WO2024071762A1 - 가입 검사를 위한 전자 장치 및 방법 - Google Patents
가입 검사를 위한 전자 장치 및 방법 Download PDFInfo
- Publication number
- WO2024071762A1 WO2024071762A1 PCT/KR2023/013763 KR2023013763W WO2024071762A1 WO 2024071762 A1 WO2024071762 A1 WO 2024071762A1 KR 2023013763 W KR2023013763 W KR 2023013763W WO 2024071762 A1 WO2024071762 A1 WO 2024071762A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ric
- subscription
- node
- request
- subscription information
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/60—Subscription-based services using application servers or record carriers, e.g. SIM application toolkits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/12—Access point controller devices
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/04—Interfaces between hierarchically different network devices
- H04W92/12—Interfaces between hierarchically different network devices between access points and access point controllers
Definitions
- the 5G communication system or pre-5G communication system is called a Beyond 4G Network communication system or a Post LTE (Long Term Evolution) system.
- 5G communication systems are being considered for implementation in ultra-high frequency (mmWave) bands (such as the 60 GHz band).
- mmWave ultra-high frequency
- the 5G communication system uses beamforming, massive array multiple input/output (massive MIMO), and full dimension multiple input/output (FD-MIMO). ), array antenna, analog beam-forming, and large scale antenna technologies are being discussed.
- the 5G communication system uses evolved small cells, advanced small cells, cloud radio access networks (cloud RAN), and ultra-dense networks.
- D2D Device to Device communication
- wireless backhaul moving network
- cooperative communication Coordinated Multi-Points (CoMP)
- CoMP Coordinated Multi-Points
- the 5G system uses FQAM (Hybrid Frequency Shift Keying and Quadrature Amplitude Modulation) and SWSC (Sliding Window Superposition Coding), which are advanced coding modulation (ACM) methods, and FBMC (Filter Bank Multi Carrier), which is an advanced access technology. ), NOMA (Non Orthogonal Multiple Access), and SCMA (Sparse Code Multiple Access) are being developed.
- FQAM Hybrid Frequency Shift Keying and Quadrature Amplitude Modulation
- SWSC Small Cell Multi Carrier
- NOMA Non Orthogonal Multiple Access
- SCMA Synchrom Code Multiple Access
- the 5G system To meet the demand for wireless data traffic, the 5G system, NR (new radio or next radio), has been commercialized, providing users with high data rate services through the 5G system like 4G, and also for the Internet of Things and specific purposes. It is expected that wireless communication services for various purposes, such as services requiring high reliability, can be provided.
- O-RAN open radio access network
- RIC radio access network
- the maximum transmission speed is tera (i.e., 1,000 gigabytes) bps (bit per second), and the wireless delay time is 100 microseconds ( ⁇ sec).
- the transmission speed in the 6G communication system is 50 times faster and the wireless delay time is reduced by one-tenth.
- 6G communication systems will operate in the Terahertz (THz) band (e.g., from 95 Gigahertz (GHz) to 3 THz).
- THz Terahertz
- the importance of technology that can guarantee signal reach, or coverage, is expected to increase in the terahertz band due to more serious path loss and atmospheric absorption compared to the mmWave band introduced in 5G.
- the main technologies to ensure coverage are RF (Radio Frequency) elements, antennas, new waveforms that are better in terms of coverage than OFDM (Orthogonal Frequency Division Multiplexing), beamforming, and massive multiple input/output (MASSIVE multiple input/output).
- Multi-antenna transmission technologies such as Input and Multiple-Output (MIMO), Full Dimensional MIMO (FD-MIMO), array antenna, and large scale antenna must be developed.
- MIMO Input and Multiple-Output
- FD-MIMO Full Dimensional MIMO
- array antenna array antenna
- large scale antenna must be developed.
- new technologies such as metamaterial-based lenses and antennas, high-dimensional spatial multiplexing technology using Orbital Angular Momentum (OAM), and Reconfigurable Intelligent Surface (RIS) are being discussed.
- OFAM Orbital Angular Momentum
- RIS Reconfigurable Intelligent Surface
- the 6G communication system uses full duplex technology where uplink and downlink simultaneously utilize the same frequency resources at the same time, satellite and Network technology that comprehensively utilizes HAPS (High-Altitude Platform Stations), network structure innovation technology that supports mobile base stations and enables network operation optimization and automation, and dynamic frequency sharing through collision avoidance based on spectrum usage prediction.
- HAPS High-Altitude Platform Stations
- AI-based communication technology that utilizes AI (Artificial Intelligence) from the design stage and internalizes end-to-end AI support functions to realize system optimization, and overcomes the limits of terminal computing capabilities.
- Next-generation distributed computing technologies that realize complex services using ultra-high-performance communication and computing resources (Mobile Edge Computing (MEC), cloud, etc.) are being developed.
- MEC Mobile Edge Computing
- the 6G communication system Due to the research and development of these 6G communication systems, a new level of hyper-connected experience (the next hyper-connected) is possible through the hyper-connectivity of the 6G communication system, which includes not only connections between objects but also connections between people and objects. experience) is expected to become possible. Specifically, it is expected that the 6G communication system will be able to provide services such as truly immersive eXtended Reality (XR), high-fidelity mobile hologram, and digital replica. In addition, services such as remote surgery, industrial automation, and emergency response through improved security and reliability are provided through the 6G communication system, enabling application in various fields such as industry, medicine, automobiles, and home appliances. It will be.
- XR truly immersive eXtended Reality
- high-fidelity mobile hologram high-fidelity mobile hologram
- digital replica digital replica
- services such as remote surgery, industrial automation, and emergency response through improved security and reliability are provided through the 6G communication system, enabling application in various fields such as industry, medicine, automobiles, and home appliances. It will be.
- RAN functions will be further divided into service subscribers and service providers.
- subscription service confirmation process for service subscription status will be applied to various functions.
- the method performed by the E2 node may include transmitting an audit request message to a Near-RT (real time) RIC (radio access network (RAN) intelligent controller). .
- the method may include receiving a test response message from the Near-RT RIC.
- the RIC subscription check response message may include one or more subscription information within the Near-RT RIC.
- Each of the one or more pieces of subscription information may include a RAN function ID (identifier) and a RIC request ID for the corresponding RIC subscription.
- a method performed by Near-RT (real time) RIC may include transmitting an audit request message to the E2 node.
- the method may include receiving a check response message from the E2 node.
- the RIC subscription check response message may include one or more subscription information within the E2 node.
- Each of the one or more pieces of subscription information may include a RAN function ID (identifier) and a RIC request ID for the corresponding RIC subscription.
- a method performed by an E2 node may include receiving an audit request message from a Near-RT (real time) RIC (radio access network (RAN) intelligent controller). .
- the method may include transmitting a test response message to the Near-RT RIC.
- the RIC subscription check response message may include one or more subscription information within the E2 node.
- Each of the one or more pieces of subscription information may include a RAN function ID (identifier) and a RIC request ID for the corresponding RIC subscription.
- a method performed by Near-RT (real time) RIC may include receiving an audit request message from an E2 node. The method may include transmitting a check response message to the E2 node.
- the RIC subscription check response message may include one or more subscription information within the Near-RT RIC. Each of the one or more pieces of subscription information may include a RAN function ID (identifier) and a RIC request ID for the corresponding RIC subscription.
- the electronic device of the E2 node includes at least one transceiver; And it may include at least one processor coupled to the at least one transceiver.
- the at least one processor may control the at least one transceiver to transmit an audit request message to a Near-RT (real time) RIC (radio access network (RAN) intelligent controller).
- the at least one processor may control the at least one transceiver to receive a check response message from the Near-RT RIC.
- the RIC subscription check response message may include one or more subscription information within the Near-RT RIC.
- Each of the one or more pieces of subscription information may include a RAN function ID (identifier) and a RIC request ID for the corresponding RIC subscription.
- a Near-RT (real time) RIC electronic device includes at least one transceiver; And it may include at least one processor coupled to the at least one transceiver.
- the at least one processor may control the at least one transceiver to transmit an audit request message to the E2 node.
- the at least one processor may control the at least one transceiver to receive a test response message from the E2 node.
- the RIC subscription check response message may include one or more subscription information within the E2 node.
- Each of the one or more pieces of subscription information may include a RAN function ID (identifier) and a RIC request ID for the corresponding RIC subscription.
- the electronic device of the E2 node includes at least one transceiver; And it may include at least one processor coupled to the at least one transceiver.
- the at least one processor may control the at least one transceiver to receive an audit request message from a Near-RT (real time) RIC (radio access network (RAN) intelligent controller).
- the at least one processor may control the at least one transceiver to transmit a check response message to the Near-RT RIC.
- the RIC subscription check response message may include one or more subscription information within the E2 node.
- Each of the one or more pieces of subscription information may include a RAN function ID (identifier) and a RIC request ID for the corresponding RIC subscription.
- a Near-RT (real time) RIC electronic device includes at least one transceiver; And it may include at least one processor coupled to the at least one transceiver.
- the at least one processor may control the at least one transceiver to receive an audit request message from the E2 node.
- the at least one processor may control the at least one transceiver to transmit a test response message to the E2 node.
- the RIC subscription check response message may include one or more subscription information within the Near-RT RIC.
- Each of the one or more pieces of subscription information may include a RAN function ID (identifier) and a RIC request ID for the corresponding RIC subscription.
- a method performed by Near-RT (real time) RIC may include transmitting an audit request message to the E2 node.
- the method may include receiving an audit response message from the E2 node.
- the RIC subscription inspection request message can be used for the RIC subscription audit procedure.
- the RIC subscription check response message may include a list of one or more RIC subscription information of the E2 node.
- Each RIC subscription information in the list of one or more RIC subscription information may include a RAN function ID (identifier) and a RIC request ID.
- a method performed by an E2 node may include receiving an audit request message from a Near-RT (real time) RIC (radio access network (RAN) intelligent controller).
- the method may include transmitting an audit response message to the Near-RT RIC in response to the inspection request message.
- the RIC subscription inspection request message can be used for the RIC subscription audit procedure.
- the RIC subscription check response message may include a list of one or more RIC subscription information of the E2 node.
- Each RIC subscription information in the list of one or more RIC subscription information may include a RAN function ID (identifier) and a RIC request ID.
- a Near-RT (real time) RIC electronic device may include a memory that stores instructions, at least one transceiver, and at least one processor coupled to the at least one transceiver.
- the instructions when executed by the at least one processor, cause the electronic device to transmit an audit request message to the E2 node through the at least one transceiver, and to receive an audit response message from the E2 node. It can be caused to be received through at least one transceiver.
- the RIC subscription inspection request message can be used for the RIC subscription audit procedure.
- the RIC subscription check response message may include a list of one or more RIC subscription information of the E2 node. Each RIC subscription information in the list of one or more RIC subscription information may include a RAN function ID (identifier) and a RIC request ID.
- an electronic device in an E2 node may include a memory that stores instructions, at least one transceiver, and at least one processor coupled to the at least one transceiver.
- the instructions when executed by the at least one processor, cause the electronic device to send the at least one audit request message from a Near-RT (real time) RIC (radio access network (RAN) intelligent controller). It can be received through the transceiver of , and cause the Near-RT RIC to transmit a check response message through the at least one transceiver.
- the RIC subscription inspection request message can be used for the RIC subscription audit procedure.
- the RIC subscription check response message may include a list of one or more RIC subscription information of the E2 node. Each RIC subscription information in the list of one or more RIC subscription information may include a RAN function ID (identifier) and a RIC request ID.
- a non-transitory storage medium may include memory for storing instructions.
- the instructions when executed by at least one processor, cause a Near-RT (real time) RIC (radio access network (RAN) intelligent controller) to transmit an audit request message to the E2 node, and This can cause an audit response message to be received.
- the RIC subscription inspection request message can be used for the RIC subscription audit procedure.
- the RIC subscription check response message may include a list of one or more RIC subscription information of the E2 node.
- Each RIC subscription information in the list of one or more RIC subscription information may include a RAN function ID (identifier) and a RIC request ID.
- a non-transitory storage medium may include memory for storing instructions.
- the instructions when executed by at least one processor, cause the E2 node to receive an audit request message from a Near-RT (real time) RIC (radio access network (RAN) intelligent controller), and the audit request message In response, it can cause the Near-RT RIC to transmit an audit response message.
- the RIC subscription inspection request message can be used for the RIC subscription audit procedure.
- the RIC subscription check response message may include a list of one or more RIC subscription information of the E2 node. Each RIC subscription information in the list of one or more RIC subscription information may include a RAN function ID (identifier) and a RIC request ID.
- Figure 1 shows an example of a 4th generation (4G) Long Term Evolution (LTE) core system.
- 4G 4th generation
- LTE Long Term Evolution
- Figure 2A shows an example of a 5th generation (5G) non-standard alone (NSA) system.
- Figure 2b shows an example of architecture for O-RAN.
- Figure 3 shows a protocol stack of an E2 application protocol message in a wireless access network according to embodiments.
- Figure 4 shows an example of a connection between a base station and a radio access network intelligence controller (RIC) in a wireless access network according to embodiments.
- RIC radio access network intelligence controller
- Figure 5 shows the configuration of a device in a wireless access network according to embodiments.
- FIG. 6 illustrates logical functions related to the E2 message of an E2 node and RIC in a wireless access network according to embodiments.
- Figure 7 shows examples of functional separation between an E2 node and RIC in embodiments.
- Figure 8 shows an example of implementation of an E2 node and RIC according to embodiments.
- Figure 9 shows examples of functional separation between a centralized unit (CU) and RIC according to embodiments.
- FIG. 10 illustrates functional blocks of each Near-RT RIC and E2 node according to a subscription procedure, according to embodiments.
- Figure 11A shows an example of a subscription audit procedure between a Near-RT RIC and an E2 node, according to one embodiment.
- FIG. 11B shows an example of a subscription check procedure between a Near-RT RIC and an E2 node, according to one embodiment.
- Figure 12A shows an example of a subscription check procedure triggered by activity time, according to one embodiment.
- Figure 12B shows an example of a subscription check procedure initiated based on an event, according to one embodiment.
- FIG. 13 shows an example of subscription management using a subscription check procedure, according to one embodiment.
- Figure 14 shows an example of subscription management using a subscription check procedure, according to one embodiment.
- Figure 15 shows an example of subscription management using a subscription check procedure, according to one embodiment.
- 16 illustrates an example of subscription management using a subscription check procedure, according to one embodiment.
- the present disclosure relates to a device within a radio access network (RAN) and an inter-device control procedure for controlling the RAN in a wireless communication system.
- the present disclosure provides a version number of the E2AP standard (e.g., E2AP 2.02) from the E2 node to the RIC on the E2 interface, so that the E2 node and the RIC perform standardly correct operations and ensure backward compatibility. It relates to procedures, messages, and methods to ensure that
- Terms used in the following description refer to configuration (e.g., setup, setting, arrangement, control), and terms that refer to signals (e.g., packet, message, signal). , information, signaling), terms referring to resources (e.g. section, symbol, slot, subframe, radio frame, subcarrier, RE( resource element, resource block (RB), bandwidth part (BWP), opportunity), terms for operational states (e.g. step, operation, procedure), data. Terms (e.g.
- the expressions greater than or less than may be used to determine whether a specific condition is satisfied or fulfilled, but this is only a description for expressing an example, and the description of more or less may be used. It's not exclusion. Conditions written as ‘more than’ can be replaced with ‘more than’, conditions written as ‘less than’ can be replaced with ‘less than’, and conditions written as ‘more than and less than’ can be replaced with ‘greater than and less than’. Additionally, unless explicitly stated otherwise, hereinafter 'A' to 'B' means at least one of the elements from A to (including A) and B (including B).
- ‘C’ and/or ‘D’ means including at least one of ‘C’ or ‘D’, i.e. ⁇ ‘C’, ‘D’, ‘C’ and ‘D’ ⁇ .
- the present disclosure provides various embodiments using terms used in some communication standards (e.g., 3rd Generation Partnership Project (3GPP), extensible radio access network (xRAN), and open radio access network (O-RAN)).
- 3GPP 3rd Generation Partnership Project
- xRAN extensible radio access network
- O-RAN open radio access network
- 4th generation (4G)/5th generation (5G) communication systems e.g., new radio (NR)
- 4G/5th generation (5G) communication systems e.g., new radio (NR)
- NR new radio
- 3GPP is a joint research project between mobile communication organizations and aims to create 3rd generation mobile communication system specifications that can be applied globally within the scope of the IMT-2000 project of the International Telecommunication Union (ITU).
- ITU International Telecommunication Union
- 3GPP was established in December 1998, and the 3GPP standard is based on the advanced GSM standard, and includes radio, core network, and service architecture in the scope of standardization.
- O-RAN open radio access network
- RU radio unit
- DU digital unit
- CU central unit
- CP control plane
- CU-UP user plane
- O(O-RAN)-RU O-DU
- O-CU-CP control plane
- NRT near-real- time
- RIC radio access network intelligent controller
- O-RU, O-DU, O-CU-CP, and O-CU-UP can be understood as objects constituting the RAN that can operate according to the O-RAN standard, and can be used as an E2 node. can be referred to.
- the interface with objects constituting the RAN that can operate according to the O-RAN standard between RIC and E2 nodes uses E2AP (application protocol).
- RIC is a logical node that can collect information at the cell site where the terminal and O-DU, O-CU-CP or O-CU-UP transmit and receive.
- RIC can be implemented in the form of servers centrally located in one physical location. Connections can be made via Ethernet between O-DU and RIC, between O-CU-CP and RIC, and between O-CU-UP and RIC.
- interface specifications for communication between O-DU and RIC, between O-CU-CP and RIC, and between O-CU-UP and RIC are needed, and E2-DU, E2-CU-CP, E2-CU- Definition of message standards such as UP and procedures between O-DU, O-CU-CP, O-CU-UP and RIC is required.
- differentiated service support is required for users in virtualized networks, and E2-DU to support services for a wide range of cell coverage by concentrating call processing messages/functions generated in O-RAN on RIC.
- Function definition of the messages of E2-CU-CP and E2-CU-UP is required.
- RIC communicates with O-DU, O-CU-CP, and O-CU-UP using the E2 interface, and can set event occurrence conditions by generating and sending a subscription message. Specifically, RIC can set up a call processing EVENT by generating an E2 subscription request message and delivering it to an E2 node (e.g. O-CU-CP, O-CU-UP, O-DU). there is. Additionally, after setting EVENT, the E2 node delivers the Subscription Request Response message to the RIC.
- E2 node e.g. O-CU-CP, O-CU-UP, O-DU.
- the E2 node can transmit the current status to the RIC through E2 indication/report.
- RIC can provide control for O-DU, O-CU-CP, and O-CU-UP using E2 control messages.
- Various embodiments of the present disclosure propose an E2 indication message in which UE-level measurement information is transmitted for each period set in subscription event conditions in the O-DU. Additionally, various embodiments of the present disclosure propose a message for controlling resources transmitted from RIC to O-DU.
- Figure 1 shows an example of a 4th generation (4G) Long Term Evolution (LTE) core system.
- 4G 4th generation
- LTE Long Term Evolution
- the LTE core system includes a base station 110, a terminal 120, a serving gateway (S-GW) 130, a packet data network gateway (P-GW) 140, and a mobility management entity (MME). (150), HSS (home subscriber server) (160), and PCRF (policy and charging rule function) (170).
- S-GW serving gateway
- P-GW packet data network gateway
- MME mobility management entity
- the base station 110 is a network infrastructure that provides wireless access to the terminal 120.
- the base station 110 is a device that performs scheduling by collecting status information such as buffer status, available transmission power, and channel status of the terminal 120.
- Base station 110 has coverage defined as a certain geographic area based on the distance over which signals can be transmitted.
- the base station 110 is connected to the MME 150 through the S1-MME interface.
- the base station 110 includes an 'access point (AP)', an 'eNodeB (eNB)', a 'wireless point', a 'transmission/reception point, TRP)' or other terms with equivalent technical meaning.
- AP 'access point
- eNB 'eNodeB
- TRP 'transmission/reception point
- the terminal 120 is a device used by a user and communicates with the base station 110 through a wireless channel. In some cases, the terminal 120 may be operated without user involvement. For example, the terminal 120 is a device that performs machine type communication (MTC) and may not be carried by the user.
- MTC machine type communication
- the terminal 120 is a terminal, as well as 'user equipment (UE)', 'mobile station', 'subscriber station', and customer-premises equipment (CPE). It may be referred to as a 'remote terminal', 'wireless terminal', or 'user device' or other terms having equivalent technical meaning.
- the S-GW (130) provides a data bearer and creates or controls the data bearer under the control of the MME (150). For example, the S-GW 130 processes packets arriving from the base station 110 or packets to be forwarded to the base station 110. Additionally, the S-GW 130 may perform an anchoring role during handover between base stations of the terminal 120.
- the P-GW 140 may function as a connection point with an external network (e.g., an Internet network). Additionally, the P-GW 140 allocates an IP (Internet Protocol) address to the terminal 120 and serves as an anchor for the S-GW 130. Additionally, the P-GW 140 can apply the Quality of Service (QoS) policy of the terminal 120 and manage account data.
- QoS Quality of Service
- the MME 150 manages the mobility of the terminal 120. Additionally, the MME 150 may perform authentication and bearer management for the terminal 120. That is, the MME 150 is responsible for mobility management and various control functions for the terminal.
- the MME 150 can be linked to a serving GPRS support node (SGSN).
- SGSN serving GPRS support node
- HSS 160 stores key information and subscriber profile for authentication of terminal 120. Key information and subscriber profile are transmitted from the HSS 160 to the MME 150 when the terminal 120 connects to the network.
- PCRF 170 defines rules for policy and charging.
- the stored information is transferred from the PCRF 170 to the P-GW 140, and the P-GW 140 controls the terminal 120 (e.g., QoS management, billing, etc.) based on the information provided from the PCRF 170. ) can be performed.
- CA Carrier aggregation
- a terminal and a base station can transmit and receive signals using a wide bandwidth using a plurality of component carriers in the uplink (UL) and downlink (DL), respectively.
- UL uplink
- DL downlink
- Each component carrier is located in a different frequency band.
- uplink refers to a communication link through which a terminal transmits a signal to a base station
- downlink refers to a communication link through which a base station transmits a signal to a terminal.
- the number of uplink component carriers and downlink component carriers may be different.
- Dual/multiple connectivity technology allows one terminal to connect to multiple different base stations and simultaneously transmit and receive signals using carriers within multiple base stations located in different frequency bands, from the perspective of the terminal or base station. It is a technology that increases frequency use efficiency.
- the terminal provides services using a first base station (e.g., a base station that provides services using LTE technology or 4th generation mobile communication technology) and a second base station (e.g., new radio (NR) technology or 5th generation (5G) mobile communication technology. It can simultaneously connect to the base station provided and transmit and receive traffic. At this time, the frequency resources used by each base station may be located in different bands.
- 5G NSA non-standalone
- Figure 2A shows an example of a 5G NSA system.
- the 5G NSA system includes an NR RAN (210a), an LTE RAN (210b), a terminal 220, and an evolved packet core (EPC) 250.
- the NR RAN (210a) and the LTE RAN (210b) are connected to the EPC 250, and the terminal 220 can receive services from either or both the NR RAN (210a) and the LTE RAN (210b) at the same time.
- NR RAN 210a includes at least one NR base station
- LTE RAN 210b includes at least one LTE base station.
- the NR base station may be referred to as '5G node (5th generation node)', 'next generation nodeB (gNB)', or other terms with equivalent technical meaning.
- the NR base station may have a structure divided into a central unit (CU) and a digital unit (DU), and the CU is divided into a control plane (CU-CP) unit and a user plane (CU-UP) unit. You can have
- the terminal 220 performs radio resource control (RRC) access through a first base station (e.g., a base station belonging to the LTE RAN 210b) and functions provided in the control plane. You can receive services (e.g. connection management, mobility management, etc.). Additionally, the terminal 220 may be provided with additional radio resources for transmitting and receiving data through a second base station (e.g., a base station belonging to the NR RAN 210a).
- This dual connectivity technology using LTE and NR may be referred to as EN-DC (E-UTRA (evolved universal terrestrial radio access) - NR dual connectivity).
- a dual connectivity technology in which the first base station uses NR technology and the second base station uses LTE technology is referred to as NE-DC (NR - E-UTRA dual connectivity).
- NE-DC NR - E-UTRA dual connectivity
- various embodiments can be applied to various other types of multiple connectivity and carrier aggregation technologies.
- various embodiments may be applied even when a first system using a first communication technology and a second system using a second communication technology are implemented in one device or when the first base station and the second base station are located in the same geographical location. You can.
- Figure 2b shows an example of architecture for O-RAN.
- KPI key performance indicator
- E2-SM-KPIMON key performance indicator monitoring
- RAN Non-stand alone mode is considered, while the E2 node can be assumed to be in O-RAN Stand Alone mode.
- the eNB in the deployment of O-RAN non-standalone mode, is connected through the EPC and S1-C/S1-U interface, and connected through O-CU-CP and X2 interface.
- O-CU-CP for deployment in O-RAN standalone mode can be connected to 5GC (5G core) through N2/N3 interface.
- V2X Vehicle-to-Everything
- NR-U New Radio Unlicensed
- UE Power Saving NR terminal low power consumption technology
- NTN Non-Terrestrial Network
- IAB provides a node for expanding the network service area by integrating intelligent factories (Industrial Internet of Things, IIoT) to support new services through linkage and convergence with other industries, and wireless backhaul links and access links.
- Intelligent factories Intelligent Internet of Things, IIoT
- Mobility Enhancement including Conditional Handover and DAPS (Dual Active Protocol Stack) handover
- 2-step Random Access (2-step RACH for simplification of random access procedures)
- Standardization in the field of wireless interface architecture/protocol for technologies such as NR is also in progress
- 5G baseline for incorporating Network Functions Virtualization (NFV) and Software-Defined Networking (SDN) technology Standardization in the field of system architecture/services for architecture (e.g., Service based Architecture, Service based Interface) and Mobile Edge Computing (MEC), which provides services based on the location of the terminal, is also in progress.
- NFV Network Functions Virtualization
- SDN Software-Defined Networking
- FD-MIMO full dimensional MIMO
- array antennas to ensure coverage in the terahertz band of 6G mobile communication technology.
- multi-antenna transmission technology such as Large Scale Antenna, metamaterial-based lens and antenna to improve coverage of terahertz band signals, high-dimensional spatial multiplexing technology using OAM (Orbital Angular Momentum), RIS ( In addition to Reconfigurable Intelligent Surface technology, Full Duplex technology, satellite, and AI (Artificial Intelligence) to improve the frequency efficiency of 6G mobile communication technology and system network are utilized from the design stage and end-to-end.
- FIG. 1 to 2B illustrate the 4G and/or 5G environment as an example, but this description does not limit the scope of the communication environment of the embodiments of the present disclosure.
- Technical principles according to embodiments of the present disclosure can also be applied to 6G and post-6G communication technologies and network environments.
- FIG. 3 illustrates a protocol stack of an E2 application protocol message in a wireless access network according to embodiments of the present disclosure.
- the control plane includes a transport network layer and a radio network layer.
- the transmission network layer includes a physical layer 310, a data link layer 320, an internet protocol (IP) 330, and a stream control transmission protocol (SCTP) 340.
- IP internet protocol
- SCTP stream control transmission protocol
- the wireless network layer includes E2AP (350).
- E2AP (350) is used to deliver subscription messages, indication messages, control messages, service update messages, and service query messages, It is transmitted at the higher layer of SCTP (340) and IP (330).
- Figure 4 shows an example of a connection between a base station and a radio access network intelligence controller (RIC) in a radio access network according to embodiments of the present disclosure.
- RIC radio access network intelligence controller
- RIC (440) is connected to O-CU-UP (410), O-CU-CP (420), and O-DU (430).
- RIC 440 is a device for customizing RAN functionality for new services or regional resource optimization.
- RIC (440) provides network intelligence (e.g., policy enforcement, handover optimization), resource assurance (e.g., radio-link management, improvement) It can provide functions such as advanced self-organized network (SON) and resource control (e.g., load balancing, slicing policy).
- RIC (440) can communicate with O-CU-CP (420), O-CU-UP (410), and O-DU (430).
- RIC (440) can be connected to each node through the E2-CP, E2-UP, and E2-DU interfaces.
- the interface between O-CU-CP and DU and between O-CU-UP and DU may be referred to as the F1 interface.
- DU and O-DU, CU-CP and O-CU-CP, CU-UP and O-CU-UP may be used interchangeably.
- FIG. 4 illustrates one RIC 440, however, depending on various embodiments, there may be multiple RICs. Multiple RICs may be implemented with multiple hardware located in the same physical location or may be implemented through virtualization using one hardware.
- Figure 5 shows the configuration of a device according to embodiments of the present disclosure.
- the structure illustrated in FIG. 5 can be understood as the configuration of a device having at least one function among the near-RT RIC, non-RT RIC, O-CU-CP, O-CU-UP, and O-DU of FIG. 4. .
- '... Terms such as 'unit' refer to a unit that processes at least one function or operation, and may be implemented as hardware, software, or a combination of hardware and software.
- the core network device includes a transceiver 510, a memory 520, and a processor 530.
- the transceiver 510 provides an interface for communicating with other devices in the network. That is, the transceiver 510 converts a bit string transmitted from a core network device to another device into a physical signal, and converts a physical signal received from another device into a bit string. That is, the transceiver 510 can transmit and receive signals. Accordingly, the transceiver 510 may be referred to as a communication unit, modem, transmit unit, receive unit, or transmit/receive unit. At this time, the transceiver 510 allows the core network device to communicate with other devices or systems through a backhaul connection (e.g., wired backhaul or wireless backhaul) or through a network. Although only one transceiver 510 is shown in FIG. 5, the device may include one or more transceivers.
- a backhaul connection e.g., wired backhaul or wireless backhaul
- the memory 520 stores data such as basic programs, application programs, and setting information for the operation of the core network device.
- Memory 520 may be referred to as a storage unit.
- the memory 520 may be comprised of volatile memory, non-volatile memory, or a combination of volatile memory and non-volatile memory. And, the memory 520 provides stored data according to the request of the processor 530.
- the processor 530 controls the overall operations of a network element (NE) device, such as an E2 node or Near-RT RIC. For example, the processor 530 transmits and receives signals through the transceiver 510. Additionally, the processor 530 writes and reads data into the memory 520. Although one processor 530 is shown in Figure 5, the device may include one or more processors. According to various embodiments, the processor 530 may control the device to perform operations according to various embodiments described in this disclosure.
- NE network element
- FIG. 6 illustrates logical functions related to the E2 message of an E2 node and RIC in a wireless access network according to embodiments of the present disclosure.
- the RIC 640 and the E2 node 610 can transmit or receive E2 messages to each other.
- E2 node 610 may be O-CU-CP, O-CU-UP, O-DU, or a base station.
- the communication interface of the E2 node may be determined depending on the type of E2 node 610.
- the E2 node 610 may communicate with another E2 node 616 through the E1 interface or the F1 interface.
- the E2 node 610 may communicate with the E2 node 616 through an X2 interface or an XN interface.
- the E2 node 610 may perform communication through an S1 interface or a next generation application protocol (NGAP) interface (i.e., an interface between a next generation (NG) RAN node and the AMF).
- NGAP next generation application protocol
- the E2 node 610 may include an E2 node function 612.
- the E2 node function 612 corresponds to a specific xApp (application S/W) 646 installed in the RIC 640.
- application S/W application S/W
- KPI monitor collection S/W is installed in the RIC (640)
- the E2 node (610) generates KPI parameters and then sends an E2 message containing the KPI parameters to RIC ( It may include an E2 node function 612 that delivers to the E2 termination 642 located at 640).
- E2 node 610 may include radio resource management (RRM) 614.
- the E2 node 610 can manage resources provided to the wireless network for the terminal.
- xApp 646 is an application designed to run on RIC 640 (e.g. Near-RT RIC).
- the application may be comprised of one or more microservices, and may identify the data it consumes and the data it provides at the time of onboarding.
- the application is independent of the RIC 640 and may be provided by a third party.
- the E2 interface enables direct connection between xApp 646 and RAN functions.
- the E2 endpoint 642 located in the RIC 640 is an endpoint of the RIC 640 for the E2 message. After interpreting the E2 message delivered (or transmitted) by the E2 node 610, it sends the message to xApp 646. It performs the function of delivering the E2 message.
- a database (DB) 644 located in the RIC 640 may be used for the E2 endpoint 642 or xApp 646.
- the E2 node 610 shown in FIG. 6 is the terminal of at least one interface and can be understood as the terminal of messages delivered to the terminal, surrounding base stations, and core network.
- FIG. 7 shows examples of functional separation between an E2 node and RIC in embodiments of the present disclosure.
- the O-RAN specification provides separation of functions between E2 nodes and RIC.
- the E2 node may be a CU.
- RIC may be Near RT RIC.
- RIC can be connected to ONAP (open network automation platform)/MANO (management and orchestration)/NMS (network management system) through the A1 interface.
- RIC can be connected to the E2 node through the E2 interface.
- the E2 interface can transmit commands.
- Function separation options may include function separation (700) in which the entire radio resource management (RRM) is managed by the near-RT RIC, and function separation (750) in which RRM is selectively managed in the near-RT RIC.
- RRM radio resource management
- Near-RT RIC will support E2 with an open logical interface targeting multi-vendor environments, regardless of the specific RRC-RRM algorithm implementation located in the near RT-RIC.
- E2SM-NI paired with an E2SM-NI that can perform inject/modify/configuration of Per UE RRC messages for each I/F and NE (network entity).
- RIC E2 Service Model Radio Interface Control
- Near RT RIC can be improved gradually from function separation 750 to function separation 700.
- E2 is independent of the specific RRC-RRM algorithm implementation in near RT-RIC and can be evolved into an open logical interface targeting multi-vendor environments.
- FIG. 8 shows an implementation example of an E2 node and RIC according to embodiments of the present disclosure.
- E2 nodes e.g., O-DU 820, O-CU 830
- RIC 810 are connected to a cloud platform 840 (e.g., open chassis and blade specification edge cloud). It can be virtualized and configured on a device (e.g., server).
- cloud platform 840 e.g., open chassis and blade specification edge cloud
- BBU functions e.g., server
- E2SM-RIC may be optimized for O-RAN deployment scenarios where Near-RT RIC, O-CU, and O-DU are implemented in the O-Cloud Platform.
- FIG. 9 shows examples of functional separation between a centralized unit (CU) 910 and the RIC 920 according to embodiments of the present disclosure.
- function separations may be performed according to deployment scenario #1 (900) or function deployment scenario #2 (950).
- Deployment Scenario #1 (900): RIC is located at a separate site or exists only as another NE, and several intelligence essential functions are replaced or recommended.
- Deployment Scenario #2 (950): RIC can replace almost all functions of CU except 3GPP I/F management.
- Figure 9 shows two scenarios, but other scenarios may also be applied.
- the mobility function may be performed by the RIC (920) rather than the CU (910).
- the UE context function may be performed by the RIC 920 rather than the CU 910.
- the session establishment function may be performed by the RIC (920) rather than the CU (910).
- FIG. 10 illustrates functional blocks of each Near-RT RIC and E2 node according to a subscription procedure, according to embodiments.
- the above subscription procedure refers to the RIC subscription procedure.
- the RIC subscription procedure can be used to establish E2 subscriptions consisting of an event trigger and a sequence of actions.
- O-RAN Working Group (WG) 3 Near-Real-time RAN Intelligent Controller Architecture & E2 General Aspects and Principles (E2GAP) specifications define Near-RT RIC as a service consumer and E2 nodes as service producers ( service producer). In order to receive services from Near-RT RIC, you can perform the RIC subscription process.
- the standard specifies that for the RIC subscription procedure, the Near-RT RIC transmits a RIC subscription request message.
- E2 node e.g., E2 node 610
- Near-RT RIC 1020 in FIG. 10 exemplifies the RIC (e.g., RIC 640) described through FIGS. 1 to 9.
- Near-RT RIC 1020 may transmit a RIC subscription request message (e.g., RIC SUBSCRIPTION REQUEST message) to the E2 node 1010.
- the RIC subscription request message may include information about RAN functions.
- the E2 node 1010 may transmit a RIC subscription response message (e.g., RIC SUBSCRIPTION RESPONSE message) to the Near-RT RIC 1020. If there is no error in the RIC subscription request message and the RAN function of the RIC subscription request message is supported, the E2 node (1010) can transmit a RIC subscription response message to the Near-RT RIC (1020). .
- the E2 node 1010 may transmit a RIC subscription failure message (e.g., RIC SUBSCRIPTION FAILURE message) to the Near-RT RIC (1020).
- a RIC subscription failure message e.g., RIC SUBSCRIPTION FAILURE message
- the subscription request message transmitted from the Near-RT RIC 1020 to the E2 node 1010 may include a RAN function and an event trigger definition related to the RAN function.
- the structure of the subscription request message is as shown in the table below.
- the structure of the subscription request message is as shown in the table below.
- the structure of the subscription request message is as shown in the table below.
- the structure of the subscription request message is as shown in the table below.
- An E2 setup procedure may be performed between the E2 node 1010 and the Near-RT RIC (1020).
- the E2 node 1010 may transmit an E2 SETUP REQUEST message to the Near-RT RIC 1020.
- Near-RT RIC (1020) may transmit an E2 SETUP RESPONSE message to the E2 node (1010).
- the E2 setup request message of the 'E2 setup procedure may include RAN function IDs (identifiers).
- the E2 setup request message may include a RAN Function Definition corresponding to the RAN Function ID corresponding to each RAN Function ID.
- the RAN function definition may include a description of the RAN function.
- RAN functions may be specific to the E2 service model. Thereafter, in the procedure, the RAN function may be indicated through the RAN function ID.
- a subscription procedure may be performed to provide service.
- the Near-RT RIC (1020) can subscribe to the service provided by the E2 node (1010).
- Near-RT RIC (1020) can subscribe to a service corresponding to the RAN function ID.
- Near-RT RIC 1020 may store multiple subscriptions corresponding to a RAN function ID. Each subscription may correspond to one RIC Request ID.
- RIC Request ID is a local identifier used by Near-RT RIC 1020 to identify a specific RIC subscription procedure.
- the E2 node 1010 may perform one or more subscription procedures with the communication block 1023 of the Near-RT RIC 1020 through the communication block 1013.
- a network element such as the E2 node 1010 or the Near-RT RIC 1020, may be implemented by hardware or in the cloud through software.
- the software function block corresponding to the E2 node 1010 may operate through the cloud, as shown in FIG. 8.
- the E2 node 1010 may store subscription information in a database (DB).
- DB database
- a functional block corresponding to the Near-RT RIC 1020 e.g., a subscription manager of the Near-RT RIC 1020
- Near-RT RIC (1020) can store subscription information in the DB.
- the E2 node 1010 can obtain the stored subscription information. If a procedure is in progress between the Near-RT RIC (1020) and the E2 node (1010) while the E2 node (1010) is OFF, there is a mismatch between the subscription information of the E2 node (1010) and the subscription information of the Near-RT RIC (1020). may occur.
- the E2 node (1010) may re-perform the reset procedure or E2 setup procedure. However, after the E2 setup procedure, procedures performed repeatedly to join the RIC may act as resource overhead on the E2 interface.
- the functional block corresponding to the Near-RT RIC (1020) e.g., subscription manager of the Near-RT RIC (1020)
- the E2 node 1010 or Near-RT RIC 1020 may re-perform the reset procedure or E2 setup procedure.
- procedures performed repeatedly to join the RIC may act as resource overhead on the E2 interface.
- the E2 node 1010 may initiate a subscription check procedure.
- the inspection procedure initiated by E2 node 1010 is described in detail through Figure 11A.
- the Near-RT RIC 1020 may initiate a subscription check procedure to compare the subscription status of the Near-RT RIC 1020 with the subscription status of the E2 node 1010.
- the subscription process initiated by Near-RT RIC 1020 is described in detail through Figure 11A.
- Figure 11A shows an example of a subscription audit procedure between a Near-RT RIC and an E2 node, according to one embodiment.
- the Near-RT RIC 1020 may transmit an audit request message to the E2 node 1010.
- the inspection request message may include an ID (e.g., transaction ID) to identify the audit procedure.
- ID e.g., transaction ID
- a transaction ID may uniquely identify a procedure among all ongoing parallel procedures of the same type initiated by the same protocol peer. Messages belonging to the same procedure can use the same transaction ID.
- the transaction ID may be determined by the initiating peer of the procedure.
- the transaction ID may be determined by Near-RT RIC 1020.
- the inspection request message may have the format shown in the table below.
- 'M' stands for 'mandatory' and 'O' stands for 'optional'.
- the E2 node 1010 may transmit an audit response message to the Near-RT RIC 1020.
- the test response message includes an ID to identify the test procedure (e.g., transaction ID), a RAN function ID (e.g., RIC Function ID in Tables 1 to 4), and a RIC request ID (e.g., RIC Request in Tables 1 to 4). ID) may be included.
- the test response message may be a response to the test request message.
- the inspection response message may include the transaction ID of the inspection request message.
- RAN Function ID and RIC Request ID may be used to identify the subscription process.
- the check response message may include one or more subscription information. Each subscription information may correspond to a subscription procedure. Each subscription information may include a RAN function ID and a RIC request ID.
- the check response message may include a set of RAN function ID and RIC request ID.
- the test response message may have the format shown in the table below.
- 'M' stands for 'mandatory' and 'O' stands for 'optional'.
- 'maxofRICRequestID' may mean the maximum number of RIC subscription requests to the E2 node (1010) supported by the Near-RT RIC (1020). For example, 'maxofRICRequestID' could be 1024.
- the IE for 'Message Type' in Tables 5 and 6 may have the format as shown in the table below.
- 'M' stands for 'mandatory' and 'O' stands for 'optional'.
- the Near-RT RIC (1020) can obtain subscription status related to the E2 node (1010) by performing an inspection request.
- the Near-RT RIC (1020) can compare the subscription information of the E2 node (1010) with the subscription information of the Near-RT RIC (1020) through the check response message. If a discrepancy occurs as a result of the comparison, the Near-RT RIC (1020) may delete the subscription information according to the discrepancy or perform a deletion request procedure. According to one embodiment, the Near-RT RIC (1020) may delete the subscription information of the Near-RT RIC (1020) that does not match the subscription information of the E2 node (1010) from the internal block.
- the Near-RT RIC (1020) may transmit a request message for deletion of specific subscription information to the E2 node (1010). Additionally, according to one embodiment, Near-RT RIC 1020 may perform a RIC subscription procedure corresponding to deleted RIC subscription information.
- the Near-RT RIC (1020) may transmit to the E2 node (1010) the check request message to indicate what subscription information to request.
- the inspection request message may include one or more subscription information.
- Each subscription information may correspond to a subscription procedure.
- Each subscription information may include a RAN function ID and/or RIC request ID.
- the inspection request message may have a format as shown in the table below.
- ‘RIC subscription List’ IE may indicate a list of RIC subscription(s) for requesting subscription inspection.
- ‘RIC Request ID’ IE may indicate the RIC request ID.
- ‘RAN Function ID’ IE may indicate the RAN function ID.
- ‘RAN Function Revision’ IE may represent a revision counter. Although described as ‘M’ in the table above, ‘RAN Function Revision’ IE may be omitted.
- the E2 node 1010 may transmit a subscription response message to the Near-RT RIC 1020 in response to the subscription request message of the Near-RT RIC 1020.
- the subscription response message may include a response result to the requested subscription information.
- the subscription response message may include subscription information mapped in the E2 node 1010.
- the subscription response message may include unknown subscription information indicating subscriptions that have not been confirmed by the E2 node 1010.
- the subscription response message may include subscription information missing from the E2 node 1010.
- the test response message may have a format as shown in the table below.
- ‘Mapped Subscription List’ IE can display the mapped subscription information.
- the mapped subscription information may indicate subscriptions for which mapping to the RAN function ID and RIC request ID in the E2 node 1010 has been confirmed among subscriptions for which inspection has been requested.
- ‘Unknown Subscription List’ IE can display the unknown subscription information.
- the unknown subscription information may indicate subscriptions that are difficult to confirm because they are not stored in the E2 node 1010 among subscriptions for which inspection has been requested.
- the E2 node 1010 may transmit a subscription response message including a RAN function ID and RIC request ID for each subscription, which are difficult to confirm, to the Near-RT RIC 1020.
- ‘Missed Subscription List’ IE can indicate the missing subscription information.
- the missing subscription information may indicate subscriptions that are inaccurate because the information stored in the E2 node 1010 is different from the requested information among subscriptions for which inspection has been requested.
- the E2 node 1010 compares the subscription information of the E2 node 1010 with the subscription information of the Near-RT RIC 1020, and sends a subscription response message containing the subscription information of the subscription in which the discrepancy occurred as a subscription response message. Can be transmitted to Near-RT RIC (1020).
- the subscription information may include a RAN function ID and RIC request ID for each inconsistent subscription.
- FIG. 11B shows an example of a subscription check procedure between a Near-RT RIC and an E2 node, according to one embodiment.
- the E2 node 1010 may transmit an audit request message to the Near-RT RIC 1020.
- the inspection request message may include an ID (e.g., transaction ID) to identify the audit procedure.
- ID e.g., transaction ID
- a transaction ID may uniquely identify a procedure among all ongoing parallel procedures of the same type initiated by the same protocol peer. Messages belonging to the same procedure can use the same transaction ID.
- the transaction ID may be determined by the initiating peer of the procedure.
- the transaction ID may be determined by E2 node 1010.
- the inspection request message may have the format shown in the table below.
- 'M' stands for 'mandatory' and 'O' stands for 'optional'.
- the Near-RT RIC 1020 may transmit an audit response message to the E2 node 1010.
- the test response message includes an ID to identify the test procedure (e.g., transaction ID), a RAN function ID (e.g., RIC Function ID in Tables 1 to 4), and a RIC request ID (e.g., RIC Request in Tables 1 to 4). ID) may be included.
- the test response message may be a response to the test request message.
- the inspection response message may include the transaction ID of the inspection request message.
- RAN Function ID and RIC Request ID may be used to identify the subscription process.
- the check response message may include one or more subscription information. Each subscription information may correspond to a subscription procedure. Each subscription information may include a RAN function ID and a RIC request ID.
- the check response message may include a set of RAN function ID and RIC request ID.
- the test response message may have the format shown in the table below.
- 'M' stands for 'mandatory' and 'O' stands for 'optional'.
- 'maxofRICRequestID' may mean the maximum number of RIC subscription requests to the E2 node (1010) supported by the Near-RT RIC (1020). For example, 'maxofRICRequestID' could be 1024.
- the IE for 'Message Type' in Tables 8 and 9 may have the same format as Table 7.
- the E2 node 1010 can obtain the subscription status of the Near-RT RIC (1020) by performing an inspection request.
- the E2 node 1010 can compare the subscription information of the E2 node 1010 with the subscription information of the Near-RT RIC 1020 through the check response message from the Near-RT RIC 1020. If a discrepancy occurs as a result of the comparison, the E2 node 1010 may delete the subscription information according to the discrepancy or perform a delete required procedure. According to one embodiment, the E2 node 1010 may delete the subscription information of the E2 node 1010 that does not match the subscription information of the Near-RT RIC 1020 from the internal block.
- the E2 node 1010 sends a delete required message to the Near-RT RIC 1020 to request deletion of the RIC subscription(s) existing in the E2 node 1010. Can be transmitted. Additionally, according to one embodiment, Near-RT RIC 1020 may perform a RIC subscription procedure corresponding to deleted RIC subscription information.
- the E2 node 1010 may transmit the check request message to the Near-RT RIC 1020 to indicate what subscription information to request.
- the inspection request message may include one or more subscription information.
- Each subscription information may correspond to a subscription procedure.
- Each subscription information may include a RAN function ID and/or RIC request ID.
- the inspection request message may have a format as shown in the table below.
- ‘RIC subscription List’ IE may indicate a list of RIC subscription(s) for requesting subscription inspection.
- ‘RIC Request ID’ IE may indicate the RIC request ID.
- ‘RAN Function ID’ IE may indicate the RAN function ID.
- ‘RAN Function Revision’ IE may represent a revision counter. Although described as ‘M’ in the table above, ‘RAN Function Revision’ IE may be omitted.
- the Near-RT RIC (1020) may transmit a subscription response message to the E2 node (1010) in response to the subscription request message of the E2 node (1010).
- the subscription response message may include a response result to the requested subscription information.
- the subscription response message may include subscription information mapped in the Near-RT RIC (1020).
- the subscription response message may include unknown subscription information indicating subscriptions that have not been confirmed by the Near-RT RIC 1020.
- the subscription response message may include subscription information missing from the Near-RT RIC (1020).
- the test response message may have a format as shown in the table below.
- ‘Mapped Subscription List’ IE can display the mapped subscription information.
- the mapped subscription information may indicate subscriptions for which mapping to a RAN function ID and RIC request ID has been confirmed in the Near-RT RIC (1020) among subscriptions for which inspection has been requested.
- ‘Unknown Subscription List’ IE can display the unknown subscription information.
- the unknown subscription information may indicate subscriptions that are difficult to confirm because they are not stored in the Near-RT RIC (1020) among subscriptions for which inspection has been requested.
- Near-RT RIC (1020) may transmit a subscription response message including a RAN function ID and RIC request ID for each subscription that are difficult to confirm to the E2 node (1010).
- ‘Missed Subscription List’ IE can indicate the missing subscription information.
- the missing subscription information may indicate subscriptions that, among subscriptions for which inspection has been requested, are inaccurate because the information stored in the Near-RT RIC 1020 is different from the requested information.
- the Near-RT RIC (1020) compares the subscription information of the Near-RT RIC (1020) with the subscription information of the E2 node (1010) and sends a subscription response message containing the subscription information of the subscription where the mismatch occurred.
- a response message can be transmitted to the E2 node (1010).
- the subscription information may include a RAN function ID and RIC request ID for each inconsistent subscription.
- Figure 12A shows an example of a subscription check procedure triggered by activity time, according to one embodiment.
- Activity time may refer to the time period of periodic signaling or the length of a timer indicating inactivity.
- an E2 setup procedure may be performed.
- the E2 node 1010 may transmit an E2 setup request message to the Near-RT RIC (1020).
- Near-RT RIC (1020) can receive an E2 setup response message from the E2 node (1010).
- One or more RAN functions may be configured in the E2 node 1010 through the E2 setup procedure.
- Near-RT RIC (1020) can subscribe to services corresponding to RAN functions through the RIC subscription procedure.
- the Near-RT RIC (1020) may perform the first RIC subscription procedure (1221) with the E2 node (1010).
- Near-RT RIC 1020 may transmit a subscription request message including a first RAN ID and a first RIC request ID to the E2 node 1010.
- Near-RT RIC (1020) may receive a subscription response message from the E2 node (1010).
- the subscription response message may include the first RAN ID and the first RIC request ID.
- Near-RT RIC (1020) can perform a second RIC subscription procedure (1223) with the E2 node (1010).
- Near-RT RIC 1020 may transmit a subscription request message including a second RAN ID and a second RIC request ID to the E2 node 1010.
- Near-RT RIC (1020) may receive a subscription response message from the E2 node (1010).
- the subscription response message may include the second RAN ID and the second RIC request ID.
- a specified amount of time may elapse from the most recently performed signaling.
- a RIC subscription check procedure may be performed.
- the most recently performed signaling may include the last transmitted or received message among all procedures related to RIC subscriptions.
- Near-RT RIC 1020 may periodically perform a RIC subscription check procedure. That is, the Near-RT RIC 1020 can identify that the specified time (e.g., timer) has elapsed after finally transmitting the RIC subscription inspection request message. Near-RT RIC 1020 may start a timer when transmitting the inspection request message.
- Near-RT RIC 1020 may be configured to perform periodic reporting.
- E2 node 1010 may identify that the specified time has elapsed since the last report of Near-RT RIC 1020.
- E2 node 1010 may trigger the RIC subscription check procedure.
- the E2 node 1010 may use a timer for operation time. When E2 node 1010 receives the message, it can start a timer. For example, E2 node 1010 may restart the timer each time it receives a message. E2 node 1010 may trigger the RIC subscription check procedure when the timer elapses. For another example, when the Near-RT RIC 1020 receives (upon) a test response message for the test request message, it can stop the timer and end the audit procedure.
- a RIC subscription check procedure may be performed.
- E2 node 1010 may initiate a RIC subscription check procedure based on identifying that a specified amount of time has elapsed from signaling.
- the E2 node 1010 may transmit a RIC subscription check request message to the Near-RT RIC 1020.
- the Near-RT RIC 1020 may transmit a RIC subscription check response message to the E2 node 1010.
- Table 6, Table 9, Table 11, or Table 13 may be referred to.
- the RIC subscription check response message may include information about one or more RIC subscriptions (eg, RIC subscription list).
- the RIC subscription check response message includes the first RAN function ID and the first RIC request ID of the first RIC subscription procedure 1221 and the second RAN function ID and the second RIC of the second RIC subscription procedure 1223. May include a request ID.
- Near-RT RIC 1020 may initiate a subscription check procedure.
- the Near-RT RIC 1020 which has not received a RIC indication for the given period of time, may initiate a subscription check procedure.
- Figure 12B shows an example of a subscription check procedure initiated based on an event, according to one embodiment.
- an E2 setup procedure may be performed.
- the E2 node 1010 may transmit an E2 setup request message to the Near-RT RIC (1020).
- Near-RT RIC (1020) can receive an E2 setup response message from the E2 node (1010).
- One or more RAN functions may be configured in the E2 node 1010 through the E2 setup procedure.
- Near-RT RIC (1020) can subscribe to services corresponding to RAN functions through the RIC subscription procedure.
- the Near-RT RIC 1020 may perform the first RIC subscription procedure 1271 with the E2 node 1010.
- Near-RT RIC 1020 may transmit a subscription request message including a first RAN ID and a first RIC request ID to the E2 node 1010.
- Near-RT RIC (1020) may receive a subscription response message from the E2 node (1010).
- the subscription response message may include the first RAN ID and the first RIC request ID.
- Near-RT RIC (1020) can perform the second RIC subscription procedure (1273) with the E2 node (1010).
- Near-RT RIC 1020 may transmit a subscription request message including a second RAN ID and a second RIC request ID to the E2 node 1010.
- Near-RT RIC (1020) may receive a subscription response message from the E2 node (1010).
- the subscription response message may include the second RAN ID and the second RIC request ID.
- a specific event may occur. Specific events may include the fulfillment of conditions to trigger the RIC subscription inspection process.
- Near-RT RIC 1020 may identify the specific event. For example, Near-RT RIC 1020 may identify that at least one functional block of Near-RT RIC 1020 changes from an inactive state to an active state. Near-RT RIC 1020 may initiate a subscription check procedure instead of a reset procedure. Additionally, for example, the Near-RT RIC 1020 may identify that indication information is received from the E2 node 1010 or another entity.
- the indication information may include status information about the RIC subscription(s), status information of the Near-RT RIC 1020 (e.g., error, reactivation, memory reallocation), or status information of the E2 node 1010 (e.g., may include at least one of error, reactivation, and memory reallocation).
- Near-RT RIC 1020 may initiate a subscription check procedure.
- the Near-RT RIC 1020 may identify that it does not receive a subscription response message or a subscription failure message corresponding to the transmission of the subscription request message within a certain period of time after transmitting the subscription request message. You can.
- Near-RT RIC 1020 may initiate a subscription check procedure before performing the RIC subscription delete procedure.
- the RIC subscription check procedure initiated by the Near-RT RIC 1020 is illustrated, but the RIC subscription check procedure may also be initiated by the E2 node 1010.
- the E2 node 1010 can detect the occurrence of a specific event in the same way.
- Near-RT RIC 1020 may be replaced with E2 node 1010.
- a RIC subscription check procedure may be performed.
- Near-RT RIC 1020 may initiate a RIC subscription check procedure based on identifying the occurrence of a specific event.
- the Near-RT RIC 1020 may transmit a RIC subscription check request message to the E2 node 1010.
- the E2 node 1010 may transmit a RIC subscription check response message to the Near-RT RIC 1020.
- the RIC subscription check response message may include information about one or more RIC subscriptions (eg, RIC subscription list).
- the RIC subscription check response message includes the first RAN function ID and the first RIC request ID of the first RIC subscription procedure 1271 and the second RAN function ID and the second RIC of the second RIC subscription procedure 1273. May include request ID.
- FIG. 12B a subscription check procedure initiated by the Near-RT RIC 1020 is illustrated, but embodiments of the present disclosure are not limited thereto. According to one embodiment, based on identifying the occurrence of a specific event, E2 node 1010 may initiate a subscription check procedure.
- FIG. 13 shows an example of subscription management using a subscription check procedure, according to one embodiment.
- the inspection procedure or periodic inspection procedure according to rebooting of the subscription manager of the Near-RT RIC (e.g., Near-RT RIC (1020)) is described.
- RIC subscriptions may be established through one or more subscription procedures between the Near-RT RIC 1020 and the E2 node (e.g., the E2 node 1010).
- the E2 node 1010 has subscription information 1310-a.
- Subscription information 1310-a may include information about one or more RIC subscriptions.
- RIC subscription can be specified by RAN function ID (i.e., RAN Function ID) and RIC request ID (i.e., RIC Request ID).
- the subscription information 1310-a of the E2 node 1010 may include information about three RIC subscriptions.
- the subscription information 1310-a of the E2 node 1010 includes [ ⁇ RIC Request ID: 1, RAN Function ID: 1 ⁇ , ⁇ RIC Request ID: 3, RAN Function ID: 2 ⁇ , ⁇ RIC Request ID: 4, It may contain a list consisting of [RAN Function ID: 4 ⁇ ].
- Near-RT RIC 1020 has subscription information 1320-a.
- Subscription information 1320-a may include information about one or more RIC subscriptions.
- RIC subscription can be specified by RAN function ID (i.e., RAN Function ID) and RIC request ID (i.e., RIC Request ID).
- the subscription information 1320-a of the Near-RT RIC 1020 may include information about four RIC subscriptions.
- the subscription information (1320-a) of Near-RT RIC (1020) is [ ⁇ RIC Request ID: 1, RAN Function ID: 1 ⁇ , ⁇ RIC Request ID: 2, RAN Function ID: 1 ⁇ , ⁇ RIC Request ID: 3, RAN Function ID: 2 ⁇ , ⁇ RIC Request ID: 4, RAN Function ID: 4 ⁇ ].
- the Near-RT RIC 1020 may transmit a RIC subscription check request ('AUDIT REQUEST') message to the E2 node 1010. Based on configuration information for RIC subscription check (e.g., elapse of a certain time in FIG. 12A or occurrence of a specific event in FIG. 12B), Near-RT RIC (1020) can initiate the subscription check procedure. .
- configuration information for RIC subscription check e.g., elapse of a certain time in FIG. 12A or occurrence of a specific event in FIG. 12B
- Near-RT RIC (1020) can initiate the subscription check procedure. .
- Tables 5 to 8 may be referred to.
- Near-RT RIC 1020 may transmit a RIC subscription check request message including a transaction ID indicating '3'.
- the Near-RT RIC 1020 may transmit a RIC subscription check request message containing information indicating subscription information 1320-a of the Near-RT RIC 1020.
- the E2 node 1010 may transmit a RIC subscription check response ('AUDIT RESPONSE') message to the Near-RT RIC 1020.
- a RIC subscription check response ('AUDIT RESPONSE') message to the Near-RT RIC 1020.
- Tables 5 to 9 may be referred to.
- E2 node 1010 may transmit a RIC subscription check response message including a transaction ID indicating '3'.
- the E2 node 1010 may include the subscription information 1310-a of the E2 node 1010 in the RIC subscription check response message.
- the RIC subscription check response message is [ ⁇ RIC Request ID: 1, RAN Function ID: 1 ⁇ , ⁇ RIC Request ID: 3, RAN Function ID: 2 ⁇ , ⁇ RIC Request ID: 4, RAN Function ID: 4 ⁇ ] It may contain a composed list.
- Near-RT RIC 1020 may obtain subscription information 1310-a of the E2 node 1010 from the RIC subscription check response message.
- the Near-RT RIC 1020 may compare the subscription information 1310-a of the E2 node 1010 and the subscription information 1320-a of the Near-RT RIC 1020.
- the Near-RT RIC 1020 may identify that the subscription information 1320-a of the Near-RT RIC 1020 is inconsistent with the subscription information 1310-a of the E2 node 1010.
- the subscription information (1320-a) of the Near-RT RIC (1020) corresponds to 'RIC Request ID: 2' compared to the subscription information (1310-a) of the E2 node (1010). It can be identified that it further includes RIC membership.
- Near-RT RIC 1020 may delete the RIC subscription corresponding to 'RIC Request ID: 2' and 'RIC Request ID: 2'.
- the subscription information (1310-b) of the E2 node 1010 is [ ⁇ RIC Request ID: 1, RAN Function ID: 1 ⁇ , ⁇ RIC Request ID: 3, RAN Function ID: 2 ⁇ , ⁇ RIC Request ID: 4, It may contain a list consisting of [RAN Function ID: 4 ⁇ ].
- subscription information 1320-a of the Near-RT RIC 1020 may be updated with subscription information 1320-b.
- the subscription information (1320-b) of Near-RT RIC (1020) is [ ⁇ RIC Request ID: 1, RAN Function ID: 1 ⁇ , ⁇ RIC Request ID: 3, RAN Function ID: 2 ⁇ , ⁇ RIC Request ID: 4, RAN Function ID: 4 ⁇ ].
- a procedure for matching the subscription information of the E2 node 1010 and the subscription information of the Near-RT RIC (1020) is described.
- the RIC subscription procedure corresponding to 'RIC Request ID: 2' deleted due to mismatch that is, the RIC subscription procedure, may be additionally performed.
- Near-RT RIC (1020) is based on RIC subscription information (e.g., 'RIC Request ID: 2', RAN Function ID: 1) registered in the subscription manager of Near-RT RIC (1020), You can perform the RIC membership process.
- Near-RT RIC 1020 may transmit a RIC subscription request message (e.g., RIC SUBSCRIPTION REQUEST message) containing RIC subscription information corresponding to 'RIC Request ID: 2'.
- the RIC subscription request message may include information about the RAN function (e.g., RAN Function ID: 1).
- the E2 node 1010 may transmit a RIC subscription response message (e.g., RIC SUBSCRIPTION RESPONSE message) to the Near-RT RIC 1020.
- FIG. 14 illustrates an example of subscription management using a subscription check procedure, according to one embodiment.
- the inspection procedure or periodic inspection procedure according to the reboot of the subscription manager of the Near-RT RIC e.g., the Near-RT RIC 1020
- Near-RT RIC (1020) and the E2 node RIC subscriptions may be established through one or more subscription procedures between (e.g., E2 node 1010).
- E2 node 1010 has subscription information 1410-a.
- Subscription information 1410-a may include information about one or more RIC subscriptions.
- RIC subscription can be specified by RAN function ID (i.e., RAN Function ID) and RIC request ID (i.e., RIC Request ID).
- the subscription information 1410-a of the E2 node 1010 may include information about four RIC subscriptions.
- the subscription information 1410-a of the E2 node 1010 is [ ⁇ RIC Request ID: 1, RAN Function ID: 1 ⁇ , ⁇ RIC Request ID: 2, RAN Function ID: 1 ⁇ , ⁇ RIC Request ID: 3, It may include a list consisting of RAN Function ID: 2 ⁇ , ⁇ RIC Request ID: 4, RAN Function ID: 4 ⁇ ].
- Near-RT RIC 1020 has subscription information 1420-a.
- Subscription information 1420-a may include information about one or more RIC subscriptions.
- RIC subscription can be specified by RAN function ID (i.e., RAN Function ID) and RIC request ID (i.e., RIC Request ID).
- the subscription information 1420-a of the Near-RT RIC 1020 may include information about three RIC subscriptions.
- the subscription information (1420-a) of Near-RT RIC (1020) is [ ⁇ RIC Request ID: 1, RAN Function ID: 1 ⁇ , ⁇ RIC Request ID: 3, RAN Function ID: 2 ⁇ , ⁇ RIC Request ID: 4, RAN Function ID: 4 ⁇ ].
- the Near-RT RIC 1020 may transmit a RIC subscription check request ('AUDIT REQUEST') message to the E2 node 1010. Based on configuration information for RIC subscription check (e.g., elapse of a certain time in FIG. 12A or occurrence of a specific event in FIG. 12B), Near-RT RIC 1020 can initiate a subscription check procedure.
- RIC subscription check request message Table 5, Table 8, Table 10, or Table 12 may be referred to.
- Near-RT RIC 1020 may transmit a RIC subscription check request message including a transaction ID indicating '3'.
- the E2 node 1010 may transmit a RIC subscription check response ('AUDIT RESPONSE') message to the Near-RT RIC 1020.
- a RIC subscription check response For the RIC subscription check response message, Table 6, Table 9, Table 11, or Table 13 may be referred to.
- E2 node 1010 may transmit a RIC subscription check response message including a transaction ID indicating '3'.
- the E2 node 1010 may include the subscription information 1410-a of the E2 node 1010 in the RIC subscription check response message.
- the RIC subscription check response message is [ ⁇ RIC Request ID: 1, RAN Function ID: 1 ⁇ , ⁇ RIC Request ID: 2, RAN Function ID: 1 ⁇ , ⁇ RIC Request ID: 3, RAN Function ID: 2 ⁇ , ⁇ It may include a list consisting of [RIC Request ID: 4, RAN Function ID: 4 ⁇ ].
- Near-RT RIC 1020 may obtain subscription information 1410-a of the E2 node 1010 from the RIC subscription check response message.
- the Near-RT RIC 1020 may compare the subscription information 1410-a of the E2 node 1010 and the subscription information 1420-a of the Near-RT RIC 1020.
- the Near-RT RIC 1020 may identify that the subscription information 1420-a of the Near-RT RIC 1020 is inconsistent with the subscription information 1410-a of the E2 node 1010.
- the subscription information (1420-a) of the Near-RT RIC (1020) corresponds to 'RIC Request ID: 2' compared to the subscription information (1410-a) of the E2 node (1010).
- Near-RT RIC (1020) may request the E2 node (1010) to delete the RIC subscription corresponding to 'RIC Request ID: 2'.
- Near-RT RIC (1020) can perform a RIC Subscription Delete procedure with the E2 node (1010).
- the Near-RT RIC 1020 may transmit a subscription deletion request ('RIC SUBSCRIPTION DELETE REQUEST') message to the E2 node 1010.
- the subscription deletion request message may include inconsistent subscription information.
- the subscription deletion request message may include a RIC request ID and a RAN function ID.
- the subscription deletion request message may have the format of the table below.
- the RIC Request ID of the subscription deletion request message may indicate '2'
- the RAN Function ID of the subscription deletion request message may indicate '1'.
- IE for 'Message Type' may have the format shown in Table 7.
- the E2 node 1010 may delete the RIC subscription corresponding to 'RIC Request ID: 2' and 'RIC Request ID: 2'.
- the E2 node 1010 can determine a target function using information in the RAN Function ID and delete the corresponding RIC event trigger using information in the RIC Request ID.
- subscription information 1410-a of the E2 node 1010 may be updated with subscription information 1410-b.
- the E2 node 1010 may transmit a subscription deletion response ('RIC SUBSCRIPTION DELETE RESPONSE') message to the Near-RT RIC 1020.
- the subscription deletion response message can be used to accept a request from the Near-RT RIC 1020 and delete an existing subscription in the E2 node 1010.
- the subscription deletion response message may have the format of the table below.
- the RIC Request ID of the subscription deletion response message may indicate '2'
- the RAN Function ID of the subscription deletion response message may indicate '1'.
- IE for 'Message Type' may have the format shown in Table 7.
- the subscription information (1410-b) of the E2 node 1010 is [ ⁇ RIC Request ID: 1, RAN Function ID: 1 ⁇ , ⁇ RIC Request ID: 3, RAN Function ID: 2 ⁇ , ⁇ RIC Request ID: 4, It may contain a list consisting of [RAN Function ID: 4 ⁇ ].
- the subscription information (1420-b) of Near-RT RIC (1020) is [ ⁇ RIC Request ID: 1, RAN Function ID: 1 ⁇ , ⁇ RIC Request ID: 3, RAN Function ID: 2 ⁇ , ⁇ RIC Request ID: 4, RAN Function ID: 4 ⁇ ].
- FIG. 15 shows an example of subscription management using a subscription check procedure, according to one embodiment.
- a test procedure or a periodic test procedure according to rebooting of a software block of an E2 node (e.g., E2 node 1010) is described.
- RIC subscriptions may be established through one or more subscription procedures between the E2 node 1010 and the Near-RT RIC (e.g., Near-RT RIC 1020).
- E2 node 1010 has subscription information 1510-a.
- Subscription information 1510-a may include information about one or more RIC subscriptions.
- RIC subscription can be specified by RAN function ID (i.e., RAN Function ID) and RIC request ID (i.e., RIC Request ID).
- the subscription information 1510-a of the E2 node 1010 may include information about three RIC subscriptions.
- the subscription information 1510-a of the E2 node 1010 includes [ ⁇ RIC Request ID: 1, RAN Function ID: 1 ⁇ , ⁇ RIC Request ID: 3, RAN Function ID: 2 ⁇ , ⁇ RIC Request ID: 4, It may contain a list consisting of [RAN Function ID: 4 ⁇ ].
- Near-RT RIC 1020 has subscription information 1520-a.
- Subscription information 1520-a may include information about one or more RIC subscriptions.
- RIC subscription can be specified by RAN function ID (i.e., RAN Function ID) and RIC request ID (i.e., RIC Request ID).
- the subscription information 1520-a of the Near-RT RIC 1020 may include information about four RIC subscriptions.
- the subscription information (1520-a) of Near-RT RIC (1020) is [ ⁇ RIC Request ID: 1, RAN Function ID: 1 ⁇ , ⁇ RIC Request ID: 2, RAN Function ID: 1 ⁇ , ⁇ RIC Request ID: 3, RAN Function ID: 2 ⁇ , ⁇ RIC Request ID: 4, RAN Function ID: 4 ⁇ ].
- the E2 node 1010 may transmit a RIC subscription check request ('AUDIT REQUEST') message to the Near-RT RIC 1020.
- a RIC subscription check request ('AUDIT REQUEST') message to the Near-RT RIC 1020.
- configuration information for RIC subscription check e.g., elapse of a certain time in FIG. 12A or occurrence of a specific event in FIG. 12B
- Near-RT RIC 1020 can initiate a subscription check procedure.
- Table 5, Table 8, Table 10, or Table 12 may be referred to.
- Near-RT RIC 1020 may transmit a RIC subscription check request message including a transaction ID indicating '3'.
- the Near-RT RIC 1020 may transmit a RIC subscription check response ('AUDIT RESPONSE') message to the E2 node 1010.
- a RIC subscription check response 'AUDIT RESPONSE'
- Table 6, Table 9, Table 11, or Table 13 may be referred to.
- Near-RT RIC 1020 may transmit a RIC subscription check response message including a transaction ID indicating '3'.
- Near-RT RIC 1020 may include subscription information 1520-a of Near-RT RIC 1020 in the RIC subscription check response message.
- the RIC subscription check response message is [ ⁇ RIC Request ID: 1, RAN Function ID: 1 ⁇ , ⁇ RIC Request ID: 2, RAN Function ID: 1 ⁇ , ⁇ RIC Request ID: 3, RAN Function ID: 2 ⁇ , ⁇ It may include a list consisting of [RIC Request ID: 4, RAN Function ID: 4 ⁇ ].
- the E2 node 1010 may obtain subscription information 1520-a of the Near-RT RIC 1020 from the RIC subscription check response message.
- the E2 node 1010 may compare the subscription information 1510-a of the E2 node 1010 and the subscription information 1520-a of the Near-RT RIC 1020.
- the E2 node 1010 may identify that the subscription information 1520-a of the Near-RT RIC 1020 does not match the subscription information 1510-a of the E2 node 1010.
- the subscription information (1520-a) of the Near-RT RIC (1020) compared to the subscription information (1510-a) of the E2 node (1010) is the RIC corresponding to 'RIC Request ID: 2'. It is possible to identify points that further include subscriptions.
- the E2 node 1010 may transmit a subscription deletion request ('RIC SUBSCRIPTION DELETE REQUIRED') message to the Near-RT RIC 1020.
- the subscription deletion request message allows the E2 node 1010 to request deletion of the existing RIC subscription(s) of the E2 node 1010, previously created for the Near-RT RIC 1020 ( enable) can be used.
- the subscription deletion request message may include inconsistent subscription information.
- the subscription deletion request message may include a RIC request ID and a RAN function ID.
- the subscription deletion request message may include information on the cause for each RIC subscription requesting removal.
- the subscription deletion request message may have the format of the table below.
- the RIC Request ID of the subscription deletion request message may indicate '2'
- the RAN Function ID of the subscription deletion request message may indicate '1'.
- IE for 'Message Type' may have the format shown in Table 7.
- 'Cause' IE may refer to Table 17 below.
- the Near-RT RIC 1020 may transmit a subscription deletion request ('RIC SUBSCRIPTION DELETE REQUEST') message to the E2 node 1010.
- the subscription deletion request message may include inconsistent subscription information.
- the subscription deletion request message may include a RIC request ID and a RAN function ID.
- the subscription deletion request message may have the format of Table 14.
- the RIC Request ID of the subscription deletion request message may indicate '2', and the RAN Function ID of the subscription deletion request message may indicate '1'.
- the E2 node 1010 may transmit a 'RIC SUBSCRIPTION DELETE FAILURE' message to the Near-RT RIC 1020.
- the subscription deletion response message may have the format of Table 11.
- the RIC Request ID of the subscription deletion response message may indicate '2'
- the RAN Function ID of the subscription deletion response message may indicate '1'.
- the subscription deletion failure message may include reason information.
- the reason information is 'Cause' IE, and Table 13 may be referred to.
- the E2 node 1010 may transmit a subscription deletion failure message including reason information set to 'RIC Request ID unknown' to the Near-RT RIC 1020.
- Near-RT RIC 1020 may delete the RIC subscription corresponding to 'RIC Request ID: 2' and 'RIC Request ID: 2'.
- the subscription information (1510-b) of the E2 node 1010 is [ ⁇ RIC Request ID: 1, RAN Function ID: 1 ⁇ , ⁇ RIC Request ID: 3, RAN Function ID: 2 ⁇ , ⁇ RIC Request ID: 4, It may contain a list consisting of [RAN Function ID: 4 ⁇ ].
- subscription information 1520-a of the Near-RT RIC 1020 may be updated to subscription information 1520-b.
- the subscription information (1520-b) of Near-RT RIC (1020) is [ ⁇ RIC Request ID: 1, RAN Function ID: 1 ⁇ , ⁇ RIC Request ID: 3, RAN Function ID: 2 ⁇ , ⁇ RIC Request ID: 4, RAN Function ID: 4 ⁇ ].
- FIG. 15 a procedure for matching the subscription information of the E2 node 1010 and the subscription information of the Near-RT RIC (1020) is described.
- the RIC subscription procedure corresponding to 'RIC Request ID: 2' deleted due to mismatch that is, the RIC subscription procedure, may be additionally performed.
- Near-RT RIC (1020) is based on RIC subscription information (e.g., 'RIC Request ID: 2', RAN Function ID: 1) registered in the subscription manager of Near-RT RIC (1020), You can perform the RIC membership process.
- Near-RT RIC 1020 may transmit a RIC subscription request message (e.g., RIC SUBSCRIPTION REQUEST message) containing RIC subscription information corresponding to 'RIC Request ID: 2'.
- the RIC subscription request message may include information about the RAN function (e.g., RAN Function ID: 1).
- the E2 node 1010 may transmit a RIC subscription response message (e.g., RIC SUBSCRIPTION RESPONSE message) to the Near-RT RIC 1020.
- FIG. 16 illustrates an example of subscription management using a subscription check procedure, according to one embodiment.
- a test procedure or a periodic test procedure according to rebooting of a software block of an E2 node (e.g., E2 node 1010) is described.
- RIC subscriptions may be established through one or more subscription procedures between the E2 node 1010 and the Near-RT RIC (e.g., Near-RT RIC 1020).
- E2 node 1010 has subscription information 1610-a.
- Subscription information 1610-a may include information about one or more RIC subscriptions.
- RIC subscription can be specified by RAN function ID (i.e., RAN Function ID) and RIC request ID (i.e., RIC Request ID).
- the subscription information 1610-a of the E2 node 1010 may include information about four RIC subscriptions.
- the subscription information 1610-a of the E2 node 1010 is [ ⁇ RIC Request ID: 1, RAN Function ID: 1 ⁇ , ⁇ RIC Request ID: 2, RAN Function ID: 1 ⁇ , ⁇ RIC Request ID: 3, It may include a list consisting of RAN Function ID: 2 ⁇ , ⁇ RIC Request ID: 4, RAN Function ID: 4 ⁇ ].
- Near-RT RIC 1020 has subscription information 1620-a.
- Subscription information 1620-a may include information about one or more RIC subscriptions.
- RIC subscription can be specified by RAN function ID (i.e., RAN Function ID) and RIC request ID (i.e., RIC Request ID).
- the subscription information 1620-a of the Near-RT RIC 1020 may include information about three RIC subscriptions.
- the subscription information (1620-a) of Near-RT RIC (1020) is [ ⁇ RIC Request ID: 1, RAN Function ID: 1 ⁇ , ⁇ RIC Request ID: 3, RAN Function ID: 2 ⁇ , ⁇ RIC Request ID: 4, RAN Function ID: 4 ⁇ ].
- the E2 node 1010 may transmit a RIC subscription check request ('AUDIT REQUEST') message to the Near-RT RIC 1020.
- a RIC subscription check request ('AUDIT REQUEST') message to the Near-RT RIC 1020.
- configuration information for RIC subscription check e.g., elapse of a certain time in FIG. 12A or occurrence of a specific event in FIG. 12B
- Near-RT RIC 1020 can initiate a subscription check procedure.
- Table 5, Table 8, Table 10, or Table 12 may be referred to.
- Near-RT RIC 1020 may transmit a RIC subscription check request message including a transaction ID indicating '3'.
- the Near-RT RIC 1020 may transmit a RIC subscription check response ('AUDIT RESPONSE') message to the E2 node 1010.
- a RIC subscription check response ('AUDIT RESPONSE') message to the E2 node 1010.
- Table 6, Table 9, Table 11, or Table 13 may be referred to.
- Near-RT RIC 1020 may transmit a RIC subscription check response message including a transaction ID indicating '3'.
- Near-RT RIC 1020 may include subscription information 1620-a of Near-RT RIC 1020 in the RIC subscription check response message.
- the RIC subscription check response message is [ ⁇ RIC Request ID: 1, RAN Function ID: 1 ⁇ , ⁇ RIC Request ID: 3, RAN Function ID: 2 ⁇ , ⁇ RIC Request ID: 4, RAN Function ID: 4 ⁇ ] It may contain a composed list.
- the E2 node 1010 may obtain subscription information 1620-a of the Near-RT RIC 1020 from the RIC subscription check response message.
- the E2 node 1010 may compare the subscription information 1610-a of the E2 node 1010 and the subscription information 1620-a of the Near-RT RIC 1020.
- the E2 node 1010 may identify that the subscription information 1620-a of the Near-RT RIC 1020 does not match the subscription information 1610-a of the E2 node 1010.
- the subscription information (1620-a) of the Near-RT RIC (1020) compared to the subscription information (1610-a) of the E2 node (1010) is the RIC corresponding to 'RIC Request ID: 2'. It is possible to identify points that further include subscriptions.
- the E2 node 1010 may delete the RIC subscription corresponding to 'RIC Request ID: 2' and 'RIC Request ID: 2'.
- the subscription information (1610-b) of the E2 node 1010 is [ ⁇ RIC Request ID: 1, RAN Function ID: 1 ⁇ , ⁇ RIC Request ID: 3, RAN Function ID: 2 ⁇ , ⁇ RIC Request ID: 4, It may contain a list consisting of [RAN Function ID: 4 ⁇ ].
- the subscription information (1620-b) of Near-RT RIC (1020) is [ ⁇ RIC Request ID: 1, RAN Function ID: 1 ⁇ , ⁇ RIC Request ID: 3, RAN Function ID: 2 ⁇ , ⁇ RIC Request ID: 4, RAN Function ID: 4 ⁇ ].
- an audit procedure is described as a procedure for confirming RIC subscription information.
- the term 'audit' for the above-described operations can be used in other words with equivalent technical meanings such as 'confirmation', 'examination', 'status request/report', etc. It can be replaced by the term
- the method performed by the E2 node may include transmitting an audit request message to a Near-RT (real time) RIC (radio access network (RAN) intelligent controller). .
- the method may include receiving a test response message from the Near-RT RIC.
- the RIC subscription check response message may include one or more subscription information within the Near-RT RIC.
- Each of the one or more pieces of subscription information may include a RAN function ID (identifier) and a RIC request ID for the corresponding RIC subscription.
- the inspection request message may include a transaction ID.
- the check response message may include the transaction ID.
- the inspection request message is sent to the Near-RT RIC based on the arrival of a specified period or identifying rebooting of the functional block of the E2 node. can be transmitted.
- the method may include receiving a RIC subscription deletion request message from the Near-RT RIC.
- the method may include transmitting a RIC subscription deletion response message to the Near-RT RIC.
- the RIC subscription deletion request message is information about the RIC subscription, identified based on the result of comparison of one or more subscription information in the E2 node and subscription information registered in the subscription manager of the Near-RT RIC. may include.
- the information may include a RAN function ID and RIC request ID corresponding to the RIC subscription.
- the method may include receiving a RIC subscription request message from the Near-RT RIC.
- the method may include transmitting a RIC subscription response message to the Near-RT RIC.
- the RIC subscription request message includes information on RIC subscription, identified based on the result of comparison of one or more subscription information in the E2 node and subscription information registered in the subscription manager of the Near-RT RIC. It can be included.
- the information may include a RAN function ID and RIC request ID corresponding to the RIC subscription.
- a method performed by Near-RT (real time) RIC may include transmitting an audit request message to the E2 node.
- the method may include receiving a check response message from the E2 node.
- the RIC subscription check response message may include one or more subscription information within the E2 node.
- Each of the one or more pieces of subscription information may include a RAN function ID (identifier) and a RIC request ID for the corresponding RIC subscription.
- the inspection request message may include a transaction ID.
- the check response message may include the transaction ID.
- the inspection request message is to be transmitted to the E2 node based on the arrival of a specified period or identifying rebooting of a functional block of the E2 node. You can.
- the method may include transmitting a RIC subscription deletion request message to the E2 node.
- the method may include receiving a RIC subscription deletion response message from the E2 node.
- the RIC subscription deletion request message is information about the RIC subscription, identified based on the result of comparison of one or more subscription information in the E2 node and subscription information registered in the subscription manager of the Near-RT RIC. may include.
- the information may include a RAN function ID and RIC request ID corresponding to the RIC subscription.
- the method may include transmitting a RIC subscription request message to the E2 node.
- the method may include receiving a RIC subscription response message from the E2 node.
- the RIC subscription request message includes information on RIC subscription, identified based on the result of comparison of one or more subscription information in the E2 node and subscription information registered in the subscription manager of the Near-RT RIC. It can be included.
- the information may include a RAN function ID and RIC request ID corresponding to the RIC subscription.
- a method performed by an E2 node may include receiving an audit request message from a Near-RT (real time) RIC (radio access network (RAN) intelligent controller). .
- the method may include transmitting a test response message to the Near-RT RIC.
- the RIC subscription check response message may include one or more subscription information within the E2 node.
- Each of the one or more pieces of subscription information may include a RAN function ID (identifier) and a RIC request ID for the corresponding RIC subscription.
- the inspection request message may include a transaction ID.
- the check response message may include the transaction ID.
- the inspection request message is received from the Near-RT RIC based on the arrival of a specified period or identifying rebooting of the functional block of the E2 node. can be received.
- the method may include receiving a RIC subscription deletion request message from the Near-RT RIC.
- the method may include transmitting a RIC subscription deletion response message to the Near-RT RIC.
- the RIC subscription deletion request message is information about the RIC subscription, identified based on the result of comparison of one or more subscription information in the E2 node and subscription information registered in the subscription manager of the Near-RT RIC. may include.
- the information may include a RAN function ID and RIC request ID corresponding to the RIC subscription.
- the method may include receiving a RIC subscription request message from the Near-RT RIC.
- the method may include transmitting a RIC subscription response message to the Near-RT RIC.
- the RIC subscription request message includes information on RIC subscription, identified based on the result of comparison of one or more subscription information in the E2 node and subscription information registered in the subscription manager of the Near-RT RIC. It can be included.
- the information may include a RAN function ID and RIC request ID corresponding to the RIC subscription.
- a method performed by Near-RT (real time) RIC may include receiving an audit request message from an E2 node. The method may include transmitting a check response message to the E2 node.
- the RIC subscription check response message may include one or more subscription information within the Near-RT RIC. Each of the one or more pieces of subscription information may include a RAN function ID (identifier) and a RIC request ID for the corresponding RIC subscription.
- the inspection request message may include a transaction ID.
- the check response message may include the transaction ID.
- the inspection request message is to be received from the E2 node based on the arrival of a specified period or identifying rebooting of a functional block of the E2 node. You can.
- the method may include transmitting a RIC subscription deletion request message to the E2 node.
- the method may include receiving a RIC subscription deletion response message from the E2 node.
- the RIC subscription deletion request message is information about the RIC subscription, identified based on the result of comparison of one or more subscription information in the E2 node and subscription information registered in the subscription manager of the Near-RT RIC. may include.
- the information may include a RAN function ID and RIC request ID corresponding to the RIC subscription.
- the method may include transmitting a RIC subscription request message to the E2 node. It may include receiving a RIC subscription response message from the E2 node.
- the RIC subscription request message includes information on RIC subscription, identified based on the result of comparison of one or more subscription information in the E2 node and subscription information registered in the subscription manager of the Near-RT RIC. It can be included.
- the information may include a RAN function ID and RIC request ID corresponding to the RIC subscription.
- the electronic device of the E2 node includes at least one transceiver; And it may include at least one processor coupled to the at least one transceiver.
- the at least one processor may control the at least one transceiver to transmit an audit request message to a Near-RT (real time) RIC (radio access network (RAN) intelligent controller).
- the at least one processor may control the at least one transceiver to receive a check response message from the Near-RT RIC.
- the RIC subscription check response message may include one or more subscription information within the Near-RT RIC.
- Each of the one or more pieces of subscription information may include a RAN function ID (identifier) and a RIC request ID for the corresponding RIC subscription.
- a Near-RT (real time) RIC electronic device includes at least one transceiver; And it may include at least one processor coupled to the at least one transceiver.
- the at least one processor may control the at least one transceiver to transmit an audit request message to the E2 node.
- the at least one processor may control the at least one transceiver to receive a test response message from the E2 node.
- the RIC subscription check response message may include one or more subscription information within the E2 node.
- Each of the one or more pieces of subscription information may include a RAN function ID (identifier) and a RIC request ID for the corresponding RIC subscription.
- the electronic device of the E2 node includes at least one transceiver; And it may include at least one processor coupled to the at least one transceiver.
- the at least one processor may control the at least one transceiver to receive an audit request message from a Near-RT (real time) RIC (radio access network (RAN) intelligent controller).
- the at least one processor may control the at least one transceiver to transmit a check response message to the Near-RT RIC.
- the RIC subscription check response message may include one or more subscription information within the E2 node.
- Each of the one or more pieces of subscription information may include a RAN function ID (identifier) and a RIC request ID for the corresponding RIC subscription.
- a Near-RT (real time) RIC electronic device includes at least one transceiver; And it may include at least one processor coupled to the at least one transceiver.
- the at least one processor may control the at least one transceiver to receive an audit request message from the E2 node.
- the at least one processor may control the at least one transceiver to transmit a test response message to the E2 node.
- the RIC subscription check response message may include one or more subscription information within the Near-RT RIC.
- Each of the one or more pieces of subscription information may include a RAN function ID (identifier) and a RIC request ID for the corresponding RIC subscription.
- a method performed by Near-RT (real time) RIC may include transmitting an audit request message to the E2 node.
- the method may include receiving an audit response message from the E2 node.
- the RIC subscription inspection request message can be used for the RIC subscription audit procedure.
- the RIC subscription check response message may include a list of one or more RIC subscription information of the E2 node.
- Each RIC subscription information in the list of one or more RIC subscription information may include a RAN function ID (identifier) and a RIC request ID.
- the inspection request message may include an ID for the RIC subscription inspection procedure.
- the test response message may include the ID for the RIC subscription test procedure.
- the RIC subscription inspection request message may include a list of one or more RIC subscription information for which inspection is requested.
- Each RIC subscription information of one or more RIC subscription information for which the inspection is requested may include a RAN function ID and a RIC request ID.
- the one or more RIC subscription information included in the RIC subscription check response message may include the RIC subscription information confirmed by the E2 node among the one or more RIC subscription information for which the check was requested.
- the subscription check response message includes an unknown list of at least one subscription information that is unknown to the E2 node among the one or more RIC subscription information for which the check is requested or the one for which the check is requested. It may include at least one of a missing list of at least one subscription information that is not included in the above RIC subscription information and is held in the E2 node.
- the unknown list or the missing list may include a RAN function ID and a RIC request ID for each RIC subscription information.
- a method performed by an E2 node may include receiving an audit request message from a Near-RT (real time) RIC (radio access network (RAN) intelligent controller).
- the method may include transmitting an audit response message to the Near-RT RIC in response to the inspection request message.
- the RIC subscription inspection request message can be used for the RIC subscription audit procedure.
- the RIC subscription check response message may include a list of one or more RIC subscription information of the E2 node.
- Each RIC subscription information in the list of one or more RIC subscription information may include a RAN function ID (identifier) and a RIC request ID.
- the inspection request message may include an ID for the RIC subscription inspection procedure.
- the test response message may include the ID for the RIC subscription test procedure.
- the RIC subscription inspection request message may include a list of one or more RIC subscription information for which inspection is requested.
- Each RIC subscription information of one or more RIC subscription information for which the inspection is requested may include a RAN function ID and a RIC request ID.
- the one or more RIC subscription information included in the RIC subscription check response message may include the RIC subscription information confirmed by the E2 node among the one or more RIC subscription information for which the check was requested.
- the subscription check response message includes an unknown list of at least one subscription information that is unknown to the E2 node among the one or more RIC subscription information for which the check is requested or the one for which the check is requested. It may include at least one of a missing list of at least one subscription information that is not included in the above RIC subscription information and is held in the E2 node.
- the unknown list or the missing list may include a RAN function ID and a RIC request ID for each RIC subscription information.
- a Near-RT (real time) RIC electronic device may include a memory that stores instructions, at least one transceiver, and at least one processor coupled to the at least one transceiver.
- the instructions when executed by the at least one processor, cause the electronic device to transmit an audit request message to the E2 node through the at least one transceiver, and to receive an audit response message from the E2 node. It can be caused to be received through at least one transceiver.
- the RIC subscription inspection request message can be used for the RIC subscription audit procedure.
- the RIC subscription check response message may include a list of one or more RIC subscription information of the E2 node. Each RIC subscription information in the list of one or more RIC subscription information may include a RAN function ID (identifier) and a RIC request ID.
- an electronic device in an E2 node may include a memory that stores instructions, at least one transceiver, and at least one processor coupled to the at least one transceiver.
- the instructions when executed by the at least one processor, cause the electronic device to send the at least one audit request message from a Near-RT (real time) RIC (radio access network (RAN) intelligent controller). It can be received through the transceiver of , and cause the Near-RT RIC to transmit a check response message through the at least one transceiver.
- the RIC subscription inspection request message can be used for the RIC subscription audit procedure.
- the RIC subscription check response message may include a list of one or more RIC subscription information of the E2 node. Each RIC subscription information in the list of one or more RIC subscription information may include a RAN function ID (identifier) and a RIC request ID.
- a non-transitory storage medium may include memory for storing instructions.
- the instructions when executed by at least one processor, cause a Near-RT (real time) RIC (radio access network (RAN) intelligent controller) to transmit an audit request message to the E2 node, and This can cause an audit response message to be received.
- the RIC subscription inspection request message can be used for the RIC subscription audit procedure.
- the RIC subscription check response message may include a list of one or more RIC subscription information of the E2 node.
- Each RIC subscription information in the list of one or more RIC subscription information may include a RAN function ID (identifier) and a RIC request ID.
- a non-transitory storage medium may include memory for storing instructions.
- the instructions when executed by at least one processor, cause the E2 node to receive an audit request message from a Near-RT (real time) RIC (radio access network (RAN) intelligent controller), and the audit request message In response, it can cause the Near-RT RIC to transmit an audit response message.
- the RIC subscription inspection request message can be used for the RIC subscription audit procedure.
- the RIC subscription check response message may include a list of one or more RIC subscription information of the E2 node. Each RIC subscription information in the list of one or more RIC subscription information may include a RAN function ID (identifier) and a RIC request ID.
- a radio access network (RAN) intelligent controller e.g., Near-RT RIC (1020)
- RIC radio access network intelligent controller
- E2 node e.g., E2 node (1010)
- RAN radio access network
- RIC Near-RT RIC
- E2 node e.g., E2 node (1010)
- resource efficiency can be improved by reducing the inconsistency in subscription information between the two nodes and preventing unnecessary procedures (e.g., reset procedures).
- a procedure for deleting a RIC subscription or a RIC subscription request procedure can be performed.
- the procedure for deleting a RIC subscription of the present disclosure may include a RIC subscription deletion request procedure (i.e., a RIC subscription deletion request message and a RIC subscription deletion procedure) initiated by the E2 node.
- the procedure for deletion of a RIC subscription may include a RIC subscription deletion procedure (i.e., a RIC subscription deletion request message and a RIC subscription deletion response message) initiated by the Near-RT RIC.
- the RIC subscription request procedure may be initiated by Near-RT RIC and may include a RIC subscription request message and a RIC subscription response message.
- a storage medium that can be read by a machine (e.g., a device that performs the functions of the E2 node 1000, a device that performs the functions of the Near-RT RIC (1100)) ) may be implemented as software that includes one or more instructions stored in ).
- a processor e.g., control unit 530
- a device e.g., E2 node 1000, Near-RT RIC 1100
- the one or more instructions may be code generated by a compiler or code executable by an interpreter.
- a storage medium that can be read by a device may be provided in the form of a non-transitory storage medium, where 'non-transitory' refers to a device in which the storage medium is tangible. It only means that it does not include signals (e.g. electromagnetic waves), and this term does not distinguish between cases where data is semi-permanently stored in a storage medium and cases where data is stored temporarily.
- O-RAN is a standardized open interface. It is possible to configure a virtualized intelligent network equipped with For network virtualization, operations according to embodiments may be implemented in the form of a recording medium (eg, memory).
- Computer program products are commodities and can be traded between sellers and buyers.
- the computer program product may be distributed in the form of a machine-readable storage medium (e.g. compact disc read only memory (CD-ROM)) or through an application store (e.g. Play StoreTM) or on two user devices (e.g. It can be distributed (e.g. downloaded or uploaded) directly between smart phones) or online.
- a machine-readable storage medium e.g. compact disc read only memory (CD-ROM)
- an application store e.g. Play StoreTM
- two user devices e.g. It can be distributed (e.g. downloaded or uploaded) directly between smart phones) or online.
- at least a portion of the computer program product may be at least temporarily stored or temporarily created in a machine-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or a relay server.
- each component (e.g., module or program) of the above-described components may include a single or plural entity, and some of the plurality of entities may be separately placed in other components. there is.
- one or more of the components or operations described above may be omitted, or one or more other components or operations may be added.
- multiple components eg, modules or programs
- the integrated component may perform one or more functions of each component of the plurality of components in the same or similar manner as those performed by the corresponding component of the plurality of components prior to the integration. .
- operations performed by a module, program, or other component may be executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations may be executed in a different order, or omitted. Alternatively, one or more other operations may be added.
- a computer-readable storage medium that stores one or more programs (software modules) may be provided.
- One or more programs stored in a computer-readable storage medium are configured to be executable by one or more processors in an electronic device (configured for execution).
- One or more programs include instructions that cause the electronic device to execute methods according to embodiments described in the claims or specification of the present disclosure.
- These programs may include random access memory, non-volatile memory, including flash memory, read only memory (ROM), and electrically erasable programmable ROM. (electrically erasable programmable read only memory, EEPROM), magnetic disc storage device, compact disc-ROM (CD-ROM), digital versatile discs (DVDs), or other types of disk storage. It can be stored in an optical storage device or magnetic cassette. Alternatively, it may be stored in a memory consisting of a combination of some or all of these. Additionally, multiple configuration memories may be included.
- non-volatile memory including flash memory, read only memory (ROM), and electrically erasable programmable ROM. (electrically erasable programmable read only memory, EEPROM), magnetic disc storage device, compact disc-ROM (CD-ROM), digital versatile discs (DVDs), or other types of disk storage. It can be stored in an optical storage device or magnetic cassette. Alternatively, it may be stored in a memory consisting of a combination of some or all of these. Additionally, multiple configuration memories may
- the program may be distributed through a communication network such as the Internet, an intranet, a local area network (LAN), a wide area network (WAN), or a storage area network (SAN), or a combination thereof. It may be stored on an attachable storage device that is accessible. This storage device can be connected to a device performing an embodiment of the present disclosure through an external port. Additionally, a separate storage device on a communications network may be connected to the device performing embodiments of the present disclosure.
- a communication network such as the Internet, an intranet, a local area network (LAN), a wide area network (WAN), or a storage area network (SAN), or a combination thereof. It may be stored on an attachable storage device that is accessible. This storage device can be connected to a device performing an embodiment of the present disclosure through an external port. Additionally, a separate storage device on a communications network may be connected to the device performing embodiments of the present disclosure.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims (15)
- Near-RT(real time) RIC에 의해 수행되는 방법은,E2 노드에게 검사 요청(audit request) 메시지를 전송하는 동작과,상기 E2 노드로부터 검사 응답(audit response) 메시지를 수신하는 동작을 포함하고,상기 RIC 가입 검사 요청 메시지는 RIC 가입(subscription) 검사 절차(audit procedure)를 위해 이용되고,상기 RIC 가입 검사 응답 메시지는 상기 E2 노드의 하나 이상의 RIC 가입 정보들의 리스트를 포함하고,상기 하나 이상의 RIC 가입 정보들의 리스트의 각 RIC 가입 정보는, RAN 기능(function) ID(identifier) 및 RIC 요청(request) ID를 포함하는,방법.
- 청구항 1에 있어서,상기 검사 요청 메시지는 상기 RIC 가입 검사 절차를 위한 ID를 포함하고,상기 검사 응답 메시지는 상기 RIC 가입 검사 절차를 위한 상기 ID를 포함하는,방법.
- 청구항 1에 있어서,상기 RIC 가입 검사 요청 메시지는, 검사가 요청된 하나 이상의 RIC 가입 정보들의 리스트를 포함하고,상기 검사가 요청된 하나 이상의 RIC 가입 정보들의 각 RIC 가입 정보는, RAN 기능 ID 및 RIC 요청 ID를 포함하고,상기 RIC 가입 검사 응답 메시지에 포함된 상기 하나 이상의 RIC 가입 정보들은, 상기 검사가 요청된 상기 하나 이상의 RIC 가입 정보들 중에서, 상기 E2 노드에서 확인된 RIC 가입 정보를 포함하는,방법.
- 청구항 1에 있어서,상기 가입 검사 응답 메시지는:상기 검사가 요청된 상기 하나 이상의 RIC 가입 정보들 중에서 상기 E2 노드에게 알려지지 않은(unknown) 적어도 하나의 가입 정보의 언노운 리스트, 또는상기 검사가 요청된 상기 하나 이상의 RIC 가입 정보들에 포함되지 않고 상기 E2 노드에 보유된 적어도 하나의 가입 정보의 미싱(missing) 리스트,중 적어도 하나를 포함하고,상기 언노운 리스트 또는 상기 미싱 리스트는, 각 RIC 가입 정보에 대한, RAN 기능 ID 및 RIC 요청 ID를 포함하는,방법.
- 청구항 1에 있어서,상기 E2 노드에게 RIC 가입 삭제 요청 메시지를 전송하는 동작과,상기 E2노드로부터 RIC 가입 삭제 응답 메시지를 수신하는 동작을 더 포함하고,상기 RIC 가입 삭제 요청 메시지는,상기 E2 노드의 하나 이상의 가입 정보들 및 상기 Near-RT RIC의 가입 관리자(subscription manager)에 등록된 가입 정보의 비교의 결과에 기반하여 식별되는, RIC 가입에 대한 정보를 포함하고,상기 정보는, 상기 RIC 가입에 대응하는, RAN 기능 ID 및 RIC 요청 ID를 포함하는,방법.
- E2 노드에 의해 수행되는 방법은,Near-RT(real time) RIC(RAN(radio access network) intelligent controller)로부터 검사 요청(audit request) 메시지를 수신하는 동작과,상기 검사 요청 메시지에 응답하여, 상기 Near-RT RIC에게 검사 응답(audit response) 메시지를 전송하는 동작을 포함하고,상기 RIC 가입 검사 요청 메시지는 RIC 가입(subscription) 검사 절차(audit procedure)를 위해 이용되고,상기 RIC 가입 검사 응답 메시지는 상기 E2 노드의 하나 이상의 RIC 가입 정보들의 리스트를 포함하고,상기 하나 이상의 RIC 가입 정보들의 리스트의 각 RIC 가입 정보는, RAN 기능(function) ID(identifier) 및 RIC 요청(request) ID를 포함하는,방법.
- 청구항 6에 있어서,상기 검사 요청 메시지는 상기 RIC 가입 검사 절차를 위한 ID를 포함하고,상기 검사 응답 메시지는 상기 RIC 가입 검사 절차를 위한 상기 ID를 포함하고,방법.
- 청구항 6에 있어서,상기 RIC 가입 검사 요청 메시지는, 검사가 요청된 하나 이상의 RIC 가입 정보들의 리스트를 포함하고,상기 검사가 요청된 하나 이상의 RIC 가입 정보들의 각 RIC 가입 정보는, RAN 기능 ID 및 RIC 요청 ID를 포함하고,상기 RIC 가입 검사 응답 메시지에 포함된 상기 하나 이상의 RIC 가입 정보들은, 상기 검사가 요청된 상기 하나 이상의 RIC 가입 정보들 중에서, 상기 E2 노드에서 확인된 RIC 가입 정보를 포함하는,방법.
- 청구항 6에 있어서,상기 가입 검사 응답 메시지는:상기 검사가 요청된 상기 하나 이상의 RIC 가입 정보들 중에서 상기 E2 노드에게 알려지지 않은(unknown) 적어도 하나의 가입 정보의 언노운 리스트, 또는상기 검사가 요청된 상기 하나 이상의 RIC 가입 정보들에 포함되지 않고 상기 E2 노드에 보유된 적어도 하나의 가입 정보의 미싱(missing) 리스트,중 적어도 하나를 포함하고,상기 언노운 리스트 또는 상기 미싱 리스트는, 각 RIC 가입 정보에 대한, RAN 기능 ID 및 RIC 요청 ID를 포함하는,방법.
- 청구항 6에 있어서,상기 Near-RT RIC로부터 RIC 가입 삭제 요청 메시지를 수신하는 동작과,상기 Near-RT RIC에게 RIC 가입 삭제 응답 메시지를 전송하는 동작을 더 포함하고,상기 RIC 가입 삭제 요청 메시지는,상기 E2 노드의 하나 이상의 가입 정보들 및 상기 Near-RT RIC의 가입 관리자(subscription manager)에 등록된 가입 정보의 비교의 결과에 기반하여 식별되는, RIC 가입에 대한 정보를 포함하고,상기 정보는, 상기 RIC 가입에 대응하는, RAN 기능 ID 및 RIC 요청 ID를 포함하는,방법.
- Near-RT(real time) RIC의 전자 장치는,인스트럭션들을 저장하는 메모리;적어도 하나의 송수신기(at least one transceiver); 및상기 적어도 하나의 송수신기와 결합되는 적어도 하나의 프로세서(at least one processor)를 포함하고,상기 인스터력션들은, 상기 적어도 하나의 프로세서에 의해 실행될 때, 상기 전자 장치가:E2 노드에게 검사 요청(audit request) 메시지를 상기 적어도 하나의 송수신기를 통해 전송하고,상기 E2 노드로부터 검사 응답 메시지를 상기 적어도 하나의 송수신기를 통해 수신하도록, 야기하고,상기 RIC 가입 검사 요청 메시지는 RIC 가입(subscription) 검사 절차(audit procedure)를 위해 이용되고,상기 RIC 가입 검사 응답 메시지는 상기 E2 노드의 하나 이상의 RIC 가입 정보들의 리스트를 포함하고,상기 하나 이상의 RIC 가입 정보들의 리스트의 각 RIC 가입 정보는, RAN 기능(function) ID(identifier) 및 RIC 요청(request) ID를 포함하는,전자 장치.
- 청구항 11에 있어서,상기 인스터력션들은, 상기 적어도 하나의 프로세서에 의해 실행될 때, 상기 전자 장치가 청구항 2 내지 5의 방법들 중 하나를 수행하도록 야기하는,전자 장치.
- E2 노드의 전자 장치는,인스트럭션들을 저장하는 메모리;적어도 하나의 송수신기(at least one transceiver); 및상기 적어도 하나의 송수신기와 결합되는 적어도 하나의 프로세서(at least one processor)를 포함하고,상기 인스터력션들은, 상기 적어도 하나의 프로세서에 의해 실행될 때, 상기 전자 장치가:Near-RT(real time) RIC(RAN(radio access network) intelligent controller)로부터 검사 요청(audit request) 메시지를 상기 적어도 하나의 송수신기를 통해 수신하고,상기 Near-RT RIC에게 검사 응답 메시지를 상기 적어도 하나의 송수신기를 통해 전송하도록, 야기하고,상기 RIC 가입 검사 요청 메시지는 RIC 가입(subscription) 검사 절차(audit procedure)를 위해 이용되고,상기 RIC 가입 검사 응답 메시지는 상기 E2 노드의 하나 이상의 RIC 가입 정보들의 리스트를 포함하고,상기 하나 이상의 RIC 가입 정보들의 리스트의 각 RIC 가입 정보는, RAN 기능(function) ID(identifier) 및 RIC 요청(request) ID를 포함하는,전자 장치.
- 청구항 13에 있어서,상기 인스터력션들은, 상기 적어도 하나의 프로세서에 의해 실행될 때, 상기 전자 장치가 청구항 7 내지 10의 방법들 중 하나를 수행하도록 야기하는,전자 장치.
- 비-일시적 저장 매체에 있어서,인스트럭션들을 저장하는 메모리를 포함하고,상기 인스트럭션들은, 적어도 하나의 프로세서에 의해 실행될 때, Near-RT(real time) RIC(RAN(radio access network) intelligent controller)가 청구항 1 내지 5의 방법들 중 하나를 수행하도록 야기하거나, E2 노드가 청구항 6 내지 10의 방법들 중 하나를 수행하도록 야기하는,비-일시적 저장 매체.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202380082824.5A CN120266553A (zh) | 2022-09-30 | 2023-09-13 | 用于订阅审计的电子设备和方法 |
| EP23872881.0A EP4586707A4 (en) | 2022-09-30 | 2023-09-13 | ELECTRONIC DEVICE AND SUBSCRIPTION AUDIT METHOD |
| US19/093,932 US20250234183A1 (en) | 2022-09-30 | 2025-03-28 | Electronic device and method for subscription audit |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20220125832 | 2022-09-30 | ||
| KR10-2022-0125832 | 2022-09-30 | ||
| KR1020230028802A KR20240045973A (ko) | 2022-09-30 | 2023-03-03 | 가입 검사를 위한 전자 장치 및 방법 |
| KR10-2023-0028802 | 2023-03-03 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US19/093,932 Continuation US20250234183A1 (en) | 2022-09-30 | 2025-03-28 | Electronic device and method for subscription audit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024071762A1 true WO2024071762A1 (ko) | 2024-04-04 |
Family
ID=90478469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2023/013763 Ceased WO2024071762A1 (ko) | 2022-09-30 | 2023-09-13 | 가입 검사를 위한 전자 장치 및 방법 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20250234183A1 (ko) |
| EP (1) | EP4586707A4 (ko) |
| CN (1) | CN120266553A (ko) |
| WO (1) | WO2024071762A1 (ko) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12604179B2 (en) * | 2022-09-28 | 2026-04-14 | Nokia Solutions And Networks Oy | Method for service subscription auditing |
| US20240422622A1 (en) * | 2023-06-16 | 2024-12-19 | Cisco Technology, Inc. | Conflict management in a shared o-ran architecture |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220014963A1 (en) * | 2021-03-22 | 2022-01-13 | Shu-Ping Yeh | Reinforcement learning for multi-access traffic management |
| US20220240067A1 (en) * | 2019-10-11 | 2022-07-28 | Samsung Electronics Co., Ltd. | Device and method for service subscription via e2 interface in radio access network communication system |
| WO2022182396A1 (en) * | 2021-02-24 | 2022-09-01 | Intel Corporation | Ric subscription removal over e2 interface |
| WO2022186912A1 (en) * | 2021-03-05 | 2022-09-09 | Vmware, Inc. | Ric sdk |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12604179B2 (en) * | 2022-09-28 | 2026-04-14 | Nokia Solutions And Networks Oy | Method for service subscription auditing |
-
2023
- 2023-09-13 EP EP23872881.0A patent/EP4586707A4/en active Pending
- 2023-09-13 CN CN202380082824.5A patent/CN120266553A/zh active Pending
- 2023-09-13 WO PCT/KR2023/013763 patent/WO2024071762A1/ko not_active Ceased
-
2025
- 2025-03-28 US US19/093,932 patent/US20250234183A1/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220240067A1 (en) * | 2019-10-11 | 2022-07-28 | Samsung Electronics Co., Ltd. | Device and method for service subscription via e2 interface in radio access network communication system |
| WO2022182396A1 (en) * | 2021-02-24 | 2022-09-01 | Intel Corporation | Ric subscription removal over e2 interface |
| WO2022186912A1 (en) * | 2021-03-05 | 2022-09-09 | Vmware, Inc. | Ric sdk |
| US20220014963A1 (en) * | 2021-03-22 | 2022-01-13 | Shu-Ping Yeh | Reinforcement learning for multi-access traffic management |
Non-Patent Citations (2)
| Title |
|---|
| FADLI, MUHAMMAD: "O-RAN E2AP", HACKMD, XP009555228, Retrieved from the Internet <URL:http://hackmd.io/@muhammadfadlin/SJfCrENad> * |
| See also references of EP4586707A4 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN120266553A (zh) | 2025-07-04 |
| EP4586707A1 (en) | 2025-07-16 |
| US20250234183A1 (en) | 2025-07-17 |
| EP4586707A4 (en) | 2025-12-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2021215847A1 (en) | Functional architecture and interface for non-real-time ran intelligent controller | |
| WO2023075214A1 (en) | Method and apparatus for supporting edge computing service for roaming ue in wireless communication system | |
| WO2022220640A1 (ko) | 무선 통신 시스템에서 e2 노드 제어를 위한 장치 및 방법 | |
| WO2023191505A1 (en) | Monitoring for application ai/ml-based services and operations | |
| WO2023068854A1 (ko) | 무선 통신 시스템에서 트래픽에 대한 서비스 품질 관리 방법 및 장치 | |
| WO2023191502A1 (en) | Method and device for providing access path in wireless communication system | |
| WO2022092981A1 (ko) | 무선 통신 시스템에서 e2 노드 제어를 위한 장치 및 방법 | |
| WO2024071762A1 (ko) | 가입 검사를 위한 전자 장치 및 방법 | |
| WO2022235009A1 (en) | Method and apparatus to support virtual network in wireless communication network | |
| WO2024154972A1 (en) | Method and apparatus for transmitting control signal using service based interface in a wireless communication system | |
| WO2024096710A1 (en) | Multi model functionality fl training of an ai/ml learning model for multiple model functionalities | |
| WO2024158212A1 (ko) | E2 노드 구성 업데이트를 위한 전자 장치 및 방법 | |
| WO2024101580A1 (ko) | 무선 통신 시스템에서 긴급 서비스를 수행하기 위한 전자 장치 및 방법 | |
| WO2023219294A1 (ko) | 이중 연결에서 상향링크 경로를 제어하기 위한 장치 및 방법 | |
| WO2024210369A2 (en) | Method and apparatus for handling of a pdu session in a wireless communication system | |
| WO2024172429A1 (ko) | 과부하(오버로드) 제어를 위한 전자 장치 및 방법 | |
| WO2024043570A1 (en) | Method and apparatus for transmitting data in mobile communication system | |
| WO2024147718A1 (en) | Method and apparatus for supporting a monitoring for external services in a wireless communication system | |
| WO2024150901A1 (ko) | 이투 셋업 절차를 위한 전자 장치 및 방법 | |
| WO2024155163A1 (ko) | 알아이씨 쿼리를 위한 전자 장치 및 방법 | |
| WO2024248374A1 (en) | System and method for nf selection for access and mobility management in a service-based architecture | |
| WO2024210402A1 (en) | Method and apparatus for ai/ml data transmission in a wireless communication system | |
| WO2024237527A1 (en) | Handling model id in ai/ml operation in network | |
| WO2024147691A1 (en) | Method and apparatus for providing ue policy in mobile wireless communication system | |
| WO2024096371A1 (en) | Method and apparatus for transfer of ue information for rrc procedure in a wireless communication system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 23872881 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2023872881 Country of ref document: EP Ref document number: 202517034365 Country of ref document: IN |
|
| ENP | Entry into the national phase |
Ref document number: 2023872881 Country of ref document: EP Effective date: 20250408 |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| WWP | Wipo information: published in national office |
Ref document number: 202517034365 Country of ref document: IN |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 202380082824.5 Country of ref document: CN |
|
| WWP | Wipo information: published in national office |
Ref document number: 202380082824.5 Country of ref document: CN |
|
| WWP | Wipo information: published in national office |
Ref document number: 2023872881 Country of ref document: EP |
















