Method and apparatus for receiving or transmitting downlink control signal in wireless communication system

• US 10,602,499 B2
• Filed: 01/18/2018
• Issued: 03/24/2020
• Est. Priority Date: 10/18/2012
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lee, Jihyun, Lee, Seungmin, Kim, Hakseong, Seo, Hanbyul, Kim, Bonghoe
• Primary Examiner(s): Masur, Paul H
• Assistant Examiner(s): Phillips, Michael K
• Application Number:
  US15/874,736
• Publication Number:
  US 20180146460A1
• Time in Patent Office: 796 Days
• CPC Class Codes: H04J 11/00 Orthogonal multiplex systems, e.g. using WALSH codesH04J13/00 takes precedence
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

Provided is a method for receiving a downlink signal by a user equipment (UE) in a wireless communication system according to one embodiment of the present disclosure, comprising: receiving a plurality of parameter sets for Semi Persistent Scheduling (SPS)-physical downlink shared channel (PDSCH) through higher layer signaling; receiving a downlink control information (DCI) configuring the SPS-PDSCH; and decoding the SPS-PDSCH using one of the received plurality of parameter sets, wherein the parameter set to be used for decoding is determined based on whether an indicator indicating the parameter set to be used for decoding is included in the DCI.

Claims

1. A method for a user equipment (UE) in a wireless communication system, comprising:

obtaining a plurality of parameter sets for a Semi Persistent Scheduling (SPS)-physical downlink shared channel (PDSCH) through higher layer signaling;

receiving a downlink control information (DCI), wherein the DCI comprises information on the SPS-PDSCH;

determining a starting symbol position of the SPS-PDSCH based on a parameter set among the plurality of parameter sets;

based on that the DCI is a first DCI format including an indicator, decoding the SPS-PDSCH using a parameter set indicated by the indicator from among the plurality of parameter sets; and

based on that the DCI is a second DCI format not including the indicator, decoding the SPS-PDSCH using a predetermined parameter set from among the plurality of parameter sets,

wherein each of the plurality of parameter sets includes information regarding the starting symbol position of the SPS-PDSCH.

2. The method according to claim 1,

wherein the DCI is received through an enhanced physical downlink control channel (EPDCCH), and

wherein the starting symbol position of the SPS-PDSCH is different from a starting symbol position of the EPDCCH.

3. The method according to claim 1, wherein the UE is scheduled to receive two or more EPDCCHs in a subframe.

4. The method according to claim 3, wherein the two or more EPDCCHs are transmitted from different transmission points or different evolved Node B.

5. The method according to claim 1, wherein each of the plurality of parameter sets includes resource element (RE) mapping pattern information related to specific reference signal(s).

6. The method according to claim 1, wherein:

if the SPS-PDSCH is received in a MBSFN (Multimedia Broadcast multicast service Single Frequency Network) subframe, the starting symbol position of the SPS-PDSCH is restricted to a starting symbol position of a downlink data channel of the MBSFN subframe.

7. The method according to claim 1, wherein the user equipment (UE) is configured in transmission mode 10.

8. The method according to claim 1, wherein the determined parameter set is used for decoding the SPS-PDSCH until receiving a new DCI configuring SPS.

9. The method according to claim 1, the DCI is received through an EPDCCH.

10. A method for a user equipment (UE) in a wireless communication system, performed by an eNodeB (evolved Node B) and comprising:

transmitting a plurality of parameter sets for a Semi Persistent Scheduling (SPS)-physical downlink shared channel (PDSCH) through higher layer signaling; and

transmitting a downlink control information (DCI), wherein the DCI comprises information on the SPS-PDSCH,

wherein based on that the DCI is a first DCI format including an indicator, a parameter set indicated by the indicator from the plurality of parameter sets is used for the UE to decode the SPS-PDSCH, and

wherein based on that the DCI is a second DCI format not including the indicator, a predetermined parameter set from among the plurality of parameter sets is used for the UE to decode the SPS-PDSCH, and

wherein a parameter set among the plurality of parameter sets is used for the UE to determine a starting symbol position of the SPS-PDSCH, and

wherein each of the plurality of parameter sets includes information regarding the starting symbol position of the SPS-PDSCH.

11. The method according to claim 10, wherein the DCI is transmitted through an enhanced physical downlink control channel (EPDCCH), and

wherein the starting symbol position of the SPS-PDSCH is different from a starting symbol position of the EPDCCH.

12. The method according to claim 10, wherein the UE is scheduled to receive two or more EPDCCHs in a subframe.

13. The method according to claim 12, wherein the two or more EPDCCHs are transmitted from different transmission points or different eNodeB.

14. The method according to claim 10, wherein each of the plurality of parameter sets includes resource element (RE) mapping pattern information related to specific reference signal(s).

15. The method according to claim 10, wherein:

if the SPS-PDSCH is transmitted in a MBSFN (Multimedia Broadcast multicast service Single Frequency Network) subframe, the starting symbol position of the SPS-PDSCH is restricted to a starting symbol position of a downlink data channel of the MBSFN subframe.

16. The method according to claim 10, wherein the user equipment (UE) is configured in transmission mode 10.

17. The method according to claim 10, wherein the determined parameter set is used for decoding the SPS-PDSCH until receiving a new DCI configuring SPS.

18. The method according to claim 10, the DCI is transmitted through an EPDCCH.

19. A user equipment (UE) for a wireless communication system, comprising:

a radio frequency (RF) unit; and

a processor that controls the RF unit,

wherein the processor is configured to;

obtain a plurality of parameter sets for a Semi Persistent Scheduling (SPS)-physical downlink shared channel (PDSCH) through higher layer signaling,

receive a downlink control information (DCI), wherein the DCI comprises information on the SPS-PDSCH,

determine a starting symbol position of the SPS-PDSCH based on a parameter set among the plurality of parameter sets,

based on that the DCI is a first DCI format including an indicator, decode the SPS-PDSCH using a parameter set indicated by the indicator from among the plurality of parameter sets, and

based on that the DCI is a second DCI format not including the indicator, decode the SPS-PDSCH using a predetermined parameter set from among the plurality of parameter sets,

wherein each of the plurality of parameter sets includes information regarding the starting symbol position of the SPS-PDSCH.

20. An evolved Node B (eNB) for a wireless communication system, comprising:

a radio frequency (RF) unit; and

a processor that controls the RF unit,

wherein the processor is configured to;

transmit a plurality of parameter sets for a Semi Persistent Scheduling (SPS)-physical downlink shared channel (PDSCH) through higher layer signaling; and

transmit a downlink control information (DCI), wherein the DCI comprises information on the SPS-PDSCH,

wherein based on that the DCI is a first DCI format including an indicator, a parameter set indicated by the indicator from the plurality of parameter sets is used for the UE to decode the SPS-PDSCH, and

wherein based on that the DCI is a second DCI format not including the indicator, a predetermined parameter set from among the plurality of parameter sets is used for the UE to decode the SPS-PDSCH, and

wherein a parameter set among the plurality of parameter sets is used for the UE to determine a starting symbol position of the SPS-PDSCH, and

wherein each of the plurality of parameter sets includes information regarding a starting symbol position of the SPS-PDSCH.