发明名称 |
Method for terminal deciding uplink transmission power in macro cell environment comprising remote radio head (RRH), and terminal apparatus for same |
摘要 |
Disclosed is a method for a terminal deciding an uplink transmission power in a macro cell environment, comprising at least one remote radio head (RRH). The method for the terminal deciding the uplink transmission power, comprises the steps of: receiving from the base station configuration information on the base station and on a state channel information-reference signal (CSI-RS) of the at least one RRH and CSI-RS transmission power information; measuring the strength of a received signal of the CSI-RS which is received from the at least one RRH; and estimating downlink path loss that corresponds to a node that is set as a reception point or a reception RRH by using the configuration information on the CSI-RS and the CSI-RS transmission power information. |
申请公布号 |
US9226247(B2) |
申请公布日期 |
2015.12.29 |
申请号 |
US201214239505 |
申请日期 |
2012.08.20 |
申请人 |
LG ELECTRONICS INC. |
发明人 |
Kim Dongcheol;Cho Hangyu |
分类号 |
H04W52/42;H04W52/24;H04W52/40;H04W24/08;H04W88/02;H04W52/22;H04W52/14;H04L25/02;H04B7/02 |
主分类号 |
H04W52/42 |
代理机构 |
Lee, Hong, Degerman, Kang & Waimey |
代理人 |
Lee, Hong, Degerman, Kang & Waimey |
主权项 |
1. A method of determining an uplink transmission power by a user equipment in a macro cell environment that includes at least one remote radio head (RRH), the method comprising the steps of:
receiving, from a base station, channel state information-reference signal (CSI-RS) configuration information and CSI-RS transmission power information of the base station and the at least one RRH, wherein the CSI-RS transmission power information includes a CSI-RS transmission power level of the base station and the at least one RRH, the CSI-RS transmission power of the base station is an absolute value level and the transmission power of the at least one RRH corresponds to a difference value with the CSI-RS power of the base station; measuring a signal strength of CSI-RS received from the at least one RRH; and estimating a downlink path loss that corresponds to a node that is set as a reception point or a reception RRH by using the signal strength of the received CSI-RS, the CSI-RS configuration information and the CSI-RS transmission power information, determining an uplink transmission power, to be transmitted to the node set as the reception point or the reception RRH, based on the estimated downlink path loss; and transmitting an uplink signal to the node set as the reception point or the reception RRH by using the determined uplink transmission power. |
地址 |
Seoul KR |