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Location management and paging management are two key issues in mobile cellular networks. In this paper, an intra location area location update scheme is proposed to increase paging accuracy for mobile cellular networks. In the proposed scheme, each mobile terminal has a valid/invalid anchor-cell, which may be dynamically changed. Whenever the mobile terminal enters a cell, a timer is set. The mobile terminal realizes that the entered cell is its current anchor-cell if the timer expires before leaving the cell. An analytical model is proposed, and results show that the proposed scheme outperforms some existing schemes.