Patent application number | Description | Published |
20120106471 | Methods and Arrangements for Dynamically Triggering the Transmission of Sounding Reference Signal in a Telecommunication System - The present invention relates to methods and arrangements for providing a more flexible configuration of SRS transmission. This is achieved by dynamically triggering a mobile terminal to transmit SRS. Thus, embodiments of the invention allow dynamically trigged SRS in any uplink subframe, even without necessarily reserving resources semi-statically on cell level. This is done by signaling to the terminal whether the mobile terminal should leave the predefined uplink symbol empty for sounding reference signals or use it for data transmission. In case a terminal leaves the last symbol empty for sounding reference signals, there are two possibilities, either the UE shall transmit one or several reference signals from one or several antennas, or the terminal shall leave the last symbol blank since another terminal may be using the resource for sounding. Accordingly, in a specific embodiment, there are at least three different messages that can be conveyed to the terminal: use the predefined uplink symbol for data, leave it blank or use it for sounding reference signals. | 05-03-2012 |
20120120997 | METHODS AND SYSTEMS FOR PRECODER SELECTION ASSISTED BY DEMODULATION REFERENCE SIGNALS (DM-RS) - Systems and methods according to these exemplary embodiments provide for using demodulation reference signals (DM-RSs) to obtain channel state information (CSI) for precoder selection. A method includes: receiving a DM-RS in at least one subframe, determining the CSI from the DM-RS; and using the CSI to perform at least one function. | 05-17-2012 |
20120195395 | EVM Pooling for Multi-Standard and Multi-Carrier Systems - Error vector magnitude (EVM) is pooled and adaptively distributed among carriers in a multi-standard or multi-carrier system to reduce peak to average power ratios (PAPR) without exceeding EVM limits. Correction tone injection is used to reduce PAPR. The amplitude of each correction tone, and number of correction tones assigned to a carrier, are adjusted to control the EVM and out-of-band distortion of each carrier, to comply with EVM limits imposed by the respective radio access technology. | 08-02-2012 |
20120218945 | Method and Arrangement for Random Access Diversity - Methods and arrangements for enablement of transmission of a network node assisted random access request using transmit diversity. The methods and arrangements relate to providing information related to a non-transparent diversity scheme to a mobile terminal, which diversity scheme then is used by the mobile terminal when transmitting a network node assisted random access request. | 08-30-2012 |
20120257584 | Methods and Arrangements in a Telecommunication System - The present invention relates to methods and apparatus for providing a more flexible configuration of sounding reference signal, SRS, transmission. This is achieved by dynamically triggering a mobile terminal to transmit SRS. Thus, embodiments of the invention include a method implemented by a base station in a communications network that semi-statically configures some uplink symbols for periodic SRS transmission and other uplink symbols for aperiodic SRS transmission. The method includes dynamically determining whether an uplink symbol that has been semi-statically configured for aperiodic SRS transmission is to be used by a given mobile terminal at a given time for SRS transmission. The method then further includes signaling a terminal-specific instruction that indicates said determination to the given mobile terminal. | 10-11-2012 |
20120294254 | SRS Transmission in PUSCH - The present invention uses user-specific resources, as allocated on the uplink, for conveying one or more antenna-specific sounding reference signals (SRSs). This technique advantageously permits, for example, a user equipment (UE) configured for uplink Multiple-Input-Multiple-Output (MIMO) operation to send antenna-specific SRSs within the granted resources allocated to the UE via one or more scheduled uplink grants. That is, within the granted resources allocated by a given uplink grant, a UE uses at least a portion of those resources for sending antenna-specific SRSs, rather than for sending uplink data (user traffic). Thus, in one or more embodiments, the present invention comprises a method at a UE of transmitting antenna-specific SRSs for two or more uplink transmit antennas. The method comprises transmitting an antenna-specific sounding reference signal for at least one of the uplink transmit antennas within a granted resource allocated to the user equipment for a scheduled uplink data transmission. | 11-22-2012 |
20120314592 | Decentralized Control of Interference Reduction in a Wireless Communication System - A first base station ( | 12-13-2012 |
20120314742 | Macro Diversity Using Likelihood Values - Method and arrangement in a serving base station for determining a binary value of information data received from a user equipment, by using a supportive likelihood value received from a supporting base station. The user equipment transmits information data to be received both by the serving base station and the supporting base station base station. The method comprises: decoding information data bits received from the user equipment into a first likelihood value, without determining a binary value for each bit of the information data, a supportive likelihood value of the information data bits transmitted from the user equipment is received from the supporting base station, which supportive likelihood value is based on a decoding of the information data bits performed in the supporting base station. The first likelihood value of the decoded information bits is combined with the received supportive likelihood value of the decoded information bits. Thus a binary value for each bit of the information data transmitted from the user equipment is determined, based on the combined first and supportive likelihood values. | 12-13-2012 |
20130143502 | Dual Operation of User Equipment in Licensed and Unlicensed Spectrum - Parameters that define the frequency raster points to be used in an unlicensed band are used to support operation of wireless devices in both licensed and unlicensed frequency bands. Corresponding signaling messages are used to exchange information regarding the device's capabilities, preferences, transmission power, etc. In one method, implemented in a wireless communication device ( | 06-06-2013 |
20130155991 | Method and Network Node in a Communications System - The present disclosure relates to a method and a network node | 06-20-2013 |
20140056190 | Reducing Interference Caused by an Atmospheric Duct in a Wireless Communication System - A first base station ( | 02-27-2014 |
20140092761 | USER EQUIPMENT, NETWORK NODE AND METHODS THEREIN - Embodiments herein relate to a method in a user equipment ( | 04-03-2014 |
20140094125 | USER EQUIPMENT, NETWORK NODE AND METHODS THEREIN - Embodiments herein relate to a method in a user equipment ( | 04-03-2014 |
20140192686 | Methods and Apparatus for Multiple Connectivity in a TDD System - A wireless communication system ( | 07-10-2014 |
20140219376 | METHODS AND SYSTEMS FOR PRECODER SELECTION ASSISTED BY DEMODULATION REFERENCE SIGNALS (DM-RS) - Systems and methods according to these exemplary embodiments provide for using demodulation reference signals (DM-RSs) to obtain channel state information (CSI) for precoder selection. A method includes: receiving a DM-RS in at least one subframe, determining the CSI from the DM-RS; and using the CSI to perform at least one function. | 08-07-2014 |