发明名称 |
NETWORK SYSTEM, NODE, PACKET FORWARDING METHOD, PROGRAM, AND RECORDING MEDIUM |
摘要 |
There are proposed: a network system capable of realizing packet forwarding higher in packet forwarding efficiency than in conventional Intermittent Periodic Transmit (IPT) using omni-directional antennas; and the like. Directional antennas are applied to the IPT, and each of slave nodes waits for reception of downlink packets by a directional antenna for receiving the downlink packets in a reception waiting state therefor. Moreover, the downlink packets are treated like polling control signals, and uplink packets are transmitted at a reception time of the downlink packets, whereby a hidden node problem and a carrier sensing problem can be avoided. Furthermore, in accordance with routing protocol in which each of nodes changes directivity randomly by a route formation process, it becomes possible to form a more suitable route. |
申请公布号 |
EP2268083(A4) |
申请公布日期 |
2011.04.06 |
申请号 |
EP20090727887 |
申请日期 |
2009.03.30 |
申请人 |
KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION |
发明人 |
FURUKAWA, HIROSHI;MITSUNAGA, KEI |
分类号 |
H04W40/06;H04W40/00;H04W40/22 |
主分类号 |
H04W40/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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