Inter-System Energy Saving in Multi-RAT Networks
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Solution Overview
Problem
Existing energy saving solutions in mobile communication networks are imperfect and cannot effectively realize energy saving functions across inter-system networks where LTE-A, LTE, UMTS, and GSM coexist, due to the lack of comprehensive energy saving mechanisms across different interfaces.
Innovation Solution
A method and equipment that utilize load information from network nodes to determine and adjust energy saving states across inter-system networks, employing a distributed energy saving structure and signaling procedures to optimize resource utilization, allowing nodes to enter or exit energy saving modes based on load indicators and network topology, using interfaces like S1, Iub, Iu, Abis, and Iur-g.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing energy saving solutions are applied in LTE system, then energy saving function can be realized in LTE system, but energy saving function cannot be realized for inter-system networks where LTE-A, LTE, UMTS and GSM coexist
Solution Approach 1:
The patent extends the energy saving mechanism to support multiple radio access technologies (LTE, LTE-A, UMTS, GSM) through a unified approach. The network elements are designed to handle energy saving operations across different systems using common principles of load assessment and state transition, making the solution universally applicable across inter-system networks while maintaining compatibility with existing LTE-specific implementations
2Extent of automation
If network elements collect information for self-optimizing, then energy saving decision can be made autonomously, but OAM system participation is required in centralized architecture
Solution Approach 1:
The patent divides the energy saving system into distributed network elements that can autonomously perform load assessment and state transitions, while the OAM system provides centralized configuration and monitoring capabilities. This segmentation allows semi-autonomous operation at the network element level while maintaining centralized control for complex decisions, reducing the burden on OAM without completely eliminating its role
Solution Approach 2:
The patent introduces standardized interfaces and information exchange mechanisms that act as intermediaries between network elements and the OAM system. These intermediaries enable automated energy saving operations at the network element level while allowing the OAM system to receive status information and issue configuration commands when needed, bridging the gap between autonomous operation and centralized management
Data Source
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AI summary
The present invention discloses a method and equipment for saving energy. The method comprises the following steps: the first network node acquires load information of the second network node next to the first and modifies energy saving state according to its own load information and that of said second network node; said first and second network nodes send information on indication for saving energy state to the adjacent third network and inform the information of modifying energy saving state to said third network node based on said information on indication for saving energy state. Embodiments of the present invention optimize resource utilization rate of the whole network.