Method and device for receiving downlink control information DCI
The present disclosure provides a method performed by a user equipment (UE), the method including determining formats of all downlink control information (DCI) to be received and DCI format payload sizes corresponding to the formats of the DCI; performing an alignment operation on one or more of the DCI format payload sizes according to a protocol or higher-layer signaling; and receiving all DCI, wherein, the formats of all DCI to be received include a DCI format for a multicast physical downlink shared channel (PDSCH).
1. A method performed by a user equipment (UE), the method comprising:
determining formats of all downlink control information (DCI) to be received and DCI format payload sizes corresponding to the formats of all DCI;
performing alignment operations on the DCI format payload sizes according to an execution order; and
receiving the all DCI,
wherein, the formats of all DCI to be received include a DCI format for a multicast physical downlink shared channel (PDSCH).
2. The method of claim 1 , wherein determining the formats of all DCI to be received and the DCI format payload sizes corresponding to the formats of all DCI comprises:
determining the DCI format payload sizes according to the higher-layer signaling.
3. The method of claim 1 , wherein performing the alignment operations on the DCI format payload sizes comprises:
determining at least one of a plurality of DCI format payload size alignment operations and the execution order of the plurality of DCI format payload size alignment operations.
4. The method of claim 1 , wherein performing the alignment operations on the DCI format payload sizes comprises:
making a payload size of the DCI format for the multicast PDSCH equal to a payload size of a DCI format 1-0 in a common search space (CSS).
5. The method of claim 1 , wherein performing the alignment operations on the DCI format payload sizes comprises:
making a payload size of a DCI format of a UE-specific search space (USS) equal to a payload size of the DCI format for the multicast PDSCH by increasing or decreasing a number of bits of the DCI format of the USS,
wherein, the DCI format of the USS includes at least one of a DCI format 1-0, a DCI format 1-2, a DCI format 1-1, a DCI format 0-2 and a DCI format 0-1.
6. The method of claim 5 , wherein performing the alignment operations on the DCI format payload sizes further comprises:
after a payload size of a DCI format 0-x is aligned with a payload size of a DCI format 1-x, making the payload size of the DCI format 1-x of the USS equal to the payload size of the DCI format for the multicast PDSCH by increasing or decreasing a number of bits of the payload size of the DCI format 0-x and DCI format 1-x in the USS,
wherein, x is 1 or 2.
7. A user equipment (UE), comprising:
a transceiver; and
a processor configured to:
determine formats of all downlink control information (DCI) to be received and DCI format payload sizes corresponding to the formats of all DCI;
perform alignment operations on the DCI format payload sizes according to an execution order; and
receive the all DCI,
wherein, the formats of all DCI to be received include a DCI format for a multicast physical downlink shared channel (PDSCH).
8. The UE of claim 7 , wherein, for determining the formats of all DCI to be received and the DCI format payload sizes corresponding to the formats of all DCI, the processor is configured to:
determine the DCI format payload sizes according to higher-layer signaling.
9. The UE of claim 7 , wherein, for performing the alignment operations on the DCI format payload sizes, the processor is configured to:
determine at least one of a plurality of DCI format payload size alignment operations and the execution order of the plurality of DCI format payload size alignment operations.
10. The UE of claim 7 , wherein the processor is configured to:
make a payload size of the DCI format for the multicast PDSCH equal to a payload size of a DCI format 1-0 in a common search space (CSS).
11. The UE of claim 7 , wherein the processor is configured to:
make a payload size of a DCI format of a UE-specific search space (USS) equal to a payload size of the DCI format for the multicast PDSCH by increasing or decreasing a number of bits of the DCI format of the USS,
wherein, the DCI format of the USS includes at least one of a DCI format 1-0, a DCI format 1-2, a DCI format 1-1, a DCI format 0-2 and a DCI format 0-1.
12. The UE of claim 11 , wherein the processor is configured to:
after a payload size of a DCI format 0-x is aligned with a payload size of a DCI format 1-x, make the payload size of the DCI format 1-x of the USS equal to the payload size of the DCI format for the multicast PDSCH by increasing or decreasing a number of bits of the payload size of the DCI format 1-x in the USS,
wherein, x is 1 or 2.
13. A method performed by a base station, the method comprising:
selectively transmitting a higher-layer signaling configuration to a user equipment (UE), wherein the higher-layer signaling configuration indicates formats of all downlink control information (DCI) to be transmitted and DCI format payload sizes corresponding to the formats of all DCI;
performing alignment operations on the DCI format payload sizes according to an execution order; and
transmitting the all DCI,
wherein, the formats of all the DCI to be transmitted include a DCI format for a multicast physical downlink shared channel (PDSCH).
14. The method of claim 13 , wherein performing the alignment operations on the DCI format payload sizes comprises:
determining at least one of a plurality of DCI format payload size alignment operations and the execution order of the plurality of DCI format payload size alignment operations.
15. The method of claim 13 , wherein performing the alignment operations on the DCI format payload sizes comprises:
making a payload size of the DCI format for the multicast PDSCH equal to a payload size of a DCI format 1-0 in a common search space (CSS).
16. The method of claim 13 , wherein performing the alignment operations on the DCI format payload sizes comprises:
making a payload size of a DCI format of a UE-specific search space (USS) equal to a payload size of the DCI format for the multicast PDSCH by increasing or decreasing a number of bits of the DCI format of the USS,
wherein, the DCI format of the USS includes at least one of a DCI format 1-0, a DCI format 1-2, a DCI format 1-1, a DCI format 0-2 and a DCI format 0-1.
17. A base station, comprising:
a transceiver; and
a processor configured to:
selectively transmit a higher-layer signaling configuration to a user equipment (UE), wherein the higher-layer signaling configuration indicates formats of all downlink control information (DCI) to be transmitted and DCI format payload sizes corresponding to the formats of all DCI;
perform alignment operations on the DCI format payload sizes according to an execution order; and
transmit the all DCI,
wherein, the formats of all the DCI to be transmitted include a DCI format for a multicast physical downlink shared channel (PDSCH).
18. The base station of claim 17 , wherein for performing the alignment operations on the DCI format payload sizes, the processor is configured to:
determine at least one of a plurality of DCI format payload size alignment operations and the execution order of the plurality of DCI format payload size alignment operations.
19. The base station of claim 17 , wherein the processor is further configured to:
make a payload size of the DCI format for the multicast PDSCH equal to a payload size of a DCI format 1-0 in a common search space (CSS).
20. The base station of claim 17 , wherein the processor is further configured to:
make a payload size of a DCI format of a UE-specific search space (USS) equal to a payload size of the DCI format for the multicast PDSCH by increasing or decreasing a number of bits of the DCI format of the USS,
wherein, the DCI format of the USS includes at least one of a DCI format 1-0, a DCI format 1-2, a DCI format 1-1, a DCI format 0-2 and a DCI format 0-1.