Operator Profit-Aware Wireless Virtualization for Device-to-Device Communications Underlaying LTE Networks

Operator Profit-Aware Wireless Virtualization for Device-to-Device Communications Underlaying LTE Networks
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针对 LTE 网络下的设备到设备通信的运营商利润感知无线虚拟化

DOI:
10.1109/access.2017.2715813
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发表时间:
2017-06
期刊:
影响因子:
3.9
通讯作者:
Zhu Hongbo
Zhu Hongbo
中科院分区:
计算机科学3区
文献类型:
--
作者:
Cheng Yulun;Yang Longxiang;Zhu Hongbo

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本文研究了长期演进网络下的设备到设备(D2 D)通信中的虚拟资源分配对运营商的影响。利用功率-带宽乘积模型作为运营商成本的度量,将虚拟资源分配问题转化为一个二进制整数规划问题,以最大化所有用户的总速率与所消耗的资源之差。为了降低问题的复杂性,将问题分解为两个子问题,并针对每个子问题提出了一种启发式算法,将问题的指数复杂性转化为多项式复杂性。仿真结果表明,该方案在复杂度较低的情况下接近最优解.同时,它在总利润方面也优于基准,并且实现了运营商成本与蜂窝和D2 D用户的总速率之间的期望折衷。
This paper investigates the operator profit from virtual resource allocation in device-to-device (D2D) communications underlaying long-term evolution networks. By utilizing the power-bandwidth product model as the metric of operator cost, the virtual resource allocation is formulated as a binary integer programming to maximize the difference between the sum rate of all the users and the consumed resources. To reduce the complexity, the formulated problem is decomposed to two subproblems, and for each subproblem, a heuristic algorithm is proposed to transfer the complexity of exponent into polynomial. Simulation results show that the proposed scheme is close to the optimal solution with lower complexity. Meanwhile, it also outperforms the benchmark in terms of the total profit, and enables the desired tradeoff between the operator cost and sum rate of both cellular and D2D users.
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