Wireless communication method and device

Abstract

A wireless communication method and apparatus are provided, the method including: a first terminal device receiving a first PEI, the first PEI corresponding to at least one PO, and the first PEI associated with first information, the first information being used for indicating that a paging message in the at least one PO is a RAN-initiated paging message or a CN-initiated paging message.

Description

[Technical field]

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

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

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

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

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

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

[0007] A fourth aspect provides a wireless communication method, comprising: a step of a base station transmitting a first PEI, wherein 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 CN, and the second subgroup is used for receiving a paging message initiated by a 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 base station determining that the first terminal device detects the first indication information and / or the second indication information.

[0008] A fifth aspect provides a wireless communication device, the wireless communication device being a first terminal device, the wireless communication device including a communication module used for receiving a first PEI, the first PEI corresponding to at least one 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 RAN-initiated paging message or a CN-initiated paging message.

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

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

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

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

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

[0014] An 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 a method according to any one of the first to fourth aspects.

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

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

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

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

[0019] Communication System Architecture

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

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

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

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

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

[0025] The embodiments of the present application describe each embodiment in conjunction with network equipment and terminal equipment, where 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 equipment, user terminal, terminal, wireless communication equipment, user agent, or user device, etc.

[0026] In an embodiment of the present application, the terminal device may be a station (ST) in a WLAN, a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA) device, a handheld device with wireless communication capabilities, a computing device, other processing devices connected to a wireless modem, an in-vehicle device, a wearable device, a next generation communication system such as a terminal device in an NR network, or a terminal device in a public land mobile network (PLMN) network that will evolve in the future, etc.

[0027] In the embodiment of the present application, the terminal device may be a device that provides voice and / or data connectivity to a user and can be used to connect people, objects, and machines, such as a handheld device with wireless connection function and an in-vehicle device. The terminal device in the embodiment of the present application may be a mobile phone, a tablet computer, 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, a 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 car communicate with each other using sidelink signals, and a cellular phone and a smart home device communicate with each other without the need for a base station to relay communication signals.

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

[0029] In the embodiments of the present application, the terminal device may be a mobile phone, a tablet computer, a computer with a wireless transmission and reception 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 a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home, etc. The terminal device involved in the embodiments of the present application may 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 of limitation, in the embodiment of the present application, the terminal device may further be a wearable device. Wearable devices may also be called wearable smart devices, and are a collective term for wearable devices developed by applying wearable technology to smart design for daily wear, such as glasses, gloves, watches, clothing, and shoes. Wearable devices are portable devices that are directly worn or integrated into the user's clothing or accessories. Wearable devices are not just hardware devices, but achieve powerful functions through software support, data interaction, and cloud terminal interaction. In a broad sense, wearable smart devices include those that have complete functions, are large in size, and can achieve complete or partial functions without relying on a smartphone, such as smart watches or smart glasses, and those that focus only on certain types of application functions and need to be used in conjunction with other devices such as smartphones, such as various types of smart bracelets and smart necklaces that monitor physical signs.

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

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

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

[0034] The network device and the terminal device may be installed on land, including indoors, outdoors, handheld, or vehicle-mounted, on water, and even on airplanes, balloons, and satellites in the air. In the embodiment of the present application, the network device and the terminal device are not limited to a specific scenario.

[0035] By way of example and not limitation, in embodiments of the present application, the network equipment may have a mobile characteristic, for example, the network equipment may be a mobile equipment. In some embodiments of the present application, the network equipment 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 equipment may also be a base station installed in a location such as a land and a water body.

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

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

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

[0039] Illustratively, FIG. 1B is an architecture schematic diagram of another communication system provided by an embodiment of the present application. As shown in FIG. 1B, the communication system includes a terminal device 1101 and a satellite 1102, and the terminal device 1101 and the satellite 1102 can perform wireless communication. The network formed between the terminal device 1101 and the satellite 1102 may further be called NTN. In the communication system architecture shown in FIG. 1B, the satellite 1102 may have the function of a base station, and the terminal device 1101 and the satellite 1102 can directly communicate with each other. Under the system architecture, the satellite 1102 may be called a network device. In some embodiments of the present application, the communication system may include multiple network devices 1102, and may include other quantities of terminal devices within the coverage range of each network device 1102, and the embodiment of the present application is not limited thereto.

[0040] Illustratively, FIG. 1C is an architecture schematic diagram of another communication system provided by an embodiment of the present application. As shown in FIG. 1C, the communication system includes a terminal device 1201, a satellite 1202, and a base station 1203, and the terminal device 1201 and the satellite 1202 can perform wireless communication, and the satellite 1202 and the base station 1203 can communicate with each other. The network formed between the terminal device 1201, the satellite 1202, and the base station 1203 may further be called 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 the communication between the terminal device 1201 and the base station 1203 requires relaying by the satellite 1202. Under this system architecture, the base station 1203 may be called a network device. In some embodiments of the present application, the communication system may include multiple network devices 1203, and may include other quantities of terminal devices within the coverage range of each network device 1203, and the embodiments of the present application are not limited thereto.

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

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

[0043] It should be understood that in the network / system in the embodiment of the present application, the 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 description is omitted here, and 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, and the embodiment of the present application is not limited thereto.

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

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

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

[0047] In some embodiments of the present application, "predefined" or "preset" may be realized by pre-storing a corresponding code, table, or other method that can be used to indicate correlation information in a device (including, for example, a terminal device and a network device), and the present application does not limit the specific implementation method. For example, being 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 communications field, and may include, for example, an LTE protocol, an NR protocol, and correlation protocols applied in future communications systems, and the present application is not limited thereto.

[0049] In order to facilitate understanding, we first introduce some correlation technology knowledge involved in the embodiments of the present application. In the following, the correlation technology can be arbitrarily combined with the technical solutions of the embodiments of the present application as an optional solution, which all 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 Status

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

[0052] A terminal device in RRC idle state has no RRC context on the network side, i.e., the parameters required 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. The terminal device is assigned a group of tracking area identifier (TAI) list. 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 a hibernation state most of the time, and therefore cannot perform data transmission. In the downlink, the terminal device in the RRC idle state can be periodically woken up to receive paging messages (if any) from the network side. Mobility can be handled by the terminal device performing cell reselection. In the RRC idle state, the terminal device and the network side do not maintain uplink synchronization, and if a transition from the RRC idle state to the RRC connected state is required, an RRC context can only be established for the terminal device and the network side by random access.

[0053] In the RRC connected state, an RRC context can be established, and all parameters required for communication are known to the two entities (terminal device and 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, i.e., a cell-radio network temporary identifier (C-RNTI), used for transmitting signaling between the terminal device and the network is set. In the RRC connected state, data can be transmitted, but the data stream is usually bursty, so that when there is no data stream transmission, the power consumption can be reduced by closing the receiving circuit of the terminal device, and a DRX technique is adopted. Since an RRC context is established in the base station under the connected state, it is relatively fast to leave DRX and start receiving / transmitting data. In the connected state, mobility can be controlled by the network side, i.e., the terminal device provides measurements of neighboring cells to the network, and the network commands the device to switch. Upstream time synchronization may or may not exist, and when data transmission is required, upstream synchronization can be established by using random access.

[0054] In LTE, only the RRC idle state and the RRC connected state are supported. A common situation in practice is to use the RRC idle state as the main sleep state of the terminal device to save power. However, in some terminal devices, there are always frequent transmissions of small data packets, so if LTE is followed, there will be a large number of transitions from the RRC idle state to the RRC connected state. These transitions increase the signaling load and signaling delay. Therefore, 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 context between the network side and the terminal device side is maintained. From the perspective of the core network, the RAN side and the core network are in a connected state. Therefore, the speed of converting from the inactive state to the connected state is very fast, and no core network signaling is required. At the same time, the terminal device is allowed to perform hibernation in a manner similar to the RRC idle state, and handles mobility by cell reselection. Therefore, the RRC inactive state can be regarded as a mixture of idle and connected states. In addition, the terminal device can perform the above-mentioned positioning measurements in the RRC inactive state. There is no need to perform positioning measurements under the RRC inactive state and switch the terminal device to the RRC connected state, which can save overhead and reduce delay time.

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

[0057] Paging

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

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

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

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

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

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

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

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

[0066] As needs to be further 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 to the terminal equipment by the communication system.

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

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

[0069] The numbering of the PDCCH monitoring occasions starts from the first PDCCH monitoring occasion of one PF and continues to the next PF. S consecutive PDCCH monitoring occasions constitute one PO, where S is the number of SSBs actually transmitted. The number of the starting PDCCH monitoring occasion of each PO can be determined by the parameter firstPDCCH-MonitoringOccasionOfPO. If the 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 the parameter. If the parameter does not exist, all PDCCH monitoring occasions constitute a 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 should be explained, the PDCCH monitoring occasions constituting one PO may be located within one PF or may be located within two PFs, i.e., the PDCCH monitoring occasions included in one PO may span a frame.

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

[0072] P.E.I.

[0073] In the POs set for the terminal device, a paging message can be transmitted in only about 10% of the POs, but there is no useful information for the terminal device in the remaining POs. That is, the paging detection performed by the terminal device for the remaining 90% of the POs is nothing but a waste of power. Before the paging detection, some communication systems (e.g., NR Rel-17) support the transmission of a 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 in the future. The terminal device can determine whether to detect a paging message in the future PO or continue to sleep based on the PEI. The introduction of the PEI can save the power consumption of the terminal device.

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

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

[0076] Example 1

[0077] When the terminal equipment is in the RRC idle state, the terminal equipment only needs to detect paging initiated by the CN (hereinafter, paging initiated by the CN may be abbreviated as CN side paging), and when the terminal equipment is in the RRC inactive state, the terminal equipment not only needs to detect paging initiated by the CN, but also needs to detect paging initiated by the RAN (hereinafter, paging initiated by the RAN may be abbreviated as RAN side paging). As can be seen, the terminal equipment in the RRC inactive state is usually more likely to be paged than the terminal equipment in the RRC idle state. Since the terminal equipment cannot distinguish whether one paging is a paging initiated by the RAN or a paging initiated by the CN, it causes the terminal equipment in the RRC idle state to receive unnecessary RAN side paging, thereby causing unnecessary power consumption. Compared with the terminal equipment in the RRC inactive state, the amount of terminal equipment in the RRC idle state may be significantly larger. Therefore, if it is possible to prevent the terminal equipment 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 equipment in the RRC idle state.

[0078] To address the above problem, the following will describe in detail Example 1 provided by the present application in conjunction with FIG.

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

[0080] 4, in step S410, the first terminal device receives a first PEI, which corresponds to at least one PO (for example, a group of POs), or is used to indicate whether the paging message of the first terminal device or the subgroup in which 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 the subgroup. For example, if the CN chooses to allocate the subgroup information of the first terminal device based on the characteristics of the first terminal device, the CN provides the sequence number of the subgroup of the first terminal device by non-access stratum (NAS) signaling in the registration process of the first terminal device. Further, for example, if the CN chooses 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, and is thereby randomized. After the first terminal device receives or derives the sequence number of the subgroup, the first terminal device can decode the quantity of the subgroup in the PO from the SIB-X. Then, the first terminal device can decode the quantity of the PO associated with one PEI from the SIB-X. Then, the first terminal device can determine the PEI resource and monitoring opportunity based on the PDCCH, and determine the corresponding position of the subgroup in the PEI based on the PDCCH. Based on the above steps, the first terminal device continues to execute step S410 in FIG. 4, thereby obtaining subgroup indication information from the first PEI, so as to determine whether the paging message of the first terminal device is included in the PO corresponding to the first PEI.

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

[0083] Example 1.1

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

[0085] In some embodiments, the first information region and the second information region can be arranged in a certain order in the first PEI. For example, the first information region can be located before the second information region in the first PEI. For further example, the first information region can be located after the second information region in the first PEI. Of course, in some other embodiments, the first information region and the second information region can be arranged in a cross-shaped manner in the first PEI according to a certain rule.

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

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

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

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

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

number

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

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

[0093] In some other embodiments, it may be stipulated (e.g., predefined in a protocol) that the indication information of the subgroup to which the terminal device in the RRC inactive state belongs is located in the second information area of ​​the first PEI (i.e., the information area corresponding to the RAN side paging). Or, for the terminal device in the RRC inactive state, the subgroup indication information in the second information area of ​​the first PEI is valid indication information, and the subgroup indication in the first information area of ​​the first PEI is invalid indication information. There are mainly two advantages to doing so. First, the terminal device in the RRC inactive state is usually more likely to be paged than the terminal device in the RRC idle state. If the terminal device in the RRC idle state and the terminal device in the RRC inactive state are located in one subgroup, the probability that the terminal device in the RRC idle state is erroneously activated increases. The frequency of the RAN side paging is higher than the frequency of the CN side paging message, and respectively indicating the RAN side paging and the CN side paging can avoid that the RAN side paging has activated the terminal device that receives only the CN side paging (i.e., the terminal device in the RRC idle state). Secondly, when the terminal device is in an RRC inactive state, the terminal device may belong to two different subgroups, and thus may simultaneously include the indication information of the two subgroups in one PEI. The above solution corresponds to clarifying the location of the valid indication information in the PEI when the terminal device has the indication information of two subgroups, and avoids the situation of inconsistent understanding between the base station and the terminal device.

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

[0095] Example 1.2

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

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

[0098] Example 1.3

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

[0100] The advantages of the above-mentioned implementation method of the first information are as follows: In most situations, the terminal device knows the type of paging message in the PO corresponding to the first PEI after completing the CRC check. For a terminal device in RRC idle state, if it knows through the CRC check that all paging messages in the PO corresponding to the first PEI are RAN side paging, it does not need to analyze the information bits in the PEI.

[0101] Example 1.4

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

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

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

[0105] The above-mentioned implementation manner of the first information can reduce the detection complexity of the terminal device, because in most 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 most situations, the PEI indication is all 0, which means that the DCI carrying the PEI is all 0. For the DCI of all 0, the terminal device can detect it according to a sequence matching manner, and does not need to perform decoding, and the detection complexity is low.

[0106] Example 2

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

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

[0109] FIG. 5 is a flow chart of a wireless communication method provided by embodiment 2. The method 500 of FIG. 5 can be performed by a first terminal device and a base station. The first terminal device and the base station may be any type of terminal device and base station mentioned above. The first terminal device may be a terminal device in an RRC inactive state. The first terminal device can 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] Referring to 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 a first subgroup. That is, the first indication information can be used to indicate whether a paging message of the first subgroup is included in a PO corresponding to the first PEI. The second indication information is indication information corresponding to a second subgroup. That is, the second indication information can be used to indicate whether a paging message of the second subgroup is included in a PO corresponding to the first PEI.

[0111] Before step S510, the method of FIG. 5 may further include a step in which the first terminal device receives or derives the sequence number of the subgroup. For example, if the CN chooses to allocate the subgroup information of the first terminal device based on the characteristics of the first terminal device, the CN provides the sequence number of the subgroup of the first terminal device by NAS signaling during the registration process of the first terminal device. Further, for example, if the CN chooses 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, and is thereby randomized. After the first terminal device receives or derives the sequence number of the subgroup, the first terminal device can decode the quantity of the subgroup in the PO from the SIB-X. Then, the first terminal device can decode the quantity of the PO associated with one PEI from the SIB-X. Then, the first terminal device can determine the PEI resource and monitoring opportunity based on the PDCCH, and determine the corresponding position of the subgroup in the PEI based on the PDCCH. Based on the above steps, the first terminal device continues to execute step S510 in FIG. 5, thereby obtaining subgroup indication information from the first PEI, so as to determine whether the 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 first terminal device may detect the first indication information but not detect the second indication information, which may be predefined by a protocol or indicated by higher layer signaling.

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

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

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

[0117] As another example, if 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 does not detect a PO corresponding to the first PEI.

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

[0119] Above, the method embodiment of the present application is described in detail in conjunction with Figures 1 to 5, and below, the device embodiment of the present application is described in detail in conjunction with Figures 6 to 10. As should be understood, the description of the method embodiment corresponds to the description of the device embodiment, and therefore, the parts not described in detail can refer to the previous method embodiment.

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

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

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

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

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

number

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

number

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

[0160] The communication module 910 is used for sending a first PEI, and 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 CN, and the second subgroup is used for receiving a paging message initiated by a 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 determining module 920 is used for determining that the first terminal device detects the first indication information and / or the second indication information.

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

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

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

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

[0165] The device 1000 may include one or more processors 1010. The processor 1010 may support the device 1000 to implement the methods described in the above method embodiments. The processor 1010 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Or, 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, discrete gate and transistor logic devices, or discrete hardware components, etc. The general-purpose processor may be a microprocessor, or the processor may be any conventional processor, etc.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Claims

1. 1. A wireless communication method, comprising: A 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 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, the first PEI including a first information field and a second information field, the first information field corresponding to a CN initiated paging message and the second information field corresponding to a RAN initiated paging message, and an ID of a subgroup of the first terminal device is as follows: [0010] wherein UE ID represents an identifier of the first terminal device, N represents the number of paging frames in a DRX cycle, Ns represents the number of paging opportunities in one paging frame, G 1 represents a first number of subgroups in the first information area, G 2 represents a second number of subgroups in the second information area, floor represents truncation, and mod represents finding a remainder.

2. The method according to claim 1, characterized in that the first number of subgroups and the second number of subgroups are determined based on a system information block (SIB) message or are pre-defined by a protocol.

3. The method according to claim 1 , wherein indication information of a subgroup to which a terminal device in an RRC inactive state belongs is located in the second information area.

4. The method according to claim 3, 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.

5. The method according to any one of claims 1 to 4, 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.

6. 2. The method of claim 1, wherein the first information indicates 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.

7. 7. The method of claim 6, wherein the first information is carried by at least one bit in the first PEI.

8. When the value of the at least one bit is a first value, all paging messages corresponding to the first PEI are RAN-initiated paging messages; or 8. The method of claim 7, wherein when 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.

9. The method of claim 6 , wherein the first information is a Radio Network Temporary Identifier RNTI used to scramble the first PEI.

10. When the first PEI is scrambled using a first RNTI, all paging messages corresponding to the first PEI are RAN-initiated paging messages; or 10. The method of claim 9, wherein when the first PEI is scrambled with a second RNTI, a CN-initiated paging message is included in the paging message corresponding to the first PEI.

11. The method according to claim 6 , wherein the first information is downlink control information (DCI) carrying the first PEI.

12. When the DCI carrying the first PEI is a first DCI, any paging message corresponding to the first PEI is a RAN-initiated paging message; or The method of claim 11, wherein when 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.

13. When the first terminal device is in an RRC inactive state, the first terminal device reads the first DCI; or The method of claim 12, wherein the first terminal device reads the second DCI when the first terminal device is in an RRC idle state.

14. A terminal device, comprising: At least one processor; and one or more non-transitory computer-readable storage media coupled to the at least one processor and storing programming instructions for execution by the at least one processor, the programming instructions, when executed, causing the terminal device to: An operation of 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 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, the first PEI includes a first information field and a second information field, the first information field corresponds to a CN initiated paging message and the second information field corresponds to a RAN initiated paging message, and an ID of a subgroup of the terminal device is as follows: [0025] Here, UE ID represents an identifier of the terminal device, N represents the number of paging frames in a DRX cycle, Ns represents the number of paging occasions in one paging frame, G 1 represents a first number of subgroups in the first information area, G 2 represents a second number of subgroups in the second information area, floor represents truncation, and mod represents obtaining a remainder. A terminal device comprising:

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