Method and apparatus for transmitting uplink reference signal in a multi-antenna wireless communication system
US8699436B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2011 |
| Grant date | Apr 15, 2014 |
| Priority date | — |
| Expiry date | Feb 14, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W28/04
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for transmitting a Reference Signal (RS) during retransmission at a User Equipment (UE) in a multi-antenna wireless communication system are disclosed. The RS transmission method includes receiving an uplink grant from a Base Station (BS), initially transmitting data and an RS corresponding to each layer based on the uplink grant, receiving ACKnowledgment/Negative ACKnowledgment (ACK/NACK) information for the initially transmitted data, and retransmitting the RS corresponding to each layer and the data according to the ACK/NACK information. The retransmission includes initializing a cyclic shift value for the RS corresponding to each layer according to a cyclic shift field for RSs included in the uplink grant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.