Mobile communication method and system
First Claim
1. A method for mobile communication between a base station and a plurality of mobile units by a code division multiple connection system including a plurality of fixed stations connected to a subscriber network in association with said plurality of mobile units, the method comprising the steps of:
- transmitting as a control channel from the plurality of fixes stations N periods of PN codes shorter in period than a pilot PN code transmitted from the base station, N being not less than 1, and identification information for identifying the plurality of fixed stations;
making or accepting a call via one of said plurality of fixed stations, if one of said plurality of fixed stations has been confirmed by one of said plurality of mobile units to be said one of said plurality of stations associated with said one of said plurality of mobile units, based on the identification information of a control channel received by said one of said plurality of fixed stations; and
making or accepting a call via said base station, if one of said plurality of fixed stations has not been confirmed to be said one of said plurality of stations associated with said one of said plurality of mobile units.
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Accused Products
Abstract
A mobile communication system in which a mobile unit of a mobile communication system operating under the CDMA system may be utilized indoors as a slave unit of the cordless telephone. The communication system operating under the CDMA system includes a plurality of fixed stations 3 connected to a subscriber network and designed to send a PN code shorter in period than a pilot PN code sent from a base station 1, and the identification information for the fixed stations 3, as a control channel, and a mobile unit 2 for receiving the identification information in the control channel received from the fixed station and for making or accepting a call via the fixed station 3 and via the base station 1 if the mobile unit 2 has identified the fixed station to be its own fixed station based on the identification information.
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Citations
22 Claims
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1. A method for mobile communication between a base station and a plurality of mobile units by a code division multiple connection system including a plurality of fixed stations connected to a subscriber network in association with said plurality of mobile units, the method comprising the steps of:
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transmitting as a control channel from the plurality of fixes stations N periods of PN codes shorter in period than a pilot PN code transmitted from the base station, N being not less than 1, and identification information for identifying the plurality of fixed stations; making or accepting a call via one of said plurality of fixed stations, if one of said plurality of fixed stations has been confirmed by one of said plurality of mobile units to be said one of said plurality of stations associated with said one of said plurality of mobile units, based on the identification information of a control channel received by said one of said plurality of fixed stations; and making or accepting a call via said base station, if one of said plurality of fixed stations has not been confirmed to be said one of said plurality of stations associated with said one of said plurality of mobile units. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A system for mobile transmission for having communication between a base station and a plurality of mobile units by a code division multiple connection system, comprising:
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a plurality of fixed stations for transmitting N periods of a PN code shorter in period than a pilot PN code transmitted from the base station, as a control channel, N being not less than 1, and for transmitting identification information for identifying the plurality of fixed stations, as a control channel, said plurality of fixed stations being associated with said plurality of mobile units and being connected to a subscriber network; and a plurality of mobile units which, if one of said plurality of fixed stations has been confirmed by one of said plurality of mobile units to be said one of said plurality of fixed stations associated with said one of said plurality of mobile units, based on the identification information of the control channel received by said one of said plurality of fixed stations, makes or accepts a call via said one of said plurality of fixed stations and, if otherwise, makes or accepts a call via said base station. - View Dependent Claims (8, 9, 10, 11, 12)
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13. An apparatus in a mobile communication system designed for having communication between a base station and a plurality of mobile units by a code division multiple connection system, said apparatus having radio communication with said mobile unit, comprising:
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PN code generating means for generating a PN code shorter in period than a pilot PN code transmitted from the base station; identification information generating means for generating identification information for identifying a plurality of fixed stations; and control channel transmitting means for transmitting N periods of the PN code from said PN code generating means, N being not less than 1, and the identification information from said identification information generating means, as a control channel. - View Dependent Claims (14, 15, 16)
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17. An apparatus in a mobile communication system in which communication is established between a base station and a plurality of the mobile units by a code division multiple connection system, comprising:
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reception means for receiving a paging channel from said base station and for receiving N periods, N being not less than 1, of PN codes shorter in period than a pilot PN code, and identification information for identifying a plurality of fixed stations associated with the plurality of mobile units as a control channel; PN code detection means for detecting the PN codes of the control channel received by said reception means; demodulation means for demodulating the identification information of said control channel based on a result of detection of said PN code detection means; and control means managing control for making a call or accepting a call via one of said plurality of fixed stations if said one of said plurality of fixed stations has been confirmed by one of said plurality of mobile units to be said one of said plurality of fixed stations associated with said one of said plurality of mobile units based on the identification information from the demodulation means, said control means managing control for making or accepting a call via said base station otherwise. - View Dependent Claims (18, 19, 20, 21, 22)
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Specification