Telecommunications – Transmitter and receiver at separate stations – Plural transmitters or receivers
Reexamination Certificate
1999-08-20
2001-08-07
Trost, William (Department: 2683)
Telecommunications
Transmitter and receiver at separate stations
Plural transmitters or receivers
C455S062000, C455S063300, C455S423000, C375S132000, C375S224000, C375S225000
Reexamination Certificate
active
06272353
ABSTRACT:
TECHNICAL FIELD OF THE INVENTION
This invention relates generally to wireless communications and more particularly to a method and system for mobile communications.
BACKGROUND OF THE INVENTION
In conventional mobile systems there is generally a single base station supporting a plurality of mobile units or hand sets. The base station in such systems acts as the master with all of the mobile units acting as slaves. The master base station controls and selects the transmission attributes for establishing the communication links with each of the mobile units. A function of the base station master controller is to optimize the communication link with the mobile units. It is known to optimize the communication link between the base station and the mobile units by monitoring and evaluating parameters relating to the quality of the transmission characteristics for the entire system. Those parameters that optimize the quality of the communication link for the system are then selected and used whenever the base station communicates with one or more of the mobile units. As each of the mobile units is free to move about the area serviced by the base station, a problem arises when different ones of the mobile units encounter different interference problems affecting the quality of the communication link with the base station controller. In those circumstances, one mobile unit may enjoy a high quality communication link with the base station while another mobile unit may not be able to communicate at all. This problem frustates users and has been a long standing challenge to the developers of mobile communication devices.
Therefore, a need has arisen for a new method and system for mobile communications that overcomes the disadvantages and deficiencies of the prior art.
SUMMARY OF THE INVENTION
In accordance with the present invention, a method and system for mobile communications is disclosed that provides for improved transmission quality for individual communication links between a base station and its mobile units.
In one embodiment of the present invention, a method is disclosed for mobile communications comprising three steps. In step one, parameters representative of transmission quality for individual communication links between a base station and each of the plurality of mobile units are monitored. In step two, the parameters for each of the individual communication links are evaluated to determine the optimum quality of each link. In step three, transmission attributes are selected in response to the evaluated parameters to optimize the transmission quality of each link.
In another embodiment of the present invention, a system for mobile communications is disclosed. The system comprises a base station having logic for evaluating parameters relating to the quality of individual communication links between the base station and each of the plurality of mobile units and selecting those parameters that optimize the quality of the communication link for each individual mobile unit The system also comprises circuitry residing in each mobile unit for establishing an optimized communication link with the base station.
A technical advantage of the present invention is the ability to evaluate automatically the quality of individual communication links between the base station and a plurality of mobile units. The base station may then select transmission attributes to optimize the transmission quality of each individual communication link.
Other technical advantages should be apparent to one or ordinary skill in the art in view of the specification, drawings, and claims.
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Copy of Search Report for PCT appln. No. PCT/US 00/16694; date search was mailed: Oct. 27, 2000.
Dicker Olaf
Kockmann Juergen
Sydon Uwe
Milord Marceau
Siemens Information and Communication Mobile LLC.
Trost William
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