Abstract:

To solve the wireless backhaul problem in 5G dynamic heterogeneous scenarios, a wireless backhaul optimization algorithm considering delay jitter is proposed. Firstly, the problem of delay and delay jitter in 5G dynamic heterogeneous scenarios is systematically analyzed, and an optimization index is established. Then, a basic backhaul model is constructed. On this basis, considering delay optimization requirements, improved model 1 is constructed by adding delay constraints; considering network overload situations, improved model 2 is constructed by relaxing channel number allocation variables. Then, the corresponding hierarchical algorithms are proposed to quickly solve the above models. Simulation results show that the proposed algorithm has better delay jitter performance than three existing wireless backhaul optimization algorithms.

Key words: 5G environment, dynamic heterogeneous networks, wireless backhaul optimization, delay, delay jitter

摘要：

为解决面向5G动态异构场景的无线回程问题，提出一种考虑时延抖动的无线回程优化算法。对5G动态异构场景下的时延和时延抖动问题进行了系统的分析，建立了优化指标，进一步构建了基本回程模型。在此基础上，考虑时延优化需求，引入时延约束构建改进模型1；考虑网络超载情况，松弛信道个数分配变量构建改进模型2，进而提出相应分层算法进行快速求解。仿真结果表明，与三类已有无线回程优化算法相比，所提算法具有更优的时延抖动性能。

关键词: 5G环境, 动态异构网络, 无线回程优化, 时延, 时延抖动