DocumentCode :
1087073
Title :
AIDOA: An Adaptive and Energy-Conserving Indexing Method for On-Demand Data Broadcasting Systems
Author :
Huang, Jiun-Long
Author_Institution :
Nat. Chiao Tung Univ., Hsinchu
Volume :
38
Issue :
2
fYear :
2008
fDate :
3/1/2008 12:00:00 AM
Firstpage :
331
Lastpage :
345
Abstract :
Since only a modest improvement in battery lifetime is expected in the next few years, energy conservation is raised as a key factor in the design of mobile devices. In view of this, we propose in this paper an energy-conserving on-demand data broadcasting system that employs the data indexing technique. Different from prior work, the power consumption of turning on and turning off the wireless network interfaces is considered. In addition, we also employ a server cache to reduce the effect of the time to retrieve data items from the corresponding data servers. Specifically, we first analyze the access and tuning times of data requests, and propose an adaptive index and data organizing algorithm (AIDOA) to adjust the degree of buckets according to the system workload. Several experiments are then conducted to evaluate the performance of algorithm AIDOA. The experimental results show that algorithm AIDOA is able to greatly reduce the power consumption at the cost of a slight increase in the average access time and dynamically adjust the index and data organization to adapt to the change of system workload.
Keywords :
broadcasting; data communication; mobile radio; AIDOA; adaptive index and data organizing algorithm; data indexing technique; energy-conserving indexing method; mobile information system; on-demand data broadcasting systems; server cache; wireless network interfaces; Algorithm design and analysis; Batteries; Broadcasting; Energy conservation; Energy consumption; Indexing; Information retrieval; Network servers; Turning; Wireless networks; Data indexing; energy conservation; mobile information system; on-demand data broadcasting;
fLanguage :
English
Journal_Title :
Systems, Man and Cybernetics, Part A: Systems and Humans, IEEE Transactions on
Publisher :
ieee
ISSN :
1083-4427
Type :
jour
DOI :
10.1109/TSMCA.2007.914739
Filename :
4459770
Link To Document :
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