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To handle call delivery for mobile station, it's probable location should be known to the network. For that location management is required. Location management has two basic operations: location update and paging. The goal of an efficient location management scheme is to maintain and provide locations of mobile stations at low cost. This paper presents various approach proposed by researchers to reduce location management cost. However, there is tradeoff between reduction of location update cost and paging. Result analysis of a nature inspired technique (river formation dynamics) and an artificial intelligent technique (genetic algorithm) is presented.