US 12,593,303 B2Granted

Positioning system and method

AssigneeBYD Company Limited

InventorsHongwen Wu, Longping Jiang, Chengxiong Huang, Kaikuo Zhuo

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Abstract

A positioning system includes a target device and multiple base stations connected with the target device. The multiple base stations include a master base station and multiple slave base stations that include a first slave base station and a second slave base station and are serially connected based on a synchronization order. The master base station is connected with the first slave base station. The master base station transmits a first positioning information to the target device and transmits a synchronization message to the multiple slave base stations based on the synchronization order. Each of the slave base stations transmits a second positioning information to the target device. The target device obtains location information of the target device based on an inter-station delay, a base station location, a first time receiving the first positioning information, and a second time receiving the second positioning information.

Claims14

Dependent claims

A positioning system, comprising a target device and a plurality of base stations, the base stations comprising a master base station and a plurality of slave base stations, the slave base stations at least comprising a first slave base station and a second slave base station, the target device being connected with the master base station and the slave base stations, the master base station being connected with the first slave base station, the slave base stations being serially connected based on a synchronization order, in which the slave base stations successively receive a synchronization message, wherein:

the master base station is configured to transmit first positioning information to the target device, and to transmit a first synchronization message to the first slave base station;
the first slave base station is configured to receive the first synchronization message transmitted by the master base station, to transmit second positioning information to the target device based on the first synchronization message, and to forward the first synchronization message to the second slave base station;
the second slave base station is configured to receive the first synchronization message forwarded by the first slave base station, and to transmit the second positioning information to the target device based on the first synchronization message;
and
the target device is configured to obtain a first time when the first positioning information is received, and a second time when one of the second positioning information is received;
and to obtain target location information of the target device based on an inter-station delay, base station location information, the first time, and the second time;
wherein the inter-station delay represents a time difference between two base stations of the base stations transmitting pieces of positioning information to the target device, and the base station location information includes base station location information of each of the base stations.

4 more elements

A positioning method, applicable to a positioning system, the positioning system comprising a target device and a plurality of base stations, the base stations comprising a master base station and a plurality of slave base stations, the slave base stations at least comprising a first slave base station and a second slave base station, the target device being connected with the master base station and the slave base stations, the master base station being connected with the first slave base station, the slave base stations being serially connected based on a synchronization order in which the slave base stations successively receive a synchronization message;

and the method comprising:
transmitting, by the master base station, first positioning information to the target device, and transmitting a first synchronization message to the first slave base station;
receiving, by the first slave base station, the first synchronization message transmitted by the master base station, transmitting second positioning information to the target device based on the first synchronization message, and forwarding the first synchronization message to the second slave base station;
receiving, by the second slave base station, the first synchronization message forwarded by the first slave base station, and transmitting the second positioning information to the target device based on the first synchronization message;
obtaining, by the target device, a first time when the first positioning information is received, and a second time when one of the second positioning information is received;
and
obtaining, by the target device, target location information of the target device based on an inter-station delay, base station location information, the first time, and the second time, wherein the inter-station delay represents a time difference between two base stations of the base stations transmitting pieces of positioning information to the target device, and the base station location information comprises base station location information of each of the base stations.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/526,234Filed 1 Dec 2023 · continuation
Priority: CN 202110874709.430 Jul 2021
Published: US 2024/0098681 A121 Mar 2024
Granted: 31 Mar 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

H04W 64/00
Locating users or terminals or network equipment for network management purposes
H04W 4/02
Services specially adapted for wireless communication networks; Facilities therefor: services making use of location information
H04W 56/00
Synchronisation arrangements
H04W
Wireless communication networks