基于5G切片和优先级的流量隔离性能研究

Research on traffic isolation performance based on 5g slice and priority

摘要:

随着基于3GPP标准的关键任务(MC)移动宽带技术的部署，可为公共保护和救灾提供宽带通信能力。常见方法是在公共移动网络上提供MC服务和商业流量（CO），并使用优先级机制来保护拥塞情况下的MC连接。然而，这种方法在特定单元中的MC流量激增前，商业流量不受保护，因为所有资源都将被分配来服务于这种流量。在此背景下，提出了一种稳定性较好的多路MC和具有拥塞保护的商业服务的解决方案，该解决方案是基于5G网络切片特性。本文主要描述了在结合优先级的基础上如何在5G无线电接入网(RAN)中参数化不同的切片以及支持无线电资源分配的底层无线电资源管理(RRM)功能的操作从而为每种类型的服务建立无线电负载保证。通过MATLAB仿真结果表明与仅依赖于优先级化机制的解决方案相比，本次采用的切片配置方法在流量隔离方面得到了改进，为不同类型的服务提供了可靠保障。

Abstract:

With the deployment of mission critical (MC) mobile broadband technology based on 3GPP standard, broadband communication capability can be provided for public protection and disaster relief. The common method is to provide MC Service and commercial traffic (CO) on public mobile network, and use priority mechanism to protect MC connection in case of congestion. However, in this method, commercial traffic is not protected before MC traffic in a specific unit surges, because all resources will be allocated to serve this traffic. In this context, a solution of multi-channel MC with good stability and commercial service with congestion protection is proposed. The solution is based on 5g network slicing characteristics. This paper mainly describes how to parameterize different slices in 5g radio access network (RAN) and the operation of the underlying radio resource management (RRM) function supporting radio resource allocation on the basis of combining priority, so as to establish radio load guarantee for each type of service. The MATLAB simulation results show that compared with the solution that only depends on the prioritization mechanism, the slice configuration method adopted this time has been improved in traffic isolation and provides a reliable guarantee for different types of services.