Wireless communication method, terminal equipment and network equipment

Abstract

The invention provides a wireless communication method, terminal equipment and network equipment. The method comprises: a terminal device obtaining first information associated with a non-intrusive area (NTZ), the first information being used for indicating one or more of the following: the terminal device entering a geometric range of the NTZ; the terminal equipment leaves the geometric range of the NTZ; and the frequency range of the NTZ. In the embodiment of the invention, the terminal equipment acquires the first information associated with the NTZ, and based on the first information, the terminal equipment is helped to determine whether to enter or leave the NTZ, so that the NTZ function is realized.

Description

Technical Field

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

[0002] In some scenarios, uplink signals sent by end devices (e.g., unmanned aerial vehicles (UAVs)) may interfere with other devices. Introducing a non-transmission zone (NTZ) can help address this issue. However, end devices may not be able to detect whether they have entered the NTZ, which can render the NTZ feature inoperable. Summary of the Invention

[0003] The present application provides a wireless communication method, terminal device, and network device. The following introduces various aspects of the present application.

[0004] In a first aspect, a method for wireless communication is provided, including: a terminal device obtains first information associated with a non-intrusive zone NTZ, the first information being used to indicate one or more of the following: the terminal device entering a geometric range of the NTZ; the terminal device leaving a geometric range of the NTZ; and a frequency range of the NTZ.

[0005] In a second aspect, a method for wireless communication is provided, including: an access network device receives a first request sent by an 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-invasive zone NTZ.

[0006] According to a third aspect, a terminal device is provided, comprising: an acquisition unit, configured for the terminal device to acquire first information associated with a non-intrusive zone (NTZ), wherein the first information is used to indicate one or more of the following: the terminal device entering a geometric range of the NTZ; the terminal device leaving a geometric range of the NTZ; or the frequency range of the NTZ.

[0007] In a fourth aspect, a network device is provided, comprising: a receiving unit, configured to receive a first request sent by an access layer of a terminal device to request 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-invasive zone NTZ.

[0008] In a fifth aspect, a terminal device is provided, comprising 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 call the computer program in the memory so that the terminal device executes part or all of the steps in the method of the first aspect.

[0009] In a sixth aspect, a network device is provided, comprising 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 call the computer program in the memory so that the network device executes part or all of the steps in the method of the second aspect.

[0010] In a seventh aspect, an embodiment of the present application provides a communication system, which includes the above-mentioned terminal device and / or network device. In another possible design, the system may also include other devices that interact with the terminal device or network device in the solution provided in the embodiment of the present application.

[0011] In an eighth aspect, an embodiment of the present application provides a computer-readable storage medium, which stores a computer program, and the computer program enables a communication device (for example, a terminal device or a network device) to execute part or all of the steps in the methods of the above aspects.

[0012] In a ninth aspect, embodiments of the present application provide a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program, wherein the computer program is 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 each of the above aspects. In some implementations, the computer program product can be a software installation package.

[0013] In the tenth aspect, an embodiment of the present application provides a chip, which includes a memory and a processor. The processor can call and run a computer program from the memory to implement some or all of the steps described in the methods of the above aspects.

[0014] In this embodiment of the present application, a terminal device obtains first information associated with the NTZ. The first information indicates one or more of the following: the geometric range of the NTZ the terminal device has entered; the geometric range of the NTZ the terminal device has left; or 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 implementing the NTZ function. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the wireless communication system 100 applied in the embodiment of the present application.

[0016] Figure 2It is a schematic flow chart of cell discontinuous reception (cell_DRX).

[0017] Figure 3 It is a schematic flowchart of the wireless communication method of an embodiment of the present application.

[0018] Figure 4 This is an example diagram of the combination scheme of Examples 1 to 3 of the present application.

[0019] Figure 5 This is an example diagram of a combination scheme of another embodiment 1 to embodiment 3 of the present application.

[0020] Figure 6 It is a schematic diagram of a terminal device according to an embodiment of the present application.

[0021] Figure 7 It is a schematic diagram of a network device according to an embodiment of the present application.

[0022] Figure 8 It is a schematic structural diagram of a communication device according to an embodiment of the present application. DETAILED DESCRIPTION

[0023] The technical solution in this application will be described below with reference to the accompanying drawings.

[0024] Figure 1 The wireless communication system 100 used in the embodiments of the present application 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 geographic area and may communicate with the terminal device 120 located within the coverage area.

[0025] Figure 1 One network device and two terminals are shown exemplarily. Optionally, the wireless communication system 100 may include multiple network devices and each network device may include another number of terminal devices within its coverage area, which is not limited in this embodiment of the present application.

[0026] Optionally, the wireless communication system 100 may further include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiment of the present application.

[0027] It should be understood that the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: fifth generation (5G) system or new radio (NR), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), etc. The technical solutions provided in this application can also be applied to future communication systems, such as the sixth generation mobile communication system, satellite communication system, etc.

[0028] The terminal device in the embodiments of the present application may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device. The terminal device in the embodiments of the present application may refer to a device that provides voice and / or data connectivity to a user and can be used to connect people, objects and machines, such as a handheld device with wireless connection function, a vehicle-mounted device, etc. The terminal device in the embodiments of the present application can be a mobile phone, a tablet computer, a laptop computer, a PDA, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, etc. Optionally, the UE can be used to act as a base station. For example, the UE can act as a scheduling entity that provides sidelink signals between UEs in V2X or D2D, etc. For example, a cellular phone and a car communicate with each other using sidelink signals. The cellular phone and smart home devices communicate without relaying the communication signal through the base station.

[0029] The network device in the embodiments of the present application may be a device for communicating with a terminal device, and may also be referred to as an access network device or a radio access network device. For example, the network device may be a base station. The network device in the embodiments of the present application may refer to a radio access network (RAN) node (or device) that connects a terminal device to a wireless network. A base station can broadly cover various names as follows, or be replaced with the following names, such as: NodeB, evolved NodeB (eNB), next generation NodeB (gNB), relay station, access point, transmission point (TRP), transmission point (TP), master station MeNB, secondary station SeNB, multi-standard radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, 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, a micro base station, a relay node, a donor node or the like, or a combination thereof. A base station can also refer to a communication module, a modem or a chip used to be set in the aforementioned device or apparatus. The base station can also be a mobile switching center and a device that performs base station functions in device-to-device D2D, vehicle-to-everything (V2X), and machine-to-machine (M2M) communications, a network-side device in a 6G network, or a device that performs base station functions in future communication systems. The base station can support networks with the same or different access technologies. The embodiments of this application do not limit the specific technology and specific device form used by the network equipment.

[0030] Base stations can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move based on the location of the mobile base station. In other examples, a helicopter or drone can be configured to act as a device that communicates with another base station.

[0031] In some deployments, the network device in the embodiments of the present application may refer to a CU or a DU, or the network device may include a CU and a DU. The gNB may also include an AAU.

[0032] The network equipment and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed in the air on aircraft, balloons, and satellites. The embodiments of this application do not limit the scenarios in which the network equipment and terminal devices are located.

[0033] It should be understood that all or part of the functions of the communication device in this application can also be implemented through software functions running on hardware, or through virtualization functions instantiated on a platform (such as a cloud platform).

[0034] To save power on access network devices (e.g., base stations), R18 introduced the network energy saving (NES) feature. One way to save power is to set a period of time during which the access network device does not receive uplink signals sent by the terminal device, namely cell_DRX. Figure 2 , the access network device notifies the terminal device of the cell_DRX configuration in advance. During this period, the access network device will not dynamically allocate physical uplink shared channel (PUSCH) resources to the terminal device, and the terminal device will not transmit uplink signals through the pre-configured physical uplink control channel (PUCCH) (such as scheduling request (SR), channel state information (CSI) reporting) or PUSCH resources (such as configured grant (CG)). In this way, the access network device can shut down the uplink receiving circuit, thereby saving power consumption of the access network device.

[0035] During cell_DRX, the relevant protocols also specify the behavior of the terminal device. If cell_DRX is turned on and the serving cell is not in the active period of cell_DRX, the terminal device can perform one or more of the following operations: not instructing the physical layer to send an SR signal through the PUCCH resource of the SR; not increasing the SR_COUNTER of the SR; not starting the SR-ProhibitTimer of the SR; not passing any configured uplink grant and associated HARQ information to the hybrid automatic repeat-request (HARQ) entity; not instructing the HARQ process associated with the configured uplink grant to trigger a new transmission or retransmission; not reporting periodic CSI and PUSCH-based semi-persistent CSI through the 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 Article 5.11 of the 5G protocol). It should be noted that how the medium access control (MAC) layer of the terminal device perceives the ongoing emergency service depends on the implementation of the terminal device.

[0036] However, in order to be compatible with terminal devices of versions prior to R18 in relevant protocols (e.g., 5G), as well as 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.

[0037] With the development of wireless cellular network technology, related protocols (such as 5G) have integrated 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 large-scale celebrations and disaster relief.

[0038] In existing communication systems, UAVs are connected to the network as terminal devices. As a terminal device, a UAV can perform normal downlink reception and uplink transmission in a wireless network. However, as a specialized terminal device, a UAV has some characteristics that differ from ordinary terminal devices. Due to its high physical location, the transmission path between a UAV and access network equipment (e.g., base stations) is typically line-of-sight (LOS) with minimal transmission loss. Furthermore, in urban areas, where access network equipment is densely populated, if a UAV uses an omnidirectional antenna to transmit uplink signals, or a directional antenna (where directional antenna performance is less than ideal), the uplink signal sent by the UAV to access network device A can interfere with neighboring access network devices B, C, and D. If a UAV is used in scenarios such as disaster relief, and the uplink signal it transmits has unsatisfactory directionality, it can interfere with sensitive equipment on the ground (e.g., medical equipment).

[0039] To address these issues, the Service and System Aspects Working Group 2 (SA2) of the 3rd Generation Partnership Project (3GPP) proposed the concept of NTZ. NTZ is used to indicate that in certain areas and at certain frequencies, the UAV does not send uplink signals but can receive downlink signals normally, thereby ensuring the normal operation of other devices.

[0040] As mentioned above, in some scenarios, uplink signals sent by terminal devices (e.g., UAVs) may interfere with other devices. The introduction of a NTZ can help address this issue. However, the terminal device may not be able to detect whether it has entered the NTZ, which can prevent the NTZ function from being implemented.

[0041] For example, if the terminal device is a UAV, introducing the NTZ during UAV communication can help prevent UAVs from sending uplink signals in urban areas or disaster relief scenarios, potentially interfering with other devices. However, UAVs cannot sense whether they have entered the NTZ, which may cause them to send uplink signals when entering the NTZ, affecting the implementation of the NTZ function.

[0042] To address the aforementioned issues, embodiments of the present application provide a wireless communication method in which a terminal device obtains first information associated with the NTZ. The first information indicates one or more of the following: the geometric range of the NTZ, the geometric range of the NTZ, or the frequency range of the NTZ. Based on this first information, the terminal device determines whether it has entered or exited the NTZ, thereby implementing NTZ functionality.

[0043] Combined with the following Figure 3The wireless communication method according to the embodiment of the present application is introduced. Figure 3 It is a schematic flowchart of the wireless communication method of an embodiment of the present application. Figure 3 The method shown includes step S310.

[0044] In step S310 , the terminal device obtains first information associated with the NTZ.

[0045] Because NTZ requires RAN support, SA2, which proposed the NTZ concept, hoped that the RAN would assist in completing NTZ standardization, but the RAN refused. As a result, the access layer of traditional terminal devices does not support the acquisition of first information.

[0046] To solve this problem, 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, or in other words, the non-access layer of the terminal device provides the first information to the access layer of the terminal device. Accordingly, the access layer of the terminal device obtains the first information associated with the NTZ from the non-access layer of the terminal device. The provision of the first information by the non-access layer of the terminal device helps to implement the NTZ function without increasing the access layer interface message of the terminal device. In some implementations, the non-access layer of the terminal device provides the first information to the access layer of the terminal device through an inter-layer primitive, or in other words, the non-access layer of the terminal device notifies the access layer of the terminal device of the first information through an inter-layer primitive.

[0047] 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 layer of a terminal device in conjunction with Example 1.

[0048] Embodiment 1: The non-access layer of the terminal device determines the first information.

[0049] In some implementations, the first information is determined based on the NTZ, which can be understood as the first information being determined by the non-access layer of the terminal device based on the NTZ information of the NTZ.

[0050] In some implementations, the NTZ information is determined based on a message provided by a core network device, or in other words, the core network device provides the NTZ information to the non-access layer of the terminal device.

[0051] In some implementations, the NTZ information is determined based on a message provided by a core network device. This can be understood as determining the NTZ information based on a non-access stratum (NAS) message sent by the core network device. In other words, the NTZ information is carried in a NAS message sent by the core network device to the non-access stratum of the terminal device, or in other words, the core network device provides the NTZ information to the non-access stratum of the terminal device via a NAS message. For example, if the terminal device has registered with the core network device, i.e., the attach process has been completed, and the core network device knows the tracking area (TA) location of the terminal device, the core network device access and mobility management function (AMF) network element can provide the NTZ information to the non-access stratum of the terminal device via a NAS message.

[0052] In some implementations, the NTZ information is determined based on a message provided by a core network device. This can be understood as determining the NTZ information based on a system message sent by the core network device to the non-access layer of the terminal device through the access network device. In other words, the NTZ information is carried in a system message sent by the core network device to the non-access layer of the terminal device through the access network device, or in other words, the core network device provides the NTZ information to the non-access layer of the terminal device through a system message sent by the access network device. For example, if the terminal device has not registered with the core network device, that is, has not performed an attachment process, the AMF network element of the core network device can provide the NTZ information to the access network device. The access network device does not parse the NTZ information, but transmits the NTZ information to the access layer of the terminal device through a system information block (SIB) message. The access layer of the terminal device obtains the NTZ information from the SIB message and submits it to the non-access layer of the terminal device.

[0053] In some implementations, 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 processes: a registration process initiated by the terminal device; a service request process initiated by the terminal device; a TA update process initiated by the terminal device.

[0054] In some implementations, the core network device indicates NTZ information to the non-access layer 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 layer of the terminal device when the terminal device initiates the registration process.

[0055] In some implementations, the core network device indicates NTZ information to the non-access layer 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 layer of the terminal device when the terminal device initiates the service request process.

[0056] In some implementations, the core network device indicates NTZ information to the non-access layer of the terminal device in the TA update (timing advance update, TA update) process initiated by the terminal device. It can be understood that the core network device provides NTZ information to the non-access layer of the terminal device when the terminal device initiates the TA update process.

[0057] In some implementations, the NTZ information is determined based on pre-configuration information of the terminal device.

[0058] In some implementations, the pre-configuration information of the terminal device includes NTZ information. For example, when the terminal device leaves the factory, the NTZ information is pre-stored in the memory of the terminal device.

[0059] In some implementations, the NTZ information is used to indicate one or more NTZs.

[0060] In some implementations, the NTZ indicated by the NTZ information is located within the TA where the terminal device is located.

[0061] In some implementations, the NTZ indicated by the NTZ information is located in one or more TAs adjacent to the TA where the terminal device is located.

[0062] 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.

[0063] In some implementations, the plurality of NTZs may be a plurality of discontinuous NTZs within the TA range. Of course, in the embodiment of the present application, the plurality of NTZs may also be a plurality of continuous NTZs.

[0064] In some implementations, when the terminal device initiates a registration process or a service process, the core network device indicates NTZ information to the non-access layer of the terminal device, and 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.

[0065] In some implementations, when the terminal device initiates a TA update process, the core network device indicates NTZ information to the non-access layer of the terminal device, where the NTZ information indicates one or more discontinuous NTZs within the TA where the terminal device is located.

[0066] In some implementations, the NTZ information includes information indicating a geometric range of the NTZ and / or information indicating a frequency range of the NTZ. For example, referring to Table 1, the NTZ information indicates NTZ1 and NTZ2, and includes information indicating the geometric ranges of NTZ1 and NTZ2 and information indicating the frequency ranges of NTZ1 and NTZ2.

[0067] Table 1

[0068] NTZ1 Geometry extent information Frequency range information NTZ2 Geometry extent information Frequency range information

[0069] In some implementations, the geometric extent of the NTZ is also referred to as the “special zone” above.

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

[0071] In some implementations, the geometric range of the NTZ may be a region on a horizontal plane, that is, a two-dimensional (2D) concept.

[0072] In other implementations, the geometric range of the NTZ may be a three-dimensional region, that is, a three-dimensional (3D) concept.

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

[0074] In some implementations, the information indicating the geometric extent of the NTZ includes coordinates of one or more center points of the NTZ and one or more radii of the NTZ.

[0075] In some implementations, the information indicating the geometric extent of the NTZ includes the coordinates of one or more NTZ center points and one or more NTZ radii. The geometric extent of the NTZ is a circular area within one or more horizontal planes. For example, the information indicating the geometric extent of NTZ1 includes the coordinates of two NT1Z center points and two NTZ1 radii. The geometric extent of NTZ1 is a circular area within two horizontal planes.

[0076] In some implementations, the circular areas within the multiple horizontal planes overlap, and the geometric extent of the NTZ is the union of the multiple circular areas. For example, the information indicating the geometric extent of NTZ1 includes the coordinates of two center points of NTZ1 and a radius of NTZ1. The geometric extent of NTZ1 is the circular areas within two horizontal planes. The circular areas within the two horizontal planes overlap, and the extents of NTZ1 are the union of the circular areas within the two horizontal planes.

[0077] In some other implementations, the information indicating the geometric extent of the NTZ includes the coordinates of one or more NTZ center points and one or more NTZ radii, and the geometric extent of the NTZ is one or more spherical regions. For example, the information indicating the geometric extent of NTZ2 includes the coordinates of two NTZ2 center points and one NTZ2 radius, and the geometric extent of NTZ2 is two spherical regions.

[0078] In some implementations, the aforementioned multiple spherical regions overlap, and the geometric extent of the NTZ is the union of the multiple spherical regions. In other words, the geometric extent of the NTZ is an irregular body. For example, the information indicating the geometric extent of NTZ2 includes the coordinates of two NTZ2 center points and a radius of NTZ2. The geometric extent of NTZ2 is two overlapping spherical regions, and the extents of NTZ2 are the union of the two spherical regions.

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

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

[0081] In some implementations, the multiple cylindrical regions overlap, and the geometric extent of the NTZ is the union of the multiple cylindrical regions. For example, the information indicating the geometric extent of an 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 an NTZ3 is two overlapping cylindrical regions, and the extents of several NTZ3s are the union of the two cylindrical regions.

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

[0083] In some implementations, the information indicating the frequency range of the NTZ includes frequency point information of one or more NTZs and / or information of 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. For another example, 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 geometric range of the terminal device entering the NTZ; the geometric range of the terminal device leaving the NTZ; and the frequency range of the NTZ.

[0086] In some implementations, the first information indicates that the terminal device has entered the geometric range of the NTZ. For example, the geometric range of NTZ1 is the union of multiple cylindrical areas, and the first information indicates that the terminal device has entered the union of multiple cylindrical areas. In another example, the NTZ information indicates NTZ1 and NTZ2. The non-access stratum of the terminal device determines that the terminal device has entered the geometric range of NTZ1 based on the NTZ information. The first information indicates that the terminal device has entered the geometric range of the NTZ.

[0087] In some implementations, the first information indicates the geometric range of the NTZ that the terminal device has left. For example, the geometric range of NTZ1 is the union of multiple cylindrical areas, and the first information indicates that the terminal device has left the union of multiple cylindrical areas. In another example, the NTZ information indicates NTZ1 and NTZ2. The non-access stratum of the terminal device determines the geometric range of all NTZ1s that the terminal device has left based on the NTZ information. The first information indicates that the terminal device has left 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 the geometric area of ​​the NTZ and whether the terminal device has left the geometric area of ​​the NTZ based on the positioning result of the positioning module. For example, the NTZ information is used to indicate NTZ1 and NTZ2. Initially, the terminal device is located outside the geometric areas of NTZ1 and NTZ2. After the terminal device moves, the positioning result of the positioning module indicates that the terminal device is located within the geometric area of ​​NTZ1 or NTZ2. The non-access stratum of the terminal device determines that the terminal device has entered the geometric area of ​​the NTZ. For another example, the NTZ information indicates NTZ1 and NTZ2. If the terminal device is located within the geometric area of ​​NTZ1 or NTZ2, after the terminal device moves, the positioning result of the positioning module indicates that the terminal device is not located within all the geometric areas of NTZ1 and NTZ2. The non-access stratum of the terminal device determines that the terminal device has left the geometric area of ​​the NTZ.

[0089] In some implementations, the 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 a frequency range of the NTZ.

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

[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 of the terminal device entering or leaving the NTZ indicated by the first information. For example, the NTZ information indicates NTZ1 and NTZ2, and the non-access stratum of the terminal device determines that the terminal device enters the geometric range of NTZ1. Therefore, it 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. For another example, the NTZ information indicates NTZ1 and NTZ2, and the non-access stratum of the terminal device determines that the terminal device leaves the geometric range of NTZ1. Therefore, it 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] Embodiment 2: The terminal device determines whether the terminal device 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. It can be understood that 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 enters the NTZ. That is to say, 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 the cell corresponding to the terminal device.

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

[0097] In other implementations, the cell corresponding to the terminal device may be a resident cell of the terminal device, that is, the cell corresponding to the terminal device may be a cell in which the terminal device currently resides.

[0098] In some implementations, the frequency range of the NTZ matches the frequency range of the cell corresponding to the terminal device. It can be understood that the frequency of the NTZ is consistent with the frequency of the service cell of the terminal device, or in other words, the frequency of the NTZ is the same as the frequency of the service cell of the terminal device, or in other words, the frequency of the service cell of the terminal device belongs to the frequency range of the NTZ.

[0099] In some implementations, the frequency range of the NTZ matches the frequency range of the cell corresponding to the terminal device. It can be understood that the frequency of the NTZ is consistent with the frequency of the cell where the terminal device resides, or in other words, the frequency of the NTZ is the same as the frequency of the cell where the terminal device resides, or in other words, the frequency of the cell where the terminal device resides belongs to the frequency range of the NTZ.

[0100] In some implementations, the first information is used to indicate a 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. For example, the first information carries the frequency of the NTZ, and the access layer of the terminal device obtains the frequency 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 of the cell corresponding to the terminal device.

[0101] In some implementations, the access layer of a terminal device provides the non-access layer of the terminal device with the frequency range of the cell corresponding to 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 of the cell corresponding to the terminal device and provides it to the non-access layer of the terminal device through an inter-layer primitive. 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 of the cell corresponding to the terminal device.

[0102] In other implementations, the first information is used to determine whether the terminal device enters or leaves the NTZ. It can be understood that if the first information indicates that the terminal device leaves the geometric range of the NTZ, it can be determined that the terminal device leaves the NTZ. That is to say, if the terminal device leaves the NTZ, the first information indicates that the terminal device leaves 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, the first information indicating the geometric range of the terminal device entering the NTZ and the frequency range of the NTZ. The access layer of the terminal device determines based on the first information that the frequency range of the NTZ matches the frequency range of the cell corresponding to the terminal device, and then the access layer of the terminal device determines that the terminal device enters the NTZ. For another example, the access layer of the terminal device obtains first information provided by the non-access layer of the terminal device, the first information indicating that the terminal device leaves the geometric range of the NTZ. The access layer of the terminal device determines based on the first information that the terminal device leaves 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, the NTZ information includes information for indicating the geometric range of the NTZ and information for indicating the frequency range of the NTZ. The non-access stratum of the terminal device determines whether the terminal device enters the geometric range of the NTZ based on the NTZ information. At the same time, 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 enters the NTZ. For another example, the NTZ information includes information for indicating the geometric range of the NTZ and information for indicating the frequency range of the NTZ. The non-access stratum of the terminal device determines whether the terminal device leaves the geometric range of the NTZ based on the NTZ information, thereby determining that the terminal device leaves the NTZ.

[0105] Embodiment 3: The terminal device performs corresponding operations based on the first information and / or the terminal device entering or leaving the NTZ.

[0106] Implementation method 3-1: If the terminal device enters the 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 an access layer of the terminal device; instructing an 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 an emergency call (such as 119, 110 or 120) request.

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

[0110] In some implementations, the first operation includes not providing a NAS message to the access layer of the terminal device. It can be understood that the non-access layer of the terminal device does not send a NAS message 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 does not deliver the NAS message 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, which 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 (INACTIVE) and the terminal device enters the 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 cell where the terminal device resides; lowering the priority of the cell where the terminal device resides; accessing a first cell, which is different from the cell where the terminal device resides.

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

[0115] In some implementations, the terminal device obtains the cell reselection priority through a system message sent by the network device. For example, the cell reselection priority is indicated by cellReselectionPriority, which is carried in the SIB2 sent by the network device to the terminal device. The value of cellReselectionPriority is an integer from 0 to 7. The terminal device obtains the cellReselectionPriority through SIB2 and stores it in memory. The terminal device can adjust (lower or increase) the value of cellReselectionPriority.

[0116] In some implementations, the first cell is different from the cell where the terminal device resides, which can be understood as that the carrier of the first cell is different from the carrier of the cell where the terminal device resides.

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

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

[0119] In some implementations, the second operation includes accessing a first cell different from the cell in which the terminal device resides. This can be understood as the access layer of the terminal device reselecting to a cell different from the cell in which the terminal device currently resides. For example, the cell in which the terminal device resides is cell A, and the first cell is cell B. Cells A and B have different carriers, and the access layer of the terminal device can access cell B.

[0120] In the implementation 3-3: if the terminal device is in an idle or inactive state and the terminal device leaves the NTZ, the access layer of the terminal device performs a 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 resident cell of the terminal device.

[0122] In some implementations, the second operation includes initiating random access in a cell that is not a resident cell of the terminal device, and the third operation includes canceling the second operation. It can be understood that the access layer of the terminal device can choose to initiate random access in the cell where it is currently resident.

[0123] In some implementations, the second operation includes lowering the priority of the cell where the terminal device resides, and the third operation includes canceling the second operation. It can be understood that the access layer of the terminal device does not lower the priority of the cell where the terminal device currently resides.

[0124] In some implementations, the second operation includes accessing a first cell different from the resident cell of the terminal device, and the third operation includes canceling the second operation. It can be understood that the access layer of the terminal device may not access the first cell different from the resident cell of the terminal device.

[0125] In some implementations, the third operation includes initiating random access in the cell where the terminal device resides, which can be understood as the access layer of the terminal device sending a message for random access in the cell where the terminal device currently resides. 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 currently resides.

[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 corresponding to the NTZ.

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

[0129] In some implementations, the cell associated with the frequency corresponding to the NTZ can be understood as a cell having the same frequency as the frequency corresponding to the NTZ, or in other words, a cell having a frequency within the frequency range of the NTZ.

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

[0131] In some implementations, if the terminal device is in an idle state, the terminal device 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. It can be understood that the frequency point of the NTZ is different from the frequency point of the cell where the terminal device currently resides, or in other words, the frequency point of the cell where the terminal device currently resides does not belong to the frequency range of the NTZ.

[0133] Implementation method 3-5: If the terminal device is in the connected state (CONNECT) and enters the 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 a timing advance timer (TAT) is running and has not timed out; considering that the TAT has timed out; and not initiating random access within a serving cell of the terminal device.

[0135] In some implementations, the fifth operation includes not sending an uplink signal when TAT is running and has not timed out. It can be understood that TAT continues to run, and before TAT times out, the access layer of the terminal device does not send an uplink signal to the access network device.

[0136] In some implementations, the fifth operation includes considering that the TAT has timed out. This may be understood as the TAT not having timed out, but the access layer of the terminal device considering that the TAT has timed out, and performing corresponding processing for the TAT timeout.

[0137] In some implementations, the fifth operation includes initiating random access not in the service cell of the terminal device. It can be understood that regardless of whether the TAT has timed out, the access layer of the terminal device does not send a message for random access to the access network device in the service cell of the terminal device.

[0138] In some implementations, the fifth operation includes deeming that the TAT has timed out and not initiating random access within the serving cell of the terminal device. This may be understood as the TAT not timed out, the access layer of the terminal device deeming that the TAT has timed out, and not sending a message for random access in the current serving cell of the terminal device. For example, the non-access layer of the terminal device determines that the terminal device has entered the NTZ, and the access layer of the terminal device receives an indication that the terminal device has entered the NTZ. At this point, the TAT has not timed out, but the access layer of the terminal device deems that the TAT has timed out and does not send message 1 or message A for random access to the access network device in the current serving cell of the terminal device.

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

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

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

[0142] In some other implementations, the duration of the first timer may be predefined, for example, the duration of the first timer is specified by a protocol.

[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 area of ​​the NTZ before the first timer expires, the sixth operation further includes the terminal device entering an idle state from a connected state.

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

[0147] In some implementations, the uplink data to be sent can be understood as the uplink data to be sent that has arrived at the access layer of the terminal device, or in other words, 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, random access is initiated in response to uplink data to be sent. It can be understood that if the terminal device has uplink data to be sent, the access layer of the terminal device sends a message for random access in the current serving cell.

[0150] Implementation method 3-8: If the terminal device is configured with conditional switching, the access layer of the terminal device determines whether to perform switching 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 determines, before performing conditional switching, based on the frequency range of the NTZ indicated by the first information, whether to initiate random access in a target cell, where the target cell is a cell that satisfies the switching condition in the conditional switching. That is, if the terminal device is configured for conditional switching and the first information indicates that the terminal device has entered the geometric range of the NTZ and the frequency range of the NTZ, before performing conditional switching, the access layer of the terminal device determines, based on the frequency range of the NTZ indicated by the first information, whether to initiate random access in the target cell that satisfies the switching condition.

[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. It can be understood that 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 switching and does not 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, which can be understood as the frequency of the target cell being the same as the frequency of the NTZ, or in other words, the frequency of the target cell belongs to the frequency range of the NTZ.

[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. It can be understood that 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 switching and initiates 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 may be understood as the frequency of the target cell being different from the frequency of the NTZ, or the frequency of the target cell not belonging to the frequency range of the NTZ.

[0156] In some implementations, the non-access layer of the terminal device provides updated first information to the access layer of the terminal device, where the updated first information indicates that the terminal device has left the geometric range of the NTZ, and the access layer of the terminal device performs conditional switching 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 the access layer of the terminal device determines whether to perform conditional switching to access or not access the target cell based on the conditions in the conditional switching.

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

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

[0160] Implementation method 3-9: If the terminal device is 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 is not registered with the core network device and the terminal device enters the NTZ, the access layer of the terminal device does not initiate random access in the resident cell of the terminal device.

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

[0163] In some implementations, if the access layer of the terminal device does not initiate access at any time in the cell where the terminal device resides, 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 is different from the frequency point of the NTZ, or in other words, the frequency point of the second cell does not belong to the frequency range of the NTZ.

[0165] Implementation method 3-10: The access layer of the terminal device sends a 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 may be an RRCReestablishmentRequest message used to request RRC re-establishment. For another example, the first request may be an RRCResumeRequest message used to request RRC recovery.

[0167] In some implementations, the first request is used to indicate that the reason for triggering 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 due to being located in the NTZ. Accordingly, upon receiving the first request, the access network device can learn the reason why the terminal device triggered 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, and the first condition includes one or more of the following: first information indicating that the terminal device has left the geometric range of the NTZ; the first timer started when the terminal device obtains the first information indicating that the terminal device has entered the geometric range of the NTZ expires.

[0169] In some implementations, the first request is triggered based on a first condition, where the 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 obtains the first information, and the first information indicates that the terminal device has left the geometric range of the NTZ, the access layer of the terminal device sends the first request to the access network device. For example, if the terminal device is in an inactive state, the access layer of the terminal device receives the first information, and the first information indicates that the terminal device has left the geometric range of the NTZ, the access layer of the terminal device may send the first request to the access network device, where the 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 cannot perform uplink transmission due to being located in the NTZ.

[0170] In some implementations, the first request is triggered based on a first condition, and the first condition includes a first message indicating that the terminal device has left the geometric range of the NTZ and a first timer timeout. It can be understood that 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, the terminal device enters the idle state, and the access layer of the terminal device receives the first message again, and the first message indicates 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, and 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. For another example, if the first timer started by a terminal device in a connected state times out, and the terminal device does not enter an idle state, during the period when the terminal device enters the NTZ, since the terminal device cannot send an uplink signal, it cannot respond to the downlink data and / or control message sent by the access network device. The access network device may not be able to know the reason why the terminal device does not send an uplink signal, which may cause the access network device to believe that the wireless link of the terminal device has failed. When the access layer of the terminal device receives the first information again, the first information indicates that the terminal device has left 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 the reason for indicating RRC recovery is that the terminal device cannot send uplink.

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

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

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

[0174] The above, in conjunction with Example 3, describes multiple implementations for a terminal device to perform corresponding operations based on the first information and / or the terminal device entering or leaving the NTZ. In some scenarios, these multiple implementations can be used independently. In other scenarios, these multiple implementations can be used in combination. The following examples illustrate scenarios in which multiple implementations of Example 3 are used in combination.

[0175] In some implementations, if a terminal device is in a connected state and enters the NTZ, the non-access stratum of the terminal device performs a first operation based on the solution of implementation 3-1, and the access stratum of the terminal device performs a fifth operation based on the solution of implementation 3-5. For example, if 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 an uplink signal when the TAT is running and has not timed out. If the terminal device enters the NTZ, the non-access stratum of the terminal device instructs the application layer of the terminal device to no longer 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 access layer of the terminal when the TAT is running and has not timed out.

[0176] In some implementations, if a 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 solution of implementation 3-2. Due to the movement of the terminal device, the terminal device determines based on the first information that the terminal device has left the NTZ, and the access layer of the terminal device performs a third operation based on the solution of implementation 3-2. For example, the second operation includes initiating anytime access not in the terminal device's resident 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 resident cell. When the terminal device leaves the NTZ, the access layer of the terminal device in an idle or inactive state may choose to initiate anytime access in the terminal device's resident 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 scheme of implementation 3-6, and sends a first request to the access network device based on the scheme of implementation 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, and the first request is triggered based on a first condition, and the first condition includes the first information indicating that the terminal device has left the geometric range of the NTZ and the first timer has expired. 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 does 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 the 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 has left the geometric area of ​​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 cannot perform uplink transmission because it is located in NTZ.

[0178] The above, in conjunction with Example 1, Example 2, and Example 3, respectively describe the schemes for determining first information by the non-access stratum of a terminal device, determining whether the terminal device has entered or left the NTZ by the terminal device, and performing corresponding operations based on the first information and / or the terminal device's entry into or exit from the NTZ. In some implementations, Example 1, Example 2, and Example 3 can be used independently. In other scenarios, Example 1, Example 2, and Example 3 can be used in combination with each other. The following examples illustrate a scheme in which Example 1, Example 2, and Example 3 are combined.

[0179] Combined with the following Figure 4 The following examples introduce the combination of Example 1, Example 2, Implementation 3-2 to Implementation 3-4, Implementation 3-10, and Implementation 3-11. Figure 4 Includes steps S401 to S411.

[0180] Assume that the terminal device has been registered with the core network device, the NTZ information includes information for indicating the geometric range of the NTZ and information for 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 resides is the cell reselection priority corresponding to the cell where the terminal device resides, which is configured using cellReselectionPriority and has 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 device to the non-access layer of the terminal device carries the NTZ information, and the non-access layer of the terminal device 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 that the current terminal device enters the geometric area of ​​the NTZ based on the information indicating the geometric range of the NTZ included in the NTZ information and the positioning result 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, where the first information indicates that the terminal device enters a geometric range of the NTZ and a frequency range of the NTZ.

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

[0188] The access layer of the terminal device determines, based on the first information, 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 enters the NTZ.

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

[0190] Because the terminal device is in an idle state and enters the NTZ, the access layer of the terminal device performs a second operation. The second operation includes not initiating random access in the cell where the terminal device resides and reducing the cellReselectionPriority value corresponding to the cell where the terminal device resides 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 current terminal device leaves the NTZ based on the information indicating the geometric range of the NTZ included in the NTZ information and the positioning result 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 first information, where the first information 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 leaves 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 operation and the fourth operation.

[0198] Because 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 corresponding to the NTZ. Therefore, the terminal device's access layer cancels the second operation in step S405 and increases the cellReselectionPriority value corresponding to the terminal device's resident cell in step S405 from 6 to 7. At this point, the terminal device can choose to initiate random access in the cell it is currently resident in.

[0199] In step S410, the access layer of 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 has left the geometric range of the NTZ. Since the first information in step S407 indicates that the terminal device has left the geometric area of ​​the NTZ, the first condition is met, thereby triggering the access layer of the terminal device to send a first request to the access network device. The first request is used to request RRC re-establishment, and at the same time 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, where the NAS message carries first indication information, and the first indication information instructs the terminal device to leave the NTZ.

[0203] Combined with the following Figure 5 The following examples introduce a solution combining Example 1, Example 2, and implementations 3-9. Figure 5 Includes steps S510 to S570.

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

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

[0206] The access network device obtains NTZ information.

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

[0208] The SIB message sent by the access network device carries the 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 delivers the 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 enters the geometric area of ​​the NTZ or leaves the geometric area of ​​the NTZ based on the information indicating the geometric range of the NTZ included in the NTZ information and the positioning result 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, where the first information indicates one or more of the following: the terminal device enters a geometric range of the NTZ, the terminal device leaves a geometric area of ​​the NTZ, and a 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, the access layer of the terminal device determines that if 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 enters 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 leaves 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 does not initiate random access in the cell where the terminal device resides; 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 initiates random access in the cell where the terminal device resides.

[0219] Combined with the above Figures 1 to 5 , describes the method embodiment of the present application in detail, and the following is combined with Figures 6 to 8 , the device embodiment of the present application is described in detail. It should be understood that the description of the method embodiment corresponds to the description of the device embodiment, so for parts not described in detail, reference can be made to the previous method embodiment.

[0220] Figure 6 It is a schematic diagram of a terminal device according to an embodiment of the present application. Figure 6 The terminal device 600 shown 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, where 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; and the frequency range of the NTZ.

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

[0223] In some implementations, the first information indicates the frequency range of the NTZ by carrying frequency 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 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; and / or if the terminal device leaves the NTZ, the first information indicates that the terminal device leaves the geometric range of the NTZ.

[0226] In some implementations, the first information is used to indicate a 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, configured to cause the non-access layer 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 layer 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.

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

[0229] In some implementations, if the terminal device leaves the NTZ, the terminal device further includes: an execution unit for performing a third operation at the access layer of the terminal device, and the third operation includes one or more of the following: canceling the second operation; initiating random access in the resident 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, and the fourth operation includes increasing the priority of the frequency corresponding to the NTZ.

[0231] In some implementations, if the terminal device is in a connected state and the terminal device enters the NTZ, the terminal device further includes: an execution unit, configured to cause 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 that TAT has timed out; and not initiating random access within the service 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 enters the geometric area of ​​the NTZ, the terminal device also includes: an execution unit for the access layer of the terminal device to perform a sixth operation, and the sixth operation includes 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 also 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 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 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 determination unit, configured to determine whether to initiate random access in the target cell based on the frequency range of the NTZ indicated by the first information before the access layer of the terminal device performs conditional switching; wherein the target cell is a cell that meets the switching conditions in the conditional switching.

[0236] In some implementations, the terminal device further includes: a providing unit, configured for the non-access layer of the terminal device to provide the updated first information to the access layer of the terminal device, wherein the updated first information indicates that the terminal device has left the geometric range of the NTZ; and an execution unit, configured for the access layer of the terminal device to execute the conditional switching to access or not access the target cell.

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

[0238] In some implementations, if the access layer of the terminal device does not initiate access at any time in the cell where the terminal device resides, the terminal device further includes: an access unit, used for the access layer of the terminal device to access a second cell, and the frequency range of the second cell does not match the frequency range of the NTZ.

[0239] In some implementations, the terminal device further includes: a sending unit, configured for the access layer of the terminal device to send a first request to the access network 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 the NTZ.

[0240] In some implementations, 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 times out, and the first timer is 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, configured for the non-access layer of the terminal device to send first indication information to a core network device, where the first indication information is 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 NTZ information of the NTZ.

[0243] In some implementations, the NTZ information is determined based on one or more of the following information: a NAS message sent by a core network device; a system message sent by the core network device through an 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 layer 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; a timing advance TA update process initiated by the terminal device.

[0245] In some implementations, the NTZ information is used to indicate one or more NTZs, the NTZ indicated by the NTZ information is located in the tracking area TA where the terminal device is located, and / or the NTZ indicated by the NTZ information is located in one or more TAs adjacent to the TA where the terminal device is located.

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

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

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

[0249] The receiving unit 710 is used for the access network device 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, 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-invasive zone NTZ.

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

[0252] In some implementations, the first information indicates the frequency range of the NTZ by carrying frequency 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 also used for the core network device to receive first indication information sent by the non-access layer of the terminal device, and the first indication information is 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 NTZ information of the NTZ.

[0256] In some implementations, the NTZ information is determined based on one or more of the following information: a non-access stratum NAS message sent by a core network device; a system message sent by the core network device through an 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 layer 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; a timing advance TA update process initiated by the terminal device.

[0258] In some implementations, the NTZ information is used to indicate one or more NTZs, the NTZ indicated by the NTZ information is located in the tracking area TA where the terminal device is located, and / or the NTZ indicated by the NTZ information is located in one or more TAs adjacent to the TA where the terminal device is located.

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

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

[0261] In an optional embodiment, the acquisition unit 610 may be a transceiver 830. The terminal device 600 may further include a processor 810 and a memory 820, specifically Figure 8 shown.

[0262] In an optional embodiment, the receiving unit 710 may be a transceiver 830. The terminal device 700 may further include a processor 810 and a memory 820, specifically as follows: Figure 8 shown.

[0263] Figure 8 It is a schematic structural diagram of a communication device according to an embodiment of the present application. Figure 8 The dotted line in the figure indicates that the unit or module is optional. The apparatus 800 can be used to implement the method described in the above method embodiment. The apparatus 800 can be a chip, a terminal device or a network device.

[0264] The device 800 may include one or more processors 810. The processor 810 may support the device 800 to implement the method described in the method embodiment above. 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 another general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, etc. The general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

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

[0266] The apparatus 800 may further include a transceiver 830. The processor 810 may communicate with other devices or chips via the transceiver 830. For example, the processor 810 may transmit and receive data with other devices or chips via the transceiver 830.

[0267] The present application also provides a computer-readable storage medium for storing a program. The computer-readable storage medium can be applied to a terminal or network device provided in the present application, and the program enables a computer to execute the method performed by the terminal or network device in each embodiment of the present application.

[0268] The present 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 the present application, and the program causes a computer to execute the method performed by the terminal or network device in each embodiment of the present application.

[0269] The embodiments of the present application also provide a computer program. The computer program can be applied to the terminal or network device provided in the embodiments of the present application, and the computer program enables a computer to execute the method performed by the terminal or network device in each embodiment of the present application.

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

[0271] In the embodiments of this application, the term "indication" may refer to a direct indication, an indirect indication, or an indication of an association. For example, "A indicates B" may refer to a direct indication of B, e.g., B can obtain information through A; it may refer to an indirect indication of B, e.g., A indicates C, e.g., B can obtain information through C; or it may refer to an association between A and B.

[0272] In the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship between indication and indication, configuration and configuration, etc.

[0273] In the embodiments of the present application, "pre-definition" or "pre-configuration" may be implemented by pre-storing corresponding codes, tables, or other methods that can be used to indicate relevant information in a device (e.g., a terminal device and a network device). The present application does not limit the specific implementation method. For example, pre-definition may refer to information defined in a protocol.

[0274] In the embodiments of the present application, the “protocol” may refer to a standard protocol in the communications field, for example, it may include an LTE protocol, an NR protocol, and related protocols used in future communication systems, and the present application does not limit this.

[0275] In the embodiments of this application, the term "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

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

[0277] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0278] The units described as separate components may or may not be physically separate, and 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 these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0279] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0280] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer 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 computer-readable storage medium. 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 a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be read by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital versatile disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

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

Claims

1. A wireless communication method, characterized in that: include: The terminal device obtains first information associated with the non-intrusive zone NTZ, where 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; Frequency range of the NTZ.

2. The method according to claim 1, characterized in that The first information is provided by the non-access layer of the terminal device to the access layer of the terminal device.

3. The method according to claim 1 or 2, characterized in that The first information indicates the frequency range of the NTZ by carrying the frequency point information of the NTZ.

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

5. The method according to any one of claims 1 to 4, characterized in that 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 the cell corresponding to the terminal device; and / or If the terminal device leaves the NTZ, the first information indicates the geometric range of the NTZ that the terminal device leaves.

6. The method according to claim 5, characterized in that 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.

7. The method according to any one of claims 1 to 6, characterized in that If the terminal device enters the NTZ, the method further includes: The non-access layer of the terminal device performs a first operation, where the first operation includes one or more of the following: Do not initiate an emergency call; No non-access stratum NAS messages are generated; Not providing a NAS message to the access layer of the terminal device; Instruct the application layer of the terminal device not to send service data.

8. The method according to any one of claims 1 to 7, characterized in that If the terminal device is in an idle or inactive state, and the terminal device enters the NTZ, the method further includes: The access layer of the terminal device performs a second operation, where the second operation includes one or more of the following: Not initiating random access in the resident cell of the terminal device; Lowering the priority of the cell where the terminal equipment resides; Access a first cell, where the first cell is different from a resident cell of the terminal device.

9. The method according to claim 8, characterized in that If the terminal device leaves the NTZ, the method further includes: The access layer of the terminal device performs a third operation, where the third operation includes one or more of the following: canceling the second operation; Initiate random access in the resident cell.

10. The method according to any one of claims 1 to 9, characterized in that If the terminal device is in an idle state and the terminal device leaves the NTZ, the method further includes: The access layer of the terminal device performs a fourth operation, and the fourth operation includes increasing the priority of the frequency corresponding to the NTZ.

11. The method according to any one of claims 1 to 10, characterized in that If the terminal device is in a connected state and the terminal device enters the NTZ, the method further includes: The access layer of the terminal device performs a fifth operation, where the fifth operation includes one or more of the following: When the timing advance timer TAT is running and has not timed out, no uplink signal is sent; The TAT is considered to have timed out; Random access is not initiated within the service cell of the terminal device.

12. The method according to any one of claims 1 to 11, characterized in that 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 includes: The access layer of the terminal device performs a sixth operation, and the sixth operation includes starting a first timer.

13. The method according to claim 12, characterized in that 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.

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

15. The method according to any one of claims 1 to 3, characterized in that 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 switching, 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; The target cell is a cell that meets the switching condition in the conditional switching.

16. The method according to claim 15, characterized in that The method further comprises: The non-access layer of the terminal device provides the updated first information to the access layer of the terminal device, and the updated first information indicates that the terminal device leaves the geometric range of the NTZ, and the access layer of the terminal device performs the conditional switching to access or not access the target cell.

17. The method according to any one of claims 1 to 16, characterized in that 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 resident cell of the terminal device; If the terminal device leaves the NTZ, the access layer of the terminal device initiates random access in the cell where the terminal device resides.

18. The method according to claim 17, characterized in that If the access layer of the terminal device does not initiate access at any time in the cell where the terminal device resides, 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 according to any one of claims 1 to 18, characterized in that The method further comprises: The access layer of the terminal device sends a first request for requesting radio resource control RRC recovery or RRC re-establishment to the access network device, where 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 is unable to perform uplink transmission; The terminal device cannot perform uplink transmission because it is located in the NTZ.

20. The method of claim 19, wherein: The first request is triggered based on a first condition, where 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 times out, wherein 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 according to any one of claims 1 to 20, characterized in that The method further comprises: The non-access layer of the terminal device sends first indication information to the core network device, where the first indication information is used to instruct the terminal device to leave the NTZ.

22. The method according to any one of claims 1 to 21, characterized in that 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: NAS messages sent by core network devices; The core network device sends a system message through the access network device; The pre-configuration information of the terminal device.

24. The method according to claim 22 or 23, characterized in that 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 processes: The registration process initiated by the terminal device; The service request process initiated by the terminal device; The timing advance TA update process initiated by the terminal device.

25. The method according to any one of claims 22 to 24, characterized in that The NTZ information is used to indicate one or more NTZs, and the NTZ indicated by the NTZ information is located in the tracking area TA where the terminal device is located, and / or The NTZ indicated by the NTZ information is located in one or more TAs adjacent to the TA where the terminal device is located.

26. The method according to any one of claims 22 to 25, characterized in that The NTZ information includes information indicating a geometric range of the NTZ and / or information indicating a frequency range of the NTZ.

27. The method according to any one of claims 1 to 26, characterized in that 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; The NTZ is high.

28. A wireless communication method, characterized in that: include: The access network device receives a first request sent by the access layer of the terminal device for requesting radio resource control RRC recovery or RRC re-establishment, where 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 is unable to perform uplink transmission; The terminal device cannot perform uplink transmission because it is located in the non-intrusive zone NTZ.

29. The method of claim 28, wherein: The first request is triggered based on a first condition, where the first condition includes one or more of the following: First information indicates that the terminal device leaves the geometric range of the NTZ, and the first information is provided by the non-access layer of the terminal device to the access layer of the terminal device; A first timer times out, wherein the first timer is started when the terminal device acquires first information indicating that the terminal device enters the geometric range of the NTZ.

30. The method of claim 29, 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; Frequency range of the NTZ.

31. The method of claim 30, wherein: The first information indicates the frequency range of the NTZ by carrying the frequency point information of the NTZ.

32. The method according to claim 30 or 31, characterized in that The first information is used to determine whether the terminal device enters or leaves the NTZ.

33. The method according to any one of claims 28 to 32, characterized in that The method further comprises: The core network device receives first indication information sent by the non-access layer of the terminal device, where the first indication information is used to instruct the terminal device to leave the NTZ.

34. The method according to any one of claims 29 to 32, characterized in that The first information is determined by the non-access layer of the terminal device based on NTZ information of the NTZ.

35. The method of claim 34, wherein: The NTZ information is determined based on one or more of the following information: Non-access layer NAS messages sent by core network devices; The core network device sends a system message through the access network device; The pre-configuration information of the terminal device.

36. The method according to claim 34 or 35, characterized in that 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 processes: The registration process initiated by the terminal device; The service request process initiated by the terminal device; The timing advance TA update process initiated by the terminal device.

37. The method according to any one of claims 34 to 36, characterized in that The NTZ information is used to indicate one or more NTZs, and the NTZ indicated by the NTZ information is located in the tracking area TA where the terminal device is located, and / or The NTZ indicated by the NTZ information is located in one or more TAs adjacent to the TA where the terminal device is located.

38. The method according to any one of claims 34 to 37, characterized in that The NTZ information includes information indicating a geometric range of the NTZ and / or information indicating a frequency range of the NTZ.

39. The method according to any one of claims 29 to 38, characterized in that 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; The NTZ is high.

40. A terminal device, characterized in that: include: An acquiring unit is used for a terminal device to acquire first information associated with a non-intrusive zone NTZ, where 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; Frequency range of the NTZ.

41. The terminal device according to claim 40, characterized in that: The first information is provided by the non-access layer of the terminal device to the access layer of the terminal device.

42. The terminal device according to claim 40 or 41, characterized in that: The first information indicates the frequency range of the NTZ by carrying the frequency point information of the NTZ.

43. The terminal device according to any one of claims 40 to 42, characterized in that: The first information is used to determine whether the terminal device enters or leaves the NTZ.

44. The terminal device according to any one of claims 40 to 43, characterized in that: 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 the cell corresponding to the terminal device; and / or If the terminal device leaves the NTZ, the first information indicates the geometric range of the NTZ that the terminal device leaves.

45. The terminal device according to claim 44, characterized in that 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.

46. ​​The terminal device according to any one of claims 40 to 45, characterized in that: If the terminal device enters the NTZ, the terminal device further includes: An execution unit, configured for the non-access layer of the terminal device to perform a first operation, where the first operation includes one or more of the following: Do not initiate an emergency call; No non-access stratum NAS messages are generated; Not providing a NAS message to the access layer of the terminal device; Instruct the application layer of the terminal device not to send service data.

47. The terminal device according to any one of claims 40 to 46, characterized in that: If the terminal device is in an idle or inactive state and the terminal device enters the NTZ, the terminal device further includes: An execution unit, configured for the access layer of the terminal device to execute a second operation, where the second operation includes one or more of the following: Not initiating random access in the resident cell of the terminal device; Lowering the priority of the cell where the terminal equipment resides; Access a first cell, where the first cell is different from a resident cell of the terminal device.

48. The terminal device according to claim 47, characterized in that: If the terminal device leaves the NTZ, the terminal device further includes: An execution unit, configured for the access layer of the terminal device to execute a third operation, wherein the third operation includes one or more of the following: canceling the second operation; Initiate random access in the resident cell.

49. The terminal device according to any one of claims 40 to 48, characterized in that: If the terminal device is in an idle state and the terminal device leaves the NTZ, the terminal device further includes: An execution unit is used for the access layer of the terminal device to perform a fourth operation, and the fourth operation includes increasing the priority of the frequency corresponding to the NTZ.

50. The terminal device according to any one of claims 40 to 49, characterized in that: If the terminal device is in a connected state and the terminal device enters the NTZ, the terminal device further includes: An execution unit, configured for the access layer of the terminal device to execute a fifth operation, wherein the fifth operation includes one or more of the following: When the timing advance timer TAT is running and has not timed out, no uplink signal is sent; It is considered that TAT has expired; Random access is not initiated within the service cell of the terminal device.

51. The terminal device according to any one of claims 40 to 50, characterized in that: 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 terminal device further includes: An execution unit is used for the access layer of the terminal device to perform a sixth operation, and the sixth operation includes starting a first timer.

52. The terminal device according to claim 51, characterized in that: If the access layer of the terminal device does not receive a downlink signal before the first timer expires, the sixth operation also includes the terminal device entering an idle state from the connected state.

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

54. The terminal device according to any one of claims 40 to 42, characterized in that: If the first information indicates that the terminal device has entered 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 switching, 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 switching condition in the conditional switching.

55. The terminal device according to claim 54, characterized in that: The terminal device further includes: A providing unit, used for the non-access layer of the terminal device to provide the updated first information to the access layer of the terminal device, wherein the updated first information indicates that the terminal device has left the geometric range of the NTZ; and an execution unit, used for the access layer of the terminal device to execute the conditional switching to access or not access the target cell.

56. The terminal device according to any one of claims 40 to 55, characterized in that: The terminal device is not registered with the core network device, and the terminal device further includes: An initiating unit, for initiating random access by an access layer of the terminal device not in a resident cell of the terminal device if the terminal device enters the NTZ; If the terminal device leaves the NTZ, the initiating unit is further configured for the access layer of the terminal device to initiate random access in the resident cell of the terminal device.

57. The terminal device according to claim 56, characterized in that: If the access layer of the terminal device does not initiate access at any time in the cell where the terminal device resides, the terminal device further includes: An access unit is used for the access layer of the terminal device to access a second cell, and the frequency range of the second cell does not match the frequency range of the NTZ.

58. The terminal device according to any one of claims 40 to 57, characterized in that: The terminal device further includes: A sending unit, configured for the access layer of the terminal device to send a first request for requesting radio resource control RRC recovery or RRC re-establishment to an access network device, wherein the first request is used to indicate that a cause 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 cannot perform uplink transmission because it is located in the NTZ.

59. The terminal device according to claim 58, characterized in that: The first request is triggered based on a first condition, where 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 times out, wherein the first timer is started when the terminal device acquires first information indicating that the terminal device enters the geometric range of the NTZ.

60. The terminal device according to any one of claims 40 to 59, characterized in that: The terminal device further includes: A sending unit is used for the non-access layer of the terminal device to send first indication information to the core network device, where the first indication information is used to instruct the terminal device to leave the NTZ.

61. The terminal device according to any one of claims 40 to 60, characterized in that: 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 according to claim 61, characterized in that: The NTZ information is determined based on one or more of the following information: NAS messages sent by core network devices; The core network device sends a system message through the access network device; The pre-configuration information of the terminal device.

63. The terminal device according to claim 60 or 62, characterized in that: 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 processes: The registration process initiated by the terminal device; The service request process initiated by the terminal device; The timing advance TA update process initiated by the terminal device.

64. The terminal device according to any one of claims 61 to 63, characterized in that: The NTZ information is used to indicate one or more NTZs, and the NTZ indicated by the NTZ information is located in the tracking area TA where the terminal device is located, and / or The NTZ indicated by the NTZ information is located in one or more TAs adjacent to the TA where the terminal device is located.

65. The terminal device according to any one of claims 61 to 63, characterized in that: The NTZ information includes information indicating a geometric range of the NTZ and / or information indicating a frequency range of the NTZ.

66. The terminal device according to any one of claims 40 to 65, characterized in that: 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; The NTZ is high.

67. A network device, characterized in that: include: A receiving unit, configured for an access network device to receive a first request sent by an 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 a cause 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 cannot perform uplink transmission because it is located in the non-intrusive zone NTZ.

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

69. The network device according to claim 68, characterized in that 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; Frequency range of the NTZ.

70. The network device according to claim 69, characterized in that The first information indicates the frequency range of the NTZ by carrying the frequency point information of the NTZ.

71. The network device according to claim 69 or 70, characterized in that: The first information is used to determine whether the terminal device enters or leaves the NTZ.

72. The network device according to any one of claims 67 to 71, characterized in that: The network device also includes: The receiving unit is also used for the core network device to receive first indication information sent by the non-access layer of the terminal device, where the first indication information is used to instruct the terminal device to leave the NTZ.

73. The network device according to any one of claims 68 to 71, characterized in that: The first information is determined by the non-access layer of the terminal device based on NTZ information of the NTZ.

74. The network device according to claim 73, characterized in that The NTZ information is determined based on one or more of the following information: Non-access layer NAS messages sent by core network devices; The core network device sends a system message through the access network device; The pre-configuration information of the terminal device.

75. The network device according to claim 73 or 74, characterized in that: 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 processes: The registration process initiated by the terminal device; The service request process initiated by the terminal device; The timing advance TA update process initiated by the terminal device.

76. The network device according to any one of claims 73 to 75, characterized in that: The NTZ information is used to indicate one or more NTZs, and the NTZ indicated by the NTZ information is located in the tracking area TA where the terminal device is located, and / or The NTZ indicated by the NTZ information is located in one or more TAs adjacent to the TA where the terminal device is located.

77. The network device according to any one of claims 73 to 76, characterized in that: The NTZ information includes information indicating a geometric range of the NTZ and / or information indicating a frequency range of the NTZ.

78. The network device according to any one of claims 68 to 77, characterized in that: 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; The NTZ is high.

79. A terminal device, characterized in that: It comprises a transceiver, a memory and a processor, wherein the memory is used to store programs, and the processor is used to call the programs in the memory and control the transceiver to receive or send signals so that the terminal executes the method as described in any one of claims 1 to 27.

80. A network device, characterized in that: It comprises a transceiver, a memory and a processor, wherein the memory is used to store programs, and the processor is used to call the programs in the memory and control the transceiver to receive or send signals so that the network device executes the method as described in any one of claims 28-39.

81. A device, characterized in that The device comprises a processor, configured to call a program from a memory so as to cause the device to execute a method as claimed in any one of claims 1 to 39.

82. A chip, characterized in that: It comprises a processor, which is used to call a program from a memory so that a device equipped with the chip executes a method as described in any one of claims 1 to 39.

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

84. A computer program product, characterized in that The method comprises a program which causes a computer to execute the method according to any one of claims 1 to 39.

85. A computer program, characterized in that The computer program enables a computer to execute the method according to any one of claims 1 to 39.

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