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A novel location model for 4G mobile communication networks is proposed in the paper. The model utilizes the more precise relative distance estimated by short-range signals between the destination mobile terminal to be located (abbr. DT) and the other mobile terminals near DT to be the reference mobile terminal assisting DT (abbr. RT) to improve the location accuracy of DT. Besides, Triangle Similarity Theorem is firstly introduced into the model to search the desired optimal /suboptimal triangle. It is shown that by analysis and simulation that more accurate estimated position for DT in stationary status can be achieved based on the model above.