Alcatel

Christoph Sperber

Ulrich Barth

Edgar K&uuml;hn

Philippe Desblancs

Xavier Dugast

A cordless telecommunications system (CTS) with a base station (CTS-FP) and with at least one mobile station (MS) initialised at the base station (CTS-FP), for carrying out a process for transmitting operating parameters from a control centre (Z) of a superimposed telecommunications network (PLMN; PSTN, ISDN), which transmits operating parameters initially to the base station (CTS-FP) or to one of the mobile stations (MS) of the cordless telecommunications system (CTS) and then relays the operating parameters to as far as possible all initialised mobile stations or to the base station (CTS-FP) as well as to as far as possible all other initialised mobile stations (MS) is proposed. Thus, new operating parameters can easily be distributed centrally to one or more limited cordless telecommunications systems and can be activated.

Method for transferring operating parameters from a control center to a locally limited wireless telecommunications system and a corresponding wireless telecommunications system

Wireless telecommunications systems with at least one base station and with mobile user terminals are known where radio signals are transmitted and received in different time and frequency states. Both on user channels as well as on signaling channels there are radio signals that are transmitted corresponding to the predicted frequency hopping sequence. We now suggest, first, that the base station and the user terminal contain controllers (CTR) to control the frequency state alternation that produce no frequency hopping sequences for the first part of the time grid but rather predict a steady frequency (f ) and produce a pseudorandom frequency hopping sequence (THS) for at least one further part of the time grid after one iterative process (LGNR), second, that the base station transmits an input value (CW) to the user terminals in order to process the pseudorandom frequency hopping sequence, and to control the frequency alternation in accordance with this pseudorandom frequency hopping sequence in the controller for registering user terminals. This way we can achieve the result that a processed frequency hopping sequence is used as early as during transmission of registration signals, i.e. a frequency hopping sequence that is developed on the basis of the input value and does not have to be saved completely.

Wireless telecommunications system, base station and mobile user terminal that exchange radio signals according to a frequency hopping sequences

A method for establishing a telecommunications link utilizing bursts in a digital radio network having at least one other digital radio network superposed thereon. The bursts of the two digital radio networks have the same bit structure but differ in a specific bit training sequence, and this training sequence of a burst is checked during the establishment of the telecommunications link. By processing only bursts with the training sequences of the desired digital radio network, erroneously received other bursts are filtered out and discarded.

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Pforzheim, Germany

Christoph Sperber