A Multiple Access Channel Game Using Latency Metric
A Multiple Access Channel Game Using Latency Metric
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DOI：
10.1109/icassp39728.2021.9413529
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发表时间：
2021-06
期刊：
影响因子：
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通讯作者：
A. Garnaev;A. Petropulu;W. Trappe
中科院分区：
文献类型：
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作者：
A. Garnaev;A. Petropulu;W. Trappe
本文考虑了多个用户与一个基站通信的多址接入信道场景，并研究了功率分配是一个博弈论框架。通信度量是基站的反向信干噪比(SINR)，对于较低的SINR，它反映了通信延迟。每个用户都面临着一个权衡，一个是基站接收信号的延迟时间，另一个是用户使用在系统中造成干扰的特定量功率所需支付的费用。得到了闭合形式的平衡点，并证明了它的唯一性。结果表明，所得到的策略允许每个用户保持不间断的通信。为了进行比较，我们构建了一个具体的三用户网络场景，并研究了信干噪比和吞吐量指标。在这种情况下，我们表明，与延迟度量不同，SINR和吞吐量可能会导致多个均衡，这可能会导致通信不稳定。
The paper considers a multi-access channel scenario, where several users communicate with a base station, and investigates power allocation is a game-theoretic framework. The communication metric is the inverse signal-to-interference-plus-noise ratio (SINR) at the base station, which, for low SINR reflects communication delay. Each user faces a trade-off between the latency of the signal received by the base station, and the price that the user pays for using a specific amount of power that causes interference in the system. The equilibrium is derived in closed form and its uniqueness is proven. It is shown that the resulting strategy allows each user to maintain uninterrupted communication. For comparison purposes, we construct a specific three user network scenario, and study the SINR and throughput metrics. In that setting, we show that, unlike the latency metric, SINR and throughput may give rise to multiple equilibria, which may cause destabilization of communication.