Scheduling request indication
Apparatuses, methods, and systems are disclosed for scheduling request indication. One apparatus ( 200 ) includes a transmitter ( 210 ) that transmits ( 602 ) a scheduling request in response to data arriving at a buffer. The scheduling request includes an indication of a traffic type, a requested number of scheduling transmissions, an expected number of transmissions, an expected scheduling interval, a latency requirement, or some combination thereof. The apparatus ( 200 ) also includes a receiver ( 212 ) that receives ( 604 ) an uplink grant in response to transmitting the scheduling request. The transmitter ( 210 ) transmits ( 606 ) the data in response to receiving the uplink grant.
1. An apparatus comprising:
a transmitter that transmits a scheduling request in response to data arriving at a buffer, wherein the scheduling request comprises a two bit indicator that indicates a group of states consisting of:
a first indication indicating a request for single-transmission scheduling in response to a size of the data in the buffer being below a first threshold;
a second indication indicating a request for multiple-transmission scheduling in response to the size of the data in the buffer being below a second threshold; and
a third indication indicating a request for a periodic transmission having a determined periodicity; and
a receiver that receives an uplink grant in response to transmitting the scheduling request, wherein the transmitter transmits the data in response to receiving the uplink grant.
2. The apparatus of claim 1 , wherein the transmitter transmits the scheduling request in an uplink control channel.
3. The apparatus of claim 1 , wherein the transmitter transmits the scheduling request in a physical resource region outside of a control channel used for an enhanced mobile broadband scheduling request and outside of a control channel used for uplink control information.
4. The apparatus of claim 1 , wherein the transmitter transmits the scheduling request in a spreading sequence space different from a spreading sequence space used for an enhanced mobile broadband scheduling request and different from a spreading sequence space used for uplink control information.
5. The apparatus of claim 1 , wherein the transmitter transmits the data in a grant-free transmission.
6. A method comprising:
transmitting a scheduling request in response to data arriving at a buffer, wherein the scheduling request comprises a two bit indicator that indicates a group of states consisting of:
a first indication indicating a request for single-transmission scheduling in response to a size of the data in the buffer being below a first threshold;
a second indication indicating a request for multiple-transmission scheduling in response to the size of the data in the buffer being below a second threshold; and
a third indication indicating a request for a periodic transmission having a determined periodicity;
receiving an uplink grant in response to transmitting the scheduling request; and
transmitting the data in response to receiving the uplink grant.
7. The method of claim 6 , wherein the indication indicates a single-shot schedule request with the size of the data below a predetermined threshold.
8. The method of claim 6 , wherein the indication indicates a multiple-shot schedule request with the size of the data below a predetermined threshold, wherein the multiple-shot schedule request comprises a request for multiple transmissions.
9. The method of claim 6 , wherein the indication indicates a periodic transmission schedule request with a predetermined periodicity.
10. The method of claim 6 , wherein the indication comprises two bits that indicate four different states, and each state of the four different states indicates a type of scheduling requested.
11. The method of claim 6 , wherein the indication comprises one bit that indicates a buffer status report will not be sent.