Cell Clustering for Wireless Network Energy Optimization
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Solution Overview
Problem
Current wireless telecommunication networks face inefficiencies in energy management and resource allocation due to the need to constantly monitor and switch cells between active and sleep modes, leading to unnecessary energy consumption and resource wastage, especially when paging mobile devices across a network.
Innovation Solution
A method of grouping cells into clusters, where cells are monitored for sleep or switched-off states and only activated when a central network entity indicates a mobile device's presence within the cluster, allowing for targeted wake-up and operation mode activation, along with assigning a tracking area number to the cluster to optimize paging and reduce unnecessary cell activation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If cells are constantly monitored and switched between active and sleep modes, then energy consumption is reduced, but unnecessary cell activations occur leading to energy wastage
Solution Approach 1:
The patent segments the network into cell clusters, where a subset of cells is grouped together and assigned a common tracking area number. This segmentation allows the network to treat the cluster as a single unit for paging purposes, activating only the necessary cells within the cluster rather than scanning all cells individually, thereby reducing unnecessary activations and energy wastage.
Solution Approach 2:
Multiple cells are merged into a single cell cluster with a common tracking area number. This merging allows the network to page mobile devices across multiple cells simultaneously by activating the entire cluster, reducing the overhead of individual cell activation and minimizing energy consumption during paging operations.
2Reliability
If all cells are activated to ensure mobile device paging, then paging reliability is improved, but resource allocation efficiency deteriorates
Solution Approach 1:
The patent applies local quality by assigning tracking area numbers at the cell cluster level rather than at the individual cell level. This allows different clusters to be managed with different activation strategies based on local traffic patterns and mobile device distribution, improving resource allocation efficiency while maintaining paging reliability through targeted activation of relevant clusters.
Solution Approach 2:
The network dynamically manages cell cluster activation based on real-time conditions. The network entity can activate or deactivate specific cell clusters depending on current traffic patterns, mobile device locations, and paging requirements, optimizing resource allocation efficiency while ensuring reliable paging when needed through adaptive, condition-based activation strategies.
Data Source
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AI summary
The invention relates to a method of grouping a sub-set of cells of a wireless telecommunication network (300), each cell being served by a corresponding base station (BS#1-7), wherein the method comprises: - monitoring (S1) the cells for identification of the sub-set of the cells being switched off and/or in a sleep mode; - grouping (S2) the sub-set of the cells to a cell cluster; and switching (S3) on and/or waking up each base station of the cells of the cell cluster, when a central network entity (302) indicates paging of a mobile device being located in a cell of the cell cluster.