Patent ID: 7821982

Claim:
A packet communications method for carrying out packet communications between a base station and a mobile station located in an area controlled by the base station, the method comprising: establishing a list of available modulation schemes, each modulation scheme being associated with a channel quality and an available transmission block size; detecting a channel quality between the base station and the mobile station; detecting the amount of data buffered in a transmission buffer of a sender; determining a temporary modulation scheme and a temporary transmission block size from the list based on the channel quality; and if the buffered data amount is greater than or equal to the temporary transmission block size, selecting the temporary modulation scheme as the actual modulation scheme to be used in the packet communications, and if the buffered data amount is less than the temporary transmission block size, selecting a modulation scheme from the list corresponding to a smallest available transmission block size that is greater than or equal to the amount of data buffered and with a minimum difference from the buffered data amount.