Patent application number | Description | Published |
20110065471 | METHOD AND APPARATUS RELATING TO SPECTRUM SENSING - The invention presents methods and corresponding devices for improving cooperative spectrum initiating sensing. A device ( | 03-17-2011 |
20110076959 | Method and Apparatus Relating to Spectrum Sensing - The invention comprises a method and a corresponding apparatus ( | 03-31-2011 |
20110098005 | Method and Apparatus Relating to Spectrum Sensing - The invention presents methods and corresponding device relating to cooperative spectrum sensing. First a candidate set of sensors that can participate in an occasion of cooperative spectrum sensing is obtained. A cost formula for calculating a cost associated with using sensors from the candidate set in the cooperative spectrum sensing is then defined ( | 04-28-2011 |
20110165903 | Coordinated Transmission for Secondary Usage - The present invention relates to a method and a secondary user enabling secondary usage of radio resources owned by a primary party. The present invention also relates to a primary party and a broker. The secondary user is adapted to obtain radio resource allocation information transmitted from the primary party. It is further adapted to identify radio resources available for secondary usage based upon the radio resource allocation information. It is finally adapted to engage in communication over at least part of the radio resources identified as available for secondary usage. | 07-07-2011 |
20120231809 | Methods and Apparatus for Positioning Measurement in Multi-Antenna Transmission Systems - This document discloses solutions for using a mix of reference signal types in a wireless communications network, e.g., a first type and a second type, in making positioning-related measurements. In one example, a UE uses a “mix” of CRS and PRS. As an example case, a UE receives PRS and, possibly, CRS from one or more cells, while it receives only CRS from one or more other cells. In this case, the UE determines, e.g., received signal timing values for CRS as received from some cells, on a per-cell basis, and for PRS as received from other cells, on a per-cell basis. The UE can measure and report on per-signal/per-cell basis and can perform calculations involving a mix of timing measurements made for both CRS and PRS. In a further aspect, reference signal transmissions are controlled or coordinated on a per-port basis in cells that use multiple antenna ports for transmitting within each such cell. | 09-13-2012 |
20120307729 | Pilot Shifting - Some example embodiments presented herein may be directed towards a method in a Base Station, which may be comprised in a Radio Network, for transmitting a combined wireless communication signal. The combined wireless communication signal may comprise a primary and a secondary signal component. The method may comprise transmitting the secondary signal component to be received by an user equipment, the secondary signal component may comprise secondary pilot resources that may be dynamically shifted, where the dynamic shifting may be based on a current estimation procedure. | 12-06-2012 |
20120307731 | Primary Channel Estimation - Some example embodiments may be directed towards a method in a network node, which may be comprised in a Radio Network, for transmitting a combined wireless communication signal. The combined wireless communication signal may comprise a primary and a secondary signal component. The method may comprise transmitting to an user equipment the secondary signal component according to a secondary transmission scheme such that the secondary signal component at least partially overlaps with the primary signal component with respect to a signal domain. The method may also comprise simultaneously, suppressing at least one portion of the secondary signal component during a transmission of the primary signal component. | 12-06-2012 |
20120328051 | Secondary Channel Estimation - Some example embodiments may be directed towards improving a secondary system channel estimation by using a primary channel estimate. Specifically, some example embodiments may be directed towards a method in an user equipment, which may be comprised in a Radio Network, for estimating a primary and a secondary channel. The method may comprise receiving from at least one Base Station a combined wireless communication signal through at least a portion of the primary channel. The method may also comprise determining an estimation of the primary channel. The method may further comprise determining an estimation of the secondary channel. The method may further comprise determining at least one common sub-component between the estimations of the primary and secondary channels, and determining an updated estimation of the secondary channel based on the at least one common sub-component. | 12-27-2012 |
20130156190 | Method and Device for Truncating Location Information - The embodiments herein relate to a method in a first device ( | 06-20-2013 |
20130170572 | Mobility-Resilient Multi-Antenna Communications - The antenna weight selection solution disclosed herein selects antenna weights for a multiple antenna communication system that transmits uplink or downlink data using multiple radiation patterns based on channel variability metrics determined for two or more sets of candidate antenna weights. In so doing the antenna weight selection solution disclosed herein reduces the channel variability associated with data transmissions, and therefore reduces the amount of feedback and/or the feedback rates required for the multiple antenna communication system. | 07-04-2013 |
20130237238 | METHODS AND DEVICES FOR INTERSYSTEM QUIET PERIOD SYNCHRONIZATION - The present invention relates to the technical field of dynamic spectrum access. Synchronization of quiet periods for spectrum sensing can significantly benefit sharing of available secondary access spectrum between two or more wireless communication systems in the same geographic region. The object of the present invention is to provide a methodology by which quiet periods can be synchronized in time between different secondary access wireless communication systems. Quiet Period Clients (QPC) of secondary access wireless communication systems are adapted to send requests to a Quiet Period Server (QPS) to obtain a quiet period rule set. The QPC receives from the QPS an answer specifying the quiet period rule set, and optional quiet period synchronization information. The systems perform their transmissions in accordance with the received rules. | 09-12-2013 |
20130343219 | Method for Determining White Space Interference Margin - The disclosure relates to a network node of a wireless network, and to a related method for determining a margin of an interference level. The network node controls at least one white space device, and the interference level is associated with a critical position and a channel available for secondary usage by the at least one white space device. The method comprises the following steps: (a) initializing ( | 12-26-2013 |
20140022966 | FLEXIBLE SUBFRAMES - The technology disclosed provides the ability for a subframe to be configured as a “flexible” subframe. As a result, at least three different types of subframes in a TDD system may be configured: a downlink (“DL”) subframe, an uplink (“UL”) subframe, and a “flexible” subframe. While the DL and UL subframes are preconfigured for each frame instance, the flexible subframes are dynamically allocated to be an uplink subframe in one instance of a frame and a downlink subframe in another instance of the frame. | 01-23-2014 |
20140023031 | Method and Arrangement for White Space Device Transmission - The disclosure relates to a white space device (WSD) of a secondary wireless network, and to a related method for transmitting a first signal on a channel available for secondary usage allocated to a primary wireless system. The method in the WSD comprises determining ( | 01-23-2014 |
20140148198 | Methods and Apparatus for Positioning Measurement in Multi-Antenna Transmission Systems - This document discloses solutions for using a mix of reference signal types in a wireless communications network, e.g., a first type and a second type, in making positioning-related measurements. In one example, a UE uses a “mix” of CRS and PRS. As an example case, a UE receives PRS and, possibly, CRS from one or more cells, while it receives only CRS from one or more other cells. In this case, the UE determines, e.g., received signal timing values for CRS as received from some cells, on a per-cell basis, and for PRS as received from other cells, on a per-cell basis. The UE can measure and report on per-signal/per-cell basis and can perform calculations involving a mix of timing measurements made for both CRS and PRS. In a further aspect, reference signal transmissions are controlled or coordinated on a per-port basis in cells that use multiple antenna ports for transmitting within each such cell. | 05-29-2014 |
20140220901 | Method for Controlling Interference from White Space Units - The present invention relates to a method of a node such as a geo-location database, for controlling an aggregated interference generated by at least two white space units in at least one point in space for at least one frequency channel. A model of propagation channels from each of the at least two white space units to each of the at least one point comprises a variable with a lognormal distribution. The method comprises receiving ( | 08-07-2014 |
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 |
20150078327 | MOBILITY-BASED RADIO RESOURCE ASSIGNMENT METHODS, SYSTEMS AND DEVICES - Mobility-based radio resource assignment methods, systems and devices can assign user equipment to different nonoverlapping groups of radio resources depending on mobility of the user equipment. The groups of radio resources are nonoverlapping in time, frequency and/or code. For example, the groups of radio resources can include different pilot symbol densities, link adaptation and/or scheduling algorithms. The radio resources may be Long Term Evolution (LTE) radio resources. | 03-19-2015 |