CN103095815B - Positioning of mobile equipment method and apparatus - Google Patents
Positioning of mobile equipment method and apparatus Download PDFInfo
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- CN103095815B CN103095815B CN201210593614.6A CN201210593614A CN103095815B CN 103095815 B CN103095815 B CN 103095815B CN 201210593614 A CN201210593614 A CN 201210593614A CN 103095815 B CN103095815 B CN 103095815B
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Abstract
The invention provides a kind of positioning of mobile equipment method and apparatus, wherein, method comprises: Surveillance center carries out group to pending multiple mobile devices and divides, road network information and the identification information of mobile device that often group comprises are sent at least one acquisition node by Surveillance center, and Surveillance center receives the current location information of the mobile device that acquisition node sends.Use the present invention can improve Surveillance center to the processing speed of the GPS locating information of magnanimity and accuracy, and then realize the particular location of display mobile device in real time.
Description
Technical field
The present invention relates to data processing technique, particularly relate to a kind of positioning of mobile equipment method and apparatus.
Background technology
Existing supervisory control system, primarily of mobile device terminal, wireless-transmission network and Surveillance center's composition, mobile device terminal is mounted with global positioning system (GlobalPositioningSystem, GPS), global positioning system is for gathering the locating information of mobile device, the locating information that wireless-transmission network is used for mobile device global positioning system collected reports Surveillance center, and Surveillance center, for analyzing the locating information of mobile device, obtains the more specific location information of mobile device.
In existing supervisory control system, Surveillance center needs to process the GPS locating information of a large amount of mobile devices obtained, and obtains the more specific location information of these mobile devices.
But, during Surveillance center's process mass GPS locating information, be difficult to process fast and accurately the GPS locating information of magnanimity, and then be difficult to the particular location showing mobile device in real time.
Summary of the invention
The invention provides a kind of positioning of mobile equipment method and apparatus, process fast and accurately for solving in prior art the GPS locating information be difficult to magnanimity, and then be difficult to the problem of the particular location showing mobile device in real time.
First aspect of the present invention is to provide a kind of positioning of mobile equipment method, comprising:
Surveillance center carries out group to pending multiple mobile devices and divides;
Road network information and the identification information of mobile device that often group comprises are sent at least one acquisition node by described Surveillance center, the locating information of corresponding mobile device is gathered according to described identification information to make described acquisition node, and the current location information of corresponding mobile device is determined according to described locating information and described road network information, described road network information comprises the road origin information of described Surveillance center monitoring, endpoint information and path locus information, described locating information at least comprises the identification information of mobile device, the longitude information of described mobile device and latitude information,
Described Surveillance center receives the current location information of the described mobile device that described acquisition node sends.
Another aspect of the present invention provides a kind of positioning of mobile equipment method, comprising:
Acquisition node receives the road network information of Surveillance center's transmission and the identification information of at least one mobile device, at least one mobile device described belongs to the same group of equipment that described Surveillance center divides, and described road network information comprises road origin information, endpoint information and the path locus information that described Surveillance center monitors;
Described acquisition node gathers the locating information of corresponding mobile device according to described identification information, and described locating information at least comprises the identification information of mobile device, the longitude information of described mobile device and latitude information;
Described acquisition node is according to the current location information of described locating information and described road network information determination mobile device;
The current location information of described mobile device is sent to Surveillance center by described acquisition node.
Another aspect of the present invention provides a kind of positioning device for mobile equipment, comprising:
Divide module, divide for carrying out group to pending multiple mobile devices;
Sending module, for road network information and the identification information of mobile device that often group comprises are sent at least one acquisition node, the locating information of corresponding mobile device is gathered according to described identification information to make described acquisition node, and the current location information of corresponding mobile device is determined according to described locating information and described road network information, described road network information comprises the road origin information of described Surveillance center monitoring, endpoint information and path locus information, described locating information at least comprises the identification information of mobile device, the longitude information of described mobile device and latitude information,
Receiver module, for receiving the current location information of the described mobile device that described acquisition node sends.
Another aspect of the invention provides a kind of positioning device for mobile equipment, comprising:
Receiver module, for receiving the road network information and the identification information of at least one mobile device that Surveillance center sends, at least one mobile device described belongs to the same group of equipment that described Surveillance center divides, and described road network information comprises road origin information, endpoint information and the path locus information that described Surveillance center monitors;
Acquisition module, for gathering the locating information of corresponding mobile device according to described identification information, described locating information at least comprises the identification information of mobile device, the longitude information of described mobile device and latitude information;
Determination module, for the current location information according to described locating information and described road network information determination mobile device;
Sending module, for sending to Surveillance center by the current location information of described mobile device.
The present invention carries out group by Surveillance center to pending multiple mobile devices and divides, road network information and the identification information of mobile device that often group comprises are sent at least one acquisition node, and receive the current location information of the described mobile device that acquisition node sends, improve Surveillance center to the processing speed of the GPS locating information of magnanimity and accuracy, and then realize the particular location of display mobile device in real time.
Accompanying drawing explanation
Fig. 1 is the flow chart of a positioning of mobile equipment method of the present invention embodiment;
Fig. 2 is the flow chart of another embodiment of positioning of mobile equipment method of the present invention;
Fig. 3 a is the structural representation that acquisition node searches the road of possible mobile device coupling;
Fig. 3 b is the structural representation that acquisition node searches the road of mobile device coupling;
Fig. 3 c is the structural representation of the current location of acquisition node determination mobile device;
Fig. 4 is the flow chart of another embodiment of positioning of mobile equipment method of the present invention;
Fig. 5 is the structural representation of a positioning of mobile equipment method of the present invention embodiment;
Fig. 6 is the structural representation of another embodiment of positioning of mobile equipment method of the present invention.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Fig. 1 is the flow chart of a positioning of mobile equipment method of the present invention embodiment, as shown in Figure 1, comprising:
101, Surveillance center carries out group division to pending multiple mobile devices.
Wherein, the overall area at multiple mobile device places of monitoring can be divided into multiple subregion according to the division methods preset by Surveillance center, each subregion at least one acquisition node corresponding, Surveillance center can obtain the historical position information before the current time of mobile device, determine the subregion belonging to mobile device, same subregional mobile device will be belonged to and be divided into one group.Pending mobile device mainly refers to needs to carry out the various vehicles monitored, as armoured van, express delivery vehicle and mail van etc.
Further, Surveillance center can by building mark, as gas station, adds power station etc. the overall area at multiple mobile device places of monitoring is divided into multiple subregion.Surveillance center also can divide by the overall area to multiple mobile device places of monitoring such as Dongcheng District, Xicheng District, Fengtai District, Chaoyang District.Surveillance center can also divide, as North 2nd Ring Road, North 3rd Ring Road, South 2nd Ring Road, South 3rd Ring Road etc. by the overall area of route to multiple mobile device places of monitoring.
102, road network information and the identification information of mobile device that often group comprises are sent at least one acquisition node by Surveillance center, the locating information of corresponding mobile device is gathered according to identification information to make acquisition node, and the current location information of corresponding mobile device is determined according to locating information and road network information, road network information comprises road origin information, endpoint information and the path locus information that Surveillance center monitors, and locating information at least comprises the identification information of mobile device, the longitude information of mobile device and latitude information.
The subregion that the identification information and road network information that belong to same subregional one group of mobile device can send to mobile device corresponding by Surveillance center at least one acquisition node corresponding, with the locating information making acquisition node gather mobile device.The identification information of mobile device can be the ID of mobile device, as the license plate number etc. of vehicle.Before road network information and the identification information of mobile device that often group comprises are sent at least one acquisition node by Surveillance center, Surveillance center can also obtain road network information from electronic chart.
103, Surveillance center receives the current location information of the mobile device that acquisition node sends.
The current location of the mobile device that at least one acquisition node received can send by Surveillance center adopts rich network application (RichInternetApplication, RIA) technology to be presented in electronic chart.
Further, Surveillance center can obtain the mobile device current time that Surveillance center preserves before historical movement trace information in setting-up time, the historical movement trace information of mobile device is in the setting-up time of mobile device before current time, the positional information of each moment mobile device.Surveillance center can according to the historical movement trace information of mobile device and institute's current location information, determine the current kinetic track of mobile device, current kinetic track is the movement locus obtained after the position of each moment mobile device in the setting-up time of mobile device before current time and current location carry out line in chronological order.The current kinetic track of mobile device can adopt RIA technology to show by Surveillance center.
The positioning of mobile equipment method that the present embodiment provides is carried out group by Surveillance center to pending multiple mobile devices and is divided, road network information and the identification information of mobile device that often group comprises are sent at least one acquisition node, and receive the current location information of the described mobile device that acquisition node sends, improve Surveillance center to the processing speed of the GPS locating information of magnanimity and accuracy, and then realize the particular location of display mobile device in real time.
Fig. 2 is the flow chart of another embodiment of positioning of mobile equipment method of the present invention, as shown in Figure 2, comprising:
201, acquisition node receives the road network information of Surveillance center's transmission and the identification information of at least one mobile device, at least one mobile device belongs to the same group of equipment that Surveillance center divides, and road network information comprises road origin information, endpoint information and the path locus information that Surveillance center monitors.
202, acquisition node gathers the locating information of corresponding mobile device according to identification information, and locating information at least comprises the identification information of mobile device, the longitude information of mobile device and latitude information.
203, acquisition node is according to the current location information of locating information and road network information determination mobile device.
Acquisition node can first determine according to locating information and road network information the road information that mobile device mates, then according to the current location information of this road information determination mobile device.
As shown in Fig. 3 a, Fig. 3 b and Fig. 3 c, acquisition node is determined: acquisition node is with the longitude information of mobile device and coordinate points corresponding to latitude information, namely the measuring position in Fig. 3 a is the center of circle, with the position error preset for radius is justified, searches the road set that path locus is crossing with this circle, road a is comprised in road set, road b, road c, road d, road e, road f.If comprise the road that position before the current time of mobile device is corresponding in road set, then determine that road that mobile device mates is road corresponding to position before the current time of mobile device.If do not comprise the road that position before the current time of mobile device is corresponding in road set, then do vertical line from the center of circle to the route of all roads road set, obtain the length of perpendicular of the center of circle to every bar road, get the road information that road corresponding to the shortest vertical line is mobile device coupling.In addition, acquisition node also can obtain coordinate points corresponding to multiple locating information in a period of time before mobile device current time, vertical line is done respectively to the route of all roads road set in the coordinate points corresponding from multiple locating information and the center of circle, as shown in Figure 3 b, obtain these coordinate points and the center of circle mean value to all length of perpendicular of the every bar road in road set, get the road information that road corresponding to minimum length of perpendicular mean value is mobile device coupling.
The road that acquisition node can mate from measuring position to mobile device makes vertical line, and as the road a in Fig. 3 c, intersection point is the current location of mobile device.The road that mobile device mates can also be approximately multiple line segment by acquisition node, and make vertical line from the center of circle to each line segment, getting intersection point corresponding to the shortest vertical line is the current location of mobile device.If intersection point corresponding to the shortest vertical line is on the extended line of the line segment of correspondence, then calculates the center of circle respectively to the length of two end points of this line segment, the center of circle is defined as the current location of mobile device to the end points that the length of the end points of this line segment is shorter.
Due to the locating information from collection central data mobile device, determine that the current location of mobile device shows between the current location of mobile device to Surveillance center and has certain time of delay, cause the gap between current location and physical location in Fig. 3 c, acquisition node can obtain the translational speed of mobile device and above-mentioned time of delay, and according to the translational speed of mobile device and time of delay, determine the gap between the current location of mobile device and physical location, the physical location of mobile device is adopted to replace the current location of mobile device, improve the accuracy gathering center processing locating information, and then improve the accuracy of Surveillance center's process locating information, realize the particular location of display mobile device in real time further.
Further, acquisition node can also obtain the directional information of mobile device, when mobile device turns round, acquisition node can according to the directional information of the longitude information of mobile device, latitude information and mobile device, determine the road information that mobile device mates, improve the accuracy of the road information of acquisition node determination mobile device coupling, the accuracy of the current location of further raising acquisition node determination mobile device, improve the accuracy of Surveillance center's process locating information, realize the particular location of display mobile device in real time further.
204, the current location information of mobile device is sent to Surveillance center by acquisition node.
The positioning of mobile equipment method that the embodiment of the present invention provides receives the road network information of Surveillance center's transmission and the identification information of at least one mobile device by acquisition node, and the locating information of corresponding mobile device is gathered according to identification information, according to the locating information of mobile device and the current location information of road network information determination mobile device, improve Surveillance center to the processing speed of the GPS locating information of magnanimity and accuracy, and then realize the particular location of display mobile device in real time.
Fig. 4 is the flow chart of another embodiment of positioning of mobile equipment method of the present invention, as shown in Figure 4, on basis embodiment illustrated in fig. 2, if acquisition node receives the identification information of at least two mobile devices that Surveillance center sends, then acquisition node can specifically comprise the following steps according to the current location information of locating information and road network information determination mobile device:
2031, the locating information of acquisition node corresponding to the longitude information of at least two mobile devices and latitude information, carries out dividing elements at least two mobile devices.
When the overall area at multiple mobile device places of monitoring is divided into multiple subregion according to the division methods preset by Surveillance center, during each subregion at least one acquisition node of correspondence, subregion corresponding to acquisition node also can divide according to the longitude information of mobile device and latitude information, subregion is divided into multiple unit, and each unit comprises at least one mobile device.
2032, the locating information of the mobile device in road network information and each unit is sent at least one analysis node by acquisition node, to make analysis node according to the current location information of locating information and road network information determination mobile device.
Analysis node is identical according to the process of the current location information of locating information and road network information determination mobile device according to the process of the current location information of locating information and road network information determination mobile device and acquisition node.
2033, the current location information of the mobile device of acquisition node receiving and analyzing node transmission.
The positioning of mobile equipment method that the embodiment of the present invention provides receives the road network information of Surveillance center's transmission and the identification information of at least one mobile device by acquisition node, and the locating information of corresponding mobile device is gathered according to identification information, and the locating information of mobile device and road network information are sent at least one analysis node, by the current location information of analysis node according to the locating information of mobile device and road network information determination mobile device, further increasing Surveillance center to the processing speed of the GPS locating information of magnanimity and accuracy, and then realize the particular location of display mobile device in real time.
One of ordinary skill in the art will appreciate that: all or part of step realizing above-mentioned each embodiment of the method can have been come by the hardware that program command is relevant.Aforesaid program can be stored in a computer read/write memory medium.This program, when performing, performs the step comprising above-mentioned each embodiment of the method; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium.
Fig. 5 is the structural representation of a positioning device for mobile equipment of the present invention embodiment, as shown in Figure 5, comprising:
Divide module 51, divide for carrying out group to pending multiple mobile devices;
Sending module 52, for road network information and the identification information of mobile device that often group comprises are sent at least one acquisition node, the locating information of corresponding mobile device is gathered according to identification information to make acquisition node, and the current location information of corresponding mobile device is determined according to locating information and road network information, road network information comprises road origin information, endpoint information and the path locus information that Surveillance center monitors, and locating information at least comprises the identification information of mobile device, the longitude information of mobile device and latitude information;
Receiver module 53, for receiving the current location information of the mobile device that acquisition node sends.
Further, divide module 51 specifically for, according to the division methods preset, the overall area at multiple mobile device places of monitoring is divided into multiple subregion, at least one acquisition node corresponding in each subregion; Obtain the historical position information before the current time of mobile device, determine the subregion belonging to mobile device; Same subregional mobile device will be belonged to and be divided into one group.
Further, sending module 52 also for, by least one acquisition node that the identification information and road network information that belong to same subregional one group of mobile device send to the subregion belonging to mobile device corresponding.
Again further, a kind of positioning device for mobile equipment provided embodiment illustrated in fig. 5, also comprises:
Acquisition module, for the historical movement trace information before obtaining mobile device current time that Surveillance center preserves in setting-up time;
Determination module, for according to historical movement trace information and current location information, determines the current kinetic track of mobile device.
The process of the positioning device for mobile equipment locating mobile device that the embodiment of the present invention provides is identical with embodiment illustrated in fig. 1, does not repeat them here, the process embodiment shown in Figure 1 of locating mobile device.
The positioning device for mobile equipment that the embodiment of the present invention provides carries out group by Surveillance center to pending multiple mobile devices and divides, road network information and the identification information of mobile device that often group comprises are sent at least one acquisition node, and receive the current location information of the described mobile device that acquisition node sends, improve Surveillance center to the processing speed of the GPS locating information of magnanimity and accuracy, and then realize the particular location of display mobile device in real time.
Fig. 6 is the structural representation of another embodiment of positioning device for mobile equipment of the present invention, as shown in Figure 6, comprising:
Receiver module 61, for receiving the road network information and the identification information of at least one mobile device that Surveillance center sends, at least one mobile device belongs to the same group of equipment that Surveillance center divides, and road network information comprises road origin information, endpoint information and the path locus information that Surveillance center monitors;
Acquisition module 62, for gathering the locating information of corresponding mobile device according to identification information, locating information at least comprises the identification information of mobile device, the longitude information of mobile device and latitude information;
Determination module 63, for the current location information according to locating information and road network information determination mobile device;
Determination module 63 specifically for, according to the locating information corresponding to the longitude information of at least two mobile devices and latitude information, dividing elements is carried out at least two mobile devices;
The locating information of the mobile device in road network information and each unit is sent at least one analysis node, to make analysis node according to the current location information of locating information and road network information determination mobile device;
The current location information of the mobile device that receiving and analyzing node sends.
Sending module 64, for sending to Surveillance center by the current location information of mobile device.
The process of the positioning device for mobile equipment locating mobile device that the embodiment of the present invention provides is identical with embodiment illustrated in fig. 2, does not repeat them here, the process embodiment shown in Figure 2 of locating mobile device.
The positioning device for mobile equipment that the embodiment of the present invention provides, the road network information sent by reception Surveillance center and the identification information of at least one mobile device, and the locating information of corresponding mobile device is gathered according to identification information, according to the locating information of mobile device and the current location information of road network information determination mobile device, improve Surveillance center to the processing speed of the GPS locating information of magnanimity and accuracy, and then realize the particular location of display mobile device in real time.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (12)
1. a positioning of mobile equipment method, is characterized in that, comprising:
Surveillance center carries out group to pending multiple mobile devices and divides;
Road network information and the identification information of mobile device that often group comprises are sent at least one acquisition node by described Surveillance center, the locating information of corresponding mobile device is gathered according to described identification information to make described acquisition node, and the current location information of corresponding mobile device is determined according to described locating information and described road network information, described road network information comprises the road origin information of described Surveillance center monitoring, endpoint information and path locus information, described locating information at least comprises the identification information of mobile device, the longitude information of described mobile device and latitude information,
Described Surveillance center receives the current location information of the described mobile device that described acquisition node sends.
2. method according to claim 1, is characterized in that, also comprises:
Described Surveillance center obtain the described mobile device current time that described Surveillance center preserves before historical movement trace information in setting-up time;
Described Surveillance center, according to described historical movement trace information and described current location information, determines the current kinetic track of described mobile device.
3. method according to claim 1 and 2, is characterized in that, if described Surveillance center preserves the historical movement trace information of pending multiple mobile devices, described Surveillance center carries out group to pending multiple mobile devices and divides, and is specially:
The overall area at multiple mobile device places of monitoring is divided into multiple subregion according to the division methods preset by described Surveillance center, each subregion at least one acquisition node corresponding;
Described Surveillance center obtains the historical position information before the current time of mobile device, determines the subregion belonging to mobile device;
Described Surveillance center will belong to same subregional mobile device and be divided into one group.
4. method according to claim 3, is characterized in that, road network information and the identification information of mobile device that often group comprises send at least one acquisition node to be specially by described Surveillance center:
At least one acquisition node that the identification information and road network information that belong to same subregional one group of mobile device send to the subregion belonging to described mobile device corresponding by described Surveillance center.
5. a positioning of mobile equipment method, is characterized in that, comprising:
Acquisition node receives the road network information of Surveillance center's transmission and the identification information of at least one mobile device, at least one mobile device described belongs to the same group of equipment that described Surveillance center divides, and described road network information comprises road origin information, endpoint information and the path locus information that described Surveillance center monitors;
Described acquisition node gathers the locating information of corresponding mobile device according to described identification information, and described locating information at least comprises the identification information of mobile device, the longitude information of described mobile device and latitude information;
Described acquisition node is according to the current location information of described locating information and described road network information determination mobile device;
The current location information of described mobile device is sent to Surveillance center by described acquisition node.
6. method according to claim 5, it is characterized in that, if acquisition node receives the identification information of at least two mobile devices that Surveillance center sends, then described acquisition node is according to the current location information of described locating information and described road network information determination mobile device, comprising:
The locating information of described acquisition node corresponding to the longitude information of described at least two mobile devices and latitude information, carries out dividing elements to described at least two mobile devices;
The locating information of the mobile device in described road network information and each unit is sent at least one analysis node by described acquisition node, determines the current location information of described mobile device to make described analysis node according to described locating information and described road network information;
Described acquisition node receives the current location information of the described mobile device that described analysis node sends.
7. a positioning device for mobile equipment, is characterized in that, comprising:
Divide module, divide for carrying out group to pending multiple mobile devices;
Sending module, for road network information and the identification information of mobile device that often group comprises are sent at least one acquisition node, the locating information of corresponding mobile device is gathered according to described identification information to make described acquisition node, and the current location information of corresponding mobile device is determined according to described locating information and described road network information, described road network information comprises the road origin information of Surveillance center's monitoring, endpoint information and path locus information, described locating information at least comprises the identification information of mobile device, the longitude information of described mobile device and latitude information,
Receiver module, for receiving the current location information of the described mobile device that described acquisition node sends.
8. device according to claim 7, is characterized in that, also comprises: acquisition module, for the historical movement trace information before obtaining described mobile device current time that described Surveillance center preserves in setting-up time;
Determination module, for according to described historical movement trace information and described current location information, determines the current kinetic track of described mobile device.
9. the device according to claim 7 or 8, it is characterized in that, if described Surveillance center preserves the historical movement trace information of pending multiple mobile devices, described division module specifically for, according to the division methods preset, the overall area at multiple mobile device places of monitoring is divided into multiple subregion, at least one acquisition node corresponding in each subregion;
Obtain the historical position information before the current time of mobile device, determine the subregion belonging to mobile device;
Same subregional mobile device will be belonged to and be divided into one group.
10. device according to claim 9, it is characterized in that, described sending module also for, by least one acquisition node that the identification information and road network information that belong to same subregional one group of mobile device send to the subregion belonging to described mobile device corresponding.
11. 1 kinds of positioning device for mobile equipments, is characterized in that, comprising:
Receiver module, for receiving the road network information and the identification information of at least one mobile device that Surveillance center sends, at least one mobile device described belongs to the same group of equipment that described Surveillance center divides, and described road network information comprises road origin information, endpoint information and the path locus information that described Surveillance center monitors;
Acquisition module, for gathering the locating information of corresponding mobile device according to described identification information, described locating information at least comprises the identification information of mobile device, the longitude information of described mobile device and latitude information;
Determination module, for the current location information according to described locating information and described road network information determination mobile device;
Sending module, for sending to Surveillance center by the current location information of described mobile device.
12. devices according to claim 11, is characterized in that, if receiver module receives the identification information of at least two mobile devices that Surveillance center sends, described determination module specifically for,
According to the locating information corresponding to the longitude information of described at least two mobile devices and latitude information, dividing elements is carried out to described at least two mobile devices;
The locating information of the mobile device in described road network information and each unit is sent at least one analysis node, determines the current location information of described mobile device to make described analysis node according to described locating information and described road network information;
Receive the current location information of the described mobile device that described analysis node sends.
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| CN104539448B (en) * | 2014-12-15 | 2017-12-26 | 北京百度网讯科技有限公司 | A kind of method, collecting unit and system for being used to gather exchanger information |
| CN105303637B (en) * | 2015-11-03 | 2018-05-18 | 用友网络科技股份有限公司 | Coordinate points upload and automatic inspection device and method based on mobile application |
| US11589188B1 (en) | 2021-05-27 | 2023-02-21 | T-Mobile Usa, Inc. | Device-based timely emergency call routing |
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