Siemens Aktiengesellschaft

Christian L&uuml;ders

Anja Klein

Michael F&auml;rber

A method is described in which a signaling message is sent from a first radio station to a second radio station. The message contains information relating to both a frequency channel number and a frequency channel bandwidth, each referring to a common standard bandwidth. The signaling message is received by the second radio station, and the signaled frequency channel is used for transmission and reception purposes. The data relating to the frequency channel number and the bandwidth indicate which frequency channel has to be used. In addition the signal includes information about using radio communication systems with a plurality of non-interconnected frequency bands and with bandwidths intended for various applications.

Method and radio communications system for assigning a frequency channel to a radio station and appropriate radio station

A base station is provided that contains at least one combination means to which at least two base station branches are connected for covering a cell. The transmission quality for a communication connection is monitored for each base station branch and base station branches are correspondingly activated or, respectively, deactivated for this communication connection in both transmission directions. The invention also can be realized in base stations that include sector antennas for covering a cell. The invention is particularly suited for utilization in cellular mobile radiotelephone systems; for example, the GSM mobile radiotelephone system.

Base station and method for covering a cell of a cellular mobile radiotelephone system

A process for the transmission of data packets from mobile stations to base stations in mobile radio systems operated by the time-division multiplex method where an effective utilization of resources and a reduced amount of signalling is achieved in the transmission of such data packets by the fact that the determination of the timing advance for the time of sending of the mobile station is linked to the satisfying of decision criteria with respect to the period of time between timing advance determinations. This period of time can be made relatively generous by transmitting the data packets with a short guard time.

Growing community of inventors

Haar, Germany

Christian Lüders

Growing community of inventors

Haar, Germany

Christian L&uuml;ders

Christian Lüders