Last updated: February 10, 2009
This section is only applicable to the lab application.
The IS-2000 network using SO33 (see Packet Data Service Configurations ) for high speed packet data transmission supports connections to the public network or a private network using either mobile IP or simple IP protocol.
A packet data session begins when the user invokes packet data service. A packet data session ends when the user or the network terminates packet data service. During a particular packet data session, the user may change locations (point of attachment).
The test set supports simple IP protocol with it's internal PDSN simulation (see Test Set Packet Data Network Emulation and Packet Data Service Example Procedure (via Simple IP) ).
The test set provides two ways to support mobile IP protocol tests required to ensure compliance with the TIA/EIA-IS-835 standard. One way is by working together with an external PDSN (MOB-IP-SIM) provided by the Software Concepts, Inc. The other way is a simple way just to use Mobile IP Support in the test set.
By working together with an external PDSN (MOB-IP-SIM), the mobile IP protocol stack is implemented in the MOB-IP-SIM. For details on the MOB-IP-SIM functionality and configurations, see the MOB-IP-SIM technical manual available on the web:
http://www.softwareconceptsinc.net/MIP-5850.html
A typical connection diagram for a mobile IP solution is shown in Configuration for a Mobile IP Solution . An example procedure for establishing a packet data connection over Mobile IP is described in Packet Data Service Example Procedure (via Mobile IP) .
The External PDSN State is used to specify whether the PDSN simulation for packet data service is provided by the test set or by the external application (MOB-IP-SIM).
Off
, the mobile station's PPP connection is terminated by the test set, propagating the encapsulated IP packets directly to the ethernet interface (LAN port).
On
, the test set will forward the PPP octets delivered by RLP data to the external application (MOB-IP-SIM), which 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). See
Packet Data Service Example Procedure (via Mobile IP)
for an example setup.
On
the test set will extract the IP packets from the PPP octets so they can be logged using the Wireless Protocol Adviser (WPA).The test set also provides Mobile IP support without any external devices. Its work model can be described as follows. The test set processes the reverse Mobile IP related messages (MIP Agent Solicitation, MIP Registration Request) from Mobile Station and generate corresponding forward Mobile IP messages (MIP Agent Advertisement, MIP Registration Reply) to Mobile Station in order to pass the Mobile IP negotiation. After the Mobile IP negotiation, the DUT IP Address is assigned as Home Address to the DUT and the DUT use this IP address to do IP packet data transferring. For most of the Mobile IP related parameters in the forward Mobile IP messages, the test set uses either the fixed settings in the test set or the related parameter values gotten from the corresponding reverse Mobile IP messages.
Here the packet data service means an SO33 call.
When
External PDSN State
is
Off
,
Internal Mobile IP State
has effect. Switch the
Internal Mobile IP State
to
On
, the test set works in Mobile IP mode, in which
Home Agent Shared Secret (Hex)
must be consistent with the value configured in the DUT, otherwise, Mobile IP negotiation will fail. Switch the
Internal Mobile IP State
to Off, the test set works in Simple IP mode.
When
External PDSN State
is
,
Internal Mobile IP State
has no effect. In this case, the simulation of data network is provided by MOB-IP-SIM instead of the test set.
On
Compared with a DUT working with MOB-IP-SIM, the performance of data throughput between the test set and a DUT configured using Mobile IP can be greatly improved. This difference can be observable in Data Throughput Monitor measurement.
Packet Data Service Example Procedure (via Mobile IP)
Packet Data Service Example Procedure (via Simple IP)