Patent application number | Description | Published |
20140177466 | RADIO COMMUNICATION SYSTEM, RADIO BASE STATION AND RADIO COMMUNICATION METHOD - The present invention is designed to execute adequate signaling even when individual user terminals perform communication to support separate types of communication, in MIMO transmission to use antennas having varying antenna configurations depending on the type of communication. A radio base station ( | 06-26-2014 |
20140192761 | RADIO COMMUNICATION SYSTEM, RADIO BASE STATION APPARATUS, USER TERMINAL AND RADIO COMMUNICATION METHOD - The present invention is designed to reduce the space to install antennas and still increase the system capacity despite the state of the distribution of user terminals in cells. According to the radio communication method of the present invention, a radio base station apparatus selects precoding vectors from a codebook that is set in advance to be uneven with respect to the direction of the arrangement of antenna elements, based on communication quality information of the user terminals in the cell, multiplies signals to supply to each antenna element by the selected precoding vectors, and transmits the signals multiplied by the precoding vectors to the user terminals, and the user terminal receives a signal from the radio base station apparatus, extracts a reference signal from the received signal and measures channel quality; and feeds back a communication quality feedback signal, including the measured channel quality, to the radio base station apparatus, via the uplink. | 07-10-2014 |
20140211731 | RADIO BASE STATION, USER TERMINAL, RADIO COMMUNICATION SYSTEM AND RADIO COMMUNICATION METHOD - The present invention is designed to reduce the increase in the amount of the calculation process in a mobile station and the amount of CSI feedback data, and also prevent the amount of overall system capacity from decreasing. This radio communication system ( | 07-31-2014 |
20150094076 | RADIO BASE STATION, RADIO COMMUNICATION SYSTEM AND RADIO COMMUNICATION METHOD - The present invention is designed to make effective use of radio resources in VSEC to output a plurality of beams of varying tilt angles for sectorization in vertical directions. A radio communication method for a radio base station that outputs a plurality of beams of varying tilt angles and forms a plurality of cells that are sectorized vertically, and a user terminal that establishes wireless connection with the radio base station, provides the steps in which the radio base station acquires information about the communication capacity of each of the plurality of cells, and controls the vertical plane beam width and/or transmission power of each cell and sets the coverage area of each cell so that differences in communication capacity between the plurality of cells are reduced. | 04-02-2015 |
Patent application number | Description | Published |
20140287262 | TIN-PLATED COPPER-ALLOY MATERIAL FOR TERMINAL HAVING EXCELLENT INSERTION/EXTRACTION PERFORMANCE - Tin-plated copper-alloy terminal material in which Sn-based surface layer is formed on a surface of a substrate made of Cu alloy, and a Cu—Sn alloy layer is formed between the Sn-based surface layer and the substrate; the Cu—Sn alloy layer contains Cu | 09-25-2014 |
20150056466 | TIN-PLATED COPPER-ALLOY MATERIAL FOR TERMINAL HAVING EXCELLENT INSERTION/EXTRACTION PERFORMANCE - A tin-plated copper-alloy terminal material wherein: a Sn-based surface layer formed on a surface of a substrate made of Cu alloy, and a Cu—Sn alloy layer/a Ni—Sn alloy layer/a Ni or Ni alloy layer are formed in sequence from the Sn-based surface layer between the Sn-based surface layer and the substrate; the Cu—Sn alloy layer is a compound-alloy layer containing Cu | 02-26-2015 |
20150118515 | TIN-PLATED COPPER-ALLOY TERMINAL MATERIAL - Tin-plated copper-alloy terminal material including a base material made of Cu alloy; a Sn-based surface layer formed on a surface of the base material and having an average thickness of 0.2 μm or larger and 0.6 μm or smaller; a Cu—Sn alloy layer generated between the Sn-based surface layer and the base material; and a Ni-based coating layer, formed of Ni or Ni—Sn alloy having a coating thickness of 0.005 μm or larger and 0.05 μm or smaller, in which an oil-sump depth Rvk of the Cu—Sn alloy layer measured when the Cu—Sn alloy layer is appeared on a surface by fusing and removing the Sn-based surface layer is 0.2 μm or larger; a part of the Cu—Sn alloy layer is exposed from the Sn-based surface layer; the Ni-based coating layer is formed on the exposed Cu—Sn alloy layer; and dynamic friction coefficient of the surface is 0.3 or less. | 04-30-2015 |
20150184302 | TIN-PLATED COPPER-ALLOY TERMINAL MATERIAL - By forming a nickel-based coating layer or a cobalt-based coating layer having a coating thickness of 0.005 μm or larger and 0.05 μm or smaller on an outermost surface of a tin-based surface layer of a terminal material of low-insertion force in which an asperity shape of an interface between a copper-tin alloy layer and a tin-based surface layer is controlled, it is possible to reduce insertion force of fitting even though all-purpose tin-plated terminal material is used by combination. | 07-02-2015 |