Method of reliable multicasting
US7561599B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 2005 |
| Grant date | Jul 14, 2009 |
| Priority date | — |
| Expiry date | May 12, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/189
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for providing reliable multicasting is described. A transmitted multicast packet is received at second devices, each of which in response transmits a first acknowledgement. If a second acknowledgement, which acknowledges the first acknowledgement, is not received within a predetermined time period, the first acknowledgement is retransmitted. If all first acknowledgements are not received within a preset time period, the multicast packet is retransmitted. If the retransmitted multicast packet has been received, at each of the second devices, if the second acknowledgement has not been received the first acknowledgement is retransmitted, while if the second acknowledgement has been received, the retransmitted multicast packet is ignored and no additional first acknowledgement is transmitted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.