US Patent No. 9,258,689

TRANSFER OF TRIMMED COMMERCIAL MOBILE ALERT SYSTEM MESSAGES


Patent No. 9,258,689
Issue Date February 09, 2016 
Title Transfer Of Trimmed Commercial Mobile Alert System Messages
Inventorship Alex Shusterman, Vienna, VA (US)
Assignee Sprint Communications Company L.P., Overland Park, KS (US)

Claim of US Patent No. 9,258,689

1. A method of operating a management node in a wireless communication network to transfer Commercial Mobile Alert System
(CMAS) messages, the method comprising:
receiving a CMAS message transferred by an emergency authority system for transfer to users over the wireless communication
network, the CMAS message accompanied by a payload list of wireless access nodes that are affected by the CMAS message;

processing at least the CMAS message and the payload list to determine if one or more wireless access nodes associated with
a tracking area handled by the management node are indicated by the payload list;

when the one or more wireless access nodes associated with the tracking area are indicated by the payload list, determining
a trimmed payload list that includes at least one of the wireless access nodes associated with the tracking area and omits
at least wireless access nodes not associated with the tracking area;

transferring the CMAS message with the trimmed payload list for delivery to the at least one of the wireless access nodes;
and

identifying when individual users associated with the one or more wireless access nodes associated with the tracking area
do not receive the CMAS message, and retrying delivery of the CMAS message to wireless access nodes associated with the individual
users.