Method and apparatus for transmitting and receiving a signal in a wireless communication system that supports plural component carriers
First Claim
1. 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, by the UE from a base station (BS), information including an index of a reference CC which is UE-specifically determined by the BS among the multiple CCs so that the reference CC can be different between different UEs located in a cell;
receiving, by the UE, a subframe including a plurality of orthogonal frequency division multiplexing (OFDM) symbols from the BS; and
receiving, by the UE through one or more contiguous OFDM symbols within the subframe from the BS, scheduling information associated with a specific component carrier (CC) allocated to the UE, and a carrier indication field (CIF) which includes an offset value used to identify the specific CC,wherein a first part and a second part of all values to be represented by the CIF have been pre-allocated for downlink CCs and uplink CCs, respectively, so that the CIF is also used to identify whether the specific CC is either a downlink CC or an uplink CC, andwherein the offset value is equal to a difference between an index of the specific CC and the index of the reference CC.
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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.
8 Citations
11 Claims
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1. A method for receiving a signal by a user equipment (UE) in a wireless communication system supporting multiple component carriers (CCs), the method comprising:
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receiving, by the UE from a base station (BS), information including an index of a reference CC which is UE-specifically determined by the BS among the multiple CCs so that the reference CC can be different between different UEs located in a cell; receiving, by the UE, a subframe including a plurality of orthogonal frequency division multiplexing (OFDM) symbols from the BS; and receiving, by the UE through one or more contiguous OFDM symbols within the subframe from the BS, scheduling information associated with a specific component carrier (CC) allocated to the UE, and a carrier indication field (CIF) which includes an offset value used to identify the specific CC, wherein a first part and a second part of all values to be represented by the CIF have been pre-allocated for downlink CCs and uplink CCs, respectively, so that the CIF is also used to identify whether the specific CC is either a downlink CC or an uplink CC, and wherein the offset value is equal to a difference between an index of the specific CC and the index of the reference CC. - View Dependent Claims (2, 3)
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4. A method for transmitting a signal by a base station (BS) in a wireless communication system supporting multiple component carriers (CCs), the method comprising:
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transmitting, by the BS, information including an index of a reference CC which is user equipment (UE)-specifically determined by the BS among the multiple CCs so that the reference CC can be different between different UEs located in a cell; scheduling, by the BS, a plurality of CCs used by a UE; and transmitting, by the BS through one or more contiguous orthogonal frequency division multiplexing (OFDM) symbols within a subframe to the UE, scheduling information associated with a specific CC allocated to the UE, and a carrier indication field (CIF) which includes an offset value used to identify the specific CC, wherein a first part and a second part of all values to be represented by the CIF have been pre-allocated for downlink CCs and uplink CCs, respectively, so that the CIF is also used to identify whether the specific CC is either a downlink CC or an uplink CC, and wherein the offset value is equal to a difference between an index of the specific CC and the index of the reference CC. - View Dependent Claims (5, 6)
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7. A user equipment (UE) for use in a wireless communication system supporting multiple carriers, the UE comprising:
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a receiver configured to receive a radio frequency (RF) signal; and a processor configured to; receive, through the receiver, information including an index of a reference component carrier (CC) which is UE-specifically determined by a base station (BS) among multiple CCs so that the reference CC can be different between different UEs located in a cell, scheduling information associated with a specific CC allocated to the UE, and a carrier indication field (CIF) which includes an offset value used to identify the specific CC through one or more contiguous orthogonal frequency division multiplexing (OFDM) symbols within a subframe including a plurality of OFDM symbols received from the BS, wherein a first part and a second part of all values to be represented by the CIF have been pre-allocated for downlink CCs and uplink CCs, respectively, so that the CIF is also used to identify whether the specific CC is either a downlink CC or an uplink CC, acquire location information of the specific CC using index mapping information related to an index mapping rule of multiple CCs used in the UE, and transmit and receive a signal through the specific CC, wherein the offset value is equal to a difference between an index of the specific CC and the index of the reference CC. - View Dependent Claims (8, 9)
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10. A base station (BS) for use in a wireless communication system supporting multiple carriers, the BS comprising:
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a transmitter configured to transmit a radio frequency (RF) signal; and a processor configured to; map indexes of multiple component carriers (CCs) used in a user equipment (UE) according to carrier scheduling, and construct scheduling information associated with a specific CC allocated to the UE, and a carrier indication field (CIF) which includes an offset value used to identify the specific CC among the multiple CCs, wherein the processor is further configured to transmit, through the transmitter, information including an index of a reference CC which is user equipment (UE)-specifically determined by the processor among the multiple CCs so that the reference CC can be different between different UEs located in a cell, the scheduling information, the CIF and index mapping information of the multiple CCs to the UE through one or more contiguous orthogonal frequency division multiplexing (OFDM) symbols within a subframe including a plurality of OFDM symbols, wherein a first part and a second part of all values to be represented by the CIF have been pre-allocated for downlink CCs and uplink CCs, respectively, so that the CIF is also used to identify whether the specific CC is either a downlink CC or an uplink CC, and wherein the offset value is equal to a difference between an index of the specific CC and the index of the reference CC. - View Dependent Claims (11)
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Specification