Title:
BASE STATION AND FEEDBACK INFORMATION CONTROL METHOD IN RADIO COMMUNICATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2012/090453
Kind Code:
A1
Abstract:
A base station includes: a subset information generation section which selects M precoding matrices from among N precoding matrices and sets the M precoding matrices as a precoding matrix subset; a transmission section which transmits the precoding matrix subset to a radio communication device; and a reception section which receives feedback information from a radio communication device that is generated by the radio communication device, wherein the feedback information includes information abot at least one precoding matrix which is selected from the precoding matrix subset based on reception quality at the radio communication device.
Inventors:
KOYANAGI, Kenji (7-1 Shiba 5-chome, Minato-k, Tokyo 01, 10880, JP)
ISHII, Naoto (7-1 Shiba 5-chome, Minato-k, Tokyo 01, 10880, JP)
ISHII, Naoto (7-1 Shiba 5-chome, Minato-k, Tokyo 01, 10880, JP)
Application Number:
JP2011/007201
Publication Date:
July 05, 2012
Filing Date:
December 22, 2011
Export Citation:
Assignee:
NEC Corporation (7-1 Shiba 5-chome, Minato-ku Tokyo, 01, 10880, JP)
KOYANAGI, Kenji (7-1 Shiba 5-chome, Minato-k, Tokyo 01, 10880, JP)
ISHII, Naoto (7-1 Shiba 5-chome, Minato-k, Tokyo 01, 10880, JP)
KOYANAGI, Kenji (7-1 Shiba 5-chome, Minato-k, Tokyo 01, 10880, JP)
ISHII, Naoto (7-1 Shiba 5-chome, Minato-k, Tokyo 01, 10880, JP)
International Classes:
H04J99/00; H04B7/04
Attorney, Agent or Firm:
KATSURAGI, Yuji (603 Dai-ichi Kasahara Bldg, 21-18 Higashi-Ikebukuro 3-chome, Toshima-k, Tokyo 13, 17000, JP)
Claims: