Method and device for detecting a channel
US8730855B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2010 |
| Grant date | May 20, 2014 |
| Priority date | — |
| Expiry date | Jan 26, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W76/45
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for detecting a channel in a mixed-mode communications system is presented. The channel contains a primary synchronization pattern in a predetermined location within the channel. The primary synchronization pattern is compared against different predetermined channel synchronization patterns to detect a channel. Upon detection of the channel, a look-back channel detector confirms the existence of the channel by using the location of the primary synchronization pattern. Detection and confirmation of the channel may be employed simultaneously to each channel of a multiple-channel direct mode of operation signal. Audio holes may be eliminated in a 2:1 TDMA direct mode operation where both time slots contain signals from two different originating communication devices and the signals have different priority.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.