METHOD AND APPARATUS OF MONITORING PDCCH IN WIRELESS COMMUNICATION SYSTEM

• US 20110143796A1
• Filed: 07/30/2009
• Published: 06/16/2011
• Est. Priority Date: 07/30/2008
• Status: Abandoned Application

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Ko, Hyun Soo, Han, Seung Hee, Lee, Moon Il, Chung, Jae Hoon, Kim, So Yeon
• Application Number:
  US13/056,451
• Publication Number:
  US 20110143796A1
• Time in Patent Office: Days
• US Class Current: 455/507
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 1/0031 Multiple signaling transmission H04L1/1664, F15 take precedence
• CPC Class Codes: H04L 1/0038 Blind format detection for detection of modulation format H04L27/0012
• CPC Class Codes: H04L 1/1861 Physical mapping arrangements for ACK signaling see also H04L5/0053
• CPC Class Codes: H04L 23/02 adapted for orthogonal signalling
• CPC Class Codes: H04L 27/2613 Structure of the reference signals
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04L 5/0057 Physical resource allocation for CQI
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated

Abstract

A method and an apparatus of monitoring a physical downlink control channel (PDCCH) in a wireless communication system, carried in a user equipment (UE), are provided. The method includes receiving a PDCCH map, and monitoring a set of PDCCH candidates based on the PDCCH map.

Claims

1-10. -10. (canceled)

11. A method of monitoring a physical downlink control channel (PDCCH) in a wireless communication system, carried in a user equipment (UE), the method comprising:

receiving, from a base station (BS), a PDCCH map comprising a monitoring set field indicating a monitoring set comprising N downlink (DL) component carriers (CCs) among L DL CCs, where L≧

N, L and N each is a natural number; and

monitoring a set of PDCCH candidates at each of the N DL CCs.

12. The method of claim 11, wherein the step of monitoring a set of PDCCH candidates includes:

decoding each PDCCH candidate; and

if a PDCCH candidate is successfully decoded, acquiring control information on the successfully decoded PDCCH candidate.

13. The method of claim 12, wherein the PDCCH candidate is successfully decoded if no CRC error is detected after de-masking the CRC of the PDCCH candidate with a UE'"'"'s identifier.

14. The method of claim 13, wherein the PDCCH map further comprises a CCE field, the CCE field indicating the Y CCE aggregation levels among X CCE aggregation levels, where X≧

Y, X and Y each is a natural number.

15. The method of claim 14, wherein the UE monitors the set of PDCCH candidates at each of Y control channel element (CCE) aggregation levels.

16. The method of claim 11, wherein the PDCCH map is received on a PDCCH.

17. The method of claim 11, wherein the PDCCH map is received through a specific DL CC among the L DL CCs.

18. The method of claim 11, wherein the PDCCH map is received through a DL CC, the DL CC being changed among the L DL CCs in accordance with a predefined rule.

19. The method of claim 11, wherein the PDCCH map is received via a radio resource control (RRC) message.

20. A UE comprising:

radio frequency (RF) unit transmitting and receiving a radio signal; and

a processor coupled with the RF unit and configured to receive, from a base station (BS), a PDCCH map comprising a monitoring set field indicating a monitoring set comprising N downlink (DL) component carriers (CCs) among L DL CCs, where L≧

N, L and N each is a natural number, and to monitor a set of PDCCH candidates at each of the N DL CCs.

21. The UE of claim 20, wherein the processor is further configured to;

decode each PDCCH candidate; and

if a PDCCH candidate is successfully decoded, acquire control information on the successfully decoded PDCCH candidate.

22. The UE of claim 21, wherein the PDCCH candidate is successfully decoded if no CRC error is detected after de-masking the CRC of the PDCCH candidate with the UE'"'"'s identifier.

23. The UE of claim 22, wherein the PDCCH map further comprises a CCE field, the CCE field indicating the Y CCE aggregation levels among X CCE aggregation levels, where X≧

Y, X and Y each is a natural number.

24. The UE of claim 23, wherein the processor monitors the set of PDCCH candidates at each of the Y control channel element (CCE) aggregation levels.

25. The UE of claim 20, wherein the PDCCH map is received on a PDCCH.

26. The UE of claim 20, wherein the PDCCH map is received through a specific DL CC among the L DL CCs.

27. The UE of claim 20, wherein the PDCCH map is received through a DL CC, the DL CC being changed among the L DL CCs in accordance with a predefined rule.

28. The UE of claim 20, wherein the PDCCH map is received via a radio resource control (RRC) message.