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arXiv 1905.03089cs.NI
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底层设备到多设备通信中的能量高效功率和信道分配

Energy Efficient Power and Channel Allocation in Underlay Device to Multi Device Communications

Mariem Hmila, Manuel Fernández-Veiga, Miguel Rodríguez-Pérez, Sergio Herrería-Alonso

摘要:

在本文中,我们优化的能量效率(位/秒/赫兹/J)的设备到多设备(D2 MD)无线通信。虽然已经广泛研究了设备到设备场景以提高蜂窝网络中的频谱效率,但是多播通信的使用开启了也在组内重用频谱资源的可能性。该优化问题是一个混合整数非线性联合优化的功率控制和分配资源块(RB)到每个组。我们的模型明确考虑资源共享,让同信道传输RB(最多r个发射机)和/或通过s个不同的信道在每个组中的传输。我们使用迭代分解的方法,使用第一匹配理论找到一个稳定的,即使次优的信道分配,然后通过分式规划优化每个组中的传输功率矢量。此外,在此框架内,网络的能量效率和最大最小的个人能量效率进行了研究。我们数值表征的能量有效的容量区域,我们的研究结果表明,归一化的能量效率是接近最佳的(90%以上的网络容量)的最小速率约束范围很广。这种性能优于以前提出的其他基于匹配的技术。

英文摘要:

In this paper, we optimize the energy efficiency (bits/s/Hz/J) of device-to-multi-device (D2MD) wireless communications. While the device-to-device scenario has been extensively studied to improve the spectral efficiency in cellular networks, the use of multicast communications opens the possibility of reusing the spectrum resources also inside the groups. The optimization problem is formulated as a mixed integer non-linear joint optimization for the power control and allocation of resource blocks (RBs) to each group. Our model explicitly considers resource sharing by letting co-channel transmission over a RB (up to a maximum of r transmitters) and/or transmission through s different channels in each group. We use an iterative decomposition approach, using first matching theory to find a stable even if sub-optimal channel allocation, to then optimize the transmission power vectors in each group via fractional programming. Additionally, within this framework, both the network energy efficiency and the max-min individual energy efficiency are investigated. We characterize numerically the energy-efficient capacity region, and our results show that the normalized energy efficiency is nearly optimal (above 90 percent of the network capacity) for a wide range of minimum-rate constraints. This performance is better than that of other matching-based techniques previously proposed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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