To accommodate Machine-type Communication (MTC) service, the wireless network needs to support low-delay and low-jitter data transmission, realizing delay deterministic wireless network. This paper analyzes the delay and jitter of the wireless network with and without spectrum sharing. When sharing the spectrum of the licensed network, the spectrum band of wireless network can be expanded, such that the delay and jitter of data transmission are reduced. The challenge of this research is to model the relation between the delay/jitter and the parameters such as node distribution, transmit power, and bandwidth, etc. To this end, this paper applies stochastic geometry and queueing theory to analyze the outage probability of the licensed network and the delay performance of the wireless network with and without spectrum sharing. By establishing the M/G/1 queueing model for the queueing of the Base Station (BS) in the wireless network, the downlink delay and jitter are derived. Monte Carlo simulation results show that the spectrum sharing reduces the delay and jitter without causing serious interference to the licensed network, which can lay a foundation for the application of spectrum sharing in delay deterministic wireless network supporting MTC service.

翻译：为了支持机器类通信（MTC）业务，无线网络需要实现低时延、低抖动的数据传输，从而构建时延确定性无线网络。本文分析了有/无频谱共享情况下无线网络的时延与抖动特性。当共享授权网络频谱时，无线网络的频带得以扩展，从而降低数据传输的时延和抖动。本研究的挑战在于建立时延/抖动与节点分布、发射功率、带宽等参数之间的关联模型。为此，本文采用随机几何与排队论方法，分析了授权网络的中断概率，以及有/无频谱共享情况下无线网络的时延性能。通过建立无线网络基站（BS）排队的M/G/1排队模型，推导出下行链路的时延与抖动。蒙特卡洛仿真结果表明，频谱共享在未对授权网络造成严重干扰的前提下有效降低了时延与抖动，这为频谱共享在支持MTC业务的时延确定性无线网络中的应用奠定了基础。