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1. (WO2017038454) BASE STATION AND RADIO TERMINAL

Pub. No.:    WO/2017/038454    International Application No.:    PCT/JP2016/073915
Publication Date: Fri Mar 10 00:59:59 CET 2017 International Filing Date: Wed Aug 17 01:59:59 CEST 2016
IPC: H04W 16/28
H04B 7/04
H04J 99/00
Applicants: KYOCERA CORPORATION
京セラ株式会社
Inventors: YAMAZAKI, Chiharu
山▲崎▼ 智春
Title: BASE STATION AND RADIO TERMINAL
Abstract:
An eNB 200 performs MIMO transmission using multiple antenna ports (AP) 7 through 14 that support transmission of a UE-specific RS. The antenna ports 7 through 14 include multiple primary antenna ports 7 and 8 which each support single-layer transmission, and multiple auxiliary antenna ports 9 through 14 which, in combination with the multiple primary antenna ports 7 and 8, are for expanding the number of transmission layers for each UE 100. The eNB 200 uses a prescribed auxiliary antenna port to perform single layer transmission without combination of the multiple primary antenna ports 7 and 8 and prescribed auxiliary antenna ports of the multiple auxiliary antenna ports 9 through 14.