Channel measurement reports are groups of channel quality measurements that are sent from one radio device (such as a subscriber station) to another radio device (such as a system base station transceiver) that may be used to assist and adjust the radio transmission parameters (such as modulation type and RF power level) between the radio devices. Channel measurement reports are typically sent periodically to allow the base station or system to determine how the channel quality is changing to help it make decisions on channel modulation and coding types. The WiMAX system channel measurement reports include; radio signal strength indicators (RSSI), and channel to interference and noise ratio (CINR).
RSSI is the approximate level of a received signal captured by the radio device. Carrier to interference and noise ratio is a comparison of the information-carrying signal power to the interference and noise power in a system.
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