Abstract: In a packet data transmission via a radio interface of a communication system, a packet number as identification information is transmitted for every data packet between data stations communicating with one another. To improve transmission security for the identification information, the identification information is multiplied and distributed separately to at least two data packets or transmitted separately in a separate information data packet.

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: The invention relates to a method and a radio communication system for the transmission of packet data units (SN#10, SN#11), by means of a radio interface in a radio communication system with at least one transmitter and at least one receiver, whereby the original data to be sent may be encoded with various codes to give various encoded units (CW1, CW2, CW3). Said various encoded units (CW1, CW2, CW3) are transmitted either consecutively or parallel to increase the redundancy in the receiver-side reconstruction of the original sent data and information on the underlying packet data units (SN#10, SN#11) is transmitted with the encoded units. According to the invention, the reconstruction of data may be expedited and improved by the transmission of information about the corresponding codes (CW1, Cw2, CW3) to the receiver with the encoded units and by a request from the receiver to the transmitter for the transmission of one or several selected encoded units.

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.

Abstract: In a packet data transmission via a radio interface of a communication system, a packet number as identification information is transmitted for every data packet between data stations communicating with one another. To improve transmission security for the identification information, the identification information is multiplied and distributed separately to at least two data packets or transmitted separately in a separate information data packet.