CN102823308A - Methods and arrangements for performing measurements in a wireless communication network for positioning or for enabling location- based services - Google Patents
Methods and arrangements for performing measurements in a wireless communication network for positioning or for enabling location- based services Download PDFInfo
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Abstract
Method and arrangement in a positioning target node (130) such as e.g. a UE, for performing measurement on a reference signal for positioning or for enabling location- based services in a LTE network (100). The method comprises receiving a reference signal from a network node (110), (120), identifying at least one positioning subframe comprised within the received reference signal and performing measurement on the reference signal over the at least one identified positioning subframe. Also, a method and an arrangement in a network node (110, 120,140) are disclosed.
Description
Technical field
This programme relates generally to the signal measurement in the cordless communication network, and relates to method and device that location based services was located or enabled in the measurement of carrying out in the cordless communication network especially.
Background technology
Various services (for example, location based services) have been widely used, and the user locatees or the geographical position of identification subscriber equipment (UE).Through using the position that accurately to estimate UE based on the localization method of global positioning system (GPS).Yet, in city and/or indoor environment, possibly often have performance dissatisfactory based on the location of GPS.
Another known localization method is based on cell identification, and (Cell ID, method CID) wherein utilize the knowledge of geographical coordinate of the service evolved base station (eNodeB) of UE to estimate the UE position.Cell identification (the Enhanced Cell ID that strengthens; E-CID) (Evolved Universal Terrestrial Radio Access Network, the measurement that E-UTRAN) radio resource is relevant improves the technology that user UE estimates to locate the universal terrestrial radio Access Network that relates to additional UE of use and/or evolution.Insert for E-UTRAN; These measurements can comprise that UE measures (for example regularly difference, Reference Signal Received Power (Reference Signal Received Power, RSRP) etc.) and E-UTRAN measurement (for example eNodeB receives and dispatches regularly difference etc.) of UE transmitting-receiving.In previous network generated, for example, the RSRP type was measured and has been used in based in some distortion of the location of cell identification and also be used for the generation of neighbor lists.Just support, but still do not have reference scheme for LTE in the location of standardization LTE.
Routinely, (Reference Signal Received Quality, their equivalence RSRQ) or in the corresponding technology is that the UE that is used for mobility and other provided for radio resources management (RRM) function measures for RSRP and Reference Signal Received Quality.For E-UTRAN, defined these and measured as follows:
Reference Signal Received Power (RSRP) is the linear averaging on the power contribution (is unit with [W]) of element of resource, and element of resource carries cell specific reference signal in the measured bandwidth of being considered.
Reference Signal Received Quality (RSRQ) is following ratio of expressing:
Wherein N is that the E-UTRA carrier wave receives signal strength indicator (Received Signal Strength Indicator, RSSI) quantity of the Resource Block of measurement bandwidth.Can on identical Resource Block collection, make the measurement in molecule and the denominator.E-UTRA carrier wave RSSI is by measuring in the bandwidth the only linear averaging of the total received power (is unit with [W]) of observation in OFDM (OFDM) symbol (reference symbol that comprises antenna port 0) on N the Resource Block from the UE in all sources (comprising common channel services and non-service cell, adjacent channel interference, thermal noise etc.).
For E-CID location, the signal strength signal intensity in the WCDMA (WCDMA), CPICH Common Pilot Channel (Common Pilot Channel, CPICH) received signal code power (Received Signal Code Power, RSCP); And (the Broadcast Control Channel of the BCCH in the global system for mobile communications (GSM); BCCH) carrier wave RSSI is used as and (for example obtains for UE; Use the high precision position of agps system (Assisted Global Positioning System, A-GPS) method) to estimate related fingerprint.After quantizing, mark is measured and measurement is divided into troops subsequently, and wherein each troop measurement with band same tag and each are trooped and described the subarea of sub-district.RSRP maybe with GSM and WCDMA in similarly be used for the E-CID of LTE on the mode principle.It should be noted that known narrow band signal ionization meter suffers the more decline of multi-frequency selectivity and therefore less reliable.Therefore, the influence of fading of for example expecting LTE is less than GSM.
The RSRQ equivalent measurement that use is used for the E-CID of UTRAN has not been the attractive scheme of location, land, though can with measurement report give radio network controller (Radio Network Controller, RNC).Explanation is, control makes interference more at random and still less relevant with the geographical position to broad-band interference with power.In GSM, have that (Bit Error Rate BER) comes definition signal mass measurement Rx_qual, and it is not used for E-CID yet, and (Base Station Controller is available in BSC) at base station controller though measure with bit error rate.
Except E-CID, another possibility of using the signal measurement among the LTE is to be used for observing arrival time difference (Observed Time Difference of Arrival, OTDOA) adjacent selection.Close site location and little channeling factor make location reference signals, and (Positioning Reference Signal, interference PRS) is most important for positioning performance.This in addition,, does not use very large neighbor lists to be considered to very important, owing to possibly increase measuring period and increase false alarm probability yet from the visual angle of UE complexity.Therefore, need the careful neighbor cell list of selecting.In UTRAN, because broad-band interference and noise, can be the simple and quick method that is used for the OTDOA neighbor lists based on the selection of received signal code power (RSCP).Yet OTDOA do not realize in the practice of UTRAN, has nothing to do with UTRAN so discuss the existing scheme that is used to locate adjacent selection.
In GSM, the OTDOA variable is called as the observation time difference (Enhanced Observed Time Difference) or the E-OTD of enhancing, requires LMU to detect and reports the localization method based on the time difference of the timing relationship of different GSM sub-district.Conceptive, the GSM localization method is similar to the OTDOA among the LTE.Yet because typically a large amount of available frequencies and therefore high channeling, carrying out based on the signal strength measurement of for example RSRP (rather than for example RSRQ signal quality measured) that neighbor cell among the GSM selects is nature.
The Another Application of signal measurement (for example RSRP and RSRQ) is in the region covered that does not have enough necessary amount base stations, to mix this measurement and other available measurement (the reference signal time difference (Reference Signal Time Difference for example; RSTD) or regularly shift to an earlier date (Timing Advance, TA)).
In theory, the broadband essence of LTE radio signal still less changes those narrow band signals in its strength ratio mobile environment.Owing on the LTE down link, there is not power control, the Serving cell and the LTE signal strength signal intensity of neighbor cell that therefore detect in the UE side, for identical interference collection ratio in other mobile system even more stable.Yet, in any case change is inevitable.
Referring to Fig. 1,, can make up some estimation/filtering methods in order to alleviate the change of received signal power.Such method comprises: simple average (that is, simply to be that the received signal power of unit averages with dB), best no inclined to one side estimation, maximal possibility estimation, medium filtering and/or based on the method for Kalman filtering.Referring to Fig. 1, actual measurement data emulation in a short time illustrates the effect difference of the method for enumerating.
Aforesaid signal measurement (for example their equivalence in RSRP and RSRQ or the corresponding technology) is used for mobility, does not think that the mobility change of the signal strength signal intensity of power to received signal is responsive.But because radio signal strength change, signal strength signal intensity (for example RSPP) is considered to being used to locate purpose and (for example) timing information is too unreliable.Alleviate the change of discussing as above though propose filtering, residual change still can not be thought for the location and ignores.Therefore, need new measurement, or at least to the new method of existing measurement, and the method for the measurement that is used for locating at for example LTE.
Summary of the invention
Target is to alleviate at least some of the problems referred to above and provide to carry out signal measurement and in the cordless communication network of for example LTE, such measurement is used in the mechanism of locating purpose according to an embodiment of the invention.
According to the one side of example embodiment, rely on the method that the measurement of carrying out in the localizing objects node (for example UE) reference signal comes in cordless communication network location or enable location based services and solve above-described at least problem.This method comprises: receive the reference signal from network node; Identification is included at least one positioning sub-frame in the reference signal that is received, and carries out the measurement to reference signal at (that is, during the positioning sub-frame of having discerned) on the positioning sub-frame of having discerned.
According to example embodiment on the other hand, rely on the device (arrangement) that the measurement of carrying out in the localizing objects node (for example UE) reference signal comes in cordless communication network location or enable location based services and solve above-described at least problem.This device comprises receiver, is configured to receive the reference signal from network node.This device also comprises processor, is configured to discern at least one positioning sub-frame that is included in the reference signal that is received, and also is configured at least one positioning sub-frame of having discerned, carry out the measurement to reference signal.
According to example embodiment on the other hand, rely on that being used in the network node that is included in the cordless communication network locatees or the method that enables location based services solves above-described at least problem.This method comprises: receive the measurement from the localizing objects node, wherein carry out measurement and discern this measurement by the localizing objects node on the positioning sub-frame of at least one in being included in reference signal.The geographical position of localizing objects node is confirmed in the measurement of the execution that this method also comprises use and received.
According to other aspect, aspect, by in network node, being used for locating or the device of the location based services of wireless-enabled communication network is realized this target.This device comprises receiver, is configured to receive the measurement from the localizing objects node, wherein carries out measurement and discerns this measurement by the localizing objects node on the positioning sub-frame of at least one in being included in reference signal.This device also comprises processor, is configured to use the measurement of the execution that is received to confirm the geographical position of localizing objects node.
The advantage of embodiment is: because the positioning sub-frame in the reference signal is low interfering subframe, use the measurement that those low interfering subframe are carried out to realize that reliable localization is definite, even have the change or the residual change of received signal power.Use the estimation/filtering method of former description also to improve the feasibility of embodiment in addition.
Another advantage of embodiment is: utilize the new signal (quality) of locating among the LTE to measure.
Another advantage of embodiment is: the influence of the variation of service load because performed measurement is not subject to or is subject to hardly (this because according to examples measure be on the low interfering subframe in location or during carry out), so it is definite to have improved the location.
Other target, advantage and the new feature of method described herein and device will be from the detailed description of hereinafter and become obvious.
Description of drawings
To this method and device be described in more detail about accompanying drawing now, wherein:
Fig. 1 is the illustrating of comparison between the different known filtering methods.
Fig. 2 is the block diagram that is shown in the example embodiment cordless communication network that wherein can realize this programme.
Fig. 3 A is the combination flow chart and the block diagram of the example embodiment of diagram this programme.
Fig. 3 B is the combination flow chart and the block diagram of the example embodiment of diagram this programme.
Fig. 4 A is the diagram for the different PRS patterns of different districts ID generation.
Fig. 4 B is the diagram for the different CRS patterns of different districts ID generation.
Fig. 5 A is the flow chart that is shown in the example embodiment that is used to set up the database with neighbor cell list in the location node.
Fig. 5 B is the flow chart of the example embodiment of the method in the illustrated position node.
Fig. 5 C is the flow chart of example embodiment of this method of the diagram measurement that is used to locate.
Fig. 6 is the schematic flow diagram of the embodiment of the method in the illustrated position destination node.
Fig. 7 is the block diagram of the embodiment of the device in the illustrated position destination node.
Fig. 8 is the schematic flow diagram of the embodiment of the method in the diagram network node.
Fig. 9 is the block diagram of the embodiment of the device in the diagram network node.
Embodiment
The disclosure relates generally to the signal measurement in the cordless communication network, and relate to especially that the signal measurement that is used to from or some sub-districts is used to locate, the wireless network architecture of position and location based services.As will describe, method and method and device in device and the network node in the localizing objects node are provided, it can be put into practice in the embodiment of the following stated.Yet please note and to implement this method and device in many different forms and should not be construed as to be limited to the embodiment that this paper sets forth.Unintentionally this method and device are limited to disclosed any particular form, and opposite, this method and device have covered all modifications, equivalence and the alternative in the scope that drops on this programme that is defined by claim.
Some embodiment of this paper solve the framing signal mass measurement of the location that is used for strengthening LTE, their signaling and use.Related agreement be the LTE location protocol (LTE Positioning Protocol, LPP) with LTE location protocol annex (LTE Positioning Protocol Annex, LPPa) and the signaling of following these measurements of argumentation.What should mention is the location of just supporting LTE in standardization, does not still have reference scheme for LTE, is used for from UE to the location node, signaling the for example means of the measurement of RSRP and RSRQ though in 3GPP, introduced.In LPP and LLPa, introduced RSRP and RSRQ and measured, be intended to strengthen the auxiliary E-CID location of UE.For the location based on UE, measurement need not signaling and easily available, though still be not limited to for example some subframe, will be applicable to that therefore UE is auxiliary and based on the localization method of UE in the example embodiment of following description.
What should mention is to have comprised RSRP as the used information element of key element, the destination apparatus of E-CID signal measurement information (provide various subscriber equipmenies to measure location server and as partial L PP message) and RSRQ measures.Rely on the LPPa agreement, can measure also that (Evolved Serving Mobile Location Centre E-SMLC) asks RSRP and RSRQ measurement by evolved Serving Mobile Location Center from eNodeB in the initiation request at E-CID.Can in the E-CID measurement report, available measurement (if in special time, obtaining) be sent to E-SMLC then.If unavailable, then the configurable subscriber equipment of eNodeB is reported the metrical information of being asked like regulation among the 3GPP TS 36.331.
Can carry out this programme with being different from concrete those and the alternate manner that do not deviate from the intrinsic propesties of this programme of setting forth of this paper.Present embodiment be regarded as illustrative in all respects and and nonrestrictive, and in the implication of appended claim and equivalent scope change and be intended to be contained in wherein.
Fig. 2Be illustrating of cordless communication network 100.Cordless communication network 100 comprises first base station 110 and second base station 120.Cordless communication network 100 also is applicable to and comprises a plurality of localizing objects nodes 130, for example UE unit.Base station 110,120 is configured to send wireless signal via wave point and receives wireless signal to localizing objects node 130 and from localizing objects node 130, by arrow A 1 and A2 indication.In addition, cordless communication network 100 comprises location node 140 (for example location-server).First base station 110, second base station 120 and location node 140 can be called network node.
Though in Fig. 2, described 110,120, location nodes 140 in two base stations and a localizing objects node 130 (for example UE); But be appreciated that another configuration that can comprise base station or network node 110,120, location node and UE unit 130 in the cordless communication network 100 respectively.Therefore, a possible network configuration during Fig. 2 only illustrates a lot.
Illustrated exemplary connection link L1 is that logic is connected (for example through more high-rise agreement) or physics directly connects with L2 among Fig. 2.Also note in Fig. 2; Because base station 110,120 can not have to the direct connection of location node 140 (for example E-SMLC); So illustrate logical links; Though the localization message of exchange can be that transparent (promptly for Mobility Management Entity (Mobility Management Entity is unreadable MME)), they can connect via Mobility Management Entity for example between base station 110,120 and the location node 140.
In addition; Depend on for example used radio access technologies and term, any, some or all of base station 110,120 can be called Node B (eNodeB or eNB) and/or basic transmitting-receiving station, access point base station, base station router, beacon apparatus, via node, cell site, the celi towers etc. of for example remote radio unit, access point, Node B, evolution.Sometimes those skilled in the art's (even in this description) " sub-district " colloquial style synonym that also uses a technical term as the base station; Even this is not exclusively correct on the stricti jurise, this is because the radio that the sub-district is more suitable for referring to by from the base station transmits the geographic area that covers; And a plurality of sub-districts of base station definable.
In certain embodiments; Can be by UE, radio communication device, wireless communication terminal, mobile cellular telephone, PCS Personal Communications System terminal, travelling carriage (Mobile station; MS), personal digital assistant (Personal Communication Assistant, PDA), cell phone, laptop computer, computer or the device that is configured to any other type of radio communication represent localizing objects node 130.Also should understand, can more represent localizing objects node 130 by radio node on the broad sense, for example it in addition can be radio base station, slightly node, femto node, little node, transducer, via node, repeater etc.Yet,, in the text of subsequent descriptions, will as one man utilize term " localizing objects node " in order to strengthen readability of the present disclosure and understanding.
Via at least the first or second base station 110,120 that is included in the cordless communication network 100, localizing objects node 130 also can be communicated by letter with UE unit (not shown in Fig. 2).
Should note for utilizing the quality signal mass measurement to be used for still not having definite scheme in the LTE location.Simple and quick method can be employed in the method for using in the previous network.Below discuss the applicability of such method and with the identification problem of available measurement; Concentrate on following importance: what signal measurement is used among the LTE is located, how with the signal quality measured OTDOA of being used in neighbor lists selection and/or how with the signal quality measured location that is used in.
A problem is whether can measure signal quality measured (only the arriving the degree of RSRQ) that is used to locate during current standard is not defined in positioning sub-frame, and this makes has difference when being used for mobility or location.Generally speaking, if also need consider data load (normally ambulant situation), it can be incoherent then during positioning sub-frame, carrying out mobility measurements.
Another problem is to be generally cell specific reference signal definition RSRP and therefore to also have RSRQ, and RSSI is defined on the whole bandwidth and (promptly comprises all interference).This means and use these measurements to be used for mobility and general provided for radio resources management (RRM) function up to now quite reasonablely.
To be UE be applied to L1 filtering/more high-rise filtering and smoothing RSRP and RSRQ and between conventional subframe and positioning sub-frame, do not distinguish another problem, can differ widely though measure.Other problem can be OTDOA, for example, though, be not actually used in practice and therefore in product, in fact do not have implementation for the UTRAN standardization.In addition, description below, to compare with previous network (wherein the selection based on RSRP has become typical protocols), it can be prior that neighbor cell is selected, promptly new method is necessary.
Generate for the neighbor lists in the previous network, do not consider RSRQ and RSSI (or in the relevant technology their equivalence).For example in WCDMA, this is made an explanation through controlling at whole frequency band spread signal and power.Because the broadband person's character of interference and noise, more natural is to select immediate neighbor cell according to radio propagation (that is, based on CPICH RSCP).Different for the OFDM situation, wherein because (Resource Element RE) goes up the unlike signal that transmits, and the interference on the different subcarriers is different at corresponding element of resource.In addition; Cell specific reference signal among the LTE (Cell-specific Reference Signal; CRS) channeling on is not as the height among the GSM, and it makes common-channel interference more crucial in LTE, particularly because in LTE, there is not maximum common-channel interference requirement (being different among the GSM).The accessory problem of another former description is that signal strength signal intensity (RSRP measurement) is too unreliable so that can not be used for mixed positioning and timing information (for example pseudorange, RSTD or TA).And in many cases, signal strength signal intensity is not relevant with the geographic distance that arrives eNodeB.Like former description, have many filtering motions to alleviate this situation, but residual change still can't be thought and to ignore for the location.
Fig. 3 AThe exemplary general general survey of the embodiment of diagram this method.
This method can comprise a plurality of action 1-9, so that in cordless communication network 100, correctly carry out the measurement to reference signal, its measurement is relevant with the received power and/or the quality of reference signal.According to different embodiment, can carry out these actions according to being different from the order of enumerating indication slightly.
According to some embodiment, network node 110,140 can be asked the location of certain position destination node 130.Can make position requests and on agreement LPP, send pellucidly by location node 140 via first base station 110.
According to some embodiment, can trigger reference signal to localizing objects node 130 and measure (for example PRS being measured) through on LPP, sending auxiliary data from location node 140 (for example E-SMLC or SLP), promptly ask not start from the base station 110.According to some embodiment, the exchange of before auxiliary data, can between localizing objects node 130 and location node 140, having the ability.
In another optional action, can make localizing objects node 130 and whether can carry out the inspection that reference signal is measured.Therefore localizing objects node 130 can receive the request from network node 110,140, is used to confirm that localizing objects node 130 can go up the reference signal of carrying out reference signal (can be PRS) in positioning sub-frame (for example low interfering subframe) and measure.
Action 3
The request that receives from network node 110,140 is used for confirming whether localizing objects node 130 can be after positioning sub-frame (being included in reference signal) be gone up the execution measurement, and localizing objects node 130 can be answered.If answer is for being then can carry out subsequent action.
According to some embodiment, can receive the positioning sub-frame indication by some other assemblies, for example sending signals to localizing objects node 130 or for example 110 signallings on RRC by location node 140 on the LPP from the base station.If do not receive such information, then localizing objects node 130 can independently be discerned such positioning sub-frame or such subframe can be predefined (for example being positioning sub-frame).According to some embodiment, when these subframes were positioning sub-frame, then localizing objects node 130 can dispose based on the PRS that obtains from location node 140 in the auxiliary data and discern these subframes.
Action 5
According to some embodiment, can transmit triggered location destination node 130 and carry out request or instruction the measurement of reference signal.
Action 6
The reference signal that localizing objects node 130 receives from network node 110,120 (for example base station or beacon apparatus).
Action 7
130 identifications of localizing objects node are included at least one positioning sub-frame in the reference signal that is received, and at least one positioning sub-frame of having discerned, carry out and measure.Therefore, according to some embodiment, can carry out and measure so that do not make the reference signal measurement for any subframe of positioning sub-frame to unidentified.
According to some embodiment, measurement report can such as diagram be sent to base station 110, but also can further be sent to location node 140, for example arrive base station 110 pellucidly on the LPP, its location node 140 also can be confirmed the position of localizing objects node 130.
Action 8
The measurement report that in transmission, will carry out reference signal is given network node 110,140, so that use the signal measurement that has transmitted to enable the confirming of geographical position of localizing objects node 130.
Action 9
Network node 110,140 is confirmed (geography) position of localizing objects node 130 based on the measurement that has received that reference signal is made.
According to some embodiment, this method also relates to makes localizing objects node 130 during positioning sub-frame (for example low interfering subframe), carry out signal measurement, and reports them individually.According to some embodiment,, for example when on CRS, accomplishing location survey, then can measure and report each port if on a plurality of ports, transmit measured reference signal.
Fig. 3 BThe another exemplary general general survey of the embodiment of diagram this method.
This method can comprise a plurality of action 1-8, so that in cordless communication network 100, correctly carry out the measurement to reference signal, its measurement is relevant with the received power and/or the quality of reference signal.According to different embodiment, can carry out action according to being different from the order of enumerating indication slightly.
With with Fig. 3 A of former description in the similar mode of example embodiment carry out signalling.Main difference is in the example of Fig. 3 B; Location node 140 (replacing localizing objects node 130) can be discerned at least one positioning sub-frame that is included in the reference signal that is received, and at least one positioning sub-frame of discerning, carries out the measurement to reference signal.
According to some embodiment, the location of certain position destination node 130 can be asked in first base station 110.According to some embodiment, can on agreement LPP, send position requests pellucidly.
According to some embodiment, before auxiliary data, can between localizing objects node 130 and base station 110, optional capabilities exchange be arranged.
Action 5
Action 6
According to some embodiment, can for example on the LPP measurement report be sent to base station 110.
Action 7
According to some embodiment, measure based on the CRS that describes below for example that can to derive the class RSRQ that is used for PRS signal quality measured.
Some advantages that adopt the embodiment of those descriptions can be that definition is measured in the reusable standardization; Promptly except new measurement opportunity (promptly during the positioning sub-frame); Also can consider extra as definition to the measured RSRP of CRS and RSRQ (though, still have the RSSI on whole bandwidth).
Because positioning sub-frame is through low interfering subframe definition, does not receive (in synchronizing network) or receive (in asynchronous network) hardly because the influence of the variation of service load so measure.
According to some embodiment, definable is used for the relevant signal measurement of PRS particularly in standard, the RSRP_PRS that for example on the bandwidth identical with transmitting PRS, carries out, RSRQ_PRS, RSSI_PRS etc.Make OTDOA can localizing objects node 130 carry out the signal measurement that for example is similar to RSRP, RSRQ etc. of PRS and send this measuring network node 110,120,140 (for example location node 140); It can be E-SMLC or base station 110,120 (for example, the direct respectively eNodeB on LPP and RRC).Use RRC, the measurement that is transported to base station 110 can further be sent to location node 140 (E-SMLC), for example through agreement LPPa.Similarly, can send the request that is used for these measurements through LPP or LPPa.
In another embodiment, optionally measure and signal, like what can in auxiliary data, indicate by carrier wave/carrier component.In another embodiment, can be transmitted in the signal measurement on a plurality of carrier waves in combination or individually by the carrier wave positioning reporting.In another embodiment, similarly, for the RSRP of CRS, the similar measurement of going back definable PRS is used for the idle pulley of Serving cell, for example is used for background UE and follows the trail of.In a further embodiment, measure definition and can be not restricted to the individual antenna port, but can be also reportable for defining with the as many antenna port of port number (be used for reference signal, this reference signal is used for the location survey of sub-district) individually.
Can mention some advantages of those embodiment.For example, if PRS has the better relevant nature than CRS, then when the PRS signal is measured, even the measurement that is similar to RSRP can be favourable.
Unlike signal can be designed to have different frequency duplex factor as one (for example, the channeling of PRS be 6 and the typical channeling of CRS be 3).In LTE, the transmission pattern of physical signalling is typically very regular.In addition, (Physical Cell Identity PCI) comes the modeling channeling through predefined pattern of displacement and related frequency displacement and Physical Cell Identifier in frequency can to adopt predefined mode.
Fig. 4 AWith
Fig. 4 BMiddle examples shown, wherein Fig. 4 A illustrates the example of 6 multiplexing PRS patterns and the example that Fig. 4 B illustrates the 3 multiplexing CRS patterns of sub-district ID zero, and their frequency displacement relevant variable is on the right side.Should note the method for in this section, describing and not require that pattern is accurately as illustrated among Fig. 4 A and Fig. 4 B.
PRS can have better disturbed condition (for example in current standard), and the last channeling of PRS is six, is three and have effective frequency on the CRS of typical two antenna settings multiplexing.
Attention not necessarily relates to the measurement of broad-band interference according to this method of described embodiment.In order to get rid of unnecessary interference, definable is different from the framing signal mass measurement of those current CRS of being used for, for example only PRS element of resource (RE) or CRS RE (if being used for the location) definition is measured.It may be noted that except generally speaking also for the definition of PRS or reference signal, can changes RSRP type measurement within reason (molecule of the RSRQ of current definition); Yet the RSSI type is measured (denominator of the RSRQ of current definition) can be only for corresponding RE definition.In another embodiment; The measurement during the positioning sub-frame (particularly to PRS) can be acquiescently when occurring that the location was carried out during opportunity or can trigger by location protocol alternatively, for example LPP when when localizing objects node 130 request respective signal are measured or LPPa when 110 triggerings when asking from the base station.In another embodiment, for backward compatible, if this is known for network node the 110,120, the 140th, this method of acquiescence can shall not be applied to does not support this features location destination node 130.In another optional embodiment, can carry out various signals to different carrier and measure with the indication in the report of being included in, for example if identical or main carrier are measured, then boolean's designator is true.
According to some embodiment, when carrying out that mobility or general provided for radio resources management (RRM) are measured or during with the measurement of non-positioning sub-frame, can getting rid of positioning sub-frame to the location separately.Can mention that also the positioning sub-frame that is used for location survey not necessarily is used for regularly measuring and not necessarily comprising PRS.
According to some embodiment, can estimate reference signal quality based on the average signal quality measurement of other reference signal that is used for synchronizing network.
Interference can be the composition of signal quality metrics.Another composition can be the reception signal strength signal intensity of measured signal.This paper supposition can be carried out the measurement of reference signal RS0 (for example CRS), and hopes to estimate the interference to another reference signal RS (for example PRS).Provide the average gain factor and delivering power relation simply owing to derive the received power relation of two signals, so can calculate average received signal power.In subsequent segment, concentrate on the interference relationships of two signals, promptly concentrate on the interference (providing the interference of RS0) of deriving RS.With known interference and received signal power, also can confirm the received signal quality of reference signal then.
In OFDM (OFDM) system, transmission occurs on a large amount of quadrature subcarriers.For each subcarrier, therefore disturb and can on principle, be regarded as narrow band interference, mean the signal that transmits on the subcarrier only with disturb at the signal that in other sub-district, transmits on the same subcarrier.
Consider localizing objects node 130.Below be interference
to reference signal (for example, like the PRS on the subcarrier in the OFDM symbol (element of resource) that on the UE position, experiences) modeling:
Wherein:
is all set of cells,
During as
,
is the average total path gain between conveyer and the UE receiver
is average noise power, and it can be modeled as the desired value of Gaussian random variable.
The service power of the every element of resource in the sub-district (sub-district
) be gross power in the sub-district of on non-reference signal resource key element, transmitting divided by the total quantity of the element of resource in the measured bandwidth of the cell i that is being not used in reference signal, comprise subcarrier outside the measured bandwidth of the reference signal that drops on sub-district
(if less than cell i that or remain on unloaded those in the sub-district
).Attention also can comprise the interference from the reference signal of other type from the interference of business in formula (1), for example, it does not occur in the current standard scheme that has synchronous LTE network.
In the time can't obtaining the measurement of reference signal (for example when not by standard definition time), it has and helps derive the interference from a channeling factor to another channeling factor, and does not have the clearly signaling-information mass measurement of the signal of each type.Though the average power of every element of resource still can change (because power rising/decline) between unlike signal,, simplified such conversion of LTE owing in the LTE down link, there is not the fact of power control.Below be the conversion of the reference signal RS0 of derivation, be characterised in that the channeling factor.With this conversion, the interference on the subcarrier that transmits RS0 can be following:
The following collection that formula 2 is used about the cell i definition:
All sub-districts of the pattern of different RS in
=have and the cell i
All sub-districts of the pattern of different RS0 in
=have and the cell i
In formula 2, in addition:
The average power of
=every non-RS element of resource, and
The average power of
=every non-RS0 element of resource.
(for example when being zero for second when the power level of every element of resource of reference signal RS and RS0 is identical) under some special situation, can simplify formula 2.Another such situation can be when last with second from the bottom when being zero and when the average power of every element of resource of reference signal and business is identical.For example, this can occur in (supposition frequency domain average power on all element of resources is identical) on the total system load.Another such situation can be when last is zero, to work as:
For example when the pattern of RS0 and RS is identical, get etc., and for example first set is the subclass of second set when also being the interfered cell on the RS than the higher channeling of RS and the interfered cell to cell i on RS0 when RS0 has, but is not conversely.
Utilize above situation; Every element of resource of average interference on the given CRS element of resource (three channelings with two transmission antennas) and supposition CRS and PRS has identical delivering power and on the non-reference signal resource key element in CRS and the PRS symbol, identical power (for example when all in positioning sub-frame, measuring) is arranged, and can estimate that the average interference on the PRS element of resource (six channelings) reduces (reducing comparison with the average interference on the CRS element of resource) as follows from formula (2):
In practice, the given received power of all sub-districts in the set that can not be
.Yet the measured received power of sub-district can typically be available the most by force, uses formula (2) or uses formula (3) to obtain the most important part of interference reduction in its special scene that allows in having the above-mentioned example of CRS and PRS, to suppose.For example, when PRS carry out is measured but have only CRS signal quality measured when being available, formula capable of using (2) is used for the neighbor cell of OTDOA location and selects.
Note, if the jamming resource key element is measured interference, formula capable of using (2) and (3).When on whole bandwidth, measure disturbing (a for example definition type RSSI),, then disturb not rely on measured signal and so can be identical for PRS and CRS if in the asynchronous network of measurement use same type synchronously and in to(for) PRS and CRS.Yet the measurement of possible is CRS is given, and is desirable to the Interference Estimation of PRS element of resource.Also can reduce (reducing comparison) then from the average interference that calculate on the PRS formula (2) with the average interference of utilizing the RSRQ measurement to be obtained.For example; Every element of resource of supposing CRS and PRS have among zero service power and sub-district
on identical delivering power, the PRS symbol (the promptly low positioning sub-frame that disturbs) with respect to the average load factor on the non-CRS element of resource of
; Interference reduction becomes as follows, in formula 4:
The embodiment of the method for the signal quality metrics that uses location neighbor lists selection will be described now.
As stated, the neighbor lists in the class OTDOA scheme of the prior art is selected typically based on received power intensity.Yet, in LTE, because the importance of common-channel interference influence, when design OTDOA neighbor lists, the interference on the reference signal of hoping to consider to be used to locate (for example PRS or CRS).In certain embodiments, the tolerance of the influence of reflection interference capable of using.For example, when this was available only measurement type, such tolerance can be RSRQ (even PRS and non-CRS are used for the location), preferably during positioning sub-frame, measures.When RSRQ was used for CRS, the class RSRQ measurement of PRS was available and might derives the similar measurement that is used for PRS.Type signal and interference and noise ratio (SINR) measurement only cause the interference to the reference signal (for example CRS or PRS) that is used to locate.The relative reception power level of measured sub-district is about reference cell.
Here, for example, Serving cell possibly be the reference cell in the UE position, for example
Wherein:
On principle, more than any tolerance can be used for adjacent selection.And, in order to select neighbor cell, possibly must know the reference cell of each localizing objects node 130.It can be favourable always Serving cell not being assumed to reference cell (as stated).Therefore, except that the adjacent selection task in location, location-server 140 also can be selected the optimal reference sub-district of localizing objects node 130 about some criterions.Being used to of more than discussing locatees tolerance that neighbor lists selects and also can be used for reference cell and select.
Be used for this basic selection strategy that reference cell is selected and the location neighbor cell list is selected and can comprise any, some or all of of following composition:
Part 1: select/preferentially have the more sub-district of high quality metrics; For example according to being used to locate or other tolerance and the signal on the signal measured and the descending of interference and noise ratio (SINR) are arranged the tabulation of candidate cell and selected the top n sub-district; Wherein N is the quantity of interested sub-district, for example is used for neighbor lists size or N=1 that reference cell is selected.
Part 2 (optional): from the preferential sub-district within view of UE viewpoint.Can calculate the sight line state based on some other calculating, for example compare adjacent signals (interference) intensity and ideal path loss model or use channel estimating possibly, select those " approaching " sub-districts.
In part 1, when defining the sub-district neighbor lists and selecting reference cell, what can hope is to determine not based on transient measurement.For example, according to some embodiment, instead, and before relatively the sub-district makes a choice decision, in the filtering alternative of discussing before capable of using one.
The target of algorithm (part 1) provides the set to the sub-district of sizing; For example every particularly localizing objects node 130; But can have the similar characteristics (location quality of service of each district and/or each sub-district (Quality of Service for example for one group in practice; QoS) requirement, order terms, subscriber's group etc.) localizing objects node 130 design lists so that the tabulation that is generated can be stored in the database and be used for a plurality of localizing objects nodes 130 then.Design lists or for example periodically or receiving real-time update tabulation when triggering statically.Can be according to the tabulation with a group of localizing objects node 130, district and/or cell association of classifying of a certain order; For example reduce signal quality (different weights also can be applicable to different districts) from the expectation of sub-district; So that when asking the neighbor lists of littler size, can take out the top n neighbor cell in the tabulation from be stored in database.Also can allow localizing objects node 130 from the neighbor cell list that is received with maximum possible neighbor cell quantity, to select desirable number of cells from localizing objects node 130 viewpoints with the order of some preferences neighbor cell list of classifying, this is not necessarily best from the complexity point of view of localizing objects node 130.
Can follow following action and come constructs database:
1) collect from the measurement statistics of a plurality of localizing objects nodes 130,
2) grouping and mark are measured,
3) generate the neighbor cell list that is used for each mark,
4) database of the structure/renewal neighbor cell list related with each mark.
When receiving Location Request, network can be based on sub-district ID for example, regularly wait in advance and have some rough estimate of localizing objects node location.Then, can this rough position be mapped to some marks and can extract the related neighbor lists that is stored in the database then.Can extract a plurality of tabulations that are used for localizing objects node 130, can a plurality of tabulations be compiled into a final tabulation then, referring to
Fig. 5 AWith
Fig. 5 B
Fig. 5 AThe method that is used to make up and upgrade the database with neighbor cell list in the location node 140 is described.
This method can comprise a plurality of action 1-8, so that in cordless communication network 100, correctly make up and upgrade the database with neighbor cell list.According to different embodiment, can carry out action according to being different from the order of enumerating indication slightly.
Action 1-4 on the left side of Fig. 5 A describes the process that generates neighbor cell list and action 5-8 on the flow process of right side has described the mode based on the OTDOA feedback of guaranteeing from the neighbor lists of location, to get rid of the neighbor cell that lost efficacy.
Definition tolerance and collection are measured.For example, measurement can comprise signal quality measured.
According to any suitable criterion, can receive, divide into groups and the mark measurement.
Action 3
Based on performed measurement, calculate neighbor lists.This calculating can be initiated by trigger, for example if be labeled as new, or sometime at interval (it can be scheduled to) periodically initiate.
The storehouse Updates Information.Thereby can add the neighbor lists that calculates to database.
Action 5
Can obtain OTDOA measures and the OTDOA position.
Action 6
Can check the measurement of inefficacy or measurement with big error.
Action 7
Can discern and measurement of losing efficacy or the relevant sub-district of measurement with big error.
Action 8
The storehouse Updates Information.Can get rid of the sub-district (wherein the measurement of (to those signals) comprises big error) that is identified as the transmission signal in the location neighbor lists from database.
Having a plurality of UE groups and localizing objects node 130 can belong to more than a group.Neighbor lists can be related with each group.Also can neighbor cell list be designed to " neighbor cell blacklist ", so that the sub-district in blacklist is not included in the final formal neighbor lists that sends signals to localizing objects node 130.The sub-district can be included in owing to a variety of causes in " deceiving " list, for example poor signal quality or restricted access, closed user group etc.Final tabulation can be with localizing objects node 130 under the associating of a plurality of groups of related formal neighbor cell lists, eliminating and localizing objects node 130 are that wherein other of member organized related sub-district from " deceive " list.Use " deceiving " list to allow to reduce unnecessary spending and the redundancy in the database.
Fig. 5 BThe method of the neighbor lists that is used to obtain UE in the location node 140 is described.
This method can comprise a plurality of action 1-5, so that in cordless communication network 100, correctly obtain the neighbor lists of UE.According to different embodiment, can carry out action according to being different from the order of enumerating indication slightly.
Can receive Location Request.
Mark capable of using matees or resolves the Location Request that is received and is included in the group in it to find UE.
Action 3
Can extract suitable neighbor cell list from database.
Can from formal and " deceiving " list, extract the final neighbor cell location tabulation of UE.
Action 5
The neighbor cell of can classifying.Can select best neighbor cell.
The signal quality measured method of locating of using will be described now.
As stated, in order to realize desirable accuracy, exist and wherein make up the zone that a plurality of measurements (possibly be dissimilar) have superiority.For example, because very little A-GPS satellite, the OTDOA base station of not enough quantity etc., promptly when needs are derived some information and are come to determine the position roughly, can this thing happens.
Can from formula (1), derive: given total interference
, can estimate from the received signal power level of some (detecting) sub-districts (for example be obtained among the LTE RSRP measure) and noise power (it can typically be estimated) and from the received power of other sub-district.
In this way, even do not detect, if the total received power of such sub-district is regarded as " the gathering fingerprint of hiding ", the contribute information that then so one or more sub-districts can be extra with this is given the localization method based on fingerprint.When carrying out mark,, can be sufficient so only store total interference owing to can derive different hiding fingerprints based on other information available then for fingerprint database.
In addition, under some special situation, even can extract more information.Observe when the interference that not do not transmit from data, for example in positioning sub-frame (when being regarded as low interfering subframe), second with can be zero.Compare with above motion just, so noiseless measurement possibly be better Finger-print labelling method.Utilize the little set of the sub-district of in the UE geographic area, disturbing of expectation, can obtain the little upper bound on the received power of detected cells not.Utilize a sub-district of not detecting, in this way fully the received power of " recovery " this sub-district and can be similar to the mode of the sub-district that is used for having detected and be used for fingerprint matching.
The interference strength of being extracted not only can be used for fingerprint, can also be used to generating location estimation.By means of some filtering mechanism (referring to more than), such combination can realize improved accuracy.
Fig. 5 CDiagram is according to the nonrestrictive exemplary flow of this method of some embodiment.
Fig. 5 CDescription is used to utilize measures the flow process of locating.
This method can comprise a plurality of action 1-6, locatees so that correctly utilize to measure.According to different embodiment, can carry out action according to being different from the order of enumerating indication slightly.
Can obtain RSRP/RSRQ and/or noise floor measures.
The algorithm of current proposition capable of using comes interference level.
Action 3
Can carry out inspection, whether inspection has detected any positioning sub-frame.
If detect positioning sub-frame, the received power of the sub-district that then can estimate not detect.
Action 5
The power level of estimation capable of using is used as " meticulous " Finger-print labelling method.
Action 6
If do not detect positioning sub-frame, then the power level of estimation capable of using is used as " coarse " Finger-print labelling method.
Utilize current scheme, can find out following at least advantage:
New measurement and method of measurement (for example comprise and during positioning sub-frame, measuring) are proposed.
Propose signaling and support to measure, it only is possible for example need in LPP and LPPa, allowing type RSRQ or the class current RSRQ of SINR-and RSRP in PRS measurements then, its unactual with locate relevant.
The new chance of fingerprint localization method (for example AECID) strengthens the accuracy in the LTE location.Algorithm output can be used in E-UTRAN sub-district global identifier in addition, and (E-UTRAN Cell Global Identifier ECGI) generates location estimation in the method.
The embodiment that being used to of proposing located the method that neighbor cell list selects considers that the existing method in present technique field and the shortcoming of mode (not being used in LTE as if them) design.
Measurement that proposes also capable of using and tolerance for example are used for radio net planning, comprising: for example can be to the input of network O&M piece and also be used in network from optimized sub-district ID planning and/or configuration/optimization again.Another possibly used is that UE follows the trail of.
If introduce new measurement, then radio base station 110,120 is had that influence-these are measured at least can to notify radio base station 110,120, especially if their use is not limited to locate.But even, can influence LPPa and this is between first base station 110 and location node 140 for the location.
In addition, generally speaking core network be the same-for example, if new measurement will be used for general O&M.
Embodiment discloses the characteristic of signal new LPP or LPPa characteristic; About measuring and method of measurement, it can be generalized to the reference signal that is used to locate, and it can comprise PRS and CRS.And, the application of the embodiment that measures about current description, for example PRS power control, neighbor cell selection etc.In addition,, not necessarily be limited to disclosed method of measurement, be used for adjacent selection in sub-district and reference cell and select about using the method for the tolerance of being discussed.Attention: the also extensible neighbor cell that is used for of the application of the optimization method that is generally speaking proposed and the set of maybe even measure is selected; Not necessarily only be used for the location; Yet be used for general operation, administer and maintain (Operation; Administration, and Maintenance, OAM).It is that another possibly used that UE follows the trail of.In addition, the tolerance of being discussed is capable of using in strengthening mixed positioning.
Can realize being used for this mechanism together with the computer program code of the function that is used for carrying out this programme through one or more processors (the for example processor in location node 140, the localizing objects node 130 or the for example processor in first base station 110) in the relevant mechanism of the signal measurement of LTE radio circuit.Also can provide the said procedure code as computer program, for example with the form of the data medium of carrying the computer program code that when being loaded into localizing objects node 130, location node 140 or radio base station 110, is used to carry out this method.Such carrier can be the form with CD ROM dish.Yet with other data medium (for example memory stick) is feasible.Also can provide computer program code as the program code on the server and download to localizing objects node 130, location node 140 or radio base station 110.
Those skilled in the art with interests of the instruction that proposes in preceding text description and the associated drawings will expect the modification and other embodiment of disclosed method and device.Therefore, be appreciated that the disclosure is not limited to disclosed specific embodiment and modification is intended to be contained in the scope of the present disclosure with other embodiment.Though can adopt concrete term in this article, they are purposes of using and do not start from restriction with general and descriptive meaning.
Some specific embodiments
Be used to measure from the received signal power level of sub-district and noise power, the estimation method from the received signal power level of different districts, wherein measuring is to locate or only on the reference signal that positioning sub-frame signals, carry out being used for.
UE is configured to during positioning sub-frame carrying out signal measurement about the reference signal of location reference signals or only the signal that signals with positioning sub-frame from radio base station 110 being carried out signal measurement, and wherein UE also is arranged to separately the signal measurement to location node 140 or radio base station 110 each positioning sub-frame of report.
LTE location protocol ' LPP ' or LTE location protocol annex ' LPPa ' comprise location reference signals or the signal that is used for locating or the signal measurement of the signal that generally speaking signals at positioning sub-frame.
Method in the location node 140 uses tolerance to be used for the adjacent selection in sub-district and reference cell is selected.
Method in the location node 140, wherein this method uses tolerance to be used to strengthen mixed positioning.
Method in the location node 140 is obtained the neighbor cell list of UE according to any of Fig. 5 A or 5B (wherein tabulation be used for location, general O&M or UE follow the trail of).
Fig. 6It is the schematic block diagram of the embodiment of this method in the illustrated position destination node 130.Can by UE or for example the base station, slightly node waits and representes localizing objects node 130.This method purpose is that reference signal is carried out measurement comes in cordless communication network 100, to locate or enable location based services.Therefore, measurement can be relevant with the received signal power and/or the quality of reference signal.Positioning sub-frame is that low interfering subframe and reference signal can be for example location reference signals (PRS) or cell specific reference signal (CRS).
According to some embodiment, cordless communication network 100 can comprise first base station 110, plays the service that is used for localizing objects node 130 or the effect of reference base station.According to some embodiment, cordless communication network 100 can comprise location node 140 in addition.
This method can comprise a plurality of action 601-607, so that correctly carry out the measurement to reference signal.According to different embodiment, can carry out action 601-607 according to being different from the order of enumerating indication slightly.In addition, should notice that some actions are optional, it is indicated by the dotted line among Fig. 6, and can only be comprised according to some embodiment.
This action is optional and can carries out in certain embodiments.
Can receive request from network node 110,120,140 and be used to confirm that localizing objects node 130 can be in the measurement of positioning sub-frame execution to reference signal.
This action is optional and can carries out in certain embodiments.
Alternatively information is sent to network node 110,120,140, confirms that localizing objects node 130 can be to the measurement of reference signal execution reference signal on positioning sub-frame.
Receive reference signal from network node 110,120.According to some embodiment, network node 110,120 can be base station 110,120 or beacon apparatus.
According to some embodiment, receive the request of measuring from first base station 110 alternatively for reference signal, triggered location destination node 130 is carried out the measurement to reference signal at least one positioning sub-frame.
Identification is included at least one positioning sub-frame in the reference signal that is received.Can independently carry out the action that identification is included at least one positioning sub-frame in the reference signal that is received, wherein use or do not use any reference signal configuration information by localizing objects node 130.
On at least one positioning sub-frame of discerning or during carry out measurement to reference signal.
Be included in the positioning sub-frame in the reference signal that is received through identification, between positioning sub-frame and other subframe, differentiate and only on positioning sub-frame, carry out and measure, can improve the accuracy of measurement.Because the influence that positioning sub-frame possibly still less be interfered is favourable so on these subframes, carry out measurement.
According to some embodiment,, can carry out measurement alternatively to reference signal when the location occurring during opportunity or when triggering by location protocol.According to some embodiment, optionally each carrier wave is carried out the measurement to reference signal.According to some embodiment, can on a plurality of carrier waves, carry out measurement, and can in each combination or independent carrier wave positioning reporting, transmit measurement in addition reference signal to reference signal.
According to some embodiment, can be alternatively for carrying out measurement to reference signal with the as many antenna port of port number that is used to transmit reference signal, wherein reference signal is to be transmitted and be used for location survey by network node 110,120.
According to some embodiment, can carry out different measuring to having the different carrier that is included in the indication in the reference signal measurement report to reference signal.According to some embodiment, the measurement of reference signal being used to of carrying out being located purpose can be different from the measurement that is used for the mobility purpose and carries out.
This action is optional and can carries out in certain embodiments.
Can alternatively the measurement to reference signal be sent to network node 110,120,140, make use the signal measurement that is transmitted enable the confirming of geographical position of localizing objects node 130.Therefore, the position of localizing objects node 130 confirms and can be carried out by any suitable network node in base station 110 or base station 120 or location node 140 or the network 100.
Yet; Attention: can use measurement by localizing objects node 130 self or by the entities that are included in the localizing objects node 130 according to some embodiment, so that use the signal measurement cause localizing objects node 130 that is transmitted self to enable the confirming of geographical position of localizing objects node 130 to reference signal.
According to some embodiment, can in each combination or independent carrier wave positioning reporting, transmit performed measurement, and/or for transmitting performed measurement with the as many antenna port of the port number of the reference signal that is used for location survey.
This action is optional and can carries out in certain embodiments.
The measurement that use is performed to reference signal can be confirmed the geographical position of localizing objects node 130 alternatively.
According to some embodiment, can the performed measurement to reference signal be used in the enhanced positioning method, for example fingerprint localization method, the identification of self adaptation enhancement type district (AECID) and/or mixed positioning.
Yet,, can the performed measurement to reference signal be used in reference cell and select and/or locate the neighbor lists selection according to some embodiment.According to some embodiment, when carrying out mobility or general provided for radio resources management measurement, can get rid of positioning sub-frame.
Fig. 7It is the block diagram that diagram is included in the embodiment of the device 700 in the localizing objects node 130.According to some embodiment, the localizing objects node can comprise UE.The measurement more any or that all be used for carrying out reference signal that device 700 is configured among the manner of execution action 601-607 is used for locating or enable location based services at cordless communication network 100.Device 700 comprises receiver 710, is configured to receive the reference signal from network node 110,120.In addition, device 700 comprises processor 720.Processor 720 is configured to discern at least one positioning sub-frame that is included in the reference signal that is received, and at least one positioning sub-frame of discerning, carries out the measurement to reference signal.
Can represent processor 720 by for example CPU (CPU), processing unit, microprocessor or other processing logic soluble and execution command.Processor 720 also can be carried out data processing function, is used for input, output and processing (comprising data buffering) and the device controlled function (for example call treatment control, user interface control etc.) of data.
In addition, according to some embodiment, device 700 can comprise conveyer 730.According to some embodiment, optional conveyer 730 can be arranged to transmit to confirm that localizing objects node 130 can carry out the information of the measurement of the reference signal network node 110,140 to the such information of request.In addition, optional conveyer 730 can be arranged to the measurement of transmission to reference signal, so that can use the measurement that is transmitted to enable the confirming of geographical position of localizing objects node 130.
According to some embodiment, processor 720 is also configurable for using performed measurement to confirm the geographical position of localizing objects node 130.
For clarity sake, from Fig. 7, omit any internal electronic equipment of device 700, it is not fully indispensable for understanding this method.
The computer program code of can be through the one or more processors 720 in the localizing objects node 130 and being used for carrying out the function of this action 601-607 is implemented in the action 601-607 that device 700 is carried out.Therefore, in the time of in being loaded into processor 720, comprise that the computer program of the instruction of the action 601-607 that is used for carrying out localizing objects node 130 can be carried out the measurement to reference signal at least one positioning sub-frame.
At least some the form of data medium of computer program code that for example, can be used for when carrying in being loaded into processor 720 carrying out according to the action 601-607 of this programme provides aforementioned calculation machine program product.Data medium can be for example hard disk, CD ROM dish, memory stick, light storage device, magnetic memory apparatus or any other suitable medium (dish or the band that for example can keep machine-readable data).The computer program code that also can be used as on the server provides computer program and remotely downloads to localizing objects node 130 (for example connecting through internet or in-house network).
Fig. 8It is the schematic block diagram of the example of the method in the network node 110,120,140 that is shown in the cordless communication network 100.This method purpose is in cordless communication network 100, to provide the location or enables location based services.
Therefore according to some embodiment; Cordless communication network 100 can comprise first base station 110; Play the effect of the serving BS of localizing objects node 130, and wherein network node 110,120,140 can be first base station 110 of positioning service destination node 130 or any other base station 120 or the network node in location node 140 or the cordless communication network 100.
In order suitably to obtain the measurement to reference signal from localizing objects node 130, this method can comprise a plurality of action 801-809.
Yet some that should note described action are optional and only comprise in certain embodiments.In addition, it should be noted that and to carry out action 801-809 and some (for example move 803 with action 804) in them can carry out simultaneously or with the order of arranging again according to different slightly orders.In addition, should notice that some described actions are optional, for example move 803-809, it is indicated by the dotted line among Fig. 8.This method can comprise following action:
Can be alternatively the request of on positioning sub-frame, carrying out the measurement of reference signal be sent to localizing objects node 130.
According to some embodiment, before the measurement that request localizing objects node 130 is carried out reference signal, can carry out inspection, whether inspection localizing objects node 130 can carry out the measurement to reference signal on positioning sub-frame.
From the measurement of localizing objects node 130 receptions to reference signal.Carried out measurement on at least one positioning sub-frame in reference signal to reference signal by 130 identifications of localizing objects node.According to some embodiment, receive action to the measurement of reference signal from localizing objects node 130 and can comprise based on cell specific reference signal (CRS) and measuring or location reference signals (PRS) is measured and derived the signal quality measured of reference signal.
Use received the geographical position of localizing objects node 130 is confirmed in the measurement of reference signal.
This action is optional and can only carries out in certain embodiments.
According to some embodiment, location reference signals (PRS) can dispose based on the measurement to reference signal that is received alternatively.
This action is optional and can only carries out in certain embodiments.
According to some embodiment, can alternatively the measurement to reference signal that is received from localizing objects node 130 be categorized into the group of the reference signal measurement that is received.
This action is optional and can only carries out in certain embodiments.
According to some embodiment, can generate the neighbor cell list that is received alternatively to the group of the measurement of reference signal, wherein will from localizing objects node 130 received to the measurement classification of reference signal in groups.
This action is optional and can only carries out in certain embodiments.
According to some embodiment, can store the neighbor cell list that generated (related) alternatively with the group that is received to the measurement of reference signal, wherein will divide in groups from the measurement that localizing objects node 130 is received to reference signal.
The storage of the neighbor cell list that can in database, generate thus.
This action is optional and can only carries out in certain embodiments.
According to some embodiment, can confirm poor received signal power and/or the signal quality of measurement indication that is received from localizing objects node 130 alternatively to reference signal.
This action is optional and can only carries out in certain embodiments.
Can discern alternatively and the relevant sub-district of the measurement to reference signal that is received, confirm it and indicated poor received signal power and/or signal quality.
This action is optional and can only carries out in certain embodiments.
Can extract the sub-district of being discerned from the neighbor cell list of being stored.Therefore can from the neighbor lists of being stored, get rid of and poor received signal power and/or the related sub-district of signal quality, so that localizing objects node 130 can avoid waiting to connect that sub-district.
Fig. 9It is the block diagram that diagram is included in the embodiment of the device 900 in the network node 110,120,140.Network node 110,120,140.Device 900 is configured to carry out at least some of action 801-809, is used for locating or enable location based services at cordless communication network 100.
For clarity sake, from Fig. 9, omit any internal electronic equipment of device 900, it is not fully indispensable for understanding this method.
Therefore use the measurement that is received to enable the confirming of geographical position of localizing objects node 130 to reference signal.
According to some embodiment, device 900 also comprises conveyer 920, is configured to transmit radio signal to localizing objects node 130.
Represent processor 930 by for example CPU, processing unit, microprocessor or other processing logic soluble and execution command.Processor 930 can be carried out input, the output that is used for data and the data processing function of handling (comprising data buffering) and device controlled function (for example call treatment control, user interface control etc.).
Should notice that the described unit 910-930 that are included in the device 900 can be considered the entity of independent logic, but the independent physical entity of unnecessary conduct.Any, some or all of unit 910-930 is included in or is arranged in jointly in the identical physical location.Yet in order to promote functional understanding of device 900, included unit 910-930 is illustrated as the independent physical location among Fig. 9.
Can use in the network node 110,120,140 one or more processors 930 together with the computer program code of the function that is used for carrying out this action 801-809 realize/the described action 801-809 of performer 900 any, all or some.Therefore; In the time of in being loaded into processor 930, the computer program that comprises the instruction of the action 801-809 that is used for carrying out network node 110,120,140 can be carried out the method that the measurement that is used for obtaining to reference signal is used in cordless communication network 100 location or enables location based services.
At least some the form of data medium of computer program code that for example, can be used to when carrying in being loaded into processor 930 to carry out according to the action 801-809 of this programme provides aforementioned calculation machine program product.This data medium can be for example hard disk, CD ROM dish, memory stick, light storage device, magnetic memory apparatus or any other suitable medium (dish or the band that for example can keep machine-readable data).The computer program code that also can be used as on the server provides computer program and remotely downloads to network node 110,120,140 (for example connecting through internet or in-house network).
Employed term is not intended for the restriction of this method and device in the detailed description of illustrated particular exemplary embodiment in the accompanying drawings.As used herein, singulative " " and " being somebody's turn to do " are intended to also comprise plural form, only if obvious statement is arranged in addition.Also will understand; When using in this manual; Term " comprises " and/or the existence of " comprising " regulation characteristic, integer, step, operation, key element and/or parts of being stated, but does not get rid of the existence or the increase of one or more further features, integer, step, operation, key element, parts and/or its group.To understand when mentioning key element " connection " or " coupling " to another key element, it can directly connect or be coupled to another key element maybe can exist the key element between the centre.In addition, as used herein " connection " or " coupling " can comprise wireless connections or coupling.As used herein, term " and/or " any and all combinations of the project of listing of one or more associations comprised.
Claims (19)
1. the method in the localizing objects node (130) is used for carrying out measurement to reference signal and locatees or enable location based services at cordless communication network (100), and said method comprises:
Receive (603) said reference signal from network node (110,120),
Identification (604) is included at least one positioning sub-frame in the reference signal that is received, and
On at least one positioning sub-frame of discerning, carry out (605) measurement to said reference signal.
2. method according to claim 1 also comprises:
Transmit (606) performed measure network node (110,120,140).
3. method according to claim 2, wherein said network node (110,120,140) are the base station of the said localizing objects node of service (130) or any other base station or the network node in location node (140) or the said cordless communication network (100).
4. method according to claim 1 also comprises:
Use performed measurement to confirm the geographical position of (607) said localizing objects nodes (130).
5. according to each the described method in the aforementioned claim, wherein performed measurement comprises received signal power and/or mass measurement, and wherein said positioning sub-frame is low interfering subframe.
6. according to each the described method in the aforementioned claim, wherein said reference signal is location reference signals PRS or cell specific reference signal CRS.
7. according to each the described method among the claim 2-6; Comprise optionally each carrier wave or on a plurality of carrier waves, said reference signal is carried out (605) and measure; And in each combination or independent carrier wave positioning reporting, transmit (606) performed measurement, and/or be used for and be used for the as many antenna port of port number of the reference signal of location survey.
8. according to each the described method among the claim 1-7, also comprise:
Receive (601) request, be used to confirm that said localizing objects node (130) can carry out (605) said reference signal measurement on said positioning sub-frame from said network node (110,120), and
Transmission (602) the said localizing objects nodes of affirmation (130) can be carried out the information of (605) said reference signal measurement to said network node (110,120) on said positioning sub-frame.
9. according to each the described method among the claim 1-8, wherein, carry out said measurement to said reference signal when the location occurring during opportunity or when triggering by location protocol.
10. according to each the described method among the claim 1-9; Wherein performed reference signal measurement is used in that reference cell is selected and/or the location neighbor lists is selected, and/or for example also is utilized in the localization methods such as fingerprint localization method, the identification of self adaptation enhancement type district and/or mixed positioning.
11. the device (700) in the localizing objects node (130) is used for carrying out measurement to reference signal and locatees or enable location based services at cordless communication network (100), said device (700) comprising:
Receiver (710) is configured to receive the reference signal from network node (110,120),
Processor (720) is configured to discern at least one positioning sub-frame that is included in the reference signal that is received, and
Said processor (720) also is configured at least one positioning sub-frame of discerning, carry out the said measurement to said reference signal.
12. device according to claim 11 (700) also comprises:
Conveyer (730) is configured to transmit the performed network node (110,120,140) that measures.
13. according to claim 11 or 12 described devices (700), wherein said processor (720) also is configured to use performed measurement to confirm the geographical position of said localizing objects node (130).
14. the method in the network node (110,120,140) that is included in cordless communication network (100) is used in cordless communication network (100) location or enables location based services, said method comprises:
Receive (801) measurement from localizing objects node (130), said measurement is carried out at least one positioning sub-frame by said localizing objects node (130) identification in reference signal, and
Use the measurement that is received to confirm the geographical position of (802) said localizing objects nodes (130).
15. method according to claim 14, wherein reception (801) action comprises based on cell specific reference signal CRS measurement or location reference signals PRS measurement derives the signal quality measured of said reference signal.
16. according to each the described method among the claim 14-15, wherein said network node (110,120,140) is the base station (110) of the said localizing objects node of service (130) or any other base station in location node (140) or the said cordless communication network (100).
17. each the described method according among the claim 14-16 also comprises:
(803) location reference signals PRS is disposed in measurement based on being received.
18. each the described method according among the claim 14-17 also comprises:
The group that the reference signal that the measurement that received classification (804) is become to be received is measured,
Generate the neighbor cell list of the group of (805) said reference signal measurement that receives,
The neighbor cell list that storage (806) is generated,
Confirm whether (807) indicate poor received signal power and/or signal quality from the measurement that said localizing objects node (130) is received,
The received signal power and/or the relevant sub-district of signal quality of identification (808) and said difference, and
From the neighbor cell list of being stored, extract the sub-district that (809) are discerned.
19. the device (900) in the network node (110,120,140) is used in cordless communication network (100) location or enables location based services, said device (900) comprising:
Receiver (910); Be configured to receive measurement from localizing objects node (130); Said measurement in reference signal by carrying out by said localizing objects node (130) at least one positioning sub-frame of said localizing objects node (130) identification, and
Processor (930) is configured to use the measurement that is received to confirm the geographical position of said localizing objects node (130).
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010800661790A CN102823308A (en) | 2010-02-12 | 2010-10-06 | Methods and arrangements for performing measurements in a wireless communication network for positioning or for enabling location- based services |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2010/000198 WO2011097760A1 (en) | 2010-02-12 | 2010-02-12 | Signal measurements for positioning, signalling means for their support and methods of utilizing the measurements to enhance positioning quality in lte |
| CNPCT/CN2010/000198 | 2010-02-12 | ||
| PCT/SE2010/051079 WO2011099910A1 (en) | 2010-02-12 | 2010-10-06 | Methods and arrangements for performing measurements in a wireless communication network for positioning or for enabling location- based services |
| CN2010800661790A CN102823308A (en) | 2010-02-12 | 2010-10-06 | Methods and arrangements for performing measurements in a wireless communication network for positioning or for enabling location- based services |
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| CN102823308A true CN102823308A (en) | 2012-12-12 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016041146A1 (en) * | 2014-09-16 | 2016-03-24 | 华为技术有限公司 | Mobile terminal positioning method, base station and node |
| CN105578404A (en) * | 2014-10-17 | 2016-05-11 | 中兴通讯股份有限公司 | Positioning method and corresponding terminal and system |
| CN107113769A (en) * | 2014-11-28 | 2017-08-29 | 高通股份有限公司 | Interference mitigation for location reference signals |
| CN109155983A (en) * | 2016-05-18 | 2019-01-04 | 高通股份有限公司 | Narrowband positioning signal design scheme and process |
| CN109792593A (en) * | 2016-09-30 | 2019-05-21 | 高通股份有限公司 | Location reference signals enhancing |
| CN110073628A (en) * | 2016-10-24 | 2019-07-30 | 瑞典爱立信有限公司 | For realizing the method and network node of the measurement to reference signal |
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| WO2024011614A1 (en) * | 2022-07-15 | 2024-01-18 | Zte Corporation | Positioning with carrier phase |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009129413A2 (en) * | 2008-04-16 | 2009-10-22 | Qualcomm Incorporated | Methods and apparatus for uplink and downlink inter-cell interference coordination |
| WO2010107356A1 (en) * | 2009-03-17 | 2010-09-23 | Telefonaktiebolaget Lm Ericsson (Publ) | An arrangement and a method in a communication network node, an arrangement and a method in a user equipment in a radio communications system |
| WO2010144765A1 (en) * | 2009-06-12 | 2010-12-16 | Motorola Mobility, Inc. | Interference control, sinr optimization and signaling enhancements to improve the performance of otdoa measurements |
-
2010
- 2010-10-06 CN CN2010800661790A patent/CN102823308A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009129413A2 (en) * | 2008-04-16 | 2009-10-22 | Qualcomm Incorporated | Methods and apparatus for uplink and downlink inter-cell interference coordination |
| WO2010107356A1 (en) * | 2009-03-17 | 2010-09-23 | Telefonaktiebolaget Lm Ericsson (Publ) | An arrangement and a method in a communication network node, an arrangement and a method in a user equipment in a radio communications system |
| WO2010144765A1 (en) * | 2009-06-12 | 2010-12-16 | Motorola Mobility, Inc. | Interference control, sinr optimization and signaling enhancements to improve the performance of otdoa measurements |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105830509A (en) * | 2014-09-16 | 2016-08-03 | 华为技术有限公司 | Mobile terminal positioning method, base station and node |
| WO2016041146A1 (en) * | 2014-09-16 | 2016-03-24 | 华为技术有限公司 | Mobile terminal positioning method, base station and node |
| US10397893B2 (en) | 2014-09-16 | 2019-08-27 | Huawei Technologies Co., Ltd. | Mobile terminal positioning method, base station, and node |
| CN105830509B (en) * | 2014-09-16 | 2019-10-18 | 华为技术有限公司 | Mobile terminal locating method, base station and node |
| CN105578404A (en) * | 2014-10-17 | 2016-05-11 | 中兴通讯股份有限公司 | Positioning method and corresponding terminal and system |
| CN105578404B (en) * | 2014-10-17 | 2021-05-11 | 中兴通讯股份有限公司 | Positioning method and corresponding terminal and system |
| CN107113769A (en) * | 2014-11-28 | 2017-08-29 | 高通股份有限公司 | Interference mitigation for location reference signals |
| CN107113769B (en) * | 2014-11-28 | 2020-05-26 | 高通股份有限公司 | Interference mitigation for positioning reference signals |
| US10716084B2 (en) | 2016-05-18 | 2020-07-14 | Qualcomm Incorporated | Narrowband positioning signal design and procedures |
| CN109155983A (en) * | 2016-05-18 | 2019-01-04 | 高通股份有限公司 | Narrowband positioning signal design scheme and process |
| CN109792593A (en) * | 2016-09-30 | 2019-05-21 | 高通股份有限公司 | Location reference signals enhancing |
| CN110073628A (en) * | 2016-10-24 | 2019-07-30 | 瑞典爱立信有限公司 | For realizing the method and network node of the measurement to reference signal |
| CN112075109A (en) * | 2018-04-23 | 2020-12-11 | 高通股份有限公司 | Utilizing DRX/CDRX parameters to save power during observed time difference of arrival (OTDOA) sessions |
| CN112075109B (en) * | 2018-04-23 | 2022-07-26 | 高通股份有限公司 | Utilizing DRX/CDRX parameters to save power during observed time difference of arrival (OTDOA) sessions |
| CN113424610A (en) * | 2019-02-11 | 2021-09-21 | 上海诺基亚贝尔股份有限公司 | Enhanced positioning mechanism based on OTDOA |
| CN113424610B (en) * | 2019-02-11 | 2023-09-22 | 上海诺基亚贝尔股份有限公司 | Enhanced positioning method, device and computer readable medium based on OTDOA |
| CN113728578A (en) * | 2019-04-25 | 2021-11-30 | 高通股份有限公司 | System and method for positioning reference signal staggering |
| CN113728578B (en) * | 2019-04-25 | 2024-05-07 | 高通股份有限公司 | System and method for positioning reference signal staggered configuration |
| US12047904B2 (en) | 2019-04-25 | 2024-07-23 | Qualcomm Incorporated | Positioning reference signal staggering configuration |
| WO2024011614A1 (en) * | 2022-07-15 | 2024-01-18 | Zte Corporation | Positioning with carrier phase |
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