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Joint base station association and power control for uplink cognitive small cell network

机译：上行链路认知小型电池网络的联合基站关联和功率控制

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摘要

In this paper, we propose a framework to jointly optimize user association and power control for the uplink cognitive small cell network (CSN). In the considered CSN, small cell base stations (SBSs) are deployed to serve a set of small cell user equipments (SUEs) by sharing the same licensed spectrum with a macrocell base station. The problem of joint user association and power allocation is formulated as an optimization problem, in which the goal is to maximize the overall uplink throughput while guaranteeing the SINR requirements of the served SUEs and MBS protection. To solve this problem, a distributed framework based on dual decomposition is proposed to find sub-optimal solution of the user association and transmit power in distributed manner. Moreover, distributed frameworks to achieve suboptimal solutions with low-computation complexity are also proposed. Simulation results show that the proposed approaches obtain suboptimal solutions with a small number of iterations.
机译：在本文中，我们提出了一个框架，共同优化用户关联和用于上行链路认知小型电池网络（CSN）的功率控制。在所考虑的CSN中，部署小小区基站（SBSS）以通过与宏小区基站共享相同的许可频谱来服务一组小小区用户设备（SUE）。联合用户关联和功率分配的问题被制定为优化问题，其中目标是最大化整体上行链路吞吐量，同时保证服务的起诉和MBS保护的SINR要求。为了解决这个问题，提出了一种基于双分解的分布式框架，用于找到用户关联的子最优解，并以分布式方式发射功率。此外，还提出了具有低计算复杂性的分布式框架，以实现具有低计算复杂性的次优解。仿真结果表明，拟议的方法获得了少数迭代的次优解决方案。

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