摘要:
A method for disturbance-free operation of at least two base stations working according to the CDMA (Code Division Multiple Access) principle in a universal mobile telecommunications system, preferably in-house base stations, with partially overlapping radio fields relative to one another and/or with respect to a telecommunications radio cell network, wherein, the base stations transmit the communications information using the CDMA multiple access method, at least two participating stations carry out an autosynchronization procedure for the purpose of eliminating disturbing interferences on account of the overlapping radio fields and identical transmission frequency, chip synchronism being produced as a result and, consequently, good reception of the orthogonal codes, i.e. good subscriber separation of the multiple access method, is ensured.
摘要:
A method for the radio coverage of a mobile terminal of a mobile radio network in the catchment area of an intermediate station which is used as a converter, wherein: in the case of an existing connection between the mobile radio network and the mobile terminal, a connection is first set up on an internal frequency and the connection is then handled via the intermediate station; in the case of an existent connection from a mobile terminal via an intermediate station to the mobile radio network, the intermediate station will hand over the connection to the mobile terminal again directly to the mobile radio network when the mobile terminal is removed from the internal area of reception; and in the case of a new setting-up of a connection from the mobile terminal to the mobile radio network, for setting up the connection, the mobile terminal first, or after an unsuccessful connection set-up attempt with a mobile radio frequency, attempts to establish connection to an intermediate station on an internal frequency.
摘要:
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.
摘要:
A method for changing only one radio channel of an existing duplex radio link is wherein the radio channel changed or to be changed is the disturbed radio channel. The new radio channel (Dn) exhibits, for example in comparison with the disturbed radio channel, only a different timeslot wherein, the radio frequency remains the same.
摘要翻译:仅改变现有双工无线电链路的一个无线电信道的方法是其中无线电信道改变或被改变的是被干扰的无线电信道。 例如,与无干扰的无线电信道相比,新的无线电信道(D N n N N)表现出不同的时隙,其中射频保持不变。
摘要:
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. power for a predetermined first period of time and then with the reduced transmitting power, which matches the mobile station received as the “weakest one”, for a predetermined second period of time.
摘要:
A communication system and associated method are provided, wherein a quality of service is detected in the communication system, coordination reorganization is performed in order to reorganize coordination functionalities for available stations in the communication system, the previous two steps are repeated for various coordination organizations in the communication system, the various qualities of service detected in the various coordination organizations are analyzed, and a coordination organization is selected on the basis of this analysis, whereupon communication is affected with an external communication system which uses the same transmission medium as the communication system.
摘要:
The invention relates to the filtering of a subfrequency band out of a receive frequency band, in which a carrier frequency for prefiltering the receive frequency band and an intermediate frequency for demodulating the frequency band filtered out during the prefiltering and for generating a frequency baseband are inserted into the signal propagation path, in which the desired subfrequency band is filtered out of the frequency baseband by a post-filtering and in which the carrier frequency, the intermediate frequency and the post-filtering are matched to one another.
摘要:
A method of operating a Rake receiver circuit includes determining a first property of a first signal received over a dedicated channel and over a first transmission path. The method further includes determining a delay profile of a second signal and determining, on the basis of the delay profile and the first property, if the first transmission path is to be assigned to a Rake finger of the Rake receiver circuit.
摘要:
A radio receiver apparatus of a cellular network includes a channel estimator configured to calculate channel estimates on the basis of a common pilot channel. The apparatus further includes a weight calculation unit configured to calculate a weighting factor on the basis of a signal power of the common pilot channel and control data depending on a transmit signal power of a dedicated data channel. The control data is signaled by the cellular network to the radio receiver apparatus. The radio receiver apparatus further comprises a combiner that combines the signals from multiple cells by using the channel estimates and the weighting factor.
摘要:
The present invention relates to a method for the transmission of data in a multi-carrier system, provided with a frequency band, the carrier frequencies of which are distributed in a sub-carrier band, dividing the frequency band. On the transmission side, dependent on current transmission properties, an adaptive pre-emphasis of the transmission signal is carried out for a part of the carrier frequencies in the sub-carrier band. The transmitter thus has the capacity to determine current transmission properties as well as adaptive pre-emphasis of a part of the carrier frequencies in the sub-carrier band of the transmission signal.