Pub Date : 2015-09-03DOI: 10.1109/ConTEL.2015.7231207
M. Gebhart
Unlike in conventional Wireless Communication, Contactless Communication technologies like Near Field Communication (NFC), Proximity Card systems or RFID Labels operated at 13.56 MHz are very much impacted by signal distortion caused by de-tuning of resonant loop antennas. In fact, these effects define the near-field communication channel over just a few centimeters operating distance. To ensure interoperability, modulation signal specifications at the air interface provided in base standards must be strictly maintained. Consequently, accurate measurement methods are important and it is essential for system design to meet the specifications. This paper shows a method to consider reader modulation at the air interface of the contactless coupling channel. We apply this method on two scenarios: On the Proximity Coupling Device (PCD) test environment for Card testing, and on a real reader coupled to NFC Forum Listener 1.
{"title":"Analytic-numeric considerations for contactless reader modulation","authors":"M. Gebhart","doi":"10.1109/ConTEL.2015.7231207","DOIUrl":"https://doi.org/10.1109/ConTEL.2015.7231207","url":null,"abstract":"Unlike in conventional Wireless Communication, Contactless Communication technologies like Near Field Communication (NFC), Proximity Card systems or RFID Labels operated at 13.56 MHz are very much impacted by signal distortion caused by de-tuning of resonant loop antennas. In fact, these effects define the near-field communication channel over just a few centimeters operating distance. To ensure interoperability, modulation signal specifications at the air interface provided in base standards must be strictly maintained. Consequently, accurate measurement methods are important and it is essential for system design to meet the specifications. This paper shows a method to consider reader modulation at the air interface of the contactless coupling channel. We apply this method on two scenarios: On the Proximity Coupling Device (PCD) test environment for Card testing, and on a real reader coupled to NFC Forum Listener 1.","PeriodicalId":134613,"journal":{"name":"2015 13th International Conference on Telecommunications (ConTEL)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124520579","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}
Pub Date : 2015-07-13DOI: 10.1109/ConTEL.2015.7231197
N. A. M. Nor, Elizabeth Fabiyi, M. M. Abadi, Xuan Tang, Zabih Ghassemlooy, A. Burton
The increasing demand for higher bandwidth is the motivation behind research studies in free space optical (FSO) communications. In particular, the impact of the atmospheric channel on the FSO link performance has been investigated for decades. Among known channel effects, turbulence is the one, which is thoroughly studied from theoretical and experimental point of views. However, due to limitation of laboratory equipment and channel length, only experimental works in the weak turbulence regime are reported. Therefore, in this paper a dedicated indoor controlled laboratory chamber is used to simulate the outdoor FSO communications for moderate-to-strong turbulence regimes. Instead of increasing the link distance, we generate high temperature gradients along the propagation path of 7 m by blowing cold air in a parallel direction to the laser beam. The performances of the on off keying intensity modulated FSO link is assessed by means of the Q-factor and the optical intensity distribution plots of received signals, thus giving an insight into the level of scintillation achieved in moderate to strong turbulence regimes.
{"title":"Investigation of moderate-to-strong turbulence effects on free space optics — A laboratory demonstration","authors":"N. A. M. Nor, Elizabeth Fabiyi, M. M. Abadi, Xuan Tang, Zabih Ghassemlooy, A. Burton","doi":"10.1109/ConTEL.2015.7231197","DOIUrl":"https://doi.org/10.1109/ConTEL.2015.7231197","url":null,"abstract":"The increasing demand for higher bandwidth is the motivation behind research studies in free space optical (FSO) communications. In particular, the impact of the atmospheric channel on the FSO link performance has been investigated for decades. Among known channel effects, turbulence is the one, which is thoroughly studied from theoretical and experimental point of views. However, due to limitation of laboratory equipment and channel length, only experimental works in the weak turbulence regime are reported. Therefore, in this paper a dedicated indoor controlled laboratory chamber is used to simulate the outdoor FSO communications for moderate-to-strong turbulence regimes. Instead of increasing the link distance, we generate high temperature gradients along the propagation path of 7 m by blowing cold air in a parallel direction to the laser beam. The performances of the on off keying intensity modulated FSO link is assessed by means of the Q-factor and the optical intensity distribution plots of received signals, thus giving an insight into the level of scintillation achieved in moderate to strong turbulence regimes.","PeriodicalId":134613,"journal":{"name":"2015 13th International Conference on Telecommunications (ConTEL)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117234221","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}
Pub Date : 2015-07-13DOI: 10.1109/ConTEL.2015.7231222
S. Aleksic, Vedad Mujan
The future electric power grid, i.e., the smart grid, is expected to offer numerous advantages over the current electricity grid due to an improved efficiency of electricity production, distribution, consumption as well as sophisticated grid management and integration of distributed renewable energy sources. However, in order to enable these functionalities, additional equipment has to be installed, which, on the other hand, will lead to increased electricity consumption and more e-waste. This correspondence provides insights into the sustainability of the additional information and communication technology (ICT) equipment required for the deployment of the advanced metering infrastructure (AMI), which will be the essential part of future smart grids. We present results on the cumulative exergy consumption of AMI taking into account all life cycle phases. The impact of components' lifetime and implementation options is shown.
{"title":"Life cycle based analysis of ICT equipment for advanced metering infrastructure","authors":"S. Aleksic, Vedad Mujan","doi":"10.1109/ConTEL.2015.7231222","DOIUrl":"https://doi.org/10.1109/ConTEL.2015.7231222","url":null,"abstract":"The future electric power grid, i.e., the smart grid, is expected to offer numerous advantages over the current electricity grid due to an improved efficiency of electricity production, distribution, consumption as well as sophisticated grid management and integration of distributed renewable energy sources. However, in order to enable these functionalities, additional equipment has to be installed, which, on the other hand, will lead to increased electricity consumption and more e-waste. This correspondence provides insights into the sustainability of the additional information and communication technology (ICT) equipment required for the deployment of the advanced metering infrastructure (AMI), which will be the essential part of future smart grids. We present results on the cumulative exergy consumption of AMI taking into account all life cycle phases. The impact of components' lifetime and implementation options is shown.","PeriodicalId":134613,"journal":{"name":"2015 13th International Conference on Telecommunications (ConTEL)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130668523","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}
Pub Date : 2015-07-13DOI: 10.1109/ConTEL.2015.7231229
Tapio Soikkeli, Antti Riikonen
In this paper we utilize mobile handset-based measurements to examine smartphone generated mobile network usage. The focus is on user behavior analysis and network session is defined as the measure of network usage. In particular, we utilize the richness of handset-based data to understand the offline/background actions leading to the network usage. We make a distinction between human versus machine-generated network sessions, and examine the sessions in different semantic places of users, as well as, on different battery levels of the users' devices. Machine-generated sessions show differing properties compared to human-generated sessions, and also other contextual factors affect the properties of the network sessions. The results could be applied to more generalizable network node measurements to gain a more large-scale view on mobile network usage.
{"title":"Session level network usage patterns of mobile handsets","authors":"Tapio Soikkeli, Antti Riikonen","doi":"10.1109/ConTEL.2015.7231229","DOIUrl":"https://doi.org/10.1109/ConTEL.2015.7231229","url":null,"abstract":"In this paper we utilize mobile handset-based measurements to examine smartphone generated mobile network usage. The focus is on user behavior analysis and network session is defined as the measure of network usage. In particular, we utilize the richness of handset-based data to understand the offline/background actions leading to the network usage. We make a distinction between human versus machine-generated network sessions, and examine the sessions in different semantic places of users, as well as, on different battery levels of the users' devices. Machine-generated sessions show differing properties compared to human-generated sessions, and also other contextual factors affect the properties of the network sessions. The results could be applied to more generalizable network node measurements to gain a more large-scale view on mobile network usage.","PeriodicalId":134613,"journal":{"name":"2015 13th International Conference on Telecommunications (ConTEL)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129207876","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}
Pub Date : 2015-07-13DOI: 10.1109/ConTEL.2015.7231224
Pavle Skocir, Stjepko Zrncic, Damjan Katusic, M. Kusek, G. Jezic
The paper proposes an energy consumption model for energy constrained devices in Machine-to-Machine communication system. The model specifies generic tasks that are executed on M2M devices. It was implemented on devices on Waspmote and Arduino hardware platforms. Power consumption was calculated for the states of the proposed model. The model with calculated consumption values is applicable for testing algorithms and techniques for achieving higher energy efficiency. Furthermore, the paper presents a basic operating cycle in which tasks from the specified model are executed on M2M devices and M2M gateway in an energy efficient way. Energy consumption during 24 hours by using the suggested operating cycle is compared on Arduino and Waspmote hardware platforms.
{"title":"Energy consumption model for devices in machine-to-machine system","authors":"Pavle Skocir, Stjepko Zrncic, Damjan Katusic, M. Kusek, G. Jezic","doi":"10.1109/ConTEL.2015.7231224","DOIUrl":"https://doi.org/10.1109/ConTEL.2015.7231224","url":null,"abstract":"The paper proposes an energy consumption model for energy constrained devices in Machine-to-Machine communication system. The model specifies generic tasks that are executed on M2M devices. It was implemented on devices on Waspmote and Arduino hardware platforms. Power consumption was calculated for the states of the proposed model. The model with calculated consumption values is applicable for testing algorithms and techniques for achieving higher energy efficiency. Furthermore, the paper presents a basic operating cycle in which tasks from the specified model are executed on M2M devices and M2M gateway in an energy efficient way. Energy consumption during 24 hours by using the suggested operating cycle is compared on Arduino and Waspmote hardware platforms.","PeriodicalId":134613,"journal":{"name":"2015 13th International Conference on Telecommunications (ConTEL)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116668871","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}
Pub Date : 2015-07-13DOI: 10.1109/ConTEL.2015.7231221
Benjámin Babják, P. Völgyesi, Á. Lédeczi
Single microcontroller embedded systems cannot easily satisfy the computational requirements of systems observing physical phenomena via multiple channels at high sampling rates. Flash FPGAs can provide the necessary trade-off between adaptivity and computational power, however, fewer developers are familiar with them. Thus, we propose a soft multi-core architecture in the fabric forming a loosely coupled network with a queue-based messaging framework for inter-core communication. This platform provides parallel improvements (as per Amdahl's Law) and a familiar Harvard abstraction. The nesC language was chosen for programming, as it enables modularity and assignment of independent tasks to cores. The single core development environment was augmented to help with the transition to the new architecture. A cycle accurate system simulator, called Avrora, was enhanced to fully support multi-core platforms and whole sensor networks. The architecture provides better power consumption and response time properties for time critical applications by effectively pipelining tasks.
{"title":"Hardware-software partitioning of soft multi-core cyber-physical systems","authors":"Benjámin Babják, P. Völgyesi, Á. Lédeczi","doi":"10.1109/ConTEL.2015.7231221","DOIUrl":"https://doi.org/10.1109/ConTEL.2015.7231221","url":null,"abstract":"Single microcontroller embedded systems cannot easily satisfy the computational requirements of systems observing physical phenomena via multiple channels at high sampling rates. Flash FPGAs can provide the necessary trade-off between adaptivity and computational power, however, fewer developers are familiar with them. Thus, we propose a soft multi-core architecture in the fabric forming a loosely coupled network with a queue-based messaging framework for inter-core communication. This platform provides parallel improvements (as per Amdahl's Law) and a familiar Harvard abstraction. The nesC language was chosen for programming, as it enables modularity and assignment of independent tasks to cores. The single core development environment was augmented to help with the transition to the new architecture. A cycle accurate system simulator, called Avrora, was enhanced to fully support multi-core platforms and whole sensor networks. The architecture provides better power consumption and response time properties for time critical applications by effectively pipelining tasks.","PeriodicalId":134613,"journal":{"name":"2015 13th International Conference on Telecommunications (ConTEL)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123867168","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}
Pub Date : 2015-07-13DOI: 10.1109/ConTEL.2015.7231219
Kudret Akcapinar, Ö. Gürbüz
In this paper, we analyze bidirectional communication between two multiple antenna nodes performing half-duplex and full-duplex transmissions. We compare the performance of half-duplex and full-duplex modes in terms of achievable sum rate under finite Signal to Noise Ratio (SNR), while utilizing a realistic, experimentally characterized residual self-interference (SI) model for full-duplex operation. In our comparisons, for considering different perspectives for radio resource exploitation, we evaluate the antenna conserved and RF chain conserved full-duplex implementations, while investigating the effect of the number of antennas, different SI cancellation levels and transmission power. Our results indicate that antenna conserved full-duplex is only slightly better than half-duplex transmission, even when SI is completely canceled. RF chain conserved full-duplex, on the other hand, can double the half-duplex performance when SI is perfectly canceled, and still significantly higher capacity over half-duplex is achieved by realistic SI cancellation. Specifically, the capacity gain of RF chain conserved full-duplex over half-duplex is highly dependent on the transmission power levels, but not dependent at all on the number of antennas. Lastly, it is also deduced that individual transmission power of nodes is also important in determining the sum rate, especially for full-duplex implementations with poor SI cancellation.
{"title":"Full-duplex bidirectional communication under self-interference","authors":"Kudret Akcapinar, Ö. Gürbüz","doi":"10.1109/ConTEL.2015.7231219","DOIUrl":"https://doi.org/10.1109/ConTEL.2015.7231219","url":null,"abstract":"In this paper, we analyze bidirectional communication between two multiple antenna nodes performing half-duplex and full-duplex transmissions. We compare the performance of half-duplex and full-duplex modes in terms of achievable sum rate under finite Signal to Noise Ratio (SNR), while utilizing a realistic, experimentally characterized residual self-interference (SI) model for full-duplex operation. In our comparisons, for considering different perspectives for radio resource exploitation, we evaluate the antenna conserved and RF chain conserved full-duplex implementations, while investigating the effect of the number of antennas, different SI cancellation levels and transmission power. Our results indicate that antenna conserved full-duplex is only slightly better than half-duplex transmission, even when SI is completely canceled. RF chain conserved full-duplex, on the other hand, can double the half-duplex performance when SI is perfectly canceled, and still significantly higher capacity over half-duplex is achieved by realistic SI cancellation. Specifically, the capacity gain of RF chain conserved full-duplex over half-duplex is highly dependent on the transmission power levels, but not dependent at all on the number of antennas. Lastly, it is also deduced that individual transmission power of nodes is also important in determining the sum rate, especially for full-duplex implementations with poor SI cancellation.","PeriodicalId":134613,"journal":{"name":"2015 13th International Conference on Telecommunications (ConTEL)","volume":"397 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122862645","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}
Pub Date : 2015-07-13DOI: 10.1109/ConTEL.2015.7231220
V. Mikac, Ž. Ilić, Goran Jurin, Velimir Svedek
Mitigating unwanted effects of crosstalk in highspeed communications over copper-based digital subscriber lines (DSL) is well researched area. On the other hand effects of vectored transmission in access network based on quad cables instead of twisted pair cables is poorly covered. In such an environment, crosstalk models often do not behave intuitively and the results obtained using the standard crosstalk models can give surprising results. In this paper we calculate potentially achievable data rates, in downstream direction for VDSL2 (Very-high-bit-rate DSL 2) systems, with respect to loop length and cable filling percentage, taking into account vectoring applied on quad cables. Presented results are supported by laboratory measurements of attenuation and far-end crosstalk (FEXT). Finally, results provide useful bounds for developers, xDSL providers, and relevant regulatory agencies.
{"title":"Vectored VDSL2: Theoretical possibilities on quad cables","authors":"V. Mikac, Ž. Ilić, Goran Jurin, Velimir Svedek","doi":"10.1109/ConTEL.2015.7231220","DOIUrl":"https://doi.org/10.1109/ConTEL.2015.7231220","url":null,"abstract":"Mitigating unwanted effects of crosstalk in highspeed communications over copper-based digital subscriber lines (DSL) is well researched area. On the other hand effects of vectored transmission in access network based on quad cables instead of twisted pair cables is poorly covered. In such an environment, crosstalk models often do not behave intuitively and the results obtained using the standard crosstalk models can give surprising results. In this paper we calculate potentially achievable data rates, in downstream direction for VDSL2 (Very-high-bit-rate DSL 2) systems, with respect to loop length and cable filling percentage, taking into account vectoring applied on quad cables. Presented results are supported by laboratory measurements of attenuation and far-end crosstalk (FEXT). Finally, results provide useful bounds for developers, xDSL providers, and relevant regulatory agencies.","PeriodicalId":134613,"journal":{"name":"2015 13th International Conference on Telecommunications (ConTEL)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123034675","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}
Pub Date : 2015-07-13DOI: 10.1109/ConTEL.2015.7231218
I. Moscholios, V. Vassilakis, G. Kallos, M. Logothetis
CDMA-based technologies deserve assiduous analysis and evaluation. We study the performance, at call-level, of a CDMA cell with interference cancellation capabilities, while assuming that the cell accommodates different service-classes of batched Poisson arriving calls. The partial batch blocking discipline is applied for Call Admission Control (CAC). To guarantee certain Quality of Service (QoS) for each service-class, the Bandwidth Reservation (BR) policy is incorporated in the CAC; i.e., a fraction of system resources is reserved for highspeed service-classes. We propose a new multirate loss model for the calculation of time and call congestion probabilities. The notion of local (soft) and hard blocking, users activity, interference cancellation, as well as the BR policy, are incorporated in the model. Although the steady state probabilities of the system do not have a product form solution, time and call congestion probabilities can be efficiently determined via approximate but recursive formulas. Simulation verified the high accuracy of the new formulas. We also show the consistency of the proposed model in respect of its parameters, while comparison of the proposed model with that of Poisson input shows its necessity.
基于cdma的技术值得认真分析和评估。我们研究了具有干扰消除能力的CDMA小区在呼叫级的性能，同时假设该小区可容纳不同服务等级的批处理泊松到达呼叫。在呼叫准入控制(CAC)中，采用了部分批量阻塞原则。为了保证每个业务类别都有一定的QoS (Quality of Service)，在CAC中加入了带宽预留(Bandwidth Reservation, BR)策略;也就是说，一部分系统资源是为高速服务类保留的。我们提出了一种新的计算时间和呼叫拥塞概率的多速率损失模型。模型中包含了局部(软)和硬阻塞、用户活动、干扰消除以及BR策略的概念。虽然系统的稳态概率没有乘积形式的解，但时间和呼叫拥塞概率可以通过近似但递归的公式有效地确定。仿真结果验证了新公式的准确性。我们还证明了所提出的模型在其参数方面的一致性，而所提出的模型与泊松输入的模型的比较表明了其必要性。
{"title":"Performance analysis of CDMA-based networks with interference cancellation, for batched Poisson traffic under the bandwidth reservation policy","authors":"I. Moscholios, V. Vassilakis, G. Kallos, M. Logothetis","doi":"10.1109/ConTEL.2015.7231218","DOIUrl":"https://doi.org/10.1109/ConTEL.2015.7231218","url":null,"abstract":"CDMA-based technologies deserve assiduous analysis and evaluation. We study the performance, at call-level, of a CDMA cell with interference cancellation capabilities, while assuming that the cell accommodates different service-classes of batched Poisson arriving calls. The partial batch blocking discipline is applied for Call Admission Control (CAC). To guarantee certain Quality of Service (QoS) for each service-class, the Bandwidth Reservation (BR) policy is incorporated in the CAC; i.e., a fraction of system resources is reserved for highspeed service-classes. We propose a new multirate loss model for the calculation of time and call congestion probabilities. The notion of local (soft) and hard blocking, users activity, interference cancellation, as well as the BR policy, are incorporated in the model. Although the steady state probabilities of the system do not have a product form solution, time and call congestion probabilities can be efficiently determined via approximate but recursive formulas. Simulation verified the high accuracy of the new formulas. We also show the consistency of the proposed model in respect of its parameters, while comparison of the proposed model with that of Poisson input shows its necessity.","PeriodicalId":134613,"journal":{"name":"2015 13th International Conference on Telecommunications (ConTEL)","volume":"241 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115658637","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}
Pub Date : 2015-07-13DOI: 10.1109/ConTEL.2015.7231189
Kerlla S. Luz, P. Solís, Mylène C. Q. Farias, H. D. Garcia
This paper presents the experimental results in a proposal that aims to develop an adaptive mechanism of management and control frame traffic under a infrastructured network in the IEEE 802.11 standard to any of its versions. The mechanism is based on Signal-to-Noise Ratio (SNR) values to measure users mobility and allow the station to decide the mechanism activation or deactivation. Preliminary results were obtained from two propositions: a) indoor measurements of a WLAN 802.11g placed inside the Computer Science Center (CIC) at the University of Braslia (UNB) which covered the area of the computer labs. b) a previous simulation of the adaptive algorithm in MATLAB with nodes operating within the proposed mobility characteristics as a case study in order to test auto-activation or auto-deactivation of the mechanism by the station.
{"title":"Experimental results for a proposal of adaptative mechanism based on SNRs variation in infrastructured wireless networks","authors":"Kerlla S. Luz, P. Solís, Mylène C. Q. Farias, H. D. Garcia","doi":"10.1109/ConTEL.2015.7231189","DOIUrl":"https://doi.org/10.1109/ConTEL.2015.7231189","url":null,"abstract":"This paper presents the experimental results in a proposal that aims to develop an adaptive mechanism of management and control frame traffic under a infrastructured network in the IEEE 802.11 standard to any of its versions. The mechanism is based on Signal-to-Noise Ratio (SNR) values to measure users mobility and allow the station to decide the mechanism activation or deactivation. Preliminary results were obtained from two propositions: a) indoor measurements of a WLAN 802.11g placed inside the Computer Science Center (CIC) at the University of Braslia (UNB) which covered the area of the computer labs. b) a previous simulation of the adaptive algorithm in MATLAB with nodes operating within the proposed mobility characteristics as a case study in order to test auto-activation or auto-deactivation of the mechanism by the station.","PeriodicalId":134613,"journal":{"name":"2015 13th International Conference on Telecommunications (ConTEL)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117140570","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}
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