Abstract
Methods and apparatus are provided for receiving a physical downlink control channel in a wireless communication system. The physical downlink control channel is received. The physical downlink control channel is decoded. A scheduling type is determined using scheduling type information in the physical downlink control channel. Scheduling information is determined for a data channel according to the scheduling type.
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Claim
1. A method for receiving a physical downlink control channel in a wireless communication system, the method comprising the steps of:
receiving, by a user equipment (UE), control information on the physical downlink control channel;
decoding, by the UE, the control information;
determining a scheduling type using scheduling type information indicating the scheduling type in the control information; and
determining, by the UE, a resource allocation for an acknowledgement/negative acknowledgement (ACK/NACK) transmission using one of a control channel element (CCE) index and information configured by higher layers, the one of the CCE index and the information configured by higher layers being determined based on the scheduling type.
2. The method of claim 1, wherein the scheduling type is non-persistent scheduling or persistent scheduling.
3. The method of claim 1, wherein the control information comprises resource information indicating resources for a data channel, a modulation and coding scheme (MCS) of the data channel, and hybrid automatic repeat request (HARQ) information.
4. The method of claim 1, further comprising:
receiving data on a data channel; and
transmitting the ACK/NACK using the determined resource allocation.
5. The method of claim 4, wherein transmitting the ACK/NACK comprises:
transmitting the ACK/NACK based on the CCE index, when the scheduling type is non-persistent scheduling; and
transmitting the ACK/NACK based on the information configured by higher layers, when the scheduling type is persistent scheduling.
6. An apparatus for receiving a physical downlink control channel in a wireless communication system, the apparatus comprising:
a receiver which receives control information on the physical downlink control channel;
a decoder which decodes the control information, determine a scheduling type using scheduling type information indicating the scheduling type in the control information, and determine a resource allocation for an acknowledgement/negative acknowledgement (ACK/NACK) transmission using one of a control channel element (CCE) index and information configured by higher layers, the one of the CCE index and the information configured by higher layers being determined based on the scheduling type.
7. The apparatus of claim 6, wherein the scheduling type is non-persistent scheduling or persistent scheduling.
8. The apparatus of claim 6, wherein the control information comprises resource information indicating resources allocated for a data channel, a modulation and coding scheme (MCS) of the data channel, and hybrid automatic repeat request (HARQ) information.
9. The apparatus of claim 6, wherein the receiver is further configured to receive data on a data channel; and
further comprising a transmitter configured to transmit the ACK/NACK using the determined resource allocation.
10. The apparatus of claim 9, wherein the transmitter is further configured to transmit the ACK/NACK based on the CCE index when the scheduling type is non-persistent scheduling, and transmit the ACK/NACK based on the information configured by higher layers when the scheduling type is persistent scheduling.
11. A method for transmitting a physical downlink control channel in a wireless communication system, the method comprising the steps of
transmitting, by a node B, control information on the physical downlink control channel,
wherein the control information of the physical downlink control channel comprises scheduling type information indicating a scheduling type and a resource allocation for an acknowledgement/negative acknowledgement (ACK/NACK) transmission using one of a control channel element (CCE) index and information configured by higher layers, the one of the CCE index and the information configured by higher layers being determined based on the scheduling type,
wherein the scheduling type information is used for decoding the control information of the physical downlink control channel.
12. The method of claim 11, wherein the scheduling type is non-persistent scheduling or persistent scheduling.
13. The method of claim 11, wherein the control information comprises resource information indicating resources for a data channel, a modulation and coding scheme (MCS) of the data channel, and hybrid automatic repeat request (HARQ) information.
14. The method of claim 11, further comprising:
transmitting data on a data channel; and
receiving the ACK/NACK using the determined resource allocation.
15. The method of claim 14, wherein receiving the ACK/NACK comprises:
receiving the ACK/NACK based on the CCE index when the scheduling type is non-persistent scheduling; and
receiving the ACK/NACK based on the information configured by higher layers, when the scheduling type is persistent scheduling.
16. An apparatus for transmitting a physical downlink control channel in a wireless communication system, the apparatus comprising:
a controller; and
a transmitter which transmits control information on the physical downlink control channel,
wherein the control information of the physical downlink control channel comprises scheduling type information indicating a scheduling type and a resource allocation for an acknowledgement/negative acknowledgment (ACK/NACK) transmission using one of a control channel element (CCE) index and information configured by higher layers, the one of the CCE index and the information configured by higher layers being determined based on the scheduling type,
wherein the scheduling type information is used for decoding the control information of physical downlink control channel.
17. The apparatus of claim 16, wherein the scheduling type is non-persistent scheduling or persistent scheduling.
18. The apparatus of claim 16, wherein the control information comprises resource information indicating resources allocated for a data channel, a modulation and coding scheme (MCS) of the data channel, and hybrid automatic repeat request (HARQ) information.
19. The apparatus of claim 16, wherein the transmitter further transmits data on a data channel; and
further comprising a receiver configured to receive the ACK/NACK using the determined resource allocation.
20. The apparatus of claim 19, wherein the receiver is further configured to receive the ACK/NACK based on the CCE index when the scheduling type is non-persistent scheduling, and receive the ACK/NACK based on the information configured by higher layers when the scheduling type is persistent scheduling.
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