{"title":"Adaptive power saving algorithm for 802.11 mobile access points","authors":"W.-H. Jung, S. Rhee","doi":"10.1109/ICUFN.2017.7993907","DOIUrl":"https://doi.org/10.1109/ICUFN.2017.7993907","url":null,"abstract":"IEEE 802.11 standard defines PSM(Power Saving Mode) such that stations can save their energy by entering sleep states if there is no data to send or receive. On the other hand, the PSM is not defined for AP(Access Point)s as they are assumed to run on fixed power sources not on batteries. Recently, however, the widespread use of Wi-Fi tethering and wireless LAN mesh networks requires battery-powered MAP(Mobile Access Point)s. In this paper, we develop an adaptive method which enables the MAPs to entering sleep states such that delays or losses experienced by stations are minimized. Our algorithm dynamicallly adjusts the sleep durations according to the traffic pattern of uploading and downloading data. Using simulations, we show that our algorithm considerably reduces the energy consumption of MAPs while the delay experienced by stations are minimized.","PeriodicalId":284480,"journal":{"name":"2017 Ninth International Conference on Ubiquitous and Future Networks (ICUFN)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133953372","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":"Tire location registration algorithm using inter frame spacing pattern in TPMS","authors":"C. Bae, Sol Lim, Seung Gi Kim, Daejin Kim","doi":"10.1109/ICUFN.2017.7993898","DOIUrl":"https://doi.org/10.1109/ICUFN.2017.7993898","url":null,"abstract":"Recently, vehicle safety has become very important in the automobile industry. TPMS(tire pressure monitoring system) is also one of the vehicle safety systems. Recent studies of TPMS are proceeding in the fields of low power operation, battery-less system, and tire location registration. In this paper, we analyze the conventional tire location registration algorithms in which the simplex communication is used. And we propose a new algorithm that uses Inter Frame Spacing Pattern to identify the location of each tire. By implementing TPMS with proposed tire location registration algorithm, we confirmed that all sensors are registered normally within about 3 minutes.","PeriodicalId":284480,"journal":{"name":"2017 Ninth International Conference on Ubiquitous and Future Networks (ICUFN)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131178746","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}
Behnam Ojaghi Kahjogh, I. Demirkol, D. Careglio, J. Domingo-Pascual
{"title":"The impact of critical node elimination on the latency of wireless sensor networks","authors":"Behnam Ojaghi Kahjogh, I. Demirkol, D. Careglio, J. Domingo-Pascual","doi":"10.1109/ICUFN.2017.7993771","DOIUrl":"https://doi.org/10.1109/ICUFN.2017.7993771","url":null,"abstract":"Wireless Sensor Networks (WSNs) have ample applications in a wide range of domains such as health care monitoring, environmental, critical infrastructure, and military applications. These extensive usages of WSNs make them an attractive target for all adversary attacks and natural risks. Although there exist solutions against these threatening attacks, they are not sufficient especially when confronting with extreme environments such as landslides and earthquakes. Detection of sensor nodes that have a major impact on network performance would be of high priority, especially where the speed of data transmission is important. In this paper, we deal with this problem and focus on the identification of those nodes (referred as critical nodes) that, once eliminated or incapacitated, have the most impact on the overall latency of the network. In this context, we propose a novel Mixed Integer Programming (MIP) framework to quantify this impact and explore the parameter space through numerical evaluations of the MIP model. According to our results, critical node elimination attacks can increase the network latency significantly.","PeriodicalId":284480,"journal":{"name":"2017 Ninth International Conference on Ubiquitous and Future Networks (ICUFN)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115737709","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}
Sujin Kim, Soyi Kim, Seungyeob Chae, Sangjin Cho, Eulhyeon Go, M. Rim
{"title":"Relay location considering in-band emission for OFDMA-based D2D overlay systems","authors":"Sujin Kim, Soyi Kim, Seungyeob Chae, Sangjin Cho, Eulhyeon Go, M. Rim","doi":"10.1109/ICUFN.2017.7993841","DOIUrl":"https://doi.org/10.1109/ICUFN.2017.7993841","url":null,"abstract":"In device-to-device (D2D) communication systems, orthogonal frequency division multiple access (OFDMA) is widely used to secure the communication coverage and maintain the similarity with cellular systems. In order to avoid severe interference between cellular and D2D systems, one can use overlay schemes, where D2D devices use dedicated sub-channels of uplink OFDMA resources. However, sub-channels in OFDMA systems are not completely orthogonal and there is still some interference between sub-channels due to in-band emission. There are many advantages of D2D communications and the advantages can be enjoyed even for not-very-close devices by using D2D relays. In this paper, we discuss the optimal relay location taking care of in-band emission for OFDMA-based D2D overlay systems.","PeriodicalId":284480,"journal":{"name":"2017 Ninth International Conference on Ubiquitous and Future Networks (ICUFN)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114322545","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":"Improved throughput for wireless backhaul networks configured in a linear array of wireless relays","authors":"Ju-wook Jang, B. Shin","doi":"10.1109/ICUFN.2017.7993916","DOIUrl":"https://doi.org/10.1109/ICUFN.2017.7993916","url":null,"abstract":"The biggest obstacle to achieving high throughput for wireless backhaul networks is co-channel interference. We devise a new transmission scheme that overcomes this and achieves high throughput. Our scheme coordinates the transmission of downstream packets and upstream packets to employ network coding (NC). It allows every second relay transmit for enhanced throughput and overcomes the resulting co-channel interference through successive interference cancellation (SIC). Simulation results show our scheme excels the state-of-the-art by as much as 124.9% in terms of throughput and 33% in terms of exchange latency.","PeriodicalId":284480,"journal":{"name":"2017 Ninth International Conference on Ubiquitous and Future Networks (ICUFN)","volume":"362 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125068668","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 cache-node selection mechanism for data replication and service composition within cloud-based systems","authors":"I. A. Ridhawi, Y. Ridhawi","doi":"10.1109/ICUFN.2017.7993886","DOIUrl":"https://doi.org/10.1109/ICUFN.2017.7993886","url":null,"abstract":"Data replication services provide clients with faster application access time. Since cloud applications generate tremendous amounts of stored information, data distribution is a must. Such distribution requires data to be replicated on third-party cloud storage sites for faster access. Current replica services exhibit an increase in data acquisition by clients and thus requires a partial file caching strategy. This paper proposes a mechanism for selecting mobile nodes to partially cache highly requested files. The proposed scheme relies on candidate mobile cache nodes that can efficiently provide file access services to other nearby nodes. The candidate cache nodes are chosen according to their devices' hardware and software resources, flow time, residual power, mobility characteristics and transmission capabilities. Additionally, services are composed on-demand using a fuzzy-induced service-specific overlay composition technique. Simulation results demonstrate the significant gains achieved by the proposed scheme in terms of access time, enhanced service availability, overlay composition delay reduction and high file hit ratios.","PeriodicalId":284480,"journal":{"name":"2017 Ninth International Conference on Ubiquitous and Future Networks (ICUFN)","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128362442","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":"Passive extended double-sided two-way ranging algorithm for UWB positioning","authors":"Kristóf Attila Horváth, G. Ill, Á. Milánkovich","doi":"10.1109/ICUFN.2017.7993831","DOIUrl":"https://doi.org/10.1109/ICUFN.2017.7993831","url":null,"abstract":"Wireless sensor networks gain ground rapidly due to their potentially low cost. These networks, including variants with UWB (ultra-wideband) physical layer, can be utilized extremely well for positioning because of the technological capabilities. However, the accuracy of localization based on the measurement of time depends on the usage of timestamps provided by certain elements of the network. This article proposes a method to use time of arrival (ToA) also known as time of flight (ToF) measurements in an UWB technology-based passive asynchronous localization strategy (which provides low-power and quick positioning) in combination with extended two-way ranging to improve accuracy named by the authors as PE-ranging. The proposed method makes the positioning system more resistant to clock drift, while requires fewer messages due to the passive nature of the solution. First, the traditional variants of two-way ranging (TWR) are introduced, contributing the foundation of the proposed strategy, then the so-called PE-ranging is explained, which is a localization strategy based on indirect distance-measurement.","PeriodicalId":284480,"journal":{"name":"2017 Ninth International Conference on Ubiquitous and Future Networks (ICUFN)","volume":"116 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128649897","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":"Implementation of OpenAirInterface control software for 4G network","authors":"S. Koh, Sungwon Lee","doi":"10.1109/ICUFN.2017.7993891","DOIUrl":"https://doi.org/10.1109/ICUFN.2017.7993891","url":null,"abstract":"Due to the development of mobile communication, user demand and traffic increased, and various services were produced. With existing 3G networks, it was hard to demand these services and users' demand. Therefore, the 4G network has been developed. As evolving into 4G networks, much experimental and development software have been created. OAI is a hardware and software platform for 4G networks that can be used for various experiments and developments. In this paper, we have implemented a system to solve the inefficiencies in the configuration of 4G networks created by combining SDN technology and OAI. This makes it possible to set up and monitor eNodeBs and UEs. This paper consists of two parts. The system structure part deals with the structure of the implemented system. The next section deals with the actual operation of the implemented system and how it is configured and monitored.","PeriodicalId":284480,"journal":{"name":"2017 Ninth International Conference on Ubiquitous and Future Networks (ICUFN)","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128886422","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":"Locap: Privacy-preserving location proximity protocol","authors":"Kyung Choi, Mihui Kim","doi":"10.1109/ICUFN.2017.7993948","DOIUrl":"https://doi.org/10.1109/ICUFN.2017.7993948","url":null,"abstract":"The mobile phone has become a necessity in our life. Location based services have been able to be served in various devices such as mobile phone as well as car and deeply penetrated our life. Online social networks such as Facebook, Google, and Foursquare also incorporates various services using location information. However, these services need to be protected from exposure and misuse of location information while maintaining their usefulness and convenience. We propose a privacy-preserving location proximity protocol for location privacy based on fully homomorphic encryption without a trusted third party in a single round trip. Our proposed scheme can grasp the proximity of each other without exposing location information or distance. When one party requests the location of another party, our protocol uses homomorphic encryption to test if one party is within another's policy. Our main contribution is to provide a fully location privacy-preserving in one round trip with fixed computation time/amount without a trust third party.","PeriodicalId":284480,"journal":{"name":"2017 Ninth International Conference on Ubiquitous and Future Networks (ICUFN)","volume":"144 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131014129","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":"Combination of spatial modulation and non-orthogonal multiple access using hybrid detection scheme","authors":"Rahmat Faddli Siregar, Fahri Wisnu Murti, S. Shin","doi":"10.1109/ICUFN.2017.7993830","DOIUrl":"https://doi.org/10.1109/ICUFN.2017.7993830","url":null,"abstract":"Among the key technologies that have been developed for efficient transmission for 5G, are spatial modulation (SM) and non-orthogonal multiple access (NOMA). In SM, multiple transmission antenna is modulated as information in order to increase capacity. On the other hand, NOMA allows to share the same frequency resources at the same time. Obviously, combination of these two techniques offers a new accomplishment for wireless transmission. In this paper, we develop a new technique to combine SM and NOMA for uplink transmission. A hybrid detection scheme is introduced in order to estimate information in receiver side. In transmitter, we set maximum transmission power for near-end user (NEU) and lower transmission power for far-end user (FEU). The main idea of our proposed detection scheme is to perform maximum receive ratio combining (MRRC) to obtain antenna index and then estimate the corresponding symbol for NEU. Afterwards, we apply successive interference cancellation (SIC) to the total received signal in order to eliminate NEU's signal. Finally, maximum likelihood estimation (MLE) is applied to the remaining signal to estimate FEU's antenna index and transmitted symbol. As the result, we also present the bit error rate (BER) comparison and achievable user and system transmission bits.","PeriodicalId":284480,"journal":{"name":"2017 Ninth International Conference on Ubiquitous and Future Networks (ICUFN)","volume":"86 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127988759","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}