| 发明名称 | Estimation of channel quality indicator using additional reference signals | ||
| 摘要 | Methods, a user equipment and a radio network node relating to estimation of a channel quality indicator, CQI, are provided. A first reference signal is carried by a downlink channel of a radio communication system. The user equipment receives from the radio network node information about scheduling of a downlink transmission to the user equipment and information about a second reference signal being different from the first reference signal. Furthermore, the user equipment receives from the radio network node the downlink transmission. The downlink transmission comprises the first reference signal and the second reference signal. Next, the user equipment estimates the CQI based on the first reference signal and the second reference signal. | ||
| 申请公布号 | US9060306(B2) | 申请公布日期 | 2015.06.16 |
| 申请号 | US201113976772 | 申请日期 | 2011.01.13 |
| 申请人 | Telefonaktiebolaget L M Ericsson (publ) | 发明人 | Cedergren Andreas;Rosenqvist Anders |
| 分类号 | H04W24/10;H04L1/20;H04B1/707;H04B7/06;H04L1/00 | 主分类号 | H04W24/10 |
| 代理机构 | Withrow & Terranova, PLLC | 代理人 | Withrow & Terranova, PLLC |
| 主权项 | 1. A method in a user equipment for estimating a channel quality indicator, CQI, wherein the user equipment and a radio network node are comprised in a radio communication system, wherein a first reference signal is carried by a downlink channel of the radio communication system, wherein the method comprises: receiving from the radio network node, information about scheduling of a downlink transmission to the user equipment, and information about a second reference signal being different from the first reference signal, wherein the information about the second reference signal comprises one or more of: a modulation scheme of the second reference signal, a transport block size for the second reference signal, a power of the second reference signal, and a code for code division multiplexing for the second reference signal; receiving from the radio network node the downlink transmission according to the received information about scheduling of the downlink transmission, wherein the downlink transmission comprises the first reference signal and the second reference signal; and estimating the CQI based on the first reference signal, and the second reference signal by means of the information about the second reference signal. | ||
| 地址 | Stockholm SE | ||