基于用户调度策略的高铁网络优化

Optimization of Wireless Network in High-Speed Railways Based on User Scheduling Strategy

伴随4G无线通信技术的不断发展完善,用户对各类覆盖场景的网络业务要求随之提高,高速铁路的用户感知直接影响网络口碑。提出一种基于用户调度策略的高铁网络优化方案,在保证高速用户和低速用户最低QoS(服务质量)需求的基础上,将剩余资源优先分配给高速用户。在南通某高铁站点进行了为期1个月的测试,结果表明,该方案能有效提升高速用户调度资源的分配效率,增加调度机会,高速用户上行速率提升20.87%,下行速率提升23.57%,用户感知得到显著改善。

The improvement of 4G network services has led to the high demand for its coverage in various situations.The network reputation in high-speed railways depends directly on users’perception of the network service.On the basis of user scheduling strategy,a scheme of optimized network in high-speed railways was put forward in this paper,aimed at ensuring the minimum QoS(Quality of Service)requirements for both users of high-speed and low-speed network while prioritizing the remaining resources to the former.The pilot project showed that the allocation efficiency of resources scheduled by high-speed users was greatly enhanced,and the scheduling opportunities were also increased.The scheme was tested at a high-speed rail station in Nantong for one month.The test results revealed that the rates of upstream and downstream for high-speed users rose respectively by 19.5%and 13.9%,which significantly improved users’perception.