Patent application number | Description | Published |
20080316091 | Accuracy 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 |
20090028088 | METHOD AND ARRANGEMENTS RELATING TO SATELLITE-BASED POSITIONING - The present invention relates to methods and apparatuses as well as a measurement report signal for reporting measurements on ranging signals (RS | 01-29-2009 |
20090238086 | Rank Dependent CQI Back-Off - In a wireless communication network UE, an estimated signal to interference and noise ratio (SINR) is calculated for each potential transmission mode, and is reduced by a calculated SINR back-off value in response to errors detected in decoding data in each of a plurality of data streams. A Channel Quality Indicator CQI is then generated based on the reduced SINRs. Reducing the SINR estimates in the presence of known data errors allows a UE to more accurately track a target BLER. | 09-24-2009 |
20090238250 | REDUCED COMPLEXITY FREQUENCY BAND AND VIRTUAL ANTENNA COMBINATION (VAC) SELECTION - A downlink Channel Quality Indicator (CQI) is estimated in two steps. Initially, one or more subsets of received reference symbols are selected. If the transmitter may transmit signals in one or more of two or more frequency bands, optimal frequency bands are selected based on a first subset of reference symbols. If the transmitter may transmit using one of two or more VACs, an optimal VAC is selected based on the first or a second subset of reference symbols. An SINR is subsequently calculated for the selected frequency band and VAC combination, based on more than the subset(s) of reference symbols. | 09-24-2009 |
20090239474 | SIMPLIFIED IMPAIRMENTS MATRIX CALCULATION FOR SINR ESTIMATION - A recursive method of calculating an inverse impairments matrix is used to generate an SINR estimate, which in turn is used to generate a CQI estimate. The recursive inverse impairments matrix calculation avoids the need to perform a computationally intensive matrix inversion, allowing for faster CQI estimate generation and consuming less power. | 09-24-2009 |
20090323596 | Scheduling For Uplink And Downlink Time Of Arrival Positioning - The present invention relates to methods and arrangements for scheduling of positioning channels and traffic in order to recover a sufficiently perfect orthogonality including scheduling tasks for the downlink and uplink direction. A scheduling manager co-ordinates the scheduling and measurement timing of first and second positioning schedulers that, respectively, allocate uplink and downlink radio resources. | 12-31-2009 |
20100109952 | Transformation of positioning reporting formats - The present invention relates to a method and arrangement for achieving transformations of received positioning information according to a first reporting format to positioning information according to a second format such as to allow a seamless transformation and handling of the positioning confidence values, i.e. the probability that the terminal is actually located in the region determined by the applied positioning method. The method derives an approximation of the shape-defining parameters for the second reporting format such as to minimize a criterion function including the predefined target confidence value and determining the deviation of the confidence value for the approximated shape from the target confidence value. | 05-06-2010 |
20100173645 | Method And Arrangements In A Mobile Telecommunication Network - The present invention relates to a method and an arrangement in a mobile telecommunication network for detection of a UE transmitted signal. The arrangement comprises means for detecting the signal during the time t | 07-08-2010 |
20100178940 | METHOD AND ARRANGEMENT FOR POSITIONING IN A MOBILE TELECOMMUNICATION NETWORK - The present invention relates to a positioning node and method for determining a position of a target UE in a cellular mobile telecommunication network. The network comprises means for identifying the RBS that the target UE is connected to, whereby the location of the identified RBS is known, and means for selecting a first and a second additional UE, wherein at least one of the first and second additional UEs is connected to a RBS that is different from the RBS that the target UE is connected to. The positioning node comprises input means adapted to receive information associated with measurement of the round-trip-time between the target UE and the identified RBS, information associated with measurement of the round-trip-time between the first additional UE and the RBS it is connected to, information associated with measurement of the round-trip-time between the second additional UE and the RBS it is connected to, information associated with measurements between the target UE and a first additional UE, information associated with measurements between the target UE and a second additional UE, information associated with measurements between the first additional UE and the second additional UE, and a calculator adapted to determine the position of the target UE by using the knowledge of the identified RBS and the received information. | 07-15-2010 |
20100240392 | Angle of Arrival Downlink Signaling - A wireless communication network determines positioning data for a given mobile terminal, in response to receiving a positioning event trigger for that mobile terminal. The network sends the positioning data to the mobile terminal via control-plane signaling, for transfer by the mobile terminal to the user plane. Correspondingly, the mobile terminal receives the positioning data over the control plane, transfers it to the user plane, and transmits the positioning data or location information derived from the positioning data, via user-plane signaling. As such, network-performed positioning measurements and/or geographic coordinate data derived therefrom are transferred from the control plane, to the user plane, for flexible and transparent transmission from the mobile terminal to a given node having a user-plane connection with the mobile terminal. Such a node may be essentially any type of communication device, system, or server, internal or external to the network. | 09-23-2010 |
20100323723 | Base Station Mapping with Angle-of-Arrival and Timing Advance Measurements - Methods and apparatus for determining a position estimate for a base station transceiver node in a wireless communication system are disclosed. Angle-of-arrival and/or timing advance measurements corresponding to transmissions received from mobile stations for which geographic locations are already known are combined with known locations for the mobile stations to estimate the position of the base station receiving the transmissions. This estimated base station position may be used, for example, in subsequent positioning of mobile stations for which locations are not already known, such as mobile stations not equipped with GPS technology. The estimated base station position may also be used to update a database of base station coordinates for the wireless network. | 12-23-2010 |
20110085627 | INTERFERENCE REJECTION COMBINING FOR MULTI-USER MIMO TELECOMMUNICATIONS SYSTEM - Method and apparatus are provided for processing a received signal for making a symbol estimate of a symbol included in a signal transmitted in a Multiple-Input-Multiple-Output (MIMO) system. In an example mode, the method comprises (1) providing at least a sub-set of precoding matrices which are candidates for use in transmission of an interfering signal in a MIMO system; (2) using the received signal and plural candidates of the subset to determine corresponding plural covariance matrices, each of the plural covariance matrices being formed using a corresponding candidate precoding matrix; (3) determining which of the candidates is a trace minimizing candidate which is associated with one of the plural covariance matrices that has a minimum trace value; (4) forming a weighting matrix using the trace minimizing candidate; and (5) using the weighting matrix to make the symbol estimation. | 04-14-2011 |
20110105144 | Method, apparatus and system for defining positioning configuration in a wireless network - GPS and A-GPS based positioning methods can be used to determine UE locations to enable location based services to be provided. However, if a UE does not have such receivers or the wireless network is not able to provide assistance, these methods will not be applicable. An alternative is to use OTDOA measurements using positioning reference signals transmitted by cells of the network. By optimizing the set of cells transmitting their positioning reference signals on different positioning occasions and properly configuring the muting patterns, interference can be minimized and the UE location can be readily determined. | 05-05-2011 |
20110159886 | METHOD AND APPARATUS FOR POSITION DETERMINATION IN A CELLULAR COMMUNICATIONS SYSTEM - A scaling apparatus and method scales uncertainty criteria (horizontal and vertical accuracy requirements) originally received from an end user before the uncertainty criteria is sent on to a wireless terminal ( | 06-30-2011 |
20110207477 | Methods and Nodes in a Wireless Communication Network - A first network node and method in the first network node in a wireless communication network for enabling quality estimation of a measurement that is time based. The method comprises performing a timing measurement based on a signal received from a second network node. Also, a value of a channel characteristic for the signal received from the second network node is determined. Further, the determined value of the channel characteristic is associated with the timing measurement, such that quality estimation of the timing measurement is enabled. | 08-25-2011 |
20110230208 | Methods and Arrangements in a Telecommunication System - There is provided a method in a cellular telecommunications network, the cellular telecommunications network comprising at least a first cell and a second cell. The method comprises the steps of transmitting ( | 09-22-2011 |
20110244884 | Method and Arrangement in a Telecommunication System - The present invention provides a method and apparatus for enhancing signal measurements for positioning in a device ( | 10-06-2011 |
20110294510 | Method and Arrangement for Real-Time Difference Determination for Mobile Terminal Processing - In a method of providing real time difference determination for a mobile terminal in a telecommunication system, comprising a plurality of eNodeBs in communication with a core network, each eNodeB having a plurality of associated cells, each cell potentially servicing one or more mobile terminals, determining S | 12-01-2011 |
20120021769 | Methods and Arrangements for Enabling Estimation of a Position of a Mobile Terminal - Methods and arrangements in a first network node, a second radio network node and a mobile terminal for enabling estimation of a position of a mobile terminal are provided. The first network node receives a request for estimating the position of the mobile terminal. The first network node determines a first set of radio network nodes including the second radio network node and two additional radio network nodes. The first network node determines positioning signals for transmission from radio network nodes of the first set to the mobile terminal. The first network node instructs each of the radio network nodes of the first set to transmit the positioning signal, associated therewith, to the mobile terminal. | 01-26-2012 |
20120087363 | Methods and Systems for Codeword to Layer Mapping - In a transmitter or transceiver, codewords from HARQ processes can be mapped or assigned to various layers for transmission and/or retransmission of information on a radio channel. Exemplary embodiments provide for various mappings which facilitate, for example, HARQ processes. For example, a codeword can be mapped onto a plurality of layers which are equal in number to a channel rank of a radio channel to be used for the transmission. | 04-12-2012 |
20120122478 | Signalling Measurements for Positioning in a Wireless Network - A method in a signalling device for assisting in positioning of user equipment based on time measurements is provided. The signalling device is associated with an s-cell, which is recognized by the first network node as having limited functionality and is, therefore, not considerable for the user equipment as a candidate cell for serving the user equipment (for data transmission. The signalling device associated s-cell is part of a positioning neighbour list of neighbour cells. The neighbour cells in the list are configured to have time measurements performed thereon by the user equipment for enabling positioning. The signalling device is configured to transmit predefined reference signals in predefined subframes and according to a predefined pattern relating to preselected subcarriers and preselected time slots within a subframe. The signalling device obtains synchronisation information and transmits reference signals according to the configuration and synchronized according to the obtained synchronisation information. This enables the user equipment to receive and perform time measurements on the transmitted reference signals for positioning when the signalling device associated s-cell is in the positioning neighbour list. | 05-17-2012 |
20120258729 | Enhanced Angle-of-Arrival Positioning - The position of a mobile device served in a cell of a serving node of a wireless communication network is estimated by estimating an angle-of-arrival (AoA) between the mobile device and the serving node based on a precoding matrix indicator (PMI) determined for the serving node in a downlink direction or for the mobile device in an uplink direction. Also estimated is the AoA between the mobile device and a non-serving neighbor node of the wireless communication network based on a PMI determined for the neighbor node in the downlink direction or for the mobile device in the uplink direction. The downlink and/or uplink AoA estimation can be further enhanced by employing interference cancellation in the mobile device and in the radio node, respectively. The position of the mobile device is estimated based on the estimated AoAs. | 10-11-2012 |
20120264450 | Method and Arrangement in a Telecommunication System - Method and arrangement in a network node | 10-18-2012 |
20120295623 | METHODS AND APPARATUSES FOR POSITIONING A NODE IN A WIRELESS COMMUNICATIONS SYSTEM USING DIFFERENT RAN/RATS - A method in a positioning node ( | 11-22-2012 |
20120314604 | Methods and Arrangements for Performing Measurements in a Wireless Communication Network for Positioning or for Enabling Location-Based Services - Method and arrangement in a positioning target node ( | 12-13-2012 |
20130003814 | Load Estimation in Frequency Domain Pre-Equalization Systems - An arrangement ( | 01-03-2013 |
20130010633 | REDUCING LOAD IN A COMMUNICATIONS NETWORK - Apparatus and method for reducing an air interface load in a communication network. A base station is provided with a receiver adapted to receive signals from a terminal via a Dedicated Physical Control Channel (DPCCH) and a second control channel. A measuring unit measures a signal to interference ratio (SIR) of the DPCCH. An effective SIR determining unit determines an effective SIR on the basis of the measured SIR of the DPCCH and an estimate of the SIR of the second control channel. A comparison unit compares the effective SIR with a target SIR, and a power determination unit determines a power control command for controlling power usage for the DPCCH on the basis of the comparison. A transmitter sends a message to the terminal, the message including the power control command. The invention allows the DPCCH power (or DPCCH SIR) operating point to be maintained at a low level. | 01-10-2013 |
20130115973 | PRE-SCALING OF A-GPS POSITIONING ACCURACY DATA - A method in conjunction with positioning of a mobile terminal in a cellular telecommunication system is disclosed. According to the method, an end user's requested positioning accuracy for the positioning of the mobile terminal is determined ( | 05-09-2013 |
20130308480 | Load Estimation in Frequency Domain Pre-Equalization Systems - A method for noise rise estimation in a wireless communication system comprises measuring ( | 11-21-2013 |
20130310039 | Method and Arrangement for Real-Time Difference Determination for Mobile Terminal Positioning - A method disclosed herein provides a real time difference determination for a mobile terminal in a telecommunication system comprising a plurality of eNodeBs. The method includes determining a first timing advance value representative of a first geographical distance measure between the mobile terminal and a first serving eNodeB before handover to a second serving eNode B, determining a second timing advance value representative of a second geographical distance measure between the mobile terminal and the second eNodeB after the handover, determining TOA measure between the mobile terminal and at least two of the eNodeBs, and signaling representations of the determined first and second geographical distance measures and the determined TOA measures for the mobile terminal to at least the second eNodeB with a respective unique identification parameter of the at least two eNodeBs. The determination of the real time differences is enabled based on at least the signaled representations. | 11-21-2013 |
20130315216 | CHANNEL ESTIMATION IN WIRELESS COMMUNICATION SYSTEMS - A method for uplink channel estimation comprises providing ( | 11-28-2013 |
20140133542 | SIGNAL EQUALIZATION WITH COMPENSATION FOR SCRAMBLING CODE CORRELATION - A method for equalizing a received radio signal in a WCDMA system, comprises receiving ( | 05-15-2014 |
20150045056 | METHOD AND APPARATUS FOR POSITION DETERMINATION IN A CELLULAR COMMUNICATIONS SYSTEM - A scaling apparatus and method scales uncertainty criteria (horizontal and vertical accuracy requirements) originally received from an end user before the uncertainty criteria is sent on to a wireless terminal ( | 02-12-2015 |
20150065169 | Method and Arrangement in a Telecommunication System - Method and arrangement in a network node for improving conditions for ground-based positioning of mobile terminals in a wireless communication system are disclosed. The method and arrangement concerns adaptation of an antenna arrangement associated with the network node, so that a virtual positioning cell is formed in a positioning radio resource, in which positioning reference signals are transmitted or received. In one exemplary embodiment, the antenna arrangement is adapted to form the virtual positioning cell by changing the radiation pattern of at least one antenna used for communication of user data traffic. | 03-05-2015 |