Method for receiving downlink data channels in multicell-based wireless communication systems and apparatus for same

• US 9,544,110 B2
• Filed: 02/12/2013
• Issued: 01/10/2017
• Est. Priority Date: 02/11/2012
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Park, Jonghyun, Sohn, Illsoo, Kim, Kijun, Seo, Hanbyul
• Primary Examiner(s): Sheikh, Ayaz
• Assistant Examiner(s): CHAU, PETER P
• Application Number:
  US14/373,184
• Publication Number:
  US 20150016369A1
• Time in Patent Office: 1,428 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: H04B 7/024 Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
• CPC Class Codes: H04L 1/1861 Physical mapping arrangements for ACK signaling see also H04L5/0053
• CPC Class Codes: H04L 5/0035 Resource allocation in a cooperative multipoint environment
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0091 Signaling for the administration of the divided path
• CPC Class Codes: H04W 72/1273 of downlink data flows
• CPC Class Codes: H04W 88/02 Terminal devices

Abstract

The present invention relates to a method by which a terminal receives a downlink data channel based on a terminal-specific reference signal in a wireless communication system. In detail, the method includes the steps of: receiving from a network information on one or more settings defining large scale properties of a terminal-specific reference signal through a higher layer; detecting from the network scheduling information on a downlink data channel based on a terminal-specific reference signal; and receiving from the network the downlink data channel based on the terminal-specific reference signal on the basis of the scheduling information, wherein the scheduling information includes an indicator indicating one or more of the settings.

Claims

1. A method for receiving a user equipment (UE) specific reference signal based-downlink data channel at a UE in a wireless communication system, the method comprising:

receiving, by the UE, one or more configurations including information on a certain reference signal which is assumed to be quasi co-located with a UE-specific reference signal from a network via an upper layer;

detecting, by the UE, scheduling information of the UE-specific reference signal based-downlink data channel from the network; and

receiving, by the UE, specific reference signal based-downlink data channel from the network based on the scheduling information,

wherein the scheduling information comprises an indicator indicating one of the one or more configurations, and

wherein a large scale property for the UE-specific reference signal is obtained based on the certain reference signal which is assumed to be quasi co-located with the UE-specific reference signal.

2. The method of claim 1, wherein the certain reference signal is a channel status information-reference signal (CSI-RS).

3. The method of claim 1, wherein the information on the certain reference signal indicates a resource configuration of the certain reference signal.

4. The method of claim 1, wherein the large scale property comprises at least one of Doppler spread, Doppler shift, average delay and delay spread.

5. A method for transmitting a user equipment (UE)-specific reference signal based-downlink data channel at a base station in a wireless communication system, the method comprising:

transmitting, by the base station, one or more configurations including information on a certain reference signal which is assumed to be quasi co-located with a UE-specific reference signal to a UE via an upper layer;

transmitting, by the base station, scheduling information of the UE-specific reference signal based-downlink data channel to the UE; and

transmitting, by the base station, the UE-specific reference signal based-downlink data channel to the UE which receives the UE-specific reference signal based-downlink data channel from the base station based on the scheduling information,

wherein the scheduling information comprises an indicator indicating one of the one or more configurations, and

wherein a large scale property for the UE-specific reference signal is obtained based on the certain reference signal which is assumed to be quasi co-located with the UE-specific reference signal.

6. The method of claim 5, wherein the certain reference signal is a channel status information-reference signal (CSI-RS).

7. The method of claim 5, wherein the information on the certain reference signal indicates a resource configuration of the certain reference signal.

8. The method of claim 5, wherein the large scale property comprises at least one of Doppler spread, Doppler shift, average delay and delay spread.