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arXiv 1302.3085cs.NI
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一种自组织异构LTE系统的能量感知协议

An Energy-Aware Protocol for Self-Organizing Heterogeneous LTE Systems

I-Hong Hou, Chung Shue Chen

摘要:

研究了异构LTE系统的自组织问题。我们提出了一个模型,共同考虑异构LTE系统的几个重要特性,包括使用正交频分多址(OFDMA),频率选择性衰落的每个链路,不同的链路之间的干扰,以及不同类型的基站的不同传输能力。我们还通过考虑基站的功率消耗(包括无线传输的功率消耗和操作的功率消耗)和能源价格来考虑能源成本。基于这个模型,我们的目标是提出一个分布式协议,提高了系统的频谱效率,这是衡量的加权比例公平客户端的吞吐量之间,并降低了能源成本。我们确定,有几个重要的组成部分参与这个问题。我们提出了这些组件的分布式策略。每一个建议的策略需要小的计算和通信开销。此外,组件之间的相互作用也被认为是在所提出的策略。因此,这些策略导致联合考虑异构LTE系统的所有因素的解决方案。仿真结果也表明,我们提出的策略实现了更好的性能比现有的。

英文摘要:

This paper studies the problem of self-organizing heterogeneous LTE systems. We propose a model that jointly considers several important characteristics of heterogeneous LTE system, including the usage of orthogonal frequency division multiple access (OFDMA), the frequency-selective fading for each link, the interference among different links, and the different transmission capabilities of different types of base stations. We also consider the cost of energy by taking into account the power consumption, including that for wireless transmission and that for operation, of base stations and the price of energy. Based on this model, we aim to propose a distributed protocol that improves the spectrum efficiency of the system, which is measured in terms of the weighted proportional fairness among the throughputs of clients, and reduces the cost of energy. We identify that there are several important components involved in this problem. We propose distributed strategies for each of these components. Each of the proposed strategies requires small computational and communicational overheads. Moreover, the interactions between components are also considered in the proposed strategies. Hence, these strategies result in a solution that jointly considers all factors of heterogeneous LTE systems. Simulation results also show that our proposed strategies achieve much better performance than existing ones.

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