CN100584086C - Processing method of emergency calling positioning service - Google Patents
Processing method of emergency calling positioning service Download PDFInfo
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- CN100584086C CN100584086C CN200610061890A CN200610061890A CN100584086C CN 100584086 C CN100584086 C CN 100584086C CN 200610061890 A CN200610061890 A CN 200610061890A CN 200610061890 A CN200610061890 A CN 200610061890A CN 100584086 C CN100584086 C CN 100584086C
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Abstract
The invention discloses a method for positioning the emergency calls, in which, it is inquired whether the current WCDMA system and the adjacent different systems as well support AGPS positioning method when the positioning service about the emergency calls is established, and poisons the emergency calls according to the results of inquiries. Thus, it ensures the response-time for the positioning about the emergency calls with a great positioning accuracy to ensure Qos of this service effectively.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to the positioning service in the wireless communication field.
Background technology
In WCDMA (Wideband Code Division Multiple Access (WCDMA)) mobile communication system, have the localization method of three kinds of standards: AGPS (the GPS localization method of network assistance), OTDOA (observed time difference) and CELLID+RTT (center of housing estate location).The positioning time of each localization method, difference is very big, and the positioning time of AGPS method, between 10～30 seconds, the positioning time of OTDOA method, between 0.5～2 second, the positioning time in the CELLID+RTT method was greatly between 0.1～0.5 second greatly greatly.The positioning accuracy of each localization method has nothing in common with each other, and in general, the positioning accuracy of AGPS is the highest, and OTDOA takes second place, and the positioning accuracy of CELLID+RTT is the poorest.But, different geographical environment (as: open environment, block environment or indoor environment), the positioning accuracy of each localization method is widely different, exist seriously block or indoor environment under, the positioning accuracy of AGPS seriously descends, even can fail and cause AGPS to locate owing to search for less than enough satellites.And because the cell coverage area under this situation is generally all smaller, the positioning accuracy of CELLID+RTT method can be better than the positioning accuracy of AGPS on the contrary; The positioning accuracy of OTDOA method is under this environment, general then between the positioning accuracy of CELLID+RTT and the positioning accuracy of AGPS.
The QoS attribute evaluation standard of positioning service specifically comprises two aspects: positioning accuracy and location response time.Positioning accuracy is by application drives, and is relevant with network design, also different required precisions can be arranged according to the diverse location of different situations in network.The location response time for position requests immediately, has defined following delay requirement again, specifically comprises:
No delay: require server to return the current any location estimation information that has;
Low delay: require to be placed on than satisfying the high status of positioning accuracy and to consider, just will at first satisfy the qos requirement of location response time satisfying the location response time;
Delay tolerant: require to be placed on than satisfying high status of location response time and to consider, just will at first satisfy the qos requirement of positioning accuracy satisfying positioning accuracy.
Generally for positioning service, the positioning result of hope is: the positioning accuracy height, simultaneously the response time the fastest.But the two opposes to a certain extent, and the positioning service that is therefore provided need be done a balance between the two, and the both is negotiable qos parameter, as to urgency traffic, and just should fast as far as possible responding.
The wireless emergency call business that " WIRELESS ENHANCED EMERGENCY SERVICES " representative strengthens, this professional purpose is when user's emergency call, can obtain user position information, thereby obtains relief in time.
Operator is divided into two stage: PhaseI and PhaseII to the realization of this business.PhaseI utilizes existing equipment, and signaling realizes rough location, can navigate to the rank of cell/section; PhaseII utilizes location technologies such as AGPS, realizes accurate location positioning.At present, operator disposes and has finished the deployment in PhaseI stage, is implementing the deployment in PhaseII stage.
Each state has all proposed codes and standards separately at urgent call.On the qos requirement of positioning service, various countries' standard there is no great difference, all is to require to obtain high-precision as far as possible positioning result in the short as far as possible time.In 3GPP 22.071,23.271, all emergency calling position service has been carried out corresponding description, also require in the short as far as possible time, to obtain high-precision as far as possible positioning result and give the client, this client validated user whether no matter, no matter whether the client is in Home PLMN (Public Land Mobile Nerwork) still is in roaming.
The treatment principle of general positioning service is to obtain location information of terminals, trigger the single position fixing process as the positioning control request message (Location Reporting Control) that issues according to core network, and in the single position fixing process because the restriction of UE state when being in common channel state such as CELL_FACH, CELL_PCH, URA_PCH, might need to move to CELL_DCH or CELL_FACH state.
For emergency calling position service, what at first require guarantee is the response speed of time, secondly just requires positioning accuracy.This has just proposed higher requirement to the WCDMA system, carries out emergency calling position service, and UE must be in the CELL_DCH state, also is in order to guarantee emergency calling position service QoS.
For the positioning service handling process of emergency call user initiation and the positioning service handling process of domestic consumer's initiation, flow process is identical, specific as follows from the angle of radio network controller (RNC) (Radio Network Controller):
Step S10, core net CN initiate the positioning control request;
Step S11～S13, RNC preferentially select high-precision localization method AGPS to position processing, judge whether success of location, if locate successfully, and restoring to normal position result then, flow process end; Otherwise execution in step S14;
Step S14～S16, RNC select OTDOA to position processing, judge whether success of location, if locate successfully, and restoring to normal position result then, flow process end; Otherwise execution in step S17;
Step S17, RNC select CELLID+RTT to position and handle also restoring to normal position result.
Both differences are, be set to Emergency Services for the customer type in the emergence call service request type and get final product, but agreement also allows to use other customer type.
Because positioning service belongs to a kind of value-added service, domestic consumer will use positioning service, must buy legal License to obtain the location-based service of different accuracy; And for emergency calling position service, then do not need to buy License and just can obtain high-precision location-based service.That is to say that at WCDMA network support emergency calling position service, and the professional switch of emergency call location also opens, and then for the emergency call location user, can freely use high-precision location-based service business.
From the above, emergency calling position service is except being provided with of customer type distinguished to some extent with the positioning service of domestic consumer, and its handling process is just the same.The handling process of current emergency calling position service can not guarantee the QoS that this is professional.
Summary of the invention
In view of this, the invention provides a kind of processing method of emergency calling position service, on the basis that guarantees the response time, guarantee positioning accuracy as far as possible, improve the QoS of emergency calling position service.
A kind of processing method of emergency calling position service, inquire about current WCDMA system when setting up emergency calling position service and whether support the AGPS localization method, it is characterized in that, send Query Information simultaneously to the adjacent different system, inquire about described adjacent different system and whether support the AGPS localization method, if being the current WCDMA support AGPS of system localization method, adjacent different system, Query Result do not support the AGPS localization method, then in current WCDMA system, set up emergency calling position service, utilize the AGPS localization method to position processing;
If the current WCDMA employing AGPS of system method is located successfully, then the restoring to normal position result; Otherwise
In current WCDMA system, adopt the OTDOA method to position processing, if locate successfully, restoring to normal position result then; Otherwise
In current WCDMA system, adopt the CELLID+RTT method to position processing, the restoring to normal position result.
Or a kind of processing method of emergency calling position service, inquire about current WCDMA system when setting up emergency calling position service and whether support the AGPS localization method, it is characterized in that, send Query Information simultaneously to the adjacent different system, inquire about described adjacent different system and whether support the AGPS localization method, if being current WCDMA system, Query Result do not support AGPS localization method, adjacent different system to support the AGPS localization method, then initiate different system switching flow, switch to described adjacent different system, in the adjacent different system, set up urgent positioning service, utilize AGPS promptly to locate;
If adopt the AGPS method to locate successfully in the described adjacent different system,, restoring to normal position result then; Otherwise
If location failure or different system handoff failure, then come back in the described current WCDMA system, and adopt the OTDOA method to position processing, if locate successfully, restoring to normal position result then; Otherwise
In current WCDMA system, adopt the CELLID+RTT method to position processing, the restoring to normal position result.
Or a kind of processing method of emergency calling position service, inquire about current WCDMA system when setting up emergency calling position service and whether support the AGPS localization method, it is characterized in that, send Query Information simultaneously to the adjacent different system, inquire about described adjacent different system and whether support the AGPS localization method, system does not support AGPS localization method and adjacent different system not to support the AGPS localization method if Query Result is current WCDMA; Then
Set up emergency calling position service in current WCDMA system, adopt the OTDOA method to position processing, if locate successfully, restoring to normal position result then; Otherwise
In current WCDMA system, adopt the CELLID+RTT method to position processing, the restoring to normal position result.
Or a kind of processing method of emergency calling position service, inquire about current WCDMA system when setting up emergency calling position service and whether support the AGPS localization method, it is characterized in that, send Query Information simultaneously to the adjacent different system, inquire about described adjacent different system and whether support the AGPS localization method, system supports AGPS localization method and adjacent different system to support the AGPS localization method if Query Result is current WCDMA; Then
Set up emergency calling position service in current WCDMA system, utilize the AGPS localization method to position processing, if locate successfully, restoring to normal position result then; Otherwise
Initiate different system and switch, in described adjacent different system, set up emergency calling position service, adopt the AGPS localization method to position processing;
If in described adjacent different system, adopt the AGPS method to locate successfully, then the restoring to normal position result; Otherwise
If failure of AGPS location or different system handoff failure in the different system, then come back in the described current WCDMA system, and adopt the OTDOA method to position processing, if locate successfully, restoring to normal position result then; Otherwise
In current WCDMA system, adopt the CELLID+RTT method to position processing, the restoring to normal position result.
Preferable, the switching of the different system of described initiation is specially:
Initiate blind switching or pass through the initiation of adjacent different systematic survey based on the switching that covers.
Preferable, the system of described adjacent different system for switching mutually with the WCDMA system, comprise following any one: gsm system, gprs system, EDGE system.Or comprise: cdma system.Or comprise CDMA2000, TD-SCDMA system.
From the above, because the location that technical scheme of the present invention has adopted the highest AGPS of positioning accuracy to carry out urgent call as far as possible, on the basis that guarantees the location response time, improve the positioning accuracy of emergency calling position service, improved the QoS of emergency calling position service.
Description of drawings
The handling process of emergency calling position service in Fig. 1, the prior art;
Fig. 2, according to the flow chart of a specific embodiment of the present invention.
Embodiment
For make purpose of the present invention, technical scheme, and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in more detail.
As shown in Figure 2, in the present embodiment, be that example specifically describes with the emergency calling position service handling process of UE under the WCDMA system, specifically may further comprise the steps:
Whether step S100, the current WCDMA system of detection and adjacent different system support the AGPS localization method.
After current WCDMA system receives the emergency calling position service request, core net CN issues the positioning reporting control messages and gives RNC, RNC receives and at first judges whether current WCDMA system supports the AGPS localization method after the described message, simultaneously, RNC sends Query Information to the adjacent different system, inquires about described adjacent different system and whether supports the AGPS localization method.
For emergency calling position service, need its location response time of assurance, obtain high orientation precision as far as possible, so, in the present embodiment, by checking whether current WCDMA system and adjacent different system support the AGPS localization method, use the AGPS localization method to carry out the location of emergency calling position service like this, as far as possible to guarantee its positioning accuracy.
The adjacent different system after receiving the Query Information that described RNC sends by self inspection then to the RNC feedback query information response of described current WCDMA system, inform the support situation of RNC adjacent different system to the AGPS localization method.
Step S101, set up emergency calling position service, position processing.
According to the result of RNC inquiry among the step S100, promptly whether support according to current WCDMA system whether AGPS localization method and adjacent different system support the AGPS localization method to set up emergency calling position service, specifically be divided into following four kinds of situations:
Situation 1, the current WCDMA support AGPS of system localization method, adjacent different system do not support AGPS foot method for position;
In step S100, detect current WCDMA system and support the AGPS localization method, then in current WCDMA system, set up emergency calling position service, utilize the AGPS localization method to position processing; If locate successfully, restoring to normal position result then, flow process end; Otherwise, if location failure, do not support the AGPS localization method because detected the adjacent different system, whether then inquire about current WCDMA system supports the OTDOA method to position, if support, continue to use the OTDOA method to carry out the processing of emergency calling position service, if locate successfully, restoring to normal position result then, flow process finishes; Otherwise, if location failure or inquiring current WCDMA system does not support the OTDOA method to position, whether then inquire about current WCDMA system supports the CELLID+RTT method to position, if support, then in native system, continue to use the CELLID+RTT method to carry out the processing and the restoring to normal position result of emergency calling position service.
In this case, because the adjacent different system does not support the AGPS localization method,, even under the worse situation, need to use the CELLID+RTT method position processing so failure back, AGPS location just continues to use OTDOA in current WCDMA system.
Situation 2, current WCDMA system do not support AGPS localization method, adjacent different system to support the AGPS localization method;
In step S100, detect current WCDMA system and do not support the AGPS localization method, but the adjacent different system supports the AGPS localization method, then, for the better positioning accuracy that guarantees emergency calling position service, initiate different system switching flow, switch to described adjacent different system, in the adjacent different system, set up urgent positioning service, utilize AGPS promptly to locate; A kind of execution mode preferably, here, the described adjacent different system that switches to adopts blind switching or utilizes isosystem measurement to initiate to switch based on the different system that covers.
If different system handover success, then in described adjacent different system, set up emergency calling position service, utilize the AGPS localization method to position, if locate successfully, restoring to normal position result then, process ends; If location failure or different system handoff failure, then come back in the former current WCDMA system, whether inquire about current WCDMA system supports the OTDOA method to position, if support, continue to use the OTDOA method to carry out the processing of emergency calling position service, if locate successfully, restoring to normal position result then, flow process end; Otherwise, if location failure or inquiring current WCDMA system does not support the OTDOA method to position, whether then inquire about current WCDMA system supports the CELLID+RTT method to position, if support, then in native system, continue to use the CELLID+RTT method to carry out the processing and the restoring to normal position result of emergency calling position service.
In this case, because current WCDMA system does not support the AGPS localization method but the adjacent different system supports the AGPS localization method, so, in order to guarantee the positioning accuracy of emergency calling position service as far as possible, just switch in the adjacent different system that supports the AGPS localization method and go, utilize the AGPS localization method to carry out the localization process of emergency calling position service; Because different system handoff failure may occur or locate unsuccessful situation, so when different system handoff failure or in described adjacent different system under the unsuccessful situation in location, come back in the described current WCDMA system and continue to position processing with the OTDOA method, even under the worse situation, need to use the CELLID+RTT method to position processing, so not only guaranteed the response time of its location but also can farthest guarantee its positioning accuracy.
Situation 3, current WCDMA system do not support AGPS localization method, adjacent different system not to support the AGPS localization method yet;
If in step S100, do not support the AGPS localization method if detect current WCDMA system, the adjacent different system does not support the AGPS localization method yet, then, whether inquire about current WCDMA system supports the OTDOA method to position, if support, continue to use the OTDOA method to carry out the processing of emergency calling position service, if locate successfully, restoring to normal position result then, flow process finishes; Otherwise, if location failure or inquiring current WCDMA system does not support the OTDOA method to position, whether then inquire about current WCDMA system supports the CELLID+RTT method to position, if support, then in native system, continue to use the CELLID+RTT method to carry out the processing and the restoring to normal position result of emergency calling position service.
Situation 4, the current WCDMA support AGPS of system localization method, adjacent different system also support the AGPS localization method;
In step S100, support the AGPS localization method if detect current WCDMA system, the adjacent different system also supports the AGPS localization method simultaneously, then, directly in current WCDMA system, set up emergency calling position service, adopt the AGPS localization method to position processing, if locate successfully, restoring to normal position result then, process ends;
If in current WCDMA system, use the failure of AGPS localization method location, then,, initiate different system switching flow and switch in the adjacent different system that supports the AGPS localization method and go in order to guarantee better positioning accuracy.A kind of execution mode preferably, here, the described adjacent different system that switches to adopts blind switching or utilizes isosystem measurement to initiate to switch based on the different system that covers.After switching to described adjacent different system, in the adjacent different system, set up emergency calling position service, utilize the AGPS localization method to position processing, if locate successfully, restoring to normal position result then, process ends;
If handoff failure or in the adjacent different system, utilize the location failure of AGPS method, then come back in the described current WCDMA system, whether inquire about current WCDMA system supports the OTDOA method to position, if support, continue to use the OTDOA method to carry out the processing of emergency calling position service, if locate successfully, restoring to normal position result then, flow process end; Otherwise, if location failure or inquiring current WCDMA system does not support the OTDOA method to position, whether then inquire about current WCDMA system supports the CELLID+RTT method to position, if support, then in native system, continue to use the CELLID+RTT method to carry out the processing and the restoring to normal position result of emergency calling position service.
Here, the system of described adjacent different system for switching mutually with the WCDMA system, as gsm system, gprs system, the EDGE system, cdma system, CDMA2000 or TD-SCDMA system etc., when these systems also support the AGPS localization method, in order to guarantee the positioning accuracy of emergency calling position service as far as possible, guarantee the QoS of emergency calling position service, then, when current WCDMA system wouldn't support the AGPS localization method or use the AGPS localization method to carry out the localization process failure of emergency calling position service in current WCDMA system, then by initiating blind switching or switching to based on the switching that isosystem measurement is initiated in the adjacent different system of described support AGPS localization method and in described adjacent different system, utilize the AGPS localization method to position processing based on covering.It has been prior art that described different system is switched, and is not the emphasis that the present invention pays close attention to, so do not give unnecessary details at this.
Like this, the technical scheme of present embodiment is handled emergency calling position service by as much as possible adopting the AGPS localization method, to reach the purpose that the response time that guarantees emergency calling position service, can obtain higher positioning accuracy again, the QoS of the effective emergency calling position service that guarantees.
Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect have been carried out further detailed description; institute is understood that; the above only is specific embodiments of the invention; not in order to restriction the present invention; within the spirit and principles in the present invention all, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1, a kind of processing method of emergency calling position service, inquire about current WCDMA system when setting up emergency calling position service and whether support the AGPS localization method, it is characterized in that, send Query Information simultaneously to the adjacent different system, inquire about described adjacent different system and whether support the AGPS localization method, if being the current WCDMA support AGPS of system localization method, adjacent different system, Query Result do not support the AGPS localization method, then in current WCDMA system, set up emergency calling position service, utilize the AGPS localization method to position processing;
If the current WCDMA employing AGPS of system method is located successfully, then the restoring to normal position result; Otherwise
In current WCDMA system, adopt the 0TDOA method to position processing, if locate successfully, restoring to normal position result then; Otherwise
In current WCDMA system, adopt the CELLID+RTT method to position processing, the restoring to normal position result.
2, the method for claim 1 is characterized in that, the system of described adjacent different system for switching mutually with the WCDMA system comprises: gsm system, gprs system or EDGE system;
Or the system of described adjacent different system for switching mutually with the WCDMA system, comprising: cdma system;
Or the system of described adjacent different system for switching mutually with the WCDMA system, comprising: CDMA2000 or TD-SCDMA system.
3, a kind of processing method of emergency calling position service, inquire about current WCDMA system when setting up emergency calling position service and whether support the AGPS localization method, it is characterized in that, send Query Information simultaneously to the adjacent different system, inquire about described adjacent different system and whether support the AGPS localization method, if being current WCDMA system, Query Result do not support AGPS localization method, adjacent different system to support the AGPS localization method, then initiate different system switching flow, switch to described adjacent different system, in the adjacent different system, set up urgent positioning service, utilize AGPS promptly to locate;
If adopt the AGPS method to locate successfully in the described adjacent different system, then the restoring to normal position result; Otherwise
If location failure or different system handoff failure, then come back in the described current WCDMA system, and adopt the 0TDOA method to position processing, if locate successfully, restoring to normal position result then; Otherwise
In current WCDMA system, adopt the CELLID+RTT method to position processing, the restoring to normal position result.
4, method as claimed in claim 3 is characterized in that, the switching of the different system of described initiation is specially:
Initiate blind switching or pass through the initiation of adjacent different systematic survey based on the switching that covers.
As claim 3 or 4 described methods, it is characterized in that 5, the system of described adjacent different system for switching mutually with the WCDMA system comprises: gsm system, gprs system or EDGE system;
Or the system of described adjacent different system for switching mutually with the WCDMA system, comprising: cdma system;
Or the system of described adjacent different system for switching mutually with the WCDMA system, comprising: CDMA2000 or TD-SCDMA system.
6, a kind of processing method of emergency calling position service, inquire about current WCDMA system when setting up emergency calling position service and whether support the AGPS localization method, it is characterized in that, send Query Information simultaneously to the adjacent different system, inquire about described adjacent different system and whether support the AGPS localization method, system does not support AGPS localization method and adjacent different system not to support the AGPS localization method if Query Result is current WCDMA; Then set up emergency calling position service, adopt the 0TDOA method to position processing in current WCDMA system, if locate successfully, restoring to normal position result then; Otherwise
In current WCDMA system, adopt the CELLID+RTT method to position processing, the restoring to normal position result.
7, method as claimed in claim 6 is characterized in that, the system of described adjacent different system for switching mutually with the WCDMA system comprises: gsm system, gprs system or EDGE system;
Or the system of described adjacent different system for switching mutually with the WCDMA system, comprising: cdma system;
Or the system of described adjacent different system for switching mutually with the WCDMA system, comprising: CDMA2000 or TD-SCDMA system.
8, a kind of processing method of emergency calling position service, inquire about current WCDMA system when setting up emergency calling position service and whether support the AGPS localization method, it is characterized in that, send Query Information simultaneously to the adjacent different system, inquire about described adjacent different system and whether support the AGPS localization method, system supports AGPS localization method and adjacent different system to support the AGPS localization method if Query Result is current WCDMA; Then
Set up emergency calling position service in current WCDMA system, utilize the AGPS localization method to position processing, if locate successfully, restoring to normal position result then; Otherwise
Initiate different system and switch, in described adjacent different system, set up emergency calling position service, adopt the AGPS localization method to position processing;
If in described adjacent different system, adopt the AGPS method to locate successfully, then the restoring to normal position result; Otherwise
If failure of AGPS location or different system handoff failure in the different system, then come back in the described current WCDMA system, and adopt the 0TDOA method to position processing, if locate successfully, restoring to normal position result then; Otherwise
In current WCDMA system, adopt the CELLID+RTT method to position processing, the restoring to normal position result.
9, method as claimed in claim 8 is characterized in that, the switching of the different system of described initiation is specially:
Initiate blind switching or pass through the initiation of adjacent different systematic survey based on the switching that covers.
10, method as claimed in claim 8 or 9 is characterized in that, the system of described adjacent different system for switching mutually with the WCDMA system comprises: gsm system, gprs system or EDGE system;
Or the system of described adjacent different system for switching mutually with the WCDMA system, comprising: cdma system;
Or the system of described adjacent different system for switching mutually with the WCDMA system, comprising: CDMA2000 or TD-SCDMA system.
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| CN102056113A (en) * | 2009-11-04 | 2011-05-11 | 中兴通讯股份有限公司 | Method and base station for processing emergency service switching |
| CN101915933A (en) * | 2010-08-17 | 2010-12-15 | 中兴通讯股份有限公司 | Method and device for assisting global positioning system to position |
| CN102026133B (en) * | 2010-12-30 | 2014-04-16 | 华为技术有限公司 | Emergency call processing method, device and system |
| CN103313300B (en) * | 2012-03-13 | 2016-11-16 | 电信科学技术研究院 | The method and apparatus obtaining positional information during MDT |
| CN104378731A (en) * | 2013-08-12 | 2015-02-25 | 中兴通讯股份有限公司 | Blind switching or blind redirection method and system and associated equipment |
| US10476263B2 (en) | 2015-12-31 | 2019-11-12 | Novatek Microelectronics Corp. | Device and operation method for electrostatic discharge protection |
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| WCDMA系统中移动台的定位及其应用. 姚乐平.无线电工程，第34卷第3期. 2004 |
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