BROWSE
Detail
Journal Article
Two-Stage Resource Allocation to Improve Utilization of Synchronous OFDM-PON Supporting Service Differentiation
- Authors
- Kyeong-Hwan Doo, Junseong Bang, Man Soo Han, Jonghyun Lee, Sangsoo Lee
- Issue Date
- 2015-08
- Citation
- ETRI Journal, v.37, no.4, pp.657-666
- ISSN
- 1225-6463
- Publisher
- 한국전자통신연구원 (ETRI)
- Language
- English
- Type
- Journal Article
- Abstract
- We propose a two-stage resource allocation algorithm for the high link utilization of an orthogonal frequencydivision multiplexing passive optical network (OFDMPON). An OFDM-PON is assumed to use a synchronous frame structure in supporting service differentiation. In distributing resources, the proposed algorithm first allocates a time window for each optical network unit (ONU), and then it arranges a subchannel, which is a group of subcarriers. This algorithm needs to satisfy two constraints. First, computations for the resource allocation should be done using a frame unit. Second, an ONU has to use a single subchannel to send upstream data for multiple services within a frame duration. We show through a computer simulation that the proposed algorithm improves the link utilization.
- KSP Keywords
- Computer simulation(MC and MD), Frame duration, Frame structure, OFDM-PON, Optical network unit(ONU), Orthogonal frequency division Multiplexing(OFDM), Passive optical network, Resource allocation algorithm, Service differentiation, Show through, Synchronous frame