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A neural-network-based context-aware handoff algorithm for multimedia computing

delete2008-09-18
delete18
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OA
AI
T
Tsung-Nan Lin *
C
Chiapin Wang
P
Po-Chiang Lin
DOI:10.1145/1386109.1386110delete
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Abstract

Abstract

En 中文
The access of multimedia computing in wireless networks is concerned with the performance of handoff because of the irretrievable property of real-time data delivery. To lessen throughput degradation incurred by unnecessary handoffs or handoff latencies leading to media disruption perceived by users, this paper presents a link quality based handoff algorithm. Neural networks are used to learn the cross-layer correlation between the link quality estimator such as packet success rate and the corresponding context metric indictors, for example, the transmitting packet length, received signal strength, and signal to noise ratio. Based on a pre-processed learning of link quality profile, neural networks make essential handoff decisions efficiently with the evaluations of link quality instead of the comparisons between relative signal strength. The experiment and simulation results show that the proposed algorithm improves the user perceived qualities in a transmission scenario of VoIP applications by minimizing both the number of lost packets and unnecessary handoffs.
Keywords:
algorithms
performance
multimedia computing
handoff
context-aware
neural networks
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Journal

ACM Transactions on Multimedia Computing Communications and Applications cover
ACM Transactions on Multimedia Computing Communications and Applications
IF:
6
Papers:
2.0K
Citations:
5.4K

Organization

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National Taiwan Normal University
Scholars:
4.8K
Papers: 4.7K
Citations: 4.4K
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National Taiwan University
Scholars:
4.7W
Papers: 4.2W
Citations: 3.6W