+

WO2008064535A1 - Système et procédé de positionnement en intérieur intelligent avec force de signal reçu - Google Patents

Système et procédé de positionnement en intérieur intelligent avec force de signal reçu Download PDF

Info

Publication number
WO2008064535A1
WO2008064535A1 PCT/CN2007/000495 CN2007000495W WO2008064535A1 WO 2008064535 A1 WO2008064535 A1 WO 2008064535A1 CN 2007000495 W CN2007000495 W CN 2007000495W WO 2008064535 A1 WO2008064535 A1 WO 2008064535A1
Authority
WO
WIPO (PCT)
Prior art keywords
iato
received signal
signal strength
agent
rss
Prior art date
Application number
PCT/CN2007/000495
Other languages
English (en)
Inventor
Shu Tak Raymond Lee
Original Assignee
Shu Tak Raymond Lee
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shu Tak Raymond Lee filed Critical Shu Tak Raymond Lee
Publication of WO2008064535A1 publication Critical patent/WO2008064535A1/fr

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30Services specially adapted for particular environments, situations or purposes
    • H04W4/33Services specially adapted for particular environments, situations or purposes for indoor environments, e.g. buildings
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/50Network services
    • H04L67/52Network services specially adapted for the location of the user terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02Services making use of location information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02Services making use of location information
    • H04W4/024Guidance services
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02Services making use of location information
    • H04W4/029Location-based management or tracking services
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W64/00Locating users or terminals or network equipment for network management purposes, e.g. mobility management

Definitions

  • the present invention relates to communication system and information system, more particularly, relates to a system and method for intelligent indoor positioning with received signal strength. Background of the invention
  • GPS Global Positioning System
  • MPS Mobile Positioning System
  • WPS Wireless Positioning System
  • GPS and MPS employ trigonometrical schemes to calculate the object's position. They can provide a realizable and efficient outdoor positioning technology.
  • said GPS and MPS positioning technologies are limited, thus, conventional GPS and MPS technologies can not be applied.
  • the present invention provides a comprehensive product and service to satisfy the need of indoor positioning and guidance. Integrating of the state-of-art intelligent received signal strength technology in real-time indoor positioning and
  • Intelligent Agent Technology 5 more accurate and faster positioning and guidance are provided to users. Further, apart from guidance information, the present invention may also provide the user with restaurant, movie, and traffic information.
  • the present invention provides a system for intelligent indoor positioning with received signal strength (RSS), wherein said system comprises IATo received signal strength (RSS) retrieval agent,
  • RSS received signal strength
  • IATo RSS server IATo wireless positioning agent, IATo RSS matching agent, IATo
  • Free Walker agent IATo Partnering agents and access points for communication between said multiple agents and/or servers.
  • Said IATo RSS server stores RSS values
  • Said IATo RSS retrieval agent receive RSS values, and carries the matching results from said IATo RSS matching agent return to said IATo
  • Said IATo wireless positioning agent acquires RSS values received by
  • Said IATo RSS matching agent compares the RSS values acquired by said IATo wireless agent and RSS values in said RSS server to determine the exact address of said wireless terminal, and to return said exact address to said IATo wireless positioning agent;
  • said IATo FreeWalker receives the exact address received by said IATo wireless positioning agent.
  • said system further comprises IATo Partnering Agent for user to check the location of his/her partner(s) who carries(carry) said wireless terminal(s) by activating the matching function of said IATo wireless positioning agent.
  • said system further comprises IATo ontology-based indoor information server for storing indoor facility information, and IATo based information retrieval agent for user to retrieve information from said indoor information server.
  • said IATo RSS server comprises:
  • RSS database for storing indoor RSS information
  • Agent communication and authentication centre for controlling and managing the travelling and authentication of said IATo wireless positioning agent and said IATo matching agent.
  • said system further compsies IATo RSS training agent for training said artificial neural network with the processed RSS information in said IATo RSS information database.
  • said wireless positioning device may communicate with the nearest IATo wireless positioning agents.
  • said IATo agents are with high autonomy, may enter different devices, servers, gateways and/or platforms via Internet, said IATo agents may adapt to different network environment and different bandwidths.
  • a method for intelligent indoor positioning with received signal strength comprises:
  • Sl Said IATo RSS retrieval agent retrieves the RSS values of the current position of the wireless mobile terminal
  • Said IATo wireless positioning agent retrieves RSS values from said IATo RSS retrieval agent
  • IATo wireless positioning agent with the RSS values in said IATo RSS server, to determine the exact address of said wireless mobile terminal.
  • IATo Free Walker agent receives the address values carried by IATo wireless positioning agent.
  • the present invention further comprises a method for collecting RSS data and training said IATo RSS server, comprises:
  • Said IATo wireless positioning agent enters said IATo RSS server with RSS information, and stores said RSS information into said IATo RSS server to perform data cleaning, data normalization and data conversion.
  • Said IATo training agent trains the artificial neural network in said
  • IATo RSS server with processed RSS information.
  • said IATo wireless positioning agent of matched devices carries the address information of matched device enters the user's wireless mobile terminal, thus to display the matched user's position on the display of the user's IATo FreeWalker.
  • the present invention provides a comprehensive product and service to satisfy the need of indoor positioning and guiding. By integrating intelligent RSS technology and real-time indoor positioning, users may find shops more accurate and faster.
  • the present invention may be applied in shopping malls, exhibition centres, hospitals, casinos, airports, stadiums, government buildings and museums, etc.
  • FIG. 1 is the block diagram of the indoor positioning system, in accordance with the present invention.
  • FIG. 1 is the flow diagram of the training of the artificial neural network in the RSS server, in accordance with the present invention.
  • FIG. 3 is the flow diagram of the positioning process of the wireless mobile terminal base on the RSS, in accordance with the present invention.
  • Figure 4 is the schematic diagram of the first embodiment, in accordance with the present invention.
  • Figure 5 is the schematic diagram of the second embodiment, in accordance with the present invention.
  • FIG. 6 is the exemplary schematic diagram of the wireless terminal device, in accordance with the present invention.
  • FIG. 1 is the block diagram of the indoor positioning system, in accordance with the present invention.
  • Said system comprises wireless access point
  • wireless mobile terminal 102 comprises IATo Free Walker 103 for receiving address value returned by IATo wireless positioning agent, IATo RSS retrieval agent 104 for retrieving the
  • Said IATo RSS server 108 comprises IATo RSS database 109 for storing RSS values and artificial neural network 112 embedded into IATo RSS server; RSS matching agent 106 for comparing RSS values received by IATo wireless positioning agent and RSS values stored in RSS server to determine the exact address of wireless mobile terminal; and RSS training agent 113 for training artificial neural networks 109.
  • Said IATo ontology-based indoor facility information server comprises IATo ontology-based database 111 and information retrieval agent 107, said information retrieval agent 107 retrieves information from the indoor facility information server according to user's requirements.
  • IATo indoor Free Walker agent 103 may be any portable devices, for example, PALM, PDA, Sub-notebook computers, Pocket PC, smart phone and/or portable computer, and indoor positioning device, which may be bound to said portable device or may be separated from said portable device, for example, wireless receiver.
  • Said wireless receiver is used to receive synchronous wireless signal data for automatic user positioning. Because it is used for guiding system, therefore, spatial data must be displayed on the screen of said portable device.
  • Said system will display the indoor map, meanwhile, the user's current location will also be displayed on said indoor map.
  • said device may also display the useful information to user according to the current location in an automatic and on-spot manner, and graphical and/or video information may also be provided on the user device.
  • IATo indoor FreeWalker agent provides six core functions: 1) Route guiding function; 2) Real-time location-based interactive ontology tree-based information display function; 3) Interactive fuzzy query function; 4) Partnering function; 5) Location-based SMS function and 6) Intelligent Itinerary planning function.
  • Route guiding function helps the user to locate his/her current position and the points-of-interests (POIs) by representing a real-time graphical indicate on the indoor map, i.e. drawing a red line to show the user where he/she has passed and a orange box indicate the point of interest such as the restaurants, bookshops, cinemas and landmarks, etc.
  • POIs points-of-interests
  • the tree-based information display provides a well-organized information source for user to choose, locate and find his/her preferred facilities / merchants.
  • AI technology such as fuzzy logics is used to support intelligent searching (such as fuzzy searching based on price and distance) as an add- valued feature for user to find the preferred products / POIs / facilities.
  • IATo RSS retrieval agent 104 operates at the client side. The main function of the RSS retrieval agent 104 is to collect the RSS of the current location, for example, the overall wireless pattern of the mobile terminal at the current location. Said RSS pattern (known as "wireless FingerPrints”) is used to identifier a certain location of indoor facility.
  • IATo RSS training agent 113 is used to training the artificial neural networks 112 within the RSS server 108 for later use for indoor positioning.
  • state-of-art neural networks and training methods such as Multi-layered Feed Forward Back propagation Networks, RBF Neural Networks, ART Neural Networks, K-mean clustering, K-Nearest Neighbourhood clustering, SOM clustering, Chaotic attraction clustering techniques are adopted. (All these AI methods and models are embedded in the IATOPIA Intelligent Layer Module).
  • IATo wireless positioning Agent 105 is the core mobile wireless positioning agent operated in this intelligent indoor positioning system.
  • the main functions of this IATo Wireless Positioning Agent are two folds: 1. Communicate between the IATo RSS Server and the mobile device to transfer the location information to the IATOPIA Indoor FreeWalker Agent within the mobile device;
  • IAT Intelligent Technology
  • IATo RSS Server 108 is the core invention mentioned in this patent document.
  • the main functions of the IATOPIA FingerPrint Server provides / acts as:
  • the neural network embedded within this IATo RSS server acts as the intelligent WiFi FP (Fingerprint) knowledge training and updating centre;
  • Agent communication and registration centre to control and administrate the mobility and authentication of the IATOPIA Wireless Positioning and IATOPIA Partnering Agents.
  • IATo partnering agent 114 aims at the provision of partnering function. In other words, within a particular mobile device, the user not only can see his/her own current location within the indoor facility, she/he can also see the current location of his/her partner(s) whenever the user enables the partnering function in this system. Besides, user can also send location-based short messages (LBSMS) to these IATo FreeWalker partner(s) as well.
  • LBSMS location-based short messages
  • Step 101 divide the indoor environment into grid points, collect the
  • Step 102 said IATo RSS retrieval agent transfer RSS information to said IATo wireless positioning agent
  • Step 103 said IATo wireless positioning agent enters said IATo RSS server with RSS information, and stores said RSS information into said IATo RSS server to perform data cleaning, data normalization and data conversion.
  • Step 104 said IATo training agent trains the artificial neural network in said IATo RSS server with processed RSS information.
  • FIG. 3 is the flow diagram of the positioning process of the wireless mobile terminal base on the RSS, in accordance with the present invention. The positioning process will be described in connection with figure 1, compising the following steps:
  • Step 201 said IATo RSS retrieval agent retrieves the RSS of the current position of the wireless mobile terminal
  • Step 202 said IATo wireless positioning agent retrieves RSS values from said IATo RSS retrieval agent
  • Step 203 IATo RSS matching agent matches the RSS values retrieved by IATo wireless positioning agent with the RSS values in said IATo RSS server, to determine the exact address of said wireless mobile terminal.
  • Step 204 IATo Free Walker agent receives the address value carried by
  • Figure 4 is the schematic diagram of the first embodiment.
  • Figure 4 illustrated the plan view of a shopping mall that installed with the intelligent indoor positioning system in the present invention.
  • Three wireless access points 401, 402, and 403 are installed in the shopping mall for the communication among each of the agents of the intelligent indoor positioning system.
  • the RSS server is trained as the following steps, first, divide the indoor environment into grid points, collect the RSS information of the wireless access point corresponding to each grid points via said IATo RSS retrieval agent; second, said IATo RSS retrieval agent transfer RSS information to said IATo wireless positioning agent; then, said IATo wireless positioning agent enters said IATo RSS server with RSS information, and stores said RSS information into said IATo RSS server to perform data cleaning, data normalization and data conversion; at last, said IATo training agent trains the artificial neural networks in said IATo RSS server with processed RSS information. At this point, the RSS information of each grid point is stored into the RSS database.
  • the user's destination is shop 2, after the user enters the shopping mall with the wireless mobile terminal 404.
  • the agent communication and authorization centre in said RSS server verifies the indoor positioning agent of the wireless mobile terminal to assure the user's identification of the wireless mobile terminal, and whether if the user is authorized to use the intelligent indoor positioning system.
  • said intelligent indoor positioning system are used to locate the wireless mobile terminal 404; then, IATo RSS retrieval agent retrieves the RSS values of the wireless mobile terminal in the current location; then IATo wireless positioning agent receives RSS values from RSS retrieval agent; and then, IATo RSS matching agent compares RSS values retrieved by IATo wireless positioning agent and the RSS values stored in the IATo RSS server to obtain the exact address of said wireless mobile terminal; at last, IATo FreeWalker agent receives the address value returned by IATo wireless positioning agent.
  • FIG. 5 is the schematic diagram of the second embodiment. Parents and their children are in different location in the shopping mall, and they are not visible to each other. In this regard, parents may apply the IATo partnering function of the present invention to look for their children.
  • the IATo wireless positioning agent of the children's wireless mobile terminal enters the parents' wireless mobile terminal with the address information of the children's wireless mobile terminal, thus to display the children's position on the display of parents' IATo FreeWalker.
  • FIG. 6 is the exemplary schematic diagram of the wireless terminal device, in accordance with the present invention.
  • Figure 6 illustrated the application in PALM.
  • the interface shown in figure 6 is under full screen mode. In non-full screen mode, brief introduction of shops, discount information, advertisements, contact information etc. may be shown around the map in tree-type display pattern.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)
  • Navigation (AREA)

Abstract

L'invention concerne un système de positionnement intelligent en intérieur avec la force de signal reçu, ce système comprenant un agent d'extraction de force de signal reçu IATo (RSS), un serveur IATo RSS, un agent de positionnement sans fil IATo, un agent de mise en correspondance IATo RSS, un agent Free Walker IATo, des agents de partenariat IATo et des points d'accès permettant une communication entre ces multiples agents et/ou serveurs. Cette invention concerne un produit et un service complet qui répondent à la nécessité de positionner et de guider en intérieur. Par l'intégration de la technologie RSS intelligente, de la technologie mobile, de la technologie d'agents intelligents (IAT) et du positionnement en intérieur en temps réel, des utilisateurs peuvent trouver n'importe quels service, informations et installations à base de localisation en temps réel, de manière plus exacte et plus efficace. Cette invention peut être appliquée dans des centres commerciaux, des centres d'exposition, des hôpitaux, des hôtels, des casinos, des stades, des aéroports, des bâtiments gouvernementaux et des musées, etc.
PCT/CN2007/000495 2006-11-28 2007-02-13 Système et procédé de positionnement en intérieur intelligent avec force de signal reçu WO2008064535A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2006101571373A CN101191835B (zh) 2006-11-28 2006-11-28 一种使用相关信号强度智能定位的系统和方法
CN200610157137.3 2006-11-28

Publications (1)

Publication Number Publication Date
WO2008064535A1 true WO2008064535A1 (fr) 2008-06-05

Family

ID=38282863

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2007/000495 WO2008064535A1 (fr) 2006-11-28 2007-02-13 Système et procédé de positionnement en intérieur intelligent avec force de signal reçu

Country Status (3)

Country Link
CN (1) CN101191835B (fr)
HK (1) HK1098299A2 (fr)
WO (1) WO2008064535A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012015897A1 (fr) * 2010-07-30 2012-02-02 Qualcomm Incorporated Procédés et appareils utilisables pour déterminer qu'un poste mobile se trouve dans une ou plusieurs régions intérieures particulières
WO2012015906A1 (fr) * 2010-07-30 2012-02-02 Qualcomm Incorporated Procédés et appareils de détermination centrée sur les postes mobiles de données d'aide au positionnement
EP2518680A1 (fr) * 2011-04-28 2012-10-31 RapidBlue Solutions Oy Profilage de consommateur basé sur la localisation
CN103245343A (zh) * 2012-02-07 2013-08-14 联想(北京)有限公司 一种相对定位方法及装置
US8892118B2 (en) 2010-07-23 2014-11-18 Qualcomm Incorporated Methods and apparatuses for use in providing position assistance data to mobile stations
US10849205B2 (en) 2015-10-14 2020-11-24 Current Lighting Solutions, Llc Luminaire having a beacon and a directional antenna

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102088478A (zh) * 2010-12-02 2011-06-08 深圳市同洲电子股份有限公司 一种数字电视终端的定位方法及系统
CN103888900A (zh) * 2014-02-21 2014-06-25 毛蔚青 基于移动终端位置所属建筑物或地理区域的自动识别方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001028272A1 (fr) * 1999-10-13 2001-04-19 Koninklijke Kpn N.V. Procede et systeme de reperage de terminaux mobiles
EP1355505A1 (fr) * 2002-04-11 2003-10-22 Accenture Global Services GmbH Localisation d'un emetteur-recepteur à frequences radio
US20040203904A1 (en) * 2002-12-27 2004-10-14 Docomo Communications Laboratories Usa, Inc. Selective fusion location estimation (SELFLOC) for wireless access technologies
CN1717592A (zh) * 2002-11-27 2006-01-04 皇家飞利浦电子股份有限公司 测距和定位方法与设备
CN1722897A (zh) * 2004-07-13 2006-01-18 中兴通讯股份有限公司 一种移动通讯中移动终端的定位方法
EP1689126A1 (fr) * 2005-02-08 2006-08-09 Alcatel Service de localisation dans un réseau local sans fil

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001028272A1 (fr) * 1999-10-13 2001-04-19 Koninklijke Kpn N.V. Procede et systeme de reperage de terminaux mobiles
EP1355505A1 (fr) * 2002-04-11 2003-10-22 Accenture Global Services GmbH Localisation d'un emetteur-recepteur à frequences radio
CN1717592A (zh) * 2002-11-27 2006-01-04 皇家飞利浦电子股份有限公司 测距和定位方法与设备
US20040203904A1 (en) * 2002-12-27 2004-10-14 Docomo Communications Laboratories Usa, Inc. Selective fusion location estimation (SELFLOC) for wireless access technologies
CN1722897A (zh) * 2004-07-13 2006-01-18 中兴通讯股份有限公司 一种移动通讯中移动终端的定位方法
EP1689126A1 (fr) * 2005-02-08 2006-08-09 Alcatel Service de localisation dans un réseau local sans fil

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8892118B2 (en) 2010-07-23 2014-11-18 Qualcomm Incorporated Methods and apparatuses for use in providing position assistance data to mobile stations
US9473900B2 (en) 2010-07-23 2016-10-18 Qualcomm Incorporated Methods and apparatuses for use in providing navigation assistance data to mobile stations
US9137639B2 (en) 2010-07-23 2015-09-15 Qualcomm Incorporated Methods and apparatuses for use in providing navigation assistance data to mobile stations
US9148763B2 (en) 2010-07-30 2015-09-29 Qualcomm Incorporated Methods and apparatuses for mobile station centric determination of positioning assistance data
US8818401B2 (en) 2010-07-30 2014-08-26 Qualcomm Incorporated Methods and apparatuses for use in determining that a mobile station is at one or more particular indoor regions
US9125021B2 (en) 2010-07-30 2015-09-01 Qualcomm Incorporated Methods and apparatuses for use in determining that a mobile station is at one or more particular indoor regions
WO2012015897A1 (fr) * 2010-07-30 2012-02-02 Qualcomm Incorporated Procédés et appareils utilisables pour déterminer qu'un poste mobile se trouve dans une ou plusieurs régions intérieures particulières
US9451411B2 (en) 2010-07-30 2016-09-20 Qualcomm Incorporated Methods and apparatuses for use in determining that a mobile station is at one or more particular indoor regions
WO2012015906A1 (fr) * 2010-07-30 2012-02-02 Qualcomm Incorporated Procédés et appareils de détermination centrée sur les postes mobiles de données d'aide au positionnement
US9622042B2 (en) 2010-07-30 2017-04-11 Qualcomm Incorporated Methods and apparatuses for mobile station centric determination of positioning assistance data
US20120278132A1 (en) * 2011-04-28 2012-11-01 Rapidblue Solutions Oy Location based consumer profiling
EP2518680A1 (fr) * 2011-04-28 2012-10-31 RapidBlue Solutions Oy Profilage de consommateur basé sur la localisation
CN103245343A (zh) * 2012-02-07 2013-08-14 联想(北京)有限公司 一种相对定位方法及装置
US10849205B2 (en) 2015-10-14 2020-11-24 Current Lighting Solutions, Llc Luminaire having a beacon and a directional antenna

Also Published As

Publication number Publication date
CN101191835A (zh) 2008-06-04
HK1098299A2 (en) 2007-07-13
CN101191835B (zh) 2011-07-06

Similar Documents

Publication Publication Date Title
US9961507B1 (en) Beacon deployment enabling location based services (LBS) in an urban or city environment
Steiniger et al. Foundations of location based services
US9602193B1 (en) Transportation support network utilized fixed and/or dynamically deployed wireless transceivers
JP5746378B2 (ja) 移動体ロケーション判定のための方法及び装置
US8866673B2 (en) System and method for providing indoor navigation and special local base service application for malls stores shopping centers and buildings utilize RF beacons
US20090291672A1 (en) System And Method For Providing Personalized Automated And Autonomously Initiated Information Delivery And Chaperone Service
WO2008064535A1 (fr) Système et procédé de positionnement en intérieur intelligent avec force de signal reçu
US7529617B2 (en) Area information provision system and method
Ding et al. The research on blind navigation system based on RFID
CN105761175A (zh) 旅游路线订制方法和服务器
CN104952007A (zh) 一种导游终端系统和导游方法
JP2011508993A (ja) Wlan位置検出及び場所に基づくサービス提供の方法
JP2003523565A (ja) クライアントの旅行者を地理的に関連するデータに接続するインターネットシステム
JP2004289828A (ja) 情報の送信制御方法、およびコンピュータ読み取り可能記憶媒体
EP1194739B1 (fr) Système de navigation mobile
CN106713380A (zh) 一种基于位置感知的信息共享、推送与交换系统
CN105931124A (zh) 一种室内社交网络服务系统
JP2011060059A (ja) 滞留時間を考慮した行動計画情報提供方法
Korbel et al. Mobile applications aiding the visually impaired in travelling with public transport
US20090187337A1 (en) System and method for navigation of a building, campus or retail structure with a mobile device
Greßmann et al. Towards ubiquitous indoor location based services and indoor navigation
Bessho et al. A space-identifying ubiquitous infrastructure and its application for tour-guiding service
WO2007134508A1 (fr) Système de guide touristique à base d'agent d'ontologie intelligent
JP2002359877A (ja) 位置関連情報提供システム、情報提供用サーバ、通信装置及び情報発信媒体
Steiniger et al. Foundations of LBS

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07710921

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 07710921

Country of ref document: EP

Kind code of ref document: A1

点击 这是indexloc提供的php浏览器服务,不要输入任何密码和下载