In the interference-limited communication scenarios, the interference impairs the data transmission and further degrades the delay performance. In this letter, the stochastic delay guarantee for a wireless dual-hop network with an interference-limited relay is investigated. Considering the randomness of wireless fading in both data links and interference links, the stochastic service process provided by the network is characterized in terms of the moment generation function (MGF). Due to the stochastic service process, the delay should be a random variable (RV). The delay-outage probability is defined as the probability that the actual transmission delay exceeds a threshold value. To evaluate the stochastic delay guarantee, we derive an upper bound on the minimum acceptable delay threshold and a lower bound on the maximum supportable transmitted data size with the constraint of the delay-outage probability, respectively. Simulation results show that the bounds obtained by the theoretical analysis are reasonably tight and well reflect the effect of the interference on the stochastic delay guarantee.

中文翻译：

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具有干扰限制中继的无线双跳网络的随机延迟保证

在干扰受限的通信场景中，干扰会损害数据传输并进一步降低延迟性能。在这封信中，研究了具有干扰限制中继的无线双跳网络的随机延迟保证。考虑到数据链路和干扰链路中无线衰落的随机性，网络提供的随机服务过程用矩生成函数(MGF)来表征。由于服务过程是随机的，延迟应该是一个随机变量（RV）。延迟中断概率定义为实际传输延迟超过阈值的概率。为了评估随机延迟保证，我们分别在延迟中断概率的约束下推导出最小可接受延迟阈值的上限和最大可支持传输数据大小的下限。仿真结果表明，理论分析得到的界限比较严密，很好地反映了干扰对随机延迟保证的影响。