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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 location area based approach proposed by researchers and nature inspired approach proposed by the researchers, to reduce location management cost. However, there is tradeoff between reduction of location update cost and paging.