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Efficient Distributed MAC for Dynamic Demands: Congestion and Age Based Designs

IEEE-ACM TRANSACTIONS ON NETWORKING(2023)

Ohio State Univ | Univ Southern Calif

Cited 3|Views33
Abstract
Future generation wireless technologies are expected to serve an increasingly dense and dynamic population of users that generate short bundles of information to be transferred over the shared spectrum. This calls for new distributed and low-overhead Multiple-Access-Control (MAC) strategies to serve such dynamic demands with spectral efficiency characteristics. In this work, we address this need by identifying and developing two fundamentally different MAC paradigms: (i) congestion-based paradigm that estimates the congestion level in the system and adapts to it; and (ii) age-based paradigm that prioritizes demands based on their ages. Despite their apparent differences, we develop policies under each paradigm in a generic multi-channel access scenario that are provably throughput-optimal when they employ any asymptotically-efficient channel encoding/decoding mechanism. We also characterize the stability regions of the two designs, and investigate the conditions under which one design outperforms the other. We perform extensive simulations to validate the theoretical claims and investigate the non-asymptotic performances of our designs.
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Key words
Asymptotic stability,Delays,Base stations,Stability criteria,Protocols,Time-frequency analysis,Throughput,Distributed MAC,throughput-optimal scheduling,IoT,5G,network stability,delay and age analysis
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要点】:论文提出两种新型的分布式多接入控制(MAC)策略,分别是基于拥塞和基于信息年龄的设计,以满足未来无线技术中密集动态用户群体的需求,并通过仿真验证了这些策略的吞吐量和稳定性。

方法】:作者通过建立拥塞估计机制和信息年龄优先级机制,开发出两种MAC策略,并在多信道接入场景下证明了这些策略在采用渐近有效信道编码/解码机制时是吞吐量最优的。

实验】:通过广泛仿真,验证了理论断言,并探究了非渐近性能。具体使用的数据集未在摘要中提及,但实验结果支持了设计的有效性。