Mobile communication system and method of controlling synchronization between base stations
First Claim
1. A mobile communication system comprising a plurality of base stations which are located at appropriate positions within a predetermined area and conduct radio communications with a mobile communication terminal, and an exchange office which is connected with said base stations and conducts the exchange control toward an external network, said exchange office conducting a Time Division Multiplex radio communication by providing a synchronizing signal from said exchange office to each of said base stations, said system further comprising, delay time detection means for detecting an arrival delay time of said synchronizing signal to each of said base stations;
- computation means for computing a timing correction value which synchronizes a radio communication timing of all of said base stations for each base station on the basis of a delay time detected; and
correction means for correcting said synchronizing signal supplied to said base stations according to said timing correction value.
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Accused Products
Abstract
A mobile communication system has a plurality of base stations which are located at appropriate positions within a predetermined area and conduct radio communication with a mobile communication terminal, and an exchange office which is connected with the base stations and conducts the exchange control toward an external network, and which offers a Time Division Multiplex radio communications by supplying a synchronizing signal to each of the base stations. The system further has delay time detection means for detecting an arrival delay time of the synchronizing signal to each of the base stations, computation means for computing a timing correction value which synchronizes a radio communication timing of all of the base stations for each base station on the basis of a delay time detected, and correction means for correcting the synchronizing signal supplied to the base stations according to the timing correction value.
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Citations
13 Claims
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1. A mobile communication system comprising a plurality of base stations which are located at appropriate positions within a predetermined area and conduct radio communications with a mobile communication terminal, and an exchange office which is connected with said base stations and conducts the exchange control toward an external network, said exchange office conducting a Time Division Multiplex radio communication by providing a synchronizing signal from said exchange office to each of said base stations,
said system further comprising, delay time detection means for detecting an arrival delay time of said synchronizing signal to each of said base stations; -
computation means for computing a timing correction value which synchronizes a radio communication timing of all of said base stations for each base station on the basis of a delay time detected; and
correction means for correcting said synchronizing signal supplied to said base stations according to said timing correction value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of controlling synchronization between base stations in a mobile communication system comprising a plurality of base stations which are located at appropriate positions within a predetermined area and conduct radio communications with a mobile communication terminal, and an exchange office which is connected with said base stations and conducts the exchange control toward an external network, said exchange office conducting a Time Division Multiplex radio communication by providing a synchronizing signal from said exchange office to each of said base stations,
said method comprising the steps of: -
detecting an arrival delay time of said synchronizing signal to each of said base stations;
computing a timing correction value which synchronizes timing of radio communication of all the base stations on the basis of delay time detected for each of said base stations; and
correcting said synchronizing signal supplied to said base station according to said timing correction value.
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Specification