HANDOFF ORDERING USING LINK QUALITY ESTIMATOR FOR WIRELESS MULTIMEDIA COMMUNICATIONS
Date Issued
2005
Date
2005
Author(s)
Lin, Po-Chiang
DOI
en-US
Abstract
Traditional handoff ordering methods adopt the received signal strength (RSS) as the basis of prioritization. However, the RSS is not the only one metric to represent the user perceived quality of service, since many other factors, like the noise, interference, packet length, and modulation / coding schemes, would also affect it. In this thesis, we propose a handoff ordering method based on packet success rate (PSR) for wireless multimedia communications. The priority of a handoff request is based on its current PSR, the PSR degradation rate, and the minimum PSR requirement of its service class. The major contribution of our method is that we improve the user perceived QoS during the handoff process. The analysis and the simulation results indicate that our method can effectively improve the handoff failure probability and the forced termination probability with little or no increase of the new call blocking probability.
Subjects
無線多媒體通訊
連線品質
交遞排序
wireless multimedia communications
link quality
handoff ordering
Type
thesis
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