WO2022211603A1 - 무선 통신 시스템에서 백홀 정보 기반 세션 관리를 위한 방법 및 장치 - Google Patents
무선 통신 시스템에서 백홀 정보 기반 세션 관리를 위한 방법 및 장치 Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/12—Setup of transport tunnels
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
- H04W80/08—Upper layer protocols
- H04W80/10—Upper layer protocols adapted for application session management, e.g. SIP [Session Initiation Protocol]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/18—Selecting a network or a communication service
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
- H04W60/04—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration using triggered events
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/06—Airborne or Satellite Networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/16—Interfaces between hierarchically similar devices
- H04W92/24—Interfaces between hierarchically similar devices between backbone network devices
Definitions
- the present invention relates to a method and apparatus for session management based on backhaul information in a wireless communication system.
- the 5G communication system or the pre-5G communication system is called a 4G network after (Beyond 4G Network) communication system or an LTE (Long Term Evolution) system after (Post LTE) system.
- the 5G communication system is being considered for implementation in a very high frequency (mmWave) band (eg, such as a 60 gigabyte (60 GHz) band).
- mmWave very high frequency
- FD-MIMO Full Dimensional MIMO
- array antenna, analog beam-forming, and large scale antenna technologies are being discussed.
- an evolved small cell in the 5G communication system, an evolved small cell, an advanced small cell, a cloud radio access network (cloud radio access network, cloud RAN), an ultra-dense network (ultra-dense network) , Device to Device communication (D2D), wireless backhaul, moving network, cooperative communication, Coordinated Multi-Points (CoMP), and reception interference cancellation (interference cancellation) Technology development is underway.
- cloud radio access network cloud radio access network
- ultra-dense network ultra-dense network
- D2D Device to Device communication
- wireless backhaul moving network
- cooperative communication Coordinated Multi-Points (CoMP), and reception interference cancellation (interference cancellation) Technology development is underway.
- CoMP Coordinated Multi-Points
- FQAM Hybrid Frequency Shift Keying and Quadrature Amplitude Modulation
- SWSC Sliding Window Superposition Coding
- ACM Advanced Coding Modulation
- FBMC Filter Bank Multi Carrier
- NOMA Non Orthogonal Multiple Access
- SCMA Sparse Code Multiple Access
- the 5G system is considering support for various services compared to the existing 4G system.
- the most representative services include enhanced mobile broad band (eMBB), ultra-reliable and low latency communication (URLLC), and massive device-to-device communication service (mMTC). machine type communication), a next-generation broadcast service (eMBMS: evolved multimedia broadcast/multicast Service), and the like.
- eMBB enhanced mobile broad band
- URLLC ultra-reliable and low latency communication
- mMTC massive device-to-device communication service
- machine type communication eMBMS: evolved multimedia broadcast/multicast Service
- eMBMS evolved multimedia broadcast/multicast Service
- the system providing the URLLC service may be referred to as a URLLC system
- the system providing the eMBB service may be referred to as an eMBB system.
- service and system may be used interchangeably.
- the URLLC service is a service newly considered in the 5G system, unlike the existing 4G system, and has ultra-high reliability (eg, about 10-5 packet error rate) and low latency (eg, about 0.5 msec) requirement to be satisfied.
- the URLLC service may need to apply a shorter transmission time interval (TTI) than the eMBB service, and various operating methods are being considered using this.
- TTI transmission time interval
- IoT Internet of Things
- IoE Internet of Everything
- M2M sensing technology
- MTC Machine Type Communication
- IoT Internet Technology
- IoT is a field of smart home, smart building, smart city, smart car or connected car, smart grid, health care, smart home appliance, advanced medical service, etc. can be applied to
- 5G communication system technologies such as sensor network, machine to machine (M2M), and MTC (Machine Type Communication) are implemented by 5G communication technologies such as beamforming, MIMO, and array antenna.
- M2M machine to machine
- MTC Machine Type Communication
- 5G communication technologies such as beamforming, MIMO, and array antenna.
- cloud RAN cloud radio access network
- Satellite connections have a number of advantages, such as reducing the cost of establishing a wired link (such as installing embedded fiber optic cables).
- a phenomenon such as a variable network situation or a high latency may occur, and an additional mechanism to satisfy the quality of service (QoS) in the 5G system may be required.
- QoS quality of service
- a higher delay time may occur compared to using the terrestrial backhaul network in transmitting control signals and user data through the RAN and/or the core network installed on the ground. Due to such high latency, it may be necessary to change a session management method including selection of a network function (NF) for session management, selection of a QoS profile for policy and charging management, and the like.
- NF network function
- backhaul network-related information when configuring the RAN and core network It may be necessary to set in advance so that the change procedure required for session management can be initiated at the point in time when the backhaul network that actually causes high latency is used.
- the present invention for solving the above problems is a method of setting backhaul network-related information in the RAN and the core network, a method of determining a backhaul network to be used by the RAN and the core network when there is a request for a 5G network connection from the terminal, and the terminal
- a method for determining the characteristics of the backhaul network used when connecting to the RAN and the core network, a method for transmitting the characteristics of the backhaul network used by the terminal between NFs, and a method for performing session management related procedures based on the characteristics of the backhaul network used by the terminal includes
- FIG. 1 is a diagram illustrating a 5G system structure related to an embodiment of the present disclosure.
- FIG. 2 is a diagram illustrating a 5G system structure in a case in which various types of backhaul networks can be connected to one RAN and one UPF according to an embodiment of the present disclosure.
- FIG. 3 is a diagram illustrating a 5G system structure in a case in which multiple types of backhaul networks can be connected to one RAN and only one type of backhaul network can be connected to one UPF, according to an embodiment of the present disclosure.
- FIG. 4 is a diagram illustrating a 5G system structure when only one type of backhaul network connection is possible to one RAN and one UPF according to an embodiment of the present disclosure.
- FIG. 5 is a diagram illustrating a method of transmitting backhaul network-related information using an N4 association setup procedure initiated by an SMF, according to an embodiment of the present disclosure.
- FIG. 6 is a diagram illustrating a method of transmitting backhaul network-related information using an N4 association setup procedure initiated by UPF, according to an embodiment of the present disclosure.
- FIG. 7 is a diagram illustrating a method of transmitting backhaul network-related information using an N4 association update procedure initiated by an SMF, according to an embodiment of the present disclosure.
- FIG. 8 is a diagram illustrating a method of transmitting backhaul network-related information using an N4 association update procedure initiated by the UPF, according to an embodiment of the present disclosure.
- FIG. 9 is a diagram illustrating a method of transmitting backhaul network-related information using an N4 report procedure according to an embodiment of the present disclosure.
- FIG. 10 is a diagram illustrating an internal structure of a terminal according to an disclosed embodiment.
- FIG. 11 is a diagram illustrating an internal structure of a base station according to an disclosed embodiment.
- each block of the flowchart diagrams and combinations of the flowchart diagrams may be performed by computer program instructions.
- These computer program instructions may be embodied in a processor of a general purpose computer, special purpose computer, or other programmable data processing equipment, such that the instructions performed by the processor of the computer or other programmable data processing equipment are not described in the flowchart block(s). It creates a means to perform functions.
- These computer program instructions may also be stored in a computer-usable or computer-readable memory that may direct a computer or other programmable data processing equipment to implement a function in a particular manner, and thus the computer-usable or computer-readable memory.
- the instructions stored in the flowchart block(s) may produce an article of manufacture containing instruction means for performing the function described in the flowchart block(s).
- the computer program instructions may also be mounted on a computer or other programmable data processing equipment, such that a series of operational steps are performed on the computer or other programmable data processing equipment to create a computer-executed process to create a computer or other programmable data processing equipment. It is also possible that instructions for performing the processing equipment provide steps for performing the functions described in the flowchart block(s).
- each block may represent a module, segment, or portion of code that includes one or more executable instructions for executing specified logical function(s). It should also be noted that in some alternative implementations it is also possible for the functions recited in the blocks to occur out of order. For example, it is possible that two blocks shown in succession are actually performed substantially simultaneously, or that the blocks are sometimes performed in the reverse order according to the corresponding function.
- ' ⁇ unit' used in this embodiment means software or hardware components such as FPGA or ASIC, and ' ⁇ unit' performs certain roles.
- '-part' is not limited to software or hardware.
- ' ⁇ unit' may be configured to reside on an addressable storage medium or may be configured to refresh one or more processors.
- ' ⁇ ' denotes components such as software components, object-oriented software components, class components, and task components, and processes, functions, properties, and procedures. , subroutines, segments of program code, drivers, firmware, microcode, circuitry, data, databases, data structures, tables, arrays, and variables.
- components and ' ⁇ units' may be combined into a smaller number of components and ' ⁇ units' or further separated into additional components and ' ⁇ units'.
- components and ' ⁇ units' may be implemented to play one or more CPUs in a device or secure multimedia card.
- ' ⁇ unit' may include one or more processors.
- a term for identifying an access node used in the following description a term referring to network entities, a term referring to messages, a term referring to an interface between network objects, a term referring to various identification information and the like are exemplified for convenience of description. Accordingly, the present invention is not limited to the terms described below, and other terms referring to objects having equivalent technical meanings may be used.
- the present disclosure uses terms and names defined in 3GPP LTE (3rd Generation Partnership Project Long Term Evolution) standard and 3GPP 5G standard.
- 3GPP LTE 3rd Generation Partnership Project Long Term Evolution
- 3GPP 5G 3rd Generation Partnership Project 5G standard.
- the present invention is not limited by the above terms and names, and may be equally applied to systems conforming to other standards.
- FIG. 1 is a diagram illustrating a 5G system structure related to an embodiment of the present disclosure.
- a 5G system architecture may include various components (ie, a network function (NF)).
- AUSF authentication server function
- AMF access and mobility management function
- SMF session management function
- PCF policy control function
- AF application function
- UDM unified data management
- DN data network
- UPF user plane function
- UE user equipment
- a network slice selection function (Network Slice Selection Function, NSSF) device 109 and a network slice-specific authentication and authorization function (Network Slice Specific Authentication and Authorization Function, NSSAAF) device 111 is shown as an example, have.
- NSSF Network Slice Selection Function
- NSSAAF Network Slice Specific Authentication and Authorization Function
- Each of the devices illustrated in FIG. 1 may be implemented as one server or device, or may be implemented as a network slice instance.
- a network slice instance two or more identical or different network slice instances may be implemented in one server or device, or one network slice instance may be implemented in two or more servers or devices.
- Each NF can support the following functions.
- the AUSF 110 may process and store data for authentication of the UE.
- the AMF 103 may provide a function for access and mobility management in units of UEs, and may be basically connected to one AMF per one UE.
- the AMF 103 is a CN (core network) inter-node signaling for mobility between 3GPP access networks, a radio access network (RAN) CP interface (ie, N2 interface) termination (termination), NAS End of signaling (N1), NAS signaling security (NAS ciphering and integrity protection), AS security control, registration management (registration area management), connection management, idle mode UE accessibility (reachability) ) (including control and enforcement of paging retransmission), mobility management control (subscription and policy), intra-system mobility and inter-system mobility support, support of network slicing, SMF selection, lawful intercept ( AMF event and interface to the LI system), session management (SM) message delivery between the UE and SMF, a transparent proxy for SM message routing, access authentication (access authentication), Access authorization including roaming permission check, providing delivery of SMS messages between UE and Short
- the DN 112 may mean, for example, an operator service, Internet access, or a third party service.
- the DN 112 may transmit a downlink protocol data unit (PDU) to the UPF 105 or may receive a PDU transmitted from the UE 101 through the UPF 105 .
- PDU downlink protocol data unit
- the PCF 107 may receive information on packet flow from an application server and provide a function of determining policies such as mobility management and session management.
- the PCF 107 supports a unified policy framework for controlling network behavior, provides policy rules so that control plane function(s) (eg, AMF, SMF, etc.) can enforce policy rules, users It can support functions such as implementing a front end to access relevant subscription information for policy making in a user data repository (UDR).
- control plane function(s) eg, AMF, SMF, etc.
- UDR user data repository
- the SMF 104 provides a session management function, and when the UE has a plurality of sessions, it may be managed by a different SMF for each session. Specifically, the SMF 104 is responsible for session management (eg, session establishment, modification, and termination including maintaining a tunnel between UPF and AN nodes), UE IP address assignment and management (optionally including authentication), UP Selection and control of functions, establishing traffic steering to route traffic to appropriate destinations in UPF, terminating interfaces towards policy control functions, enforcing the control portion of policies and quality of service (QoS) , lawful intercept (for SM events and interfaces to the LI system), termination of the SM part of the NAS message, downlink data notification, initiator of AN specific SM information (via AMF) It can support functions such as forwarding to AN through N2), determining the SSC mode of a session, and a roaming function. As described above, some function(s) or all functions of the SMF 104 may be supported within a single SMF instance operating as one S
- UDM 106 may store a user's subscription data, policy data, and the like.
- UDM 106 may include two parts: an application front end (FE) (not shown) and a user data repository (UDR) (not shown).
- FE application front end
- UDR user data repository
- the FE may include a UDM FE in charge of location management, subscription management, credential processing, and the like, and a PCF-FE in charge of policy control.
- the UDR may store the data required for the functions provided by the UDM-FE and the policy profile required by the PCF.
- Data stored in the UDR may include user subscription data and policy data including subscription identifiers, security credentials, access and mobility related subscription data, and session related subscription data.
- UDM-FE can access subscription information stored in UDR and support functions such as authentication credential processing, user identification handling, access authentication, registration/mobility management, subscription management, SMS management, etc. can
- the UPF 105 transmits the downlink PDU received from the DN 112 to the UE 101 via the (R) AN 102, and is received from the UE 101 via the (R) AN 102 .
- One uplink PDU may be delivered to the DN 112 .
- the UPF 105 is an anchor point for intra/inter RAT mobility, an external PDU session point of the interconnect to a data network, packet routing and forwarding, and packet inspection ( inspection) and user plane part of policy rule enforcement, lawful intercept, traffic usage reporting, uplink classifier to support routing of traffic flows to data networks, multi-homed Branching point to support a PDU session, QoS handling for the user plane (eg, packet filtering, gating, uplink / downlink rate enforcement), uplink traffic verification (service data) Flow (SDF mapping between service data flow, SDF and QoS flow), uplink and downlink transport level packet marking, downlink packet buffering, and downlink data notification triggering functions may be supported. Some function(s) or all functions of the UPF 105 may be supported within a single UPF instance operating as one UPF.
- AF 108 supports 3GPP functions for service provision (eg, application impact on traffic routing, access to network capability exposure, interaction with policy framework for policy control, etc.) Interoperable with the core network.
- service provision eg, application impact on traffic routing, access to network capability exposure, interaction with policy framework for policy control, etc.
- R AN 102 supports both evolved E-UTRA (E-UTRA), an evolved version of 4G radio access technology, and new radio access technology (NR) (eg, gNB).
- E-UTRA evolved E-UTRA
- NR new radio access technology
- a new radio access network may be generically referred to.
- radio resource management i.e., radio bearer control, radio admission control, connection mobility control, and dynamic resource allocation to the UE in uplink/downlink.
- Allocation dynamic allocation of resources
- IP internet protocol
- encryption encryption
- integrity protection integrity protection
- AMF integrity protection
- the UE 101 may mean user equipment.
- the user equipment may be referred to in terms of a terminal, mobile equipment (ME), mobile station (MS), and the like.
- the user device may be a portable device such as a laptop computer, a mobile phone, a personal digital assistant (PDA), a smart phone, a multimedia device, etc., or may be a non-portable device such as a personal computer (PC) or in-vehicle device. have.
- UE user equipment
- UE user equipment
- NEF network exposure function
- NRF NF repository function
- the NRF (not shown in FIG. 1 ) may support a service discovery function.
- the NRF may support a service discovery function.
- information on the second NF instance discovered after performing the second NF discovery operation may be provided to the first NF instance. It can also keep available NF instances and the services they support.
- FIG. 1 illustrates a reference model for a case in which the UE accesses one DN using one PDU session for convenience of description, but the present disclosure is not limited thereto.
- the UE 101 may access two (ie, local and central) data networks simultaneously using multiple PDU sessions.
- two SMFs may be selected for different PDU sessions.
- each SMF may have the ability to control both the local UPF and the central UPF within the PDU session.
- the UE 101 may simultaneously access two (ie, regional and central) data networks provided within a single PDU session.
- a conceptual link connecting NFs in the 5G system is defined as a reference point.
- the following illustrates a reference point included in the 5G system architecture represented in FIG. 1 .
- - N15 In the case of a non-roaming scenario, a reference point between the PCF and the AMF, in the case of a roaming scenario, a reference point between the PCF and the AMF in the visited network
- the terminal may mean the UE 101, and the terms UE or terminal may be used interchangeably. In this case, it should be understood as the UE 101 unless the UE is additionally defined.
- the terminal establishes a session by accessing a data network (eg, a network providing an Internet service) through the 5G system, and each data network can be distinguished by using an identifier called a DNN (Data Network Name).
- the DNN may be used to determine NFs related to a user plane, an interface between NFs, operator policies, and the like when a UE connects a session with a network system.
- the DNN may be used, for example, to select SMF and UPF(s) for a PDU session, and may be used to select an interface (eg, N6 interface)(s) between the data network and UPF for a PDU session.
- the DNN may be used to determine a policy of a mobile communication service provider to be applied to a PDU session.
- FIGS. 2 to 4 are diagrams illustrating the structure of a 5G system including a backhaul network according to various embodiments of the present disclosure. Based on the RAN and the UPF, it may be divided into FIGS. 2 to 4 according to whether only one type of backhaul network connection is possible or whether multiple types of backhaul network connection is possible.
- the RAN and the core network receive a 5G network connection request from the UE according to the network setting method of the 5G network operator, a method of determining the type of a backhaul network suitable for the UE and a method of determining the type of a backhaul network used by the UE This may vary.
- FIG. 2 is a diagram illustrating a 5G system structure in a case in which various types of backhaul networks can be connected to one RAN and one UPF according to an embodiment of the present disclosure.
- a backhaul network that can be used between the RAN 202 and the AMF 203 and the RAN 202 and the UPF 205
- a satellite backhaul network (satellite backhaul) 209 and terrestrial resources are shown.
- a used terrestrial backhaul network (terrestrial backhaul) 210 is shown illustratively.
- a control plane connection 211 through a satellite backhaul, a user plane connection 212 through a satellite backhaul, a control plane connection 213 through a terrestrial backhaul, a user plane connection 214 through a terrestrial backhaul, and SMF Control plane connection 215 between 204 and UPF 205 and user plane connection 216 between SMF 204 and UPF 205 are illustratively shown.
- the RAN 202 may select a backhaul network for control plane connection using the N2 interface between the AMF 203 and the RAN 202 when receiving a registration request from the UE 201 .
- the RAN 202 selects a backhaul network, it may refer to at least one of the information of (a) to (g) below.
- the RAN 202 may transmit the registration request message received from the UE 201 to the AMF 203 through the selected backhaul network.
- the type of the used backhaul network can be determined by using the Transport Network Layer (TNL) association identifier to which the message is transmitted. have.
- the mapping information between the TNL association identifier and the type of the backhaul network may be determined by an operator policy.
- the AMF 203 may determine the type of the used backhaul network by referring to at least one of the following information A to D.
- the mapping information of the identifier of the RAN 203 of D. and the type of the backhaul network may be determined by the policy of the operator.
- the AMF 203 may use the backhaul network selected by the RAN 202 as it is. Alternatively, the AMF 203 may change to another backhaul network if there is another more suitable backhaul network when it is determined using at least one of the information of (h) to (j) below. For example, although the RAN 201 has selected the control plane connection 211 using the satellite backhaul, it is determined that the control plane connection 213 using the terrestrial backhaul is more suitable at the time when the AMF 203 receives the registration request message.
- the AMF 203 connects the control plane using the terrestrial backhaul 213 can be changed to
- RAN 202 identifier eg gNB ID
- the AMF 203 may transmit a control signal to the RAN 202 through the finally determined backhaul network.
- the RAN 202 may recognize the finally selected backhaul network using the TNL association identifier to which the control signal is transmitted.
- the SMF 204 When the AMF 203 receives a PDU Session Establishment request from the UE 201 after the registration procedure is completed, the SMF 204 considers the type of backhaul network selected in the control plane through the N2 interface. ) can be selected.
- the AMF 203 may transmit the selected backhaul network type to the control plane through the N2 interface to the SMF 204 .
- the SMF 204 may select the UPF 205 in consideration of the type of backhaul network selected in the control plane through the N2 interface and whether the UPF 205 supports one or more types of backhaul networks. 2 illustrates a case in which the UPF 205 supporting one or more types of backhaul networks is selected.
- the UPF 205 may set different ranges of UE IP addresses for user plane connection using the N3 interface according to the type of the backhaul network. For example, if the UPF 205 has addresses 1 to 10 as IP addresses that can be assigned as UE IP addresses, addresses 1 to 3 are user planes using satellite backhaul, addresses 4 to 10 can be set so that it can be allocated for the user plane using the terrestrial backhaul. Of course, it is not limited to the above example, and such a determination may be determined by an operator policy. As a format indicating the range of the UE IP address, IP address pool information, network instance, and the like may be used.
- Network Instance refers to a domain identifier that classifies a network domain or service domain according to network configuration, services provided to users, and subscriber information, and controls the flow of data traffic corresponding to each domain.
- a method of defining a domain may be determined by an operator policy or a policy of a network equipment configuration.
- a method of defining an IP address pool that can be assigned to each domain for traffic detection and routing may be included.
- Network Instance can be managed independently in UPF, PCF, and SMF. As an example, the UPF may manage to use different Network Instances for different backhaul networks. Of course, it is not limited to the above example.
- the range of the UE IP address selected by the UPF 205 for PDU session establishment and/or the information related to the user plane connection using the N3 interface is the backhaul network selected as the control plane through the SMF 204 and the AMF 203. through the RAN 202 .
- the RAN 202 may define a range of N3 AN Tunnel Information for a user plane connection using an N3 interface differently according to the type of the backhaul network. For example, if the RAN has addresses 1 to 10 as IP addresses that can be assigned as N3 AN Tunnel Information, addresses 1 to 3 are user plane using satellite backhaul, and addresses 4 to 10 are terrestrial. It can be set to be allocated for the user plane using the backhaul. Of course, it is not limited to the above example, and such a determination may be determined by an operator policy. As a format indicating the range of the N3 AN Tunnel Information, IP address Pool Information, Network Instance, etc. may be used.
- the RAN 202 may refer to at least one of the following information (k) and (l) in determining the type of the backhaul network to be used for the user plane.
- the range of the N3 AN Tunnel Information may be transmitted to the SMF 204 and the UPF 205 through the control plane backhaul network.
- FIG. 3 is a diagram illustrating a 5G system structure in a case in which multiple types of backhaul networks can be connected to one RAN and only one type of backhaul network can be connected to one UPF, according to an embodiment of the present disclosure.
- the backhaul network 309 and the terrestrial backhaul network 310 using the satellite the UPF 305-1 that can communicate with the RAN 302 through the satellite backhaul network, and the RAN 302 through the terrestrial backhaul network
- a UPF 305-2 capable of communicating is shown as an example.
- a control plane connection 315-2 and a user plane connection 316-2 between 2) and the SMF 304 are illustratively shown.
- a method of determining the type of the backhaul network in the 5G system structure of FIG. 3 will be described based on the above-described contents in steps 1 to 14 described in relation to FIG. 2 .
- step 3 is a case in which the SMF 304 selects the UPF supporting the type of the backhaul network in consideration of the type of the backhaul network selected in the control plane through the N2 interface when the SMF 304 selects the UPF in step 9 of FIG. indicates
- the SMF 304 supports the satellite backhaul network UPF 305- 1) can be selected.
- the SMF 304 may deliver the information received from the UPF and the range of N3 CN Tunnel Information to the RAN 302 through the backhaul network selected as the control plane through the AMF 303 .
- the SMF 304 may set the range of the N3 CN Tunnel Information differently according to the type of the backhaul network supported by the UPF or the UPF ID. For example, in the description using step 9 of FIG.
- the SMF 304 may allocate N3 CN Tunnel Information according to the number of types of backhaul networks supported by the UPF. You can determine the range of IP addresses. This decision may be determined by operator policy. As a format indicating the range of the N3 CN Tunnel Information, IP address Pool Information, Network Instance, etc. may be used.
- the RAN 302 may refer to at least one of the following information (m) to (o) in determining the type of the backhaul network used for the user plane.
- FIG. 4 is a diagram illustrating a 5G system structure when only one type of backhaul network connection is possible to one RAN and one UPF according to an embodiment of the present disclosure.
- a backhaul network 409 and a terrestrial backhaul network 410 using a satellite a RAN 402-1 supporting communication through a satellite backhaul, a RAN 402-2 supporting communication through a terrestrial backhaul, and a satellite UPF (405-1) supporting communication via backhaul, UPF (405-2) supporting communication via terrestrial backhaul, control plane connection (411) and user plane connection (412) via satellite backhaul, terrestrial backhaul Control plane connection 413 and user plane connection 414 via satellite backhaul, control plane connection 415-1 and user plane connection 416 between UPF 405-1 and SMF 404 supporting communication via satellite backhaul -1), a control plane connection 415-2 and a user plane connection 416-2 between the UPF 405-2 and the SMF 404 supporting communication over a terrestrial backhaul are illustratively shown.
- the control plane connection using the N2 interface between the AMF 403 and the RAN 402 In selecting a backhaul network for , at least one of the information of (a) to (g) described above may be referred to.
- the RAN 402 selects a backhaul network different from the backhaul network it supports, the RAN 402 may hand over the request of the UE 401 to the RAN supporting the corresponding backhaul network.
- the UE 401 transmits a registration request message to the RAN 402-1 supporting the satellite backhaul network, but at the time the RAN 402-1 receives the UE's request, the satellite backhaul network 409 If it is determined that the control plane connection 411 through the terrestrial backhaul network 410 is congested, a handover procedure may be initiated to another RAN 402-2 to use the terrestrial backhaul network 410 .
- the RAN 402 may hand over the UE's request to another RAN that supports the same type of backhaul network as the backhaul network it supports. The selection process of the backhaul network of the RAN 402 may be omitted. In this case, the RAN 402 may use the backhaul network supported by it as it is.
- the RAN 402 may transmit the registration request message received from the UE 401 to the AMF 403 through the selected backhaul network.
- the RAN 402 may determine the type of the backhaul network it supports by using the TNL association identifier.
- the mapping information between the TNL association identifier and the type of the backhaul network may be determined by the operator policy.
- the AMF 403 when the AMF 403 determines to change to another backhaul network in step 4 of FIG. 2 , the AMF 403 sends a control signal to the RAN 402 supporting the corresponding backhaul network through the finally determined backhaul network. can be sent.
- FIG. 5 is a diagram illustrating a method of transmitting backhaul network-related information using an N4 association setup procedure initiated by an SMF, according to an embodiment of the present disclosure.
- the N4 association setup procedure refers to a process of exchanging functions and node characteristics that the SMF and UPF can support, respectively, before establishing an N4 session using resources between the control plane and the user plane between the SMF and the UPF.
- the SMF 501 may request an N4 association setup from the UPF 502 .
- the SMF 501 may perform at least some of the following operations A to F.
- the SMF 501 may transmit the type of the backhaul network used for the control plane through the N2 interface to the UPF 502 .
- the SMF 501 may request from the UPF 502 the type of backhaul network supported by the UPF 502 and other information related to the backhaul network.
- the SMF 501 tells the UPF 502 whether to detect the existence of a backhaul network between the UPF and the RAN, whether to detect the existence of a non-terrestrial backhaul network, the type of detected backhaul network, and other detected You can request information related to the backhaul network.
- the SMF 501 may request the UPF 502 for information on Network Instances supported by the UPF 502 and other information related to Network Instances.
- the SMF 501 may request the UPF 502 for information on the range of IP addresses that the UPF 502 can allocate to the UE.
- the information on the range of the IP address may include a range of allocable IP addresses for each type of backhaul network, a range of allocable IP addresses for each network instance, and/or a range of allocable IP addresses for each S-NSSAI.
- the SMF 501 may request QoS information for the user plane paths managed by the UPF 502 from the UPF 502 .
- the user plane path may include a general packet radio system (GPRS) tunneling protocol user plane (GTP-U) path.
- GPRS general packet radio system
- GTP-U general packet radio system tunneling protocol user plane
- the SMF 501 may provide the following indication information i to iii as information indicating the target of the requested QoS information.
- the initiation condition may include a threshold value, a measurement period, and the like.
- a target to which the threshold value is applied may be included.
- Applications may include average packet delay time, minimum packet delay time, and maximum packet delay time.
- the UPF 502 may transmit the information requested in step 1 to the SMF 501 .
- the UPF 502 may provide all of the requested information, or only the available information.
- the UPF 502 when detecting the existence of a backhaul network between the UPF and the RAN, the detected fact, the type of the detected backhaul network, and other information related to the characteristics of the backhaul network, information on the Network Instance that the UPF 502 can support, and other Network Instances Related information, information on the range of IP addresses that the UPF 502 can allocate to the UE, and/or QoS information on user plane paths managed by the UPF 502 may be delivered to the SMF 501 .
- FIG. 6 is a diagram illustrating a method of transmitting backhaul network-related information using an N4 association setup procedure initiated by UPF, according to an embodiment of the present disclosure.
- the UPF 601 may request an N4 association setup from the SMF 602 .
- the UPF 601 may request from the SMF 602 the type of backhaul network used in the control plane through the N2 interface and other information.
- the UPF 601 may provide at least one of the following information of G to L when transmitting the N4 association setup request.
- the UPF 601 detects the existence of a backhaul network between the UPF and the RAN, whether it detects the existence of a non-terrestrial backhaul network, the type of detected backhaul network, and other information related to the detected backhaul network
- the information on the range of IP address may include a range of allocable IP addresses for each type of backhaul network, a range of allocable IP addresses for each network instance, and/or a range of allocable IP addresses for each S-NSSAI.
- the user plane path may include a GTP-U path.
- the SMF 602 may respond to the N4 association setup request to the UPF 601 .
- the SMF 602 may provide the type and other information of the backhaul network used in the control plane through the N2 interface even if it is not a target of the request received from the UPF 601 in step 1 above.
- FIG. 7 is a diagram illustrating a method of transmitting backhaul network-related information using an N4 association update procedure initiated by an SMF, according to an embodiment of the present disclosure.
- the N4 association update procedure refers to a process of exchanging the changed information when there is a change in the functions, node characteristics, and available resources that the SMF or UPF can support for the N4 association established between the SMF and the UPF.
- the SMF 701 may request an N4 association update from the UPF 702 .
- the SMF 701 may perform at least one of operations A to F described with reference to FIG. 5 .
- the SMF 701 may provide or request all information or only changed information when performing at least one of the operations A to F.
- the UPF 702 may transmit the information requested in step 1 to the SMF 701 . In one embodiment, even if the UPF 702 is not a target of the request received from the SMF 701 in step 1, the type of backhaul network supported by the UPF 702 and other information related to the backhaul network, the UPF is sent to the UE.
- the UPF 702 may deliver information on a supportable Network Instance and other Network Instance-related information and/or QoS information on user plane paths managed by the UPF 702 to the SMF 701 .
- the UPF 702 may provide all of the information or only the changed information.
- FIG. 8 is a diagram illustrating a method of transmitting backhaul network-related information using an N4 association update procedure initiated by the UPF, according to an embodiment of the present disclosure.
- the UPF 801 may request an N4 association update from the SMF 802 .
- the UPF 801 may request the SMF 802 for the type of backhaul network used in the control plane through the N2 interface and other information.
- the UPF 801 may provide or request the entire information to the SMF 802, or may provide or request only the changed information.
- the UPF 801 when transmitting the request, may provide at least one of information G to L described with reference to FIG. 6 .
- the SMF 802 may respond to the N4 association update request to the UPF 801 .
- the SMF 802 may provide the type and other information of the backhaul network used in the control plane through the N2 interface even if it is not a target of the request received from the UPF 801 in step 1 above.
- the SMF 802 may provide all of the information, or only the changed information.
- FIG. 9 is a diagram illustrating a method of transmitting backhaul network-related information using an N4 report procedure according to an embodiment of the present disclosure.
- the N4 report procedure refers to a process in which the UPF provides information that is not limited to a specific N4 session established between the SMF and the UPF to the SMF.
- Examples of information not limited to a specific N4 session include the following. If the user plane connection path managed by UPF (eg, connection path using GTP-U protocol, GTP-U path) becomes unusable due to a problem, all other nodes connected through that path (eg, GTP-U path) For example, it is possible to affect all N4 session management established between the RAN or other UPF) and the UPF. Therefore, in this case, UPF collects information that can identify the user plane connection path where the problem occurs, information related to the problem, information that can identify the affected N4 session, and information that can identify the affected node. You can report it to the SMF.
- UPF collects information that can identify the user plane connection path where the problem occurs, information related to the problem, information that can identify the affected N4 session, and information that can identify the affected node. You can report
- step 1 when the UPF 901 recognizes that an event has occurred in information that is not limited to a specific N4 session, the N4 Report including the UPF ID, the event occurred and the status to the SMF 902 message can be sent.
- the above-mentioned events include a change in the backhaul network used in the user plane managed by UPF, a change in the backhaul network type, a change in other backhaul network-related information, availability of a backhaul network, average packet delay time in backhaul network section, minimum packet Abnormal change in latency, maximum packet delay time, change of IP address range that UPF can allocate, information of Network Instance that UPF can support and other information related to Network Instance, change of information of Network Instance that UPF supports, and At least one of other network instance-related information changes may be included. Of course, it is not limited to the above example.
- the SMF 902 may notify the UPF 901 that the N4 report message of step 1 has been received.
- FIG. 10 is a diagram illustrating an internal structure of a terminal according to an disclosed embodiment.
- the terminal 1000 may include a processor 1010 , a transceiver 1020 , and a memory 1030 .
- the processor 1010 , the transceiver 1020 , and the memory 1030 of the terminal may operate.
- the components of the terminal are not limited to the above-described example.
- the terminal may include more or fewer components than the aforementioned components.
- the processor 1010 , the transceiver 1020 , and the memory 1030 may be implemented in the form of one chip.
- the processor 1010 may control a series of processes so that the terminal can operate according to the above-described embodiment.
- the processor 1010 may perform only some operations of the above-described embodiments, but is not limited thereto, and the processor 1010 may control all processes so that the terminal may operate according to all or part of the above-described embodiments. .
- the transceiver 1020 may transmit/receive a signal to/from the base station.
- the signal may include control information and data.
- the transceiver 1020 may include an RF transmitter for up-converting and amplifying the frequency of a transmitted signal, and an RF receiver for low-noise amplifying and down-converting a received signal.
- this is only an embodiment of the transceiver 1020 , and components of the transceiver 1020 are not limited to the RF transmitter and the RF receiver.
- the transceiver 1020 may receive a signal through a wireless channel, output it to the processor 1010 , and transmit a signal output from the processor 1010 through a wireless channel.
- the memory 1030 may store programs and data necessary for the operation of the terminal. Also, the memory 1030 may store control information or data included in a signal obtained from the terminal.
- the memory 1030 may be configured as a storage medium or a combination of storage media such as ROM, RAM, hard disk, CD-ROM, and DVD. Also, the memory 1030 may include a plurality of memories.
- FIG. 11 is a diagram illustrating an internal structure of a base station according to an disclosed embodiment.
- the base station may include a processor 1110 , a transceiver 1120 , and a memory 1130 .
- the processor 1110 , the transceiver 1120 , and the memory 1130 of the base station may operate.
- the components of the base station are not limited to the above-described example.
- the base station may include more or fewer components than the above-described components.
- the processor 1110 , the transceiver 1120 , and the memory 1130 may be implemented in the form of one chip.
- the base station may include an entity included in the base station and the core network, and may include, for example, AMF, SMF, UPF, and the like.
- the processor 1110 may control a series of processes so that the base station can operate according to the above-described embodiment.
- the processor 1110 may perform only some operations of the above-described embodiments, but is not limited thereto, and the processor 1110 may control all processes so that the base station can operate according to all or part of the above-described embodiments. .
- the transceiver 1120 may transmit/receive a signal to/from the terminal.
- the signal may include control information and data.
- the transceiver 1120 may include an RF transmitter that up-converts and amplifies the frequency of a transmitted signal, and an RF receiver that low-noise amplifies and down-converts a received signal.
- this is only an embodiment of the transceiver 1120 , and components of the transceiver 1120 are not limited to the RF transmitter and the RF receiver.
- the transceiver 1120 may receive a signal through a wireless channel, output it to the processor 1110 , and transmit a signal output from the processor 1110 through a wireless channel.
- the memory 1130 may store programs and data necessary for the operation of the base station. Also, the memory 1130 may store control information or data included in a signal obtained from the base station.
- the memory 1130 may be configured as a storage medium or a combination of storage media, such as ROM, RAM, hard disk, CD-ROM, and DVD. Also, the memory 1130 may include a plurality of memories. In an embodiment, the memory 1130 may store a program for session management based on backhaul information.
- backhaul network related information is preset during network configuration in the 3GPP 5G system to determine the backhaul network to be used by the RAN and the core network when there is a request for a 5G network connection from a user equipment (UE) And a method for determining is provided.
- UE user equipment
- a method for determining the characteristics of a backhaul network used when a UE is connected to a RAN and a core network in a 3GPP 5G system is provided, and an SMF suitable for session management based on the determination is provided. And or a method of selecting a UPF is provided.
- a method of exchanging characteristic information of a backhaul network used when a UE is connected to a RAN and a core network in a 3GPP 5G system between NFs performing a session management procedure, and a backhaul network used by the UE A method for performing procedures necessary for session management, including selection of a Qos profile for policy and billing management, and selection of a user data transmission path, is provided based on the characteristic information of .
- a computer-readable storage medium storing one or more programs (software modules) may be provided.
- One or more programs stored in the computer-readable storage medium are configured to be executable by one or more processors in an electronic device (device).
- the one or more programs include instructions for causing an electronic device to execute methods according to embodiments described in a claim or specification of the present disclosure.
- Such programs include random access memory, non-volatile memory including flash memory, read only memory (ROM), 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 any other form 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 thereof. In addition, a plurality of each configuration memory may be included.
- the program accesses through a communication network composed of a communication network such as the Internet, Intranet, Local Area Network (LAN), Wide LAN (WLAN), or Storage Area Network (SAN), or a combination thereof. It may be stored in an attachable storage device that can be accessed. Such a storage device may be connected to a device implementing an embodiment of the present disclosure through an external port. In addition, a separate storage device on the communication network may be connected to the device implementing the embodiment of the present disclosure.
- a communication network such as the Internet, Intranet, Local Area Network (LAN), Wide LAN (WLAN), or Storage Area Network (SAN), or a combination thereof. It may be stored in an attachable storage device that can be accessed.
- Such a storage device may be connected to a device implementing an embodiment of the present disclosure through an external port.
- a separate storage device on the communication network may be connected to the device implementing the embodiment of the present disclosure.
- each of the above embodiments may be operated in combination with each other as needed.
- the base station and the terminal may be operated by combining parts of one embodiment and another embodiment of the present disclosure with each other.
- other modifications based on the technical idea of the above embodiments may be implemented in various systems such as FDD LTE system, TDD LTE system, 5G or NR system.
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Abstract
Description
Claims (15)
- 복수의 백홀 네트워크(backhaul network)들을 사용 가능한 무선 통신 시스템에서, AMF(access and management function) 네트워크 엔티티의 동작 방법에 있어서,RAN(radio access network)으로부터, 사용자 단말의 등록 요청 메시지를 수신하는 단계;상기 수신된 등록 요청 메시지에 기초하여, 상기 복수의 백홀 네트워크들 중 상기 RAN이 제어 평면 연결을 위해 사용한 백홀 네트워크를 식별하는 단계; 및상기 식별된 백홀 네트워크에 기초하여, 제어 평면 연결을 위해 사용할 백홀 네트워크를 결정하는 단계;를 포함하는, 방법.
- 제1항에 있어서,상기 RAN이 제어 평면 연결을 위해 사용한 백홀 네트워크를 식별하는 단계는,상기 등록 요청 메시지가 전송된 TNL(Transport Network Layer) association 식별자 또는 상기 RAN의 식별자 중 적어도 하나를 이용하여, 상기 RAN이 제어 평면 연결을 위해 사용한 백홀 네트워크를 식별하는 단계를 포함하는, 방법.
- 제2항에 있어서,상기 RAN이 제어 평면 연결을 위해 사용한 백홀 네트워크를 식별하는 단계는,TNL association 식별자 또는 RAN의 식별자와 백홀 네트워크 간의 미리 지정된 매핑 정보에 기초하여, 상기 RAN이 제어 평면 연결을 위해 사용한 백홀 네트워크를 식별하는 단계를 포함하는, 방법.
- 제1항에 있어서,상기 제어 평면 연결을 위해 사용할 백홀 네트워크를 결정하는 단계는,상기 RAN이 제어 평면 연결을 위해 사용한 백홀 네트워크를 그대로 사용하기로 결정하는 단계;를 포함하는, 방법.
- 제1항에 있어서,상기 복수의 백홀 네트워크들은, 적어도 하나의 지상 네트워크 및 적어도 하나의 위성 네트워크를 포함하는, 방법.
- 제1항에 있어서,SMF(session management function) 네트워크 엔티티에게, 상기 결정된 제어 평면 연결을 위해 사용할 백홀 네트워크에 관한 정보를 전송하는 단계를 더 포함하는, 방법.
- 복수의 백홀 네트워크(backhaul network)들을 사용 가능한 무선 통신 시스템에서, SMF(session management function) 네트워크 엔티티의 동작 방법에 있어서,상기 복수의 백홀 네트워크들 중, AMF(access and management function) 네트워크 엔티티가 제어 평면 연결을 위해 사용한 백홀 네트워크에 관한 정보를 획득하는 단계;상기 제어 평면 연결을 위해 사용한 백홀 네트워크에 관한 정보에 기초하여, 상기 복수의 백홀 네트워크들 중, 사용자 평면 연결을 위해 사용할 백홀 네트워크를 결정하는 단계;상기 결정된 사용자 평면 연결을 위해 사용할 백홀 네트워크에 관한 정보를 RAN(radio access network)으로 전송하는 단계;를 포함하는, 방법.
- 제7항에 있어서,상기 사용자 평면 연결을 위해 사용할 백홀 네트워크를 결정하는 단계는,상기 제어 평면 연결을 위해 사용한 백홀 네트워크를 사용자 평면 연결을 위해 사용할 백홀 네트워크로 결정하는 단계를 포함하는, 방법.
- 제8항에 있어서,상기 사용자 평면 연결을 위해 사용할 백홀 네트워크를 결정하는 단계는,상기 결정된 사용자 평면 연결을 위해 사용할 백홀 네트워트에 기초하여, 상기 사용자 평면 연결을 위해 사용할 UPF(User Plane Function) 네트워트 엔티티를 선택하는 단계를 더 포함하는, 방법.
- 제7항에 있어서,상기 사용자 평면 연결을 위해 사용할 백홀 네트워크에 관한 정보를 RAN으로 전송하는 단계는,상기 사용자 평면 연결을 위해 사용할 백홀 네트워크에 기초하여, 상기 RAN이 사용자 평면 연결을 위하여 사용자 단말에 할당할 수 있는 IP address 범위를 결정하는 단계;상기 결정된 IP address 범위에 관한 정보를 상기 RAN으로 전송하는 단계;를 포함하는, 방법.
- 제10항에 있어서,상기 RAN이 사용자 평면 연결을 위하여 사용자 단말에 할당할 수 있는 IP address 범위를 결정하는 단계는,사용자 단말에 할당할 수 있는 IP address 범위와 백홀 네트워크 간의 미리 지정된 매핑 정보에 기초하여, 상기 RAN이 사용자 평면 연결을 위하여 사용자 단말에 할당할 수 있는 IP address 범위를 결정하는 단계를 포함하는, 방법.
- 제7항에 있어서,상기 사용자 평면 연결을 위해 사용할 백홀 네트워크에 관한 정보를 RAN으로 전송하는 단계는,상기 사용자 평면 연결을 위해 사용할 백홀 네트워크에 기초하여, 상기 RAN이 사용자 평면 연결에 사용할 네트워크 인스턴스를 결정하는 단계;상기 결정된 네트워크 인스턴스에 관한 정보를 상기 RAN으로 전송하는 단계;를 포함하는, 방법.
- 제12항에 있어서,상기 RAN이 사용자 평면 연결에 사용할 네트워크 인스턴스를 결정하는 단계는,사용자 평면 연결에 사용할 네트워크 인스턴스와 백홀 네트워크 간의 미리 지정된 매핑 정보에 기초하여, 상기 RAN이 사용자 평면 연결에 사용할 네트워크 인스턴스를 결정하는 단계를 포함하는, 방법.
- 상기 제1항의 방법에 따라 동작하도록 설정되는, AMF(access and management function) 네트워크 엔티티 장치.
- 상기 제7항의 방법에 따라 동작하도록 설정되는, SMF(session management function) 네트워크 엔티티 장치.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP22781722.8A EP4301083B1 (en) | 2021-04-02 | 2022-04-04 | METHOD AND DEVICE FOR MANAGING SESSIONES BASED ON INBOUND LINK INFORMATION IN A WIRELESS COMMUNICATION SYSTEM |
| CN202280039436.4A CN117413616A (zh) | 2021-04-02 | 2022-04-04 | 用于在无线通信系统中管理基于回程信息的会话的方法和设备 |
| US18/552,825 US20240224256A1 (en) | 2021-04-02 | 2022-04-04 | Method and device for managing backhaul information-based session in wireless communication system |
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| Application Number | Priority Date | Filing Date | Title |
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| KR10-2021-0043506 | 2021-04-02 | ||
| KR1020210043506A KR20220137429A (ko) | 2021-04-02 | 2021-04-02 | 무선 통신 시스템에서 백홀 정보 기반 세션 관리를 위한 방법 및 장치 |
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| WO2022211603A1 true WO2022211603A1 (ko) | 2022-10-06 |
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| US (1) | US20240224256A1 (ko) |
| EP (1) | EP4301083B1 (ko) |
| KR (1) | KR20220137429A (ko) |
| CN (1) | CN117413616A (ko) |
| WO (1) | WO2022211603A1 (ko) |
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| WO2021235879A1 (ko) * | 2020-05-21 | 2021-11-25 | 삼성전자 주식회사 | 무선통신 시스템에서 백홀 정보를 고려하여 세션을 관리하기 위한 방법 및 장치 |
| US12574750B2 (en) * | 2023-02-17 | 2026-03-10 | Verizon Patent And Licensing Inc. | Method and system for spectrum sharing between terrestrial and non-terrestrial networks |
| WO2025169394A1 (ja) * | 2024-02-08 | 2025-08-14 | 株式会社Nttドコモ | ネットワークノード及び基地局 |
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| CN110418427B (zh) * | 2018-04-28 | 2021-06-08 | 华为技术有限公司 | 一种通信方法及装置 |
| US11115115B2 (en) * | 2019-06-14 | 2021-09-07 | Ofinno, Llc | Non-access stratum connection handling |
| US11641564B2 (en) * | 2019-08-16 | 2023-05-02 | Ofinno, Llc | Flexible zone-based registration area tracking in a wireless network |
| US11956332B2 (en) * | 2019-12-31 | 2024-04-09 | Convida Wireless, Llc | Edge aware distributed network |
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- 2022-04-04 WO PCT/KR2022/004804 patent/WO2022211603A1/ko not_active Ceased
- 2022-04-04 US US18/552,825 patent/US20240224256A1/en active Pending
- 2022-04-04 CN CN202280039436.4A patent/CN117413616A/zh active Pending
Non-Patent Citations (6)
| Title |
|---|
| "3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; Procedures for the 5G System (5GS); Stage 2 (Release 17)", 3GPP STANDARD; 3GPP TS 23.502, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. SA WG2, no. V17.0.0, 31 March 2021 (2021-03-31), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , pages 1 - 646, XP052000251 * |
| CATT ZTE CHINA MOBILE: "Discussion on Satellite Backhaul", 3GPP DRAFT; S2-2100644, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. SA WG2, no. 20210224 - 20210309, 18 February 2021 (2021-02-18), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP052172970 * |
| ERICSSON: "IAB Node Integration Procedure", 3GPP DRAFT; R2-1903971, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Xi’an, P. R. of China; 20190408 - 20190412, 28 March 2019 (2019-03-28), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051693205 * |
| See also references of EP4301083A4 * |
| TNO: "Procedures of utilizing backhaul related information during the PDU session establishment procedure", 3GPP DRAFT; S2-2005055, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. SA WG2, no. e-meeting; 20200819 - 20200902, 12 August 2020 (2020-08-12), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051919138 * |
| XIAOMI: "Detection of satellite backhaul based on configuration information", 3GPP DRAFT; S2-2100965, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. SA WG2, no. E (e-meeting); 20210224 - 20210309, 18 February 2021 (2021-02-18), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP052173459 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4301083B1 (en) | 2025-12-31 |
| US20240224256A1 (en) | 2024-07-04 |
| KR20220137429A (ko) | 2022-10-12 |
| EP4301083A4 (en) | 2025-01-08 |
| CN117413616A (zh) | 2024-01-16 |
| EP4301083A1 (en) | 2024-01-03 |
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