Paper Info
Title
A nesting ranging algorithm for a Hybrid WDM/TDM PON with colorless Reflective-ONUs under different distances OLT-ONUs
Abstract
To reduce costs and cumbersome laser provisioning at the Optical Network Unit (ONU) user level in an access Passive Optical Network (PON), the use of a Reflective-ONU (R-ONU) is a good choice for up-data transmission. An optical carrier is sent by the Optical Line Terminal (OLT) at the Central Office, and a device at the ONU modulates the carrier with the upstream data. This allows all ONUs to be equal and colorless, without a light source in a Hybrid WDM/TDM architecture. A Dynamic Bandwidth Allocation is placed at the OLT, managing the lasers and photodetectors shared by all R-ONUs. The OLT laser and photodetector employed in an up-data transmission must be tuned for each ONU and a particular Round Trip Time (RTT), which is twice the propagation time from OLT to ONU. When an R-ONU is served by a laser, the photodetector must also be available after the RTT to demodulate the up-data. We propose a novel nesting ranging algorithm to deal with large different distances OLT–ONUs avoiding collisions and minimizing the delay under Priority Queuing with Quality of Service (QoS).
Year
DOI
Venue
2008
10.1007/s11107-008-0114-5
Photonic Network Communications
Keywords
Field
DocType
Passive Optical Network,Hybrid WDM/TDM,Reflective Optical Network Unit,Dynamic Bandwidth Allocation,Round Trip Time,Quality of Service
Wavelength-division multiplexing,Demodulation,Optical line termination,Computer science,Passive optical network,Computer network,Algorithm,Optical Carrier transmission rates,Upstream (networking),Dynamic bandwidth allocation,Round-trip delay time
Journal
Volume
Issue
ISSN
16
1
1572-8188(Series Online ISSN)1387-974X(Series Print ISSN)
Citations 
PageRank 
References 
0
0.34
2
Authors
3
Name
Order
Citations
PageRank
Josep Segarra142.71
Vicent Sales243.05
Josep Prat31612.37