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- W2185991353 abstract "Next generation high-speed cellular networks are expected to support multimedia applications, which require QoS provisions. Since radio spectrum is the most expensive resource in wireless networks, it is challenge to support QoS using limited radio spectrum. However, efficient use of such limited spectrum becomes more important when there is a heavy traffic in the network. The use of available channels has been shown to improve the system capacity. The role of channel assignment scheme is to allocate channels to cells in such way as to minimize call-blocking probability or call dropping probability and also maximize the throughput. This paper presents a new hybrid channel allocation (HCA) which is the combination of fixed channel allocation (FCA) and dynamic channel allocation (DCA). A network becomes heavy when the bandwidth available in the cells is not enough to sustain the users demand and call will be blocked or dropped. The result shows that HCA algorithm significantly reduces the call-blocking probability in heavy traffic load and can improve the bandwidth utilization while providing QoS guarantees. Furthermore, all channels will be placed in a central pool and on demand will be assigned to the base station. When a call using such a borrowed channel terminates, the cell may retain the channel depending upon its current condition therefore HCA has comparatively much smaller number of reallocations than other schemes. It also shows that it behaves similar to the FCA at high traffic and to the DCA at low traffic loads as it is designed to meet the advantages of both." @default.
- W2185991353 created "2016-06-24" @default.
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- W2185991353 date "2012-01-01" @default.
- W2185991353 modified "2023-09-27" @default.
- W2185991353 title "A Channel Allocation Algorithm for Efficient QoS Provisioning in Wireless Networks" @default.
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