Wireless communication method, terminal device, and network device

Abstract

Provided are a wireless communication method, a terminal device, and a network device. The method comprises: a terminal device acquires first information associated with a non transmission zone (NTZ), wherein the first information is used for indicating one or more of the following: the terminal device entering a geometric range of the NTZ; the terminal device leaving the geometric range of the NTZ; and a frequency range of the NTZ. In embodiments of the present application, the terminal device acquires the first information associated with the NTZ, and on the basis of the first information, the terminal device can conveniently determine whether to enter or leave the NTZ, thereby implementing an NTZ function.

Description

Wireless communication methods, terminal equipment and network equipment Technical Field

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

[0002] In some scenarios, uplink signals transmitted by terminal devices (e.g., unmanned aerial vehicles, UAVs) may interfere with other devices. Introducing a non-intrusive zone (NTZ) can help solve this problem. However, the terminal device may not be able to detect whether it has entered the NTZ, thus rendering the NTZ function unusable.

[0003] Summary of the Invention

[0004] This application provides a wireless communication method, terminal device, and network device. The various aspects covered by this application are described below.

[0005] In a first aspect, a wireless communication method is provided, comprising: a terminal device acquiring first information associated with a non-intrusive zone (NTZ), the first information indicating one or more of the following: the terminal device entering the geometric range of the NTZ; the terminal device leaving the geometric range of the NTZ; and the frequency range of the NTZ.

[0006] In a second aspect, a wireless communication method is provided, comprising: an access network device receiving a first request sent by the access layer of a terminal device for requesting Radio Resource Control (RRC) recovery or RRC re-establishment, wherein the first request is used to indicate that the reason for triggering the RRC recovery or RRC re-establishment is one or more of the following: the terminal device is unable to perform uplink transmission; the terminal device is unable to perform uplink transmission because it is located in a Non-Intrusive Zone (NTZ).

[0007] Thirdly, a terminal device is provided, comprising: an acquisition unit, configured to acquire first information associated with a non-intrusive zone (NTZ), the first information indicating one or more of the following: the terminal device entering the geometric range of the NTZ; the terminal device leaving the geometric range of the NTZ; and the frequency range of the NTZ.

[0008] Fourthly, a network device is provided, comprising: a receiving unit, configured to receive a first request sent by the access layer of a terminal device for requesting Radio Resource Control (RRC) recovery or RRC re-establishment, wherein the first request indicates that the reason for triggering the RRC recovery or RRC re-establishment is one or more of the following: the terminal device is unable to perform uplink transmission; the terminal device is unable to perform uplink transmission because it is located in a Non-Intrusive Zone (NTZ).

[0009] Fifthly, a terminal device is provided, including a processor, a memory, and a communication interface, wherein the memory is used to store one or more computer programs, and the processor is used to invoke the computer programs in the memory, causing the terminal device to perform some or all of the steps in the method of the first aspect.

[0010] In a sixth aspect, a network device is provided, including a processor, a memory, and a transceiver, wherein the memory is used to store one or more computer programs, and the processor is used to invoke the computer programs in the memory to cause the network device to perform some or all of the steps in the method of the second aspect.

[0011] Seventhly, embodiments of this application provide a communication system including the aforementioned terminal device and / or network device. In another possible design, the system may further include other devices that interact with the terminal device or network device as described in the embodiments of this application.

[0012] Eighthly, embodiments of this application provide a computer-readable storage medium storing a computer program that causes a communication device (e.g., a terminal device or a network device) to perform some or all of the steps in the methods described above.

[0013] Ninthly, embodiments of this application provide a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program operable to cause a communication device (e.g., a terminal device or a network device) to perform some or all of the steps of the methods described in the foregoing aspects. In some implementations, the computer program product may be a software installation package.

[0014] In a tenth aspect, embodiments of this application provide a chip including a memory and a processor, the processor being able to call and run a computer program from the memory to implement some or all of the steps described in the methods of the foregoing aspects.

[0015] In this embodiment, the terminal device acquires first information associated with the NTZ. This first information indicates one or more of the following: the terminal device enters the geometric range of the NTZ; the terminal device leaves the geometric range of the NTZ; and the frequency range of the NTZ. Based on this first information, the terminal device can determine whether it has entered or left the NTZ, thereby enabling the NTZ function. Attached Figure Description

[0016] Figure 1 shows the wireless communication system 100 used in an embodiment of this application.

[0017] Figure 2 is a schematic flowchart of cell discontinuous reception (cell_DRX).

[0018] Figure 3 is a schematic flowchart of a wireless communication method according to an embodiment of this application.

[0019] Figure 4 is an example diagram of the combination scheme of Embodiments 1 to 3 of this application.

[0020] Figure 5 is an example diagram of a combination scheme of another embodiment 1 to embodiment 3 of this application.

[0021] Figure 6 is a schematic diagram of a terminal device according to an embodiment of this application.

[0022] Figure 7 is a schematic diagram of a network device according to an embodiment of this application.

[0023] Figure 8 is a schematic structural diagram of a communication device according to an embodiment of this application. Detailed Implementation

[0024] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0025] Figure 1 illustrates a wireless communication system 100 according to an embodiment of this application. The wireless communication system 100 may include a network device 110 and a terminal device 120. The network device 110 may be a device that communicates with the terminal device 120. The network device 110 may provide communication coverage for a specific geographical area and may communicate with the terminal device 120 located within that coverage area.

[0026] Figure 1 illustrates an exemplary network device and two terminals. Optionally, the wireless communication system 100 may include multiple network devices, and each network device may include other terminal devices within its coverage area. This application embodiment does not limit this.

[0027] Optionally, the wireless communication system 100 may also include other network entities such as a network controller and a mobility management entity, which is not limited in this embodiment.

[0028] It should be understood that the technical solutions of the embodiments of this application can be applied to various communication systems, such as: 5th generation (5G) systems or new radio (NR), long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, etc. The technical solutions provided in this application can also be applied to future communication systems, such as 6th generation mobile communication systems, satellite communication systems, and so on.

[0029] The terminal device in this application embodiment can also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device. The terminal device in this application embodiment can be a device that provides voice and / or data connectivity to a user, and can be used to connect people, objects, and machines, such as a handheld device with wireless connectivity, vehicle-mounted device, etc. The terminal devices in the embodiments of this application can be mobile phones, tablets, laptops, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, self-driving, remote medical surgery, smart grids, transportation safety, smart cities, and smart homes, etc. Optionally, the UE can act as a base station. For example, the UE can act as a scheduling entity, providing sidelink signals between UEs in V2X or D2D, etc. For example, cellular phones and cars communicate with each other using sidelink signals. Cellular phones and smart home devices communicate without relaying communication signals through a base station.

[0030] The network device in this application embodiment can be a device for communicating with a terminal device. This network device can also be called an access network device or a wireless access network device, such as a base station. In this application embodiment, the network device can refer to a radio access network (RAN) node (or device) that connects the terminal device to the wireless network. A base station can broadly encompass, or be replaced by, various names including: NodeB, evolved NodeB (eNB), next-generation NodeB (gNB), relay station, access point, transmitting and receiving point (TRP), transmitting point (TP), master MeNB, secondary SeNB, multi-mode radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. A base station can be a macro base station, micro base station, relay node, donor node, or similar, or a combination thereof. A base station can also refer to a communication module, modem, or chip installed within the aforementioned equipment or apparatus. Base stations can also be mobile switching centers, devices that perform base station functions in device-to-device (D2D), vehicle-to-everything (V2X), and machine-to-machine (M2M) communications, network-side devices in 6G networks, and devices that perform base station functions in future communication systems. Base stations can support networks using the same or different access technologies. The embodiments of this application do not limit the specific technologies or device forms used in the network equipment.

[0031] Base stations can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move depending on the location of the mobile base station. In other examples, a helicopter or drone can be configured as a device to communicate with another base station.

[0032] In some deployments, the network device in this application embodiment may refer to a CU or a DU, or the network device may include both a CU and a DU. The gNB may also include an AAU.

[0033] Network devices and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can also be deployed in the air on airplanes, balloons, and satellites. This application does not limit the scenario in which the network devices and terminal devices are located.

[0034] It should be understood that all or part of the functions of the communication device in this application can also be implemented by software functions running on hardware, or by virtualization functions instantiated on a platform (e.g., a cloud platform).

[0035] To conserve power for access network equipment (e.g., base stations), Release 18 introduced network energy saving (NES) features. One way to save power is to set a time period during which access network equipment does not receive uplink signals from terminal devices, i.e., cell_DRX. Referring to Figure 2, the access network equipment pre-notifies the terminal device of the cell_DRX configuration. During this period, the access network equipment will not dynamically allocate physical uplink shared channel (PUSCH) resources to the terminal device, and the terminal device will not transmit uplink signals through pre-configured physical uplink control channel (PUCCH) (such as scheduling requests (SR) and channel state information (CSI) reporting) or PUSCH resources (such as configured grants (CG)). This allows the access network equipment to shut down its uplink reception circuitry, thereby saving power.

[0036] During cell_DRX, the relevant protocols also specify the behavior of the terminal device. If cell_DRX is enabled and the serving cell is not within the active period of cell_DRX, the terminal device may perform one or more of the following operations: not instruct the physical layer to send SR signals through the SR's PUCCH resources; not increment the SR_COUNTER; not start the SR's sr-ProhibitTimer; not pass any configured uplink grants and associated HARQ information to the hybrid automatic repeat-request (HARQ) entity; not instruct the HARQ procedure associated with the configured uplink grant to trigger new transmissions or retransmissions; not report periodic CSI and PUSCH-based semi-persistent CSI via PUCCH; if the upper layer initializes an emergency service and the serving cell is a special cell (SpCell), initialize the random access procedure (as described in Clause 5.11 of the 5G protocol). It should be noted that how the terminal device's medium access control (MAC) layer perceives ongoing emergency services depends on the terminal device's implementation.

[0037] However, in order to be compatible with terminal devices in versions prior to R18 of relevant protocols (e.g., 5G) and terminal devices in the idle state, the access network device can still receive the preamble during cell_DRX, and the terminal device will still send the preamble.

[0038] With the technological advancements in wireless cellular networks, related protocols (such as 5G) are incorporating UAVs into the network. UAVs can fly at low altitudes below 120 meters, providing services such as aerial photography and signal relay, and have important applications in scenarios such as large-scale celebrations and disaster relief.

[0039] In existing communication systems, UAVs are used as terminal devices to access the network. As a terminal device, a UAV can perform normal downlink reception and uplink transmission in a wireless network. However, as a special type of terminal device, a UAV has some characteristics that differ from ordinary terminal devices. The physical location of a UAV is relatively high, so the transmission path between the UAV and access network equipment (e.g., base stations) is usually a line-of-sight (LOS) path with low transmission loss. Furthermore, in urban areas where access network equipment is densely packed, if the UAV uses an omnidirectional antenna to transmit uplink signals, or uses a directional antenna (the performance of directional antennas is not ideal), the uplink signal transmitted by the UAV to access network equipment A can interfere with nearby access network equipment B / C / D, etc. If a UAV is used in disaster relief or similar scenarios, and its uplink signal has poor directionality, it can interfere with sensitive ground equipment (e.g., medical equipment).

[0040] To address the aforementioned issues, the Service and System Aspects Working Group 2 (SA2) of the 3rd Generation Partnership Project (3GPP) proposed the concept of NTZ. NTZ indicates that in certain areas and on certain frequencies, UAVs do not transmit uplink signals but can receive downlink signals normally, thereby ensuring the normal operation of other devices.

[0041] As mentioned above, in some scenarios, uplink signals sent by terminal devices (e.g., UAVs) may interfere with other devices. Introducing NTZ can help solve this problem. However, the terminal device may not be able to detect whether it has entered NTZ, thus preventing the NTZ function from being implemented.

[0042] For example, if the terminal device is a UAV, introducing NTZ (Near-Touch Zone) during UAV communication can help prevent UAVs from sending uplink signals that could interfere with other devices in urban areas or disaster relief scenarios. However, UAVs cannot detect whether they have entered an NTZ zone, which may cause them to send uplink signals when entering the NTZ zone, thus affecting the implementation of the NTZ function.

[0043] To address the aforementioned problems, embodiments of this application provide a wireless communication method in which a terminal device acquires first information associated with an NTZ (Network Telescope Zone). This first information indicates one or more of the following: the terminal device entering the geometric range of the NTZ; the terminal device leaving the geometric range of the NTZ; and the frequency range of the NTZ. Based on this first information, the terminal device can determine whether it has entered or left the NTZ, thereby enabling NTZ functionality.

[0044] The following describes a wireless communication method according to an embodiment of this application with reference to FIG3. FIG3 is a schematic flowchart of a wireless communication method according to an embodiment of this application. The method shown in FIG3 includes step S310.

[0045] In step S310, the terminal device obtains the first information associated with the NTZ.

[0046] Because NTZ involves RAN support, SA2, which proposed the NTZ concept, hoped that RAN could assist in the standardization of NTZ, but RAN refused. Therefore, the access layer of traditional terminal equipment does not support obtaining first information.

[0047] To address this issue, in some implementations, the first information is provided by the terminal device's non-access layer to the terminal device's access layer; in other words, the terminal device's non-access layer provides the first information to the terminal device's access layer. Correspondingly, the terminal device's access layer obtains the first information associated with NTZ from the terminal device's non-access layer. The terminal device's non-access layer providing the first information helps to implement NTZ functionality without increasing the number of access layer interface messages. In some implementations, the terminal device's non-access layer provides the first information to the terminal device's access layer through inter-layer primitives; in other words, the terminal device's non-access layer notifies the terminal device's access layer of the first information through inter-layer primitives.

[0048] In some implementations, the first information is associated with the NTZ, which can be understood as the first information being determined based on the NTZ. The following describes a method for determining the first information by the non-access stratum of a terminal device, with reference to Embodiment 1.

[0049] Example 1: The non-access layer of the terminal device determines the first information.

[0050] In some implementations, the first information is determined based on NTZ, which can be understood as the first information being determined by the non-access layer of the terminal device based on NTZ information.

[0051] In some implementations, NTZ information is determined based on messages provided by the core network equipment, or in other words, the core network equipment provides NTZ information to the non-access stratum of the terminal equipment.

[0052] In some implementations, NTZ information is determined based on messages provided by the core network device. This can be understood as determining NTZ information based on non-access stratum (NAS) messages sent by the core network device. In other words, NTZ information is carried in NAS messages sent by the core network device to the terminal device's NAS, or the core network device provides NTZ information to the terminal device's NAS via NAS messages. For example, if the terminal device has registered with the core network device (i.e., has completed the attach process), and the core network device knows the terminal device's tracking area (TA) location, the core network device's access and mobility management function (AMF) element can provide NTZ information to the terminal device's NAS via NAS messages.

[0053] In some implementations, NTZ information is determined based on messages provided by the core network device. This can be understood as the NTZ information being determined based on system messages sent by the core network device to the non-access stratum of the terminal device through the access network device. In other words, the NTZ information is carried on system messages sent by the core network device to the non-access stratum of the terminal device through the access network device, or the core network device provides NTZ information to the non-access stratum of the terminal device through system messages sent by the access network device. For example, if the terminal device has not registered with the core network device (i.e., has not undergone the attach procedure), the AMF (Active Network Function) element of the core network device can provide NTZ information to the access network device. The access network device does not parse the NTZ information but transmits it to the access stratum of the terminal device through a system information block (SIB) message. The access stratum of the terminal device obtains the NTZ information from the SIB message and submits it to the non-access stratum of the terminal device.

[0054] In some implementations, NTZ information is indicated by the core network device to the non-access stratum of the terminal device in one or more of the following processes: registration process initiated by the terminal device; service request process initiated by the terminal device; TA update process initiated by the terminal device.

[0055] In some implementations, the core network device indicates NTZ information to the non-access stratum of the terminal device during the registration process initiated by the terminal device. This can be understood as the core network device providing NTZ information to the non-access stratum of the terminal device when the terminal device initiates the registration process.

[0056] In some implementations, the core network device indicates NTZ information to the non-access stratum of the terminal device during the service request process initiated by the terminal device. This can be understood as the core network device providing NTZ information to the non-access stratum of the terminal device when the terminal device initiates the service request process.

[0057] In some implementations, the core network device indicates NTZ information to the non-access stratum of the terminal device during the TA update (timing advance update) process initiated by the terminal device. This can be understood as the core network device providing NTZ information to the non-access stratum of the terminal device when the terminal device initiates the TA update process.

[0058] In some implementations, NTZ information is determined based on the pre-configuration information of the terminal device.

[0059] In some implementations, the pre-configured information of the terminal device includes NTZ information. For example, the NTZ information is pre-stored in the terminal device's memory when it leaves the factory.

[0060] In some implementations, NTZ information is used to indicate one or more NTZs.

[0061] In some implementations, the NTZ indicated by the NTZ information is located within the TA where the terminal device is located.

[0062] In some implementations, the NTZ indicated by the NTZ information is located within one or more TAs adjacent to the TA where the terminal device is located.

[0063] In some implementations, the NTZ indicated by the NTZ information is located within the TA where the terminal device is located and within one or more TAs adjacent to the TA where the terminal device is located.

[0064] In some implementations, the aforementioned multiple NTZs can be multiple discontinuous NTZs within the TA range. Of course, in the embodiments of this application, the multiple NTZs can also be multiple consecutive NTZs.

[0065] In some implementations, when a terminal device initiates a registration process or a service process, the core network device indicates NTZ information to the non-access stratum of the terminal device. The NTZ information indicates one or more discontinuous NTZs located within the TA where the terminal device is located and / or within one or more TAs adjacent to the TA where the terminal device is located.

[0066] In some implementations, when a terminal device initiates a TA update process, the core network device indicates NTZ information to the non-access stratum of the terminal device. The NTZ information indicates one or more discontinuous NTZs located within the TA where the terminal device is located.

[0067] In some implementations, the NTZ information includes information indicating the geometric range of the NTZ and / or information indicating the frequency range of the NTZ. For example, referring to Table 1, the NTZ information indicates NTZ1 and NTZ2, and includes information indicating the geometric range of NTZ1 and NTZ2 and information indicating the frequency range of NTZ1 and NTZ2.

[0068] Table 1

[0069] In some implementations, the geometric extent of the NTZ is also referred to as the "special region" mentioned above.

[0070] In some implementations, the geometric extent of the NTZ can be all or part of one or more cells.

[0071] In some implementations, the geometry of NTZ can be a horizontal region, i.e., a two-dimensional (2D) concept.

[0072] In some other implementations, the geometry of NTZ can be a three-dimensional region, i.e., a three-dimensional (3D) concept.

[0073] In some implementations, the information used to indicate the geometric extent of the NTZ includes one or more of the following: the coordinates of the center point of the NTZ; the radius of the NTZ; and the height of the NTZ.

[0074] In some implementations, the information used to indicate the geometric extent of the NTZ includes the coordinates of the center point of one or more NTZs and the radius of one or more NTZs.

[0075] In some implementations, the information used to indicate the geometric extent of an NTZ includes the coordinates of one or more center points of the NTZ and the radii of one or more NTZs, wherein the geometric extent of the NTZ is a circular region within one or more horizontal planes. For example, the information used to indicate the geometric extent of NTZ1 includes the coordinates of the center points of two NT1Zs and the radii of two NTZ1s, wherein the geometric extent of NTZ1 is a circular region within two horizontal planes.

[0076] In some implementations, the circular regions within the aforementioned multiple horizontal planes overlap, and the geometric extent of NTZ is the union of these circular regions. For example, the information used to indicate the geometric extent of NTZ1 includes the coordinates of the center points of two NTZ1s and the radius of one NTZ1. The geometric extent of NTZ1 is a circular region within two horizontal planes, and these circular regions overlap. The various extents of NTZ1 are then the union of these circular regions within the two horizontal planes.

[0077] In other implementations, the information used to indicate the geometric extent of an NTZ includes the coordinates of one or more center points of the NTZ and the radius of one or more NTZs, wherein the geometric extent of the NTZ is one or more spherical regions. For example, the information used to indicate the geometric extent of NTZ2 includes the coordinates of the center points of two NTZ2s and the radius of one NTZ2, wherein the geometric extent of NTZ2 is two spherical regions.

[0078] In some implementations, the aforementioned multiple spherical regions overlap, and the geometric extent of NTZ is the union of these spherical regions; that is, the geometric extent of NTZ is an irregular body. For example, the information used to indicate the geometric extent of NTZ2 includes the coordinates of the center points of two NTZ2 regions and the radius of NTZ2. The geometric extent of NTZ2 consists of two overlapping spherical regions, and the various extents of NTZ2 are the union of these two spherical regions.

[0079] In some implementations, the information used to indicate the geometric extent of the NTZ includes the coordinates of the center point of one or more NTZs, the radius of one or more NTZs, and the height of one or more NTZs.

[0080] In some implementations, the information used to indicate the geometric extent of an NTZ includes the coordinates of the center points of one or more NTZs, the radii of one or more NTZs, and the heights of one or more NTZs, wherein the geometric extent of an NTZ is one or more cylindrical regions. For example, the coordinates of the center points of two NTZ3s, the radius of one NTZ3, and the heights of two NTZ3s are used to indicate the geometric extent of an NTZ3, which is two cylindrical regions.

[0081] In some implementations, the aforementioned cylindrical regions overlap, and the geometric extent of NTZ is the union of these cylindrical regions. For example, the information used to indicate the geometric extent of NTZ3 includes the coordinates of the center points of two NTZ3s, the radius of one NTZ3, and the heights of the two NTZ3s. The geometric extent of NTZ3 is two cylindrical regions that overlap, and the several extents of NTZ3 are the union of the two cylindrical regions.

[0082] In some implementations, the NTZ frequency range is also referred to as the "specific frequency point" mentioned above.

[0083] In some implementations, the information used to indicate the frequency range of the NTZ includes frequency point information of one or more NTZs, and / or information on the frequency offset values ​​of one or more NTZs.

[0084] In some implementations, if two NTZs have the same geometric range but different frequency ranges, the two NTZs are different NTZs, or in other words, the two NTZs are independent NTZs. For example, if NTZ1 and NTZ2 have the same geometric range but different frequency ranges, then NTZ1 and NTZ2 are different NTZs. Alternatively, if NTZ1 and NTZ2 have the same geometric range and the same frequency range, then NTZ1 and NTZ2 are the same NTZ.

[0085] In some implementations, the first information is used to indicate one or more of the following: the terminal device enters the geometric range of the NTZ; the terminal device leaves the geometric range of the NTZ; the frequency range of the NTZ.

[0086] In some implementations, the first information is used to indicate the geometric range of the NTZ (Non-Access Zone). For example, the geometric range of NTZ1 is the union of multiple cylindrical regions, and the first information is used to indicate that the terminal device enters the union of multiple cylindrical regions. As another example, NTZ information is used to indicate NTZ1 and NTZ2, and the non-access layer of the terminal device determines the geometric range of NTZ1 based on the NTZ information, while the first information indicates that the terminal device enters the geometric range of the NTZ.

[0087] In some implementations, the first information is used to indicate where the terminal device leaves the geometric range of the NTZ. For example, the geometric range of NTZ1 is the union of multiple cylindrical regions, and the first information is used to indicate where the terminal device leaves the union of multiple cylindrical regions. As another example, NTZ information is used to indicate NTZ1 and NTZ2, and the non-access layer of the terminal device determines where the terminal device leaves the geometric range of all NTZ1 based on the NTZ information, with the first information indicating where the terminal device leaves the geometric range of the NTZ.

[0088] In some implementations, the non-access stratum of the terminal device determines whether the terminal device has entered or left the geometric area of ​​the NTZ based on the positioning results of the positioning module. For example, NTZ information is used to indicate NTZ1 and NTZ2. Initially, the terminal device's location is not within the geometric areas of NTZ1 and NTZ2. After the terminal device moves, the positioning module's positioning results indicate that the terminal device's location is within the geometric areas of NTZ1 or NTZ2, and the terminal device's non-access stratum determines that the terminal device has entered the geometric area of ​​the NTZ. As another example, if NTZ information indicates NTZ1 and NTZ2, and the terminal device's location is within the geometric areas of NTZ1 or NTZ2, after the terminal device moves, the positioning module's positioning results indicate that the terminal device's location is not within any of the geometric areas of NTZ1 and NTZ2, and the terminal device's non-access stratum determines that the terminal device has left the geometric area of ​​the NTZ.

[0089] In some implementations, the aforementioned positioning module may be a Global Positioning System (GPS) module, a Global Navigation Satellite System (GNSS) module, or other positioning modules.

[0090] In some implementations, the first information is used to indicate the frequency range of the NTZ.

[0091] In some implementations, the first information indicates the frequency range of the NTZ by carrying the frequency point information of the NTZ. For example, the NTZ information includes information for indicating the frequency range of the NTZ, and the information for indicating the frequency range of the NTZ includes one or more NTZ frequency point information. The first information indicates the frequency range of one or more NTZs by carrying the frequency point information of one or more NTZs.

[0092] In some implementations, the frequency range of the NTZ indicated by the first information is associated with the NTZ corresponding to the geometric range in which the terminal device enters or leaves the NTZ indicated by the first information. For example, if the NTZ information indicates NTZ1 and NTZ2, the non-access stratum of the terminal device determines that the terminal device enters the geometric range of NTZ1, and therefore determines that the first information indicates that the terminal device enters the geometric range of the NTZ, and the frequency range of the NTZ indicated by the first information is the frequency range of NTZ1. As another example, if the NTZ information indicates NTZ1 and NTZ2, the non-access stratum of the terminal device determines that the terminal device leaves the geometric range of NTZ1, and therefore determines that the first information indicates that the terminal device leaves the geometric range of the NTZ, and the frequency range of the NTZ indicated by the first information is the frequency range of NTZ1.

[0093] Example 2: The terminal device determines whether it enters or leaves the NTZ.

[0094] In some implementations, the first information is used to determine whether the terminal device enters or leaves the NTZ.

[0095] In some implementations, the first information is used to determine whether the terminal device enters or leaves the NTZ. This can be understood as follows: if the first information indicates that the terminal device enters the geometric range of the NTZ, and the frequency range of the NTZ matches the frequency range of the cell corresponding to the terminal device, then it can be determined that the terminal device has entered the NTZ. In other words, if the terminal device enters the NTZ, the first information indicates that the terminal device has entered the geometric range of the NTZ, and the frequency range of the NTZ matches the frequency range of the cell corresponding to the terminal device.

[0096] In some implementations, the cell corresponding to the terminal device can be the serving cell of the terminal device; that is, the cell corresponding to the terminal device can be the cell that the terminal device is currently connected to and can receive services from.

[0097] In some other implementations, the cell corresponding to the terminal device can be the cell where the terminal device is currently camped; that is, the cell corresponding to the terminal device can be the cell where the terminal device is currently camped.

[0098] In some implementations, the frequency range of the NTZ matches the frequency range of the cell corresponding to the terminal device. This can be understood as the NTZ frequency point being consistent with the frequency point of the serving cell of the terminal device, or the NTZ frequency point being the same as the serving cell frequency point of the terminal device, or the serving cell frequency point of the terminal device belonging to the NTZ frequency range.

[0099] In some implementations, the frequency range of the NTZ matches the frequency range of the cell corresponding to the terminal device. This can be understood as the NTZ frequency point being consistent with the frequency point of the cell where the terminal device is camped, or the NTZ frequency point being the same as the frequency point of the cell where the terminal device is camped, or the frequency point of the cell where the terminal device is camped belonging to the NTZ frequency range.

[0100] In some implementations, the first information is used to indicate the frequency range of the NTZ. Whether the frequency range of the NTZ matches the frequency range of the cell corresponding to the terminal device is determined by the access layer of the terminal device based on the first information. For example, the first information carries the frequency point of the NTZ. The access layer of the terminal device obtains the frequency point of the cell corresponding to the terminal device and determines whether the frequency range of the NTZ matches the frequency range of the cell corresponding to the terminal device based on the first information and the frequency point of the cell corresponding to the terminal device.

[0101] In some implementations, the access layer of the terminal device provides the frequency range of the cell corresponding to the terminal device to the non-access layer of the terminal device. Whether the frequency range of the NTZ matches the frequency range of the cell corresponding to the terminal device is determined by the non-access layer of the terminal device based on the NTZ information and the frequency range of the cell corresponding to the terminal device. For example, the NTZ information includes information indicating the frequency range of the NTZ. The access layer of the terminal device obtains the frequency point of the cell corresponding to the terminal device and provides it to the non-access layer of the terminal device through inter-layer primitives. The non-access layer of the terminal device determines whether the frequency range of the NTZ matches the frequency range of the cell corresponding to the terminal device based on the NTZ information and the frequency point of the cell corresponding to the terminal device.

[0102] In some other implementations, the first information is used to determine whether the terminal device enters or leaves the NTZ. This can be understood as follows: if the first information indicates that the terminal device leaves the geometric range of the NTZ, then it can be determined that the terminal device has left the NTZ. In other words, if the terminal device leaves the NTZ, then the first information indicates that the terminal device has left the geometric range of the NTZ.

[0103] In some implementations, the access layer of the terminal device determines whether the terminal device enters or leaves the NTZ based on first information. For example, the access layer of the terminal device obtains first information provided by the non-access layer of the terminal device, which indicates the geometric range and frequency range of the NTZ into which the terminal device enters. Based on the first information, the access layer determines that the frequency range of the NTZ matches the frequency range of the cell corresponding to the terminal device, and thus determines that the terminal device has entered the NTZ. As another example, the access layer of the terminal device obtains first information provided by the non-access layer of the terminal device, which indicates that the terminal device has left the geometric range of the NTZ. Based on the first information, the access layer determines that the terminal device has left the NTZ.

[0104] In other implementations, the non-access stratum of the terminal device determines whether the terminal device enters or leaves the NTZ. For example, NTZ information includes information indicating the geometric range of the NTZ and information indicating the frequency range of the NTZ. The non-access stratum of the terminal device determines the geometric range within which the terminal device enters the NTZ based on the NTZ information. Simultaneously, the non-access stratum of the terminal device obtains the frequency range of the cell corresponding to the terminal device provided by the access stratum of the terminal device, and based on the NTZ information and the frequency range of the cell corresponding to the terminal device, determines that the frequency range of the NTZ matches the frequency range of the cell corresponding to the terminal device, thereby determining that the terminal device has entered the NTZ. As another example, NTZ information includes information indicating the geometric range of the NTZ and information indicating the frequency range of the NTZ. The non-access stratum of the terminal device determines the geometric range within which the terminal device leaves the NTZ based on the NTZ information, thereby determining that the terminal device has left the NTZ.

[0105] Example 3: The terminal device performs corresponding operations based on the first information and / or when the terminal device enters or leaves the NTZ.

[0106] Implementation method 3-1: If the terminal device enters NTZ, the non-access layer of the terminal device performs the first operation.

[0107] In some implementations, the first operation includes one or more of the following: not initiating an emergency call; not generating a NAS message; not providing a NAS message to the access layer of the terminal device; and instructing the application layer of the terminal device not to send service data.

[0108] In some implementations, the first operation includes not initiating an emergency call, which can be understood as the non-access layer of the terminal device not initiating a request for an emergency call (such as 119, 110, or 120).

[0109] In some implementations, the first operation includes not generating NAS messages, which can be understood as the non-access layer of the terminal device not generating NAS messages to send to the core network device.

[0110] In some implementations, the first operation includes not providing NAS messages to the access layer of the terminal device. This can be understood as the non-access layer of the terminal device not sending NAS messages to the core network device through the access layer of the terminal device, or in other words, the non-access layer of the terminal device not submitting NAS messages to the radio resource control (RRC) layer of the terminal device.

[0111] In some implementations, the first operation includes instructing the application layer of the terminal device not to send service data. This can be understood as the non-access layer of the terminal device notifying the application layer application (APP) not to send service data.

[0112] Implementation method 3-2: If the terminal device is in an idle or inactive state and enters NTZ, the access layer of the terminal device performs the second operation.

[0113] In some implementations, the second operation includes one or more of the following: not initiating random access in the terminal device's registered cell; lowering the priority of the terminal device's registered cell; and accessing a first cell, which is different from the terminal device's registered cell.

[0114] In some implementations, the priority of the cell where the terminal device camps can be understood as the cell reselection priority corresponding to the cell where the terminal device camps.

[0115] In some implementations, the terminal device obtains the cell reselection priority through system messages sent by the network device. For example, cellReselectionPriority is used to indicate the cell reselection priority. CellReselectionPriority is carried in SIB2 sent by the network device to the terminal device. CellReselectionPriority is an integer between 0 and 7. The terminal device obtains cellReselectionPriority through SIB2 and stores it in memory. The terminal device can adjust (decrease or increase) the value of cellReselectionPriority.

[0116] In some implementations, the first cell is different from the cell where the terminal device is camped. This can be understood as the carrier of the first cell being different from the carrier of the cell where the terminal device is camped.

[0117] In some implementations, the second operation includes not initiating random access in the cell where the terminal device is currently camped. This can be understood as the access layer of the terminal device not sending messages for random access in the cell where the terminal device is currently camped. For example, the access layer of the terminal device does not send random access message 1 (msg1) or message A (msg A) to the access network device in the cell where the terminal device is currently camped.

[0118] In some implementations, the second operation includes lowering the priority of the cell the terminal device is currently camped on. This can be understood as the access layer of the terminal device lowering the cell reselection priority value corresponding to the cell the terminal device is currently camped on. For example, if cellReselectionPriority is used to indicate the cell reselection priority, and the value of cellReselectionPriority corresponding to the currently camped cell stored by the terminal device is 7, the access layer of the terminal device performs the second operation, lowering the value of cellReselectionPriority corresponding to the currently camped cell to 6.

[0119] In some implementations, the second operation includes accessing a first cell different from the terminal device's current cell. This can be understood as the terminal device's access layer reselecting to another cell different from its currently used cell. For example, if the terminal device's current cell is cell A, and the first cell is cell B, and cell A and cell B have different carriers, the terminal device's access layer can access cell B.

[0120] In implementation method 3-3: If the terminal device is in an idle or inactive state and leaves the NTZ, the access layer of the terminal device performs the third operation.

[0121] In some implementations, the third operation includes one or more of the following: canceling the second operation; initiating random access in the terminal device's camp cell.

[0122] In some implementations, the second operation includes initiating random access in the cell where the terminal device is currently camped, and the third operation includes canceling the second operation. This can be understood as the access layer of the terminal device choosing to initiate random access in the cell where it is currently camped.

[0123] In some implementations, the second operation includes lowering the priority of the cell where the terminal device is currently camped, and the third operation includes canceling the second operation. This can be understood as the access layer of the terminal device not lowering the priority of the cell where the terminal device is currently camped.

[0124] In some implementations, the second operation includes accessing a first cell that is different from the cell where the terminal device is registered, and the third operation includes canceling the second operation. This can be understood as the access layer of the terminal device not accessing the first cell that is different from the cell where the terminal device is registered.

[0125] In some implementations, the third operation includes initiating random access in the cell where the terminal device is currently camped. This can be understood as the access layer of the terminal device sending a message for random access in the cell where the terminal device is currently camped. For example, the access layer of the terminal device sends a random access message 1 to the access network device in the cell where the terminal device is currently camped.

[0126] Implementation method 3-4: If the terminal device is in an idle state and leaves the NTZ, the access layer of the terminal device performs the fourth operation.

[0127] In some implementations, the fourth operation includes increasing the priority of the frequency point corresponding to NTZ.

[0128] In some implementations, the priority of the frequency point corresponding to the NTZ can be understood as the cell reselection priority of the cell associated with the frequency point corresponding to the NTZ.

[0129] In some implementations, the cell associated with the frequency point corresponding to NTZ can be understood as a cell with the same frequency point as the frequency point corresponding to NTZ, or a cell whose frequency point belongs to the frequency range of NTZ.

[0130] In some implementations, the fourth operation includes increasing the priority of the frequency point corresponding to the NTZ. This can be understood as the terminal device's access layer increasing the cell reselection priority of the cell associated with the frequency point corresponding to the NTZ. For example, if cellReselectionPriority is used to indicate the cell reselection priority, and the value of cellReselectionPriority for the cell associated with the frequency point corresponding to the NTZ is 6, the terminal device's access layer performs the fourth operation, increasing the value of cellReselectionPriority for the cell associated with the frequency point corresponding to the NTZ to 7.

[0131] In some implementations, if the terminal device is in an idle state, leaves the NTZ, and the frequency range of the NTZ does not match the frequency range of the cell corresponding to the terminal device, the access layer of the terminal device performs a fourth operation, which includes increasing the priority of the frequency point corresponding to the NTZ.

[0132] In some implementations, the frequency range of the NTZ does not match the frequency range of the cell corresponding to the terminal device. This can be understood as the NTZ frequency point being different from the frequency point of the cell where the terminal device is currently camped, or in other words, the frequency point of the cell where the terminal device is currently camped does not belong to the NTZ frequency range.

[0133] Implementation method 3-5: If the terminal device is in the connected state and enters NTZ, the access layer of the terminal device performs the fifth operation.

[0134] In some implementations, the fifth operation includes one or more of the following: not sending an uplink signal when the timing advance timer (TAT) is running and has not timed out; assuming that the TAT has timed out; and not initiating random access within the serving cell of the terminal device.

[0135] In some implementations, the fifth operation includes not sending an uplink signal while the TAT is running and has not timed out. This can be understood as the TAT continuing to run, and the access layer of the terminal device not sending an uplink signal to the access network device before the TAT times out.

[0136] In some implementations, the fifth operation includes considering the TAT to have timed out. This can be understood as the terminal device's access layer considering the TAT to have timed out even if the TAT has not timed out, and then performing the corresponding processing for the TAT timeout.

[0137] In some implementations, the fifth operation includes not initiating random access in the serving cell of the terminal device. This can be understood as the terminal device's access layer not sending messages for random access to the access network device in the terminal device's serving cell, regardless of whether the TAT has timed out.

[0138] In some implementations, the fifth operation includes considering the TAT to have timed out and not initiating random access within the serving cell of the terminal device. This can be understood as follows: even if the TAT has not timed out, the terminal device's access layer considers the TAT to have timed out and does not send the message for random access to the terminal device's current serving cell. For example, if the terminal device's non-access layer determines that the terminal device has entered the NTZ, and the terminal device's access layer receives an indication that the terminal device has entered the NTZ, then even if the TAT has not timed out, the terminal device's access layer considers the TAT to have timed out and does not send message 1 or message A for random access to the access network device in the terminal device's current serving cell.

[0139] Implementation method 3-6: If the terminal device is in a connected state and the first information indicates that the terminal device has entered the geometric region of the NTZ, the access layer of the terminal device performs the sixth operation.

[0140] In some implementations, the sixth operation includes starting the first timer.

[0141] In some implementations, the duration of the first timer is indicated by the non-access layer of the terminal device.

[0142] In some implementations, the duration of the first timer can be predefined. For example, the protocol specifies the duration of the first timer.

[0143] In some implementations, if the access layer of the terminal device does not receive an indication that the terminal device has left the geometric region of the NTZ before the first timer expires, the sixth operation also includes the terminal device entering the idle state from the connected state.

[0144] In some implementations, the indication of leaving the geometric region of the NTZ can be the first information. For example, when the terminal device is in a connected state and enters the NTZ, the access layer of the terminal device starts a first timer. Before the first timer expires, if the access layer of the terminal device does not receive the first information indicating that the terminal device has left the geometric region of the NTZ, the terminal device enters the idle state from the connected state.

[0145] Implementation method 3-7: If the terminal device is in a connected state and leaves the NTZ, the access layer of the terminal device performs the seventh operation.

[0146] In some implementations, the seventh operation includes initiating random access in response to uplink data to be transmitted.

[0147] In some implementations, the uplink data to be sent can be understood as the uplink data to be sent that arrives at the access layer of the terminal device, or the uplink data in the access layer cache of the terminal device.

[0148] In some implementations, the uplink data to be sent is also referred to as "uplink data to be transmitted".

[0149] In some implementations, in response to uplink data to be sent, random access is initiated. This can be understood as the terminal device's access layer sending a message for random access in the current serving cell if the terminal device has uplink data to be sent.

[0150] Implementation method 3-8: If the terminal device is configured with conditional handover, the access layer of the terminal device determines whether to perform handover based on the first information.

[0151] In some implementations, if the first information indicates that the terminal device has entered the geometric range of the NTZ, the access layer of the terminal device, before performing conditional handover, determines whether to initiate random access in the target cell based on the frequency range of the NTZ indicated by the first information. The target cell is a cell that meets the handover conditions in the conditional handover. That is, if the terminal device is configured for conditional handover, and the first information indicates that the terminal device has entered both the geometric range and frequency range of the NTZ, the access layer of the terminal device, before performing conditional handover, determines whether to initiate random access in the target cell that meets the handover conditions based on the frequency range of the NTZ indicated by the first information.

[0152] In some implementations, the access layer of the terminal device determines whether to initiate random access in the target cell based on the frequency range of the NTZ indicated by the first information. This can be understood as follows: if the frequency range of the target cell matches the frequency range of the NTZ, the access layer of the terminal device determines not to perform conditional handover and not to initiate random access in the target cell.

[0153] In some implementations, the frequency range of the target cell matches the frequency range of the NTZ. This can be understood as the target cell's frequency point being the same as the NTZ's frequency point, or in other words, the target cell's frequency point belonging to the NTZ's frequency range.

[0154] In some implementations, the access layer of the terminal device determines whether to initiate random access in the target cell based on the frequency range of the NTZ indicated by the first information. This can be understood as follows: if the frequency range of the target cell does not match the frequency range of the NTZ, the access layer of the terminal device determines to perform conditional handover and initiate random access in the target cell.

[0155] In some implementations, the frequency range of the target cell does not match the frequency range of the NTZ. This can be understood as the target cell's frequency point being different from the NTZ's frequency point, or in other words, the target cell's frequency point not belonging to the NTZ's frequency range.

[0156] In some implementations, the non-access stratum of the terminal device provides the updated first information to the access stratum of the terminal device. The updated first information indicates that the terminal device leaves the geometric range of the NTZ, and the access stratum of the terminal device performs conditional handover to access or not access the target cell.

[0157] In some implementations, the access layer of the terminal device receives the updated first information and determines whether to perform conditional handover access or not access the target cell based on the conditions in the conditional handover.

[0158] In some implementations, the access layer of the terminal device determines whether to perform conditional handover to access or not access the target cell based on the handover conditions in conditional handover. This can be understood as follows: if the target cell still meets the handover conditions in conditional handover, the access layer of the terminal device determines to perform conditional handover and access the target cell.

[0159] In some implementations, the access layer of the terminal device determines whether to perform conditional handover to access or not to access the target cell based on the handover conditions in conditional handover. This can be understood as follows: if the target cell no longer meets the handover conditions in conditional handover, the access layer of the terminal device determines not to perform conditional handover and not to access the target cell.

[0160] Implementation method 3-9: If the terminal device has not registered with the core network device, the access layer of the terminal device determines whether to initiate random access based on whether the terminal device enters or leaves the NTZ.

[0161] In some implementations, if the terminal device does not register with the core network device and enters the NTZ, the access layer of the terminal device will not initiate random access in the cell where the terminal device is registered.

[0162] In some implementations, if the terminal device has not registered with the core network device and leaves the NTZ, the access layer of the terminal device initiates random access in the cell where the terminal device is camped.

[0163] In some implementations, if the access layer of the terminal device does not initiate anytime access in the cell where the terminal device is camped, the access layer of the terminal device accesses a second cell, and the frequency range of the second cell does not match the frequency range of the NTZ.

[0164] In some implementations, the frequency range of the second cell does not match the frequency range of the NTZ. This can be understood as the frequency point of the second cell being different from the frequency point of the NTZ, or in other words, the frequency point of the second cell not belonging to the frequency range of the NTZ.

[0165] Implementation method 3-10: The access layer of the terminal device sends the first request to the access network device.

[0166] In some implementations, the first request is used to request RRC recovery or RRC re-establishment. For example, the first request could be an RRCReestablishmentRequest message used to request RRC re-establishment. As another example, the first request could be an RRCResumeRequest message used to request RRC recovery.

[0167] In some implementations, the first request is used to indicate one or more of the following reasons for triggering RRC recovery or RRC re-establishment: the terminal device is unable to perform uplink transmission; the terminal device is unable to perform uplink transmission because it is located in the NTZ. Accordingly, the access network device receives the first request and can know the reason for the terminal device triggering RRC recovery or RRC re-establishment based on the first request, which helps the access network device to reasonably allocate uplink resources to the terminal device.

[0168] In some implementations, the first request is triggered based on a first condition, which includes one or more of the following: first information instructing the terminal device to leave the geometric range of the NTZ; or the first timer that was started when the terminal device obtains the first information instructing the terminal device to enter the geometric range of the NTZ times out.

[0169] In some implementations, the first request is triggered based on a first condition. This first condition includes first information indicating that the terminal device has left the geometric range of the NTZ. This can be understood as follows: if the access layer of the terminal device receives the first information indicating that the terminal device has left the geometric range of the NTZ, the access layer of the terminal device sends a first request to the access network device. For example, if the terminal device is in an inactive state, and its access layer receives the first information indicating that the terminal device has left the geometric range of the NTZ, the access layer can send a first request to the access network device. This first request is used to request RRC recovery, and the first request indicates that the reason for triggering RRC recovery is that the terminal device is unable to perform uplink transmission because it is located in the NTZ.

[0170] In some implementations, the first request is triggered based on a first condition. This first condition includes a first message indicating that the terminal device has left the geometric range of the NTZ and a first timer timeout. This can be understood as follows: if the first timer started by the terminal device in the connected state times out, and the first message indicates that the terminal device has left the geometric range of the NTZ, the access layer of the terminal device sends a first request to the access network device. For example, if the first timer started by the terminal device in the connected state times out, and the terminal device enters an idle state, the access layer of the terminal device receives the first message again, indicating that the terminal device has left the geometric range of the NTZ. Then, the access layer of the terminal device sends a first request to the access network device. This first request is used to request RRC re-establishment and indicates that the reason for triggering the RRC re-establishment is that the terminal device cannot perform uplink transmission because it is located in the NTZ. For example, if the first timer started by the terminal device in the connected state times out and the terminal device does not enter the idle state, during the period when the terminal device enters the NTZ, since the terminal device cannot send uplink signals, it cannot respond to the downlink data and / or control messages sent by the access network device. The access network device may not know the reason why the terminal device does not send uplink signals, which may lead the access network device to think that the wireless link of the terminal device is faulty. When the access layer of the terminal device receives the first information again, the first information indicates that the terminal device leaves the geometric area of ​​the NTZ, the access layer of the terminal device can send a first request to the access network device. The first request is used to trigger RRC recovery, and indicates that the reason for RRC recovery is that the terminal device cannot perform uplink transmission.

[0171] Implementation method 3-11: The non-access layer of the terminal device sends the first indication information to the core network device.

[0172] In some implementations, the first instruction information is used to instruct the terminal device to leave the NTZ.

[0173] In some implementations, the first indication information can be carried in a NAS message. For example, if the terminal device determines that it has left the NTZ, the non-access stratum of the terminal device sends a NAS message to the core network device, and this NAS message carries the first indication information.

[0174] The preceding text, in conjunction with Embodiment 3, described multiple implementation methods for a terminal device to perform corresponding operations based on first information and / or when the terminal device enters or leaves the NTZ. In some scenarios, these multiple implementation methods can be used individually. In other scenarios, these multiple implementation methods can be used in combination. The following examples illustrate scenarios where multiple implementation methods of Embodiment 3 are used in combination.

[0175] In some implementations, if the terminal device is in a connected state and enters the NTZ, the non-access layer of the terminal device performs the first operation based on the scheme of implementation 3-1, and the access layer of the terminal device performs the fifth operation based on the scheme of implementation 3-5. For example, when the terminal device is in a connected state, the first operation includes instructing the application layer of the terminal device not to send service data, and the fifth operation includes not sending uplink signals if the TAT is running and has not timed out. If the terminal device enters the NTZ, the non-access layer of the terminal device instructs the application layer of the terminal device not to send new service data to the access layer of the terminal device, and the access layer of the terminal device does not send uplink data that has already arrived at the terminal if the TAT is running and has not timed out.

[0176] In some implementations, if the terminal device is in an idle or inactive state and enters the NTZ, the access layer of the terminal device performs a second operation based on the scheme of implementation 3-2. Due to the movement of the terminal device, the terminal device determines that it has left the NTZ based on the first information, and the access layer of the terminal device performs a third operation based on the scheme of implementation 3-2. For example, the second operation includes not initiating anytime access in the terminal device's registered cell, and the third operation includes canceling the second operation. When the terminal device enters the NTZ, the access layer of the terminal device in an idle or inactive state does not initiate anytime access in the terminal device's registered cell. When the terminal device leaves the NTZ, the access layer of the terminal device in an idle or inactive state can choose to initiate anytime access in the terminal device's registered cell.

[0177] In some implementations, if the terminal device is in a connected state and the first information indicates that the terminal device has entered the geometric area of ​​the NTZ, the access layer of the terminal device performs a sixth operation based on the schemes of implementations 3-6, and sends a first request to the access network device based on the schemes of implementations 3-10. For example, the sixth operation includes starting a first timer, and if the access layer of the terminal device does not receive an indication that the terminal device has left the geometric area of ​​the NTZ before the first timer expires, the sixth operation also includes the terminal device entering an idle state from the connected state. The first request is triggered based on a first condition, which includes the first information indicating that the terminal device has left the geometric area of ​​the NTZ and the first timer expires. When the first information indicates that the terminal device has entered the geometric area of ​​the NTZ, the access layer of the terminal device in the connected state starts the first timer. Since the access layer of the terminal device in the connected state did not receive an indication that the terminal device has left the geometric area of ​​the NTZ before the first timer expires, the terminal device enters an idle state from the connected state. When the access layer of the terminal device receives the first information again, the first information indicates that the terminal device leaves the geometric area of ​​the NTZ. The access layer of the terminal device in the idle state can send a first request to the access network device. The first request is used for RRC re-establishment and indicates that the reason for triggering RRC re-establishment is that the terminal device is unable to send uplinks because it is located in the NTZ.

[0178] The preceding sections, in conjunction with Embodiments 1, 2, and 3, respectively described the schemes for a terminal device to determine first information at the non-access stratum level, for the terminal device to determine whether it has entered or left the NTZ, and for the terminal device to perform corresponding operations based on the first information and / or whether it has entered or left the NTZ. In some implementations, Embodiments 1, 2, and 3 can be used individually. In other scenarios, Embodiments 1, 2, and 3 can be used in combination. The following section provides examples of a scheme combining Embodiments 1, 2, and 3.

[0179] The following examples, with reference to Figure 4, illustrate Embodiment 1, Embodiment 2, Implementation Modes 3-2 to 3-4, Implementation Mode 3-10, and a combination thereof. Figure 4 includes steps S401 to S411.

[0180] Assuming the terminal device has registered with the core network equipment, the NTZ information includes information indicating the geometric range of the NTZ and information indicating the frequency range of the NTZ. The terminal device is in an idle state, and the priority of the cell where the terminal device is camped is the cell reselection priority corresponding to the camped cell, which is configured using cellReselectionPriority with a value of 7.

[0181] In step S401, the core network device sends a NAS message to the non-access layer of the terminal device.

[0182] The NAS message sent by the core network equipment to the non-access layer of the terminal equipment carries NTZ information, and the non-access layer of the terminal equipment determines the NTZ information based on the NAS message.

[0183] In step S402, the non-access layer of the terminal device determines the first information.

[0184] The non-access layer of the terminal device determines the geometric area of ​​the NTZ that the terminal device has entered based on the NTZ information, including the information used to indicate the geometric range of the NTZ, and the positioning results of the GPS module, and determines the frequency range of the NTZ based on the NTZ information.

[0185] In step S403, the non-access layer of the terminal device provides first information to the access layer of the terminal device.

[0186] The access layer of the terminal device obtains first information, which indicates that the terminal device has entered the geometric range and frequency range of the NTZ.

[0187] In step S404, the access layer of the terminal device determines that the terminal device has entered the NTZ.

[0188] Based on the first information, the access layer of the terminal device determines that the frequency range of the NTZ matches the frequency range of the cell corresponding to the terminal device, and that the terminal device enters the geometric range of the NTZ. The access layer of the terminal device further determines that the terminal device has entered the NTZ.

[0189] In step S405, the access layer of the terminal device performs a second operation.

[0190] Since the terminal device is in an idle state and has entered the NTZ, the access layer of the terminal device performs a second operation. The second operation includes not initiating random access in the terminal device's camp cell and reducing the value of cellReselectionPriority corresponding to the terminal device's camp cell from 7 to 6.

[0191] In step S406, the non-access layer of the terminal device determines the first information.

[0192] The non-access layer of the terminal device determines the geometric area where the terminal device has left the NTZ based on the NTZ information, including information indicating the geometric range of the NTZ, and the positioning results of the GPS module.

[0193] In step S407, the non-access layer of the terminal device provides first information to the access layer of the terminal device.

[0194] The access layer of the terminal device obtains the first information, which indicates that the terminal device has left the geometric range of the NTZ.

[0195] In step S408, the access layer of the terminal device determines that the terminal device has left the NTZ.

[0196] Since the first information indicates that the terminal device has left the geometric range of the NTZ, the access layer of the terminal device determines that the terminal device has left the NTZ based on the first information.

[0197] In step S409, the access layer of the terminal device performs the third and fourth operations.

[0198] Since the terminal device is in an idle state and has left the NTZ, the terminal device's access layer performs the third and fourth operations. The third operation includes canceling the second operation, and the fourth operation includes increasing the priority of the frequency point corresponding to the NTZ. Therefore, the terminal device's access layer cancels the execution of the second operation in step S405 and increases the value of cellReselectionPriority corresponding to the cell where the terminal device is currently camped from 6 to 7. At this time, the terminal device can choose to initiate random access in the currently camped cell.

[0199] In step S410, the access layer of the terminal device sends a first request to the access network device.

[0200] The first condition includes the first information indicating that the terminal device leaves the geometric range of the NTZ. Since the first information in step S407 indicates that the terminal device leaves the geometric area of ​​the NTZ, the first condition is met. Therefore, the access layer of the terminal device is triggered to send a first request to the access network device. The first request is used to request RRC re-establishment and indicates that the reason for triggering RRC re-establishment is that the terminal device cannot perform uplink transmission because it is located in the NTZ.

[0201] In step S411, the non-access layer of the terminal device sends first indication information to the core network device.

[0202] The non-access layer of the terminal device sends a NAS message to the core network device. The NAS message carries first indication information, which instructs the terminal device to leave the NTZ.

[0203] The following examples, with reference to Figure 5, illustrate Embodiment 1, Embodiment 2, and a combination of implementation methods 3-9. Figure 5 includes steps S510 to S570.

[0204] Assuming the terminal device has not registered with the core network equipment, the NTZ information includes information indicating the geometric range of the NTZ and information indicating the frequency range of the NTZ.

[0205] In step S510, the core network device provides NTZ information to the access network device.

[0206] Access network devices obtain NTZ information.

[0207] In step S520, the access network device sends an SIB message to the access layer of the terminal device.

[0208] The SIB message sent by the access network device carries NTZ information, and the access layer of the terminal device obtains the NTZ information from the SIB message.

[0209] In step S530, the access layer of the terminal device provides NTZ information to the non-access layer of the terminal device.

[0210] The access layer of the terminal device submits NTZ information to the non-access layer of the terminal device, and the non-access layer of the terminal device obtains the NTZ information.

[0211] In step S540, the non-access layer of the terminal device determines the first information.

[0212] The non-access layer of the terminal device determines whether the current terminal device has entered or left the geometric area of ​​the NTZ based on the NTZ information, including information indicating the geometric range of the NTZ, and the positioning results of the GPS module.

[0213] In step S550, the non-access layer of the terminal device provides first information to the access layer of the terminal device.

[0214] The access layer of the terminal device obtains first information, which indicates one or more of the following: the terminal device enters the geometric range of the NTZ, the terminal device leaves the geometric area of ​​the NTZ, and the frequency range of the NTZ.

[0215] In step S560, the access layer of the terminal device determines whether the terminal device enters or leaves the NTZ.

[0216] Based on the first information, if the access layer of the terminal device determines that the frequency range of the NTZ matches the frequency range of the cell corresponding to the terminal device, and the first information indicates that the terminal device enters the geometric range of the NTZ, the access layer of the terminal device further determines that the terminal device has entered the NTZ; if the first information indicates that the terminal device leaves the geometric range of the NTZ, the access layer of the terminal device determines that the terminal device has left the NTZ.

[0217] In step S570, the access layer of the terminal device determines whether to initiate random access.

[0218] If the access layer of the terminal device determines in step S560 that the terminal device has entered the NTZ, the access layer of the terminal device will not initiate random access in the terminal device's camping cell; if the access layer of the terminal device determines in step S560 that the terminal device has left the NTZ, the access layer of the terminal device will initiate random access in the terminal device's camping cell.

[0219] The method embodiments of this application have been described in detail above with reference to Figures 1 to 5. The apparatus embodiments of this application will be described in detail below with reference to Figures 6 to 8. It should be understood that the descriptions of the method embodiments correspond to the descriptions of the apparatus embodiments; therefore, any parts not described in detail can be referred to the preceding method embodiments.

[0220] Figure 6 is a schematic diagram of a terminal device according to an embodiment of this application. The terminal device 600 shown in Figure 6 includes: an acquisition unit 610.

[0221] The acquisition unit 610 is used for the terminal device to acquire first information associated with the non-intrusive zone (NTZ), the first information being used to indicate one or more of the following: the terminal device entering the geometric range of the NTZ; the terminal device leaving the geometric range of the NTZ; the frequency range of the NTZ.

[0222] In some implementations, the first information is provided by the non-access layer of the terminal device to the access layer of the terminal device.

[0223] In some implementations, the first information indicates the frequency range of the NTZ by carrying the frequency point information of the NTZ.

[0224] In some implementations, the first information is used to determine whether the terminal device enters or leaves the NTZ.

[0225] In some implementations, if the terminal device enters the NTZ, the first information indicates that the terminal device has entered the geometric range of the NTZ, and the frequency range of the NTZ matches the frequency range of the cell corresponding to the terminal device; and / or if the terminal device leaves the NTZ, the first information indicates that the terminal device has left the geometric range of the NTZ.

[0226] In some implementations, the first information is used to indicate the frequency range of the NTZ, and whether the frequency range of the NTZ matches the frequency range of the cell corresponding to the terminal device is determined by the access layer of the terminal device based on the first information.

[0227] In some implementations, if the terminal device enters the NTZ, the terminal device further includes: an execution unit for the non-access stratum of the terminal device to perform a first operation, the first operation including one or more of the following: not initiating an emergency call; not generating a non-access stratum NAS message; not providing a NAS message to the access stratum of the terminal device; instructing the application layer of the terminal device not to send service data.

[0228] In some implementations, if the terminal device is in an idle or inactive state and enters the NTZ, the terminal device further includes: an execution unit for the access layer of the terminal device to perform a second operation, the second operation including one or more of the following: not initiating random access in the terminal device's stationary cell; reducing the priority of the terminal device's stationary cell; accessing a first cell, the first cell being different from the terminal device's stationary cell.

[0229] In some implementations, if the terminal device leaves the NTZ, the terminal device further includes: an execution unit for the access layer of the terminal device to perform a third operation, the third operation including one or more of the following: canceling the second operation; initiating random access in the stationed cell.

[0230] In some implementations, if the terminal device is in an idle state and leaves the NTZ, the terminal device further includes an execution unit for the access layer of the terminal device to perform a fourth operation, the fourth operation including increasing the priority of the frequency point corresponding to the NTZ.

[0231] In some implementations, if the terminal device is in a connected state and enters the NTZ, the terminal device further includes: an execution unit for the access layer of the terminal device to perform a fifth operation, the fifth operation including one or more of the following: not sending an uplink signal when the timing advance timer (TAT) is running and has not timed out; considering the TAT to have timed out; not initiating random access in the serving cell of the terminal device.

[0232] In some implementations, if the terminal device is in a connected state and the first information indicates that the terminal device has entered the geometric region of the NTZ, the terminal device further includes: an execution unit for the access layer of the terminal device to perform a sixth operation, the sixth operation including starting a first timer.

[0233] In some implementations, if the access layer of the terminal device does not receive a downlink signal before the first timer expires, the sixth operation further includes the terminal device entering an idle state from the connected state.

[0234] In some implementations, if the terminal device is in a connected state and leaves the NTZ, the terminal device further includes: an execution unit for the access layer of the terminal device to perform a seventh operation, the seventh operation including initiating random access in response to uplink data to be sent.

[0235] In some implementations, if the first information indicates that the terminal device enters the geometric range of the NTZ, the terminal device further includes: a determining unit, configured to determine, before the access layer of the terminal device performs conditional handover, whether to initiate random access in a target cell based on the frequency range of the NTZ indicated by the first information; wherein the target cell is a cell that satisfies the handover conditions in the conditional handover.

[0236] In some implementations, the terminal device further includes: a providing unit, for the non-access layer of the terminal device to provide the updated first information to the access layer of the terminal device, the updated first information indicating that the terminal device leaves the geometric range of the NTZ; and an execution unit, for the access layer of the terminal device to perform the conditional handover to access or not access the target cell.

[0237] In some implementations, the terminal device does not register with the core network device, and the terminal device further includes: an initiating unit, which, if the terminal device enters the NTZ, is used to prevent the access layer of the terminal device from initiating random access in the terminal device's registered cell; if the terminal device leaves the NTZ, the initiating unit is also used to prevent the access layer of the terminal device from initiating random access in the terminal device's registered cell.

[0238] In some implementations, if the access layer of the terminal device does not initiate anytime access in the cell where the terminal device is camped, the terminal device further includes: an access unit, used for the access layer of the terminal device to access a second cell, the frequency range of the second cell not matching the frequency range of the NTZ.

[0239] In some implementations, the terminal device further includes: a transmitting unit, configured to send a first request from the access layer of the terminal device to the access network device for requesting Radio Resource Control (RRC) recovery or RRC re-establishment, wherein the first request indicates that the reason for triggering the RRC recovery or RRC re-establishment is one or more of the following: the terminal device is unable to perform uplink transmission; the terminal device is unable to perform uplink transmission because it is located in the NTZ.

[0240] In some implementations, the first request is triggered based on a first condition, which includes one or more of the following: the first information indicates that the terminal device leaves the geometric range of the NTZ; a first timer times out, the first timer being started when the terminal device obtains the first information indicating that the terminal device enters the geometric range of the NTZ.

[0241] In some implementations, the terminal device further includes a sending unit, used by the non-access layer of the terminal device to send first indication information to the core network device, the first indication information being used to instruct the terminal device to leave the NTZ.

[0242] In some implementations, the first information is determined by the non-access layer of the terminal device based on the NTZ information of the NTZ.

[0243] In some implementations, the NTZ information is determined based on one or more of the following: NAS messages sent by the core network device; system messages sent by the core network device through the access network device; and pre-configuration information of the terminal device.

[0244] In some implementations, the NTZ information is indicated by the core network device to the non-access stratum of the terminal device in one or more of the following processes: a registration process initiated by the terminal device; a service request process initiated by the terminal device; or a timing advance time (TA) update process initiated by the terminal device.

[0245] In some implementations, the NTZ information is used to indicate one or more NTZs, wherein the NTZ indicated by the NTZ information is located within the Tracking Area (TA) where the terminal device is located, and / or the NTZ indicated by the NTZ information is located within one or more TAs adjacent to the TA where the terminal device is located.

[0246] In some implementations, the NTZ information includes information indicating the geometric range of the NTZ and / or information indicating the frequency range of the NTZ.

[0247] In some implementations, the information used to indicate the geometric extent of the NTZ includes one or more of the following: the coordinates of the center point of the NTZ; the radius of the NTZ; and the height of the NTZ.

[0248] Figure 7 is a schematic diagram of a network device according to an embodiment of this application. The terminal device 700 shown in Figure 7 includes a receiving unit 710.

[0249] The receiving unit 710 is configured to receive a first request sent by the access layer of the terminal device for requesting Radio Resource Control (RRC) recovery or RRC re-establishment. The first request indicates that the reason for triggering the RRC recovery or RRC re-establishment is one or more of the following: the terminal device is unable to perform uplink transmission; the terminal device is unable to perform uplink transmission because it is located in the Non-Intrusive Zone (NTZ).

[0250] In some implementations, the first request is triggered based on a first condition, which includes one or more of the following: first information indicating that the terminal device leaves the geometric range of the NTZ, the first information being provided by the non-access layer of the terminal device to the access layer of the terminal device; and a first timer timeout, the first timer being started when the terminal device receives the first information indicating that the terminal device enters the geometric range of the NTZ.

[0251] In some implementations, the first information is used to indicate one or more of the following: the terminal device enters the geometric range of the NTZ; the terminal device leaves the geometric range of the NTZ; the frequency range of the NTZ.

[0252] In some implementations, the first information indicates the frequency range of the NTZ by carrying the frequency point information of the NTZ.

[0253] In some implementations, the first information is used to determine whether the terminal device enters or leaves the NTZ.

[0254] In some implementations, the network device further includes: the receiving unit 710 is further configured to receive first indication information sent by the non-access stratum of the terminal device, the first indication information being used to instruct the terminal device to leave the NTZ.

[0255] In some implementations, the first information is determined by the non-access layer of the terminal device based on the NTZ information of the NTZ.

[0256] In some implementations, the NTZ information is determined based on one or more of the following: non-access stratum (NAS) messages sent by the core network device; system messages sent by the core network device through the access network device; and pre-configuration information of the terminal device.

[0257] In some implementations, the NTZ information is indicated by the core network device to the non-access stratum of the terminal device in one or more of the following processes: a registration process initiated by the terminal device; a service request process initiated by the terminal device; or a timing advance time (TA) update process initiated by the terminal device.

[0258] In some implementations, the NTZ information is used to indicate one or more NTZs, wherein the NTZ indicated by the NTZ information is located within the Tracking Area (TA) where the terminal device is located, and / or the NTZ indicated by the NTZ information is located within one or more TAs adjacent to the TA where the terminal device is located.

[0259] In some implementations, the NTZ information includes information indicating the geometric range of the NTZ and / or information indicating the frequency range of the NTZ.

[0260] In some implementations, the information used to indicate the geometric extent of the NTZ includes one or more of the following: the coordinates of the center point of the NTZ; the radius of the NTZ; and the height of the NTZ.

[0261] In an optional embodiment, the acquisition unit 610 may be a transceiver 830. The terminal device 600 may also include a processor 810 and a memory 820, as shown in FIG8.

[0262] In an optional embodiment, the receiving unit 710 may be a transceiver 830. The terminal device 700 may also include a processor 810 and a memory 820, as shown in FIG8.

[0263] Figure 8 is a schematic structural diagram of a communication device according to an embodiment of this application. The dashed lines in Figure 8 indicate that the unit or module is optional. This device 800 can be used to implement the methods described in the above method embodiments. Device 800 can be a chip, a terminal device, or a network device.

[0264] The apparatus 800 may include one or more processors 810. The processor 810 may support the apparatus 800 in implementing the methods described in the preceding method embodiments. The processor 810 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0265] The apparatus 800 may further include one or more memories 820. The memories 820 store a program that can be executed by the processor 810, causing the processor 810 to perform the methods described in the preceding method embodiments. The memories 820 may be independent of the processor 810 or integrated within the processor 810.

[0266] The device 800 may also include a transceiver 830. The processor 810 can communicate with other devices or chips via the transceiver 830. For example, the processor 810 can send and receive data with other devices or chips via the transceiver 830.

[0267] This application also provides a computer-readable storage medium for storing a program. This computer-readable storage medium can be applied to a terminal or network device provided in this application, and the program causes a computer to execute the methods performed by the terminal or network device in various embodiments of this application.

[0268] This application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to a terminal or network device provided in this application embodiment, and the program causes a computer to execute the methods performed by the terminal or network device in various embodiments of this application.

[0269] This application also provides a computer program. This computer program can be applied to the terminal or network device provided in this application, and the computer program causes the computer to execute the methods performed by the terminal or network device in various embodiments of this application.

[0270] It should be understood that the terms "system" and "network" in this application can be used interchangeably. Furthermore, the terminology used in this application is only for explaining specific embodiments of the application and is not intended to limit the application. The terms "first," "second," "third," and "fourth," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. In addition, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0271] In the embodiments of this application, the term "instruction" can be a direct instruction, an indirect instruction, or an indication of a relationship. For example, A instructing B can mean that A directly instructs B, such as B being able to obtain information through A; it can also mean that A indirectly instructs B, such as A instructing C, so B can obtain information through C; or it can mean that there is a relationship between A and B.

[0272] In the embodiments of this application, the term "correspondence" can indicate a direct or indirect correspondence between two things, or an association between two things, or a relationship such as instruction and being instructed, configuration and being configured.

[0273] In this application embodiment, "predefined" or "preconfigured" can be implemented by pre-storing corresponding codes, tables, or other means that can be used to indicate relevant information in the device (e.g., including terminal devices and network devices). This application does not limit the specific implementation method. For example, predefined can refer to what is defined in the protocol.

[0274] In this application embodiment, the "protocol" may refer to a standard protocol in the field of communication, such as the LTE protocol, the NR protocol, and related protocols applied to future communication systems. This application does not limit this.

[0275] In the embodiments of this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0276] In the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0277] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0278] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0279] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0280] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can read or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., digital video discs, DVDs) or semiconductor media (e.g., solid-state disks, SSDs), etc.

[0281] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method of wireless communication, comprising: Comprising: A terminal device acquires first information associated with a non-intrusion zone (NTZ), the first information being used to indicate one or more of: The terminal device enters a geometric range of the NTZ; The terminal device leaves the geometric range of the NTZ; A frequency range of the NTZ.

2. The method of claim 1, wherein, The first information is provided by a non-access stratum of the terminal device to an access stratum of the terminal device.

3. The method of claim 1 or 2, wherein, The first information indicates the frequency range of the NTZ by carrying frequency point information of the NTZ.

4. The method of any one of claims 1-3, wherein, The first information is used to determine that the terminal device enters or leaves the NTZ.

5. The method of any one of claims 1-4, wherein, If the terminal device enters the NTZ, the first information indicates that the terminal device enters the geometric range of the NTZ, and the frequency range of the NTZ matches the frequency range of a cell corresponding to the terminal device; and / or If the terminal device leaves the NTZ, the first information indicates that the terminal device leaves the geometric range of the NTZ.

6. The method of claim 5, wherein, The first information is used to indicate the frequency range of the NTZ, whether the frequency range of the NTZ matches the frequency range of a cell corresponding to the terminal device is determined by the access stratum of the terminal device based on the first information.

7. The method of any one of claims 1-6, wherein, If the terminal device enters the NTZ, the method further comprises: The non-access stratum of the terminal device performs a first operation, the first operation comprising one or more of: Not initiating an emergency call; Not generating a non-access stratum (NAS) message; Not providing the NAS message to the access stratum of the terminal device; Indicating that an application layer of the terminal device does not send service data.

8. The method of any one of claims 1-7, wherein, If the terminal device is in an idle or inactive state and the terminal device enters the NTZ, the method further comprises: The access stratum of the terminal device performs a second operation, the second operation comprising one or more of: Not initiating random access in a camped cell of the terminal device; Lowering a priority of the camped cell of the terminal device; Accessing a first cell different from the camped cell of the terminal device.

9. The method of claim 8, wherein, If the terminal device leaves the NTZ, the method further comprises: The access stratum of the terminal device performs a third operation, the third operation comprising one or more of: Canceling the second operation; Initiating random access in the camped cell.

10. The method of any one of claims 1-9, wherein, If the terminal device is in an idle state and the terminal device leaves the NTZ, the method further comprises: The access stratum of the terminal device performs a fourth operation, the fourth operation comprising increasing a priority of a frequency point corresponding to the NTZ.

11. The method of any one of claims 1-10, wherein, If the terminal device is in a connected state and the terminal device enters the NTZ, the method further comprises: The access stratum of the terminal device performs a fifth operation, the fifth operation comprising one or more of: Not sending an uplink signal if a timing advance timer (TAT) is running and has not timed out; Considering that the TAT has timed out; Not initiating random access in a serving cell of the terminal device.

12. The method of any one of claims 1-11, wherein, If the terminal device is in a connected state and the first information indicates that the terminal device enters a geometric area of the NTZ, the method further comprises: The access layer of the terminal device performs a sixth operation, which includes starting a first timer.

13. The method of claim 12, wherein, If the access layer of the terminal device does not receive an indication that the terminal device leaves the geometric region of the NTZ before the first timer expires, the sixth operation further includes the terminal device entering an idle state from the connected state.

14. The method of claims 1-13, wherein, If the terminal device is in the connected state and the terminal device leaves the NTZ, the method further includes: The access layer of the terminal device performs a seventh operation, which includes initiating random access in response to uplink data to be transmitted.

15. The method of any one of claims 1-3, wherein, If the first information indicates that the terminal device enters the geometric range of the NTZ, the method further includes: Before the access layer of the terminal device performs conditional handover, the access layer of the terminal device determines whether to initiate random access in a target cell based on the frequency range of the NTZ indicated by the first information. The target cell is a cell that meets the handover condition in the conditional handover.

16. The method of claim 15, wherein, The method further includes: The non-access layer of the terminal device provides the access layer of the terminal device with updated first information indicating that the terminal device leaves the geometric range of the NTZ, and the access layer of the terminal device performs the conditional handover access or does not access the target cell.

17. The method of any one of claims 1-16, wherein, The terminal device is not registered with the core network device, and the method further includes: If the terminal device enters the NTZ, the access layer of the terminal device does not initiate random access in the camped cell of the terminal device; If the terminal device leaves the NTZ, the access layer of the terminal device initiates random access in the camped cell of the terminal device.

18. The method of claim 17, wherein, If the access layer of the terminal device does not initiate random access in the cell in which the terminal device camps, the method further includes: The access layer of the terminal device accesses a second cell, and the frequency range of the second cell does not match the frequency range of the NTZ.

19. The method of any one of claims 1-18, wherein, The method further includes: The access layer of the terminal device sends a first request for radio resource control (RRC) recovery or RRC re-establishment to an access network device, and the first request is used to indicate that the cause of triggering the RRC recovery or RRC re-establishment is one or more of the following: The terminal device cannot perform uplink transmission; The terminal device cannot perform uplink transmission due to being located in the NTZ.

20. The method of claim 19, wherein, The first request is triggered based on a first condition, and the first condition includes one or more of the following: The first information indicates that the terminal device leaves the geometric range of the NTZ; A first timer expires, and the first timer is started when the terminal device acquires first information indicating that the terminal device enters the geometric range of the NTZ.

21. The method of any one of claims 1-20, wherein, The method further includes: The non-access layer of the terminal device sends first indication information to a core network device, and the first indication information is used to indicate that the terminal device leaves the NTZ.

22. The method of any one of claims 1-21, wherein, The first information is determined by the non-access layer of the terminal device based on NTZ information of the NTZ.

23. The method of claim 22, wherein, The NTZ information is determined based on one or more of the following information: The NAS message sent by the core network device; The system message sent by the core network device through the access network device; The pre-configuration information of the terminal device.

24. The method of claim 22 or 23, wherein, The NTZ information is indicated by the core network device to the non-access layer of the terminal device in one or more of the following procedures: The registration procedure initiated by the terminal device; The service request procedure initiated by the terminal device; The timing advance (TA) update procedure initiated by the terminal device.

25. The method of any one of claims 22-24, wherein, The NTZ information is used to indicate one or more NTZs, the NTZs indicated by the NTZ information are located in a tracking area (TA) where the terminal device is located, and / or The NTZs indicated by the NTZ information are located in one or more TAs adjacent to the TA where the terminal device is located.

26. The method of any one of claims 22-25, wherein, The NTZ information includes information used to indicate the geometric range of the NTZ and / or information used to indicate the frequency range of the NTZ.

27. The method of any one of claims 1-26, wherein, The information used to indicate the geometric range of the NTZ includes one or more of the following: The coordinates of the center point of the NTZ; The radius of the NTZ; The height of the NTZ.

28. A method of wireless communication, comprising: The first request sent by the access network device to the access layer of the terminal device for requesting radio resource control (RRC) resume or RRC re-establishment, the first request being used to indicate that the cause of triggering the RRC resume or RRC re-establishment is one or more of the following: The terminal device cannot perform uplink transmission; The terminal device cannot perform uplink transmission due to being located in a non-intrusion zone (NTZ). The first request is triggered based on a first condition, the first condition including one or more of the following:

29. The method of claim 28, wherein, First information indicating that the terminal device leaves the geometric range of the NTZ, the first information being provided by the non-access layer of the terminal device to the access layer of the terminal device; A first timer expires, the first timer being started when the terminal device acquires first information indicating that the terminal device enters the geometric range of the NTZ. The first information is used to indicate one or more of the following:

30. The method of claim 29, wherein, The terminal device enters the geometric range of the NTZ; The terminal device leaves the geometric range of the NTZ; The frequency range of the NTZ. The first information indicates the frequency range of the NTZ by carrying the frequency point information of the NTZ.

31. The method of claim 30, wherein, The first information is used to determine whether the terminal device enters or leaves the NTZ.

32. The method of claim 30 or 31, wherein, The method further includes:

33. The method of any one of claims 28-32, wherein, The core network device receives first indication information sent by the non-access layer of the terminal device, the first indication information being used to indicate that the terminal device leaves the NTZ. The first information is determined by the non-access layer of the terminal device based on NTZ information of the NTZ.

34. The method of any one of claims 29-32, wherein, The NTZ information is determined based on one or more of the following information:

35. The method of claim 34, wherein, The non-access layer (NAS) message sent by the core network device; The system message sent by the core network device through the access network device; The pre-configuration information of the terminal device. The NTZ information is indicated by the core network device to the non-access layer of the terminal device in one or more of the following procedures:

36. The method of claim 34 or 35, wherein, The registration procedure initiated by the terminal device; The service request procedure initiated by the terminal device; ​ The terminal device initiates a timing advance (TA) update procedure.

37. The method of any one of claims 34-36, wherein, The NTZ information is used to indicate one or more NTZs, the NTZs indicated by the NTZ information are located in a tracking area (TA) where the terminal device is located, and / or The NTZs indicated by the NTZ information are located in one or more TAs adjacent to the TA where the terminal device is located.

38. The method of any one of claims 34-37, wherein, The NTZ information includes information used to indicate a geometric range of the NTZ, and / or information used to indicate a frequency range of the NTZ.

39. The method of any one of claims 29-38, wherein, The information used to indicate the geometric range of the NTZ includes one or more of the following: Coordinates of a center point of the NTZ; A radius of the NTZ; A height of the NTZ.

40. A terminal device, comprising: The information used to indicate the frequency range of the NTZ includes one or more of the following: A frequency point of the NTZ; A frequency range of the NTZ. The terminal device acquires first information associated with a non-intrusion zone (NTZ), the first information being used to indicate one or more of the following: Entry of the terminal device into a geometric range of the NTZ; 41. The terminal device of claim 40, wherein, Exit of the terminal device from the geometric range of the NTZ; 42. The terminal device according to claim 40 or 41, characterized by A frequency range of the NTZ.

43. The terminal device of any one of claims 40-42, wherein, The first information is provided by a non-access stratum (NAS) layer of the terminal device to an access stratum (AS) layer of the terminal device.

44. The terminal device of any one of claims 40-43, wherein, The first information indicates the frequency range of the NTZ by carrying frequency point information of the NTZ. The first information is used to determine entry or exit of the terminal device into or from the NTZ.

45. The terminal device of claim 44, wherein, If the terminal device enters the NTZ, the first information indicates that the terminal device enters the geometric range of the NTZ, and the frequency range of the NTZ matches a frequency range of a cell corresponding to the terminal device; and / or 46. The terminal device of any one of claims 40-45, wherein, If the terminal device exits the NTZ, the first information indicates that the terminal device exits the geometric range of the NTZ. The first information is used to indicate the frequency range of the NTZ, whether the frequency range of the NTZ matches the frequency range of the cell corresponding to the terminal device being determined by the AS layer of the terminal device based on the first information. If the terminal device enters the NTZ, the terminal device further includes: An execution unit configured to perform a first operation by the NAS layer of the terminal device, the first operation including one or more of the following: Not initiating an emergency call; Not generating a NAS message; 47. The terminal device of any one of claims 40-46, wherein, Not providing the NAS message to the AS layer of the terminal device; Indicating that an application layer of the terminal device does not send service data. If the terminal device is in an idle or inactive state and enters the NTZ, the terminal device further includes: An execution unit configured to perform a second operation by the AS layer of the terminal device, the second operation including one or more of the following: Not initiating random access in a camped cell of the terminal device; 48. The terminal device of claim 47, wherein, Lowering a priority of the camped cell of the terminal device; Accessing a first cell different from the camped cell of the terminal device. If the terminal device exits the NTZ, the terminal device further includes: An execution unit configured to perform a third operation by the AS layer of the terminal device, the third operation including one or more of the following: Canceling the second operation; Initiating random access in the camped cell.

49. The terminal device of any one of claims 40-48, wherein, If the terminal device is in an idle state and the terminal device leaves the NTZ, the terminal device further comprises: an execution unit, configured to perform, by an access layer of the terminal device, a fourth operation, the fourth operation comprising increasing a priority of a frequency point corresponding to the NTZ.

50. The terminal device of any one of claims 40-49, wherein, If the terminal device is in a connected state and the terminal device enters the NTZ, the terminal device further comprises: an execution unit, configured to perform, by an access layer of the terminal device, a fifth operation, the fifth operation comprising one or more of the following: not sending an uplink signal in a case where a timing advance timer (TAT) is running and has not timed out; considering that the TAT has timed out; not initiating random access in a serving cell of the terminal device.

51. The terminal device of any one of claims 40-50, wherein, If the terminal device is in a connected state and the first information indicates that the terminal device enters a geometric region of the NTZ, the terminal device further comprises: an execution unit, configured to perform, by an access layer of the terminal device, a sixth operation, the sixth operation comprising starting a first timer.

52. The terminal device according to claim 51, wherein, If the access layer of the terminal device does not receive a downlink signal before the first timer times out, the sixth operation further comprises that the terminal device enters an idle state from the connected state.

53. The terminal device according to claims 40-52, characterized by If the terminal device is in a connected state and the terminal device leaves the NTZ, the terminal device further comprises: an execution unit, configured to perform, by an access layer of the terminal device, a seventh operation, the seventh operation comprising initiating random access in response to uplink data to be sent.

54. The terminal device of any one of claims 40-42, wherein, If the first information indicates that the terminal device enters a geometric range of the NTZ, the terminal device further comprises: a determination unit, configured to, before an access layer of the terminal device performs conditional handover, determine, by the access layer of the terminal device, whether to initiate random access in a target cell based on a frequency range of the NTZ indicated by the first information; wherein the target cell is a cell that meets a handover condition in the conditional handover.

55. The terminal device according to claim 54, characterized by The terminal device further comprises: a providing unit, configured to provide, by a non-access layer of the terminal device, updated first information to the access layer of the terminal device, the updated first information indicating that the terminal device leaves the geometric range of the NTZ, and an execution unit, configured to perform, by the access layer of the terminal device, the conditional handover access or not access to the target cell.

56. The terminal device of any one of claims 40-55, wherein, The terminal device is not registered with a core network device, and the terminal device further comprises: an initiation unit, configured to, if the terminal device enters the NTZ, not initiate, by an access layer of the terminal device, random access in a camped cell of the terminal device; if the terminal device leaves the NTZ, the initiation unit is further configured to initiate, by the access layer of the terminal device, random access in the camped cell of the terminal device.

57. The terminal device of claim 56, wherein, If the access layer of the terminal device does not initiate random access in the cell in which the terminal device camps, the terminal device further comprises: an access unit, configured to access, by the access layer of the terminal device, a second cell, a frequency range of the second cell not matching a frequency range of the NTZ.

58. The terminal device of any one of claims 40-57, wherein, The terminal device further comprises: The sending unit is configured to send, by an access layer of the terminal device, a first request for requesting radio resource control (RRC) resumption or RRC re-establishment to an access network device, and the first request is used to indicate that a cause for triggering the RRC resumption or RRC re-establishment is one or more of the following: The terminal device is unable to perform uplink transmission; The terminal device is unable to perform uplink transmission due to being located in the NTZ.

59. The terminal device of claim 58, wherein, The first request is triggered based on a first condition, and the first condition includes one or more of the following: The first information indicates that the terminal device leaves a geometric range of the NTZ; A first timer is expired, and the first timer is started when the terminal device acquires first information used to indicate that the terminal device enters the geometric range of the NTZ.

60. The terminal device of any one of claims 40-59, wherein, The terminal device further includes: The sending unit is configured to send, by a non-access layer of the terminal device, first indication information to a core network device, and the first indication information is used to indicate that the terminal device leaves the NTZ.

61. The terminal device of any one of claims 40-60, wherein, The first information is determined by the non-access layer of the terminal device based on NTZ information of the NTZ.

62. The terminal device of claim 61, wherein, The NTZ information is determined based on one or more of the following information: A NAS message sent by the core network device; A system message sent by the access network device; Preconfigured information of the terminal device.

63. The terminal device according to claim 60 or 62, characterized by The NTZ information is indicated by the core network device to the non-access layer of the terminal device in one or more of the following procedures: A registration procedure initiated by the terminal device; A service request procedure initiated by the terminal device; A timing advance (TA) update procedure initiated by the terminal device.

64. The terminal device of any one of claims 61-63, wherein, The NTZ information is used to indicate one or more NTZs, the NTZs indicated by the NTZ information are located in a tracking area (TA) in which the terminal device is located, and / or The NTZs indicated by the NTZ information are located in one or more TAs adjacent to the TA in which the terminal device is located.

65. The terminal device of any one of claims 61-63, wherein, The NTZ information includes information used to indicate a geometric range of the NTZ and / or information used to indicate a frequency range of the NTZ.

66. The terminal device of any one of claims 40-65, wherein, The information used to indicate the geometric range of the NTZ includes one or more of the following: Coordinates of a center point of the NTZ; A radius of the NTZ; A height of the NTZ.

67. A network device, comprising: The terminal device includes: The receiving unit is configured to receive, by an access network device, a first request for requesting radio resource control (RRC) resumption or RRC re-establishment sent by an access layer of a terminal device, and the first request is used to indicate that a cause for triggering the RRC resumption or RRC re-establishment is one or more of the following: The terminal device is unable to perform uplink transmission; The terminal device is unable to perform uplink transmission due to being located in a non-intrusive zone (NTZ).

68. The network device of claim 67, wherein, The first request is triggered based on a first condition, and the first condition includes one or more of the following: First information indicates that the terminal device leaves a geometric range of the NTZ, and the first information is provided by a non-access layer of the terminal device to an access layer of the terminal device; A first timer is expired, and the first timer is started when the terminal device acquires first information used to indicate that the terminal device enters the geometric range of the NTZ.

69. The network device of claim 68, wherein, The first information is used to indicate one or more of the following: The terminal device enters the geometric range of the NTZ; The terminal device leaves the geometric range of the NTZ; The frequency range of the NTZ.

70. The network device of claim 69, wherein, The first information indicates the frequency range of the NTZ by carrying frequency point information of the NTZ.

71. The network device of claim 69 or 70, wherein, The first information is used to determine that the terminal device enters or leaves the NTZ.

72. The network device of any of claims 67-71, wherein, The network device further comprises: The receiving unit is further used for the core network device to receive first indication information sent by the terminal device in a non-access stratum, the first indication information being used to indicate that the terminal device leaves the NTZ.

73. The network device of any of claims 68-71, wherein, The first information is determined by a non-access stratum of the terminal device based on NTZ information of the NTZ.

74. The network device of claim 73, wherein, The NTZ information is determined based on one or more of the following information: A non-access stratum NAS message sent by the core network device; A system message sent by the core network device through an access network device; Preconfigured information of the terminal device.

75. The network device of claim 73 or 74, wherein, The NTZ information is indicated by the core network device to the non-access stratum of the terminal device in one or more of the following procedures: A registration procedure initiated by the terminal device; A service request procedure initiated by the terminal device; A timing advance TA update procedure initiated by the terminal device.

76. The network device of any of claims 73-75, wherein, The NTZ information is used to indicate one or more NTZs, the NTZs indicated by the NTZ information are located in a tracking area TA in which the terminal device is located, and / or The NTZs indicated by the NTZ information are located in one or more TAs adjacent to the TA in which the terminal device is located.

77. The network device of any of claims 73-76, wherein, The NTZ information comprises information used to indicate the geometric range of the NTZ and / or information used to indicate the frequency range of the NTZ.

78. The network device of any of claims 68-77, wherein, The information used to indicate the geometric range of the NTZ comprises one or more of the following: Coordinates of a center point of the NTZ; A radius of the NTZ; A height of the NTZ.

79. A terminal device, comprising: A terminal comprising a transceiver, a memory and a processor, the memory being used to store a program, the processor being used to invoke the program in the memory and control the transceiver to receive or send a signal, so that the terminal executes the method in any one of claims 1-27.

80. A network device, comprising: A network device comprising a transceiver, a memory and a processor, the memory being used to store a program, the processor being used to invoke the program in the memory and control the transceiver to receive or send a signal, so that the network device executes the method in any one of claims 28-39.

81. An apparatus, comprising: An apparatus comprising a processor configured to invoke a program from a memory, so that the apparatus executes the method in any one of claims 1-39.

82. A chip, comprising: A chip comprising a processor configured to invoke a program from a memory, so that a device installed with the chip executes the method in any one of claims 1-39.

83. A computer-readable storage medium, characterized in that, A computer program product having a program stored thereon, the program causing a computer to execute the method in any one of claims 1-39.

84. A computer program product, characterised in that, A computer program product having a program stored thereon, the program causing a computer to execute the method in any one of claims 1-39.

85. A computer program characterised in that, A computer program product having a program stored thereon, the program causing a computer to execute the method in any one of claims 1-39.

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