Patent application EP18179229A (EP), filed 2018-06-22
Publication number: EP3418763A1
Title: METRIC FOR EVALUATING INDOOR POSITIONING SYSTEMS
Abstract: A method is disclosed comprising: obtaining a plurality of fingerprints, wherein each fingerprint comprises a piece of position information, and wherein each fingerprint is gathered in a venue (201); determining a first metric based at least partially on the obtained plurality of fingerprints, wherein the first metric is indicative of a quality value of the obtained plurality of fingerprints (202); determining a second metric based at least partially on the obtained plurality of fingerprints, wherein the second metric is indicative of a quality value of an infrastructure of the venue (203); determining a third metric indicative of an evaluation of the quality of the infrastructure of the venue based at least partially on the second metric (204); and outputting the first metric, the second metric and/or the third metric (205). It is further disclosed an according apparatus, computer program and system.
IPC codes: G01S   5/    02            A I
H04W   4/    02            A I
H04W   4/    33            A I
Claims: number: 1
text: A method, comprising:
number: 2
text: The method according to claim 1, wherein the quality value of the obtained plurality of fingerprints and/or the quality value of the infrastructure of the venue represent one of the following states i) to iii):
number: 3
text: The method according to any of claims 1 to 2, wherein in case the first metric indicates that the quality of the obtained plurality of fingerprints with respect to the position information is not sufficient, at least a part of the ouputted first metric represents that additional one or more fingerprints need to be obtained.
number: 4
text: The method according to any of claims 1 to 3, wherein in case the second metric indicates that the quality of the infrastructure is not sufficient, at least a part of the outputted second metric and/or outputted third metric represents that the infrastructure needs to be expanded, and after the expansion, additional one or more fingerprints need to be obtained.
number: 5
text: The method according to any of claims 1 to 4, wherein the first metric is determined based at least partially on a fingerprint density analysis, wherein the fingerprint density analysis comprises analyzing how many fingerprints of the plurality of fingerprints are associated with an area of the venue.
number: 6
text: The method according to any of claims 1 to 5, wherein the first metric is determined based at least partially on a similarity of nearby fingerprints analysis, wherein the similarity of nearby fingerprints analysis comprises analyzing whether or not at least two fingerprints associated with an area of the venue comprise at least similar identifiers of one or more radio nodes.
number: 7
text: The method according to any of claims 1 to 6, wherein the second metric is determined based at least partially on a number of radio nodes associated with the position information comprised by each of the plurality of fingerprints.
number: 8
text: The method according to any of claims 1 to 7, wherein the second metric is determined based at least partially on an average or a median value of one or more received signal strengths, wherein the average or the median value is calculated based on each of the one or more received signal strengths of the one or more radio nodes of each respective fingerprint.
number: 9
text: The method according to claim 8, wherein the second metric is determined at least partially based on a distribution analysis of one or more received signal strengths comprised by each fingerprint, wherein each of the one or more received signal strengths is compared to each other.
number: 10
text: The method according to any of claims 1 to 9, wherein the second metric is determined at least partially based on a distribution analysis of gradients of one or more received signal strengths, wherein the distribution analysis of gradients comprises checking the one or more received signal strengths of one or more radio nodes associated with one or more fingerprints of adjacent locations represented by the piece of position information of the respective fingerprints for received signal strength variability.
number: 11
text: An apparatus comprising at least one processor and at least one memory including computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to at least perform a method according to any of claims 1 to 10.
number: 12
text: An apparatus comprising means configured to perform a method according to any of claims 1 to 10.
number: 13
text: A computer program configured to cause a method according to any of claims 1-10 to be performed.
Office action: search_report, dated 2018-12-26
Rejection reasons: novelty_epc_54
Prior art cited: ref_id: WO2016087008A1
ref_type: patent
severity: background
ref_id: WO2016086993A1
ref_type: patent
severity: background
ref_id: WO2016169601A1
ref_type: patent
severity: background
ref_id: WO2016087008
ref_type: patent
severity: novelty_destroying
ref_id: WO2016086993
ref_type: patent
severity: background
ref_id: WO2016169601
ref_type: patent
severity: background
Final disposition: pending (2018-12-26)