METHOD FOR TRANSMITTING AND RECEIVING SIGNAL IN MULTIPLE CELL-BASED WIRELESS COMMUNICATION SYSTEM, AND APPARATUS FOR SAME

• US 20150304997A1
• Filed: 03/26/2014
• Published: 10/22/2015
• Est. Priority Date: 03/26/2013
• Status: Abandoned Application

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Park, Jonghyun, Kim, Kijun, Yang, Suckchel
• Application Number:
  US14/442,065
• Publication Number:
  US 20150304997A1
• Time in Patent Office: Days
• 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: H04B 7/0639 Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
• CPC Class Codes: H04J 11/00 Orthogonal multiplex systems, e.g. using WALSH codesH04J13/00 takes precedence
• CPC Class Codes: H04L 23/00 Apparatus or local circuits for systems other than those covered by groups H04L15/00 - H04L21/00
• CPC Class Codes: H04L 25/03929 with layer mapping, e.g. codeword-to layer design for space-time coding H04L1/0618
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• CPC Class Codes: H04L 5/0035 Resource allocation in a cooperative multipoint environment
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

The present application discloses a method for receiving a signal by a user equipment in a multiple cell-based wireless communication system. Specifically, the method comprises the steps of: configuring a plurality of parameter sets for receiving a downlink data channel through an upper layer; receiving control information for receiving a downlink data channel from a serving cell; and receiving a downlink data channel including a plurality of code words from at least one of the serving cell and an adjacent cell through a plurality of layer groups, based on the control information, wherein one layer group corresponds to one code word, the control information includes layer group information for each of the plurality of layer groups, and the layer group information includes information indicating one of the plurality of parameter sets.

Claims

1. A method for receiving a signal by a user equipment in a multi-cell based wireless communication system, the method comprising:

configuring a plurality of parameter sets for receiving a downlink data channel through a higher layer;

receiving control information for receiving the downlink data channel from a serving cell; and

receiving the downlink data channel including a plurality of codewords through a plurality of layer groups from at least one of the serving cell and a neighboring cell based on the control information,

wherein one layer group corresponds to one codeword,

wherein the control information includes layer group information for each of the layer groups, and

wherein the layer group information includes information indicating one of the parameter sets.

2. The method according to claim 1,

wherein each of the layer groups includes one or more layers, and

wherein the layer group information includes information for mapping the one codeword to one or more layers.

3. The method according to claim 2,

wherein first reference signals for the downlink data channel are defined as different antenna ports,

wherein the first reference signals mapped to different layer groups are mapped to the one or more layers through frequency division multiplexing, and

wherein the first reference signals mapped to the same layer group are mapped to the one or more layers through code division multiplexing.

4. The method according to claim 1,

wherein the parameter sets include information about a second reference signal assumed to have the same large-scale properties as a first reference signal for the downlink data channel.

5. The method according to claim 4,

wherein the large-scale properties include at least one of Doppler spread, Doppler shift, average delay, and delay spread.

6. The method according to claim 4,

wherein the information about the second reference signal included in each of the layer group information is different.

7. The method according to claim 6,

wherein first reference signals for the downlink data channel are generated based on different cell identifiers for the respective layer groups.

8. A user equipment in a multi-cell based wireless communication system, the user equipment comprising:

a wireless communication module for transmitting and receiving a signal to and from a base station; and

a processor for processing the signal,

wherein the processor configures a plurality of parameter sets for receiving a downlink data channel through a higher layer and controls the wireless communication module to receive control information for receiving the downlink data channel from a serving cell and receive the downlink data channel including a plurality of codewords through a plurality of layer groups from at least one of the serving cell and a neighboring cell based on the control information, and

wherein one layer group corresponds to one codeword, the control information includes layer group information for each of the layer groups, and the layer group information includes information indicating one of the parameter sets.

11. The user equipment according to claim 8,

wherein the parameter sets include information about a second reference signal assumed to have the same large-scale properties as a first reference signal for the downlink data channel.

12. The user equipment according to claim 11,

wherein the large-scale properties include at least one of Doppler spread, Doppler shift, average delay, and delay spread.

13. The user equipment according to claim 11,

wherein information about the second reference signal included in each of the layer group information is different.

14. The user equipment according to claim 13,

wherein first reference signals for the downlink data channel are generated based on different cell identifiers for the respective layer groups.

9. The user equipment according to claim 9,

wherein each of the layer groups includes one or more layers, and

wherein the layer group information includes information for mapping the one codeword to one or more layers.

10. The user equipment according to claim 9,

wherein first reference signals for the downlink data channel are defined as different antenna ports,

wherein the first reference signals mapped to different layer groups are mapped to the one or more layers through frequency division multiplexing, and

wherein the first reference signals mapped to the same layer group are mapped to the one or more layers through code division multiplexing.