VMP: A MAC Protocol for EPON-Based Video-Dominated FiWi Access Networks

Abstract

Abstract-Optical and wireless network technologies are expected to converge in the near to midterm, giving rise to bimodal fiber-wireless (FiWi) broadband access networks. In triple-play (voice, video, and data) service scenarios for such FiWi access networks, video traffic will likely dominate due to the widely predicted increase in video network services and the high traffic volume of compressed video compared to voice and data services. In this paper, we introduce and evaluate a comprehensive video MAC protocol (VMP) to efficiently deliver prerecorded video downstream to wireless consumers over a FiWi network in the presence of voice and data upstream and downstream traffic. VMP consists of three main novel components: (i) frame fragmentation in conjunction with hierarchical frame aggregation for efficient MAC frame transport over the integrated optical and wireless network segments, (ii) multi-polling medium access control for upstream voice and data packets and acknowledgements for downstream video packets, and (iii) prefetching of video frames over the optical and wireless network segments in conjunction with hybrid reservation/contention-based medium access. Our simulation results indicate that VMP achieves significant improvements in throughput-delay performance for all three traffic types as well as reductions in the playback starvation probability for video traffic compared to existing state-of-the-art MAC mechanisms.Index Terms-EPON, FiWi, H.264 SVC, MAC layer protocol, prefetching, video streaming, wireless mesh network.

QoS‐aware cross‐domain collaborative energy‐saving mechanism for FiWi virtual networks

“…This paper considers three different types of services with typical characteristics of the access network, namely EF‐level, AF‐level, and BE‐level services, as follows: Expedited Forwarding (EF): The EF service has high‐reliability requirements and is sensitive to delays, such as remote control and protection services. Assured Forwarding (AF): The AF service has high‐bandwidth requirements, high‐latency requirements, and low‐reliability requirements, such as streaming video and video surveillance services. Best Effort (BE): The BE service has high‐reliability requirements, low latency requirements, and low‐bandwidth requirements, such as smart meter reading services. …”

“…This paper considers three different types of services with typical characteristics of the access network, namely EF-level, AF-level, and BE-level services, 26,27 as follows:…”

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“…Fig. 1 [16] and mesh networks [17]- [18]. The authors have recently presented a first approach regarding the convergence of PONs with newly introduced 60GHz wireless networks by studying the GPON/802.11ad integration [19].…”

Transmission priority scheme with adaptive backoff technique in fiber-wireless networks

“…Fiber-wireless (Fi-Wi) networks combine the capacity of optical fiber networks with the ubiquity and mobility of wireless networks [1][2][3][4][5][6][7]. The use of energy-efficient and stable passive optical splitters makes them the favored choice among other fiber-to-the-home (FTTH) technologies.…”