Method and system for upstream bandwidth allocation in a passive optical network
US8934772B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 5, 2010 |
| Grant date | Jan 13, 2015 |
| Priority date | — |
| Expiry date | Jun 28, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2011/0081
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method for upstream bandwidth allocation in a passive optical network is provided by the disclosure. The method includes the following steps: an Optical Line Terminal (OLT) allocates an upstream bandwidth for an Optical Network Unit (ONU) through an upstream bandwidth mapping (US BWmap) domain, wherein the total length B of payloads transmitted by consecutive Transmission Containers (T-CONTs) allocated for the ONU is: the product of the positive integer n and the data byte length L contained in a code word when the ONU uses Forward Error Correction (FEC) encoding, minus the byte length R of the contents protected by FEC, except the payloads, in an upstream burst slot transmitted by the ONU, i.e. B=L×n−R bytes (401); and the ONU encapsulates the upstream data according to the size of the T-CONT total bandwidth allocated by the OLT and transmits it to the OLT (402). A system for upstream bandwidth allocation in a passive optical network is also provided by the disclosure. Application of the disclosure reduces the complexity of processing FEC-encoded data by the ONU and the OLT, and improves the encoding efficiency of the ONU and the decoding efficiency of the OLT.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.