Resource Allocation in Moving and Fixed General Authorized Access Users in Spectrum Access System
Resource Allocation in Moving and Fixed General Authorized Access Users in Spectrum Access System
复制标题
频谱接入系统中移动和固定一般授权接入用户的资源分配
DOI：
10.1109/access.2019.2933043
复制
发表时间：
2019
期刊：
影响因子：
3.9
通讯作者：
B. Jayawickrama
中科院分区：
文献类型：
--
作者：
S. Basnet;Ying He;E. Dutkiewicz;B. Jayawickrama
频谱接入系统（SAS）是为了在现有用户和公民宽带无线电业务设备（即优先接入用户和一般授权接入（GAA）用户）之间共享频谱而提出的频谱共享框架。本文提出了一种基于干扰角的移动和固定GAA用户联合资源（信道和发射功率）分配方法。对于移动GAA用户，可以互相听到的GAA用户的集合在不同的时刻会发生变化，这使得资源分配问题更具挑战性。固定GAA用户和移动GAA用户的资源分配考虑优先级用户共存，移动GAA用户和固定GAA用户共存。对于固定GAA用户和移动GAA用户的无冲突资源分配，我们建议对处于移动GAA用户干扰范围内的固定GAA用户波束使用最大允许发射功率。仿真结果表明，在满足预定干扰约束的情况下，该方法提高了系统容量。
Spectrum access system (SAS) is a spectrum sharing framework proposed to share the spectrum between the incumbent users and the citizen broadband radio service devices, i.e. Priority access users and general authorized access (GAA) users. In this paper, we propose an interfering angle based method for the joint resource (channel and transmit power) allocation problem to the mobile and fixed GAA users. With mobile GAA users, the set of GAA users that can hear each other will change at different time instants making the resource allocation problem more challenging. The resource allocation of fixed and mobile GAA users is done considering coexistence with priority users, as well as coexistence between mobile and fixed GAA users. For the conflict-free resource allocation to fixed and mobile GAA users, we propose to use the maximum allowed transmit power for the beams of fixed GAA users that lie within the interference range of mobile GAA users. The simulation results show improved capacity from our proposed method while satisfying a predetermined interference constraint.