Patent application number | Description | Published |
20090190679 | METHOD FOR DETERMINING SYSTEM INFORMATION, AND DECODER, TERMINAL, AND COMPUTER PROGRAM - A method for a terminal of a cellular telecommunication system for determining system information about a node of a network of the telecommunication system is disclosed. The telecommunication system enables determination of the system information by the terminal from information transmitted from at least one cell operated by the node, where the telecommunication system employs Orthogonal Frequency Division Multiple Access. The method comprises receiving a transmission signal, comprising reference symbols and synchronisation symbols, from a network node of the at least one cell; estimating, for each transmit antenna of the network node, a preliminary channel estimate based on the received reference symbols; and estimating a pre-coding vector, being associated with transmission by at least one transmit antenna of the network node of the at least one cell, for the synchronisation symbols. Corresponding features for computer program, decoder and terminal are also disclosed. | 07-30-2009 |
20090322509 | Assignment of Alarms - There is provided a method for monitoring a building control device, the method comprising associating the building control device with an event; storing the event and at least one parameter of the building control device in a database, wherein the database is operatively connected to a plurality of operator devices, and wherein the at least one parameter at least pertains to defining the event to be one from the group of unassigned, pending, or assigned by the plurality of operator devices; traversing, by at least a first of the plurality of operator devices, the database subject to the at least one parameter. | 12-31-2009 |
20100067627 | Maximum A Posteriori Interference Estimation in a Wireless Communication System - Methods and apparatus are disclosed for estimating inter-cell interference levels for resource elements of a received Orthogonal Frequency-Division Multiplexing (OFDM) signal. In an exemplary method in a wireless receiver, a reference symbol interference levels is measured for each of a plurality of reference symbols in a received OFDM signal, and interference scaling factors are mapped to each of a plurality of resource elements of the received OFDM signal. Each interference scaling factor reflects the probability that the corresponding resource element or group of resource elements is subject to interference from an interfering OFDM signal. Interference levels for each of the resource elements are then estimated as a function of the measured reference symbol interference levels and the interference scaling factors. | 03-18-2010 |
20100128827 | MMSE Demodulation in a Multi-User MIMO System - A method and apparatus is provided for demodulating a desired data stream in a MU-MIMO communication system where only the precoder for the desired data stream is known a priori. The receiving terminal according to various embodiments of the present invention estimates the precoder for one or more interfering data streams. The receiving terminal can then use the known precoder for the desired data stream and the estimated precoders for the interfering data streams to perform MMSE demodulation. | 05-27-2010 |
20100165847 | Method and Apparatus for Robust Transmission of Control Information in a Wireless Communication Network - A base station includes transmitter and associated processing circuits. The transmitter circuits are configured to transmit control information and data traffic to mobile terminals in repeating transmission intervals, each interval having defined control and data portions. The processing circuits are configured to dynamically determine that the control portion has insufficient resources for transmitting control information to one or more of the mobile terminals, and, in response, at least temporarily transmit control information in the data portion, rather than in the control portion, for a selected one or more of the mobile terminals. Correspondingly, a mobile terminal is configured to selectively search for and decode control information in the data portion of one or more transmission intervals, rather than in the control portion. | 07-01-2010 |
20100329217 | CHANNEL ESTIMATION USING PRECODED REFERENCE SYMBOLS - A method for a terminal of a cellular telecommunication system, wherein the method comprises receiving a transmission signal, comprising reference symbols and synchronisation symbols, from the network node of the at least one cell; determining at least one pre-coding vector, of which one pre-coding vector being associated with transmission by an at least one transmit antenna of the network node of the at least one cell, for the transmission signal; and estimating, for each of the at least one pre-coding vector, a channel estimate for all sub-carriers of the received transmission signal from the received reference symbols and a reference symbol channel model defined for reference symbols of the transmission signal, and from the synchronisation symbols, the at least one pre-coding vector and a synchronisation symbol channel model defined for synchronisation symbols of the transmission signal. | 12-30-2010 |
20110305268 | Method and System and Device for CQI Estimation Disturbance Cancellation - The current invention relates to a method of determining a quality of a received signal, wherein the method comprises receiving a signal comprising a first part and a second part and wherein at least the second part of the received signal comprises a scrambling sequence period; and determining a first noise-and-interference power of the first part of the received signal by removing a second noise-and-interference power of the second part of the signal, wherein the scrambling sequence period is utilized in the removal. The invention further relates to a corresponding device and system. Thereby, the invention is able to, among other things, reduce neighbor cell reference symbol interference in a dense network. | 12-15-2011 |
20120021693 | Method and Receiver for Estimating and Reporting a Channel Quality Measure - A method of estimating and reporting, for a receiver ( | 01-26-2012 |
20120027048 | Method and Arrangement of Delay Spread Compensation - A method of delay spread compensation, suitable for use in a communication device a having plurality of receiver antennas, is disclosed. The method comprises receiving a plurality of signals, each via a respective antenna, wherein each signal comprises a signal component corresponding to a transmitted signal, and wherein each received signal experiences a respective channel impulse response having a corresponding delay spread; determining estimates of each of the channel impulse responses; calculating post-coding characteristics based on the estimates of the channel impulse responses; and post-coding the plurality of received signals using the post-coding characteristics to produce at least a first delay spread compensated signal. Corresponding computer program product, processing arrangement and communication device are also disclosed. | 02-02-2012 |
20120300699 | METHOD AND ARRANGEMENT OF PROCESSING A PACKET OF A HARQ SYSTEM - A method for an electronic receiver of processing a packet of a hybrid automatic repeat request (HARQ) system is disclosed. The method comprises receiving a first transmission of the packet, wherein the first transmission comprises a first plurality of soft symbol values and determining whether the first plurality of soft symbol values meets a stop criterion. If it is determined that the first plurality of soft symbol values does not meet the stop criterion, a subject of the first plurality of soft symbol values is determined, wherein the subset comprises a number of soft symbol values of the first plurality of soft symbol values, the number being greater than zero and less than the first plurality. The subset of the first plurality of soft symbol values is stored in a HARQ buffer. A second plurality of soft symbol values, comprised in a second transmission of the packet received by the electronic receiver, is combined with the stored subset of the first plurality of soft symbol values to produce a third plurality of combined soft symbol values. Corresponding arrangement, receiver, device, and computer program product are also disclosed. | 11-29-2012 |
20130028354 | Detecting a Transmitted OFDM Signal in a Receiver Having at Least Two Receiver Branches - A transmitted OFDM signal is detected in a receiver of a wireless communication system. The receiver has at least two receiver branches, each comprising an antenna, a front end receiver, a Discrete Fourier Transform unit, and a channel estimator. The receiver further comprises a detector for detecting received data symbols. The method comprises the steps of determining a system bandwidth associated with the transmitted signal; comparing the determined system bandwidth with a predetermined value; determining, if the system bandwidth is lower than the predetermined value, channel estimates separately for each branch, and detecting received data symbols from the received signals and corresponding channel estimates; and calculating, if the system bandwidth is higher than the predetermined value, a weighted sum of signals from each branch, determining a combined channel estimate, and detecting received data symbols from the weighted sum and the combined channel estimate. | 01-31-2013 |
20130231104 | Technique for Managing Measurements for Multiple Subscriptions in a Mobile Terminal - A technique for managing measurements for at least two subscriptions in a mobile terminal is described. A method implementation of this technique performed in the mobile terminal comprises the steps of determining a common carrier set being an intersection between the first carrier set associated with a first subscription and the second carrier set associated with at least one second subscription, performing a first measurement on the first carrier set, and the second measurement on the second carrier set excluding the common carrier set, and mapping results associated with the first measurement of the first subscription relating to the common carrier set to the at least one second subscription. | 09-05-2013 |
20140004842 | Technique for Managing Activity States for Multiple Subscriptions in a Terminal Device | 01-02-2014 |
20140046459 | Achieving Best Effort Performance with Interfering Communications System Equipment - Primary and secondary apparatuses avoid concurrent performance of activities, wherein the secondary apparatus has a best and possibly different worst case minimum amounts of time required to perform activity. The primary apparatus ascertains a first future moment when it will become inactive and ascertains whether its upcoming period of inactivity will not be less than the secondary apparatus' best case minimum amount of time required to perform activity. If not, the primary apparatus asserts, in advance of the first future moment, an inactivity indicator signal indicating its upcoming inactivity. The interval between assertion of the inactivity indicator signal and the first future moment is greater than or equal to a difference between the secondary apparatus' worst and best case minimum amounts of time required to perform activity. | 02-13-2014 |
20140334579 | Method and Apparatus for Soft Symbol Generation in a Communication Receiver - A simplified but accurate soft-symbol determination process represents one of the advantages provided by the example embodiments disclosed herein. In this regard, a mapping function “maps” symbol estimates to corresponding soft symbol values, which may be used in interference mitigation, joint detection processing, etc. Whether the mapping function is implemented on-the-fly as a live calculation or is embodied in a look-up table, it advantageously operates on the symbol estimates directly, rather than requiring the derivation of corresponding soft bit values or the like, and it maps each symbol estimate to its “expected value,” i.e., the weighted sum of constellation point probabilities. Moreover, the mapping function may be changed dynamically—e.g., by using different look-up tables—to account for changing reception conditions and/or different modulation schemes or other signal parameters associated with the symbols being estimated and mapped to soft symbol values. | 11-13-2014 |
20150078191 | System And Method For Providing Interference Characteristics For Interference Mitigation - According to certain embodiments, a method for providing interference characterization data by a network node includes providing telecommunications services for a first wireless device located associated with the network node. The network node identifies characteristic data associated with at least one characteristic of an interfering signal associated with a second wireless device. The characteristic data associated with the interfering signal associated with the second wireless device is transmitted to the first wireless device. The at least one characteristic may identify at least one power characteristic associated with the interfering signal. | 03-19-2015 |
20150078303 | System and Method for Providing Interference Characteristics for Interference Mitigation - According to certain embodiments, methods and systems include providing interference characterization data by a network node to a first wireless device for use in performing interference mitigation. A method for providing interference characterization data by a network node may include providing telecommunications services for a first wireless device associated with the network node. Characteristic data associated with at least one characteristic of an interfering signal associated with a second wireless device may be identified by the network node. The characteristic data associated with the interfering signal associated with the second wireless device may be transmitted to the first wireless device. The at least one characteristic may identify a resource allocation granularity configured from at least one physical resource block pair associated with the interfering signal. | 03-19-2015 |