ENERGY EFFICIENT ADAPTIVE SECTOR-BASED USER CLUSTERING ALGORITHM FOR CELLULAR NETWORK

摘要

In this paper, we propose an adaptive and multi-sector-based user clustering algorithm whichudincreases energy efficiency in a cellular network. Adaptive sectoring with dynamically changingudsector angles is illustrated with a number of randomly distributed mobile stations. Transmitted powerudis equally shared by sectors before adaptive user clustering. The sector angles vary from 30 to 360uddegrees by merging neighboring sectors and a sector is switched off till the user density exceeds audthreshold (Td). The Td value is computed from the total number of users that the cell canudaccommodate over the area of the cell. The sectors with less than Td density exhibits transmit powerudwhich approaches to zero or sleeping state and so that the cumulative power is saved. Simulationudresults show that an average of 45% to 50% energy can be saved in 10 iterations.