METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING A SIGNAL IN A WIRELESS COMMUNICATION SYSTEM THAT SUPPORTS PLURAL COMPONENT CARRIERS

• US 20120243498A1
• Filed: 07/14/2010
• Published: 09/27/2012
• Est. Priority Date: 12/07/2009
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kwon, Yeong Hyeon, Kim, So Yeon, Moon, Sung Ho, Chung, Jae Hoon, Han, Seung Hee
• Granted Patent: US 9,385,849 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04L 5/00 Arrangements affording multiple use of the transmission path
• 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 5/0091 Signaling for the administration of the divided path

Abstract

The present invention relates to a method for receiving a terminal signal in a wireless communication system that supports plural component carriers, the method comprising: receiving a subframe including a plurality of OFDM symbols from a base station (BS); and receiving identification information indicative of a particular component carrier, from one or more consecutive OFDM symbols located at the front of the subframe, wherein the identification information indicative of the particular component carrier includes a carrier offset value with respect to a reference component carrier.

Claims

1-20. -20. (canceled)

21. A method for receiving a signal by a user equipment (UE) in a wireless communication system supporting multiple component carriers (CCs), the method comprising:

receiving a subframe including a plurality of OFDM symbols from a base station (BS); and

receiving, within one or more contiguous OFDM symbols located in the front of the subframe, identification information indicating a value used to identify a related component carrier (CC),

wherein the value is same as a difference between an index related with the related component carrier and an index related with a specific component carrier.

22. The method according to claim 21, wherein the identification information of the carrier is transmitted through a carrier indication field (CIF).

23. The method according to claim 21, further comprising:

receiving index mapping information related to an index mapping rule of multiple component carriers used in the user equipment according to carrier scheduling, from the base station,

wherein the user equipment obtains location information of the carrier using the index mapping information and identification information of the carrier.

24. The method according to claim 23, wherein the index mapping rule of the multiple component carriers includes a sequentially indexed mapping rule in which indexing is performed considering whether the multiple component carriers correspond to uplink or downlink, and an arbitrarily indexed mapping rule in which indexing is performed without discriminating between uplink and downlink.

25. The method according to claim 21, further comprising:

if the carrier scheduling of the base station is performed in units of a carrier group,

performing a reinterpretation process in which the identification information indicating the component carrier contained in a first component carrier (CC) group indicates a component carrier (CC) contained in a second component carrier group.

26. A method for transmitting a signal by a base station (BS) in a wireless communication system supporting multiple component carriers (CCs), the method comprising:

scheduling a plurality of component carriers used by the user equipment; and

transmitting, within one or more contiguous OFDM symbols located in the front of the subframe, identification information indicating a value used to identify a related component carrier (CC),

wherein the value is same as a difference between an index related with the related component carrier and an index related with a specific component carrier.

27. The method according to claim 26, wherein the identification information of the carrier is transmitted through a carrier indication field (CIF).

28. The method according to claim 26, further comprising transmitting index mapping information related to an index mapping rule of multiple component carriers depending on carrier scheduling, to the user equipment.

29. The method according to claim 28, wherein the index mapping rule of the multiple component carriers includes a sequentially indexed mapping rule in which indexing is performed considering whether the multiple component carriers correspond to uplink or downlink, and an arbitrarily indexed mapping rule in which indexing is performed without discriminating between uplink and downlink.

30. The method according to claim 26, further comprising:

if the carrier scheduling of the user equipment (UE) is performed in units of a carrier group,

performing a reinterpretation process in which the identification information indicating the component carrier contained in a first component carrier (CC) group indicates a component carrier (CC) contained in a second component carrier group.

31. A user equipment (UE) for use in a wireless communication system supporting multiple carriers, the user equipment (UE) comprising:

a reception module for receiving a radio frequency (RF) signal; and

a processor, through the reception module, for receiving identification information indicating a value used to identify a related component carrier from one or more contiguous OFDM symbols located in the front of a subframe including a plurality of OFDM symbols received from a base station (BS), acquiring location information of the component carrier using index mapping information related to an index mapping rule of multiple component carriers used in the user equipment, and transmitting and receiving a signal through the component carrier,

wherein the value is same as a difference between an index related with the related component carrier and an index related with a specific component carrier.

32. The user equipment (UE) according to claim 31, wherein the processor determines whether the component carrier corresponds to uplink or downlink using the index mapping information and identification information of the component carrier.

33. The user equipment (UE) according to claim 31, wherein:

if the carrier scheduling of the base station is performed in units of a carrier group, the processor performs a reinterpretation process in which the identification information indicating the component carrier contained in a first component carrier (CC) group indicates a component carrier (CC) contained in a second component carrier group.

34. The user equipment (UE) according to claim 32, wherein the index mapping rule of the multiple component carriers includes a sequentially indexed mapping rule in which indexing is performed considering whether the multiple component carriers correspond to uplink or downlink, and an arbitrarily indexed mapping rule in which indexing is performed without discriminating between uplink and downlink.

35. A base station (BS) for use in a wireless communication system supporting multiple carriers, the base station (BS) comprising:

a transmission module for transmitting a radio frequency (RF) signal; and

a processor for mapping indexes of multiple component carriers used in the user equipment (UE) according to carrier scheduling, and constructing identification information indicating a value used to identify a related component carrier from among the multiple component carriers,

wherein the processor is for transmitting, through the transmission module, the identification information and index mapping information of the multiple component carriers to the user equipment (UE) through one or more contiguous OFDM symbols located in the front of a subframe including the plurality of OFDM symbols, and

wherein the value is same as a difference between an index related with the related component carrier and an index related with a specific component carrier.

36. The base station (BS) according to claim 35, wherein the index mapping rule of the multiple component carriers includes a sequentially indexed mapping rule in which indexing is performed considering whether the multiple component carriers correspond to uplink or downlink, and an arbitrarily indexed mapping rule in which indexing is performed without discriminating between uplink and downlink.