CN1837845A - A-GPS positioning method and system - Google Patents
A-GPS positioning method and system Download PDFInfo
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- CN1837845A CN1837845A CNA2005100569329A CN200510056932A CN1837845A CN 1837845 A CN1837845 A CN 1837845A CN A2005100569329 A CNA2005100569329 A CN A2005100569329A CN 200510056932 A CN200510056932 A CN 200510056932A CN 1837845 A CN1837845 A CN 1837845A
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Abstract
This invention relates to an A-GPS positioning method and system. The A-GPS receiver on RNC continual receives GPS satellite signal to extract and send GPS time to the SMLC module for time calibration; when received navigation request, the SMLC builds and sends GPS auxiliary information to user terminal according to GPS time, received original information and user subzone position; terminal completes pseudo-range measurement by the received information and reports the result to the SMLC; the latter obtains the user terminal position. This invention improves A-GPS navigation precision.
Description
Technical field
The present invention relates to the gps satellite positioning field, particularly a kind of A-GPS localization method and system.
Background technology
Network assistance GPS (network-assisted Global Positioning System, A-GPS) belong to third generation partner program (3th Generation Partner Projection, standard setting method 3GPP), this method are a kind of technology that network base station information and GPS information position user terminal that combines.
The A-GPS location architectures of 3GPP definition as shown in Figure 1, this system comprises the gps satellite system, disposed gps signal receives with the user terminal (UE) of processing module, base station (Node B), is configured in A-GPS receiver, radio network controller (RNC), mobile location service center (SMLC) module on RNC, mobile switching centre (MSC), mobile positioning center gateway (GMLC) and location services client (LCS Client) on the Node B.Wherein the gps satellite system is meant the GPS of America satellite network; Node B, RNC, MSC are the basic structural unit of 3G network, form wireless network and control thereof; The A-GPS receiver is the GPS receiver that receives gps satellite signal from the gps satellite system; UE is the user terminal that is positioned, and the positioning equipment that uses on mobile phone, the bus etc. for example, the gps signal on the UE receive with processing module can realize UE to the catching of gps satellite signal, and the distance that calculates between UE and the gps satellite is a pseudorange; GMLC, LCS Client are the equipment that use the A-GPS location, GMLC is a gateway, comprise whether UE user enjoys information such as A-GPS positioning service, LCS Client can handle the UE positional information that is positioned, and for example inquires about the position relevant information such as street, public transport of UE position periphery.Wherein transmit data by Iub interface between Node B and the RNC, by over-the-air message (Uu) interface transmission data, transmit data by the Iu interface between RNC and the MSC between UE and the Node B; The A-GPS receiver that is configured on the Node B is issued Node B to GPS raw information and gps time, and Node B passes to SMLC module on the RNC by Iub interface then.
With reference to figure 2, the detailed process of the A-GPS localization method of 3GPP definition is as follows:
Step 201 is to step 202, the A-GPS receiver at Node B place continues to receive gps satellite signal, therefrom extract gps time, GPS raw information promptly not the GPS information of decoding issue Node B, wherein GPS raw information comprises the contents such as position coordinates, ephemeris, year calendar, synchronization code sequence of gps satellite.Node B sends to SMLC module on the RNC by Iub interface with GPS raw information, gps time then, and the SMLC module is preserved these required relevant GPS information in A-GPS location.
Step 203 when needs are located UE, is initiated Location Request, perhaps other Event triggered Location Request by UE.Narrate as location requestors with UE below, and the SMLC module is obtaining behind the UE position relevant information being sent to UE.
Step 204 after the SMLC module receives Location Request, sends to UE according to constructing only GPS supplementary from the subdistrict position at gps time, the GPS raw information of the A-GPS receiver at Node B place and the UE place known.Described GPS supplementary comprises gps time, is no less than information such as the position coordinates of 4 visible gps satellites, ephemeris, synchronization code sequence, and these information can help the gps signal of UE to receive the time of catching gps satellite with the processing module shortening.It is consistent with the time of gps satellite system in theory that the SMLC module sends to the gps time of UE, and the gps time calibration that this gps time provides according to the A-GPS receiver for correlation module among the RNC obtains.
Step 205, the gps signal of UE receives the GPS supplementary that sends over according to the SMLC module with processing module, catch the gps satellite that is not less than 4 fast, receive GPS information, as gps satellite position coordinates, signal sending time, year calendar, ephemeris etc., thereby finish pseudo range measurement, promptly calculate UE and the gps satellite of being caught between distance.
The roughly process of pseudo range measurement is: UE extracts the moment T that this information sends from gps satellite from the GPS information that receives
Send, and know the current time T of UE self time when receiving this message
Receive, T so
ReceiveWith T
SendDifference and the product of the light velocity be exactly the distance of UE and gps satellite, that is: the distance of UE and gps satellite=(T
Receive-T
Send) * the light velocity.
UE self time is to calibrate according to the gps time that the SMLC module sends.If the gps time from the SMLC module is inaccurate, can cause pseudorange inaccurate, thereby the UE position of causing the back to come out according to its computation of pseudoranges is inaccurate.
Step 206, the gps signal of UE receive with processing module the pseudorange that calculates are transferred to the Node B of sub-district, place by the Uu interface, report SMLC module on the RNC by Node B by Iub interface then.
The UE that step 207, SMLC module report according to UE and the pseudorange of satellite, and ephemeris of the gps satellite that has obtained in conjunction with the SMLC module, year calendar etc. are finished the calculating of UE position, and are utilized differential GPS (DGPS) information that the UE position is calibrated.The SMLC module has just obtained the position of the UE after the calibration like this, and the precision of this position is that the bearing accuracy of A-GPS probably is 50 meters.
Step 208 is to 209, the SMLC module is issued LCS Client with the UE position, LCS Client is according to the concrete location dependent information of UE position enquiring, as the present place of UE street, near public transport, hotel, market etc., LCS Client sends to RNC to these location dependent informations then, and RNC sends to UE to these information by Node B again.Certainly the SMLC module also can directly send to UE by RNC, Node B with the UE position.
From prior art as can be seen, the gps time delivering path is: the A-GPS receiver that is configured in Node B extracts gps time from gps satellite signal, the A-GPS receiver sends to Node B to gps time then, Node B sends to the SMLC module of RNC to gps time by Iub interface again, and the SMLC module is calibrated the gps time of self in view of the above.Because Node B and RNC long transmission distance, the transmission medium complexity, therefore Node B can't in time pass to SMLC module on the RNC to the time of gps satellite system, causes the hysteresis of SMLC place gps time and inaccurate, further causes the A-GPS locating accuracy relatively poor.
Summary of the invention
In view of this, one object of the present invention is to have proposed a kind of A-GPS localization method, another object of the present invention is to provide a kind of A-GPS positioning system, in order to provide the accurate GPS time to the SMLC module, improves the A-GPS locating accuracy.
According to above-mentioned purpose, the invention provides a kind of A-GPS localization method, on radio network controller (RNC), dispose the A-GPS receiver in advance, this method may further comprise the steps:
A. the A-GPS receiver that is configured on the RNC continues to receive gps satellite signal, therefrom extracts gps time and sends to mobile location service center SMLC module; The SMLC module receives gps time and GPS raw information;
B. after the SMLC module receives Location Request to user terminal,, and send described GPS supplementary to user terminal according to gps time, GPS raw information and user terminal place subdistrict position structure GPS supplementary;
C. user terminal is finished pseudo range measurement according to the described GPS supplementary that receives, and described pseudorange is reported the SMLC module;
The D.SMLC module obtains user terminal location according to described its computation of pseudoranges.
The step that the module of SMLC described in the steps A receives GPS raw information is: the SMLC module receives from the gps time that is configured in the A-GPS receiver on the base station node B, or the SMLC module receives from the gps time that is pre-configured in the A-GPS receiver on the described RNC.
Further comprise the step of SMLC module after the step D according to differential GPS information correction user terminal location.
Further comprise the step that user terminal location is sent to location requestors after the step D.
Further may further comprise the steps after the step D: the SMLC module sends to location services client LCS Client with described user terminal location; LCS Client is according to described user terminal location, the corresponding informance of inquiring user terminal location, and the corresponding informance of described user terminal location sent to location requestors.
Described location requestors is a user terminal.
The step that further comprises the GPS raw information that the preservation of SMLC module is received after the steps A.
Preferably, configuration the 2nd A-GPS receiver on RNC when the receiver of A-GPS described in steps A fault, switches to described the 2nd A-GPS receiver and provides gps time to the SMLC module in advance.
A-GPS receiver on the described RNC of being configured in comprises to the step that the SMLC module sends gps time: the A-GPS receiver on the described RNC of being configured in sends to gps time the main control module of RNC; Main control module sends to the SMLC module with gps time.
The present invention also provides a kind of A-GPS of being used for the system of location, and this system comprises: the gps satellite system; Be used to receive and dispatch the Node B from the data of user terminal or RNC, described Node B is connected with RNC by Iub interface; Be used to receive and dispatch RNC from the data of Node B; And being used on the RNC finish the SMLC module of located in connection function; This system further comprises the A-GPS receiver that is configured on the RNC, is used for receiving gps satellite signal and therefrom extracting gps time and send to described SMLC module from the gps satellite system.
A-GPS receiver on the described RNC of being configured in also is used for extracting GPS raw information and sending to described SMLC module from the gps satellite signal that is received.
This system further comprises the A-GPS receiver that is configured on the Node B, is used for extracting GPS raw information and sending to described SMLC module from gps satellite system reception gps satellite signal and from described gps satellite signal.
Preferably, this system further comprises the 2nd A-GPS receiver that is configured on the RNC, and being used for provides gps time to the SMLC module when described A-GPS receiver fault.
This system further comprises location services client LCS Client, and described LCS Client is used for the corresponding informance according to user terminal location inquiring user terminal location.
From such scheme as can be seen, the present invention is by having disposed the A-GPS receiver at the RNC place, by the A-GPS receiver at RNC place gps time directly is sent to SMLC module on the RNC, thereby make the SMLC module can accurately obtain gps time, its error has improved the A-GPS locating accuracy at Millisecond.Through actual measurement, reach 5～10 meters according to the bearing accuracy of A-GPS localization method of the present invention.Further, the invention provides multiplely provides the method for GPS raw information to the SMLC module, can guarantee the SMLC module GPS raw information that upgrades in time, guarantees the A-GPS locating accuracy.
Description of drawings
Fig. 1 is the A-GPS location architectures synoptic diagram of 3GPP definition;
Fig. 2 is existing A-GPS localization method process flow diagram;
Fig. 3 is the structural representation of A-GPS receiver in RNC;
Fig. 4 is according to A-GPS location architectures synoptic diagram of the present invention;
Fig. 5 is the process flow diagram according to first embodiment of the invention;
Fig. 6 is the process flow diagram according to second embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in more detail by the following examples.
The present invention has disposed the A-GPS receiver on RNC, this A-GPS receiver continues to receive gps satellite signal, and therefrom extract gps time, GPS raw information, and GPS raw information and gps time directly can be transferred to the SMLC module, guarantee to provide the gps time of pin-point accuracy to the SMLC module.Fig. 3 has provided the structural representation of this A-GPS receiver in RNC, comprises gps antenna, GPS receiver, clock module, main control module, SMLC module among the figure.Wherein gps antenna and GPS receiver composition gps signal receiving system is the A-GPS receiver, be responsible for receiving gps satellite signal, carry out relevant treatment, and by high-speed channel to the clock module of RNC output gps clock signal, and by high-speed channel to the main control module output GPS of RNC raw information, DGPS information and gps time; Clock module guarantees that as the timing reference input of RNC each module of RNC and gps clock are synchronous; The main control module of RNC is responsible for carrying out the processing and the gps time distribution of GPS raw information, and gives other module by high-speed channel with information synchronization, as the SMLC module; The SMLC module is finished the located in connection function.
Owing to disposed the A-GPS receiver at the RNC place, so not essential at the A-GPS receiver at Node B place.If dispose the A-GPS receiver at Node B place, can provide GPS raw information to the SMLC module by the A-GPS receiver at RNC place so, also can provide GPS raw information to the SMLC module by the A-GPS receiver at Node B place, but no matter any situation, all be that the A-GPS receiver by the RNC place provides gps time to the SMLC module.
What Fig. 4 provided is according to A-GPS system architecture synoptic diagram of the present invention, and this system comprises the gps satellite system, disposed gps signal receives with the UE of processing module, Node B, RNC, in the SMLC module on the RNC, is configured in A-GPS receiver, MSC, GMLC and LCSClient on the RNC.Wherein the gps satellite system is meant the GPS of America satellite network; Node B, RNC, MSC are the basic structural unit of 3G network, form wireless network and control thereof; A-GPS receiver on the RNC is the GPS receiver that receives gps satellite signal from the gps satellite system; UE is the user terminal that is positioned, and the positioning equipment that uses on mobile phone, the bus etc. for example, the gps signal on the UE receive with processing module can realize UE to the catching of gps satellite signal, and the distance that calculates between UE and the gps satellite is a pseudorange; GMLC, LCS Client are the equipment that use the A-GPS location, GMLC is a gateway, comprise whether UE user enjoys information such as A-GPS positioning service, and LCS Client can handle the UE positional information that is positioned, for example inquire about the geography information such as street, public transport of UE position periphery.Can further dispose the A-GPS receiver on the Node B, be used to receive gps satellite signal.Transmit data by Iub interface between Node B and the RNC in the system, transmit data by the Uu interface between UE and the Node B; The A-GPS receiver that is configured on the Node B can be issued Node B to the GPS raw information that receives, and Node B passes to the SMLC module of RNC by Iub interface then; The A-GPS receiver that is configured on the RNC can directly be transferred to SMLC module on the RNC by high-speed channel with the gps time that receives and GPS raw information.
With reference to figure 5, as follows according to the A-GPS localization method flow process of first embodiment of the invention:
Step 501 is to 504, and the A-GPS receiver at RNC place and Node B place continues to receive gps satellite signal.The A-GPS receiver at RNC place extracts gps time and GPS raw information from the gps satellite signal that receives, and directly gps time is transferred to the SMLC module by high-speed channel.The A-GPS receiver at Node B place extracts gps time and GPS raw information from the gps satellite signal that receives, and GPS raw information is sent to SMLC module on the RNC by Node B by Iub interface.The SMLC module is preserved these required relevant GPS information in A-GPS location.
Step 505 when needs are located UE, is initiated Location Request, perhaps other Event triggered Location Request by UE.Narrate as location requestors with UE below, and obtain behind the UE position relevant information being sent to UE in the SMLC module.
Step 506 after the SMLC module receives this Location Request, is constructed only GPS supplementary according to the subdistrict position at gps time, GPS raw information and the UE place known and is sent to UE.Described GPS supplementary comprises gps time, is no less than information such as the position coordinates of 4 visible satellites, ephemeris, synchronization code sequence, these information can help the gps signal of UE to receive with processing module to shorten the time of catching gps satellite, and this gps time is that the A-GPS receiver by the RNC place provides.
Step 507, the gps signal of UE receives the GPS supplementary that sends over according to the SMLC module with processing module, catch gps satellite fast, described gps satellite generally is not less than 4, receive GPS information, as gps satellite position coordinates, signal sending time, year calendar, ephemeris etc., thereby finish pseudo range measurement, promptly calculate the distance between the gps satellite of UE and its tracking.
Step 508, the gps signal of UE receive with processing module the pseudorange that calculates are reported the Node B of sub-district, place by the Uu interface, report SMLC module on the RNC by Node B by Iub interface then.
The UE that step 509, SMLC module report according to UE and the pseudorange of satellite, and ephemeris of the gps satellite that obtains in conjunction with the SMLC module, year calendar etc. are finished the calculating of UE position, and are utilized DGPS information to calibrate.The SMLC module has just obtained the position of the UE after the calibration like this.
Step 510 is to step 511, the SMLC module is issued LCS Client with the UE position, LCS Client is according to the concrete location dependent information of UE position enquiring, as the present place of UE street, near public transport, hotel, market etc., LCS Client sends to RNC to these location dependent informations then, and RNC sends UE to these information again.Certainly, the SMLC module also can directly send to UE with the UE position.
In first embodiment, A-GPS receiver by Node B place provides GPS raw information to the SMLC module, because this A-GPS receiver need send to the SMLC module by Iub interface with GPS raw information by Node B, in Iub resource anxiety, will make the renewal of GPS raw information of SMLC module be affected.Therefore the present invention proposes second embodiment, in a second embodiment, provide GPS raw information to the SMLC module by the A-GPS receiver at RNC place.In addition, because first embodiment provides GPS raw information, second embodiment to provide GPS raw information by the A-GPS at RNC place by the A-GPS at Node B place, therefore first embodiment is to be the reference point of A-GPS location with Node B, and second embodiment is to be the reference point of A-GPS location with RNC.
With reference to Fig. 6, the flow process of second embodiment of the invention is as follows:
Step 601 is to 602, and the A-GPS receiver at RNC place continues to receive gps satellite signal, and therefrom extracts gps time and GPS raw information, directly gps time and GPS raw information is transferred to the SMLC module by high-speed channel then.The SMLC module is preserved these required relevant GPS information in A-GPS location.
Further, can obtain reliably in order to guarantee the A-GPS relevant information that positioning service needs, can also be at 2 A-GPS receivers of RNC place configuration, with active/standby mode work.One of them provides gps time and GPS raw information with A-GPS receiver operate as normal to the SMLC module as main, and another is as standby A-GPS receiver; When the master broke down with the A-GPS receiver, standby A-GPS receiver was worked with A-GPS as new master, provides gps time and GPS raw information to the SMLC module.
Step 603 when needs are located UE, is initiated Location Request by UE as location requestors.
Step 604 after the SMLC module receives this Location Request, is constructed only GPS supplementary according to the subdistrict position at gps time, GPS raw information and the UE place known and is sent to UE.Described GPS supplementary comprises gps time, is no less than information such as the position coordinates of 4 visible satellites, ephemeris, synchronization code sequence, and these information can help the gps signal of UE to receive the time of catching gps satellite with the processing module shortening.
Step 605, the gps signal of UE receives the GPS supplementary that sends over according to the SMLC module with processing module, catch gps satellite fast, described gps satellite generally is not less than 4, receive GPS information, as gps satellite position coordinates, signal sending time, year calendar, ephemeris etc., thereby finish pseudo range measurement, promptly calculate the distance between the gps satellite of UE and its tracking.
Step 606, the gps signal of UE receive with processing module the pseudorange that calculates are reported the Node B of sub-district, place by the Uu interface, report SMLC module on the RNC by Node B by Iub interface then.
The UE that step 607, SMLC module report according to UE and the pseudorange of satellite, and ephemeris of the gps satellite that obtains in conjunction with the SMLC module, year calendar etc. are finished the calculating of UE position, and are utilized DGPS information to calibrate.The SMLC module has just obtained the position of the UE after the calibration like this.
Step 608 is to step 609, the SMLC module is issued LCS Client with the UE position, LCS Client is according to the concrete location dependent information of UE position enquiring, as the present place of UE street, near public transport, hotel, market etc., LCS Client sends to RNC to these location dependent informations then, and RNC sends UE to these information again.Equally, SMLC also can directly send to UE with the UE position.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (14)
1, a kind of A-GPS localization method is characterized in that, disposes the A-GPS receiver in advance on radio network controller (RNC), and this method may further comprise the steps:
A. the A-GPS receiver that is configured on the RNC continues to receive gps satellite signal, therefrom extracts gps time and sends to mobile location service center SMLC module; The SMLC module receives gps time and GPS raw information;
B. after the SMLC module receives Location Request to user terminal,, and send described GPS supplementary to user terminal according to gps time, GPS raw information and user terminal place subdistrict position structure GPS supplementary;
C. user terminal is finished pseudo range measurement according to the described GPS supplementary that receives, and described pseudorange is reported the SMLC module;
The D.SMLC module obtains user terminal location according to described its computation of pseudoranges.
2, method according to claim 1 is characterized in that, the step that the module of SMLC described in the steps A receives GPS raw information is:
The SMLC module receives from the gps time that is configured in the A-GPS receiver on the base station node B, or
The SMLC module receives from the gps time that is pre-configured in the A-GPS receiver on the described RNC.
3, method according to claim 1 is characterized in that, further comprises the step of SMLC module according to differential GPS information correction user terminal location after the step D.
4, method according to claim 1 is characterized in that, further comprises the step that user terminal location is sent to location requestors after the step D.
5, method according to claim 1 is characterized in that, further may further comprise the steps after the step D:
The SMLC module sends to location services client LCS Client with described user terminal location;
LCS Client is according to described user terminal location, the corresponding informance of inquiring user terminal location, and the corresponding informance of described user terminal location sent to location requestors.
According to claim 4 or 5 described methods, it is characterized in that 6, described location requestors is a user terminal.
7, method according to claim 1 is characterized in that, further comprises the step of the GPS raw information that the preservation of SMLC module is received after the steps A.
8, method according to claim 1 is characterized in that, configuration the 2nd A-GPS receiver on RNC when the receiver of A-GPS described in steps A fault, switches to described the 2nd A-GPS receiver and provides gps time to the SMLC module in advance.
9, method according to claim 1 is characterized in that, the A-GPS receiver on the described RNC of being configured in comprises to the step that the SMLC module sends gps time: the A-GPS receiver on the described RNC of being configured in sends to gps time the main control module of RNC; Main control module sends to the SMLC module with gps time.
10, a kind of system that is used for the A-GPS location, this system comprises:
The gps satellite system;
Be used to receive and dispatch the Node B from the data of user terminal or RNC, described Node B is connected with RNC by Iub interface;
Be used to receive and dispatch RNC from the data of Node B;
And being used on the RNC finish the SMLC module of located in connection function;
It is characterized in that this system further comprises the A-GPS receiver that is configured on the RNC, be used for receiving gps satellite signal and therefrom extracting gps time and send to described SMLC module from the gps satellite system.
11, system according to claim 10 is characterized in that, the A-GPS receiver on the described RNC of being configured in also is used for extracting GPS raw information and sending to described SMLC module from the gps satellite signal that is received.
12, system according to claim 10, it is characterized in that, this system further comprises the A-GPS receiver that is configured on the Node B, is used for extracting GPS raw information and sending to described SMLC module from gps satellite system reception gps satellite signal and from described gps satellite signal.
13, system according to claim 10 is characterized in that, this system further comprises the 2nd A-GPS receiver that is configured on the RNC, and being used for provides gps time to the SMLC module when described A-GPS receiver fault.
14, system according to claim 10 is characterized in that, this system further comprises location services client LCS Client, and described LCS Client is used for the corresponding informance according to user terminal location inquiring user terminal location.
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| CNA2005100569329A CN1837845A (en) | 2005-03-23 | 2005-03-23 | A-GPS positioning method and system |
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| CNA2005100569329A CN1837845A (en) | 2005-03-23 | 2005-03-23 | A-GPS positioning method and system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101470188B (en) * | 2007-12-26 | 2011-06-15 | 陈澎 | Movable positioning system and method |
| WO2011069400A1 (en) * | 2009-12-11 | 2011-06-16 | 惠州Tcl移动通信有限公司 | Method for realizing assisted global position system (a-gps) by personal computer (pc) |
| CN101210963B (en) * | 2006-12-29 | 2011-07-13 | 佛山市顺德区顺达电脑厂有限公司 | Position location system and its control method |
| CN102215558A (en) * | 2010-04-07 | 2011-10-12 | 中国科学院国家天文台 | Ground mobile communication network positioning method assisted by communication broadcast satellite signal |
| CN101615946B (en) * | 2008-06-26 | 2012-09-05 | 展讯通信（上海）有限公司 | Method and device for calibrating GPS standard time in TD-SCDMA system |
| CN111345079A (en) * | 2017-11-16 | 2020-06-26 | 索尼公司 | Arrangement for responding to failure in transmitting position assistance information |
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2005
- 2005-03-23 CN CNA2005100569329A patent/CN1837845A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101210963B (en) * | 2006-12-29 | 2011-07-13 | 佛山市顺德区顺达电脑厂有限公司 | Position location system and its control method |
| CN101470188B (en) * | 2007-12-26 | 2011-06-15 | 陈澎 | Movable positioning system and method |
| CN101615946B (en) * | 2008-06-26 | 2012-09-05 | 展讯通信（上海）有限公司 | Method and device for calibrating GPS standard time in TD-SCDMA system |
| WO2011069400A1 (en) * | 2009-12-11 | 2011-06-16 | 惠州Tcl移动通信有限公司 | Method for realizing assisted global position system (a-gps) by personal computer (pc) |
| CN101718872B (en) * | 2009-12-11 | 2012-11-28 | 惠州Tcl移动通信有限公司 | Method for realizing A-GPS by PC |
| US8626199B2 (en) | 2009-12-11 | 2014-01-07 | Huizhou Tcl Mobile Communication Co., Ltd. | Method for PC to realize A-GPS |
| CN102215558A (en) * | 2010-04-07 | 2011-10-12 | 中国科学院国家天文台 | Ground mobile communication network positioning method assisted by communication broadcast satellite signal |
| CN102215558B (en) * | 2010-04-07 | 2013-09-25 | 中国科学院国家天文台 | Ground mobile communication network positioning method assisted by communication broadcast satellite signal |
| CN111345079A (en) * | 2017-11-16 | 2020-06-26 | 索尼公司 | Arrangement for responding to failure in transmitting position assistance information |
| US11343789B2 (en) | 2017-11-16 | 2022-05-24 | Sony Corporation | Arrangement for responding to a failure in the communication of the position assistance information |
| CN111345079B (en) * | 2017-11-16 | 2022-08-09 | 索尼公司 | Arrangement for responding to failure in transmitting position assistance information |
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