Method and apparatus for determining receive diversity in mobile station
First Claim
1. An apparatus for determining receive diversity in a communication system, comprising:
- a control system for determining a demand level associated with system capacity of said communication system; and
a transmitter for communicating a message indicating use of receive diversity at a mobile station, said message based on said determined demand level, wherein said message indicates at least one of reducing a scale, turning off, turning on and increasing scale of receive diversity at said mobile station.
1 Assignment
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Accused Products
Abstract
For determining use of receive diversity in a mobile station, a control system (210 or 401) determines a demand level for use of communication resources. A transmitter (300) communicates a message indicating use of receive diversity at a mobile station based on the determined demand level. In another aspect, a receiver (200) receives a channel and determines transmit power level of the channel for being at a lower or upper transmit power level limit. The control system (210 or 401) controls receive diversity by selecting a number of receiver chains (290) based on the determined transmit power level. In another aspect, receiver (200) receives a channel and determines a channel condition of the channel and duration of the channel condition. Control system (210 or 401) controls receive diversity by selecting a number of receiver chains (290) based on the determined channel condition and the duration.
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Citations
23 Claims
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1. An apparatus for determining receive diversity in a communication system, comprising:
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a control system for determining a demand level associated with system capacity of said communication system; and a transmitter for communicating a message indicating use of receive diversity at a mobile station, said message based on said determined demand level, wherein said message indicates at least one of reducing a scale, turning off, turning on and increasing scale of receive diversity at said mobile station.
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2. An apparatus for determining receive diversity in a communication system, comprising:
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a control system for determining a demand level associated with system capacity of said communication system; and a transmitter for communicating a message indicating use of receive diversity at a mobile station, said message based on said determined demand level, wherein said message indicates at least one of reducing a scale and turning off use of receive diversity at said mobile station when said demand level is lesser than a predetermined level.
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3. An apparatus for determining receive diversity in a communication system, comprising:
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a control system for determining a demand level associated with system capacity of said communication system; and a transmitter for communicating a message indicating use of receive diversity at a mobile station, said message based on said determined demand level, wherein said message indicates at least one of increasing scale and turning on use of receive diversity at said mobile station when said demand level is higher than a predetermined level.
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4. A method for determining receive diversity in a communication system, comprising:
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determining a demand level associated with system capacity of said communication system; communicating a message indicating use of receive diversity at a mobile station in said communication system, said message based on said determined demand level; and determining, for indication by said message, at least one of reducing a scale, turning off, turning on and increasing scale of receive diversity at said mobile station.
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5. A method for determining receive diversity in a communication system, comprising:
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determining a demand level associated with system capacity of said communication system; communicating a message indicating use of receive diversity at a mobile station in said communication system, said message based on said determined demand level; and determining, for indication by said message, at least one of reducing a scale and turning off use of receive diversity at said mobile station when said demand level is lower than a predetermined level.
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6. A method for determining receive diversity in a communication system, comprising:
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determining a demand level associated with system capacity of said communication system; communicating a message indicating use of receive diversity at a mobile station in said communication system, said message based on said determined demand level; and determining, for indication by said message, at least one of increasing scale and turning on use of receive diversity at said mobile station when said demand level is higher than a predetermined level.
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7. An apparatus for determining receive diversity in a communication system, comprising:
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a receiver, including a plurality of receiver chains, for receiving a channel and determining a channel condition of said channel and duration of said channel condition; and a control system for controlling receive diversity of said receiver by selecting a number of said plurality of receiver chains based on said determined channel condition and said duration. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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15. A method for determining receive diversity in a communication system, comprising:
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determining a channel condition of a channel received at a receiver, including a plurality of receiver chains, and duration of said channel condition; and controlling receive diversity of said receiver by selecting a number of said plurality of receiver chains based on said determined channel condition and said duration. - View Dependent Claims (16, 17)
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18. The method as recited in claim further comprising:
reducing said number of selected receiver chains when said determined channel condition is above a disable-receive-diversity threshold and said determined duration is longer than a receive-diversity-disable period threshold and increasing said number of selected receiver chains when said determined channel condition is below an enable-receive-diversity threshold and said determined duration is longer than a receive-diversity-enable period threshold, wherein said disable-receive-diversity threshold corresponds to a stronger channel condition than a channel condition corresponding to said enable-receive-diversity threshold. - View Dependent Claims (19, 20, 21, 22)
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23. A computer readable medium embodying instructions executable by a processor to perform a method comprising:
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determining a demand level associated with system capacity of a communication system; and communicating a message indicating use of receive diversity at a mobile station, said message based on said determined demand level, wherein said message indicates at least one of reducing a scale, turning off, turning on and increasing scale of receive diversity at said mobile station.
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Specification