arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1403.7811cs.NI
收藏

通过能量感知的用户协作来增加小型小区中的主动增益

Increasing Opportunistic Gain in Small Cells Through Energy-Aware User Cooperation

Qing Wang, Balaji Rengarajan, Joerg Widmer

摘要:

为了满足对无线容量的日益增长的需求,未来的网络可能由密集布局的小小区组成。因此,每个小区中的用户数量减少,这导致机会调度的增益减小,特别是在动态业务负载下。我们提出了一种用户发起的基站(BS)透明的业务扩展方法,利用用户-用户通信,以增加BS调度的灵活性。该方案可以增加机会增益,提高用户性能。对于一个指定的性能和功耗之间的权衡,我们的最佳政策的特点是通过建模系统作为一个马尔可夫决策过程,也提出了一个启发式算法,产生显着的性能增益。我们的模拟表明,在以性能为中心的情况下,平均文件传输延迟降低高达20%,即使在同质的情况下,和高达50%的异构用户。此外,我们表明,大部分的性能改善可以实现一个小的增加功率消耗,例如,在能量敏感的情况下,高达78%的性能改进通常可以仅以性能为中心的情况的20%的功率消耗来实现。

英文摘要:

To meet the increasing demand for wireless capacity, future networks are likely to consist of dense layouts of small cells. The number of users in each cell is thus reduced which results in diminished gains from opportunistic scheduling, particularly under dynamic traffic loads. We propose an user-initiated base station (BS)-transparent traffic spreading approach that leverages user-user communication to increase BS scheduling flexibility. The proposed scheme can increase opportunistic gain and improve user performance. For a specified tradeoff between performance and power expenditure, we characterize the optimal policy by modeling the system as a Markov decision process and also present a heuristic algorithm that yields significant performance gains. Our simulations show that, in the performance-centric case, average file transfer delays are lowered by up to 20% even in homogeneous scenarios, and up to 50% with heterogeneous users. Further, we show that the bulk of the performance improvement can be achieved with a small increase in power expenditure, e.g., in an energy-sensitive case, up to 78% of the performance improvement can be typically achieved at only 20% of the power expenditure of the performance-centric case.

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。

↑