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Using data of passenger numbers and train schedules from the London Underground metropolitan railway system, the authors compare a Tunneling-based to a Naming-based approach for supporting mobile networks. They show that, in terms of packet overhead, a naming based approach may have similar performance overhead to a tunneling approach, and so may offer a viable alternative, whilst also offering other benefits. Whilst considerations for mobility were made as early as the late 1970's (e.g. IEN1 and IEN19), the current Internet Protocols (IPv4 and IPv6) were not designed to support mobility in their core functionality.
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