软件定义的光接入设备中软硬件通信接口设计与实现.doc

文档介绍：
软件定义的光接入设备中软硬件通信接口
设计与实现
马晓宁,乔耀军,顾仁涛**
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(北京邮电大学信息与通信工程学院)
摘要:随着科技的进步,新技术革命深刻地影响着传统的电信体系。新的电信业务层出不穷,
网络流量呈现爆炸式增长,用户对于视频等业务质量要求也越来越高,以上都对传统的接入
网提出诸多挑战。把软件定义技术引入光接入网络架构,是未来发展方向,能够解决当前接
入网面临的诸多问题。在本研究提出的软件定义的光接入网中,接入设备需要实现转发功能,
并为控制平面提供接口 API。转发硬件部分由 FPGA 实现,软件部分由嵌入式系统提供,因
此,嵌入式系统与硬件之间的通信接口需要进行相应的设计,保证两者之间的消息传递,如
流表条目的下发等,顺利完成。本研究通过分析通信需求,设计了设备中嵌入式系统与 FPGA
进行通信所需的硬件接口以及软件通信流程,并对其进行了测试验证。
关键词:通信网设备;SDN;嵌入式;接口;
中图分类号:
A Design and Realization munication Interface
between Software and Hardware in Software Defined
Optical Access Devices
Ma Xiaoning, Qiao Yaojun, Gu Rentao
(School of Information munication Engineering, Beijing University of Posts and
munications)
Abstract: With the development of technology, the new technology revolution has a profound
impact on the traditional system. While new munication services are developing
rapidly, huge traffic is increasing fastly and user demand for service quality is higher and higher,
traditional works are facing great challenges. One promising solution to solve current
problems is to introduce software defined technology into work architecture. In the
proposed software defined works, it should be able to implement forwarding function
and provide API interface for control platform. While hardware module is implemented by FPGA,
the software module runs on an embedded system.