Patent ID: 9118558
Filing Date: 2015-08-25
Classification: G06F,H04L

Abstract:
1. A method of upgrading software in network elements of a telecommunications network where operation of a plurality of network elements of a first type depends on operation of a network element of a second type, the method comprising: receiving upgrade packages by the network element of the second type and at least part of the network elements of the first type; entering a waiting state by the at least part of the network elements of the first type; and starting upgrade of the at least part of the network elements of the first type when upgrading of the network element of the second type, including an impacting of traffic handling by the network element of the second type, is detected, wherein said network elements of the first type receive a message from the network element of the second type indicating that the network element of the second type cannot handle any traffic and said at least part of the network elements of the first type use this message as a trigger to start the upgrade.