Enhancement of performance of ultra-reliable low-latency communication
The disclosure describes mechanisms for reliability enhancement on control channel and data channel and mechanisms in URLLC. An apparatus of a RAN node for URLLC includes baseband circuitry to configure at least one DCI for scheduling transmission of at least one PDSCH content having same information. For each DCI, the baseband circuitry determines a CORESET for transmitting the DCI. The disclosure further describes mechanisms for the support of low latency transmission in URLLC. To improve peak data rate and spectrum efficiency in FDD system, the RAN node configures a DCI for scheduling data transmission using blank resources of a self-contained slot structure. Further, CBG-based transmission with separate HARQ-ACK feedback is provided to configure a DCI for scheduling data transmission of a TB and to divide the TB into multiple CBGs, and to configure uplink control data to carry separate HARQ feedback for the CBGs.
1 . A method, comprising:
receiving configuration information for multiple control resource sets (CORESETs) in a bandwidth part (BWP), the multiple CORESETS including a first CORESET and a second CORESET;
receiving a first DCI in the first CORESET, the first DCI scheduling a first physical downlink shared channel (PDSCH) transmission;
receiving a second DCI in the second CORESET, the second DCI scheduling the first PDSCH transmission; and
receiving the first PDSCH transmission within the BWP according to the first DCI and the second DCI, wherein the first DCI and the second DCI have the same DCI content for scheduling the first PDSCH transmission within one BWP.
2 . The method of claim 1 , wherein the first DCI is transmitted using a first beam and the second DCI is transmitted using a second beam.
3 . The method of claim 1 , wherein the first DCI is received in a first search space according to a first physical downlink control channel (PDCCH) candidate, wherein the second DCI is received in a second search space according to a second PDCCH candidate.
4 . The method of claim 3 , wherein an association between the first search space and the second search space is configured by radio resource control (RRC) signaling.
5 . The method of claim 3 , wherein the first PDCCH candidate and the second PDCCH candidate have the same aggregation level.
6 . The method of claim 1 , further comprising:
performing soft combing on the first DCI and the second DCI.
7 . The method of claim 1 , wherein the first DCI employs cross carrier scheduling.
8 . A baseband processor configured to perform operations, the operations comprising:
receiving configuration information for multiple control resource sets (CORESETs) in a bandwidth part (BWP), the multiple CORESETS including a first CORESET and a second CORESET;
receiving a first DCI in the first CORESET, the first DCI scheduling a first physical downlink shared channel (PDSCH) transmission;
receiving a second DCI in the second CORESET, the second DCI scheduling the first PDSCH transmission; and
receiving the first PDSCH transmission within the BWP according to the first DCI and the second DCI, wherein the first DCI and the second DCI have the same DCI content for scheduling the first PDSCH transmission within one BWP.
9 . The baseband processor of claim 8 , wherein the first DCI is transmitted using a first beam and the second DCI is transmitted using a second beam.
10 . The baseband processor of claim 8 , wherein the first DCI is received in a first search space according to a first physical downlink control channel (PDCCH) candidate, wherein the second DCI is received in a second search space according to a second PDCCH candidate.
11 . The baseband processor of claim 10 , wherein an association between the first search space and the second search space is configured by radio resource control (RRC) signaling.
12 . The baseband processor of claim 10 , wherein the first PDCCH candidate and the second PDCCH candidate have the same aggregation level.
13 . The baseband processor of claim 8 , the operations further comprising:
performing soft combing on the first DCI and the second DCI.
14 . The baseband processor of claim 8 , wherein the first DCI employs cross carrier scheduling.
15 . A method, comprising:
transmitting configuration information for multiple control resource sets (CORESETs) in a bandwidth part (BWP), the multiple CORESETS including a first CORESET and a second CORESET;
transmitting a first DCI in the first CORESET, the first DCI scheduling a first physical downlink shared channel (PDSCH) transmission;
transmitting a second DCI in the second CORESET, the second DCI scheduling the first PDSCH transmission; and
transmitting the first PDSCH transmission within the BWP according to the first DCI and the second DCI, wherein the first DCI and the second DCI have the same DCI content for scheduling the first PDSCH transmission within one BWP.
16 . The method of claim 15 , wherein the first DCI is transmitted using a first beam and the second DCI is transmitted using a second beam.
17 . The method of claim 15 , wherein the first DCI is transmitted in a first search space according to a first physical downlink control channel (PDCCH) candidate, wherein the second DCI is transmitted in a second search space according to a second PDCCH candidate.
18 . The method of claim 17 , wherein an association between the first search space and the second search space is configured by radio resource control (RRC) signaling.