EAI Endorsed Trans. Mob. Commun. Appl.最新文献

{"title":"Reliability-based server selection for heterogeneous VANETs","authors":"S. Hosseininezhad, Victor C. M. Leung","doi":"10.4108/icst.trans.mca.2011.e4","DOIUrl":"https://doi.org/10.4108/icst.trans.mca.2011.e4","url":null,"abstract":"Heterogeneous wireless networks are capable of providing customers with better services while service providers can offer more applications to more customers with lower costs. To provide services, some applications rely on existing servers in the network. In a vehicular ad-hoc network (VANET) some mobile nodes may function as servers. Due to high mobility of nodes and short lifetime of links, server-to-client and server-to-server communications become challenging. In this paper we propose to enhance the performance of server selection by taking link reliability into consideration in the server selection mechanism, thereby avoiding extra client-to-server hand-offs and reducing the need of server-to-server synchronization. As a case study we focus on location management service in a heterogeneous VANET. We provide a routing algorithm for transactions between location servers and mobile nodes. We assume that location servers are vehicles equipped with at least one longrange and one short-range radio interfaces, whereas regular nodes (clients) are only equipped with a short-range radio interface. The primary goal of our design is to minimize hand-offs between location servers while limiting the delays of location updates. Taking advantage of vehicle mobility patterns, we propose a mobility-aware server selection scheme and show that it can reduce the number of hand-offs and yet avoid large delays during location updates. We present simulation results to show that proposed scheme significantly lowers the costs of signaling and rate of server hand-offs by increasing the connection lifetimes between clients and servers.","PeriodicalId":299985,"journal":{"name":"EAI Endorsed Trans. Mob. Commun. Appl.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128867236","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 decentralized scheduling algorithm for time synchronized channel hopping","authors":"Andrew Tinka, T. Watteyne, K. Pister, A. Bayen","doi":"10.4108/icst.trans.mca.2011.e5","DOIUrl":"https://doi.org/10.4108/icst.trans.mca.2011.e5","url":null,"abstract":"Time Synchronized Channel Hopping (TSCH) is an existing Medium Access Control scheme which enables robust communication through channel hopping and high data rates through synchronization. It is based on a time-slotted architecture, and its correct functioning depends on a schedule which is typically computed by a central node. This paper presents, to our knowledge, the first scheduling algorithm for TSCH networks which both is distributed and which copes with mobile nodes. Two variations on scheduling algorithms are presented. Aloha-based scheduling allocates one channel for broadcasting advertisements for new neighbors. Reservationbased scheduling augments Aloha-based scheduling with a dedicated timeslot for targeted advertisements based on gossip information. A mobile ad hoc motorized sensor network with frequent connectivity changes is studied, and the performance of the two proposed algorithms is assessed. This performance analysis uses both simulation results and the results of a field deployment of floating wireless sensors in an estuarial canal environment. Reservation-based scheduling performs significantly better than Aloha-based scheduling, suggesting that the improved network reactivity is worth the increased algorithmic complexity and resource consumption.","PeriodicalId":299985,"journal":{"name":"EAI Endorsed Trans. Mob. Commun. Appl.","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121896625","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":"Towards autonomous vehicular clouds","authors":"S. Olariu, M. Eltoweissy, M. Younis","doi":"10.4108/icst.trans.mca.2011.e2","DOIUrl":"https://doi.org/10.4108/icst.trans.mca.2011.e2","url":null,"abstract":"The dawn of the 21 century has seen a growing interest in vehicular networking and its myriad potential applications. The initial view of practitioners and researchers was that radio-equipped vehicles could keep the drivers informed about potential safety risks and increase their awareness of road conditions. The view then expanded to include access to the Internet and associated services. This position paper proposes and promotes a novel and more comprehensive vision namely, that advances in vehicular networks, embedded devices and cloud computing will enable the formation of autonomous clouds of vehicular computing, communication, sensing, power and physical resources. Hence, we coin the term, autonomous vehicular clouds (AVCs). A key feature distinguishing AVCs from conventional cloud computing is that mobile AVC resources can be pooled dynamically to serve authorized users and to enable autonomy in real-time service sharing and management on terrestrial, aerial, or aquatic pathways or theaters of operations. In addition to general-purpose AVCs, we also envision the emergence of specialized AVCs such as mobile analytics laboratories. Furthermore, we envision that the integration of AVCs with ubiquitous smart infrastructures including intelligent transportation systems, smart cities and smart electric power grids will have an enormous societal impact enabling ubiquitous utility cyber-physical services at the right place, right time and with right-sized resources.","PeriodicalId":299985,"journal":{"name":"EAI Endorsed Trans. Mob. Commun. Appl.","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126410829","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":"Analytical modeling of address allocation protocols in wireless ad hoc networks","authors":"Ahmad M. Radaideh, J. Daigle","doi":"10.4108/icst.trans.mca.2011.e3","DOIUrl":"https://doi.org/10.4108/icst.trans.mca.2011.e3","url":null,"abstract":"","PeriodicalId":299985,"journal":{"name":"EAI Endorsed Trans. Mob. Commun. Appl.","volume":"162 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133938026","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 Sensing Error Aware MAC Protocol for Cognitive Radio Networks","authors":"Donglin Hu, S. Mao","doi":"10.4108/mca.2012.07-09.e1","DOIUrl":"https://doi.org/10.4108/mca.2012.07-09.e1","url":null,"abstract":"Cognitive radios (CR) are intelligent radio devices that can sense the radio environment and adapt to changes in the radio environment. Spectrum sensing and spectrum access are the two key CR functions. In this paper, we present a spectrum sensing error aware MAC protocol for a CR network collocated with multiple primary networks. We explicitly consider both types of sensing errors in the CR MAC design, since such errors are inevitable for practical spectrum sensors and more important, such errors could have significant impact on the performance of the CR MAC protocol. Two spectrum sensing polices are presented, with which secondary users collaboratively sense the licensed channels. The sensing policies are then incorporated into p-Persistent CSMA to coordinate opportunistic spectrum access for CR network users. We present an analysis of the interference and throughput performance of the proposed CR MAC, and find the analysis highly accurate in our simulation studies. The proposed sensing error aware CR MAC protocol outperforms two existing approaches with considerable margins in our simulations, which justify the importance of considering spectrum sensing errors in CR MAC design.","PeriodicalId":299985,"journal":{"name":"EAI Endorsed Trans. Mob. Commun. Appl.","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127901127","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":"Ubi-Interact: A modular approach to connecting systems","authors":"Sandro Weber, M. Ludwig, G. Klinker","doi":"10.4108/eai.14-7-2021.170291","DOIUrl":"https://doi.org/10.4108/eai.14-7-2021.170291","url":null,"abstract":"Ubi-Interact is a framework for interactive applications combining individual systems and devices distributed over a network. Specification and implementation of such applications should be modular, extendable and reusable. Performance, re-usability of once established capabilities and easy integration of devices are main objectives. It relies on extendable common data formats. Edge computing capabilities allow to analyze and transform this data. These computing modules can also manage an arbitrary number of devices with similar capabilities interchangeably. The framework is ready to be used. Nodes for CSharp, Javascript, C++ and Java exist and features are continuously expanded. Ubi-Interact lets users build real-time systems with modular components that can separate system behaviour from base API calls, leaving the user free to explore and maintain a combination of software and hardware each running in their native environment. Received on 20 April 2021; accepted on 04 July 2021; published on 14 July 2021","PeriodicalId":299985,"journal":{"name":"EAI Endorsed Trans. Mob. Commun. Appl.","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131261939","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":"Analysis of Implementation \"Jogja Istimewa\" Based on Mobile Application Using UTAUT2 Model in Development Jogja Smart Province","authors":"Tea Qaula Ferbia, A. Santoso, S. Suyoto","doi":"10.4108/eai.29-1-2021.168508","DOIUrl":"https://doi.org/10.4108/eai.29-1-2021.168508","url":null,"abstract":"This paper explores the Jogja Istimewa Application. This application is applied due to the development of Smart Province in the Special Region of Yogyakarta, Indonesia. Provinces with a high level of mobility require the government to be able to provide services quickly, precisely, and accurately. For this reason, researchers try to dig deeper into the extent to which the application can be accepted by the local community, both for tourists and students. Using the UTAUT2 method, are 300 questionnaires were distributed in the Special Region of Yogyakarta using a non-probability sampling technique combined using the snowball sampling method. The results show that facilitating conditions and price value are the components that have the highest impact on people's intention to use the application. Whereas behavioral intention influences on behavioral use because it has an essential role in fulfilling the behavior of the community or user to reuse the mobile-based Jogja Istimewa Application.","PeriodicalId":299985,"journal":{"name":"EAI Endorsed Trans. Mob. Commun. Appl.","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127216869","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":"Cooperative Spectrum Sensing using DQN in CRN","authors":"M. Moneesh, T. Tejaswi, T. Yeshwanth, M. Harshitha, G. Chakravarthy","doi":"10.4108/eai.14-7-2021.170290","DOIUrl":"https://doi.org/10.4108/eai.14-7-2021.170290","url":null,"abstract":"Abstract —It is imperative to address the problem of spectrum under usage and inefficiency because of the increasing spectrum demand and slender spectrum resources. One of the salient functions of cognitive radio is spectrum sensing which is used to avoid the interference of the unlicensed secondary users with licensed primary users and spot the available spectrum for enhancing the spectrum usage. The frequency band that a secondary user can utilize without interfering with any licensed primary users are called spectrum holes. Cooperative sensing is a remedy to improve the sensing performance, in which secondary users (SUs) cooperate among themselves to sense the spectrum and find the spectrum holes. Here we propose a deep reinforcement learning based spectrum sensing to discover the spectrum holes. We implement a deep reinforcement learning based method called Deep Q-Network (DQN) to find the spectrum holes. The secondary users (SU) uses the DQN to find the vacant channels in the spectrum effectively. The secondary user (SU) senses the spectrum associated with a single primary user (PU). The spectrum is sensed and the spectrum holes are detected to satisfy the requirement of the secondary user (SU).It is imperative to address the problem of spectrum under usage and inefficiency because of the increasing spectrum demand and slender spectrum resources. One of the salient functions of cognitive radio is spectrum sensing which is used to avoid the interference of the unlicensed secondary users with licensed primary users and spot the available spectrum for enhancing the spectrum usage. The frequency band that a secondary user can utilize without interfering with any licensed primary users are called spectrum holes. Cooperative sensing is a remedy to improve the sensing performance, in which secondary users (SUs) cooperate among themselves to sense the spectrum and find the spectrum holes. Here we propose a deep reinforcement learning based spectrum sensing to discover the spectrum holes. We implement a deep reinforcement learning based method called Deep Q-Network (DQN) to find the spectrum holes. The secondary users (SU) uses the DQN to find the vacant channels in the spectrum effectively. The secondary user (SU) senses the spectrum associated with a single primary user (PU). The spectrum is sensed and the spectrum holes are detected to satisfy the requirement of the secondary user (SU).","PeriodicalId":299985,"journal":{"name":"EAI Endorsed Trans. Mob. Commun. Appl.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132582614","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":"DSRC Applicability in Cameroon Road Traffic: A Simulation Study","authors":"M. Zongo, J. Nlong, R. Ndoundam, A. Foerster","doi":"10.4108/eai.11-6-2021.170233","DOIUrl":"https://doi.org/10.4108/eai.11-6-2021.170233","url":null,"abstract":"The IEEE 802.11p standard has been amended in the 5.9GHz band in 2010 to provide road safety by enabling vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) communications. V2V communications evolve the exchange of Wave Short Messages (WSM) between vehicles for safety advertisement, either in one hop or multi-hop broadcasts. However, previous DSRC evaluations have shown that this protocol is highly sensitive to transmission conditions, making it difficult to predict its performance. We are interested in finding the best configuration parameters for safety messages broadcasting over DSRC in typical African urban environments. Extensive simulations through the widely used network simulator OMNeT++, Veins, and SUMO show that only a very small fraction (around 30%) of the WSM reach the neighboring vehicles on time. Furthermore, the rebroadcasting of WSM further deteriorates the performances. Thus, the protocol as it is needs to be improved for its application in our environment.","PeriodicalId":299985,"journal":{"name":"EAI Endorsed Trans. Mob. Commun. Appl.","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121221591","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":"The Review of Mobile Applications and Wireless Technologies in Sustaining K-12 Schools during COVID-19","authors":"Karuna Samuel Finch, Srikant Manas Kala, V. Sathya","doi":"10.4108/eai.29-1-2021.168509","DOIUrl":"https://doi.org/10.4108/eai.29-1-2021.168509","url":null,"abstract":"Mobile-learning (M-Learning) is no longer a futuristic concept in E-learning. The disruptions induced by the mandatory social distancing norms amidst the COVID-19 pandemic has brought it to the centre stage as it facilitates seamless delivery of education to mobile-users on the go. The ever increasing penetration of low-cost smartphones and remarkable advancement in wireless communication technologies has made M-learning ubiquitous and affordable. This paper highlights the roles that mass-adoption of mobile phone devices have played in sustaining K-12 schools. We review the impact that latest developments in communication technology and the deployment of LTE-WiFi coexistence, 5G, and Wi-Fi6 networks will have on M-learning applications. Further, we highlight the challenges that need to be addressed so that the higher penetration of mobile phones and deployment of wireless network technologies can be optimally harnessed for an improved M-learning experience.","PeriodicalId":299985,"journal":{"name":"EAI Endorsed Trans. Mob. Commun. Appl.","volume":"130 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121358670","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}