is included in the paging message corresponding to the first PEI.

12. The method of claim 9 , wherein the first information is a radio network temporary identifier (RNTI) used to scramble the first PEI.

13. If the first PEI is scrambled using a first RNTI, any paging message corresponding to the first PEI is a RAN-initiated paging message; and / or 13. The method of claim 12, wherein if the first PEI is scrambled using a second RNTI, a CN-initiated paging message is included in the paging message corresponding to the first PEI.

14. The method of claim 9 , wherein the first information is downlink control information (DCI) carrying the first PEI.

15. If the DCI carrying the first PEI is the first DCI, all paging messages corresponding to the first PEI are RAN-initiated paging messages; and / or 15. The method of claim 14, wherein if the DCI carrying the first PEI is a second DCI, a CN-initiated paging message is included in the paging message corresponding to the first PEI.

16. If the first terminal device is in an RRC inactive state, the first terminal device reads the first DCI; and / or 16. The method of claim 15, wherein if the first terminal device is in an RRC idle state, the first terminal device reads the second DCI.

17. 1. A wireless communication method, comprising: A wireless communication method comprising: a step in which a base station transmits a first paging pre-indication (PEI), the first PEI corresponding to at least one paging occasion (PO), and the first PEI is associated with first information, the first information being used to indicate that a paging message in the at least one PO is a radio access network (RAN) initiated paging message or a core network (CN) initiated paging message.

18. 18. The method of claim 17, wherein the first information is used to indicate a first information field and a second information field in the first PEI, the first information field corresponding to a CN-initiated paging message, and the second information field corresponding to a RAN-initiated paging message.

19. 19. The method of claim 18, wherein the first information includes second information and / or third information, the second information indicating the number of subgroups in the first information area and / or the number of subgroups in the second information area, and the third information indicating the order of the first information area and the second information area in the first PEI.

20. If the first terminal device is in a radio resource control (RRC) inactive state, in the first PEI, the sequence number of the subgroup of the first terminal device is as follows: [Equation 2] Here, the UE ＩＤ represents the identifier of the first terminal device, N represents the number of paging frames in a paging cycle, Ns represents the number of paging occasions in one paging frame, and G １ represents the number of subgroups in the first information area, and G ２ 20. The method of claim 19, wherein: represents the number of subgroups in the second information area; floor represents rounding down; and mod represents finding the remainder.

21. The second information is determined based on a System Information Block (SIB) message or is predefined by a protocol; and / or 21. The method of claim 19 or 20, wherein the third information is determined based on a SIB message or is predefined by a protocol.

22. The method according to any one of claims 18 to 21, characterized in that the indication information of the subgroup to which the terminal device in the RRC inactive state belongs is located in the second information area.

23. The method of claim 22, wherein it is predefined by a protocol that the indication information of the subgroup to which the terminal device in the RRC inactive state belongs is located in the second information area.

24. A method according to any one of claims 17 to 23, characterized in that, in the subgroups indicated by the first PEI, a terminal device in an RRC idle state and a terminal device in an RRC inactive state belong to different subgroups.

25. 18. The method of claim 17, wherein the first information is used to indicate that all paging messages corresponding to the first PEI are RAN-initiated paging messages, or the first information indicates that a CN-initiated paging message is included in the paging message corresponding to the first PEI.

26. 26. The method of claim 25, wherein the first information is carried by at least one bit in the first PEI.

27. If the value of the at least one bit is a first value, all paging messages corresponding to the first PEI are RAN-initiated paging messages; and / or 27. The method of claim 26, wherein if the value of the at least one bit is a second value, a CN-initiated paging message is included in the paging message corresponding to the first PEI.

28. 26. The method of claim 25, wherein the first information is a radio network temporary identifier (RNTI) used to scramble the first PEI.

29. If the first PEI is scrambled using a first RNTI, any paging message corresponding to the first PEI is a RAN-initiated paging message; and / or 29. The method of claim 28, wherein if the first PEI is scrambled using a second RNTI, a CN-initiated paging message is included in the paging message corresponding to the first PEI.

30. The method of claim 25, wherein the first information is downlink control information (DCI) carrying the first PEI.

31. If the DCI carrying the first PEI is the first DCI, all paging messages corresponding to the first PEI are RAN-initiated paging messages; and / or 31. The method of claim 30, wherein if the DCI carrying the first PEI is a second DCI, a CN-initiated paging message is included in the paging message corresponding to the first PEI.

32. If the first terminal device is in an RRC inactive state, the first terminal device reads the first DCI; and / or 32. The method of claim 31, wherein if the first terminal device is in an RRC idle state, the first terminal device reads the second DCI.

33. 1. A wireless communication method, comprising: a step of receiving a first paging pre-indication (PEI) by a first terminal device, wherein the first terminal device belongs to a first subgroup and a second subgroup, the first subgroup is used to receive paging messages initiated by a core network (CN), and the second subgroup is used to receive paging messages initiated by a radio access network (RAN), the first PEI includes first indication information and second indication information, the first indication information is indication information corresponding to the first subgroup, and the second indication information is indication information corresponding to the second subgroup; and detecting the first indication information and / or the second indication information by the first terminal device.

34. The step of the first terminal device detecting the first indication information and / or the second indication information includes: the first terminal device detecting the first indication information but not detecting the second indication information; or 34. The method of claim 33, comprising the step of the first terminal device detecting the second indication information but not the first indication information.

35. The step of the first terminal device detecting the first indication information but not detecting the second indication information is predefined by a protocol or indicated by higher layer signaling; and / or 35. The method of claim 34, wherein the step of the first terminal device detecting the second indication information but not the first indication information is predefined by a protocol or indicated by higher layer signaling.

36. The step of the first terminal device detecting the first indication information and / or the second indication information includes: If at least one of the first indication information and the second indication information indicates that the first terminal device needs to detect a paging occasion PO corresponding to the first PEI, the first terminal device detects a PO corresponding to the first PEI; or If both the first indication information and the second indication information indicate that the first terminal device does not need to detect a PO corresponding to the first PEI, the first terminal device does not detect a PO corresponding to the first PEI; or 34. The method of claim 33, further comprising the step of: if at least one of the first instruction information and the second instruction information indicates that the first terminal device does not need to detect a PO corresponding to the first PEI, the first terminal device not detecting a PO corresponding to the first PEI.

37. 1. A wireless communication method, comprising: a step of a base station sending a first paging pre-indication (PEI), wherein the first terminal device belongs to a first subgroup and a second subgroup, the first subgroup is used to receive paging messages initiated by a core network (CN), and the second subgroup is used to receive paging messages initiated by a radio access network (RAN), the first PEI includes first indication information and second indication information, the first indication information is indication information corresponding to the first subgroup, and the second indication information is indication information corresponding to the second subgroup; and determining, by the base station, that a first terminal device detects the first indication information and / or the second indication information.

38. The step of the first terminal device detecting the first indication information and / or the second indication information includes: the first terminal device detecting the first indication information but not detecting the second indication information; or 38. The method of claim 37, comprising the step of the first terminal device detecting the second indication information but not the first indication information.

39. The step of the first terminal device detecting the first indication information but not detecting the second indication information is predefined by a protocol or indicated by higher layer signaling; and / or 39. The method of claim 38, wherein the step of the first terminal device detecting the second indication information but not the first indication information is predefined by a protocol or indicated by higher layer signaling.

40. The step of the first terminal device detecting the first indication information and / or the second indication information includes: If at least one of the first indication information and the second indication information indicates that the first terminal device needs to detect a paging occasion PO corresponding to the first PEI, the first terminal device detects a PO corresponding to the first PEI; or If both the first indication information and the second indication information indicate that the first terminal device does not need to detect a PO corresponding to the first PEI, the first terminal device does not detect a PO corresponding to the first PEI; or 38. The method of claim 37, further comprising the step of: if at least one of the first instruction information and the second instruction information indicates that the first terminal device does not need to detect a PO corresponding to the first PEI, the first terminal device not detecting a PO corresponding to the first PEI.

41. A wireless communication device, the wireless communication device being a first terminal device, the wireless communication device comprising: A wireless communication device comprising: a communication module used to receive a first paging pre-indication (PEI), wherein the first PEI corresponds to at least one paging occasion (PO), and the first PEI is associated with first information, and the first information is used to indicate that a paging message in the at least one PO is a radio access network (RAN) initiated paging message or a core network (CN) initiated paging message.

42. 42. The device of claim 41, wherein the first information is used to indicate a first information field and a second information field in the first PEI, the first information field corresponding to a paging message initiated by a CN, and the second information field corresponding to a paging message initiated by a RAN.

43. 43. The device of claim 42, wherein the first information includes second information and / or third information, the second information indicating the number of subgroups in the first information area and / or the number of subgroups in the second information area, and the third information indicating the order of the first information area and the second information area in the first PEI.

44. If the first terminal device is in a radio resource control (RRC) inactive state, in the first PEI, the sequence number of the subgroup of the first terminal device is as follows: [Equation 3] Here, the UE ＩＤ represents the identifier of the first terminal device, N represents the number of paging frames in a paging cycle, Ns represents the number of paging occasions in one paging frame, and G １ represents the number of subgroups in the first information area, and G ２ 44. The apparatus of claim 43, wherein: represents the number of subgroups in the second information area; floor represents truncation; and mod represents finding the remainder.

45. The second information is determined based on a System Information Block (SIB) message or is predefined by a protocol; and / or 45. The apparatus according to claim 43 or 44, wherein the third information is determined based on a SIB message or is predefined by a protocol.

46. The device according to any one of claims 42 to 45, characterized in that indication information of a subgroup to which a terminal device in an RRC inactive state belongs is located in the second information area.

47. The apparatus of claim 46, wherein it is predefined by a protocol that the indication information of the subgroup to which the terminal device in the RRC inactive state belongs is located in the second information area.

48. The device according to any one of claims 41 to 47, characterized in that, in the subgroup indicated by the first PEI, a terminal device in an RRC idle state and a terminal device in an RRC inactive state belong to different subgroups.

49. The device of claim 41, wherein the first information is used to indicate that all paging messages corresponding to the first PEI are RAN-initiated paging messages, or the first information indicates that a CN-initiated paging message is included in the paging message corresponding to the first PEI.

50. 50. The apparatus of claim 49, wherein the first information is carried by at least one bit in the first PEI.

51. If the value of the at least one bit is a first value, all paging messages corresponding to the first PEI are RAN-initiated paging messages; and / or 51. The apparatus of claim 50, wherein if the value of the at least one bit is a second value, a CN-initiated paging message is included in the paging message corresponding to the first PEI.

52. 50. The apparatus of claim 49, wherein the first information is a radio network temporary identifier (RNTI) used to scramble the first PEI.

53. If the first PEI is scrambled using a first RNTI, any paging message corresponding to the first PEI is a RAN-initiated paging message; and / or 53. The apparatus of claim 52, wherein if the first PEI is scrambled using a second RNTI, a CN-initiated paging message is included in the paging message corresponding to the first PEI.

54. 50. The apparatus of claim 49, wherein the first information is downlink control information (DCI) carrying the first PEI.

55. If the DCI carrying the first PEI is the first DCI, all paging messages corresponding to the first PEI are RAN-initiated paging messages; and / or 55. The apparatus of claim 54, wherein if the DCI carrying the first PEI is a second DCI, a CN-initiated paging message is included in the paging message corresponding to the first PEI.

56. If the first terminal device is in an RRC inactive state, the first terminal device reads the first DCI; and / or 56. The apparatus of claim 55, wherein if the first terminal device is in an RRC idle state, the first terminal device reads the second DCI.

57. A wireless communication device, the wireless communication device being a base station, A wireless communication device comprising: a communication module used to send a first paging pre-indication (PEI), wherein the first PEI corresponds to at least one paging occasion (PO), and the first PEI is associated with first information, and the first information is used to indicate that a paging message in the at least one PO is a radio access network (RAN) initiated paging message or a core network (CN) initiated paging message.

58. 58. The device of claim 57, wherein the first information is used to indicate a first information field and a second information field in the first PEI, the first information field corresponding to a paging message initiated by a CN, and the second information field corresponding to a paging message initiated by a RAN.

59. 59. The device of claim 58, wherein the first information includes second information and / or third information, the second information indicating the number of subgroups in the first information area and / or the number of subgroups in the second information area, and the third information indicating the order of the first information area and the second information area in the first PEI.

60. If the first terminal device is in a radio resource control (RRC) inactive state, in the first PEI, the sequence number of the subgroup of the first terminal device is as follows: [Equation 4] Here, the UE ＩＤ represents the identifier of the first terminal device, N represents the number of paging frames in a paging cycle, Ns represents the number of paging occasions in one paging frame, and G １ represents the number of subgroups in the first information area, and G ２ 60. The apparatus of claim 59, wherein: represents the number of subgroups in the second information area; floor represents truncation; and mod represents finding the remainder.

61. The second information is determined based on a System Information Block (SIB) message or is predefined by a protocol; and / or 61. The apparatus of claim 59 or 60, wherein the third information is determined based on a SIB message or is predefined by a protocol.

62. The device according to any one of claims 58 to 61, characterized in that indication information of a subgroup to which a terminal device in an RRC inactive state belongs is located in the second information area.

63. The apparatus of claim 62, wherein it is predefined by a protocol that the indication information of the subgroup to which the terminal device in the RRC inactive state belongs is located in the second information area.

64. The device according to any one of claims 57 to 63, characterized in that, in the subgroup indicated by the first PEI, a terminal device in an RRC idle state and a terminal device in an RRC inactive state belong to different subgroups.

65. 58. The device of claim 57, wherein the first information is used to indicate that all paging messages corresponding to the first PEI are RAN-initiated paging messages, or the first information indicates that a CN-initiated paging message is included in the paging message corresponding to the first PEI.

66. 66. The apparatus of claim 65, wherein the first information is carried by at least one bit in the first PEI.

67. If the value of the at least one bit is a first value, all paging messages corresponding to the first PEI are RAN-initiated paging messages; and / or 67. The apparatus of claim 66, wherein if the value of the at least one bit is a second value, a CN-initiated paging message is included in the paging message corresponding to the first PEI.

68. 66. The apparatus of claim 65, wherein the first information is a Radio Network Temporary Identifier (RNTI) used to scramble the first PEI.

69. If the first PEI is scrambled using a first RNTI, any paging message corresponding to the first PEI is a RAN-initiated paging message; and / or 69. The apparatus of claim 68, wherein if the first PEI is scrambled using a second RNTI, a CN-initiated paging message is included in the paging message corresponding to the first PEI.

70. 66. The apparatus of claim 65, wherein the first information is downlink control information (DCI) carrying the first PEI.

71. If the DCI carrying the first PEI is the first DCI, all paging messages corresponding to the first PEI are RAN-initiated paging messages; and / or 71. The apparatus of claim 70, wherein if the DCI carrying the first PEI is a second DCI, a CN-initiated paging message is included in the paging message corresponding to the first PEI.

72. If the first terminal device is in an RRC inactive state, the first terminal device reads the first DCI; and / or 72. The apparatus of claim 71, wherein if the first terminal device is in an RRC idle state, the first terminal device reads the second DCI.

73. 1. A wireless communication device, the wireless communication device being a first terminal device, the device comprising: a communication module used to receive a first paging pre-indication (PEI), wherein the first terminal device belongs to a first subgroup and a second subgroup, the first subgroup is used to receive a paging message initiated by a core network (CN), and the second subgroup is used to receive a paging message initiated by a radio access network (RAN), the first PEI includes first indication information and second indication information, the first indication information is indication information corresponding to the first subgroup, and the second indication information is indication information corresponding to the second subgroup; a detection module used to detect the first indication information and / or the second indication information.

74. The first terminal device detecting the first indication information and / or the second indication information includes: The first terminal device detects the first indication information but does not detect the second indication information; or 74. The apparatus of claim 73, further comprising the first terminal device detecting the second indication information but not detecting the first indication information.

75. The first terminal device detecting the first indication information but not detecting the second indication information is predefined by a protocol or indicated by higher layer signaling; and / or 75. The apparatus of claim 74, wherein the first terminal device detecting the second indication information but not the first indication information is predefined by a protocol or indicated by higher layer signaling.

76. The first terminal device detecting the first indication information and / or the second indication information includes: If at least one of the first indication information and the second indication information indicates that the first terminal device needs to detect a paging occasion PO corresponding to the first PEI, the first terminal device detects a PO corresponding to the first PEI; or If the first indication information and the second indication information both indicate that the first terminal device does not need to detect a PO corresponding to the first PEI, the first terminal device does not detect a PO corresponding to the first PEI; or 74. The device of claim 73, further comprising: if at least one of the first instruction information and the second instruction information indicates that the first terminal device does not need to detect a PO corresponding to the first PEI, the first terminal device does not detect a PO corresponding to the first PEI.

77. A wireless communication device, the wireless communication device being a base station, a communication module used to send a first paging pre-indication (PEI), wherein the first terminal device belongs to a first subgroup and a second subgroup, the first subgroup is used to receive paging messages initiated by a core network (CN), and the second subgroup is used to receive paging messages initiated by a radio access network (RAN), the first PEI includes first indication information and second indication information, the first indication information is indication information corresponding to the first subgroup, and the second indication information is indication information corresponding to the second subgroup; a determination module adapted to determine that a first terminal device detects the first indication information and / or the second indication information.

78. The first terminal device detecting the first indication information and / or the second indication information includes: The first terminal device detects the first indication information but does not detect the second indication information; or 78. The apparatus of claim 77, further comprising the first terminal device detecting the second indication information but not the first indication information.

79. The first terminal device detecting the first indication information but not detecting the second indication information is predefined by a protocol or indicated by higher layer signaling; and / or 79. The apparatus of claim 78, wherein the first terminal device detecting the second indication information but not the first indication information is predefined by a protocol or indicated by higher layer signaling.

80. The first terminal device detecting the first indication information and / or the second indication information includes: If at least one of the first indication information and the second indication information indicates that the first terminal device needs to detect a PO corresponding to the first PEI, the first terminal device detects a PO corresponding to the first PEI; or If the first indication information and the second indication information both indicate that the first terminal device does not need to detect a PO corresponding to the first PEI, the first terminal device does not detect a PO corresponding to the first PEI; or The device of claim 77, further comprising: if at least one of the first instruction information and the second instruction information indicates that the first terminal device does not need to detect a PO corresponding to the first PEI, the first terminal device does not detect a PO corresponding to the first PEI.

81. A wireless communication device comprising: a memory; and a processor, wherein the memory is used to store a program; and the processor is used to execute the method of any one of claims 1 to 40 by calling the program in the memory.

82. An apparatus, comprising a processor, characterized in that the apparatus is adapted to carry out the method according to any one of claims 1 to 40 by calling a program from a memory.

83. A chip, comprising a processor, characterized in that it is used to call a program from a memory and cause a device to which the chip is attached to carry out the method of any one of claims 1 to 40.

84. A computer readable storage medium having stored thereon a program that causes a computer to carry out the method of any one of claims 1 to 40.

85. A computer program product comprising a program, said program causing a computer to carry out the method according to any one of claims 1 to 40.

86. A computer program, characterized in that the computer program causes a computer to carry out the method according to any one of claims 1 to 40.

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