Search

EP-4742743-A1 - METHOD FOR MANAGING SESSION FOR EDGE COMPUTING SERVICE, AND DEVICE THEREFOR

EP4742743A1EP 4742743 A1EP4742743 A1EP 4742743A1EP-4742743-A1

Abstract

The present disclosure relates to a 5G or 6G communication system for supporting higher data transmission rates. This method performed by an AMF entity in a wireless communication system may comprise the steps of: receiving subscription data from a UDM entity; identifying an LECF entity and an SMF entity on the basis of at least some from among the subscription data, a first message about the generation of a PDU session received from a terminal, position information of the terminal, and LECF entity information; and transmitting, to the LECF entity, a second message for PDU session generation. The subscription data can include a first indicator indicating that local offloading control by a local edge control function (LECF) entity is permitted, and the second message can include a second indicator indicating the local offloading control and information about the SMF entity.

Inventors

  • KIM, HYESUNG
  • BAE, Jaehyeon
  • LEE, JICHEOL

Assignees

  • Samsung Electronics Co., Ltd.

Dates

Publication Date
20260513
Application Date
20240729

Claims (15)

  1. An access and mobility management function (AMF) entity in a wireless communication system, the AMF entity comprising: a transceiver; and a controller connected to the transceiver, wherein the controller is configured to: receive subscription data from a unified data management (UDM) entity, the subscription data comprising a first indicator indicating that local offloading control by a local edge control function (LECF) entity is allowed; based on at least a part of the subscription data, a first message, received from a terminal, for establishment of a protocol data unit (PDU) session, location information of the terminal, or LECF entity information, identify the LECF entity and a session management function (SMF) entity; and transmit a second message for establishment of the PDU session to the LECF entity, the second message comprising a second indicator indicating the local offloading control and information on the SMF entity.
  2. The AMF entity of claim 1, wherein the controller is further configured to, based on a policy configured for the AMF entity or the first indicator included in the subscription data, determine to perform the local offloading control by the LECF.
  3. The AMF entity of claim 1, wherein the controller is further configured to receive the LECF entity information from a network function repository function (NRF) entity or an operations, administration, and maintenance (OAM) entity, and wherein the LECF entity information comprises address information of the LECF entity, an identifier of the LECF entity, service area information of the LECF entity, or deployment area information of the LECF entity.
  4. The AMF entity of claim 1, wherein the subscription data comprises information for identifying the SMF entity, and wherein the first message comprises at least a part of data network name (DNN) information or single-network slice selection assistance information (S-NSSAI) information.
  5. A local edge control function (LECF) entity for local offloading control in a wireless communication system, the LECF entity comprising: a transceiver; and a controller connected to the transceiver, wherein the controller is configured to: receive, from an access and mobility management function (AMF) entity, a second message for establishment of a PDU session, the second message comprising a second indicator indicating the local offloading control and information on a session management function (SMF) entity; and transmit a third message for establishment of the PDU session to the SMF entity, and wherein the third message comprises a third indicator for requesting the local offloading control.
  6. The LECF entity of claim 5, wherein the controller is further configured to transmit LECF entity information to a network function repository function (NRF) entity, and wherein the LECF entity information comprises at least one of a network function (NF) entity type identifier, an instance identifier of the LECF entity, supported data network name (DNN) information, supported single-network slice selection assistance information (S-NSSAI) information, address information of the LECF entity, service area information of the LECF entity or deployment area information of the LECF entity, a data network access identifier (DNAI) list, information on functionality or capability of the local offloading control, or selection preference information.
  7. The LECF entity of claim 5, wherein the controller is further configured to: identify a local user plane function (L-UPF) entity managed by the LECF entity; and receive a fourth message comprising a policy for the local offloading control from the SMF entity, and wherein the policy comprises at least one of a policy for a UPF entity managed by the SMF entity or a policy for the L-UPF entity managed by the LECF entity.
  8. The LECF entity of claim 5, wherein the third message further comprises at least a part of target locality information, a terminal identifier, DNN information, S-NSSAI information, or a PDU session identifier, and wherein the target locality information comprises deployment area information of the LECF entity.
  9. A method performed by an access and mobility management function (AMF) entity in a wireless communication system, the method comprising: receiving subscription data from a unified data management (UDM) entity, the subscription data comprises a first indicator indicating that local offloading control by a local edge control function (LECF) entity is allowed; based on at least a part of the subscription data, a first message, received from a terminal, for establishment of a protocol data unit (PDU) session, location information of the terminal, or LECF entity information, identifying the LECF entity and a session management function (SMF) entity; and transmitting a second message for establishment of the PDU session to the LECF entity, the second message comprising a second indicator indicating the local offloading control and information on the SMF entity.
  10. The method of claim 9, further comprising, based on a policy configured for the AMF entity or the first indicator included in the subscription data, determining to perform the local offloading control by the LECF.
  11. The method of claim 9, further comprising receiving the LECF entity information from a network function repository function (NRF) entity or an operations, administration, and maintenance (OAM) entity, wherein the LECF entity information comprises address information of the LECF entity, an identifier of the LECF entity, service area information of the LECF entity, or deployment area information of the LECF entity.
  12. The method of claim 9, wherein the subscription data comprises information for identifying the SMF entity, and wherein the first message comprises at least a part of data network name (DNN) information or single-network slice selection assistance information (S-NSSAI) information.
  13. A method performed by a local edge control function (LECF) entity for local offloading control in a wireless communication system, the method comprising: receiving, from an access and mobility management function (AMF) entity, a second message for establishment of a PDU session, the second message comprising a second indicator indicating the local offloading control and information on a session management function (SMF) entity; and transmitting a third message for establishment of the PDU session to the SMF entity, wherein the third message comprises a third indicator for requesting the local offloading control.
  14. The method of claim 13, further comprising transmitting LECF entity information to a network function repository function (NRF) entity, wherein the LECF entity information comprises at least one of a network function (NF) entity type identifier, an instance identifier of the LECF entity, supported data network name (DNN) information, supported single-network slice selection assistance information (S-NSSAI) information, address information of the LECF entity, service area information of the LECF entity or deployment area information of the LECF entity, a data network access identifier (DNAI) list, information on functionality or capability of the local offloading control, or selection preference information.
  15. The method of claim 13, further comprising: identifying a local user plane function (L-UPF) entity managed by the LECF entity; and receiving a fourth message comprising a policy for the local offloading control from the SMF entity, wherein the policy comprises at least one of a policy for a UPF entity managed by the SMF entity or a policy for the L-UPF entity managed by the LECF entity.

Description

[Technical Field] The disclosure relates to a wireless communication system and, more specifically, to a method of operating core network functions for PDU session management in a mobile communication system. [Background Art] 5G mobile communication technologies define broad frequency bands such that high transmission rates and new services are possible, and can be implemented not only in "Sub 6GHz" bands such as 3.5GHz, but also in "Above 6GHz" bands referred to as mmWave including 28GHz and 39GHz. In addition, it has been considered to implement 6G mobile communication technologies (referred to as Beyond 5G systems) in terahertz (THz) bands (for example, 95GHz to 3THz bands) in order to accomplish transmission rates fifty times faster than 5G mobile communication technologies and ultra-low latencies one-tenth of 5G mobile communication technologies. At the beginning of the development of 5G mobile communication technologies, in order to support services and to satisfy performance requirements in connection with enhanced Mobile BroadBand (eMBB), Ultra Reliable Low Latency Communications (URLLC), and massive Machine-Type Communications (mMTC), there has been ongoing standardization regarding beamforming and massive MIMO for mitigating radio-wave path loss and increasing radio-wave transmission distances in mmWave, supporting numerologies (for example, operating multiple subcarrier spacings) for efficiently utilizing mmWave resources and dynamic operation of slot formats, initial access technologies for supporting multi-beam transmission and broadbands, definition and operation of BWP (BandWidth Part), new channel coding methods such as a LDPC (Low Density Parity Check) code for large amount of data transmission and a polar code for highly reliable transmission of control information, L2 pre-processing, and network slicing for providing a dedicated network specialized to a specific service. Currently, there are ongoing discussions regarding improvement and performance enhancement of initial 5G mobile communication technologies in view of services to be supported by 5G mobile communication technologies, and there has been physical layer standardization regarding technologies such as V2X (Vehicle-to-everything) for aiding driving determination by autonomous vehicles based on information regarding positions and states of vehicles transmitted by the vehicles and for enhancing user convenience, NR-U (New Radio Unlicensed) aimed at system operations conforming to various regulation-related requirements in unlicensed bands, NR UE Power Saving, Non-Terrestrial Network (NTN) which is UE-satellite direct communication for providing coverage in an area in which communication with terrestrial networks is unavailable, and positioning. Moreover, there has been ongoing standardization in air interface architecture/protocol regarding technologies such as Industrial Internet of Things (IIoT) for supporting new services through interworking and convergence with other industries, IAB (Integrated Access and Backhaul) for providing a node for network service area expansion by supporting a wireless backhaul link and an access link in an integrated manner, mobility enhancement including conditional handover and DAPS (Dual Active Protocol Stack) handover, and two-step random access for simplifying random access procedures (2-step RACH for NR). There also has been ongoing standardization in system architecture/service regarding a 5G baseline architecture (for example, service based architecture or service based interface) for combining Network Functions Virtualization (NFV) and Software-Defined Networking (SDN) technologies, and Mobile Edge Computing (MEC) for receiving services based on UE positions. As 5G mobile communication systems are commercialized, connected devices that have been exponentially increasing will be connected to communication networks, and it is accordingly expected that enhanced functions and performances of 5G mobile communication systems and integrated operations of connected devices will be necessary. To this end, new research is scheduled in connection with eXtended Reality (XR) for efficiently supporting AR (Augmented Reality), VR (Virtual Reality), MR (Mixed Reality) and the like, 5G performance improvement and complexity reduction by utilizing Artificial Intelligence (AI) and Machine Learning (ML), AI service support, metaverse service support, and drone communication. Furthermore, such development of 5G mobile communication systems will serve as a basis for developing not only new waveforms for providing coverage in terahertz bands of 6G mobile communication technologies, multi-antenna transmission technologies such as Full Dimensional MIMO (FD-MIMO), array antennas and large-scale antennas, metamaterial-based lenses and antennas for improving coverage of terahertz band signals, high-dimensional space multiplexing technology using OAM (Orbital Angular Momentum), and RIS (Reconfigurable Intelligent Surfa