The millimeter wave (mmWave)‐enabled 5G wireless networks can meet the increasing demands of data rates and mobile subscriptions. However, the mmWave wireless networks require directional beamforming to overcome the propagation and penetration losses. The directional communication in turn increases the user equipment's (UE) energy expenses, as it has to perform beam searching to identify the best beam pair. Discontinuous reception (DRX) is a popular mechanism for energy saving in LTE/LTE‐A networks. The DRX mechanism when applied to mmWave‐5G networks, would also be required to incorporate the beam searching procedure making it less effective. In this article, we propose signaling‐based DRX to improve UE's energy saving in 5G networks by reducing the impediments of beam searching. Though the frequent requirement of beam searching in 5G cannot be avoided, the time in the beam searching can be curtailed if data/paging is absent. We propose to use power saving indication (PSI) that can be applied to both, connected‐ and idle‐state DRX. We employed semi‐Markov model to obtain the probabilistic estimation of power saving and delay for the proposed mechanism. The performance analysis shows that signaling can be used to improve energy saving in 5G DRX by limiting beam searching when not necessary.

中文翻译：

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5G通信中基于信令的DRX的分析模型

启用毫米波（mmWave）的5G无线网络可以满足日益增长的数据速率和移动订户需求。但是，毫米波无线网络需要定向波束成形，以克服传播和穿透损耗。定向通信反过来增加了用户设备（UE）的能量消耗，因为它必须执行波束搜索以识别最佳波束对。不连续接收（DRX）是LTE / LTE-A网络中一种节能的流行机制。当将DRX机制应用于mmWave-5G网络时，还需要结合波束搜索程序，使其效率降低。在本文中，我们建议基于信令的DRX通过减少波束搜索的障碍来改善5G网络中UE的节能效果。尽管无法避免5G中波束搜索的频繁需求，但是如果没有数据/寻呼，则可以减少波束搜索的时间。我们建议使用可同时应用于连接状态和空闲状态DRX的省电指示（PSI）。我们使用半马尔可夫模型来获得所提出机制的功率节省和延迟的概率估计。性能分析表明，通过在必要时限制波束搜索，可以使用信令来提高5G DRX的节能效果。