Communication system and method for converging different access technologies

A communication system for converging different access technologies in the third generation (3G) or fourth generation (4G) mobile communication network, comprising:

• a convergence terminal, a first access network and a convergence core network, wherein the convergence core network comprises a first convergence access switch, a traffic server and a Home Subscriber Server (HSS), wherein
• the convergence terminal is configured to access a network converging different access technologies, and to transmit a traffic request message including a traffic identifier to the first convergence access switch via the first access network when the convergence terminal is required to perform traffic;
• the first convergence access switch is configured to acquire an address of the traffic server after the traffic request message including the traffic identifier is received, and to forward the traffic request message including the traffic identifier to the traffic server;
• the traffic server is configured to perform information interaction with the HSS after the traffic request message forwarded by the first convergence access switch is received, and to provide traffic through the network converging different access technologies when it is determined that the traffic server is able to provide the traffic to a user corresponding to the convergence terminal;
• and
• the HSS is configured to perform information interaction with the traffic server and to determine whether the traffic server is able to provide the traffic to the user corresponding to the convergence terminal;
• wherein the first convergence access switch is further configured to determine, according to an available resource condition of the first convergence access switch, whether the traffic is able to be provided to the user corresponding to the convergence terminal, and to acquire the address of the traffic server when it is determined that the traffic is able to be provided to the user corresponding to the convergence terminal;
• and
• the system further comprises a second access network, wherein the convergence core network further comprises a second convergence access switch, wherein
• the convergence terminal is further configured to, when a cell handover is necessary, complete a handover process through message interaction between the convergence terminal and the first access network, message interaction between the first access network and the first convergence access switch, message interaction between the first convergence access switch and the second convergence access switch, message interaction between the second convergence access switch and the second access network, message interaction between the second access network and the convergence terminal, and message interaction between the second convergence access switch and the HSS;
• the first access network is further configured to complete a handover process through message interaction with the convergence terminal and the first convergence access switch;
• the first convergence access switch is further configured to complete a handover process through message interaction with the first access network and the second convergence access switch;
• the second convergence access switch is further configured to complete a handover process through message interaction with the first convergence access switch, the second access network and the HSS;
• the second access network is further configured to complete a handover process through message interaction with the second convergence access switch and the convergence terminal;
• and
• the HSS is further configured to complete a handover process through message interaction with the second convergence access switch.