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XORs in the Air: Practical Wireless Network Coding
Abstract
This paper proposes COPE, a new architecture for wireless mesh networks. In addition to forwarding packets, routers mix (i.e., code) packets from different sources to increase the information content of each transmission. We show that intelligently mixing packets increases network throughput. Our design is rooted in the theory of network coding. Prior work on network coding is mainly theoretical and focuses on multicast traffic. This paper aims to bridge theory with practice; it addresses the common case of unicast traffic, dynamic and potentially bursty flows, and practical issues facing the integration of network coding in the current network stack. We evaluate our design on a 20-node wireless network, and discuss the results of the first testbed deployment of wireless network coding. The results show that using COPE at the forwarding layer, without modifying routing and higher layers, increases network throughput. The gains vary from a few percent to several folds depending on the traffic pattern, congestion level, and transport protocol.
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Cited by
Trading structure for randomness in wireless opportunistic routing
Chachulski, S., Jennings, M., Katti, S., & Katabi, D. (2007) · Proceedings of the 2007 conference on Applications, technologies, architectures, and protocols for computer communications · doi:10.1145/1282380.1282400 · Cited by 1,082
Self-citationOn the Index Coding Problem and Its Relation to Network Coding and Matroid Theory
El Rouayheb, S., Sprintson, A., & Georghiades, C. (2010) · IEEE Transactions on Information Theory · doi:10.1109/tit.2010.2048502 · Cited by 293
Over-the-Air Computation for IoT Networks: Computing Multiple Functions With Antenna Arrays
Chen, L., Zhao, N., Chen, Y., Yu, F. R., & Wei, G. (2018) · IEEE Internet of Things Journal · doi:10.1109/jiot.2018.2843321 · Cited by 136
Metadata
- Authors
- Katti, S., Rahul, H., Hu, W., Katabi, D., Medard, M., & Crowcroft, J.
- Venue
- IEEE/ACM Transactions on Networking
- Published
- 2008-06
- Volume
- 16
- Issue
- 3
- Pages
- 497-510
- ISSN
- 1063-6692 (ISSN-L)
- 1558-2566
- OpenAlex
- W2149863032
- Cited by
- 2,252
- References
- 0
- FWCI
- 420.29
- Type
- journal article
- Language
- en
- Open access
- closed
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- Katti, S., Rahul, H., Hu, W., Katabi, D., Medard, M., & Crowcroft, J. (2008). XORs in the Air: Practical Wireless Network Coding. IEEE/ACM Transactions on Networking. https://doi.org/10.1109/tnet.2008.923722
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