AN ASYMMETRIC HIGH-SPEED DATA TRANSMISSION METHOD IN A MOBILE COMMUNICATIONS NETWORK

摘要

A typical feature of high-speed data transmission in a cellular radioenvironment is that it is strongly unidirectional. In accordancewith the present invention, a connection can be adapted to this fact so thatthe connection is asymmetric, providing a large transmittingcapacity in the direction in which the most of the data stream is passing,whereas in the opposite direction, the transmitting capacityis smaller. The transmission and reception time-slots are arrangedasymmetrically so that transmission and reception do not take placesimultaneously. Upon establishing a connection, the mobile station informs thenetwork of its maximum capacity regarding reception andtransmission, whereby the network calculates an appropriate time-slotconfiguration. First, a symmetric connection consisting of a specificnumber of channel pairs is allocated in the same way as in a prior art HSCSDmethod. Thereafter, only the required time-slots in thetransmitting and receiving directions are used, still keeping the unused time-slots allocated.