Wireless communication method and device

Abstract

To provide wireless communication method and device.SOLUTION: A method includes a step of receiving a first PEI corresponding to at least one PO, and associated with 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 by a first terminal device.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] This application relates to the technical field of communications, and more specifically, to a wireless communication method and apparatus.

Background Art

[0002] When a terminal device is in the radio resource control (RRC) idle state, the terminal device only needs to detect paging initiated by the core network (CN). When the terminal device is in the RRC inactive state, the terminal device not only needs to detect paging initiated by the CN, but also needs to detect paging initiated by the radio access network (RAN). Since the terminal device cannot distinguish between paging initiated by the RAN and paging initiated by the CN, it causes the RRC idle state terminal device to receive unnecessary RAN paging, thereby causing unnecessary power consumption.

Summary of the Invention

Means for Solving the Problems

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

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

[0005] The second aspect provides a wireless communication method, which includes a step where a base station transmits 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 paging message initiated by the RAN or a paging message initiated by the CN.

[0006] The third aspect provides a wireless communication method, which includes a step where a first terminal device receives 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 the CN, the second subgroup is used to receive a paging message initiated by the 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 a step where the first terminal device detects the first indication information and / or the second indication information.

[0007] The fourth aspect provides a wireless communication method, which includes a step where 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 a paging message initiated by the CN, the second subgroup is used to receive a paging message initiated by the 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 a step where the base station determines that the first terminal device detects the first indication information and / or the second indication information.

[0008] The fifth aspect provides a wireless communication device, where the wireless communication device is a first terminal device, and the wireless communication device includes a communication module used to receive a first PEI. The first PEI corresponds to at least one PO, and the first PEI is associated with first information. The first information is used to indicate that the paging message in the at least one PO is a paging message initiated by the RAN or a paging message initiated by the CN.

[0009] The sixth aspect provides a wireless communication device, where the wireless communication device is a base station, and the wireless communication device includes a communication module used to transmit a first PEI. The first PEI corresponds to at least one PO, and the first PEI is associated with first information. The first information is used to indicate that the paging message in the at least one PO is a paging message initiated by the RAN or a paging message initiated by the CN.

[0010] The seventh aspect provides a wireless communication device, where the wireless communication device is a first terminal device, and the device includes a communication module used to receive a first PEI. 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 the CN, and the second subgroup is used to receive a paging message initiated by the 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. The device further includes a detection module used to detect the first indication information and / or the second indication information.

[0011] The eighth aspect provides a wireless communication device, where the wireless communication device is a base station, and the wireless communication device is a communication module used to transmit a first PEI. The first terminal device belongs to a first subgroup and a second subgroup. The first subgroup is used to receive a paging message started by the CN, and the second subgroup is used to receive a paging message started by the 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. The wireless communication device includes the communication module and a determination module used to determine that the first terminal device detects the first indication information and / or the second indication information.

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

[0013] The tenth aspect provides a device, including a processor used to execute the method according to any one of the first aspect to the fourth aspect by calling a program from a memory.

[0014] The eleventh aspect provides a chip, including a processor used to call a program from a memory and cause a device to which the chip is attached to execute the method according to any one of the first aspect to the fourth aspect.

[0015] The twelfth aspect provides a computer-readable storage medium, in which a program is stored, and the program causes a computer to execute the method according to any one of the first aspect to the fourth aspect.

[0016] Aspect 13 provides a computer program product that includes a program which causes a computer to execute the method described in any one of Aspects 1 to 4.

[0017] Aspect 14 provides a computer program that causes a computer to execute the method described in any one of Aspects 1 to 4.

Brief Description of the Drawings

[0018]

Figure 1A

Figure 1B

Figure 1C

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

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Figure 8

Figure 9

Figure 10

Modes for Carrying Out the Invention

[0019] Architecture of a communication system

[0020] The technical solution of the embodiment of the present application can be applied to various communication systems, such as global system of mobile communication (GSM) systems, code division multiple access (CDMA) systems, wideband code division multiple access (WCDMA) systems, general packet radio service (GPRS), long term evolution (LTE) systems, advanced long term evolution (LTE-A) systems, new radio (NR) systems, evolution systems of NR systems, LTE-based access to unlicensed spectrum (LTE-U) systems, NR-based access to unlicensed spectrum (NR-U) systems, NTN systems, universal mobile telecommunication system (UMTS), wireless local area networks (WLAN), wireless fidelity (WiFi), 5th-generation (5G) communication systems, or other communication systems, such as future communication systems, such as 6th-generation mobile communication systems, and further such as satellite communication systems, etc.

[0021] Generally, the number of connections supported by a conventional communication system is limited and easy to implement. However, with the development of communication technologies, mobile communication systems not only support conventional communications, 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, etc. 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, can also be applied to a dual connectivity (DC) scenario, and can further be applied to a standalone (SA) network construction scenario.

[0023] The communication system in the embodiments of the present application can be applied to unlicensed spectrum, where the unlicensed spectrum can also be regarded as shared spectrum, or the communication system in the embodiments of the present application can also be applied to licensed spectrum, where the licensed spectrum can also be regarded as dedicated spectrum.

[0024] The embodiments of the present application can be applied to an NTN system and can also be applied to a terrestrial networks (TN) system. By way of example and not limitation, the NTN system includes an NTN system based on NR and an NTN system based on IoT.

[0025] Examples of the present application describe each example in conjunction with network equipment and terminal equipment. Here, the 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 device, user terminal, terminal, wireless communication device, user agent, or user device, etc.

[0026] In an embodiment of the present application, the terminal equipment 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 a wireless communication function, a computing device, other processing devices connected to a wireless modem, in-vehicle equipment, wearable equipment, such as a terminal equipment in a next-generation communication system such as an NR network, or a terminal equipment in a future evolved public land mobile network (PLMN) network, etc.

[0027] In the embodiments of the present application, the terminal device may be a device that provides voice and / or data connectivity to users, and can be used to connect people, things, and machines. For example, it can be a handheld device with a wireless connection function, an in-vehicle device, etc. The terminal device in the embodiments of the present application may be a mobile phone, a tablet computer (Pad), a notebook computer, a palmtop computer, 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, etc. Optionally, the terminal device can be used to function as a base station. For example, the terminal device can function as a scheduling entity, which provides sidelink signals between terminal devices in V2X, D2D, etc. For example, a cellular phone and a vehicle communicate with each other using sidelink signals. There is no need for communication between a cellular phone and a smart home device to be relayed by a base station for communication signals.

[0028] In the embodiments of the present application, the terminal device may be deployed on land, including indoor and outdoor, handheld, wearable, or in-vehicle, may be deployed on water (such as ships, etc.), and may further be deployed in the air (such as on airplanes, balloons, and satellites, etc.).

[0029] In the embodiments of the present application, the terminal device may be a mobile phone, a pad, a computer with a wireless transceiver function, 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 smart grid, a wireless terminal device in transportation safety, a wireless terminal device in smart city, or a wireless terminal device in smart home, etc. The terminal device related to the embodiments of the present application may also be further referred to as a terminal, a user equipment (UE), an access terminal device, an in-vehicle terminal, an industrial control terminal, a UE unit, a UE station, a mobile station, a mobile station, a remote station, a remote terminal device, a mobile device, a UE terminal device, a wireless communication device, a UE agent, or a UE device, etc. The terminal device may be fixed or mobile.

[0030] By way of example and not limitation, in an embodiment of the present application, the terminal device may further be a wearable device. A wearable device may also be referred to as a wearable smart device. It is a general term for wearable devices developed by applying wearable technology to perform smart design for daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that can be worn directly on the body or integrated into the user's clothing or accessories. A wearable device is not just a hardware device, but realizes powerful functions through software support, data interaction, and cloud terminal interaction. Broadly speaking, wearable smart devices have complete functions, are large in size, and can realize complete or partial functions without relying on smartphones, such as smart watches or smart glasses, etc., and those that focus only on certain application functions and need to be used in cooperation with other devices such as smartphones, such as various smart bracelets for monitoring physical signs and smart necklaces, etc.

[0031] The network device in the embodiment of the present application may be a device used for communicating with a terminal device. The network device may also be referred to as an access network device or a wireless access network device. For example, the network device may be a base station. The network device in the embodiment of the present application may refer to a RAN node (or device) for accessing a terminal device to a wireless network. The base station broadly covers various names hereinafter, or can be replaced with the following names. For example, 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, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), and positioning node, etc. 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 further refer to the above-mentioned device, or a communication module, a modem, or a chip used for installation in the device. The base station may further be a mobile switching center, and a device responsible for the function of the base station in device-to-device (D2D), vehicle-to-vehicle / vehicle-to-everything (V2X), machine-to-machine (M2M) communication, a network-side device in a 6G network, and a device responsible for the function of the base station in a future communication system, etc.The base station can support networks of the same or different access technologies. The embodiments of the present application do not limit the specific technologies adopted by network devices and the specific forms of devices.

[0032] The base station may be fixed or mobile. For example, a helicopter or a drone may be arranged to function as a mobile base station, and one or more cells can move based on the position of the mobile base station. In other examples, a helicopter or a drone may be arranged to be used as a device for communicating with another base station.

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

[0034] The network device and the terminal device may be deployed on land, including indoors and outdoors, handheld or in-vehicle, may be deployed on water, or may even be deployed on airplanes, balloons, and satellites in the air. The embodiments of the present application do not limit the scenarios where there are network devices and terminal devices.

[0035] By way of example and not limitation, in the embodiments of the present application, the network device may have mobility characteristics. For example, the network device may be a moving device. In some embodiments of the present application, the network device may be a satellite or a 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 of the present application, the network device may further be a base station installed at locations such as land and water areas.

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

[0037] Exemplarily, FIG. 1A is a schematic architectural 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, and the network device 110 may be a device that communicates with a terminal device 120 (or a communication terminal and a terminal for short). The network device 110 can provide communication coverage for a specific geographical area and can communicate with terminal devices located within the coverage area.

[0038] FIG. 1A exemplarily shows one network device and two terminal devices. 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 individual network device. The embodiments of the present application do not limit this.

[0039] Exemplarily, FIG. 1B is an architectural schematic diagram of another communication system provided by the embodiments of the present application. As referred to in FIG. 1B, it 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 be further referred to as NTN. In the architecture of the communication system shown in FIG. 1B, the satellite 1102 may have the function of a base station, and direct communication can be performed between the terminal device 1101 and the satellite 1102. Under the architecture of the system, the satellite 1102 can be called a network device. In some embodiments of the present application, the communication system may include a plurality of network devices 1102, and other quantities of terminal devices may be included within the coverage range of each network device 1102, and the embodiments of the present application do not limit this.

[0040] Exemplarily, FIG. 1C is an architectural schematic diagram of another communication system provided by the embodiments of the present application. As referred to in FIG. 1C, it 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 be further referred to as NTN. In the architecture of the communication system shown in FIG. 1C, the satellite 1202 may not have the function of a base station, and relay by the satellite 1202 is required for communication between the terminal device 1201 and the base station 1203. Under the architecture of this system, the base station 1203 can be called a network device. In some embodiments of the present application, the communication system may include a plurality of network devices 1203, and other quantities of terminal devices may be included within the coverage range of each network device 1203, and the embodiments of the present application do not limit this.

[0041] As needs to be explained, FIGS. 1A to 1C only illustrate the system applied to the present application in an exemplary form. Of course, the methods shown in the embodiments of the present application can be further applied to other systems, such as 5G communication systems and LTE communication systems, etc., and the embodiments of the present application do not specifically limit this.

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

[0043] As should be understood, in the network / system in the embodiments of the present application, a device having a communication function can be called a communication device. Taking the communication system 100 shown in FIG. 1A as an example, the communication device may include a network device 110 and a terminal device 120 having a communication function. The network device 110 and the terminal device 120 may be the specific devices described above, and detailed descriptions are omitted here. The communication device may further include other devices in the communication system 100, such as other network entities such as a network controller and a mobility management entity, etc., and the embodiments of the present application do not limit this.

[0044] As should be understood, the "instruction" mentioned in the embodiments of the present application may be a direct instruction, an indirect instruction, or may further represent having a relevant relationship. Taking an example to explain, A instructing B may mean that A directly instructs B. For example, B can be obtained by A, which may mean that A indirectly instructs B. For example, A instructs C, and B can be obtained by C, or it may further mean that there is a relevant relationship between A and B.

[0045] In the description of the embodiments of the present application, the term "corresponding" may indicate that there is a direct or indirect correspondence relationship between the two, may indicate that there is a relationship between the two, or may be a relationship such as instruction and being instructed, and setting and being set.

[0046] "Setting" in the embodiments of the present application may include being set by at least one of system messages, RRC signaling, and media access control control element (MAC CE).

[0047] In some embodiments of the present application, "predefined" or "predetermined" can be realized by pre-saving other methods that can be used to indicate corresponding codes, tables, or correlation information in devices (including, for example, terminal devices and network devices), and the present application does not limit the specific implementation method thereof. For example, being predefined 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 communication field, and may include, for example, the LTE protocol, the NR protocol, and correlation protocols applied in future communication systems, and the present application does not limit this.

[0049] For ease of understanding, first, some knowledge of related technologies related to the embodiments of the present application is introduced. Hereinafter, the related technologies can be arbitrarily combined with the technical solutions of the embodiments of the present application as selectable solutions, and all of these belong to 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 state

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

[0052] A terminal device in the RRC idle state has no RRC context on the network side. That is, the 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 know whether the terminal device exists or not. A list of one group of tracking area identifiers (TAIs) is assigned to the terminal device. From the perspective of the core network, the connection between the RAN side and the core network is in a disconnected state. To reduce power consumption, the terminal device is in the hibernation state most of the time and thus cannot perform data transmission. In the downlink, a terminal device in the RRC idle state can be periodically activated to receive a paging message (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. If a transition from the RRC idle state to the RRC connected state is required, the RRC context can only be established for the terminal device and the network side through random access.

[0053] In the RRC connected state, the RRC context can be established, and all the parameters necessary for communication are known to the two entities (the terminal device and the network side). From the perspective of the core network, the terminal device is in a state of being connected to the core network. The cell to which the terminal device belongs is known, and a device identifier, namely the cell-radio network temporary identifier (C-RNTI), which is used to transmit signaling between the terminal device and the network, is set. Data can be transmitted in the RRC connected state. However, since the data stream is usually bursty, when there is no data stream transmission, the power consumption can be reduced by closing the receiving circuit of the terminal device, and the DRX technology is adopted. Since the RRC context is established at the base station in the connected state, leaving DRX and starting to receive / transmit data is relatively fast. In the connected state, the mobility can be controlled by the network side, that is, the terminal device provides measurements of adjacent cells to the network, and the network instructs the device to perform a handover. Uplink time synchronization may or may not exist. When data transmission is required, uplink synchronization can be established by using random access.

[0054] In LTE, only the RRC idle state and the RRC connected state are supported. The actual general situation is to save power by using the RRC idle state as the main sleep state of the terminal device. However, in some terminal devices, there is always frequent transmission of small data packets. Therefore, if it conforms to the LTE mode, there will be a large number of conversions from the RRC idle state to the RRC connected state. These conversions increase the signaling load and signaling delay. Therefore, in order to reduce the signaling load and latency, the RRC inactive state is introduced in NR.

[0055] In the RRC inactive state, the RRC contexts on the network side and the terminal device side are retained. From the perspective of the core network, the RAN side and the core network are in a connected state. Therefore, the speed of conversion from the inactive state to the connected state is very fast and core network signaling is not required. At the same time, the terminal device is permitted to perform hibernation in a manner similar to the RRC idle state and handle 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 positioning measurements mentioned above in the RRC inactive state. Performing positioning measurements in the RRC inactive state eliminates the need to switch the terminal device to the RRC connected state, thereby saving overhead and reducing latency.

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

[0057] Paging

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

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

[0060] The paging process may be initiated by the CN or by the RAN (or base station). Taking the case of the CN initiating, 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 send the paging message to all base stations within the tracking area (TA) where the terminal device is registered. After receiving the paging message sent by the core network device, the base station will decode the content therein, obtain the list of tracking area identities (TAIs) of the paged terminal device, and perform paging on the air interface within the cells belonging to the tracking areas in the list. Usually, to save the overhead of transmitting the paging message, after receiving the paging message sent by the core network device, the base station can combine the paging messages corresponding to terminal devices with the same PO into one paging message and finally transmit it to the correlated terminal device through the paging channel. After receiving the paging message, the terminal device in the RRC idle state can start the RRC connection establishment process to receive data or signaling.

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

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

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

[0064] As described above, the terminal device can calculate PF and PO based on the UE identifier (identity, ID). In some implementation manners, the system frame corresponding to the system frame number (system frame number, SFN) that satisfies the formula (SFN + PF_offset) mod T = (T div N) * (UE_ID mod N) can be regarded as one PF, and within PF, based on the formula i_s = floor(UE_ID / N) mod Ns, the index i_s of the PO corresponding to the terminal device can be calculated. 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 within the paging cycle, Ns represents the number of POs within one PF, and PF_offset represents the frame offset of PF.

[0065] As needs to be explained, for one terminal device, if the default DRX cycle is different from the DRX cycle set for the terminal device, then in that case, the cycle length of the relatively smaller DRX cycle among 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 a terminal device 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 needs to be explained, the above UE_ID can be calculated by the formula UE_ID = (5G - S - TMSI mod 1024), where 5G - S - TMSI represents the TMSI assigned by the communication system to the terminal device.

[0067] Also, in the NR technology, for a terminal device in the RRC idle state, the network device does not know which transmission beam should be used to send the paging message to the terminal device. To ensure that the terminal device can receive the paging message, the network device adopts a wave speed scanning method to send the paging message. To support the multi - beam transmission of the paging message, the PO can be defined as one group of PDCCH monitoring occasions, and different PDCCH monitoring occasions correspond to the paging indication information transmitted by different transmission beams. One PF may include one or more POs, or the start time point of the PO.

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

[0069] PDCCH monitoring occasions start numbering from the first PDCCH monitoring occasion of one PF and continue until the next PF. S consecutive PDCCH monitoring occasions constitute one PO, where S is the quantity of SSBs actually transmitted. The number of the starting PDCCH monitoring occasion of each PO can be determined by the parameter firstPDCCH-MonitoringOccasionOfPO. If this parameter exists, the number of the starting PDCCH monitoring occasion of the (i_s + 1)-th PO is the (i_s + 1)-th value of this parameter. If this parameter does not exist, all PDCCH monitoring occasions constitute one PO one by one in order, and the number of the starting PDCCH monitoring occasion of the (i_s + 1)-th PO is i_s * S.

[0070] As needs to be explained, the PDCCH monitoring occasions that make up one PO may be located within one PF or within two PFs. That is, the PDCCH monitoring occasions included in one PO can span across frames.

[0071] As can be understood based on the above introduction, the terminal device can adopt a method similar to the DRX mechanism, with the paging cycle as the cycle, and periodically monitor the PDCCH within the PO to obtain paging indication information. However, for some terminal devices, although they may not be paged within a relatively long period of time, they still need to monitor the PDCCH that may carry paging indication information by maintaining periodic activation. There is still room for further optimization of the energy-saving method for this type of terminal device.

[0072] PEI

[0073] In the PO set for the terminal device, paging messages can be transmitted in only about 10% of the POs, and there is no useful information for the terminal device in the remaining POs. That is, for the remaining 90% of the POs, the paging detection performed by the terminal device only wastes power. Before paging detection, some communication systems (such as NR Rel-17) support the transmission of PEI. The PEI can be carried in the DCI. The PEI can be used to indicate whether there is a paging message for the terminal device later. The terminal device can decide whether to perform paging message detection or continue to sleep in subsequent POs based on the PEI. The introduction of PEI can save the power consumption of the terminal device.

[0074] PEI issues instructions in units of subgroups (i.e., a group of terminal devices). For example, first, terminal devices sharing a PO can be divided into multiple subgroups. The PEI contains instruction information (or bits) corresponding to one or each of the multiple subgroups. The instruction information corresponding to an individual subgroup can be used to instruct whether the terminal devices within the subgroup should detect paging messages or continue to sleep in subsequent POs. Based on its own sequence number in a subgroup, a terminal device can find the corresponding instruction information in the PEI and then determine whether it is necessary to detect paging messages subsequently based on the instruction of the instruction information.

[0075] Based on the above-introduced concept, the embodiments of the present application will be described in detail below.

[0076] Example 1

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

[0078] Regarding the above problem, hereinafter, together with FIG. 4, Embodiment 1 provided by the present application will be described in detail.

[0079] FIG. 4 is a flowchart of a wireless communication method provided by Embodiment 1. The method 400 in FIG. 4 can be executed 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 the RRC idle state or a terminal device in the RRC inactive state.

[0080] As shown in FIG. 4, in step S410, the first terminal device receives a first PEI. The first PEI corresponds to at least one PO (for example, one group of POs). Alternatively, the first PEI is used to indicate whether a paging message of the first terminal device or a subgroup where the first terminal device is located is included in the at least one PO.

[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 its subgroup. For example, if the CN is selected to allocate subgroup information of the first terminal device based on the characteristics of the first terminal device, the sequence number of the subgroup of the first terminal device is provided by non-access stratum (NAS) signaling in the registration process of the first terminal device. Further, for example, if the CN is selected not to provide specific subgroup information, the sequence number of the subgroup can be calculated based on the UE_ID of the first terminal device, whereby it is randomized. After the first terminal device receives or derives the sequence number of its subgroup, the first terminal device can decrypt the number of subgroups in the PO from SIB-X. Thereafter, the first terminal device can decrypt the number of POs associated with one PEI from SIB-X. Thereafter, the first terminal device can determine the PEI resource based on PDCCH and the monitoring opportunity, and can determine the corresponding position of the subgroup in the PEI based on 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, and determining whether a paging message of the first terminal device is included in the PO corresponding to the first PEI.

[0082] The first PEI can be associated with first information. The first information can be used to determine (or indicate) that the paging message in the at least one PO is a paging message initiated by the RAN or a paging message initiated by the CN. There may be multiple implementation manners of the first information. For example, the first indication information may directly indicate the type of the paging message, or may indirectly indicate the type of the paging message by indicating other information. The first indication information can indicate one or more of the information that the paging message corresponding to the first PEI is CN-side paging, or RAN-side paging, or includes both CN-side paging and RAN-side paging at the same time. Alternatively, the first indication information can indicate one or more of the information that all the paging messages corresponding to the first PEI are paging messages initiated by the RAN, and the first information includes a paging message initiated by the CN in the paging message corresponding to the first PEI. In the following, in combination with Embodiments 1.1 to 1.4, the specific form and indication manner of the first information will be described in more detail with examples.

[0083] Embodiment 1.1

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

[0085] In some embodiments, the first information area and the second information area can be arranged before and after according to a certain order in the first PEI. For example, in the first PEI, the first information area may be located before the second information area. Further, for example, in the first PEI, the first information area may be located after the second information area. Of course, in some other embodiments, the first information area and the second information area may be arranged to intersect according to a certain rule in the first PEI.

[0086] In some embodiments, the first information may include the second information. The second information can indicate the number of subgroups in the first information area and / or the number of subgroups in the second information area. The subgroup in the first information area is a subgroup that receives and includes a paging message starting with CN. The subgroup in the second information area is a subgroup that receives a paging message starting with RAN.

[0087] In some embodiments, the second information is determined based on the SIB message. That is, the SIB message can be used to notify the first terminal device of the number of subgroups in the first information area and / or the number of subgroups in the second information area. Alternatively, the second information may be predefined by the protocol.

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

[0089] In some embodiments, the third information may be determined based on the SIB message. That is, the SIB message can be used to notify the first terminal device of the order of the first information area and the second information area in the first PEI. Alternatively, the third information may be predefined by the protocol. That is, the protocol can define the relationship between the first information area and the second information area within the first PEI.

[0090] In some embodiments, if the first terminal device is in the RRC inactive state, in the first PEI, the sequence number of the subgroup of the first terminal device (or the sequence number of bits, also called) is as follows:

Number

[0091] In some embodiments, if the first terminal device is in the RRC idle state, the first terminal device reads only the information in the first information area, that is, the first terminal device reads only the information in the information area corresponding to the CN side paging. By doing so, even if the RAN side paging is included in the PO corresponding to the first PEI, the terminal device in the RRC idle state will not be affected and activated to perform subsequent paging detection, thereby saving the power consumption of the terminal device.

[0092] If the terminal device is in the RRC inactive state, the terminal device may receive CN side paging and may also receive RAN side paging. When transmitting paging messages on the air interface, paging messages that overlap in the time domain can be combined by the RAN into one paging message and transmitted through the same paging channel. Therefore, in some embodiments, it can be defined (for example, predefined in the protocol) that the indication information of the subgroup to which the terminal device in the RRC inactive state belongs is located within the first information area of the first PEI (that is, the information area corresponding to the CN side paging). Alternatively, for the terminal device in the RRC inactive state, the subgroup indication information within the first information area of the first PEI is valid indication information, and the subgroup indication within the second information area of the first PEI is invalid indication information.

[0093] In some other embodiments, it can be specified (for example, predefined in the protocol) that the indication information of the subgroup to which the terminal device in the RRC inactive state belongs is located within the second information area of the first PEI (i.e., the information area corresponding to RAN-side paging). Or, for the terminal device in the RRC inactive state, the subgroup indication information within the second information area of the first PEI is valid indication information, and the subgroup indication within the first information area of the first PEI is invalid indication information. The advantages of doing so are mainly the following two points. First, a terminal device in the RRC inactive state is usually more likely to be paged than a terminal device in the RRC idle state. If a terminal device in the RRC idle state and a terminal device in the RRC inactive state are located in one subgroup, the probability of the terminal device in the RRC idle state being accidentally activated increases. The RAN-side paging is higher than the frequency of the paging message on the CN side. Indicating the RAN-side paging and the CN-side paging respectively can avoid activating a terminal device (i.e., a terminal device in the RRC idle state) that only receives the CN-side paging for the RAN-side paging. Second, when the terminal device is in the RRC inactive state, the terminal device may belong to two different subgroups, and therefore, it is possible to simultaneously include the indication information of the two subgroups in one PEI. The above solution corresponds to clarifying the position of the valid indication information in the PEI when there is indication information of two subgroups in the terminal device, and avoiding the situation where there is a misunderstanding between the base station and the terminal device.

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

[0095] Embodiment 1.2

[0096] The first information can be carried by at least one bit in the first PEI. For example, by newly adding one or more bits in the first PEI, the type of the paging message in the PO corresponding to the first PEI can be indicated. For example, if the value of the at least one bit is the first value, then all the paging messages corresponding to the first PEI are paging messages initiated by the RAN. Further, for example, if the value of the at least one bit is the second value, then the paging message initiated by the CN is included in the paging message corresponding to the first PEI.

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

[0098] Embodiment 1.3

[0099] The first piece of information is the RNTI used to scramble the first PEI. That is, by adopting different RNTIs to scramble the first PEI, the type of paging message in the PO corresponding to the first PEI can be indicated. For example, if the first PEI is scrambled using the first RNTI, all the paging messages corresponding to the first PEI are paging messages initiated by the RAN. Further, for example, if the first PEI is scrambled using the second RNTI, the paging messages initiated by the CN are included in the paging messages corresponding to the first PEI.

[0100] The advantages of the above implementation method of the first piece of information are as follows. In many 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 the RRC idle state, if it is grasped by the CRC check that all the 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] Embodiment 1.4

[0102] The first piece of information is the DCI carrying the first PEI. That is, by adopting different DCIs, the type of paging message in the PO corresponding to the first PEI can be indicated. For example, if the DCI carrying the first PEI is the first DCI, all the paging messages corresponding to the first PEI are paging messages initiated by the RAN. Further, for example, if the DCI carrying the first PEI is the second DCI, the paging messages initiated by the CN are included in the paging messages corresponding to the first PEI.

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

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

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

[0106] Embodiment 2

[0107] There may be a situation where the terminal device has the sequence numbers of two PEI subgroups in the PEI. For example, the terminal device can receive the paging sent by the CN and the paging sent by the RAN at the same time, and the paging sent by the CN and the paging sent by the RAN correspond to the sequence numbers of different PEI subgroups. Further, for example, there may be a situation where the paging sent by the CN and the paging sent by the RAN have different paging cycles, and the paging started by the CN and the paging started by the RAN overlap in some POs and correspond to the sequence numbers of different PEI subgroups. In such a situation, the terminal device may be in a situation where its understanding of the subgroup is ambiguous. For example, the terminal device does not know which subgroup's indication information it should respond to for subsequent processing.

[0108] In response to the above problem, hereinafter, in conjunction with FIG. 5, Embodiment 2 provided by the present application will be described in detail.

[0109] FIG. 5 is a flowchart of the wireless communication method provided by Embodiment 2. The method 500 in FIG. 5 can be executed 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 the RRC inactive state. The first terminal device can belong to a first subgroup and a second subgroup at the same time. The first subgroup is used to receive a paging message initiated by the CN. The second subgroup is used to receive a paging message initiated by the RAN.

[0110] As shown in FIG. 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 the 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 the 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 in FIG. 5 may further include a step in which the first terminal device receives or derives the sequence number of its subgroup. For example, if the CN is selected to assign subgroup information of the first terminal device based on the characteristics of the first terminal device, the sequence number of the subgroup of the first terminal device is provided by NAS signaling during the registration process of the first terminal device. Further, for example, if the CN is selected not to provide specific subgroup information, the sequence number of the subgroup can be calculated based on the UE_ID of the first terminal device, whereby it is randomized. After the first terminal device receives or derives the sequence number of its subgroup, the first terminal device can decrypt the number of subgroups in the PO from SIB-X. Thereafter, the first terminal device can decrypt the number of POs associated with one PEI from SIB-X. Thereafter, the first terminal device can determine the PEI resource based on PDCCH and the monitoring opportunity, and can determine the corresponding position of the subgroup in the PEI based on PDCCH. Based on the above steps, the first terminal device continues to execute step S510 in FIG. 5, whereby by obtaining the subgroup indication information from the first PEI, it can be determined whether the paging message of the first terminal device is included in the PO corresponding to the first PEI.

[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 detect the second indication information. Furthermore, in some embodiments, the fact that the first terminal device detects the first indication information but not the second indication information may be predefined by the protocol or may be indicated by upper layer signaling.

[0114] In some embodiments, the first terminal device may detect the second indication information but not detect the first indication information. Furthermore, in some embodiments, the fact that the first terminal device detects the second indication information but does not detect the first indication information may be predefined by a protocol or may be indicated by upper 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 indication information and the second indication information indicates that the first terminal device needs to detect the PO corresponding to the first PEI, the first terminal device detects the PO corresponding to the first PEI, and in this way, the scheduling complexity between the base station and the network side can be reduced.

[0117] As another example, if both the first indication information and the second indication information 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 indication information and the second indication information indicates 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.

[0119] Above, in combination with FIGS. 1 to 5, embodiments of the method of the present application have been described in detail. Below, in combination with FIGS. 6 to 10, embodiments of the apparatus of the present application will be described in detail. It should be understood that the description of the method embodiments corresponds to the description of the apparatus embodiments, and therefore, for parts not described in detail, reference can be made to the previous method embodiments.

[0120] FIG. 6 is a schematic structural diagram of a wireless communication device provided by one 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. The first PEI corresponds to at least one PO, and the first PEI is associated with first information. The first information is used to indicate that the paging message in the at least one PO is a paging message initiated by the RAN or a paging message initiated by the CN.

[0122] In some embodiments, the first information is used to indicate a first information area and a second information area in the first PEI. 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 indicates the number of subgroups in the first information area and / or the number of subgroups in the second information area. The third information indicates 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 the 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 the SIB message or is predefined by the protocol, and / or the third information is determined based on the SIB message or is predefined by the protocol.

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

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

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

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

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

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

[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, the paging messages corresponding to the first PEI are all paging messages initiated by the RAN, and / or if the first PEI is scrambled using a second RNTI, the paging messages corresponding to the first PEI include paging messages initiated by the CN.

[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, the paging messages corresponding to the first PEI are all paging messages initiated by the RAN, and / or if the DCI carrying the first PEI is a second DCI, the paging messages corresponding to the first PEI include paging messages initiated by the CN.

[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] FIG. 7 is a schematic structural diagram of a wireless communication device provided by another embodiment of the present application. The wireless communication device 700 in 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. The first PEI corresponds to at least one PO, and the first PEI is associated with first information. The first information is used to indicate that the paging message in the at least one PO is a paging message started by the RAN or a paging message started by the CN.

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

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

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

Equation

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

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

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

[0144] In some embodiments, in the subgroup indicated by the first PEI, the terminal devices in the RRC idle state and the terminal devices 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 initiated by the CN are included in the paging messages corresponding to the first PEI.

[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 the first value, all paging messages corresponding to the first PEI are paging messages initiated by the RAN, and / or if the value of the at least one bit is the second value, the paging messages initiated by the CN are included in the paging messages corresponding to the first PEI.

[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 the first RNTI, then all paging messages corresponding to the first PEI are paging messages initiated by the RAN, and / or if the first PEI is scrambled using the second RNTI, then the paging messages initiated by the CN are included in the paging messages corresponding to the first PEI.

[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 the first DCI, then all paging messages corresponding to the first PEI are paging messages initiated by the RAN, and / or if the DCI carrying the first PEI is the second DCI, then the paging messages initiated by the CN are included in the paging messages corresponding to the first PEI.

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

[0153] FIG. 8 is a structural schematic diagram of a wireless communication device provided by still 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 the first PEI. The first terminal device belongs to a first subgroup and a second subgroup. The first subgroup is used to receive a paging message started by the CN, and the second subgroup is used to receive a paging message started by the RAN. The first PEI includes first indication information and second indication information. The first indication information is the indication information corresponding to the first subgroup, and the second indication information is the 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 detecting the second indication information is predefined by a protocol or indicated by upper layer signaling, and / or the first terminal device detecting the second indication information but not detecting the first indication information is predefined by a protocol or indicated by upper layer signaling.

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

[0159] FIG. 9 is a schematic structural diagram of a wireless communication device provided by still another embodiment of the present application. The wireless communication device 900 in 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 transmit a first PEI. The first terminal device belongs to a first subgroup and a second subgroup. The first subgroup is used to receive a paging message started by the CN, and the second subgroup is used to receive a paging message started by the RAN. The first PEI includes first instruction information and second instruction information. The first instruction information is instruction information corresponding to the first subgroup, and the second instruction information is instruction information corresponding to the second subgroup. The determination module 920 is used to determine that the first terminal device detects the first instruction information and / or the second instruction information.

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

[0162] In some embodiments, the first terminal device detecting the first instruction information but not detecting the second instruction information is defined in advance by a protocol or indicated by upper layer signaling, and / or the first terminal device detecting the second instruction information but not detecting the first instruction information is defined in advance by a protocol or indicated by upper layer signaling.

[0163] In some embodiments, the first terminal device detecting the first instruction information and / or the second instruction information includes: 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 detecting the PO corresponding to the first PEI; or 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, the first terminal device not detecting the PO corresponding to the first PEI; or 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 the PO corresponding to the first PEI.

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

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

[0166] Device 1000 may further include one or more memories 1020. A program is stored in the memory 1020, and the program can be executed by the processor 1010 to cause the processor 1010 to execute the methods described in the embodiments of the above method. The memory 1020 may be independent of the processor 1010 or integrated with the processor 1010.

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

[0168] Embodiments of the present application further provide a computer-readable storage medium, which is used to store a program. The computer-readable storage medium can be applied in the wireless communication device provided by the embodiments of the present application, and the program causes a computer to execute the methods executed by the terminal device or the base station in each embodiment of the present application.

[0169] Embodiments of the present application further provide a computer program product. The computer program product includes a program. The computer program product can be applied in the terminal device or network device provided by the embodiments of the present application, and the program causes a computer to execute the methods executed by the terminal device or the base station in each embodiment of the present application.

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

[0171] It should be understood that 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, it should be further understood that determining B based on A does not mean determining B only based 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 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 are in an "or" relationship.

[0173] As should be understood, in various embodiments of the present application, the magnitude of the sequence numbers of the above processes does not mean the order of execution before and after, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

[0174] In some embodiments provided in the present application, as should be understood, the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely exemplary. For example, the division of the above units is only a division of logical functions. When actually implemented, other division methods may be adopted. For example, a plurality of units or components may be combined, or integrated into another system, or some features may be ignored, or not executed. On the other hand, the displayed or considered couplings, direct couplings, or communication connections between each other may be indirect couplings or communication connections by some interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0175] The above units described as separation members may or may not be physically separated. The members displayed as units may or may not be physical units, that is, they may be located in one place, or distributed in a plurality of network units. Based on actual needs, some or all of the units can be selected to achieve the purpose of the solution means of this embodiment.

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

[0177] In the above embodiments, they can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The above computer program product includes one or more computer commands. When the above computer program commands are loaded and executed on a computer, the flows or functions described in the embodiments of the present application are generated in whole or in part. The above computer may be a general-purpose computer, a dedicated computer, a computer network, or other programmable devices. The above computer commands may be stored in a computer-readable storage medium, or may be transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the above computer commands may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wired (such as coaxial cable, optical fiber, and digital subscriber line (DSL)) or wireless (such as infrared, wireless, and microwave, etc.) means. The above 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 and a data center that includes one or more available media integrated. The above available media may be magnetic media (such as floppy disks, hard disks, and magnetic tapes), optical media (such as digital video discs (DVDs)), or semiconductor media (such as solid state disks (SSDs)), etc.

[0178] The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present application should be included within the protection scope of the present application. Therefore, the protection scope of the present application should conform to the protection scope of the described patent claims.

Explanation of Reference Numerals

[0179] 100 Communication system 110 Network device 120 Terminal device 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 Device 1010 Processor 1020 Memory 1030 Transceiver 1101 Terminal device 1102 Network device 1201 Terminal device 1202 Satellite 1203 Network device

Claims

1. 1. A wireless communication method, comprising: A wireless communication method comprising: a step of receiving a first paging pre-indication (PEI) by a first terminal device, the first PEI corresponding to at least one paging occasion (PO) and the first PEI being 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.

2. 2. The method of claim 1, wherein the first information is used to indicate a first information area and a second information area in the first PEI, the first information area corresponding to a CN initiated paging message, and the second information area 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 a front-to-back 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: [0010] Here, the UE ＩＤ represents an 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 indication information of a subgroup to which a terminal device in an RRC inactive state belongs is located in the second information area.

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

8. The 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. The method according to claim 1, characterized in that 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 a paging message initiated by the CN 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, any paging message corresponding to the first PEI is a RAN initiated paging message; 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, further comprising: 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 according to claim 9 , wherein the first information is downlink control information (DCI) carrying the first PEI.

15. If the DCI carrying the first PEI is a first DCI, any paging message corresponding to the first PEI is a RAN-initiated paging message; and / or The method of claim 14, characterized in that 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 of a base station transmitting a first paging pre-indication (PEI), the first PEI corresponding to at least one paging occasion (PO), and the first PEI being 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 area and a second information area in the first PEI, the first information area corresponding to a CN initiated paging message, and the second information area corresponding to a RAN initiated paging message.

19. 20. 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 a front-to-back 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: [0025] Here, the UE ＩＤ represents an 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 according to 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 indication information of a subgroup to which a terminal device in an RRC inactive state belongs is located in the second information area.

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

24. The 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. The method of claim 17, characterized in that 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 a paging message initiated by the CN 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, any paging message corresponding to the first PEI is a RAN initiated paging message; 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 30. The method of claim 28, further comprising: 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 according to claim 25, wherein the first information is downlink control information (DCI) carrying the first PEI.

31. If the DCI carrying the first PEI is a first DCI, any paging message corresponding to the first PEI is a RAN-initiated paging message; 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, the first terminal device belonging to a first subgroup and a second subgroup, the first subgroup is used for receiving a paging message initiated by a core network CN, and the second subgroup is used for receiving 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; and a step of the first terminal device detecting the first indication information and / or the second indication information.

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 detecting 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 according to claim 34, wherein the step of the first terminal device detecting the second indication information but not detecting 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 indication information and the second indication 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, where the first terminal device belongs to a first subgroup and a second subgroup, the first subgroup is used for receiving a paging message initiated by a core network CN, and the second subgroup is used for receiving 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; 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 detecting 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 according to claim 38, wherein the step of the first terminal device detecting the second indication information but not detecting 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 indication information and the second indication 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 for receiving a first paging pre-indication PEI, the first PEI corresponding to at least one paging occasion PO, and the first PEI associated with first information, the first information used for indicating 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 apparatus of claim 41, wherein the first information is used to indicate a first information area and a second information area in the first PEI, the first information area corresponding to a CN initiated paging message, and the second information area corresponding to a RAN initiated paging message.

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 a front-to-back 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: [0030] Here, the UE ＩＤ represents an 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 indication information of a subgroup to which the terminal device in the RRC inactive state belongs is located in the second information area.

48. The apparatus according to any one of claims 41 to 47, 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.

49. The device of claim 41, characterized in that 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, any paging message corresponding to the first PEI is a RAN initiated paging message; 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 a first DCI, any paging message corresponding to the first PEI is a RAN-initiated paging message; 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 for transmitting a first paging pre-indication (PEI), the first PEI corresponding to at least one paging occasion (PO), and the first PEI associated with first information, the first information used for indicating 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 apparatus of claim 57, wherein the first information is used to indicate a first information area and a second information area in the first PEI, the first information area corresponding to a CN initiated paging message, and the second information area corresponding to a RAN initiated paging message.

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 a front-to-back 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: [0045] Here, the UE ＩＤ represents an 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 indication information of a 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 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.

65. The device of claim 57, characterized in that 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, any paging message corresponding to the first PEI is a RAN initiated paging message; 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 70. 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 a first DCI, any paging message corresponding to the first PEI is a RAN-initiated paging message; 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 for receiving a first paging pre-indication (PEI), where the first terminal device belongs to a first subgroup and a second subgroup, the first subgroup is used for receiving a paging message initiated by a core network (CN), and the second subgroup is used for receiving 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 adapted 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 detects the first indication information but does not detect the second indication information, which is predefined by a protocol or indicated by higher layer signaling; and / or 75. The apparatus of claim 74, wherein the first terminal device detects the second indication information but does not detect 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 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 The apparatus 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 for sending a first paging pre-indication (PEI), where the first terminal device belongs to a first subgroup and a second subgroup, the first subgroup is used for receiving a paging message initiated by a core network (CN), and the second subgroup is used for receiving 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 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 80. The apparatus of claim 77, further comprising the first terminal device detecting the second indication information but not detecting the first indication information.

79. The first terminal device detects the first indication information but does not detect the second indication information, which is predefined by a protocol or indicated by higher layer signaling; and / or 80. 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 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 The apparatus 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, the memory being used to store a program, and the processor being used to execute a method according to any one of claims 1 to 40 by calling up 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 to cause a device to which the chip is attached to carry out the method according to any one of claims 1 to 40.

84. A computer readable storage medium, characterized in that a program is stored on it, said program causing a computer to carry out the method according to 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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