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.
With the emerging technology of electronic commerce, most of the business companies positively tend to offer services to their clients dealing in B2C e-commerce. We pro- posed four models for business to consumer (B2C) with supply chain management. First two models are M |M |1 with and without server breakdown and other models are M |M |C with and without server breakdown. During service when the server breakdown, the re- pairing process of the server begins immediately. During repair period the server serves the customer with slow rate and service period follows exponential distribution. Then numerical results are also illustrated various system performances are calculated
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