Method and apparatus for uplink data transmission in a wireless communication system
US9998267B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2013 |
| Grant date | Jun 12, 2018 |
| Priority date | — |
| Expiry date | Dec 25, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/0224
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Embodiments of the present disclosure relate to uplink data transmission in a wireless communication system. In an embodiment of the present disclosure, there is provided a method for uplink data transmission in a wireless communication system. The method comprises transmitting an indication for new-type reference signals to a user equipment, wherein the new-type reference signals have a reduced density of reference signals in frequency domain, and resource elements not used by reference signals in symbols for the new-type reference signals are used for coverage enhancement; receiving the new-type reference signals; and performing channel estimation based on the new-type reference signals. With embodiments of the present disclosure, it may reduce the density of reference signals in frequency domain, which means the overhead will not be increased substantially and besides saved resource element may be used to implement the coverage enhancement. Thus, the number of retransmission of MTC UE in low SNR could be further reduced, which in turn results in the improvement of the system throughput. Accordingly, it is possible for a UE with a low SNR to be used in LTE networks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.