# US 12,114,330 B2 · Methods to enable scheduling and control of direct link communication in cellular communication systems

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- Number: US 12,114,330 B2
- Document ID: US12114330B2
- Status: Granted
- Kind: B2
- Application number: 18/109,043
- Filed: 2023-02-13
- Published: 2023-12-21
- Granted: 2024-10-08
- Earliest claimed: 2012-05-31
- Assignees: InterDigital Patent Holdings, Inc.
- Applicants: Interdigital Patent Holdings, Inc.
- Inventors: Ghyslain Pelletier; Diana Pani; Benoit Pelletier; Christopher R. Cave; Paul Marinier; Tao Deng; Gwenael Poitau; Kiran K. Vanganuru
- Web page: https://patentgrep.com/patent/US12114330B2

## CPC

- H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal
- H04L 1/1822: involving configuration of automatic repeat request [ARQ] with parallel processes
- H04L 5/0091: {Signalling for the administration of the divided path, e.g. signalling of configuration information}
- H04W 72/20: Control channels or signalling for resource management
- H04W 76/14: Direct-mode setup
- H04L 1/1896: {ARQ related signaling}
- H04W 72/12: Wireless traffic scheduling
- H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network
- H04W 92/18: between terminal devices
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

A method for WTRU autonomous resource selection may comprise receiving a TX resource pool for D2D communication from a base station. The WTRU may sense one or more resources of the TX resource pool and determine resources for transmission of control information and D2D data, based on the sensing. The WTRU may then transmit, to another WTRU, the control information and the D2D data on the determined resources.

## Claims

### Claim 1

A method performed by a first wireless transmit/receive unit (WTRU) the method comprising:
receiving an indication of allowed resources;
transmitting a first data transmission to a second WTRU using the allowed resources;
receiving hybrid automatic repeat request (HARQ) feedback from the second WTRU;
transmitting the HARQ feedback to a base station on a dedicated uplink (UL) channel; and
transmitting a retransmission to the second WTRU using the allowed resources.

### Claim 2 (depends on 1)

The method of claim 1, wherein the first data transmission is transmitted in accordance with a priority level and a maximum power level.

### Claim 3 (depends on 1)

The method of claim 1, wherein the first data transmission is transmitted in accordance with a maximum delay time.

### Claim 4 (depends on 1)

The method of claim 1, wherein the indication of allowed resources is received prior to transmitting the first data transmission.

### Claim 5 (depends on 1)

The method of claim 1, further comprising receiving HARQ information from the base station, based on the HARQ feedback.

### Claim 6 (depends on 5)

The method of claim 5, further comprising transmitting a second transmission to the second WTRU, based on the HARQ information.

### Claim 7

A first wireless transmit/receive unit (WTRU) comprising:
a receiver configured to receive an indication of allowed resources;
a transmitter configured to transmit to a second WTRU a first data transmission using the allowed resources;
the receiver further configured to receive hybrid automatic repeat request (HARQ) feedback from the second WTRU;
the transmitter configured to transmit the HARQ feedback to a base station on a dedicated uplink (UL) channel; and
the transmitter configured to transmit a retransmission to the second WTRU using the allowed resources.

### Claim 8 (depends on 7)

The WTRU of claim 7, wherein the first data transmission is transmitted in accordance with a priority level and a maximum power level.

### Claim 9 (depends on 7)

The WTRU of claim 7, wherein the first data transmission is transmitted in accordance with a maximum delay time.

### Claim 10 (depends on 7)

The WTRU of claim 7, wherein the indication of allowed resources is received prior to transmitting the first data transmission.

### Claim 11 (depends on 7)

The WTRU of claim 7, wherein the receiver is further configured to receive HARQ information from the base station, based on the HARQ feedback.

### Claim 12 (depends on 11)

The WTRU of claim 11, wherein the transmitter is further configured to transmit a second transmission to the second WTRU, based on the HARQ information.