Article

An efficient heuristic algorithm for channel assignment problem in cellular radio networks

Dept. of Software & Inf. Sci., Iwate Prefectural Univ.
IEEE Transactions on Vehicular Technology (Impact Factor: 2.06). 12/2001; DOI: 10.1109/25.966583
Source: IEEE Xplore

ABSTRACT This paper presents an efficient heuristic algorithm for the
channel assignment problem in cellular radio networks. The task is to
find channel assignment with minimum frequency bandwidth necessary to
satisfy given demands from different nodes in a cellular network. At the
same time the interference among calls within the same cell and from
different neighboring cells are to be avoided, where interference is
specified as the minimum frequency distance to be maintained between
channels assigned to a pair of nodes. The simplest version of this
problem, where only cochannel interferences are considered, is
NP-complete. The proposed algorithm could generate a population of
random valid solutions of the problem very fast. The best among them is
the optimum or very near to optimum solution. For all problems with
known optimal solutions, the algorithm could find them. A statistical
estimation of the performance of the proposed algorithm is done.
Comparison with other methods show that our algorithm works better than
the algorithms that we have investigated

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