发明名称 |
Determining method, computer product, determining apparatus, and determining system |
摘要 |
A determining method executed by a processor includes obtaining distance information that indicates a distance between monitoring apparatuses disposed to encompass a given area in which wireless communications apparatuses are scattered; causing a wireless signal to be transmitted and received between the monitoring apparatuses by multi-hop communication among the wireless communications apparatuses; calculating an estimated distance between the monitoring apparatuses, based on a hop count of the wireless signal multi-hop communicated among the monitoring apparatuses; and making a determination concerning a vacant area in which none of the wireless communications apparatuses is present, based on a result of comparison of the distance indicated by the obtained distance information and the calculated estimated distance. |
申请公布号 |
US9529073(B2) |
申请公布日期 |
2016.12.27 |
申请号 |
US201514619879 |
申请日期 |
2015.02.11 |
申请人 |
FUJITSU LIMITED |
发明人 |
Otomo Toshiya;Yamashita Koichiro;Suzuki Takahisa;Yamauchi Hiromasa;Kurihara Koji;Teranishi Yuta |
分类号 |
H04W4/02;G01S5/02;G01S11/02;H04W84/18;H04L12/733;H04W40/20 |
主分类号 |
H04W4/02 |
代理机构 |
Staas & Halsey LLP |
代理人 |
Staas & Halsey LLP |
主权项 |
1. A determining method executed by a processor, the determining method comprising:
obtaining distance information that indicates a distance between monitoring apparatuses disposed to encompass a given area in which wireless communications apparatuses are scattered; causing a wireless signal to be transmitted and received between the monitoring apparatuses by multi-hop communication among the wireless communications apparatuses; calculating an estimated distance between the monitoring apparatuses, based on a hop count of the wireless signal multi-hop communicated among the monitoring apparatuses; and making a determination concerning a vacant area in which none of the wireless communications apparatuses is present, based on a result of comparison of the distance indicated by the obtained distance information and the calculated estimated distance. |
地址 |
Kawasaki JP |