Wireless communication method and communication equipment

Abstract

The invention provides a communication method and a communication device. The wireless communication method comprises: a first UE receiving first information; wherein the first information is used for indicating a network access mode corresponding to the emergency service of the first UE. According to the embodiment of the invention, the first information is sent to the first UE, so that the network access mode of the first UE when the emergency service occurs is determined.

Description

Wireless communication method and communication device Technical Field

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

[0002] In a communication system, when an emergency occurs, a user equipment (UE) can initiate an emergency service. However, when the UE needs to initiate an emergency service, how to access the network is an urgent problem to be solved.

[0003] Summary of the Invention

[0004] The present application provides a wireless communication method and a communication device. The following introduces various aspects involved in the present application.

[0005] In a first aspect, a wireless communication method is provided, including: a first UE receives first information; wherein the first information is used to indicate a network access method corresponding to an emergency service of the first UE.

[0006] In a second aspect, a wireless communication method is provided, characterized in that it includes: a first communication device sends first information to a first UE; wherein the first information is used to indicate a network access method corresponding to an emergency service of the first UE.

[0007] According to a third aspect, a communication device is provided, which is a first UE. The first UE includes: a communication module for receiving first information; wherein the first information is used to indicate a network access method corresponding to an emergency service of the first UE.

[0008] In a fourth aspect, a communication device is provided, which is a first communication device, and the first communication device includes: a communication module for sending first information to a first user equipment UE; wherein the first information is used to indicate a network access method corresponding to an emergency service of the first UE.

[0009] In a fifth aspect, a communication device is provided, comprising 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 information, so that the communication device executes the method described in the first aspect or the second aspect.

[0010] In a sixth aspect, a device is provided, comprising a transceiver and a processor, wherein the processor is used to call a program from a memory and control the transceiver to receive or send information, so that the device executes the method described in the first aspect or the second aspect.

[0011] In a seventh aspect, a chip is provided, comprising a processor for calling a program from a memory so that a device equipped with the chip executes the method described in the first aspect or the second aspect.

[0012] In an eighth aspect, a computer-readable storage medium is provided, on which a program is stored, wherein the program enables a computer to execute the method described in the first aspect or the second aspect.

[0013] In a ninth aspect, a computer program product is provided, comprising a program, wherein the program enables a computer to execute the method as described in the first aspect or the second aspect.

[0014] In a tenth aspect, a computer program is provided, which enables a computer to execute the method as described in the first aspect or the second aspect.

[0015] The embodiment of the present application clarifies the network access method of the first UE when an emergency service occurs by sending the first information to the first UE. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] FIG1 is a system architecture diagram of a communication system to which an embodiment of the present application can be applied.

[0017] Figure 2 is a system architecture diagram of the 5G system.

[0018] FIG3 is an architecture diagram of a layer 3-based UE to network (U2N) relay.

[0019] FIG4 is an architecture diagram of a layer 2-based U2N relay.

[0020] FIG5 is a diagram illustrating a possible discovery process in a U2N relay scenario.

[0021] FIG6 is a diagram illustrating another possible discovery process in a U2N relay scenario.

[0022] FIG7 is a flow chart of a wireless communication method provided in an embodiment of the present application.

[0023] FIG8 is a more specific flowchart of the method shown in FIG7 .

[0024] FIG9 is another more specific flowchart of the method shown in FIG7 .

[0025] FIG10 is another more specific flowchart of the method shown in FIG7 .

[0026] FIG11 is a schematic structural diagram of a communication device provided in one embodiment of the present application.

[0027] FIG12 is a schematic structural diagram of a communication device provided in another embodiment of the present application.

[0028] FIG13 is a schematic diagram of the structure of the device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0029] The embodiments of the present application can be applied to various communication systems. For example, the embodiments of the present application can be applied to global system of mobile communication (GSM) system, code division multiple access (CDMA) system, wideband code division multiple access (WCDMA) system, general packet radio service (GPRS), long term evolution (LTE) system, advanced long term evolution (LTE-A) system, new radio (NR) system, evolution system of NR system, LTE (LTE-based access to unlicensed spectrum, LTE-U) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum, NR-U) system on unlicensed spectrum, universal mobile telecommunication system (UMTS), wireless local area networks (WLAN), wireless fidelity (WiFi), fifth generation communication (5th-generation, 5G) system. The embodiments of the present application can also be applied to other communication systems, such as future communication systems. The future communication system may be, for example, a sixth-generation (6G) mobile communication system or a satellite communication system.

[0030] Traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, communication systems can support not only traditional cellular communications, but also one or more other types of communications. For example, a communication system can support one or more of the following communications: device to device (D2D) communication, machine to machine (M2M) communication, machine type communication (MTC), vehicle to vehicle (V2V) communication, and vehicle to everything (V2X) communication, etc. The embodiments of the present application can also be applied to communication systems that support the above-mentioned communication methods.

[0031] The communication system in the embodiment of the present application can be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, and a standalone (SA) networking scenario.

[0032] The communication system in the embodiments of the present application can be applied to unlicensed spectrum. The unlicensed spectrum can also be considered a shared spectrum. Alternatively, the communication system in the embodiments of the present application can also be applied to licensed spectrum. The licensed spectrum can also be considered a dedicated spectrum.

[0033] The embodiments of the present application can be applied to terrestrial networks (TN) systems as well as non-terrestrial networks (NTN) systems. As an example, the NTN system can include an NR-based NTN system and an Internet of Things (IoT)-based NTN system.

[0034] A communication system may include one or more UEs. The UE mentioned in the embodiments of the present application may also be referred to as a terminal device, access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user equipment, etc.

[0035] In some embodiments, the UE may be a station (ST) in a WLAN. In some embodiments, the UE may also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA) device, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a UE in a next-generation communication system (e.g., a NR system), or a UE in a future-evolved public land mobile network (PLMN) network.

[0036] In some embodiments, a UE may refer to a device that provides voice and / or data connectivity to a user. For example, a UE may be a handheld device, an in-vehicle device, etc. with wireless connection capabilities. As some specific examples, the UE may 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.

[0037] In some embodiments, the UE may be deployed on land. For example, the UE may be deployed indoors or outdoors. In some embodiments, the UE may be deployed on water, such as on a ship. In some embodiments, the UE may be deployed in the air, such as on an airplane, a balloon, or a satellite.

[0038] In addition to the UE, the communication system may also include one or more network devices. The network device in the embodiment of the present application may be a device for communicating with the UE, and the network device may also be referred to as an access network device or a radio access network device. The network device may be, for example, a base station. The network device in the embodiment of the present application may refer to an access network (radio access network, RAN) node (or device) that connects the UE to a wireless network. Access network equipment can broadly cover various names as follows, or replace the following names, such as: NodeB, evolved NodeB (eNB), next generation NodeB (gNB), relay station, access point, transmitting and receiving point (TRP), transmitting 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. The base station can be a macro base station, a micro base station, a relay node, a donor node, or the like, or a combination thereof. The base station may also refer to a communication module, modem or chip provided in the aforementioned device or apparatus. The base station may also be a mobile switching center and a device-to-device D2D, vehicle-to-everything (V2X), machine-to-machine (M2M) communication device that performs the base station function, a network side device in a 6G network, a device that performs the base station function in a future communication system, etc. The base station may support networks with the same or different access technologies. The embodiments of the present application do not limit the specific technology and specific device form adopted by the network equipment.

[0039] 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.

[0040] In some deployments, the network device in the embodiments of the present application may refer to a CU or a DU, or the network device includes a CU and a DU. The gNB may also include an AAU.

[0041] As an example and not a limitation, in an embodiment of the present application, the network device may have a mobile feature, for example, the network device may be a mobile device. In some embodiments of the present application, the network device may be a satellite or a balloon station. For example, the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, etc. In some embodiments of the present application, the network device may also be a base station set up in a location such as land or water.

[0042] In an embodiment of the present application, the network device can provide services for a cell, and the UE communicates with the network device through the transmission resources used by the cell (for example, frequency domain resources, or spectrum resources). The cell can be a cell corresponding to the network device (for example, a base station). The cell can belong to a macro base station or a base station corresponding to a small cell. The small cells here may include: metro cells, micro cells, pico cells, femto cells, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0043] For example, FIG1 is a schematic diagram of the architecture of a communication system provided in an embodiment of the present application. As shown in FIG1 , the communication system 100 may include a network device 110, which may be a device for communicating with a UE 120 (or a communication terminal or terminal). The network device 110 may provide communication coverage for a specific geographic area and may communicate with UEs located within the coverage area.

[0044] FIG1 exemplarily shows a network device and two UEs. In some embodiments of the present application, the communication system 100 may include multiple network devices and each network device may include another number of UEs within its coverage area, which is not limited in the embodiments of the present application.

[0045] In some embodiments of the present application, the wireless communication system shown in Figure 1 may also include other network entities such as a mobility management entity (MME) and an access and mobility management function (AMF), but the embodiments of the present application are not limited to this.

[0046] It should be understood that in the embodiments of the present application, a device having a communication function in a network / system may be referred to as a communication device. Taking the communication system 100 shown in FIG1 as an example, the communication device may include a network device 110 and a UE 120 having a communication function. Network device 110 and UE 120 may be the specific devices described above and will not be described in detail here. The communication device may also include other devices in the communication system 100, such as a network controller, a mobility management entity, and other network entities, which are not limited in the embodiments of the present application.

[0047] 5G system architecture

[0048] As shown in Figure 2, the 5G system architecture can include three parts, namely the UE part, the data network (DN) part and the operator network part. The operator network can include one or more of the following functional entities: access network (AN) equipment, user plane function (UPF) entity, access and mobility management function (AMF) entity, session management function (SMF) entity, policy control function (PCF) entity, application function (AF) entity, network slice selection function (NSSF) entity, authentication and authorization service function (AUSF) entity, unified data management (UDM) entity, etc. In the above-mentioned operator network, the part other than the access network equipment part can be called the core network part, and the functional entities of the core network part can be called core network elements or core network equipment.

[0049] With the continuous development of 5G applications, 5G can support more and more business forms. For example, network controlled interactive services (NCIS) are introduced into the standard as a new business form to carry out related standardized services. NCIS services are mainly aimed at applications such as augmented reality (AR) / virtual reality (VR), games, etc. Therefore, NCIS services have very high requirements for service quality such as rate, latency, packet loss rate, and high-speed encoding and decoding. For example: VR games require the network data transmission rate to reach 10Gbps, and the packet loss rate cannot exceed 10E-4. The session established for the NCIS service is an NCIS session, and the UEs in the same NCIS session can be considered to form an NCIS group, such as a team in a game.

[0050] U2N relay

[0051] The 3rd Generation Partnership Project (3GPP) R17 introduced Proximity Services (ProSe) to design communication solutions for short-range services. For example, ProSe supports services such as the NCIS mentioned above. A key ProSe scenario is U2N relay. U2N relay uses a relay UE to relay data for a remote UE, enabling the remote UE to communicate with the network.

[0052] U2N relay includes U2N relay based on layer 3 and U2N relay based on layer 2. The following describes the two U2N relay modes respectively with reference to FIG3 and FIG4.

[0053] Figure 3 shows a simplified system architecture for Layer 3-based U2N relay. As shown in Figure 3, a PC5 link is established between the remote UE and the relay UE (or, the remote UE and the relay UE are connected via a PC5 interface). The relay UE relays data from the remote UE using a protocol data unit (PDU) session. A PDU session can transmit data of a specific type, such as IPv4, IPv6, Ethernet, or Unstructured. In other words, only data of that type can be transmitted using the corresponding PDU session.

[0054] Figure 4 shows a simplified system diagram of a Layer 2-based U2N relay. As can be seen from Figure 4, in the Layer 2-based U2N relay architecture, the remote UE has its own core network elements, namely the remote UE AMF, remote UE SMF, and remote UE UPF in Figure 4. To implement relay communication, the relay UE and the remote UE need to obtain necessary configuration parameters before relay communication begins. These configuration parameters can come from the PCF or application server, or they can be pre-configured in the UE or subscriber identity module (SIM) card. Before transmitting data, the remote UE needs to first discover a suitable relay UE and establish a PC5 connection with it.

[0055] In R17, relay discovery can be performed in either Model A or Model B. Figure 5 illustrates the discovery process for Model A. In Model A, the relay UE (i.e., UE 1 in Figure 5) actively broadcasts (e.g., UE 1 broadcasts a discovery notification message to UEs 2 through 5 in Figure 5) a relay service code (RSC) indicating that it can provide relay services. After the discovery process, the relay UE establishes a PC5 connection with the remote UE.

[0056] Figure 6 illustrates the discovery process for Mode B. In Mode B, the remote UE (i.e., UE 1 in Figure 6 ) first sends the RSC it needs (e.g., via a discovery request message in Figure 6 ). If there is a nearby relay UE that supports the RSC (i.e., the service corresponding to the RSC), the relay UE responds to the remote UE (e.g., via a discovery response message in Figure 6 ). After the discovery process, the relay UE and the remote UE establish a PC5 connection.

[0057] An RSC represents a service. In a Layer 3 U2N relay architecture, core network elements can configure the mapping between the RSC, the data network name (DNN), and the slice for the UE. This allows the remote UE to select the appropriate relay UE for the service.

[0058] When a remote UE needs to initiate an emergency service, it must first select a relay UE. To ensure that the remote UE selects the appropriate relay UE, the core network element can also configure whether the RSC can provide emergency services. Alternatively, a special format (or special value) for the RSC can be set for emergency services, eliminating the need to configure the RSC for emergency services.

[0059] In some communication systems (such as 5G systems), if the network supports emergency services, the access network equipment will broadcast the network's support for emergency services in the system information block (SIB) message. In addition, the AMF can also notify the UE whether the network supports emergency services during the UE's registration process with the core network. In this way, the UE can be informed of the network's ability to support emergency services.

[0060] If the network can directly support emergency services through the air interface (Uu interface), and there is also a relay network around the UE that supports emergency services, then how to access the network when emergency services need to be initiated is an urgent problem to be solved.

[0061] If the above problems are not well solved, many problems may arise. For example, regulatory agencies in some regions may require that when the UE can directly initiate emergency services through the air interface, the UE needs to initiate emergency services through a direct connection; regulatory agencies in some regions may not have such requirements. If the initiation method of the emergency service is not appropriate, it may not meet the local (national or regional) regulatory requirements. For example, if the UE always simply chooses to initiate emergency services directly through the air interface, it may cause a waste of the deployment method of the relay network, and may even cause the UE to re-access the network, thereby affecting other non-emergency services.

[0062] The wireless communication method provided by the embodiments of the present application is described in detail below.

[0063] Figure 7 is a schematic flow chart of a wireless communication method provided in an embodiment of the present application. As shown in Figure 7 , the method of Figure 7 is executed by a first UE and a first communication device.

[0064] In some embodiments, the first UE may be a remote UE, and the first communication device may be an access network device.

[0065] In some embodiments, the first UE may be a remote UE, and the first communication device may be a mobility management element of a core network. Taking 5G as an example, the mobility management element may be an AMF.

[0066] In some embodiments, the first UE may be a remote UE, and the first communication device may be a policy control element of a core network. Taking 5G as an example, the policy control element may be a PCF.

[0067] In some embodiments, the first UE may be a remote UE, and the first communication device may be a relay UE.

[0068] In some embodiments, the first UE may be a relay UE, and the first communication device may be a mobility management network element of a core network. Taking 5G as an example, the mobility management network element may be an AMF.

[0069] In some embodiments, the first UE may be a relay UE, and the first communication device may be a policy control element of a core network. Taking 5G as an example, the policy control element may be a PCF.

[0070] In some embodiments, the first UE may be a relay UE, and the first communication device may be an access network device.

[0071] 7 , in step S710 , a first UE receives first information sent by a first communication device. The first information may be used to indicate a network access method corresponding to an emergency service of the first UE.

[0072] The embodiment of the present application does not specifically limit the type of emergency service, and can be set according to actual needs. In some embodiments, the emergency service can be 110, 120, etc.

[0073] The network mentioned in the embodiments of the present application may refer to a communication network or a cellular network. In addition, the network access method mentioned in the embodiments of the present application may refer to a method for a UE to establish a communication connection with an access network device (such as a base station). Alternatively, the network access method may refer to a method for a UE to access a mobile communication network. Taking 5G as an example, the network access method may refer to a method for a UE to access a 5G network.

[0074] The network access method may include, for example, one or more of the following: a first network access method based on direct access to the network via an air interface (such as a Uu interface), and a second network access method based on a relay UE accessing the network.

[0075] The first network access mode refers to the UE directly establishing a communication connection with the access network device through the air interface, thereby accessing the communication network. In some embodiments, the first network access mode can also be called a direct connection mode.

[0076] The second network access mode refers to the UE indirectly establishing a communication connection with the access network device through a relay UE, thereby accessing the communication network. In some embodiments, the second network access mode may also be referred to as a relay mode.

[0077] In some embodiments, the network access method corresponding to the emergency service of the first UE mentioned above may include one or more of the following: the preferred network access method for the emergency service of the first UE; the preferred network access method for the emergency service of the first UE; the alternative network access method for the emergency service of the first UE; and the optional network access method for the emergency service of the first UE.

[0078] In some embodiments, the first information may be used to indicate that the network access method (or preferred network access method) of the first UE is the first network access method. In other words, the first information instructs the first UE to access the network based on the first network access method (or preferred selection based on the first network access method) and handle the emergency service when emergency service is required.

[0079] In some embodiments, if the network access method (or preferred network access method) for the emergency service is the first network access method, and there is a target network (i.e., a network that supports processing emergency services based on the first network access method, the so-called "existence of a target network" means that the target network can be used by the first UE, for example, the first UE is within the coverage of the target network), then the first UE processes the emergency service based on (or must based on) the first network access method. For example, regulatory agencies in some regions may require that when a target network exists, the UE needs to initiate an emergency service through the first network access method. In the face of this situation, the first information can be used to instruct the first UE to use the first network access method as the preferred network access method when initiating an emergency service, so that the use of emergency services needs to comply with local (national or regional) regulatory requirements.

[0080] In some embodiments, if the network access mode (or preferred network access mode) for the emergency service is the first network access mode and there is no target network, the first UE may process the emergency service based on the second network access mode.

[0081] In some embodiments, if the network access mode (or preferred network access mode) for the emergency service is the first network access mode and there is no target network, the first UE may not be allowed to process the emergency service.

[0082] In some embodiments, the first information may be used to indicate that the network access method (or preferred network access method) of the first UE is the second network access method. In other words, the first information instructs the first UE to access the network based on the second network access method (or preferred selection based on the second network access method) and handle the emergency service when emergency service is required.

[0083] In some embodiments, if the network access method (or preferred network access method) for the emergency service is the second network access method, and there is a target network (i.e., a network that supports processing emergency services based on the second network access method, the so-called "existence of a target network" means that the target network can be used by the first UE, for example, the first UE is within the coverage of the target network), then the first UE processes the emergency service based on (or must be based on) the second network access method.

[0084] In some embodiments, if the network access mode (or preferred network access mode) for the emergency service is the second network access mode and there is no target network, the first UE may process the emergency service based on the first network access mode.

[0085] In some embodiments, if the network access mode (or preferred network access mode) for the emergency service is the second network access mode and there is no target network, the first UE may not be allowed to process the emergency service.

[0086] In some embodiments, the first information may be used to indicate that the network access method of the first UE is a third network access method. The third network access method may be no preference for the network access method of the first UE. It should be noted that there may be multiple ways for the first information to indicate "no preference for the network access method of the first UE". For example, the first information may directly indicate "no preference". For another example, the first information may be "empty", thereby indirectly indicating that there is no preference for the network access method of the first UE. For another example, the first information may indicate that the first UE selects between the first network access method and the second network access method, which may also represent no preference for the network access method of the first UE.

[0087] In some embodiments, if the network access mode for the emergency service is the third network access mode, the first UE may process the emergency service based on the first network access mode or the second network access mode. As an example, the first UE may randomly select a network access mode based on the surrounding network conditions, or the first UE may select a network access mode based on its own pre-configured network access mode selection policy in combination with the surrounding network conditions.

[0088] The above text describes in detail the content and indication method of the first information. The following text describes in detail the configuration and / or carrying method of the first information in conjunction with specific embodiments.

[0089] Example 1: The first information is configured by the policy control network element in the core network

[0090] In embodiment 1, the first information is configured by a policy control element in the core network. For example, the policy control element may configure a UE policy (UE policy) including the first information for the first UE. After the configuration is completed, the policy control element may send the UE policy to the first UE via other core network elements.

[0091] 8 , the configuration method of the first information is described in detail by taking the policy control network element as the PCF in 5G as an example.

[0092] Referring to Figure 8, in step S810, the PCF sends a Namf_Communication_N1N2MessageTransfer message to the AMF. The message includes a UE policy. The UE policy carries the first information. The first information can indicate the preferred network access method for emergency services to the first UE. The preferred network access method may, for example, include the first network access method (i.e., direct access to the network based on the air interface) or no preference. If the first information indicates that the preferred network access method of the first UE is the first network access method, then when there is a target network that supports initiating emergency services in the first network access method, the first UE must select the first network access method as the network access method for the first UE's emergency services.

[0093] In step S820, the AMF delivers the UE policy (delivery of UE policies) to the first UE.

[0094] In step S830, the first UE sends the result of delivery of UE policies to the AMF.

[0095] In step S840, the AMF sends a Namf_Communication_N1MessageNotify message to the PCF to feedback the delivery result of the UE policy.

[0096] The first UE (the first UE plays the role of a remote UE in the relay network) can determine whether there is a network that supports initiating emergency services in the second access mode (i.e., accessing the network through the relay UE) based on the relay service code of the emergency service in the U2N relay discovery notification message (model A) or the U2N relay discovery response (model B). In addition, the first UE can determine whether there is a network that supports initiating emergency services in the first network access mode (i.e., direct access to the network based on the air interface) based on the SIB message of the air interface.

[0097] If the preferred network access mode for emergency services configured by the PCF for the first UE is the first network access mode, then when the first UE needs to initiate an emergency service, if there is a network that supports initiating emergency services using the first network access mode, the first UE must select the first network access mode as the network access mode for the first UE's emergency services. If the target network does not exist, the first UE may select the second network access mode as the network access mode for the first UE's emergency services.

[0098] If the preferred network access method for emergency services configured by the PCF for the first UE is no preference for the network access method, or the PCF does not configure the preferred network access method for emergency services, the first UE can select the first network access method or the second network access method as the network access method when the first UE initiates emergency services.

[0099] Example 2: The first information is configured by the mobility management network element in the core network

[0100] In embodiment 2, the first information is configured by a mobility management network element in the core network. For example, the mobility management network element may configure the first information during the registration process of the first UE. For example, the mobility management network element may carry the first information in a registration acceptance message of the first UE.

[0101] In the following, in conjunction with Figure 9, taking the mobility management network element as AMF in 5G as an example, the configuration method of the first information is explained in detail.

[0102] Referring to Figure 9, in step S910, the first UE sends a registration request message to the AMF. The message may carry one or more of the following parameters: 5G globally unique temporary identifier (5G-GUTI), security capabilities of the first UE, and requested NSSAI.

[0103] In step S920, the AMF sends a registration accept message to the first UE. The registration accept message may carry a new 5G-GUTI and the first information. The first information may indicate to the first UE the preferred network access method for emergency services. The preferred network access method may, for example, include the first network access method (i.e., direct access to the network based on the air interface) or no preference. If the first information indicates that the preferred network access method of the first UE is the first network access method, then when there is a target network that supports initiating emergency services in the first network access method, the first UE must select the first network access method as the network access method for the first UE's emergency services.

[0104] In step S930, the first UE sends a registration complete message to the AMF. The registration complete message can be used to confirm that the new 5G-GUTI is effective.

[0105] The first UE (the first UE plays the role of a remote UE in the relay network) can determine whether there is a network that supports initiating emergency services in the second access mode (i.e., accessing the network through the relay UE) based on the relay service code of the emergency service in the U2N relay discovery notification message (model A) or the U2N relay discovery response (model B). In addition, the first UE can determine whether there is a network that supports initiating emergency services in the first network access mode (i.e., direct access to the network based on the air interface) based on the SIB message of the air interface.

[0106] If the preferred network access mode for emergency services configured by the AMF for the first UE is the first network access mode, then when the first UE needs to initiate an emergency service, if there is a network that supports initiating emergency services using the first network access mode, the first UE must select the first network access mode as the network access mode for the first UE's emergency services. If the target network does not exist, the first UE may select the second network access mode as the network access mode for the first UE's emergency services.

[0107] If the preferred network access method for emergency services configured by the AMF for the first UE is no preference for the network access method, or the AMF does not configure the preferred network access method for emergency services, the first UE can select the first network access method or the second network access method as the network access method when the first UE initiates emergency services.

[0108] Example 3: The first information is configured by the access network device

[0109] In embodiment 3, the first information is configured by an access network device. For example, the access network device may configure the first information for the first UE via a broadcast message or dedicated signaling. The broadcast message may be, for example, a SIB message or a MIB message. The dedicated signaling may be, for example, an RRC release message or an RRC reconfiguration message.

[0110] In the following, with reference to FIG10 , the configuration method of the first information is described in detail by taking the access network device as a gNB in ​​5G as an example.

[0111] Referring to Figure 10, in step S1010, the gNB sends a broadcast message or dedicated signaling to the first UE. The broadcast message or dedicated signaling may carry first information. The first information may indicate to the first UE a preferred network access method for emergency services. The preferred network access method may, for example, include the first network access method (i.e., direct network access over the air interface) or no preference. If the first information indicates that the first UE's preferred network access method is the first network access method, then when there is a target network that supports initiating emergency services using the first network access method, the first UE must select the first network access method as the network access method for the first UE's emergency services.

[0112] The first UE (the first UE plays the role of a remote UE in the relay network) can determine whether there is a network that supports initiating emergency services in the second access mode (i.e., accessing the network through the relay UE) based on the relay service code of the emergency service in the U2N relay discovery notification message (model A) or the U2N relay discovery response (model B). In addition, the first UE can determine whether there is a network that supports initiating emergency services in the first network access mode (i.e., direct access to the network based on the air interface) based on the SIB message of the air interface.

[0113] If the gNB configures the first UE as the preferred network access mode for emergency services, when the first UE needs to initiate emergency services, if there is a network that supports initiating emergency services using the first network access mode, the first UE must select the first network access mode as the network access mode for the first UE's emergency services. If there is no such target network, the first UE may select the second network access mode as the network access mode for the first UE's emergency services.

[0114] If the preferred network access mode for emergency services configured by the gNB for the first UE is no preference for the network access mode, or the gNB does not configure the preferred network access mode for emergency services, the first UE may select the first network access mode or the second network access mode as the network access mode when the first UE initiates the emergency service.

[0115] Embodiment 4: The first information is configured by the relay UE

[0116] In embodiment 4, the first information is configured by the relay UE. For example, the first information can be transmitted by the relay UE to the first UE (remote UE) through a discovery message. The discovery message can also be called a D2D discovery message (device-to-device discovery message) and can be used for a UE to discover other UEs (for example, the first UE) other than the UE. Referring to Figures 5 and 6, the first information can be carried in a U2N relay discovery notification message (model A) or a U2N relay discovery response (model B). The first information can indicate the preferred network access method for emergency services to the first UE. The preferred network access method may, for example, include the first network access method (i.e., direct access to the network based on the air interface) or no preference. If the first information indicates that the preferred network access method of the first UE is the first network access method, then when there is a target network that supports initiating emergency services in the first network access method, the first UE must select the first network access method as the network access method for the first UE's emergency services.

[0117] In some embodiments, the relay UE may obtain the network access method (or preferred network access method) of the first UE based on the methods described in Embodiments 1 to 3.

[0118] The first UE may determine whether there is a network that supports initiating emergency services in the second access mode (i.e., accessing the network through the relay UE) based on the relay service code of the emergency service in the U2N relay discovery notification message (model A) or the U2N relay discovery response (model B). In addition, the first UE may determine whether there is a network that supports initiating emergency services in the first network access mode (i.e., direct access to the network based on the air interface) based on the SIB message of the air interface.

[0119] If the gNB configures the first UE as the preferred network access mode for emergency services, when the first UE needs to initiate emergency services, if there is a network that supports initiating emergency services using the first network access mode, the first UE must select the first network access mode as the network access mode for the first UE's emergency services. If there is no such target network, the first UE may select the second network access mode as the network access mode for the first UE's emergency services.

[0120] If the preferred network access mode for emergency services configured by the gNB for the first UE is no preference for the network access mode, or the gNB does not configure the preferred network access mode for emergency services, the first UE may select the first network access mode or the second network access mode as the network access mode when the first UE initiates the emergency service.

[0121] The method embodiment of the present application is described in detail above in conjunction with Figures 1 to 10. The device embodiment of the present application is described in detail below in conjunction with Figures 11 to 13. It should be understood that the description of the method embodiment corresponds to the description of the device embodiment. Therefore, for parts not described in detail, reference can be made to the above method embodiment.

[0122] Figure 11 is a schematic diagram of the structure of a communication device provided by one embodiment of the present application. The communication device 1100 shown in Figure 11 may be the first UE mentioned above. The communication device 1100 may include a communication module 1110. The communication module 1110 may be configured to receive first information indicating a network access method corresponding to an emergency service of the first UE.

[0123] Optionally, in some embodiments, the network access method corresponding to the emergency service includes a preferred network access method corresponding to the emergency service.

[0124] Optionally, in some embodiments, the first information is used to indicate one of the following: a first network access method based on direct access to the network through an air interface; a second network access method based on relay UE access to the network; or a third network access method with no preference for the network access method.

[0125] Optionally, in some embodiments, the communication device 1100 further includes a processing module, which is used to process the emergency service based on the first network access method if the network access method of the emergency service is the first network access method and there is a target network; or, if the network access method of the emergency service is the first network access method and there is no target network, process the emergency service based on the second network access method; wherein, the target network is a network that supports processing the emergency service based on the first network access method.

[0126] Optionally, in some embodiments, if the network access mode of the emergency service is the third network access mode, the first UE processes the emergency service based on the first network access mode or the second network access mode.

[0127] Optionally, in some embodiments, the network access mode of the emergency service is configured by one of the following: a policy control network element in the core network, a mobility management network element in the core network, an access network device, or a relay UE.

[0128] Optionally, in some embodiments, the first information is carried by one of the following: UE policy sent by the policy control network element of the core network; registration acceptance message sent by the mobility management network element of the core network; broadcast message or proprietary signaling sent by the access network device; discovery message sent by the relay UE.

[0129] Figure 12 is a schematic diagram of the structure of a communication device provided in another embodiment of the present application. The communication device 1200 shown in Figure 12 may be the first communication device mentioned above. The communication device 1200 may include a communication module 1210. The communication module 1210 may be configured to send first information to a first UE; wherein the first information is configured to indicate a network access method corresponding to an emergency service of the first UE.

[0130] Optionally, in some embodiments, the network access method corresponding to the emergency service includes a preferred network access method corresponding to the emergency service.

[0131] Optionally, in some embodiments, the first information is used to indicate one of the following: a first network access method based on direct access to the network through an air interface; a second network access method based on relay UE access to the network; or a third network access method with no preference for the network access method.

[0132] Optionally, in some embodiments, the network access mode of the emergency service is configured by one of the following: a policy control network element in the core network, a mobility management network element in the core network, and an access network device.

[0133] Optionally, in some embodiments, the first information is carried by one of the following: UE policy sent by the policy control network element of the core network; registration acceptance message sent by the mobility management network element of the core network; broadcast message or proprietary signaling sent by the access network device; discovery message sent by the relay UE.

[0134] Optionally, in some embodiments, the first communication device is one of the following: an access network device; a mobility management network element of a core network; a policy control network element of a core network; or a relay UE.

[0135] Figure 13 is a schematic structural diagram of an apparatus according to an embodiment of the present application. The dashed lines in Figure 13 indicate that the unit or module is optional. Apparatus 1300 may be used to implement the method described in the above method embodiment. Apparatus 1300 may be a chip or a communication device. For example, the communication device may be the first UE or the first communication device mentioned above.

[0136] The device 1300 may include one or more processors 1310. The processor 1310 may support the device 1300 to implement the method described in the method embodiment above. The processor 1310 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 1310 may also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0137] The apparatus 1300 may further include one or more memories 1320. The memories 1320 store programs that can be executed by the processor 1310, causing the processor 1310 to perform the methods described in the above method embodiments. The memories 1320 may be independent of the processor 1310 or integrated into the processor 1310.

[0138] The apparatus 1300 may further include a transceiver 1330. The processor 1310 may communicate with other devices or chips via the transceiver 1330. For example, the processor 1310 may transmit and receive data with other devices or chips via the transceiver 1330.

[0139] In some embodiments, the apparatus 1300 may be located in the communication device 1100 in Figure 11. The communication module 1110 in the communication device 1100 may correspond to the transceiver in the apparatus 1300. Alternatively, the functions of the communication module 1110 may be implemented by the transceiver 1330 in the apparatus 1300 under the control of the processor 1310.

[0140] In some embodiments, the apparatus 1300 may be located in the communication device 1200 in Figure 12. The communication module 1210 in the communication device 1200 may correspond to the transceiver in the apparatus 1300. Alternatively, the functions of the communication module 1210 may be implemented by the transceiver 1330 in the apparatus 1300 under the control of the processor 1310.

[0141] The present invention also provides a computer-readable storage medium for storing a program. The computer-readable storage medium can be applied to the communication device provided in the present invention, and the program enables a computer to execute the method performed by the communication device in each embodiment of the present invention.

[0142] The present application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to the communication device provided in the present application, and the program causes a computer to execute the method performed by the communication device in each embodiment of the present application.

[0143] The embodiments of the present application also provide a computer program. The computer program can be applied to the terminal device 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 communication device in each embodiment of the present application.

[0144] It should be understood that the "indication" mentioned in the embodiments of this application can be a direct indication, an indirect indication, or an indication of an association. For example, "A indicates B" can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association between A and B.

[0145] In the description of 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 being indicated, configuration and being configured, etc.

[0146] The “configuration” in the embodiment of the present application may include configuration through at least one of system messages, radio resource control (RRC) signaling and media access control element (MAC CE).

[0147] In some embodiments of the present application, "predefined" or "preset" 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 or a network device). This application does not limit the specific implementation method. For example, predefined may refer to information defined in a protocol.

[0148] In some embodiments of the present application, the "protocol" may refer to a standard protocol in the field of communications, for example, it may include an LTE protocol, an NR protocol, and related protocols used in future communication systems, and this application does not limit this.

[0149] It should be understood that the term "and / or" in this document simply describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0150] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0151] 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.

[0152] 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.

[0153] 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.

[0154] 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)).

[0155] 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 first user equipment UE receives the first information; The first information is used to indicate a network access method corresponding to the emergency service of the first UE.

2. The method according to claim 1, characterized in that The network access mode corresponding to the emergency service includes a preferred network access mode corresponding to the emergency service.

3. The method according to claim 1 or 2, characterized in that The first information is used to indicate one of the following: A first network access method based on direct access to the network via an air interface; A second network access method based on relaying UE to access the network; A third network access method with no preference for the network access method.

4. The method according to claim 3, characterized in that The method further comprises: If the network access mode of the emergency service is the first network access mode and a target network exists, the first UE processes the emergency service based on the first network access mode; or If the network access mode of the emergency service is the first network access mode and there is no target network, the first UE processes the emergency service based on the second network access mode; The target network is a network that supports processing the emergency service based on the first network access method.

5. The method according to claim 3, wherein: If the network access mode of the emergency service is the third network access mode, the first UE processes the emergency service based on the first network access mode or the second network access mode.

6. The method according to any one of claims 1 to 5, characterized in that The network access mode of the emergency service is configured by one of the following: a policy control network element in the core network, a mobility management network element in the core network, an access network device, and a relay UE.

7. The method according to any one of claims 1 to 6, characterized in that The first information is carried in one of the following: UE policy sent by the core network's policy control element; A registration acceptance message sent by the mobility management network element of the core network; Broadcast messages or proprietary signaling sent by access network equipment; Relay discovery messages sent by UE.

8. A wireless communication method, characterized in that: include: The first communication device sends first information to the first user equipment UE; The first information is used to indicate a network access method corresponding to the emergency service of the first UE.

9. The method according to claim 8, characterized in that The network access mode corresponding to the emergency service includes a preferred network access mode corresponding to the emergency service.

10. The method according to claim 8 or 9, characterized in that The first information is used to indicate one of the following: A first network access method based on direct access to the network via an air interface; A second network access method based on relaying UE to access the network; A third network access method with no preference for the network access method.

11. The method according to any one of claims 8 to 10, characterized in that The network access mode of the emergency service is configured by one of the following: a policy control network element in the core network, a mobility management network element in the core network, and an access network device.

12. The method according to any one of claims 8 to 11, characterized in that The first information is carried in one of the following: UE policy sent by the core network's policy control element; A registration acceptance message sent by the mobility management network element of the core network; Broadcast messages or proprietary signaling sent by access network equipment; Relay discovery messages sent by UE.

13. The method according to any one of claims 8 to 12, characterized in that The first communication device is one of the following: Access network equipment; Mobility management network element of the core network; Policy control network element of the core network; Relay UE.

14. A communication device, characterized in that: The communication device is a first user equipment UE, and the first UE includes: A communication module, configured to receive first information; The first information is used to indicate a network access method corresponding to the emergency service of the first UE.

15. The communication device according to claim 14, wherein: The network access mode corresponding to the emergency service includes a preferred network access mode corresponding to the emergency service.

16. The communication device according to claim 14 or 15, characterized in that The first information is used to indicate one of the following: A first network access method based on direct access to the network via an air interface; A second network access method based on relaying UE to access the network; A third network access method with no preference for the network access method.

17. The communication device according to claim 16, wherein: The communication device further includes: a processing module configured to process the emergency service based on the first network access mode if the network access mode of the emergency service is the first network access mode and there is a target network; or If the network access mode of the emergency service is the first network access mode and there is no target network, processing the emergency service based on the second network access mode; The target network is a network that supports processing the emergency service based on the first network access method.

18. The communication device according to claim 16, wherein: If the network access mode of the emergency service is the third network access mode, the first UE processes the emergency service based on the first network access mode or the second network access mode.

19. The communication device according to any one of claims 14 to 18, characterized in that: The network access mode of the emergency service is configured by one of the following: a policy control network element in the core network, a mobility management network element in the core network, an access network device, and a relay UE.

20. The communication device according to any one of claims 14 to 19, characterized in that: The first information is carried in one of the following: UE policy sent by the core network's policy control element; A registration acceptance message sent by the mobility management network element of the core network; Broadcast messages or proprietary signaling sent by access network equipment; Relay discovery messages sent by UE.

21. A communication device, characterized in that: The communication device is a first communication device, and the first communication device includes: A communication module, configured to send first information to a first user equipment UE; The first information is used to indicate a network access method corresponding to the emergency service of the first UE.

22. The communication device according to claim 21, wherein: The network access mode corresponding to the emergency service includes a preferred network access mode corresponding to the emergency service.

23. The communication device according to claim 21 or 22, characterized in that The first information is used to indicate one of the following: A first network access method based on direct access to the network via an air interface; A second network access method based on relaying UE to access the network; A third network access method with no preference for the network access method.

24. The communication device according to any one of claims 21 to 23, characterized in that: The network access mode of the emergency service is configured by one of the following: a policy control network element in the core network, a mobility management network element in the core network, and an access network device.

25. The communication device according to any one of claims 21 to 24, characterized in that: The first information is carried in one of the following: UE policy sent by the core network's policy control element; A registration acceptance message sent by the mobility management network element of the core network; Broadcast messages or proprietary signaling sent by access network equipment; Relay discovery messages sent by UE.

26. The communication device according to any one of claims 21 to 25, characterized in that: The first communication device is one of the following: Access network equipment; Mobility management network element of the core network; Policy control network element of the core network; Relay UE.

27. A communication device, characterized in that: The communication device comprises a transceiver, a memory and a processor, wherein the memory is used to store a program, and the processor is used to call the program in the memory and control the transceiver to receive or send information, so that the communication device executes the method according to any one of claims 1 to 7, or the communication device executes the method according to any one of claims 8 to 13.

28. A device, characterized in that The device comprises a transceiver and a processor, wherein the processor is used to call a program from a memory and control the transceiver to receive or send information, so that the device executes the method according to any one of claims 1 to 7, or the device executes the method according to any one of claims 8 to 13.

29. A chip, characterized in that: The device comprises a processor configured to call a program from a memory, so that a device equipped with the chip executes a method according to any one of claims 1 to 7, or executes a method according to any one of claims 8 to 13.

30. 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 7, or causing a computer to execute the method according to any one of claims 8 to 13.

31. A computer program product, characterized in that The method comprises a program, wherein the program causes a computer to execute the method according to any one of claims 1 to 7, or causes a computer to execute the method according to any one of claims 8 to 13.

32. A computer program, characterized in that The computer program enables a computer to execute the method according to any one of claims 1 to 7, or enables a computer to execute the method according to any one of claims 8 to 13.

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