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Delay and energy consumption analysis of frame slotted ALOHA variants for massive data collection in internet-of-things scenarios
(Multidisciplinary Digital Publishing Institute, 2020-01-01)
Article
Open AccessThis paper models and evaluates three FSA-based (Frame Slotted ALOHA) MAC (Medium Access Control) protocols, namely, FSA-ACK (FSA with ACKnowledgements), FSA-FBP (FSA with FeedBack Packets) and DFSA (Dynamic FSA). The ... -
Energy sharing and trading in multi-operator heterogeneous network deployments
(Institute of Electrical and Electronics Engineers (IEEE), 2019-05-01)
Article
Open AccessWith a view to the expected increased data traffic volume and energy consumption of the fifth generation networks, the use of renewable energy (RE) sources and infrastructure sharing have been embraced as energy and ... -
Machine learning techniques applied to multiband spectrum sensing in cognitive radios
(Multidisciplinary Digital Publishing Institute (MDPI), 2019-10-30)
Article
Open AccessIn this work, three specific machine learning techniques (neural networks, expectation maximization and k-means) are applied to a multiband spectrum sensing technique for cognitive radios. All of them have been used as a ... -
Low-cost test measurement setup for real IoT BLE sensor device characterization
(2019-03-01)
Article
Open AccessThe methodology presented in this paper aims to characterize impairments shown by real devices which are usually neglected on standardized tests but that become very important in massive IoT scenarios. For instance, we ... -
Anti-collision adaptations of BLE active scanning for dense IoT tracking applications
(Institute of Electrical and Electronics Engineers (IEEE), 2018-09-15)
Article
Open AccessBluetooth low energy (BLE) is one of most promising technologies to enable the Internet-of-Things (IoT) paradigm. The BLE neighbor discovery process (NDP) based on active scanning may be the core of multiple IoT applications ... -
Performance study of uplink and downlink splitting in ultradense highly loaded networks
(2018-07-15)
Article
Open AccessThis paper provides new insights into the performance of Uplink and Downlink Splitting (UDS) in highly loaded wireless communication systems, in terms of both serving nodes and the number of users with high traffic activity. ... -
Conflict resolution in mobile networks: a self-coordination framework based on non-dominated solutions and machine learning for data analytics [Application notes]
(2018-05-01)
Article
Open AccessSelf-organizing network (SON) is a well-known term used to describe an autonomous cellular network. SON functionalities aim at improving network operational tasks through the capability to configure, optimize and heal ... -
A low-cost tracking system for running race applications based on bluetooth low energy technology
(Multidisciplinary Digital Publishing Institute (MDPI), 2018-03-20)
Article
Open AccessTiming points used in running races and other competition events are generally based on radio-frequency identification (RFID) technology. Athletes’ times are calculated via passive RFID tags and reader kits. Specifically, ... -
Connectivity analysis in clustered wireless sensor networks powered by solar energy
(Institute of Electrical and Electronics Engineers (IEEE), 2018-04)
Article
Open AccessEmerging 5G communication paradigms, such as machine-type communication, have triggered an explosion in ad-hoc applications that require connectivity among the nodes of wireless networks. Ensuring a reliable network operation ... -
Combining distributed queuing with energy harvesting to enable perpetual distributed data collection applications
(Wiley-Blackwell, 2017-05-12)
Article
Open AccessThis paper presents, models, and evaluates energy harvesting–aware distributed queuing (EH-DQ), a novel medium access control protocol that combines distributed queuing with energy harvesting (EH) to address data collection ... -
Energy and spectrum efficient user association in millimeter wave backhaul small cell networks
(2017-02)
Article
Open AccessMacrocells are expected to be densely overlaid by small cells (SCs) to meet increasing capacity demands. Due to their dense deployment, some SCs will not be connected directly to the core network, and thus, they may forward ... -
Non-saturation delay analysis of medium transparent MAC protocol for 60 GHz fiber-wireless towards 5G mmWave networks
(2017)
Article
Open AccessIn this paper, we demonstrate an analytical model for computing the end-to-end packet delay of a converged optical/wireless 60 GHz Radio-over-Fiber (RoF) network operating under the medium-transparent MAC (MT-MAC) protocol. ...
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