Physical uplink shared channel enhancements for new radio ultra-reliable low-latency communication
A network device (e.g., a user equipment (UE), a new radio NB (gNB), or other network component) can process or generate a dynamic Physical Uplink Shared Channel (PUSCH) repetition indication that provides parameters about PUSCH repetition(s) for the uplink within one, two or other number of slots of a New Radio (NR) communication as an Ultra-Reliable Low-Latency Communication. The network device can also process or generate one or more multiple Configuration-Grant (CG) PUSCH configurations. The presence of a repetition level bit-field in a Downlink Control Information (DCI) carrying UL grant or activating UL configured grant PUSCH can be controlled by semi-static UE-specific RRC signaling enabling or disabling the dynamic signaling of PUSCH repetitions.
1 . A baseband processor configured to, when executing instructions stored in a memory, perform operations comprising:
receiving one or more Type 2 configured grant (CG) Physical Uplink Shared Channel (PUSCH) configurations;
receiving User Equipment (UE) specific Radio Resource Control (RRC) signaling to configure a time-domain resource allocation table, wherein an entry of the time-domain resource allocation table is jointly configured with a number of repeated PUSCH transmissions in addition to a starting symbol, a length of PUSCH, and a PUSCH mapping type;
receiving a downlink control information (DCI) transmission to activate the one or more Type 2 CG PUSCH configurations, wherein the DCI includes a field pointing to the entry of the time-domain resource allocation table; and
generating, for transmission via radio frequency (RF) circuitry and in response to the DCI, the number of repeated PUSCH transmissions within a number of slots based on the one or more Type 2 CG PUSCH configurations and the entry of the time-domain resource allocation table.
2 . The baseband processor of claim 1 , wherein the operations further comprise receiving RRC signaling to enable dynamic signaling of PUSCH repetitions.
3 . The baseband processor of claim 1 , wherein the operations further comprise reinterpreting a 2-bit Redundancy Version (RV) indicator field in the DCI to determine the number of repeated PUSCH transmissions in response to being configured by higher layer signaling, wherein the DCI comprises a DCI format 0_0 or 0_1.
4 . The baseband processor of claim 1 , wherein the DCI includes a time-domain resource assignment field pointing to the entry of the time-domain resource allocation table.
5 . The baseband processor of claim 1 , wherein the operations further comprise receiving RRC signaling indicating whether to generate the number of repeated PUSCH transmissions as a Type A PUSCH repetition or a Type B PUSCH repetition.
6 . The baseband processor of claim 5 , wherein:
the Type A PUSCH repetition comprises slot-based repetitions having a same time domain allocation in repeated slots, wherein the time domain allocation includes a starting symbol, duration, and mapping type of the PUSCH and is derived from a time domain resource allocation field of the DCI; and
the Type B PUSCH repetition comprises back-to-back repetitions, wherein a starting symbol of the back-to-back repetitions other than an initial repetition is derived based on an ending symbol of a previous repetition, and wherein the back-to-back repetitions are contiguous within one or more slots.
7 . The baseband processor of claim 1 , wherein the one or more Type 2 CG PUSCH configurations convey resource allocation and transmission parameters for the number of repeated PUSCH transmissions as an ultra-reliable low latency communication (URLLC).
8 . The baseband processor of claim 1 , wherein the operations further comprise: receiving a deactivation indication in DCI, and in response to receiving the deactivation indication in the DCI, releasing a corresponding CG PUSCH configuration in a bandwidth part (BWP).
9 . The baseband processor of claim 1 , wherein the operations further comprise receiving L1 signaling or medium access control (MAC) control element (MAC CE) signaling to switch from a first Type 2 CG PUSCH configuration of the one or more Type 2 CG PUSCH configurations to a second Type 2 CG PUSCH configuration of the one or more Type 2 CG PUSCH configurations, wherein the L1 signaling includes UE specific DCI or a group-DCI where the UE is mapped to a field of the group-DCI containing UE-specific information.
10 . The baseband processor of claim 1 , wherein a total number of bits in the field of the DCI is based on a total number of entries in the time-domain resource allocation table.
11 . A non-transitory computer readable storage device storing executable instructions that, in response to execution, cause one or more processors of User Equipment (UE) to perform operations comprising:
receiving one or more Type 2 configured grant (CG) Physical Uplink Shared Channel (PUSCH) configurations;
receiving UE specific Radio Resource Control (RRC) signaling to configure a time-domain resource allocation table, wherein an entry of the time-domain resource allocation table is jointly configured with a number of repeated PUSCH transmissions in addition to a starting symbol, a length of PUSCH, and a PUSCH mapping type;
receiving a downlink control information (DCI) transmission to activate the one or more Type 2 CG PUSCH configurations, wherein the DCI includes a field pointing to the entry of the time-domain resource allocation table; and
generating, for transmission via radio frequency (RF) circuitry and in response to the DCI, the number of repeated PUSCH transmissions within a number of slots based on the one or more Type 2 CG PUSCH configurations and the entry of the time-domain resource allocation table.
12 . The non-transitory computer readable storage device of claim 11 , wherein the one or more Type 2 CG PUSCH configurations convey resource allocation and transmission parameters for the number of repeated PUSCH transmissions as an ultra-reliable low latency communication (URLLC).
13 . The non-transitory computer readable storage device of claim 11 , wherein the operations further comprise receiving one or more DCIs to activate the one or more Type 2 CG PUSCH configurations respectively.
14 . The non-transitory computer readable storage device of claim 11 , wherein the operations further comprise:
configuring a bitmap size number of the one or more Type 2 CG PUSCH configurations to be confirmed simultaneously or a number of configurations of the Type 2 CG PUSCH configured to the UE, wherein a configured grant confirmation medium access control (MAC) control element (MAC CE) format is addressed by Logical Channel ID (LCID) having a non-zero size and carries an indication of which configuration of the one or more Type 2 CG PUSCH configurations is confirmed.
15 . The non-transitory computer readable storage device of claim 14 , wherein a MAC CE signaling carries one or more indexes of one or more CG PUSCH configuration, and wherein each configuration of the one or more Type 2 CG PUSCH configurations includes a Configuration Index defined within each CG PUSCH type or across all CG PUSCH configurations provided to the UE.
16 . The non-transitory computer readable storage device of claim 11 , wherein a total number of bits in the field of the DCI is based on a total number of entries in the time-domain resource allocation table.
17 . The non-transitory computer readable storage device of claim 11 , wherein the DCI includes a time-domain resource assignment field pointing to the entry of the time-domain resource allocation table.
18 . A baseband processor configured to, when executing instructions stored in a memory, perform operations comprising:
generating, for transmission via radio frequency (RF) circuitry, one or more Type 2 configured grant (CG) Physical Uplink Shared Channel (PUSCH) configurations;
generating, for transmission via the RF circuitry, User Equipment (UE) specific Radio Resource Control (RRC) signaling to configure a time-domain resource allocation table, wherein an entry of the time-domain resource allocation table is jointly configured with a number of repeated PUSCH transmissions in addition to a starting symbol, a length of PUSCH, and a PUSCH mapping type;
generating a downlink control information (DCI) for transmission via the RF circuitry, wherein the DCI includes an indication to activate the one or more Type 2 CG PUSCH configurations and a field pointing to the entry of the time-domain resource allocation table; and
receiving a number of repeated PUSCH transmissions within a number of slots based on the one or more Type 2 CG PUSCH configurations and the entry of the time-domain resource allocation table.
19 . The baseband processor of claim 18 , wherein a total number of bits in the field of the DCI is based on a total number of entries in the time-domain resource allocation table.
20 . The baseband processor of claim 18 , wherein the DCI includes a time-domain resource assignment field pointing to the entry of the time-domain resource allocation table.