# US 12,604,362 B2 · Discontinuous reception configuration for sidelink communication

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 12,604,362 B2
- Document ID: US12604362B2
- Status: Granted
- Kind: B2
- Application number: 18/256,006
- Filed: 2021-12-06
- Published: 2024-02-15
- Granted: 2026-04-14
- Earliest claimed: 2020-12-04
- Assignees: Lenovo (Singapore) Pte. Ltd.
- Applicants: Lenovo (Singapore) Pte. Ltd.
- Inventors: Prateek Basu Mallick; Karthikeyan Ganesan; Joachim Loehr; Ravi Kuchibhotla
- Web page: https://patentgrep.com/patent/US12604362B2

## CPC

- H04W 76/28: Discontinuous transmission [DTX]; Discontinuous reception [DRX]
- H04W 72/25: between terminals via a wireless link, e.g. sidelink
- H04W 72/02: Selection of wireless resources by user or terminal
- H04W 76/14: Direct-mode setup
- H04W 76/23: Manipulation of direct-mode connections
- H04W 92/16: Interfaces between hierarchically similar devices
- 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

Apparatuses, methods, and systems are disclosed for inter-UE coordination when using SL discontinuous reception (“DRX”). One apparatus includes a transceiver and a processor that determines a DRX configuration that is to be used towards a peer UE, where the DRX configuration includes an active time during which sidelink data is exchanged with the peer UE. The processor determines a set of resources for sidelink communication and identifies an intersection of the active time and the set of resources. The transceiver transmits to the peer UE an indication of the identified intersection of the active time and the set of resources.

## Claims

### Claim 1

A method performed by a receiver User Equipment (“UE”), the method comprising:
determining a discontinuous reception (“DRX”) configuration that is to be used towards a peer transmitter UE, the DRX configuration comprising an active time during which sidelink data is exchanged with the peer transmitter UE;
determining a set of resources for sidelink communication by performing a sensing procedure;
identifying an intersection of the active time and the set of resources, wherein the intersection comprises a modified set of resources; and
transmitting an indication of the identified intersection to the peer transmitter UE.

### Claim 2 (depends on 1)

The method of claim 1, wherein determining the set of resources further comprises performing a sidelink resource selection procedure, wherein the determined set of resources comprises one or more of: a preferable resource based on a sensing result, a non-preferable resource based on the sensing result, or a resource having a potential collision.

### Claim 3 (depends on 1)

The method of claim 1, wherein the active time comprises a common active period aligned between the receiver UE and the peer transmitter UE.

### Claim 4 (depends on 3)

The method of claim 3, further comprising receiving a higher layer parameter that indicates the common active period.

### Claim 5 (depends on 3)

The method of claim 3, wherein an amount of intersecting candidate resources in the common active period is less than a predetermined amount, wherein transmitting the indication of the identified intersection comprises transmitting a preferred resource outside the common active period.

### Claim 6 (depends on 1)

The method of claim 1, wherein determining the set of resources comprises receiving at a MAC layer a candidate report from a physical layer, wherein the MAC layer identifies the intersection of the active time and the set of resources.

### Claim 7 (depends on 1)

The method of claim 1, further comprising:
determining an additional modified set of resources when indicating a negative acknowledgement (“NACK”) on a physical uplink control channel (“PUCCH”) to request a re-transmission grant; and
sending an inter-UE coordination (“IUC”) report to the peer transmitter UE, wherein the IUC report comprises the additional modified set of resources.

### Claim 8 (depends on 1)

The method of claim 1, further comprising:
determining an additional modified set of resources when performing one of:
transmitting a sidelink scheduling request to a serving RAN,
transmitting a sidelink buffer status report to the serving RAN, and
receiving a request for a sidelink channel state information (“CSI”) report from the peer transmitter UE; and
sending an inter-UE coordination (“IUC”) report to the peer transmitter UE, wherein the IUC report comprises the additional modified set of resources.

### Claim 9 (depends on 1)

The method of claim 1, further comprising receiving a request for inter-UE coordination (“IUC”) from the peer transmitter UE, wherein the indication of the identified intersection is transmitted in response to the IUC request.

### Claim 10

A User Equipment (“UE”), comprising:
at least one memory; and
at least one processor coupled with the at least one memory and configured to cause the UE to:
determine a discontinuous reception (“DRX”) configuration that is to be used towards a peer transmitter UE, the DRX configuration comprising an active time during which sidelink data is exchanged with the peer transmitter UE;
determine a set of resources for sidelink communication by performing a sensing procedure;
identify an intersection of the active time and the set of resources, wherein the intersection comprises a modified set of resources; and
transmit an indication of the identified intersection to the peer transmitter UE.

### Claim 11

A User Equipment (“UE”), comprising:
at least one memory; and
at least one processor coupled with the at least one memory and configured to cause the UE to:
receive, from a peer receiver UE, an indication of an intersection of a set of resources for sidelink communication and a discontinuous reception (“DRX”) configuration active time during which sidelink data is to be exchanged with the peer receiver UE, wherein the set of resources for sidelink communication are determined by performing a sensing procedure and the intersection comprises a modified set of resources;
perform resource selection from the set of resources for an initial transmission to the peer receiver UE, said resource selection based on the DRX configuration active time of the peer receiver UE; and
transmit sidelink data to the peer receiver UE during the active time using the selected resources.

### Claim 12 (depends on 11)

The UE of claim 11, wherein the DRX configuration active time comprises a time where a sidelink DRX timer is already running or is to run in the future.

### Claim 13 (depends on 11)

The UE of claim 11, wherein the at least one processor is further configured to cause the UE to send a request for inter-UE coordination (“IUC”), wherein the indication of the intersection is received in response to the IUC request.

### Claim 14 (depends on 11)

The UE of claim 11, wherein the at least one processor is further configured to cause the UE to update a DRX configuration of the UE based on the received indication of the intersection of the set of resources, wherein the DRX configuration active time comprises a common active period aligned between the UE and the peer receiver UE.

### Claim 15 (depends on 11)

The UE of claim 11,
wherein the at least one processor is further configured to cause the UE to:
determine an additional modified set of resources when requesting a sidelink channel state information (“CSI”) report from the peer receiver UE, and
transmit an inter-UE coordination (“IUC”) report to the peer receiver UE, wherein the IUC report comprises the additional modified set of resources.

### Claim 16 (depends on 1)

The method of claim 1, wherein the set of resources comprises resources within the active time and resources outside of the active time.

### Claim 17 (depends on 16)

The method of claim 16, wherein the modified set of resources comprises the resources within the active time.

### Claim 18 (depends on 10)

The UE of claim 10, wherein the set of resources comprises resources within the active time and resources outside of the active time, and wherein the modified set of resources comprises the resources within the active time.

### Claim 19 (depends on 11)

The UE of claim 11, wherein the set of resources comprises resources within the active time and resources outside of the active time.

### Claim 20 (depends on 19)

The UE of claim 19, wherein the modified set of resources comprises the resources within the active time.