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Paper Information

Journal:   SCIENTIA IRANICA   SUMMER 2004 , Volume 11 , Number 3; Page(s) 193 To 202.
 
Paper: 

PERFORMANCE COMPARISON OF ADMISSION CONTROL POLICIES FOR NEW CALLS IN SOFT-HANDOFF REGIONS FOR CDMA CELLULAR NETWORKS

 
 
Author(s):  ASHTIANI F.*, AREF M.R., SALEHI J.A.
 
* DEPARTMENT OF ELECTRICAL ENGINEERING, SHARIF UNIVERSITY OF TECHNOLOGY, TEHRAN, I.R. IRAN
 
Abstract: 

In this paper, two basic new call admission control policies in soft-handoff regions in Code-Division Multiple-Access (CD MA) cellular networks are compared. The two policies are Independent Decision Policy (IDP), which is, approximately, equivalent to a directed retry policy proposed for non-CDMA cellular networks and Collective Decision Policy (CDP). The merits in this comparison include the tradeoff between carried traffic and quality loss probability while maintaining other traffic parameters (such as blocking and dropping (handoff failure) probabilities) sufficiently low. Using numerical results, it is deduced that the CDP leads to a better overall performance. Another important issue considered in this paper reverts to spatial fairness. In this respect, the necessary modification for the above admission policies is proposed. In these analyses, a modified reverse link dynamic traffic model is employed, built upon Interference-based Call Admission Control (ICAC), by including the shadowing effect in soft-handoff regions.

 
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