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Delay and Peak-Age-of-Information of ALOHA Networks With Limited Retransmissions
IEEE Wireless Communications Letters ( IF 6.3 ) Pub Date : 2021-07-29 , DOI: 10.1109/lwc.2021.3100934
Plinio S. Dester , Pedro H. J. Nardelli , Francisco Helder C. dos Santos Filho , Paulo Cardieri , Petar Popovski

This letter analyzes the impact of packet retransmissions on the performance of wireless random access protocols. In particular, we focus on the effects of two controllable parameters, namely the rate at which retransmissions occur and the number of allowed retransmissions. In a scenario where packets are generated according to a Poisson process and new packets substitute old ones upon arrival, we determine the conditions in which a given throughput or packet success probability constraint is achievable. We also prove, for a general packet success probability function of the traffic, that selecting the smallest feasible value of the number of allowed retransmissions along with an appropriate retransmission rate is optimal in terms of mean delay to transmit packets and mean Peak-Age-of-Information . We illustrate this result with numerical examples.

中文翻译:

具有有限重传的 ALOHA 网络的延迟和信息峰值年龄

这封信分析了数据包重传对无线随机接入协议性能的影响。特别地,我们关注两个可控参数的影响,即重传发生的速率和允许的重传次数。在根据泊松过程生成数据包并且新数据包在到达时替换旧数据包的情况下,我们确定可实现给定吞吐量或数据包成功概率约束的条件。我们还证明,对于流量的一般数据包成功概率函数,选择允许的重传次数的最小可行值以及适当的重传率对于传输数据包的平均延迟和平均信息高峰时代。我们用数值例子来说明这个结果。
更新日期:2021-07-29
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