Telefonaktiebolaget Lm Ericsson (publ)

Johan Axnas

Markus Ringstrom

Robert Baldemair

Stephen G Craig

Dayong Chen

Stefan G Eriksson

Sverker Magnusson

Vimar Bjork

The effects of interference between a communication system operating in a frequency area and another system sending out pulses affecting the frequency area can be handled by means of a communication unit (RBS, MT) for use in a first cellular communications system, in which at least one type of system sensitive data is transmitted at pre-determined points in time, said communications unit comprising transmitting means () arranged to transmit said system sensitive data and processing means () arranged to control the transmitting means to transmit the system sensitive data at new points in time different from the predetermined points in time, instead of at said predetermined points in time, to reduce the risk of interference from a second system operating in the same frequency range as the first cellular communications system.

Communications unit and method

Interference between a communication system operating in a frequency area and another system sending out pulses affecting the frequency area can be handled by means of a communication unit (RBS. MT) for use in a cellular communications system, said communications unit comprising detecting means () for determining the presence of at least one interfering pulse from another system affecting the signalling in the cellular communications system, and processing means () for selecting and taking appropriate action based on the detected at least one interfering pulse.

Spectrum sharing enabled by strong interfering pulse handling

A communication method for use in a first cellular communications system is proposed for minimizing the interference caused by strong interfering pulses in the same frequency band as the system or an adjacent frequency band. The method comprises the steps of Receiving an incoming signal Bandpass filtering the incoming signal to filter out a first frequency band (B) used by the communications system and forwarding the bandpass filtered signal to a receiver unit () for processing and forwarding the processed signal to a signal detector () arranged to detect the wanted signal. Redirecting a fraction of the received signal and detecting the power of the redirected fraction. Using the detected power to modify the function of the signal detector ().

Communications unit and method for detecting pulse interference

The invention involves selection of modulation scheme for a mobile unit () having access to a link quality enhancing algorithm () operable only on data modulated using a subset of the available modulation schemes. The mobile unit () performs signal quality measurements on a communications link (), over which data modulated with a first modulation scheme is communicated. A link quality measure is then determined for this first modulation. A quality enhancement due to operation of the algorithm () is also determined. This quality measure and the quality enhancement are used for generating decision information, which is reported to the network (). There the information is used for estimating link quality measure(s) of currently non-employed modulation(s) for the mobile unit (). The selection of a modulation scheme for the communications link is then performed based on the decision information and the estimated quality measure(s).

Growing community of inventors

Solna, Sweden

Johan Axnas