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A Paging Indicator Transmission Technique for Mobile WiMAX Systems
Yeong-Jun KIM Hyun-Il YOO Kyung-Soo WOO Jung-Ryun LEE Heesoo LEE Yong-Soo CHO
IEICE TRANSACTIONS on Communications
Publication Date: 2009/07/01
Online ISSN: 1745-1345
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Terrestrial Radio Communications
power saving, paging indicator, OFDM, mobile WiMAX, preamble,
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In a cellular system, efficient power saving techniques for a mobile station (MS) are necessary because of its inherently limited battery capacity. The paging indicator (PI) transmission scheme in CDMA cellular systems is known to be an effective power saving strategy. However, in OFDM-based cellular systems, the MS has to operate FFT for PI symbol detection, resulting in a significant power consumption. In this letter, a PI transmission technique with reduced power consumption using the preamble in OFDM-based cellular systems, especially for mobile WiMAX systems, is proposed for the MS under power saving mode. Simulations indicate a 30-50% power saving from our proposed PI transmission technique, at the expense of a slight increase in paging response delay.