Pub Date : 2019-11-01DOI: 10.1109/LATINCOM48065.2019.8937912
R. Pereira, D. Lieira, Marco A. C. da Silva, Adinovam H. M. Pimenta, Joahannes Costa, D. Rosário, R. Meneguette
Vehicular networks has unique characteristics compared to other wireless networks, such as, highly dynamic topology, short transmission time, among others. These characteristics becomes a challenge for management and allocation of vehicle cloud resources. In this paper, we propose a allocatioN and mANgement resourCe policY for vehicular cloud, called of NANCY. For this, we formulate the problem of allocation of resources through the mathematical method Multiple Attribute Decision, which will decide whether NANCY will allocate the resources available to attend or not the service requested by the vehicle. Simulation results showed that NANCY provides a larger amount of service to be provided, providing a reduction in the number of service locks due to its accuracy, as well as a reduction in the amount of services discarded due to its load balancing in resource allocation.
{"title":"A novel fog-based resource allocation policy for vehicular clouds in the highway environment","authors":"R. Pereira, D. Lieira, Marco A. C. da Silva, Adinovam H. M. Pimenta, Joahannes Costa, D. Rosário, R. Meneguette","doi":"10.1109/LATINCOM48065.2019.8937912","DOIUrl":"https://doi.org/10.1109/LATINCOM48065.2019.8937912","url":null,"abstract":"Vehicular networks has unique characteristics compared to other wireless networks, such as, highly dynamic topology, short transmission time, among others. These characteristics becomes a challenge for management and allocation of vehicle cloud resources. In this paper, we propose a allocatioN and mANgement resourCe policY for vehicular cloud, called of NANCY. For this, we formulate the problem of allocation of resources through the mathematical method Multiple Attribute Decision, which will decide whether NANCY will allocate the resources available to attend or not the service requested by the vehicle. Simulation results showed that NANCY provides a larger amount of service to be provided, providing a reduction in the number of service locks due to its accuracy, as well as a reduction in the amount of services discarded due to its load balancing in resource allocation.","PeriodicalId":120312,"journal":{"name":"2019 IEEE Latin-American Conference on Communications (LATINCOM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129241956","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 : 2019-11-01DOI: 10.1109/LATINCOM48065.2019.8937966
J. M. L. Filho, C. Melo
Image and Video Super-Resolution problems become relevant in applied Deep learning due to recent results on using Convolutional Neural Networks and Adversarial Training method to solve such problems. This body of work has focused on conceiving or improving super-resolution methods, and validating them. Little attention has been devoted to their application. Video streaming has the highest popularity among Internet users being responsible for the most significant portion of today's Internet traffic. In this paper, a single image super-resolution model is applied to conceive a video super-resolution model. The designed model was tested against a video base made up of 220 clips, and each clip was encoded in four resolutions. The numerical results showed that the conceived model output is virtually indistinguishable from its ground truth and its use in the context of video distribution decrease by almost 84.5% the related traffic.
{"title":"A GAN to Fight Video-related Traffic Flooding: Super-resolution","authors":"J. M. L. Filho, C. Melo","doi":"10.1109/LATINCOM48065.2019.8937966","DOIUrl":"https://doi.org/10.1109/LATINCOM48065.2019.8937966","url":null,"abstract":"Image and Video Super-Resolution problems become relevant in applied Deep learning due to recent results on using Convolutional Neural Networks and Adversarial Training method to solve such problems. This body of work has focused on conceiving or improving super-resolution methods, and validating them. Little attention has been devoted to their application. Video streaming has the highest popularity among Internet users being responsible for the most significant portion of today's Internet traffic. In this paper, a single image super-resolution model is applied to conceive a video super-resolution model. The designed model was tested against a video base made up of 220 clips, and each clip was encoded in four resolutions. The numerical results showed that the conceived model output is virtually indistinguishable from its ground truth and its use in the context of video distribution decrease by almost 84.5% the related traffic.","PeriodicalId":120312,"journal":{"name":"2019 IEEE Latin-American Conference on Communications (LATINCOM)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125912470","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 : 2019-11-01DOI: 10.1109/LATINCOM48065.2019.8937930
R. Togneri, Glauber Camponogara, J. Soininen, C. Kamienski
Most current scientific and industrial efforts in IoT are geared towards building integrated platforms to finally realize its potential in commercial scale applications. The IoT and Big Data contemporary context brings a number of challenges, such as providing quality assurance (defined by availability and veracity) for sensor data. Traditional signal processing approaches are no longer sufficient, requiring combined approaches in both architectural and analytical layers. This paper proposes a discussion on the adequate foundations of a new general approach aimed at increasing robustness and antifragility of IoT-based smart applications. In addition, it shows results of preliminary experiments with real data in the context of precision irrigation using multivariate methods to identify relevant situations, such as sensor failures and the mismatch of contextual sensor information due to different spatial granularities capture. Our results provide initial indications of the adequacy of the proposed framework.
{"title":"Foundations of Data Quality Assurance for IoT-based Smart Applications","authors":"R. Togneri, Glauber Camponogara, J. Soininen, C. Kamienski","doi":"10.1109/LATINCOM48065.2019.8937930","DOIUrl":"https://doi.org/10.1109/LATINCOM48065.2019.8937930","url":null,"abstract":"Most current scientific and industrial efforts in IoT are geared towards building integrated platforms to finally realize its potential in commercial scale applications. The IoT and Big Data contemporary context brings a number of challenges, such as providing quality assurance (defined by availability and veracity) for sensor data. Traditional signal processing approaches are no longer sufficient, requiring combined approaches in both architectural and analytical layers. This paper proposes a discussion on the adequate foundations of a new general approach aimed at increasing robustness and antifragility of IoT-based smart applications. In addition, it shows results of preliminary experiments with real data in the context of precision irrigation using multivariate methods to identify relevant situations, such as sensor failures and the mismatch of contextual sensor information due to different spatial granularities capture. Our results provide initial indications of the adequacy of the proposed framework.","PeriodicalId":120312,"journal":{"name":"2019 IEEE Latin-American Conference on Communications (LATINCOM)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126618387","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 : 2019-11-01DOI: 10.1109/LATINCOM48065.2019.8937937
H. Waldman, R. C. Almeida, R. C. Bortoletto
The paper addresses the problem of minimizing total slot idle time in assigning spectrum to an incremental 2-class traffic. Deadlock avoidance is first shown to be possible in many instances from knowledge of the connection sizes, thus keeping total idleness finite. Then, minimization of the finite residual idleness is shown to be possible with appropriate traffic-aware assignment policies.
{"title":"Spectral Idleness Minimization in the Elastic Single Link under Incremental Traffic","authors":"H. Waldman, R. C. Almeida, R. C. Bortoletto","doi":"10.1109/LATINCOM48065.2019.8937937","DOIUrl":"https://doi.org/10.1109/LATINCOM48065.2019.8937937","url":null,"abstract":"The paper addresses the problem of minimizing total slot idle time in assigning spectrum to an incremental 2-class traffic. Deadlock avoidance is first shown to be possible in many instances from knowledge of the connection sizes, thus keeping total idleness finite. Then, minimization of the finite residual idleness is shown to be possible with appropriate traffic-aware assignment policies.","PeriodicalId":120312,"journal":{"name":"2019 IEEE Latin-American Conference on Communications (LATINCOM)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127567881","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 : 2019-11-01DOI: 10.1109/LATINCOM48065.2019.8937880
L. Vangelista, Alessandro Cattapan
In this paper we propose an improvement of the LoRa modulation called “Dual Orthogonal LoRa Modulation” which increases the link level bit rate of about 70%-80% at the expense of a 3dB penalty SNR. The Dual Orthogonal LoRa Modulation is introduced in a cross-layer design framework: this paper shows that - despite the penalty of 3dB in SNR - the overall performance of the LoRaWAN network are greatly improved in some real-life scenarios, taking into account the problems most highlighted for LoRaWAN networks i.e., the congestion and the scalability of LoRaWAN. The improvements at the network level are achieved thanks to the characteristics of the Dual Orthogonal LoRa Modulation which provide additional levels of freedom to the Spreading Factors assignment
{"title":"A new LoRa-compatible modulation improving the LoRaWAN network level performance","authors":"L. Vangelista, Alessandro Cattapan","doi":"10.1109/LATINCOM48065.2019.8937880","DOIUrl":"https://doi.org/10.1109/LATINCOM48065.2019.8937880","url":null,"abstract":"In this paper we propose an improvement of the LoRa modulation called “Dual Orthogonal LoRa Modulation” which increases the link level bit rate of about 70%-80% at the expense of a 3dB penalty SNR. The Dual Orthogonal LoRa Modulation is introduced in a cross-layer design framework: this paper shows that - despite the penalty of 3dB in SNR - the overall performance of the LoRaWAN network are greatly improved in some real-life scenarios, taking into account the problems most highlighted for LoRaWAN networks i.e., the congestion and the scalability of LoRaWAN. The improvements at the network level are achieved thanks to the characteristics of the Dual Orthogonal LoRa Modulation which provide additional levels of freedom to the Spreading Factors assignment","PeriodicalId":120312,"journal":{"name":"2019 IEEE Latin-American Conference on Communications (LATINCOM)","volume":"8 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134584887","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 : 2019-11-01DOI: 10.1109/LATINCOM48065.2019.8937958
Willian Santos, Wesley S. Costa, Menno J. Faber, Jair A. L. Silva, H. Rocha, M. Segatto
As the number of devices in IoT networks grows, the requirements for communication reliability increases. To ensure this reliability, in this work a hybrid network topology for IoT sensors is proposed, using mesh and star topologies. This hybrid network aims to ensure greater network coverage for sensor allocation. For the network planning, a fusion of the Genetic Algorithm and K-Medoids Algorithm was proposed. An experiment was performed with LoRa where the acquired data were used to test the developed algorithm. In addition the hardware for the proposed Cluster Head of the mesh network was developed.
{"title":"Sensor Allocation in a Hybrid Star-Mesh IoT Network using Genetic Algorithm and K-Medoids","authors":"Willian Santos, Wesley S. Costa, Menno J. Faber, Jair A. L. Silva, H. Rocha, M. Segatto","doi":"10.1109/LATINCOM48065.2019.8937958","DOIUrl":"https://doi.org/10.1109/LATINCOM48065.2019.8937958","url":null,"abstract":"As the number of devices in IoT networks grows, the requirements for communication reliability increases. To ensure this reliability, in this work a hybrid network topology for IoT sensors is proposed, using mesh and star topologies. This hybrid network aims to ensure greater network coverage for sensor allocation. For the network planning, a fusion of the Genetic Algorithm and K-Medoids Algorithm was proposed. An experiment was performed with LoRa where the acquired data were used to test the developed algorithm. In addition the hardware for the proposed Cluster Head of the mesh network was developed.","PeriodicalId":120312,"journal":{"name":"2019 IEEE Latin-American Conference on Communications (LATINCOM)","volume":"1950 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129222557","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 : 2019-11-01DOI: 10.1109/LATINCOM48065.2019.8938026
R. Duarte, M. Alencar, W. Lopes, F. Carvalho, Danilo B. T. Almeida
The need to increase and to uniformize transmission rates for all users of multi-user communications revived the interest in configurations in which base station antennas are distributed in space. In particular, cell-free system, where space is not divided into limited regions, and all access points serve all users, have received special attention. Although its weak channel hardening, this systems have shown to be advantageous in several ways. In this work, we obtained an analytical expression for the signal-to-interference-plus-noise-ratio in systems cell-free affected by an effect called radio frequency mismatch. The effectiveness of this expression was evaluated based on the analysis of achievable rates under various conditions. Since there was a displacement between the Cumulative Distribution Function curves obtained with the analytical expression and the channel realizations, the rates remained in the same order of magnitude, indicating that it can be used to predict system performance with some precision.
{"title":"Cell-Free System's Performance under RF Mismatch","authors":"R. Duarte, M. Alencar, W. Lopes, F. Carvalho, Danilo B. T. Almeida","doi":"10.1109/LATINCOM48065.2019.8938026","DOIUrl":"https://doi.org/10.1109/LATINCOM48065.2019.8938026","url":null,"abstract":"The need to increase and to uniformize transmission rates for all users of multi-user communications revived the interest in configurations in which base station antennas are distributed in space. In particular, cell-free system, where space is not divided into limited regions, and all access points serve all users, have received special attention. Although its weak channel hardening, this systems have shown to be advantageous in several ways. In this work, we obtained an analytical expression for the signal-to-interference-plus-noise-ratio in systems cell-free affected by an effect called radio frequency mismatch. The effectiveness of this expression was evaluated based on the analysis of achievable rates under various conditions. Since there was a displacement between the Cumulative Distribution Function curves obtained with the analytical expression and the channel realizations, the rates remained in the same order of magnitude, indicating that it can be used to predict system performance with some precision.","PeriodicalId":120312,"journal":{"name":"2019 IEEE Latin-American Conference on Communications (LATINCOM)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121262826","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 : 2019-11-01DOI: 10.1109/LATINCOM48065.2019.8938005
Rodrigo Muñoz Lara, Sandra Céspedes Umaña, A. Hafid
The Low Power Wide Area (LPWA) networks are expected to enable the massive connectivity of small and constrained devices to the Internet of Things. Due to the restricted nature of both end devices and network links, LPWA technologies employ network stacks that often do not define an interoperable network layer; instead, application data is usually placed directly into technology-specific layer-two frames. Besides not being able to run standard IP-based protocols at the end device, the lack of an IP layer also causes LPWA segments to operate in an isolated manner requiring middle boxes to interface non-IP LPWA technologies with the IP world. IETF is working to standardize a compression scheme, called Static Context Header Compression (SCHC), which will allow compressing the headers of IPv6 and UDP for LPWA networks, in a way that the end device is enabled with IP-based communications. In this paper, we focus on the LoRa/LoRaWAN technology and describe the way in which the selection of the compression rules in SCHC will translate into specific transmission delays. We conduct a study of the expected transmission times, namely the Time on Air (ToA), and propose two additional metrics to understand and characterize the impact of compression over the resultant delay of IP-based communications over LoRaWAN. Our work concludes that there is a non-linear relationship between Time on Air and the percentage of compression of each rule.
{"title":"Understanding and Characterizing Transmission Times for Compressed IP packets over LoRaWAN","authors":"Rodrigo Muñoz Lara, Sandra Céspedes Umaña, A. Hafid","doi":"10.1109/LATINCOM48065.2019.8938005","DOIUrl":"https://doi.org/10.1109/LATINCOM48065.2019.8938005","url":null,"abstract":"The Low Power Wide Area (LPWA) networks are expected to enable the massive connectivity of small and constrained devices to the Internet of Things. Due to the restricted nature of both end devices and network links, LPWA technologies employ network stacks that often do not define an interoperable network layer; instead, application data is usually placed directly into technology-specific layer-two frames. Besides not being able to run standard IP-based protocols at the end device, the lack of an IP layer also causes LPWA segments to operate in an isolated manner requiring middle boxes to interface non-IP LPWA technologies with the IP world. IETF is working to standardize a compression scheme, called Static Context Header Compression (SCHC), which will allow compressing the headers of IPv6 and UDP for LPWA networks, in a way that the end device is enabled with IP-based communications. In this paper, we focus on the LoRa/LoRaWAN technology and describe the way in which the selection of the compression rules in SCHC will translate into specific transmission delays. We conduct a study of the expected transmission times, namely the Time on Air (ToA), and propose two additional metrics to understand and characterize the impact of compression over the resultant delay of IP-based communications over LoRaWAN. Our work concludes that there is a non-linear relationship between Time on Air and the percentage of compression of each rule.","PeriodicalId":120312,"journal":{"name":"2019 IEEE Latin-American Conference on Communications (LATINCOM)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126850953","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 : 2019-11-01DOI: 10.1109/LATINCOM48065.2019.8937926
R. I. Acosta-Quiñonez, R. Rodriguez-Avila
Tensor decomposition has gained special attention in modern implementations for wide range of digital signal processing (DSP) areas. This decomposition has a transcendental role because most of DSP systems have a better representation when using models indexed with more than two indexes. The main drawback is that Tensor decomposition is a computationally-demanding algorithm and ad-hoc designs and implementations are costly and require long design periods. This paper presents the prototyping of Tensor decomposition as a proof-of-concept (PoC) over a high-performance CPU-GPU Heterogeneous Computing Platform (HCP)-based DSP blocks exposing variable levels of parallelism, throughput, resource utilization and with a modular approach that eliminates the overhead of designing ad-hoc architectures. Benefits of using the modular approach of this prototyping platform for implementing the Tensor decomposition is clear as the design time reduces and a clear idea of particular requirements for a final implementation is obtained from early stages of the PoC development.
{"title":"Tensor decomposition over a Fast-Prototyping HCP composed by CPU-GPU","authors":"R. I. Acosta-Quiñonez, R. Rodriguez-Avila","doi":"10.1109/LATINCOM48065.2019.8937926","DOIUrl":"https://doi.org/10.1109/LATINCOM48065.2019.8937926","url":null,"abstract":"Tensor decomposition has gained special attention in modern implementations for wide range of digital signal processing (DSP) areas. This decomposition has a transcendental role because most of DSP systems have a better representation when using models indexed with more than two indexes. The main drawback is that Tensor decomposition is a computationally-demanding algorithm and ad-hoc designs and implementations are costly and require long design periods. This paper presents the prototyping of Tensor decomposition as a proof-of-concept (PoC) over a high-performance CPU-GPU Heterogeneous Computing Platform (HCP)-based DSP blocks exposing variable levels of parallelism, throughput, resource utilization and with a modular approach that eliminates the overhead of designing ad-hoc architectures. Benefits of using the modular approach of this prototyping platform for implementing the Tensor decomposition is clear as the design time reduces and a clear idea of particular requirements for a final implementation is obtained from early stages of the PoC development.","PeriodicalId":120312,"journal":{"name":"2019 IEEE Latin-American Conference on Communications (LATINCOM)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121327547","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 : 2019-11-01DOI: 10.1109/LATINCOM48065.2019.8937884
Rone Ilídio da Silva, C. M. Silva, Sergio de Oliveira, J. Nogueira
In this work, we address data gathering in Wireless Sensors Networks. Wireless sensor networks are composed of small and autonomous sensor devices. Typical applications include monitoring and recording physical conditions of the environment. Sensors count on limited processing power, small storage space, radio for short range communications, and limited battery. One major issue in wireless sensor networks is data gathering. Data gathering based on static sinks incur in premature energy exhaustion in nodes near the sink. By using mobile collectors, wireless sensors networks can save energy since the data routes tend to be smaller. In this article, we propose three data gathering algorithms. We analyze different strategies to either avoid packet collisions and to retransmit lost packets. The results indicate that packet collisions may substantially affect the network performance in wireless sensor networks data gathering.
{"title":"Using Aerial Unmanned Vehicles for Data Gathering in Wireless Sensor Networks","authors":"Rone Ilídio da Silva, C. M. Silva, Sergio de Oliveira, J. Nogueira","doi":"10.1109/LATINCOM48065.2019.8937884","DOIUrl":"https://doi.org/10.1109/LATINCOM48065.2019.8937884","url":null,"abstract":"In this work, we address data gathering in Wireless Sensors Networks. Wireless sensor networks are composed of small and autonomous sensor devices. Typical applications include monitoring and recording physical conditions of the environment. Sensors count on limited processing power, small storage space, radio for short range communications, and limited battery. One major issue in wireless sensor networks is data gathering. Data gathering based on static sinks incur in premature energy exhaustion in nodes near the sink. By using mobile collectors, wireless sensors networks can save energy since the data routes tend to be smaller. In this article, we propose three data gathering algorithms. We analyze different strategies to either avoid packet collisions and to retransmit lost packets. The results indicate that packet collisions may substantially affect the network performance in wireless sensor networks data gathering.","PeriodicalId":120312,"journal":{"name":"2019 IEEE Latin-American Conference on Communications (LATINCOM)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127057650","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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