Accessory interface within a multiple channel radio apparatus
US6775558B1 · kind B1 · utility
36Cited by
24References
37Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 10, 1999 |
| Grant date | Aug 10, 2004 |
| Priority date | — |
| Expiry date | Nov 10, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W92/04
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
For establishing a local communication connection between a terminal (102) of a cellular radio system and an accessory device (103), a radio channel is identified (301, 302) on which there is no perceivable radio traffic in the cellular radio system, and a communication connection is established (303, 501) between the terminal and the accessory device on the identified radio channel. The radio channel is preferably a code channel of a CDMA system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.