Abstract
An important challenge for the implementation of network coding in IEEE 802.11-based wireless networks is to give additional priority for channel access to the relay stations responsible for coding. These relay stations are able to provide more information in a single transmission than those that forward single packets, hence improving throughput and energy efficiency. The Distributed Coordination Function (DCF) of the IEEE 802.11 standard is a contention-based Medium Access Control (MAC) protocol that provides an equal distribution of channel access opportunities for all competing stations. However, the relay station represents a congestion point and additional transmission slots should be assigned to it to increase the overall network performance. To address this issue we investigate a coding-aware MAC protocol, called Reverse Direction DCF (RD-DCF), which enables bidirectional communications between the relay station and another station with a single channel access invocation. This simple and backwards compatible mechanism allows the relay station to transmit a coded packet together with the acknowledgement immediately after receiving a data packet. The simulation results show a gain of up to 130% in terms of both throughput and energy efficiency for RD-DCF with network coding when compared to DCF.
Original language | English |
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Title of host publication | 2014 IEEE International Conference on Communications, ICC 2014 |
Number of pages | 6 |
Publisher | IEEE Computer Society Press |
Publication date | 1 Jan 2014 |
Pages | 1272-1277 |
Article number | 6883496 |
ISBN (Print) | 978-1-4799-2003-7 |
DOIs | |
Publication status | Published - 1 Jan 2014 |
Event | 2014 IEEE International Conference on Communications - Sydney , Australia Duration: 10 Jun 2014 → 14 Jun 2014 Conference number: 31675 |
Conference
Conference | 2014 IEEE International Conference on Communications |
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Number | 31675 |
Country/Territory | Australia |
City | Sydney |
Period | 10/06/2014 → 14/06/2014 |
Series | IEEE International Conference on Communications |
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ISSN | 1938-1883 |