Multimedia and multiservice calls in mobile network
US6678527B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 7, 2000 |
| Grant date | Jan 13, 2004 |
| Priority date | — |
| Expiry date | Aug 7, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W92/18
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
One common traffic channel is allocated to a multiservice call which requires simultaneous transmission of two or more different information flows apart from one another. This common traffic channel is divided into a transparent and a non-transparent sub-channel. The transmitting end is provided with a multiplexer (73) which multiplexes the different information flows (75, 76) to the common traffic channel. The receiving end is provided with a demultiplexer (74) which demultiplexes the signal received from the common traffic channel back into separate information flows (75, 76). The transparent sub-channel is used for transmitting time-critical information, such as video and audio, which does not allow the use of an error correction protocol based on retransmission, and the non-transparent sub-channel can be used for transmitting less time-critical information, such as data files, which allows the use of error correction based on retransmission.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.