E2 Setup Message Service Subscription via RIC

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Solution Overview

Problem

In the context of 4G/5G communication systems, there is a need for efficient support of differentiated services in virtualized networks, particularly in the open radio access network (O-RAN) architecture, where existing message transmission procedures are inefficient and limited in scope.

Innovation Solution

The proposed solution involves optimizing the E2 setup message transmission between the RIC (Radio Access Network Intelligent Controller) and E2 nodes (such as O-DU, O-CU-CP, O-CU-UP) by including specific information elements (IEs) such as RIC SERVICE UPDATE IE, RIC SERVICE UPDATE ACKNOWLEDGE IE, and RIC SUBSCRIPTION IE within the E2 setup request and response messages.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If traditional separate message transmission procedures are used for service update and subscription, then service setup can be completed with standardized message sequences, but the number of messages increases and transmission time is extended

Engineering Contradiction:

Improveservice setup completionVSAvoidmessage transmission time

Core Design Contradiction:

Ease of manufactureVSLoss of time

Solution Approach 1:

The patent merges the service update message and subscription message into a single E2 setup response message. The RIC includes both the service update acknowledge IE and the subscription request IE within the same E2 setup response message, eliminating the need for separate message transmissions and reducing overall setup time

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The RIC performs the subscription request action preliminarily by including it within the E2 setup response message before a separate subscription procedure would normally occur. This preliminary inclusion of the subscription request accelerates the overall service setup process

Inventive Principle:

Principle #10Preliminary action

2Ease of operation

If multiple separate messages are transmitted for service update and subscription, then message processing can be simplified and standardized, but the quantity of messages and signaling overhead increases

Engineering Contradiction:

Improvemessage processing simplicityVSAvoidnumber of messages

Core Design Contradiction:

Ease of operationVSQuantity of substance

Solution Approach 1:

The patent combines multiple message functions into a single E2 setup response message by including both the service update acknowledge IE and subscription request IE within the same message structure, thereby reducing the total number of messages while maintaining processing clarity through standardized IE formats

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The E2 setup response message is enhanced to perform multiple functions simultaneously: it acknowledges the service update and initiates the subscription request in one message, making the message multi-functional and reducing signaling overhead

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20250168609A1Device and method for service subscription via e2 interface in radio access network communication system

Publication Date: 2025.05.22 SAMSUNG ELECTRONICS CO LTD

AI summary

A method performed by an E2 node is provided. The method includes transmitting an E2 setup request message to a radio access network (RAN) intelligent controller (RIC), and receiving an E2 setup response message from the RIC, wherein the E2 setup request message includes an information element (IE) related to an RIC service update request message, and wherein the E2 setup response message includes an IE related to an RIC service update acknowledgement message.