Chapter 3. Nomadicity
Rather than focusing on keeping sessions alive, nomadicity is about being able to use the Internet and its services, regardless of location and time. The biggest challenge in gaining ubiquitous access is to be able to use networks and services that are not controlled by the operator that the user has a subscription with. This chapter explains the key concepts that make it possible for users and devices to gain access to IP networks and IP-based applications that are offered by others than their own operator. Nomadic or roaming use of the Internet refers to a usage pattern in which network connectivity is not available (or used) on a permanent basis, but rather intermittently and opportunistically. In other words, no session ...
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