The highly directional beams applied in millimeter wave (mmWave) cellular networks make it possible to achieve near interference-free (NIF) transmission under judiciously designed space-time user scheduling, where the power of intra-/inter-cell interference between any two users is below a predefined threshold. In this paper, we investigate two aspects of the NIF space-time user scheduling in a multi-cell mmWave network with multi-RF-chain base stations. Firstly, given that each user has a requirement on the number of space-time resource elements, we study the NIF user scheduling problem to minimize the unfulfilled user requirements, so that the space-time resources can be utilized most efficiently and meanwhile all strong interferences are avoided. A near-optimal scheduling algorithm is proposed with performance close to the lower bound of unfulfilled requirements. Furthermore, we study the joint NIF user scheduling and power allocation problem to minimize the power consumption under the constraint of rate requirements. Based on our proposed NIF scheduling, an energy-efficient joint scheduling and power allocation scheme is designed with limited channel state information, which outperforms the existing independent set based schemes, and has near-optimal performance as well.

翻译：用于毫米波(mmWave)蜂窝网络的高度定向波束使得有可能在明智设计的时空用户日程安排下实现近乎无干扰的传输(NIF),在这种安排下,任何两个用户之间的内部/细胞间干扰的力量都低于预先确定的临界值;在本文件中,我们调查了NIF空间时间用户日程安排的两个方面,即与多区域链基站的多细胞-毫米蜂窝网络的多细胞-蜂窝网络;首先,鉴于每个用户对空间-时间资源要素数量有要求,我们研究NIF用户日程安排问题,以尽量减少未满足的用户需求,从而能够最高效地利用空间-时间资源,同时避免所有强力干扰。提出了接近于未满足要求的较低约束性能的近最佳的时间安排算法。此外,我们研究了NIF用户联合日程安排和电力分配问题,以在费率要求的限制下最大限度地减少电力消耗。根据我们提议的NIF日程安排,一个节能联合日程安排和电力分配计划的设计,其频道状态信息有限,这比现有的独立既定计划要好。