CN104113824A - Method And Device For Performing Timing Measurement - Google Patents
Method And Device For Performing Timing Measurement Download PDFInfo
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- CN104113824A CN104113824A CN201410146199.9A CN201410146199A CN104113824A CN 104113824 A CN104113824 A CN 104113824A CN 201410146199 A CN201410146199 A CN 201410146199A CN 104113824 A CN104113824 A CN 104113824A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
Abstract
A method and apparatus for performing timing measurement for location estimation of an electronic device are provided, where the method includes the steps of: sending a pre-association broadcast request frame to trigger multiple responders in a wireless network system to initiate timing measurement; and performing timing measurement according to a plurality of timestamps, for determining a location of the electronic device, wherein for a specific responder of the responders, a first timestamp and a second timestamp within the plurality of timestamps respectively correspond to a time of departure (ToD) and a time of arrival (ToA) of a pre-association uni-cast response frame received from the specific responder, and a third timestamp and a fourth timestamp within the plurality of timestamps respectively correspond to a ToD and a ToA of an acknowledgement frame corresponding to the pre-association uni-cast response frame, the acknowledgement frame sent from the electronic device to the specific responder.
Description
Technical field
The present invention has about location estimation (location estimation), and especially has about the time-ordered measurement for electronic installation location estimation (timing measurement) method and relevant device.
Background technology
According to correlation technique, traditional electronic devices in Radio Network System can be designed in known wireless network system the position of 3 and this electronic installation to (flight) time of the flight between every bit (or Electromagnetic Wave Propagation time) wherein, determines its position.But may there are some problems in this.For instance, if will trigger respectively the time-ordered measurement of corresponding above-mentioned 3, need multiple requests.In another demonstration example, corresponding above-mentioned 3 carry out time-ordered measurement respectively before, conventionally need traditional electronic devices to send in addition explore frame (probe frame) and find peer (peer) device in Radio Network System, thereby cause the increase of traditional electronic devices power loss.More specifically, because the number of the exchange of frame in time-ordered measurement (exchange) is general proportional with the number of same stage arrangement and the frequency of renewal considered, in some cases (as renewal frequency increases, and/or the number of users that need to locate in Radio Network System is a lot), the overall channel capacity of Radio Network System may be also not.Therefore, need a kind of method, be used for improving the location estimation of electronic installation in Radio Network System.
Summary of the invention
In view of this, the invention provides a kind of time-ordered measurement method, for the location estimation of electronic installation, this time-ordered measurement method comprises: send pre-association broadcast request frame, start time-ordered measurement with the multiple respondents that trigger in Radio Network System; And carry out time-ordered measurement according to multiple timestamps, to determine the position of described electronic installation, a part in wherein said multiple timestamp is obtained from described multiple respondents, wherein, the pre-association unicast response frame that the respondent of at least one timestamp based on from described multiple respondents receives is determined; And do not set up actual association between described electronic installation and any respondent.
The present invention separately provides a kind of equipment, be used for carrying out time-ordered measurement so that electronic installation is carried out to location estimation, described equipment comprises at least a portion of described electronic installation, described equipment comprises: transceiver, be used for sending or receiving the information of described electronic installation, wherein said transceiver is used for sending pre-association broadcast request frame, starts time-ordered measurement with the multiple respondents that trigger in Radio Network System; Determination module, is coupled to described transceiver, is used for determining multiple timestamps; And time-ordered measurement module, be coupled to described determination module, be used for carrying out time-ordered measurement according to described multiple timestamps, to determine the position of electronic installation, the pre-association unicast response frame that wherein respondent of at least one timestamp based on from described multiple respondents receives is determined; And do not set up actual association between described electronic installation and any respondent.
By utilizing the present invention, can carry out better time-ordered measurement.
Most preferred embodiment of the present invention as detailed below.Read after the following description and drawings, have the knack of this skill person and can understand easily the present invention's spirit.
Brief description of the drawings
Fig. 1 carries out the schematic diagram of time-ordered measurement for the equipment of electronic installation location estimation according to first embodiment of the invention.
Fig. 2 is the schematic diagram that comprises according to an embodiment of the invention the Radio Network System of above-mentioned middle electronic installation embodiment illustrated in fig. 1.
Fig. 3 carries out the flow chart of time-ordered measurement for the method for electronic installation location estimation according to an embodiment of the invention.
Fig. 4 is the schematic diagram of relevant with method shown in Fig. 3 according to an embodiment of the invention control program.
Embodiment
In the middle of patent specification and claim, use some vocabulary to censure specific assembly.Person with usual knowledge in their respective areas should understand, and hardware manufacturer may be called same assembly with different nouns.Patent specification and claim are not used as distinguishing the mode of assembly with the difference of title, but the difference in function is used as the criterion of distinguishing with assembly.In the whole text, in the middle of specification and claims, be open term mentioned " comprising " or " comprising ", therefore should be construed to " comprise but be not limited to ".In addition, " coupling " word comprises directly any and is indirectly electrically connected means at this.Therefore, be coupled to one second device if describe a first device in literary composition, represent that this first device can directly be electrically connected in this second device, or be indirectly electrically connected to this second device through other devices or connection means.
Please refer to Fig. 1, Fig. 1 carries out the schematic diagram of time-ordered measurement for the equipment 100 of electronic installation location estimation according to first embodiment of the invention.Wherein, equipment 100 can comprise at least a portion (as part or all) of above-mentioned electronic installation.For instance, equipment 100 can comprise a part for above-mentioned electronic installation, and more specifically, equipment 100 can be at least one hardware circuit, as at least one integrated circuit in electronic installation (Integrated Circuit, IC).In another demonstration example, equipment 100 can be the whole of above-mentioned electronic installation.In another demonstration example, equipment 100 can comprise a system, and wherein said system comprises above-mentioned electronic installation, comprises the audio-frequency/video frequency system of above-mentioned electronic installation as can be.Electronic installation can be as mobile phone (as multifunctional mobile telephone), personal digital assistant (Personal Digital Assistant, or PC (as notebook computer (laptop computer)) etc., but the present invention is not limited to this PDA).
As shown in Figure 1, equipment 100 can comprise transceiver (transceiver) 120, is used for sending or reception information into electronic installation.Transceiver 120 can comprise transmitter and receiver (transmitter and receiver as used in wireless communication), and wherein one or more antenna of electronic installation can be coupled to transceiver 120.Equipment 100 also can comprise determination module 140 and time-ordered measurement module 160.Wherein determination module 140 can be coupled to transceiver 120, and time-ordered measurement module can be coupled to determination module 140.In a demonstration example, determination module 140 be used for determine timestamp (timestamp), time-ordered measurement module 160 is used for carrying out time-ordered measurement according to timestamp, to determine the position of electronic installation.Note that the just object for illustrating of above-mentioned module, not for limiting the present invention, the similar module that can realize similar functions all falls into scope of the present invention.In addition, above-mentioned module can realize by hardware (as processing unit) or software (as stored in impermanent computer-readable medium, and the procedure code of being carried out by processing unit) or firmware.In one embodiment, can carry out some program code retrieving from the storage module of electronic installation by processor, carry out the aforesaid operations of control appliance 100.Wherein, storage module is as hard disk drive (Hard Disk Drive, HDD) or nonvolatile memory (as flash memory).
According to the present embodiment, equipment 100 can, by utilizing transceiver 120 to send pre-association broadcast request frame (pre-association broadcast request frame), start time-ordered measurement with some triggering in Radio Network System with stage arrangement.As the response to pre-association broadcast request frame, can respectively pre-association unicast response frame (pre-association uni-cast response frame) be sent to electronic installation with stage arrangement, above-mentioned time-ordered measurement can carry out immediately.Therefore, electronic installation can be regarded as promoter (initiator), and can be regarded as respondent (responder) with stage arrangement.More specifically, promoter can adopt pre-association broadcast (or multicast) claim frame (as probe request or universal advertisement services (Generic Advertisement Service, GAS) claim frame) as time-ordered measurement request, require multiple respondents directly to carry out time-ordered measurement operation, as measured some interactive operation of the flight time (or Electromagnetic Wave Propagation time) between electronic installation and the respondent of each known location.For instance, each respondent can send pre-association unicast response frame (as probing response frame or GAS response frame) as time-ordered measurement frame.As for how in known wireless network system the position of 3 and electronic installation to the position of determining electronic installation flight time between every bit (or Electromagnetic Wave Propagation time) wherein, please obtaining more information with reference to IEEE (Institute of Electrical and Electronics Engineers, IEEE) 802.11 standards (as " IEEE802.11-2012 " standard) whenever necessary.
Compared with correlation technique, while adopting pre-association broadcast request frame to trigger multiple respondents to start time-ordered measurement, the total number of the switching frame of multiple same stage arrangements can significantly reduce simultaneously.Thus, just no longer need to, before time-ordered measurement report feedback, carry out point-to-point (peer-to-peer) IEEE802.11v time-ordered measurement frame signal exchange (handshaking) of correlation technique.In addition, among the time-ordered measurement process that all can trigger at pre-association broadcast request frame due to all required information, (or before) obtains, and exploratory stage and spent time and power of information inquiry stage extra in correlation technique all can be saved.For instance, the position of 3 can be carried by above-mentioned pre-association unicast response frame, therefore can, after pre-association broadcast request frame sends, be sent to immediately electronic installation.In another demonstration example, the position of 3 can from internet, other local retrievals of (Internet) or Radio Network System obtain in advance, instead of are sent during time-ordered measurement by respondent.
Fig. 2 is the schematic diagram that comprises according to an embodiment of the invention the Radio Network System 200 of above-mentioned middle electronic installation embodiment illustrated in fig. 1, and wherein Radio Network System 200 can be used as the demonstration example of the Radio Network System in embodiment shown in Fig. 1.As shown in Figure 2, the electronic installation in the present embodiment (being denoted as " STA " in Fig. 2, wherein " STA " representative " platform (station) ") may go about and move to another point from any due to the user who carries it.For instance, the user of carrying electronic devices may go to the centre of region 205-1, equipment 100 can be controlled electronic installation and send single request (broadcast or multicast, in Fig. 2, be denoted as " request "), to start to carry out time-ordered measurement, for the location estimation in 205-1 centre position, corresponding region, some same stage arrangements in Radio Network System 200 (being denoted as " AP " in Fig. 2, wherein " AP " representative " access point ") send respectively response (being denoted as " response " in Fig. 2) to electronic installation after being triggered subsequently.Wherein, in the 205-1 of region, the upper symbol " 1 " indicating of request and response and " 2 " expression request are first sent, and send after response.Similarly, the user of carrying electronic devices may go to the centre of region 205-2, equipment 100 can be controlled electronic installation and send single request (broadcast or multicast) to start to carry out time-ordered measurement, for the location estimation in 205-2 centre position, corresponding region, thus the position of renewal electronic installation.Similarly, the user of carrying electronic devices may go to the centre of region 205-3, equipment 100 can be controlled electronic installation and send single request (broadcast or multicast) to start to carry out time-ordered measurement, for the location estimation in 205-3 centre position, corresponding region, thus the position of renewal electronic installation.
Fig. 3 carries out the flow chart of time-ordered measurement for the method 300 of electronic installation location estimation according to an embodiment of the invention.Method 300 shown in Fig. 3 can be used for the equipment 100 shown in Fig. 1 (be particularly useful for embodiment illustrated in fig. 2 in electronic installation STA), and can be carried out by processor, as the procedure code by storing in processor is carried out.This method is described below:
In step 310, equipment 100 sends pre-association broadcast request frame as above by transceiver 120, starts time-ordered measurement with the multiple respondents that trigger in Radio Network System (as Radio Network System 200).For instance, pre-association broadcast request frame can be probe request.In another demonstration example, pre-association broadcast request frame can be GAS claim frame.In another demonstration example, pre-association broadcast request frame also can be pre-association multicast claim frame.
In step 320, equipment 100 carries out time-ordered measurement according to multiple timestamps, and to determine the position of electronic installation, wherein the part in above-mentioned multiple timestamp can be obtained from respondent, and another part can be determined by electronic installation.For instance, in multiple timestamps, at least one timestamp can be determined by the pre-association unicast response frame (the pre-association unicast response frame described in embodiment as shown in Figure 1) based on receiving from one of them respondent.More specifically, electronic installation and any respondent all do not set up actual association.
According to the present embodiment, for the specific response person (as one of above-mentioned respondent) in respondent, very first time stamp t1 in multiple timestamps and the second timestamp t2 (respondent's) time of leaving (Time of Departure of the corresponding pre-association unicast response frame receiving from above-mentioned specific response person respectively, ToD) and arrive (electronic installation) time (Time of Arrival, ToA), confirm (acknowledgement and the 3rd timestamp t3 in multiple timestamps and the 4th timestamp t4 are corresponding respectively, ACK) ToD of frame and ToA, the wherein corresponding pre-association unicast response of above-mentioned acknowledgement frame frame, by the electronic installation person that is sent to specific response.For instance, in the time that pre-association broadcast request frame is probe request, pre-association unicast response frame also can be probing response frame.In another demonstration example, in the time that pre-association broadcast request frame is GAS claim frame, pre-association unicast response frame also can be GAS response frame.
More specifically, above-mentioned specific response person can represent the each respondent at least a portion (as part or all) of respondent.For instance, specific response person can represent the each respondent in a part of respondent.Note that this,, just in order to illustrate, has no intent to limit the present invention.In another demonstration example, specific response person can represent each respondent.
According to some embodiment of the present invention, some variation of embodiment as shown in Figure 3, in the time may needing to upgrade the position of electronic installation, the whole workflow of method 300 can repeat.For instance, after the operation of step 320 completes, can again enter step 310, to upgrade the position of electronic installation.
Fig. 4 is the schematic diagram of relevant with method 300 shown in Fig. 3 according to an embodiment of the invention control program.Wherein, electronic installation (in order to understand better, being denoted as " promoter " in Fig. 4) can operate under the control of equipment 100.For specific response person as above, timestamp { t1, t2, t3, t4} can be identical with the timestamp t1-t4 in embodiment shown in Fig. 3, and another group timestamp t1 ', t2 ', t3 ', t4 ' } can represent the relevant timestamp of another respondent in the multiple respondents that mention in corresponding step 310.More specifically, another respondent can be any other respondent who mentions in step 310, any respondent who mentions in the step 310 except above-mentioned specific response person.
As shown in Figure 4, promoter (is the electronic installation in the present embodiment, more specifically for equipment 100) adopt single request frame to trigger multiple respondents to start time-ordered measurement, wherein single request frame can be broadcast request frame or multicast claim frame, pre-association broadcast request frame described above (as probe request or GAS claim frame) etc.Respondent's time-ordered measurement associative operation is triggered by same claim frame, more specifically, can be triggered simultaneously.For instance, specific response person can send to promoter by one of unicast response frame shown in Fig. 4 (as the pre-association unicast response frame sending at timestamp t1).Next, promoter's (electronic installation, equipment 100 in the present embodiment more specifically, are transceiver 120) person that corresponding acknowledgement frame (for the sake of simplicity, Fig. 4 is denoted as " ACK ") can be sent to specific response.Because timestamp t1 and t4 can be obtained by specific response person (or crawl), and timestamp t2 and t3 can be obtained by promoter (or crawl), specific response person can send to promoter by time-ordered measurement report, wherein time-ordered measurement report portability timestamp t1 and t4, reports that by clean culture frame sends.And promoter can send another acknowledgement frame (for the sake of simplicity, Fig. 4 is denoted as " ACK "), to confirm to receive above-mentioned time-ordered measurement report.Therefore, promoter (electronic installation, the equipment 100 in the present embodiment, more specifically, for time-ordered measurement module 160) can determine or the estimation flight time (Time of Flight, ToF) relevant with the specific response person of transmission timing measurement report based on following equation:
ToF=((t4-t1)–(t3-t2))/2;
Wherein, (c*ToF) can be determined or be estimated as to the distance between promoter and specific response person, and symbol " c " represents light speed in a vacuum.That is to say, promoter's (electronic installation, the equipment 100 in the present embodiment more specifically, are time-ordered measurement module 160) can determine or estimate the distance between promoter and specific response person based on following equation:
D=(c*ToF)=c*((t4-t1)–(t3-t2))/2;
Wherein, symbol " D " represents the distance between promoter and specific response person.Thus, the distance B between electronic installation and specific response person can be used to determine the position of electronic installation.
Note that similar operation can be applicable to mutual between promoter and another respondent, more specifically, another respondent can be any other respondent who mentions in step 310, any respondent who mentions in the step 310 except above-mentioned specific response person.In another demonstration example, other respondents can send to promoter by another unicast response frame in the unicast response frame shown in Fig. 4, as the pre-association unicast response frame sending at timestamp t1 '.Next, promoter's (electronic installation, the equipment 100 in the present embodiment more specifically, are transceiver 120) can send to another respondent by corresponding acknowledgement frame (for the sake of simplicity, Fig. 4 is denoted as " ACK ").Because timestamp t1 ' and t4 ' can be obtained by another respondent (or crawl), and timestamp t2 ' and t3 ' can be obtained by promoter (or crawl), another respondent can send to promoter by time-ordered measurement report, wherein time-ordered measurement report portability timestamp t1 ' and t4 ', reports that by clean culture frame sends.And promoter can send another acknowledgement frame (for the sake of simplicity, Fig. 4 is denoted as " ACK "), to confirm to receive above-mentioned time-ordered measurement report.Therefore, promoter's (electronic installation, equipment 100 in the present embodiment, more specifically, for time-ordered measurement module 160) can determine or the estimation flight time (for avoid confusion, be denoted as ToF ') relevant with another respondent of transmission timing measurement report based on following equation:
ToF’=((t4’-t1’)–(t3’-t2’))/2;
Wherein, the distance between promoter and another respondent can be determined or be estimated as (c*ToF '), and symbol " c " represents light speed in a vacuum.That is to say, promoter's (electronic installation, the equipment 100 in the present embodiment more specifically, are time-ordered measurement module 160) can determine or estimate the distance between promoter and another respondent based on following equation:
D’=(c*ToF’)=c*((t4’-t1’)–(t3’-t2’))/2;
Wherein, symbol " D ' " represents the distance between promoter and another respondent.Thus, the distance B between electronic installation and another respondent ' can be used to determine the position of electronic installation.
In general, above-mentioned equation can unified representation be:
ToF (n)=((t4 (n)-t1 (n)) – (t3 (n)-t2 (n)))/2; And
D(n)=(c*ToF(n))=c*((t4(n)-t1(n))–(t3(n)-t2(n)))/2;
Wherein, considered respondent in the corresponding multiple respondents of index n, as respondent R (n) (specific response person described above or other respondents).Therefore, promoter and respondent R (n) can capture four timestamps, comprise and send response frame and corresponding ACK frame ToD and ToA separately.Wherein, respondent R (n) adopts clean culture report frame, so that its local timestamp capturing is offered to promoter.Thus, promoter can utilize the flight time set { ToF (n) } that multiple timestamps are determined or estimation is relevant with above-mentioned multiple respondents.In addition, promoter can further determine or estimate the distance set { D (n) } between promoter and each respondent { R (n) }, to determine promoter's position, the position of mentioning in step 320.If note that, known point has been enough to calculate the position of electronic installation, and promoter can utilize termination (terminate) frame to cancel measurement process, and wherein above-mentioned abort frame is broadcast or multicast frame.
Method 300 based on shown in Fig. 3, more specifically, based on the control program shown in Fig. 4, equipment 100 can carry out above-mentioned time-ordered measurement according to multiple timestamps, and does not need first between promoter's (being electronic installation) and any respondent { R (n) }, to set up associated.For instance, equipment 100 can carry out above-mentioned time-ordered measurement according to multiple timestamps, and need between promoter's (being electronic installation) and any respondent { R (n) }, not set up in advance associated.Compared with correlation technique, in the Radio Network System of employing above-described embodiment, the number of frame exchange can effectively reduce.
By utilizing the present invention, can carry out better time-ordered measurement.One of advantage of the present invention is only to utilize a request (more specifically, being a request that is sent to multiple same stage arrangements from electronic installation) can start immediately to carry out time-ordered measurement, for location estimation.In addition,, compared with correlation technique, in Radio Network System, the number of frame exchange can effectively reduce.Thus, cpable of lowering power loss, also can prevent the inadequate problem of overall channel capacity in Radio Network System.
Although the present invention discloses as above with regard to preferred embodiment, so it is not intended to limiting the invention.Persons of ordinary skill in the technical field of the present invention, without departing from the spirit and scope of the present invention, when being used for a variety of modifications and variations.Therefore, protection scope of the present invention is when defining and be as the criterion depending on previous claims.
Claims (14)
1. a time-ordered measurement method, for the location estimation of electronic installation, this time-ordered measurement method comprises:
Send pre-association broadcast request frame, start time-ordered measurement with the multiple respondents that trigger in Radio Network System; And
Carry out time-ordered measurement according to multiple timestamps, to determine the position of described electronic installation, the part in wherein said multiple timestamps is obtained from described multiple respondents,
Wherein, the pre-association unicast response frame that the respondent of at least one timestamp based on from described multiple respondents receives is determined; And do not set up actual association between described electronic installation and any respondent.
2. time-ordered measurement method as claimed in claim 1, is characterized in that, the part in described multiple timestamps is determined by described electronic installation.
3. time-ordered measurement method as claimed in claim 1, it is characterized in that, for the specific response person in described multiple respondents, very first time stamp in described multiple timestamp and the second timestamp be time departure and the time of advent of the corresponding pre-association unicast response frame from described specific response person reception respectively, the 3rd timestamp in described multiple timestamp and the 4th timestamp be time departure and the time of advent of corresponding acknowledgement frame respectively, wherein said acknowledgement frame is corresponding with the described pre-association unicast response frame receiving from described specific response person, be sent to described specific response person by described electronic installation.
4. time-ordered measurement method as claimed in claim 3, is characterized in that, wherein carries out time-ordered measurement according to multiple timestamps, further comprises with the step of the position of determining described device:
Determine the flight time relevant with described specific response person: ToF=((t4-t1) – (t3-t2))/2 based on following equation; Wherein, ToF represents the flight time, and t1, t2, t3 and t4 represent respectively described very first time stamp, described the second timestamp, described the 3rd timestamp and described the 4th timestamp.
5. time-ordered measurement method as claimed in claim 4, is characterized in that, wherein carries out time-ordered measurement according to multiple timestamps, further comprises with the step of the position of determining described electronic installation:
Determine the distance between described electronic installation and described specific response person: D=(c*ToF) based on following equation; Wherein, D represents the described distance between described electronic installation and described specific response person, and c represents light speed in a vacuum; And
Described distance between described electronic installation and described specific response person is used for determining the described position of described electronic installation.
6. time-ordered measurement method as claimed in claim 1, is characterized in that, described pre-association broadcast request frame is probe request, and described pre-association unicast response frame is probing response frame; Or described pre-association broadcast request frame is universal advertisement services claim frame, and described pre-association unicast response frame is universal advertisement services response frame.
7. time-ordered measurement method as claimed in claim 1, is characterized in that, replaces described pre-association broadcast request frame with pre-association multicast claim frame.
8. an equipment, is used for carrying out time-ordered measurement so that electronic installation is carried out to location estimation, and described equipment comprises at least a portion of described electronic installation, and described equipment comprises:
Transceiver, is used for sending or receive the information of described electronic installation, and wherein said transceiver is used for sending pre-association broadcast request frame, starts time-ordered measurement with the multiple respondents that trigger in Radio Network System;
Determination module, is coupled to described transceiver, is used for determining multiple timestamps; And
Time-ordered measurement module, is coupled to described determination module, is used for carrying out time-ordered measurement according to described multiple timestamps, and to determine the position of electronic installation,
The pre-association unicast response frame that wherein respondent of at least one timestamp based on from described multiple respondents receives is determined; And do not set up actual association between described electronic installation and any respondent.
9. equipment as claimed in claim 8, is characterized in that, the part in described multiple timestamps is determined by described electronic installation.
10. equipment as claimed in claim 8, it is characterized in that, for the specific response person in described multiple respondents, very first time stamp in described multiple timestamp and the second timestamp be time departure and the time of advent of the corresponding pre-association unicast response frame from described specific response person reception respectively, the 3rd timestamp in described multiple timestamp and the 4th timestamp be time departure and the time of advent of corresponding acknowledgement frame respectively, wherein said acknowledgement frame is corresponding with the described pre-association unicast response frame receiving from described specific response person, be sent to described specific response person by described electronic installation.
11. equipment as claimed in claim 10, is characterized in that, wherein said time-ordered measurement module is determined the flight time relevant with described specific response person: ToF=((t4-t1) – (t3-t2))/2 based on following equation; Wherein, ToF represents the flight time, and t1, t2, t3 and t4 represent respectively described very first time stamp, described the second timestamp, described the 3rd timestamp and described the 4th timestamp.
12. equipment as claimed in claim 11, is characterized in that, wherein said time-ordered measurement module is determined the distance between described electronic installation and described specific response person: D=(c*ToF) based on following equation; Wherein, D represents the described distance between described electronic installation and described specific response person, and c represents light speed in a vacuum; And
Described distance between described electronic installation and described specific response person is used for determining the described position of described electronic installation.
13. equipment as claimed in claim 8, is characterized in that, described pre-association broadcast request frame is probe request, and described pre-association unicast response frame is probing response frame; Or described pre-association broadcast request frame is universal advertisement services claim frame, and described pre-association unicast response frame is universal advertisement services response frame.
14. equipment as claimed in claim 8, is characterized in that, replace described pre-association broadcast request frame with pre-association multicast claim frame.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201361813198P | 2013-04-18 | 2013-04-18 | |
| US61/813,198 | 2013-04-18 | ||
| US13/962,940 US20140315572A1 (en) | 2013-04-18 | 2013-08-08 | Method for performing timing measurement for location estimation of an electronic device with aid of one request sent to multiple peer devices, and associated apparatus |
| US13/962,940 | 2013-08-08 |
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| Publication Number | Publication Date |
|---|---|
| CN104113824A true CN104113824A (en) | 2014-10-22 |
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| CN201410146199.9A Pending CN104113824A (en) | 2013-04-18 | 2014-04-11 | Method And Device For Performing Timing Measurement |
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| DE (1) | DE102013220828A1 (en) |
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| DE102013220828A1 (en) | 2014-10-23 |
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