Methods for transmitting and receiving of control channel in wireless communication systems
A method of transmitting and receiving a control channel in a wireless communication system is provided. A base station allocates a data channel to a radio resource, adds start position information of the data channel into a payload of a control channel, and performs signaling for indication information on the start position information added into the payload of the control channel to a terminal. Accordingly, the legacy system and the enhanced system can efficiently transmit a control channel.
1. A communication method for a user equipment (UE), the communication method comprising:
receiving, by the UE, a first message from an eNode-B;
receiving, by the UE, control information from the eNode-B, wherein the control information is received through a physical downlink control channel (PDCCH) of a subframe;
determining, by the UE, whether the subframe is allocated for Multicast-Broadcast Single Frequency Network (MBSFN) at least based on the control information; and
receiving, by the UE, data in the subframe from the eNode-B,
wherein the first message comprises a plurality of parameter sets, and the control information comprises an indicator indicating one of the plurality of parameter sets, and
wherein each of the plurality of parameter sets indicates a starting symbol of a downlink shared channel in a subframe on which data is transmitted and an MBSFN subframe configuration.
2. A communication method for an eNode-B, comprising:
transmitting, by the eNode-B, a first message;
generating, by the eNode-B, control information;
transmitting, by the eNode-B, the control information through a physical downlink control channel (PDCCH) of a subframe; and
transmitting data in the subframe,
wherein the control information allows a user equipment (UE) to determine whether the subframe is allocated for Multicast-Broadcast Single Frequency Network (MBSFN),
wherein the first message comprises a plurality of parameter sets, and the control information comprises an indicator indicating one of the plurality of parameter sets, and
wherein each of the plurality of parameter sets indicates a starting symbol of a downlink shared channel in a subframe on which data is transmitted and an MBSFN subframe configuration.
3. The method of claim 2 , wherein both the control information and the data are transmitted in the subframe.
4. The method of claim 1 , wherein the control information is transmitted from a first cell and the data is transmitted from a second cell.
5. The method of claim 2 , wherein the indicator comprises a predetermined number of bits.
6. The method of claim 1 , wherein both the control information and the data are received in the subframe.
7. The method of claim 1 , wherein the control information is received from a first cell and the data is received from a second cell.
8. The method of claim 1 , further comprising:
determining, by the UE, a radio resource location of a reference signal in the subframe at least based on the control information.
9. A communication apparatus, comprising:
a memory; and
a processor operably coupled to the memory,
wherein the processor, when executing program instructions stored in the memory, is configured to:
cause the apparatus to receive a first message from an eNode-B;
cause the apparatus to receive control information from the eNode-B, the control information being received through a physical downlink control channel (PDCCH) of a subframe; determine whether the subframe is allocated for Multicast-Broadcast Single Frequency Network (MBSFN) at least based on the control information; and
cause the apparatus to receive data in the subframe from the eNode-B,
wherein the first message comprises a plurality of parameter sets, and the control information comprises an indicator indicating one of the plurality of parameter sets, and
wherein each of the plurality of parameter sets indicates a starting symbol of a downlink shared channel in a subframe on which data is transmitted and an MBSFN subframe configuration.
10. The apparatus of claim 9 , wherein both the control information and the data are transmitted in the subframe.
11. The apparatus of claim 9 , wherein the control information is received from a first cell and the data is received from a second cell.
12. The apparatus of claim 9 , wherein the processor is further configured to:
determine a radio resource location of a reference signal in the subframe at least based on the control information.
13. An apparatus for an eNode-B, the apparatus comprising:
a memory; and
a processor operably coupled to the memory,
wherein the processor, when executing program instructions stored in the memory; is configured to:
cause the eNode-B to transmit a first message;
generate control information;
cause the eNode-B to transmit the control information through a physical downlink control channel (PDCCH) of a subframe; and
cause the eNode-B to transmit data in the subframe,
wherein the control information allows a user equipment (UE) to determine whether the subframe is allocated for Multicast-Broadcast Single Frequency Network (MBSFN),
wherein the first message comprises a plurality of parameter sets, and the control information comprises an indicator indicating one of the plurality of parameter sets, and
wherein each of the plurality of parameter sets indicates a starting symbol of a downlink shared channel in a subframe on which data is transmitted and an MBSFN subframe configuration.
14. The apparatus of claim 13 , wherein both the control information and the data are transmitted in the subframe.
15. The apparatus of claim 13 , wherein the control information is transmitted from a first cell and the data is transmitted from a second cell.
16. The apparatus of claim 13 , wherein the indicator comprises a predetermined number of bits.
17. An apparatus for a user equipment (UE), the apparatus comprising:
a memory; and
a processor operably coupled to the memory,
wherein the processor, when executing program instructions stored in the memory, is configured to:
cause the UE to receive a first message from an eNode-B;
cause the UE to receive control information from the eNode-B, the control information being received through a physical downlink control channel (PDCCH) of a subframe;
determine whether the subframe is allocated for Multicast-Broadcast Single Frequency Network (MBSFN) at least based on the control information; and
cause the UE to receive data in the subframe from the eNode-B,
wherein the first message comprises a plurality of parameter sets, and the control information comprises an indicator indicating one of the plurality of parameter sets, and
wherein each of the plurality of parameter sets indicates a starting symbol of a downlink shared channel in a subframe on which data is transmitted and an MBSFN subframe configuration.
18. The apparatus of claim 17 , wherein both the control information and the data are transmitted in the subframe.
19. The apparatus of claim 17 , wherein the control information is received from a first cell and the data is received from a second cell.
20. The apparatus of claim 17 , wherein the processor is further configured to:
determine a radio resource location of a reference signal in the subframe at least based on the control information.