论文标题
关于具有随机DTX的元分布和局部延迟的局部延迟：分析和优化
On Meta Distribution and Local Delay for Cache-Enabled Networks with Random DTX: Analysis and Optimization
论文作者
论文摘要
对支持缓存网络的细粒度分析对于系统设计至关重要。在本文中，我们专注于支持基于缓存的网络的信噪比（SIR）的元分布，在该网络中，基本站点（BSS）的位置（BSS）被建模为泊松点过程（PPP）。随着随机缓存和随机不连续传输（DTX）方案的应用，我们通过使用随机几何形状来得出条件成功传输概率（STP）的矩，精确的元分布及其β近似。还得出了局部延迟（即网络抖动）的均值和方差的闭合形式表达式。然后，我们通过共同优化缓存概率和BS活动概率来考虑平均STP的最大化以及平均系统传输延迟的最小化。最后，数值结果证明了所提出的优化方案比现有的缓存策略的优越性，并揭示了关键网络参数对启用缓存网络的影响，从平均STP，STP差异，元分布，平均局部延迟和网络抖动方面。
A fine-grained analysis of the cache-enabled networks is crucial for system design. In this paper, we focus on the meta distribution of the signal-to-interference ratio (SIR) for the cache-enabled networks where the locations of the base stations (BSs) are modeled as a Poisson point process (PPP). With the application of the random caching and the random discontinuous transmission (DTX) schemes, we derive the moments of the conditional successful transmission probability (STP), the exact meta distribution and its beta approximation by utilizing stochastic geometry. The closed-form expressions of the mean and variance of the local delay (i.e., the network jitter) are also derived. We then consider the maximization of the mean STP and the minimization of the average system transmission delay by jointly optimizing the caching probability and the BS active probability. Finally, the numerical results demonstrate the superiority of the proposed optimization schemes over the existing caching strategies and reveal the impacts of the key network parameters on the cache-enabled networks in terms of mean STP, STP variance, meta distribution, mean local delay and network jitter.
