Data transmission method, data transmission system, and cellular radio system
US6092222A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 13, 1996 |
| Grant date | Jul 18, 2000 |
| Priority date | — |
| Expiry date | Aug 13, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W72/00
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A data transmission method in a system employing information channels having at least two different capacities, on which channels speech is transmitted by at least two different coding techniques in such a manner that on a channel having a higher capacity, fewer symbols to be transmitted are coded from the same speech signal block than on a channel having a lower capacity, includes speech coding, channel coding, dividing the speech signal block, combining parts, adding error correction symbols, adding rail symbols, and convolution coding. It is also possible that the convolution-coded symbols are transmitted as interleaved or that the channel-coded signal is transmitted over the full rate channel. As a result of this method, the cell size of a radio telephone system and thus, the coverage area of the system, is extended without large changes in equipment or without an increase in transmission power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.