Pub Date : 2019-06-24DOI: 10.1109/IWCMC.2019.8766497
Walid Mallat, W. H. Alouane, H. Boujemaa, F. Touati
In this paper, we focus on the half-duplex (HD) relaying with partial relay selection (PRS) scheme using destination-assisted jamming (DAJ). We consider one source (S), one destination (D), one passive eavesdropper and multiple amplify-and-forward (AF) relays. The relay node is selected based on the best instantaneous signal-to-noise ratio (SNR) of the first hop. Closed-form expressions for lower-bound of ergodic secrecy capacity (ESC) and secrecy outage probability (SOP) are derived over independent and identically distributed (i.i.d.) Rayleigh fading environment. Moreover, we present a comparison between the proposed system and the secure AF relaying system with reactive relay selection (RRS). In the RRS, the relay is chosen based on the best SNR of the second hop. Simulation results are presented to verify the exactness of our proposed mathematical analysis.
{"title":"Secure half-duplex dual-hop AF relaying networks with partial relay selection","authors":"Walid Mallat, W. H. Alouane, H. Boujemaa, F. Touati","doi":"10.1109/IWCMC.2019.8766497","DOIUrl":"https://doi.org/10.1109/IWCMC.2019.8766497","url":null,"abstract":"In this paper, we focus on the half-duplex (HD) relaying with partial relay selection (PRS) scheme using destination-assisted jamming (DAJ). We consider one source (S), one destination (D), one passive eavesdropper and multiple amplify-and-forward (AF) relays. The relay node is selected based on the best instantaneous signal-to-noise ratio (SNR) of the first hop. Closed-form expressions for lower-bound of ergodic secrecy capacity (ESC) and secrecy outage probability (SOP) are derived over independent and identically distributed (i.i.d.) Rayleigh fading environment. Moreover, we present a comparison between the proposed system and the secure AF relaying system with reactive relay selection (RRS). In the RRS, the relay is chosen based on the best SNR of the second hop. Simulation results are presented to verify the exactness of our proposed mathematical analysis.","PeriodicalId":363800,"journal":{"name":"2019 15th International Wireless Communications & Mobile Computing Conference (IWCMC)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114578341","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 : 2019-06-24DOI: 10.1109/IWCMC.2019.8766579
Haijun Liao, Zhenyu Zhou, Xiongwen Zhao, B. Ai, S. Mumtaz
Vehicular fog computing (VFC) has emerged as a cost-efficient solution for task processing in vehicular networks. However, how to realize stable and reliable task offloading under information uncertainty remains a critical challenge. In this paper, we propose a matching-learning-based task offloading algorithm to address this challenge. First, a low-complexity and stable task offloading mechanism is proposed to minimize the total network delay based on the pricing-based matching. Second, we extend the work to the scenario of information uncertainty, and develop a matching-learning-based task offloading algorithm by combining matching theory and upper confidence bound (UCB) algorithm. Simulation results demonstrate that the proposed algorithm can achieve bounded deviation from the optimal performance without the global information.
{"title":"Task Offloading for Vehicular Fog Computing under Information Uncertainty: A Matching-Learning Approach","authors":"Haijun Liao, Zhenyu Zhou, Xiongwen Zhao, B. Ai, S. Mumtaz","doi":"10.1109/IWCMC.2019.8766579","DOIUrl":"https://doi.org/10.1109/IWCMC.2019.8766579","url":null,"abstract":"Vehicular fog computing (VFC) has emerged as a cost-efficient solution for task processing in vehicular networks. However, how to realize stable and reliable task offloading under information uncertainty remains a critical challenge. In this paper, we propose a matching-learning-based task offloading algorithm to address this challenge. First, a low-complexity and stable task offloading mechanism is proposed to minimize the total network delay based on the pricing-based matching. Second, we extend the work to the scenario of information uncertainty, and develop a matching-learning-based task offloading algorithm by combining matching theory and upper confidence bound (UCB) algorithm. Simulation results demonstrate that the proposed algorithm can achieve bounded deviation from the optimal performance without the global information.","PeriodicalId":363800,"journal":{"name":"2019 15th International Wireless Communications & Mobile Computing Conference (IWCMC)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117126851","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 : 2019-06-24DOI: 10.1109/IWCMC.2019.8766662
Shuangli Wu, Wei Mao, Tao Hong, Cong Liu, M. Kadoch
Nowadays, IoT video applications are in a sharp rise, various real-time video streaming of video surveillance systems transmitted via Internet are widely investigated. The real-time video surveillance can actively monitor and detect the abnormal events in time. In 5G HetNets, we specifically develop a compressed sensing based linear predictor to predict the traffic load at the next moment. The results justify that our proposed method can forecast the traffic load and improve system performance.
{"title":"Compressed Sensing Based Traffic Prediction For 5G HetNet IoT Video Streaming","authors":"Shuangli Wu, Wei Mao, Tao Hong, Cong Liu, M. Kadoch","doi":"10.1109/IWCMC.2019.8766662","DOIUrl":"https://doi.org/10.1109/IWCMC.2019.8766662","url":null,"abstract":"Nowadays, IoT video applications are in a sharp rise, various real-time video streaming of video surveillance systems transmitted via Internet are widely investigated. The real-time video surveillance can actively monitor and detect the abnormal events in time. In 5G HetNets, we specifically develop a compressed sensing based linear predictor to predict the traffic load at the next moment. The results justify that our proposed method can forecast the traffic load and improve system performance.","PeriodicalId":363800,"journal":{"name":"2019 15th International Wireless Communications & Mobile Computing Conference (IWCMC)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129958377","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 : 2019-06-24DOI: 10.1109/IWCMC.2019.8766484
Armed Tusha, Seda Doğan, H. Arslan
Next generation of wireless communication systems is expected to support a wide set of applications and use cases. Among these, applications with ultra-reliable and low-latency communications (URLLC) are at utmost importance due to stringent requirements. In this work, single carrier (SC) transmission is considered as a promising solution to meet demands of systems with URLLC. Firstly, SC system parameters affecting reliability and latency are comprehensively explained. Additionally, these parameters are optimized in time and frequency domain to achieve URLLC. Later, adaptive roll-off factor usage within a SC block is proposed to provide more efficient resource utilization. Trade-offs between reliability, latency and system efficiency are shown via computer based simulations. SC transmission inherently offers flexible structure to optimize the trade-offs through proper parameter selection.
{"title":"Single Carrier Transmission for URLLC with Adaptive Radio Resource Utilization","authors":"Armed Tusha, Seda Doğan, H. Arslan","doi":"10.1109/IWCMC.2019.8766484","DOIUrl":"https://doi.org/10.1109/IWCMC.2019.8766484","url":null,"abstract":"Next generation of wireless communication systems is expected to support a wide set of applications and use cases. Among these, applications with ultra-reliable and low-latency communications (URLLC) are at utmost importance due to stringent requirements. In this work, single carrier (SC) transmission is considered as a promising solution to meet demands of systems with URLLC. Firstly, SC system parameters affecting reliability and latency are comprehensively explained. Additionally, these parameters are optimized in time and frequency domain to achieve URLLC. Later, adaptive roll-off factor usage within a SC block is proposed to provide more efficient resource utilization. Trade-offs between reliability, latency and system efficiency are shown via computer based simulations. SC transmission inherently offers flexible structure to optimize the trade-offs through proper parameter selection.","PeriodicalId":363800,"journal":{"name":"2019 15th International Wireless Communications & Mobile Computing Conference (IWCMC)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129524264","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 : 2019-06-24DOI: 10.1109/IWCMC.2019.8766771
M. Smari, S. Dakhli, F. Choubani
A frequency-reconfigurable coplanar-waveguide (CPW) fed monopole antenna using switchable capacitively loaded loops (CLLs) is reported. Two open circuits used as switches are employed in the CLLs elements to make the antenna frequency-reconfigurable in four operating modes: a single-band mode (2.2–2.7GHz), two dual-band mode : (0.8 to 1.1GHz/2.2-3GHz), then (1.5–2.2GHz/ 2.8–3.2GHz) and a triple-band mode (0.8–1GHz/ 1.6 to 2.2 GHz /2.6–3.1GHz). The monopole antenna is resonating at 2.45 GHz, while the CLL elements produce other operating frequency bands covering a number of wireless communication systems, including GSM, DCS, UMTS, WLAN, WiMAX and S-band. The simulated results of return loss, surface currents distribution and radiation patterns are presented and discussed.
{"title":"A Frequency-Reconfigurable Printed Antenna with Switchable Capacitively Loaded Loops","authors":"M. Smari, S. Dakhli, F. Choubani","doi":"10.1109/IWCMC.2019.8766771","DOIUrl":"https://doi.org/10.1109/IWCMC.2019.8766771","url":null,"abstract":"A frequency-reconfigurable coplanar-waveguide (CPW) fed monopole antenna using switchable capacitively loaded loops (CLLs) is reported. Two open circuits used as switches are employed in the CLLs elements to make the antenna frequency-reconfigurable in four operating modes: a single-band mode (2.2–2.7GHz), two dual-band mode : (0.8 to 1.1GHz/2.2-3GHz), then (1.5–2.2GHz/ 2.8–3.2GHz) and a triple-band mode (0.8–1GHz/ 1.6 to 2.2 GHz /2.6–3.1GHz). The monopole antenna is resonating at 2.45 GHz, while the CLL elements produce other operating frequency bands covering a number of wireless communication systems, including GSM, DCS, UMTS, WLAN, WiMAX and S-band. The simulated results of return loss, surface currents distribution and radiation patterns are presented and discussed.","PeriodicalId":363800,"journal":{"name":"2019 15th International Wireless Communications & Mobile Computing Conference (IWCMC)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128036852","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 : 2019-06-24DOI: 10.1109/IWCMC.2019.8766755
Dajian Xu, Gengxin Zhang, Xiaojin Ding
In recent years, the Internet of Things (IoT) technology has shown a good momentum of development and has been widely used in various fields of society. Satellite IoT, as an important complement and extension of the ground IoT, provides services in areas where oceanic and desert areas cannot build terrestrial IoT base stations. However, due to limited spectrum resources, spectrum sharing between terrestrial IoT and satellite IoT is likely to be required, which will inevitably lead to uplink and downlink co-channel interference between systems. This paper analyzes various interference scenarios that may occur on the uplink and downlink of terrestrial IoT and satellite IoT. Then, we establishes a global dynamic model of interference volume, and obtains the dynamic distribution of global interference of low-orbit satellite IoT through simulation. Finally, the paper uses the low-orbit satellite IoT global interference scenarios, interference distribution model and interference analysis model to obtain the dynamic analysis of the global uplink and downlink interference of the low-orbit satellite IoT, and uses the interference analysis results to give suggestions for the deployment of Low-orbit Satellite IoT.
{"title":"Analysis of Co-channel Interference in Low-orbit Satellite Internet of Things","authors":"Dajian Xu, Gengxin Zhang, Xiaojin Ding","doi":"10.1109/IWCMC.2019.8766755","DOIUrl":"https://doi.org/10.1109/IWCMC.2019.8766755","url":null,"abstract":"In recent years, the Internet of Things (IoT) technology has shown a good momentum of development and has been widely used in various fields of society. Satellite IoT, as an important complement and extension of the ground IoT, provides services in areas where oceanic and desert areas cannot build terrestrial IoT base stations. However, due to limited spectrum resources, spectrum sharing between terrestrial IoT and satellite IoT is likely to be required, which will inevitably lead to uplink and downlink co-channel interference between systems. This paper analyzes various interference scenarios that may occur on the uplink and downlink of terrestrial IoT and satellite IoT. Then, we establishes a global dynamic model of interference volume, and obtains the dynamic distribution of global interference of low-orbit satellite IoT through simulation. Finally, the paper uses the low-orbit satellite IoT global interference scenarios, interference distribution model and interference analysis model to obtain the dynamic analysis of the global uplink and downlink interference of the low-orbit satellite IoT, and uses the interference analysis results to give suggestions for the deployment of Low-orbit Satellite IoT.","PeriodicalId":363800,"journal":{"name":"2019 15th International Wireless Communications & Mobile Computing Conference (IWCMC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117006053","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 : 2019-06-24DOI: 10.1109/IWCMC.2019.8766736
Khaoula Braiki, H. Youssef
Cloud computing faces many challenges which constitute research problems. The key challenge is to achieve good resource management that will result in minimum energy consumption. This problem has been the subject of extensive research. In this paper, we report major solutions to the existing work proposed for the infrastructure cloud. We categorize these solutions based on approach optimization, used methods, and objective models. The latter are introduced by mathematical formulations that may be classified as mono-objective and multi-objective formulations. Typically, the single objective takes into account energy. Whereas, the multi-objective considers others, like resource utilization. Extensive simulation, using cloudsim, shows that the multi-objective formulations provide significant improvement than the mono-objective ones. Indeed, the results show an improvement of as much as 12% in the average energy consumption and 15% in the average resource utilization.
{"title":"Resource Management in Cloud Data Centers: A Survey","authors":"Khaoula Braiki, H. Youssef","doi":"10.1109/IWCMC.2019.8766736","DOIUrl":"https://doi.org/10.1109/IWCMC.2019.8766736","url":null,"abstract":"Cloud computing faces many challenges which constitute research problems. The key challenge is to achieve good resource management that will result in minimum energy consumption. This problem has been the subject of extensive research. In this paper, we report major solutions to the existing work proposed for the infrastructure cloud. We categorize these solutions based on approach optimization, used methods, and objective models. The latter are introduced by mathematical formulations that may be classified as mono-objective and multi-objective formulations. Typically, the single objective takes into account energy. Whereas, the multi-objective considers others, like resource utilization. Extensive simulation, using cloudsim, shows that the multi-objective formulations provide significant improvement than the mono-objective ones. Indeed, the results show an improvement of as much as 12% in the average energy consumption and 15% in the average resource utilization.","PeriodicalId":363800,"journal":{"name":"2019 15th International Wireless Communications & Mobile Computing Conference (IWCMC)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131509534","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 : 2019-06-24DOI: 10.1109/IWCMC.2019.8766549
Ferdawss Douma, R. Braham
Wireless Body Area Networks (WBANs) have shown their important impact in healthcare systems since the deployment of these networks allows remote medical monitoring at a lower cost. In this work, we evaluate the performance of two standards: IEEE802.15.6 and IEEE802.15.4 when applied in a healthcare system scenario. We compare their communication modes and access mechanisms. Finally, we propose modifications to IEEE 802.15.6 access mode to enhance its performance. Simulation result demonstrates that the proposed modification improves the protocol performance in terms of packets latency and received packets number.
{"title":"Body Area Networks MAC Protocols for Healthcare: Performance Evaluation","authors":"Ferdawss Douma, R. Braham","doi":"10.1109/IWCMC.2019.8766549","DOIUrl":"https://doi.org/10.1109/IWCMC.2019.8766549","url":null,"abstract":"Wireless Body Area Networks (WBANs) have shown their important impact in healthcare systems since the deployment of these networks allows remote medical monitoring at a lower cost. In this work, we evaluate the performance of two standards: IEEE802.15.6 and IEEE802.15.4 when applied in a healthcare system scenario. We compare their communication modes and access mechanisms. Finally, we propose modifications to IEEE 802.15.6 access mode to enhance its performance. Simulation result demonstrates that the proposed modification improves the protocol performance in terms of packets latency and received packets number.","PeriodicalId":363800,"journal":{"name":"2019 15th International Wireless Communications & Mobile Computing Conference (IWCMC)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128599907","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 : 2019-06-24DOI: 10.1109/IWCMC.2019.8766626
Adel Thaljaoui, N. Nasri, T. Val, Sami Mahfoudhi, Damien Brulin
Bluetooth Low Energy (BLE) has revealed for decades many interesting opportunities especially in the field of positioning that made of it one of the most used technologies in indoor localization solutions. The system we propose is a combination of BLE, Acoustic and LiFi technologies. Our approach is not just arithmetic but using real time computed metrics that act precision indicators or "Dilution of precision" (DOP) weights of the results given by each technology. Depending on these DOP-like indicators, we were able to judge how much precise and accurate the returned results are. Our new approach was confirmed during experiments showing that the precision of this new hybrid system is much better when using these new precision metrics.
{"title":"Evaluating Precision of a new Hybrid Indoor Localization System","authors":"Adel Thaljaoui, N. Nasri, T. Val, Sami Mahfoudhi, Damien Brulin","doi":"10.1109/IWCMC.2019.8766626","DOIUrl":"https://doi.org/10.1109/IWCMC.2019.8766626","url":null,"abstract":"Bluetooth Low Energy (BLE) has revealed for decades many interesting opportunities especially in the field of positioning that made of it one of the most used technologies in indoor localization solutions. The system we propose is a combination of BLE, Acoustic and LiFi technologies. Our approach is not just arithmetic but using real time computed metrics that act precision indicators or \"Dilution of precision\" (DOP) weights of the results given by each technology. Depending on these DOP-like indicators, we were able to judge how much precise and accurate the returned results are. Our new approach was confirmed during experiments showing that the precision of this new hybrid system is much better when using these new precision metrics.","PeriodicalId":363800,"journal":{"name":"2019 15th International Wireless Communications & Mobile Computing Conference (IWCMC)","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115756937","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 : 2019-06-24DOI: 10.1109/IWCMC.2019.8766548
Cong Han, Siya Xu, Shaoyong Guo, Xue-song Qiu, Ao Xiong, Peng Yu, Kunya Guo, Dong Guo
Network Function Virtualization (NFV) promises a significant advantage for IoT operators to steer substantial customizable service through a sequence of virtual network function (VNF). Service Function Chain (SFC) mapping is a key problem in IoT network resource allocation. There are two challenges in virtual resource allocation include: 1) how to map SFC requests to appropriate devices in the right sequence; 2) how to assure QoS requirements of SFC requests. Therefore, to meet the sharp increase of IoT traffic amounts and the diversification of IoT service requirements, a multi-objective service function chain mapping mechanism is proposed with two sub-mechanisms. First, a SFC mapping algorithm is designed to embed VNFs onto the substrate layer based on cost and load balancing. Then a reliability-aware SFC backup algorithm combining SFC backup and VNF backup is presented to economically and efficiently improve service reliability. The simulation results show that the algorithm can significantly improve the acceptance ratio of SFC requests, reduce cost, ensure network balance, and achieve long-term sustainable operation of the network.
{"title":"A Multi-objective Service Function Chain Mapping Mechanism for IoT networks","authors":"Cong Han, Siya Xu, Shaoyong Guo, Xue-song Qiu, Ao Xiong, Peng Yu, Kunya Guo, Dong Guo","doi":"10.1109/IWCMC.2019.8766548","DOIUrl":"https://doi.org/10.1109/IWCMC.2019.8766548","url":null,"abstract":"Network Function Virtualization (NFV) promises a significant advantage for IoT operators to steer substantial customizable service through a sequence of virtual network function (VNF). Service Function Chain (SFC) mapping is a key problem in IoT network resource allocation. There are two challenges in virtual resource allocation include: 1) how to map SFC requests to appropriate devices in the right sequence; 2) how to assure QoS requirements of SFC requests. Therefore, to meet the sharp increase of IoT traffic amounts and the diversification of IoT service requirements, a multi-objective service function chain mapping mechanism is proposed with two sub-mechanisms. First, a SFC mapping algorithm is designed to embed VNFs onto the substrate layer based on cost and load balancing. Then a reliability-aware SFC backup algorithm combining SFC backup and VNF backup is presented to economically and efficiently improve service reliability. The simulation results show that the algorithm can significantly improve the acceptance ratio of SFC requests, reduce cost, ensure network balance, and achieve long-term sustainable operation of the network.","PeriodicalId":363800,"journal":{"name":"2019 15th International Wireless Communications & Mobile Computing Conference (IWCMC)","volume":"293 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116528524","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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