Mohammad Reza Ghavidel Aghdam, Bahram Rahmani, R. Abdolee
{"title":"Traffic-Based Adjustable Discontinuous Reception Mechanism with Bounded Delay","authors":"Mohammad Reza Ghavidel Aghdam, Bahram Rahmani, R. Abdolee","doi":"10.23919/WONS51326.2021.9415597","DOIUrl":"https://doi.org/10.23919/WONS51326.2021.9415597","url":null,"abstract":"Long-Term Evolution (LTE) standard has been introduced to support high speed and reliable communication in mobile devices and wireless data terminals. High data rates are the main cause of the quick battery discharge in User Equipment (UE)s in 4G/LTE and beyond. To save the UEs battery power, LTE networks utilize the Discontinuous Reception (DRX) mechanism to enhance the energy efficiency of UEs. In the DRX mechanism, there is a tradeoff between the communication delay and power consumption of the device where DRX energy efficiency improves at the expense of higher latency and vice versa. This paper proposes a novel DRX technique for 4G and beyond, in which DRX long and short sleep cycles are adjusted adaptively based on the traffic condition and a threshold delay. Numerical analysis and system simulations show that this scheme is able to increase energy efficiency at UEs and maintains the wake-up delay around a threshold delay.","PeriodicalId":103530,"journal":{"name":"2021 16th Annual Conference on Wireless On-demand Network Systems and Services Conference (WONS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128961763","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":"Non Intrusive Wi-Pi CSI Obfuscation Against Active Localization Attacks","authors":"Marco Cominelli, F. Gringoli, R. Cigno","doi":"10.23919/WONS51326.2021.9415586","DOIUrl":"https://doi.org/10.23919/WONS51326.2021.9415586","url":null,"abstract":"Channel State Information (CSI) based localization with 802.11 has been proven feasible in multiple scenarios and is becoming a serious threat to people privacy in work spaces, at home, and maybe even outdoors, even if outdoors experiments proving the feasibility are still not available. Countering unauthorized localization without hampering communications is a nontrivial task, although some very recent works suggest that it is feasible with marginal modification of the 802.11 transmission chain, but this requires modifying 802.11 devices. Furthermore, if the attacker controls two devices and not only a receiver, transmission side signal manipulation cannot help. This work explores the possibility of countering CSI based localization with an active device that, instead of jamming signals to avoid that a malicious receiver exploits CSI information to locate a person, superimpose on frames a copy of the same frame signal whose goal is not destroying reception as in jamming, but only obfuscate the location relevant information carried by the CSI. A prototype implementation and early results looks promising; they show feasibility of location obfuscation with high efficiency and excellent preservation of communication performance, paving the road for further research and improved users privacy.","PeriodicalId":103530,"journal":{"name":"2021 16th Annual Conference on Wireless On-demand Network Systems and Services Conference (WONS)","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123966844","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}
Claudia Parera, A. Redondi, M. Cesana, Qi Liao, Ilaria Malanchini
{"title":"Anticipating Mobile Radio Networks Key Performance Indicators with Transfer Learning","authors":"Claudia Parera, A. Redondi, M. Cesana, Qi Liao, Ilaria Malanchini","doi":"10.23919/WONS51326.2021.9415543","DOIUrl":"https://doi.org/10.23919/WONS51326.2021.9415543","url":null,"abstract":"The use of artificial intelligence is foreseen to be pervasive in future mobile radio networks, enabling dynamic and proactive radio resource provisioning and allocation as well as end-to-end optimization of the network architecture. Current approaches in mobile radio networks commonly assume having a complete batch of data on the specific network element when optimizing and adapting the network working configuration. Such a pipeline is at odds with the increasing complexity and extreme flexibility of 5G and next generation systems where reconfiguration decisions might be taken rather frequently, and with only few data available. In this paper, we focus on the problem of predicting channel quality and average number of active user equipment when a limited amount of data is available from the cell to predict and a high number of predictions need to be carried out simultaneously. We propose a transfer learning framework based on one dimensional convolutional neural networks and explore several models with different complexity overhead for the prediction task across 100 cells. The performance of the proposed framework is validated against classical machine learning approaches in terms of accuracy and computation time when varying the amount of data available for training. Achieved results indicate that transfer learning outperforms the “non-transfer” approaches, specifically when the amount of data available from the cell to predict is scarce.","PeriodicalId":103530,"journal":{"name":"2021 16th Annual Conference on Wireless On-demand Network Systems and Services Conference (WONS)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123172369","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":"16th Conference on Wireless On-demand Network Systems and Services","authors":"","doi":"10.23919/wons51326.2021.9415610","DOIUrl":"https://doi.org/10.23919/wons51326.2021.9415610","url":null,"abstract":"16th Conference on Wireless On-demand Network Systems and Services (WONS 2021) took place virtually from March 8th to March 11th 2021.","PeriodicalId":103530,"journal":{"name":"2021 16th Annual Conference on Wireless On-demand Network Systems and Services Conference (WONS)","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123328934","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}
Ameer Shakayb Arsalaan, Hung T. T. Nguyen, Mah-Rukh Fida
{"title":"Impact of Bushfire Dynamics on the Performance of MANETs","authors":"Ameer Shakayb Arsalaan, Hung T. T. Nguyen, Mah-Rukh Fida","doi":"10.23919/WONS51326.2021.9415616","DOIUrl":"https://doi.org/10.23919/WONS51326.2021.9415616","url":null,"abstract":"In emergency situations like recent Australian bushfires, it is crucial for civilians and firefighters to receive critical information such as escape routes and safe sheltering points with guarantees on information quality attributes. Mobile Ad-hoc Networks (MANETs) can provide communications in bushfire when fixed infrastructure is destroyed and not available. Current MANET solutions, however, are mostly tested under static bushfire scenario. In this work, we investigate the impact of a realistic dynamic bushfire in a dry eucalypt forest with a shrubby understory, on the performance of data delivery solutions in a MANET. Simulation results show a significant degradation in the performance of state-of-the-art MANET quality of information solution. Other than frequent source handovers and reduced user usability, packet arrival latency increases by more than double in the 1st quartile with a median drop of 74.5 % in the overall packet delivery ratio. It is therefore crucial for MANET solutions to be thoroughly evaluated under realistic dynamic bushfire scenarios.","PeriodicalId":103530,"journal":{"name":"2021 16th Annual Conference on Wireless On-demand Network Systems and Services Conference (WONS)","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121671810","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 Simple Decentralized Timeslot Synchronization Algorithm for Large-Scale Wireless IoT Networks","authors":"Gurusanthosh Pabbisetty, Hiroki Mori","doi":"10.23919/WONS51326.2021.9415588","DOIUrl":"https://doi.org/10.23919/WONS51326.2021.9415588","url":null,"abstract":"Rapid growth in use of wireless IoT sensors to realize smart lighting / homes / factories would add a precious asset to the existing infrastructure i.e. numerous wireless devices, which are used to transfer sensed parameters. Various applications (such as indoor localization) could be realized with this asset if it is possible to collect wireless parameters such as RSSI among all IoT sensors. An efficient way is to use token-based TDMA mechanisms where every sensor gets a transmission opportunity in the assigned timeslot. But, synchronizing timeslots to identify transmission instant in a large-scale sensor network is a challenging task. In this paper, we propose a simple decentralized timeslot synchronization algorithm that could realize any TDMA based RSSI accumulation protocol in an ultra-efficient way compared to conventional schemes and evaluated using an event based simulator developed in Matlab.","PeriodicalId":103530,"journal":{"name":"2021 16th Annual Conference on Wireless On-demand Network Systems and Services Conference (WONS)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126328325","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":"Outage Probability Analysis of UAV Assisted Mobile Communications in THz Channel","authors":"Sara Farrag, E. Maher, A. El-Mahdy, F. Dressler","doi":"10.23919/WONS51326.2021.9415590","DOIUrl":"https://doi.org/10.23919/WONS51326.2021.9415590","url":null,"abstract":"THz Communications are attractive candidate for providing ultra high data rate required by 5G and beyond. Unmanned Aerial Vehicle (UAV) is an emerging facility which can be used to assist wireless communications. In this paper, we consider a single-cell cellular network with a UAV that works as a decode-and-forward (DF) relay in full-duplex (FD) mode to assist a base station (BS) and extend its coverage over THz channel. A number of underlay device-to-device (D2D) pairs that communicate with each other and reuse the cellular resources is also considered. The outage probability of the link between the BS and a mobile device (MD) is derived in the presence of the interference of the D2D devices that share the same frequency band. The transmit powers of the MD and the UAV that minimize the outage probability are derived and compared with that of fixed power allocation. Numerical results show that the outage probability obtained using the proposed optimum power allocation scheme is decreased by 20% from the outage probability obtained using fixed power allocation scheme.","PeriodicalId":103530,"journal":{"name":"2021 16th Annual Conference on Wireless On-demand Network Systems and Services Conference (WONS)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122389958","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}
Dimitrios Papakostas, Theodoros Kasidakis, E. Fragkou, Dimitrios Katsaros
{"title":"Backbones for Internet of Battlefield Things","authors":"Dimitrios Papakostas, Theodoros Kasidakis, E. Fragkou, Dimitrios Katsaros","doi":"10.23919/WONS51326.2021.9415560","DOIUrl":"https://doi.org/10.23919/WONS51326.2021.9415560","url":null,"abstract":"The Internet of Battlefield Things is a relatively new cyberphysical system and even though it shares a lot of concepts from the Internet of Things and wireless ad hoc networking in general, a lot of research is required to address its scale and peculiarities. In this article we examine a fundamental problem pertaining to the routing/dissemination of information, namely the construction of a backbone. We model an IoBT ad hoc network as a multilayer network and employ the concept of domination for multilayer networks which is a complete departure from the volume of earlier works, in order to select sets of nodes that will support the routing of information. Even though there is huge literature on similar topics during the past many years, the problem in military (IoBT) networks is quite different since these wireless networks are multilayer networks and treating them as a single (flat) network or treating each layer in isolation and calculating dominating set produces submoptimal or bad solutions; thus all the past literature which deals with single layer (flat) networks is in principle inappropriate. We design a new, distributed algorithm for calculating connected dominating sets which produces dominating sets of small cardinality. We evaluate the proposed algorithm on synthetic topologies, and compare it against the only two existing competitors. The proposed algorithm establishes itself as the clear winner in all experiments.","PeriodicalId":103530,"journal":{"name":"2021 16th Annual Conference on Wireless On-demand Network Systems and Services Conference (WONS)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134322885","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":"Use of a Weighted Conflict Graph in the Channel Selection Operation for Wi-Fi Networks","authors":"Lafdal Abdelwedoud, A. Busson, I. G. Lassous","doi":"10.23919/WONS51326.2021.9415558","DOIUrl":"https://doi.org/10.23919/WONS51326.2021.9415558","url":null,"abstract":"Allocation algorithms in IEEE 802.11-based WLAN, that consist to associate to each AP a channel, are mainly based on a conflict graph that represents the conflicts (interference, CCA detection, etc.) between APs. In this paper, we propose to use an enriched version of the conflict graph, namely a weighted conflict graph. This latter models the CCA detection that can be total (all transmissions are detected) or partial. Beside, a model is given to compute the throughput of each AP for a given allocation. This model is combined to a greedy algorithm that aims to find the allocation that maximizes the proportional fairness. Simulations based on the recent IEEE 802.11ax amendment are carried out for small WLANs with a few APs and very dense networks. Results show that when the network is dense or constrained, there is a gain to consider partial detection.","PeriodicalId":103530,"journal":{"name":"2021 16th Annual Conference on Wireless On-demand Network Systems and Services Conference (WONS)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114880258","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}
Gregor Cerar, Halil Yetgin, M. Mohorčič, C. Fortuna
{"title":"Learning to Fairly Classify the Quality of Wireless Links","authors":"Gregor Cerar, Halil Yetgin, M. Mohorčič, C. Fortuna","doi":"10.23919/WONS51326.2021.9415540","DOIUrl":"https://doi.org/10.23919/WONS51326.2021.9415540","url":null,"abstract":"Machine learning (ML) has been used to develop increasingly accurate link quality estimators for wireless networks. However, more in depth questions regarding the most suitable class of models, most suitable metrics and model performance on imbalanced datasets remain open. In this paper, we propose a new tree based link quality classifier that meets high performance and fairly classifies the minority class and, at the same time, incurs low training cost. We compare the tree based model, to a multilayer perceptron non-linear model and two linear models, namely logistic regression and support vector machine, on a selected imbalanced dataset and evaluate their results using five different performance metrics. Our study shows that 1) non-linear models perform slightly better than linear models in general, 2) the proposed non linear tree-based model yields the best performance trade-off considering F1, training time and fairness, 3) single metric aggregated evaluations based only on accuracy can hide poor, unfair performance especially on minority classes, and 4) it is possible to improve the performance on minority classes, by over 40% through feature selection and by over 20% through resampling, therefore leading to fairer classification results.","PeriodicalId":103530,"journal":{"name":"2021 16th Annual Conference on Wireless On-demand Network Systems and Services Conference (WONS)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121800188","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}