Radio communication system, base station, inter-base station synchronization method, and program
US8254369B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 20, 2009 |
| Grant date | Aug 28, 2012 |
| Priority date | — |
| Expiry date | Apr 30, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W56/006
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A radio communication system includes a terminal and base stations that transmit subframes to and receive subframes from said terminal by means of OFDMA/TDD. The base stations include a first base station and a second base station that is adjacent to the first base station and that establishes frame synchronization with the first base station. The second base station: receives a specific uplink signal contained in an uplink subframe that is transmitted to the first base station from the terminal that is located at the cell boundary of the first base station and the second base station; based on the timing of the reception of the specific uplink signal, estimates the timing of the transmission of the header of uplink subframes transmitted from the terminal; and based on the timing of the transmission of the header of the uplink subframes that was estimated, controls the timing of the transmission of downlink subframes that are transmitted to the terminal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.