Mingjun Shan

Method, system and device for device capabilities exchange

METHOD, DEVICE AND CONTROL SYSTEM FOR ONLINE CHARGING ON ROAMING

Charging method and network system thereof, packet data network gateway and charging system thereof

Method for processing charging and network system, packet data network gateway and charging system

Charging method, charging network element, charging system, and communication system

Roaming on-line charging method, device and control system

A method, network system, pdn gw and accounting system for managing accounting

A charging method, a charging network element, a charging system and a communication system

Charging method, network system, charging system, and application server

Charging processing method, network system, charging system and service server