Base Station Load Exchange for Dual-Connection Handover
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Solution Overview
Problem
Existing specifications only support load exchange between two base stations, limiting the ability to determine a target cell for handover based on the load of a target LTE base station and failing to consider scenarios where a dual connection may be executed during handover.
Innovation Solution
Implementing a signaling exchange method that includes exchanging information with other base stations, including a list of interfacing base stations and load information of cells, with the option to establish dual connections, using X2 or Xn interface signaling to enhance handover judgment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing specification is used for load exchange between two base stations, then the signaling exchange is simple, but the handover judgment cannot consider dual connection scenarios
Solution Approach 1:
The load information is segmented into two parts: local base station load information and neighboring base station load information. This segmentation allows the handover judgment to consider both single connection and dual connection scenarios by separately evaluating the load conditions of different base stations involved in the dual connection architecture.
Solution Approach 2:
The signaling exchange mechanism is designed to be universal, supporting both traditional single connection handover and new dual connection handover scenarios. By incorporating neighboring base station load information into the existing load exchange signaling, the system achieves multi-functionality without requiring completely separate signaling paths for different handover types.
2Productivity
If only local base station load information is used, then the signaling exchange is simple, but the handover decision cannot optimize for dual connection throughput
Solution Approach 1:
The neighboring base station load information is obtained in advance through preliminary signaling exchange between base stations. This preliminary action ensures that when handover decision is made, the source base station already has the necessary load information from neighboring base stations to evaluate dual connection throughput potential, eliminating the need for additional information requests during the handover process.
Solution Approach 2:
A feedback mechanism is established where base stations exchange load information through standardized signaling interfaces. The source base station receives feedback about neighboring base station load conditions, which is then used to optimize handover decisions. This feedback loop enables informed decisions about whether to establish dual connections based on real-time load conditions of all involved base stations.
Data Source
AI summary
The present disclosure discloses a signaling exchange method, a base station and an apparatus. The method includes exchanging, by a base station information with other base stations, the information containing a list of base stations interfacing with the base station and/or load information of cells under the base stations interfacing with the base station; or the information containing load information, the load information being determined partially according to load-related information of cells under the base station and/or load information of cells under base stations configured to establish a dual connection for a terminal and interfacing with the base station.