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. 09, 2025
Filed:
Aug. 13, 2020
Telefonaktiebolaget Lm Ericsson (Publ), Stockholm, SE;
Antonino Orsino, Kirkkonummi, FI;
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Abstract
Radio Link Failure (RLF) recovery over Sidelink (SL) is provided. Systems and methods are disclosed herein that avoid triggering of a Radio Resource Control (RRC) re-establishment procedure by a User Equipment (UE) upon an RLF, thereby avoiding unnecessary signaling overhead and connectivity interruption. In some embodiments, the UE (UE1) is in communication with another UE (UE2) over an SL, and UE1 detects an RLF over a radio link. Upon detecting the RLF, UE1 sends a failure message to UE2 via an SL channel identifying the detected RLF. Upon receiving the failure message from UE1, UE2 forwards the message to the network via an available Uu link between UE2 and the network. In some embodiments, before sending the failure message to the network, UE2 performs a random access procedure to a selected cell if no Uu radio link is available and active.