Dynamic multicast group management and service wavelength allocation method for communication-broadcasting convergence service in WDM-PON
US7583669B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 18, 2005 |
| Grant date | Sep 1, 2009 |
| Priority date | — |
| Expiry date | Sep 20, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2011/0069
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present provides a method of dynamically managing multicast groups and allocating multicast service wavelengths for the highest channel efficiency. According to the present invention, the share indices of wavelengths of all multicast service groups, which employ broadcasting wavelengths and data wavelengths, are periodically ascertained on the basis of IGMP snooping-based technology in a WDM-PON. Based on the ascertainment results, if the channel share index of the group that employs the broadcasting wavelength is smaller than the channel share index of the group that employs the data wavelength, the share index of the wavelength of the multicast group that employs the broadcasting wavelength is maximized by dynamically changing allocation of the wavelength of the multicast group, so that a maximum multicast service can be provided within limited resources.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.