Abstract: A method is provided for the administration of a muticast service whereby mobile terminals of users who have subscribed to the multicast service receive multicast messages via a mobile communication network. The present invention seeks to use the available radio resources in a more economical manner. To this end, the mobile terminals are respectively prodied with an input unit which, when actuated, produces activation information which indicates whether the multicast service is activated or deactivated, and the activation information is transmitted to the mobile communication network.

Abstract: According to the inventive method for controlling access in a radio communications system, several subscriber stations (MS1, MS2) transmit a respective access sequence (SYNC1) to a base station (BS) of the radio communications system on a channel for random access (RACH). Afterwards, the radio communications system signals a selection of a subscriber station (MS1) on another channel (FPACH). The selected subscriber station (MS1) can subsequently transmit additional sequences to the base station (BS) on a physical access channel (PRACH). A known relationship between the access sequences (SYNC1) and the physical channels distinctively exists, and at least two physical access channels (PRACH) are assigned to another channel (FPACH).

Abstract: To transmit data packets between a transmitter and a receiver, the data packets are transmitted in coded from as coding units. The received data packets are stored in coded or uncoded form in the receiver inside a memory. The receiver notifies the transmitter of the capacity utilization of the memory.

Abstract: A method of operating a high speed, error-free data transmission system in a noisy medium includes compressing data determined to be compressible, forward error correcting the data and interleaving the data in a bit matrix memory to enhance the forward error correction. Digital information packets are formulated including a header bearing a packet number, the total packet byte count, any packet number resend request, the data byte count of the actual data and a CRC. The digital information packet is loaded onto a transmitter carousel having a fixed number of sectors. The receiver receives the data, requests resend of any packet (by number) that is defective, error corrects if necessary and sequentially loads the packet onto a receiver carousel. Packets or sequential packet groups are removed from the carousel, selectively decompressed and the data words extracted and sent to the output.