METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING DATA IN WIRELESS COMMUNICATION SYSTEM

• US 20130094442A1
• Filed: 09/28/2012
• Published: 04/18/2013
• Est. Priority Date: 09/30/2011
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: KIM, Youn-Sun, JI, Hyoung-Ju, LEE, Hyo-Jin, KIM, Young-Bum, LEE, Ju-Ho, CHO, Joon-Young, CHOI, Seung-Hoon, SHAN, Cheng, SAYANA, Krishna, KWAK, Yong-Jun
• Granted Patent: US 11,323,984 B2
• Time in Patent Office: Days
• US Class Current: 370/328
• 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 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management

Abstract

A User Equipment (UE) in a wireless communication system using a Coordinated Multi-Point transmission/reception (CoMP) scheme receives Downlink Control Information (DCI) including CoMP control information, determines a starting position of a data channel on wireless resources, based on starting position information of a data channel included in the CoMP control information and used in each of a plurality of cells, and receives data from the plurality of cells starting from the determined starting position.

Claims

1. A method for receiving data by a User Equipment (UE) in a wireless communication system using a Coordinated Multi-Point transmission/reception (CoMP) scheme, the method comprising:

receiving Downlink Control Information (DCI) including CoMP control information;

determining a starting position of a data channel on wireless resources based on starting position information included in the CoMP control information and used in each of a plurality of cells; and

receiving data from the plurality of cells starting from the determined starting position.

2. The method of claim 1, wherein the CoMP control information further includes at least one of Cell-specific Reference Signal (CRS) resource information corresponding to each of the plurality of cells and Multicast Broadcast Single Frequency Network (MBSFN) subframe configuration information corresponding to each of the plurality of cells, and

wherein the CRS resource information corresponding to each of the plurality of cells includes information about a number of CRS antenna ports used in each of the plurality of cells and information about a CRS frequency domain offset.

3. The method of claim 1, wherein the CoMP control information includes index information corresponding to at least one of the starting position information of a data channel used in each of the plurality of cells, CRS resource information corresponding to each of the plurality of cells, and MBSFN subframe information corresponding to each of the plurality of cells.

4. The method of claim 1, wherein the starting position information of a data channel used in each of the plurality of cells includes size information of a control region determined by a Physical Control Format Indicator CHannel (PCFICH) used in each of the plurality of cells.

5. The method of claim 1, further comprising:

when a Carrier Indicator Field (CIF), indicated by a carrier to be used by the UE among a plurality of carriers, is included in the DCI, determining the starting position of a data channel on wireless resources based on the CIF instead of the CoMP control information, and

wherein determining the starting position of a data channel on wireless resources based on the CIF comprises determining the starting position of a data channel on wireless resources, based on at least one of CRS resource information indicated by the CIF, MBSFN subframe information indicated by the CIF, and starting position information of a data channel indicated by the CIF and used in each of the plurality of cells.

6. A method for transmitting data by an enhanced Node B (eNB) in a wireless communication system using a Coordinated Multi-Point transmission/reception (CoMP) scheme, the method comprising:

generating CoMP control information including starting position information of a data channel on wireless resources used in each of a plurality of cells;

transmitting the CoMP control information and Downlink Control Information (DCI) to a User Equipment (UE); and

transmitting data to the UE starting from a starting position of a data channel on wireless resources.

7. The method of claim 6, wherein the CoMP control information further includes at least one of Cell-specific Reference Signal (CRS) resource information corresponding to each of the plurality of cells and Multicast Broadcast Single Frequency Network (MBSFN) subframe configuration information corresponding to each of the plurality of cells, and

wherein the CRS resource information corresponding to each of the plurality of cells includes information about a number of CRS antenna ports used in each of the plurality of cells and information about a CRS frequency domain offset.

8. The method of claim 6, wherein the CoMP control information includes index information corresponding to at least one of the starting position information of a data channel used in each of the plurality of cells, CRS resource information corresponding to each of the plurality of cells, and MBSFN subframe information corresponding to each of the plurality of cells.

9. The method of claim 6, wherein the starting position information of a data channel used in each of the plurality of cells, includes size information of a control region determined by a Physical Control Format Indicator CHannel (PCFICH) used in each of the plurality of cells.

10. The method of claim 6, wherein the DCI further includes a Carrier Indicator Field (CIF) indicating a carrier to be used by the UE among a plurality of carriers, and

wherein the CIF indicates at least one of CRS resource information, MBSFN subframe information, and the starting position information of a data channel used in each of the plurality of cells.

11. A User Equipment (UE) apparatus in a wireless communication system using a Coordinated Multi-Point transmission/reception (CoMP) scheme, the UE apparatus comprising:

a reception unit configured to receive Downlink Control Information (DCI) including CoMP control information; and

a controller configured to determine a starting position of a data channel on wireless resources based on starting position information included in the CoMP control information and used in each of a plurality of cells, and control the reception unit to receive data from the plurality of cells starting from the determined starting position.

12. The UE apparatus of claim 11, wherein the CoMP control information further includes at least one of Cell-specific Reference Signal (CRS) resource information corresponding to each of the plurality of cells and Multicast Broadcast Single Frequency Network (MBSFN) subframe configuration information corresponding to each of the plurality of cells, and

wherein the CRS resource information corresponding to each of the plurality of cells includes information about a number of CRS antenna ports used in each of the plurality of cells and information about a CRS frequency domain offset.

13. The UE apparatus of claim 11, wherein the CoMP control information includes index information corresponding to at least one of the starting position information of a data channel used in each of the plurality of cells, CRS resource information corresponding to each of the plurality of cells, and MBSFN subframe information corresponding to each of the plurality of cells.

14. The UE apparatus of claim 11, wherein the starting position information of a data channel used in each of the plurality of cells, includes size information of a control region determined by a Physical Control Format Indicator CHannel (PCFICH) used in each of the plurality of cells.

15. The UE apparatus of claim 11, wherein when a Carrier Indicator Field (CIF) indicating a carrier to be used by the UE among a plurality of carriers is included in the DCI, the controller determines a starting position of a data channel on wireless resources based on the CIF instead of the CoMP control information, and

wherein the controller determines the starting position of a data channel on wireless resources, based on at least one of CRS resource information indicated by the CIF, MBSFN subframe information indicated by the CIF, and the starting position information of a data channel indicated by the CIF and used in each of the plurality of cells.

16. An enhanced Node B (eNB) apparatus in a wireless communication system using a Coordinated Multi-Point transmission/reception (CoMP) scheme, the eNB apparatus comprising:

a transmission unit; and

a controller for generating CoMP control information including starting position information of a data channel used in each of a plurality of cells, and controlling the transmission unit to transmit the CoMP control information and Downlink Control Information (DCI) to a User Equipment (UE) and to transmit data to the UE starting from a starting position of a data channel on wireless resources.

17. The eNB apparatus of claim 16, wherein the CoMP control information further includes at least one of Cell-specific Reference Signal (CRS) resource information corresponding to each of the plurality of cells and Multicast Broadcast Single Frequency Network (MBSFN) subframe configuration information corresponding to each of the plurality of cells, and

wherein the CRS resource information corresponding to each of the plurality of cells includes information about a number of CRS antenna ports used in each of the plurality of cells and information about a CRS frequency domain offset.

18. The eNB apparatus of claim 16, wherein the CoMP control information includes index information corresponding to at least one of the starting position information of a data channel used in each of the plurality of cells, CRS resource information corresponding to each of the plurality of cells, and MBSFN subframe information corresponding to each of the plurality of cells.

19. The eNB apparatus of claim 16, wherein the starting position information of a data channel used in each of the plurality of cells, includes size information of a control region determined by a Physical Control Format Indicator CHannel (PCFICH) used in each of the plurality of cells.

20. The eNB apparatus of claim 16, wherein the DCI further includes a Carrier Indicator Field (CIF) indicating a carrier to be used by the UE among a plurality of carriers, and

wherein the CIF indicates at least one of CRS resource information, MBSFN subframe information, and the starting position information of a data channel used in each of the plurality of cells.