# US 2021/0243836 A1 · Discontinuous operation on sidelink

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- Number: US 2021/0243836 A1
- Document ID: US20210243836A1
- Status: Published application
- Kind: A1
- Application number: 17/148,198
- Filed: 2021-01-13
- Published: 2021-08-05
- Earliest claimed: 2020-01-31
- Assignees: QUALCOMM Incorporated
- Applicants: Qualcomm Incorporated
- Inventors: Shuanshaun Wu; Anantharaman Balasubramanian; Gabi Sarkis; Kapil Gulati; Sudhir Kumar Baghel; Shailesh Patil; Tien Viet Nguyen
- Web page: https://patentgrep.com/patent/US20210243836A1

## CPC

- H04W 76/14: Direct-mode setup
- H04W 76/28: Discontinuous transmission [DTX]; Discontinuous reception [DRX]
- H04W 28/18: Negotiating wireless communication parameters
- H04W 52/0216: {using a pre-established activity schedule, e.g. traffic indication frame}
- H04W 72/20: Control channels or signalling for resource management
- H04W 80/02: Data link layer protocols
- H04W 52/0229: {where the received signal is a wanted signal}
- H04W 88/04: adapted for relaying to or from another terminal or user
- H04W 92/18: between terminal devices
- Y02D 30/70: in wireless communication networks
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE

## Abstract

Wireless communication systems and methods related to sidelink communications are provided. A first user equipment (UE) determines a discontinuous operation configuration that indicates an on-duration period for a sidelink communication and a cycle of discontinuous operation. The first UE communicates with at least one other UE during the on-duration period indicated by the discontinuous operation configuration. The first UE uses a base configuration and an on-duration parameter, an offset parameter, and a cycle parameter to determine a discontinuous operation configuration for the first UE.

## Claims

### Claim 1

An apparatus, comprising:
a processor configured to:
access, at a first user equipment (UE), a base configuration for determining a discontinuous operation configuration for the first UE; and
determine, by applying at least one parameter to the base configuration, the discontinuous operation configuration that indicates an on-duration period for a sidelink communication and a cycle of discontinuous operation.

### Claim 2 (depends on 1)

The apparatus of claim 1, wherein the base configuration includes a discontinuous operation cycle base unit and a plurality of base units in the discontinuous operation cycle base unit.

### Claim 3 (depends on 2)

The apparatus of claim 2, wherein the processor is further configured to:
determine the on-duration period in the discontinuous operation configuration using an on-duration parameter in the at least one parameter and at least one base unit in the plurality of base units of the base configuration.

### Claim 4 (depends on 2)

The apparatus of claim 2, wherein the processor is further configured to:
determine an offset from a beginning of a cycle to the on-duration period in the discontinuous operation configuration using an offset parameter in the at least one parameter and at least one base unit in the plurality of base units of the base configuration.

### Claim 5 (depends on 2)

The apparatus of claim 2, wherein the processor is further configured to:
determine a cycle in the discontinuous operation configuration using a cycle parameter in the at least one parameter and the discontinuous operation cycle base unit of the base configuration.

### Claim 6 (depends on 1)

The apparatus of claim 1, wherein the processor is further configured to:
store a look-up table that includes a plurality of discontinuous operation configurations based on the base configuration and at least one of an on-duration parameter, an offset parameter, and a cycle parameter.

### Claim 7 (depends on 1)

The apparatus of claim 1, wherein the discontinuous operation configuration is a discontinuous transmission (DTX) configuration that defines a DTX cycle.

### Claim 8 (depends on 7)

The apparatus of claim 7, further comprising a transceiver in communication with the processor and configured to transmit data over a sidelink during the on-duration period in the DTX cycle.

### Claim 9 (depends on 7)

The apparatus of claim 7, further comprising a transceiver in communication with the processor and configured to:
transmit the DTX configuration to a second UE over a sidelink;
receive a discontinuous reception (DRX) configuration that indicates an on-duration period and a DRX cycle of the second UE, wherein the on-duration period indicated by the DRX configuration is aligned with the on-duration period indicated by the DTX configuration; and
transmit data from the first UE to the second UE over the sidelink during the on-duration period of the DTX cycle to be received by the second UE during the on-duration period of an DRX cycle.

### Claim 10 (depends on 1)

The apparatus of claim 1, wherein the discontinuous operation configuration is a discontinuous reception (DRX) configuration that defines a DRX cycle.

### Claim 11 (depends on 10)

The apparatus of claim 10, further comprising a transceiver in communication with the processor and configured to receive data over a sidelink during the on-duration period in the DRX cycle.

### Claim 12 (depends on 10)

The apparatus of claim 10, further comprising a transceiver in communication with the processor and configured to:
transmit the DRX configuration to a second UE over a sidelink;
receive a DTX configuration that indicates an on-duration period and a DTX cycle of the second UE, wherein the on-duration period indicated by the DTX configuration is aligned with the on-duration period indicated by the DRX configuration; and
receive data from the second UE over the sidelink during the on-duration period of the DRX cycle to be transmitted by the second UE during the on-duration period of a DTX cycle.

### Claim 13 (depends on 1)

The apparatus of claim 1, further comprising a transceiver in communication with the processor and configured to transmit the discontinuous operation configuration over a sidelink control signaling.

### Claim 14 (depends on 13)

The apparatus of claim 13, wherein the discontinuous operation configuration is transmitted using a sidelink control information (SCI) in the sidelink control signaling.

### Claim 15 (depends on 1)

The apparatus of claim 1, wherein the discontinuous operation configuration is transmitted using a MAC control element.

### Claim 16

A method, comprising:
accessing, at a first user equipment (UE), a base configuration for determining a discontinuous operation configuration for the first UE; and
determining, by applying at least one parameter to the base configuration, the discontinuous operation configuration that indicates an on-duration period for a sidelink communication and a cycle of discontinuous operation.

### Claim 17 (depends on 16)

The method of claim 16, wherein the base configuration includes a discontinuous operation cycle base unit and a plurality of base units in the discontinuous operation cycle base unit.

### Claim 18 (depends on 17)

The method of claim 17, further comprising:
determining the on-duration period in the discontinuous operation configuration using an on-duration parameter in the at least one parameter and at least one base unit in the plurality of base units of the base configuration.

### Claim 19 (depends on 17)

The method of claim 17, further comprising:
determining an offset from a beginning of a cycle to the on-duration period in the discontinuous operation configuration using an offset parameter in the at least one parameter and at least one base unit in the plurality of base units of the base configuration.

### Claim 20 (depends on 17)

The method of claim 17, further comprising:
determining a cycle in the discontinuous operation configuration using a cycle parameter in the at least one parameter and the discontinuous operation cycle base unit of the base configuration.

### Claim 21 (depends on 16)

The method of claim 16, further comprising:
storing a look-up table that includes a plurality of discontinuous operation configurations based on the base configuration and at least one of an on-duration parameter, an offset parameter, and a cycle parameter.

### Claim 22 (depends on 16)

The method of claim 16, wherein the discontinuous operation configuration is a discontinuous transmission (DTX) configuration that defines a DTX cycle.

### Claim 23 (depends on 22)

The method of claim 22, further comprising:
transmitting data over a sidelink during the on-duration period in the DTX cycle.

### Claim 24 (depends on 22)

The method of claim 22, further comprising:
transmitting the DTX configuration to a second UE over a sidelink;
receiving a discontinuous reception (DRX) configuration that indicates an on-duration period and a DRX cycle of the second UE, wherein the on-duration period indicated by the DRX configuration is aligned with the on-duration period indicated by the DTX configuration; and
transmitting data from the first UE to the second UE over the sidelink during the on-duration period of the DTX cycle to be received by the second UE during the on-duration period of an DRX cycle.

### Claim 25 (depends on 16)

The method of claim 16, wherein the discontinuous operation configuration is a discontinuous reception (DRX) configuration that defines a DRX cycle.

### Claim 26 (depends on 25)

The method of claim 25, further comprising:
receiving data over a sidelink during the on-duration period in the DRX cycle.

### Claim 27 (depends on 25)

The method of claim 25, further comprising:
transmitting the DRX configuration to a second UE over a sidelink;
receiving a DTX configuration that indicates an on-duration period and a DTX cycle of the second UE, wherein the on-duration period indicated by the DTX configuration is aligned with the on-duration period indicated by the DRX configuration; and
receiving data from the second UE over the sidelink during the on-duration period of the DRX cycle to be transmitted by the second UE during the on-duration period of a DTX cycle.

### Claim 28 (depends on 16)

The method of claim 16, further comprising a transceiver in communication with the processor and configured to transmit the discontinuous operation configuration over a sidelink control signaling.

### Claim 29

A user equipment (UE), comprising:
means for accessing a base configuration for determining a discontinuous operation configuration for the first UE; and
means for determining, by applying at least one parameter to the base configuration, the discontinuous operation configuration that indicates an on-duration period for a sidelink communication and a cycle of discontinuous operation.

### Claim 30

A non-transitory computer-readable medium having program code recorded thereon, the program code comprising:
code for accessing, at a first user equipment (UE), a base configuration for determining a discontinuous operation configuration for the first UE; and
code for determining, by applying at least one parameter to the base configuration, the discontinuous operation configuration that indicates an on-duration period for a sidelink communication and a cycle of discontinuous operation.