RADIO COMMUNICATION METHOD, RADIO COMMUNICATION SYSTEM, RADIO BASE STATION APPARATUS, AND COMMUNICATION TERMINAL APPARATUS

摘要

A radio communication method is provided that enables the TFC pointer of a communication terminal apparatus to be made to match the TFC pointer of a radio base station apparatus. Amobile station changes its TFC pointer in line with a determined TFC and also transmits a TFCI at point in time t3. The base station checks the TFCI and updates its own TFC pointer so as to match with the TFC indicated by the TFCI. The base station determines a new TFC pointer, generates an up/down/keep signal by comparing the new TFC pointer with the updated TFC pointer, and transmits this signal at point in time t5. The mobile station updates the TFC pointer it is holding based on the up/down/keep signal received at point in time t6. As a result, the TFC pointers of both stations can be made to match even if the mobile station receives an up/down/keep signal erroneously at point in time t2.