Patent ID: 9451442
Filing Date: 2016-09-20
CPC Classification: H04W

Claim Text:
1. A signaling reduction method in a communication network, comprising: registering a second mobility management network element with a home subscriber server (HSS) or a home location register (HLR) as a short messaging service (SMS) serving node of a user equipment; receiving, by the second mobility management network element, a notification sent by the HSS or the HLR when the user equipment registers with a mobile switching center (MSC) or a visitor location register (VLR), wherein the notification notifies the second mobility management network element of canceling the second mobility management network element serving as an SMS serving node of the user equipment; canceling, by the second mobility management network element, the registration of the second mobility management network element serving as the SMS serving node of the user equipment with the HSS or the HLR; and not cancelling, by the second mobility management network element, evolved packet system (EPS) service of the user equipment.