Interface with multilevel packet preemption based on balancing of start and end indicators
US7580426B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 28, 2006 |
| Grant date | Aug 25, 2009 |
| Priority date | — |
| Expiry date | Apr 12, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/6478
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Preemption techniques for use in conjunction with an interface between a physical layer device and a link layer device are disclosed. Segments associated with or comprising packets, cells or other protocol data units (PDUs) are communicated between the physical layer device and the link layer device via an interface bus. At least first and second consecutive start indicators having respective first and second data segments associated therewith are received by one of the devices from the other, and the second data segment is permitted to preempt the first data segment without signaling an interface protocol violation, subject to subsequent confirmation that the preemption is appropriate. If a number of consecutive end indicators is subsequently received that balances the number of consecutive start indicators, the preemption is confirmed as appropriate, and otherwise an interface protocol violation is signaled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.