E2 Node Service Subscription via RIC Interface
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Solution Overview
Problem
In 4G/5G communication systems, the existing E2 setup message process between the RIC and E2 nodes is inefficient, requiring multiple messages for service initialization and update, which limits real-time service support and differentiated user services in virtualized networks.
Innovation Solution
The method involves generating and transmitting E2 SETUP REQUEST and RESPONSE messages with specific information elements (IEs) such as RIC SERVICE UPDATE and SUBSCRIPTION Information Elements, optimizing message transmission between E2 nodes and the RIC, including MESSAGE TYPE, RIC REQUEST ID, and E2 NODE FUNCTION ID, to streamline the service update and subscription process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If service subscription is performed via E1 interface using OC and PC messages, then service subscription can be established, but the procedure complexity increases and service subscription time is prolonged
Solution Approach 1:
The service subscription procedure is segmented into two distinct phases: service request phase (using E1 interface between OAM and RIC) and service delivery phase (using E2 interface between RIC and E2 node). This segmentation allows the time-consuming OC/PC message exchanges to be separated from the critical service delivery path, reducing overall service subscription time while maintaining reliability.
Solution Approach 2:
The RIC acts as an intermediary between the OAM and E2 nodes. It receives service requests from OAM via E1 interface, processes the service subscription information, and then initiates E2 setup procedures with the appropriate E2 node. This intermediary role streamlines the communication path and reduces procedure complexity by consolidating control functions in the RIC.
2Manufacturing precision
If detailed service subscription information is exchanged between OAM and RIC via E1 interface, then service configuration accuracy is improved, but message overhead and processing complexity increase
Solution Approach 1:
The patent extracts detailed service configuration information exchange from the E1 interface communication between OAM and RIC, and relocates it to the E2 interface communication between RIC and E2 nodes. Only essential service request information is exchanged via E1, while detailed configuration parameters are handled in the E2 setup messages, reducing E1 interface complexity while maintaining configuration accuracy.
Solution Approach 2:
The patent introduces a new communication dimension by establishing E2 interfaces between RIC and E2 nodes, parallel to the existing E1 interface. This dimensional addition allows detailed service configuration to be handled in the newly created E2 dimension, freeing the E1 dimension for high-level service management and reducing its processing complexity.
Data Source
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AI summary
The disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). According to various embodiments of the present disclosure, a method performed by node E2 may comprise the steps of: transmitting, to a radio access network, RAN, intelligent controller, RIC, an E2 setup request message including information on a list of one or more functions in E2 node to be added; and receiving, from the RIC, an E2 setup response message including information related to the list of one or more functions in E2 node to be added.