# US 2018/0324832 A1 · Scheduling request for wireless systems

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- Number: US 2018/0324832 A1
- Document ID: US20180324832A1
- Status: Published application
- Kind: A1
- Application number: 15/894,734
- Filed: 2018-02-12
- Published: 2018-11-08
- Earliest claimed: 2017-05-05
- Assignees: QUALCOMM Incorporated
- Applicants: QUALCOMM Incorporated
- Inventors: Linhai He; Gavin Bernard Horn
- Web page: https://patentgrep.com/patent/US20180324832A1

## CPC

- H04W 72/569: {of the traffic information}
- H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network
- H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal
- H04W 72/56: based on priority criteria
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

Methods, systems, and devices for wireless communication are described that provide for a single bit or multiple bit scheduling request (SR). The SR may be transmitted by a user equipment (UE) to a base station and may indicate that the UE has data to be transmitted to the base station. The SR may include an indication of the priority level associated with the data to be transmitted to the base station, which may be based on the data type, logical channel, or numerology associated with the data to be transmitted to the base station.

## Claims

### Claim 1

A method for wireless communication, comprising:
identifying, at a user equipment (UE), that the UE has data in a buffer to be transmitted to a base station;
determining a priority level for the data in the buffer to be transmitted to the base station based at least in part on a logical channel for the data, or a data type associated with the data, or a combination thereof; and
transmitting, to the base station, a scheduling request (SR) that indicates the priority level for the data.

### Claim 2 (depends on 1)

The method of claim 1, wherein:
the SR includes an indication of the determined priority level using a bit field of the SR.

### Claim 3 (depends on 2)

The method of claim 2, wherein:
the bit field of the SR comprises a plurality of bits to indicate the determined priority level.

### Claim 4 (depends on 1)

The method of claim 1, further comprising:
selecting, based at least in part on the determined priority level, a first set of radio resources of a plurality of sets of radio resources to be used to transmit the SR, wherein transmitting the SR comprises transmitting the SR using the identified first set of radio resources.

### Claim 5 (depends on 1)

The method of claim 1, further comprising:
receiving, from the base station, an uplink grant for transmission of the data in uplink message;
identifying uplink resources for the uplink message based at least in part on the uplink grant; and
transmitting, using the identified uplink resources, the uplink message comprising the data.

### Claim 6 (depends on 5)

The method of claim 5, wherein:
the uplink grant indicates resources that correspond to the logical channel for transmission of the data.

### Claim 7 (depends on 5)

The method of claim 5, wherein:
the SR is transmitted on a different set of resources than the identified uplink resources.

### Claim 8 (depends on 1)

The method of claim 1, further comprising:
selecting an SR configuration for transmission of the SR based at least in part on the determined priority level.

### Claim 9 (depends on 1)

The method of claim 1, further comprising:
identifying that the determined priority level exceeds a threshold, wherein the SR is transmitted based at least in part on the identification that the determined priority level exceeds the threshold.

### Claim 10 (depends on 1)

The method of claim 1, wherein:
one or both of the logical channel for the data and the determined priority level correspond to a numerology.

### Claim 11 (depends on 1)

The method of claim 1, further comprising:
transmitting, to the base station, a second SR based at least in part on an identification that the UE has additional data to be transmitted to the base station, wherein the SR corresponds to a first time period that is less than a second time period corresponding to the second SR.

### Claim 12 (depends on 1)

The method of claim 1, further comprising:
identifying, by the UE, that the UE has additional data to be transmitted to the base station; and
determining a second priority level for the additional data based at least in part on a logical channel for the additional data, or a data type associated with the additional data, or a combination thereof, wherein transmitting the SR is based at least in part on the priority level being greater than the second priority level.

### Claim 13 (depends on 1)

The method of claim 1, wherein:
the SR includes an indication of a buffer status for the data to be transmitted to the base station.

### Claim 14 (depends on 1)

The method of claim 1, further comprising:
receiving, from the base station, a mapping that indicates a correspondence between values for the SR and priority levels for multiple logical channels.

### Claim 15 (depends on 1)

The method of claim 1, further comprising:
identifying a target numerology for the data to be transmitted to the base station, wherein the SR indicates the target numerology.

### Claim 16 (depends on 15)

The method of claim 15, further comprising:
selecting an SR configuration for transmission of the SR based at least in part on the target numerology.

### Claim 17 (depends on 1)

The method of claim 1, wherein:
the SR is transmitted over a dedicated set of resources.

### Claim 18

A method for wireless communication, comprising:
receiving, by a base station, a scheduling request (SR) that indicates a user equipment (UE) has data in a buffer to transmit to the base station, and a priority level for the data;
determining the priority level of the data based at least in part on the SR;
identifying resources for transmission of the data based at least in part on the priority level; and
transmitting, to the UE, an uplink grant indicating the identified resources.

### Claim 19 (depends on 18)

The method of claim 18, wherein:
the SR includes an indication of the determined priority level using a bit field of the SR.

### Claim 20 (depends on 19)

The method of claim 19, wherein:
the bit field of the SR comprises a plurality of bits to indicate the determined priority level.

### Claim 21 (depends on 18)

The method of claim 18, further comprising:
identifying a first set of radio resources of a plurality of sets of radio resources used to receive the SR, wherein determining the priority level is based at least in part on the identified first set of radio resources.

### Claim 22 (depends on 18)

The method of claim 18, further comprising:
receiving, from the UE and over the identified resources for transmission of the data, an uplink message that comprises the data based at least in part on the uplink grant.

### Claim 23 (depends on 22)

The method of claim 22, wherein:
the SR is received on a different set of radio resources than the uplink message.

### Claim 24 (depends on 18)

The method of claim 18, wherein:
the uplink grant indicates resources that correspond to a logical channel to be used for transmission of the data.

### Claim 25 (depends on 18)

The method of claim 18, wherein:
the priority level is determined based at least in part on a numerology indicated by the SR.

### Claim 26 (depends on 25)

The method of claim 25, wherein:
the SR is received according to the numerology; and
the identified resources are identified based at least in part on the numerology.

### Claim 27 (depends on 18)

The method of claim 18, further comprising:
transmitting, to the UE, a mapping that indicates a correspondence between values for the SR and priority levels for multiple logical channels.

### Claim 28 (depends on 18)

The method of claim 18, wherein:
the SR further includes an indication of a buffer status for the data to be transmitted to the base station.

### Claim 29

An apparatus for wireless communication, comprising:
a processor;
memory in electronic communication with the processor; and
instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to:
identify, at a user equipment (UE), that the UE has data in a buffer to be transmitted to a base station;
determine a priority level for the data in the buffer to be transmitted to the base station based at least in part on a logical channel for the data, or a data type associated with the data, or a combination thereof; and
transmit, to the base station, a scheduling request (SR) that indicates the priority level for the data.

### Claim 30

An apparatus for wireless communication, comprising:
a processor;
memory in electronic communication with the processor; and
instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to:
receive, by a base station, a scheduling request (SR) that indicates a user equipment (UE) has data in a buffer to transmit to the base station, and a priority level for the data;
determine the priority level of the data based at least in part on the SR;
identify resources for transmission of the data based at least in part on the priority level; and
transmit, to the UE, an uplink grant indicating the identified resources.
