| Presentation | 2007-03-08 Improvement of the Capacity of Wireless Networks by Optimizing Communication Distance Hiroshi TOKITO, Masahiro SASABE, Hirotaka NAKANO, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | As the number of nodes increases, the capacity of ad-hoc wireless networks is constrained by radio interference. Especially, when a source node cannot directly communicate with its destination node, every packet has to travel through one or more relay nodes. The throughput decreases as the number of relayed hop count increases. To effectively use the limited radio resources, we propose a scheme that a node avoids radio interference among its adjacent nodes by appropriately controlling its transmission power. In this case, the capacity is expected to quite improve when each node sets distance to physical distance to the next hop. However, this may be difficult to realize in practical environments. In this paper, through analysis and simulation experiments, we examine the optimal communication distance to maximize the network capacity when all nodes take the same communication distance. Results showed that the communication distance to maximize the network capacity depends on the node density. We further showed that the network capacity is independent of the node density. In addition, the proposed scheme could improve the network capacity up to 2.1 times higher than the traditional scheme. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | wireless network / network capacity / radio interference / transmission power control |
| Paper # | IN2006-196 |
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| Conference Information | |
| Committee | IN |
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| Conference Date | 2007/3/1(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Information Networks (IN) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Improvement of the Capacity of Wireless Networks by Optimizing Communication Distance |
| Sub Title (in English) | |
| Keyword(1) | wireless network |
| Keyword(2) | network capacity |
| Keyword(3) | radio interference |
| Keyword(4) | transmission power control |
| 1st Author's Name | Hiroshi TOKITO |
| 1st Author's Affiliation | School of Engineering Science, Osaka University() |
| 2nd Author's Name | Masahiro SASABE |
| 2nd Author's Affiliation | Cybermedia Center, Osaka University |
| 3rd Author's Name | Hirotaka NAKANO |
| 3rd Author's Affiliation | Cybermedia Center, Osaka University |
| Date | 2007-03-08 |
| Paper # | IN2006-196 |
| Volume (vol) | vol.106 |
| Number (no) | 578 |
| Page | pp.pp.- |
| #Pages | 6 |
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