Minimum documentation searched (classification system followed by classification symbols):
Documentation searched other than minimum documentation to the extent that such documents are included in the fields searched:
Electronic data base consulted during the international search (name of data base and, where practicable, search terms used):
CNKI, CNPAT, EPODOC, WPI: steer traffic, traffic steer, traffic, steer, policy, rule, criteria, mobile network, mobile virtual network, software defined network, SDN, value added service, VAS, operator, public land mobile network, PLMN, ID, identity, IMSI, international mobile subscriber identification number