| 摘要 |
PROBLEM TO BE SOLVED: To reduce the power consumption at a node by determining a communication path with good communication efficiency suitable for wireless communication even if an obstacle impeding the wireless communication is interposed in the communication path, to prevent respective nodes from having imbalance in power consumption, to solve problems of a break, an error of data, etc., when music data, moving picture data, etc., are reproduced in real time, and to preferentially and speedily transmit emergency data etc. SOLUTION: A communication path through which packet data etc., are transmitted is determined on the basis of a communication evaluation value regarding communication performance calculated based upon communication capability such as a wireless communication speed between nodes, received electric field intensity of a wireless radio wave, the remaining electric energy of the nodes, or position information on the nodes. Further, a communication path corresponding to the kind of data is determined. Furthermore, relaying nodes constituting an existent communication path are forcibly or optionally released and a new communication path using the released relaying nodes is determined. COPYRIGHT: (C)2006,JPO&NCIPI |
