
Taking Turns with Adaptive Cycle Time
Decentralized Media Access for Long-Reach Passive Optical Networks
Ahmed Helmy(Author)
LAP Lambert Academic Publishing
Published on 26. July 2012
Book
Paperback/Softback
168 pages
978-3-659-16438-5 (ISBN)
Description
The extended network spans of next generation long-reach passive optical networks (LR-PONs) result in extremely long propagation delays that severely degrade the performance of currently adopted upstream bandwidth-allocation algorithms. This is because these algorithms are based on bandwidth negotiation messages, frequently exchanged between the central office and distant network units, which become seriously delayed when the network is possibly extended to hundreds of kilometers. This book addresses this problem by proposing decentralized media access for these emerging networks, allowing the network units to communicate with each other and take turns accessing the upstream channel. This makes the upstream bandwidth-allocation performance independent of the network reach and enables sooner transmission of upstream packets. The book also reviews some of the major contributions in this field, and studies many challenges facing the decentralized scheme. Through extensive simulation, the performance of the decentralized scheme is evaluated in contrast with centralized schemes. In addition, various improvement approaches are explored and further research points are highlighted.
More details
Language
English
Place of publication
Germany
Product notice
Paperback (trade)
Unsewn / adhesive bound
Dimensions
Height: 220 mm
Width: 150 mm
Thickness: 11 mm
Weight
268 gr
ISBN-13
978-3-659-16438-5 (9783659164385)
Copyright in bibliographic data and cover images is held by Nielsen Book Services Limited or by the publishers or by their respective licensors: all rights reserved.
Schweitzer Classification
Person
Ahmed H. Helmy received his B.Sc. in electrical engineering from BHIT, Egypt, in 2005, and his M.Sc. from KSU, Saudi Arabia, in 2012. As an assistant researcher, he participated in projects on next generation networks & systems. Currently, he has returned to the industry, working in research & development and in market & technology research.