Evolutionary optimization for the channel assignment problem in wireless mobile network

Chia, Y. S. and Siew, Z. W. and Yang, Soo Siang and Yew, Hoe Tung and Teo, Kenneth Tze Kin (2011) Evolutionary optimization for the channel assignment problem in wireless mobile network. In: Proceedings of the 3rd (2011) CUTSE International Conference, 8-9 November, 2011, Miri, Sarawak, Malaysia.

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Abstract

The channel assignment problem in wireless mobile network is consist of the assignment of appropriate frequency spectrum channels to requested calls while satisfying the electromagnetic compatibility (EMC) constraint. However with the limited capacity of wireless mobile frequency spectrum, an effective channel assignment technique is important for resource management and to reduce the effect of the interference. Most of the existing channel assignment techniques are based on deterministic methods. In this paper, an adaptive channel assignment technique based on genetic algorithm (GA) is introduced. The most significant advantage of GA based optimization in channel assignment problem is its capability to handle both the reassignment of existing calls as well as the allocation of channel to a new call in an adaptive process to maximize the utility of the limited resources. The population size is adapted to the number of eligible channels for a particular cell upon new call arrivals in order to achieve reasonable convergence speed. The MATLAB simulation on a 49-cells network model for both uniform and nonuniform traffic demands showed that the average new incoming call blocking probability for the proposed channel optimization method is lower than the deterministic channel assignment methods.

Item Type:Conference Paper (UNSPECIFIED)
Uncontrolled Keywords:Evolutionary optimization, Genetic algorithm, Channel assignment problem, Wireless mobile network
Subjects:?? TK5101-6720 ??
Q Science > QA Mathematics
Divisions:SCHOOL > School of Engineering and Information Technology
ID Code:4547
Deposited By:IR Admin
Deposited On:12 Jul 2012 12:13
Last Modified:08 Sep 2014 15:23

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