Service Protection For Hybrid Optical-Wireless Broadband Access Network

Since the increase of the bandwidth consuming service, such as IPTV, the broadband access network is experiencing a fast-speed development. Meanwhile, the mature of both technologies of optical and wireless communication has led the trend of future access network. The combination of these two technologies will become the next generation access network. Compare with the traditional access technologies, hybrid optical-wireless broadband access network provides sufficient bandwidth resource, flat network control platform, better quality of service performance and novel service applications to meet users'requirements.The research on fixed and mobile convergence mainly focuses on equipment designing, signal modulation and coding, network architecture and planning, resource allocation scheme, service modeling, etc. However, few pays attention on the survivability of such kind network. In addition, how to regulate these wired and wireless resources in order to combine the advantages of the two technologies is an important concern.In this research, architecture of hybrid optical-wireless broadband access network and related resource management is studied to tackle the survivability problem. This research proposed the combination architecture of passive optical network and wireless access network, and wireless protection switching scheme to protect service in case of fiber failure. Besides, to guarantee the service performance without degradation, the dynamic bandwidth allocation scheme based on data traffic prediction and QoE modeling reference is introduced. At last, the proposed scheme is implemented in the experimental test-bed. In terms of proposed scheme, the data stream could re-transmit through wireless channel with 1 or 2 seconds when the last-drop optical fiber fails. The service could be restored, which could guarantee a high quality of service for end users.