User's Manual

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Technology Overview

Revision 0.2

1. After registration with the network, the user activates a

PDP Context using an application on the computer or

Terminal, and requests sufficient radio resources (that is,

power and bandwidth) to support the context activation

procedure.

2. Once the resources are allocated, the Terminal sends the

Activate PDP Context request to the Core Network. This

request includes key information about the mobile user's

PDP address (for example an IP address), PDP type (that

is, static or dynamic address) the QoS requested for this

context, the APN of the external network to which

connectivity is requested, the user's identity (IMSI) and

any necessary IP configuration parameters (for example,

security settings).

3. On receiving the Activate PDP Context message, the Core

Network checks the user's subscription record to establish

whether the request is valid. If the request is valid, a

virtual connection is established between the Terminal and

the Core Network, and data transfer can then take place

between the Terminal and the external data network,

within the scope of the current PDP Context. The PDP

Context is stored in both the Terminal and the Core

Network.

A single Terminal may have multiple PDP Contexts each with

different QoS profiles. The primary PDP Context is a PDP

Context with default QoS profile attributes and is always

activated first. All other PDP Contexts with the same PDP

Address are secondary PDP Contexts. Secondary PDP Contexts

share the same PDP Address and connect to the same APN but

may have different QoS profiles.