Wavelength-agile and radio-agile FiWi access network using dynamic scheduling to improve upstream delay and resource utilization

Abstract

Fiber wireless (FiWi) access network which is also referred as hybrid wireless optical broadband access network is one of the modern architecture to solve the problem of bandwidth availability and flexibility simultaneously. It integrates wireless frontend with optical backend. In FiWi network most of component remains idle for large duration, hence efficiency is very crucial. To improve energy efficiency in FiWi many multiple access (MA) techniques had been implemented at backend. However inclusion of multiple access techniques usually incur problem of delay, as data transfer in such network takes place only in the assigned slot of access technique. In this paper a novel architecture is proposed for FiWi which implements wavelength agile hybrid multiple access at backend and radio agile access technique at frontend. Further to improve delay performance, bandwidth availability and utilization of resources; a new scheduling approach is proposed for multiple access techniques implemented at frontend as well as backend. Delay performance, wavelength availability and load handling capacity of proposed approach is compared with different hybrid multiple access architecture. To best of our knowledge, wavelength agile and radio agile MA has been used for the first time in FiWi, moreover the proposed scheduling approach implemented on MA provide promising results in terms of delay and resource utilization. The performance of proposed work is also evaluated in terms of service and reservation delay component to indicate its utility in terms of actual information content per frame. The result shows effectiveness of proposed architecture over other existing architectures.

CSAT‐FRMET: An energy‐efficient hybrid FiWi network‐based 5G model

“…Mishra et al 26 presented that employs wavelength agile hybrid multiple access at the backend and radio agile access at the frontend. To increase delay performance, bandwidth availability, and resource usage, a new scheduling approach for various access approaches applied at both the front end and back end is provided.…”

“…From the analysis, it is noted that 19 has an ECMCC problem and the worst‐case playback delay has occurred in Reference 20. Reference21 reduce throughput, and reduce network performance, 3 not work on joint energy resource allocation, 22 rely on the offloading option, 23 do not take into account the diverse user, 24 not support the selective retransmission and 25 must focus on energy‐efficient EC mechanism designs, 26 must enhance latency calculations, 27 energy efficiency is reduced due to low precision in References 28,29 sensing probability must be improved.…”