Method for over-the-air synchronization adjustment in a communication system
AssigneeMotorola, Inc.
InventorsVictor M. Abreu, Raul A. Pombo, Paul D. Marko, David L. Brown
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Abstract
A method for synchronizing base stations (104, 106, 108, 110) or radio ports in a communication system (100) such as a cordless or cellular telephone system uses a mobile station (114) or handset for synchronizing unsynchronized base stations. The mobile station (114) is first synchronized to a reference base station. The mobile station (114) then initiates communication with the unsynchronized base station and calculates a synchronization adjustment. The mobile station (114) transmits the synchronization adjustment to the unsynchronized base station which uses the synchronization adjustment to adjust its time base.
Claims13
A method for synchronizing base stations in a communication system, the communication system including a plurality of base stations configured for radio communication with a mobile station, the method including the steps of:
- synchronizing the mobile station to a reference base station;
- and
- thereafter, synchronizing unsynchronized base stations of the plurality of base stations to the mobile station, thereby establishing synchronization between the unsynchronized base stations and the reference base station.
A method for over-the-air synchronization adjustment in a communication system, the communication system including a plurality of base stations and a mobile station, the method comprising the steps of:
- at the mobile station,
- synchronizing the mobile station to a reference base station;
- detecting an unsynchronized base station, the unsynchronized base station being different from the reference base station;
- calculating a synchronization adjustment for the unsynchronized base station;
- transmitting the synchronization adjustment from the mobile station to the unsynchronized base station;
- and
- at the unsynchronized base station,
- adjusting synchronization of the unsynchronized base station in response to the synchronization adjustment.
A method for synchronizing an unsynchronized base station in a communication system, the communication system including a plurality of base stations configured for radio communication with a mobile station, the plurality of base stations including a reference base station and the unsynchronized base station the unsynchronized base station being different from the reference base station, the method including the steps of:
- at the mobile station,
- detecting a synchronization transmission from the reference base station;
- synchronizing a time base of the mobile station in response to the synchronization transmission;
- detecting a synchronization transmission from the unsynchronized base station;
- calculating a synchronization adjustment for the unsynchronized base station;
- transmitting the synchronization adjustment to the unsynchronized base station;
- and
- at the unsynchronized base station,
- adjusting a time base of the unsynchronized base station in response to the synchronization adjustment to synchronize the unsynchronized base station.
Dependencies are inferred from the claim text.