Method for multicast service in a crossbar switch
US7461167B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 20, 2003 |
| Grant date | Dec 2, 2008 |
| Priority date | — |
| Expiry date | Oct 24, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L49/3063
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method efficiently multicasts data within a crossbar switch based structure. Multicasting is achieved with effective prioritization of multicast data with respect to unicast data and other multicast data, yet does not unnecessarily delay unicast traffic. The method for multicast service in a crossbar switch effectuates the transfer of data between a single input queue and a multiplicity of output ports and reconfigures the crossbar switch accordingly. A primacy is assigned to data cells based upon their designation as multicast cells that hightens their service priority with respect to cells that are to be unicasted. To prioritize multicast cells for service with respect to other multicast cells, a comparison of assigned priorities is made. While multicast cells have priority in one embodiment over unicast cells, unicast cells can be transferred during multicast iterations during pauses in multicast data transfer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.