Reversible Models for Wireless Multi-Channel Multiple Access
Reversible Models for Wireless Multi-Channel Multiple Access
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DOI：
10.1109/infocom42981.2021.9488745
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发表时间：
2019-09
期刊：
影响因子：
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通讯作者：
M. Neely
中科院分区：
文献类型：
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作者：
M. Neely
提出了一种具有持久用户和非持久用户的无线多址系统的网络层模型。有一个具有多个相同通道的单一接入点。每个想要发送文件的用户首先扫描通道的一个子集，以找到空闲的通道。如果找到至少一个空闲通道，则用户通过该通道传输文件。如果没有找到空闲通道，持久用户将在以后的时间重复访问尝试，而非持久用户将离开。对于这样的情况，这是一个有用的数学模型：一组持久用户在接入点附近停留很长一段时间，而非持久用户来来去去。用户具有异构的活动行为、文件上传速率和服务持续时间。该系统是一个复杂的多维马尔可夫链。稳态概率是通过利用潜在可逆性和利用离散傅里叶变换得到的。这使得吞吐量和阻塞概率的表达式变得简单。
This paper presents a network layer model for a wireless multiple access system with both persistent and nonpersistent users. There is a single access point with multiple identical channels. Each user who wants to send a file first scans a subset of the channels to find one that is idle. If at least one idle channel is found, the user transmits a file over that channel. If no idle channel is found, a persistent user will repeat the access attempt at a later time, while a nonpersistent user will leave. This is a useful mathematical model for situations where a group of persistent users stay near an access point for an extended period of time while nonpersistent users come and go. Users have heterogeneous activity behavior, file upload rates, and service durations. The system is a complex multi-dimensional Markov chain. The steady state probabilities are found by exploiting a latent reversibility property and leveraging a discrete Fourier transform. This enables simple expressions for throughput and blocking probability.