US9491742B2

5G,4G

Title

RADIO RECEPTION APPARATUS RADIO TRANSMISSION APPARATUS AND RADIO COMMUNICATION METHOD

Application Number:

US201514969943

Publication Date:

08-11-2016

Current Assignee:

Family ID:

Application Date:

15-12-2015

Publication Country:

US

Priority Date:

16-03-2009

Declaring Company:

Abstract  Abstract

Where first and second reference signals for a first and second communication system respectively are transmitted resources that affect a reception apparatus compatible only with the first communication system can be minimized and the throughput can be prevented from being deteriorated. As resources for a reference signal CSI-RS for LTE-A last half symbols in a time direction of a resource unit RB/Sub-frame defined in a frequency-time domain are used and the CSI-RS is allocated in a position up to the last two symbols or in the last symbol or the like of a particular RB/Sub-frame and transmitted when a reference signal 4RS for LTE is transmitted to a reception apparatus in addition to transmitting CSI-RS for LTE-A. The reception apparatus receives CSI-RS allocated in the last half symbol of RB/Sub-frame based on CSI-RS allocation information measures channel quality by using this CSI-RS and transmits and reports feedback information.

Note:

The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)

The information in grey was provided by the patent holder

The information in purple was extracted from the FrandAvenue

Explicitly disclosed patent

Implicitly disclosed patent

Basis patent

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