Title:
通信装置、通信方法及び集積回路
Document Type and Number:
Japanese Patent JP5844849
Kind Code:
B2
Abstract:
A wireless communication base station apparatus which is able to prevent deterioration in the throughput of LTE terminals even when LTE terminals and LTE+ terminals coexist. In this apparatus, a receiver receives a first reference signal that is mapped in a subframe and transmitted to the communication apparatus compliant with a first communication system, and receives a second reference signal that is mapped in all subframes and transmitted to the communication apparatus and another communication apparatus compliant with a second communication system; a circuitry computes a channel quality indicator (CQI) based on the received first reference signal and the received second reference signal, wherein the first reference signal is mapped with an interval, which is the same as (i) an interval of retransmissions in a Hybrid automatic repeat request (HARQ) process or a number of HARQ processes, (ii) an integer multiple of an interval of retransmissions in a HARQ process or an integer multiple of a number of HARQ processes, or (iii) 1/N of an interval of retransmissions in a HARQ process or 1/N of a number of HARQ processes, where N is a positive integer.
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Inventors:
Akihiko Nishio
Masago Nakao
Daichi Imamura
Masago Nakao
Daichi Imamura
Application Number:
JP2014114240A
Publication Date:
January 20, 2016
Filing Date:
June 02, 2014
Export Citation:
Assignee:
Panasonic Intellectual Property Corporation of America
International Classes:
H04W72/04; H04W16/28
Other References:
Qualcomm Europe,Aspects to consider for DL transmission schemes of LTE-A,3GPP TSG-RAN WG1#55b,3GPP,2009年 1月16日,R1-090365
Nortel,Design Aspect for Higher-order MIMO in LTE-advanced,3GPP TSG-RAN WG1#55,3GPP,2008年11月14日,R1-084466
Nortel,Design Aspect for Higher-order MIMO in LTE-advanced,3GPP TSG-RAN WG1#55,3GPP,2008年11月14日,R1-084466
Attorney, Agent or Firm:
Koichi Washida