适合4G基站回传的卫星通信思路探析

Study on Satellite Communication for 4G Backhaul

在山区、海域等光传输网络难于抵达的地区或者应急通信场景,4G基站回传仍然需要使用卫星通信。然而,4G业务实时性强、业务速率高的特点也放大了卫星通信带宽较小、时延较大的弱势。本文从这个矛盾出发,结合实际测试和应用情况,试从卫星带宽分配方式、TCP加速、包头压缩、Qo S等方面提出适合4G基站回传的卫星通信解决思路。

The satellite communication plays an important role on 4G backhaul for mountainous and sea areas where fiber communication is hard to achieve. However, because of the limited bandwidth and high latency, satellite communication is inadaptable for 4G service with high throughput and low latency. By solving the problem, methods including bandwidth allocation, TCP acceleration, header compression and Qo S are analyzed based on test results.