CN108075916B - Method and system for evaluating service quality of A-GNSS server - Google Patents
Method and system for evaluating service quality of A-GNSS server Download PDFInfo
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- CN108075916B CN108075916B CN201611012869.3A CN201611012869A CN108075916B CN 108075916 B CN108075916 B CN 108075916B CN 201611012869 A CN201611012869 A CN 201611012869A CN 108075916 B CN108075916 B CN 108075916B
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Abstract
The invention discloses a method and a system for evaluating the service quality of an A-GNSS (advanced global navigation satellite system) server, which are mainly used for evaluating the service availability, reliability and integrity of the A-GNSS server and the support capability and protocol support capability of various auxiliary positioning technologies. When the method for evaluating the reliability of the A-GNSS server assisted positioning data comprises the following steps: sending an auxiliary positioning request with a known positioning auxiliary result to an A-GNSS server through a positioning terminal virtual machine; judging whether the positioning assistance result fed back by the A-GNSS server is consistent with the concerned data in the known positioning assistance result; and if the two types of the auxiliary positioning data are consistent, judging that the auxiliary positioning data provided by the A-GNSS server is reliable, otherwise, judging that the auxiliary positioning data provided by the A-GNSS server is unreliable. The invention solves the problem that the service quality of the A-GNSS server can not be visually judged at present.
Description
Technical Field
The invention relates to the technical field of communication, in particular to an A-GNSS assisted global positioning system technology.
Background
Currently, a terminal supporting SUPL protocol assisted positioning has no intuitive method for judging whether a selected a-GNSS server is available or reliable, and whether the terminal supports the most comprehensive positioning technology, the latest version of the protocol, and extensions thereof. An unavailable/unreliable a-GNSS server may increase the terminal positioning speed and decrease the terminal positioning reliability. Supporting an incomplete a-GNSS server for the latest protocol version and extension items may disable new functions and extension functions supported by the terminal. The end-user will passively alter the a-GNSS server after the user experience becomes poor.
At present, an A-GNSS server providing services is used as background services, and no detailed version description, service content description and other descriptive documents are referred to a terminal.
Disclosure of Invention
The invention aims to provide a method and a system for evaluating the service quality of an A-GNSS server, which are used for solving the problem that the service quality of the A-GNSS server cannot be intuitively judged at present.
The invention provides a method for evaluating the reliability of auxiliary positioning data of an A-GNSS (advanced global navigation satellite system) server, which comprises the following steps:
sending an auxiliary positioning request with a known positioning auxiliary result to an A-GNSS server through a positioning terminal virtual machine;
judging whether the positioning assistance result fed back by the A-GNSS server is consistent with the concerned data in the known positioning assistance result;
and if the A-GNSS positioning data provided by the A-GNSS server are consistent, judging that the auxiliary positioning data provided by the A-GNSS server is reliable, otherwise, judging that the auxiliary positioning data provided by the A-GNSS server is unreliable.
The invention also provides a method for evaluating the integrity of the auxiliary positioning data of the A-GNSS server, which appoints the known A-GNSS server as a reference server in advance and comprises the following steps:
sending the same auxiliary positioning request to a target A-GNSS server and the reference server simultaneously through a positioning terminal virtual machine;
judging whether the auxiliary information in the positioning auxiliary result fed back by the target A-GNSS server contains the auxiliary information in the positioning auxiliary result in the reference server;
if so, judging that the auxiliary positioning data of the target A-GNSS server is complete, otherwise, judging that the auxiliary positioning data of the target A-GNSS server is incomplete.
The invention also provides a method for evaluating the support capability of a plurality of auxiliary positioning technologies of the A-GNSS server, which comprises the following steps:
sending an auxiliary positioning request containing a plurality of auxiliary positioning technologies to a target A-GNSS server through a positioning terminal virtual machine;
judging whether the positioning assistance result fed back by the A-GNSS server contains all positioning technologies in the assistance positioning request;
if yes, the A-GNSS server is judged to support all positioning technologies, otherwise, the A-GNSS server is judged to support single or partial positioning technologies.
The invention also provides a method for evaluating the A-GNSS server assisted positioning protocol and the support capability of the extension item thereof, which comprises the following steps:
sending an assisted positioning request to a target A-GNSS server through a positioning terminal virtual machine, wherein the assisted positioning request comprises a plurality of assisted positioning request information of different SUPL versions and transmission protocols and extension item combinations;
judging whether the positioning assistance result fed back by the A-GNSS server is matched with the protocol type and version in the assistance positioning request;
if so, judging that the A-GNSS server supports the current version protocol and the extension, otherwise, judging that the A-GNSS server does not support the current version protocol and the extension.
The invention also provides a method for evaluating the availability of the A-GNSS server assisted positioning service, which comprises the following steps:
establishing connection with a target A-GNSS server through a positioning terminal virtual machine;
initiating a service request to the A-GNSS server through the positioning terminal virtual machine;
and if the A-GNSS server can respond correctly, determining that the assisted positioning service provided by the A-GNSS server is available, otherwise, determining that the assisted positioning service provided by the A-GNSS server is unavailable.
The invention also provides a system for evaluating the reliability of the auxiliary positioning data of the A-GNSS server, which comprises the following steps:
the system comprises a sending unit, an A-GNSS server and a positioning terminal virtual machine, wherein the sending unit is used for sending an auxiliary positioning request with a known positioning auxiliary result to the A-GNSS server through the positioning terminal virtual machine;
the judging unit is used for judging whether the positioning assistance result fed back by the A-GNSS server is consistent with the concerned data in the known positioning assistance result or not; and if the A-GNSS positioning data provided by the A-GNSS server are consistent, judging that the auxiliary positioning data provided by the A-GNSS server is reliable, otherwise, judging that the auxiliary positioning data provided by the A-GNSS server is unreliable.
The invention also provides a system for evaluating the integrity of the auxiliary positioning data of the A-GNSS server, which appoints the known A-GNSS server as a reference server in advance and comprises the following steps:
the sending unit is used for sending the same auxiliary positioning request to the target A-GNSS server and the reference server simultaneously through the positioning terminal virtual machine;
a determining unit, configured to determine whether assistance information in a positioning assistance result fed back by the target a-GNSS server includes assistance information in a positioning assistance result in the reference server; if so, judging that the auxiliary positioning data of the target A-GNSS server is complete, otherwise, judging that the auxiliary positioning data of the target A-GNSS server is incomplete.
The invention also provides a system for evaluating the support capability of a plurality of auxiliary positioning technologies of the A-GNSS server, which comprises the following steps:
the system comprises a sending unit, a target A-GNSS server and a positioning terminal virtual machine, wherein the sending unit is used for sending an auxiliary positioning request containing a plurality of auxiliary positioning technologies to the target A-GNSS server through the positioning terminal virtual machine;
a determining unit, configured to determine whether a positioning assistance result fed back by the a-GNSS server includes all positioning technologies in the assistance-positioning request; if yes, the A-GNSS server is judged to support all positioning technologies, otherwise, the A-GNSS server is judged to support single or partial positioning technologies.
The invention also provides a system for evaluating the A-GNSS server assisted positioning protocol and the support capability of the extension items thereof, which comprises the following steps:
a sending unit, configured to send an assisted positioning request to the target a-GNSS server through the positioning terminal virtual machine, where the assisted positioning request includes multiple assisted positioning request information of different SUPL versions and transport protocols and combinations of extensions;
a determining unit, configured to determine whether a positioning assistance result fed back by the a-GNSS server matches a protocol type and version in the assistance-positioning request; if so, judging that the A-GNSS server supports the current version protocol and the extension, otherwise, judging that the A-GNSS server does not support the current version protocol and the extension.
The invention also provides a system for evaluating the availability of the A-GNSS server assisted positioning service, which comprises the following steps:
the connection unit is used for establishing connection with a target A-GNSS server through a positioning terminal virtual machine;
a sending unit, configured to initiate a service request to the a-GNSS server through the positioning terminal virtual machine;
the judging unit is used for judging whether the A-GNSS server can correctly respond; if so, determining that the assisted positioning service provided by the A-GNSS server is available, otherwise, determining that the assisted positioning service provided by the A-GNSS server is unavailable.
Compared with the prior art, the implementation mode of the invention has the main differences and the effects that:
the invention evaluates the service quality of the A-GNSS server from the aspects of the service availability, the reliability and the integrity of the A-GNSS server, the support capability of various auxiliary positioning technologies and the protocol support capability, can provide a comprehensive evaluation result, provides a basis for a terminal user to select the most appropriate and optimal A-GNSS server, can monitor the service quality of the A-GNSS server for a long time, and provides a reference for timely adjusting the selection of the A-GNSS server.
Further, an assisted positioning request with known positioning assistance result is sent to the a-GNSS server, and the reliability of the assisted positioning data provided by the a-GNSS server can be determined by determining whether the positioning assistance result fed back by the a-GNSS server is consistent with the data of interest in the known positioning assistance result.
Further, the same assistance-positioning request is sent to the target a-GNSS server and the reference server at the same time, and the integrity of the assistance-positioning data of the a-GNSS server can be determined by determining whether the assistance information in the positioning assistance result fed back by the a-GNSS server is consistent with the assistance information in the positioning assistance result in the reference server.
Furthermore, an assisted positioning request containing all known positioning technologies is sent to the A-GNSS server, and the supporting capability of the A-GNSS server for multiple assisted positioning technologies can be examined by judging whether the positioning assistance result fed back by the A-GNSS server contains all the positioning technologies in the assisted positioning request.
Furthermore, an assisted positioning request containing different versions of SUPL protocol/transport protocol is sent to the A-GNSS server, and the supporting capability of the assisted positioning protocol and the extension items of the assisted positioning protocol of the A-GNSS server can be inspected by judging whether the positioning assistance result fed back by the A-GNSS server matches with the protocol type and the version in the assisted positioning request.
Further, a service request is sent to the target A-GNSS server, and the availability of the A-GNSS server assisted positioning service can be determined by determining whether the A-GNSS server can respond correctly.
It is to be understood that within the scope of the present invention, the above-described features of the present invention and those specifically described below (e.g., in the examples) may be combined with each other to form new or preferred embodiments. For reasons of space, they will not be described in detail.
Drawings
FIG. 1 is a flowchart illustrating a method for estimating the reliability of A-GNSS server assisted positioning data according to a first embodiment of the present invention.
FIG. 2 is a flowchart illustrating a method for evaluating the integrity of A-GNSS server assisted positioning data according to a third embodiment of the present invention.
Fig. 3 is a flowchart illustrating a method for evaluating support capability of a-GNSS server for multiple assisted positioning technologies according to a fifth embodiment of the present invention.
Fig. 4 is a flowchart illustrating a method for evaluating the support capability of an a-GNSS server assisted positioning protocol and its extensions according to a seventh embodiment of the present invention.
Fig. 5 is a flowchart illustrating a method for evaluating availability of an a-GNSS server assisted positioning service according to a ninth embodiment of the present invention.
FIG. 6 is a block diagram illustrating a system for estimating the reliability of A-GNSS server assisted positioning data according to an eleventh embodiment of the present invention.
FIG. 7 is a block diagram of a system for evaluating integrity of A-GNSS server assisted positioning data according to a twelfth embodiment of the present invention.
Fig. 8 is a schematic structural diagram of a system for evaluating availability of an a-GNSS server assisted positioning service in a fifteenth embodiment of the present invention.
Detailed Description
In the following description, numerous technical details are set forth in order to provide a better understanding of the present application. However, it will be understood by those skilled in the art that the technical solutions claimed in the present application may be implemented without these technical details and with various changes and modifications based on the following embodiments.
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Term(s) for
As used herein, the term "GNSS" refers to global satellite positioning systems.
"A-GNSS" refers to assisted GNSS technology.
"SUPL" refers to a secure user plane interface.
In the embodiments of the present application, the positioning terminal virtual machine and the virtual terminal are equivalent concepts.
A first embodiment of the present invention relates to a method for estimating the reliability of aiding positioning data of an A-GNSS server, and FIG. 1 is a flow chart of the method.
As shown, in step 100, an assisted positioning request with known positioning assistance results is constructed.
Thereafter, step 101 is entered: and sending the auxiliary positioning request to an A-GNSS server.
Thereafter, step 102 is entered: the positioning assistance results fed back by the a-GNSS server are checked.
Thereafter, step 103 is entered: and comparing the positioning assistance result fed back by the A-GNSS server with the data of interest in the known positioning assistance result.
Then step 104 is entered: and judging whether the positioning assistance result fed back by the A-GNSS server is consistent with the data of interest in the known positioning assistance result, if so, executing the step 105, otherwise, executing the step 106.
In step 105, it is determined that the aiding data provided by the A-GNSS server is reliable.
In step 106, it is determined that the A-GNSS server provides the aiding data with unreliability.
In this embodiment, an assist positioning request with a known positioning assistance result is sent to the a-GNSS server, and the reliability of the assist positioning data provided by the a-GNSS server can be determined by determining whether the positioning assistance result fed back by the a-GNSS server matches the data of interest in the known positioning assistance result.
The second embodiment of the invention relates to a method for evaluating the reliability of the A-GNSS server auxiliary positioning data.
The method for evaluating the reliability of the auxiliary positioning data of the A-GNSS server in the embodiment comprises the following steps:
sending an auxiliary positioning request with a known positioning auxiliary result to the A-GNSS server through the positioning terminal virtual machine, wherein the step is the same as the step 101;
judging whether the positioning assistance result fed back by the A-GNSS server is consistent with the concerned data in the known positioning assistance result, which is the same as the step 104;
if the determined result is consistent with the determined result, the A-GNSS server determines that the provided aiding data is reliable, which is the same as step 105; otherwise, the aiding data provided by the A-GNSS server is determined to be unreliable, which is the same as step 106.
In this embodiment, the known positioning assistance result is determined according to the reference position, the reference time, the navigation ephemeris model, the ionosphere model, and the satellite ephemeris of the a-GNSS server, where:
(1) reference position: the rough location of the virtual terminal from which the request originated may be known.
(2) Reference time: the time at which the request was initiated.
(3) Navigation ephemeris model: when the positioning terminal positions in the area without the assistance of the A-GNSS, the selected satellite asterisk and the navigation ephemeris thereof which participate in positioning, and the accumulated empirical values comprise:
(a) visible satellites: the number of satellites participating in positioning and the satellite asterisks thereof.
(b) Information for each visible satellite: health, signal, clock error model, kepler parameters, etc.
(4) Ionosphere model: according to different regions and different moments, historical data are observed and accumulated for a long time.
(5) Satellite ephemeris: satellite ephemeris published by professional agencies.
The navigation ephemeris model and the ionosphere model are closely related to the position (time) of the terminal initiating the request, historical data need to be observed and accumulated for a long time according to the region (time), and the optimal navigation ephemeris model and ionosphere model data of the region, the time are selected by combining the accumulation of the navigation ephemeris model and the ionosphere model empirical values of common positioning.
A third embodiment of the present invention relates to a method for evaluating the integrity of aiding positioning data of an A-GNSS server, and FIG. 2 is a flow chart of the method.
In the present embodiment, a known a-GNSS server is designated in advance as a reference server.
As shown, in step 200, a connection is established with both the A-GNSS server and the reference server.
Thereafter, step 201 is entered: the same assisted positioning request is sent to both the target a-GNSS server and the reference server.
Thereafter, step 202 is entered: the positioning assistance results fed back by the a-GNSS server and the reference server are checked.
Thereafter step 203 is entered: and comparing the auxiliary information in the positioning auxiliary result fed back by the A-GNSS server with the auxiliary information in the positioning auxiliary result in the reference server.
Thereafter, step 204 is entered: and judging whether the auxiliary information in the positioning auxiliary result fed back by the A-GNSS server is consistent with the auxiliary information in the positioning auxiliary result in the reference server, if so, executing the step 205, otherwise, executing the step 206.
In step 205, the integrity of the aiding location information of the A-GNSS server is determined to be consistent with the reference server.
In step 206, it is determined whether the assistance information in the a-GNSS server contains assistance information in the reference server, if so, step 207 is performed, otherwise, step 208 is performed.
In step 207, the aiding data of the A-GNSS server is determined to be complete.
In step 208, it is determined that the A-GNSS server's aiding data is not complete.
In this embodiment, the same assistance-positioning request is sent to the target a-GNSS server and the reference server at the same time, and the integrity of the assistance-positioning data of the a-GNSS server can be determined by determining whether the assistance information in the positioning assistance result fed back by the a-GNSS server is consistent with the assistance information in the positioning assistance result in the reference server.
A fourth embodiment of the present invention relates to a method for evaluating the integrity of aiding position data of an A-GNSS server.
In this embodiment, a known a-GNSS server is pre-designated as a reference server, and the method for evaluating the integrity of the assisted positioning data of the a-GNSS server comprises the following steps:
sending the same auxiliary positioning request to the target A-GNSS server and the reference server simultaneously through the positioning terminal virtual machine, wherein the step is the same as the step 201;
determining whether the assistance information in the positioning assistance result fed back by the target a-GNSS server includes assistance information in the positioning assistance result in the reference server, which is the same as step 206;
if yes, determining that the aiding positioning data of the target A-GNSS server is complete, which is the same as step 207; otherwise, the aiding data of the target A-GNSS server is determined to be incomplete, which is the same as step 208.
A fifth embodiment of the present invention relates to a method for evaluating support capability of a-GNSS server for multiple assisted positioning technologies, and fig. 3 is a flowchart of the method.
As shown, in step 300, an assisted location request for all known location technologies is constructed.
Thereafter, step 301 is entered: and sending the auxiliary positioning request to an A-GNSS server.
Thereafter, step 302 is entered: the positioning assistance results fed back by the a-GNSS server are checked.
Thereafter, step 303 is entered: it is determined whether the positioning assistance result fed back by the a-GNSS server contains all positioning technologies in the assisted positioning request, if so, step 304 is performed, otherwise, step 305 is performed.
In step 304, it is determined that the A-GNSS server supports all of the positioning technologies.
In step 305, it is determined that the A-GNSS server supports a single or partial positioning technique.
In this embodiment, an assisted positioning request including all known positioning technologies is sent to the a-GNSS server, and the support capability of the a-GNSS server for multiple assisted positioning technologies can be examined by determining whether the positioning assistance result fed back by the a-GNSS server includes all positioning technologies in the assisted positioning request.
The sixth embodiment of the invention relates to a method for evaluating the supporting capability of a plurality of auxiliary positioning technologies of an A-GNSS server.
The method for evaluating the support capability of a plurality of auxiliary positioning technologies of the A-GNSS server in the embodiment comprises the following steps:
sending an auxiliary positioning request containing a plurality of auxiliary positioning technologies to a target A-GNSS server through a positioning terminal virtual machine, wherein the step is the same as the step 301;
determining whether the positioning assistance result fed back by the a-GNSS server includes all positioning technologies in the assistance-positioning request, which is the same as step 303;
if yes, then determine that the A-GNSS server supports all positioning technologies, which is the same as step 304; otherwise, it is determined that the a-GNSS server supports single or partial positioning technology, which is the same as step 305.
The seventh embodiment of the present invention relates to a method for evaluating the support capability of an a-GNSS server assisted positioning protocol and its extensions, and fig. 4 is a flowchart of the method.
As shown, in step 400, an auxiliary location request is constructed that includes different versions of the SUPL protocol/transport protocol.
Thereafter, step 401 is entered: and sending the auxiliary positioning request to an A-GNSS server.
Thereafter, step 402 is entered: the positioning assistance results fed back by the a-GNSS server are checked.
Thereafter, step 403 is entered: and comparing the positioning assistance result fed back by the A-GNSS server with the protocol type and version in the assisted positioning request.
Thereafter, step 404 is entered: and judging whether the positioning assistance result fed back by the A-GNSS server matches with the protocol type and version in the assisted positioning request, if so, executing the step 405, and otherwise, executing the step 406.
In step 405, it is determined that the A-GNSS server supports the current version of the protocol and extensions.
In step 406, it is determined that the A-GNSS server does not support the current version of the protocol and extensions.
In this embodiment, an assisted positioning request including different versions of SUPL protocols/transfer protocols is sent to the a-GNSS server, and the assisted positioning protocol of the a-GNSS server and its support capability of an extension item can be examined by determining whether the positioning assistance result fed back by the a-GNSS server matches the protocol type and version in the assisted positioning request.
The eighth embodiment of the invention relates to a method for evaluating the supporting capability of an A-GNSS server assisted positioning protocol and an extension item thereof.
The method for evaluating the supporting capability of the A-GNSS server assisted positioning protocol and the extension items thereof in the embodiment comprises the following steps:
transmitting an assisted positioning request to the target a-GNSS server through the positioning terminal virtual machine, the assisted positioning request including a plurality of assisted positioning request information of different SUPL versions and transport protocols and extension combinations, the same as step 401;
determining whether the positioning assistance result fed back by the a-GNSS server matches the protocol type and version in the assistance-positioning request, which is the same as step 404;
if yes, determining that the A-GNSS server supports the current version protocol and extension, which is the same as the step 405; otherwise, it is determined that the A-GNSS server does not support the current version of the protocol and extensions, which is the same as step 406.
A ninth embodiment of the present invention relates to a method for evaluating availability of an a-GNSS server assisted positioning service, and fig. 5 is a flowchart illustrating the method.
As shown, in step 500, a connection is established with a target A-GNSS server.
Thereafter, step 501 is entered: and judging whether the connection establishment with the target A-GNSS server is successful, if so, executing the step 502, otherwise, executing the step 506.
In step 506, it is determined that assisted positioning services provided by the A-GNSS server are not available.
In step 502, a service request is initiated to an A-GNSS server.
Thereafter, step 503 is entered: waiting for the A-GNSS server to respond.
Thereafter, step 504 is entered: and judging whether the A-GNSS server can respond correctly, if so, executing the step 505, otherwise, executing the step 506.
In step 505, it is determined that assisted-positioning services provided by an A-GNSS server are available.
In this embodiment, a service request is sent to the target a-GNSS server, and the availability of the a-GNSS server assisted positioning service can be determined by determining whether the a-GNSS server can respond correctly.
A tenth embodiment of the present invention is directed to a method for evaluating availability of an a-GNSS server assisted positioning service.
The method for evaluating the availability of the A-GNSS server assisted positioning service in the embodiment comprises the following steps:
establishing connection with a target A-GNSS server through a positioning terminal virtual machine, wherein the step is the same as the step 500;
initiating a service request to the A-GNSS server through the positioning terminal virtual machine, which is the same as the step 502;
if the A-GNSS server can respond correctly, determining that the assisted-positioning service provided by the A-GNSS server is available, which is the same as step 505; otherwise, it is determined that the assisted positioning service provided by the a-GNSS server is not available, which is the same as step 506.
An eleventh embodiment of the present invention relates to a system for estimating reliability of aiding positioning data of an A-GNSS server, and FIG. 6 is a schematic diagram of the system.
As shown in the figure, the system for estimating the reliability of the a-GNSS server assisted positioning data in the present embodiment includes:
the system comprises a sending unit, an A-GNSS server and a positioning terminal virtual machine, wherein the sending unit is used for sending an auxiliary positioning request with a known positioning auxiliary result to the A-GNSS server through the positioning terminal virtual machine;
the judging unit is used for judging whether the positioning assistance result fed back by the A-GNSS server is consistent with the concerned data in the known positioning assistance result or not; and if the A-GNSS positioning data provided by the A-GNSS server are consistent, judging that the auxiliary positioning data provided by the A-GNSS server is reliable, otherwise, judging that the auxiliary positioning data provided by the A-GNSS server is unreliable.
The second embodiment is a method embodiment corresponding to the present embodiment, and the present embodiment can be implemented in cooperation with the second embodiment. The related technical details mentioned in the second embodiment, such as the generation manner of the assisted positioning request of the known positioning assistance result, are still valid in the present embodiment, and are not described herein again in order to reduce the repetition. Accordingly, the related-art details mentioned in the present embodiment can also be applied to the second embodiment.
A twelfth embodiment of the present invention relates to a system for evaluating the integrity of aiding location data of an A-GNSS server, and FIG. 7 is a schematic diagram of the system.
In the present embodiment, a known a-GNSS server is designated in advance as a reference server.
As shown in the figure, the system for evaluating integrity of assistance-positioning data of an a-GNSS server in this embodiment includes:
the sending unit is used for sending the same auxiliary positioning request to the target A-GNSS server and the reference server simultaneously through the positioning terminal virtual machine;
a determining unit, configured to determine whether assistance information in a positioning assistance result fed back by the target a-GNSS server includes assistance information in a positioning assistance result in the reference server; if so, judging that the auxiliary positioning data of the target A-GNSS server is complete, otherwise, judging that the auxiliary positioning data of the target A-GNSS server is incomplete.
The fourth embodiment is a method embodiment corresponding to the present embodiment, and the present embodiment and the fourth embodiment can be implemented in cooperation with each other. The related technical details mentioned in the fourth embodiment are still valid in this embodiment, and are not described herein again in order to reduce repetition. Accordingly, the related-art details mentioned in the present embodiment can also be applied to the fourth embodiment.
A thirteenth embodiment of the present invention is directed to a system for evaluating support capabilities of a plurality of assisted positioning technologies of an a-GNSS server.
In this embodiment, the system for evaluating the support capability of a plurality of assisted positioning technologies of an a-GNSS server includes:
the system comprises a sending unit, a target A-GNSS server and a positioning terminal virtual machine, wherein the sending unit is used for sending an auxiliary positioning request containing a plurality of auxiliary positioning technologies to the target A-GNSS server through the positioning terminal virtual machine;
a determining unit, configured to determine whether a positioning assistance result fed back by the a-GNSS server includes all positioning technologies in the assistance-positioning request; if yes, the A-GNSS server is judged to support all positioning technologies, otherwise, the A-GNSS server is judged to support single or partial positioning technologies.
The sixth embodiment is a method embodiment corresponding to the present embodiment, and the present embodiment can be implemented in cooperation with the sixth embodiment. The related technical details mentioned in the sixth embodiment are still valid in this embodiment, and are not described herein again in order to reduce repetition. Accordingly, the related-art details mentioned in the present embodiment can also be applied to the sixth embodiment.
The fourteenth embodiment of the invention relates to a system for evaluating the supporting capability of an A-GNSS server assisted positioning protocol and its extension items.
In this embodiment, the system for evaluating the support capability of the a-GNSS server assisted positioning protocol and its extension includes:
a sending unit, configured to send an assisted positioning request to the target a-GNSS server through the positioning terminal virtual machine, where the assisted positioning request includes multiple assisted positioning request information of different SUPL versions and transport protocols and combinations of extensions;
a determining unit, configured to determine whether a positioning assistance result fed back by the a-GNSS server matches a protocol type and version in the assistance-positioning request; if so, judging that the A-GNSS server supports the current version protocol and the extension, otherwise, judging that the A-GNSS server does not support the current version protocol and the extension.
The eighth embodiment is a method embodiment corresponding to the present embodiment, and the present embodiment can be implemented in cooperation with the eighth embodiment. The related technical details mentioned in the eighth embodiment are still valid in this embodiment, and are not described herein again in order to reduce repetition. Accordingly, the related-art details mentioned in the present embodiment can also be applied to the eighth embodiment.
A fifteenth embodiment of the present invention relates to a system for evaluating availability of an a-GNSS server assisted positioning service, and fig. 8 is a schematic structural diagram of the system.
As shown in the figure, the system for evaluating availability of a-GNSS server assisted positioning service in this embodiment includes:
the connection unit is used for establishing connection with a target A-GNSS server through a positioning terminal virtual machine;
a sending unit, configured to initiate a service request to the a-GNSS server through the positioning terminal virtual machine;
the judging unit is used for judging whether the A-GNSS server can correctly respond; if so, determining that the assisted positioning service provided by the A-GNSS server is available, otherwise, determining that the assisted positioning service provided by the A-GNSS server is unavailable.
The tenth embodiment is a method embodiment corresponding to the present embodiment, and the present embodiment can be implemented in cooperation with the tenth embodiment. The related technical details mentioned in the tenth embodiment are still valid in this embodiment, and are not described herein again in order to reduce repetition. Accordingly, the related-art details mentioned in the present embodiment can also be applied to the tenth embodiment.
Through the five judgment/investigation standards, the service quality of the A-GNSS server can be evaluated, and finally, a service quality table of the A-GNSS server can be obtained:
TABLE 1A-GNSS Server service quality comprehensive assessment results
According to the data in the table, a comprehensive evaluation result is given from the aspects of service availability, reliability and integrity of the A-GNSS server, the support capability of various assisted positioning technologies and the protocol support capability, and a basis is provided for an end user to select the most appropriate and optimal A-GNSS server.
The technical scheme of the invention can monitor the service quality of the A-GNSS server for a long time and provide reference for timely adjusting the selection of the A-GNSS server.
In addition, the simulation terminal can simulate terminals in all parts of the world by sending different cell ids or rough position information, and the terminal initiates a positioning assistance request to the A-GNSS server according to a network system, an assistance data protocol and a version thereof supported by the terminal.
The method embodiments of the present invention can be implemented in software, hardware, firmware, etc. Whether the present invention is implemented as software, hardware, or firmware, the instruction code may be stored in any type of computer-accessible memory (e.g., permanent or modifiable, volatile or non-volatile, solid or non-solid, fixed or removable media, etc.). Also, in the same manner as above,
the Memory may be, for example, Programmable Array Logic ("PAL"), Random Access Memory ("RAM"), Programmable Read Only Memory ("PROM"), Read-Only Memory ("ROM"), Electrically Erasable Programmable Read Only Memory ("EEPROM"), magnetic disks, optical disks, Digital Versatile disks ("DVD"), or the like.
It should be noted that, in each device embodiment of the present invention, each module is a logic module, and physically, one logic module may be one physical module, or may be a part of one physical module, or may be implemented by a combination of multiple physical modules, and the physical implementation manner of the logic modules itself is not the most important, and the combination of the functions implemented by the logic modules is the key to solve the technical problem provided by the present invention. Furthermore, in order to highlight the innovative part of the present invention, the above-mentioned embodiments of the device of the present invention do not introduce modules which are not so closely related to solve the technical problems proposed by the present invention, which does not indicate that there are no other modules in the above-mentioned embodiments of the device.
It is noted that, in the specification of the present patent, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the use of the verb "comprise a" to define an element does not exclude the presence of another, same element in a process, method, article, or apparatus that comprises the element.
While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
Claims (4)
1. A method for assessing a-GNSS server quality of service comprising the steps of:
sending an auxiliary positioning request with a known positioning auxiliary result to an A-GNSS server through a positioning terminal virtual machine; judging whether the positioning assistance result fed back by the A-GNSS server is consistent with the concerned data in the known positioning assistance result; if the positioning data are consistent with the positioning data provided by the A-GNSS server, judging that the auxiliary positioning data provided by the A-GNSS server are reliable, otherwise, judging that the auxiliary positioning data provided by the A-GNSS server are unreliable;
a known A-GNSS server is appointed as a reference server in advance, and the same auxiliary positioning request is sent to a target A-GNSS server and the reference server simultaneously through a positioning terminal virtual machine; judging whether the auxiliary information in the positioning auxiliary result fed back by the target A-GNSS server contains the auxiliary information in the positioning auxiliary result in the reference server; if so, judging that the auxiliary positioning data of the target A-GNSS server is complete, otherwise, judging that the auxiliary positioning data of the target A-GNSS server is incomplete;
sending an auxiliary positioning request containing a plurality of auxiliary positioning technologies to a target A-GNSS server through a positioning terminal virtual machine; judging whether the positioning assistance result fed back by the A-GNSS server contains all positioning technologies in the assistance positioning request; if yes, the A-GNSS server is judged to support all positioning technologies, otherwise, the A-GNSS server is judged to support single or partial positioning technologies;
sending an assisted positioning request to a target A-GNSS server through a positioning terminal virtual machine, wherein the assisted positioning request comprises a plurality of assisted positioning request information of different SUPL versions and transmission protocols and extension item combinations; judging whether the positioning assistance result fed back by the A-GNSS server is matched with the protocol type and version in the assistance positioning request; if so, judging that the A-GNSS server supports the current version protocol and the extension, otherwise, judging that the A-GNSS server does not support the current version protocol and the extension;
establishing connection with a target A-GNSS server through a positioning terminal virtual machine; initiating a service request to the A-GNSS server through the positioning terminal virtual machine; and if the A-GNSS server can respond correctly, determining that the assisted positioning service provided by the A-GNSS server is available, otherwise, determining that the assisted positioning service provided by the A-GNSS server is unavailable.
2. The method of claim 1, wherein the step of sending an assisted positioning request with known positioning assistance result to the a-GNSS server via the positioning terminal virtual machine further comprises the steps of:
continuously receiving GNSS signals at a reference position by using a positioning terminal without A-GNSS assistance, and acquiring the number of satellites participating in positioning, the star number of the satellites, the health degree of each visible satellite, signals, a clock error model and Kepler parameters from the received GNSS signals to serve as navigation ephemeris model accumulated data, wherein the continuous time for continuously receiving the GNSS signals is greater than a preset threshold, and the distance between the reference position and the position where the positioning terminal virtual machine initiates the request is less than a preset threshold;
dividing a region covering the reference position into a plurality of sub-regions, continuously detecting ionosphere model data of each sub-region, and recording the ionosphere model data of each sub-region changing along with time as ionosphere model accumulated data, wherein the continuous detection duration is longer than a preset threshold;
obtaining matched navigation ephemeris model and ionospheric model data from the navigation ephemeris model accumulated data and the ionospheric model accumulated data according to the reference position and the reference time, wherein the reference time is the time for initiating the request;
and taking the reference position, the reference time, the satellite ephemeris, the matched navigation ephemeris model and the ionosphere model data as a known positioning assistance result, and generating an auxiliary positioning request of the known positioning assistance result according to the known positioning assistance result.
3. A system for assessing a-GNSS server quality of service, comprising:
the system comprises a sending unit, an A-GNSS server and a positioning terminal virtual machine, wherein the sending unit is used for sending an auxiliary positioning request with a known positioning auxiliary result to the A-GNSS server through the positioning terminal virtual machine;
the judging unit is used for judging whether the positioning assistance result fed back by the A-GNSS server is consistent with the concerned data in the known positioning assistance result or not; if the positioning data are consistent with the positioning data provided by the A-GNSS server, judging that the auxiliary positioning data provided by the A-GNSS server are reliable, otherwise, judging that the auxiliary positioning data provided by the A-GNSS server are unreliable;
the system comprises a sending unit, a positioning terminal virtual machine and a reference server, wherein the sending unit is used for sending the same auxiliary positioning request to a target A-GNSS server and the reference server at the same time through the positioning terminal virtual machine, and the reference server is a pre-designated known A-GNSS server;
the judging unit is further configured to judge whether assistance information in the positioning assistance result fed back by the target a-GNSS server includes assistance information in the positioning assistance result in the reference server; if so, judging that the auxiliary positioning data of the target A-GNSS server is complete, otherwise, judging that the auxiliary positioning data of the target A-GNSS server is incomplete;
the sending unit is also used for sending an auxiliary positioning request containing a plurality of auxiliary positioning technologies to the target A-GNSS server through the positioning terminal virtual machine;
the judging unit is further configured to judge whether the positioning assistance result fed back by the a-GNSS server includes all positioning technologies in the assistance positioning request; if yes, the A-GNSS server is judged to support all positioning technologies, otherwise, the A-GNSS server is judged to support single or partial positioning technologies;
a sending unit, further configured to send an assisted positioning request to the target a-GNSS server through the positioning terminal virtual machine, where the assisted positioning request includes multiple assisted positioning request information of different SUPL versions and transport protocols and combinations of extensions;
the judging unit is further used for judging whether the positioning assistance result fed back by the A-GNSS server matches the protocol type and version in the assistance positioning request; if so, judging that the A-GNSS server supports the current version protocol and the extension, otherwise, judging that the A-GNSS server does not support the current version protocol and the extension;
the connection unit is used for establishing connection with a target A-GNSS server through a positioning terminal virtual machine;
the sending unit is further used for initiating a service request to the A-GNSS server through the positioning terminal virtual machine;
the judging unit is also used for judging whether the A-GNSS server can correctly respond; if so, determining that the assisted positioning service provided by the A-GNSS server is available, otherwise, determining that the assisted positioning service provided by the A-GNSS server is unavailable.
4. The system of claim 3, wherein the known position fix assistance result is determined from a reference position, a reference time, a navigation ephemeris model, an ionosphere model, and a satellite ephemeris of the A-GNSS server.
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| CN109063500A (en) * | 2018-07-31 | 2018-12-21 | 佛山市甜慕链客科技有限公司 | A kind of system for data safety |
| CN112068162A (en) * | 2020-09-11 | 2020-12-11 | 司南信通(北京)科技有限公司 | Automatic testing system and method for AGNSS positioning service performance of terminal |
| CN116648631A (en) * | 2021-03-24 | 2023-08-25 | Oppo广东移动通信有限公司 | Communication method and device |
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