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2021 IEEE 93rd Vehicular Technology Conference (VTC2021-Spring)最新文献

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Low-latency Sliding-window Recoding 低延迟滑动窗口重编码
2021 IEEE 93rd Vehicular Technology Conference (VTC2021-Spring) Pub Date : 2021-04-01 DOI: 10.1109/VTC2021-Spring51267.2021.9449001
Elif Tasdemir, Máté Tömösközi, H. Salah, F. Fitzek
{"title":"Low-latency Sliding-window Recoding","authors":"Elif Tasdemir, Máté Tömösközi, H. Salah, F. Fitzek","doi":"10.1109/VTC2021-Spring51267.2021.9449001","DOIUrl":"https://doi.org/10.1109/VTC2021-Spring51267.2021.9449001","url":null,"abstract":"In wireless multi-hop and multi-path computer networks, such as the ones that potentially emerge with Internet of Things (IoT) deployments, channel coding has become a tried and tested solution to handle packet losses. Random Linear Network Coding (RLNC) is one of such block coding techniques, which also provides the unique feature of recoding already coded symbols on intermediate nodes, thereby increasing the general throughput of the network. However, the computation overhead of decoding on the receiver device counteracts the much desired low-latency requirements of various fifth generation (5G) use cases. Sliding-window RLNC is a technique, which can minimize such overheads. Nonetheless, recoding over a sliding window destroys the low-latency decodable properties of the scheme. In this paper we present a low-latency recoding technique that balances packet forwarding and recoding on the intermediate nodes in way that potentially preserves the sliding window characteristics. Our simulation results show that the performance of the proposed recoding algorithm achieves a two factor improvement in latency and losses, as well as a more than three times gain in throughput.","PeriodicalId":194840,"journal":{"name":"2021 IEEE 93rd Vehicular Technology Conference (VTC2021-Spring)","volume":"2006 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117043347","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}
引用次数: 1
Optimal Carrier Sensing Range in Coexisting Wireless Networks 共存无线网络中最优载波感知距离
2021 IEEE 93rd Vehicular Technology Conference (VTC2021-Spring) Pub Date : 2021-04-01 DOI: 10.1109/VTC2021-Spring51267.2021.9448688
Luis Irio, Rodolfo Oliveira, D. B. D. Costa, U. Dias
{"title":"Optimal Carrier Sensing Range in Coexisting Wireless Networks","authors":"Luis Irio, Rodolfo Oliveira, D. B. D. Costa, U. Dias","doi":"10.1109/VTC2021-Spring51267.2021.9448688","DOIUrl":"https://doi.org/10.1109/VTC2021-Spring51267.2021.9448688","url":null,"abstract":"This paper derives a model that computes the optimal carrier sensing range adopted by transmitters of a Carrier Sense Multiple Access (CSMA) network when multiple wireless networks coexist in the same band. To investigate the optimal carrier sensing range, we define a utility function that considers the impact of the carrier sensing threshold in the medium access probability and the transport capacity of a CSMA transmitter. Consequently, the definition of the carrier sensing range is a tradeoff between the avoidance of low channel access probability due to low carrier sensing thresholds and the avoidance of a high number of concurrent transmissions (collisions) per unit area due to high carrier sensing thresholds. Considering the aggregate power sensed by a CSMA node, we derive a method to compute the optimal carrier sensing range. The proposed solution is adopted in two different scenarios, considering the cases when the coexisting networks are spatially overlapped or non-overlapped. Extensive simulation results indicate that the optimal carrier sensing range is accurately approximated for the two scenarios, and higher optimal carrier sensing ranges are obtained for the overlapped scenario. The proposed method is a useful tool to find the optimal carrier sensing range when the spatial distribution of the coexisting networks is known.","PeriodicalId":194840,"journal":{"name":"2021 IEEE 93rd Vehicular Technology Conference (VTC2021-Spring)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117342046","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}
引用次数: 0
LoRa Signal Demodulation Using Deep Learning, a Time-Domain Approach LoRa信号解调使用深度学习，一种时域方法
2021 IEEE 93rd Vehicular Technology Conference (VTC2021-Spring) Pub Date : 2021-04-01 DOI: 10.1109/VTC2021-Spring51267.2021.9448711
Kosta Dakic, Bassel Al Homssi, A. Al-Hourani, M. Lech
{"title":"LoRa Signal Demodulation Using Deep Learning, a Time-Domain Approach","authors":"Kosta Dakic, Bassel Al Homssi, A. Al-Hourani, M. Lech","doi":"10.1109/VTC2021-Spring51267.2021.9448711","DOIUrl":"https://doi.org/10.1109/VTC2021-Spring51267.2021.9448711","url":null,"abstract":"The LoRa modulation scheme is becoming one of the most adopted Internet of Things wireless physical layer due to its ability to transmit data over long distances with low power requirements. Typical demodulation techniques for LoRa utilize variants of non-coherent Frequency Shift Keying demodulation. This paper aims to capitalize on the robustness of deep learning techniques, specifically by using convolutional neural networks to demodulate LoRa symbols. We achieve this by building a dataset consisting of emulated time-domain LoRa symbols across a range of channel impairments; namely, we examine additive white Gaussian noise together with carrier frequency offset and time offset. The presented results show an improvement when utilizing deep learning over typical non-coherent detection while performing very close to the optimal matched filter.","PeriodicalId":194840,"journal":{"name":"2021 IEEE 93rd Vehicular Technology Conference (VTC2021-Spring)","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117348360","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}
引用次数: 7
Hybrid Connectivity for Autonomous Vehicles: Conceptual View & Initial Results 自动驾驶汽车的混合连接:概念视图和初步结果
2021 IEEE 93rd Vehicular Technology Conference (VTC2021-Spring) Pub Date : 2021-04-01 DOI: 10.1109/VTC2021-Spring51267.2021.9448866
A. Yastrebova, T. Ojanperä, J. Mäkelä, M. Höyhtyä
{"title":"Hybrid Connectivity for Autonomous Vehicles: Conceptual View & Initial Results","authors":"A. Yastrebova, T. Ojanperä, J. Mäkelä, M. Höyhtyä","doi":"10.1109/VTC2021-Spring51267.2021.9448866","DOIUrl":"https://doi.org/10.1109/VTC2021-Spring51267.2021.9448866","url":null,"abstract":"Novel services, providing timely and accurate information on road weather, road conditions, or traffic, can enable better road safety and traffic efficiency for connected and automated vehicles (CAV) in the future. The emerging 5G and edge computing solutions create new opportunities for the wide-scale implementation of such services. Yet, it is unlikely that any single communication technology can guarantee service delivery to CAVs in all situations and locations due to the global reach of vehicles. Therefore, this paper proposes a hybrid communication architecture, covering the key satellite and terrestrial technologies, for improving the availability of digital services to CAVs. The architecture and related use cases are analyzed by using sequence diagrams for selected scenarios as well as by conducting initial simulations from terrestrial and satellite network perspectives. The first-pass results presented in the paper provide technologies evaluation in terms of communication range, and connectivity duration, and indicate the advantages of satellite technology as a complementary technology for message transfer and information synchronization.","PeriodicalId":194840,"journal":{"name":"2021 IEEE 93rd Vehicular Technology Conference (VTC2021-Spring)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123496609","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}
引用次数: 5
Index Coded PSK Modulation in Vehicle to Vehicle Communication 车对车通信中的索引编码PSK调制
2021 IEEE 93rd Vehicular Technology Conference (VTC2021-Spring) Pub Date : 2021-04-01 DOI: 10.1109/VTC2021-Spring51267.2021.9448906
Jesy Pachat, Nujoom Sageer Karat, A. Mahesh, Deepthi P. Pattathil, B. Rajan
{"title":"Index Coded PSK Modulation in Vehicle to Vehicle Communication","authors":"Jesy Pachat, Nujoom Sageer Karat, A. Mahesh, Deepthi P. Pattathil, B. Rajan","doi":"10.1109/VTC2021-Spring51267.2021.9448906","DOIUrl":"https://doi.org/10.1109/VTC2021-Spring51267.2021.9448906","url":null,"abstract":"Vehicle to vehicle (V2V) communication has gained its importance in recent years. In this work we consider the index coding problem (ICP) over noisy channel in V2V communication phase of message dissemination. The ICP in V2V communication is considered as device to device ICP with transmitting nodes as receiving nodes also. The index code is used in noisy scenario over AWGN channel and the broadcast vectors are mapped to suitable M-PSK signal constellations to save bandwidth, thus increasing the bandwidth efficiency. An algorithm is proposed to derive suitable mapping of the broadcast vectors to M-PSK signal constellation for improving the error performance. Performance improvement in terms of PSK index coding gain is discussed. While one vehicle transmits, the proposed algorithm provides performance improvement for at least one of the remaining vehicles, in most of the scenarios, while not penalizing the other vehicles.","PeriodicalId":194840,"journal":{"name":"2021 IEEE 93rd Vehicular Technology Conference (VTC2021-Spring)","volume":"44 7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117000196","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}
引用次数: 0
Secure AF Relaying in Power-Constrained UAV Networks 功率受限无人机网络中的安全AF中继
2021 IEEE 93rd Vehicular Technology Conference (VTC2021-Spring) Pub Date : 2021-04-01 DOI: 10.1109/VTC2021-Spring51267.2021.9448853
L. Samara, A. Al-Abbasi, A. Shafie, R. Hamila, N. Al-Dhahir
{"title":"Secure AF Relaying in Power-Constrained UAV Networks","authors":"L. Samara, A. Al-Abbasi, A. Shafie, R. Hamila, N. Al-Dhahir","doi":"10.1109/VTC2021-Spring51267.2021.9448853","DOIUrl":"https://doi.org/10.1109/VTC2021-Spring51267.2021.9448853","url":null,"abstract":"This paper proposes a secure amplify-and-forward (AF) relaying scheme in unmanned aerial vehicle (UAV) networks while accounting for the power consumption limitations of UAVs. Since a UAV's battery life is limited, we propose selecting the UAV relays based on their probability of availability, which we model to be a function of the UAV's power consumption model. Then, physical layer security is achieved by partitioning the limited available relays into information relaying UAVs and cooperative jammers while aiming to maximize the secrecy rate of the network when an eavesdropper is located in the vicinity of the destination node. Meanwhile, the information bearing relays use beamforming to enhance the information delivery to the destination, and the cooperative jamming relays use precoded artificial-noise scheme to degrade the eavesdropping links' received signal-to-noise ratios. Simulation results show significant secrecy rate enhancements when the proposed schemes are adopted compared to conventional relaying scenarios, especially when cooperative jamming is deployed.","PeriodicalId":194840,"journal":{"name":"2021 IEEE 93rd Vehicular Technology Conference (VTC2021-Spring)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117213619","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}
引用次数: 2
Layered Preambles based on NOMA for MTC with Two Different Types of Devices 基于NOMA的两种不同类型设备MTC分层序
2021 IEEE 93rd Vehicular Technology Conference (VTC2021-Spring) Pub Date : 2021-04-01 DOI: 10.1109/VTC2021-Spring51267.2021.9448701
Jinho Choi
{"title":"Layered Preambles based on NOMA for MTC with Two Different Types of Devices","authors":"Jinho Choi","doi":"10.1109/VTC2021-Spring51267.2021.9448701","DOIUrl":"https://doi.org/10.1109/VTC2021-Spring51267.2021.9448701","url":null,"abstract":"In machine-type communication (MTC), random access has been employed for a number of devices and sensors to access uplink channels using a pool of preambles. To support different priorities, random access can be generalized with multiple resource blocks (RBs), which however results in a poor spectral efficiency. In this paper, in order to achieve a high spectral efficiency, random access with layered preambles (RALP) is proposed so that devices of two different priorities, namely type-1 and type-2 devices, can co-exist within one RB based on the notion of power-domain non-orthogonal multiple access (NOMA).","PeriodicalId":194840,"journal":{"name":"2021 IEEE 93rd Vehicular Technology Conference (VTC2021-Spring)","volume":"17 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124012914","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}
引用次数: 1
Impact of RSU Height on 60 GHz mmWave V2I LOS Communication in Multi-lane Highways RSU高度对多车道公路60ghz毫米波V2I LOS通信的影响
2021 IEEE 93rd Vehicular Technology Conference (VTC2021-Spring) Pub Date : 2021-04-01 DOI: 10.1109/VTC2021-Spring51267.2021.9448835
Ananya Chattopadhyay, A. Chandra, C. Bose
{"title":"Impact of RSU Height on 60 GHz mmWave V2I LOS Communication in Multi-lane Highways","authors":"Ananya Chattopadhyay, A. Chandra, C. Bose","doi":"10.1109/VTC2021-Spring51267.2021.9448835","DOIUrl":"https://doi.org/10.1109/VTC2021-Spring51267.2021.9448835","url":null,"abstract":"The WiGig Alliance has recently introduced IEEE 802.11ay that standardizes the use of 60 GHz millimeter-wave (mmWave) frequency band for providing Gbps wireless connectivity on the move. However, for vehicle-to-infrastructure (V2I) systems using such standards, network reliability must be ensured when safety-critical signaling information is exchanged. The signals at mmWave frequencies are more prone to attenuation loss, penetration loss, weather effects and blockage. Therefore, placement of road side units (RSUs) is crucial for directional beam alignment, proper signal projection and vehicle tracking. This paper investigates the minimum RSU height required in multi-lane highways to guarantee all-time 60 GHz line of sight (LOS) connectivity for different lanes. The effect of distance of RSU base from highway is also studied. Further, numerical results analyze how both signal strength and overall system data rate wane with RSU height. These results are extended to other mmWave bands as well.","PeriodicalId":194840,"journal":{"name":"2021 IEEE 93rd Vehicular Technology Conference (VTC2021-Spring)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124045546","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}
引用次数: 3
Sensor Fusion for Drone Detection 无人机探测的传感器融合
2021 IEEE 93rd Vehicular Technology Conference (VTC2021-Spring) Pub Date : 2021-04-01 DOI: 10.1109/VTC2021-Spring51267.2021.9448699
Mohammed Aledhari, Rehma Razzak, R. Parizi, Gautam Srivastava
{"title":"Sensor Fusion for Drone Detection","authors":"Mohammed Aledhari, Rehma Razzak, R. Parizi, Gautam Srivastava","doi":"10.1109/VTC2021-Spring51267.2021.9448699","DOIUrl":"https://doi.org/10.1109/VTC2021-Spring51267.2021.9448699","url":null,"abstract":"With the rapid development of commercial drones, drone detection and classification have emerged and grown recently. Drone detection works to detect unmanned aerial vehicles (UAVs). Usually, systems for drone detection utilize a combination of one or more sensors and some methodology. Many unique technologies and methods are used to detect drones. However, each type of technology offers its benefits and limitations. Most approaches use computer vision or machine learning, but one methodology that has not been given much attention is Sensor Fusion. Sensor Fusion has less uncertainty than most methods, making it suitable for drone detection. In this paper, we propose an artificial neural network-based detection system that uses a deep neural network (DNN) to process the RF data and a convolutional neural network (CNN) to process image data. The features from CNNs and DNNs are concatenated and input into another DNN, which outputs a single prediction score of drone presence. Our model achieved a validation accuracy of 75% that shows the feasibility of a sensor fusion based technique for drone detection.","PeriodicalId":194840,"journal":{"name":"2021 IEEE 93rd Vehicular Technology Conference (VTC2021-Spring)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125814287","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}
引用次数: 10
Optimal Utility of Cooperative Spectrum Sensing for CUAVNs cuavn协同频谱感知的最优效用
2021 IEEE 93rd Vehicular Technology Conference (VTC2021-Spring) Pub Date : 2021-04-01 DOI: 10.1109/VTC2021-Spring51267.2021.9448941
Jun Wu, Jia Zhang, Zehao Chen
{"title":"Optimal Utility of Cooperative Spectrum Sensing for CUAVNs","authors":"Jun Wu, Jia Zhang, Zehao Chen","doi":"10.1109/VTC2021-Spring51267.2021.9448941","DOIUrl":"https://doi.org/10.1109/VTC2021-Spring51267.2021.9448941","url":null,"abstract":"With the increasing demands of unmanned aerial vehicles (UAVs), cooperative spectrum sensing (CSS) is an emerging technology that identifies the unused spectrum for cognitive UAV networks (CUAVNs). However, different from traditional single-slot CSS (SCSS) among multiple independent spectrum sensing nodes, realizing CSS will become a difficult task because of the UAV's location flexibility, the sensing time is limited in particular. For this aim, we formulate a multi-slot CSS (MCSS) among multiple mini-slots of a UAV sensing node to accomplish cooperation in this paper. In order for guaranteeing the achievable throughput of CUAVNs, we make use of the sequential idea to proceed with MCSS within the sensing time constraint. Furthermore, we make an in-depth investigation on the performance, cost and benefit for MCSS. On basis of these analyses, we conduct a utility function to optimize the UAV's utility. Finally, numerical simulation results show that our proposed MSCS is superior than the traditional SCSS, in terms of the CSS performance and utility.","PeriodicalId":194840,"journal":{"name":"2021 IEEE 93rd Vehicular Technology Conference (VTC2021-Spring)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124762263","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}
引用次数: 0
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