Rohde&Schwarz Cmu200 E5071c E5071b Mobile Phone Comprehensive Tester

• Customization: Available
• After-sales Service: Provide
• Warranty: 1 Year
• Model NO.: CMU200
• Specification: 40
• Trademark: R&S
• Origin: Germany

Product Description

Product Description

 

The R&S® CMU200 packet data testing application provides a turnkey solution for the user to test end-to-end data applications using the CDMA2000 1xEV-DO Default Packet Application. The R&S® CMU200 receives the data via an Ethernet interface, transforms the data into PPP packets and sends the packets to the mobile unit over the Radio Link Protocol. The R&S® CMU200 supports both Mobile IP and Simple IP data connections. All necessary functionality needed to perform end-to-end data testing is provided by the R&S® CMU200; no external equipment is required other than the server running the data application. The R&S® CMU200 performs the PPP link establishment, PPP Authentication (for Simple IP connections) and Mobile IP registration / authentication. The R&S® CMU200 unit also includes a FTP server and the PING application. These internal applications can be used to test end-to-end data transfers without connecting to an external data server.

CDMA2000 1xEV-DO Default Packet Application Overview The Default Packet Application (DPA) is part of the 1xEV-DO Application Layer and is used for transporting user data between the Access Terminal and the Access Network. This application is made up of three separate protocols. The Radio Link Protocol provides retransmission and duplicate detection for an octet data stream, the Location Update Protocol defines the procedures which support mobility management and the Flow Control Protocol defines the flow control procedures to enable and disable packet flow. A PPP connection is established between the CMU200 (AN) and the AT andd is used to transmit IP datagrams over serial point to point links. See Figure 3 below.

Network Controlled PPP Establishment and Release In a CDMA2000 1XEV-DO packet data environment, the network has the ability to automatically transition the AT from PPP Dormant to PPP Connected if there is data to transmit to the AT. The network also has the ability to transition the AT from PPP Connected to PPP Dormant if data is not being transmitted to the mobile after a specified period of time. This functionality is controlled by a parameter called AN PPP Inactivity Timer. If the timer is non-zero, the R&S® CMU200 will transition the call from PPP Connected to PPP Dormant if no AT directed data has been received for a period of AN PPP Inactivity Timer seconds. The R&S® CMU200 will transition the AT from PPP Dormant to PPP Connected once AT directed data is received. The automatic transitioning from PPP Dormant to PPP Connected is disabled if the AN PPP Inactivity Timer is set to "OFF".

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