CN105044732A - Broadcasting authentication method based on foundation enhancement difference network - Google Patents
Broadcasting authentication method based on foundation enhancement difference network Download PDFInfo
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- CN105044732A CN105044732A CN201510531255.5A CN201510531255A CN105044732A CN 105044732 A CN105044732 A CN 105044732A CN 201510531255 A CN201510531255 A CN 201510531255A CN 105044732 A CN105044732 A CN 105044732A
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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
- G01S19/03—Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/06—Authentication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
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Abstract
The invention provides a broadcasting authentication method based on a foundation enhancement difference network. The method is characterized in that a user terminal sends information to a data center so as to carry out authentication request and the data center determines the user terminal and validity of the information sent by the user terminal; the data center establishes a link with the user terminal passing the authentication, monitors an online state in real time, broadcasts precision positioning correction information at regular time according to a service authority of the user terminal and the position of the user terminal through a difference network and pushes integration position service information; after receiving service information, the user terminal extracts the precision positioning correction information, the integration position service information and user-defined information, sends confirmation information to the data center and notifies the data center of a receiving service state. A user identification capability is high, authentication time is short and an authentication rate is high. An integration position service is broadcasted and identified through the difference network, an existing network resource is fully used, and a service content and a service capability of the foundation enhancement system are enriched.
Description
Technical field
The present invention relates to a kind of based on ground strengthen differential networks broadcast authentication method, particularly relate to a kind of be applicable to satellite navigation system field based on ground strengthen differential networks broadcast authentication method.
Background technology
In order to improve the navigation performance of satellite navigation system, especially the integrity of satellite navigation is improved, to meet the requirement in different field location information and positioning precision, on the basis of satellite navigation system independent operating, Global Navigation Satellite System (GNSS) strengthens the system definition Local Area Augmentation System of three types, to strengthen satellite navigation performance, comprise Aircraft-based augmentation system (ABAS), satellite-based augmentation system (SBAS) and ground and strengthen system (GBAS).
Ground strengthens the part that system is GLONASS (Global Navigation Satellite System), and the composition of this system comprises three parts: Aerospace Satellite, ground data center and user terminal.The major function of Aerospace Satellite is to provide satellitosis, location and time signal; The major function at ground data center comprises reception spacing wave, and provides differential data for user terminal and correct data; Subscriber equipment realizes the determination of self initial position by receiving Aerospace Satellite signal, the differential data sent by receiving ground data center revises its positional information with correction data, thus reaches precision optimum.
Now, under large data age concept, it is also more and more extensive that ground strengthens systematic difference field, such as, in smart travel, intelligent transportation, smart city, always children's love, dangerous monitoring, measurement mapping etc.Its service content is also no longer only differential data and corrects broadcasting of data, also comprises broadcasting of the integrated location information on services of applicable every field.
Existingly broadcast in authentication method, defect main manifestations is:
(1), in prior art, the data content that traditional ground enhancing system broadcasts certification by differential networks is not full, and network utilization is low.
(2) in prior art, what ground strengthened that system provides is only hi-Fix information after resolving, along with the proposition of position-based service concept, the data center that ground strengthens system not only needs to provide high-precision locating information, a large amount of integrated location information on services to user, but also need to obtain a large amount of information relevant to position from user terminal and carry out supporting, and traditional broadcast authentication mechanism and cannot meet the requirement that location-based service is provided at large data age.
(3) in prior art, mutual between data center and user terminal is only the update information of terminal general location information and center calculation, for the data center of integrated location service is provided, the data message of the lower communication of this mechanism is abundant not, easily cause data center's calculated amount large, the inaccurate situation of integrated location information service provided even is provided.
(4) in prior art, broadcast in authentication mechanism weak to user's recognition capability, the reliability established the link between user and data center is low, need long request authentication could establish the link with system, even occur that the situations such as the information on services of mistake are refused to connect with user and provide by data center.
Summary of the invention
It is high that the technical problem to be solved in the present invention is to provide a kind of network utilization, and user's recognition capability is strong, authenticated time section, and certification rate is high, and establish the link reliability high strengthen differential networks based on ground broadcast authentication method.
The technical solution used in the present invention is as follows: a kind of based on ground strengthen differential networks broadcast authentication method, concrete grammar step is:
Step one, user terminal send information to data center and carry out authentication request, the validity of data center to user terminal and the information of transmission thereof judges, belong to user terminal within the scope of system service and the information sent effectively then enters next step, the user terminal do not belonged within the scope of system service and invalid authentication information data center are not responded;
Step 2, user terminal by certification, data center establishes the link with it, in real time its online situation of monitoring, and passes through differential networks according to its position, according to the Service Privileges broadcasting on schedule precision positioning correcting information of user terminal, for it pushes integrated location information on services;
After step 3, user terminal receive information on services, extract precision positioning correcting information, integrated location information on services and customized information, and send confirmation to data center, it receives the state of serving to inform data center;
Described precision positioning correcting information comprises atmosphere errors, orbit error, multipath effect and observation noise;
Described integrated location information on services comprises other facilities location information of user terminal periphery.
As preferably, described step 2 also comprises: by information on services statement number, data center judges that whether the service that user terminal receives is effectively continuous, if the service statement number in user terminal confirmation is discontinuous, then data center provides information on services according to the position that user terminal is up-to-date for it, resets information on services statement number; If data center receives user terminal confirmation time-out, data center then will not respond this information.
As preferably, in described step 2, if there is user terminal and data center's break link situation, data center then no longer for it provides information on services, until establish the link next time.
As preferably, the statement number that data center broadcasts service is used for reminding subscriber terminal, guarantee that user receives the continuity of information on services, during to appearance discontinuous situation, user terminal is by service statement number receipt, inform and occur that information on services obtains discontinuous situation in the middle of data center, the data center position of then writing in reply in breath according to the confirmation of user is again for user terminal provides information on services and reset service statement number.
As preferably, described data center sends data and user terminal to transmit data comprises user terminal unique sequence numbers.
As preferably, described user terminal to transmit data also comprises latitude, latitude mark, longitude and longitude mark residing for user terminal.
As preferably, described data center sends data and user terminal to transmit data also comprises user terminal manufacturer type.
As preferably, described data center sends data and also comprises data parameters, and user terminal sends the time interval of locating information, and data center is to the time interval of user terminal to transmit data.
Compared with prior art, the invention has the beneficial effects as follows: user's recognition capability is strong, authenticated time section, and certification rate is high; Integrated location service is undertaken broadcasting certification by difference net, makes full use of conventional network resources, enriched service content and service ability that ground strengthens system; Be applicable to various types of differential networks in ground enhancing system, achieve as user in system ovelay range provides real-time with high-precision location service information; Meanwhile, the content that communication data comprises can meet the demand of industry-by-industry application to differential data, facilitates carrying out for industry user's integrated information service, promotes efficiency of service.
Accompanying drawing explanation
Fig. 1 is the broadcasting identifying procedure schematic diagram of the present invention's wherein embodiment.
Fig. 2 be the present invention wherein in an embodiment data center send data layout and implication thereof.
Fig. 3 is the present invention's wherein user terminal to transmit data form and implication thereof in an embodiment.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Arbitrary feature disclosed in this instructions (comprising any accessory claim, summary and accompanying drawing), unless specifically stated otherwise, all can be replaced by other equivalences or the alternative features with similar object.That is, unless specifically stated otherwise, each feature is an example in a series of equivalence or similar characteristics.
User terminal needs the heart in the data to complete to register, register its production trading company Type, unique sequence numbers ID or SIM card number (when 2G/3G/4G is as differential networks); Data center determines its service range according to its Service Privileges and service content, carries out packet service.
As shown in Figure 1 based on ground strengthen differential networks broadcast authentication method, concrete grammar step is:
Step one, user terminal send information to data center and carry out authentication request, the validity of data center to user terminal and the information of transmission thereof judges, belong to user terminal within the scope of system service and the information sent effectively then enters next step, the user terminal do not belonged within the scope of system service and invalid authentication information data center are not responded.In this specific embodiment, the content of Effective judgement comprises production trading company Type, unique sequence numbers ID or SIM card number (when 2G/3G/4G is as differential networks), call duration time stabs and the validity of satellite data.
Step 2, user terminal by certification, data center establishes the link with it, its online situation of real-time monitoring, and according to its position by the differential networks such as GPRS, 3G, 4G, WIFI, WLAN or radio station, according to the Service Privileges broadcasting on schedule precision positioning correcting information of user terminal, for it pushes integrated location information on services; If there is user terminal and data center's break link situation, data center then no longer for it provides information on services, until establish the link next time.
In this specific embodiment, by information on services statement number (Command), data center judges that whether the service that user terminal receives is effectively continuous, if the service statement number in user terminal confirmation is discontinuous, then data center provides information on services according to the position that user terminal is up-to-date for it, resets information on services statement number; If data center receives user terminal confirmation time-out, data center then will not respond this information.The statement number that data center broadcasts service is used for reminding subscriber terminal, guarantee that user receives the continuity of information on services, during to appearance discontinuous situation, user terminal is by service statement number receipt, inform and occur that information on services obtains discontinuous situation in the middle of data center, the data center position of then writing in reply in breath according to the confirmation of user is again for user terminal provides information on services and reset service statement number.
After step 3, user terminal receive information on services, extract precision positioning correcting information, integrated location information on services and customized information, and send confirmation to data center, it receives the state of serving to inform data center.
Described precision positioning correcting information comprises atmosphere errors, orbit error, multipath effect and observation noise; Described integrated location information on services comprises other facilities location information of user terminal periphery.
This broadcasting authentication method, strengthen system for adopting the ground of different differential mode can be suitable for, meet under dissimilar differential networks, what ground strengthened that system provides integrated location information on services broadcasts authentication requesting, improve the certification rate between user and data center, ensure that user obtains the accuracy that data center broadcasts information on services.
Solve at large data age, by ground strengthen differential networks integrated location information on services is provided time, it broadcasts the problem that authentication mechanism cannot meet the demands; Solve traditional ground and strengthen the problem that in differential networks, communication data is few, content is insufficient, for user provides location-based service integrated information accurately; Solve that user terminal recognition capability in existing scheme is weak, authenticated time is long, certification rate is low, establish the link the problems such as poor reliability.
As shown in Figures 2 and 3, described data center sends data and user terminal to transmit data comprises user terminal unique sequence numbers, improves the certification rate between data center and user; Latitude residing for user terminal in user terminal to transmit data, latitude mark, longitude and longitude mark, improve data supporting for the service of user's high precision position conscientiously; Described data center sends data and user terminal to transmit data also comprises user terminal manufacturer type; Described data center sends data and also comprises data parameters, and user terminal sends the time interval of locating information, and data center is to the time interval of user terminal to transmit data.
Communication protocol basic format comprises agreement opening flag, concrete protocol data, agreement end mark three parts.Whole communication protocol is divided into data center to send data layout and user terminal to transmit data information format two kinds.
In this specific embodiment:
The data message form that data center sends to user terminal is " *, Type, ID, Data, TIME, Parameter1, Parameter2, Parameter3, Parameter4, # ".Wherein between each data item with comma, " as list separator, " * " presentation protocol data start mark; " Type " represents user terminal manufacturer type; " ID " represents user terminal unique sequence numbers; " Data " represents data content; " TIME " represents the user terminal time; " Parameter " represents data parameters, and such as " Parameter1 " represents the time interval of broadcast information; " Parameter2 " represents precision positioning correcting information; " Parameter3 " represents monitoring and integrated location information on services; " Parameter4 " represents user and system self-defined information; " # " presentation protocol ED identifies.The terminal manufacturer type (Type) of user authentication and terminal unique sequence numbers (ID) are broadcast to user terminal as identifying information by data center, during user end certification, its Type information and id information are mated with the information of the preservation in database by data center, confirm that it enjoys the authority of service; When user terminal receives this two field, contrasting by carrying out mating with self manufacturer's type and unique sequence numbers, judging whether the information on services that receives is required for oneself, as unmatched, will not respond these data received.
The statement number (Command) that data center broadcasts service is used for reminding subscriber terminal, guarantee that user receives the continuity of information on services, during to appearance discontinuous situation, user terminal is by service statement number receipt, inform and occur that information on services obtains discontinuous situation in the middle of data center, data center is then again Terminal for service information according to the confirmation general location of writing in reply in breath of user and resets service statement number.
Call duration time stamp (TIME) refers to that the heart broadcasts the temporal information in data message moment in the data, by this field information, user terminal can judge that whether the information received is expired, for expired data, user terminal will not adopt, and this field can be evaded because network delay causes data improper use to cause the effect of mislead users.
Parameter1 ~ Parameter4 is the main contents realizing precision positioning and position Synthesis service, and wherein Parameter1 is that the frequency that data center broadcasts data according to the difference of user class is also different; Parameter2 and Parameter3 is precision positioning modified value information and the position Synthesis information on services of selecting optimum base station in the information such as position, direction according to user authentication; This mechanism has also reserved user and system self-defined information Parameter4, can customize application Additional Services (such as location tracking etc.) by this field user.
User terminal is divided into general data information format to the data message that data center sends and confirms data message form two kinds.General data information refers to the authentication information that user sends to data center, and its form is " *, Type, ID, F, TIME, X, Lat, Lat_D, Lon, Lon_G, Sp, Dir, DMY, # ".Wherein, " Type " represents terminal type; " D " represents terminal unique sequence numbers; " F " presentation format type; " TIME " represents that call duration time stabs; " X " expression judges that whether satellite data is effective, and A is that effectively V is invalid; " Lat " represents latitude; " Lat_D " represents that latitude identifies, and value is N or S, N is north latitude, and S is south latitude; " Lon " represents longitude; " Lon_G " represents that longitude identifies, and value is E or W, E is east longitude, and W is west longitude; " Sp " is velocity amplitude; The position angle that " Dir " moves for user terminal, positive north is 0, and orientation, due east represents 90 ° by that analogy; " DMY " represent day/moon/year.Confirm that data message refers to the confirmation that user sends when receiving the precision positioning modified value and comprehensive service information that data center broadcasts, its form is " *, Type, ID, F, Command, TIME, X, Lat, Lat_D, Lon, Lon_G, Sp, Dir, DMY, # ".Wherein, " Command " represents that data center plays the statement number of service, is received by terminal and returns; " time " represents the time be identified.
Terminal manufacturer type (Type) and terminal unique sequence numbers (ID), identification marking as user terminal self is sent to data center, alignd by data center and carry out the process that identifies and file, and broadcast to user terminal when broadcasting information on services at every turn as identification marking, solve using radio station, WIFI or WLAN broadcast service as differential networks time, data center identifies inaccurate problem.
Format Type (F) refers to be the data layout that user terminal issues data center, and this form is mainly used for informing that the data message that data center this time sends is authentication information or confirmation.
The statement number (Command) that data center broadcasts service only plays mark action in confirmation, for broadcasting the confirmation of information on services statement number to received data center, without this field data in general information, when this field information that user terminal returns and this field information that data center broadcasts inconsistent time, data center then broadcasts information on services according to the position that user terminal is up-to-date, and resets information on services statement number.
The time value (time) be identified is also only at confirmation mark action in mid-term, and for informing data center, its information on services of broadcasting is identified the temporal information in moment, can solve time-out confirm cause service failure etc. problem.
Call duration time stamp (TIME) refers to user terminal and sends certification and the temporal information in confirmation moment, whether data center can judge the information time-out received by this field information, for the data of time-out, data center will not provide service, and this field can be evaded because the factors such as network delay cause the situation of data improper use and mislead users.
X field, for judging that whether satellite data is effective, when this field returns A, represents that satellite data is effective; When this field returns V, represent that satellite data is invalid; According to this field, data center then can judge that whether this general location reported of user terminal is effective, for when have received invalid satellite data, data center then will not provide service, and this field can be evaded user terminal because unsuccessful location and be caused data center to broadcast the improper and situation of mislead users of service.
What represent together with Lat field, Lat_D field, Lon field and Lon_D field four field combination is the position of user terminal, data center carries out differential correcting by the correcting information at this general location selection reference station, and broadcasts the high precision position information after resolving and integrated location information on services to user terminal.
Data center can provide integrated location information on services more accurately for user terminal by Sp and Dir field.The information on services that user's working direction relates to, for judging the working direction of user, is then broadcast to user in conjunction with Sp information by Dir field.
According to this field data center, DMY field, for judging whether the navigation module of user terminal resolves correctly, can judge that whether the probability positions that terminal sends is credible.
By adding terminal type, terminal serial number, Format Type, statement number, information is identified the information such as time, access time stamp, navigation module satellite data state, terminal general location, speed, orientation and date, reduce the calculated amount of data center, improve the recognition capability of data center to terminal, ensure the accuracy that data center broadcasts the correctness of terminal authentication and integrated location information on services.
Differential networks is strengthened based on ground, by carrying out comprehensive Design to the composition form of its communication protocol and the content composition of communication data, achieve the optimization that it broadcasts authentication mechanism, make system can provide abundanter location service information for industry user, system service ability is stronger, real-time is better; Have that practicality is good, adaptive type is strong and the universal feature such as extensively, can the various types of differential networks of flexible Application in ground enhancing system, for the applications such as modern smart city, intelligent transportation, geographical mapping and defence engineering provide reliably, accurately with high-precision location-based service.
Claims (8)
1. based on ground strengthen differential networks broadcast an authentication method, concrete grammar step is:
Step one, user terminal send information to data center and carry out authentication request, the validity of data center to user terminal and the information of transmission thereof judges, belong to user terminal within the scope of system service and the information sent effectively then enters next step, the user terminal do not belonged within the scope of system service and invalid authentication information data center are not responded;
Step 2, user terminal by certification, data center establishes the link with it, in real time its online situation of monitoring, and passes through differential networks according to its position, according to the Service Privileges broadcasting on schedule precision positioning correcting information of user terminal, for it pushes integrated location information on services;
After step 3, user terminal receive information on services, extract precision positioning correcting information, integrated location information on services and customized information, and send confirmation to data center, it receives the state of serving to inform data center;
Described precision positioning correcting information comprises atmosphere errors, orbit error, multipath effect and observation noise;
Described integrated location information on services comprises other facilities location information of user terminal periphery.
2. according to claim 1 based on ground strengthen differential networks broadcast authentication method, described step 2 also comprises: by information on services statement number, data center judges that whether the service that user terminal receives is effectively continuous, if the service statement number in user terminal confirmation is discontinuous, then data center provides information on services according to the position that user terminal is up-to-date for it, resets information on services statement number; If data center receives user terminal confirmation time-out, data center then will not respond this information.
3. according to claim 1 and 2 based on ground strengthen differential networks broadcast authentication method, in described step 2, if there is user terminal and data center's break link situation, data center then no longer for it provides information on services, until establish the link next time.
4. according to claim 1 and 2 based on ground strengthen differential networks broadcast authentication method, the statement number that data center broadcasts service is used for reminding subscriber terminal, guarantee that user receives the continuity of information on services, during to appearance discontinuous situation, user terminal is by service statement number receipt, inform and occur that information on services obtains discontinuous situation in the middle of data center, the data center position of then writing in reply in breath according to the confirmation of user is again for user terminal provides information on services and reset service statement number.
5. according to claim 1 strengthen differential networks based on ground broadcast authentication method, described data center sends data and user terminal to transmit data comprises user terminal unique sequence numbers.
6. according to claim 1 strengthen differential networks based on ground broadcast authentication method, described user terminal to transmit data also comprises latitude residing for user terminal, latitude mark, longitude and longitude mark.
7. according to claim 1 strengthen differential networks based on ground broadcast authentication method, described data center sends data and user terminal to transmit data also comprises user terminal manufacturer type.
8. according to claim 1 based on ground strengthen differential networks broadcast authentication method, described data center sends data and also comprises data parameters, user terminal sends the time interval of locating information, and data center is to the time interval of user terminal to transmit data.
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| CN108333603B (en) * | 2018-02-12 | 2021-08-24 | 千寻位置网络有限公司 | GNSS satellite-based foundation broadcasting service and position service based method |
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