KR20210023590A - Method and apparatus for providing proximity-based services in wiereless communication system - Google Patents

Abstract

Disclosed is a method in which a base station allocates a sidelink resource for proximity-based services (ProSe) to a terminal in a wireless communication system. The method comprises the steps of: receiving a terminal context setup request message from an access and mobility management function (AMF); receiving a sidelink resource request message from a terminal; identifying an aggregated maximum bit rate (PC5-AMBR) value corresponding to a ProSe service; and allocating a sidelink resource for the ProSe service to the terminal.

Description

Method and apparatus for providing ProSe (Proximity-based Services) to a terminal in a wireless communication system {METHOD AND APPARATUS FOR PROVIDING PROXIMITY-BASED SERVICES IN WIERELESS COMMUNICATION SYSTEM}

The present disclosure relates to a method and apparatus for providing ProSe (Proximity-based Services) to a terminal in a wireless communication system.

4G (4 ^th generation) to meet the traffic demand in the radio data communication system increases since the commercialization trend, efforts to develop improved 5G (5 ^th generation) communication system, or pre-5G communication system have been made. For this reason, the 5G communication system or the pre-5G communication system is called a Beyond 4G Network communication system or a Long Term Evolution (LTE) system (Post LTE) system.

In order to achieve a high data rate, 5G communication systems are being considered for implementation in an ultra-high frequency (mmWave) band (eg, such as a 60 gigabyte (60 GHz) band). In order to mitigate the path loss of radio waves in the ultra-high frequency band and increase the propagation distance of radio waves, in 5G communication systems, beamforming, massive MIMO, and Full Dimensional MIMO (FD-MIMO) ), array antenna, analog beam-forming, and large scale antenna technologies are being discussed.

In addition, in order to improve the network of the system, in 5G communication systems, an evolved small cell, an advanced small cell, a cloud radio access network (cloud RAN), and an ultra-dense network ), Device to Device communication (D2D), wireless backhaul, moving network, cooperative communication, CoMP (Coordinated Multi-Points), and interference cancellation ), and other technologies are being developed.

In addition, in the 5G system, the advanced coding modulation (Advanced Coding Modulation, ACM) method of FQAM (Hybrid Frequency Shift Keying and Quadrature Amplitude Modulation) and SWSC (Sliding Window Superposition Coding), and advanced access technology, FBMC (Filter Bank Multi Carrier). ), NOMA (Non Orthogonal Multiple Access), and SCMA (Sparse Code Multiple Access) are being developed.

Meanwhile, the Internet is evolving from a human-centered network in which humans create and consume information, to an Internet of Things (IoT) network that exchanges and processes information between distributed components such as objects. IoE (Internet of Everything) technology, which combines IoT technology with big data processing technology through connection with cloud servers, is also emerging. In order to implement IoT, technological elements such as sensing technology, wired/wireless communication and network infrastructure, service interface technology, and security technology are required. , M2M), and MTC (Machine Type Communication) technologies are being studied. In the IoT environment, intelligent IT (Internet Technology) services that create new value in human life by collecting and analyzing data generated from connected objects can be provided. IoT is the field of smart home, smart building, smart city, smart car or connected car, smart grid, healthcare, smart home appliance, advanced medical service, etc. through the convergence and combination of existing IT (information technology) technology and various industries. Can be applied to.

Accordingly, various attempts have been made to apply a 5G communication system to an IoT network. For example, technologies such as sensor network, machine to machine (M2M), and MTC (Machine Type Communication) are implemented by techniques such as beamforming, MIMO, and array antenna. There is. The application of a cloud radio access network (cloud RAN) as the big data processing technology described above can be said as an example of the convergence of 5G technology and IoT technology.

As described above and with the development of a mobile communication system, various services can be provided. In particular, there is a need for a method for providing a method for a terminal to directly communicate with another terminal.

The mobile communication system may provide direct communication between terminals (ProSe, PC5, Sidelink communication or D2D (Device-to-Device)). For direct communication between terminals, a network function (NF) for providing direct communication is defined, and a protocol between a terminal (User Equipment, UE) and NF, and a protocol between an application function (AF) and NF are defined. In addition, the 5G Core Network may be connected to a base station to provide necessary information for direct communication. In addition, the terminal may request radio resources necessary for direct communication from the base station, and the base station may allocate radio resources to the terminal.

In a mobile communication system, a base station allocates radio resources for direct communication between terminals to terminals. The present disclosure proposes a method for efficiently controlling and managing radio resources for direct communication allocated by a base station to a terminal in a mobile communication system.

In addition, in the mobile communication system, the ProSe Function calculates radio resources used by the terminal for direct communication, and collects information on radio resources used by the terminal from the terminal for billing. The present disclosure proposes a method for efficiently collecting and calculating radio resources used by a terminal by a ProSe function in a mobile communication system.

In a wireless communication system according to an embodiment of the present disclosure, a method for allocating sidelink resources for ProSe (Proximity-based Services) to a terminal by a base station is, from an Access and Mobility Management Function (AMF), an application function (AF). Receiving a terminal context setting request message including information on at least one ProSe service provided to the terminal; Receiving, from the terminal, a sidelink resource request message for use of a ProSe service intended to be used by the terminal; Identifying an Aggregated Maximum Bit Rate (PC5-AMBR) value corresponding to the ProSe service based on the information on the at least one ProSe service and the sidelink resource request message; And allocating a sidelink resource for the ProSe service to the terminal based on the identified PC5-AMBR value.

According to an embodiment of the present disclosure, information on the at least one ProSe service is transmitted from a ProSe Function to the AMF through a ProSe service request message, and transmitted to the ProSe Function through a ProSe communication request message from the AF. It may include at least one ProSe service information and at least one ProSe service parameter determined based on the at least one ProSe service information by the ProSe Function.

According to an embodiment of the present disclosure, the at least one ProSe service information is at least one of service identification information, group identification information, radio resource requirement information, or identification information of the terminal for each of the at least one ProSe service. The at least one ProSe service parameter may include at least one PC5-AMBR value each corresponding to the at least one ProSe service.

According to an embodiment of the present disclosure, the receiving of the terminal context setting request message from the AMF is receiving a terminal context setting request message including an updated ProSe service parameter for the at least one ProSe service, and the The updated ProSe service parameter may be updated based on at least one of a mobile communication service provider policy, a state of a network, subscription information of a terminal related to a ProSe communication function, or a request of the AF by the ProSe Function.

According to an embodiment of the present disclosure, the updated ProSe service parameter is a changed value of the PC5-AMBR value corresponding to the ProSe service intended to be used by the terminal or for canceling authentication of the terminal for the ProSe service. It may include at least one of the information.

According to an embodiment of the present disclosure, the method may further include the step of allocating the sidelink resource or rejecting the sidelink resource allocation of the terminal based on the changed PC5-AMBR value.

In a wireless communication system according to an embodiment of the present disclosure, a method of transmitting information on a ProSe service to an Access and Mobility Management Function (AMF) by a ProSe (Proximity-based services) function includes at least one Receiving a ProSe communication request message including information on a ProSe service; Each corresponding to the at least one ProSe service based on at least one of information on the at least one ProSe service, a mobile communication service provider policy, a network state, subscription information of a terminal regarding a ProSe communication function, or the request of the AF. Obtaining at least one ProSe service parameter; And transmitting a ProSe service request message including the at least one ProSe service parameter to the AMF. The at least one ProSe service parameter may include at least one PC5-AMBR (Aggregated Maximum Bit Rate) value respectively corresponding to the at least one ProSe service.

According to an embodiment of the present disclosure, the information on the at least one ProSe service includes at least one of service identification information, group identification information, radio resource requirement information, or identification information of the terminal for each of the at least one ProSe service. It includes one piece of information, and the at least one PC5-AMBR value is based on at least one of information on the at least one ProSe service, a mobile communication service provider policy, a network state, or subscription information of a terminal regarding a ProSe communication function. The determined value may be at least one of a value included in information on the at least one ProSe service received from the AF, or a value received from a Policy Control Function (PCF).

According to an embodiment of the present disclosure, the method further includes generating billing information for the terminal, and generating billing information for the terminal is used to report resource usage information on the terminal. Determining a reporting condition to be performed; Transmitting, to the base station, a report request message including a request for reporting the report condition and resource usage information; Receiving, from the base station, the resource usage information report including information on a sidelink resource related to a ProSe service allocated to the terminal by the base station; And generating billing information on the terminal based on the received resource usage information report.

According to an embodiment of the present disclosure, the reporting condition is a condition for a reporting period, a condition for setting to report the resource usage information of the terminal when the resource usage of the terminal is greater than or equal to a preset threshold, or the terminal It may include at least one condition among conditions set to report the resource usage information of the terminal each time it is used.

A base station for allocating sidelink resources for ProSe (Proximity-based Services) to a terminal in a wireless communication system according to an embodiment of the present disclosure includes: a transceiver; And at least one processor, wherein the at least one processor includes information on at least one ProSe service provided by an application function (AF) to the terminal from an access and mobility management function (AMF). Controls the transmission/reception unit to receive a request message, and controls the transmission/reception unit to receive a sidelink resource request message for use of a ProSe service intended to be used by the terminal from the terminal, and information on the at least one ProSe service And an Aggregated Maximum Bit Rate (PC5-AMBR) value corresponding to the ProSe service based on the sidelink resource request message, and a side for the ProSe service to the terminal based on the identified PC5-AMBR value. Link resources can be allocated.

In a wireless communication system according to an embodiment of the present disclosure, a ProSe (Proximity-based Services) Function for transmitting information on a ProSe service to an Access and Mobility Management Function (AMF) includes: a transceiver; And at least one processor, wherein the at least one processor controls the transceiver to receive a ProSe communication request message including information on at least one ProSe service from an application function (AF), and the at least one At least one ProSe corresponding to each of the at least one ProSe service based on at least one of information on ProSe service, a mobile communication service provider policy, a network state, subscription information of a terminal related to a ProSe communication function, or a request of the AF It is possible to control the transceiver to obtain a service parameter and transmit a ProSe service request message including the at least one ProSe service parameter to the AMF. The at least one ProSe service parameter may include at least one PC5-AMBR (Aggregated Maximum Bit Rate) value respectively corresponding to the at least one ProSe service.

In a wireless communication system according to an embodiment of the present disclosure, a method of controlling a registration procedure of a terminal for a network by an Access and Mobility Management Function (AMF) includes, from a base station, of a terminal for a ProSe (Proximity-based Services) communication function. Receiving a registration request message of a terminal including capability information and network slice information about a ProSe requested by the terminal; Determining whether to permit the use of the ProSe requested by the terminal based on subscription information of the terminal regarding the ProSe communication function; Receiving, from a ProSe Function, context setting information on the terminal based on a result of determining whether to permit use; And transmitting an initial context setting message of the terminal to the base station based on the received context setting information.

An Access and Mobility Management Function (AMF) for controlling a registration procedure of a terminal for a network in a wireless communication system according to an embodiment of the present disclosure includes: a transceiver; And at least one processor, wherein the at least one processor includes, from a base station, capability information of a terminal for a ProSe (Proximity-based Services) communication function and a network slice for a ProSe requested by the terminal. Controls the transmission/reception unit to receive a registration request message of the terminal including information, and determines whether to permit the use of the ProSe requested by the terminal based on the subscription information of the terminal related to the ProSe communication function, and the use Based on the result of determining whether to allow permission, control the transceiver to receive context setting information about the terminal from the ProSe Function, and based on the received context setting information, send an initial context setting message of the terminal to the base station. It is possible to control the transmission and reception unit to transmit.

According to an embodiment of the present disclosure, the base station can efficiently control and manage radio resources provided to the terminal. For example, the base station may predict the size of the radio resource to be provided to the terminal and allocate sufficient radio resources to fit the expected size of the radio resource. In addition, the base station may recover radio resources allocated to the terminal based on various reasons such as mobile communication service provider policy and network conditions.

In addition, according to an embodiment of the present disclosure, the ProSe Function may itself collect radio resource information used by the terminal by using internal information of the radio network. The ProSe Function does not collect radio resource information used by the terminal from the terminal, and can determine billing for the terminal based on the information collected inside the wireless network. Alternatively, the ProSe Function may determine billing for the terminal based on information collected from the terminal and information collected inside the wireless network.

1 illustrates a terminal registration procedure according to an embodiment of the present disclosure.
2 is a diagram illustrating a procedure for a 5G core network to provide a service parameter for direct communication to a base station according to an embodiment of the present disclosure.
3 illustrates a procedure for updating a service parameter for direct communication according to an embodiment of the present disclosure.
4 illustrates a procedure for a usage information report according to an embodiment of the present disclosure.
5 is a block diagram illustrating a configuration of a base station according to an embodiment of the present disclosure.
6 is a block diagram illustrating a configuration of a network entity according to an embodiment of the present disclosure.
7 is a block diagram illustrating a configuration of a terminal according to an embodiment of the present disclosure.
8 is a block diagram illustrating a configuration of a base station including a ProSe service processor according to an embodiment of the present disclosure.
9 is a block diagram illustrating a configuration of a network entity including a ProSe service processor according to an embodiment of the present disclosure.
10 is a block diagram illustrating a configuration of a terminal including a ProSe service processor according to an embodiment of the present disclosure.

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

In describing the embodiments, descriptions of technical contents that are well known in the technical field to which the present disclosure pertains and are not directly related to the present disclosure will be omitted. This is to more clearly convey the gist of the present disclosure by omitting unnecessary description.

For the same reason, some components in the accompanying drawings are exaggerated, omitted, or schematically illustrated. In addition, the size of each component does not fully reflect the actual size. The same reference numerals are assigned to the same or corresponding components in each drawing.

Advantages and features of the present disclosure, and a method of achieving them will be apparent with reference to the embodiments described below in detail together with the accompanying drawings. However, the present disclosure is not limited to the embodiments disclosed below, but may be implemented in a variety of different forms, only the embodiments of the present disclosure make the present disclosure complete, and common knowledge in the technical field to which the present disclosure pertains. It is provided to completely inform the scope of the disclosure to those who have, and the present disclosure is only defined by the scope of the claims. The same reference numerals refer to the same elements throughout the specification.

At this time, it will be appreciated that each block of the flowchart diagrams and combinations of the flowchart diagrams may be executed by computer program instructions. Since these computer program instructions can be mounted on the processor of a general purpose computer, special purpose computer or other programmable data processing equipment, the instructions executed by the processor of the computer or other programmable data processing equipment are described in the flowchart block(s). It creates a means to perform functions. These computer program instructions can also be stored in computer-usable or computer-readable memory that can be directed to a computer or other programmable data processing equipment to implement a function in a particular way, so that the computer-usable or computer-readable memory It may also be possible to produce an article of manufacture containing instruction means for performing the functions described in the flowchart block(s). Since computer program instructions can also be mounted on a computer or other programmable data processing equipment, a series of operating steps are performed on a computer or other programmable data processing equipment to create a computer-executable process to create a computer or other programmable data processing equipment. Instructions to perform processing equipment may also be capable of providing steps for executing the functions described in the flowchart block(s).

In addition, each block may represent a module, segment, or part of code that contains one or more executable instructions for executing the specified logical function(s). In addition, it should be noted that in some alternative execution examples, the functions mentioned in the blocks may occur out of order. For example, two blocks shown in succession may in fact be executed substantially simultaneously, or the blocks may sometimes be executed in the reverse order depending on the corresponding function.

At this time, the term'~ unit' used in this embodiment refers to software or hardware components such as field programmable gate array (FPGA) or application specific integrated circuit (ASIC), and'~ unit' performs certain roles. do. However,'~ part' is not limited to software or hardware. The'~ unit' may be configured to be in an addressable storage medium, or may be configured to reproduce one or more processors. Accordingly, according to an embodiment of the present disclosure,'~ unit' refers to components such as software components, object-oriented software components, class components, and task components, processes, functions, and attributes. Fields, procedures, subroutines, segments of program code, drivers, firmware, microcode, circuits, data, databases, data structures, tables, arrays, and variables. Components and functions provided in the'~ units' may be combined into a smaller number of elements and'~ units', or may be further separated into additional elements and'~ units'. In addition, components and'~ units' may be implemented to play one or more CPUs in a device or a security multimedia card. In addition, according to an embodiment of the present disclosure, the'~ unit' may include one or more processors.

Hereinafter, the operating principle of the present disclosure will be described in detail with reference to the accompanying drawings. In the following description of the present disclosure, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present disclosure, a detailed description thereof will be omitted. In addition, terms to be described later are terms defined in consideration of functions in the present disclosure, which may vary according to the intention or custom of users or operators. Therefore, the definition should be made based on the contents throughout the present specification. Hereinafter, the base station is a subject that performs resource allocation of the terminal, and may be at least one of a gNode B, an eNode B, a Node B, a base station (BS), a radio access unit, a base station controller, or a node on a network. The terminal may include a user equipment (UE), a mobile station (MS), a cellular phone, a smart phone, a computer, or a multimedia system capable of performing a communication function. Of course, it is not limited to the above-described example.

Hereinafter, the present disclosure describes a technique for a terminal to receive broadcast information from a base station in a wireless communication system. The present disclosure relates to a communication technique and a system for fusing a 5G communication system with IoT technology to support a higher data rate after a 4G system. This disclosure is based on 5G communication technology and IoT-related technologies, and intelligent services (for example, smart home, smart building, smart city, smart car or connected car, healthcare, digital education, retail, security and safety related services, etc. ) Can be applied.

In the following description, a term referring to broadcast information, a term referring to control information, a term related to communication coverage, a term referring to a state change (e.g., event), and network entities A term referring to, a term referring to messages, a term referring to a component of a device, and the like are exemplified for convenience of description. Accordingly, the present disclosure is not limited to terms to be described later, and other terms having an equivalent technical meaning may be used.

For convenience of description below, some terms and names defined in 3rd generation partnership project (3GPP) 5G (or New Radio (NR)) and long term evolution (LTE) standards may be used. However, the present disclosure is not limited by the above-described terms and names, and may be equally applied to systems conforming to other standards.

The wireless communication system deviated from the initial voice-oriented service, for example, 3GPP HSPA (High Speed Packet Access), LTE (Long Term Evolution or E-UTRA (Evolved Universal Terrestrial Radio Access)), LTE-Advanced. (LTE-A), LTE-Pro, 3GPP2's High Rate Packet Data (HRPD), UMB (Ultra Mobile Broadband), and IEEE's 802.16e. It is developing into a communication system.

As a representative example of a broadband wireless communication system, the LTE system employs an Orthogonal Frequency Division Multiplexing (OFDM) scheme in downlink (DL), and Single Carrier Frequency Division Multiple Access (SC-FDMA) in uplink (UL). ) Method is adopted. Uplink refers to a radio link through which a terminal (UE (User Equipment) or MS (Mobile Station)) transmits data or control signals to a base station (eNode B or base station (BS)), and downlink refers to a base station It means a wireless link that transmits data or control signals. In the multiple access method, data or control information of each user is classified by assigning and operating time-frequency resources to carry data or control information for each user so that they do not overlap with each other, that is, orthogonality is established.

As a future communication system after LTE, that is, a 5G communication system must be able to freely reflect various requirements such as users and service providers, services that satisfy various requirements must be supported. Services considered for 5G communication systems include Enhanced Mobile BroadBand (eMBB), massive Machine Type Communication (mMTC), and Ultra Reliability Low Latency Communciation (URLLC). Etc.

According to an embodiment of the present disclosure, eMBB aims to provide a data transmission rate that is more improved than the data transmission rate supported by the existing LTE, LTE-A, or LTE-Pro. For example, in a 5G communication system, eMBB must be able to provide a maximum transmission rate of 20 Gbps in downlink and 10 Gbps in uplink from the viewpoint of one base station. At the same time, an increased user perceived data rate must be provided. In order to satisfy these requirements, it is required to improve the transmission and reception technology, including more advanced multi-input multi-output (MIMO) transmission technology. In addition, by using a frequency bandwidth wider than 20 MHz in a frequency band of 3 to 6 GHz or 6 GHz or higher instead of the 2 GHz band used by the current LTE, the data transmission speed required by the 5G communication system can be satisfied.

At the same time, mMTC is being considered to support application services such as Internet of Things (IoT) in 5G communication systems. In order to efficiently provide the Internet of Things, mMTC may require large-scale terminal access support within a cell, improved terminal coverage, improved battery time, and reduced terminal cost. The IoT is attached to various sensors and various devices to provide communication functions, so it must be able to support a ^{large number of terminals (for example, 1,000,000 terminals/km 2) within a cell.} In addition, because the terminal supporting mMTC is highly likely to be located in a shaded area not covered by the cell, such as the basement of a building due to the nature of the service, it may require wider coverage than other services provided by the 5G communication system. A terminal supporting mMTC must be configured as a low-cost terminal, and since it is difficult to frequently exchange the battery of the terminal, a very long battery life time may be required.

Finally, in the case of URLLC, as a cellular-based wireless communication service used for a specific purpose (mission-critical), remote control, industrial automation, and As a service used for unmaned aerial vehicles, remote health care, emergency alerts, etc., communication that provides ultra-low latency and ultra-reliability must be provided. For example, a service supporting URLLC must satisfy an air interface latency of less than 0.5 milliseconds, and at the same time have a requirement of a packet error rate of 10-5 or less. Therefore, for a service supporting URLLC, a 5G system must provide a smaller Transmit Time Interval (TTI) than other services, and at the same time, a design requirement to allocate a wide resource in a frequency band is required. However, the aforementioned mMTC, URLLC, and eMBB are only examples of different service types, and the service types to which the present disclosure is applied are not limited to the above-described examples.

Services considered in the aforementioned 5G communication system must be provided by fusion with each other based on one framework. That is, for efficient resource management and control, it is preferable that each service is integrated into one system, controlled, and transmitted rather than independently operated.

In addition, an embodiment of the present disclosure will be described below using an LTE, LTE-A, LTE Pro, or NR system as an example, but an embodiment of the present disclosure may be applied to other communication systems having a similar technical background or channel type. In addition, the embodiments of the present disclosure may be applied to other communication systems through some modifications without significantly departing from the scope of the present disclosure, as determined by a person with skilled technical knowledge.

A term for identifying an access node used in the following description, a term for a network entity or a network function (NF), a term for messages, a term for an interface between network objects, and various Terms and the like referring to identification information are exemplified for convenience of description. Accordingly, the present disclosure is not limited to terms to be described later, and other terms referring to objects having an equivalent technical meaning may be used.

For convenience of description below, the present disclosure uses terms and names defined in 3GPP 3rd Generation Partnership Project Long Term Evolution (LTE) and 5G standards. However, the present disclosure is not limited by the terms and names, and may be equally applied to systems conforming to other standards.

Meanwhile, in the present disclosure, the term service refers to a specific communication device (or NF) performing a request from another communication device (or NF) (i.e., referring to an NF Service), a service provided by a mobile communication service provider (i.e. , Voice service, text service, data service, communication through network (communication through Uu interface) service, direct communication (referring to communication through PC5 (Sidelink) interface) service, etc.) or OTT (Over The Top) service provider, etc. It may be used interchangeably to refer to an application layer service (ie, a messenger service, a game service, etc.) to be provided.

A 5G core network according to an embodiment of the present disclosure may be configured with network functions (NF, Network Function) such as AMF, SMF, ProSe Function, PCF, NEF, UDM, UPF, and UDR. A terminal (User Equipment, Terminal, UE) can access the 5G core network through a base station (RAN, Radio Access Network).

AMF (Access and Mobility Management Function) is a network function that manages wireless network access and mobility for a terminal. SMF (Session Management Function) is a network function that manages the packet data network connection provided to the terminal. Packet data network connection is referred to as a PDU (protocol data unit) session. The PDU session information may include quality of service (QoS) information, billing information, or packet processing information. PCF (Policy Control Function) is a network function that applies the mobile communication service provider's service policy, billing policy, and PDU session policy to the terminal. UDM (Unified Data Management) is a network function that stores and manages subscriber information. Network Exposure Function (NEF) allows access to information for managing a terminal in a 5G network. For example, NEF accesses information such as subscription to the terminal's Mobility Management event, subscription to the terminal's session management event, request for session-related information, setting of the terminal's charging information, and request to change the PDU session policy for the terminal. It is possible. NEF is connected to the 5G core network NFs to deliver information about the terminal to NFs or to report information about the terminal to the outside. AF (Application Function) can use the services and functions provided by the 5G network through NEF.

5G-RAN (Radio Access Network) refers to a base station that provides a wireless communication function to a terminal. UPF (User Plane Function) serves as a gateway for transmitting packets transmitted and received by the terminal, and is controlled by SMF. UPF is connected to the Data Network (DN) and plays the role of delivering data packets generated in the 5G system to the external data network. For example, the UPF is connected to a data network connected to the Internet, and can route data packets sent from the terminal to the Internet. UDR (Unified Data Repository) is a network function that stores and manages data. For example, the UDR may store terminal subscription information and provide terminal subscription information to the UDM. The UDR can store the operator policy information and provide the operator policy information to the PCF. UDR may store network service exposure-related information and provide network service exposure-related information to NEF.

ProSe Function refers to a logical function that performs network operation necessary to provide Proximity Service. One or more ProSe Functions may exist in a Public Land Mobile Network (PLMN), and may be distributed to serve a specific area or to serve specific terminals. The ProSe Function may perform a Direct Provisioning function that provides information necessary for the terminal to use the ProSe service. Direct Provisioning function is used for direct discovery function used for UEs in proximity to directly discover each other, or for direct communication function used for device-to-device (D2D) direct communication. It means the function of provisioning necessary information to the terminal. In addition, the ProSe Function may perform a function of managing a name or code used for Direct Discovery in order to support the Direct Discovery function in the terminal. In addition, the ProSe Function can perform a function of triggering so that the terminal can perform the Direct Discovery function, and can provide a billing function or a security-related function for the use of ProSe service.

A ProSe Function according to an embodiment of the present disclosure may be referred to by a name other than the ProSe Function, and functions and operations provided by the ProSe Function (e.g., protocols and signaling procedures for communication between a terminal, NF, and AF, etc.) ) Can also be provided by other NFs (eg, PCF).

Each NF defines the services they provide, and the services provided by NF can be referred to as Npcf, Nsmf, Namf, Nnef services, and the like. For example, when the AMF delivers a session-related message to the SMF, the AMF can use a service (or API) called Nsmf_PDUSession_CreateSMContext. ProSe Function also defines NF service and can be connected with other NFs. For example, a service provided by the ProSe Function may be defined as an Nprose service, and the ProSe Function may provide a service (or API) such as Nprose_event_notification.

AF (Application Function) may be a server that provides a function for using the ProSe service. That is, the AF may be a ProSe Application Server or an NCIS Application Server that provides a Network Controlled Interactive Service (NCIS) service. ProSe Application Server or NCIS Application Server can operate like AF of a 3GPP system and, for example, can provide the following functions.

-Stores and manages the ID (i.e., ProSe user ID) that the terminal should use to use the ProSe service, and uses metadata for the ProSe user ID (which group the ProSe user corresponding to the ID belongs to, which protocol is used) Management, which applications are used, etc.)

-Saving/managing the mapping relationship between Application Layer user ID and ProSe user ID

-Manage permission-related information so that devices in the group can perform direct discovery or direct communication with each other

-Manage QoS requirements required for Direct Communication and request 5G system

-Provides service information for direct communication to 5G system

In the 3GPP system, a special service for NCIS, called an NCIS service, may be provided. The NCIS service may mean a service that allows one or more terminals to participate in an NCIS group and share data with each other for interactive gaming or data sharing. The NCIS group may mean a group of an application layer using the same NCIS session. The NCIS session may mean a session in which all terminals in one session, for example, terminals belonging to the same NCIS group, can share background information, state information, and update information of an NCIS application with each other. That is, all terminals belonging to one NCIS session may have the same background information, state information, and update information. Terminals belonging to the same NCIS group may be adjacent to each other and use D2D communication. Alternatively, even if the terminals belonging to the same NCIS group are located at a distance from each other, they may communicate through a network.

The terminal accesses the AMF through the base station and can exchange control plane signaling messages with the 5G core network. In addition, the terminal may access the UPF through the base station and exchange data with the data network and user plane data. The application server that provides the application layer service to the terminal may be referred to as AF when exchanging control plane signaling messages with the 5G core network, and may be referred to as a DN when exchanging user plane data with the terminal. In addition, AF and DN can be used interchangeably as a name that refers to the application server.

[Example 1]

Embodiment 1 of the present disclosure describes a method in which a terminal to use terminal-to-terminal direct communication (hereinafter, direct communication, D2D communication, or sidelink communication) registers a terminal in a mobile communication system. The registration request message transmitted by the terminal to the mobile communication system may include terminal request information for the terminal to use the ProSe service. During the registration process, the terminal can provide direct communication-related information to the 5G core network, and the 5G core network can authenticate based on the terminal subscription information whether or not it is allowed to provide the terminal with the direct communication service requested by the terminal. In addition, the 5G core network can provide authentication information to the base station.

1 illustrates a terminal registration procedure according to an embodiment of the present disclosure.

Referring to FIG. 1, in step 110, the terminal 101 may transmit a Registration Request message. The terminal 101 may include capability information (eg, ProSe capability, NCIS capability, public safety capability, etc.) of the terminal 101 in the Registration Request message. In addition, the terminal 101 in the Registration Request message, the network slice information that the terminal 101 wants to use by accessing the network (for example, ProSe S-NSSAI (Single-Network Slice Selection Assistance Information), NCIS S-NSSAI, mission critical S-NSSAI, etc.). A network slice (hereinafter, it may be mixed with'slice') may be referred to as S-NSSAI, and one S-NSSAI may refer to a specific service type (eg, ProSe, NCIS, Mission Critical, etc.). . The terminal may include one or more S-NSSAIs in the Registration Request message. One or more S-NSSAIs included in the Registration Request may be referred to as Requested NSSAI.

In step 112, the base station 102 receiving the Registration Request message from the terminal 101, the information received from the terminal 101 (for example, Requested NSSAI (S-NSSAI), 5G-GUTI (Globally Unique Temporary) of the terminal Identifier), terminal capability, etc.), it is possible to select the AMF to transmit the received message. The base station 102 may deliver a Registration Request message to the selected AMF 103.

In step 114, the AMF 103 may request UE subscription information from the UDM 105. The message for requesting terminal subscription information may include a terminal ID (eg, 5G-GUTI, International Mobile Subscriber Identity (IMSI), Subscription Permanent Identifier (SUPI), Generic Public Subscription Identifier (GPSI), etc.)). The UDM 105 may find terminal subscription information corresponding to the terminal ID. The terminal subscription information may include information on whether the terminal has directly subscribed to a communication service.

In step 116, the AMF (130) from the UDM (105) terminal subscription information (e.g., Access and Mobility Subscription data, SMF Selection Subscription data, ProSe Function Selection Subscription data, UE context, subscribed DNNs, subscribed S-NSSAIs, etc. ) Can be obtained. For example, ProSe Function Selection Subscription data may include at least one or more of S-NSSAI, subscribed DNN list, default DNN, Roaming indication, or interworking with EPS indication.In the terminal subscription information, whether the terminal can use the ProSe service Authentication information indicating the may be included. For example, ProSe capability, ProSe authorization indication, PC5-UE-AMBR (Aggregated Maximum Bit Rate), ProSe-based services (e.g., Network Controlled Interactive Service (NCIS), public safety, PC5 discovery, direction communication, UE-to-UE relay, UE-to-network relay, inter-PLMN communication, etc.) can be used, network slice information for using ProSe (S-NSSAI), subscribed DNN information, and the like.

In step 118, the AMF 103 may authenticate whether a function requested by the terminal 101 or a service including a D2D communication service may be provided in step 112 based on the terminal subscription information received from the UDM 105. For example, when the terminal 101 requests ProSe capability (eg, ProSe capability, NCIS capability, etc.), the AMF 103 may check whether the corresponding ProSe capability is included in the terminal subscription information. When the terminal 101 requests S-NSSAI (e.g., ProSe S-NSSAI, NCIS S-NSSAI, etc.) for ProSe service, the AMF 103 checks whether the corresponding S-NSSAI is included in the terminal subscription information. I can confirm. When the terminal subscription information includes the ProSe capability requested by the terminal or the terminal subscription information includes the ProSe capability requested by the terminal and the ProSe S-NSSAI requested by the terminal, authentication of the use of the ProSe service of the terminal 101 may be successful. . If the terminal ProSe service use authentication is successful, step 124 may be performed. As described above, the AMF may perform authentication of the use of the ProSe service of the terminal during the terminal registration procedure.

In steps 120 and 122, the AMF 103 may establish a policy association with the PCF 104 and obtain policy information from the PCF 104. The policy information may include policy information necessary for the terminal to use the ProSe service.

In step 124, the AMF 103 is information received from the terminal in step 112 (eg, ProSe capability, Requested NSSAI, etc.) to information received from the UDM in step 116 (eg, ProSe Function Selection Subscription data, etc.) Based on the ProSe Function 106 can be selected. The AMF 103 may transmit a ProSe service request message to the selected ProSe Function 106. The ProSe service request message may include a terminal ID (eg, 5G-GUTI, IMSI, SUPI, GPSI, etc.), ProSe authentication information, and ProSe service information authorized by the terminal.

In step 126, the ProSe Function 106 may create a ProSe UE context for the terminal 101 referred to as the received terminal ID. If ProSe UE context information for the terminal 101 already exists, the corresponding ProSe UE context may be updated based on the received information. The ProSe UE Context may include at least one of a terminal ID, a serving AMF of the terminal, ProSe authentication information, and a degree of ProSe service permitted by the terminal. The ProSe Function 106 may transmit a ProSe service response message to the AMF 103. The ProSe service response message may include ProSe Function 106 information (eg, NF instance ID of ProSe Function, IP address(s), FQDN, etc.). The AMF 103 may add the received ProSe Function information to the UE context of the terminal 101.

In step 128, the AMF 103 may transmit an Initial UE Context Setup message or a UE Context Modification Request message to the base station 102. The Initial UE Context Setup message or the UE Context Modification Request message may be transmitted together with a Registration Accept message transmitted by the AMF 103 to the terminal 101. AMF (103) in the message of step 128, ProSe authentication information (ProSe authorized indication), ProSe service information licensed by the terminal (e.g., NCIS, public safety, etc.), ProSe-related network slice information or terminal licensed by the terminal At least one of UE-PC5-AMBR information to be used for ProSe direct communication may be included. The base station 102 may store the received information.

ProSe authentication information may be an indication indicating whether the terminal can use ProSe communication.

According to an embodiment of the present disclosure, the ProSe service information may include one or more ProSe services. One or more ProSe services may be identified by ProSe ID. The ProSe ID may include at least one ID of a service ID representing a service, a group ID representing a group, a terminal ID representing the terminal 101, or a terminal ID representing a terminal other than the terminal 101. In addition, the ProSe ID may be any one of the above-described IDs. In addition, the format of the ProSe ID may be a ProSe Layer-2 ID or an application layer ID used for direct communication.

According to an embodiment of the present disclosure, the ProSe service information may include an indication for each ProSe service indicating whether the terminal can use the ProSe service identified by the ProSe ID.

According to an embodiment of the present disclosure, the ProSe-related network slice information may be S-NSSAI. In addition, PC5-AMBR values may be different for each ProSe service. Accordingly, UE-PC5-AMBR information used for direct ProSe communication may include a PC5-AMBR value corresponding to a ProSe service identified as a ProSe ID. In addition, the PC5-AMBR value may be different for each cast type of direct communication. Accordingly, the UE-PC5-AMBR information used for ProSe direct communication may include a PC5-AMBR value for each cast type (eg, broadcast, groupcast, unicast, etc.) of direct communication.

In addition, the UE-PC5-AMBR information used for ProSe direct communication may include an aggregate PC5-AMBR value to be used by the UE in ProSe communication. The total PC5-AMBR value to be used by the terminal in ProSe communication may be greater than, equal to, or less than the sum of the PC5-AMBR values for each ProSe service. In addition, the total PC5-AMBR value to be used by the terminal in ProSe communication may be greater than, equal to, or less than the sum of the PC5-AMBR values for each cast type.

The information provided by the AMF 103 to the base station is information included in the terminal subscription information received by the AMF 103 from the UDM 104 in step 116, or the AMF 103 received from the PCF 104 in step 122 It may be information included in one piece of information, or information included in information received from the ProSe Function 106 by the AMF 103 in step 126.

In step 129, the base station 102 may deliver a Registration Accept message to the terminal 101. The Registration Accept message may include ProSe service information available to the terminal 101 (eg, ProSe authorized, NCIS authorized, ProSe S-NSSAI, NCIS S-NSSAI, etc.). The terminal 101 can store the received information and then use it for direct ProSe communication. The terminal that has completed the terminal registration procedure can confirm that ProSe communication is possible based on the information included in the Registration Accept message.

[Example 2]

Embodiment 2 of the present disclosure describes a method of determining a service parameter for each service using direct communication by a 5G core network and providing the determined service parameter to a base station. The 5G core network can determine service parameters through interaction with AF. The base station stores service parameters provided from the 5G core network, and may determine radio resource allocation based on the stored service parameters when the terminal requests radio resources.

2 is a diagram illustrating a procedure for a 5G core network to provide a service parameter for direct communication to a base station according to an embodiment of the present disclosure.

Referring to FIG. 2, in step 210, the terminal 101 may access the application server 202 and exchange information for using a service. The service exchanged in step 210 may be a service using direct communication between terminals (eg, NCIS group communication). The application server 202 may determine information for a service using direct communication. For example, information for a service using direct communication includes a service ID indicating a service, a group ID indicating a group of group communication, a terminal ID of the terminal 101, and a counter terminal communicating directly with the terminal 101. It may include at least one of the terminal ID (s) of (s) or required radio resource requirements. The service ID, group ID, and terminal ID may be defined in the form of a ProSe Layer-2 ID or an application layer ID, respectively.

In step 212, the application server 202 may provide the service information to the 5G core network of the serving PLMN to which the terminal 101 is connected. For example, the AF 202 may transmit a ProSe communication request message to the NEF 201. The ProSe communication request message includes service information (e.g., service ID, Group ID, ProSe Group Layer-2 ID, terminal 101 ID, ID(s) of the counterpart terminal(s), required radio resource requirements, etc.) Can be included. The NEF 201 may store service information in the UDR. The UDR may transmit a notification message including stored service information to the ProSe Function 106. Alternatively, the NEF 201 may store service information in the UDR through the UDM 105. The UDM 105 may transmit a notification message including service information stored in the UDR to the ProSe Function 106. Alternatively, the NEF 201 may directly transmit service information to the ProSe Function 106.

The ProSe Function 106 can receive service information in various ways as described above, and the ProSe Function 106 that has received the service information, in step 214, receives the service information received from the AF 202, the mobile communication service provider policy ( Policy, ProSe Policy), terminal subscription information, etc., can determine service parameters. For example, the service parameter includes radio resource information (e.g., PC5-AMBR for a service) that the service can use, and service authentication information (e.g., authorized indication for a service) whether the terminal can use the service. ), etc. In addition, the service parameter includes service information received from the AF 202, for example, service ID, Group ID, ProSe Group Layer-2 ID, terminal 101 ID, ID(s) of counterpart terminal(s), etc. Can be included.

According to an embodiment of the present disclosure, the ProSe Function 106 is based on at least one of terminal subscription information, operator policy, and required radio resource requirements requested by the AF 202, the ProSe direct communication requested by the AF 202 You can certify whether it is possible. If authentication is successful, the ProSe Function 106 may determine a PC5-AMBR value to be used for ProSe direct communication requested by the AF 202. Alternatively, a PC5-AMBR value may be included in the service information transmitted by the AF 202 in step 212, and the ProSe Function 106 may determine to use the received PC5-AMBR value. Further, the determination of the PC5-AMBR value may be performed in the PCF 104.

According to an embodiment of the present disclosure, the ProSe Function 106 may return a response message to the ProSe communication request message received from the AF 202 to the AF 202 in step 212. The response message may include the AF request ID. The AF request ID may indicate that a message exchanged between the AF 202 and the ProSe Function 106 is related to the ProSe communication request in step 212.

According to an embodiment of the present disclosure, the ProSe Function 106 provides service parameter information (e.g., service ID, group ID, terminal 101 ID, counterpart) associated with the AF request ID and AF request ID in the ProSe UE Context. ID(s) of the terminal(s), PC5-AMBR, etc. to be used for ProSe direct communication requested by the AF can be stored.

In step 216, the ProSe Function 106 may transmit a ProSe service request message or a ProSe service notification message to the serving AMF 103 of the terminal 101. The ProSe service request message or the ProSe service notification message may include service parameters acquired, determined, or stored by the ProSe Function 106. The service parameter is the direct communication information requested by the AF 202 (e.g., service ID, Group ID, ProSe Group Layer-2 ID, terminal 101 ID, ID(s) of the counterpart terminal(s)), ProSe Function It may include at least one of the PC5-AMBR value determined by (106) and the ProSe direct communication authentication indicator (authorized indication).

In step 218, the AMF 103 may determine to provide the received service parameter to the base station 102.

In step 220, the AMF 103 may transmit a UE Context Modification request message to the base station 102. The UE Context Modification request message may include the service parameter information described above in steps 214 and 216. The service authentication information base station 102 may store the received service parameter information and use the stored service parameter information as information for allocating radio resources to the terminal 101 in step 226.

In step 222, the terminal 101 may start a service using direct communication prepared in step 210. In order to use ProSe direct communication, the terminal 101 must acquire radio resource information to be used for direct communication.

In step 224, the terminal 101 may directly transmit a communication resource request message to the base station. In the resource request message, the ID of the terminal 101 (eg, ProSe Layer-2 ID, application layer ID, etc.), and service ID (eg, ProSe Layer-2 ID, application layer ID, etc.) using direct communication , At least one of the ID(s) of the counterpart terminal(s) to which the terminal 101 transmitted data to PC5 (eg, ProSe Layer-2 ID(s), application layer ID(s)) or a cast type Information may be included. When the type of direct communication service to be used by the terminal 101 is group communication, a group ID (eg, ProSe Group Layer-2 ID, application layer ID, etc.) may be further included in the resource request message.

In step 226, the base station 102 is based on the request information received from the terminal 101 and the service parameter information stored by the base station 102 received from the AMF 103 in steps 128 to 220 of FIG. Direct communication (sidelink) resources to be allocated to 101 can be determined. For example, the base station 102 may check the service authentication information for the ProSe Group Layer-2 ID requested by the terminal 101, and determine to allocate radio resources when authentication is performed. In addition, the base station 102 may check service authentication information for the Layer-2 ID of the terminal 101 and, if authentication, may determine to allocate radio resources. In addition, the base station 102 may check service authentication information for the Layer-2 ID of the counterpart terminal requested by the terminal 101, and determine to allocate radio resources when authentication is performed. In addition, the base station 102 may check service authentication information for a service ID or a group ID used by the terminal 101 and, if authentication is performed, determine to allocate radio resources.

According to an embodiment of the present disclosure, the base station 102 may determine a radio resource by referring to the PC5-AMBR value for the ProSe Group Layer-2 ID requested by the terminal 101. In addition, the base station 102 may determine radio resources by referring to the PC5-AMBR value for the Layer-2 ID of the terminal 101. In addition, the base station 102 may determine a radio resource by referring to the PC5-AMBR value for the Layer-2 ID of the counterpart terminal requested by the terminal 101. In addition, the base station 102 may determine a radio resource by referring to a PC5-AMBR value for a service ID or a group ID used by the terminal 101.

In addition, the base station 102 may determine a radio resource by referring to the PC5-AMBR value for the cast type requested by the terminal 101. The range of the ProSe Layer-2 ID may be different for each cast. The base station 102 may identify the cast type requested by the terminal 101 based on the source ProSe Layer-2 ID and/or the destination ProSe Layer-2 ID received from the terminal 101. For example, when the source ProSe Layer-2 ID and/or the destination ProSe Layer-2 ID are included in a range of ProSe groupcast, the base station 102 uses the cast type requested by the terminal 101 as a group cast. Can be identified. Alternatively, the base station 102 may identify the cast type based on the cast type indicator received from the terminal 101.

In step 228, the base station 102 may inform the terminal 101 of the determined direct communication radio resource.

In step 230, the terminal 101 may transmit data through the PC5 link using the radio resource information received from the base station 102.

There can be only one AMBR value for ProSe communication. However, according to an embodiment of the present disclosure, the AMBR value may be different for each type of service that can be identified through an ID (for example, a cast type (broadcast or unicast) or a service provided by each application). have. The terminal 101 can simultaneously use multiple types of services using direct communication. The terminal 101 may request a radio resource from the base station 102 for data transmission (step 224), and the base station 102 may request the radio resource according to the information included in the request message even if the request is from the same terminal 101. It can be assigned differently (step 226).

The terminal 101 may communicate with multiple counterpart terminals (eg, different terminals can be distinguished by different destination ProSe Layer-2 IDs) using direct communication. The range of the ProSe Layer-2 ID may be different for each cast. The base station 102 may identify the cast type requested by the terminal 101 based on the source ProSe Layer-2 ID and/or the destination ProSe Layer-2 ID received from the terminal 101. For example, when the source ProSe Layer-2 ID and/or the destination ProSe Layer-2 ID are included in a range of ProSe unicast, the base station 102 uses the cast type requested by the terminal 101 to be unicast. Can be identified. Alternatively, the base station 102 may identify the cast type based on the cast type indicator received from the terminal 101.

The terminal 101 may request a radio resource from the base station 102 for communication with each counterpart terminal (step 224) (for example, including a destination ProSe Layer-2 ID in the request message), and the base station 102 Is a request from the same terminal 101, but radio resources may be differently allocated (step 226) for different counterpart terminals (eg, separated by different destination ProSe Layer-2 IDs).

The terminal 101 may participate in several group communication (eg, separated by different destination ProSe Layer-2 IDs) using direct communication. According to an embodiment of the present disclosure, multiple group communications may be classified using different destination ProSe Layer-2 IDs. For example, the value of the destination ProSe Layer-2 ID itself may refer to different group communication. The terminal 101 may request radio resources from the base station 102 for each group communication (step 224) (e.g., including a destination ProSe Layer-2 ID corresponding to each group in the request message), and the base station ( 102) is a request from the same terminal 101, but since the group (eg, classified by different destination ProSe Layer-2 IDs) is different, radio resources may be differently allocated according to the group (step 226). That is, the base station 102 may allocate radio resources according to the AMBR value mapped to the destination ProSe Layer-2 ID.

3 illustrates a procedure for updating a service parameter for direct communication according to an embodiment of the present disclosure.

Referring to FIG. 3, in step 312, the AF 202 may transmit a ProSe communication update message including updated service information to the ProSe Function 106. For example, the ProSe communication update message may include changed radio resource requirements, AF request ID, service information that may indicate a service, and the like. Upon receiving the update request from the AF 202, the ProSe Function 106 may adjust the PC5-AMBR value according to the changed radio resource requirement in step 314. The ProSe Function 106 is, among the ProSe UE Contexts stored by the ProSe Function 106, the adjusted PC5-AMBR value in the ProSe UE Context linked with the AF request ID and/or service information received from the AF 202. Can be saved.

In step 312, the AF 202 may transmit a ProSe communication release message to the ProSe Function 106. The ProSe communication release message may include an AF request ID, service information that may indicate a service, and the like. Upon receiving the release request from the AF 202, the ProSe Function 106 determines, in step 314, to stop the service using direct communication linked with the AF request ID and/or service information received from the AF 202, The PC5-AMBR value stored in the ProSe UE Context can be set to 0. Alternatively, the ProSe Function 106 may delete the ProSe UE Context associated with the AF request ID and/or service information received from the AF 202. That is, the ProSe Function 106 may cancel service authentication of the terminal 101.

In step 314, the ProSe Function 106 may determine to update the service parameter. For example, the ProSe Function 106 may decide to increase or decrease the current PC5-AMBR value. Alternatively, the ProSe Function 106 may decide to cancel service authentication or stop a specific service using ProSe communication. For example, the ProSe Function 106 may set (assign) the current PC5-AMBR value to 0. Alternatively, the ProSe Function 106 may cancel service authentication.

The determination of the ProSe Function 106 in step 314 may be determined based on a mobile communication provider policy, a current network situation, and subscription information of a terminal. Alternatively, the determination of the ProSe Function 106 in step 314 may be determined by the request of the AF 202 (step 312). The request message of step 312 may be delivered to the ProSe Function 106 through the path described in step 212 of FIG. 2.

In step 316, the ProSe Function 106 may transmit a ProSe service request message or a ProSe service notification message to the serving AMF 103 of the terminal 101. The ProSe service request message to the ProSe service notification message may include service parameters (eg, changed PC5-AMBR, service authentication indicator, etc.) determined by the ProSe Function 106.

In step 318, the AMF 103 may determine to provide the received service parameter to the base station 102.

In step 320, the AMF 103 may transmit a UE Context Modification request message to the base station 102. The UE Context Modification request message may include service parameter information. The base station 102 may update the previously stored service parameter information with newly received service parameter information. If PC5-AMBR is set to 0 or service authentication has been canceled, the base station 102 may decide not to allocate radio resources to the terminal 101 in step 326. Alternatively, if the service authentication is cancelled, the base station 102 knows that the service is no longer valid, and may delete the stored service parameter information.

According to an embodiment of the present disclosure, the cancellation of service authentication may be implicitly indicated by the AMF 103 not sending a service authentication indicator to the base station 102 as service authentication information. Alternatively, the cancellation of service authentication may be explicitly indicated by setting the value of the service authentication indicator to cancellation (eg, '0' for service authentication, '1' for service authentication cancellation, etc.). .

In step 322, the terminal 101 may continue to use the service started through steps 222 to 230 of FIG. 2.

In step 324, the terminal 101 may directly transmit a communication resource request message to the base station. The resource request message includes the Layer-2 ID of the terminal 101, the service ID using direct communication, the Layer-2 ID of the counterpart terminal that the terminal 101 transmitted data to PC5, and in the case of group communication, the Group ID, ProSe. At least one or more of Group Layer-2 IDs may be included.

In step 326, the base station 102 receives the request information received from the terminal 101 and the service parameter information received from the AMF 103 and stored by the base station 102, based on the direct communication to be allocated to the terminal 101 ( sidelink) resource can be determined. For example, the base station 102 may check the service authentication indicator for the ProSe Group Layer-2 ID requested by the terminal 101, and may decide not to allocate radio resources when the authentication is cancelled. In addition, the base station 102 may check the service authentication indicator for the Layer-2 D of the terminal 101 and may decide not to allocate radio resources when the authentication is cancelled. In addition, the base station 102 may check the service authentication indicator for the Layer-2 ID of the counterpart terminal requested by the terminal 101, and determine not to allocate radio resources when the authentication is cancelled. In addition, the base station 102 may check a service authentication indicator for a service ID or a group ID used by the terminal 101, and may decide not to allocate radio resources when the authentication is cancelled.

According to an embodiment of the present disclosure, when the PC5-AMBR value for the ProSe Group Layer-2 ID requested by the terminal 101 is 0, the base station 102 may decide not to allocate radio resources. In addition, when the PC5-AMBR value for Layer-2 D of the terminal 101 is 0, the base station 102 may decide not to allocate radio resources. In addition, when the PC5-AMBR value for the Layer-2 ID of the counterpart terminal requested by the terminal 101 is 0, the base station 102 may decide not to allocate radio resources. In addition, when the PC5-AMBR value for the service ID or the group ID used by the terminal 101 is 0, the base station 102 may decide not to allocate radio resources.

In step 328, the base station 102 may transmit the determined direct communication radio resource response message to the terminal 101. For example, when it is determined not to allocate radio resources in step 326, information indicating rejection may be included in the response message.

In step 330, the terminal 101 may not transmit data through the PC5 link because there is no radio resource information received from the base station 102. Alternatively, the terminal 101 may transmit data through the PC5 link (out-of-coverage operation) by using the radio resource information set in advance.

[Example 3]

Embodiment 3 describes a method of collecting information on how much a terminal has used a direct communication link (sidelink) radio resource in a mobile communication network.

4 illustrates a procedure for a usage information report according to an embodiment of the present disclosure.

Referring to FIG. 4, the ProSe Function 106 requests the base station 102 to report the usage information of the terminal, and the base station 102 creates a usage information report of the terminal according to the request and informs the ProSe Function 106. have.

In step 410, the ProSe Function 106 may determine how much the amount of Sidelink resources the terminal uses and to collect data usage information. The determination may occur after steps 214 to 230 of FIG. 2. Alternatively, the determination may be made in step 214 of FIG. 2.

The ProSe Function 106 may determine a reporting condition for collecting data usage information. For example, the reporting condition is to periodically report data usage, and period information may be included. Alternatively, when a certain amount of data is used by the terminal, it is decided to report, and data usage information as a standard may be included. Alternatively, you can choose to report immediately whenever the terminal uses data. In addition, information on whether the base station 102 reports through the AMF 103 or directly to the ProSe Function 106 may be included. When reporting directly to the ProSe Function 106, connection information with the ProSe Function 106 (eg, terminating point of the ProSe Function, etc.) may be included.

In step 412, the ProSe Function 106 may transmit a usage information report request message including a reporting condition to the AMF 103. When step 410 is determined in step 214 of FIG. 2, the usage information report request message of step 412 may be transmitted together in step 216 of FIG. 2.

In step 414, the AMF 103 may transmit a usage information reporting control message including a reporting condition to the base station 102. When step 410 is determined in step 214 of FIG. 2, the usage information reporting control message of step 414 may be included in the UE Context Modification request message of step 220 of FIG. 2 and transmitted together.

In step 416, the base station 102 receiving the usage information reporting control message may store the reporting request and reporting condition information.

When the base station 102 directly allocates communication resources to the terminal 101 as described in step 226 of FIG. 2, the allocated resource information may be stored. According to an embodiment of the present disclosure, the base station 102 may regard the communication resource allocated to the terminal 101 as data or radio resources used by the terminal 101. That is, the base station 102 may consider that the terminal 101 uses the allocated communication resource. When the reporting condition is satisfied (for example, the reporting period is reached, the standard data usage to be reported is reached, etc.), the base station 102 may transmit a usage information report message to the AMF 103 in step 418. The usage information report message may include a terminal ID indicating the terminal (eg, 5G-GUTI, IMSI, etc.), the total amount of data or radio resources used by the terminal, and a period for collecting the usage. For example, the total amount of data or radio resources used by the terminal may be the total amount of radio resources allocated by the base station 102 to the terminal 101.

The AMF 103 may transmit a usage information report message to the ProSe Function 106 in step 420. The ProSe Function 106 collects the usage information report (e.g., terminal ID (e.g., 5G-GUTI, IMSI, etc.)) received from the AMF 103, data used by the terminal, the total amount of radio resources, and usage. Period, etc.). The ProSe Function 106 may calculate a direct communication radio resource and data transmission amount used by the terminal based on the usage information report, and use the calculated transmission amount for billing to the terminal 101.

According to an embodiment of the present disclosure, the ProSe Function 106 determines the reliability of the communication resource usage information report received from the base station 102 higher than the reliability of the communication resource usage information report directly received from the terminal 101. I can. This is because, for example, the terminal 101 may report a resource usage that is less than the resource usage actually used by the terminal 101. Therefore, the ProSe Function 106 can be more reliable in the report on the amount of resources allocated by the base station 102 to the terminal 101, as reported by the base station 102, than the report from the terminal 101.

According to an embodiment of the present disclosure, the ProSe Function 106 is based on the first communication resource usage information report received from the terminal 101 and/or the second communication resource usage information report received from the base station 102. The radio resource and data transmission amount used by 101 may be calculated, and the calculated transmission amount may be used for billing to the terminal 101. For example, the ProSe Function 106 is the radio resource and data used by the terminal 101, which is the larger or smaller of the transmission amount according to the first communication resource usage information report and the transmission amount according to the second communication resource usage information report. It can be determined by the amount of transmission. Alternatively, the ProSe Function 106 reports the first communication resource usage information and the second communication resource usage information based on at least one of a network state, a policy of a mobile communication service provider, a terminal subscription information, or a request from the AF 202 You can decide which report to trust. The ProSe Function 106 may calculate the radio resource and data transmission amount used by the terminal 101 based on the resource usage information report determined to be trusted, and use the calculated transmission amount for charging to the terminal 101.

5 is a block diagram illustrating a configuration of a base station according to an embodiment of the present disclosure.

Referring to FIG. 5, the base station may include a transceiver 510, a memory 520, and a processor 530. According to the above-described communication method of the base station, the transmission/reception unit 510, the processor 530, and the memory 520 of the base station may operate. However, the components of the base station are not limited to the above-described example. For example, the base station may include more or fewer components than the above-described components. In addition, the transceiver 510, the processor 530, and the memory 520 may be implemented in the form of a single chip. Also, the processor 530 may include one or more processors.

The transceiving unit 510 refers to a receiving unit of a base station and a transmitting unit of the base station, and may transmit and receive signals with a terminal or a network entity. Signals transmitted and received with the terminal or network entity may include control information and data. To this end, the transceiver 510 may include an RF transmitter that up-converts and amplifies a frequency of a transmitted signal, and an RF receiver that amplifies a received signal with low noise and down-converts a frequency. However, this is only an embodiment of the transmission/reception unit 510, and components of the transmission/reception unit 510 are not limited to the RF transmitter and the RF receiver.

In addition, the transmission/reception unit 510 may receive a signal through a wireless channel, output it to the processor 530, and transmit a signal output from the processor 530 through a wireless channel.

The memory 520 may store programs and data necessary for the operation of the base station. In addition, the memory 520 may store control information or data included in a signal obtained from the base station. The memory 520 may be composed of a storage medium such as a ROM, a RAM, a hard disk, a CD-ROM, a DVD, or a combination of storage media. In addition, the memory 520 may not exist separately and may be included in the processor 530 and configured.

The processor 530 may control a series of processes so that the base station can operate according to the above-described embodiment of the present disclosure. For example, the processor 530 may receive a control signal and a data signal through the transceiver 510 and process the received control signal and data signal. In addition, the processor 530 may process the processed control signal and data. The signal may be transmitted through the transmission/reception unit 510. In addition, the processor 530 may control each component of the base station to configure and transmit the DCI including allocation information for the PDSCH.

6 is a block diagram illustrating a configuration of a network entity according to an embodiment of the present disclosure.

Each of the network entities or network functions (NFs) described with reference to FIGS. 1 to 4 may correspond to the network entity of FIG. 6. For example, the structure of the ProSe Fuction 106 and the AMF 103 may correspond to the structure of the network entity described in FIG. 6.

Referring to FIG. 6, the network entity may include a transceiver 610, a memory 620, and a processor 630. According to the above-described communication method of the network entity, the transmission/reception unit 610, the processor 630, and the memory 620 of the network entity may operate. However, the constituent elements of the network entity are not limited to the above-described example. For example, the network entity may include more or fewer components than the above-described components. In addition, the transceiver 610, the processor 630, and the memory 620 may be implemented in the form of a single chip. Also, the processor 630 may include one or more processors.

The transmission/reception unit 610 refers to a reception unit of a network entity and a transmission unit of a network entity, and may transmit and receive signals to and from a base station, a terminal, or another network entity. Signals transmitted and received with a base station, a terminal, or another network entity may include control information and data. To this end, the transceiver 610 may include an RF transmitter that up-converts and amplifies a frequency of a transmitted signal, and an RF receiver that amplifies a received signal with low noise and down-converts a frequency. However, this is only an embodiment of the transmission/reception unit 610, and components of the transmission/reception unit 610 are not limited to the RF transmitter and the RF receiver.

In addition, the transmission/reception unit 610 may receive a signal through a wireless channel, output it to the processor 630, and transmit a signal output from the processor 630 through a wireless channel.

The memory 620 may store programs and data necessary for the operation of the network entity. In addition, the memory 620 may store control information or data included in a signal obtained from a network entity. The memory 620 may be composed of a storage medium such as a ROM, a RAM, a hard disk, a CD-ROM, and a DVD, or a combination of storage media. Also, the memory 620 may not exist separately and may be included in the processor 630 and configured.

The processor 630 may control a series of processes to allow the network entity to operate according to the above-described embodiment of the present disclosure. For example, the processor 630 may receive a control signal and a data signal through the transceiving unit 610 and process the received control signal and data signal. In addition, the processor 630 may process the processed control signal and data. The signal may be transmitted through the transmission/reception unit 610.

7 is a block diagram illustrating a configuration of a terminal according to an embodiment of the present disclosure.

Referring to FIG. 7, the terminal may include a transceiver 710, a memory 720, and a processor 730. According to the above-described communication method of the terminal, the transmission/reception unit 710, the processor 730, and the memory 720 of the terminal may operate. However, the components of the terminal are not limited to the above-described example. For example, the terminal may include more or fewer components than the above-described components. In addition, the transmission/reception unit 710, the processor 730, and the memory 720 may be implemented in the form of a single chip. Also, the processor 730 may include one or more processors.

The transmission/reception unit 710 is collectively referred to as a reception unit of a terminal and a transmission unit of a terminal, and may transmit and receive signals with a network entity, a base station, or another terminal. Signals transmitted and received with a network entity, a base station, or another terminal may include control information and data. To this end, the transceiver 710 may include an RF transmitter that up-converts and amplifies a frequency of a transmitted signal, and an RF receiver that amplifies a received signal with low noise and down-converts a frequency. However, this is only an embodiment of the transmission/reception unit 710, and components of the transmission/reception unit 710 are not limited to the RF transmitter and the RF receiver.

In addition, the transmission/reception unit 710 may receive a signal through a wireless channel, output it to the processor 730, and transmit a signal output from the processor 730 through a wireless channel.

The memory 720 may store programs and data necessary for the operation of the terminal. In addition, the memory 720 may store control information or data included in a signal acquired from the terminal. The memory 720 may be composed of a storage medium such as a ROM, a RAM, a hard disk, a CD-ROM, and a DVD, or a combination of storage media. Also, the memory 720 may not exist separately and may be included in the processor 730 and configured.

The processor 730 may control a series of processes so that the terminal can operate according to the above-described embodiment of the present disclosure. For example, the processor 730 may receive a control signal and a data signal through the transceiver 710 and process the received control signal and data signal. The signal may be transmitted through the transmission/reception unit 710. In addition, the processor 730 may control a component of the terminal to receive a DCI composed of two layers and simultaneously receive a plurality of PDSCHs.

8 is a block diagram illustrating a configuration of a base station including a ProSe service processor according to an embodiment of the present disclosure.

Referring to FIG. 8, a base station according to an embodiment of the present disclosure includes a processor 830, a ProSe service processor 840, a transceiver 810 including a transmitter and a receiver, and a memory 820 that control the overall operation of the base station. ) Can be included. Of course, it is not limited to the above example, and the base station may include more or fewer configurations than those shown in FIG. 8.

According to an embodiment of the present disclosure, the ProSe service processor 840 may control a procedure for providing the aforementioned ProSe service. The ProSe service processor 840 may exist independently as shown in FIG. 8, and the processor 830 may perform the operation of the ProSe service processor 840. The ProSe service processor 840 may control other components of the base station to provide ProSe service.

According to an embodiment of the present disclosure, the transceiving unit 810 may transmit and receive signals with network entities or terminals. Signals transmitted and received with network entities or terminals may include control information and data. In addition, the transceiver 810 receives a signal through a wireless channel and outputs it to the processor 830 and the Prose service processor 840, and transmits the signal output from the processor 830 and the ProSe service processor 840 through the wireless channel. Can be transmitted. In addition, the ProSe service processor 840 may be an application processor (AP), a communication processor (CP), a circuit, an application-specific circuit, or at least one processor.

According to an embodiment of the present disclosure, the processor 830 may control the base station to perform any one of the above-described embodiments. Meanwhile, the processor 830, the memory 820, and the transmission/reception unit 810 do not necessarily have to be implemented as separate modules, and may be implemented as a single component in the form of a single chip. In addition, the processor 830, the ProSe service processor 840, and the transceiver 810 may be electrically connected. Further, the processor 830 may be an application processor (AP), a communication processor (CP), a circuit, an application-specific circuit, or at least one processor.

According to an embodiment of the present disclosure, the memory 820 may store data such as a basic program, an application program, and setting information for the operation of the base station. In particular, the memory 820 provides stored data according to the request of the processor 830 or the ProSe service processor 840. The memory 820 may be formed of a storage medium such as a ROM, a RAM, a hard disk, a CD-ROM, and a DVD, or a combination of storage media. Also, there may be a plurality of memories 820. Also, the processor 830 or the ProSe service processor 840 may perform the above-described embodiments based on a program for performing the above-described embodiments of the present disclosure stored in the memory 820.

9 is a block diagram illustrating a configuration of a network entity including a ProSe service processor according to an embodiment of the present disclosure.

Each of the network entities or network functions (NFs) described with reference to FIGS. 1 to 4 may correspond to the network entity of FIG. 9. For example, the structure of the ProSe Fuction 106 and the AMF 103 may correspond to the structure of the network entity described in FIG. 9.

Referring to FIG. 9, a network entity according to an embodiment of the present disclosure includes a processor 930, a ProSe service processor 940, a transmitter and a receiver that controls the overall operation of the network entity, and a transceiver 910 and a memory. (920) may be included. Of course, it is not limited to the above example, and the network entity may include more or fewer configurations than those shown in FIG. 9.

According to an embodiment of the present disclosure, the ProSe service processor 940 may control a procedure for providing the aforementioned ProSe service. The ProSe service processor 940 may exist independently as shown in FIG. 9, and the processor 930 may perform the operation of the ProSe service processor 940. The ProSe service processor 940 may control other components of the terminal to provide ProSe service.

According to an embodiment of the present disclosure, the transceiver 910 may transmit and receive signals with at least one of other network entities, a base station, or a terminal. A signal transmitted and received with at least one of other network entities, a base station, or a terminal may include control information and data.

According to an embodiment of the present disclosure, the processor 930 or the ProSe service processor 940 may control a network entity to perform any one of the above-described embodiments. Meanwhile, the processor 930, the memory 920, and the transmission/reception unit 910 do not necessarily have to be implemented as separate modules, and may be implemented as a single component in the form of a single chip. In addition, the processor 930, the ProSe service processor 940, and the transceiver 910 may be electrically connected. Further, the processor 930 may be a circuit, an application-specific circuit, or at least one processor.

According to an embodiment of the present disclosure, the memory 920 may store data such as a basic program, an application program, and setting information for an operation of a network entity. In particular, the memory 920 provides stored data according to the request of the processor 930 or the ProSe service processor 940. The memory 920 may be composed of a storage medium such as a ROM, a RAM, a hard disk, a CD-ROM, and a DVD, or a combination of storage media. Also, there may be a plurality of memories 920. Also, the processor 920 and the ProSe service processor 940 may perform the above-described embodiments based on a program for performing the above-described embodiments of the present disclosure stored in the memory 910.

10 is a block diagram illustrating a configuration of a terminal including a ProSe service processor according to an embodiment of the present disclosure.

Referring to FIG. 10, a terminal according to an embodiment of the present disclosure includes a processor 1030 for controlling the overall operation of the terminal, a ProSe service processor 1040, a transmission/reception unit 1010 including a transmission unit and a reception unit, and a memory 1020. ) Can be included. Of course, it is not limited to the above example, and the terminal may include more or fewer configurations than those shown in FIG. 10.

According to an embodiment of the present disclosure, the ProSe service processor 1040 may control a procedure for providing the aforementioned ProSe service. The ProSe service processor 1040 may exist independently as shown in FIG. 10, and the processor 1030 may perform the operation of the ProSe service processor 1040. The ProSe service processor 1040 may control other components of the terminal to provide ProSe service.

According to an embodiment of the present disclosure, the transceiver 1010 may transmit and receive signals with network entities, a base station, or other terminals. Signals transmitted and received with network entities, base stations, or other terminals may include control information and data. In addition, the transceiver 1010 receives a signal through a wireless channel and outputs it to the processor 1030 and the Prose service processor 1040, and transmits the signal output from the processor 1030 and the ProSe service processor 1040 through the wireless channel. Can be transmitted. In addition, the ProSe service processor 1040 may be an application processor (AP), a communication processor (CP), a circuit, an application-specific circuit, or at least one processor.

According to an embodiment of the present disclosure, the processor 1030 may control the terminal to perform any one of the above-described embodiments. Meanwhile, the processor 1030, the memory 1020, and the transmission/reception unit 1010 do not necessarily have to be implemented as separate modules, and may be implemented as a single component in the form of a single chip. In addition, the processor 1030, the ProSe service processor 1040, and the transmission/reception unit 1010 may be electrically connected. In addition, the processor 1030 may be an application processor (AP), a communication processor (CP), a circuit, an application-specific circuit, or at least one processor.

According to an embodiment of the present disclosure, the memory 1020 may store data such as a basic program, an application program, and setting information for an operation of a terminal. In particular, the memory 1020 provides stored data according to the request of the processor 1030 or the ProSe service processor 1040. The memory 1020 may be composed of a storage medium such as a ROM, a RAM, a hard disk, a CD-ROM, and a DVD, or a combination of storage media. Also, there may be a plurality of memories 1020. In addition, the processor 1030 or the ProSe service processor 1040 may perform the above-described embodiments based on a program for performing the above-described embodiments of the present disclosure stored in the memory 1020.

The methods according to the embodiments described in the claims or the specification of the present disclosure may be implemented in the form of hardware, software, or a combination of hardware and software.

When implemented in software, a computer-readable storage medium or computer program product storing one or more programs (software modules) may be provided. One or more programs stored in a computer-readable storage medium or a computer program product are configured to be executable by one or more processors in an electronic device (device). The one or more programs include instructions for causing the electronic device to execute methods according to embodiments described in the claims or specification of the present disclosure.

These programs (software modules, software) include random access memory, non-volatile memory including flash memory, read only memory (ROM), and electrically erasable programmable ROM. (EEPROM: Electrically Erasable Programmable Read Only Memory), magnetic disc storage device, Compact Disc-ROM (CD-ROM), Digital Versatile Discs (DVDs), or other types of It may be stored in an optical storage device or a magnetic cassette. Alternatively, it may be stored in a memory composed of a combination of some or all of them. In addition, a plurality of configuration memories may be included.

In addition, the program is accessed through a communication network such as Internet, Intranet, Local Area Network (LAN), Wide LAN (WLAN), or Storage Area Network (SAN), or a combination of these. It may be stored in an (access) attachable storage device. Such a storage device may access a device performing an embodiment of the present disclosure through an external port. In addition, a separate storage device on the communication network may access a device performing an embodiment of the present disclosure.

In the specific embodiments of the present disclosure described above, the constituent elements included in the present disclosure are expressed in the singular or plural according to the presented specific embodiments. However, the singular or plural expression is selected appropriately for the situation presented for convenience of description, and the present disclosure is not limited to the singular or plural constituent elements, and even constituent elements expressed in plural are composed of the singular or in the singular. Even the expressed constituent elements may be composed of pluralities.

On the other hand, the embodiments disclosed in the specification and drawings are only provided specific examples to easily describe the technical content of the present disclosure and to aid understanding of the present disclosure, and are not intended to limit the scope of the present disclosure. That is, it is apparent to those of ordinary skill in the technical field to which the present disclosure belongs that other modified examples based on the technical idea of the present disclosure can be implemented. In addition, each embodiment can be operated in combination with each other as needed. For example, portions of one embodiment of the present disclosure and another embodiment may be combined with each other. In addition, in the embodiments, other modified examples based on the technical idea of the above-described embodiment may be implemented in other systems, for example, an LTE system, a 5G or NR system, and the like.

Claims (20)

In a method for allocating sidelink resources for ProSe (Proximity-based Services) to a terminal by a base station in a wireless communication system,
Receiving a terminal context setting request message including information on at least one ProSe service provided to the terminal by an application function (AF) from an Access and Mobility Management Function (AMF);
Receiving, from the terminal, a sidelink resource request message for use of a ProSe service intended to be used by the terminal;
Identifying an Aggregated Maximum Bit Rate (PC5-AMBR) value corresponding to the ProSe service based on the information on the at least one ProSe service and the sidelink resource request message; And
And allocating a sidelink resource for the ProSe service to the terminal based on the identified PC5-AMBR value. The method of claim 1,
Information on the at least one ProSe service,
It is transmitted from the ProSe Function to the AMF through a ProSe service request message,
Including at least one ProSe service information transmitted through a ProSe communication request message from the AF to the ProSe Function and at least one ProSe service parameter determined based on the at least one ProSe service information by the ProSe Function, Way. The method of claim 2,
The at least one ProSe service information,
It includes at least one of service identification information, group identification information, radio resource requirement information, or identification information of the terminal for each of the at least one ProSe service,
The at least one ProSe service parameter,
The method comprising at least one PC5-AMBR value each corresponding to the at least one ProSe service. The method of claim 1,
Receiving a terminal context setting request message from the AMF,
Receiving a terminal context configuration request message including an updated ProSe service parameter for the at least one ProSe service,
The updated ProSe service parameter,
According to the ProSe Function, the method is updated based on at least one of a mobile communication service provider policy, a state of a network, subscription information of a terminal regarding a ProSe communication function, or the request of the AF. The method of claim 4,
The updated ProSe service parameter,
The method comprising at least one of a changed value of the PC5-AMBR value corresponding to the ProSe service to be used by the terminal or information for canceling authentication of the terminal regarding the ProSe service. The method of claim 5,
The above method,
The method further comprising the step of allocating the sidelink resource or rejecting the sidelink resource allocation of the terminal based on the changed PC5-AMBR value. In a method for transmitting information on a ProSe service from a ProSe (Proximity-based services) function to an Access and Mobility Management Function (AMF) in a wireless communication system,
Receiving a ProSe communication request message including information on at least one ProSe service from an application function (AF);
Each corresponding to the at least one ProSe service based on at least one of information on the at least one ProSe service, a mobile communication service provider policy, a network state, subscription information of a terminal regarding a ProSe communication function, or the request of the AF. Obtaining at least one ProSe service parameter; And
Including the step of transmitting a ProSe service request message including the at least one ProSe service parameter to the AMF,
The at least one ProSe service parameter includes at least one PC5-AMBR (Aggregated Maximum Bit Rate) value each corresponding to the at least one ProSe service. The method of claim 7,
Information on the at least one ProSe service,
It includes at least one of service identification information, group identification information, radio resource requirement information, or identification information of the terminal for each of the at least one ProSe service,
The at least one PC5-AMBR value is
A value determined based on at least one of information on the at least one ProSe service, a mobile communication service provider policy, a network state, or subscription information of a terminal related to a ProSe communication function, and a value for the at least one ProSe service received from the AF. It is at least one of a value included in the information or a value received from a policy control function (PCF). The method of claim 7,
The above method,
Further comprising the step of generating billing information for the terminal,
The step of generating billing information for the terminal,
Determining a reporting condition used for reporting resource usage information about the terminal;
Transmitting, to the base station, a report request message including a request for reporting the report condition and resource usage information;
Receiving, from the base station, the resource usage information report including information on a sidelink resource related to a ProSe service allocated to the terminal by the base station; And
And generating billing information for the terminal based on the received resource usage information report. The method of claim 9,
The above reporting conditions are:
A condition for the reporting period, a condition for setting to report the resource usage information of the terminal when the resource usage of the terminal is more than a preset threshold value, or a condition for setting to report the resource usage information of the terminal whenever the terminal uses a resource The method comprising at least one of the conditions. In a base station that allocates sidelink resources for ProSe (Proximity-based Services) to a terminal in a wireless communication system,
A transmission/reception unit; And
Including at least one processor,
The at least one processor,
Controls the transceiver to receive a terminal context setting request message including information on at least one ProSe service provided to the terminal by an application function (AF) from an Access and Mobility Management Function (AMF),
From the terminal, controlling the transmitting and receiving unit to receive a sidelink resource request message for the use of the ProSe service that the terminal intends to use,
Identifying an Aggregated Maximum Bit Rate (PC5-AMBR) value corresponding to the ProSe service based on the information on the at least one ProSe service and the sidelink resource request message,
The base station for allocating sidelink resources for the ProSe service to the terminal based on the identified PC5-AMBR value. The method of claim 11,
Information on the at least one ProSe service,
It is transmitted from the ProSe Function to the AMF through a ProSe service request message,
Including at least one ProSe service information transmitted through a ProSe communication request message from the AF to the ProSe Function and at least one ProSe service parameter determined based on the at least one ProSe service information by the ProSe Function, Base station. The method of claim 12,
The at least one ProSe service information,
It includes at least one of service identification information, group identification information, radio resource requirement information, or identification information of the terminal for each of the at least one ProSe service,
The at least one ProSe service parameter,
The base station including at least one PC5-AMBR value each corresponding to the at least one ProSe service. The method of claim 11,
The at least one processor,
Controlling the transceiver to receive a terminal context setting request message including an updated ProSe service parameter for the at least one ProSe service,
The updated ProSe service parameter,
The base station is updated based on at least one of a mobile communication service provider policy, a state of a network, subscription information of a terminal regarding a ProSe communication function, or the request of the AF by the ProSe Function. The method of claim 14,
The updated ProSe service parameter,
The base station comprising at least one of a changed value of the PC5-AMBR value corresponding to the ProSe service to be used by the terminal or information for canceling authentication of the terminal related to the ProSe service. The method of claim 15,
The at least one processor,
The base station for allocating the sidelink resource or rejecting the sidelink resource allocation of the terminal based on the changed PC5-AMBR value. In the ProSe (Proximity-based services) Function for delivering information on the ProSe service to the AMF (Access and Mobility Management Function) in a wireless communication system,
A transmission/reception unit; And
Including at least one processor,
The at least one processor,
Controlling the transceiver to receive a ProSe communication request message including information on at least one ProSe service from an AF (Application Function),
Each corresponding to the at least one ProSe service based on at least one of information on the at least one ProSe service, a mobile communication service provider policy, a network state, subscription information of a terminal regarding a ProSe communication function, or the request of the AF. Acquire at least one ProSe service parameter,
Controlling the transceiver to transmit a ProSe service request message including the at least one ProSe service parameter to the AMF,
The at least one ProSe service parameter includes at least one PC5-AMBR (Aggregated Maximum Bit Rate) value respectively corresponding to the at least one ProSe service, ProSe Function. The method of claim 17,
Information on the at least one ProSe service,
It includes at least one of service identification information, group identification information, radio resource requirement information, or identification information of the terminal for each of the at least one ProSe service,
The at least one PC5-AMBR value is
A value determined based on at least one of information on the at least one ProSe service, a mobile communication service provider policy, a network state, or subscription information of a terminal related to a ProSe communication function, and a value for the at least one ProSe service received from the AF. ProSe Function that is at least one of a value included in the information or a value received from a Policy Control Function (PCF). The method of claim 17,
The at least one processor,
Determine a reporting condition used for reporting resource usage information about the terminal,
To the base station, transmits a report request message including the report condition and resource usage information report request,
Receiving, from the base station, the resource usage information report including information on the sidelink resource related to the ProSe service allocated to the terminal by the base station,
ProSe Function for generating billing information for the terminal based on the received resource usage information report. The method of claim 19,
The above reporting conditions are:
A condition for the reporting period, a condition for setting to report the resource usage information of the terminal when the resource usage of the terminal is more than a preset threshold value, or a condition for setting to report the resource usage information of the terminal whenever the terminal uses a resource That includes at least one condition among the conditions, ProSe Function.

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