Relay Node Interface Connectivity via Donor eNB X2 Forwarding
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Solution Overview
Problem
In LTE systems with introduced Relay Nodes (RN), RNs face challenges in acquiring interface connectivity information of Donor Evolved Node B (DeNB) and neighboring eNBs, which is essential for handover, automatic neighbor relation setup, interference coordination, and load equilibrium, but current mechanisms are inadequate.
Innovation Solution
A method and system where DeNB sends interface connectivity information through the X2 interface to RN, enabling RN to acquire and update information about DeNB and neighboring eNBs, including IDs, cell configurations, and MME POOL information, facilitating handover and other management functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If relay nodes are introduced to reduce eNB deployment costs, then network coverage is improved, but interface connectivity information acquisition becomes insufficient
Solution Approach 1:
The patent introduces a new message transmission mechanism where the donor eNB acts as an intermediary to forward interface connectivity information to relay nodes. The X2 interface message includes a list of neighbor eNBs with their configuration information, enabling RNs to acquire necessary connectivity data without direct X2 connections to all neighbor eNBs.
2Ease of manufacture
If relay nodes are introduced to reduce deployment costs, then cost is reduced, but handover and neighbor relation management become problematic
Solution Approach 1:
The patent implements preliminary action by having the donor eNB pre-collect and forward interface connectivity information about neighbor eNBs to the relay node before handover is needed. This includes neighbor eNB IDs, cell configuration information, and other relevant parameters, enabling the RN to perform handover and neighbor relation management without real-time information exchange with each neighbor eNB.
Data Source
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AI summary
The invention discloses a method, device and system for sending and receiving interface connectivity information. eNB sends the message carrying interface connectivity information between eNB and neighbor eNB through X2 interface to enable relay node to acquire the interface connectivity information between eNB and neighbor eNB to further accomplish handover, automatic neighbor relation setup, interference coordination and load equilibrium.