Methods and apparatus for wireless communication

Abstract

A method and apparatus for wireless communication are provided. The method includes: a first terminal device receiving 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 to indicate that a paging message in the at least one PO is a paging message initiated by the RAN or a paging message initiated by the CN.

Description

Technical Field

[0001] This application relates to the field of communication technology, and more specifically, to a method and apparatus for wireless communication. Background Technology

[0002] When a terminal device is in Radio Resource Control (RRC) idle mode, it only needs to detect paging initiated by the core network (CN). However, when the terminal device is in RRC inactive mode, it needs to detect paging initiated by both the CN and the Radio Access Network (RAN). Because the terminal device cannot distinguish between RAN-initiated and CN-initiated paging, it receives unnecessary RAN paging in the RRC idle mode, resulting in unnecessary power consumption. Summary of the Invention

[0003] To address the aforementioned problems, this application provides a method and apparatus for wireless communication.

[0004] In a first aspect, a wireless communication method is provided, comprising: 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 the paging message in the at least one paging occasion (PO) is a paging message initiated by the RAN or a paging message initiated by the CN.

[0005] In a second aspect, a wireless communication method is provided, comprising: a base station 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 to indicate that the paging message in the at least one PO is a paging message initiated by the RAN or a paging message initiated by the CN.

[0006] Thirdly, a wireless communication method is provided, comprising: 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 to receive a paging message initiated by a CN, the second subgroup being used to receive a paging message initiated by a RAN, the first PEI including first indication information and second indication information, the first indication information being indication information corresponding to the first subgroup, and the second indication information being indication information corresponding to the second subgroup; the first terminal device detecting the first indication information and / or the second indication information.

[0007] Fourthly, a wireless communication method is provided, comprising: a base station transmitting a first PEI, wherein a first terminal device belongs to a first subgroup and a second subgroup, the first subgroup is used to receive a paging message initiated by a CN, 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, 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; the base station determining that the first terminal device detects the first indication information and / or the second indication information.

[0008] Fifthly, a wireless communication device is provided, the wireless communication device being a first terminal device, the wireless communication device comprising: a communication module, configured to receive 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 configured to indicate that the paging message in the at least one PO is a paging message initiated by the RAN or a paging message initiated by the CN.

[0009] In a sixth aspect, a wireless communication device is provided, the wireless communication device being a base station, the wireless communication device comprising: a communication module 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 to indicate that the paging message in the at least one PO is a paging message initiated by the RAN or a paging message initiated by the CN.

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

[0011] Eighthly, a wireless communication device is provided, the wireless communication device being a base station, the wireless communication device comprising: a communication module for transmitting a first PEI, wherein a first terminal device belongs to a first subgroup and a second subgroup, the first subgroup being used to receive a paging message initiated by a CN, and the second subgroup being used to receive a paging message initiated by a RAN, the first PEI including first indication information and second indication information, the first indication information being indication information corresponding to the first subgroup, and the second indication information being indication information corresponding to the second subgroup; and a determining module 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, including a memory and a processor, the memory for storing a program, and the processor for calling the program in the memory to perform the method as described in any one of the first to fourth aspects.

[0013] A tenth aspect provides an apparatus including a processor for calling a program from memory to perform the method as described in any one of the first to fourth aspects.

[0014] Eleventh aspect: A chip is provided, including a processor for calling a program from memory, causing a device on which the chip is mounted to perform the method as described in any one of the first to fourth aspects.

[0015] In a twelfth aspect, a computer-readable storage medium is provided having a program stored thereon that causes a computer to perform the method described in any one of the first to fourth aspects.

[0016] In a thirteenth aspect, a computer program product is provided, comprising a program that causes a computer to perform the method as described in any one of the first to fourth aspects.

[0017] Fourteenth aspect, a computer program is provided that causes a computer to perform the method as described in any one of the first to fourth aspects. Attached Figure Description

[0018] Figure 1 is a system architecture diagram of a communication system applicable to embodiments of this application.

[0019] Figure 2 This is a paging logic diagram.

[0020] Figure 3 This is a schematic diagram illustrating the relationship between the paging cycle, paging frames, and paging opportunities.

[0021] Figure 4 This is a flowchart illustrating a wireless communication method provided in one embodiment of this application.

[0022] Figure 5 This is a flowchart illustrating a wireless communication method provided in another embodiment of this application.

[0023] Figure 6 This is a schematic diagram of the structure of a wireless communication device provided in one embodiment of this application.

[0024] Figure 7 This is a schematic diagram of the structure of a wireless communication device provided in another embodiment of this application.

[0025] Figure 8This is a schematic diagram of the structure of a wireless communication device provided in another embodiment of this application.

[0026] Figure 9 This is a schematic diagram of the structure of a wireless communication device provided in another embodiment of this application.

[0027] Figure 10 This is a schematic diagram of the device provided in the embodiments of this application. Detailed Implementation

[0028] Communication system architecture

[0029] The technical solutions of this application embodiment can be applied to various communication systems, such as: Global System for Mobile Communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, New Radio (NR) system, evolution of NR system, LTE-based access to unlicensed spectrum (LTE-U) system, NR-based access to unlicensed spectrum (NR-U) system, NTN system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), and Wireless Fidelity (WF). Fidelity (WiFi), 5th-generation (5G) communication systems or other communication systems, such as future communication systems, such as 6th-generation mobile communication systems, or satellite communication systems.

[0030] Traditional communication systems typically support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communication but also, 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. The embodiments of this application can also be applied to these communication systems.

[0031] The communication system in this application embodiment can be applied to carrier aggregation (CA) scenarios, dual connectivity (DC) scenarios, and standalone (SA) network deployment scenarios.

[0032] The communication system in this application embodiment can be applied to unlicensed spectrum, which can also be considered as shared spectrum; or, the communication system in this application embodiment can also be applied to licensed spectrum, which can also be considered as dedicated spectrum.

[0033] The embodiments of this application can be applied to NTN systems as well as terrestrial networks (TN) systems. By way of example and not limitation, NTN systems include NR-based NTN systems and IoT-based NTN systems.

[0034] This application describes various embodiments in conjunction with network devices and terminal devices. The terminal device may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user equipment, etc.

[0035] In the embodiments of this 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 or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a next-generation communication system such as an NR network, or a terminal device in a future evolved public land mobile network (PLMN) network, etc.

[0036] In the embodiments of this application, the terminal device can 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 handheld devices with wireless connectivity, in-vehicle devices, etc. The terminal device in the embodiments of this application can be a mobile phone, tablet computer, laptop computer, PDA, mobile internet device (MID), wearable device, virtual reality (VR) device, augmented reality (AR) device, wireless terminal in industrial control, wireless terminal in self-driving, wireless terminal in remote medical surgery, wireless terminal in smart grid, wireless terminal in transportation safety, wireless terminal in smart city, wireless terminal in smart home, etc. Optionally, the terminal device can be used to act as a base station. For example, the terminal device can act as a scheduling entity, providing sidelink signals between terminal devices in V2X or D2D, etc. For example, cellular phones and cars communicate with each other using sidelink signals. Cellular phones and smart home devices can communicate without relaying communication signals through base stations.

[0037] In the embodiments of this application, the terminal device can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on water (such as ships); and it can also be deployed in the air (such as airplanes, balloons and satellites).

[0038] In the embodiments of this application, the terminal device may be a mobile phone, tablet computer, computer with wireless transceiver capabilities, virtual reality (VR) terminal device, augmented reality (AR) terminal device, wireless terminal device in industrial control, wireless terminal device in self-driving, wireless terminal device in remote medical care, wireless terminal device in smart grid, wireless terminal device in transportation safety, wireless terminal device in smart city, or wireless terminal device in smart home, etc. The terminal device involved in the embodiments of this application may also be referred to as a terminal, user equipment (UE), access terminal device, vehicle-mounted terminal, industrial control terminal, UE unit, UE station, mobile station, mobile station, remote station, remote terminal device, mobile device, UE terminal device, wireless communication device, UE agent, or UE device, etc. The terminal device may also be fixed or mobile.

[0039] By way of example and not limitation, in this embodiment, the terminal device can also be a wearable device. Wearable devices, also known as wearable smart devices, are a general term for devices that utilize wearable technology to intelligently design and develop everyday wearables, such as glasses, gloves, watches, clothing, and shoes. Wearable devices are portable devices that are worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not merely hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include those that are feature-rich, large in size, and can achieve complete or partial functions without relying on a smartphone, such as smartwatches or smart glasses, as well as those that focus on a specific type of application function and require the use of other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

[0040] The network device in this application embodiment can be a device for communicating with terminal devices. This network device can also be called an access network device or a wireless access network device, such as a base station. In this application embodiment, the network device can refer to a RAN node (or device) that connects the terminal device to the wireless network. A base station can broadly encompass, or be replaced by, various names including: NodeB, evolved NodeB (eNB), next-generation NodeB (gNB), relay station, access point, transmitting and receiving point (TRP), transmitting point (TP), master MeNB, auxiliary SeNB, multi-mode radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. A base station can be a macro base station, micro base station, relay node, donor node, or similar entities, or combinations thereof. A base station can also refer to a communication module, modem, or chip installed within the aforementioned equipment or apparatus. A base station can also be a mobile switching center, or a device that performs base station functions in device-to-device (D2D), vehicle-to-everything (V2X), and machine-to-machine (M2M) communications, a network-side device in a 6G network, or a device performing base station functions in future communication systems. Base stations can support networks using the same or different access technologies. The embodiments of this application do not limit the specific technologies or device forms used in the network equipment.

[0041] Base stations can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move depending on the location of the mobile base station. In other examples, a helicopter or drone can be configured as a device to communicate with another base station.

[0042] In some deployments, the network device in this application embodiment may refer to a CU or a DU, or the network device may include both a CU and a DU. The gNB may also include an AAU.

[0043] Network devices and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can also be deployed in the air on airplanes, balloons, and satellites. This application does not limit the scenario in which the network devices and terminal devices are located.

[0044] By way of example and not limitation, in the embodiments of this application, the network device may have mobility characteristics; for example, the network device may be a mobile device. In some embodiments of this application, the network device may be a satellite or a balloon 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 highly elliptical orbit (HEO) satellite, etc. In some embodiments of this application, the network device may also be a base station located on land, water, or other similar locations.

[0045] In this embodiment, the network device can provide services to a cell. The terminal device communicates with the network device through the transmission resources (e.g., frequency domain resources, or spectrum resources) used by the cell. The cell can be the cell corresponding to the network device (e.g., a base station). The cell can belong to a macro base station or to a base station corresponding to a small cell. The small cell can include: metro cell, micro cell, pico cell, femto cell, etc. These small cells have the characteristics of small coverage area and low transmission power, and are suitable for providing high-speed data transmission services.

[0046] For example, Figure 1A This is a schematic diagram of the architecture of a communication system provided in an embodiment of this application. Figure 1A As shown, the communication system 100 may include a network device 110, which may be a device that communicates with a terminal device 120 (or a communication terminal, terminal). The network device 110 can provide communication coverage for a specific geographical area and can communicate with terminal devices located within that coverage area.

[0047] Figure 1A An exemplary diagram shows a network device and two terminal devices. In some embodiments of this application, the communication system 100 may include multiple network devices and each network device may include other numbers of terminal devices within its coverage area. This application does not limit the scope of the embodiments.

[0048] For example, Figure 1BThis is a schematic diagram of the architecture of another communication system provided in an embodiment of this application. Please refer to [link / reference]. Figure 1B This includes terminal device 1101 and satellite 1102, which can communicate wirelessly. The network formed between terminal device 1101 and satellite 1102 can also be called an NTN. Figure 1B In the architecture of the communication system shown, satellite 1102 can function as a base station, and terminal device 1101 and satellite 1102 can communicate directly. In this system architecture, satellite 1102 can be referred to as a network device. In some embodiments of this application, the communication system may include multiple network devices 1102, and the coverage area of ​​each network device 1102 may include other numbers of terminal devices; this application does not limit this aspect.

[0049] For example, Figure 1C This is a schematic diagram of the architecture of another communication system provided in an embodiment of this application. Please refer to [link / reference]. Figure 1C The network includes terminal device 1201, satellite 1202, and base station 1203. Terminal device 1201 and satellite 1202 can communicate wirelessly, and satellite 1202 can communicate with base station 1203. The network formed by terminal device 1201, satellite 1202, and base station 1203 can also be called an NTN. Figure 1C In the architecture of the communication system shown, satellite 1202 may not function as a base station, and communication between terminal device 1201 and base station 1203 requires relay through satellite 1202. In this system architecture, base station 1203 can be referred to as a network device. In some embodiments of this application, the communication system may include multiple network devices 1203, and the coverage area of ​​each network device 1203 may include other numbers of terminal devices; this application does not limit this aspect.

[0050] It should be noted that, Figures 1A-1C This application is merely an example illustrating the system to which this application applies. Of course, the methods shown in the embodiments of this application can also be applied to other systems, such as 5G communication systems, LTE communication systems, etc. This application does not specifically limit these systems.

[0051] In some embodiments of this application, Figures 1A-1C The wireless communication system shown may also include other network entities such as a mobility management entity (MME) and an access and mobility management function (AMF), but this application does not limit this.

[0052] It should be understood that devices with communication functions in the network / system of this application embodiment can be referred to as communication devices. Figure 1A Taking the communication system 100 shown as an example, the communication equipment may include a network device 110 and a terminal device 120 with communication functions. The network device 110 and the terminal device 120 may be the specific devices described above, which will not be repeated here. The communication equipment may also include other devices in the communication system 100, such as network controllers, mobility management entities and other network entities. This application embodiment does not limit this.

[0053] It should be understood that the term "instruction" mentioned in the embodiments of this application can be a direct instruction, an indirect instruction, or an indication of a relationship. For example, A instructing B can mean that A directly instructs B, such as B being able to obtain information through A; it can also mean that A indirectly instructs B, such as A instructing C, so B can obtain information through C; or it can mean that there is a relationship between A and B.

[0054] In the description of the embodiments of this application, the term "correspondence" may indicate that there is a direct or indirect correspondence between two things, or that there is an association between two things, or that there is a relationship of instruction and being instructed, configuration and being configured, etc.

[0055] The “configuration” in this application embodiment may include configuration via at least one of system messages, RRC signaling, and media access control element (MAC CE).

[0056] In some embodiments of this application, "predefined" or "preset" can be implemented by pre-storing corresponding codes, tables, or other means that can be used to indicate relevant information in the device (e.g., including terminal devices and network devices). This application does not limit the specific implementation method. For example, "predefined" can refer to what is defined in the protocol.

[0057] In some embodiments of this application, the term "protocol" may refer to standard protocols in the field of communications, such as LTE protocols, NR protocols, and related protocols applied in future communication systems. This application does not limit the scope of the term.

[0058] To facilitate understanding, some related technical knowledge involved in the embodiments of this application is first introduced. The following related technologies are optional solutions and can be arbitrarily combined with the technical solutions of the embodiments of this application, all of which fall within the protection scope of the embodiments of this application. The embodiments of this application include at least some of the following contents.

[0059] RRC status

[0060] Some communication systems (such as NR systems) introduce three states for RRC: RRC Idle (RRC_IDLE state), RRC Inactive (RRC_INACTIVE state), and RRC Connected (RRC_CONNECTED state). These three states reflect the connection status between the terminal equipment, the base station, and the CN.

[0061] A terminal device in RRC idle state has no RRC context on the network side. This means the parameters necessary for communication between the network and the terminal device do not belong to a specific cell, and the network is unaware of the terminal device's existence. The terminal device is assigned a list of tracking area identifiers (TAIs). From the core network's perspective, the connection between the RAN and the core network is broken. To reduce power consumption, the terminal device remains in sleep mode most of the time and therefore cannot transmit data. In the downlink, a terminal device in RRC idle state can periodically wake up to receive paging messages from the network side (if any). Mobility can be handled by cell reselection by the terminal device. In RRC idle state, the terminal device and the network do not maintain uplink synchronization. To transition from RRC idle state to RRC connected state, random access is required, establishing an RRC context between the terminal device and the network.

[0062] In RRC connected state, an RRC context can be established, and all parameters required for communication are known to both entities (the terminal device and the network side). From the core network's perspective, the terminal device is connected to the core network. The cell to which the terminal device belongs is known, and a device identifier, namely the cell-radio network temporary identifier (C-RNTI), has been configured for signaling transmission between the terminal device and the network. Data can be transmitted in RRC connected state, but since data streams are typically bursty, power consumption can be reduced by shutting down the terminal device's receiving circuitry when there is no data transmission, employing DRX technology. Because an RRC context has been established in the base station in connected state, leaving the DRX and starting to receive / send data is relatively fast. In connected state, mobility can be controlled by the network side; that is, the terminal device provides neighbor cell measurements to the network, and the network commands the device to perform a handover. Uplink time synchronization may or may not be present; when data needs to be transmitted, uplink synchronization can be established using random access.

[0063] In LTE, only RRC idle and RRC connected states are supported. In practice, the RRC idle state is commonly used as the primary sleep state for terminal devices to save power. However, due to the frequent transmission of small data packets in some terminal devices, the LTE approach would result in numerous transitions from RRC idle to RRC connected states. These transitions increase signaling load and latency. Therefore, to reduce signaling load and latency, an RRC inactive state was introduced in NR.

[0064] In the RRC inactive state, the RRC context is maintained between the network side and the terminal device side. From the core network's perspective, the RAN side and the core network are in a connected state. Therefore, the transition from the inactive state to the connected state is fast and does not require core network signaling. Simultaneously, the terminal device is allowed to sleep in a manner similar to the RRC idle state, and mobility is handled through cell reselection. Therefore, the RRC inactive state can be considered a hybrid of idle and connected states. Furthermore, the terminal device can perform the aforementioned positioning measurements in the RRC inactive state. Performing positioning measurements in the RRC inactive state does not require the terminal device to switch to the RRC connected state, thus saving overhead and reducing latency.

[0065] As can be seen from the above introduction, a key difference between different RRC states lies in the mobility mechanism. Efficient mobility processing is a crucial part of any mobile communication system. For RRC idle and RRC inactive states, mobility is handled by the terminal device through cell reselection, while for RRC connected states, mobility is handled by the network side based on measurements taken by the terminal device.

[0066] Paging

[0067] For terminal devices in RRC idle or RRC inactive states, paging can be used to switch them to RRC connected state. The paging process can be triggered by the core network to send a paging request to terminal devices in RRC idle or RRC inactive states, or triggered by the access network to notify inactive terminal devices to initiate a connection recovery process, or to notify all terminal devices within the coverage of that access network to receive system information updates, or to notify all terminal devices within the coverage of that access network to receive alarm information sent by the Earthquake and Tsunami Warning System (ETWS) and the Commercial Mobile Alert System (CMAS).

[0068] Figure 2 This is a paging logic diagram. (From...) Figure 2As can be seen, the entire paging process maps from the logical channel to the transmission channel and finally to the physical channel. The demodulation reference signal (DMRS) can be used for demodulating uplink and downlink data.

[0069] The paging process can be initiated by the CN (Network Access Center) or the RAN (Radio Router) (or base station). Taking CN-initiated paging as an example, it can be initiated by the access and mobility management function (AMF) within the CN. If the paging message is initiated by the CN, the core network equipment will send the paging message to all base stations within the tracking area (TA) registered by the terminal equipment. After receiving the paging message from the core network equipment, the base station will interpret its contents to obtain a list of tracking area identities (TAIs) for the paged terminal equipment, and then perform air interface paging within the cells belonging to the tracking areas listed. Typically, to save on the overhead of transmitting paging messages, after receiving the paging message from the core network equipment, the base station can aggregate the paging messages corresponding to terminal equipment with the same PO (Position Address) into a single paging message, which is then transmitted to the relevant terminal equipment through the paging channel. After receiving the paging message, a terminal equipment in the RRC idle state can initiate an RRC connection establishment process to receive data or signaling.

[0070] The paging message is carried via the physical downlink shared channel (PDSCH). Before receiving the paging message, the terminal device needs to receive paging parameters via system messages and calculate the frame number of the paging frame (PF) and the point of origin (PO) containing the paging message based on its own UE_ID. Then, within the PO on the PF, the terminal device listens for paging indication information via the physical downlink control channel (PDCCH) scrambled by P-RNTI, and finally receives the paging message based on the paging indication information. It can be understood that this 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.

[0071] For example, the terminal device can detect the PDCCH within the PO to obtain downlink control information (DCI). The cyclic redundancy check (CRC) of the DCI is scrambled by P-RNTI. If the terminal device detects the DCI, it can receive the PDSCH at the resource location indicated by the DCI (such as a time-domain resource location and / or a frequency-domain resource location). The terminal device can use the temporary mobile subscriber identity (TMSI) (such as 5G-S-TMSI) to decode the PDSCH. If decoding is successful, it indicates that the terminal device has been paged, and the terminal device obtains the paging message from the PDSCH; if decoding fails, it indicates that the terminal device has not been paged.

[0072] The above PF represents the frame number of the system frame in which the paging message should appear, and PO represents the time when the paging message may appear. Figure 3 The position of the power field (PF) and the position of the point of interest (PO) within the PF are shown during the DRX cycle. Figure 3 As shown, the PF is located within the DRX cycle (or paging cycle) T. A paging cycle includes N PFs, each PF includes Ns POs, and each PO includes S time slots or synchronization signal blocks (SSBs). Here, N, Ns, and S are all positive integers. Multiple POs within a paging cycle may correspond to different terminal devices. However, for a given terminal device, within a paging cycle, it only needs to listen to its own assigned PO.

[0073] As mentioned above, the terminal device can calculate the PF and PO based on the UE identifier (ID). In some implementations, the system frame corresponding to the system frame number (SFN) satisfying the formula (SFN + PF_offset) mod T = (T div N) * (UE_ID mod N) can be used as a PF. Within the PF, the index (i_s) of the PO corresponding to the terminal device can be calculated according to the formula is = floor(UE_ID / N) mod Ns. Here, T represents the paging cycle length of the terminal device; UE_ID is used to identify the terminal device; N represents the number of PFs within the paging cycle; Ns represents the number of POs within a PF; and PF_offset represents the frame offset of the PF.

[0074] It should be noted that for a terminal device, if the default DRX period and the DRX period configured for that terminal device are different, then the shorter DRX period can be chosen as the period length of T. That is, T = min(T_UE, T_sib), where T_sib represents the period length of the default DRX period indicated in the system message, and T_UE represents the period length of the DRX period configured for the terminal device. Of course, for terminal devices that do not have T_UE configured, the period length of the default DRX period indicated in the system message can be used as the value of T, i.e., T = T_sib.

[0075] It should also be noted that the above UE_ID can be calculated using the formula UE_ID=(5G-S-TMSI mod 1024), where 5G-S-TMSI represents the TMSI assigned to the terminal device by the communication system.

[0076] Furthermore, in NR technology, for terminal devices in RRC idle state, the network device does not know which transmit beam to use to send paging messages. To ensure that the terminal device can receive the paging message, the network device uses beam scanning to send the paging message. To support multi-beam transmission of paging messages, a PO can be defined as a set of PDCCH monitoring occasions, with different PDCCH monitoring occasions corresponding to paging indication information sent through different transmit beams. A PF can include one or more POs or the start time of a PO.

[0077] Since each SSB index corresponds to a PDCCH monitoring occasion, and different SSB indices correspond to different beams, multiple PDCCH monitoring occasions in a single PO can be associated with the transmission beams corresponding to different SSB indices to support multi-beam transmission of paging messages. The messages transmitted on each SSB beam are identical. Typically, the SSBs required to complete one beam scan form an "SSB burst." PDCCH monitoring occasions are a series of time-domain locations determined by the paging search space.

[0078] PDCCH monitoring occasions are numbered starting from the first PDCCH monitoring occasion of a PF and continuing until the next PF. S consecutive PDCCH monitoring occasions constitute a PO, where S is the number of SSBs actually transmitted. The starting PDCCH monitoring occasion number for each PO can be determined by the parameter `firstPDCCH-MonitoringOccasionOfPO`. If this parameter exists, the starting PDCCH monitoring occasion number for the (i_s+1)th PO is the (i_s+1)th value of this parameter. If this parameter does not exist, all PDCCH monitoring occasions are sequentially grouped into POs, and the starting PDCCH monitoring occasion number for the (i_s+1)th PO is `i_s*S`.

[0079] It should be noted that the PDCCH monitoring occasions that make up a PO can be located within one PF or two PFs, that is, the PDCCH monitoring occasions contained in a PO can span across frames.

[0080] As described above, terminal devices employ a mechanism similar to DRX, periodically listening to the PDCCH within the PO to obtain paging indication information, based on the paging cycle. However, some terminal devices may not be paged for extended periods but still require periodic wake-ups to listen to the PDCCH, which may carry paging indication information. There is room for further optimization in energy-saving methods for these types of terminal devices.

[0081] PEI

[0082] Of the Page Requests (POs) configured for terminal devices, only about 10% will transmit paging messages; the remaining POs contain no information useful to the terminal device. In other words, for the remaining 90% of POs, the paging detection performed by the terminal device is simply a waste of power. Before paging detection, some communication systems (such as NR Rel-17) supported the transmission of a Page Message Indicator (PEI). This PEI can be carried in the DCI (Distributed Content Controller). The PEI can be used to indicate whether there will be a subsequent paging message from the terminal device. The terminal device can determine whether to perform paging message detection in subsequent POs or continue to sleep based on this PEI. The introduction of PEI can save power consumption for the terminal device.

[0083] PEI (Paging Information Indicator) provides indications in units of subgroups (i.e., a group of terminal devices). For example, terminal devices sharing a PO (Point of Purchase) can be divided into several subgroups. The PEI contains indication information (or bits) corresponding to one or more subgroups. The indication information for each subgroup can be used to indicate whether the terminal devices within that subgroup should check for paging messages in subsequent POs or remain dormant. Terminal devices can find the corresponding indication information in the PEI based on their subgroup number, and then determine whether subsequent paging message checking is necessary based on that indication.

[0084] Based on the above concepts, the embodiments of this application will be described in detail below.

[0085] Example 1

[0086] When a terminal device is in RRC idle state, it only needs to detect paging initiated by the CN (hereinafter, paging initiated by the CN will sometimes be referred to as CN-side paging). When the terminal device is in RRC inactive state, it needs to detect paging initiated by both the CN and RAN (hereinafter, paging initiated by the RAN will sometimes be referred to as RAN-side paging). Therefore, terminal devices in RRC inactive state are generally more likely to be paging than those in RRC idle state. Because terminal devices cannot distinguish whether a paging is initiated by the RAN or the CN, RRC idle state terminal devices receive unnecessary RAN-side paging, resulting in unnecessary power consumption. Compared to RRC inactive state terminal devices, the number of RRC idle state terminal devices can be quite large. Therefore, if unnecessary RAN-side paging can be avoided for RRC idle state terminal devices, significant power-saving gains for terminal devices in RRC idle state can be achieved.

[0087] To address the above issues, the following will be discussed in conjunction with... Figure 4 The present application will now describe in detail the first embodiment provided.

[0088] Figure 4 This is a flowchart illustrating a wireless communication method provided in Embodiment 1. Figure 4 Method 400 can be executed by a first terminal device and a base station. The first terminal device and base station can be any type of terminal device and base station mentioned above. The first terminal device can be a terminal device in the RRC idle state or a terminal device in the RRC inactive state.

[0089] See Figure 4In step S410, the first terminal device receives a first PEI. The first PEI corresponds to at least one PO (such as a group of POs). In other words, the first PEI is used to indicate whether the at least one PO contains a paging message for the first terminal device or the subgroup to which the first terminal device belongs.

[0090] Before step S410, Figure 4 The method may further include: the first terminal device receiving or deriving its subgroup number. For example, if the CN selects to allocate subgroup information for the first terminal device based on its characteristics, the subgroup number of the first terminal device is provided by non-access stratum (NAS) signaling during the registration process. Alternatively, if the CN chooses not to provide specific subgroup information, the subgroup number can be calculated based on the UE_ID of the first terminal device for randomization. After the first terminal device receives or derives its subgroup number, it can decode the number of subgroups in the PO from the SIB-X. Then, it can decode the number of POs associated with a PEI from the SIB-X. Then, the first terminal device can determine the PEI resources and listening timing 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 can continue to execute... Figure 4 In step S410, the indication information of the subgroup is obtained from the first PEI to determine whether the PO corresponding to the first PEI contains the paging message of the first terminal device.

[0091] The first PEI can be associated with first information. This first information can be used to determine (or indicate) whether the paging message in the at least one PO is a RAN-initiated paging message or a CN-initiated paging message. The first information can be implemented in various ways. For example, the first indication information can directly indicate the type of paging message, or it can indirectly indicate the type of paging message by indicating other information. The first indication information can indicate one or more of the following: the paging message corresponding to the first PEI is a CN-side paging, a RAN-side paging, or simultaneously includes both CN-side paging and RAN-side paging. Alternatively, the first indication information can indicate one or more of the following: all paging messages corresponding to the first PEI are RAN-initiated paging messages; the first information indicates that the paging message corresponding to the first PEI includes a CN-initiated paging message. The specific form and indication method of the first information will be illustrated in more detail below with reference to Embodiments 1.1 to 1.4.

[0092] Example 1.1

[0093] The first information can be used to determine or indicate the first information field and the second information field in the first PEI. The first information field corresponds to a paging message initiated by the CN; the second information field corresponds to a paging message initiated by the RAN. In other words, the indication information in the first information field is used to indicate whether the PO corresponding to the first PEI contains a paging message initiated by the CN; the indication information in the second information field is used to indicate whether the PO corresponding to the first PEI contains a paging message initiated by the RAN.

[0094] In some embodiments, the first information field and the second information field can be arranged sequentially in the first PEI. For example, in the first PEI, the first information field can precede the second information field. Alternatively, in the first PEI, the first information field can follow the second information field. Of course, in other embodiments, the first information field and the second information field can also be arranged in an alternating pattern in the first PEI according to certain rules.

[0095] In some embodiments, the first information may include second information. The second information may indicate the number of subgroups in the first information field and / or the number of subgroups in the second information field. The subgroups in the first information field are subgroups that receive paging messages initiated by the CN. The subgroups in the second information field are subgroups that receive paging messages initiated by the RAN.

[0096] In some embodiments, the second information is determined based on SIB messages. That is, SIB messages can be used to notify 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. Alternatively, the second information can be predefined by the protocol.

[0097] In some embodiments, the first information may include third information. The third information may indicate the order of the first information field and the second information field in the first PEI. For example, the third information may indicate that the first information field precedes the second information field; or, for instance, the third information may indicate that the first information field follows the second information field.

[0098] In some embodiments, the third information can be determined based on SIB messages. That is, SIB messages can be used to notify the first terminal device of the order of the first information field and the second information field in the first PEI. Alternatively, the third information can be predefined by the protocol. That is, the protocol can specify the order of the first information field and the second information field in the first PEI.

[0099] In some embodiments, if the first terminal device is in an RRC inactive state, then in the first PEI, the subgroup number (or bit number) of the first terminal device is:

[0100]

[0101] Among them, UEID This indicates the identifier of the first terminal device, N represents the number of paging frames in the paging cycle, Ns represents the number of paging opportunities in one paging frame, G1 represents the number of subgroups in the first information field, G2 represents the number of subgroups in the second information field, floor represents flooring, and mod represents modulo. The first bit in the first information field can be the bit corresponding to the subgroup with subgroup number 0. When the PEI subgroup number of the terminal device is passed through the UE... ID When determined, according to the formula in this embodiment, terminal devices can be evenly distributed in each subgroup, improving the PEI indication performance of the worst subgroup and improving the PEI indication efficiency.

[0102] In some embodiments, if the first terminal device is in RRC idle state, it only reads information in the first information field, that is, it only reads information in the information field corresponding to the CN-side paging. In this way, even if the PO corresponding to the first PEI contains RAN-side paging, the terminal device in RRC idle state will not be affected and will not be woken up to perform subsequent paging detection, thereby saving power consumption of the terminal device.

[0103] If the terminal device is in an RRC inactive state, it may receive paging from either the CN side or the RAN side. During air interface paging message transmission, overlapping paging messages in the time domain will be aggregated into a single paging message by the RAN and transmitted through the same paging channel. Therefore, in some embodiments, it can be specified (e.g., predefined in the protocol) that the indication information of the subgroup to which the RRC inactive terminal device belongs is located within the first information field of the first PEI (i.e., the information field corresponding to CN-side paging). Alternatively, for a terminal device in an RRC inactive state, the subgroup indication information within the first information field of the first PEI is valid, while the subgroup indication within the second information field of the first PEI is invalid.

[0104] In other embodiments, it can be specified (e.g., predefined in the protocol) that the indication information of the subgroup to which the RRC inactive terminal device belongs is located in the second information field of the first PEI (i.e., the information field corresponding to RAN-side paging). Alternatively, for RRC inactive terminal devices, the subgroup indication information in the second information field of the first PEI is valid, while the subgroup indication in the first information field of the first PEI is invalid. The advantages of this approach are mainly twofold. First, RRC inactive terminal devices are generally more likely to be paged than RRC idle terminal devices. If RRC idle terminal devices and RRC inactive terminal devices are in the same subgroup, the probability of the RRC idle terminal device being falsely woken up increases. RAN-side paging messages are more frequent than CN-side paging messages; indicating RAN-side paging and CN-side paging separately can prevent RAN-side paging from waking up terminal devices that only receive CN-side paging (i.e., RRC idle terminal devices). Second, when the terminal device is in the RRC inactive state, it may belong to two different subgroups. Therefore, a single PEI may contain indication information for both subgroups simultaneously. The above scheme effectively clarifies the location of the valid indication information in the PEI when the terminal device has indication information for two subgroups, avoiding inconsistencies in understanding between the base station and the terminal device.

[0105] In some embodiments, within the subgroup indicated by the first PEI, RRC idle terminal devices and RRC inactive terminal devices belong to different subgroups. RRC inactive terminal devices are generally more likely to be paged than RRC idle terminal devices. If a subgroup contains both RRC inactive and RRC idle terminal devices, the probability of the terminal devices in that subgroup being paged increases. The above embodiments assign RRC inactive and RRC idle terminal devices to different subgroups, thereby preventing paging of RRC inactive terminal devices from waking up RRC idle terminal devices.

[0106] Example 1.2

[0107] 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, then all paging messages corresponding to the first PEI are paging messages initiated by the RAN. Or, if the value of the at least one bit is a second value, then the paging messages corresponding to the first PEI include paging messages initiated by the CN.

[0108] As a concrete example, a new bit can be added to the first PEI. 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; when the value of the newly added bit is 0, it can indicate that the PO corresponding to the first PEI contains paging messages initiated by the CN.

[0109] Example 1.3

[0110] The first piece of information is the RNTI used to scramble the first PEI. That is, different RNTIs can be used to scramble the first PEI to indicate the type of paging message in the PO corresponding to that first PEI. For example, if the first PEI is scrambled with the first RNTI, then all paging messages corresponding to the first PEI are RAN-initiated paging messages. As another example, if the first PEI is scrambled with the second RNTI, then the paging messages corresponding to the first PEI include CN-initiated paging messages.

[0111] The advantage of the above implementation of the first information is that, in many cases, the terminal device knows the type of paging message in the PO corresponding to the first PEI after completing the CRC check. For terminal devices in the RRC idle state, if the CRC check shows that the paging messages in the PO corresponding to the first PEI are all RAN-side paging, then there is no need to parse the information bits in the PEI.

[0112] Example 1.4

[0113] The first piece of information is the DCI carrying the first PEI. That is, different DCIs can be used 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, then all paging messages corresponding to the first PEI are RAN-initiated paging messages. As another example, if the DCI carrying the first PEI is the second DCI, then the paging messages corresponding to the first PEI include CN-initiated paging messages.

[0114] In some embodiments, if the first terminal device is in an RRC inactive state, the first terminal device reads the first DCI.

[0115] In some embodiments, if the first terminal device is in an RRC idle state, the first terminal device reads the second DCI.

[0116] The above implementation of the first information can reduce the detection complexity of the terminal device. This is because, in most cases, the PO corresponding to the first PEI does not contain paging from the CN side or the RAN side, which means that in most cases the PEI indication is all zeros, i.e., the DCI carrying the PEI is all zeros. For DCIs with all zeros, the terminal device can perform detection by sequence matching without decoding, resulting in low detection complexity.

[0117] Example 2

[0118] Sometimes, a terminal device may have two PEI subgroup numbers in its PEI. For example, the terminal device may be able to simultaneously receive paging messages from both the CN and RAN, and these paging messages may correspond to different PEI subgroup numbers. Alternatively, the paging messages from the CN and RAN may have different paging periods, sometimes resulting in overlap on certain POs (Positions on POs) and corresponding to different PEI subgroup numbers. In such cases, the terminal device may experience ambiguity in its understanding of the subgroup. For instance, the terminal device may not know which subgroup's instruction information to follow for subsequent processing.

[0119] To address the above issues, the following will be discussed in conjunction with... Figure 5 The present application will now describe in detail Embodiment 2.

[0120] Figure 5 This is a flowchart illustrating a wireless communication method provided in Embodiment 2. Figure 5 Method 500 can be executed by a first terminal device and a base station. The first terminal device and base station can be any type of terminal device and base station mentioned above. The first terminal device can be a terminal device in an RRC inactive state. The first terminal device can belong to both a first subgroup and a second subgroup simultaneously. The first subgroup is used to receive paging messages initiated by the CN. The second subgroup is used to receive paging messages initiated by the RAN.

[0121] See Figure 5 In step S510, the first terminal device receives a first PEI. The first PEI may contain first indication information and second indication information. The first indication information is the indication information corresponding to the first subgroup. That is, the first indication information can be used to indicate whether the PO corresponding to the first PEI contains a paging message for the first subgroup. The second indication information is the indication information corresponding to the second subgroup. That is, the second indication information can be used to indicate whether the PO corresponding to the first PEI contains a paging message for the second subgroup.

[0122] Before step S510, Figure 5The method may further include: the first terminal device receiving or deriving its subgroup number. For example, if the CN selects to allocate subgroup information for the first terminal device based on its characteristics, the subgroup number of the first terminal device is provided by NAS signaling during the registration process. Alternatively, if the CN chooses not to provide specific subgroup information, the subgroup number can be calculated based on the UE_ID of the first terminal device for randomization. After the first terminal device receives or derives its subgroup number, it can decode the number of subgroups in the PO from the SIB-X. Then, it can decode the number of POs associated with a PEI from the SIB-X. Then, it can determine the PEI resources and listening timing 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 can continue to execute... Figure 5 In step S510, the indication information of the subgroup is obtained from the first PEI to determine whether the PO corresponding to the first PEI contains the paging message of the first terminal device.

[0123] In step S520, the first terminal device detects the first indication information and / or the second indication information.

[0124] In some embodiments, the first terminal device may detect the first indication information but not the second indication information. Further, in some embodiments, the first terminal device's detection of the first indication information but not the second indication information may be predefined by the protocol or indicated by higher-layer signaling.

[0125] In some embodiments, the first terminal device may detect the second indication information without detecting the first indication information. Further, in some embodiments, the first terminal device detecting the second indication information while not detecting the first indication information may be predefined by the protocol or indicated by higher-layer signaling.

[0126] In some embodiments, the first terminal device may detect first indication information and second indication information.

[0127] As an example, if at least one of the first indication information and the second indication information indicates that the first terminal device needs to detect the PO corresponding to the first PEI, then the first terminal device detects the PO corresponding to the first PEI, which can reduce the complexity of base station and network-side scheduling.

[0128] As another example, if both the first indication information and the second indication information indicate that the first terminal device does not need to detect the PO corresponding to the first PEI, then the first terminal device does not detect the PO corresponding to the first PEI.

[0129] As another example, if at least one of the first indication information and the second indication information indicates that the first terminal device does not need to detect the PO corresponding to the first PEI, then the first terminal device does not detect the PO corresponding to the first PEI.

[0130] The above text, in conjunction with Figures 1 to 12, shows... Figure 5 The method embodiments of this application are described in detail below, in conjunction with... Figures 6 to 10 The present application provides a detailed description of the apparatus embodiments. It should be understood that the descriptions of the method embodiments correspond to the descriptions of the apparatus embodiments; therefore, any parts not described in detail can be found in the foregoing method embodiments.

[0131] Figure 6 This is a schematic diagram of the structure of a wireless communication device provided in one embodiment of this application. Figure 6 The device 600 is a first terminal device. The wireless communication device 600 may include a communication module 610.

[0132] The communication module 610 can be used to receive a first PEI, which corresponds to at least one PO, and the first PEI is associated with first information, which is used to indicate whether the paging message in the at least one PO is a paging message initiated by the RAN or a paging message initiated by the CN.

[0133] In some embodiments, the first information is used to indicate a first information field and a second information field in the first PEI, wherein the first information field corresponds to a paging message initiated by the CN and the second information field corresponds to a paging message initiated by the RAN.

[0134] In some embodiments, the first information includes second information and / or third information, wherein the second information indicates the number of subgroups in the first information field and / or the number of subgroups in the second information field, and the third information indicates the order of the first information field and the second information field in the first PEI.

[0135] In some embodiments, if the first terminal device is in an RRC inactive state, then in the first PEI, the subgroup number of the first terminal device is:

[0136]

[0137] Among them, UE ID The identifier of the first terminal device is represented by N, the number of paging frames in the paging cycle is represented by Ns, the number of paging opportunities in one paging frame is represented by G1, the number of subgroups in the first information field is represented by G2, the number of subgroups in the second information field is represented by floor, and mod represents modulo.

[0138] In some embodiments, the second information is determined based on SIB messages or predefined by the protocol; and / or the third information is determined based on SIB messages or predefined by the protocol.

[0139] In some embodiments, the indication information of the subgroup to which the RRC-inactive terminal device belongs is located in the second information field.

[0140] In some embodiments, the indication information of the subgroup to which the RRC-inactive terminal device belongs is located in the second information field and is predefined by the protocol.

[0141] In some embodiments, in the subgroup indicated by the first PEI, the terminal device in the RRC idle state and the terminal device in the RRC inactive state belong to different subgroups.

[0142] 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.

[0143] In some embodiments, the first information is carried by at least one bit in the first PEI.

[0144] In some embodiments, if the value of the at least one bit is a first value, then the paging messages corresponding to the first PEI are all paging messages initiated by the RAN; and / or if the value of the at least one bit is a second value, then the paging messages corresponding to the first PEI include paging messages initiated by the CN.

[0145] In some embodiments, the first information is an RNTI used to scramble the first PEI.

[0146] In some embodiments, if the first PEI is scrambled using the first RNTI, then the paging messages corresponding to the first PEI are all paging messages initiated by the RAN; and / or if the first PEI is scrambled using the second RNTI, then the paging messages corresponding to the first PEI include paging messages initiated by the CN.

[0147] In some embodiments, the first information is a DCI carrying the first PEI.

[0148] In some embodiments, if the DCI carrying the first PEI is a first DCI, then all paging messages corresponding to the first PEI are paging messages initiated by the RAN; and / or if the DCI carrying the first PEI is a second DCI, then the paging messages corresponding to the first PEI include paging messages initiated by the CN.

[0149] 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.

[0150] Figure 7 This is a schematic diagram of the structure of a wireless communication device provided in another embodiment of this application. Figure 7 The wireless communication device 700 can be a base station. The wireless communication device 700 includes a communication module 710. The communication module 710 can be used to transmit a first PEI, the first PEI corresponding to at least one PO, and the first PEI is associated with first information, the first information indicating whether the paging message in the at least one PO is a paging message initiated by the RAN or a paging message initiated by the CN.

[0151] In some embodiments, the first information is used to indicate a first information field and a second information field in the first PEI, wherein the first information field corresponds to a paging message initiated by the CN and the second information field corresponds to a paging message initiated by the RAN.

[0152] In some embodiments, the first information includes second information and / or third information, wherein the second information indicates the number of subgroups in the first information field and / or the number of subgroups in the second information field, and the third information indicates the order of the first information field and the second information field in the first PEI.

[0153] In some embodiments, if the first terminal device is in an RRC inactive state, then in the first PEI, the subgroup number of the first terminal device is:

[0154]

[0155] Among them, UE ID The identifier of the first terminal device is represented by N, the number of paging frames in the paging cycle is represented by Ns, the number of paging opportunities in one paging frame is represented by G1, the number of subgroups in the first information field is represented by G2, the number of subgroups in the second information field is represented by floor, and mod represents modulo.

[0156] In some embodiments, the second information is determined based on SIB messages or predefined by the protocol; and / or the third information is determined based on SIB messages or predefined by the protocol.

[0157] In some embodiments, the indication information of the subgroup to which the RRC-inactive terminal device belongs is located in the second information field.

[0158] In some embodiments, the indication information of the subgroup to which the RRC-inactive terminal device belongs is located in the second information field and is predefined by the protocol.

[0159] In some embodiments, in the subgroup indicated by the first PEI, the terminal device in the RRC idle state and the terminal device in the RRC inactive state belong to different subgroups.

[0160] 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.

[0161] In some embodiments, the first information is carried by at least one bit in the first PEI.

[0162] In some embodiments, if the value of the at least one bit is a first value, then the paging messages corresponding to the first PEI are all paging messages initiated by the RAN; and / or if the value of the at least one bit is a second value, then the paging messages corresponding to the first PEI include paging messages initiated by the CN.

[0163] In some embodiments, the first information is an RNTI used to scramble the first PEI.

[0164] In some embodiments, if the first PEI is scrambled using the first RNTI, then the paging messages corresponding to the first PEI are all paging messages initiated by the RAN; and / or if the first PEI is scrambled using the second RNTI, then the paging messages corresponding to the first PEI include paging messages initiated by the CN.

[0165] In some embodiments, the first information is a DCI carrying the first PEI.

[0166] In some embodiments, if the DCI carrying the first PEI is a first DCI, then all paging messages corresponding to the first PEI are paging messages initiated by the RAN; and / or if the DCI carrying the first PEI is a second DCI, then the paging messages corresponding to the first PEI include paging messages initiated by the CN.

[0167] 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.

[0168] Figure 8 This is a schematic diagram of the structure of a wireless communication device provided in another embodiment of this application. Figure 8The wireless communication device 800 can be a first terminal device. The wireless communication device 800 includes a communication module 810 and a detection module 820.

[0169] The communication module 810 can be used to receive a first PEI. The first terminal device belongs to a first subgroup and a second subgroup. The first subgroup is used to receive paging messages initiated by the CN, and the second subgroup is used to receive paging messages initiated by the RAN. The first PEI includes first indication information and second indication information. The first indication information is the indication information corresponding to the first subgroup, and the second indication information is the indication information corresponding to the second subgroup.

[0170] The detection module 820 can be used to detect the first indication information and / or the second indication information.

[0171] 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.

[0172] In some embodiments, the first terminal device detects the first indication information but does not detect that the second indication information is predefined by the protocol or indicated by higher-layer signaling; and / or the first terminal device detects the second indication information but does not detect that the first indication information is predefined by the protocol or indicated by higher-layer signaling.

[0173] In some embodiments, the first terminal device detecting the first indication information and / or the second indication information includes: if at least one of the first indication information and the second indication information indicates that the first terminal device needs to detect the PO corresponding to the first PEI, then the first terminal device detects the PO corresponding to the first PEI; or, if both the first indication information and the second indication information indicate that the first terminal device does not need to detect the PO corresponding to the first PEI, then the first terminal device does not detect the PO corresponding to the first PEI; or, if at least one of the first indication information and the second indication information indicates that the first terminal device does not need to detect the PO corresponding to the first PEI, then the first terminal device does not detect the PO corresponding to the first PEI.

[0174] Figure 9 This is a schematic diagram of the structure of a wireless communication device provided in another embodiment of this application. Figure 9 The wireless communication device 900 can be a base station. The wireless communication device 900 can include a communication module 910 and a determination module 920.

[0175] The communication module 910 is used to send a first PEI. The first terminal device belongs to a first subgroup and a second subgroup. The first subgroup is used to receive paging messages initiated by the CN, and the second subgroup is used to receive paging messages initiated by the RAN. The first PEI includes first indication information and second indication information. The first indication information is the indication information corresponding to the first subgroup, and the second indication information is the indication information corresponding to the second subgroup.

[0176] The determination module 920 is used to determine whether the first terminal device detects the first indication information and / or the second indication information.

[0177] 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.

[0178] In some embodiments, the first terminal device detects the first indication information but does not detect that the second indication information is predefined by the protocol or indicated by higher-layer signaling; and / or the first terminal device detects the second indication information but does not detect that the first indication information is predefined by the protocol or indicated by higher-layer signaling.

[0179] In some embodiments, the first terminal device detecting the first indication information and / or the second indication information includes: if at least one of the first indication information and the second indication information indicates that the first terminal device needs to detect the PO corresponding to the first PEI, then the first terminal device detects the PO corresponding to the first PEI; or, if both the first indication information and the second indication information indicate that the first terminal device does not need to detect the PO corresponding to the first PEI, then the first terminal device does not detect the PO corresponding to the first PEI; or, if at least one of the first indication information and the second indication information indicates that the first terminal device does not need to detect the PO corresponding to the first PEI, then the first terminal device does not detect the PO corresponding to the first PEI.

[0180] Figure 10 This is a schematic structural diagram of the device according to an embodiment of this application. Figure 10 The dashed lines indicate that the unit or module is optional. The device 1000 can be used to implement the methods described in the above method embodiments. The device 1000 can be a chip, a terminal device, or a network device.

[0181] Apparatus 1000 may include one or more processors 1010. The processor 1010 may support apparatus 1000 in implementing the methods described in the preceding 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). Alternatively, the processor may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0182] The apparatus 1000 may further include one or more memories 1020. The memories 1020 store a program that can be executed by the processor 1010, causing the processor 1010 to perform the methods described in the preceding method embodiments. The memories 1020 may be independent of the processor 1010 or integrated within the processor 1010.

[0183] The device 1000 may also include a transceiver 1030. The processor 1010 can communicate with other devices or chips via the transceiver 1030. For example, the processor 1010 can send and receive data with other devices or chips via the transceiver 1030.

[0184] This application also provides a computer-readable storage medium for storing a program. This computer-readable storage medium can be applied to the wireless communication device provided in this application, and the program causes a computer to execute the methods performed by a terminal device or base station in various embodiments of this application.

[0185] This application also provides a computer program product. The computer program product includes a program. This computer program product can be applied to a terminal device or network device provided in this application embodiment, and the program causes a computer to execute the methods performed by the terminal device or base station in various embodiments of this application.

[0186] This application also provides a computer program. This computer program can be applied to the terminal device or network device provided in this application, and the computer program causes the computer to execute the methods performed by the terminal device or base station in various embodiments of this application.

[0187] It should be understood that in the embodiments of this application, "B corresponding to A" means that B is associated with A, and B can be determined based on A. However, it should also be understood that determining B based on A does not mean that B is determined solely based on A; B can also be determined based on A and / or other information.

[0188] It should be understood that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0189] It should be understood that in the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. 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 this application.

[0190] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0191] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0192] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0193] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can read or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., digital video discs, DVDs) or semiconductor media (e.g., solid-state disks, SSDs), etc.

[0194] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for wireless communication, characterized in that, include: The first terminal device receives a first paging advance indication (PEI). The first terminal device belongs to a first subgroup and a second subgroup. The first subgroup is used to receive paging messages initiated by the core network (CN), and the second subgroup is used to receive paging messages initiated by the radio access network (RAN). The first PEI includes first indication information and second indication information. The first indication information is the indication information corresponding to the first subgroup, and the second indication information is the indication information corresponding to the second subgroup. The first terminal device detects the first indication information but not the second indication information.

2. The method according to claim 1, characterized in that: The first terminal device detects the first indication information, but does not detect the second indication information which is predefined by the protocol or indicated by higher-layer signaling.

3. A method for wireless communication, characterized in that, include: The base station sends a first paging advance indication (PEI) to a first terminal device. The first terminal device belongs to a first subgroup and a second subgroup. The first subgroup is used to receive paging messages initiated by the core network (CN), and the second subgroup is used to receive paging messages initiated by the radio access network (RAN). The first PEI includes first indication information and second indication information. The first indication information is the indication information corresponding to the first subgroup, and the second indication information is the indication information corresponding to the second subgroup. The base station determines that the first terminal device detects the first indication information but does not detect the second indication information.

4. The method according to claim 3, characterized in that: The first terminal device detects the first indication information, but does not detect the second indication information which is predefined by the protocol or indicated by higher-layer signaling.

5. A wireless communication device, characterized in that, The wireless communication device is a first terminal device, and the device includes: The communication module is used to receive a first paging advance indication (PEI). The first terminal device belongs to a first subgroup and a second subgroup. The first subgroup is used to receive a paging message initiated by the core network (CN), and the second subgroup is used to receive a paging message initiated by the radio access network (RAN). The first PEI includes first indication information and second indication information. The first indication information is the indication information corresponding to the first subgroup, and the second indication information is the indication information corresponding to the second subgroup. The detection module is used to detect the first indication information, but not the second indication information.

6. The apparatus according to claim 5, characterized in that: The first terminal device detects the first indication information, but does not detect the second indication information which is predefined by the protocol or indicated by higher-layer signaling.

7. A wireless communication device, characterized in that, The wireless communication device is a base station, and the wireless communication device includes: The communication module is used to send a first paging advance indication (PEI) to a first terminal device, the first terminal device belonging to a first subgroup and a second subgroup. The first subgroup is used to receive paging messages initiated by the core network (CN), and the second subgroup is used to receive paging messages initiated by the radio access network (RAN). The first PEI includes first indication information and second indication information. The first indication information is the indication information corresponding to the first subgroup, and the second indication information is the indication information corresponding to the second subgroup. The determining module is used to determine that the first terminal device detects the first indication information but does not detect the second indication information.

8. The apparatus according to claim 7, characterized in that: The first terminal device detects the first indication information, but does not detect the second indication information which is predefined by the protocol or indicated by higher-layer signaling.

9. A wireless communication device, characterized in that, It includes a memory and a processor, the memory being used to store a program, and the processor being used to invoke the program in the memory to perform the method as described in any one of claims 1-4.

10. A wireless communication device, characterized in that, Includes a processor for calling a program from memory to perform the method as described in any one of claims 1-4.

11. A chip, characterized in that, Includes a processor for calling a program from memory, causing a device on which the chip is mounted to perform the method as described in any one of claims 1-4.

12. A computer-readable storage medium, characterized in that, It contains a program that causes a computer to perform the method as described in any one of claims 1-4.

13. A computer program product, characterized in that, Includes a program that causes a computer to perform the method as described in any one of claims 1-4.

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