Wireless communication method and device

Abstract

A method and apparatus for wireless communication are provided. The method comprises: a first terminal device receiving a first PEI, the first terminal device belonging to a first sub-group and a second sub-group, the first PEI being used for indicating whether the first sub-group and the second sub-group need paging detection; and the first terminal device determines whether to perform paging detection based on an indication of whether a target sub-group in the first PEI needs paging detection, the target sub-group being the first sub-group and / or the second sub-group.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and more specifically, to a method and device for wireless communication. Background Art

[0002] The terminal device can determine the subgroup to which the terminal device belongs in multiple ways, so the terminal device may determine multiple subgroup numbers. In this case, the terminal device may have an ambiguous understanding of the subgroup. For example, the terminal device does not know which subgroup number in the paging early indication (PEI) to perform subsequent processing. Summary of the invention

[0003] In order to solve the above problems, the present application provides a method and apparatus for wireless communication.

[0004] In a first aspect, a method for wireless communication is provided, including: a first terminal device receives a first PEI, the first terminal device belongs to a first subgroup and a second subgroup, and the first PEI is used to indicate whether the first subgroup and the second subgroup need to perform paging detection; the first terminal device determines whether to perform paging detection based on an indication of whether a target subgroup in the first PEI needs to perform paging detection, the target subgroup being the first subgroup and / or the second subgroup.

[0005] In a second aspect, a method for wireless communication is provided, including: the first terminal device receives a first PEI, the first PEI is used to indicate whether at least one subgroup needs to perform paging detection, the at least one subgroup includes a first subgroup; the sequence number of the first subgroup is determined based on at least one of the following information: the ID of the first terminal device, an indication of a base station, and an indication of a core network device.

[0006] According to a third aspect, a method for wireless communication is provided, including: a first terminal device receives a first PEI, the first PEI includes multiple indication information, the multiple indication information are respectively used to indicate whether multiple subgroups perform paging detection, and the first terminal device belongs to the multiple subgroups; if one indication information among the multiple indication information indicates that the first terminal device needs to perform paging detection, the first terminal device performs paging detection on one or more POs corresponding to the multiple indication information.

[0007] In a fourth aspect, a method for wireless communication is provided, comprising: a first terminal device receives first indication information, wherein the first indication information is used to indicate whether to turn on or off a PEI indication.

[0008] In a fifth aspect, a method for wireless communication is provided, comprising: a base station sends a first PEI, a first terminal device belongs to a first subgroup and a second subgroup, and the first PEI is used to indicate whether the first subgroup and the second subgroup need to perform paging detection; the base station determines whether the first terminal device performs paging detection based on an indication of whether the target subgroup in the first PEI needs to perform paging detection, and the target subgroup is the first subgroup and / or the second subgroup.

[0009] In a sixth aspect, a method for wireless communication is provided, comprising: a base station sends a first PEI, the first PEI is used to indicate whether at least one subgroup needs to perform paging detection, the at least one subgroup includes a first subgroup; the sequence number of the first subgroup is determined based on at least one of the following information: an ID of a first terminal device, an indication of a base station, an indication of a core network device.

[0010] In the seventh aspect, a method for wireless communication is provided, including: a base station sends a first PEI, the first PEI includes multiple indication information, and the multiple indication information are respectively used to indicate whether multiple subgroups perform paging detection, and a first terminal device belongs to the multiple subgroups; if one of the multiple indication information indicates that the first terminal device needs to perform paging detection, then the base station determines that the first terminal device performs paging detection on one or more POs corresponding to the multiple indication information.

[0011] In an eighth aspect, a method for wireless communication is provided, comprising: a base station sends first indication information to a first terminal device, wherein the first indication information is used to indicate whether to turn on or off a PEI indication.

[0012] In a ninth aspect, a wireless communication device is provided, comprising: a receiving module, used to receive a first PEI, wherein the first terminal device belongs to a first subgroup and a second subgroup, and the first PEI is used to indicate whether the first subgroup and the second subgroup need to perform paging detection; a determination module, used for the first terminal device to determine whether to perform paging detection based on an indication of whether the target subgroup in the first PEI needs to perform paging detection, the target subgroup being the first subgroup and / or the second subgroup.

[0013] In the tenth aspect, a wireless communication device is provided, including: a receiving module for receiving a first PEI, wherein the first PEI is used to indicate whether at least one subgroup needs to perform paging detection, and the at least one subgroup includes a first subgroup; the sequence number of the first subgroup is determined based on at least one of the following information: the ID of the first terminal device, the indication of the base station, and the indication of the core network device.

[0014] In the eleventh aspect, a wireless communication device is provided, including: a receiving module for receiving a first PEI, the first PEI including multiple indication information, the multiple indication information being respectively used to indicate whether multiple subgroups perform paging detection, and the first terminal device belongs to the multiple subgroups; a detection module for performing paging detection on one or more POs corresponding to the multiple indication information if one indication information among the multiple indication information indicates that the first terminal device needs to perform paging detection.

[0015] In a twelfth aspect, a wireless communication device is provided, including: a receiving module, used to receive first indication information, wherein the first indication information is used to indicate whether to turn on or off a PEI indication.

[0016] In a thirteenth aspect, a wireless communication apparatus is provided, comprising: a sending module, used to send a first PEI, a first terminal device belongs to a first subgroup and a second subgroup, and the first PEI is used to indicate whether the first subgroup and the second subgroup need to perform paging detection; a determination module, used to determine whether the first terminal device performs paging detection based on an indication of whether the target subgroup in the first PEI needs to perform paging detection, the target subgroup being the first subgroup and / or the second subgroup.

[0017] In a fourteenth aspect, a wireless communication device is provided, comprising: a sending module for sending a first PEI, wherein the first PEI is used to indicate whether at least one subgroup needs to perform paging detection, and the at least one subgroup includes a first subgroup; the sequence number of the first subgroup is determined based on at least one of the following information: an ID of a first terminal device, an indication of a base station, and an indication of a core network device.

[0018] In a fifteenth aspect, a wireless communication apparatus is provided, comprising: a sending module for sending a first PEI, the first PEI comprising multiple indication information, the multiple indication information being respectively used to indicate whether multiple subgroups perform paging detection, and a first terminal device belongs to the multiple subgroups; a determination module for determining that the first terminal device performs paging detection on one or more POs corresponding to the multiple indication information if one indication information among the multiple indication information indicates that the first terminal device needs to perform paging detection.

[0019] In a sixteenth aspect, a wireless communication apparatus is provided, comprising: a sending module, used to send first indication information to a first terminal device, wherein the first indication information is used to indicate whether to turn on or off a PEI indication.

[0020] In the seventeenth aspect, a wireless communication device is provided, comprising a memory and a processor, wherein the memory is used to store a program, and the processor is used to call the program in the memory to execute the method described in any one of the first aspect to the eighth aspect.

[0021] In an eighteenth aspect, a device is provided, comprising a processor for calling a program from a memory to execute a method as described in any one of aspects one to eight.

[0022] In a nineteenth aspect, a chip is provided, comprising a processor for calling a program from a memory so that a device equipped with the chip executes a method as described in any one of the first to fourth aspects.

[0023] In the twentieth aspect, a computer-readable storage medium is provided, on which a program is stored, wherein the program enables a computer to execute the method described in any one of the first aspect to the eighth aspect.

[0024] In the twenty-first aspect, a computer program product is provided, comprising a program, wherein the program enables a computer to execute the method described in any one of the first to eighth aspects.

[0025] In the twenty-second aspect, a computer program is provided, wherein the computer program enables a computer to execute the method as described in any one of the first to eighth aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1A to Figure 1C It is a system architecture diagram of a communication system that can be applied to an embodiment of the present application.

[0027] Figure 2 It is the paging logic diagram.

[0028] Figure 3 It is a schematic diagram of the relationship between the paging cycle, paging frame and paging opportunity.

[0029] Figure 4 This is a schematic diagram of a PEI paging indication provided in an embodiment of the present application.

[0030] Figure 5 It is a flowchart of a wireless communication method provided by an embodiment of the present application.

[0031] Figure 6 It is a flowchart of a wireless communication method provided by another embodiment of the present application.

[0032] Figure 7 It is a flowchart of a wireless communication method provided by another embodiment of the present application.

[0033] Figure 8It is a flowchart of a wireless communication method provided by another embodiment of the present application.

[0034] Fig. 9 It is a structural diagram of a wireless communication device provided by an embodiment of the present application.

[0035] Fig.10 It is a structural diagram of a wireless communication device provided in another embodiment of the present application.

[0036] Fig.11 It is a structural diagram of a wireless communication device provided in yet another embodiment of the present application.

[0037] Fig.12 It is a structural diagram of a wireless communication device provided in yet another embodiment of the present application.

[0038] Fig.13 It is a structural diagram of a wireless communication device provided in yet another embodiment of the present application.

[0039] Fig.14 It is a structural diagram of a wireless communication device provided in yet another embodiment of the present application.

[0040] Fig.15 It is a structural diagram of a wireless communication device provided in yet another embodiment of the present application.

[0041] Fig.16 It is a structural diagram of a wireless communication device provided in yet another embodiment of the present application.

[0042] Fig.17 It is a schematic diagram of the structure of the device provided in the embodiment of the present application. DETAILED DESCRIPTION

[0043] Communication system architecture

[0044] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: global system of 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, NR system evolution system, LTE on unlicensed spectrum (LTE-based access to unlicensed spectrum, LTE-U) system, NR on unlicensed spectrum (NR-based access to unlicensed spectrum, NR-U) system, NTN system, universal mobile telecommunication system (UMTS), wireless local area networks (WLAN), wireless fidelity (wireless cellular) system, etc. fidelity, WiFi), fifth-generation communication (5G) systems or other communication systems, such as future communication systems, such as sixth-generation mobile communication systems, and satellite communication systems.

[0045] Generally speaking, the number of connections supported by traditional communication systems is limited and easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communications, but also support, for example, device to device (D2D) communication, machine to machine (M2M) communication, machine type communication (MTC), vehicle to vehicle (V2V) communication, or vehicle to everything (V2X) communication, etc. The embodiments of the present application can also be applied to these communication systems.

[0046] The communication system in the embodiment of the present application can be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, or a standalone (SA) networking scenario.

[0047] The communication system in the embodiment of the present application can be applied to an unlicensed spectrum, where the unlicensed spectrum can also be considered as a shared spectrum; or, the communication system in the embodiment of the present application can also be applied to an authorized spectrum, where the authorized spectrum can also be considered as a dedicated spectrum.

[0048] The embodiments of the present application can be applied to NTN systems and terrestrial networks (TN) systems. As an example but not a limitation, NTN systems include NR-based NTN systems and IoT-based NTN systems.

[0049] The embodiments of the present application describe various embodiments in conjunction with network equipment and terminal equipment, wherein the terminal equipment may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent or user device, etc.

[0050] In an embodiment of the present application, the terminal device may be a station (STATION, ST) in a WLAN, and may be 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 function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted 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.

[0051] In an embodiment of the present application, a terminal device may be a device that provides voice and / or data connectivity to a user, and may be used to connect people, objects, and machines, such as a handheld device with a wireless connection function, a vehicle-mounted device, etc. The terminal device in the embodiment of the present application may be a mobile phone, a tablet computer (Pad), a laptop computer, a PDA, 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 smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, etc. Optionally, the terminal device may be used to act as a base station. For example, the terminal device may act as a scheduling entity that provides a sidelink signal between terminal devices in V2X or D2D, etc. For example, a cellular phone and a car communicate with each other using a sidelink signal. Cellular phones and smart home devices communicate with each other without relaying the communication signal through a base station.

[0052] In the embodiments of the present application, the terminal device can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can also be deployed on the water surface (such as ships, etc.); it can also be deployed in the air (for example, on airplanes, balloons and satellites, etc.).

[0053] In the embodiment of the present application, the terminal device may be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical, a wireless terminal device in smart grid, a wireless terminal device in transportation safety, a wireless terminal device in smart city, or a wireless terminal device in smart home, etc. The terminal device involved in the embodiment of the present application may also be referred to as a terminal, a user equipment (UE), an access terminal device, a 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 also be fixed or mobile.

[0054] As an example but not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable devices may also be referred to as wearable smart devices, which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also powerful functions achieved through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include full-featured, large-sized, and fully or partially independent of smartphones, such as smart watches or smart glasses, as well as devices that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various types of smart bracelets and smart jewelry for vital sign monitoring.

[0055] The network device in the embodiment of the present application may be a device for communicating with a terminal device, and the network device may also be referred to as an access network device or a wireless access network device, such as a base station. The network device in the embodiment of the present application may refer to a wireless access network (RAN) node (or device) that connects a terminal device to a wireless network. The base station can broadly cover various names as follows, or be replaced with the following names, such as: NodeB, evolved NodeB (eNB), next generation NodeB (gNB), relay station, access point, transmission point (TRP), transmission point (TP), master station MeNB, secondary station SeNB, multi-standard radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, base band unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. The base station can be a macro base station, a micro base station, a relay node, a donor node or the like, or a combination thereof. The base station may also refer to a communication module, modem or chip used to be set in the aforementioned device or apparatus. The base station may also be a mobile switching center and a device to device D2D, vehicle-to-everything (V2X), machine-to-machine (M2M) communication device that performs the base station function, a network side device in a 6G network, and a device that performs the base station function in a future communication system. The base station may support networks with the same or different access technologies. The embodiments of the present application do not limit the specific technology and specific device form adopted by the network equipment.

[0056] 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 based on the location of the mobile base station. In other examples, a helicopter or drone can be configured to act as a device that communicates with another base station.

[0057] In some deployments, the network device in the embodiments of the present application may refer to a CU or a DU, or the network device includes a CU and a DU. The gNB may also include an AAU.

[0058] The network equipment and terminal equipment can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on the water surface; they can also be deployed on aircraft, balloons and satellites in the air. The embodiments of the present application do not limit the scenarios in which the network equipment and terminal equipment are located.

[0059] As an example and not limitation, in an embodiment of the present application, the network device may have a mobile characteristic, for example, the network device may be a mobile device. In some embodiments of the present 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 high elliptical orbit (HEO) satellite, etc. In some embodiments of the present application, the network device may also be a base station set up in a location such as land or water.

[0060] In an embodiment of the present application, a network device may provide services for a cell, and a terminal device may communicate with the network device through transmission resources (e.g., frequency domain resources, or spectrum resources) used by the cell. The cell may be a cell corresponding to a network device (e.g., a base station). The cell may belong to a macro base station or a base station corresponding to a small cell. The small cells here may include: metro cells, micro cells, pico cells, femto cells, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0061] For example, Figure 1A The following is a schematic diagram of the architecture of a communication system provided in an embodiment of the present 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 or terminal). The network device 110 may provide communication coverage for a specific geographic area and may communicate with terminal devices located in the coverage area.

[0062] Figure 1AA network device and two terminal devices are shown exemplarily. In some embodiments of the present application, the communication system 100 may include multiple network devices and each network device may include another number of terminal devices within its coverage area, which is not limited in the embodiments of the present application.

[0063] For example, Figure 1B This is a schematic diagram of another communication system architecture provided in an embodiment of the present application. Figure 1B , including a terminal device 1101 and a satellite 1102, the terminal device 1101 and the satellite 1102 can communicate wirelessly. The network formed between the terminal device 1101 and the satellite 1102 can also be called NTN. Figure 1B In the architecture of the communication system shown, the satellite 1102 may have the function of a base station, and the terminal device 1101 and the satellite 1102 may communicate directly. In the system architecture, the satellite 1102 may be referred to as a network device. In some embodiments of the present application, the communication system may include multiple network devices 1102, and each network device 1102 may include other number of terminal devices within its coverage area, which is not limited in the embodiments of the present application.

[0064] For example, Figure 1C This is a schematic diagram of another communication system architecture provided in an embodiment of the present application. Figure 1C , including terminal equipment 1201, satellite 1202 and base station 1203, terminal equipment 1201 and satellite 1202 can communicate wirelessly, and satellite 1202 and base station 1203 can communicate. The network formed by terminal equipment 1201, satellite 1202 and base station 1203 can also be called NTN. Figure 1C In the architecture of the communication system shown, 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 needs to be transferred through the satellite 1202. In this system architecture, the base station 1203 can be called a network device. In some embodiments of the present application, the communication system may include multiple network devices 1203, and each network device 1203 may include other number of terminal devices within its coverage area, which is not limited in the embodiments of the present application.

[0065] It should be noted that Figure 1A-Figure 1C The system to which the present application is applicable is only illustrated in the form of an example. Of course, the method shown in the embodiment of the present application can also be applied to other systems, such as 5G communication system, LTE communication system, etc., and the embodiment of the present application does not make specific limitations on this.

[0066] In some embodiments of the present application, Figure 1A-Figure 1CThe 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 is not limited in the embodiments of the present application.

[0067] It should be understood that the device with communication function in the network / system in the embodiment of the present application can be referred to as a communication device. 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 and will not be repeated here. The communication equipment may also include other devices in the communication system 100, such as a network controller, a mobile management entity and other network entities, which is not limited in the embodiments of the present application.

[0068] It should be understood that the "indication" mentioned in the embodiments of the present application can be a direct indication, an indirect indication, or an indication of an association relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association relationship between A and B.

[0069] In the description of the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between two items, or an association relationship between the two items, or a relationship between indication and being indicated, configuration and being configured, and the like.

[0070] The "configuration" in the embodiments of the present application may include configuration through at least one of system messages, radio resource control (RRC) signaling and media access control element (MAC CE).

[0071] In some embodiments of the present application, "predefined" or "preset" may be implemented by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in a device (for example, including a terminal device and a network device), and the present application does not limit the specific implementation method thereof. For example, predefined may refer to that defined in a protocol.

[0072] In some embodiments of the present application, the "protocol" may refer to a standard protocol in the communication field, for example, it may include an LTE protocol, an NR protocol, and related protocols used in future communication systems, and the present application does not limit this.

[0073] For ease of understanding, some relevant technical knowledge involved in the embodiments of the present application is first introduced. The following related technologies can be arbitrarily combined with the technical solutions of the embodiments of the present application as optional solutions, and they all belong to the protection scope of the embodiments of the present application. The embodiments of the present application include at least part of the following contents.

[0074] With people's pursuit of speed, latency, high-speed mobility, energy efficiency, and the diversity and complexity of services in future life, the 3rd Generation Partnership Project (3GPP) international standards organization began to develop 5G. The main application scenarios of 5G may include: enhanced mobile broadband (eMBB), ultra reliable low latency communications (uRLLC) and massive machine type communication (mMTC). The solution of the embodiment of the present application can be applied to any of the above scenarios.

[0075] The main features of eMBB services are large amounts of data transmitted and high transmission rates. When transmitting eMBB service data, a longer time scheduling unit is generally used to transmit data to improve data transmission efficiency. Typical eMBB services may include: ultra-high-definition video, augmented reality (AR), virtual reality (VR), etc.

[0076] The main features of the uRLLC service are that it requires ultra-high reliability and ultra-low latency, and the amount of data transmitted is small and bursty. For example, without considering reliability, the transmission delay requirement of the uRLLC service is generally within 0.5 milliseconds. Under the premise that the reliability requirement reaches 99.999%, the transmission delay requirement of the uRLLC service is within 1ms. Due to the burstiness and randomness of the uRLLC service, the uRLLC service may not generate data packets for a long time, or it may generate multiple data packets in a very short time. These data packets are small packets in most cases (for example, a data packet of 50 bytes in size). Typical uRLLC services may include: wireless control in industrial manufacturing or production processes, motion control of unmanned vehicles or unmanned aircraft, and tactile interaction applications such as remote repair and remote surgery.

[0077] Typical features of mMTC include: high connection density, small data volume, latency-insensitive services, low cost and long service life of modules, etc. This scenario is mainly for IoT services, which places extremely high demands on the access capabilities of the network. 5G's powerful connectivity can quickly promote the deep integration of various vertical industries (smart cities, smart homes, environmental monitoring, etc.). With the Internet of Everything, people's lifestyles will also undergo disruptive changes. In this scenario, the data rate is low and latency is insensitive, the connection covers all aspects of life, the terminal cost is lower, the battery life is longer and the reliability is higher, which can truly realize the Internet of Everything.

[0078] Status of RRC

[0079] Some communication systems (such as NR systems) introduce three states for RRC: RRC idle state (RRC_IDLE state), RRC inactive state (RRC_INACTIVE state), and RRC connected state (RRC_CONNECTED state). The above three states reflect the connection status between the terminal device and the base station and the core network (CN).

[0080] A terminal device in the RRC idle state has no RRC context on the network side, that is, the parameters necessary 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. The terminal device is assigned a list of tracking area identifiers (TAI). From the perspective of the core network, the connection between the RAN side and the core network has been disconnected. In order to reduce power consumption, the terminal device is in sleep mode most of the time, so data transmission is not possible. In the downlink, a terminal device in the RRC idle state can be periodically awakened to receive paging messages from the network side (if any). Mobility can be handled by cell reselection by the terminal device. In the RRC idle state, the terminal device and the network side will not maintain uplink synchronization. If you want to switch from the RRC idle state to the RRC connected state, you can only establish an RRC context between the terminal device and the network side through random access.

[0081] In the RRC connected state, an RRC context can be established, and all parameters required for communication are known to both entities (terminal device and network side). From the perspective of the core network, the terminal device is in a state of connection with the core network. The cell to which the terminal device belongs is known, and the device identifier for transmission signaling between the terminal device and the network, i.e., the cell radio network temporary identifier (C-RNTI), has been configured. Data can be transmitted in the RRC connected state, but since the data stream is usually bursty, when there is no data stream transmission, the power consumption can be reduced by turning off the receiving circuit of the terminal device, using discontinuous reception (DRX) technology. Since the RRC context has been established in the base station in the connected state, it is relatively fast to leave DRX and start receiving / sending data. In the connected state, mobility can be controlled by the network side, that is, the terminal device provides neighboring cell measurements to the network, and the network commands the device to switch. Uplink time synchronization may or may not exist. When there is data to be transmitted, uplink synchronization can be established by using random access.

[0082] In LTE, only RRC idle state and RRC connected state are supported. In practice, it is common to use RRC idle state as the main sleep state of terminal devices to save power. However, due to the frequent transmission of small data packets in some terminal devices, if the LTE method is followed, there will be a large number of transitions from RRC idle state to RRC connected state. These transitions increase the signaling load and signaling delay. Therefore, in order to reduce the signaling load and waiting time, the RRC inactive state is introduced in NR.

[0083] In the RRC inactive state, the RRC context on the network side and the terminal device side is maintained. From the perspective of the core network, the RAN side is in a connected state with the core network. Therefore, the transition from the inactive state to the connected state is very fast and does not require core network signaling. At the same time, the terminal device is allowed to sleep in a similar manner to the RRC idle state, and mobility is handled through 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 positioning measurements mentioned above in the RRC inactive state. When performing positioning measurements in the RRC inactive state, the terminal device does not need to switch to the RRC connected state, thereby saving overhead and reducing latency.

[0084] From the above introduction, it can be seen that an important difference between different RRC states is the different mobility mechanisms. Efficient mobility handling is a key part of any mobile communication system. For RRC idle and RRC inactive states, mobility is handled by the terminal device through cell reselection, while for RRC connected state, mobility is handled by the network side based on terminal device measurements.

[0085] Paging

[0086] 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 paging. The paging process can be triggered by the core network side to send a paging request to a terminal device in an RRC idle state or an RRC inactive state, or the paging process can be triggered by the access network side to notify an inactive terminal device to initiate a connection recovery process, or to notify all terminal devices in the state covered by the access network to receive system information updates, or to notify all terminal devices in the state covered by the access network to receive alarm information sent by an earthquake and tsunami warning system (ETWS) and a commercial mobile alert system (CMAS).

[0087] Figure 2 The figure shows a paging logic diagram. Figure 2 It can be seen that the entire paging process is mapped from the logical channel to the transmission channel and finally to the physical channel. Among them, the demodulation reference signal (DMRS) can be used for demodulation of uplink and downlink data.

[0088] The paging process can be initiated by CN or RAN (or base station). Taking CN as an example, it can be initiated by the access and mobility management function (AMF) in CN. If the paging message is initiated by CN, the core network device will send a paging message to all base stations in the tracking area (TA) registered by the terminal device. After receiving the paging message sent by the core network device, the base station will interpret the content, obtain the 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. Usually, in order to save the overhead of transmitting paging messages, after receiving the paging message sent by the core network device, the base station can aggregate the paging messages corresponding to the terminal devices with the same paging occasion (PO) into one paging message, and finally transmit it to the relevant terminal devices through the paging channel. After receiving the paging message, the terminal device in the RRC idle state can initiate the RRC connection establishment process to receive data or signaling.

[0089] The above-mentioned paging message is carried by the physical downlink shared channel (PDSCH). Before receiving the paging message, the terminal device needs to first receive the paging parameters through the system message, and calculate the frame number and PO of the paging frame (PF) where the paging message is located in combination with the respective UE_ID. Then, the terminal device listens to the physical downlink control channel (PDCCH) encrypted by P-RNTI within the PO on the PF to receive the paging indication information, and finally receives the paging message based on the paging indication information. It can be understood that the paging indication information is carried in the PDCCH, and the paging indication information can be used to indicate the resource location of the PDSCH carrying the paging message.

[0090] For example, the terminal device can detect the PDCCH in the PO to obtain downlink control information (DCI), and the cyclic redundancy check (CRC) of the DCI is scrambled by the P-RNTI. If the terminal device detects the DCI, the PDSCH can be received at the resource location indicated by the DCI (such as the time domain resource location and / or the frequency domain resource location). The terminal device can use a temporary mobile subscriber identity (TMSI) (such as 5G-S-TMSI) to decode the PDSCH. If the decoding is successful, it means that the terminal device is paged and the terminal device obtains the paging message from the PDSCH; if the decoding fails, it means that the terminal device is not paged.

[0091] The PF above indicates the frame number of the system frame in which the paging message should appear, and the PO indicates the time when the paging message may appear. Figure 3 The position of PF in the DRX cycle and the position of PO in the PF are shown. Figure 3 As shown, the PF is located in the DRX cycle (or paging cycle) T, a paging cycle includes N PFs, a PF includes Ns POs, and a PO includes S time slots or synchronization signal blocks (SSB) beams. Among them, N, Ns, and S are all positive integers. Multiple POs in a paging cycle may correspond to different terminal devices. However, for a certain terminal device, within a paging cycle, the terminal device only needs to monitor its own PO.

[0092] As described above, the terminal device can calculate the PF and PO based on the UE identity (identity, ID). In some implementations, the system frame corresponding to the system frame number (SFN) that satisfies the formula (SFN+PF_offset) mod T = (T div N) * (UE_ID mod N) can be used as a PF, and within the PF, the index (index) i_s of the PO corresponding to the terminal device can be calculated according to the formula i_s = floor (UE_ID / N) mod Ns. Wherein, 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; Ns represents the number of POs in a PF. PF_offset represents the frame offset of the PF.

[0093] It should be noted that, for a terminal device, if the default DRX cycle is different from the DRX cycle configured for the terminal device, then the cycle length of the smaller DRX cycle of the two DRX cycles can be selected as the above T. That is, T = min (T_UE, T_sib), where T_sib represents the cycle length of the default DRX cycle indicated in the system message, and T_UE represents the cycle length of the DRX cycle configured for the terminal device. Of course, if the terminal device is not configured with T_UE, the cycle length of the default DRX cycle indicated in the system message can be used as the value of T, that is, T = T_sib.

[0094] It should also be noted that the above UE_ID can be calculated by the formula UE_ID = (5G-S-TMSI mod 1024), where 5G-S-TMSI represents the TMSI allocated by the communication system to the terminal device.

[0095] In addition, in NR technology, for terminal devices in the RRC idle state, the network device does not know which transmission beam to use to send paging messages to the terminal devices. In order to ensure that the terminal device can receive the paging message, the network device uses beam scanning to send the paging message. In order to support multi-beam transmission of paging messages, PO can be defined as a set of PDCCH monitoring occasions (PDCCH monitoring occasions), and different PDCCH monitoring occasions correspond to paging indication information sent through different transmission beams. A PF can include one or more POs or the starting time point of PO.

[0096] Since each SSB index corresponds to a PDCCH monitoring occasions, and different SSB indices correspond to different beams, multiple PDCCH monitoring occasions in a PO can be associated with transmission beams corresponding to different SSB indices to support multi-beam transmission of paging messages. The messages sent on each SSB beam are exactly the same. Usually, the SSBs required to complete a beam scan constitute an "SSB burst". PDCCH monitoring occasions are a series of time domain locations determined by the paging search space.

[0097] PDCCH monitoring occasions are numbered starting from the first PDCCH monitoring occasion of a PF until the next PF. S consecutive PDCCH monitoring occasions constitute a PO, where S is the number of SSBs actually sent. The number of the starting PDCCH monitoring occasions of each PO can be determined by the parameter firstPDCCH-MonitoringOccasionOfPO. If this parameter exists, the starting PDCCH monitoring occasion number of the (i_s+1)th PO is the (i_s+1)th value of the parameter. If this parameter does not exist, all PDCCH monitoring occasions are sequentially organized into POs, and the starting PDCCHmonitoring occasion number of the (i_s+1)th PO is i_s*S.

[0098] It should be noted that the PDCCH monitoring occasions constituting one PO may be located in one PF or in two PFs, that is, the PDCCH monitoring occasions included in one PO may span frames.

[0099] Based on the above introduction, it can be known that the terminal device will adopt a method similar to the DRX mechanism, with the paging cycle as the period, and periodically monitor the PDCCH in the PO to obtain the paging indication information. However, for some terminal devices, they may not be paged for a long period of time, but they still need to be awakened periodically to monitor the PDCCH that may carry the paging indication information. There is room for further optimization of the energy-saving method of such terminal devices.

[0100] Paging early indication (PEI)

[0101] Among the POs configured for terminal devices, only about 10% of the POs will transmit paging messages, and the remaining POs do not contain any information useful to the terminal devices. In other words, for the remaining 90% of the POs, the paging detection performed by the terminal device is just a waste of power. Before paging detection, some communication systems (such as NR Rel-17 and above NR versions) support the transmission of PEI. The PEI can be carried in the DCI timing. The PEI can be used to indicate whether there will be subsequent paging messages from the terminal device. The terminal device can determine whether to detect paging messages in subsequent POs or continue to sleep based on the PEI. The introduction of PEI can save power consumption of terminal devices.

[0102] PEI indicates in units of subgroups (i.e., a group of terminal devices). PEI contains 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 paging messages in subsequent POs or continue to sleep. The terminal device can find the corresponding indication information in PEI according to the subgroup number it is in, and then determine whether it needs to detect paging messages in the future based on the indication of the indication information.

[0103] like Figure 4 As shown in FIG. 1 , a PEI may include multiple bits, wherein some or all of the bits are used as PEI indications. Among the bits used as PEI indications, one bit corresponds to one subgroup, and is used to indicate whether the terminal equipment in the subgroup needs to perform paging detection. Figure 4 , a PEI includes 8 bits, and the 8 bits correspond to 8 subgroups respectively. Among them, the first bit (i.e., subgroup 1 PEI indication) can be used to indicate whether the terminal equipment in subgroup 1 needs to perform paging detection, the second bit (i.e., subgroup 2 PEI indication) can be used to indicate whether the terminal equipment in subgroup 2 needs to perform paging detection, and so on.

[0104] Taking the first bit as an example, when the bit is the first value, it indicates that the terminal devices in subgroup 1 need to perform paging detection, and when the bit is the second value, it indicates that the terminal devices in subgroup 1 do not need to perform paging detection. The first value can be one of 0 and 1, and the second value can be the other of 0 and 1.

[0105] Based on the introduction of the above concepts, the embodiments of the present application are described in detail below.

[0106] Example 1

[0107] Currently, the protocol only discusses whether the terminal devices in the subgroup need to perform paging detection through PEI, but there is no clear solution on how to determine the subgroup.

[0108] In view of the above problems, the following Figure 5 , the scheme of the embodiment of the present application is described in detail.

[0109] Figure 5 A method for wireless communication provided by an embodiment of the present application. The method can be performed by a first terminal device and a network side device (such as a base station). The first terminal device and the network side device can be any type of terminal device and base station mentioned above. The first terminal device can be a terminal device in an RRC idle state, or a terminal device in an RRC inactive state or an RRC connected state.

[0110] In step S510, the base station sends a first PEI to the first terminal device. The first PEI can be used to indicate whether at least one subgroup needs to perform paging detection. The at least one subgroup includes a first subgroup. The first subgroup is a subgroup to which the first terminal device belongs. The sequence number of the first subgroup can be determined based on at least one of the following information: the ID of the first terminal device, the indication of the base station, and the indication of the core network device. In other words, the sequence number of the first subgroup can be determined by the first terminal device itself, or it can be indicated by the base station or the core network device to the first terminal device.

[0111] In some embodiments, the first terminal device may determine the sequence number of the first subgroup based on the ID of the first terminal device.

[0112] The sequence number of the first subgroup can be determined based on the order of the first terminal device among the multiple terminal devices corresponding to the first PO. For one PO, there may be a situation where multiple terminal devices share one PO, that is, the paging messages of the multiple terminal devices will be transmitted on the same PO. In the embodiment of the present application, the first PO can be a PO shared by multiple terminal devices, that is, the first PO can be used to carry the paging messages of the multiple terminal devices. It can be understood that the first PO is also the PO corresponding to the first terminal device, and the first terminal device can calculate the index of the first PO according to the method described above. The first PO may include one or more POs. The first PO corresponds to a PEI indication.

[0113] The embodiment of the present application can sort the terminal devices that share the first PO, and then divide the subgroups based on the sorted order. For example, according to the ID of the terminal device, the sequence number of the first terminal device in the first PO is:

[0114] floor[floor(UE_ID / N n ) / (Ns / m)](1)

[0115] Wherein, UE_ID represents the identifier of the first terminal device, N nIt represents the number of paging frames in the paging cycle corresponding to the paging of the nth subgroup, Ns represents the number of paging opportunities in a paging frame, m represents the number of POs indicated in a PEI, m is a positive integer, G represents the number of subgroups in a PO, floor represents rounding down, and n is 1 or.

[0116] It can be understood that the paging cycle corresponding to the paging of the nth subgroup may refer to the paging cycle corresponding to the type of paging message that the nth subgroup needs to receive. For example, if the paging message that the nth subgroup needs to receive is paging initiated by RAN, then the paging cycle may refer to the paging cycle corresponding to the paging initiated by RAN, that is, the paging cycle of RAN. For another example, if the paging message that the nth subgroup needs to receive is paging initiated by CN, then the paging cycle may refer to the paging cycle corresponding to the paging initiated by CN, that is, the paging cycle of CN.

[0117] The number of POs indicated in a PEI can be 1 or more. If the number of POs indicated in a PEI is different, the value of m is different. The value of m can be 1, or other values ​​such as 2, 3, 4, etc. When the value of m is 1, it means that a PEI indicates one PO. When the value of m is 2, it means that a PEI indicates two POs, and so on. By adopting this scheme, the terminal devices can be numbered in the first PO through rounding down operations, so that the subgroup numbers can be allocated based on the numbers later.

[0118] After obtaining the serial number of the first terminal device in the first PO, the following formula (2) can be used to determine the subgroup serial number of the first terminal device:

[0119]

[0120] Among them, mod means remainder, G np It indicates the number of subgroups of the same type as the nth subgroup in the pth PO in the PO indicated in a PEI (such as the first PEI), where n is 1 or 2, and 1≤p≤m.

[0121] One PEI may indicate multiple POs, and the number of subgroups included in the multiple POs may be the same or different. Indicates the total number of subgroups of the same type as the nth subgroup contained in multiple POs indicated by a PEI (such as the first PEI).

[0122] Assume that the first terminal device belongs to the first subgroup and the second subgroup, and the first subgroup and the second subgroup belong to different categories of subgroups. For example, the first subgroup is used to receive paging messages initiated by the RAN, and the second subgroup is used to receive paging messages initiated by the CN. When n is 1, G np represents the number of subgroups in the pth PO that are of the same type as the first subgroup. When n is 2, G npIndicates the number of subgroups in the pth PO that are of the same type as the second subgroup.

[0123] If the number of subgroups contained in each of the multiple POs is the same, formula (2) can be transformed into the following formula:

[0124] floor[floor(UE_ID / N n ) / (Ns / m)]mod(m*G n )(3)

[0125] Among them, G n Indicates the number of subgroups in a PO that are of the same type as the nth subgroup.

[0126] The above method of determining the subgroup sequence number is applicable to terminal devices in the RRC_IDLE state, RRC_INACTIVE state and RRC_CONNECTED state.

[0127] For paging initiated by CN or RAN, the paging cycle can be broadcast through system messages. For paging initiated by CN, a specific cycle can also be configured for the terminal device through NAS signaling. For paging initiated by RAN, a specific cycle can also be configured for the terminal device through RAN. The terminal device can use the shortest cycle among the above cycles. That is to say, for a terminal device in the RRC idle state, the shortest cycle among the first two cycles mentioned above can be used. For a terminal device in the RRC inactive state, the shortest cycle among the first three cycles mentioned above can be used. It can be understood that different paging cycles will result in different numbers of paging frames in a paging cycle, and thus the calculated subgroup sequence number will also be different.

[0128] In some other embodiments, the subgroup sequence number of the first terminal device may also be indicated by the base station and / or the core network device. For example, the base station may indicate the subgroup sequence number of the first terminal device to the first terminal device through RRC signaling. In this case, the first terminal device may be a terminal device in the RRC_INACTIVE state and the RRC_CONNECTED state. The subgroup sequence number of the first terminal device is the subgroup sequence number of the first terminal device in the first PEI, and the paging message corresponding to the first PEI is a paging message initiated by the CN or the RAN.

[0129] For another example, the core network device may indicate the subgroup number of the first terminal device to the first terminal device through non-access stratum (NAS) signaling. In this case, the first terminal device may be a terminal device in the RRC_IDLE state and the RRC_INACTIVE state. The subgroup number of the first terminal device is the subgroup number of the first terminal device in the first PEI, and the paging message corresponding to the first PEI is the paging message initiated by the CN.

[0130] By indicating the subgroup number of the first terminal device through the base station or core network device, the control flexibility of the network side can be increased and the probability of the terminal device being phantomly awakened can be reduced. Phantom awakening means that the terminal device actually has no paging message, but the PEI indicates that there is a terminal device being paged in the subgroup where the terminal device is located. The terminal device wakes up to perform paging detection but does not detect the paging message. Phantom awakening brings unnecessary power consumption to the terminal device. The paging detection here refers to the detection of paging messages.

[0131] In some embodiments, the terminal devices in the first subgroup may be determined based on the service type of the terminal devices. In other words, the base station or the core network device may divide the terminal devices with the same service type into a subgroup. The service type of the terminal device may include one or more of eMBB, uRLLC, and mMTC.

[0132] Different business scenarios have different paging requirements and delay requirements. For example, in the uRLLC scenario, the terminal device is sensitive to delay and has a short paging cycle. The base station or core network equipment can group the terminal devices according to different business types, such as grouping the terminal devices with long paging cycles into one subgroup and grouping the terminal devices with short paging cycles into another subgroup. This can avoid grouping the terminal devices with long paging cycles and short paging cycles into one subgroup, resulting in the terminal devices with long paging cycles being woken up falsely.

[0133] In other embodiments, the terminal devices in the first subgroup may be determined based on the frequency (also referred to as scheduling) of the terminal devices being paged. For example, the base station or core network device may group the terminal devices that are frequently paged into one subgroup, and the terminal devices that are not frequently paged into another subgroup, that is, the terminal devices that are frequently paged are assigned the same subgroup sequence number, and the terminal devices that are not frequently paged are assigned the same subgroup sequence number, so as to avoid the probability of the terminal devices that are not frequently paged being phantomly awakened.

[0134] For example, the probability of terminal device A being paged is 0.1, and the probability of terminal device B being paged is 0.01. Then the base station or core network equipment can assign terminal devices with a paging probability of about 0.01 and low latency requirements to a subgroup, and send paging messages to these terminal devices in a concentrated manner every few dozen paging cycles, which can avoid the terminal devices with a paging probability of about 0.01 from being falsely awakened.

[0135] In some embodiments, the division method of the first subgroup and / or the second subgroup may be predefined in the protocol or specified by high-level signaling. Taking the first subgroup as an example, the first subgroup may be determined based on the ID of the terminal device, the service type of the terminal device, or the frequency of being paged, which may be predefined in the protocol or specified by high-level signaling.

[0136] Example 2

[0137] As can be seen from Example 1, the terminal device can determine the subgroup to which the terminal device belongs in multiple ways, so there will be a situation where the terminal device determines multiple subgroup numbers. In this case, the terminal device will have an ambiguous understanding of the subgroup. For example, the terminal device does not know which subgroup number in the PEI to perform subsequent processing.

[0138] For example, the terminal device can determine the subgroup number based on UE_ID (such as formula (2) or formula (3)), or obtain the subgroup number through RRC signaling or NAS signaling. If for paging initiated by CN, the terminal device determines the subgroup number based on formula (2), and for paging initiated by RAN, the subgroup number of the terminal device in PEI is determined based on RRC signaling, when the terminal device belongs to different subgroups in the paging initiated by CN and the paging initiated by RAN, after the terminal device detects PEI, it does not know which subgroup number to use for subsequent processing. Alternatively, for paging initiated by CN, the terminal device can determine the subgroup number based on formula (2), or determine the subgroup number based on RRC signaling. In this case, after the terminal device detects PEI, it does not know which subgroup number to use for subsequent processing.

[0139] For another example, the PO positions of RAN-initiated paging and CN-initiated paging are both determined based on the terminal device ID, and there may be overlap in the PO positions of the two. If the terminal device determines different subgroup numbers for CN-initiated paging and RAN-initiated paging, then after the terminal device detects the PEI, it does not know which subgroup number to use for subsequent processing.

[0140] In view of the above problems, the following Figure 6 , the scheme of the embodiment of the present application is described in detail.

[0141] Figure 6 It is a flowchart of a wireless communication method provided in an embodiment of the present application. Figure 6The method can be performed by a first terminal device and a network side device (such as a base station). The first terminal device and the network side device can be any type of terminal device and base station mentioned above. The first terminal device can be a terminal device in an RRC idle state, or a terminal device in an RRC inactive state or an RRC connected state. The first terminal device can belong to the first subgroup and the second subgroup at the same time. The first subgroup and the second subgroup belong to subgroups of different categories, that is, the first subgroup belongs to the first subgroup, and the second subgroup belongs to the second subgroup. The embodiment of the present application does not specifically limit the division method of subgroup categories. For example, subgroups can be divided based on service types (such as eMBB, uRLLC, mMTC). For another example, subgroups can be divided based on the type of paging message. The type of paging message can include paging initiated by CN and paging initiated by RAN. As an example, the first subgroup can correspond to the paging message initiated by RAN, that is, the first subgroup is used to receive the paging message initiated by RAN. The second subgroup can correspond to the paging message initiated by CN, that is, the second subgroup is used to receive the paging message initiated by CN.

[0142] In step S610, the base station sends a first PEI to the first terminal device. The first PEI can be used to indicate whether the first subgroup and the second subgroup need to perform paging detection. The first PEI can include two indication information, such as indication information 1 and indication information 2, where indication information 1 can be used to indicate whether the first subgroup needs to perform paging detection, and indication information 2 can be used to indicate whether the second subgroup needs to perform paging detection.

[0143] In step S620, the first terminal device determines whether to perform paging detection based on the indication of whether the target subgroup in the first PEI needs to perform paging detection. The target subgroup is the first subgroup and / or the second subgroup.

[0144] The target subgroup may be predefined in the protocol, or may be indicated by a higher-level signaling. The protocol or higher-level signaling may instruct the terminal device to perform subsequent processing according to the indication of the target subgroup in the PEI.

[0145] For example, for a terminal device in the RRC_INACTIVE state, the terminal device can receive the subgroup number indicated by the network side, or calculate a subgroup number based on the UE ID. In this case, the protocol can stipulate that the terminal device only performs paging detection according to the subgroup number calculated by the UE ID (that is, the target subgroup is the subgroup determined by the UE ID). This can clarify the behavior of the terminal device and make the network side device and the terminal device have the same understanding of the subgroup.

[0146] In some embodiments, the target subgroup is the first subgroup. The first terminal device may determine whether to perform paging detection based on an indication of whether the first subgroup in the first PEI needs to perform paging detection. If the first PEI indicates that the first subgroup needs to perform paging detection, the first terminal device performs paging detection; if the first PEI indicates that the first subgroup does not need to perform paging detection, the first terminal device does not perform paging detection. In this case, the first terminal device may only detect the first subgroup in the first PEI, but not the second subgroup in the first PEI. That is, if the first PEI indicates that the first subgroup does not need to perform paging detection, even if the first PEI indicates that the second subgroup needs to perform paging detection, the first terminal device does not need to perform paging detection. If the first PEI indicates that the first subgroup needs to perform paging detection, even if the first PEI indicates that the second subgroup does not need to perform paging detection, the first terminal device also performs paging detection.

[0147] In some embodiments, the target subgroup is the second subgroup. The first terminal device may determine whether to perform paging detection based on an indication of whether the second subgroup in the first PEI needs to perform paging detection. If the first PEI indicates that the second subgroup needs to perform paging detection, the first terminal device performs paging detection; if the first PEI indicates that the second subgroup does not need to perform paging detection, the first terminal device does not perform paging detection. In this case, the first terminal device may only detect the second subgroup in the first PEI, but not the first subgroup in the first PEI. That is, if the first PEI indicates that the second subgroup does not need to perform paging detection, even if the first PEI indicates that the first subgroup needs to perform paging detection, the first terminal device does not need to perform paging detection. If the first PEI indicates that the second subgroup needs to perform paging detection, even if the first PEI indicates that the first subgroup does not need to perform paging detection, the first terminal device also performs paging detection.

[0148] In some embodiments, the target subgroup is the first subgroup and the second subgroup. The first terminal device can determine whether to perform paging detection based on the indication of whether the first subgroup and the second subgroup need to perform paging detection in the first PEI. For example, the first terminal device can perform paging detection when any one of the first subgroup and the second subgroup needs to perform paging detection. That is to say, if the first PEI indicates that the first subgroup and / or the second subgroup needs to perform paging detection, the first terminal device performs paging detection. Only when the first PEI indicates that neither the first subgroup nor the second subgroup needs to perform paging detection, the first terminal device does not need to perform paging detection. This approach can reduce the complexity of scheduling of base stations or core network devices, and the base station or core network device may not need to additionally indicate the target subgroup to the terminal device.

[0149] The PO indicated in the first PEI may be one or more. In some embodiments, the POs corresponding to the first subgroup and the second subgroup are different. When the number of POs indicated in the first PEI is multiple, and the first subgroup and the second subgroup belong to different POs, if the first PEI indicates that the first subgroup and / or the second subgroup need to perform paging detection, the first terminal device performs paging detection, which may mean that if the first subgroup and / or the second subgroup need to perform paging detection, the first terminal device performs paging detection on the POs to which the first subgroup and the second subgroup belong. Assuming that the first subgroup belongs to the first PO and the second subgroup belongs to the second PO, if the first subgroup and / or the second subgroup need to perform paging detection, the first terminal device performs paging detection on the first PO and the second PO. This method can reduce the probability of other terminal devices in the same subgroup as the first terminal device being falsely awakened. For example, if other terminal devices need to wake up for paging detection in the PO corresponding to the first subgroup, and there is a paging message of the terminal device in the PO corresponding to the second subgroup, the first PEI indicates that the first subgroup needs to be paging, and the second subgroup does not need to be paging. The first terminal device performs paging detection in the POs corresponding to the first subgroup and the second subgroup and detects the paging message. Other terminal devices in the second subgroup do not perform paging detection according to the PEI instruction, so they are not woken up falsely, saving power consumption.

[0150] Example 3

[0151] As described above, PEI can indicate whether a subgroup performs paging detection. When a terminal device in the subgroup has a paging message, the PEI will instruct the subgroup to perform paging detection. If only one or a small number of terminal devices in the subgroup have a paging message, the terminal devices in the subgroup need to be awakened and perform paging detection, which will cause the probability of other terminal devices being woken up falsely.

[0152] In view of the above problems, the following Figure 7 , the scheme of the embodiment of the present application is described in detail.

[0153] Figure 7 It is a flowchart of a wireless communication method provided in an embodiment of the present application. Figure 7The method can be performed by a first terminal device and a network side device (such as a base station). The first terminal device and the network side device can be any type of terminal device and base station mentioned above. The first terminal device can be a terminal device in an RRC idle state, or a terminal device in an RRC inactive state or an RRC connected state. The first terminal device can belong to multiple subgroups at the same time. The multiple subgroups can be subgroups determined by the method in the embodiment. For example, the multiple subgroups can be subgroups determined by one or more of formula (2), RRC signaling and NAS signaling. The multiple subgroups can include a subgroup for receiving a paging message initiated by the RAN, and also include a subgroup for receiving a paging message initiated by the CN.

[0154] In step S710, the base station sends a first PEI to the first terminal device. The first PEI may include multiple indication information, and the multiple indication information is used to indicate whether multiple subgroups perform paging detection. That is, each subgroup has corresponding indication information, and one indication information can be used to indicate whether the corresponding subgroup performs paging detection.

[0155] In step S720, if one indication information among the multiple indication information indicates that the first terminal device needs to perform paging detection, the first terminal device performs paging detection on one or more POs corresponding to the multiple indication information.

[0156] Since the first terminal device belongs to multiple subgroups, the multiple indication information indicates whether the multiple subgroups need to perform paging detection. It can also be understood that the multiple indication information indicates whether the first terminal device performs paging detection.

[0157] In an embodiment of the present application, one indication information among multiple indication information may be any indication information. If any indication information indicates that the first terminal device needs to perform paging detection, the first terminal device performs paging detection on one or more POs corresponding to the multiple indication information. Assuming that the multiple indication information includes the first indication information, when the first indication information indicates that the first terminal device needs to perform paging detection, regardless of whether other indication information indicates that the first terminal device needs to perform paging detection, the first terminal device performs paging detection on the POs corresponding to the multiple indication information.

[0158] The multiple indication information may correspond to the same PO or different POs, and the embodiments of the present application do not specifically limit this. In some embodiments, multiple indication information corresponds to different POs. Assuming that the multiple indication information includes the first indication information, the first indication information can be used to indicate whether the first subgroup needs to perform paging detection, and the PO corresponding to the first indication information is the first PO. When the first indication information indicates that paging detection is required, the first subgroup needs to perform paging detection on the first PO. If the multiple indication information also includes the second indication information, the second indication information is used to indicate whether the second subgroup needs to perform paging detection, and the PO corresponding to the second indication information is the second PO. The first terminal device belongs to the first subgroup and the second subgroup. If the first indication information indicates that the first subgroup needs to perform paging detection, and the second indication information indicates that the second subgroup does not need to perform paging detection, the first terminal device performs paging detection on both the first PO and the second PO.

[0159] According to the above method, when the actual paging message of the first terminal device is transmitted on the PO corresponding to the second indication information (i.e., the second PO), in the subgroup corresponding to the second indication information (i.e., the second subgroup), except for the first terminal device, there is no paging message transmission for other terminal devices. If there is a paging message transmission in the subgroup corresponding to the first indication information (i.e., the first subgroup), then the base station or network device can indicate that there is a paging message in the first indication information, and indicate that there is no paging message in the second indication information. After the first terminal device receives the first PEI, it can perform paging detection on both the first PO and the second PO. For other terminal devices in the second subgroup, there is no need to wake up for paging detection, which can reduce the probability of other terminal devices being falsely awakened.

[0160] In addition, due to the high modulation order of the paging data channel, a higher synchronization accuracy is required. The higher the synchronization accuracy, the higher the energy consumed. In order to perform paging detection, the terminal device needs to perform high-precision synchronization before receiving the paging channel. The energy consumed by synchronization accounts for a high proportion in the paging detection. After the terminal device completes synchronization, it starts to receive the paging signal. Since the multiple POs indicated by a PEI are close in time, the terminal device remains awake and does not enter the sleep state. Compared with the process of out-of-sync, synchronization, and paging detection, the power consumption of this process is relatively small. Therefore, the terminal device remains awake, and performing paging detection on multiple POs does not consume too much power of the terminal device.

[0161] Example 4

[0162] For paging, the PO within a paging cycle needs to carry the paging messages of all terminal devices in the tracking area. A tracking area includes an area covered by multiple base stations. Each PO can actually only carry the paging messages of 32 terminal devices, and the number of terminal devices that can transmit paging messages on the PO is much greater than 32. In the embodiment of the present application, the terminal device that can transmit the paging message on the PO is called a candidate terminal device. The terminal device indicated by the PEI is a candidate terminal device, not a terminal device that actually transmits the paging message. The number of candidate terminal devices is much greater than the terminal device that actually transmits the paging message. In the PEI, 1 bit indicates whether a terminal device in a subgroup has a paging message. If there is a terminal device in the group of terminal devices that is paged, the corresponding bit in the PEI will indicate that the subgroup needs to perform paging detection, and all terminal devices in the subgroup need to wake up for paging detection. In other words, the more terminal devices in a subgroup, the higher the probability that the terminal device is virtual awakened. Virtual awakening refers to the situation where the terminal device does not actually have a paging message, but the PEI indicates that the subgroup where the terminal device is located has a terminal device that is paged, and the terminal device wakes up for paging detection.

[0163] For example, assume that the terminal devices are independent of each other and the paging probability of each terminal device is 0.1. If there are 10 terminal devices in a subgroup, the probability that the terminal devices in the subgroup do not need to wake up is 0.9. 10 =0.35. If there are 20 terminal devices in a subgroup, the probability that the terminal devices in the subgroup do not need to wake up is 0.9 20 =0.12. If there are 30 terminal devices in a subgroup, the probability that the terminal devices in the subgroup do not need to wake up is 0.9 30 =0.04. As can be seen from the above, when the number of terminals in a subgroup is large, there is only a small probability that the terminal devices in the subgroup do not need to perform paging detection, but a great probability that paging detection is required. Taking 30 terminal devices in a subgroup as an example, 4% of the paging detections of the terminal devices do not need to be performed, while 96% of the paging detections need to be performed. Considering that the terminal device needs to perform PEI detection before each paging detection, the power consumption of PEI detection is already greater than the power consumption saved by 4% paging detection. Therefore, the embodiment of the present application can reduce the probability of terminal devices being falsely awakened by reducing the number of terminal devices sharing the same subgroup.

[0164] Combine the following Figure 8 , the scheme of the embodiment of the present application is described in detail.

[0165] Figure 8 It is a flowchart of a wireless communication method provided in an embodiment of the present application. Figure 8The method can be performed by a first terminal device and a network side device (base station). The first terminal device and the network side device can be any type of terminal device and base station mentioned above. The first terminal device can be a terminal device in an RRC idle state, or a terminal device in an RRC inactive state or an RRC connected state.

[0166] In step S810, the base station sends first indication information to the first terminal device, where the first indication information is used to indicate whether to turn on or off the PEI indication.

[0167] If the first indication information indicates to turn on the PEI indication, the first terminal device detects the PEI. The first terminal device can determine whether to perform paging detection according to the indication in the PEI. If the PEI indicates that the first terminal device needs to perform paging detection, the first terminal device performs paging detection; if the PEI indicates that the first terminal device does not need to perform paging detection, the first terminal device does not perform paging detection.

[0168] If the first indication information indicates to turn off the PEI indication, the first terminal device may not detect the PEI. The first terminal device may directly perform paging detection on the determined PO. If the first terminal device turns off the PEI indication, the number of terminal devices in the subgroup indicated by the PEI can be reduced, reducing the probability of other terminal devices being phantomly awakened.

[0169] In some embodiments, when the number of terminal devices in a subgroup exceeds a certain threshold, the base station or core network device may turn off the PEI indication of some terminal devices in the subgroup to reduce the probability of other terminal devices being falsely awakened.

[0170] The first terminal device in the embodiment of the present application may be a terminal device with a higher paging probability, or a terminal device with a higher latency requirement.

[0171] In some embodiments, the first indication information may be carried by one or more of the following information: system message, MAC layer signaling, RRC signaling, DCI or NAS signaling.

[0172] The multiple embodiments described above can be implemented separately or in combination with each other, and the embodiments of the present application do not specifically limit this. For example, the method of determining the subgroup in Embodiment 1 can be combined with other embodiments, that is, the method of determining the subgroup sequence number in other embodiments can adopt the method of Embodiment 1. For another example, the method of turning on or off the PEI indication in Embodiment 4 can be combined with other embodiments. For example, in Embodiment 2, the first terminal device receives the first PEI only when the first indication information indicates to turn on the PEI indication.

[0173] The above combined with Figure 1 to Figure 8, describes the method embodiment of the present application in detail, and the following is combined with Figures 9 to 17 , describes the device embodiment of the present application in detail. It should be understood that the description of the method embodiment corresponds to the description of the device embodiment, so the parts not described in detail can refer to the previous method embodiment.

[0174] Fig. 9 It is a structural diagram of a wireless communication device provided by an embodiment of the present application. Fig. 9 The apparatus 900 is a first terminal device. The wireless communication apparatus 900 may include a receiving module 910 and a determining module 920.

[0175] The receiving module 910 is used to receive a first PEI, the first terminal device belongs to a first subgroup and a second subgroup, and the first PEI is used to indicate whether the first subgroup and the second subgroup need to perform paging detection.

[0176] The determination module 920 is used for the first terminal device to determine whether to perform paging detection based on an indication of whether a target subgroup in the first PEI needs to perform paging detection, and the target subgroup is the first subgroup and / or the second subgroup.

[0177] In some embodiments, the first subgroup is a first type of subgroup, and the second subgroup is a second type of subgroup.

[0178] In some embodiments, the first subgroup corresponds to a paging message initiated by a radio access network RAN, and the second subgroup corresponds to a paging message initiated by a core network CN.

[0179] In some embodiments, the target subgroup is predefined by a protocol or indicated by high-level signaling.

[0180] In some embodiments, the target subgroup is the first subgroup and the second subgroup, and the determination module 920 is used to: if the first PEI indicates that any one of the first subgroup and the second subgroup needs to perform paging detection, then perform paging detection; if the first PEI indicates that neither the first subgroup nor the second subgroup needs to perform paging detection, then do not perform paging detection.

[0181] In some embodiments, the paging occasions PO corresponding to the first subgroup and the second subgroup are different.

[0182] In some embodiments, the first subgroup corresponds to a first PO, the second subgroup corresponds to a second PO, and the determination module 920 is used to: if the first PEI indicates that any one of the first subgroup and the second subgroup needs to perform paging detection, then paging detection is performed on both the first PO and the second PO.

[0183] In some embodiments, the target subgroup is the first subgroup, and the determination module 920 is used to: if the first PEI indicates that the first subgroup needs to perform paging detection, then perform paging detection; if the first PEI indicates that the first subgroup does not need to perform paging detection, then do not perform paging detection.

[0184] In some embodiments, the target subgroup is the second subgroup, and the determination module 920 is used to: if the first PEI indicates that the second subgroup needs to perform paging detection, then perform paging detection; if the first PEI indicates that the second subgroup does not need to perform paging detection, then do not perform paging detection.

[0185] In some embodiments, the sequence number of the first subgroup is determined based on RRC signaling.

[0186] In some embodiments, the sequence number of the second subgroup is determined based on NAS signaling.

[0187] In some embodiments, the terminal devices in the first subgroup and / or the second subgroup are determined based on the service type of the terminal devices and / or the frequency of being paged.

[0188] In some embodiments, the service type includes one or more of the following: eMBB, uRLLC, and mMTC.

[0189] In some embodiments, the sequence number of the nth subgroup is:

[0190]

[0191] Wherein, UE_ID represents the identifier of the first terminal device, N n represents the number of paging frames in the paging cycle corresponding to the paging of the nth subgroup, Ns represents the number of POs in a paging frame, m represents the number of POs indicated in a PEI, m is a positive integer, G np It indicates the number of subgroups of the same type as the nth subgroup in the pth PO in the PO indicated by the first PEI, 1≤p≤m, n is 1 or 2, floor means rounding down, and mod means remainder.

[0192] In some embodiments, the sequence number of the nth subgroup is:

[0193] floor[floor(UE_ID / N n ) / (Ns / m)]mod(m*G n )

[0194] Wherein, UE_ID represents the identifier of the first terminal device, N nrepresents the number of paging frames in the paging cycle corresponding to the paging of the nth subgroup, Ns represents the number of POs in a paging frame, m represents the number of POs indicated in a PEI, m is a positive integer, G n Indicates the number of subgroups in a PO that are of the same type as the nth subgroup, where n is 1 or 2, floor means rounding down, and mod means finding the remainder.

[0195] In some embodiments, the receiving module 910 is used to: receive first indication information, where the first indication information is used to instruct the first terminal device to turn on or off PEI indication; if the first indication information indicates that the first terminal device turns on PEI indication, then receive the first PEI.

[0196] In some embodiments, the receiving module 910 is further used for: if the first indication information indicates that the first terminal device turns off the PEI indication, then not receiving the first PEI.

[0197] In some embodiments, the first indication information is carried by one or more of the following information: system message, MAC layer signaling, RRC signaling, DCI or NAS signaling.

[0198] In some embodiments, the first terminal device is a terminal device in an RRC inactive state.

[0199] Fig.10 It is a structural diagram of a wireless communication device provided in another embodiment of the present application. Fig.10 The wireless communication device 1000 may be a first terminal device. The wireless communication device 1000 includes a receiving module 1010.

[0200] The receiving module 1010 is used to receive a first PEI, where the first PEI is used to indicate whether at least one subgroup needs to perform paging detection, and the at least one subgroup includes a first subgroup; the sequence number of the first subgroup is determined based on at least one of the following information: the ID of the first terminal device, an indication of the base station, and an indication of the core network device.

[0201] In some embodiments, the sequence number of the first subgroup is:

[0202]

[0203] Wherein, UE_ID represents 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 a paging frame, m represents the number of POs indicated in a PEI, m is a positive integer, G pIt indicates the number of subgroups of the same type as the first subgroup in the p-th PO in the PO indicated by the first PEI, 1≤p≤m, floor means rounding down, and mod means finding the remainder.

[0204] In some embodiments, the sequence number of the first subgroup is:

[0205] floor[floor(UE_ID / N) / (Ns / m)]mod(m*G)

[0206] Among them, UE_ID represents 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 a paging frame, m represents the number of POs indicated in a PEI, m is a positive integer, G represents the number of subgroups in a PO that are of the same type as the first subgroup, floor represents rounding down, and mod represents remainder.

[0207] In some embodiments, the sequence number of the first subgroup is determined based on RRC signaling or NAS signaling.

[0208] In some embodiments, the terminal devices in the first subgroup are determined based on the service type of the terminal devices and / or the frequency of being paged.

[0209] In some embodiments, the service type includes one or more of the following: eMBB, uRLLC, and mMTC.

[0210] Fig.11 It is a structural diagram of a wireless communication device provided in another embodiment of the present application. Fig.11 The wireless communication device 1100 may be a first terminal device. The wireless communication device 1100 includes a receiving module 1110 and a detecting module 1120.

[0211] The receiving module 1110 is used to receive a first PEI, where the first PEI includes multiple indication information, and the multiple indication information is used to indicate whether multiple subgroups perform paging detection, and the first terminal device belongs to the multiple subgroups.

[0212] The detection module 1120 is used to perform paging detection on one or more POs corresponding to the multiple indication information if one indication information among the multiple indication information indicates that the first terminal device needs to perform paging detection.

[0213] In some embodiments, the multiple POs include POs corresponding to paging messages initiated by the RAN and POs corresponding to paging messages initiated by the core network CN.

[0214] In some embodiments, the first terminal device is a terminal device in an RRC activated state.

[0215] Fig.12 It is a structural diagram of a wireless communication device provided in another embodiment of the present application. Fig.12 The wireless communication device 1200 may be a first terminal device. The wireless communication device 1200 includes a receiving module 1210.

[0216] The receiving module 1210 is used to receive first indication information, where the first indication information is used to indicate whether to turn on or off the PEI indication.

[0217] In some embodiments, the apparatus 1200 further includes a detection module 1220, configured to: detect PEI if the first indication information indicates to turn on PEI indication; and not detect PEI if the first indication information indicates to turn off PEI.

[0218] Fig.13 It is a structural diagram of a wireless communication device provided in another embodiment of the present application. Fig.13 The wireless communication device 1300 may be a base station. The wireless communication device 1300 includes a sending module 1310 and a determining module 1320.

[0219] The sending module 1310 is used to send a first PEI, the first terminal device belongs to a first subgroup and a second subgroup, and the first PEI is used to indicate whether the first subgroup and the second subgroup need to perform paging detection.

[0220] The determination module 1320 is used to determine whether the first terminal device performs paging detection based on an indication of whether a target subgroup in the first PEI needs to perform paging detection, and the target subgroup is the first subgroup and / or the second subgroup.

[0221] In some embodiments, the first subgroup is a first type of subgroup, and the second subgroup is a second type of subgroup.

[0222] In some embodiments, the first subgroup corresponds to a paging message initiated by a radio access network RAN, and the second subgroup corresponds to a paging message initiated by a core network CN.

[0223] In some embodiments, the target subgroup is predefined by a protocol or indicated by high-level signaling.

[0224] In some embodiments, the target subgroup is the first subgroup and the second subgroup, and the determination module 1320 is used to: if the first PEI indicates that any one of the first subgroup and the second subgroup needs to perform paging detection, then determine that the first terminal device performs paging detection; if the first PEI indicates that neither the first subgroup nor the second subgroup needs to perform paging detection, then determine that the first terminal device does not perform paging detection.

[0225] In some embodiments, the paging occasions PO corresponding to the first subgroup and the second subgroup are different.

[0226] In some embodiments, the first subgroup corresponds to a first PO, the second subgroup corresponds to a second PO, and the determination module 1320 is used to: if the first PEI indicates that any one of the first subgroup and the second subgroup needs to perform paging detection, then determine that the first terminal device performs paging detection on both the first PO and the second PO.

[0227] In some embodiments, the target subgroup is predefined by a protocol or indicated by high-level signaling.

[0228] In some embodiments, the target subgroup is the first subgroup, and the determination module 1320 is used to: if the first PEI indicates that the first subgroup needs to perform paging detection, determine that the first terminal device performs paging detection; if the first PEI indicates that the first subgroup does not need to perform paging detection, determine that the first terminal device does not perform paging detection.

[0229] In some embodiments, the target subgroup is the second subgroup, and the determination module 1320 is used to: if the first PEI indicates that the second subgroup needs to perform paging detection, determine that the first terminal device performs paging detection; if the first PEI indicates that the second subgroup does not need to perform paging detection, determine that the first terminal device does not perform paging detection.

[0230] In some embodiments, the sequence number of the first subgroup is determined based on RRC signaling.

[0231] In some embodiments, the sequence number of the second subgroup is determined based on NAS signaling.

[0232] In some embodiments, the terminal devices in the first subgroup and / or the second subgroup are determined based on the service type of the terminal devices and / or the frequency of being paged.

[0233] In some embodiments, the service type includes one or more of the following: eMBB, uRLLC, mMTC.

[0234] In some embodiments, the sequence number of the nth subgroup is:

[0235]

[0236] Wherein, UE_ID represents the identifier of the first terminal device, N nrepresents the number of paging frames in the paging cycle corresponding to the paging of the nth subgroup, Ns represents the number of POs in a paging frame, m represents the number of POs indicated in a PEI, m is a positive integer, G np It indicates the number of subgroups of the same type as the nth subgroup in the pth PO in the PO indicated by the first PEI, 1≤p≤m, n is 1 or 2, floor means rounding down, and mod means remainder.

[0237] In some embodiments, the sequence number of the nth subgroup is:

[0238] floor[floor(UE_ID / N n ) / (Ns / m)]mod(m*Gn)

[0239] Wherein, UE_ID represents the identifier of the first terminal device, N n It represents the number of paging frames in the paging cycle corresponding to the paging of the nth subgroup, Ns represents the number of paging opportunities in a paging frame, m represents the number of POs indicated in a PEI, m is a positive integer, Gn represents the number of subgroups in a PO that are of the same type as the nth subgroup, n is 1 or 2, floor represents rounding down, and mod represents remainder.

[0240] In some embodiments, the sending module 1310 is further used to: send first indication information to the first terminal device, where the first indication information is used to instruct the first terminal device to turn on or off the PEI indication.

[0241] In some embodiments, the first indication information is carried by one or more of the following information: system message, MAC layer signaling, RRC signaling, DCI or NAS signaling.

[0242] In some embodiments, the first terminal device is a terminal device in an RRC inactive state.

[0243] Fig.14 It is a structural diagram of a wireless communication device provided in another embodiment of the present application. Fig.14 The wireless communication device 1400 may be a base station. The wireless communication device 1400 includes a sending module 1410.

[0244] The sending module 1410 is used to send a first PEI, where the first PEI is used to indicate whether at least one subgroup needs to perform paging detection, and the at least one subgroup includes the first subgroup; the sequence number of the first subgroup is determined based on at least one of the following information: the ID of the first terminal device, the indication of the base station, and the indication of the core network device.

[0245] In some embodiments, the sequence number of the first subgroup is:

[0246]

[0247] Wherein, UE_ID represents 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 a paging frame, m represents the number of POs indicated in a PEI, m is a positive integer, G p It indicates the number of subgroups of the same type as the first subgroup in the p-th PO in the PO indicated by the first PEI, 1≤p≤m, floor means rounding down, and mod means finding the remainder.

[0248] In some embodiments, the sequence number of the first subgroup is:

[0249] floor[floor(UE_ID / N) / (Ns / m)]mod(m*G)

[0250] Among them, UE_ID represents 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 a paging frame, m represents the number of POs indicated in a PEI, m is a positive integer, G represents the number of subgroups in a PO that are of the same type as the first subgroup, floor represents rounding down, and mod represents remainder.

[0251] In some embodiments, the sequence number of the first subgroup is determined based on RRC signaling or NAS signaling.

[0252] In some embodiments, the terminal devices in the first subgroup are determined based on the service type of the terminal devices and / or the frequency of being paged.

[0253] In some embodiments, the service type includes one or more of the following: eMBB, uRLLC, and mMTC.

[0254] Fig.15 It is a structural diagram of a wireless communication device provided in another embodiment of the present application. Fig.15 The wireless communication device 1500 may be a base station. The wireless communication device 1500 includes a sending module 1510 and a determining module 1520.

[0255] The sending module 1510 is used to send a first PEI, where the first PEI includes multiple indication information, and the multiple indication information is used to indicate whether multiple subgroups perform paging detection, and the first terminal device belongs to the multiple subgroups.

[0256] The determination module 1520 is used to determine that the first terminal device performs paging detection on one or more POs corresponding to the multiple indication information if one indication information among the multiple indication information indicates that the first terminal device needs to perform paging detection.

[0257] In some embodiments, the multiple POs include POs corresponding to RAN initiated paging messages and POs corresponding to CN initiated paging messages.

[0258] In some embodiments, the first terminal device is a terminal device in an RRC activated state.

[0259] Fig.16 It is a structural diagram of a wireless communication device provided in another embodiment of the present application. Fig.16 The wireless communication device 1600 may be a base station. The wireless communication device 1600 includes a sending module 1610.

[0260] The sending module 1610 is used to send first indication information to the first terminal device, where the first indication information is used to indicate whether to turn on or off the PEI indication.

[0261] In some embodiments, the apparatus 1600 further includes a determination module 1620, configured to: if the first indication information indicates turning on the PEI indication, determine that the first terminal device detects the PEI; if the first indication information indicates turning off the PEI, determine that the first terminal device does not detect the PEI.

[0262] Fig.17 It is a schematic structural diagram of the device of an embodiment of the present application. Fig.17 The dotted line in the figure indicates that the unit or module is optional. The device 1700 can be used to implement the method described in the above method embodiment. The device 1700 can be a chip, a terminal device or a network device.

[0263] The device 1700 may include one or more processors 1710. The processor 1710 may support the device 1700 to implement the method described in the method embodiment above. The processor 1710 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 also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0264] The apparatus 1700 may further include one or more memories 1720. The memory 1720 stores a program, which can be executed by the processor 1710, so that the processor 1710 executes the method described in the above method embodiment. The memory 1720 may be independent of the processor 1710 or integrated in the processor 1710.

[0265] The apparatus 1700 may further include a transceiver 1730. The processor 1710 may communicate with other devices or chips through the transceiver 1730. For example, the processor 1710 may transmit and receive data with other devices or chips through the transceiver 1730.

[0266] The embodiment of the present application also provides a computer-readable storage medium for storing a program. The computer-readable storage medium can be applied to the wireless communication device provided in the embodiment of the present application, and the program enables the computer to execute the method performed by the terminal device or the base station in each embodiment of the present application.

[0267] The embodiment of the present application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to the terminal device or network device provided in the embodiment of the present application, and the program enables the computer to execute the method performed by the terminal device or base station in each embodiment of the present application.

[0268] The embodiment of the present application also provides a computer program. The computer program can be applied to the terminal device or network device provided in the embodiment of the present application, and the computer program enables a computer to execute the method executed by the terminal device or base station in each embodiment of the present application.

[0269] It should be understood that in the embodiment of the present application, "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should also be understood that determining B according to A does not mean determining B only according to A, and B can also be determined according to A and / or other information.

[0270] It should be understood that the term "and / or" in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0271] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean 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 the present application.

[0272] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0273] The 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, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0274] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0275] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium may be any available medium that can be read by a computer or a data storage device such as a server or data center that includes one or more available media integrated. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0276] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A wireless communication method, characterized in that: include: The first terminal device receives first indication information, where the first indication information is used to determine whether to turn on or off a paging advance indication PEI indication; If the first terminal device determines to turn off the PEI indication, the first terminal device does not detect the PEI, and performs paging detection on the determined paging opportunity PO.

2. The method according to claim 1, characterized in that The method further comprises: If the first terminal device determines to turn on the PEI indication, the first terminal device detects the PEI.

3. The method according to claim 2, characterized in that The method further comprises: The first terminal device determines whether to perform paging detection according to the indication in the PEI.

4. A wireless communication method, characterized in that: include: The base station sends first indication information to the first terminal device, where the first indication information is used to determine whether to turn on or off a paging advance indication PEI indication; Among them, if the first terminal device determines to turn off the PEI indication based on the first indication information, then the first indication information is used by the first terminal device to determine not to detect PEI and perform paging detection on the determined paging opportunity PO.

5. The method according to claim 4, characterized in that If the first terminal device determines to turn on the PEI indication based on the first indication information, the first indication information is used by the first terminal device to determine to detect the PEI.

6. A wireless communication device, characterized in that: The device is a first terminal device, and the device includes: A receiving module, configured to receive first indication information, wherein the first indication information is used to determine whether to turn on or off a paging advance indication PEI indication; The processing module is used for not detecting PEI if the first terminal device turns off the PEI indication, and performing paging detection on the determined paging opportunity PO.

7. The device according to claim 6, characterized in that The device also includes a detection module, which is used to: If the first terminal device determines to turn on the PEI indication, the PEI is detected.

8. The device according to claim 7, characterized in that The processing module is also used for: According to the indication in the PEI, it is determined whether to perform paging detection.

9. A wireless communication device, characterized in that: The device is a base station, and the device includes: A sending module, used to send first indication information to a first terminal device, where the first indication information is used to determine whether to turn on or off a paging advance indication PEI indication; Among them, if the first terminal device determines to turn off the PEI indication based on the first indication information, then the first indication information is used by the first terminal device to determine not to detect PEI and perform paging detection on the determined paging opportunity PO.

10. The device according to claim 9, characterized in that If the first terminal device determines to turn on the PEI indication based on the first indication information, the first indication information is used by the first terminal device to determine to detect the PEI.

11. A wireless communication device, characterized in that: The invention comprises a memory and a processor, wherein the memory is used to store a program, and the processor is used to call the program in the memory to execute the method according to any one of claims 1 to 5.

12. A wireless communication device, characterized in that: The invention comprises a processor, which is used to call a program from a memory to execute the method according to any one of claims 1 to 5.

13. A chip, characterized in that: The device comprises a processor, which is used to call a program from a memory so that a device equipped with the chip executes a method as claimed in any one of claims 1 to 5.

14. A computer-readable storage medium, characterized in that: A program is stored thereon, and the program enables a computer to execute the method according to any one of claims 1 to 5.

15. A computer program product, characterized in that The method comprises a program which causes a computer to execute the method according to any one of claims 1 to 5.

Images