CN103002571A - LMUs (location measurement units), selection method of LMUs and E-SMLC (evolved serving mobile location center) - Google Patents
LMUs (location measurement units), selection method of LMUs and E-SMLC (evolved serving mobile location center) Download PDFInfo
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Abstract
The invention provides LMUs (location measurement units), a selection method of the LMUs, and an E-SMLC (evolved serving mobile location center). The selection method includes: allowing the E-SMLC to acquire status information and configuration information of the LMUs; and allowing the E-SMLC to select the LMUs involved in positioning according to the status information and the configuration information. The E-SMLC provides reference for accurate selection of the LMUs involved in positioning by acquiring the status and configuration information of the LMUs, so that the performance of a whole positioning system is improved.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of Serving Mobile Location Center of system of selection, location measurement unit and evolution of location measurement unit.
Background technology
Along with the development of information technology, the user is growing for the demand based on the business of location technology.Upstream data poor (the Uplink-Time difference of Arrival time of advent, UTDOA) locate mode is based on a kind of locate mode of network side, this kind location technology is to target UE (the User Equipment of positioning action, UE) do not have special requirement, the operation of side Network Based can be finished the location for object UE.Figure 1 shows that a plane positioning schematic diagram based on UTDOA mechanism, in order to finish determining of plan position approach, need at least 3 location measurement unit (Location Measurement Unit, LMU) participate in positioning action, succinct in order hereinafter to describe, schematic diagram to the object UE positioning action is finished in being with 3 LMU of describing in the diagram 1.Wherein, the geographical position coordinates (X of LMUi (i=1,2,3)
i, Y
i) be known, the purpose of location mechanism is the geographical position coordinates (X, Y) of knowing object UE.When the up location reference signals of object UE transmission arrives LMUi, LMU
iRecord the time t that signal arrives
i, after 3 LMU have finished the up location reference signals of the record difference time of advent, can calculate by following computing formula the physical location (X, Y) of object UE:
Can see that from top description the signal of UTDOA navigation system receives and corresponding processing calculating all is to finish at network side, does not have specific requirement for UE, even can accomplish UE transparent.Do not rely on the characteristic that UE can finish positioning action exactly because the UTDOA technology is this, finish based on the UTDOA technology location mechanism of subscriber equipment in the network is introduced by multiple beehive network system.
Fig. 2 is a kind of possible network element connection diagram after the introducing UTDOA mechanism in the LTE system, wherein the major function born of LMU is: 1) configuration based on the Serving Mobile Location Center (Evolved Serving Mobile Location Center, E-SMLC) of evolution receives the up location reference signals that UE sends; 2) to E-SMLC feedback measurement report; E-SMLC is the center control service network element of control Location based service in the system, and its major function of bearing is: 1) accept the positioning service demand; 2) the configuration object UE sends up location reference signals; 3) selection participates in the LMU of positioning action, configuration management LMU; 4) measurement report of reception LMU is finished the calculating in object UE geographical position; 5) reply location of user equipment to positioning service party in request.MME is the mobile management net element in the LTE system, and the major function of bearing in the UTDOA positioning action is: 1) send the positioning service demand to E-SMLC; 2) receive the geographical location information of final object UE.
As shown in Figure 2, there are two kinds of eNB.The first is the service eNB (serving eNB) of object UE, and its function of mainly bearing is: 1) receive the positioning action configuration needs that E-SMLC sends, and and then configuration purpose mark UE send the upward signal that satisfies condition based on location requirement; 2) will return to E-SMLC for the configuration result of object UE.The eNB that also has a kind of LMU of being associated with in the system.Different based on the incidence relation of eNB and LMU can be divided into aforementioned LMU following two kinds again further:
(1.Stand-alone independent exist) LMU, this kind LMU and eNB may the shared radio frequency front end antennas; As shown in 2 shown in the a-1, LPPa connecting interface between eNB and the E-SMLC cannot be used alternately between this kind LMU and the E-SMLC, new SLm connecting interface need to be rebulid;
2.Associated LMU, this kind LMU and eNB may share radio function module (radio apparatus) and radio-frequency front-end antenna; Shown in the a-2 among Fig. 2, can use alternately LPPa (Location Positioning Protocol Appendix) interface between eNB and the E-SMLC between this kind LMU and the E-SMLC, also can rebulid new SLm connecting interface;
In the navigation system of introducing UTDOA mechanism, reasonably selecting suitable LMU is the first step of the positioning action of completion system demand, thus need to allow system can be exactly in real time state and the configuration information of LMU in the supervisory control system.But also do not have ripe method to finish E-SMLC to the monitoring of LMU state and configuration information in the existing LTE system, thereby cause E-SMLC can't select suitable LMU, and and then cause UTDOA mechanism can't be incorporated into the LTE system.
Summary of the invention
Main purpose of the present invention is to provide a kind of Serving Mobile Location Center of system of selection, location measurement unit and evolution of location measurement unit, does not also have ripe method to finish E-SMLC to the problem of LMU state and configuration information monitoring to solve at least in the above-mentioned existing LTE system.
According to an aspect of the present invention, provide the system of selection of a kind of LMU, having comprised: E-SMLC obtains state information and the configuration information of LMU; The LMU that E-SMLC selects to participate in positioning action according to state information and the configuration information of LMU.
Preferably, E-SMLC obtains state information and the configuration information of LMU, comprise: E-SMLC obtains state information and the configuration information of LMU by system's Supporting connectivity interface, wherein, it is one of following that system's Supporting connectivity interface comprises at least: the LTE location protocol between SLm connecting interface, E-SMLC and the base station between E-SMLC and the LMU strengthens the LPPa connecting interface, wherein the base station of base station for being associated with LMU.
Preferably, state information comprises one of following: LMU is in normal operating conditions, LMU and is in that abnormality, LMU are in the resource full load condition, LMU is in down state.
Preferably, configuration information comprises one of following at least: the geographical location information of the working frequency information of LMU, the timing information of LMU, LMU.
Preferably, E-SMLC with SLm connecting interface between the LMU is: that sets up between E-SMLC and the LMU is carried on the connecting interface that LPPa is connected; Or set up between E-SMLC and the LMU be carried on connecting interface on transparent the connection, wherein, transparent connection does not rely on LPPa and connects.
Preferably, E-SMLC obtains state information and the configuration information of LMU by system's Supporting connectivity interface, comprise: LMU periodically triggers and reports that by SLm connecting interface or LPPa connecting interface its state information and configuration information are to E-SMLC, wherein, state information is that LMU is in normal operating conditions; Configuration information comprises: the working frequency information of LMU and/or timing information and/or geographical location information; Perhaps, LMU event ground triggers and reports its state information and configuration information to E-SMLC by SLm connecting interface or LPPa connecting interface, and wherein, state information comprises: LMU is in resource and is fully loaded with or is in disabled state; Configuration information comprises: the working frequency information of LMU and/or timing information and/or geographical location information; Perhaps, the base station event ground that is associated with LMU trigger and by the LPPa connecting interface with the status information reporting of LMU to E-SMLC, wherein, state information is that LMU is in abnormality; Perhaps, after LMU receives the request for location services of E-SMLC, report its state information to E-SMLC based on SLm connecting interface or LPPa connecting interface, wherein, state information comprises: LMU is in normal operation or resource is fully loaded or disabled state.
Preferably, E-SMLC obtains state information and the configuration information of location measurement unit LMU, comprise: LMU comprises its state information in sending to the measurement report of E-SMLC, wherein state information comprises: LMU is in normal operation or resource is fully loaded or disabled state.
Preferably, E-SMLC selects to participate in the LMU of positioning action according to state information and configuration information, comprising: E-SMLC selects the LMU that meets the following conditions as the LMU that participates in positioning action: be in normal operating conditions and support the object UE upward signal send employed frequency and/meet the timing accuracy requirement and/meet the LMU of systematic geography status requirement.
Preferably, E-SMLC does not receive the state information from LMU in the given time, judges that then LMU is in abnormality.
According to a further aspect in the invention, provide a kind of E-SMLC, having comprised: acquisition module, for the state information and the configuration information that obtain location measurement unit LMU; Select module, be used for the LMU according to state information and configuration information selection participation positioning action.
Preferably, acquisition module also is used for obtaining by system's Supporting connectivity interface state information and the configuration information of LMU, wherein system's Supporting connectivity interface comprise following one of at least: the LTE location protocol between SLm connecting interface, E-SMLC and the base station between E-SMLC and the LMU strengthens the LPPa connecting interface, wherein the base station of base station for being associated with LMU.
Preferably, acquisition module comprises: first obtains submodule, is used for obtaining the state information that comprises LMU that LMU periodically triggers and the report of configuration information by SLm connecting interface or LPPa connecting interface, and wherein, state information is that LMU is in normal condition; Configuration information comprises: the working frequency information of LMU and/or timing information and/or geographical location information.
Preferably, acquisition module comprises: second obtains submodule, be used for obtaining the state information that comprises LMU of LMU event ground triggering and the report of configuration information by SLm connecting interface or LPPa connecting interface, wherein, state information comprises: LMU is in the fully loaded or disabled state of resource; Configuration information comprises: the working frequency information of LMU and/or timing information and/or geographical location information.
Preferably, acquisition module comprises: the 3rd obtains submodule, is used for obtaining by the LPPa interface report that comprises the LMU state information of the base station event ground triggering that is associated with LMU, and wherein, state information is that LMU is in abnormality.
Preferably, select module also to be used for: to select the LMU that meets the following conditions as the LMU that participates in positioning action: be in normal operating conditions and support the object UE upward signal send employed frequency and/meet the timing accuracy requirement and/meet the LMU of systematic geography status requirement.
According to a further aspect of the invention, a kind of LMU is provided, comprise: reporting module is used for the Serving Mobile Location Center E-SMLC that state information and configuration information with LMU report to evolution, so that E-SMLC selects to participate in the LMU of positioning action according to state information and configuration information.
Preferably, reporting module comprises: first reports submodule, be used for by SLm connecting interface or LPPa connecting interface report reporting that LMU is periodically triggered, that comprise state information and configuration information to E-SMLC, wherein, state information is that LMU is in normal condition; Configuration information comprises: the working frequency information of LMU and/or timing information and/or geographical location information.
Preferably, reporting module also comprises: second reports submodule, be used for by SLm connecting interface or LPPa connecting interface LMU event ground being triggered, comprise that the report reporting of state information and configuration information is to E-SMLC, wherein, state information comprises: LMU is in the fully loaded or disabled state of resource; Configuration information comprises: the working frequency information of LMU and/or timing information and/or geographical location information.
In the present invention, state and the configuration information of E-SMLC by obtaining LMU, thus for accurately selecting the LMU that participates in positioning action, E-SMLC provides reference, and and then reach the effect that improves whole navigation system performance.
Description of drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, consists of the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is the UTDOA schematic diagram of mechanism according to correlation technique;
Fig. 2 is the network structure of introducing UTDOA mechanism according to the LTE system of correlation technique;
Fig. 3 is the system of selection flow chart according to the LMU of the embodiment of the invention;
Fig. 4 is the flow chart that participates in the LMU of positioning action according to the selection of the embodiment of the invention one;
Fig. 5 is the flow chart that participates in the LMU of positioning action according to the gravity treatment of the embodiment of the invention two;
Fig. 6 is the flow chart that participates in the LMU of positioning action according to the gravity treatment of the embodiment of the invention three;
Fig. 7 is the flow chart that participates in the LMU of positioning action according to the gravity treatment of the embodiment of the invention four;
Fig. 8 is the E-SMLC structured flowchart according to the embodiment of the invention five;
Fig. 9 is the E-SMLC structured flowchart according to the embodiment of the invention six;
Figure 10 is the LMU structured flowchart according to the embodiment of the invention seven.
Embodiment
Hereinafter also describe in conjunction with the embodiments the present invention in detail with reference to accompanying drawing.Need to prove that in the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
Fig. 3 is the system of selection flow chart according to the LMU of the embodiment of the invention.As shown in Figure 3, may further comprise the steps:
Step S302, E-SMLC obtain state information and the configuration information of LMU;
Step S304, E-SMLC select to participate in the LMU of positioning action according to state information and configuration information.
In the present embodiment, state and the configuration information of E-SMLC by obtaining LMU, thus for accurately selecting the LMU that participates in positioning action, E-SMLC provides reference, and and then improve the performance of whole navigation system.
In step S302, E-SMLC obtains location measurement unit state and configuration information based on system's supporting interface.Wherein, system's supporting interface comprises: the SLm interface between E-SMLC and the location measurement unit, the LTE location protocol between E-SMLC and the base station strengthens (LTE Positioning Protocol, LPPa) interface.The location measurement unit state information comprises: location measurement unit is normal, and the location measurement unit resource is fully loaded, and location measurement unit is current unavailable, and location measurement unit is unusual; The location measurement unit configuration information comprises: the working frequency information of location measurement unit and/or timing information and/or geographical location information;
Wherein, the SLm interface comprises: that sets up between the Serving Mobile Location Center of evolution and the location measurement unit is carried on the interface that LPPa is connected; That sets up between the Serving Mobile Location Center of evolution and the location measurement unit is carried on interface on transparent the connection, wherein transparent connection can for: do not rely on the connecting interface that the LPPa connecting interface is set up.
Wherein, in above-mentioned steps S302, E-SMLC can obtain state and the configuration information of LMU in the following manner:
Location measurement unit periodically based on SLm interface or its state information of LPPa interface report and configuration information to E-SMLC.Described state information comprises: location measurement unit is normal; The location measurement unit configuration information comprises: working frequency information and/or timing information and/or geographical location information.
Location measurement unit event ground triggers based on SLm interface or its state information of LPPa interface report and configuration information to E-SMLC.Described state information comprises: the location measurement unit resource is fully loaded, and location measurement unit is unavailable; The location measurement unit configuration information comprises: working frequency information and/or timing information and/or the geographical location information of location measurement unit configuration.
To E-SMLC, described state information comprises: location measurement unit is unusual based on the relative location measurement unit state information of LPPa interface report on the event ground, base station that is associated with location measurement unit.
After location measurement unit receives the request for location services of E-SMLC, based on SLm interface or its state of LPPa interface report to E-SMLC.Described state information comprises: location measurement unit is normal, and the location measurement unit resource is fully loaded, and location measurement unit is unavailable.
Location measurement unit is comprising its state information in the measurement report (Measurement Report) of E-SMLC.Wherein state comprises: location measurement unit is normal, and the location measurement unit resource is fully loaded, and location measurement unit is unavailable.
In step S304, E-SMLC position-based measuring unit state and configuration information is selected or gravity treatment participates in the location measurement unit of positioning action.E-SMLC does not receive that in the given time the location measurement unit state information then judges the location measurement unit abnormal state.
Wherein, in step S304, the state information that can select to participate in to measure the location measurement unit of operation comprises: normal; The location measurement unit configuration information that can select to participate in to measure operation comprises: support the object UE upward signal to send employed frequency and/or meet the timing accuracy requirement and/or meet the geographical position requirement.The state information that cannot be selected the location measurement unit that participates in the measurement operation comprises: unusual, unavailable, resource is fully loaded with; The location measurement unit configuration information that cannot select to participate in to measure operation comprises: do not support the object UE upward signal to send employed frequency and/or do not meet the timing accuracy requirement and/or do not meet the geographical position requirement.
Embodiment one
Fig. 4 is the flow chart that participates in the LMU of positioning action according to the selection of the embodiment of the invention one.What this embodiment described is to carry out the operating process that LMU selects after E-SMLC obtains LMU state and configuration information.Be connected based on LPPa between E-SMLC and the LMU or after transparent connection set up the SLm interface, LMU can be periodically or the event triggering report the operation to E-SMLC of its state and configuration information, E-SMLC can be with reference to state information and the configuration information of each LMU when selecting to participate in the LMU of certain certain location operations.The operating process of this embodiment may further comprise the steps as shown in Figure 4:
Step S402, this step is mainly finished the process of setting up of interface, set up the LPPa interface between the eNB comprising: E-SMLC and related LMU, be connected based on LPPa between E-SMLC and the LMU or the SLm interface is set up in the transparent connection of system's support, but transparent connection herein can be the E-SMLC that supports in the system of being not limited to LMU between the TCP or the SCTP that set up be connected.Wherein set up in the process at the SLm interface, LMU can inform E-SMLC with its working frequency information and/or timing information and/or geographical location information;
Step S404, this step is mainly finished LMU periodically or the operation to E-SMLC of its state and configuration information is reported in the event triggering.
LMU can periodically report its normal state information to E-SMLC based on the SLm interface of setting up between itself and the E-SMLC, and E-SMLC judges based on the normal state information of receiving the LMU report whether LMU is in normal operating conditions.Clearer in order to describe herein, can provide an exemplary method, but should be appreciated that, this exemplary method is not used for limiting present embodiment.The E-SMLC place arranges a monitoring LMU state timer, before the state timer expiry, whenever receive the normal status report of state that LMU sends, namely restart timer, if the state timer expiry, then E-SMLC can judge that LMU has been in the unusually state of (Down).
LMU can report that periodically its working frequency information and/or timing information and/or geographical location information are to E-SMLC based on the SLm interface of setting up between itself and the E-SMLC.
When LMU is fully loaded with (Busy) or unavailable (Not Available) state owing to other operation that needs the executive system demand is in resource, then can trigger status report based on the generation of this state event, in status report, can comprise the up-to-date state of LMU, and based on and E-SMLC between the SLm interface set up status report is sent to E-SMLC.
When LMU has changed its operating frequency owing to system requirements or closed certain operating frequency and/or timing information has carried out adjustment and/or positional information is adjusted.LMU can comprise the up-to-date configuration information of LMU based on the report of this Event triggered configuration information in the configuration information report, and based on and E-SMLC between the SLm interface set up its configuration information report is sent to E-SMLC.
Occur unusual when eNB detects the LMU module that is associated with it, then eNB is based on this Event triggered status report, in status report, can comprise LMU and be in the unusually information of (Down), and based on and E-SMLC between the LPPa interface report of its configuration information is sent to E-SMLC.Should be appreciated that the E-SMLC monitoring LMU that provides in this step be in the abnormal work state method and aforesaid can independence or be used based on the timer the method for monitoring.
Step S406, this step is replied corresponding response message after mainly finishing the status report or configuration information report that eNB that E-SMLC receives that LMU or its be associated sends, and this step is nonessential step.
Step S408, when E-SMLC selects to participate in the LMU of positioning action based on a certain specific location requirement, can consider the state information of LMU, the configuration information of LMU selects suitable LMU to participate in positioning action, and selective rule is: can be selected the LMU that participates in the measurement operation is the LMU that is in normal condition.Cannot be in LMU unusual, unavailable, the resource full load condition by the selected LMU that participates in the measurement operation.If E-SMLC is known in the configuration informations such as the operating frequency, timing information, geographical location information of LMU one or more, then need to select suitable LMU based on the configuration information of its LMU of having known, also namely: the configuration information that can be selected the LMU that participate in to measure operation need to satisfy supports the object UE upward signal to send employed frequency, the timing accuracy of back-up system demand and satisfy system for the requirement in LMU geographical position.After E-SMLC had determined to need to participate in the LMU of positioning action, system namely can continue to carry out other required operation of UTDOA mechanism.
Embodiment two
Fig. 5 is the flow chart that participates in the LMU of positioning action according to the E-SMLC gravity treatment of the embodiment of the invention two.This embodiment describes is that E-SMLC obtains the operating process of carrying out the LMU gravity treatment behind LMU state and the configuration information.The operating process of this embodiment may further comprise the steps as shown in Figure 5:
Step S502, similar with enforcement one, this step is mainly finished E-SMLC for the LMU set of certain specific positioning service Location of requirement participation positioning action, comprises the LMU1 in the diagram in the LMU set.
Step S504, this step is mainly finished LMU1 periodically or the operating process to E-SMLC of its state and configuration information is reported in the event triggering:
LMU1 can report that periodically its normal state information is to E-SMLC based on the SLm interface of setting up between itself and the E-SMLC, as described in embodiment one, E-SMLC can infer based on the normal state information of receiving the LMU1 report whether LMU1 is operated in normal operating conditions.
When LMU1 is fully loaded with (Busy) or unavailable (Not Available) state owing to other operation that needs the executive system demand is in resource, then can trigger status report based on the generation of this state event, in status report, can comprise the up-to-date state of LMU1, and based on and E-SMLC between the SLm interface status report is sent to E-SMLC.
When LMU1 has changed its operating frequency owing to system requirements or closed certain operating frequency and/or timing information has carried out adjustment and/or positional information is adjusted.LMU1 can comprise the up-to-date configuration information of LMU1 based on the report of this Event triggered configuration information in the configuration information report, and based on and E-SMLC between the SLm interface configuration information report is sent to E-SMLC.
Occur unusual when eNB detects the LMU module that is associated with it, then eNB is based on this Event triggered status report, in status report, can comprise LMU1 and be in the unusually information of (Down), and based on and E-SMLC between the LPPa interface LMU1 status information reporting is sent to E-SMLC.Should be appreciated that the E-SMLC monitoring LMU1 that provides in this step is in the method for abnormal work state and aforesaid method based on timer can independence or be used.
Step S506, this step is replied corresponding response message after mainly finishing the status report or configuration information report that eNB that E-SMLC receives that LMU1 or its be associated sends, and notices that this step is nonessential step;
Step S508, receive the message of the state information that comprises LMU1 or configuration information as E-SMLC after, can judge that then LMU1 whether can also the sustainable participation positioning action, its decision condition is similar to embodiment one:
The status condition that LMU1 can sustainable participation measures operation is: LMU1 is in normal operating conditions;
The status condition that LMU1 cannot sustainable participation measures operation is: LMU1 is in operating state unusual, unavailable, that resource is fully loaded;
If E-SMLC is known in the configuration informations such as the operating frequency, timing information, geographical location information of LMU one or more, then need to be based on the suitable LMU of configuration information screening of its LMU of having known, also namely: the configuration information condition that can be selected the LMU that participates in the measurement operation is: LMU supports the object UE upward signal to send employed frequency and meets the timing accuracy requirement and meet the geographical position requirement.When E-SMLC has determined LMU1 cannot the sustainable participation positioning action, then can carry out the LMU reselection operation, namely for all the other available LMU in this specific positioning service demand selective system.
Step S510, E-SMLC select LMU2 to participate in positioning action, then send positioning service requirement message (Measurement Request) message to LMU2.
Embodiment three
Fig. 6 is the flow chart that participates in the LMU of positioning action according to the E-SMLC gravity treatment of the embodiment of the invention three.This embodiment describes is that E-SMLC obtains the operating process of carrying out the LMU gravity treatment behind LMU state and the configuration information.The operating process of this embodiment specifically may further comprise the steps as shown in Figure 6:
Step S602, this step finish with embodiment one in similarly operation, that is, E-SMLC selects to participate in the LMU set of positioning action for certain specific positioning service demand, comprises the LMU1 in the diagram in the LMU set of selecting.
Step S604, E-SMLC sends positioning service requirement message (Measurement Request) to the LMU1 that select to participate in positioning action, comprising system requirements be used for the required parameter of receiving target UE upward signal.
Step S606, LMU1 if be in busy or not Available state, then can reply the LMU status message after receiving the positioning service requirement message of E-SMLC transmission, can comprise the current state of LMU1 in this message, to E-SMLC.
Step S608, after E-SMLC receives the LMU status message, then determine that based on the regular E-SMLC described in the embodiment two LMU1 cannot the sustainable participation positioning action, then E-SMLC carries out the LMU reselection operation, namely for all the other available LMU in this specific location services operation selective system.
Step S610, E-SMLC select LMU2 to participate in positioning action, and send request for location services message message to LMU2.
Embodiment four
Fig. 7 is the flow chart that participates in the LMU of positioning action according to the gravity treatment of the embodiment of the invention four.This embodiment describes is that E-SMLC obtains the operating process of carrying out the LMU gravity treatment behind LMU state and the configuration information.The operating process of this embodiment specifically may further comprise the steps as shown in Figure 7:
Step S702, this step finish with embodiment one in similarly operation, that is, E-SMLC participates in the LMU set of positioning action for certain specific positioning service Location of requirement, comprises the LMU1 in the diagram in the LMU set.
Step S704, E-SMLC sends the positioning service requirement message to the LMU1 that select to participate in positioning action, comprising system requirements be used for the required parameter of receiving target UE upward signal.
Step S706, LMU1 can comprise its state information in E-SMLC transmission measurement report (Measurement Report) message, and the state information that comprises can be busy or not Available.
Step S708, after E-SMLC receives the measurement report information that comprises its state information of LMU1 transmission, then can carry out decision as described in example 2 above, but judge LMU1 whether also sustainable participation positioning action and corresponding reselection operation based on the state information of LMU1.
Step S710, LMU1 can not participate in positioning action again when the E-SMLC judgement, and reselects LMU2 participation positioning action, then sends request for location services message to LMU2.
Embodiment five
Fig. 8 is the E-SMLC structured flowchart according to the embodiment of the invention five.As shown in Figure 8, this E-SMLC comprises: acquisition module 10 and selection module 20.Wherein, acquisition module 10 is used for obtaining state information and the configuration information of location measurement unit LMU.Select module 20, be used for the LMU according to state information and configuration information selection participation positioning action.
In the present embodiment, E-SMLC obtains state and the configuration information of LMU by acquisition module 10, thereby for selecting module 20 accurately to select the LMU that participates in positioning action that reference is provided, has reached the effect of the performance that improves whole navigation system.
Embodiment six
Fig. 9 is the E-SMLC structured flowchart according to the embodiment of the invention six.As shown in Figure 9, this E-SMLC comprises the functional module among the embodiment five: acquisition module 10 and selection module 20.
Wherein, acquisition module 10 obtains state information and the configuration information of LMU by system's supporting interface, wherein system's supporting interface comprises: the LTE location protocol between SLm interface, E-SMLC and the base station between E-SMLC and the LMU strengthens the LPPa connecting interface, wherein the base station of base station for being associated with LMU.
Wherein, acquisition module 10 comprises: first obtains submodule 11, second obtains submodule 12, the 3rd and obtains submodule 13.
First obtains submodule 11 is used for obtaining state information and the configuration information that LMU periodically reports by SLm interface or LPPa interface, and wherein, state information is that LMU is in normal operating conditions; Configuration information comprises: the working frequency information of LMU and/or timing information and/or geographical location information.
Second obtains submodule 12, is used for obtaining by SLm interface or LPPa interface state information and the configuration information of LMU event ground report, and wherein, state information comprises: the LMU resource is fully loaded or LMU is unavailable; Configuration information comprises: the working frequency information of LMU and/or timing information and/or geographical location information.
The 3rd obtains submodule 13, is used for obtaining by the LPPa interface state information of the base station event ground report that is associated with LMU, and wherein, state information is that LMU is unusual.
Wherein, select module 20 also to be used for: to select the LMU that meets the following conditions as the LMU that participates in positioning action: to be in normal operating conditions, to support the object UE upward signal to send employed frequency, meet the timing accuracy requirement and meet the LMU that the geographical position requires.
Embodiment seven
Figure 10 is the LMU structured flowchart according to the embodiment of the invention seven.As shown in figure 10, this LMU comprises: reporting module 30 is used for the Serving Mobile Location Center E-SMLC that state information and configuration information with LMU report to evolution, so that E-SMLC selects to participate in the LMU of positioning action according to state information and configuration information.
Wherein, in the above-described embodiments, reporting module 30 can also comprise: first reports submodule 31 and second to report submodule 32.
First reports submodule 31 to be used for by SLm connecting interface or LPPa connecting interface report reporting that LMU is periodically triggered, that comprise state information and configuration information to E-SMLC, and wherein, state information is that LMU is in normal condition; Configuration information comprises: the working frequency information of LMU and/or timing information and/or geographical location information.
Second reports submodule 32, be used for by SLm connecting interface or LPPa connecting interface LMU event ground being triggered, comprise that the report reporting of state information and configuration information is to E-SMLC, wherein, state information comprises: LMU is in the fully loaded or disabled state of resource; Configuration information comprises: the working frequency information of LMU and/or timing information and/or geographical location information.
Based in the LTE system for the demand of UE positioning action, the UTDOA location mechanism is introduced into.In the LTE system that has introduced the UTDOA location mechanism, the Serving Mobile Location Center of evolution (E-SMLC) is being born the function of the LMU of selection/reselection and scheduling controlling participation positioning action.In order to allow E-SMLC can more reasonably select and gravity treatment is suitable LMU to participate in positioning action, and can make corresponding processing based on state and the configuration information variation of LMU, need a kind of mechanism to allow E-SMCL can obtain real-time status and the configuration information of LMU, the various embodiments described above of the present invention provide the method for a kind of E-SMLC monitoring LMU state and configuration information.State and the configuration information of E-SMLC by obtaining LMU, thereby for the LMU that accurately selects to participate in positioning action provides reference, and and then improve the performance of whole navigation system.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and be carried out by calculation element, and in some cases, can carry out step shown or that describe with the order that is different from herein, perhaps they are made into respectively each integrated circuit modules, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (18)
1. the system of selection of a location measurement unit LMU is characterized in that, comprising:
The Serving Mobile Location Center E-SMLC of evolution obtains state information and the configuration information of LMU;
Described E-SMLC selects to participate in the LMU of positioning action according to described state information and configuration information.
2. method according to claim 1 is characterized in that, described E-SMLC obtains state information and the configuration information of described LMU, comprising:
Described E-SMLC obtains state information and the configuration information of described LMU by system's Supporting connectivity interface, wherein, it is one of following that described system Supporting connectivity interface comprises at least: the LTE location protocol between the SLm connecting interface between described E-SMLC and the described LMU, described E-SMLC and the base station strengthens the LPPa connecting interface, the base station of wherein said base station for being associated with described LMU.
3. method according to claim 2 is characterized in that, it is one of following that described state information comprises:
Described LMU is in normal operating conditions, described LMU and is in that abnormality, described LMU are in the resource full load condition, described LMU is in down state.
4. method according to claim 2 is characterized in that, it is one of following that described configuration information comprises at least:
The geographical location information of the working frequency information of described LMU, the timing information of described LMU, described LMU.
5. method according to claim 4 is characterized in that, the SLm connecting interface between described E-SMLC and the described LMU is:
That sets up between described E-SMLC and the described LMU is carried on the connecting interface that LPPa is connected; Or set up between described E-SMLC and the described LMU be carried on connecting interface on transparent the connection, wherein, described transparent connection does not rely on described LPPa and connects.
6. method according to claim 4 is characterized in that, described E-SMLC obtains state information and the configuration information of described LMU by system's Supporting connectivity interface, comprising:
Described LMU periodically triggers and reports its state information and configuration information to described E-SMLC by described SLm connecting interface or described LPPa connecting interface, and wherein, described state information is that described LMU is in normal operating conditions;
Described configuration information comprises: the working frequency information of described LMU and/or timing information and/or geographical location information;
Perhaps, described LMU event ground triggers and reports that by described SLm connecting interface or described LPPa connecting interface its state information and configuration information are to described E-SMLC, wherein, described state information comprises: described LMU is in resource and is fully loaded with or is in disabled state; Described configuration information comprises: the working frequency information of described LMU and/or timing information and/or geographical location information;
Perhaps, the base station event ground that is associated with described LMU trigger and by the LPPa connecting interface with the status information reporting of described LMU to described E-SMLC, wherein, described state information is that described LMU is in abnormality;
Perhaps, after described LMU receives the request for location services of E-SMLC, report its state information to E-SMLC based on described SLm connecting interface or described LPPa connecting interface, wherein, described state information comprises: LMU is in normal operation or resource is fully loaded or disabled state.
7. method according to claim 3 is characterized in that, E-SMLC obtains state information and the configuration information of location measurement unit LMU, comprising:
Described LMU comprises its state information in sending to the measurement report of described E-SMLC, wherein said state information comprises: LMU is in normal operation or resource is fully loaded or disabled state.
8. method according to claim 4 is characterized in that, described E-SMLC comprises according to the LMU of described state information and configuration information selection participation positioning action:
Described E-SMLC selects the LMU that meets the following conditions as the LMU of described participation positioning action: be in normal operating conditions and support the object UE upward signal send employed frequency and/meet the timing accuracy requirement and/meet the LMU of systematic geography status requirement.
9. method according to claim 4 is characterized in that, described E-SMLC does not receive the state information from described LMU in the given time, judges that then described LMU is in abnormality.
10. the Serving Mobile Location Center E-SMLC of an evolution is characterized in that, comprising:
Acquisition module is for the state information and the configuration information that obtain location measurement unit LMU;
Select module, be used for the LMU according to described state information and described configuration information selection participation positioning action.
11. E-SMLC according to claim 10 is characterized in that, described acquisition module also is used for by system's Supporting connectivity
Interface obtains state information and the configuration information of described LMU, wherein said system Supporting connectivity interface comprise following one of at least:
LTE location protocol between SLm connecting interface between described E-SMLC and the described LMU, described E-SMLC and the base station strengthens the LPPa connecting interface, the base station of wherein said base station for being associated with described LMU.
12. E-SMLC according to claim 11 is characterized in that, described acquisition module comprises:
First obtains submodule, is used for obtaining that described LMU periodically triggers, as to comprise described state information and configuration information report by described SLm connecting interface or described LPPa connecting interface, and wherein, described state information is that described LMU is in normal condition; Described configuration information comprises: the working frequency information of described LMU and/or timing information and/or geographical location information.
13. E-SMLC according to claim 11 is characterized in that, described acquisition module comprises:
Second obtains submodule, be used for obtaining the report that trigger, that comprise described state information and configuration information of described LMU event ground by described SLm connecting interface or described LPPa connecting interface, wherein, described state information comprises: described LMU is in the fully loaded or disabled state of resource; Described configuration information comprises: the working frequency information of described LMU and/or timing information and/or geographical location information.
14. E-SMLC according to claim 11 is characterized in that, described acquisition module comprises:
The 3rd obtains submodule, is used for obtaining event ground, the base station report that trigger, that comprise described state information that is associated with described LMU by described LPPa interface, and wherein, described state information is that described LMU is in abnormality.
15. E-SMLC according to claim 10 is characterized in that, described selection module also is used for:
The LMU that selection meets the following conditions is as the LMU of described participation positioning action: be in normal operating conditions and support the object UE upward signal send employed frequency and/meet the timing accuracy requirement and/meet the LMU of systematic geography status requirement.
16. a location measurement unit LMU is characterized in that, comprising:
Reporting module is used for the Serving Mobile Location Center E-SMLC that state information and configuration information with described LMU report to evolution, so that described E-SMLC selects to participate in the LMU of positioning action according to described state information and configuration information.
17. LMU according to claim 16 is characterized in that, described reporting module comprises:
First reports submodule, be used for by SLm connecting interface or LPPa connecting interface report reporting that described LMU is periodically triggered, that comprise described state information and configuration information to described E-SMLC, wherein, described state information is that described LMU is in normal condition; Described configuration information comprises: the working frequency information of described LMU and/or timing information and/or geographical location information.
18. E-SMLC according to claim 16 is characterized in that, described reporting module comprises:
Second reports submodule, for giving described E-SMLC by SLm connecting interface or LPPa connecting interface with described LMU event ground report reporting that trigger, that comprise described state information and configuration information, wherein, described state information comprises: described LMU is in the fully loaded or disabled state of resource; Described configuration information comprises: the working frequency information of described LMU and/or timing information and/or geographical location information.
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