发明名称 |
Method for allocating reference signal antenna port for transmission diversity technique in wireless communication system, and apparatus for same |
摘要 |
In the present invention, disclosed is a method for a base station transmitting a downlink control channel to a user equipment in a wireless communication system. More particularly, the method comprises the steps of: establishing resource element subsets comprising a plurality of resource elements; allocating a transmission resource for the downlink control channel in units of the resource element subsets; alternately allocating to the plurality of resource elements two antenna ports for demodulation-reference signal (DM-RS); and transmitting the downlink control channel to the user equipment through the transmission resource that is allocated by using the DM-RSs of the antenna ports that are allocated. |
申请公布号 |
US9467264(B2) |
申请公布日期 |
2016.10.11 |
申请号 |
US201314376118 |
申请日期 |
2013.02.07 |
申请人 |
LG ELECTRONICS INC. |
发明人 |
Seo Hanbyul |
分类号 |
H04L5/00;H04L5/14 |
主分类号 |
H04L5/00 |
代理机构 |
Lee, Hong, Degerman, Kang & Walmey |
代理人 |
Lee, Hong, Degerman, Kang & Walmey ;Kang Jonathan;Monaco Michael |
主权项 |
1. A method of transmitting a downlink control channel to a user equipment by a base station in a wireless communication system, the method comprising:
configuring resource element subsets comprised of a plurality of resource elements; allocating transmission resources for the downlink control channel in a unit of the resource element subset; allocating two antenna ports for a demodulation-reference signal (DM-RS) to the plurality of the resource elements alternatively; and transmitting the downlink control channel through the transmission resources using the DM-RS of the allocated two antenna ports, wherein a first index of the allocated two antenna ports is a fixed value, wherein a second index of the allocated two antenna ports is determined based on which cyclic prefix is applied to a subframe on which the downlink control channel is transmitted among a normal cyclic prefix and an extended cyclic prefix, wherein if the downlink control channel is transmitted on a subframe with the normal cyclic prefix, the allocated two antenna ports are not multiplexed to same resource elements, and wherein if the downlink control channel is transmitted on a subframe with the extended cyclic prefix, the allocated two antenna ports are multiplexed to same resource elements. |
地址 |
Seoul KR |