Heterogeneous networks (HetNets) which are consisting of multiple radio access technologies (Multi-RATs), offer a promising architecture for enhancing the mobile network capacity and improving the users’ quality of experience (QoE). However, the main challenge in such network architecture is the development of an efficient cell selection solution. In this paper, a distributed algorithm for the cell selection process is proposed to consider the impact of fast fading channel on the system performance. The cell selection process is formulated as an optimization problem, which is combinatorial, for minimizing the average outage probability and thus improving the system performance. Since there are many services that require a low outage probability, i.e. more sensitive to the system degradation, we are focusing in our paper on Long term evolution (LTE) wireless local area network (WLAN) aggregation (LWA) technology and how it may be used to enhance the outage performance of the system. Therefore, based on well-formulated utility functions for users and different stations in the multi-RAT HetNet, a matching game-based approach is proposed to provide a solution for the cell selection problem. Simulation results show the superiority of the proposed matching scheme compared to other cell selection schemes especially in terms of the achieved average outage probability with a very close performance to the optimal heuristic search solution. Also, the performance improvement as a result of deploying LWA stations in the network is shown. The reason for this improvement is that the aggregation enhances the achieved throughput significantly, which in turn improves the outage performance.

由多种无线电接入技术（Multi-RAT）组成的异构网络（HetNet），为增强移动网络容量和改善用户的体验质量（QoE）提供了一种有前途的架构。然而，在这种网络架构中的主要挑战是开发有效的小区选择解决方案。本文提出了一种用于小区选择过程的分布式算法，以考虑快速衰落信道对系统性能的影响。小区选择过程被公式化为一个优化问题，该问题是组合的，用于使平均中断概率最小化，从而提高系统性能。由于有许多服务需要较低的中断概率，即对系统降级更敏感，我们将重点放在长期演进（LTE）无线局域网（WLAN）聚合（LWA）技术及其如何用于增强系统中断性能方面。因此，基于针对多RAT HetNet中的用户和不同站点的结构良好的效用函数，提出了一种基于匹配博弈的方法来为小区选择问题提供解决方案。仿真结果表明，与其他小区选择方案相比，所提出的匹配方案具有优越性，特别是在获得的平均中断概率方面，与最佳启发式搜索解决方案的性能非常接近。此外，还显示了由于在网络中部署LWA站而导致的性能改进。进行此改进的原因是，聚合显着提高了所获得的吞吐量，