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Distributed cross-layer coordination of congestion control and resource allocation in S-TDMA wireless networks

机译：S-TDMA无线网络中的拥塞控制和资源分配的分布式跨层协调

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摘要

We consider the problem of joint congestion control and resource allocation in spatial-TDMA wireless networks. The design problem is posed as a utility maximization problem subject to link rate constraints which involve both transmission scheduling and power allocation. Starting from the performance limitations of a centralized optimization based on global network information, we proceed systematically in our development of two distributed and transparent protocols that rely on local information only. In the process, we introduce a novel decomposition method for convex optimization, establish its convergence for the utility maximization problem, and demonstrate how it suggests a distributed solution based on TCP/AQM and incremental updates of the transmission schedule. We develop a two-step procedure for finding the schedule updates and suggest two schemes for distributed link scheduling and power control under realistic interference models. Although the final protocols are suboptimal, we isolate and quantify the performance losses incurred by each simplification and demonstrate strong performance in examples.
机译：我们考虑空间TDMA无线网络中的联合拥塞控制和资源分配问题。设计问题被认为是效用最大化问题，它受到链路速率约束的影响，链路速率约束涉及传输调度和功率分配。从基于全局网络信息的集中优化的性能限制开始，我们系统地进行了两个仅依赖于本地信息的分布式透明协议的开发。在此过程中，我们介绍了一种新的凸优化分解方法，针对效用最大化问题建立了收敛性，并演示了它如何提出基于TCP / AQM和传输调度增量更新的分布式解决方案。我们开发了一个两步过程来查找调度更新，并提出了两种在实际干扰模型下进行分布式链路调度和功率控制的方案。尽管最终协议不是最理想的，但是我们隔离并量化了每次简化所导致的性能损失，并在示例中展示了强大的性能。

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