Random access communication method by CDMA and mobile station equipment using the same
US5581547A · kind A · utility
56Cited by
10References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 25, 1994 |
| Grant date | Dec 3, 1996 |
| Priority date | — |
| Expiry date | Oct 25, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2201/709709
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Mobile stations randomly set delay amounts for each message to be sent, on the basis of the timing of a symbol received from a base station, and delay transmission signals for time intervals corresponding to the delay amounts. The base station 11 despreads signals received from the mobile stations to extract basic symbol timing for each mobile station and, at the thus extracted timing, takes each despread output into the corresponding demodulator for demodulation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.