Packet Data Service Example Procedure (via Mobile IP)
Last updated: September 1, 2009
This section is only applicable to the lab application.
The following procedure is an example of how to use the test set and an external PDSN simulator (MOB-IP-SIM) using Mobile IP protocol for IP packet data transfer. In this case, the test set will forward the PPP octets delivered by RLP data to the external MOB-IP-SIM. The MOB-IP-SIM is responsible for actual termination of the PPP link and interpreting all protocol layers necessary to pass the end-to-end encapsulated IP packets directly onto the network (IP, UDP, MIP).
This procedure will demonstrate how to access the MOB-IP-SIM built-in web site via the RF interface using a 1xEV-DO wireless device (such as an access terminal) as a wireless modem. The access terminal will be connected to the USB port on a laptop computer (PC) running USB port software developed by the manufacturer of the access terminal. The Wireless Protocol Advisor (WPA) can be used for logging the protocol messages during the packet data transfer. See
Test Set's Mobile IP Solution Setup
for a typical setup.
If you want to use the test set's internal PDSN simulation without the need of an external PDSN simulator for packet data transfer, see
Packet Data Service Example Procedure (via Simple IP)
.
The purpose of this procedure is to serve as an overview of the tasks required for a typical data channel application using the mobile IP protocol. If your particular application involves accessing internet or intranet sites via the MOB-IP-SIM's LAN interface, additional requirements such as getting through corporate firewalls may complicate setup procedures.
A. Pre-Setup
-
Ensure the access terminal is pre-programmed with known parameters (such as home IP address).
-
Refer to the MOB-IP-SIM technical manual to properly configure the MOB-IP-SIM (for example, IP address, subnet mask, etc.).
-
Set up the PC using wireless modem (access terminal) for dial-up connection (see
A. PC Setup
).
B. Hardware Connection
Refer to the
Test Set's Mobile IP Solution Setup
for a typical connection.
-
Connect the access terminal (support of mobile IP protocol) to the test set's front panel RF IN/OUT connector.
-
Connect the access terminal to the USB port on a laptop computer (PC) running a web browser (for example, internet explorer).
-
Connect the LAN PORT, the LAN 2 PORT of test set and the MOB-IP-SIM to a LAN.
-
(Optional) If you want to log the protocol messages during the packet data connection, connect an PC running the Wireless Protocol Advisor (WPA) to the LAN. This PC is also used to configure the MOB-IP-SIM.
C. Test Set Configuration
-
Set up the test set's LAN IP address. See step 1 described in
C. Test Set Setup
.
-
Set up call parameters required for an open session for the packet data connection. See step 2 described in
C. Test Set Setup
.
-
Set up data channel parameters required to use the external PDSN (MOB-IP-SIM) for the packet data connection (see
How Do I Set Up Data Channel Parameters?
for a general procedure).
-
Select the
Data Channel Info
(
F2
on Call Control 3 of 3).
-
Select the
Data Channel Parameters
(
F1
).
-
Set the
External PDSN IP Address
to match the MOB-IP-SIM's IP address you've set in
A. Pre-Setup
.
-
Set the
External PDSN TCP Port
to the default value (currently, the TCP port for the MOB_IP_SIM is fixed to 53613)
-
Set the
External PDSN State
to
On
. (Indicating the external PDSN is used. You should properly set the
External PDSN IP Address
and the
External PDSN TCP Port
and then turn the
External PDSN State
to
On
.)
-
Press
F6
(
Close Menu
).
In this example, the home IP Address of your access terminal is obtained from the external PDSN (MOB-SIM-IP) instead of from the test set's DUT IP Address setting. Refer to the MOB-IP-SIM technical manual to properly configure the Home Node IP address for your access terminal.
-
Now, the test set setup are ready for a dial-up connection from the PC.
D. Functional Test
In order to test the functioning of the wireless modem, it must first complete a dial-up connection between the test set and the PC.
-
Follow the steps 1 - 4 described in
D. Functional Test
to make a a dial-up connection from the PC.
-
Verify that a connection is active by looking for Connected shown in the Active Cell field on the bottom center portion of the test set's screen. Now, you are ready for the demonstration to continue.
-
To access the MOB-IP-SIM built-in web site, open the web browser (for example, Internet Explorer) on your laptop and enter the MOB-IP-SIM's IP address (for example, http://130.29.181.1). The browser should display the MOB-IP-SIM's internal web home page:
-
You can click on the links to view the desired information. As data is transferred, monitor the Data Counters (see
Data Counters
), or the Data Throughput Monitor window (see
Data Throughput Monitor
) from the test set. These tools are useful for analyzing data transfer throughout. To evaluate the effects of the RF degradation on the data rate, you can adjust the Cell power or add an AWGN (Additive White Gaussian Noise) power. The data rate changes can be easily identified from the
Traffic Channel Packet Information
screen.
-
You can also use the Wireless Protocol Advisor (WPA) to log 1xEV-DO SLP (Signaling Link Protocol) and RLP (Radio Link Protocol), as well as PPP (Point-to-Point Protocol) and IP (Internet Protocol) packets for protocol analysis. See
Protocol Logging
.
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