| dc.description.abstract |
In cellular Networks we generally consider a single queue
for each cell, some authors proposed a model with a dedicated queue
for each transceiver in the cell. We have extended the idea of
dedicated queue for each transceiver in the cell with sub-rating
channels to improve the Quality of Service (QOS) of the system. In
this paper we have compared three models, in model-I we used guard
channels to give priority to handoff attempts and a buffer for finite
size is provided to give priority to handoff data attempts, further in
model-II we have taken sub-rating channel scheme (SCS). In subrating
scheme a full rate channel is temporarily divided into two half
rate channels in the blocked cell; one half rate channel serve the
originating call and another serves handoff call. We proposed a
dedicated queue for each transceiver in the cell with sub-rating in
model-III. The Fixed Channel Assignment Scheme is considered for
all models. The probabilities of handoff failure, blocking probability
of new calls, forced termination of handoff calls, probability of noncompleted
calls for all models are calculated for varying assumed of
values arrival rate of new data calls, arrival rate of new voice calls,
buffer size of channels and service rates. We compared and analyzed
the numerical results to validate the proposed models. |
en_US |