Wireless communication scheduling
Aspects of the disclosure are directed to an apparatus configured for wireless communication. In certain aspects, the apparatus is configured to generate data (e.g., generate uplink data and store the data in a buffer until uplink resources are granted for transmission of the data). In certain aspects, the apparatus is configured to transmit, to a network node, a scheduling request (SR) comprising an indication of a size of the generated data, wherein the indication of the size of the generated data is configured to indicate whether the size of the generated data is greater than or equal to a threshold value, or less than or equal to the threshold value.
1 . An apparatus configured for wireless communication, comprising:
at least one memory comprising instructions; and
one or more processors configured to execute the instructions to cause the apparatus to:
generate data;
output, for transmission to a network node, a scheduling request (SR) comprising an indication of a size of the generated data, wherein the indication of the size of the generated data is configured to indicate whether the size of the generated data is greater than or equal to a threshold value, or less than the threshold value;
when the SR indicates that the size of the generated data is greater than or equal to the threshold value, output, for transmission to the network node, a short buffer status report (BSR) configured to indicate an actual size of the generated data; and
when the SR indicates that the size of the generated data is less than the threshold value, refrain from outputting the short BSR.
2 . The apparatus of claim 1 , wherein the SR is output for transmission in a first slot, and wherein the short BSR is output for transmission in a second slot subsequent to the first slot.
3 . The apparatus of claim 1 , wherein the one or more processors are further configured to cause the apparatus to:
when the SR indicates that the size of the generated data is greater than or equal to the threshold value, obtain, from the network node, a grant for resources via which the generated data will be output for transmission, wherein the resources are based on the actual size of the data; and
when the SR indicates that the size of the generated data is less than the threshold value, obtain, from the network node, the grant for resources, wherein the resources are based on the threshold value.
4 . The apparatus of claim 1 , wherein the one or more processors are further configured to cause the apparatus to:
obtain, from the network node, a configuration message comprising an indication of the threshold value.
5 . The apparatus of claim 4 , wherein the configuration message is obtained via a radio resource control (RRC) message, a medium access control (MAC) control element (MAC-CE), downlink control information (DCI), or a physical downlink shared channel (PDSCH).
6 . The apparatus of claim 1 , wherein the indication of the size of the generated data is a 1-bit value.
7 . The apparatus of claim 1 , wherein the indication of the size of the generated data comprises a first value indicated by a bit obtained based on the SR, and a second value indicated by a cyclic shift of the SR.
8 . A user equipment (UE), comprising:
at least one transceiver;
at least one memory comprising instructions; and
one or more processors configured to execute the instructions to cause the UE to:
generate data;
transmit, via the at least one transceiver, a scheduling request (SR) comprising an indication of a size of the generated data, wherein the indication of the size of the generated data is configured to indicate whether the size of the generated data is greater than or equal to a threshold value, or less than the threshold value;
when the SR indicates that the size of the generated data is greater than or equal to the threshold value, transmit, via the at least one transceiver, a short buffer status report (BSR) configured to indicate an actual size of the generated data; and
when the SR indicates that the size of the generated data is less than the threshold value, refrain from transmitting the short BSR.
9 . A method for wireless communications at a first wireless node, comprising:
generating data;
outputting, for transmission to a second wireless node, a scheduling request (SR) comprising an indication of a size of the generated data, wherein the indication of the size of the generated data is configured to indicate whether the size of the generated data is greater than or equal to a threshold value, or less than the threshold value;
when the SR indicates that the size of the generated data is greater than or equal to the threshold value, outputting, for transmission to the second wireless node, a short buffer status report (BSR) configured to indicate an actual size of the generated data; and
when the SR indicates that the size of the generated data is less than the threshold value, refraining from outputting the short BSR.
10 . The method of claim 9 , wherein the SR is transmitted in a first slot, and wherein the short BSR is transmitted in a second slot subsequent to the first slot.
11 . The method of claim 9 , further comprising:
obtaining a grant for resources via which the generated data will be transmitted, wherein the resources are based on the actual size of the data.
12 . The method of claim 9 , further comprising:
when the SR indicates that the size of the generated data is greater than or equal to the threshold value, obtaining a grant for resources via which the generated data will be output for transmission, wherein the resources are based on the threshold value; and
when the SR indicates that the size of the generated data is less than the threshold value, obtaining the grant for resources, wherein the resources are based on the threshold value.
13 . The method of claim 9 , further comprising:
obtaining a configuration message comprising an indication of the threshold value.
14 . The method of claim 13 , wherein the configuration message is received via a radio resource control (RRC) message, a medium access control (MAC) control element (MAC-CE), downlink control information (DCI), or a physical downlink shared channel (PDSCH).
15 . The method of claim 9 , wherein the indication of the size of the generated data is a 1-bit value.
16 . The method of claim 9 , wherein the indication of the size of the generated data comprises a first value indicated by a bit obtained based on the SR, and a second value indicated by a cyclic shift of the SR.