Verizon Patent and Licensing Inc.

Timothy R Vogel

Toby Varughese John

Jonathan Daniel Bahta

Yves Tegaboue

Uplink congestion control based on session initiation protocol (SIP) messaging includes receiving SIP messages from user equipment devices (UEs) via established wireless uplink connections; and monitoring a rate of the SIP messages received from the UEs. Uplink congestion control further includes identifying whether the rate of received SIP messages exceeds a first threshold during a first period of time; and sending SIP response messages to the UEs to reduce congestion on the wireless uplink connections upon identifying that the rate of received SIP messages exceeded the first threshold over the first period of time, where the sent SIP response messages instruct the UEs to resend the SIP messages after predetermined time delays.

Uplink congestion control based on sip messaging

Uplink congestion control based on SIP messaging

A method, a device, and a non-transitory storage medium having instructions to store a first access class barring parameter and a second access class barring parameter pertaining to emergency calls via a cell on which a wireless device is camped; receive an indication that an emergency call is to be established; select one or more values of the second barring parameter in response to a determination that a value of the first barring parameter indicates that the emergency call cannot be established via the cell; select a first candidate cell based on the one or more values of the second barring parameter; and determine whether the emergency call can be established via the first candidate cell based on the one or more values of the second barring parameter and system information pertaining to the first candidate cell.

Growing community of inventors

Trophy Club, TX, United States of America

Timothy R Vogel