System and methods for dynamic scheduling in new radio with user equipment
Dynamic scheduling can be performed by 5G new radio in the licensed or unlicensed band. A UE can be polled by receiving a DCI that indicates dynamically updated resources. UE can be configured to find the DCI and use the resources to send a scheduling request (SR). Other aspects are described.
1. A method performed by user equipment (UE) in a 5G new radio (NR) in a licensed or an unlicensed spectrum environment, comprising:
receiving configuration information from a base station, wherein the configuration information comprises information for finding downlink control information (DCI);
being polled by receiving the DCI that includes indication of a physical uplink control channel (PUCCH) resource for the UE to transmit a dynamic scheduling request (SR);
finding the DCI based on the configuration information;
finding the PUCCH resource based on a symbol location that is determined relative to a position of a PUCCH resource indicator (PRI) in the DCI; and
transmitting the dynamic SR in a PUCCH message based on the PUCCH resource, wherein uplink grant is performed based on the dynamic SR, wherein transmitting the dynamic SR includes transmitting a listen before talk (LBT) band for the network to identify a resource for the uplink grant.
2. The method of claim 1 , wherein the DCI is received over a channel during a specified channel occupancy time (COT).
3. The method of claim 1 , wherein the DCI includes THE PUCCH resource indicator (PRI) having a bit field that indicates the PUCCH resource to be used for the dynamic SR.
4. A baseband processor of a user equipment (UE) that is configured to perform operations comprising:
receiving configuration information from a base station, wherein the configuration information comprises information for finding downlink control information (DCI);
being polled by receiving the DCI that includes indication of a physical uplink control channel (PUCCH) resource for the UE to transmit a dynamic scheduling request (SR);
finding the DCI based on the configuration information;
finding the PUCCH resource based on a symbol location that is determined relative to a position of a PUCCH resource indicator (PRI) in the DCI; and
transmitting the dynamic SR in a PUCCH message based on the PUCCH resource, wherein uplink grant is performed based on the dynamic SR, wherein transmitting the dynamic SR includes transmitting a listen before talk (LBT) band for the network to identify a resource for the uplink grant.
5. The baseband processor of claim 4 , wherein the DCI is received over a channel during a specified channel occupancy time (COT).
6. The baseband processor of claim 4 , wherein the configuration information defines the DCI as positioned relative to numerology.
7. The baseband processor of claim 4 , wherein the configuration information defines the DCI as being part of downlink burst signaling.
8. The baseband processor of claim 4 , wherein the DCI includes the PUCCH resource indicator (PRI) having a bit field that indicates the PUCCH resource to be used for the dynamic SR.
9. The baseband processor of claim 8 , wherein the bit field indicates whether the PRI is associated with a hybrid automatic repeat request (HARQ) or the dynamic SR.
10. The baseband processor of claim 8 , wherein the UE finds the PUCCH resource based on a) a resource lookup different from a semi-static PUCCH lookup, and b) a relative first symbol location that is relative to a position of the PRI in the DCI.
11. The baseband processor of claim 4 , wherein the UE finds the PUCCH resource based on a) a subset of a semi-static PUCCH lookup, and b) a relative first symbol location that is relative to a position of the PRI in the DCI.
12. The baseband processor of claim 8 , wherein the dynamic SR is multiplexed with a hybrid automatic repeat request (HARQ) transmission.
13. The baseband processor of claim 4 , wherein the dynamic SR includes channel state information.
14. The baseband processor of claim 4 , wherein the UE is one of the one or more UE, and the DCI includes a plurality of bit fields, each bit field being assigned to a corresponding one of the one or more UE.
15. The baseband processor of claim 4 , wherein the UE transmits the dynamic SR if the PUCCH resource is successfully found, but does not transmit the dynamic SR if the PUCCH resource is not successfully found.
16. The baseband processor of claim 4 , wherein the dynamic SR includes information for the base station to identify resources for data transmission, the information including one or more of: a beam, a time slot to transmit, and bandwidth parts (BWPs).
17. The baseband processor of claim 4 , wherein a time interval is enforced between the receiving the DCI and transmitting the dynamic SR to be greater than or equal to a larger of a) a time required to change from one beam to another, or b) a processing time.