The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 14, 2015
Filed:
Jan. 05, 2011
Akihito Morimoto, Tokyo, JP;
Mamoru Sawahashi, Tokyo, JP;
Yoshihisa Kishiyama, Tokyo, JP;
NTT DOCOMO, INC., Tokyo, JP;
Abstract
A mobile terminal apparatus, a radio base station apparatus and a radio communication method are provided which can perform optimum control during downlink CoMP transmission in an LTE-A system. The radio communication method according to the present invention includes steps of the mobile terminal apparatus receiving downlink signals including reference signals from a plurality of radio base station apparatuses associated with downlink CoMP, transmitting feedback information including the channel quality measurement results to the plurality of radio base station apparatuses, and steps of a radio base station apparatus receiving uplink signals including channel quality measurement results of a plurality of radio base station apparatuses associated with downlink CoMP and cell information on radio base station apparatuses whose average reception levels are within a first threshold range, and controlling, when there are radio base station apparatuses whose average reception level difference is within a second threshold range among radio base station apparatuses whose average reception levels are within the first threshold range, transmission power for both radio base station apparatuses.