Blocking communication between rogue devices on wireless local access networks (WLANS)
US9351166B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 25, 2012 |
| Grant date | May 24, 2016 |
| Priority date | — |
| Expiry date | Feb 7, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W12/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Techniques which prevent rogue devices from continued access to a wireless communication system. A control element directs access points as to which mobile stations to service. Each access point maintains a record of the mobile stations it is servicing. At the direction of the control element, one or more access points send ACK (acknowledgement) messages when hearing messages from a rogue device. When the rogue device sends a message, it expects an ACK message in response, but those additional ACK messages interfere with the responsive ACK message, causing the rogue device to never hear the responsive ACK message. The rogue device assumes its message was not received, so it retries sending of that message. When the rogue device retries sending of its message, the responsive ACK message is similarly interfered with, until the rogue device concludes that its connection has been lost.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.