Transmitter, receiver and communication method for improving uplink transmission with configured grant
Disclosed are a transmitter, a receiver and a communication method for improving uplink transmission in a communication system with configured grant, particularly in multiple transmission-reception point (multi-TRP)/panel scenario. The transmitter includes a circuitry configured to: receive a configured grant (CG) configuration used to configure a type of CG for a PUSCH transmission; and transmit the PUSCH transmission with the CG, wherein the CG PUSCH transmission is associated with one of the multi-TRPs for an active uplink Bandwidth Part (BWP) of a serving cell. The support for CG PUSCH transmission in multi-TRP/panel scenario is greatly enhanced.
1. A transmitter, configured to communicate in a communication system, the transmitter comprising:
one or more interfaces configured to communicate with transmission-reception points (TRPs) within the communication system; and
a circuitry configured to:
receive a configured grant (CG) configuration used to configure a type of CG for a Physical Uplink Shared Channel (PUSCH) transmission;
transmit the PUSCH transmission with the CG, wherein the CG PUSCH transmission is implicitly or explicitly associated with one of the TRPs; and
receive scheduling information about the CG PUSCH transmission and another CG PUSCH transmission scheduled across the TRPs and associated with different TRP identifications, wherein the scheduling information indicates that activation of the CG PUSCH transmission ends later than an end of activation of the another CG PUSCH transmission, and the CG PUSCH transmission is allowed to start earlier than an end of the another CG PUSCH transmission.
2. The transmitter according to claim 1 , wherein the CG configuration is received via Radio Resource Control (RRC).
3. The transmitter according to claim 1 , wherein the circuitry is configured to:
in response to the CG configuration indicative of a CG type 1 PUSCH transmission, associate the CG type 1 PUSCH transmission with a TRP indicated by a TRP related parameter.
4. The transmitter according to claim 3 , wherein the CG configuration comprises the TRP related parameter.
5. The transmitter according to claim 1 , wherein the circuitry is configured to:
in response to the CG configuration indicative of a CG type 1 PUSCH transmission, associate the CG type 1 PUSCH transmission with a pre-defined TRP.
6. The transmitter according to claim 1 , wherein the circuitry is configured to:
in response to the CG configuration indicative of a CG type 2 PUSCH transmission, associate the CG type 2 PUSCH transmission with a TRP indicated by a TRP related parameter.
7. The transmitter according to claim 1 , wherein the circuitry is configured to:
associate a CG type 2 PUSCH transmission indicated by Downlink Control Information (DCI) that is configured in a COntrol REsource SET (CORESET) of a control region, with a TRP associated with the CORESET.
8. The transmitter according to claim 1 , wherein the circuitry is configured to:
receive scheduling information about a dynamic grant (DG) PUSCH transmission and the CG PUSCH transmission scheduled across the TRPs, wherein the scheduling information indicates that activation of the CG PUSCH transmission ends later than an end of a Physical Downlink Control Channel (PDCCH) scheduling the DG PUSCH transmission, and the CG PUSCH transmission associated with a first TRP identification is allowed to start earlier than an end of the DG PUSCH transmission associated with a second TRP identification different from the first TRP identification.
9. The transmitter according to claim 8 , wherein the CG PUSCH transmission is one of a CG type 1 PUSCH transmission and a CG type 2 PUSCH transmission.
10. The transmitter according to claim 8 , wherein the DG PUSCH transmission is scheduled by the PDCCH associated with the first TRP identification and the CG PUSCH transmission is a CG type 2 PUSCH transmission scheduled by another PDCCH associated with the second TRP identification.
11. The transmitter according to claim 1 , wherein the circuitry is configured to:
receive scheduling information about a CG type 1 PUSCH transmission and a CG type 2 PUSCH transmission scheduled across the TRPs, wherein the scheduling information indicates that activation of the CG type 1 PUSCH transmission ends later than an end of activation of the CG type 2 PUSCH transmission, and the CG type 1 PUSCH transmission associated with a first TRP identification is allowed to start earlier than an end of the CG type 2 PUSCH transmission associated with a second TRP identification different from the first TRP identification.
12. The transmitter according to claim 1 , wherein the CG PUSCH transmission and the another CG PUSCH transmission are two PUSCH transmissions of one of CG type 1 and CG type 2.
13. The transmitter according to claim 1 , wherein the CG PUSCH transmission and the another CG PUSCH transmission are CG type 2 PUSCH transmissions scheduled by two PDCCHs associated with two different TRP identifications, respectively.
14. The transmitter according to claim 1 , wherein the circuitry is configured to:
in response to the CG PUSCH transmission overlapping with two DG PUSCH transmissions, transmit no DG PUSCH transmission scheduled by a PDCCH that ends less than a predetermined number of symbols before the beginning of the CG PUSCH transmission and is associated with a same TRP identification as the CG PUSCH transmission.
15. The transmitter according to claim 1 , wherein the circuitry is configured to:
in response to the CG PUSCH transmission overlapping with two DG PUSCH transmissions, transmit the PUSCH transmissions based on the following rules:
if a shorter duration of a first duration and a second duration is less than a predetermined number of symbols, transmit no DG PUSCH transmission scheduled by a PDCCH with the shorter duration; and
if both the first duration and the second duration are more than the predetermined number of symbols, transmit no CG PUSCH transmission,
wherein the first duration is from an end of the PDCCH scheduling one of the two DG PUSCH transmissions to the beginning of the CG PUSCH transmission and the second duration is from an end of the PDCCH scheduling the other one of the two DG PUSCH transmissions to the beginning of the CG PUSCH transmission.
16. The transmitter according to claim 1 , wherein the circuitry is configured to:
in response to a DG PUSCH transmission overlapping with two CG PUSCH transmissions, transmit no DG PUSCH transmission scheduled by a PDCCH that ends less than a predetermined number of symbols before the beginning of the CG PUSCH transmission that is associated with a same TRP identification as the DG PUSCH transmission.
17. The transmitter according to claim 1 , wherein the circuitry is configured to:
in response to a DG PUSCH transmission overlapping with two CG PUSCH transmissions, transmit the PUSCH transmissions based on the following rules:
if both a first duration and a second duration are less than a predetermined number of symbols, transmit no DG PUSCH transmission; and
if one of the first duration and the second duration is more than the predetermined number of symbols, transmit no CG PUSCH transmission with a longer duration,
wherein the first duration is from an end of a PDCCH scheduling the DG PUSCH transmission to the beginning of one of the two CG PUSCH transmissions and the second duration is from the end of the PDCCH scheduling the DG PUSCH transmission to the beginning of the other one of the two CG PUSCH transmissions.