Patent ID: 7636551
Filing Date: 2009-12-22
Classification: H04L,H04W

Abstract:
1. A radio communication apparatus of a radio communication system wherein communication signals are transmitted between the radio communication apparatus and at least one communication terminal, said apparatus comprising: a measurement result obtainer that obtains a measurement result of the reception quality of the communication signals at the communication terminal; a transmission section that transmits a transmission signal in a communication channel from the radio communication apparatus to the communication terminal with a predetermined transmission rate; a comparison section that compares the reception quality measurement result with a respective threshold to determine the communication channel condition; and a transmission rate switching controller that switches the transmission rate according to the result of comparing the reception quality measurement result with the respective threshold to allow a variation of the transmission rate, wherein: the radio communication system is a CDMA communication system and the threshold is set depending on the number of multiplexing codes.