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| A New Resource Allocation Algorithm Based on the Different Rate Requirements of Terminal User in Hybrid Network of Device-to-Device and Cellular |
| Liu Wen-wen Yang Yang Peng Tao Wang Wen-bo |
| College of Communication and Information Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China |
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Abstract A new wireless resources allocation scheme is proposed to enhance network performance for both cellular and D2D (Device-to-Device) terminal users in a hybrid network. The frequency resource unit and power control can be formed as a sum-rate optimization problem with the constraints of power limitation and the ratio of the rate requirement. The ratio can be utilized to distinguish the rate requirements of both cellular and D2D users with different QoS (Quality of Service). By using the Lagrange Multiplier Process, this study derives the optimal formula of power and frequency resource unit allocation for both cellular and D2D terminal users. The optimal formula shows that the relationship between the transmission power and frequency resource unit allocation is a problem of mutual constraint. And then the wireless resource allocation scheme algorithm is given. Especially the power allocation can be resolved by the water-filling procedure. The simulation results show that the proposed new resource allocation scheme improves the sum-throughput significantly as well as fairness.
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Received: 28 November 2013
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Corresponding Authors:
Liu Wen-wen
E-mail: wenwl67@gmail.com
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2014, Vol. 36 
