Cellular communication system with dynamically modified data transmission parameters
First Claim
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1. A cellular communication system, comprising:
- a plurality of base stations coupled to a system backbone, each of the base stations comprising a base station receiver system for receiving wireless communications and a base station transmitter system for transmitting wireless communications; and
a plurality of mobile terminals each for communicating with the system backbone by way of at least one of the plurality of base stations, each of the plurality of mobile terminals having a mobile terminal transmitter for transmitting wireless communications to the at least one the plurality of base stations and a mobile terminal receiver system for receiving wireless communications from the at least one of the plurality of base stations;
wherein, with respect to at least one of the mobile terminals, at least one of the mobile terminal transmitter system and the mobile terminal receiving system wirelessly communicates with the at least one of the plurality of base stations by selectively transmitting or receiving data according to a plurality of different PN code parameters as a result of dynamically modifying the transmitting or receiving PN code parameters based on predetermined criteria relating to achieving an optimal communication rate.
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Abstract
An apparatus and process for improving the performance of a cellular communication system using direct sequence spread spectrum techniques. The apparatus and process enable dynamic modification of communication system parameters including PN code length, chipping rate and modulation technique for transmission of a data packet. Modification is based on proximity of the transmitter and receiver, transmitter and receiver capabilities and other factors. The system evaluates tradeoffs between data transmission speed and communication range to improve system performance.
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Citations
46 Claims
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1. A cellular communication system, comprising:
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a plurality of base stations coupled to a system backbone, each of the base stations comprising a base station receiver system for receiving wireless communications and a base station transmitter system for transmitting wireless communications; and a plurality of mobile terminals each for communicating with the system backbone by way of at least one of the plurality of base stations, each of the plurality of mobile terminals having a mobile terminal transmitter for transmitting wireless communications to the at least one the plurality of base stations and a mobile terminal receiver system for receiving wireless communications from the at least one of the plurality of base stations; wherein, with respect to at least one of the mobile terminals, at least one of the mobile terminal transmitter system and the mobile terminal receiving system wirelessly communicates with the at least one of the plurality of base stations by selectively transmitting or receiving data according to a plurality of different PN code parameters as a result of dynamically modifying the transmitting or receiving PN code parameters based on predetermined criteria relating to achieving an optimal communication rate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 23)
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14. A cellular communication system, comprising:
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a plurality of base stations coupled to a system backbone, each of the base stations comprising a base station receiver system for receiving wireless communications and a base station transmitter system for transmitting wireless communications; and a plurality of mobile terminals each for communicating with the system backbone by way of at least one of the plurality of base stations, each of the plurality of mobile terminals having a mobile terminal transmitter for transmitting wireless communications to the at least one the plurality of base stations and a mobile terminal receiver system for receiving wireless communications from the at least one of the plurality of base stations; wherein, with respect to at least one of the mobile terminals, at least one of the mobile terminal transmitter system and the mobile terminal receiving system wirelessly communicates with a first of the at least one of the plurality of base stations by selectively transmitting or receiving data according to a plurality of different transmission parameters. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 24)
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25. A cellular communication system, comprising:
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a plurality of base stations coupled to a system backbone, each of the base stations comprising a base station receiver system for receiving wireless communications and a base station transmitter system for transmitting wireless communications; and a plurality of mobile terminals each for communicating with the system backbone by way of at least one of the plurality of base stations, each of the plurality of mobile terminals having a mobile terminal transmitter for transmitting wireless communications to the at least one the plurality of base stations and a mobile terminal receiver system for receiving wireless communications from the at least one of the plurality of base stations; wherein, with respect to at least one of the mobile terminals, at least one of the mobile terminal transmitter system and the mobile terminal receiving system wirelessly communicates with the at least one of the plurality of base stations by selectively transmitting or receiving data according to a plurality of different PN code parameters as a result of dynamically modifying the transmitting or receiving PN code parameters based on predetermined criteria relating to achieving an optimal communication rate; and wherein at least another one of the mobile terminals cannot vary any of its transmission parameters. - View Dependent Claims (26, 27)
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28. A cellular communication system, comprising:
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a plurality of base stations coupled to a system backbone, each of the base stations comprising a base station receiver system for receiving wireless communications and a base station transmitter system for transmitting wireless communications; and a plurality of mobile terminals each for communicating with the system backbone by way of at least one of the plurality of base stations, each of the plurality of mobile terminals having a mobile terminal transmitter for transmitting wireless communications to the at least one the plurality of base stations and a mobile terminal receiver system for receiving wireless communications from the at least one of the plurality of base stations; wherein, with respect to the at least one of the base station, at least one of the base station transmitter system and the base station receiving system wirelessly communicates with one of the mobile terminals by selectively transmitting or receiving data according to a plurality of different PN code parameters as a result of dynamically modifying the transmitting or receiving data'"'"'s PN code parameters based on predetermined criteria relating to achieving an optimal communication rate. - View Dependent Claims (29, 30, 31)
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32. A cellular communication system, comprising:
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a plurality of base stations coupled to a system backbone, each of the base stations comprising a base station receiver system for receiving wireless communications and a base station transmitter system for transmitting wireless communications; and a plurality of mobile terminals each for communicating with the system backbone by way of at least one of the plurality of base stations, each of the plurality of mobile terminals having a mobile terminal transmitter for transmitting wireless communications to the at least one the plurality of base stations and a mobile terminal receiver system for receiving wireless communications from the at least one of the plurality of base stations; wherein, with respect to the at least one of the base station, at least one of the base station transmitter system and the base station receiving system wirelessly communicates with one of the mobile terminals by selectively transmitting or receiving data according to a plurality of different transmission parameters based on communications received from the mobile terminal. - View Dependent Claims (33, 34, 35, 36, 37)
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38. A cellular communication system, comprising:
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a plurality of base stations coupled to a system backbone, each of the base stations comprising a base station receiver system for receiving wireless communications and a base station transmitter system for transmitting wireless communications; and a plurality of mobile terminals each for communicating with the system backbone by way of at least one of the plurality of base stations, each of the plurality of mobile terminals having a mobile terminal transmitter for transmitting wireless communications to the at least one the plurality of base stations and a mobile terminal receiver system for receiving wireless communications from the at least one of the plurality of base stations; wherein, with respect to the at least one of the base station, at least one of the base station transmitter system and the base station receiving system wirelessly communicates with one of the mobile terminals by selectively transmitting or receiving data according to a plurality of different PN code parameters as a result of dynamically modifying the transmitting or receiving PN code parameters based on predetermined criteria relating to achieving an optimal communication rate; and
wherein at least another one of the base stations cannot vary any of its transmission parameters. - View Dependent Claims (39, 40)
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41. A base station coupled to a system backbone for use in a cellular communication system, the base station comprising:
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a transmitting system for wirelessly communicating data to a mobile terminal included in the cellular communication system; and a receiving system for wirelessly receiving data from the mobile terminal; wherein at least on of the transmitting system and the receiving system wirelessly communicates with the mobile terminal by selectively transmitting or receiving data according to a plurality of different transmission parameters based on communications received from the mobile terminal. - View Dependent Claims (42, 43, 44, 45, 46)
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Specification