標題: The sub-rating channel assignment strategy for PCS hand-offs
作者: Lin, YB
Noerpel, AR
Harasty, DJ
資訊工程學系
Department of Computer Science
公開日期: 1-二月-1996
摘要: A new personal communications services (PCS) hand-off scheme is proposed. This scheme provides for hand-off to radio ports on which there is no free channel by ''sub-rating'' an existing connection, With sub-rating, an occupied full-rate channel is temporarily divided into two half-rate channels: one to serve the existing call and the other to serve the hand-off request, The blocking probabilities (combined forced terminations of existing calls and blocking of new call attempts) of this new scheme compare favorably with the standard scheme (nonprioritizing) and the previously proposed prioritizing schemes, The ''costs'' for this scheme are presented and discussed, as well as the additional procedural complexity of implementing on-the-fly sub-rating and the impact of continuing the conversation on a lower rate channel (which may lower speech quality or increase battery drain), Analytical models and simulations investigating the traffic impacts are presented, as are the results that show that even in the highest offered load considered a 3-min conversation in the busy hour experiences less than half a second of sub-rated conversation on average and only about 3% of the calls experience more than 5.12 s of sub-rated conversation. This scheme can increase capacity by 8-35% for systems with 1% call incompletion probability.
URI: http://dx.doi.org/10.1109/25.481829
http://hdl.handle.net/11536/1457
ISSN: 0018-9545
DOI: 10.1109/25.481829
期刊: IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
Volume: 45
Issue: 1
起始頁: 122
結束頁: 130
顯示於類別:期刊論文


文件中的檔案:

  1. A1996TV75700015.pdf