Internet protocol header compression, robust header compression, and their applicability in the global information grid

Error-resilient packet header compression

“…To summarize, there is one small-scale FSM (Finite State Machine) describing the operation of the compression algorithm, while there is (another) large-scale FSM driving the movement between different modes. The interested reader is referred to [12], [13] for a more detailed treatment of these subjects.…”

Optimization of low-efficiency traffic in OpenFlow Software Defined Networks

“…However, our proposal does not formally use header compression techniques [3], but it only removes NOCHANGE fields. The compression of DELTA fields is not considered, since it would only provide a marginal increase of the savings, at the cost of the appearance of compressed headers with a variable size, the processing required for the compression and decompression of these fields, and the potential context desynchronization.…”

“…Header compression techniques able to save bandwidth for long-term flows using small packets through the public Internet were developed long ago [3]. They are based on the fact that many header fields are the same for every packet in a flow (NOCHANGE fields).…”

“…In addition, the most recent header compression techniques [4] provide a more robust synchronization between the sender and the receiver, including a set of advanced features that imply a higher computation cost [3].…”

“…In this context, the contribution of the present paper is the proposal of an optimization method for providing significant bandwidth savings in an Openflow-based SDN, with three main advantages: i) the tunneling layer is not necessary, since the SDN provides it in a natural way; ii) the avoidance of the use of standard header compression techniques [3] which require a context synchronization between the sender and the receiver; and iii) multiplexing reduces the number of frames, so a number of Ethernet fields (header, inter-frame gap) are only sent once instead of being required for each packet. Four kinds of small-packet traffic flows will be considered (VoIP, UDP and TCP-based online games, and ACKs from TCP flows).…”