Energy Conserving Multiple Data Access in Wireless Data Broadcast Environments

SeokJin IM  MoonBae SONG  Sang-Won KANG  Jongwan KIM  Chong-Sun HWANG  SangKeun LEE  

IEICE TRANSACTIONS on Communications   Vol.E90-B   No.9   pp.2629-2633
Publication Date: 2007/09/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e90-b.9.2629
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Broadcast Systems
wireless communication,  broadcast system,  air index,  data retrieval,  

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This letter proposes a group-based distributed air index (called GDI) using two-leveled groups by partitioning the identifiers of data items to reduce the size of the index. GDI provides both global and local views of data items and multiple pointers to data items in a single access to an index. Simulation results show that GDI outperforms the existing index in terms of multiple data access, energy conservation and data waiting time.