Mobile communication system
First Claim
1. A mobile communication system, comprising:
- a plurality of mobile stations and at least one base station, said mobile stations and said base station being radio-connected to each other using a multiple access system of a time-slot-shared and frequency-channel-shared type having a TDMA signal, and either a time-slot-shared and frequency-channel-shared time-divided CDMA signal, or a time-slot-shared time-divided CDMA signal, wherein at least some of said plurality of said mobile stations include a high-speed data transmitter that has a high-speed data transmission function and are radio-connected to said at least one base station with a high-speed data channel, and wherein said communication system includes a single communication channel between said base station and at least one high-speed data transmission function mobile station in said mobile communication system is constituted as an asymmetric channel using said high-speed data channel for high-speed data transmission, and using one of said TDMA signal, time-slot shared and frequency-channel-shared time-divided CDMA signal or time-slot-shared time-divided CDMA signal for communication signal transmission other than high-speed data transmission, such that an information quantity in a down-link from said base station to one of said high-speed data transmission function mobile stations, and an information quantity in an up-link from said one mobile station to said base station are different from each other.
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Accused Products
Abstract
In a mobile communication system in which a TDMA system and a time-divided CDMA system are commonly used, a high-speed TDMA data transmission system is introduced, and down-links, from base stations (1 to 3) to mobile stations (31 to 34, 41, 42, 51 and 52) and up-links, from mobile stations to base stations, comprise different communication capacities from each other and a couple of a down-link and an up-link having different communication capacities are handled as one communication channel (asymmetric channel). A mobile communication system which is to transmit a large quantity of high-speed data and is able to correspond to multimedia circumstances may be realized by assigning the above-mentioned asymmetric channel to the mobile communication system.
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Citations
43 Claims
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1. A mobile communication system, comprising:
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a plurality of mobile stations and at least one base station, said mobile stations and said base station being radio-connected to each other using a multiple access system of a time-slot-shared and frequency-channel-shared type having a TDMA signal, and either a time-slot-shared and frequency-channel-shared time-divided CDMA signal, or a time-slot-shared time-divided CDMA signal, wherein at least some of said plurality of said mobile stations include a high-speed data transmitter that has a high-speed data transmission function and are radio-connected to said at least one base station with a high-speed data channel, and wherein said communication system includes a single communication channel between said base station and at least one high-speed data transmission function mobile station in said mobile communication system is constituted as an asymmetric channel using said high-speed data channel for high-speed data transmission, and using one of said TDMA signal, time-slot shared and frequency-channel-shared time-divided CDMA signal or time-slot-shared time-divided CDMA signal for communication signal transmission other than high-speed data transmission, such that an information quantity in a down-link from said base station to one of said high-speed data transmission function mobile stations, and an information quantity in an up-link from said one mobile station to said base station are different from each other. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A mobile communication system, comprising:
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a plurality of mobile stations and at least one base station, said mobile stations and said base station being radio-connected to each other using a multiple access system of a time-slot-shared and frequency-channel-shared type having a TDMA signal, and either a time-slot-shared and frequency-channel-shared time-divided CDMA signal, or a time-slot-shared time-divided CDMA signal, wherein at least some of said plurality of said mobile stations include a high-speed data transmitter that has a function of high-speed data transmission and are radio-connected to said at least one base station with a high-speed data channel, wherein said system further comprises an asymmetric communication channel using said high-speed data channel for high-speed data transmission, and using one of said TDMA signal, time-slot shared and frequency-channel-shared time-divided CDMA signal or time-slot-shared time-divided CDMA signal for communication signal transmission other than high-speed data transmission, such that the information quantity in a down-link from said base station to at least one high-speed transmission function mobile station, and the information quantity in an up-link from said at least one high-speed transmission function mobile station to said base station are different from each other, and wherein when data transmission of a large information quantity is finished in either or both of said up-link and said down-link, the asymmetric communication channel is immediately switched over to a small quantity data transmission channel. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A mobile communication system, comprising:
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a plurality of mobile stations and at least one base station, said mobile stations and said base station being radio-connected to each other using a multiple access system of a time-slot-shared and frequency-channel-shared type having a TDMA signal, and either a time-slot-shared and frequency-channel-shared time-divided CDMA signal, or a time-slot-shared time-divided CDMA signal, wherein at least some of said plurality of said mobile stations include a high-speed data transmitter that has a high-speed data transmission function and are radio-connected to said at least one base station with a high-speed data channel, wherein said mobile communication system further comprises an asymmetric communication channel using said high-speed data channel for high-speed data transmission, and using one of said TDMA signal, time-slot shared and frequency-channel-shared time-divided CDMA signal or time-slot-shared time-divided CDMA signal for communication signal transmission other than high-speed data transmission, in which the information quantity in a down-link from said base station to at least one high-speed transmission function mobile station, and the information quantity in an up-link from said at least one high-speed transmission function mobile station to said base station are different from each other, and wherein said mobile communication system further comprises small capacity data transmission channels utilizing a multi-frame system which are independent of each other in said up-link and down-link respectively. - View Dependent Claims (16, 17, 18)
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19. A mobile communication system, comprising:
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a plurality of mobile stations and at least one base station, said mobile stations and said base station being radio-connected to each other using a multiple access system of a time-slot-shared and frequency-channel-shared type having a TDMA signal, and either a time-slot-shared and frequency-channel-shared time-divided CDMA signal, or a time-slot-shared time-divided CDMA signal, wherein at least some of said plurality of said mobile stations include a high-speed data transmitter that has a high-speed data transmission function and are radio-connected to said at least one base station with high-speed data channels, wherein said mobile communication system further comprises an asymmetric communication channel using said high-speed data channel for high-speed data transmission, and using one of said TDMA signal, time-slot shared and frequency-channel-shared time-divided CDMA signal or time-slot-shared time-divided CDMA signal for communication signal transmission other than high-speed data transmission, such that an information quantity in a down-link from said base station to at least one high-speed transmission function mobile station, and the information quantity in an up-link from said at least one high-speed transmission function mobile station to said base station are different from each other, and wherein a TDMA data channel is used as a high-speed data channel and a time slot in said TDMA data channel is composed of a plurality of micro time slots connected in series. - View Dependent Claims (20, 21, 22, 23)
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24. A mobile communication system, comprising:
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a plurality of mobile stations and at least one base station, said mobile stations and said base station being radio-connected to each other using a multiple access system of a time-slot-shared and frequency-channel-shared type having a TDMA signal, and either a time-slot-shared and frequency-channel-shared time-divided CDMA signal, or a time-slot-shared time-divided CDMA signal, wherein at least some of said plurality of said mobile stations include a high-speed data transmitter that has a high-speed data transmission function and are radio-connected to said at least one base station with a high-speed data channel, wherein said mobile communication system further comprises an asymmetric communication channel using said high-speed data channel for high-speed data transmission, and using one of said TDMA signal, time-slot shared and frequency-channel-shared time-divided CDMA signal or time-slot-shared time-divided CDMA signal for communication signal transmission other than high-speed data transmission, such that an information quantity in a down-link from said base station to at least one high-speed transmission function mobile station, and an information quantity in an up-link from said at least one mobile station to said base station are different from each other, and wherein said base station and said at least one mobile station are provided with switches respectively for selecting a communication system which is able to transmit a necessary information quantity in synchronization with time slots. - View Dependent Claims (25, 26)
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27. A mobile communication system, comprising:
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a plurality of mobile stations and at least one base station, said mobile stations and said base station being radio-connected to each other using a multiple access system of a time-slot-shared and frequency-channel-shared type having a TDMA signal, and either a time-slot-shared and frequency-channel-shared time-divided CDMA signal, or a time-slot-shared time-divided CDMA signal, wherein at least some of said plurality of said mobile stations include a high-speed data transmitter that has a high-speed data transmission function and are radio-connected to said at least one base station with a high-speed data channel, wherein said mobile communication system further comprises an asymmetric communication channel using said high-speed data channel for high-speed data transmission, and using one of said TDMA signal, time-slot shared and frequency-channel-shared time-divided CDMA signal or time-slot-shared time-divided CDMA signal for communication signal transmission other than high-speed data transmission, in which an information quantity in a down-link, from said base station to at least one high-speed transmission function mobile station, and an information quantity in an up-link, from said at least one mobile station to said base station, are different from each other, and a mobile switching center connected to said plurality of mobile stations, said mobile switching center being provided with a mobile station information memory for storing mobile information including the information showing the services to be provided to said mobile stations which are under the control of said mobile switching center. - View Dependent Claims (28, 29)
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30. A mobile communication system, comprising:
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a plurality of mobile stations and at least one base station, said mobile stations and said base station being radio-connected to each other using a multiple access system of a time-slot-shared and frequency-channel-shared type having a TDMA signal, and either a time-slot-shared and frequency-channel-shared time-divided CDMA signal, or a time-slot-shared time-divided CDMA signal, wherein at least some of said plurality of said mobile stations include a high-speed data transmitter that has a high-speed data transmission function and are radio-connected to said at least one base station with a high-speed data channel, wherein said mobile communication system further comprises an asymmetric communication channel using said high-speed data channel for high-speed data transmission, and using one of said TDMA signal, time-slot shared and frequency-channel-shared time-divided CDMA signal or time-slot-shared time-divided CDMA signal for communication signal transmission other than high-speed data transmission, in which an information quantity in a down-link, from said base station to at least one high-speed transmission function mobile station, and an information quantity in an up-link, from said at least one mobile station to said base station, are different from each other, and a mobile switching center connected to said base station, said mobile switching center being provided with a memory device for high-speed data communication to temporarily store the high-speed data transmitted to said at least one mobile station. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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41. A mobile communication system, comprising:
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a plurality of mobile stations and at least one base station, said mobile stations and said base station being radio-connected to each other using a multiple access system of a time-slot-shared and frequency-channel-shared type having a TDMA signal, and either a time-slot-shared and frequency-channel-shared time-divided CDMA signal, or a time-slot-shared time-divided CDMA signal, wherein at least some of said plurality of said mobile stations include a high-speed data transmitter that has a high-speed data transmission function and are radio-connected to said at least one base station with high-speed data channels, wherein said mobile communication system further comprises an asymmetric communication channel using said high-speed data channel for high-speed data transmission, and using one of said TDMA signal, time-slot shared and frequency-channel-shared time-divided CDMA signal or time-slot-shared time-divided CDMA signal for communication signal transmission other than high-speed data transmission, such that an information quantity in a down-link from said base station to at least one high-speed transmission function mobile station, and the information quantity in an up-link from said at least one high-speed transmission function mobile station to said base station are different from each other, a mobile switching center connected to said at least one base station, said mobile switching center being provided with a mobile station management memory for storing a communication channel management table to be used for the management of communication channels connecting said mobile switching center and respective mobile stations, and wherein said mobile switching center assigns a time slot corresponding to the transmission type and after the operation of assignment of the time slot corresponding to the present transmission type is finished, the assigning operation of the time slot is stored in said mobile station management memory as a history, and in a case that the same transmission type is requested again, the time slot having an actual use in the past existing in the history stored in said mobile station management memory is used. - View Dependent Claims (42, 43)
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Specification