Bandwidth allocation schemes for FTTH networks

Abstract

Thanks to fiber-to-the-home (FTTH) networks offering remarkably lower cost per Mbps for multimedia communications, it has been the potential solution for the future broadband access networks. With increase of bandwidth requirement nowadays, subscribers using xDSL are changing to adopt FTTH service at a high rate for bandwidth-rich applications, such as on-line games, video-on-demand, long-distance education, or other real-time streaming reception. There are several main FTTH infrastructures, all of which are based on passive optical networks (PON) or with active nodes. And it is attractive to adopt PON architectures because there is no power consumption between optical line terminal (OLT) and the optical network units (ONU). However, in the upstream direction (from ONUs to the OLT), all ONUs using the same photonic wavelength (share the same frequency channel) need a mechanism to coordinate their transmission. In order to speed up traffic flow and upgrade the quality of service in the connections, we propose a multi-homing scheme to bundle an association to end users. In the numerical results, it reveals that with the multi-streaming approach, not only the head-of-line blocking problem was resolved, but also better total network efficiency can be achieved