# ULR - Update Location Request [[ULR - Update Location Request|ULR]] is a signaling message used in the mobile telecommunications network to request the update of a mobile subscriber's location. It is part of the [[SS7 - Signaling System No. 7]] protocol suite, specifically designed for use in [[GSM - Global System for Mobile communication]], [[UMTS - Universal Mobile Telecommunications Service]], and [[LTE - Long Term Evolution]] networks.