2018 IEEE 10th Latin-American Conference on Communications (LATINCOM)最新文献

{"title":"Combining Metrics for Route Selection in SDWSN: Static and Dynamic Approaches Evaluation","authors":"Doriedson A. G. Oliveira, C. Margi","doi":"10.1109/LATINCOM.2018.8613249","DOIUrl":"https://doi.org/10.1109/LATINCOM.2018.8613249","url":null,"abstract":"The Software Defined Networking paradigm has been applied to Wireless Sensor Networks (WSN) aiming to provide flexibility, enable resource sharing and reuse, and improve management. Routing protocol plays an important role in energy consumption given that the radio is the most power hungry component. Previous works show that using link quality as a metric usually decreases latency while using energy might balance the network energy consumption, thus increasing the network lifetime. We here apply and evaluate energy-aware route selection to Software Defined WSNs through dynamic and static combination of link quality and energy metrics. Dynamic combination is achieved using Fuzzy logic methods. Simulation results show that using energy as a metric achieves the best network lifetime and good energy consumption. Route selection using dynamic combination at CENTROID SCENARIO as a metric shows the best results for packet delivery rate, end-to-end delay and distribution of the nodes energy consumption among the network, where neighbors within the same hop count from the sink or controller have uniform energy consumption, besides a good network lifetime.","PeriodicalId":332646,"journal":{"name":"2018 IEEE 10th Latin-American Conference on Communications (LATINCOM)","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115793128","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":"CPW-OFDM(Cyclic Postfix Windowing OFDM) for the B5G (Beyond 5th Generation) Waveform","authors":"Changyoung An, H. Ryu","doi":"10.1109/LATINCOM.2018.8613242","DOIUrl":"https://doi.org/10.1109/LATINCOM.2018.8613242","url":null,"abstract":"For the new radio waveform of the beyond 5G mobile system, the spectrum efficiency is the most important factor. Especially, OOB (out-of-band) power spectrum must be reduced to increase the spectrum efficiency and to save the frequency resources. Filtering is the one way to get the sharp OOB spectrum. So, f-OFDM (filtered orthogonal frequency division multiplexing), UFMC (universal filtered multicarrier) and FBMC (filter bank multicarrier) belong to the filtering method and were suggested as 5G new radio waveform. However, there are still some problems such as the very complicated process and some difficulty to the realization. The other approach is the windowing method. WOLA-OFDM (weighted overlap and add - orthogonal frequency division multiplexing) system is the most representative windowing method. However, the WOLA-OFDM system has inherently some serious problem. Due to the overlap process of the copied and added extensions, the left extension part will invade into the right part of the previous OFDM symbol because left extension and right extension of two consecutive OFDM symbols must be overlapped in order not to sacrifice the time resource. This is very serious data collision in the transmitter even before the transmission. So, in order to improve the WOLA-OFDM system and to solve this data collision problem of WOLA-OFDM between the consecutive OFDM symbols, we like to propose a CPW-OFDM (cyclic postfix windowing - orthogonal frequency division multiplexing). In this proposed CPW-OFDM system, the first part of the OFDM symbol is copied and added on the right-end of the OFDM, which is the cyclic postfix. Then, windowing is made on this cyclic postfix and already existing cyclic postfix. WOLA-OFDM has right and left extensions and windowing is performed on these 2 extensions, but the proposed CPW-OFDM has only one extension on the right side and windowing is perform and on this right extension and left part of CP(cyclic prefix). Therefore, there is no data collision in the proposed CPW-OFDM. CPW-OFDM system is an improved and simplified version of the WOLA-OFDM system. Simulations results show that the proposed CPW-OFDM system has comparable OOB spectrum reduction characteristics and can be designed by simple some modification from the conventional OFDM system.","PeriodicalId":332646,"journal":{"name":"2018 IEEE 10th Latin-American Conference on Communications (LATINCOM)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124011140","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 Normal Probability Model for Estimating Maximum Throughput of a Transport Link Based on Experimental 4G Base Station Data Analysis","authors":"Ramon Cerna, Manuel Garcia, J. Patino","doi":"10.1109/LATINCOM.2018.8613208","DOIUrl":"https://doi.org/10.1109/LATINCOM.2018.8613208","url":null,"abstract":"With the arrival of radio access technologies, which provide greater data transmission rates for mobile users, the capability of transmission links has also experienced significative growth. This in turn triggers the need to estimate links utilization in order to do proper mobile-operator network planning. This study lays out a mathematical formula, based on the characterization of a 4G base station in a normal distribution, to calculate the maximum throughput of one transmission link which, as we will see, depends on the number of elements and average and peak throughput of the system. Finally, the results of the comparison between the proposed formula and experimental throughput have a mean absolute percent error of 11 % to 4% depending on the number of nodes.","PeriodicalId":332646,"journal":{"name":"2018 IEEE 10th Latin-American Conference on Communications (LATINCOM)","volume":"15 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126779002","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":"QoS Proposal for IEC 61850 Traffic Under an SDN Environment","authors":"Alexander Leal, J. F. Botero, E. Jacob","doi":"10.1109/LATINCOM.2018.8613240","DOIUrl":"https://doi.org/10.1109/LATINCOM.2018.8613240","url":null,"abstract":"Even though the Quality of Service (QoS) concept is widely known, in most cases the network traffic continues being treated in a classic way, with the Best Effort paradigm. One reason for this point is that QoS implementation is a complex task. However, critical infrastructure networks such as power substation communication networks, require a careful management of the traffic due to their reliability requirements. In this context, Software Defined Networking (SDN) can provide capabilities to guarantee QoS thanks to its ability for programming the network, making easier the QoS deployment. This paper presents an architecture to implement QoS inside a Substation Automation System, governed by the IEC 61850 standard, using SDN. Our testbed integrates an Opendaylight controller, which uses OVSDB and Open Flow southbound protocols to manage OpenvSwitches inside a Mininet framework. Experimental validation shows that our proposal contributes to guarantee demanding requirements of GOOSE traffic in this type of networks.","PeriodicalId":332646,"journal":{"name":"2018 IEEE 10th Latin-American Conference on Communications (LATINCOM)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128588591","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}