Telefonaktiebolaget Lm Ericsson (Publ)

Mats Karlsson

Andreas Bergström

Olof Manbo

Håkan Axelsson

Spartak Gevorgian

Anders P Larsson

Mattias Nilsson

Tadeus Wolpert

Hákan Axelsson

Nils Calander

Joakim Een

Christer Thor&eacute;n

Embodiments herein include a network node and a mobile station in a wireless communication system. Embodiments also include a method in the mobile station and a method in the network node. With particular regard to the method in the network node, the method schedules wireless transmissions between the network node and the mobile station. The method comprises obtaining a multi-slot class of the mobile station and determining a downlink Temporary Block Flow configuration. Further, the method comprises assigning uplink timeslots to the mobile station and associating each assigned uplink timeslot with a priority value, based on the downlink Temporary Block Flow configuration and the multi-slot class of the mobile station.

Methods and nodes in a wireless communication system

Microwaves are generated by heterodyning the outputs of two or more optical lasers which have differing central frequencies to produce beat frequencies in the microwave range. One of the beat frequencies is used to modulate the output of at least one of the lasers so as to produce sidebands which differ from the central frequency by an integral number of the sideband frequency. Each laser is connected to one of the other lasers by a weak optical link to optically injection lock the laser to the sideband of the other laser.

Optical electromagnetic wave generator

An electric supply system comprising two or more phases (R S T ), one rectifier ( ) for each phase, the second primary terminals of said rectifiers ( ) being interconnected, also comprises an Artificial Neutral Point (ANP) creating means (A ) for creating an artificial neutral point (NA ) in the electric supply system, connected in parallel with said rectifiers. The ANP means (A ) short-circuits the zero sequence voltage component of the system but does not affect the positive and negative sequence components. The ANP means (A ) includes magnetic components of such a kind that the vector sum of the phase voltages is zero. According to a first embodiment, the ANP means (A ) comprises one transformer ( ) for each phase, the primary winding of each transformer connected to the respective phase (R S T ) in a star configuration, the secondary windings serially connected and the interconnection point of the primary windings forming an artificial neutral point.

Stable artificial neutral point in a three phase network of single phase rectifiers

In a multi-phase AC/DC converter provided with an artificial neutral point a voltage sensing circuit is provided. The voltage sensing circuit comprises three small windings connected to a first common point and to three impedances. In the circuit, the voltage between the first common point of the windings and a second common point of the impedances is measured. The voltage is indicative of the current flowing in the artificial neutral point. By using such a circuit the current sensing in the neutral point can be simplified and the multi-phase AC/DC converter made at a lower cost.

Method and an apparatus for current sensing in an AC/DC converter

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Linköping, Sweden

Mats Karlsson