PROCESS FOR DETERMINING A TIME ADVANCE INFORMATION IN A CELLULAR RADIOCOMMUNICATION SYSTEM, CORRESPONDING INTERCELLULAR TRANSFER PROCESS AND LOCATION PROCESS

摘要

The invention relates to a method for determining timing advance information in a cellular radio communication system, of the type comprising the following steps: a mobile station (1) interrupts its communication, on a current channel, with a first communication station. base for sending (2) to a second base station, on a first target channel, a sequence of synchronization signals allowing said second base station to calculate (4) a time advance information associated with said mobile station vis- vis-à-vis said second base station; the mobile station resumes (3) its communication, on said current channel, with the first base station immediately after having sent to the second base station said sequence of synchronization signals; said time advance information calculated by said second base station is transmitted (5, 6), via at least one controller, to said mobile station. According to the invention, said first target channel is a common access channel to a plurality of mobile stations.