基于软件定义网络(SDN)的电力光纤到户带宽分配技术

Dynamic Bandwidth Allocation for Power Fiber to the Home Based on SDN

以太无源光网络(Ethernet passive optical network,EPON)技术是实现电力光纤到户(power fiber to the home,PFTTH)组网的重要手段,与EPON在光纤系统中的广泛应用不同,电力光纤到户系统不仅需要为用户提供语音、数据和视频等互联网业务服务,还需承载用户的电力类业务。文章详细分析了终端用户的业务需求,并针对电力类业务和互联网业务提出了相对应的分级策略。同时,针对传统EPON系统带宽分配机制不灵活等问题,提出了基于软件定义网络(software defined network,SDN)的EPON系统架构,并结合该架构,提出了以电力类业务为主、以互联网类业务为辅的动态带宽分配策略,从而满足了用户的业务需求,增强了系统的灵活性和可管理性。

The Ethernet passive optical network（ EPON） technology is an important networking means to realize the power fiber to the home（ PFTTH）. The EPON technology has been widely used in the power fiber to the home,which provides services for user＇s traditional Internet services including voice,video and data traffic. Unlike the traditional application of EPON in fiber to the home,the PFTTH system needs to carry power service and Internet service. This paper describes the service requirements of the user in the PFTTH system and proposes the corresponding classification strategy for power service and Internet service. At the same time,according to the inherent flexibility issues of bandwidth allocation in traditional EPON system,we put forward a new software defined network（ SDN） based PFTTH system architecture. Combined with this architecture,we realize the dynamic bandwidth allocation strategy,which takes the power service primarily and the Internet service secondary. In this way,we can meet the user＇s business needs and improve the system＇s flexibility and management.