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 radio environment is that it is strongly unidirectional. In accordance with the present invention, a connection can be adapted to this fact so that the connection is asymmetric, providing a large transmitting capacity in the direction in which the most of the data stream is passing, whereas in the opposite direction, the transmitting capacity is smaller. The transmission and reception time-slots are arranged asymmetrically so that transmission and reception do not take place simultaneously. Upon establishing a connection, the mobile station informs the network of its maximum capacity regarding reception and transmission, whereby the network calculates an appropriate time-slot configuration. First, a symmetric connection consisting of a specific number of channel pairs is allocated in the same way as in a prior art HSCSD method. Thereafter, only the required time-slots in the transmitting and receiving directions are used, still keeping the unused time-slots allocated.