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Energy-efficient RRH-association and resource allocation in D2D enabled multi-tier 5G C-RAN
Telecommunication Systems ( IF 1.7 ) Pub Date : 2019-12-20 , DOI: 10.1007/s11235-019-00643-y
Sher Ali , Ayaz Ahmad , Yasir Faheem , Muhammad Altaf , Habib Ullah

The device-to-device (D2D) enabled cloud radio access network (C-RAN) is considered as a promising network model which provides high data rate and energy efficiency. In this paper, we formulate a joint mode selection, subchannel assignment (SA), power allocation (PA) and remote radio head (RRH)-association problem in D2D enabled single carrier frequency division multiple access based C-RAN in the uplink. This problem is mixed-integer non-linear problem which is extremely difficult to solve in its original form. To solve this problem, we propose an iterative technique which solves this problem in two stages; mode selection stage and joint SA, PA and RRH-association (SAPARA) stage. For mode selection, a link quality based technique is presented while, for joint SAPARA, we developed an iterative technique that solves this this problem in three steps such that SA and PA are carried out in the first and second step, respectively, while RRH-association is performed in the third step. Our results show the efficiency of the presented techniques.



中文翻译:

启用D2D的多层5G C-RAN中的高能效RRH关联和资源分配

支持设备到设备(D2D)的云无线电接入网络(C-RAN)被认为是一种有前途的网络模型,可提供高数据速率和能源效率。在本文中,我们在上行链路中基于D2D的单载波频分多址C-RAN中,制定了联合模式选择,子信道分配(SA),功率分配(PA)和远程无线头(RRH)关联问题。这个问题是混合整数非线性问题,以其原始形式很难解决。为了解决这个问题,我们提出了一种迭代技术,它可以分两个阶段解决这个问题。模式选择阶段以及联合SA,PA和RRH关联(SAPARA)阶段。对于模式选择,提出了一种基于链路质量的技术,而对于联合SAPARA,我们开发了一种迭代技术来解决此问题,分三步进行,分别在第一步和第二步执行SA和PA,而在第三步执行RRH关联。我们的结果表明了所提出技术的效率。

更新日期:2019-12-20
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