Method and apparatus for determining processing time of UE in wireless communication system
The disclosure relates to converging a 5G communication system for supporting higher data rates beyond a 4G system with a technology for IoT, and may be applied to intelligent services based on the 5G communication technology and IoT-related technology. A method is provided, which improves coverage of a PDCCH in a wireless communication system and a method of repeatedly transmitting the PDCCH. When a PDCCH is repeatedly transmitted, a method is provided for determining a PDSCH processing time and a PUSCH preparation time considered by a UE is provided, and thus, a more efficient communication system can be implemented.
1. A method performed by a terminal in a communication system, the method comprising:
receiving a physical downlink control channel (PDCCH) reception including a first PDCCH and a second PDCCH;
identifying a physical downlink shared channel (PDSCH) scheduled by the PDCCH reception;
identifying a d 1,1 value for a PDSCH processing time based on a PDCCH that results in a larger d 1,1 value among the first PDCCH and associated the second PDCCH;
identifying the PDSCH processing time based on the identified d 1,1 value; and
identifying whether to transmit, on a physical uplink control channel (PUCCH), hybrid automatic repeat request acknowledgement (HARQ-ACK) information for the PDSCH based on the PDSCH processing time.
2. The method of claim 1 , wherein identifying the PDSCH processing time is further based on a count value associated with blind decoding of the PDCCH reception, and
wherein the information on the count value is reported by the terminal.
3. The method of claim 1 , wherein the PDCCH reception corresponds to a PDCCH repetition, and
wherein a first payload of first downlink control information (DCI) in the first PDCCH is same as a second payload of second DCI in the second PDCCH.
4. The method of claim 1 , wherein,
for a processing capability 1 associated with the PDSCH processing time, d 1,1 is defined as:
in case of L≥7, d 1,1 =0,
in case of L≥4 and L≤6, d 1,1 =7−L,
in case of L=3, d 1,1 =3+min (d,1), and
in case of L=2, d 1,1 =3+d,
wherein L is a number of symbols of a scheduled PDSCH,
wherein d is a number of overlapping symbols of the scheduled PDSCH and a scheduling PDCCH of the scheduled PDSCH, and
wherein, for a processing capability 2 associated with the PDSCH processing time, d 1,1 is defined as:
in case of Z≥7, d 1,1 =0,
in case of L≥3 and L≤6, d 1,1 is the number of overlapping symbols of the scheduled PDSCH and the scheduling PDCCH, and
in case of L=2:
in case of the scheduling PDCCH corresponding to a 3-symbol control resource set (CORESET) and the CORESET and the scheduled PDSCH having a same starting symbol, d 1,1 =3,
in case of the scheduling PDCCH not corresponding to the 3-symbol CORESET, d 1,1 =the number of overlapping symbols of the scheduled PDSCH and the scheduling PDCCH, and
in case of the scheduled PDSCH having different starting symbols, d 1,1 =the number of overlapping symbols of the scheduled PDSCH and the scheduling PDCCH.
5. A method performed by a base station in a communication system, the method comprising:
transmitting a physical downlink control channel (PDCCH) transmission including a first PDCCH and a second PDCCH; and
transmitting a physical downlink shared channel (PDSCH) scheduled by the PDCCH transmission;
wherein whether to receive, on a physical uplink control channel (PUCCH), hybrid automatic repeat request acknowledgement (HARQ-ACK) information for the PDSCH is associated with a PDSCH processing time, and
wherein the PDSCH processing time is based on a PDCCH that results in a larger d 1,1 value among the first PDCCH and the second PDCCH.
6. The method of claim 5 , further comprising receiving information on a count value associated with blind decoding of the PDCCH transmission,
wherein the PDSCH processing time is further based on the count value.
7. The method of claim 5 , wherein the PDCCH transmission corresponds to a PDCCH repetition, and
wherein a first payload of first downlink control information (DCI) in the first PDCCH is same as a second payload of second DCI in the second PDCCH.
8. The method of claim 5 , wherein,
for a processing capability 1 associated with the PDSCH processing time, d 1,1 is defined as:
in case of L≥7, d 1,1 =0,
in case of L≥4 and L≤6, d 1,1 =7−L,
in case of L=3, d 1,1 =3+min (d,1), and
in case of L=2, d 1,1 =3+d,
wherein L is a number of symbols of a scheduled PDSCH,
wherein d is a number of overlapping symbols of the scheduled PDSCH and a scheduling PDCCH of the scheduled PDSCH, and
wherein, for a processing capability 2 associated with the PDSCH processing time, d 1,1 is defined as:
in case of L≥7, d 1,1 =0,
in case of L≥3 and L≤6, d 1,1 is the number of overlapping symbols of the scheduled PDSCH and the scheduling PDCCH, and
in case of L=2:
in case of the scheduling PDCCH corresponding to a 3-symbol control resource set (CORESET) and the CORESET and the scheduled PDSCH having a same starting symbol, d 1,1 =3,
in case of the scheduling PDCCH not corresponding to the 3-symbol CORESET, d 1,1 =the number of overlapping symbols of the scheduled PDSCH and the scheduling PDCCH, and
in case of the scheduled PDSCH having different starting symbols, d 1,1 =the number of overlapping symbols of the scheduled PDSCH and the scheduling PDCCH.
9. A terminal in a communication system, the terminal comprising:
a transceiver; and
a processor coupled with the transceiver and configured to:
receive a physical downlink control channel (PDCCH) reception including a first PDCCH and a second PDCCH,
identify a physical downlink shared channel (PDSCH) scheduled by the PDCCH reception,
identify a d 1,1 value for a PDSCH processing time based on a PDCCH that results in a larger d 1,1 value among the first PDCCH and the second PDCCH,
identify the PDSCH processing time based on the identified d 1,1 value, and
identify whether to transmit, on a physical uplink control channel (PUCCH), hybrid automatic repeat request acknowledgement (HARQ-ACK) information for the PDSCH based on the PDSCH processing time.
10. The terminal of claim 9 , wherein the processor is further configured to identify the PDSCH processing time further based on a count value associated with blind decoding of the PDCCH reception, and
wherein the information on the count value is reported by the terminal.
11. The terminal of claim 9 , wherein the PDCCH reception corresponds to a PDCCH repetition, and
wherein a first payload of first downlink control information (DCI) in the first PDCCH is same as a second payload of second DCI in the second PDCCH.
12. The terminal of claim 9 , wherein,
for a processing capability 1 associated with the PDSCH processing time, d 1,1 is defined as:
in case of L≥7, d 1,1 =0,
in case of L≥4 and L≤6, d 1,1 =7−L,
in case of L=3, d 1,1 =3+min (d,1), and
in case of L=2, d 1,1 =3+d,
wherein L is a number of symbols of a scheduled PDSCH,
wherein d is a number of overlapping symbols of the scheduled PDSCH and a scheduling PDCCH of the scheduled PDSCH, and
wherein, for a processing capability 2 associated with the PDSCH processing time, d 1,1 is defined as:
in case of L≥7, d 1,1 =0,
in case of L≥3 and L≤6, d 1,1 is the number of overlapping symbols of the scheduled PDSCH and the scheduling PDCCH, and
in case of L=2:
in case of the scheduling PDCCH corresponding to a 3-symbol control resource set (CORESET) and the CORESET and the scheduled PDSCH having a same starting symbol, d 1,1 =3,
in case of the scheduling PDCCH not corresponding to the 3-symbol CORESET, d 1,1 =the number of overlapping symbols of the scheduled PDSCH and the scheduling PDCCH, and
in case of the scheduled PDSCH having different starting symbols, d 1,1 =the number of overlapping symbols of the scheduled PDSCH and the scheduling PDCCH.
13. A base station in a communication system, the base station comprising:
a transceiver; and
a processor coupled with the transceiver and configured to:
transmit a physical downlink control channel (PDCCH) transmission including a first PDCCH a second PDCCH, and
transmit a physical downlink shared channel (PDSCH) scheduled by the PDCCH transmission,
wherein whether to receive, on a physical uplink control channel (PUCCH), hybrid automatic repeat request acknowledgement (HARQ-ACK) information for the PDSCH is associated with a PDSCH processing time, and
wherein the PDSCH processing time is based on a PDCCH that results in a larger d 1,1 value among the first PDCCH and the second PDCCH.
14. The base station of claim 13 , wherein the processor is configured to receive information on a count value associated with blind decoding of the PDCCH transmission, and wherein the PDSCH processing time is further based on the count value.
15. The base station of claim 13 , wherein the PDCCH transmission corresponds to a PDCCH repetition, and
wherein a first payload of first downlink control information (DCI) in the first PDCCH is same as a second payload of second DCI in the second PDCCH.
16. The base station of claim 13 , wherein,
for a processing capability 1 associated with the PDSCH processing time, d 1,1 is defined as:
in case of L≥7, d 1,1 =0,
in case of L≥4 and L≤6, d 1,1 =7−L,
in case of L=3, d 1,1 =3+min (d,1), and
in case of L=2, d 1,1 =3+d,
wherein L is a number of symbols of a scheduled PDSCH,
wherein d is a number of overlapping symbols of the scheduled PDSCH and a scheduling PDCCH of the scheduled PDSCH, and
wherein, for a processing capability 2 associated with the PDSCH processing time, d 1,1 is defined as:
in case of L≥7, d 1,1 =0,
in case of L≥3 and L≤6, d 1,1 is the number of overlapping symbols of the scheduled PDSCH and the scheduling PDCCH, and
in case of L=2:
in case of the scheduling PDCCH corresponding to a 3-symbol control resource set (CORESET) and the CORESET and the scheduled PDSCH having a same starting symbol, d 1,1 =3,
in case of the scheduling PDCCH not corresponding to the 3-symbol CORESET, d 1,1 =the number of overlapping symbols of the scheduled PDSCH and the scheduling PDCCH, and
in case of the scheduled PDSCH having different starting symbols, d 1,1 =the number of overlapping symbols of the scheduled PDSCH and the scheduling PDCCH.