System and method for network connection detection
US7626937B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2003 |
| Grant date | Dec 1, 2009 |
| Priority date | — |
| Expiry date | Jul 13, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/00
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention provides a system and method that operates in the link layer and detects connection status in a LAN. The system includes a request frame whose source address is an address of a node transmitting the request frame, a reply frame whose destination address is the source address of the request frame, and a first node and a second node within the LAN for processing the request/reply frame. The method includes the first node transmitting a request frame into the LAN, the second node transmitting a reply frame to the first node if receiving the request frame, and the first node checking whether a destination address of the reply frame comprises an address of the first node when receiving the reply frame. If so, the connection between the first and second nodes is in a normal state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.