Flexible and dynamic network coding for adaptive data transmission in DTNs
Existing network coding approaches for Delay-Tolerant Networks (DTNs) do not detect and adapt to congestion in the network. In this paper we describe CafNC (Congestion aware forwarding with Network Coding) that combines adaptive network coding and adaptive forwarding in DTNs. In CafNC each node lea...
| Main Authors: | , |
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| Format: | Conference or Workshop Item |
| Published: |
2012
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| Online Access: | https://eprints.nottingham.ac.uk/34029/ |
| _version_ | 1848794758820921344 |
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| author | Radenkovic, Milena Zakhary, Sameh |
| author_facet | Radenkovic, Milena Zakhary, Sameh |
| author_sort | Radenkovic, Milena |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Existing network coding approaches for Delay-Tolerant Networks (DTNs) do not detect and adapt to congestion in the network. In this paper we describe CafNC (Congestion aware forwarding with Network Coding) that combines adaptive network coding and adaptive forwarding in DTNs. In CafNC each node learns the status of its neighbours, and their egonetworks in order to detect coding opportunities, and codes as long as the recipients can decode. Our flexible design allows CafNC to efficiently support multiple unicast flows, with dynamic traffic demands and dynamic senders and receivers. We evaluate CafNC with two real connectivity traces and a realistic P2P application, introducing congestion by increasing the number of unicast flows in the network. Our results show that CafNC improves the success ratio, delay and packet loss, as the number of flows grows in comparison to no coding and hub-based static coding, while at the same time achieving efficient utilisation of network resources. We also show that static coding misses a number of coding opportunities and increases packet loss rates at times of increased congestion. |
| first_indexed | 2025-11-14T19:21:17Z |
| format | Conference or Workshop Item |
| id | nottingham-34029 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:21:17Z |
| publishDate | 2012 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-340292020-05-04T16:33:41Z https://eprints.nottingham.ac.uk/34029/ Flexible and dynamic network coding for adaptive data transmission in DTNs Radenkovic, Milena Zakhary, Sameh Existing network coding approaches for Delay-Tolerant Networks (DTNs) do not detect and adapt to congestion in the network. In this paper we describe CafNC (Congestion aware forwarding with Network Coding) that combines adaptive network coding and adaptive forwarding in DTNs. In CafNC each node learns the status of its neighbours, and their egonetworks in order to detect coding opportunities, and codes as long as the recipients can decode. Our flexible design allows CafNC to efficiently support multiple unicast flows, with dynamic traffic demands and dynamic senders and receivers. We evaluate CafNC with two real connectivity traces and a realistic P2P application, introducing congestion by increasing the number of unicast flows in the network. Our results show that CafNC improves the success ratio, delay and packet loss, as the number of flows grows in comparison to no coding and hub-based static coding, while at the same time achieving efficient utilisation of network resources. We also show that static coding misses a number of coding opportunities and increases packet loss rates at times of increased congestion. 2012-08-31 Conference or Workshop Item PeerReviewed Radenkovic, Milena and Zakhary, Sameh (2012) Flexible and dynamic network coding for adaptive data transmission in DTNs. In: IWCMC 2012 : the 8th International Wireless Communications & Mobile Computing Conference, 27-31 August 2012, Limassol, Cyprus. http://dx.doi.org/10.1109/IWCMC.2012.6314266 10.1109/IWCMC.2012.6314266 10.1109/IWCMC.2012.6314266 10.1109/IWCMC.2012.6314266 |
| spellingShingle | Radenkovic, Milena Zakhary, Sameh Flexible and dynamic network coding for adaptive data transmission in DTNs |
| title | Flexible and dynamic network coding for adaptive data transmission in DTNs |
| title_full | Flexible and dynamic network coding for adaptive data transmission in DTNs |
| title_fullStr | Flexible and dynamic network coding for adaptive data transmission in DTNs |
| title_full_unstemmed | Flexible and dynamic network coding for adaptive data transmission in DTNs |
| title_short | Flexible and dynamic network coding for adaptive data transmission in DTNs |
| title_sort | flexible and dynamic network coding for adaptive data transmission in dtns |
| url | https://eprints.nottingham.ac.uk/34029/ https://eprints.nottingham.ac.uk/34029/ https://eprints.nottingham.ac.uk/34029/ |