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Karl Torbjorn Wigren, Uppsala SE

Karl Torbjorn Wigren, Uppsala SE

Patent application numberDescriptionPublished
20080218411Assisted Satellite-Based Positioning - One upper and one lower bound on the search window for the code phase of a signal transmitted from a specific satellite (09-11-2008
20080227400Methods And Arrangements For Noise Rise Estimation - A received total wideband power (09-18-2008
20080254788Complexity Reduction In Power Estimation - A signal-power related quantity is estimated by repeating a processing step, where measured values of instantaneous signal powers are processed. At each relevant part step of the processing and for each relevant matrix (10-16-2008
20080316091Accuracy Assessment in Assisted Gps Positioning - Reliable and efficient search windows are provided by allowing the adaptation of the code search window to be dependent on inaccuracy measures of relations between a cellular frame time and a satellite reference time. This inaccuracy is calculated in a positioning node (12-25-2008
20090204807ABSTRACTION FUNCTION FOR MOBILE HANDSETS - Handset, computer software and method for protecting sensitive network information, available in the handset, from disclosure to an unauthorized server, by using an abstraction function module, the handset being connected to a network. The method includes receiving at the abstraction function module an encoding key from an abstraction server; receiving at the abstraction function module a request from a client or application for providing the sensitive network information from a control plane module of the handset, wherein the client or application resides in a user plane module, which is different from the control plane module, the sensitive network information is stored in the control plane module of the handset, and both the control plane module and the user plane module reside in the handset; retrieving by the abstraction function module the requested sensitive network information from the control plane module; encrypting, by the abstraction function module, the retrieved sensitive network information based on the received encoding key; and providing the encrypted sensitive network information to the client or application in the user plane module.08-13-2009
20100009683METHODS AND SYSTEMS FOR CELL RE-PLANNING TO OBSCURE NETWORK TOPOLOGIES - Methods and systems for obscuring network topologies are described. Cell re-planning techniques can be used to modify cell identities to obscure a relationship between nodes in a communication system and their geographical location. One or more algorithms can be used to operate on, e.g., cell plan lists, cell neighbor lists and/or cell identities.01-14-2010
20100165860Load Estimation in Receiver Diversity Telecommunication Systems - Methods and arrangements for providing load reference data in a CDMA wireless communication system with receiver diversity are presented. The method comprises measuring (07-01-2010
20100208770METHOD AND ARRANGEMENTS FOR NOISE RISE ESTIMATION - An arrangement (08-19-2010
20100315947LOAD ESTIMATION USING SCHEDULED UPLINK POWER - A method for providing load reference data in a CDMA system comprises measuring of received total wideband power and of received scheduled enhanced uplink power. State variables are selected corresponding to cell power quantities and measurement functions are selected corresponding to the measured received total wideband power and the measured received scheduled enhanced uplink power. A probability distribution for a first power quantity—related to the selected state variables—is estimated. A conditional probability distribution of a noise floor measure is computed based on the estimated probability distribution for the first power quantity. Load reference data is provided based on the computed conditional probability distribution of the noise floor measure. In a preferred embodiment, the first power quantity is a measure of the difference between received total wideband power and received scheduled enhanced uplink power. The load reference data can be used in e.g. enhanced uplink scheduling or admission control.12-16-2010
20110009156WIRELESS COMMUNICATION POWER CONTROL - For power control in a wireless communication system, a node comprises means for obtaining power of signals received over a wireless signal channel and a power control signal unit. The power control signal unit provides power control signals intended for the power control over the channel. A warper unit warps the power control signals by a first filter. A quantizer quantizes the warped power control signals, which are transferred to another node in the wireless communication system. The receiving node comprises a dewarper, dewarping the received signals by a second filter. The power control of the wireless signal channel is performed based on the dewarped power control signal. The filters are linear filters arranged for reducing an influence of quantization. The second filter is an inverse filter with respect to the first filter. The filters are preferably adapted by adaptors.01-13-2011

Patent applications by Karl Torbjorn Wigren, Uppsala SE