Uplink control information (UCI) transmission and hybrid automatic repeat request (HARQ) process identification for grant-free physical uplink shared channel (PUSCH)
An apparatus of a New Radio (NR) User Equipment (UE), a method and system. The apparatus includes baseband circuitry including a radio frequency (RF) interface and one or more processors coupled to the RF interface and configured to execute the instructions to: encode a plurality of Transport Blocks (TBs) and encode a first uplink transmission using the TBs and in a grant-free mode to a NR evolved Node B (gNodeB); decode a downlink control information (DCI) from the gNodeB; based on the DCI, encode a second uplink transmission using the TBs to the gNodeB, wherein the second uplink transmission is one of in a grant-free mode and in a grant-based mode, and wherein the DCI includes information on an identification (ID) for a hybrid automatic repeat request-acknowledge feedback (HARQ) process (HARQ process ID) corresponding to the second uplink transmission, the HARQ process ID being based on a resource configuration index corresponding to the second uplink transmission; and send the TBs, the first encoded uplink transmission, and the second encoded uplink transmission to the RF interface.
1. An apparatus of a New Radio (NR) User Equipment (UE), the apparatus comprising baseband circuitry including:
a radio frequency (RF) circuitry interface; and
one or more processors configured to:
receive one or more resource configurations for grant-free transmissions, wherein each resource configuration is identified by an associated index and each configured grant-free transmission includes a plurality of retransmission opportunities;
transmit an uplink transmission according to a first of the one or more resource configurations;
receive Hybrid Automatic Repeat Request (HARQ) information from a NR evolved Node B (gNodeB) in a downlink channel;
determine a HARQ process identification (ID) for the HARQ information as a function of the index of the first resource configuration and a value of a harqProcessOffset parameter for the first resource configuration, wherein the harqProcessOffset parameter is configured by the gNB on a per resource configuration basis; and
based on the HARQ information, transmit a subsequent uplink transmission of the uplink transmission identified by the HARQ process ID to the gNodeB.
2. The apparatus of claim 1 , wherein the HARQ process ID comprises a plurality of HARQ process IDs, the HARQ process comprises a plurality of HARQ processes corresponding to respective ones of the HARQ process IDs.
3. The apparatus of claim 2 , wherein the HARQ process ID is based on a value equal to [floor(CURRENT_TTI/semiPersistSchedlntervalUL)] modulo numberOfConfUISPS-Processes+harqProcessOffset, wherein “CURRENT_TTI” corresponds to a current Transition Time Interval (TTI), “semi PersistSchedlntervalUL” corresponds to a scheduling time interval of semi-persistent scheduling (SPS) for the uplink transmission (UL), “numberOfConfUISPS Processes” corresponds to a number of the plurality of HARQ processes.
4. The apparatus of claim 1 , wherein the HARQ process ID is based on a System Frame Number (SFN) for the uplink transmission.
5. The apparatus of claim 1 , further including a front-end module (FEM) coupled to the RF interface.
6. The apparatus of claim 5 , further including at least one antenna coupled to the FEM.
7. Non-transitory computer-readable storage media comprising computer-executable instructions operable to, when executed by one or more processors of a New Radio (NR) User Equipment (UE), enable the one or more processors to implement operations at the UE, the operations including:
receiving one or more resource configurations for grant-free transmissions, wherein each resource configuration is identified by an associated index and each configured grant-free transmission includes a plurality of retransmission opportunities;
transmitting an uplink transmission according to a first of the one or more resource configurations;
receiving Hybrid Automatic Repeat Request (HARQ) information from a NR evolved Node B (gNodeB) in a downlink channel;
determining a HARQ process identification (ID) for the HARQ information as a function of the index of the first resource configuration and a value of a harqProcessOffset parameter for the first resource configuration, wherein the harqProcessOffset parameter is configured by the gNB on a per resource configuration basis; and
based on the HARQ information, transmitting a subsequent uplink transmission of the uplink transmission identified by the HARQ process ID to the gNodeB.
8. The non-transitory computer-readable storage media of claim 7 , wherein the HARQ process ID comprises a plurality of HARQ process IDs, the HARQ process comprises a plurality of HARQ processes corresponding to respective ones of the HARQ process IDs.
9. The non-transitory computer-readable storage media of claim 8 , wherein the HARQ process ID is based on a value equal to [floor(CURRENT_TTI/semiPersistSchedIntervalUL)] modulo numberOfConfUISPS-Processes+harqProcessOffset, wherein “CURRENT_TTI” corresponds to a Transition Time Interval (TTI), “semi PersistSchedlntervalUL” corresponds to a scheduling time interval of semi-persistent scheduling (SPS) for the uplink transmission (UL), “numberOfConfUISPS-Processes” corresponds to a number of the plurality of HARQ processes.
10. The non-transitory computer-readable storage media of claim 7 , wherein the HARQ process ID is based on a System Frame Number (SFN) for the uplink transmission.
11. A method comprising,
with a New Radio (NR) User Equipment (UE):
receive one or more resource configurations for grant-free transmissions, wherein each resource configuration is identified by an associated index and each configured grant-free transmission includes a plurality of retransmission opportunities;
transmit an uplink transmission according to a first of the one or more resource configurations;
receiving Hybrid Automatic Repeat Request (HARQ) information from a NR evolved Node B (gNodeB) in a downlink channel;
determining a HARQ process identification (ID) for the HARQ information as a function of the index of the first resource configuration and a value of a harqProcessOffset parameter for the first resource configuration, wherein the harqProcessOffset parameter is configured by the gNB on a per resource configuration basis; and
based on the HARQ information, transmitting a subsequent uplink transmission of the uplink transmission identified by the HARQ process ID to the gNodeB.
12. The method of claim 11 , wherein the HARQ process ID comprises a plurality of HARQ process IDs, the HARQ process comprises a plurality of HARQ processes corresponding to respective ones of the HARQ process IDs.
13. The method of claim 12 , wherein the HARQ process ID is based on a value equal to [floor(CURRENT_TTI/semiPersistSchedIntervalUL)] modulo numberOfConfUISPS Processes+harqProcessOffset, wherein “CURRENT_TTI” corresponds to a Transition Time Interval (TTI), “semiPersistSchedlntervalUL” corresponds to a scheduling time interval of semi persistent scheduling (SPS) for the uplink transmission (UL), “numberOfConfUISPS-Processes” corresponds to a number of the plurality of HARQ processes.
14. The method of claim 12 , wherein the HARQ process ID is based on a System Frame Number (SFN) for the uplink transmission.