异构网络制式下的3G点对点远程数据传输

Point-to-point 3G Remote Data Transmission Under Heterogeneous Network Standard

通过研究现有远程通信技术的局限性,根据构建稳健远程数据传输系统的实际需求,集成3G通信技术和北斗短报文通信技术,提出一种可靠的远程数据传输方法。在3G网络覆盖的区域,采用3G技术进行远程数据传输。在3G网络无法覆盖的区域或3G通信基站被干扰破坏的区域,采用北斗短报文通信进行数据传输。由于在WCDMA和TD-SCDMA制式下,无法实现设备间的点对点通信,因此,通过建立数据中转服务器进行存储转发,为3G发送方和接收方提供实时与非实时2种通信方式,实现异构网络制式下的点对点通信。同时,针对北斗短报文通信的不可靠传输,提出一种基于反馈的丢包重发机制来提高北斗短报文传输的可靠性。采用SBC8600嵌入式开发板以及Linux操作系统构建通信平台进行通信实验,结果验证了该方法的合理性以及传输数据的可靠性。

By studying the research of the limitations of existing telecommunication technology,based on the real need of constructing moderate remote data transmission system, this paper presents a new transmission strategy which combines 3G communication with BeiDou short-message communication. In the area of 3G network, it adopts 3G technology to transfer data,otherwise, it adopts BeiDou short-message communication. When the user equipment of 3G transmission under the standard of WCDMA or TD-SCDMA,point to point communication can＇ t be realized in 3G wireless network. Given that, this paper utilizes a data transfer server for storing and forwarding, supporting real-time mode and non-real- time mode, therefore, 3G device-to-device communication under heterogeneous network standard can be achieved. Meanwhile,aimed at the unreliable transmission of BeiDou short-message communication, this paper designs a message retransmission mechanism to increase the robustness of communication. Finally,it uses SBC8600 embedded development board and Linux operating system to build experimental platform, analysis result shows that this method is reasonable and data transmission is reliable.