GSM/UMTS emulator

1. An emulation system for emulating a wireless communication network including a mobile phone and a mobile terminal, the emulation system comprising:

a terminal PC that emulates the mobile phone; and

a server coupled to the terminal PC via a local link, wherein the server emulates the mobile terminal, and the server includes a performance driver that emulates GSM/UMTS network performance including emulation of a plurality of connection modes for the same type of communication between the mobile terminal and GSM/UMTS network, wherein:

the terminal PC includes a multiplexer and a point-to-point protocol (PPP) client, and the server includes a PPP server and a multiplexer that corresponds to the multiplexer in the terminal PC; and

each of the terminal PC and the server includes a respective network interface card and one or more drivers for redirecting packets between the multiplexers and the network interface cards.

2. The emulation system of claim 1 , wherein the performance driver influences a behavior of a packet according to a user-defined profile.

3. The emulation system of claim 1 , wherein the performance driver influences a behavior of a packet according to a configuration that emulates an effect of the network to the packet.

4. The emulation system of claim 3 , wherein the effect of the network is at least one of bandwidth restriction, packet delay, and packet loss.

5. The emulation system of claim 1 , wherein the performance driver processes incoming packets from the terminal PC and outgoing packets to the terminal PC to simulate one or more GSM/UMTS network behaviors.

6. The emulation system of claim 1 , wherein the terminal PC runs an operating system that supports mobile communications.

7. The emulation system of claim 1 , further comprising an application server.

8. The emulation system of claim 7 , wherein the application server is at least one of a video server, a web server, and a dial-up server.

9. An emulation system for emulating a wireless communication network including a mobile phone and a mobile terminal coupled via a wireless link, the emulation system comprising:

a terminal PC that emulates the mobile phone; and

a server coupled to the terminal PC via a local link, wherein the server emulates the mobile terminal and includes a performance driver that emulates:

behavior of the local link;

behavior of the wireless link; and

GSM/UMTS network performance, wherein the system supports IP data between the mobile terminal and a UMTS network through a point-to-point protocol.

10. The system of claim 9 , wherein the system supports the IP data through an NDIS interface.

11. The system of claim 9 , wherein the system emulates a PPP connection mode having a protocol loop via the local link between the mobile terminal and the terminal PC.

12. The system of claim 9 , wherein the system emulates a PPP connection mode having a protocol loop via the wireless link between the terminal PC and a network server.

13. An emulation system for emulating a wireless communication network including a mobile phone and a mobile terminal coupled via a wireless link, the emulation system comprising:

a terminal PC that emulates the mobile phone, the terminal PC having a connection manager;

a server coupled to the terminal PC via a local area network, wherein the server includes a performance driver that emulates GSM/UMTS network performance;

an emulator coupled to the terminal PC and to the server via the local area network, wherein the emulator emulates the mobile terminal and includes an AT command manager,

a control channel over which AT commands between the connection manager and the AT command manager are transmitted, parsed, and operated so that the wireless network is emulated to the terminal PC; and

a virtual driver upon an Ethernet that provides a communication interface to an upper layer, wherein:

the control channel starts from the connection manager and ends at the AT command manager; and

the virtual driver encapsulates a PPP frame into an IP packet.