Telefonaktiebolaget Lm Ericsson (publ)

Unwired Planet, LLC

Unwired Planet International Limited

Gunnar Peters

Robert Baldemair

Stefan Parkvall

Henrik Sahlin

Carmela Cozzo

Yi-Pin Eric Wang

Torbjörn Wigren

Gregory Edward Bottomley

Jacobus Cornelis Haartsen

Ying Sun

Christian Skärby

Krister Norlund

Anders Furuskär

Mats Fredrik Sågfors

Eva Englund

Jacob Österling

Fredrik Huss

Peter Moberg

Anders Johansson

Franz Heiser

Jacob Kristian Osterling

Torbjorn K Wigren

Thomas Östman

Leif T Ostman

Erik Nordhamn

Georg Mesko

Björn Forsberg

Kelvin Maliti

Girum Alebachew

Kelvin Malati

Mats Sågfors

Jacob ÖSterling

The present invention relates to a receiver comprising a fast power control unit, said fast power control unit being arranged to continuously control a quality measure of a radio channel. The receiver is characterized in that the quality measure is a modified Signal to Interference plus noise ratio (SIR) in which the influence from self interference has been removed. The invention further relates to a method for continuously controlling a quality measure of a radio channel, wherein a modified Signal to Interference plus noise ratio (SIR) is continuously determined in which the influence from self interference has been removed.

Modified SIR values for fast power control

There is provided a method of operating a communication system, the communication system comprising a user equipment and a receiver, the method in the system comprising generating a random access transmission in a user equipment and transmitting the random access transmission to the receiver in the communication system, the random access transmission including a preamble; receiving the random access transmission from the user equipment at the receiver; processing the random access transmission in the frequency domain to detect the preamble. In preferred embodiments of the invention, the preamble has a cyclic prefix, or is preceded by a plurality of zero-valued symbols.

Method and arrangement in a telecommunication system

The present invention relates to a method and arrangement for reducing interference in a cellular communication network. A radio base station of the network is configured to serve at least a first cell, where interference is reduced by selecting a link adaptation scheme for a UE in the first cell, The arrangement comprises means for receiving measurements on estimated channel quality, means for estimating channel quality for a future transmission by adjusting the received measurements on estimated channel quality based on knowledge of future UE scheduling in at least the first cell, and means for selecting the link adaptation scheme comprising a transmit power level based on the estimated channel quality for the future transmission.

Method and arrangement for reducing interference in a wireless communication network

Embodiments disclose a method in a first communication device in a radio telecommunications network for transmitting a control message comprising communication configuration information to a second communication device within the radio telecommunications network. The first communication device determines the communication configuration information of the control message and maps the control message to a plurality of control channel element groups for the second communication device. The first communication device then transmits the control message to the second communication device over the plurality of control channel element groups within a single transmission time interval on a radio control channel.

Methods and devices for transmitting a control message

A node of a radio access network includes a transceiver and a radio resource control unit. The transceiver is configured to facilitate communication with plural wireless terminals over a radio interface including transmissions on an uplink from the wireless terminals to the node and transmissions on a downlink from the node to the wireless terminals. The radio resource control unit configured to perform radio resource control functionality including layer three (L3) signaling between the node and the wireless terminals. The radio resource control unit includes an uplink scheduler configured to predict transmission of an uplink L3 message from the wireless terminals to the node and, for a particular wireless terminal, to generate, for transmission on the downlink, a grant message which in accordance with the prediction prioritizes a predicted L3 message of the particular wireless terminal relative to messages of others of the plural wireless terminals.

Network driven L3 control signalling prioritization

In a wireless communication system, the uplink transmission of measurement reports may be scheduled based on an estimated time of when a measurement report will be ready for transmission. The estimated time may be calculated at a base station or user equipment.

Scheduling of uplink measurement reports

Method for processing the random access transmission in the frequency domain

In a method for improved turbo decoding in a wireless communication system, jointly allocating (S) a predetermined maximum number of decoding iterations to a batch of received decoding jobs; and consecutively performing decoding iterations (S) adaptively for each job in the batch until a convergence criteria is reached for each job in the batch, or until the predetermined maximum number of iterations for the batch is reached.

Method and arrangement for improved turbo decoding

Signal impairment correlations for multiple signals in a received multipath signal are constructed by fitting parametric models associated with each high-data-rate signal in the multipath against measured impairment correlations. The estimated model fitting parameters are applied to form impairment correlation estimates for all signals. The models comprise a separate impairment covariance matrix scaled by a model fitting parameter for each high-data-rate signal and a noise covariance matrix scaled by a noise element model fitting parameter. The model fitting parameters may be estimated by a least-squares formulation and applied to form impairment correlation estimates for all signals of interest. The resulting impairment correlation estimates may be provided to G-RAKE receivers or joint scaling demodulators to demodulate the signals while suppressing interference from the high-data-rate signals.

Method and apparatus for shared parameter estimation in a generalized rake receiver

In a hardware accelerator for preamble detection of a Physical Random Access Channel (PRACH) in a CDMA based communication system, buffering means stores input samples received at an antenna at a first rate, addressing means read a predetermined consecutive number of the input samples in parallel at a second different rate. The hardware accelerator is further partitioned into a reusable unit providing code correlation, and a preamble detection dedicated unit providing signature code despreading. The reusable unit comprises means for correlating at least a subset of the previously read input samples with a predetermined code to provide a correlation output for a number of time lags. The preamble detection dedicated unit comprises means for preamble detection configured for providing Hadamard Transformation of the correlation output to enable preamble detection, and all means are arranged on a single hardware chip to enable high-speed data transmissions between the respective means.

Method and arrangement for preamble detection

An inherent non-observability of the thermal noise power level is circumvented by estimating an upper limit of the thermal noise power level by time evaluations. An instantaneous total received wideband power is measured in a receiver. Preferably, also an instantaneous sum of powers of all links used in the same cell is provided. A quantity (P'), preferably the difference between the instantaneous total received wideband power and the instantaneous sum of powers of all links used in the same cell, is followed () during a time period (T). A minimum value (P) of that quantity is then used as an estimate of the thermal noise power level upper limit. Preferably, the time period is configured as a sliding window. An improved determination of noise rise can then be calculated and used for controlling traffic within the cell.

Methods and devices for uplink load estimation

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Stockholm, Sweden

Gunnar Peters