Title | ||
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FEC-based AP downlink transmission schemes for multiple flows: Combining the reliability and throughput enhancement of intra- and inter-flow coding |
Abstract | ||
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We consider downlink access point (AP) networks and the corresponding reliable transmission schemes. It is well known that one can protect the network traffic against packet erasures by forward-error-correcting-codes (FEC). In addition to ensuring reliable delivery, FECs could substantially reduce the amount of feedback traffic, which is critical when designing high-performance AP protocols. In this work, we generalize the FEC-based schemes, also known as intra-flow coding schemes, for multiple downlink flows. In contrast with the classic approach that performs FEC separately on individual flows, we propose a new protocol MU-FEC, which incorporates the recent idea of inter-flow coding to further enhance the achievable throughput. Specifically, MU-FEC guarantees 100% reliability, is oblivious and robust to the underlying erasure probabilities, has near-optimal throughput higher than any existing inter-flow coding protocols, and can be practically implemented on top of 802.11. The design of MU-FEC consists of three components: batch-based operations, a systematic phase-based network coding decision policy, and smooth integration of inter-flow and intra-flow coding. We analytically show that MU-FEC can achieve much higher throughput than intra- or inter-flow coding alone, and validate its performance gain via extensive simulations. To our knowledge, MU-FEC is the first practical protocol that leverages both intra-flow and inter-flow network coding to solve a real-world problem in single-hop wireless networks. |
Year | DOI | Venue |
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2011 | 10.1016/j.peva.2011.07.021 | Perform. Eval. |
Keywords | Field | DocType |
mu-fec guarantee,single-hop wireless network,multiple flow,throughput enhancement,intra-flow coding,higher throughput,network traffic,existing inter-flow,intra-flow coding scheme,inter-flow coding,near-optimal throughput,inter-flow network,fec-based ap downlink transmission,achievable throughput,network coding,wireless network,forward error correction | Linear network coding,Wireless network,Computer science,Flow (psychology),Network packet,Computer network,Real-time computing,Coding (social sciences),Throughput,Telecommunications link,Distributed computing,Erasure | Journal |
Volume | Issue | ISSN |
68 | 11 | 0166-5316 |
Citations | PageRank | References |
10 | 0.80 | 12 |
Authors | ||
4 |
Name | Order | Citations | PageRank |
---|---|---|---|
Chih-Chun Wang | 1 | 795 | 55.20 |
Dimitrios Koutsonikolas | 2 | 746 | 53.88 |
Y. Charlie Hu | 3 | 3357 | 181.75 |
N. B. Shroff | 4 | 6994 | 519.23 |