Abstract: In a cellular telecommunications system using wireless telecommunication between mobile parts and base stations, a method of handing off telecommunications connections from uncoordinated, unlicensed operation of the system to coordinated, licensed operation and vice versa. The method requires only simple circuitry and little energy consumption in the mobile parts. Initial monitoring is carried out in the base station, which supports uncoordinated, unlicensed system operation.

Abstract: According to the invention, transmissions of the second radio station are received in the first radio station in which the operating instruction for transmission power of the second radio station is determined. The operating instruction is transmitted during a following transmission of the first radio station to the second radio station, whereupon the latter takes into account the operating instruction for power regulation during one of its following transmissions. Contrary to prior art, no time invariable or fixed step size is used. An operating instruction is used instead which is related to a variable step size in transmission power regulation. The variable step size is subscriber-dependent and time-dependent regulated by the radio stations.

Abstract: According to the invention, a service-specific static rate adaptation factor that controls a service-specific quality of service is determined in a manner already known per se. A dynamic rate-oriented rate adaptation factor is determined for a link, whereby said factor adapts the hypothetical volume of data to a volume of data that is available in the next frame while taking into account the adaptation of the service-specific data rate that is yet to be performed. It is possible to pass through several optimization loops if said data volume is not rigidly predetermined as a result of a sufficient number of transmission channels and spread factors. A service-specific rate adaptation factor is determined by combining the static rate adaptation factor and the dynamic link-related rate adaptation factor, whereupon one single and therefore one-step adaptation of the data rate is carried out.

Abstract: The correlations of different channel impulse responses are used to improve, simplify and optimize the assessment of wire-free transmission channels in telecommunications systems. In particular, the different channel and pulse responses are correlated by identifying a similarity between the different responses and driving a mean channel impulse response from the different channel impulse responses when they are identified as similar.

Abstract: The invention relates to a telecommunication system wherein the known multi-code option is used in downlink (direction of transmission: base station to mobile station) and the known multi-slot option is used in upink (direction of transmission: mobile station to base station).

Abstract: A radio communications system provides frequency channels which are formed both by time slots and by broadband frequency ranges, and in which information from a plurality of connections is simultaneously transmitted between mobile stations and base stations wherein it is possible to distinguish the information from different connections in accordance with a connection-specific fine structure. Frequency channels are repeatedly provided for time synchronization of the mobile stations in the downward direction in which a signal form is transmitted in addition to information from further connections. The mobile station to be synchronized determines from received signals at least one instant of the arrival of the signal form, which is subsequently used by the mobile station for time synchronization. The system is advantageously applied, for example, in TDD mode for the third mobile communications generation which combines a TDMA and CDMA subscriber separation method.

Abstract: In order to control the transmitting power provided for point-to-multipoint telecommunications links in a telecommunications system with wireless telecommunication and uncoordinated unlicensed system operation, without significant restriction of the transmitting range, use is made of the fact that the maximum number of mobile stations (MS1 . . . MSn) registered in a base station (BS1) is known. Thus, the base station knows at any time how many and which mobile stations are registered. If all mobile stations are registered (NACT=NSCHED), the base station can match the transmitting power to the mobile station received as the “weakest one”. In other cases, if not all mobile stations are registered (NACT≠NSCHED), the base station will alternately transmit with the maximum transmitting.

Abstract: A reception device is disclosed for a radio communication system for the reception of subscriber signals via a radio interface. The reception device contains a means for determining number of active subscribers from the a total number of subscribers that are assigned to the radio interface, and contains a further detection device for detecting at least one subscriber signal. As a result of the determination of the subscribers actually active from the subscriber signals, a detection is simplified particularly when the subscriber signals are separated by a fine structure.

Abstract: A TDMA/CDMA radio communications system provides frequency channels which are formed both by time slots and by broadband frequency ranges, and in which information from a plurality of connections can be simultaneously transmitted between mobile stations and a base station wherein it is possible to distinguish the information from different connections in accordance with a connection-specific fine structure. Frequency channels are repeatedly provided for frequency synchronization of the mobile stations in the downward direction in which a symbol sequence is transmitted. From received signals, the mobile station to be synchronized determines estimated values for the symbol sequence and compares these estimated values with a reference sequence. It is thereby possible to calculate a phase drift in the estimated values with reference to the reference sequence wherein a frequency offset, which is used for frequency synchronization, is determined from the phase drift.

Abstract: An individual parameter with respect to a required receptivity is determined for at least one service, and is sent by a base station, in a radio communications system which offers a number of services for mobile stations via a radio interface in a radio cell. A mobile station receives and evaluates the parameter, then compares the current receptivity of emissions of the base station with the parameter. The service is requested by the mobile station in dependence on the result of the comparison. The invention is suitable for use in TDMA and CDMA transmission systems.

Abstract: 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.

Abstract: A method for allocating radio channels in a radio communications system having timeslots includes the steps of allocating the radio channel for the downlink direction to a mobile station as a function of a channel allocation pattern which indicates the transmission power levels for the timeslots. The mobile station corrects the allocation of the radio channel as a function of an interference pattern which indicates the interference power levels in the timeslots. The allocation process results in the transmission power level being distributed as uniformly as possible between the timeslots which are provided for a connection from the radio station in the downlink direction, wherein the allocation process is a function of the occupancy of the timeslots in accordance with the channel allocation pattern.

Abstract: A method for transmitting organization information items from a base station to mobile stations in a radio communications system which offers a plurality of services within a radio cell of the base station. The organization information items are subdivided into first and second organization information items on the basis of the services requested at a given moment and only the first organization information items are transmitted. As a result, the currently required information items are made available in a manner that saves resources, yet the integration of new services is made possible. The method is suitable for TDMA/CDMA and CDMA transmission systems.

Abstract: An individual parameter with respect to a required receptivity is determined for at least one service, and is sent by a base station, in a radio communications system which offers a number of services for mobile stations via a radio interface in a radio cell. A mobile station receives and evaluates the parameter, then compares the current receptivity of emissions of the base station with the parameter. The service is requested by the mobile station in dependence on the result of the comparison. The invention is suitable for use in TDMA and CDMA transmission systems.

Abstract: A process for receiving data in which the channel pulse responses are estimated, whereby a time interval between adjustments of a receiver to current channel pulse responses is varied and is adjusted to a change in transmission properties of transmission channels.

Abstract: In a transmission method for simultaneous synchronous or asynchronous transmission of K data sequences consisting of data symbols, before transmission a specific signal form allocated to the data sequences is modulated on each of the data symbols of the K data sequences transmitted via a channel or K generally distinguishable channels, in order to generate the K transmission signals, which are all distorted by the one channel, or one of the K channels. In the receiver, continuous-valued provisional estimated values are calculated for some or all of the data symbols of the K input sequences according to a linear method, and a confidence level for the estimated values is calculated.

Abstract: A method for separating a signal mix composed of the additive superposition of M known functions that are weighted with M unknown weighting factors, whereby all or some of the functions are chronologically and/or spectrally not disjunctive. The signal mix including a potential noise signal is supplied to a signal evaluation device that, by filtering, forms true-to-expectation estimated values for the unknown weighting factors. For the first time, this provides a true-to-expectation separation of a signal mix composed of non-orthogonal functions. An apparatus for the implementation of the method forms linear combinations of the correlation products from the input signal and from the functions to be separated. Instead of the functions to be separated, versions of these functions modified according to the properties of the superimposed noise signal can also be used in the formation of the correlation products.