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An Adaptive Power Saving Scheme in OFDMA-TDD-Based Cellular Relay Networks
Se-Jin KIM Byung-Bog LEE You-Chang KO Seungwan RYU Hyong-Woo LEE Choong-Ho CHO
IEICE TRANSACTIONS on Communications
Publication Date: 2010/06/01
Online ISSN: 1745-1345
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Terrestrial Radio Communications
cellular relay network, power saving, OFDMA,
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We present an adaptive power saving (APS) scheme to reduce downlink energy consumption of the transmit power in the cellular relay network (CRN). In the APS scheme, some cell topologies operating in 2-hop mode using relay stations (RSs) are converted to that of 3-hop mode and others are simultaneously converted to that of single-hop mode when the offered traffic load becomes very low, especially during night periods. By this means, we show the APS scheme outperforms the conventional CRN (CCRN) scheme in terms of energy consumption.