Base Station Interference Matrix Update via Advance Notification
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Solution Overview
Problem
In autonomous local area cellular communication systems with low power eNBs, the switching on and off of eNBs leads to time-variant active node numbers, requiring frequent updates of Background Interference Matrices (BIMs), which is inefficient and delays the dynamic allocation of secondary component carriers.
Innovation Solution
Implementing a method where eNBs notify neighboring eNBs when switching off or on, allowing them to store and reuse BIM information, reducing the need for rebuilding interference matrices and improving the efficiency of autonomous component carrier selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If eNBs frequently switch on and off in autonomous local area cellular systems, then energy saving and adaptability are improved, but the Background Interference Matrix (BIM) requires frequent updates which increases system complexity and reduces efficiency
Solution Approach 1:
The patent applies preliminary action by having eNBs send notifications before switching on or off, allowing neighboring eNBs to prepare BIM updates in advance. This pre-communication mechanism enables the system to handle frequent eNB state changes without requiring real-time BIM reconstruction, thereby reducing system complexity while maintaining adaptability.
2Use of energy by moving object
If eNBs switch on and off dynamically, then energy consumption is reduced, but the time required for BIM updates increases which delays dynamic allocation of secondary component carriers
Solution Approach 1:
The patent implements preliminary action through advance notification mechanisms where eNBs inform neighboring eNBs of their upcoming state changes. This allows neighboring eNBs to perform BIM updates proactively rather than reactively, significantly reducing the time delay associated with dynamic eNB switching while maintaining energy efficiency.
Solution Approach 2:
The patent utilizes feedback mechanisms where eNBs exchange state information and BIM data upon notification of switching events. This feedback loop enables rapid synchronization of interference matrices without requiring full reconstruction, thereby reducing update time while allowing dynamic energy management.
3Reliability
If BIM information is rebuilt frequently when eNBs switch states, then the system remains accurate, but the productivity of autonomous component carrier selection is reduced
Solution Approach 1:
The patent applies preliminary action by having eNBs send advance notifications of state changes, enabling neighboring eNBs to perform targeted BIM updates only for affected entries rather than complete reconstruction. This approach maintains BIM accuracy while significantly improving the productivity of autonomous component carrier selection by reducing unnecessary computational overhead.
Data Source
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AI summary
In a communication network comprising a plurality of base stations, a method comprising the steps of: sending a signal from said base station indicating that it will enter a period of inactivity, to at least one other base station; storing at that least one current parameter(s) relating to interference between base stations and/or updating said parameter(s) for forward use. The parameter(s) may relate to interference between first base station and at least one operationally neighbouring base station and may be Background Interference Matrix (BIM) data.