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arXiv 1301.3230cs.NI
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一种基于多址接入策略的服务质量框架

A Framework for Quality of Service with a Multiple Access Strategy

Easwar Vivek Mangipudi, Venkatesh Ramaiyan

摘要:

研究了在不可靠无线信道中具有硬延迟约束的实时业务调度问题。数据包以恒定的速率到达网络,并且必须在衰落无线信道中的固定数量的时隙内传递。对于具有集中式调度器的基础设施模式的业务,我们感兴趣的是实时的业务可实现的长时间平均吞吐量。在文献[1]中,作者通过使用工作负载表征来确定必要和充分条件,研究了可行吞吐量向量。在我们的工作中,我们提供了一个表征的可行的吞吐量向量使用的速率区域的概念。然后,我们讨论了在[1]中研究的网络模型的扩展,通过在竞争期间允许多址接入,并提出了对无线网络的速率区域的增强。我们的特点是可行的吞吐量向量的多址技术和研究吞吐量最优和效用最大化的网络场景的策略。使用模拟,我们评估所提出的策略的性能,并讨论其优点。

英文摘要:

We study a problem of scheduling real-time traffic with hard delay constraints in an unreliable wireless channel. Packets arrive at a constant rate to the network and have to be delivered within a fixed number of slots in a fading wireless channel. For an infrastructure mode of traffic with a centralized scheduler, we are interested in the long time average throughput achievable for the real time traffic. In [1], the authors have stud- ied the feasible throughput vectors by identifying the necessary and sufficient conditions using work load characterization. In our work, we provide a characterization of the feasible throughput vectors using the notion of the rate region. We then discuss an extension to the network model studied in [1] by allowing multiple access during contention and propose an enhancement to the rate region of the wireless network. We characterize the feasible throughput vectors with the multiple access technique and study throughput optimal and utility maximizing strategies for the network scenario. Using simulations, we evaluate the performance of the proposed strategy and discuss its advantages.

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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