Method for polling in a medium access control protocol
US7548552B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2005 |
| Grant date | Jun 16, 2009 |
| Priority date | — |
| Expiry date | Mar 30, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/403
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method is provided for a master device (601) to allocate channel time. The master device sends a polling frame (240) to a current destination slave device (602) and a current polled slave device (603). The polling frame includes a current destination slave device address (350), a current polled slave device address (360), and a current payload (330). The master device receives a poll acknowledgement frame (280) if the current polled slave device does not wish to transmit data. However, if no poll acknowledgement frame is received, the master device waits for a set duration then sets the current destination device address to be equal to a new destination device address, sets the current polled device address to be equal to a new polled slave device address, and sets a current payload to be equal to a new payload. This can be repeated until a channel time allocation ends.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.