Assistant location method and system based on SUPL platform

An auxiliary positioning and platform technology, applied in the field of satellite navigation, can solve the problems of high power consumption of terminals, inability to meet mobile emergency positioning, poor first positioning accuracy, etc., and achieve the effect of improving tracking sensitivity and shortening the first positioning time.

Inactive Publication Date: 2015-07-08
UNICORE COMM INC
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AI Technical Summary

Problems solved by technology

For example, it cannot meet the requirements of mobile emergency positioning, including the following problems: the first positioning time is long, the first positioning accuracy is poor; it is highly dependent on navigation signals and the environment, and the receiver is easy to lose lock in areas with weak signals; the terminal consumes a lot of power
[0005] The first positioning time of the normal cold start of the receiver is 30 seconds to 1 minute, but under weak signal conditions, due to the increase in the bit error rate of message decoding, the first positioning time is further extended, which cannot meet the requirements of mobile emergency positioning

Method used

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  • Assistant location method and system based on SUPL platform
  • Assistant location method and system based on SUPL platform

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Embodiment Construction

[0038] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0039] figure 1 It is a flowchart of the assisted positioning method based on the SUPL platform of the present invention, such as figure 1 shown, including the following steps:

[0040] Step 101, the access point (AP) requests positioning assistance information from the location server according to the preset time interval, receives the positioning assistance information sent by the location server, and stores it according to the receiving time.

[0041] It should be noted that since the AP and the location server use the Radio Resource Location (RRLP) protocol to communica...

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Abstract

The invention discloses an assistant location method and system based on an SUPL platform. The assistant location method comprises the steps that location assistant information is requested by an access point (AP) to a position server according to preset duration of intervals, and the location assistant information sent by the position server is received and stored according to received time; when cold boot initial boot information of a receiver sent by a user side receiver is received by the AP, and location assistant information received at the last time is coded and then transmitted to the user side receiver; location is conducted by the user side receiver according to the obtained location assistant information. According to the technical scheme, a first-time location time conducted by the receiver through cold boot is shortened, and meanwhile the tracking sensitivity of the receiver under a weak signal environment is improved.

Description

technical field [0001] The invention relates to the field of satellite navigation, in particular to an auxiliary positioning method and system based on a secure user plane positioning (SUPL) platform. Background technique [0002] Traditional navigation technology has met most of the commercial needs, but there are still some deficiencies. For example, it cannot meet the requirements of mobile emergency positioning, including the following problems: the first positioning time is long, the first positioning accuracy is poor; it is highly dependent on navigation signals and the environment, and the receiver is easy to lose lock in areas with weak signals; the terminal consumes a lot of power . [0003] The fundamental way to solve the above problems is to reduce the time for the first acquisition of the signal and provide enough external message information, which includes satellite ephemeris, satellite almanac, time and position information. According to the provided prior ...

Claims

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Application Information

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IPC IPC(8): G01S19/45
CPCG01S19/25
Inventor 王玉宝张正烜廖炳瑜吴红甲黄金陈新王婷婷张郁
Owner UNICORE COMM INC
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