Patent ID: 9210649
Filing Date: 2015-12-08
Classification: H04W

Abstract:
1. A method of controlling the use of mobile telecommunications network selection data by a user device, wherein said network selection data in the form of a tree structure is stored at the user device, the method comprising: checking at least one of a first and a second operator identity associated with the network selection data, wherein the at least one of the first and the second operator identity identifies an original provider of the said network selection data and is located in a path of the tree structure; and determining based on the original provider identified by the at least one of the first and the second operator identity whether the original provider of the said network selection data is such that said user device can make use of said data, wherein the tree structure comprises: parent nodes being a parent policy node containing multiple instances of policies for intersystem mobility relating to respective operators and a parent discovery node containing multiple instances of access network discovery information relating to the respective operators, a first policy instance and a first discovery instance relating to a first operator wherein each of the first policy instance and the first discovery instance contain the first operator identity as a leaf located below a first policy node and a first discovery node, respectively, and a second policy instance and a second discovery instance of a second operator, wherein each of the second policy instance and the second discovery instance contain the second operator identity as a leaf located below a second policy node and a second discovery node, respectively, wherein the first operator identity leaves are linked to the parent nodes via respective single intermediate nodes being the first policy node and being the first discovery node, and the second operator identity leaves are linked to the parent nodes via respective single intermediate nodes being the second policy node and being the second discovery node.