Mobile communication systems
US7502596B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 2002 |
| Grant date | Mar 10, 2009 |
| Priority date | — |
| Expiry date | Apr 2, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W72/563
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A mobile communication system includes a base station connected to a backbone network, and a mobile station configured to communicate with the base station using a radio frequency. The system has a first communication mode, in which a first radio frequency is used for an uplink and a second radio frequency is used for a downlink; a second communication mode, in which the first radio frequency is used for the uplink, and the second radio frequency is shared by the uplink and the downlink; a third communication mode, in which the second radio frequency is used for the downlink, and the first radio frequency is shared by the uplink and the downlink; and a mode switcher configured to switch the first through third communication modes in accordance with data transfer volumes on the uplink and the downlink.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.