JakeHillion/dissertation-0-project-proposal
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project-proposal.tex
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\section*{Introduction and Description of the Work}
This project aims to provide a method of combining Internet connections without modifying existing devices or infrastructure. Rather, by inserting a Local Server to consolidate multiple, heterogeneous connections and a Remote Server to act as a common connection to the wider network, both speed and resilience improvements may be possible. While there are existing solutions that combine multiple connections, they prioritise one at the expense of the other; this project will attempt to show that this trade-off can be avoided.
This project attempts to combine multiple heterogeneous network connections into a single virtual connection, which has both the combined speed and the maximum resilience of the original connections. This will be achieved by inserting a Local Portal and a Remote Portal into the network path, as shown in Figure \ref{fig:sample-network}. While there are existing solutions that combine multiple connections, they prioritise one of resilience or speed over the other; this project will attempt to show that this trade-off can be avoided.
The resilience focus of this software should allow a TCP flow\footnote{Flow is used slightly outside of normal in this document. It describes a channel of communication between two devices that is uninterrupted.} or UDP flow to continue, given all but one of the connections between the Local Server and the Remote Server being lost. As an example, this would allow a SIP call to continue without a redial. The speed focus is achieved by providing a single virtual connection that aggregates the speed of all connections. An example of this is allowing a single flow video stream to exceed the bandwidth available on a single connection. Further, the system is integrated in such a way that the details of the load balancing are hidden from both the applications behind the Local Server and peers on the wider network.
The speed focus of this software is achieved by providing a single virtual connection which aggregates the speed of the individual connections. As this single connection is all that’s made visible to the client, all applications and protocols can benefit from the speed benefits, as they require no knowledge of how their packets are being split. As an example, a live video stream that only uses one flow will be able to use the full capacity of the virtual connection.
The resilience focus provides similar benefits, in that the virtual connection conceals the failing of a connection from the client and applications. This again means that applications and protocols not built to handle a network failover can benefit from the resilience provided by this solution. An example is a SIP call continuing without a redial.
This system is useful in areas where multiple low bandwidth connections are available, but not a single higher bandwidth connection. This is often the case in rural areas in the UK. It will also be useful in areas with diverse connections of varying reliability, such as a home with both DSL and wireless connections, which may become more common with the advent of 5G and LEO systems such as Starlink. The lack of requirement for vendor support allows for this mixture of connections to be supported.