Kathrein-werke Kg

Ubidyne, Inc.

Kathrein Se

Katrein-werke Kg

Kathrein-werker Kg

Johannes Schlee

Martin Weckerle

Georg Schmidt

Maik Riegler

Frank Oehler

Dirk Neumann

Christoph Kutscher

Johannes Fuchs

The present disclosure teaches a method and a system () for relaying telecommunication signals (S, S), wherein the telecommunication signals (S, S) have a plurality of carriers (). The system () comprises a central hub () connectable to one or more base stations (); a plurality of remote units (--N;----) for relaying at least one of the plurality of carriers () in the telecommunication signals (SS) supplied by the central hub (). Power of the plurality of remote units (--N;----) is adjustable such that first ones of the plurality of remote units (--N;----) can be switched off and second ones of the plurality remote units (--N;----) can have adjusted power levels to compensate for the switch off of the first ones of the plurality of remote units (--N;----).

Method and system for relaying telecommunications signals with efficient joint capacity

The present invention describes a method and system for relaying telecommunication signals. The system comprises: a central hub connectable to one or more base stations; a plurality of remote units for relaying the telecommunication signals; and a plurality of expansion units digitally connected to the central hub and connectable to the plurality of remote units. At least one of the plurality of expansion units is provided with a plurality of coverage area modules, wherein one or more of the plurality of remote units is connected to a selected one of the plurality of coverage area modules, the selected one of the coverage area modules being adapted to relay the same signals to the connected one or more of the plurality of remote units.

Method and system for relaying telecommunications signals

A distribution system () for relaying telecommunication signals () is disclosed. The distribution system () comprises a central hub () connectable to one or more base stations (), a plurality of remote units (--) for relaying a telecommunication signals () supplied by the central hub (), whereby the remote units (--) are provided with a plurality of uplinks (--) and a plurality of downlinks (--), and a detector () for detecting an activity on the uplink. The distribution system () is adapted to independently switch at least one of the plurality of downlinks (--), while the plurality of uplinks (--) remains active.

Distribution system and method for managing power consumption of such a distribution system

The present disclosure relates to a radio system (), a base band unit () and a method () for relaying radio signals in a cell () of a mobile network. The radio signals are relayed according to a service criterion (). With the present invention the radio signals are grouped into a grouped payload signal (---M) and a grouped receive signal (---M) according to the service criterion (). The grouped payload signal (--M) and the grouped receive signal (---M) are associated with a beam forming vector (---M). The grouping according to the present disclosure helps to improve a quality of service provided to an individual user of the mobile network. The associated beam forming vector (---M) may be provided and adjusted at a digital radio interface DRI (). Furthermore the present disclosure provides various computer programme product implementing the various aspects.

User group specific beam forming in a mobile network

The present disclosure provides an antenna array () for relaying radio signals into a cell () of a communication network (). The antenna array () comprises a plurality of uplink beam forming vectors () selectable as an uplink beam shape for an uplink relaying and a plurality of downlink beam forming vectors () selectable as a down link beam shape for a down link relaying. The plurality of uplink beam forming vectors () and/or the plurality of the downlink beam forming vectors () may be adjusted at a digital radio interface and forwarded from the digital radio interface to the antenna array (). An individual one () of the plurality of uplink beam forming vectors () and an individual one () of the plurality of downlink beam forming vectors () are independently selectable using a local knowledge () about the cell. The present disclosure further provides a communication network () comprising a plurality of the antenna arrays (---N) for relaying radio signals into the communication network (). The communication network () further comprises a network playing system () adapted to independently select an individual one (---N) of the plurality of uplink beam forming vectors (---N) and an individual one (---N) of the plurality of downlink beam forming vectors (---N) for at least one of the antenna arrays (---N) using a local knowledge () about the communication network (). The present disclosure further provides a method for relaying radio signals into a cell () of the communication network (), a method () for planning the communication network (), and a method () for relaying radio signals into cells (---N) of the communication network (); all methods () using a knowledge () about the communications network ().

Antenna array, network planning system, communication network and method for relaying radio signals with independently configurable beam pattern shapes using a local knowledge

The present disclosure relates to an active antenna array for a mobile communications network. The active antenna comprises a base band unit coupled to a base station, a plurality of transceiver units and at least one link. The plurality of transceiver units is terminated by at least one antenna element. The at least one link couples individual ones of the plurality of transceiver units to the base band unit. The at least one link is a digital link and is adapted to relay an individual transmit signal concurrently and in synchronisation with a transmit clock signal. The present disclosure further teaches a method for relaying radio signals in a mobile communications network. The present disclosure further relates to a computer program enabling a computer to manufacture the active antenna array of the present disclosure and to execute the method of relaying radio signal in a mobile communications system.

Active antenna array and method for relaying radio signals with synchronous digital data interface

A radio system and a method for relaying packetized radio signals is disclosed. The radio system and the method provide a calibration of transmit signals. Furthermore the radio system and the method provide a measurement of a transmit power level. The radio system comprises at least one transmit path, a calibration unit, a base band calibration signal generator synchronized to a synchronization unit, at the least one link and a power sensor. A portion of a selected one of coupled transmit signals is forwarded to a power sensor for measuring a power level, wherein the calibration unit is adapted to update a transmit power level of the at least one transmit path in response to the transmit power level of the selected one of the coupled transmit signals.

Absolute timing and Tx power calibration of the Tx path in a distributed system

A method for crest factor reduction of a multi-carrier signal is disclosed. The multi-carrier signal comprises a plurality of single-carrier signals, each single-carrier signal having signal-specific spectral properties. The method comprises identifying a peak in the multi-carrier signal and a time of occurrence of the peak and generating a plurality of cancellation pulses depending on the time of occurrence of the peak. A particular cancellation pulse of the plurality of cancellation pulses is associated with a particular single-carrier signal and cancellation pulse-specific spectral properties of the particular cancellation pulse substantially match the signal-specific spectral properties of the associated particular single-carrier signal. The method further comprises combining the plurality of cancellation pulses to form a combined cancellation pulse and applying the combined cancellation pulse to the multi-carrier signal to reduce the peak. A corresponding circuit and corresponding computer program products useable during manufacture and operation are also disclosed.

Crest factor reduction for a multicarrier-signal with spectrally shaped single-carrier cancelation pulses

The present disclosure teaches an active antenna array for a mobile communications network. The active antenna array comprises a base band unit, a plurality of transceiver units terminated by at least one antenna element; and at least one link. The link couples the individual ones of the plurality of transceiver units to the base band unit. The link is a digital link and is adapted to relay a payload signal at a selectable payload rate. The digital link is further adapted to relay a timing signal at a fixed timing rate, when the timing signal is embedded in the payload at a selectable payload rate. The present disclosure further teaches a method for relaying radio signals and a computer program for manufacturing the active antenna array and for executing the method.

Active antenna array and method for relaying radio signals

A method for crest factor reduction of a multi-carrier signal is disclosed. The method comprises determining a plurality of signal values of a plurality of single-carrier signals prior to combining the plurality of single-carrier signals to form the multi-carrier signal. The method further comprises performing a joint potential peak detection on the plurality of signal values, producing a temporal position of a possible peak in the multi-carrier signal, generating a plurality of cancellation pulses, and injecting the plurality of cancellation pulses to the plurality of single-carrier signals at temporal injection positions which correspond to the temporal position of the possible peak in the multi-carrier signal. The single-carrier signals are then combined to form a crest factor reduced multi-carrier signal. A corresponding circuit and corresponding computer program product useable during manufacture and operation are also disclosed.

Crest factor reduction method and circuit for a multi-carrier signal

The disclosure relates to an active antenna array for a mobile communication system which comprises a plurality of receive paths, a control unit for generating a sounding signal, and a coupler for coupling the sounding signal into at least one of a plurality of receive paths. A switch is used to switch the output of one the plurality of receive paths between one of a receiver and a calibration unit. The disclosure also provides a method for the calibration of the active antenna array which comprises generating an initial sounding signal, coupling the initial sounding signal into at least one of a plurality of receive paths to generate an adjusted sounding signal, comparing the adjusted sounding signal with an initial sounding signal and then generating calibration parameters.

Active antenna array and method for calibration of the active antenna array

Transmitter comprising a delta-sigma modulator (DSM), a sample rate converter (SRC) situated downstream of the delta-sigma modulator with respect to a direction of transmission signal flow, and a switching amplifier (SA) situated downstream of the sample rate converter (SRC) with respect to the direction of transmission signal flow. The invention as defined above allows for a decoupling of the clock frequency of the delta-sigma modulator (DSM) and the carrier frequency, for example in radio frequency (RF) signal generation applications using delta-sigma modulators. With the invention described herein it is possible to design the delta-sigma modulator independently of the carrier frequency.

Sample rate conversion in delta-sigma modulators

An antenna array () for the transmission of signals () is disclosed. The antenna array () comprises: a plurality of transmission paths (---K) for transmitting a plurality of wanted signals () and at least one calibration signal generator (--,-K) for the generation of at least one calibration signal (). A plurality of calibration signal mixers (---K) mixes the at least one calibration signal () with the plurality of wanted signals () to produce a plurality of transmission signals (). A path sum signal device () sum the plurality of transmission signals () to produce a summed transmission signal (); and an interference estimator () accepts the at least one calibration signal () and generates an estimated interference signal (). An estimation signal mixer () subtracts from the summed transmission signal () the estimated interference signal () to produce a difference signal (); and a on signal detection unit () for comparing the signal () with the at least one calibration signal ().

Growing community of inventors

Ulm, Germany

Johannes Schlee