Fábio Canelo, Bruno M. C. Silva, J. Rodrigues, Zuqing Zhu
{"title":"Performance evaluation of an enhanced cryptography solution for m-Health applications in cooperative environments","authors":"Fábio Canelo, Bruno M. C. Silva, J. Rodrigues, Zuqing Zhu","doi":"10.1109/GLOCOM.2013.6831320","DOIUrl":"https://doi.org/10.1109/GLOCOM.2013.6831320","url":null,"abstract":"Mobile health (m-Health) applications delivers healthcare services through mobile applications regardless of time and place. An m-Health application makes use of wireless communications to sustain its health services and often providing a patient-doctor interaction. Therefore, m-Health applications present several challenging issues and constraints, such as, mobile devices battery and storage capacity, broadcast constraints, interferences, disconnections, noises, limited bandwidths, network delays, and of most importance, privacy and confidentiality concerns. This paper proposes a novel and enhanced cryptography solution in a cooperative environment considering a novel and early-proposed cooperation strategy for m-Health Applications. This proposal aims to face the challenges related to privacy and security issues of all forwarded and retrieved data concerning user sensitive information. Furthermore, it presents a performance evaluation of this proposal considering a comparison with an earlier proposed encryption strategy for the same cooperative environment.","PeriodicalId":233798,"journal":{"name":"2013 IEEE Global Communications Conference (GLOBECOM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128512721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Diibuted componentwise EM algorithm or mixture models in sensor networks","authors":"Jia Yu, Pei-Jung Chung","doi":"10.1109/GLOCOM.2013.6831601","DOIUrl":"https://doi.org/10.1109/GLOCOM.2013.6831601","url":null,"abstract":"This work considers mixture model estimation in sensor networks in a distributed manner. In the statistical literature, the maximum likelihood (ML) estimate of mixture distributions can be computed via a straightforward application of the expectation and maximization (EM) algorithm. In sensor networks without centralized processing units, data are collected and processed locally. Modifications of standard EM-type algorithms are necessary to accommodate the characteristics of sensor networks. Existing works on the distributed EM algorithm focus mainly on estimation performance and implementation aspects. Here, we address the convergence issue by proposing a distributed EM-like algorithm that updates mixture parameters sequentially. Simulation results show that the proposed approach leads to significant gain in convergence speed and considerable saving in computational time.","PeriodicalId":233798,"journal":{"name":"2013 IEEE Global Communications Conference (GLOBECOM)","volume":"142 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128732921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Smart hybrid power system for base transceiver stations with real-time energy management","authors":"P. Diamantoulakis, A. Ghassemi, G. Karagiannidis","doi":"10.1109/GLOCOM.2013.6831494","DOIUrl":"https://doi.org/10.1109/GLOCOM.2013.6831494","url":null,"abstract":"Reducing the power consumption of base transceiver stations (BTSs) in mobile communications networks is typically achieved through energy saving techniques, where they can also be combined with local power generators to create a hybrid power system (HPS). Such a system has reduced power consumption and operational cost, without taking the advantage of real-time energy management. In this paper, we introduce the smart HPS that can facilitate energy consumption scheduling (ECS) via an intelligent connection to the power grid. In doing so, we first develop sensor control and communication systems with an embedded smart ECS unit for the HPS. Then, we propose a real-time energy management algorithm to reduce the operational cost of BTS, according to real-time pricing and estimating demand and supply. The numerical results presented show a significant reduction in the BTS operational costs. We also develop a techno-economic and sizing analysis to describe the total cost of the smart HPS taking the real-time energy pricing into account. Since the lifetime of the operating system can be quite long, our results show that there is possibility to make a profit.","PeriodicalId":233798,"journal":{"name":"2013 IEEE Global Communications Conference (GLOBECOM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129642495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Content-based sensor search for the Web of Things","authors":"C. Truong, K. Römer","doi":"10.1109/GLOCOM.2013.6831475","DOIUrl":"https://doi.org/10.1109/GLOCOM.2013.6831475","url":null,"abstract":"In the emerging Web of Things (WoT), the real-time state of real-world objects is published by Internet-connected sensors using Web technologies. A key service in the WoT will be a search engine that allows searching for real-world objects with a certain state. We propose content-based sensor search, where given a search query that is composed of a range of sensor values, sensors that have been reading values in that range at the time of the query are found. In this paper, we present an approach based on fuzzy sets to realize scalable content-based sensor search in the WoT. Using sensor data sets obtained from real deployments, we find that our approach results in a low communication overhead. To demonstrate the practical feasibility of our approach, we implemented a prototypical search engine that enables the user to search for sensors that are available on the Web.","PeriodicalId":233798,"journal":{"name":"2013 IEEE Global Communications Conference (GLOBECOM)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126845965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xiao-yan Zhu, Haotian Chi, Ben Niu, Weidong Zhang, Zan Li, Hui Li
{"title":"MobiCache: When k-anonymity meets cache","authors":"Xiao-yan Zhu, Haotian Chi, Ben Niu, Weidong Zhang, Zan Li, Hui Li","doi":"10.1109/GLOCOM.2013.6831174","DOIUrl":"https://doi.org/10.1109/GLOCOM.2013.6831174","url":null,"abstract":"Location-Based Services (LBSs) are becoming increasingly popular in our daily life. In some scenarios, multiple users may seek data of same interest from a LBS server simultaneously or one by one, and they may need to provide their exact locations to the un-trusted LBS server in order to enjoy such a location-based service. Unfortunately, this will breach users' location privacy and security. To address this problem, we propose a novel collaborative system, MobiCache, which combines k-anonymity with caching together to protect user's location privacy while improving the cache hit ratio. Different from the traditional k-anonymity, our Dummy Selection Algorithm (DSA) chooses dummy locations which have not been queried before to increase the cache hit ratio. We also propose an enhanced-DSA to further improve the user's privacy as well as the cache hit ratio by assigning dummy locations which can make more contributions to cache hit ratio. Evaluation results show that the proposed DSA can increase the cache hit ratio and the enhanced-DSA can further improve the cache hit ratio as well as the user's privacy.","PeriodicalId":233798,"journal":{"name":"2013 IEEE Global Communications Conference (GLOBECOM)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126907018","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Maximizing number of satisfiable routing requests in static ad hoc networks","authors":"Zane Sumpter, Lucas Burson, Bin Tang, Xiao Chen","doi":"10.1109/GLOCOM.2013.6831041","DOIUrl":"https://doi.org/10.1109/GLOCOM.2013.6831041","url":null,"abstract":"We study an energy-efficient routing problem in static ad hoc networks. The problem, referred to as maxR, is to maximize the number of routing requests that can be satisfied in the network, under the constraint that each node has finite battery power. The online version of the problem, where the sequence of messages that has to be routed over the network is not known ahead of time, has been studied extensively. In this paper, we study the offline version of the problem where the sequence of requests is pre-known. As far as we know, the offline maxR problem, its hardness and approximability have not been well studied. We show that after appropriate transformation, offline maxR is equivalent to the well-known maximum disjoint path problem, which is NP-hard. We propose a greedy algorithm called GDP that has a constant approximation ratio to the optimal algorithm. GDP can be used as a benchmark to evaluate the performance of online algorithms as it is known that the best offline algorithm performs better than any online algorithm. We then put forward a new online algorithm called MECBE to solve the online maxR problem. Simulation results show that GDP outperforms MECBE, which outperforms the state-of-the-art online algorithm OML, in terms of the number of satisfiable requests, the average energy consumption per request, and the number of energy-depleted nodes.","PeriodicalId":233798,"journal":{"name":"2013 IEEE Global Communications Conference (GLOBECOM)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123863804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Optimizing user association and frequency reuse for heterogeneous network under stochastic model","authors":"Yicheng Lin, Wei Yu","doi":"10.1109/GLOCOM.2013.6831376","DOIUrl":"https://doi.org/10.1109/GLOCOM.2013.6831376","url":null,"abstract":"This paper considers the joint optimization of frequency reuse and base-station (BS) bias for user association in downlink heterogeneous networks for load balancing and intercell interference management. To make the analysis tractable, we assume that BSs are randomly deployed as point processes in multiple tiers, where BSs in each tier have different transmission powers and spatial densities. A utility maximization framework is formulated based on the user coverage rate, which is a function of the different BS biases for user association and different frequency reuse factors across BS tiers. Compared to previous works where the bias levels are heuristically determined and full reuse is adopted, we quantitatively compute the optimal user association bias and obtain the closed-form solution of the optimal frequency reuse. Interestingly, we find that the optimal bias and the optimal reuse factor of each BS tier have an inversely proportional relationship. Further, we also propose an iterative method for optimizing these two factors. In contrast to system-level optimization solutions based on specific channel realization and network topology, our approach is off-line and is useful for deriving deployment insights. Numerical results show that optimizing user association and frequency reuse for multi-tier heterogeneous networks can effectively improve cell-edge user rate performance and utility.","PeriodicalId":233798,"journal":{"name":"2013 IEEE Global Communications Conference (GLOBECOM)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123881149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A flow aggregation method for the scalable and efficient quality of service support in Next Generation Networks","authors":"Mustafa Sanli, E. G. Schmidt, Hasan Cengiz Güran","doi":"10.1109/GLOCOM.2013.6831408","DOIUrl":"https://doi.org/10.1109/GLOCOM.2013.6831408","url":null,"abstract":"The services in the Next Generation Network (NGN) will be created on demand by the customers and will require end-to-end Quality of Service (QoS) for each flow. A very significant component for the end-to-end QoS support in the Internet is the packet schedulers in the routers. The complexity of the packet scheduling algorithms increases with the number of flows. As a solution, flow aggregation decreases the number of flows processed by the scheduler. The previous work in the literature proves that if the flow aggregator is fair, the end-to-end delay bounds of the aggregated flows are preserved and suggests limiting the service rate for the aggregate flow to achieve fairness in the expense of a lower utilization of the network resources. In this paper, we present a new method for flow aggregation, which relaxes this limit on the aggregate service rate, to increase the link utilization. We analytically show that our aggregation method is fair. Consequently, the end-to-end delay bounds in the network are preserved. In addition, we provide simulation results to demonstrate the decreased average delay of the aggregated flow.","PeriodicalId":233798,"journal":{"name":"2013 IEEE Global Communications Conference (GLOBECOM)","volume":"25 35","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120899709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"On the capacity analysis of HetNets with range expansion and eICIC","authors":"Arvind Merwaday, S. Mukherjee, Ismail Güvenç","doi":"10.1109/GLOCOM.2013.6831742","DOIUrl":"https://doi.org/10.1109/GLOCOM.2013.6831742","url":null,"abstract":"Poisson Point Process (PPP) models provide important insights for the analysis of heterogeneous networks (HetNets). Recently, several theoretical results which investigate the outage and the capacity of HetNets have been developed based on PPPs. The goal of the present paper is to provide exact analytical expressions for the capacity of range expanded and interference coordinated HetNets, and validate these theoretical analysis through well-documented computer simulations. Both analytical and simulated capacity results are obtained for various range expansion and interference coordination scenarios, and are shown to have good agreement.","PeriodicalId":233798,"journal":{"name":"2013 IEEE Global Communications Conference (GLOBECOM)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120954850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"PESC: A parallel system for clustering ECG streams based on MapReduce","authors":"L. Yang, Jin Zhang, Qian Zhang","doi":"10.1109/GLOCOM.2013.6831467","DOIUrl":"https://doi.org/10.1109/GLOCOM.2013.6831467","url":null,"abstract":"Nowadays, cardiovascular disease (CVD) has become a disease of the majority. As an important instrument for diagnosing CVD, electrocardiography (ECG) is used to extract useful information about the functioning status of the heart. In the domain of ECG analysis, cluster analysis is a commonly applied approach to gain an overview of the data, detect outliers or pre-process before further analysis. In recent years, to provide better medical care for CVD patients, the cardiac telehealth system has been widely used. However, the extremely large volume and high update rate of data in the telehealth system has made cluster analysis challenging work. In this paper, we design and implement a novel parallel system for clustering massive ECG stream data based on the MapReduce framework. In our approach, a global optimum of clustering is achieved by merging and splitting clusters dynamically. Meanwhile, a good performance is gained by distributing computation over multiple computing nodes. According to the evaluation, our system not only provides good clustering results but also has an excellent performance on multiple computing nodes.","PeriodicalId":233798,"journal":{"name":"2013 IEEE Global Communications Conference (GLOBECOM)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121205648","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}