Method for transmitting signal for improving coverage and apparatus for same

Patent metadata

Field	Value
Publication number	US-10477535-B2
Application number	US-201815891743-A
Country	US
Kind code	B2
Filing date	Feb 8, 2018
Priority date	May 16, 2013
Publication date	Nov 12, 2019
Grant date	Nov 12, 2019

Abstract

The present invention relates to a wireless communication system. In particular, the present invention relates to a method and an apparatus for receiving data, by a terminal, in a wireless communication system, the method comprising the steps of: receiving a PDCCH; receiving a PDSCH corresponding to the PDCCH in a subframe including CSI-RS resource available in a cell; and demodulating the PDSCH. If a predetermined condition is satisfied, demodulation of the PDSCH is performed on the assumption that the PDSCH is not transmitted in the CSI-RS resource available in the cell, and if the predetermined condition is not satisfied, the demodulation of the PDSCH is performed on the assumption that the PDSCH can be transmitted in the CSI-RS resources available in the cell.

First claim

The invention claimed is:

1. A method for receiving data by a user equipment (UE) in a wireless communication system comprising:
receiving channel state information reference signal (CSI-RS) configuration information, wherein the CSI-RS configuration information informs the UE on a position of resource elements (REs) for CSI-RS in a configured time interval;
receiving a set of repeated physical downlink control channels (PDCCHs) on REs in a set of time intervals, wherein the set of repeated PDCCHs have the same control information, and the set of time intervals includes the configured time interval; and
receiving a physical downlink shared channel (PDSCH) corresponding to the set of repeated PDCCHs,
wherein, as for a repeated PDCCH in the configured time interval, the same control information is punctured on the REs for CSI-RS.

2. The method of claim 1 , wherein information related with the set of time intervals is received through system information.

3. The method of claim 1 , wherein the PDSCH is repeated on a set of time intervals.

4. The method of claim 1 , wherein the UE is a machine type communication UE.

5. A user equipment (UE) for use in a wireless communication system, the UE comprising:
a transmitter and receiver; and
a processor, wherein the processor is configured to control the receiver to:
receive channel state information reference signal (CSI-RS) configuration information, wherein the CSI-RS configuration information informs the UE on a position of resource elements (REs) for CSI-RS in a configured time interval;
receive a set of repeated physical downlink control channels (PDCCHs), on REs in the set of time intervals, wherein the set of repeated PDCCHs have the same control information, and the set of time intervals includes the configured time interval, and
receive a physical downlink shared channel (PDSCH) corresponding to the set of repeated PDCCHs,
wherein, as for a repeated PDCCH in the configured time interval, the same control information is punctured on the REs for CSI-RS.

6. The UE of claim 5 , wherein information related with the set of time intervals is received through system information.

7. The UE of claim 5 , wherein the PDSCH is repeated on a set of time intervals.

8. The UE of claim 5 , wherein the UE is a machine type communication UE.

9. A method for transmitting data by a base station (BS) in a wireless communication system, comprising:
transmitting channel state information reference signal (CSI-RS) configuration information, wherein the CSI-RS configuration information informs a UE on a position of resource elements (REs) for CSI-RS in a configured time interval;
transmitting a set of repeated physical downlink control channels (PDCCHs) on REs in a set of time intervals, wherein the set of repeated PDCCHs have the same control information, and the set of time intervals includes the configured time interval; and
transmitting a physical downlink shared channel (PDSCH) corresponding to the set of repeated PDCCHs,
wherein, as for a repeated PDCCH in the configured time interval, the same control information is punctured on the REs for CSI-RS.

10. The method of claim 9 , wherein information related with the set of time intervals is transmitted through system information.

11. The method of claim 9 , wherein the PDSCH is repeated on a set of time intervals.

12. A base station (BS) for use in a wireless communication system, the BS comprising:
a transmitter and receiver; and
a processor, wherein the processor is configured to control the transmitter to:
transmit channel state information reference signal (CSI-RS) configuration information, wherein the CSI-RS configuration information informs a UE on a position of resource elements (REs) for CSI-RS in a configured time interval;
transmit a set of repeated physical downlink control channels (PDCCHs), on REs in the set of time intervals, wherein the set of repeated PDCCHs have the same control information, and the set of time intervals includes the configured time interval, and
transmit a physical downlink shared channel (PDSCH) corresponding to the set of repeated PDCCHs,
wherein, as for a repeated PDCCH in the configured time interval, the same control information is punctured on the REs for CSI-RS.

13. The BS of claim 12 , wherein information related with the set of time intervals is transmitted through system information.

14. The BS of claim 12 , wherein the PDSCH is repeated on a set of time intervals.

Assignees

• Lg Electronics Inc

Inventors

• Yang Suckchel
• Yi Yunjung
• You Hyangsun
• Ahn Joonkui

Classifications

• H04W72/23 Primary

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04W72/30

  Resource management for broadcast services · CPC title

• H04W4/70

  Services for machine-to-machine communication [M2M] or machine type communication [MTC] · CPC title

• H04L27/2627

  Modulators · CPC title

• H04W48/16

  Discovering, processing access restriction or access information · CPC title