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Incorporating Retransmission in Quality-of-Service Guaranteed Multiuser Scheduling Over Wireless Links

机译:在无线链路上将重传纳入服务质量保证的多用户调度中

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摘要

A cross-layer optimization scheme combining retransmission with multiuser diversity is investigated for wireless communications. To this end, the joint design of adaptive modulation and coding (AMC) with the retransmission-based automatic repeat request (ARQ) protocol is first outlined. This design is then employed to devise multiuser scheduling schemes that can optimally capture the available multiuser diversity and retransmission-induced spectral efficiency gain. In addition, the proposed stochastic scheduling algorithms can operate even when the underlying fading channel distribution is unknown a priori while asymptotically converging to the optimum benchmark with guarantees on prescribed fairness and rate/delay requirements for a heterogeneous network traffic. Numerical results are provided to verify the advantage of these novel methods for multiuser transmissions over Nakagami block-fading channels.
机译:研究了将重传与多用户分集相结合的跨层优化方案,用于无线通信。为此,首先概述了自适应调制和编码(AMC)与基于重传的自动重发请求(ARQ)协议的联合设计。然后,采用该设计来设计多用户调度方案,该方案可以最佳地捕获可用的多用户分集和重传导致的频谱效率增益。此外,即使在先验未知基础衰落信道分布的情况下,所提出的随机调度算法也可以运行,同时渐进地收敛到最佳基准,同时保证异构网络流量的规定公平性和速率/延迟要求。提供了数值结果,以验证这些新方法在Nakagami衰落信道上进行多用户传输的优势。

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