Future wireless systems are expected to support mission-critical services demanding higher and higher reliability. In this letter, we dimension the radio resources needed to achieve a given failure probability target for ultra-reliable wireless systems in high interference conditions, assuming a protocol with frequency hopping combined with packet repetitions. We resort to packet erasure channel models and derive the minimum amount of resource units in the case of receiver with and without collision resolution capability, as well as the number of packet repetitions needed for achieving the failure probability target. Analytical results are numerically validated and can be used as a benchmark for realistic system simulations
翻译:未来无线系统需支持可靠性要求日益严苛的使命关键型业务。本文针对高频干扰环境下的超可靠无线系统,基于跳频结合分组重传协议,对达成给定失效概率目标所需的无线电资源进行量化分析。通过采用分组删除信道模型,推导出具备/不具备碰撞解决能力的接收机所需的最小资源单元数,以及实现失效概率目标所需的分组重传次数。分析结果经数值验证,可作为实际系统仿真的基准参考。