| Presentation | 2009-11-27 Network Coding-Based Reliable Multicast Scheme in Wireless Networks Zhiqiang Zhang, Kaikai Chi, Xiaohong Jiang, Michitaka Kameyama, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Recently, network coding has been applied to the loss recovery of reliable multicast in wireless networks to achieve a significant reduction of bandwidth consumption. In these network-coding-based multicast schemes, once one receiver receives one packet from the source it will send an ACK to acknowledge the receiving of this packet. Such acknowledgment mechanism has the following limitation: when an ACK from one receiver is lost, the source considers the corresponding data packet to be lost at this receiver and then conducts unnecessary retransmission. Motivated by this basic observation, in this paper, we first propose a block-based acknowledgment mechanism. In this mechanism, rather than acknowledging one single packet, each ACK acknowledges all previously received packets of the current block such that the unnecessary retransmissions are greatly reduced. Then we further propose another block-based acknowledgment mechanism where the source starts to send acknowledgment from the last but one (rather than the first one) packet, such that the amount of feedback is greatly reduced. Simulation results demonstrate that, compared to the current acknowledgment mechanism in network-coding-based reliable multicast schemes, these two mechanisms can achieve much higher bandwidth efficiency. The former one can achieve better performance over the latter one in the wireless networks without long deep fade, while the second one can outperform the first one in the wireless networks with intermittent long deep fades. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Wireless networks / Network coding / Reliable multicast / Acknowledgement mechanism |
| Paper # | RCS2009-161 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2009/11/19(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Radio Communication Systems (RCS) |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Network Coding-Based Reliable Multicast Scheme in Wireless Networks |
| Sub Title (in English) | |
| Keyword(1) | Wireless networks |
| Keyword(2) | Network coding |
| Keyword(3) | Reliable multicast |
| Keyword(4) | Acknowledgement mechanism |
| 1st Author's Name | Zhiqiang Zhang |
| 1st Author's Affiliation | Graduate School of Information Sciences, Tohoku University() |
| 2nd Author's Name | Kaikai Chi |
| 2nd Author's Affiliation | Graduate School of Information Sciences, Tohoku University |
| 3rd Author's Name | Xiaohong Jiang |
| 3rd Author's Affiliation | Graduate School of Information Sciences, Tohoku University |
| 4th Author's Name | Michitaka Kameyama |
| 4th Author's Affiliation | Graduate School of Information Sciences, Tohoku University |
| Date | 2009-11-27 |
| Paper # | RCS2009-161 |
| Volume (vol) | vol.109 |
| Number (no) | 305 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |