- Patent Title: Wireless communication apparatus and wireless communication method
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Application No.: US15949832Application Date: 2018-04-10
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Publication No.: US10257810B2Publication Date: 2019-04-09
- Inventor: Masayuki Hoshino , Akihiko Nishio , Seigo Nakao , Daichi Imamura , Yasuaki Yuda
- Applicant: Sun Patent Trust
- Applicant Address: US NY New York
- Assignee: Sun Patent Trust
- Current Assignee: Sun Patent Trust
- Current Assignee Address: US NY New York
- Agency: Seed IP Law Group LLP
- Priority: JP2009-133133 20090602; JP2009-254160 20091105; JP2010-030237 20100215
- Main IPC: H04W72/04
- IPC: H04W72/04 ; H04W24/10 ; H04W72/12 ; H04B17/24 ; H04B7/06 ; H04B17/00 ; H04L1/00 ; H04L5/00 ; H04L1/16 ; H04W88/02

Abstract:
To suppress concentration of channel quality information requests and reports in a case of discontinuously transmitting reference signals at specific resources in a time domain, and thereby preventing degradation in throughput. A transmission apparatus transmits an instruction of CSI request distributed for each reception apparatus in a subframe concurrently with or earlier than a reference signal CSI-RS to each of reception apparatuses. Each of the reception apparatuses detects the CSI request from the transmission apparatus and calculates CSI from a channel estimation value of CSI-RS received thereafter. Then, the reception apparatus identifies CSI report subframe of the own apparatus from CSI report interval information of a given time interval notified in advance, the subframe in which the CSI request is detected and transmission timing of CSI-RS, and transmits a feedback signal including CSI report value by using PUSCH at the timing of the CSI report subframe.
Public/Granted literature
- US20180234949A1 WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION METHOD Public/Granted day:2018-08-16
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