Abstract: The invention concerns a method for performing adaptive subcarrier allocation to a mobile terminal (T1-T4) for OFDM or FDM transmission in a multi cell network (CN), whereby transmit powers of base stations (BS1-BS8) are estimated, channel transfer functions are calculated based on measurements in the mobile terminal (T1-T4) of pilots transmitted from base stations (BS1-BS8), the transmit powers are weighted with the channel transfer functions, a signal power and an interference power received in the mobile terminal (T1-T4) are estimated based on said weighted transmit powers, a signal to interference ratio is estimated based on the estimated signal and interference power received in the mobile terminal (T1-T4), and the adaptive subcarrier allocation is based on the signal to interference ratio of the subcarriers experienced by the mobile terminal (T1-T4), a base station (BS1-BS8), a mobile terminal (T1-T4) and a multi cell network (CN) therefor.

Abstract: The invention concerns a method for performing adaptive subcarrier allocation to a mobile terminal (T1-T4) for OFDM or FDM transmission in a multi cell network (CN), whereby transmit powers of base stations (BS1-BS8) are estimated, channel transfer functions are calculated based on measurements in the mobile terminal (T1-T4) of pilots transmitted from base stations (BS1-BS8), the transmit powers are weighted with the channel transfer functions, a signal power and an interference power received in the mobile terminal (T1-T4) are estimated based on said weighted transmit powers, a signal to interference ratio is estimated based on the estimated signal and interference power received in the mobile terminal (T1-T4), and the adaptive subcarrier allocation is based on the signal to interference ratio of the subcarriers experienced by the mobile terminal (T1-T4), a base station (BS1-BS8), a mobile terminal (T1-T4) and a multi cell network (CN) therefor.

Abstract: The invention concerns a method for coordination of the interference in the uplink between cells (B1,B2) of a single frequency network with the frequency band used for uplink being subdivided into at least two subsets(F1 F2. . . FR), whereby a resource related to a dedicated subset is allocated to a mobile terminal (T1) located in a first cell (B1) of said cells in the border area to a neighbor cell (B2-B4), the based station of the cell (B2) with the highest interference damage caused by the mobile terminal (T1) accepts a high interference level on said dedicated subset dependent on network criteria, and the usage of said dedicated subset in the cell (B2) with the highest interference damage caused by the mobile terminal (T1) is restricted under observation of the interference level, a base station, a mobile terminal and a mobile network therefor.

Abstract: The invention concerns a method for OFDM data transmission in a single-frequency multi-cell mobile network from and to mobile terminals (MT) with channel estimation by means of pilots (PILOT) of a pilot subgrid in an OFDM time-frequency grid, whereby the positions of the pilot subgrids of different cells of the mobile network are randomly or pseudo-randomly distributed, a base transceiver station, a base station controller, a mobile terminal and a mobile network therefor.

Abstract: A method of performing resource allocation in OFDM transmission is disclosed. The method includes performing a partitioning of the OFDM spectrum into a number of predefined regions (Rij, R?ij) of sub-carriers (SCi) for a number of OFDM transmission cells, assigning at least one respective transmission-related characteristic to the regions of sub-carriers, and allocating the resources for communication with at least one user equipment in at least one region of sub-carriers based on the partitioning and dependent on the characteristic assigned to the regions of sub-carriers. This allows fast resource allocation with low signaling effort, as well as fast adjustment to changing system settings or changing systems conditions, while providing a possible alternative to costly handover procedures.

Abstract: The invention concerns method for scheduling of user terminals (T) to subcarriers in a multi-cell or multi-sector network using FDM transmission with interference coordination and with the frequency band used for FDM transmission being subdivided into at least two frequency subsets (F1, F2 . . . FR), whereby the data throughput of user terminals (T) is measured or modeled by means of the signal to interference ratio measured by said user terminals (T) dependent on the frequency subset (F1, F2 . . . FR), subcarriers are allocated preferably to user terminals (T) with a high signal to interference ratio on said subcarriers, and subcarriers are allocated in clusters to the user terminals (T), whereby all clusters offer the same data throughput for the respective user terminal (T), a base station (BS), a user terminal (T) and a network therefor.

Abstract: A method for terminal-assisted interference control in a mobile communication system employing multi-carrier techniques such as OFDM, the mobile communication system comprising a network with a plurality of base stations controlled by a central entity, and the base stations having means for communication with user terminals located inside their cell service area, wherein the central entity schedules time-frequency groups available, for data communication purposes between the terminals and the base station, for the base stations under its control and the terminals involved in the scheduling process, each time interval.

Abstract: The present invention relates to a method of coding a signal, in particular an audio or speech signal, wherein a codebook comprising k code vectors is provided for vector quantization of a signal vector representing a set of signal values of said signal(s), and wherein an optimal code vector of said codebook is determined by performing a codebook search. Parallelism is employed to accelerate the coding procedure. In particular, the codebook search is highly parallelised.

Abstract: A method for allocating subcarrier frequencies to a user terminal in a wireless system using multi-carrier modulation such as OFDM in which a network is adapted to communicate with a plurality of user terminals for data transmission, signaling control and link adaptation via an air interface downlink channel and feedback channel, and where a number of terminals estimate their own specific channel transfer function, wherein upon terminal channel transfer function estimation over a certain period of time, a set of terminals report to the network, over their feedback channel, information about their measured channel transfer function and interference noise estimate and the network, according to this information, allocates the subcarrier frequencies of at least one first frequency subset to the set of terminals which sent said information following a frequency-selective allocation scheme and allocates the subcarrier frequencies of at least one second frequency subset to the rest of the terminals according to a fr

Abstract: The invention concerns a method for radio communication between a base station (BS) and a user terminal (UE) using transmission on component carriers, wherein at least one primary component carrier (DLp) is assigned to the user terminal (UE) for communication with the base station (BS), and based on a transmission of control information to the user terminal (UE) on said at least one primary component carrier (DLp), the user terminal (UE) is supported to communicate on at least one auxiliary component carrier (DL1-DLn, UL1-ULm) with the base station (BS), a base station, a user terminal and a communication network therefor.

Abstract: In a method and apparatus to detect position changes of an implant x-ray detectable markers are arranged in the environment of the implant, and 2D x-ray exposures are obtained at temporal intervals of a region containing the implant in which a distribution of the markers as well as of marked points of the implant are visible in each 2D x-ray exposure. A first of the 2D x-ray exposures is obtained at a first point in time from one projection direction, and a second of the 2D x-ray exposures is obtained at a second point in time from another projection direction. The distribution of the markers and marked points is determined in the first and second 2D x-ray exposure by an evaluation device, and from the distributions a degree of probability is calculated that the distribution of the first 2D x-ray exposure and the distribution of the second 2D x-ray exposure are projections of the same three-dimensional distribution of markers and marked points.

Abstract: A method for inter-cell interference coordination with power planning in a radio communication system employing multi-carrier techniques such as OFDM for the air interface communication between a network and a plurality of user terminals, the network comprising a plurality of base stations having means for communication with the user terminals located inside their cell service area, the cells arranged following an adjacent cell pattern, where neighbor cells do not have the same number and cells with the same number are separated by at least one cell in-between, for resource planning purposes, each cell having an inner cell region and a border cell region in which inter-cell interference is affecting the quality of service received by a user terminal.

Abstract: The invention concerns a method for distributing data on an OFDM time-frequency grid for data transmission from and to mobile terminals in a mobile network allowing for coordination of interferences between different cells of the mobile network and adaptive subcarrier frequency allocation to mobile terminals, whereby subcarrier frequencies of the OFDM time-frequency grid are gathered in frequency patterns, the frequency patterns are constructed to accommodate the use of pilot subgrids, a set of frequency patterns is changed in a pilot compatible manner between frequency diverse and frequency selective frequency patterns, and said frequency patterns are allocated to mobile terminals for data transmission , a base transceiver station, a base station controller and a mobile network therefor.

Abstract: The invention concerns a method for distributing data on an OFDM time-frequency grid for data transmission from and to mobile terminals in a mobile network accommodating the use of pilot subgrids suitable for channel estimation, whereby said OFDM time-frequency grid comprises different frequency patterns, subcarrier frequencies of said different frequency patterns are interleaved, in at least one interleaving interval, as many cyclic shifts of the respective part of the frequency patterns are performed, rotating the allocation of the subcarrier frequencies to the different frequency patterns, as must be performed so that the distribution of the pilot subgrids over the frequency patterns leads for each pilot subgrid to no more than a maximum defined number of pilots that lie within each frequency pattern, a base transceiver station, a base station controller and a mobile network therefor.

Abstract: The invention provides a novel way of handling electric or electromagnetic signals during magnetic resonance (MR) measurements. Non-MR data signals such as EPH signals (e.g. EEG, ECG, blood pressure, respiration) or subject responses (e.g. keystrokes, joystick movements) originating in the MR suite is recorded while performing magnetic resonance imaging or spectroscopy. Relatively simple, possibly battery driven hardware is used to transform the non-MR signals into radio waves detectable by the MR apparatus. The electrical signals are in this way encoded as artifacts appearing in the MR images or spectra outside the region of interest, and the encoded signals can subsequently be reconstructed from the signal recorded by the scanner If oversampling is employed, artifacts can be avoided altogether. The method inherently provides superior synchronisation between the sampling of non-MR data signals and the MR sequence.

Abstract: Methods and apparatus are disclosed for processing Session Initiation Protocol (SIP) INVITE messages that include an early media capability indicator. The early media capability indicator provides information regarding the early media handling capabilities of the device originating the message, and is used by various network nodes that process the INVITE message to determine if, and under what circumstances, early media sessions may be established with the originating communication device. In an exemplary method, a SIP INVITE message is received from a SIP User Agent Client for a first communication device, the SIP INVITE message comprising an early media capability indicator. The exemplary method further comprises forwarding the SIP INVITE message to one or more remote communication devices, and selectively allowing one or more media sessions between the first communication device and the one or more remote communication devices, based on the early media capability indicator.

Abstract: A circuit is provided for charging and discharging a plurality of capacitive actuators, which can be produced with little component outlay and minimizes power loss. The circuit has a charge capacitor, which is charged to a charge voltage predefined in relation to a reference potential, and charge circuits for charging one of the capacitive actuators in each instance which are connected parallel to the charge capacitor and in each of which one of the capacitive actuators is disposed in a series circuit with a choke and a selector/charge switch. The charge circuits have a common charge circuit section containing the choke. Discharge circuits are provided for discharging one of the capacitive actuators in each instance, which are connected parallel to the series circuits formed by the choke and the capacitive actuators and a discharge switch. The discharge circuits having a common discharge circuit section containing the discharge switch.

Abstract: A method of performing resource allocation in OFDM transmission, comprising the steps of: performing a partitioning of the OFDM spectrum into a number of predefined regions (Rij, R?ij) of sub-carriers (SCi) for a number of OFDM transmission cells; assigning at least one respective transmission-related characteristic to said regions of sub-carriers; and allocating said resources for communication with at least one user equipment in at least one region of sub-carriers based on said partitioning and dependent on said characteristic assigned to said regions of sub-carriers. This allows fast resource allocation with low signalling effort as well as fast adjustment to changing system settings or changing systems conditions while providing a possible alternative to costly handover procedures.

Abstract: The invention concerns method for scheduling of user terminals (T) to subcarriers in a multi-cell or multi-sector network using FDM transmission with interference coordination and with the frequency band used for FDM transmission being subdivided into at least two frequency subsets (F1, F2 . . . FR), whereby the data throughput of user terminals (T) is measured or modeled by means of the signal to interference ratio measured by said user terminals (T) dependent on the frequency subset (F1, F2 . . . FR), subcarriers are allocated preferably to user terminals (T) with a high signal to interference ratio on said subcarriers, and subcarriers are allocated in clusters to the user terminals (T), whereby all clusters offer the same data throughput for the respective user terminal (T), a base station (BS), a user terminal (T) and a network therefor.

Abstract: The invention concerns a method for performing adaptive subcarrier allocation to a mobile terminal (T1-T4) for OFDM or FDM transmission in a multi cell network (CN), whereby transmit powers of base stations (BS1-BS8) are estimated, channel transfer functions are calculated based on measurements in the mobile terminal (T1-T4) of pilots transmitted from base stations (BS1-BS8), the transmit powers are weighted with the channel transfer functions, a signal power and an interference power received in the mobile terminal (T1-T4) are estimated based on said weighted transmit powers, a signal to interference ratio is estimated based on the estimated signal and interference power received in the mobile terminal (T1-T4), and the adaptive subcarrier allocation is based on the signal to interference ratio of the subcarriers experienced by the mobile terminal (T1-T4), a base station (BS1-BS8), a mobile terminal (T1-T4) and a multi cell network (CN) therefor.