Patent ID: 8594717

Claim:
A method for identifying supported transmission channel configurations in a mobile communications apparatus, the method comprising: pre-calculating the required power value for each transmission channel configuration using a value of the mobile communications apparatus maximum transmit power and a gain relationship, the gain relationship being a ratio of a gain for the transmission channel configuration data channel with gain for the transmission channel configuration control channel; and performing a sequential comparison of: an indication of an available measured power value calculated from a measurement of transmit power of a particular preceding transmission interval and using a gain relationship of the transmission channel configuration used during the particular preceding transmission interval, and an indication of the required power for each transmission channel configuration; and identifying a particular transmission channel configuration as supported if the required power for the particular transmission channel configuration is less than the available power value; wherein: the transmission channel configurations are arranged in descending order of the indication of required power; the sequential comparison is performed in descending order of magnitude of value of the indication of the required power; and the method further comprising stopping said comparison when a supported transmission channel configuration is identified.