This paper provided various schemes for enhancing preference of the existing sharing networks,and discussed distinguish between the two connection mode of HDX and FDX while them running.

• 本文对已建立的共享网络；提出了多种改造和性能提升方案；还研究了半双工(HDX)和全双工(FDX)二种连接方式在运行上的差别；并且讨论了在什么情况下去选择哪种方式的连接.