Invention Grant
- Patent Title: Method and base station for transmitting downstream link data, and method and user device for receiving downstream link data
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Application No.: US14884271Application Date: 2015-10-15
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Publication No.: US09485065B2Publication Date: 2016-11-01
- Inventor: Moon Il Lee , Jae Hoon Chung , Hyun Soo Ko , Seung Hee Han
- Applicant: LG Electronics Inc.
- Applicant Address: KR Seoul
- Assignee: LG Electronics Inc.
- Current Assignee: LG Electronics Inc.
- Current Assignee Address: KR Seoul
- Agency: Dentons US LLP
- Priority: KR10-2011-0000470 20110104
- Main IPC: H04L25/03
- IPC: H04L25/03 ; H04L5/00 ; H04J13/16 ; H04J13/00 ; H04J13/18 ; H04L27/26 ; H04W72/04 ; H04J11/00 ; H04B7/04 ; H04W88/06
Abstract:
The present invention relates to a method and apparatus which transmit/receive at least one demodulation reference signal by using a CDM group and/or a transmission rank of a user device that have been used to transmit the at least one demodulation reference signal for the user device, an OCC that has been used to spread the demodulation reference signal, etc. Also, the present invention relates to a method and apparatus which change an antenna port for transmitting the demodulation reference signal by using NDI for a disabled transmission block.
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