Multiple devices communicating on a single communication channel with a consecutively sequenced signal
US8000385B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 14, 2008 |
| Grant date | Aug 16, 2011 |
| Priority date | — |
| Expiry date | Feb 15, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W28/06
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention provides apparatuses, methods, and computer readable media for supporting communications for a plurality of transmitter-receiver pairs on a common frequency spectrum. A transmitting device transmits a consecutively sequenced signal sequentially containing messages to a corresponding receiving device. A duty cycle adjustment circuit determines the duration between adjacent messages so that the consecutively sequenced signal is characterized by a randomized duty cycle. The duty cycle adjustment circuit selects the duration from a sequence that is characterized by an average duration. The duty cycle adjustment circuit obtains the duration from an array by determining an index from a function of a random variable. A receiving device receives a consecutively sequenced signal sequentially containing messages from a transmitting device, where the consecutively sequenced signal is characterized by a randomized duty cycle. A processing circuit detects the messages and initiates an error signal when a predetermined number of consecutive invalid messages are detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.