Title:
負荷感応チャネル状態基準信号送信
Document Type and Number:
Japanese Patent JP6689874
Kind Code:
B2
Abstract:
The disclosure provides for an evolved node B (eNB) to provide channel state information resources for wireless communications. The eNB may determine a downlink transmission status for a first user equipment (UE) connected to the eNB. The eNB may adjust a scheduled non-zero power channel state reference signal (NZP CSI-RS) transmission from the eNB based on the downlink transmission status. A resource for the scheduled NZP CSI-RS transmission may coincide or be coordinated with, an interference measurement resource of a second UE connected to a second eNB. Adjusting the reference signal transmission may include scaling a transmission power for the reference signal transmission or precoding the NZP CSI-RS based on an expected precoding for downlink user data transmission for the first UE. The eNB may also ignore channel state information reports from the first UE when the eNB has no downlink data for the first UE.
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Inventors:
Vinay Chande
Chirag Suresh by Patel
Mostafa Koshnevisan
Ting Hung Gee
Chirag Suresh by Patel
Mostafa Koshnevisan
Ting Hung Gee
Application Number:
JP2017548273A
Publication Date:
April 28, 2020
Filing Date:
February 22, 2016
Export Citation:
Assignee:
Qualcomm, Inc.
International Classes:
H04W72/04; H04B7/022; H04B7/0456; H04B7/06; H04L27/26; H04W24/10; H04W28/16; H04W52/32; H04W72/12; H04W92/20
Foreign References:
| WO2014020828A1 |
Other References:
Ericsson,Discussion on CSI reporting for Inter eNB CoMP[online], 3GPP TSG-RAN WG3#87 R3-150309,インターネット,2015年 2月13日
Huawei,CSI-RS design to support multiple-cell measurement[online], 3GPP TSG-RAN WG1#60 R1-101058,インターネット,2010年 2月26日
MediaTek Inc.,CQI for multi-CSI-RS-resource feedback[online], 3GPP TSG-RAN WG1#68b R1-121178,インターネット,2012年 3月30日
Huawei,CSI-RS design to support multiple-cell measurement[online], 3GPP TSG-RAN WG1#60 R1-101058,インターネット
MediaTek Inc.,CQI for multi-CSI-RS-resource feedback[online], 3GPP TSG-RAN WG1#68b R1-121178,インターネット
Attorney, Agent or Firm:
Yasuhiko Murayama
Kuroda Shinpei
Kuroda Shinpei