The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 16, 2025
Filed:
Sep. 25, 2019
Interdigital Patent Holdings, Inc., Wilmington, DE (US);
Martino M. Freda, Laval, CA;
Tao Deng, Roslyn, NY (US);
Tuong Duc Hoang, Montreal, CA;
Aata El Hamss, Laval, CA;
Michelle Perras, Montreal, CA;
InterDigital Patent Holdings, Inc., Wilmington, DE (US);
Abstract
Systems, methods, and devices for unicast and/or multicast link establishment and maintenance. A wireless transmit receive unit (WTRU) may send a link establishment request broadcast message, wherein in the link may be for multicast, unicast, or groupcast. The WTRU may receive a link establishment response broadcast message and a connectivity report. The WTRU may then send a link establishment confirmation broadcast message once a multicast or unicast link has been established, at which point the WTRU may send and receive a multicast message. The link establishment request message may be sent based on one or more triggers: receiving a QoS flow, needing a new sidelink radio bearer, determining that a new QoS flow or radio bearer requires network controlled admission control, and/or receive a unicast and/or multicast establishment request. The WTRU may transmit a unicast and/or multicast usability signal (UMUS). The WTRU may preempt the established multicast or unicast link.