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http://dx.doi.org/10.6109/JKIICE.2009.13.1.67

Implement of Call blocking Probabilities in Mobile Communication Networks  

Park, Sang-Hyun (한국전자통신연구원부설연구소)
Oh, Youn-Chil (국립군산대학교 전자정보공학부)
Lee, Young-Seok (국립군산대학교 전자정보공학부)
Yang, Hae-Kwon (국립군산대학교 전자정보공학부)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.13, no.1, 2009 , pp. 67-74 More about this Journal
Abstract
This paper presents a method of improving the service availability by distributing the traffic of voice/data calls over the multi-layer cells in a mobile communication network. The traffic model is described and the call handling performance is analyzed. In our method, a fast moving call is moved to and serviced in the upper layer cell. A call is also moved upward when an overflow occurs. But unlike other methods, the call that is moved upward in the overflow case is the one which has the longest sojourn time in the cell. Moreover, when the call that was moved upward due to overflow condition stays longer than a certain period of time in the upper layer cell, the system moves the call back to the lower layer in order to save the more expensive resources of the upper layer cell. Call handling performance of this method evaluated from M/M/C/K models shows clear improvement with respect to call blocking probability and forced termination probability.
Keywords
mobile communication network; hierarchical cell; handover; call handling performance;
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