发明名称 |
System and method for determining signal source location in wireless local area network |
摘要 |
Systems and methods for determining signal source location in wireless local area networks are disclosed. An example method includes receiving, from a first signal reader, a first time-of-arrival measurement for a first radio frequency (RF) signal generated by a first wireless local area network (WLAN) signal source located at a first known location, the first time-of-arrival measurement being relative to a first clock of the first signal reader; receiving, from a second signal reader, a second time-of-arrival measurement for the RF signal, the second time-of-arrival measurement being relative to a second clock of the second signal reader, wherein the first clock is not synchronized with the second clock; defining a first time relationship between the first clock and a system time based on the first time-of-arrival measurement; and defining a second time relationship between the second clock and the system time based on the second time-of-arrival measurement. |
申请公布号 |
US9519046(B2) |
申请公布日期 |
2016.12.13 |
申请号 |
US201614989389 |
申请日期 |
2016.01.06 |
申请人 |
ZIH Corp. |
发明人 |
Boyd Robert W. |
分类号 |
H04W24/00;G01S5/06;G01S5/02;H04W64/00;H04W84/12 |
主分类号 |
H04W24/00 |
代理机构 |
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代理人 |
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主权项 |
1. A method, comprising:
receiving, from a first signal reader, a first time-of-arrival measurement for a first radio frequency (RF) signal generated by a first wireless local area network (WLAN) signal source located at a first known location, the first time-of-arrival measurement being relative to a first clock of the first signal reader; receiving, from a second signal reader, a second time-of-arrival measurement for the RF signal, the second time-of-arrival measurement being relative to a second clock of the second signal reader, wherein the first clock is not synchronized with the second clock; defining, via a processor, a first time relationship between the first clock and a system time based on the first time-of-arrival measurement; and defining, via the processor, a second time relationship between the second clock and the system time based on the second time-of-arrival measurement. |
地址 |
Lincolnshire IL US |