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Systems and methods for precise radio frequency localization in the presence of multiple communication paths

專利號(hào)
US12108362B2
公開日期
2024-10-01
申請(qǐng)人
ZaiNar, Inc(US CA Redwood City)
發(fā)明人
Manu Seth; Lingkai Kong; Tommi Ylamurto; Vivek Subramanian
IPC分類
H04W64/00; G01S5/02; H04L41/12; H04L43/0864; H04L45/121; H04L45/122; H04L47/283; H04W28/02
技術(shù)領(lǐng)域
wireless,hub,nodes,rf,node,in,network,flight,circuitry,sensor
地域: CA CA Redwood City

摘要

Systems and methods for determining locations of wireless nodes in a network architecture are disclosed herein. In one example, an asynchronous system includes a first wireless node having a wireless device with one or more processing units and RF circuitry for transmitting and receiving communications in the wireless network architecture including a first RF signal having a first packet. The system also includes a second wireless node having a wireless device with a transmitter and a receiver to enable bi-directional communications with the first wireless node in the wireless network architecture including a second RF signal with a second packet. The first wireless node determines a time of flight estimate for localization based on a time estimate of round trip time of the first and second packets and a time estimate that is based on channel sense information of the first and second wireless nodes.

說(shuō)明書

At operation 1202, the hub having radio frequency (RF) circuitry and at least one antenna transmits communications to a plurality of sensor nodes in the wireless network architecture (e.g., wireless asymmetric network architecture). At operation 1203, the RF circuitry and at least one antenna of the hub receives communications from the plurality of sensor nodes each having a wireless device with a transmitter and a receiver to enable bi-directional communications with the RF circuitry of the hub in the wireless network architecture. At operation 1205, processing logic of a hub having a wireless control device initially causes a wireless network of sensor nodes to be configured as a mesh-based network architecture for a time period (e.g., predetermined time period, time period sufficient for localization, etc.).

At operation 1206, the processing logic of the hub determines localization of at least two nodes (or all nodes) using at least one time of flight technique and possibly a signal strength technique as discussed in the various embodiments disclosed herein.

At operation 1208, upon localization of the at least two network sensor nodes being complete, the processing logic of the hub terminates time of flight measurements if any time of flight measurements are occurring and continues monitoring the signal strength of communications with the at least two nodes. Similarly, the at least two nodes may monitor the signal strength of communications with the hub. At operation 1210, the processing logic of the hub configures the wireless network in a tree based or tree-like network architecture (or tree architecture with no mesh-based features) upon completion of localization.

權(quán)利要求

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