公开(公告)号：US20170273138A1

公开(公告)日：2017-09-21

申请号：US15617453

申请日：2017-06-08

Applicant: KYOCERA CORPORATION

Inventor： Hiroyuki URABAYASHI ,  Noriyoshi FUKUTA

IPC: H04W76/04 ,  H04W72/00 ,  H04W48/12

CPC classification number: H04W76/28 ,  H04W4/06 ,  H04W8/26 ,  H04W48/12 ,  H04W72/005 ,  H04W72/042 ,  H04W72/1289 ,  H04W76/40 ,  H04W88/02 ,  H04W88/12

Abstract: A user terminal according to one aspect executes a first and second DRX operations. The first DRX operation is an operation of discontinuously monitoring first control information, which is transmitted from the base station via PDCCH, using a C-RNTI that uniquely identifies the user terminal in a cell of the base station. The second DRX operation is an operation of discontinuously monitoring second control information, which is transmitted from the base station via the PDCCH, using a group RNTI assigned to a terminal group including the user terminal. The user terminal monitors the first control information in a first ON duration for the first DRX operation, and monitors the second control information in a second ON duration for the second DRX operation, the second ON duration being independent of the first ON duration.

公开(公告)号：US20150312010A1

公开(公告)日：2015-10-29

申请号：US14647810

申请日：2013-11-11

Applicant: KYOCERA CORPORATION

Inventor： Hiroyuki URABAYASHI ,  Naohisa MATSUMOTO

IPC: H04L5/00 ,  H04L1/06 ,  H04W72/04

CPC classification number: H04L5/005 ,  H04L1/0026 ,  H04L1/0035 ,  H04L1/0693 ,  H04L5/0023 ,  H04L5/0085 ,  H04W48/12 ,  H04W72/042

Abstract: A base station that communicates with a plurality of user terminals in a mobile communication system in which a radio signal including a reference signal for estimating a channel characteristic is transmitted and received, comprises: a control unit that changes a reference signal density that is a density of the reference signal applied to communication with the plurality of user terminals. The control unit calculates a statistics amount of communication quality information acquired for all the plurality of user terminals, and changes the reference signal density on the basis of the statistics amount.

Abstract translation: 在发送和接收包括用于估计信道特性的参考信号的无线电信号的移动通信系统中与多个用户终端进行通信的基站包括：控制单元，其改变作为密度的参考信号密度 用于与多个用户终端通信的参考信号。 控制单元计算针对所有多个用户终端获取的通信质量信息的统计量，并且基于统计量来改变参考信号密度。