scholarly journals HCBLS: A Hierarchical Cluster-Based Location Service in Urban Environment

2015 ◽  
Vol 2015 ◽  
pp. 1-16 ◽  
Author(s):  
Raik Aissaoui ◽  
Amine Dhraief ◽  
Abdelfettah Belghith ◽  
Hamid Menouar ◽  
Hassan Mathkour ◽  
...  
Keyword(s):  
High Mobility ◽  
Hierarchical Cluster ◽  
Location Based Services ◽  
Location Information ◽  
Message Delivery ◽  
Location Update ◽  
Localization Accuracy ◽  
Location Service ◽  
The City ◽  
Entire Network

Vehicle location information is central to many location-based services and applications in VANETs. Tracking vehicles positions and maintaining an accurate up-to-date view of the entire network are not easy due to the high mobility of vehicles and consequently rapid topology changes. The design of a scalable, accurate, and efficient location service is still a very challenging issue. In this paper, we propose a lightweight hierarchical cluster-based location service in city environments (HCBLS). HCBLS integrates a logical clustering based on the city digital map and consequently does not involve extra signaling overhead. An advanced location update aggregation at different levels of the assumed hierarchy is adopted to maintain up-to-date and accurate location information. Simulation results show that HCBLS achieves much better performances than the Efficient Map-Based Location Service (EMBLS) and any regular (non-cluster-based) updating scheme. HCBLS increases the success rate by around 10%, improves the overview of the network by more than 30%, lowers the location update and query costs by more than 7 times, lowers the message delivery latency by around 3 times, and presents around 4 times better localization accuracy.

On the Use of Optimal Stopping Theory for Secret Sharing Scheme Update

2013 ◽  
pp. 276-295 ◽  
Author(s):  
Constantinos Delakouridis ◽  
Leonidas Kazatzopoulos
Keyword(s):  
Secret Sharing ◽  
Information Disclosure ◽  
Location Privacy ◽  
Location Based Services ◽  
Location Information ◽  
Cloud Infrastructure ◽  
Location Update ◽  
Location Services ◽  
Optimal Thresholds ◽  
Cryptographic Techniques

The location privacy issue has been addressed thoroughly so far. Cryptographic techniques, k-anonymity-based approaches, spatial obfuscation methods, mix-zones, pseudonyms, and dummy location signals have been proposed to enhance location privacy. In this chapter, the authors propose an approach, called STS (Share The Secret) that segments and distributes the location information to various, non-trusted, entities from where it will be reachable by authenticated location services. This secret sharing approach prevents location information disclosure even in situation where there is a direct observation of the target. The proposed approach facilitates end-users or location-based services to classify flexible privacy levels for different contexts of operation. The authors provide the optimal thresholds to alter the privacy policy levels when there is a need for relaxing or strengthening the required privacy. Additionally, they discuss the robustness of the proposed approach against various adversary models. Finally, the authors evaluate the approach in terms of computational and energy efficiency, using real mobile applications and location update scenarios over a cloud infrastructure, which is used to support storage and computational tasks.

Incremental Location Matching for Human Travel Route Anomaly Detection

2012 ◽  
pp. 153-174
Author(s):  
Wen-Chen Hu ◽  
Naima Kaabouch ◽  
Lei Chen ◽  
Ming Yang
Keyword(s):  
Mobile Phones ◽  
Daily Life ◽  
High Mobility ◽  
Location Based Services ◽  
Handheld Devices ◽  
Location Information ◽  
Short Message ◽  
School Bus ◽  
Mobile Games ◽  
The World

According to a forecast, the worldwide smartphone sales surpassed the world PC sales at the end of 2011. Smartphones are a kind of mobile handheld devices with phone capability or mobile phones with advanced features. Typical smartphone features include microbrowsers, emails, short message services, mobile games, GPS, et cetera. The feature of high mobility and small size of smartphones has created many applications that are not possible or inconvenient for PCs and servers, even notebooks. Location-based services (LBS), one of mobile applications, have attracted great attention recently. This research proposes a location-based service, which uses location information to find travel route anomalies, a common problem of daily life. For example, an alert should be generated when a school bus misses part of a route or a pupil does not arrive at school on time. Different kinds of route anomalies are discussed, and various methods for detecting the anomalies are proposed in this chapter. The major methods use a technique of incremental location search, which finds matched routes as the search route is entered location by location. An alert is generated when no matched routes exist. Preliminary experiment results show the proposed methods are effective and easy-to-use.

scholarly journals An Indoor Localization System Using Residual Learning with Channel State Information

Entropy ◽  
2021 ◽  
Vol 23 (5) ◽  
pp. 574
Author(s):  
Chendong Xu ◽  
Weigang Wang ◽  
Yunwei Zhang ◽  
Jie Qin ◽  
Shujuan Yu ◽  
...  
Keyword(s):  
Channel State Information ◽  
Indoor Environment ◽  
Indoor Localization ◽  
Location Based Services ◽  
Channel State ◽  
State Information ◽  
Localization Accuracy ◽  
Localization System ◽  
Increasing Demand ◽  
Degradation Problem

With the increasing demand of location-based services, neural network (NN)-based intelligent indoor localization has attracted great interest due to its high localization accuracy. However, deep NNs are usually affected by degradation and gradient vanishing. To fill this gap, we propose a novel indoor localization system, including denoising NN and residual network (ResNet), to predict the location of moving object by the channel state information (CSI). In the ResNet, to prevent overfitting, we replace all the residual blocks by the stochastic residual blocks. Specially, we explore the long-range stochastic shortcut connection (LRSSC) to solve the degradation problem and gradient vanishing. To obtain a large receptive field without losing information, we leverage the dilated convolution at the rear of the ResNet. Experimental results are presented to confirm that our system outperforms state-of-the-art methods in a representative indoor environment.

scholarly journals Privacy vs. Reward in Indoor Location-Based Services

2016 ◽  
Vol 2016 (4) ◽  
pp. 102-122 ◽  
Author(s):  
Kassem Fawaz ◽  
Kyu-Han Kim ◽  
Kang G. Shin
Keyword(s):  
Location Privacy ◽  
Indoor Localization ◽  
Service Providers ◽  
Location Based Services ◽  
Location Information ◽  
Privacy Concerns ◽  
Indoor Location ◽  
Location Data ◽  
Personalized Services ◽  
Privacy Risks

AbstractWith the advance of indoor localization technology, indoor location-based services (ILBS) are gaining popularity. They, however, accompany privacy concerns. ILBS providers track the users’ mobility to learn more about their behavior, and then provide them with improved and personalized services. Our survey of 200 individuals highlighted their concerns about this tracking for potential leakage of their personal/private traits, but also showed their willingness to accept reduced tracking for improved service. In this paper, we propose PR-LBS (Privacy vs. Reward for Location-Based Service), a system that addresses these seemingly conflicting requirements by balancing the users’ privacy concerns and the benefits of sharing location information in indoor location tracking environments. PR-LBS relies on a novel location-privacy criterion to quantify the privacy risks pertaining to sharing indoor location information. It also employs a repeated play model to ensure that the received service is proportionate to the privacy risk. We implement and evaluate PR-LBS extensively with various real-world user mobility traces. Results show that PR-LBS has low overhead, protects the users’ privacy, and makes a good tradeoff between the quality of service for the users and the utility of shared location data for service providers.

ILSSPP: Intelligent location sharing system with privacy preserving features for smart cities

2021 ◽  
pp. 1-12
Author(s):  
Gokay Saldamli ◽  
Richard Chow ◽  
Hongxia Jin
Keyword(s):  
Service Providers ◽  
Smart Cities ◽  
User Interaction ◽  
Privacy Preserving ◽  
Location Based Services ◽  
Third Party ◽  
Location Information ◽  
Fine Grained ◽  
Location Sharing ◽  
Social Network Structure

Social networking services are increasingly accessed through mobile devices. This trend has prompted services such as Facebook and Google+to incorporate location as a de facto feature of user interaction. At the same time, services based on location such as Foursquare and Shopkick are also growing as smartphone market penetration increases. In fact, this growth is happening despite concerns (growing at a similar pace) about security and third-party use of private location information (e.g., for advertising). Nevertheless, service providers have been unwilling to build truly private systems in which they do not have access to location information. In this paper, we describe an architecture and a trial implementation of a privacy-preserving location sharing system called ILSSPP. The system protects location information from the service provider and yet enables fine grained location-sharing. One main feature of the system is to protect an individual’s social network structure. The pattern of location sharing preferences towards contacts can reveal this structure without any knowledge of the locations themselves. ILSSPP protects locations sharing preferences through protocol unification and masking. ILSSPP has been implemented as a standalone solution, but the technology can also be integrated into location-based services to enhance privacy.

scholarly journals Trusted Base Stations-Based Privacy Preserving Technique in Location-Based Services

2015 ◽  
Vol 8 (4) ◽  
pp. 93
Author(s):  
Muhammad Aqib ◽  
Jonathan Cazalas
Keyword(s):  
Optimal Path ◽  
Specific Area ◽  
Daily Basis ◽  
Location Based Services ◽  
Base Stations ◽  
The Internet ◽  
Location Information ◽  
Google Maps ◽  
Privacy Issue ◽  
Internet Technologies

With the advent in mobile and internet technologies, there is a significant increase in the number of users using smartphones and other internet based applications. There are a large number of applications available online that use the internet and provide useful information to the users. These include ones that provide location-based services e.g. google maps etc. These applications provide many facilities to the users who want information regarding a specific area or directions using an optimal path to a destination. Due to these reasons, the number of clients using these applications is increasing on a daily basis. Although these services are very useful and are making it easy for us to get information about our surroundings, some issues are also linked with the use of these applications and their services. One of the more significant issues of using these services is privacy with respect to sending personal location information to location-based services servers. Researchers have provided many solutions to solve these issues. One of the solutions is through caching and use of k-anonymity techniques. In this paper, we have proposed a method to solve the privacy issue that uses caching data approach to reduce the number of queries sent to the location-based services server. We also discuss the use of the concept of k-anonymity when no relevant data is available in cache, and queries are sent to the server.

scholarly journals WADAH PERTUNJUKAN SENI DI BEKASI

2020 ◽  
Vol 2 (1) ◽  
pp. 461
Author(s):  
Vicosta Christy ◽  
Tatang Hendra Pangestu
Keyword(s):  
Performing Arts ◽  
Third Space ◽  
High Mobility ◽  
Capital City ◽  
Main Concept ◽  
The Third ◽  
Shared Space ◽  
Building Typology ◽  
Recreation Area ◽  
The City

Bekasi is referred to commuter city. A commuter is someone who travels to a city to work and returns to his hometown every day, usually from a place that is quite far from where he works. There is nothing interesting to invite travelers to this city. The city is home to millions of residents who mostly work in the capital city of Jakarta. The reason is because Jakarta is already overcrowded and the price of a residential unit in Jakarta has escalated. Bekasi society has high mobility. They departed from morning and returned when it was dark. The house is only used as a rest. There is no cultural trend in Bekasi as well as a shared space for residents to communicate with each other and express interest in their talents. There needs to be a forum to embrace the polarity of the city with nature to coexist in order to produce a more attractive environment and accommodate the city of Bekasi as an educational recreation area, combining the value of sociability and relaxation. The third place becomes a role that can contribute to the overall lifestyle of the community. For this reason, people need to realize that the third space is an undisputable asset. The concept of this third space is quite unique for the process of developing a place, because the third space breaks through a generation with a much better deal than the characteristics of other places. This project uses the trans programming method for the program in the project and the building typology method which will analyze several aspects of the performing arts buildings from the past to the present. The main concept of this project prioritizes the flexibility of space so that it can be used for several different activities. AbstrakKota Bekasi sering disebut dengan kota komuter. Komuter adalah seseorang yang bepergian ke suatu kota untuk bekerja dan kembali ke kota tempat tinggalnya setiap hari, biasanya dari tempat tinggal yang cukup jauh dari tempat bekerjanya. Tidak ada hal yang menarik untuk mengajak para pelancong ke kota ini. Kota ini adalah rumah bagi jutaan penduduk yang sebagian besar bekerja di ibukota Jakarta. Alasannya mudah, karena Jakarta sudah sesak dan harga satu unit tempat tinggal di Jakarta sudah meroket. Masyarakat Bekasi memiliki mobilitas yang tinggi. Mereka berangkat dari pagi dan kembali saat hari sudah gelap. Rumah hanya dijadikan untuk beristirahat saja. Tidak terdapat tren kebudayaan di Bekasi sekaligus ruang bersama untuk warga saling berkomunikasi dan menuangkan minat bakatnya. Perlu adanya sebuah wadah untuk merangkul polaritas kota dengan alam untuk hidup berdampingan supaya menghasilkan lingkungan yang lebih menarik dan mengakomodasi kota Bekasi menjadi tempat rekreasi edukatif, menggabungkan nilai sosiabilitas dan relaksasi. Ruang ketiga menjadi peran yang bisa berkontribusi dengan keseluruhan gaya hidup masyarakat. Untuk itu masyarakat perlu menyadari bahwa, ruang ketiga menjadi aset yang tidak dapat diperdebatkan. Konsep ruang ketiga ini cukup unik untuk proses perkembangan sebuah tempat, karena ruang ketiga menerobos sebuah generasi dengan kesepakatan yang jauh lebih baik daripada karakteristik tempat lain.  Proyek ini menggunakan metode trans programming untuk program di dalam proyek dan metode tipologi bangunan dimana akan menganalisa beberapa aspek pada bangunan - bangunan ruang pertunjukan dari terdahulu hingga kekinian. Konsep utama bangunan ini mengutamakan fleksibilitas ruang sehingga bisa digunakan untuk beberapa kegiatan yang berbeda.

scholarly journals Performance Evaluation of Hop-Based Range-Free Localization Methods in Wireless Sensor Networks

2011 ◽  
Vol 2011 ◽  
pp. 1-6 ◽  
Author(s):  
M. Keshtgary ◽  
M. Fasihy ◽  
Z. Ronaghi
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Wireless Sensor ◽  
Hop Count ◽  
Localization Accuracy ◽  
Energy Consuming ◽  
Network Overhead ◽  
Entire Network ◽  
Evaluation Parameters ◽  
Range Free

Knowledge of nodes' locations is an important requirement for many applications in Wireless Sensor Networks. In the hop-based range-free localization methods, anchors broadcast the localization messages including a hop count value to the entire network. Each node receives this message and calculates its own distance with anchor in hops and then approximates its own location. In this paper, we review range-free localization methods and evaluate the performance of two methods: “DV-hop” and “amorphous” by simulation. We consider some parameters like localization accuracy, energy consumption, and network overhead. Recent papers that evaluate localization methods mostly concentrated on localization accuracy. But we have considered a group of evaluation parameters, energy consuming, and network overhead in addition to the location accuracy.

scholarly journals Sistem Informasi Geografis Rumah Makan Padang Di Kota Bogor Berbasis MobileGis

INOVA-TIF ◽  
2020 ◽  
Vol 2 (1) ◽  
pp. 32
Author(s):  
Fahmi Alamsyah
Keyword(s):  
Software Design ◽  
High Mobility ◽  
Adaptive Model ◽  
Location Based Service ◽  
Model Method ◽  
Activity Phase ◽  
Design Build ◽  
West Sumatra ◽  
Requirement Specifications ◽  
The City

<pre>Padang Restaurant (RM) or Warung Padang or Padang Restaurant is a food stall / restaurant / restaurant business that sells or serves a variety of Minangkabau culinary or cuisine originating from West Sumatra. With high mobility and technological advancements in this era will encourage people to want easy things in realizing their needs, one is looking for a Padang-eating house. Therefore, this research was built to create a Mobilegis-based Padang restaurant application using the location based service method and formula haversine formula that aims to facilitate Android smartphone users in finding and choosing the nearest Padang restaurant from the user's position and according to their choice. The system design used is the adaptive model method which includes the process activity phase which consists of scope, design, build, test and check presented in separate stages such as requirement specifications, software design, implementation, testing, etc. In the application the user is facilitated with there is a route feature that will guide to the Padang restaurant that has been previously selected. Conclusion What was obtained from this study was the result of the distribution of the Padang restaurant in the city of Bogor, the results of the analysis for calculating the distance of the nearest Padang restaurant using haversine. The results of the implementation of the distribution of Padang restaurants in the city of Bogor based on mobilegis.</pre>

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