Abstract
A clustered multihop cellular network (cMCN) architecture is recently proposed and studied using fixed channel assignment (FCA). In this paper, we propose to use dedicated information ports (DIPs) as clusterheads for cMCN and develop a multihop dynamic channel assignment (mDCA) scheme, including two different channel searching strategies. The mDCA is based on the idea of assigning channels with the knowledge of the information of interference in surrounding cells. A channel reassignment procedure is also investigated. Simulations show that mDCA is able to achieve significant capacity improvement in terms of call blocking as compared to the FCA for cMCN and the FCA for single-hop cellular networks. Furthermore, mDCA has a huge capacity to alleviate the blocking due to the hot-spot traffic.
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