Mobile station used as a repeater station when communicating with a base station
First Claim
1. A mobile station used as a repeater station when a mobile station communicates with a base station by way of at least one other mobile station in an Opportunity Driven Multiple Access (ODMA) scheme, said mobile station comprising:
- determining means for determining whether data demodulated after being received is reception data for said mobile station or transfer data to be transferred to the other mobile station or the base station;
adding means for adding transmission data to said transfer data and outputting thus obtained sum data if said transmission data is generated in the mobile station, and outputting said transfer data alone if there is no transmission data;
deciding means for deciding a modulation mode suitable for transmitting data outputted from said adding means according to an amount of said data; and
modulating means for modulating said data outputted from said adding means according to said modulation mode decided by said deciding means.
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Accused Products
Abstract
When a mobile station communicates with a base station by way of one or a plurality of other mobile stations, the mobile station acting as a relay station determines whether the data demodulated after being received is reception data for the mobile station or transfer data to be transmitted to the other mobile station or the base station, decides a modulation mode suitable for transmitting sum data of the transfer data and transmission data if the transmission data is generated in the mobile station, and transmits the sum data while modulating the sum data according to the modulation mode decided. The base station demodulates a reception signal relayed by the mobile stations according to the modulation mode of the mobile station having directly communicated with the base station, and identifies each user data multiplexed.
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Citations
11 Claims
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1. A mobile station used as a repeater station when a mobile station communicates with a base station by way of at least one other mobile station in an Opportunity Driven Multiple Access (ODMA) scheme, said mobile station comprising:
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determining means for determining whether data demodulated after being received is reception data for said mobile station or transfer data to be transferred to the other mobile station or the base station; adding means for adding transmission data to said transfer data and outputting thus obtained sum data if said transmission data is generated in the mobile station, and outputting said transfer data alone if there is no transmission data; deciding means for deciding a modulation mode suitable for transmitting data outputted from said adding means according to an amount of said data; and modulating means for modulating said data outputted from said adding means according to said modulation mode decided by said deciding means. - View Dependent Claims (2, 3, 4)
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5. A mobile communication system employing an Opportunity Driven Multiple Access (ODMA) scheme allowing a mobile station to communicate with a base station by way of at least one other mobile station, said mobile communication system comprising:
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a mobile station for determining whether data demodulated after being received is reception data for said mobile station or transfer data to be transferred to the other mobile station or the base station, deciding a modulation mode suitable for transmitting sum data of transmission data and said transfer data according to an amount of said sum data if said transmission data is generated in said mobile station, and transmitting said sum data while modulating said sum data according to said modulation mode decided; and a base station for demodulating a reception signal relayed in said ODMA scheme according to a modulation mode of the mobile station having directly communicated with said base station, identifying each data item multiplexed and included in thus demodulated data, multiplexing data to be transmitted to a plurality of mobile stations, and transmitting thus multiplexed data to said mobile station.
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6. A mobile communication method for allowing a mobile station to communicate with a base station by way of at least one other mobile station in an Opportunity Driven Multiple Access (ODMA) scheme, said method comprising:
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a determining step of determining whether data demodulated after being received is reception data for said mobile station or transfer data to be transferred to the other mobile station or the base station; an adding step of adding transmission data to said transfer data and outputting thus obtained sum data if said transmission data is generated in said mobile station, and outputting said transfer data alone if there is no transmission data; a deciding step of deciding a modulation mode suitable for transmitting data obtained by said adding step according to an amount of said data; and a modulating step of modulating said data obtained by said adding step according to said modulation mode decided by said deciding step. - View Dependent Claims (7, 8, 9)
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10. A mobile communication program for allowing a mobile station to communicate with a base station by way of at least one other mobile station in an Opportunity Driven Multiple Access (ODMA) scheme, said program causing a computer to execute:
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a determining step of determining whether data demodulated after being received is reception data for said mobile station or transfer data to be transferred to the other mobile station or the base station; an adding step of adding transmission data to said transfer data and outputting thus obtained sum data if said transmission data is generated in said station, and outputting said transfer data alone if there is no transmission data; a deciding step of deciding a modulation mode so as to attain a greater number of modulation values as the amount of data obtained by said adding step is greater; and a modulating step of modulating said data obtained by said adding step according to said modulation mode decided by said deciding step. - View Dependent Claims (11)
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Specification