Channel state information transmitting method and user equipment, channel state information receiving method and base station

摘要

As channel state information of multiple nodes in a multiple node system, the present invention relates to a method and a device for transmitting and receiving information showing a correlation between said multiple nodes. Also, the present invention relates to a method and a device for transmitting and receiving a Channel Quality Indication (CQI), in consideration of signal through transmitted by multiple nodes.

主权项

1. A method for transmitting, by a user equipment (UE) configured to receive signals from N nodes (where N>1), channel state information (CSI) to a base station (BS) configured to control at least one of the N nodes, the method comprising:
calculating a correlation value between the N nodes; and transmitting correlation information indicating the calculated correlation value to the BS, wherein the correlation value is calculated based on the following equation:R=f(⁢[H1⁢w1_H2⁢w2_…HN⁢wN_]H[⁢H1⁢w1_H2⁢w2_…HN⁢wN_])=  [⁢r11r12…r1⁢⁢Mr21r22…r2⁢⁢M⋮⋮⋱⋮r1⁢⁢MrM⁢⁢2…rMM⁢⁢], where ‘f’ is the function of arguments, and
Hiwi=[Hiwi(1)/|H1wi(1)| . . . Hiwi(Ri)/|Hiwi(Ri)|] where Hi is a channel from i-th node, ‘wi’ is a precoder of i-th node, Hiwi(k) is k-th column of Hiwi, and Ri is a rank of i-th node.