Digital mobile communication system capable of establishing mutual synchronization among a plurality of radio base stations
US5912886A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 7, 1997 |
| Grant date | Jun 15, 1999 |
| Priority date | — |
| Expiry date | Feb 7, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J3/0682
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A mobile communication system is capable of establishing mutual synchronization of radio communication channels among a plurality of radio base stations. A synchronization timing control center is included in a wired telephone network as a terminal equipment of the wired telephone network. Each radio base station in the mobile communication network makes a connection to the synchronization timing control center by way of a mobile switching center, for establishing frame synchronization. Each radio base station measures a value of transmission delay between the radio base station and the synchronization timing control center, and then receives a frame signal as a reference signal from the synchronization timing control center. The formal frame signal to be used by each radio base station is reproduced by compensating the received frame signal by the transmission delay value which varies for each radio base station. Once the frame signal has been established, the signal is held by the clock timing of the network synchronization circuit in each radio base station.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.