Title:
RADIO BASE STATION APPARATUSES, MOBILE TERMINAL APPARATUSES AND WIRELESS COMMUNICATION METHOD
Document Type and Number:
WIPO Patent Application WO/2011/083794
Kind Code:
A1
Abstract:
Provided are radio base station apparatuses, mobile terminal apparatuses and a wireless communication method wherein downlink channel quality determination reference signals are transmitted and received in consideration of the orthogonalization among transmission antennas, the orthogonalization among cells and of highly precise interference estimation. According to the wireless communication method, the radio base station apparatuses generate channel quality determination reference signals, non-orthogonalize the channel quality determination reference signals such that the channel quality determination reference signals are not orthogonal to each other at least among some of the cells, orthogonalize the channel quality determination reference signals among the transmission antennas, and transmit the channel quality determination reference signals to the mobile terminal apparatuses together with control information, and each of the mobile terminal apparatuses receives a downlink signal including the control information and channel quality determination reference signal, uses the control information to extract the channel quality determination reference signal, and uses the channel quality determination reference signal to determine the channel quality.
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Inventors:
KISHIYAMA, Yoshihisa (NTT DOCOMO INC., SANNO PARK TOWER, 11-1, Nagatacho 2-chome, Chiyoda-k, Tokyo 50, 〒1006150, JP)
岸山 祥久 (〒50 東京都千代田区永田町二丁目１１番１号 山王パークタワー 株式会社エヌ・ティ・ティ・ドコモ 知的財産部内 Tokyo, 〒1006150, JP)
TAKEDA, Kazuaki (NTT DOCOMO INC., SANNO PARK TOWER, 11-1, Nagatacho 2-chome, Chiyoda-k, Tokyo 50, 〒1006150, JP)
岸山 祥久 (〒50 東京都千代田区永田町二丁目１１番１号 山王パークタワー 株式会社エヌ・ティ・ティ・ドコモ 知的財産部内 Tokyo, 〒1006150, JP)
TAKEDA, Kazuaki (NTT DOCOMO INC., SANNO PARK TOWER, 11-1, Nagatacho 2-chome, Chiyoda-k, Tokyo 50, 〒1006150, JP)
Application Number:
JP2011/050035
Publication Date:
July 14, 2011
Filing Date:
January 05, 2011
Export Citation:
Assignee:
NTT DOCOMO, INC. (11-1, Nagatacho 2-chome Chiyoda-k, Tokyo 50, 〒1006150, JP)
株式会社エヌ・ティ・ティ・ドコモ (〒50 東京都千代田区永田町二丁目１１番１号 Tokyo, 〒1006150, JP)
KISHIYAMA, Yoshihisa (NTT DOCOMO INC., SANNO PARK TOWER, 11-1, Nagatacho 2-chome, Chiyoda-k, Tokyo 50, 〒1006150, JP)
岸山 祥久 (〒50 東京都千代田区永田町二丁目１１番１号 山王パークタワー 株式会社エヌ・ティ・ティ・ドコモ 知的財産部内 Tokyo, 〒1006150, JP)
株式会社エヌ・ティ・ティ・ドコモ (〒50 東京都千代田区永田町二丁目１１番１号 Tokyo, 〒1006150, JP)
KISHIYAMA, Yoshihisa (NTT DOCOMO INC., SANNO PARK TOWER, 11-1, Nagatacho 2-chome, Chiyoda-k, Tokyo 50, 〒1006150, JP)
岸山 祥久 (〒50 東京都千代田区永田町二丁目１１番１号 山王パークタワー 株式会社エヌ・ティ・ティ・ドコモ 知的財産部内 Tokyo, 〒1006150, JP)
International Classes:
H04J11/00; H04W72/04
Attorney, Agent or Firm:
AOKI, Hiroyoshi et al. (7F Nibancho Cashew Bldg, 4-3 Niban-cho, Chiyoda-k, Tokyo 84, 〒1020084, JP)
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