| 摘要 |
PROBLEM TO BE SOLVED: To provide a low-priced radio system available over a wide range in spite of simple configuration. SOLUTION: Mobile radio units (a), (b), (c) are positioned by utilizing a result of measuring the number of radio units to be bypassed until the mobile radio units reach a reference radio unit R1 by means of ad-hoc communication means. COPYRIGHT: (C)2007,JPO&INPIT
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