WO2022021067A1

WO2022021067A1 - Access control method and terminal

Info

Publication number: WO2022021067A1
Application number: PCT/CN2020/105191
Authority: WO
Inventors: 杨皓睿
Original assignee: Oppo广东移动通信有限公司
Priority date: 2020-07-28
Filing date: 2020-07-28
Publication date: 2022-02-03
Also published as: CN117280725A

Abstract

The present application relates to an access control method and a terminal. The access control method comprises: a relay terminal acquiring an access type AC that corresponds to a service relayed for a remote terminal; and the relay terminal performing an access control check according to the AC and unified access control (UAC) parameters. In the embodiments of the present application, by means of a relay terminal, unified access control can be performed on a service that a remote terminal needs to relay.

Description

Access control method and terminal

technical field

The present application relates to the field of communications, and more particularly, to an access control method and terminal.

Background technique

With the continuous development of 5th-Generation (5G) applications, the Network Controlled Interactive Services (NCIS) business has been introduced into the standard as a new business form for related standardized services.

NCIS services are mainly aimed at applications such as Augmented Reality (AR), Virtual Reality (VR), and games, and have high requirements for service quality such as rate, delay, packet loss rate, and high-speed codec. For example: for VR games, the rate needs to be 10Gbps, and the packet loss rate cannot exceed 10E-4 (10 to the power of -4). A session established for an NCIS service is an NCIS session, and user equipment (User Equipment, UE) in the same NCIS session can be considered to form an NCIS group, for example, a team in a game.

The communication of remote UE is served through UE-to-network relay to provide higher-speed, more reliable services, and to expand coverage. For example, a remote UE that is not in coverage can obtain service by relaying the UE. How to perform unified access control on the services that the remote UE needs to relay through the relay UE needs to be solved urgently.

SUMMARY OF THE INVENTION

The embodiments of the present application provide an access control method and terminal, which can perform unified access control on services that need to be relayed by a remote terminal through a relay terminal.

An embodiment of the present application provides an access control method, including:

The relay terminal acquires the access type AC corresponding to the service relayed for the remote terminal;

The relay terminal performs an access control check according to the AC and the unified access control UAC parameter.

The remote terminal sends the access type AC corresponding to the service relayed for the remote terminal to the relay terminal, so that the relay terminal performs an access control check according to the AC and the unified access control UAC parameter.

An embodiment of the present application provides a terminal, including:

an acquisition module, configured to acquire the access type AC corresponding to the service relayed for the remote terminal;

The checking module is used for checking the access control according to the AC and the unified access control UAC parameter.

An embodiment of the present application provides a terminal, including:

The sending module is configured to send the access type AC corresponding to the service relayed for the remote terminal to the relay terminal, so that the relay terminal performs access control check according to the AC and the unified access control UAC parameter.

An embodiment of the present application provides a terminal, including a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory, so that the terminal executes the access control method executed by the relay terminal.

An embodiment of the present application provides a terminal, including a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory, so that the terminal executes the access control method performed by the remote terminal.

An embodiment of the present application provides a chip for implementing the foregoing access control method.

Specifically, the chip includes: a processor for invoking and running a computer program from the memory, so that the device on which the chip is installed executes the access control method executed by the relay terminal.

Specifically, the chip includes: a processor for invoking and running a computer program from the memory, so that the device on which the chip is installed executes the access control method performed by the remote terminal.

Embodiments of the present application provide a computer-readable storage medium for storing a computer program, which, when the computer program is run by a device, causes the device to execute an access control method executed by a relay terminal.

Embodiments of the present application provide a computer-readable storage medium for storing a computer program, which, when the computer program is run by a device, enables the device to execute an access control method performed by a remote terminal.

An embodiment of the present application provides a computer program product, including computer program instructions, the computer program instructions enable a computer to execute an access control method executed by a relay terminal.

Embodiments of the present application provide a computer program product, including computer program instructions, the computer program instructions enable a computer to execute an access control method executed by a remote terminal.

The embodiments of the present application provide a computer program, which, when running on a computer, enables the computer to execute an access control method executed by a relay terminal.

The embodiments of the present application provide a computer program, which, when running on a computer, enables the computer to execute an access control method executed by a remote terminal.

In this embodiment of the present application, the access type corresponding to the service used to relay the remote terminal and the unified access control parameters are obtained through the relay terminal, and the access control check is performed. Unified access control for services.

Description of drawings

FIG. 1 is a schematic diagram of an application scenario according to an embodiment of the present application.

FIG. 2 is a schematic diagram of a system architecture of a ProSe UE-to-Network Relay (ProSe UE-to-Network Relay).

FIG. 3 is a schematic flowchart of an access control method according to an embodiment of the present application.

FIG. 4 is a schematic flowchart of an access control method according to another embodiment of the present application.

FIG. 5 is a flowchart of an example of an access control method according to another embodiment of the present application.

FIG. 6 is a flowchart of another example of an access control method according to another embodiment of the present application.

FIG. 7 is a schematic block diagram of a terminal according to an embodiment of the present application.

FIG. 8 is a schematic block diagram of a terminal according to another embodiment of the present application.

FIG. 9 is a schematic block diagram of a terminal according to another embodiment of the present application.

FIG. 10 is a schematic block diagram of a communication device according to an embodiment of the present application.

FIG. 11 is a schematic block diagram of a chip according to an embodiment of the present application.

FIG. 12 is a schematic block diagram of a communication system according to an embodiment of the present application.

detailed description

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.

The technical solutions of the embodiments of the present application can be applied to various communication systems, for example: a Global System of Mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, a wideband Code Division Multiple Access (CDMA) system (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (General Packet Radio Service, GPRS), Long Term Evolution (Long Term Evolution, LTE) system, Advanced Long Term Evolution (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) unlicensed spectrum, NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.

Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communication, but also support, for example, Device to Device (Device to Device, D2D) communication, Machine to Machine (M2M) communication, Machine Type Communication (MTC), Vehicle to Vehicle (V2V) communication, or Vehicle to everything (V2X) communication, etc. , the embodiments of the present application can also be applied to these communication systems.

Optionally, the communication system in this embodiment of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, a dual connectivity (Dual Connectivity, DC) scenario, or a standalone (Standalone, SA) distribution. web scene.

Optionally, the communication system in the embodiment of the present application may be applied to an unlicensed spectrum, where the unlicensed spectrum may also be considered as a shared spectrum; or, the communication system in the embodiment of the present application may also be applied to a licensed spectrum, where, Licensed spectrum can also be considered unshared spectrum.

The embodiments of the present application describe various embodiments in conjunction with network equipment and terminal equipment, where the terminal equipment may also be referred to as user equipment (User Equipment, UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.

The terminal device can be a station (STAION, ST) in the WLAN, can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a personal digital processing (Personal Digital Assistant, PDA) devices, handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, next-generation communication systems such as end devices in NR networks, or future Terminal equipment in the evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc.

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

In this embodiment of the present application, the terminal device may be a mobile phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, and an augmented reality (Augmented Reality, AR) terminal Equipment, wireless terminal equipment in industrial control, wireless terminal equipment in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid , wireless terminal equipment in transportation safety, wireless terminal equipment in smart city or wireless terminal equipment in smart home, etc.

As an example and not a limitation, in this embodiment of the present application, the terminal device may also be a wearable device. Wearable devices can also be called wearable smart devices, which are the general term for the intelligent design of daily wear and the development of wearable devices using wearable technology, such as glasses, gloves, watches, clothing and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction, and cloud interaction. In a broad sense, wearable smart devices include full-featured, large-scale, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, which needs to cooperate with other devices such as smart phones. Use, such as all kinds of smart bracelets, smart jewelry, etc. for physical sign monitoring.

In this embodiment of the present application, the network device may be a device for communicating with a mobile device, and the network device may be an access point (Access Point, AP) in WLAN, or a base station (Base Transceiver Station, BTS) in GSM or CDMA , it can also be a base station (NodeB, NB) in WCDMA, it can also be an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or in-vehicle equipment, wearable devices and NR networks The network equipment (gNB) in the PLMN network in the future evolution or the network equipment in the NTN network, etc.

As an example and not a limitation, in this embodiment of the present application, the network device may have a mobile feature, for example, the network device may be a mobile device. Optionally, 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. Optionally, the network device may also be a base station set in a location such as land or water.

In this embodiment of the present application, a network device may provide services for a cell, and a terminal device communicates with the network device through transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell, and the cell may be a network device ( For example, the cell corresponding to the base station), the cell can belong to the macro base station, or it can belong to the base station corresponding to the small cell (Small cell). Pico cell), Femto cell (Femto cell), etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

FIG. 1 exemplarily shows a communication system 100 . The communication system includes one network device 110 and two terminal devices 120 . Optionally, the communication system 100 may include multiple network devices 110, and the coverage of each network device 110 may include other numbers of terminal devices 120, which are not limited in this embodiment of the present application.

Optionally, the communication system 100 may further include a mobility management entity (Mobility Management Entity, MME), an access and mobility management function (Access and Mobility Management Function, AMF) and other network entities, to which the embodiments of the present application Not limited.

Wherein, the network equipment may further include access network equipment and core network equipment. That is, the wireless communication system further includes a plurality of core networks for communicating with the access network equipment. The access network equipment may be a long-term evolution (long-term evolution, LTE) system, a next-generation (mobile communication system) (next radio, NR) system, or an authorized auxiliary access long-term evolution (authorized auxiliary access long-term evolution, LAA- The evolved base station (evolutional node B, may be referred to as eNB or e-NodeB for short) in the LTE) system is a macro base station, a micro base station (also called a "small base station"), a pico base station, an access point (AP), Transmission site (transmission point, TP) or new generation base station (new generation Node B, gNodeB), etc.

It should be understood that, in the embodiments of the present application, a device having a communication function in the network/system may be referred to as a communication device. Taking the communication system shown in FIG. 1 as an example, the communication device may include a network device and a terminal device with a communication function, and the network device and the terminal device may be specific devices described in the embodiments of the present invention, which will not be repeated here; The device may also include other devices in the communication system, for example, other network entities such as a network controller and a mobility management entity, which are not limited in this embodiment of the present application.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" in this article is only an association relationship to describe the associated objects, indicating that there can be three kinds of relationships, for example, A and/or B, it can mean that A exists alone, A and B exist at the same time, and A and B exist independently B these three cases. In addition, the character "/" in this document generally indicates that the related objects are an "or" relationship.

It should be understood that the "instruction" mentioned in the embodiments of the present application may be a direct instruction, an indirect instruction, or an associated relationship. For example, if A indicates B, it can indicate that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indicates B indirectly, such as A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.

In the description of the embodiments of the present application, the term "corresponding" may indicate that there is a direct or indirect corresponding relationship between the two, or may indicate that there is an associated relationship between the two, or may indicate and be indicated, configure and be indicated. configuration, etc.

In order to facilitate the understanding of the technical solutions of the embodiments of the present application, the related technologies of the embodiments of the present application are described below. The following related technologies can be arbitrarily combined with the technical solutions of the embodiments of the present application as optional solutions, which all belong to the embodiments of the present application. protected range.

As shown in Figure 2, it is a (Proximity-Services, ProSe) UE-to-network relay (ProSe UE-to-network relay) system architecture in a 4G network. The remote terminal (Remote UE) is connected with the ProSe UE to the network relay (ProSe UE-to-Network Relay) through the PC5 interface, and the relay terminal is connected with the RAN (such as E-UTRA and NR base stations, etc.) through the Uu interface. The non-access stratum (Non-Access Stratum, NAS) accesses the EPC (Evolved Packet Core, evolved packet core network)/5GC (5G core network) through the SGi interface.

For the UE-to-network relay architecture of 5G, there are two possible architectures, L3 (Layer-3, Layer 3) architecture or L2 (Layer-2, Layer 2) architecture.

The main differences between L3 architecture and L2 architecture are as follows:

Under the L3 architecture, the remote (Remote) UE does not need to register with the network, and can only transmit data through a relay (Relay UE), such as a ProSe UE-to-network relay (ProSe UE-to-network relay), similar to Architecture under 4G network.

Under the L2 architecture, the remote UE is similar to the common UE, and the required procedures (eg, registration, session establishment) are all performed. However, data and signaling under the L2 architecture are transmitted to a base station such as an eNB through the relay UE.

In the process of ProSe UE to network relay in EPS (Evolved Packet System, Evolved Packet System), the relay UE can establish a new PDN connection for relay. In order to transmit the relay data of the remote UE, the relay UE needs to use a suitable public data network (Public Data Network, PDN) connection (connection). Which PDN connection to use to transmit relay data is decided by the relay UE. For example, the relay UE may use a dedicated PDN connection to transmit all relay data.

In the L3 architecture under the 5G network, the remote UE will also use a similar method to establish a suitable PDU session (session) for transmitting the data of the remote UE. Exemplarily, the flow of uplink data may include: remote UE->relay UE->RAN->5GC->DNN->application server (Application server). Downward reverse.

In related protocols, when the UE needs to access the network, it needs to perform Unified Access Control (UAC). The NAS layer of the UE can determine the access type (Access Category, AC) according to the service that triggers the access to the network, and the relationship between the service and the AC can be saved as a correspondence table. The correspondence table may include a rule (Rule), a type of access attempt (Type of access attempt), a requirement to be met (Requirements to be met), an access type (Access Category), and the like. For example, if the type of the access attempt corresponds to emergency service (Emergency), AC=2. For another example, if the type of the access attempt corresponds to the access attempt for the delay tolerant service (Access attempt for delay tolerant service), then AC=1. The type of access attempt corresponds to MO IMS registration related signaling (MO IMS registration related signaling), then AC=9. For another example, if the type of the access attempt corresponds to the MO MMTel voice call (MO MMTel voice call), then AC=4. For another example, if the type of the access attempt corresponds to a MO MMTel voice call (MO MMTel video call), then AC=5. Another example is that the type of the access attempt corresponds to a NAS short message or an IP short message (MO SMS over NAS or MO SMSoIP), then AC=6. The above-mentioned specific AC is only an example, not a limitation. Specifically, the above-mentioned corresponding relationship table may be set according to the requirements of the actual application scenario. In addition, the correspondence table may be stored in the relay terminal and the remote terminal.

After the NAS layer determines the AC, it determines the RRC establishment cause (establishment cause) according to the AC, and sends the AC and the RRC establishment cause to the RRC layer. The AC and RRC establishment reasons can be sent to the RRC layer together or separately. The RRC layer judges whether access is possible through the parameters corresponding to the AC broadcast in the system information. Each AC corresponds to a critical value, and the RRC layer can determine a random number between 0 and 1. If the random number is less than the critical value, it indicates that access is possible; if it is greater than the critical value, it indicates that the access is rejected, and a timer such as T390 is calculated. The timer is bound to the AC, and the access control of the AC fails before it expires, or the access control is prohibited. After the RRC layer judges, it notifies the NAS layer of the result.

There may be various occasions when the UE needs to perform UAC, for example: the UE enters the connected state from the idle (Idle) state; or, in the connected state, the UAC is performed for a specific service, and the corresponding AC needs to be found for all services in the idle state. For example, in the connected state, UAC only needs to be performed for the following services:

-IMS related services (related services);

-SMS on NAS (SMS over NAS);

- PDU session establishment (session establishment);

- PDU session modification (session modification);

- Re-activate or resume user plane resources of PDU session.

In the 4G network, there is only the L3 architecture, and the remote UE does not need to perform access control because it does not need to directly access the network. Because the data of the remote UE is relayed and transmitted by the relay UE, the relay UE uses MO (Mobile Originated, mobile calling party) data (MO_data) for all the services of the remote UE.

Since the access control of the relay UE may be triggered by the relay requirement of the remote UE, the embodiments of the present application may provide a specific access control method to perform UAC for the service of the remote UE.

FIG. 3 is a schematic flowchart of an access control method 200 according to an embodiment of the present application. The method can optionally be applied to the system shown in Figure 1, but is not limited thereto. The method includes at least some of the following.

S210, the relay terminal acquires an access type (Access Category, AC) corresponding to the service relayed for the remote terminal;

S220. The relay terminal performs an access control check according to the AC and a unified access control (Unified Access, ControlUAC) parameter.

In this embodiment of the present application, the correspondence between various services and access types may be preset. If the relay terminal receives the service that needs to be relayed from the remote terminal, the access type corresponding to the service can be determined according to the above-mentioned corresponding relationship. For example, the AC of emergency service is 2, the AC of voice call service is 4, the AC of video call service is 5, etc.

Optionally, in this embodiment of the present application, the relay terminal receives a system message, where the system message includes the UAC parameter. Specifically, the relay terminal receives the system message including the UAC parameter from the network.

Optionally, in this embodiment of the present application, the relay terminal performs an access control check according to the AC and the unified access control UAC parameter, including: the relay terminal acquires the UAC parameter corresponding to the AC, and according to the corresponding UAC parameter of the AC The UAC parameters are checked for access control.

Specifically, after acquiring the AC, the relay terminal can search for the UAC parameter corresponding to the AC from the system message from the network. The UAC parameters may include the threshold value corresponding to the AC (called uac-BarringFactor in the standard) and the uac-BarringTime corresponding to the AC. Then, an access control check is performed using the AC and UAC parameters. For example, the UE determines a random number between 0 and 1. If the random number is smaller than the uac-BarringFactor corresponding to the AC, the access is considered to be allowed, otherwise, the access is considered to be prohibited. If access is forbidden, determine a random number between 0 and 1, for example, calculate the T390 value according to the following publicity:

T390=(0.7+0.6×rand)×uac-BarringTime

Optionally, in this embodiment of the present application, the relay terminal receives data packets from the remote terminal.

Optionally, in this embodiment of the present application, acquiring the AC corresponding to the service for the remote terminal by the relay terminal includes: the relay terminal parses the header of the data packet to acquire the AC.

In one example, if the remote terminal adds the AC to the header of the data packet. After receiving the data packet from the remote terminal, the relay terminal can parse the packet header to obtain the AC.

Optionally, in this embodiment of the present application, acquiring the AC of the remote terminal by the relay terminal includes: the relay terminal uses the data descriptor in its own user equipment routing selection policy (User Equipment Routing Selection Policy, URSP) to the data packet. Matching is performed to obtain the characteristics of the packet data unit PDU session (session) of the data packet; the relay terminal determines the AC according to the characteristics of the PDU session.

In an example, if the relay terminal parses the packet header of the data packet from the remote terminal and cannot obtain the AC, it can use the data descriptor in the URSP or the local configuration to match the data packet to obtain the data packet characteristics of the PDU session. The AC is then determined according to the characteristics of the PDU session.

Optionally, in this embodiment of the present application, the relay terminal determines the AC according to the characteristics of the PDU session, including at least one of the following manners:

Manner 1: In the case that the characteristic of the PDU session corresponds to the emergency service, the AC is the first identifier for identifying the emergency service. For example, if the characteristics of the PDU session correspond to emergency services, AC=2.

Manner 2: In the case that the characteristic of the PDU session corresponds to a normal PDU session, the AC is a second identifier for identifying the normal session. For example, if the characteristics of a PDU session correspond to a common PDU session, such as a session for transmitting Internet data, AC=7.

Mode 3: In the case that the characteristics of the PDU session correspond to Internet Protocol (Internet Protocol, IP) Multimedia Subsystem (IP Multimedia Subsystem, IMS) signaling and/or data, according to the quality of service (QoS) flow of the transmitted data The parameters determine the AC.

Manner 4: In the case that the PDU session is used to transmit IMS signaling and/or data, the AC is determined according to the service code of the QoS flow of the transmitted data.

Optionally, in this embodiment of the present application, in mode 3, the AC is determined according to the parameters of the QoS flow of the transmitted data, including at least one of the following:

According to the parameters of the QoS flow of the transmitted data, when it is determined that the QoS flow is used to transmit IMS signaling, the AC is a third identifier used to identify IMS signaling;

According to the parameters of the QoS flow of the transmitted data, when it is determined that the QoS flow is used to transmit an IMS voice call, the AC is the fourth identifier used to identify the voice call;

According to the parameters of the QoS flow of the transmitted data, when it is determined that the QoS flow is used to transmit the IMS video call, the AC is the fifth identifier used to identify the video call;

According to the parameters of the QoS flow of the transmitted data, when it is determined that the QoS flow is used to transmit the IP short message, the AC is the sixth identifier for identifying the IP short message.

For example, after receiving the data packet, the relay terminal can match the packet filter of the QoS flow to determine a certain QoS flow. According to the parameters of the QoS flow, such as 5QI (5G QoS Indicator, 5G quality of service indicator), rate, bit error rate, delay, etc., determine the type of QoS flow used to transmit signaling or data, and then determine the AC. For example, the QoS flow is used to transmit IMS signaling, eg 5QI=8, then AC=9. For another example, the QoS flow is used to transmit voice calls, for example, 5QI=1, then AC=4. For another example, the QoS flow is used to transmit a video call, for example, if 5QI=5, then AC=5. For another example, if the QoS flow is used to transmit IP short messages, AC=6.

Optionally, in the embodiment of the present application, the method further includes: the relay terminal receives signaling from the remote terminal.

Optionally, in the embodiment of the present application, acquiring the AC corresponding to the service for the remote terminal to be relayed by the relay terminal includes: the relay terminal acquires the AC from the signaling.

Optionally, in this embodiment of the present application, acquiring the AC corresponding to the service used for relaying the remote terminal by the relay terminal further includes: in the case that the AC is not included in the signaling, acquiring a specific AC.

For example, a relay terminal may receive signaling from a remote terminal sent via PC5 signaling radio bearers (SRB). For example, the remote terminal sends signaling to the relay terminal when the service is generated. The signaling may include an AC corresponding to the service relayed for the remote terminal. If the AC is not included in the signaling, a specific AC can be used for subsequent access control checks. The specific AC may be a default value set in the relay terminal, and the specific AC is used in the case that the AC cannot be obtained from the remote terminal.

Optionally, in this embodiment of the present application, the relay terminal performs an access control check according to the AC and the unified access control UAC parameter, including: a proximity services (Proximity-Services, ProSe) layer of the relay terminal or a The access layer (Non-Access Stratum, NAS) layer determines the radio resource control (Radio Resource Control, RRC) establishment cause value according to the AC, and sends the AC and the cause value together or separately to the RRC of the relay terminal layer, or the RRC layer obtains the AC, and determines the RRC establishment reason value; the RRC layer determines whether the remote terminal can access the network through the UAC parameter corresponding to the AC in the system information.

For example, in the relay terminal, after the NAS layer determines the AC, it can determine the RRC establishment cause (establishment cause) according to the AC, and send the AC and the cause (cause) to the RRC layer. The RRC layer judges whether it can access the network through the UAC parameter corresponding to the AC broadcast in the system information. Each AC corresponds to a critical value, and the RRC layer can determine a random number between 0 and 1. If the random number is less than the critical value, it means that the network can be accessed; if the random number is greater than the critical value, it means that the access is rejected.

Optionally, in this embodiment of the present application, the method further includes: in the case of the UAC failure, the relay terminal sends a failure notification to the remote terminal, where the failure notification includes the reason and/or timing of the UAC failure The timer is used to make the remote terminal not transmit the data to the relay terminal before the timer expires.

For example, if the relay terminal uses a data packet from a remote terminal to determine the AC, when sending a failure notification, the failure notification may further include part or all of the content of the data packet. Of course, the failure notification may also not include part or all of the content of the data packet, and only include the reason for the UAC failure and/or the timer. For another example, if the relay terminal uses signaling from the remote terminal to determine the AC, when sending the failure notification, the failure notification may also include the reason for the UAC failure and/or the timer. After the remote terminal receives the reason and the timer, it can start timing, and the remote terminal does not transmit data to the relay terminal until the timer expires. The remote terminal may select other relay terminals or select directly connected network devices such as base stations to perform services.

FIG. 4 is a schematic flowchart of an access control method 300 according to an embodiment of the present application. The method can optionally be applied to the system shown in Figure 1, but is not limited thereto. The method includes at least some of the following.

S310. The remote terminal sends the access type AC corresponding to the service relayed for the remote terminal to the relay terminal, so that the relay terminal performs access control check according to the AC and the unified access control UAC parameter.

Optionally, in this embodiment of the present application, the remote terminal sending the access type AC corresponding to the service relayed for the remote terminal to the relay terminal includes: the remote terminal sends a data packet to the relay terminal, the data The header of the packet includes the AC.

Optionally, in this embodiment of the present application, the remote terminal sending the access type AC of the remote terminal to the relay terminal includes: the remote terminal sending signaling to the relay terminal, where the signaling includes the AC.

For a specific example of the remote terminal execution method 300 in this embodiment, reference may be made to the relevant description of the remote terminal in the foregoing method 200, which is not repeated here for brevity.

The access control method of the present application will be described below with specific examples.

Example 1: an access control method under a layer three (L3relay) architecture, see FIG. 5 .

S11. The relay (Relay) UE receives the system information broadcast by the base station (RAN), and reads the UAC parameter in the system information. The AC adjustment factor (factor) is included in the UAC parameters.

S12. The relay UE receives the data packet of the remote (Remote) UE, such as the PC5 data packet. The remote UE can determine the AC and add it to the data packet header. The format example is as follows:

ACAC	Packet(数据包)Packet

S13. If the AC is added in the packet header, the relay UE uses the AC, and determines the RRC establishment cause value according to the AC.

If the AC is not in the packet header, the relay UE matches the received data packet with its own URSP or the traffic descriptor in the local configuration to determine the characteristics of the PDU session to which the data should correspond. For example, the characteristics of the PDU session may include: data network name (Data Network Name, DNN), single-network slice selection assistance information (Single-Network Slice Selection Assistance Information, S-NSSAI) and the like. Then determine the corresponding AC according to the characteristics of the PDU session. An example of the determination method is as follows:

Mode 1: If the PDU session is used to transmit emergency services, AC=2 is used.

Mode 1: If it is a normal PDU session, AC=7 is used, and if the relay UE is in the connected state, UAC is skipped.

Mode 3: If the PDU session transmits IMS signaling and data, because there are 4 IMS-related ACs, it is necessary to determine different ACs through finer-grained parameters. An example is as follows:

(1) AC is determined by the parameters of the QoS flow of the transmitted data, IMS signaling (AC=9), IMS voice call (AC=4), IMS video call (AC=5), Short Message over IP (SMSoverIP) (AC=6).

(2) Each AC corresponds to a service code, the service code is associated with the QoS flow, and the AC is derived from the service code corresponding to the QoS flow. The correspondence between service codes and QoS flows may be determined by the remote UE, the relay UE, or the network. The corresponding relationship may be stored in the relay UE.

The action of step S13 may be completed at the ProSe layer or the NAS layer of the relay UE.

S14. The relay UE sends a PC5 data packet (data) to the remote UE, carrying the reason for the UAC failure and the timer. If UAC fails, the relay UE can notify the remote UE of the failure of data transmission and the reason. In addition, the relay UE may also send a timer (Timer) to the remote UE, and before the timer expires, the remote UE no longer transmits corresponding data. In this case, the remote UE can select other relay UEs, or select a directly connected base station to perform services.

In this example, the relay UE may perform UAC for services of different remote UEs.

Example 2: an access control method under a layer two (L2relay) architecture, see FIG. 6 .

S21. The relay UE receives the system information broadcast by the base station, and reads the UAC parameter in the system information.

S22. The RRC information of the remote UE can be transmitted to the relay UE by using the PC5 SRB, and the relay UE is then transmitted to the RAN. The PC5 SRB may include AC and RRC messages, and may also include the RRC establishment reason value. Therefore, no matter whether the remote UE is in the connected state or the idle state and enters the connected state, it is necessary to perform UAC according to the relevant protocol and determine the RRC establishment reason value. The remote UE sends the determined AC (optional) and RRC establishment cause value to the relay UE.

S23. If the relay UE receives the AC, it can perform UAC according to the AC, and determine its own RRC establishment reason value. For example, the AC of the remote UE is used to determine the reason for establishing the AC and the RRC; or the reason for establishing the RRC of the remote UE is directly used as its own.

If the relay UE does not receive the AC, use the specific AC and specific RRC establishment cause value for the Relay service, or use MO signaling (MO_Signalling), MO data (MO_data) (by receiving packets from PC5 SRB or PC5 DRB) Sure).

The action of S23 may not be perceived by the NAS layer of the relay UE. For example, the AC and/or RRC establishment reason of the remote terminal is sent to the PDCP (Packet Data Convergence Protocol) layer or the adaptation layer of the relay UE through the PC5 SRB, and then directly transferred to the RRC layer of the relay UE without passing the intermediate Following the NAS layer of the UE.

S24, the relay UE sends PC5 signaling (signalling) to the remote UE, carrying the reason for the UAC failure and the timer. If the UAC fails, the relay UE notifies the remote UE of the failure of data transmission, and informs the reason, and can also send a timer to the remote UE. Before the timer expires, the remote UE will no longer transmit the corresponding data. At this time, the remote UE can select other relay UEs, or select a directly connected base station to perform services.

The access control method in the embodiment of the present application can be applied to all relay services that use PC5 (in Device to Device (Device to Device, D2D) communication) to transmit data.

FIG. 7 is a schematic block diagram of a terminal 400 according to an embodiment of the present application. The terminal 400 may include:

an obtaining module 410, configured to obtain the access type AC corresponding to the service relayed for the remote terminal;

The checking module 420 is configured to perform an access control check according to the AC and the unified access control UAC parameter.

Optionally, in this embodiment of the present application, as shown in FIG. 8 , the terminal further includes:

The first receiving module 430 is configured to receive a system message, where the system message includes the UAC parameter.

Optionally, in this embodiment of the present application, the checking module is further configured to acquire UAC parameters corresponding to the AC, and perform access control check according to the UAC parameters corresponding to the AC.

Optionally, in this embodiment of the present application, the terminal further includes:

The second receiving module 440 is configured to receive data packets from the remote terminal.

Optionally, in this embodiment of the present application, the obtaining module 410 includes:

The parsing submodule 411 is configured to parse the packet header of the data packet to obtain the AC.

Optionally, in this embodiment of the present application, the obtaining module includes:

The matching submodule 412 is used to match the data packet by using the data descriptor in the user equipment routing policy URSP of its own to obtain the characteristics of the packet data unit PDU session of the data packet;

The determining submodule 413 is configured to determine the AC according to the characteristics of the PDU session.

Optionally, in this embodiment of the present application, the determining submodule is configured to determine the AC according to the characteristics of the PDU session, including at least one of the following:

In the case that the characteristic of the PDU session corresponds to the emergency service, the AC is the first identifier used to identify the emergency service;

In the case that the characteristic of the PDU session corresponds to an ordinary PDU session, the AC is a second identifier used to identify the ordinary session;

In the case that the characteristics of the PDU session correspond to Internet Protocol IP Multimedia Subsystem IMS signaling and/or data, determine the AC according to the parameters of the quality of service QoS flow of the transmitted data;

In the case where the PDU session is used to transmit IMS signaling and/or data, the AC is determined according to the service code of the QoS flow of the transmitted data.

Optionally, in this embodiment of the present application, the determining submodule is configured to determine the AC according to parameters of the QoS flow of the transmitted data, including at least one of the following:

The third receiving module 450 is configured to receive signaling from the remote terminal.

Optionally, in this embodiment of the present application, the obtaining module 410 further includes:

The first obtaining sub-module 414 is configured to obtain the AC from the signaling.

Optionally, in this embodiment of the present application, the obtaining module further includes:

The second obtaining sub-module 415 is configured to obtain a specific AC when the AC is not included in the signaling.

Optionally, in this embodiment of the present application, the checking module is further configured to, after the proximity service ProSe layer or the NAS layer determines the radio resource control RRC establishment cause value according to the AC, send the AC and the cause value together or separately. to the RRC layer; and, in the RRC layer, it is judged whether the remote terminal can access the network through the UAC parameter corresponding to the AC in the system information.

A notification module 460, configured to send a failure notification to the remote terminal when the UAC fails, where the failure notification includes the reason for the UAC failure and/or a timer, and the timer is used to make the remote terminal stop at the timer The data is not transmitted to the relay terminal until the time-out expires.

The terminal 400 in this embodiment of the present application can implement the corresponding function of the relay terminal in the foregoing method embodiments. For the corresponding processes, functions, implementations, and beneficial effects of each module (sub-module, unit, or component, etc.) in the terminal 400, reference may be made to the corresponding descriptions in the foregoing method embodiments, which will not be repeated here.

It should be noted that the functions described by each module (submodule, unit or component, etc.) in the terminal 400 of the application embodiment may be implemented by different modules (submodule, unit or component, etc.), or may be implemented by the same module (submodule, unit or component, etc.) implementation.

FIG. 9 is a schematic block diagram of a terminal 500 according to another embodiment of the present application. The terminal 500 may include:

The sending module 510 is configured to send the access type AC corresponding to the service relayed for the remote terminal to the relay terminal, so that the relay terminal performs an access control check according to the AC and the unified access control UAC parameter.

Optionally, in this embodiment of the present application, the sending module is further configured to send a data packet to the relay terminal, where the packet header of the data packet includes the AC.

Optionally, in this embodiment of the present application, the sending module is further configured to send signaling to the relay terminal, where the signaling includes the AC.

The terminal 500 in this embodiment of the present application can implement the corresponding functions of the remote terminal in the foregoing method embodiments. For the corresponding processes, functions, implementations, and beneficial effects of each module (submodule, unit, or component, etc.) in the terminal 500, reference may be made to the corresponding descriptions in the foregoing method embodiments, and details are not repeated here.

It should be noted that the functions described by each module (submodule, unit, or component, etc.) in the terminal 500 of the application embodiment may be implemented by different modules (submodule, unit, or component, etc.), or may be implemented by the same module (submodule, unit or component, etc.) implementation.

FIG. 10 is a schematic structural diagram of a communication device 600 according to an embodiment of the present application. The communication device 600 includes a processor 610, and the processor 610 can call and run a computer program from a memory, so that the communication device 600 implements the methods in the embodiments of the present application.

Optionally, as shown in FIG. 10 , the communication device 600 may further include a memory 620 . The processor 610 may call and run a computer program from the memory 620, so that the communication device 600 implements the methods in the embodiments of the present application.

The memory 620 may be a separate device independent of the processor 610 , or may be integrated in the processor 610 .

Optionally, as shown in FIG. 10 , the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, specifically, may send information or data to other devices, or receive other Information or data sent by a device.

Among them, the transceiver 630 may include a transmitter and a receiver. The transceiver 630 may further include antennas, and the number of the antennas may be one or more.

Optionally, the communication device 600 may be a relay terminal or a remote terminal in the embodiments of the present application, and the communication device 600 may implement the corresponding processes implemented by the relay terminal or the remote terminal in each method in the embodiments of the present application, in order to It is concise and will not be repeated here.

FIG. 11 is a schematic structural diagram of a chip 700 according to an embodiment of the present application. The chip 700 includes a processor 710, and the processor 710 can call and run a computer program from a memory, so as to implement the method in the embodiments of the present application.

Optionally, as shown in FIG. 11 , the chip 700 may further include a memory 720 . The processor 710 may call and run a computer program from the memory 720 to implement the method executed by the relay terminal or the remote terminal in the embodiment of the present application.

The memory 720 may be a separate device independent of the processor 710 , or may be integrated in the processor 710 .

Optionally, the chip 700 may further include an input interface 730 . The processor 710 may control the input interface 730 to communicate with other devices or chips, and specifically, may acquire information or data sent by other devices or chips.

Optionally, the chip 700 may further include an output interface 740 . The processor 710 can control the output interface 740 to communicate with other devices or chips, and specifically, can output information or data to other devices or chips.

Optionally, the chip can be applied to the relay terminal or the remote terminal in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the relay terminal or the remote terminal in each method of the embodiments of the present application. For brevity, It is not repeated here.

The chips applied to the relay terminal or the remote terminal may be the same chip or different chips.

It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip, a system-on-chip, or a system-on-a-chip, or the like.

The above-mentioned processor may be a general-purpose processor, a digital signal processor (DSP), an off-the-shelf programmable gate array (field programmable gate array, FPGA), an application specific integrated circuit (ASIC) or Other programmable logic devices, transistor logic devices, discrete hardware components, etc. The general-purpose processor mentioned above may be a microprocessor or any conventional processor or the like.

The memory mentioned above may be either volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically programmable Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory. Volatile memory may be random access memory (RAM).

It should be understood that the above memory is an example but not a limitative description, for example, the memory in the embodiment of the present application may also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. That is, the memory in the embodiments of the present application is intended to include but not limited to these and any other suitable types of memory.

FIG. 12 is a schematic block diagram of a communication system 800 according to an embodiment of the present application. The communication system 800 includes a relay terminal 810 or a remote terminal 820 .

The relay terminal 810 is configured to acquire the AC corresponding to the service relayed for the remote terminal 820; and perform access control check according to the AC and UAC parameters.

The remote terminal 820 is configured to send, to the relay terminal 810, the AC corresponding to the service relayed by the remote terminal.

The relay terminal 810 may be used to implement the corresponding functions implemented by the relay terminal in the above method, and the remote terminal 820 may be used to implement the corresponding functions implemented by the remote terminal in the above method. For brevity, details are not repeated here.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented in 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, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer instructions may be stored on or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be transmitted over a wire from a website site, computer, server or data center (eg coaxial cable, optical fiber, Digital Subscriber Line (DSL)) or wireless (eg infrared, wireless, microwave, etc.) means to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that includes one or more available media integrated. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (eg, a Solid State Disk (SSD)), and the like.

It should be understood that, in various embodiments of the present application, the size of the sequence numbers of the above-mentioned processes does not mean the sequence of execution, and the execution sequence of each process should be determined by its functions and internal logic, and should not be dealt with in the embodiments of the present application. implementation constitutes any limitation.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art who is familiar with the technical scope disclosed in the present application can easily think of changes or substitutions. Covered within the scope of protection of this application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

An access control method, comprising:

The relay terminal acquires the access type AC corresponding to the service relayed for the remote terminal;

The relay terminal performs an access control check according to the AC and the unified access control UAC parameter.
The method of claim 1, wherein the method further comprises:

The relay terminal receives a system message, where the system message includes the UAC parameter.
The method according to claim 1 or 2, wherein the relay terminal performs an access control check according to the AC and the unified access control UAC parameter, comprising:

The relay terminal acquires the UAC parameter corresponding to the AC, and performs access control check according to the UAC parameter corresponding to the AC.
The method of any one of claims 1 to 3, wherein the method further comprises:

The relay terminal receives data packets from the remote terminal.
The method according to claim 4, wherein acquiring the AC corresponding to the service relayed by the remote terminal for the relay terminal comprises:

The relay terminal parses the header of the data packet to obtain the AC.
The method according to claim 4, wherein obtaining the AC corresponding to the service relayed by the remote terminal for the relay terminal comprises:

The relay terminal uses the data descriptor in its own user equipment routing policy URSP to match the data packet, and obtains the characteristics of the packet data unit PDU session of the data packet;

The relay terminal determines the AC according to the characteristics of the PDU session.
The method according to claim 6, wherein the relay terminal determines the AC according to the characteristics of the PDU session, including at least one of the following:

In the case that the characteristic of the PDU session corresponds to the emergency service, the AC is the first identifier for identifying the emergency service;

In the case that the characteristic of the PDU session corresponds to an ordinary PDU session, the AC is a second identifier for identifying an ordinary session;

In the case that the characteristics of the PDU session correspond to Internet Protocol IP Multimedia Subsystem IMS signaling and/or data, determining the AC according to parameters of the quality of service (QoS) flow of the transmitted data;

In case the PDU session is used to transmit IMS signaling and/or data, the AC is determined according to the service code of the QoS flow of the transmitted data.
The method of claim 7, wherein the AC is determined according to parameters of a QoS flow of the transmitted data, comprising at least one of the following:

According to the parameters of the QoS flow of the transmitted data, when it is determined that the QoS flow is used to transmit IMS signaling, the AC is a third identifier used to identify IMS signaling;

According to the parameters of the QoS flow of the transmitted data, when it is determined that the QoS flow is used to transmit an IMS voice call, the AC is a fourth identifier used to identify the voice call;

According to the parameters of the QoS flow of the transmitted data, when it is determined that the QoS flow is used to transmit an IMS video call, the AC is a fifth identifier used to identify the video call;

When it is determined according to the parameters of the QoS flow of the transmitted data that the QoS flow is used to transmit the IP short message, the AC is a sixth identifier for identifying the IP short message.
The method of any one of claims 1 to 3, wherein the method further comprises:

The relay terminal receives signaling from the remote terminal.
The method according to claim 9, wherein acquiring the AC corresponding to the service relayed by the remote terminal for the relay terminal comprises:

The relay terminal acquires the AC from the signaling.
The method according to claim 9, wherein obtaining the AC corresponding to the service relayed by the remote terminal for the relay terminal further comprises:

In the case where the AC is not included in the signaling, a specific AC is acquired.
The method according to any one of claims 1 to 11, wherein the relay terminal performs an access control check according to the AC and the unified access control UAC parameter, comprising:

The proximity service ProSe layer or the non-access stratum NAS layer of the relay terminal determines the RRC establishment cause value according to the AC, and sends the AC and the cause value to the relay together or separately. The RRC layer of the terminal;

The RRC layer determines whether the remote terminal can access the network through the UAC parameter corresponding to the AC in the system information.
The method of any one of claims 1 to 12, wherein the method further comprises:

In the case of the UAC failure, the relay terminal sends a failure notification to the remote terminal, where the failure notification includes the reason for the UAC failure and/or a timer, and the timer is used to make the remote terminal The terminal does not transmit the data to the relay terminal until the timer expires.
An access control method, comprising:

The remote terminal sends the access type AC corresponding to the service relayed for the remote terminal to the relay terminal, so that the relay terminal performs an access control check according to the AC and the unified access control UAC parameter.
The method according to claim 14, wherein the remote terminal sends the access type AC corresponding to the service relayed by the remote terminal to the relay terminal, comprising:

The remote terminal sends a data packet to the relay terminal, and the packet header of the data packet includes the AC.
The method according to claim 14, wherein the remote terminal sends the access type AC of the remote terminal to the relay terminal, comprising:

The remote terminal sends signaling to the relay terminal, and the signaling includes the AC.
A terminal that includes:

an acquisition module, configured to acquire the access type AC corresponding to the service relayed for the remote terminal;

The checking module is configured to perform an access control check according to the AC and the unified access control UAC parameter.
The terminal of claim 17, wherein the terminal further comprises:

The first receiving module is configured to receive a system message, where the system message includes the UAC parameter.
The terminal according to claim 17 or 18, wherein the checking module is further configured to acquire UAC parameters corresponding to the AC, and perform an access control check according to the UAC parameters corresponding to the AC.
The terminal according to any one of claims 17 to 19, wherein the terminal further comprises:

The second receiving module is used for receiving data packets from the remote terminal.
The terminal according to claim 20, wherein the obtaining module comprises:

A parsing submodule, configured to parse the packet header of the data packet to obtain the AC.
The terminal according to claim 20, wherein the obtaining module comprises:

A matching submodule for matching the data packet with the data descriptor in the user equipment routing policy URSP of its own to obtain the characteristics of the packet data unit PDU session of the data packet;

A determination submodule, configured to determine the AC according to the characteristics of the PDU session.
The terminal according to claim 22, wherein the determining submodule is configured to determine the AC according to the characteristics of the PDU session, including at least one of the following:

In the case that the characteristic of the PDU session corresponds to the emergency service, the AC is the first identifier used to identify the emergency service;

In the case that the characteristic of the PDU session corresponds to an ordinary PDU session, the AC is a second identifier for identifying an ordinary session;

In the case that the characteristics of the PDU session correspond to Internet Protocol IP Multimedia Subsystem IMS signaling and/or data, determining the AC according to parameters of the quality of service (QoS) flow of the transmitted data;

In case the PDU session is used to transmit IMS signaling and/or data, the AC is determined according to the service code of the QoS flow of the transmitted data.
The terminal according to claim 23, wherein the determining submodule is configured to determine the AC according to parameters of the QoS flow of the transmitted data, including at least one of the following:

According to the parameters of the QoS flow of the transmitted data, when it is determined that the QoS flow is used to transmit IMS signaling, the AC is a third identifier used to identify IMS signaling;

According to the parameters of the QoS flow of the transmitted data, when it is determined that the QoS flow is used to transmit an IMS voice call, the AC is a fourth identifier used to identify the voice call;

According to the parameters of the QoS flow of the transmitted data, when it is determined that the QoS flow is used to transmit an IMS video call, the AC is a fifth identifier used to identify the video call;

When it is determined according to the parameters of the QoS flow of the transmitted data that the QoS flow is used to transmit the IP short message, the AC is a sixth identifier for identifying the IP short message.
The terminal according to any one of claims 17 to 19, wherein the terminal further comprises:

The third receiving module is used for receiving signaling from the remote terminal.
The terminal according to claim 25, wherein the obtaining module further comprises:

a first obtaining submodule, configured to obtain the AC from the signaling.
The terminal according to claim 25, wherein the obtaining module further comprises:

The second obtaining submodule is configured to obtain a specific AC when the AC is not included in the signaling.
The terminal according to any one of claims 17 to 27, wherein the checking module is further configured to, after the proximity service ProSe layer or the NAS layer determines a radio resource control RRC establishment cause value according to the AC, check the The AC and the cause value are sent to the RRC layer together or separately; and the RRC layer determines whether the remote terminal can access the network through the UAC parameter corresponding to the AC in the system information.
The terminal according to any one of claims 17 to 28, wherein the terminal further comprises:

a notification module, configured to send a failure notification to the remote terminal when the UAC fails, where the failure notification includes the reason for the UAC failure and/or a timer, and the timer is used to make the remote terminal The terminal does not transmit the data to the relay terminal until the timer expires.
A terminal that includes:

The sending module is configured to send the access type AC corresponding to the service relayed for the remote terminal to the relay terminal, so that the relay terminal performs access control check according to the AC and the unified access control UAC parameter.
The terminal according to claim 30, wherein the sending module is further configured to send a data packet to the relay terminal, and a packet header of the data packet includes the AC.
The terminal according to claim 30, wherein the sending module is further configured to send signaling to the relay terminal, and the signaling includes the AC.
A terminal, comprising: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, so that the terminal executes any one of claims 1 to 13. one of the methods described.
A terminal, comprising: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, so that the terminal executes any one of claims 14 to 16. one of the methods described.
A chip, comprising: a processor for invoking and running a computer program from a memory, so that a device on which the chip is installed executes the method according to any one of claims 1 to 13.
A chip, comprising: a processor for invoking and running a computer program from a memory, so that a device on which the chip is installed executes the method as claimed in any one of claims 14 to 16.
A computer-readable storage medium for storing a computer program which, when executed by an apparatus, causes the apparatus to perform the method of any one of claims 14 to 16.
A computer-readable storage medium for storing a computer program which, when executed by an apparatus, causes the apparatus to perform the method of any one of claims 14 to 16.
A computer program product comprising computer program instructions that cause a computer to perform the method of any one of claims 1 to 13.
A computer program product comprising computer program instructions that cause a computer to perform the method of any of claims 14 to 16.
A computer program that causes a computer to perform the method of any one of claims 1 to 13.
A computer program which causes a computer to perform the method of any one of claims 14 to 16.