Method and apparatus for an arbitration scheme for radio frequency identification devices
US7639638B2 · kind B2 · utility
3Cited by
93References
87Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 2, 2006 |
| Grant date | Dec 29, 2009 |
| Priority date | — |
| Expiry date | Oct 15, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W74/08
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
RFID tags are identified. In one embodiment, RFID tags may be chosen to respond to an interrogator in accordance with an arbitration scheme. According to one arbitration scheme, each chosen tag may randomly pick a slot value. The interrogator may indicate that the number of slot values is to be adjusted. Each chosen tag may respond to the interrogator with a random number.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.