Abstract: A packet transmission method and apparatus, according to which short data samples or mini packets from several simultaneous connections are multiplexed to a variable length packet. The length of the mini packets is defined in a common length field for mini packets of the same length, which saves bandwidth. Each mini packet has its own header, which defines at least an identification information of the mini packet. Thus, the variable length packet, e.g. an IP packet, includes a plurality of mini packets with a minimum header portion, such that transmission overhead is reduced due to the fact that most mini packets tend to be of the same length. Moreover, different queues for mini packets of one respective length may be provided, from which mini packets of one length are multiplexed to the variable length data packet. Thereby, the ratio of variable length data packets including mini packets of one length is further increased so as to further decrease the transmission overhead.

Abstract: A method of selecting the serving network element in a telecommunications network. Mobility agents or routers transmit attribute information on one or more network elements in advertising messages to at least one mobile node. This information is used in the mobile node for selecting the serving network element.

Abstract: The invention relates to a communications system comprising a transmitter (30) and a receiver (30) for transmitting transparent data over a connection (32) therebetween. The bandwidth (b2) assigned to the connection (32) is wider than the bandwidth (b1) actually required by a nominal bit rate of the transparent data so as allow the use of a retransmitting protocol over the connection by enabling data transmission to stop and wait for retransmission of the incorrectly received frames while a transparent connection with a constant delay and a constant bit rate and a low BER is provided to the user. The incoming transparent data stream with a constant bit rate is buffered into a transmission buffer (300) and the frames received over the retransmitting connection (32) are buffered into a receiving buffer (310) which outputs the transparent data at the constant nominal bit rate.

Abstract: The invention relates to a cellular radio network and a method of connecting a base station (100) to a cellular radio system, which enable a fast and automatized installation of base stations wherever an IP information network is available, the cellular radio system comprising a base station system which comprises as network elements a base station controller (102) and at least one base station, and in which method the base station controller controls at least one base station.