METHOD AND SYSTEM FOR CONSTRUCTING CHANNEL QUALITY INDICATOR TABLES FOR FEEDBACK IN A COMMUNICATION SYSTEM
First Claim
1. A method for wireless communication, the method comprising:
- receiving from a base station, a radio signal by a user terminal, wherein said radio signal is transmitted using a first modulation and coding scheme (MCS); and
transmitting channel quality information from said user terminal to said base station, wherein said channel quality information is determined by said user terminal based on said received radio signal and a channel quality indicator (CQI) table comprising a plurality of modulation regions that are arranged in terms of spectral efficiency.
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Abstract
Aspects of a method and system for constructing channel quality indicator tables for feedback in a communication system are provided. A user terminal may receive a signal transmitted by using a modulation and coding scheme (MCS) from a base station. The user terminal may assess channel quality information by accessing a CQI table to identify a CQI value based on the received radio signal. The CQI table may comprise various modulation regions in terms of spectral efficiency. The identified CQI value may be transmitted to the base station. Various standard system protocols such 3GPP, 3GPP LTE, or WiMAX, may be used for transmissions. The CQI table may be generated via PER versus spectral efficiency and/or SNR, respectively. The base station may select a MCS based on the CQI feedback from the user terminal for transmitting a subsequent radio signal to the user terminal.
63 Citations
24 Claims
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1. A method for wireless communication, the method comprising:
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receiving from a base station, a radio signal by a user terminal, wherein said radio signal is transmitted using a first modulation and coding scheme (MCS); and transmitting channel quality information from said user terminal to said base station, wherein said channel quality information is determined by said user terminal based on said received radio signal and a channel quality indicator (CQI) table comprising a plurality of modulation regions that are arranged in terms of spectral efficiency. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system for wireless communication, the system comprising:
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one or more circuits operable to receive from a base station, a radio signal by a user terminal, wherein said radio signal is transmitted using a first modulation and coding scheme (MCS); and said one or more circuits are operable to transmit channel quality information from said user terminal to said base station, wherein said channel quality information is determined by said user terminal based on said received radio signal and a channel quality indicator (CQI) table comprising a plurality of modulation regions that are arranged in terms of spectral efficiency. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification