CN109655848A - Positioning system and method based on NB-IoT and AGPS - Google Patents
Positioning system and method based on NB-IoT and AGPS Download PDFInfo
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- CN109655848A CN109655848A CN201811569916.3A CN201811569916A CN109655848A CN 109655848 A CN109655848 A CN 109655848A CN 201811569916 A CN201811569916 A CN 201811569916A CN 109655848 A CN109655848 A CN 109655848A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/33—Multimode operation in different systems which transmit time stamped messages, e.g. GPS/GLONASS
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
- G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/42—Determining position
- G01S19/48—Determining position by combining or switching between position solutions derived from the satellite radio beacon positioning system and position solutions derived from a further system
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The present invention relates to internet of things field, the low problem of AGPS data efficiency is obtained by NB-IoT network for existing, it is proposed a kind of localization method based on NB-IoT and AGPS, comprising: locating module is positioned to obtain satellite location data and searches sing data and by satellite location data and will search sing data and be sent to application server through NB-IoT gateway and store；Application server obtains positioning assistance data；Data processing module with the satellite location data searched in sing data and memory module with sing data is searched carries out that the probability satellite number corresponding more than or equal to the satellite of predetermined probabilities that NB-IoT positioning terminal region can be searched is calculated according to the satellite location data for the NB-IoT positioning terminal being currently received, and the corresponding positioning assistance data of satellite number is sent to NB-IoT positioning terminal through NB-IoT gateway；The position coordinates of NB-IoT positioning terminal are calculated according to the positioning assistance data that satellite location data and data processing module are sent.The present invention is applicable to the internet of things field of positioning and low-power consumption.
Description
Technical field
The present invention relates to internet of things field, in particular to a kind of positioning system and method based on NB-IoT and AGPS.
Background technique
Global positioning system (Global Positioning System, GPS) is made of 24 satellites, is evenly distributed on 6
In a orbital plane.The distribution of satellite so that Anywhere can at least observe that 4 GPS are defended any time on earth simultaneously
Star, it is ensured that realize the round-the-clock continuous navigator fix service in the whole world.But in more complex environment, need to combine auxiliary complete
Ball global position system (Assisted Global Positioning System, AGPS) shortens time and the raising of positioning
Positioning accuracy.Currently, many mobile terminals all have AGPS function.
Narrowband Internet of Things (Narrow Band Internet of Things, NB-IoT) as all things on earth internet one
A important branch is one emerging technology of internet of things field, supports low power consuming devices to connect in the cellular data of wide area network, branch
Stand-by time length, the efficient connection to network connectivity requirements higher device are held, while very comprehensive indoor cellular can also be provided
Data connection covering.Since the low bandwidth and AGPS data volume of NB-IoT are relatively large, and NB-IoT mould group cannot be accessed directly
AGPS server obtains the data such as ephemeris, under the positioning application scenarios of NB-IoT+GPS, obtains AGPS by NB-IoT network
Data become extremely difficult and inefficient.
Summary of the invention
The technical problems to be solved by the present invention are: overcoming existing low by NB-IoT network acquisition AGPS data efficiency
The problem of, propose a kind of positioning system and method based on NB-IoT and AGPS.
The present invention solves above-mentioned technical problem, the technical solution adopted is that:
Based on the positioning system of NB-IoT and AGPS, including application server, NB-IoT gateway and NB-IoT positioning terminal；
Application server includes data acquisition module, memory module and data processing module, NB-IoT positioning terminal include locating module,
Control module and NB-IoT communication module；
Data acquisition module, for obtaining positioning assistance data；
Memory module, for storing the satellite location data of NB-IoT positioning terminal transmission and searching sing data；
Data processing module, for according to the satellite location data of NB-IoT positioning terminal being currently received and searching star number
According to and memory module in satellite location data and search sing data be calculated NB-IoT positioning terminal region can quilt
The probability searched is more than or equal to the corresponding satellite number of satellite of predetermined probabilities, by the corresponding positioning assistance data of satellite number
NB-IoT positioning terminal is sent to through NB-IoT gateway；
NB-IoT gateway, for being communicated with NB-IoT communication module and application server；
Locating module applies clothes for obtaining satellite location data and searching sing data and be sent to it through NB-IoT gateway
Business device；
Control module, for being calculated according to the positioning assistance data of satellite location data and data processing module transmission
The position coordinates of NB-IoT positioning terminal.
Preferably, the satellite location data includes longitude and latitude, and/or, the sing data of searching includes satellite number
With corresponding satellite signal strength.
Preferably, the data processing module is used for the satellite digit according to the NB-IoT positioning terminal being currently received
It is investigated that the satellite location data differed from it by the memory module less than or equal to predetermined difference value range is looked for, according to the storage found
Satellite location data in module obtain it is corresponding search sing data, by the frequency of occurrence for searching the satellite number in sing data and
Satellite signal strength is weighted to obtain the probability that the corresponding satellite in NB-IoT positioning terminal region can be searched,
The positioning assistance data that probability is more than or equal to the corresponding satellite number of predetermined probabilities is sent to NB-IoT through NB-IoT gateway to determine
Position terminal.
Further, the data processing module is also used to the corresponding positioning assistance data of satellite number through NB-IoT net
Pass is sent to before NB-IoT positioning terminal, is compressed to the positioning assistance data；The control module is also used to institute
Positioning assistance data is stated to be decompressed.
Applied to the method for the above-mentioned positioning system based on NB-IoT and AGPS, include the following steps:
A, locating module is positioned to obtain satellite location data and be searched sing data and by satellite location data and will search star
Data are sent to application server through NB-IoT gateway and are stored；Application server obtains positioning assistance data；
B, data processing module according to the satellite location data of the NB-IoT positioning terminal being currently received and searches sing data
And it the satellite location data in memory module and searches sing data and carries out NB-IoT positioning terminal region is calculated and can be searched
The probability that rope arrives is more than or equal to the corresponding satellite number of satellite of predetermined probabilities, and the corresponding positioning assistance data of satellite number is passed through
NB-IoT gateway is sent to NB-IoT positioning terminal；
C, NB-IoT positioning is calculated eventually according to the positioning assistance data that satellite location data and data processing module are sent
The position coordinates at end.
Preferably, the satellite location data includes longitude and latitude, and/or, the sing data of searching includes satellite number
With corresponding satellite signal strength.
Preferably, the step B includes:
It is differed from it by according to the lookup of the satellite location data for the NB-IoT positioning terminal being currently received and is less than or equal to make a reservation for
Satellite location data in the memory module of difference range；
It is obtained corresponding searching sing data according to the satellite location data in the qualified memory module found；
It is weighted the frequency of occurrence of the satellite number searched in sing data and satellite signal strength to obtain NB-
The probability that the corresponding satellite in IoT positioning terminal region can be searched；
The positioning assistance data that probability is more than or equal to the corresponding satellite number of predetermined probabilities is sent to through NB-IoT gateway
NB-IoT positioning terminal.
Further, described that the corresponding positioning assistance data of satellite number is sent to NB-IoT positioning through NB-IoT gateway
Before terminal, the positioning assistance data is compressed；It is described to be sent according to satellite location data and data processing module
The position coordinates that positioning assistance data calculates NB-IoT positioning terminal include decompressing to the positioning assistance data.
The beneficial effects of the present invention are:
The present invention is according to the satellite location data of the NB-IoT positioning terminal being currently received and searches sing data and storage mould
Satellite location data in block and search sing data be calculated NB-IoT positioning terminal region can be searched it is general
Rate is more than or equal to the corresponding satellite number of satellite of predetermined probabilities, by the corresponding positioning assistance data of satellite number through NB-IoT net
Pass is sent to NB-IoT positioning terminal, that is to say, that can only send the mould group for different NB-IoT positioning terminals can search for
The corresponding positioning assistance data of satellite number, rather than the corresponding positioning assistance data of all satellite numbers is sent to NB-
The data volume for being handed down to the fixed number auxiliary data of NB-IoT communication module can be greatly decreased, to subtract in IoT positioning terminal in this way
The number that few subpackage is sent, is greatly reduced the power consumption and flow rate of NB-IoT communication module, realizes in NB-IoT communication module
Under the application scenarios for adding locating module, high efficiency of transmission of the fixed number auxiliary data in NB-IoT network, and then shorten locating module
The time of positioning and raising positioning accuracy.
Detailed description of the invention
Fig. 1 is the system construction drawing of the embodiment of the present invention；
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, it below in conjunction with attached drawing and is implemented as follows
The present invention will be described in further detail for example.
As shown in Figure 1, the positioning system based on NB-IoT and AGPS, including application server, NB-IoT gateway and NB-
IoT positioning terminal；Application server includes data acquisition module, memory module and data processing module, NB-IoT positioning terminal
Including locating module, control module and NB-IoT communication module；
Data acquisition module, for obtaining positioning assistance data from AGPS server；
Memory module, for storing the satellite location data of NB-IoT positioning terminal transmission and searching sing data；
Data processing module, for according to the satellite location data of NB-IoT positioning terminal being currently received and searching star number
According to and memory module in satellite location data and search sing data be calculated NB-IoT positioning terminal region can quilt
The probability searched is more than or equal to the corresponding satellite number of satellite of predetermined probabilities, by the corresponding positioning assistance data of satellite number
NB-IoT positioning terminal is sent to through NB-IoT gateway；
NB-IoT gateway, for being communicated with NB-IoT communication module and application server；
Locating module applies clothes for obtaining satellite location data and searching sing data and be sent to it through NB-IoT gateway
Business device；
Control module, for being calculated according to the positioning assistance data of satellite location data and data processing module transmission
The position coordinates of NB-IoT positioning terminal.
Wherein, positioning assistance data, that is, AGPS data can be obtained from AGPS server, AGPS server by third party into
Row provides, in order to enable the range of positioning assistance data is suitable for all geographical position ranges where NB-IoT positioning terminal,
Positioning assistance data may include the visible GPS and BDS satellite almanac of the visible GPS and BDS satellite ephemeris in various regions and/or various regions,
The acquisition of positioning assistance data herein can produce variation according to positioning assistance data in AGPS server and go to obtain again, positioning mould
Block, which can be GPS positioning module, can also be BDS (Chinese Beidou satellite navigation system) locating module, application server and NB-IoT
Internet can be used between gateway to be communicated；It is carried out between NB-IoT gateway and NB-IoT positioning terminal using NB-IoT agreement
Communication.The satellite location data oriented in view of each NB-IoT positioning terminal of the same area it is inconsistent, so needing to calculate
Above-mentioned probability.
In order to enable satellite location data and search sing data data volume it is sufficiently small reduce NB-IoT the traffic and can expire
Data required for pedal system, satellite location data may include longitude and latitude, and/or, searching sing data may include satellite number
With corresponding satellite signal strength.
Communication efficiency is improved in order to reduce the traffic of NB-IoT positioning terminal, it is fixed to ensure while improving communication efficiency
The validity of position auxiliary data, is only sent to NB-IoT positioning terminal, data processing for the high positioning assistance data of searching probability
Module can be used for being differed from it by according to the satellite location data lookup for the NB-IoT positioning terminal being currently received and be less than or equal in advance
Determine the satellite location data in the memory module of difference range, is obtained according to the satellite location data in the memory module found
It is corresponding to search sing data, the frequency of occurrence for the satellite number searched in sing data and satellite signal strength are weighted to obtain
It is corresponding to be more than or equal to predetermined probabilities by the probability that the corresponding satellite in NB-IoT positioning terminal region can be searched for probability
The positioning assistance data of satellite number is sent to NB-IoT positioning terminal through NB-IoT gateway.
Wherein, above-mentioned predetermined difference value range may include longitude difference range and latitude difference range, and above-mentioned basis currently connects
The satellite location data lookup of the NB-IoT positioning terminal received differs from it by the memory module less than or equal to predetermined difference value range
In satellite location data can include: if in the satellite location data and memory module of the NB-IoT positioning terminal being currently received
Satellite location data between longitude difference range be less than or equal to the latitude difference of precision difference range and the two and be less than or equal to
Latitude difference range；Then corresponding satellite location data and the data that sing data is required lookup are searched in memory module.It is above-mentioned
The calculating of probability can be used: the frequency of occurrence of respective satellite number and the product of satellite signal strength are divided by all satellite numbers
Frequency of occurrence and satellite signal strength product and.
In order to reduce the traffic of NB-IoT, data processing module can also be used in the corresponding positioning auxiliary number of satellite number
According to before being sent to NB-IoT positioning terminal through NB-IoT gateway, positioning assistance data is compressed；Control module also can be used
It is decompressed in positioning assistance data.
Applied to the method for the above-mentioned positioning system based on NB-IoT and AGPS, include the following steps:
A, locating module is positioned to obtain satellite location data and be searched sing data and by satellite location data and will search star
Data are sent to application server through NB-IoT gateway and are stored；Application server obtains positioning auxiliary number from AGPS server
According to；
B, data processing module according to the satellite location data of the NB-IoT positioning terminal being currently received and searches sing data
And it the satellite location data in memory module and searches sing data and carries out NB-IoT positioning terminal region is calculated and can be searched
The probability that rope arrives is more than or equal to the corresponding satellite number of satellite of predetermined probabilities, and the corresponding positioning assistance data of satellite number is passed through
NB-IoT gateway is sent to NB-IoT positioning terminal；
C, NB-IoT positioning is calculated eventually according to the positioning assistance data that satellite location data and data processing module are sent
The position coordinates at end.
Wherein, positioning assistance data can be obtained from AGPS server, and AGPS server is provided by third party, in order to
So that the range of positioning assistance data is suitable for all geographical position ranges where NB-IoT positioning terminal, positioning assistance data
It may include the visible GPS and BDS satellite almanac of the visible GPS and BDS satellite ephemeris in various regions and/or various regions, positioning auxiliary herein
The acquisition of data can produce variation according to positioning assistance data in AGPS server and go to obtain again, and locating module can be GPS
Locating module can also be BDS (Chinese Beidou satellite navigation system) locating module, can between application server and NB-IoT gateway
It is communicated using internet；It is communicated between NB-IoT gateway and NB-IoT positioning terminal using NB-IoT agreement.In view of
The satellite location data that each NB-IoT positioning terminal of the same area is oriented it is inconsistent, so needing to calculate above-mentioned probability.
In order to enable satellite location data and search sing data data volume it is sufficiently small reduce NB-IoT the traffic and can expire
Data required for pedal system, satellite location data may include longitude and latitude, and/or, searching sing data may include satellite number
With corresponding satellite signal strength.
Communication efficiency is improved in order to reduce the traffic of NB-IoT positioning terminal, it is fixed to ensure while improving communication efficiency
The validity of position auxiliary data, is only sent to NB-IoT positioning terminal for the high positioning assistance data of searching probability, step B can be wrapped
It includes:
It is differed from it by according to the lookup of the satellite location data for the NB-IoT positioning terminal being currently received and is less than or equal to make a reservation for
Satellite location data in the memory module of difference range；
It is obtained corresponding searching sing data according to the satellite location data in the qualified memory module found；
It is weighted the frequency of occurrence for the satellite number searched in sing data and satellite signal strength to obtain NB-IoT
The probability that the corresponding satellite in positioning terminal region can be searched；
The positioning assistance data that probability is more than or equal to the corresponding satellite number of predetermined probabilities is sent to through NB-IoT gateway
NB-IoT positioning terminal.
Wherein, above-mentioned predetermined difference value range may include longitude difference range and latitude difference range, and above-mentioned basis currently connects
The satellite location data lookup of the NB-IoT positioning terminal received differs from it by the memory module less than or equal to predetermined difference value range
In satellite location data can include: if in the satellite location data and memory module of the NB-IoT positioning terminal being currently received
Satellite location data between longitude difference range be less than or equal to the latitude difference of precision difference range and the two and be less than or equal to
Latitude difference range；Then corresponding satellite location data and the data that sing data is required lookup are searched in memory module.It is above-mentioned
The calculating of probability can include: the frequency of occurrence of respective satellite number and the product of satellite signal strength are divided by all satellite numbers
Frequency of occurrence and satellite signal strength product and.
In order to reduce the traffic of NB-IoT, the corresponding positioning assistance data of satellite number is sent to through NB-IoT gateway
Before NB-IoT positioning terminal, positioning assistance data can be compressed；It is sent out according to satellite location data and data processing module
The position coordinates that the positioning assistance data sent calculates NB-IoT positioning terminal may include decompressing to positioning assistance data.
Claims (8)
1. the positioning system based on NB-IoT and AGPS, which is characterized in that including application server, NB-IoT gateway and NB-IoT
Positioning terminal；Application server includes data acquisition module, memory module and data processing module, and NB-IoT positioning terminal includes
Locating module, control module and NB-IoT communication module；
Data acquisition module, for obtaining positioning assistance data；
Memory module, for storing the satellite location data of NB-IoT positioning terminal transmission and searching sing data；
Data processing module, for according to the satellite location data of NB-IoT positioning terminal being currently received and search sing data and
It satellite location data in memory module and searches sing data and carries out NB-IoT positioning terminal region is calculated and can be searched
The probability arrived is more than or equal to the corresponding satellite number of satellite of predetermined probabilities, and the corresponding positioning assistance data of satellite number is passed through
NB-IoT gateway is sent to NB-IoT positioning terminal；
NB-IoT gateway, for being communicated with NB-IoT communication module and application server；
Locating module, for obtaining satellite location data and searching sing data and it is sent to application service through NB-IoT gateway
Device；
Control module, for calculating NB-IoT according to the positioning assistance data of satellite location data and data processing module transmission
The position coordinates of positioning terminal.
2. the positioning system as described in claim 1 based on NB-IoT and AGPS, which is characterized in that the satellite location data
Including longitude and latitude, and/or, the sing data of searching includes satellite number and corresponding satellite signal strength.
3. the positioning system as claimed in claim 2 based on NB-IoT and AGPS, which is characterized in that the data processing module
For being differed from it by according to the satellite location data lookup for the NB-IoT positioning terminal being currently received less than or equal to predetermined difference value
Satellite location data in the memory module of range obtains corresponding according to the satellite location data in the memory module found
Sing data is searched, the frequency of occurrence of the satellite number searched in sing data and satellite signal strength are weighted to obtain
It is corresponding to be more than or equal to predetermined probabilities by the probability that the corresponding satellite in NB-IoT positioning terminal region can be searched for probability
The positioning assistance data of satellite number is sent to NB-IoT positioning terminal through NB-IoT gateway.
4. the positioning system based on NB-IoT and AGPS as described in claims 1 or 2 or 3, which is characterized in that at the data
Before reason module is also used to the corresponding positioning assistance data of satellite number being sent to NB-IoT positioning terminal through NB-IoT gateway,
The positioning assistance data is compressed；The control module is also used to decompress the positioning assistance data.
5. being applied to the method for the positioning system described in claim 1 based on NB-IoT and AGPS, which is characterized in that including such as
Lower step:
A, locating module is positioned to obtain satellite location data and be searched sing data and by satellite location data and will search sing data
Application server is sent to through NB-IoT gateway to be stored；Application server obtains positioning assistance data；
B, data processing module according to the satellite location data of the NB-IoT positioning terminal being currently received and is searched sing data and is deposited
It satellite location data in storage module and searches sing data and carries out NB-IoT positioning terminal region is calculated and can be searched
Probability be more than or equal to predetermined probabilities the corresponding satellite number of satellite, by the corresponding positioning assistance data of satellite number through NB-
IoT gateway is sent to NB-IoT positioning terminal；
C, NB-IoT positioning terminal is calculated according to the positioning assistance data that satellite location data and data processing module are sent
Position coordinates.
6. method as claimed in claim 5, which is characterized in that the satellite location data includes longitude and latitude, and/or,
The sing data of searching includes satellite number and corresponding satellite signal strength.
7. method as claimed in claim 6, which is characterized in that the step B includes:
It is differed from it by according to the lookup of the satellite location data for the NB-IoT positioning terminal being currently received less than or equal to predetermined difference value
Satellite location data in the memory module of range；
It is obtained corresponding searching sing data according to the satellite location data in the qualified memory module found；
It is weighted the frequency of occurrence of the satellite number searched in sing data and satellite signal strength to obtain NB-IoT
The probability that the corresponding satellite in positioning terminal region can be searched；
The positioning assistance data that probability is more than or equal to the corresponding satellite number of predetermined probabilities is sent to NB- through NB-IoT gateway
IoT positioning terminal.
8. the method as claimed in claim 1 or 2 or 3, which is characterized in that described by the corresponding positioning assistance data of satellite number
Before being sent to NB-IoT positioning terminal through NB-IoT gateway, the positioning assistance data is compressed；It is described according to satellite
The position coordinates that the positioning assistance data that location data and data processing module are sent calculates NB-IoT positioning terminal include pair
The positioning assistance data is decompressed.
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