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:
Nov. 17, 2020
Filed:
Jun. 12, 2019
Applicant:
Telefonaktiebolaget Lm Ericsson (Publ), Stockholm, SE;
Inventors:
Assignee:
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04W 4/10 (2009.01); H04L 29/06 (2006.01); H04W 12/00 (2009.01); H04W 12/10 (2009.01); H04W 72/04 (2009.01);
U.S. Cl.
CPC ...
H04W 4/10 (2013.01); H04L 63/0428 (2013.01); H04L 63/0876 (2013.01); H04W 12/0017 (2019.01); H04W 12/1006 (2019.01); H04W 72/0453 (2013.01);
Abstract
A Mission-Critical Push-To-Talk (MCPTT) node is connected to a group of user equipments (UEs) served by the MCPTT node. The MCPTT node generates a Multimedia Broadcast and Multicast Service (MBMS) Subchannel Control Key (MSCCK), sends first messages to the UEs in unicast, wherein the first messages include the generated MSCCK, generates at least one MBMS subchannel control message, applies integrity protection and/or confidentiality protection to the at least one MBMS subchannel control message with the MSCCK, and sends the at least one MBMS subchannel control message in multicast.