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  

Publication
IEICE TRANSACTIONS on Communications   Vol.E92-B   No.7   pp.2542-2545
Publication Date: 2009/07/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E92.B.2542
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Terrestrial Radio Communications
Keyword: 
power saving,  paging indicator,  OFDM,  mobile WiMAX,  preamble,  

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Summary: 
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.