Pub Date : 2015-09-01DOI: 10.1109/CAMAD.2015.7390472
Mohammad Galal Khafagyx, Mohamed-Slim Alouinix, S. Aissa
In this work, we evaluate the performance of relay selection over Nakagami-m fading channels in the presence of a cluster of full-duplex decode-and-forward relays with self-interference. Specifically, we derive the exact cumulative distribution function of the end-to-end signal-to-interference-plus-noise ratio in the presence of a direct source-destination link. When a direct link exists, all dual-hop paths become mutually correlated due to the common direct-link interference. The presented exact results enable the evaluation of the outage performance and system throughput for fixed-rate transmission systems. The theoretical findings are verified by numerical simulations, where the severity of fading effect in the residual self-interference link is also discussed.
{"title":"On the performance of future full-duplex relay selection networks","authors":"Mohammad Galal Khafagyx, Mohamed-Slim Alouinix, S. Aissa","doi":"10.1109/CAMAD.2015.7390472","DOIUrl":"https://doi.org/10.1109/CAMAD.2015.7390472","url":null,"abstract":"In this work, we evaluate the performance of relay selection over Nakagami-m fading channels in the presence of a cluster of full-duplex decode-and-forward relays with self-interference. Specifically, we derive the exact cumulative distribution function of the end-to-end signal-to-interference-plus-noise ratio in the presence of a direct source-destination link. When a direct link exists, all dual-hop paths become mutually correlated due to the common direct-link interference. The presented exact results enable the evaluation of the outage performance and system throughput for fixed-rate transmission systems. The theoretical findings are verified by numerical simulations, where the severity of fading effect in the residual self-interference link is also discussed.","PeriodicalId":370856,"journal":{"name":"2015 IEEE 20th International Workshop on Computer Aided Modelling and Design of Communication Links and Networks (CAMAD)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127849378","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 : 2015-09-01DOI: 10.1109/CAMAD.2015.7390476
Boris Galkin, Jacek Kibiłda, L. Dasilva
This paper applies stochastic geometry to model the distribution of downlink transmit power in macro base stations in mobile networks. Using data from cellular 3G deployments in the UK, we find, through hypothesis tests, that the maximum transmit powers of base stations in urban environments are independent of both the local density of base stations and the transmit power of adjacent base stations. Following this, we propose using random assignment from a fixed probability distribution as a model for base station downlink transmit power assignment. This proposed method is shown to be suitable for base station power assignment via goodness-of-fit tests. We also study how different probabilistic and deterministic transmit power assignments to base stations affect the complementary cumulative distribution function of the SINR experienced by a user in the network.
{"title":"Stochastic modelling of downlink transmit power in wireless cellular networks","authors":"Boris Galkin, Jacek Kibiłda, L. Dasilva","doi":"10.1109/CAMAD.2015.7390476","DOIUrl":"https://doi.org/10.1109/CAMAD.2015.7390476","url":null,"abstract":"This paper applies stochastic geometry to model the distribution of downlink transmit power in macro base stations in mobile networks. Using data from cellular 3G deployments in the UK, we find, through hypothesis tests, that the maximum transmit powers of base stations in urban environments are independent of both the local density of base stations and the transmit power of adjacent base stations. Following this, we propose using random assignment from a fixed probability distribution as a model for base station downlink transmit power assignment. This proposed method is shown to be suitable for base station power assignment via goodness-of-fit tests. We also study how different probabilistic and deterministic transmit power assignments to base stations affect the complementary cumulative distribution function of the SINR experienced by a user in the network.","PeriodicalId":370856,"journal":{"name":"2015 IEEE 20th International Workshop on Computer Aided Modelling and Design of Communication Links and Networks (CAMAD)","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126169647","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 : 2015-09-01DOI: 10.1109/CAMAD.2015.7390473
H. Alves, R. Souza, M. Pellenz
This paper gives an brief survey on full-duplex relaying. First, we discuss the importance of full-duplex communications and its major drawback, known as self-interference. We provide a overview of the state-of-the-art on self-interference cancellation techniques from antenna design to digital cancellation. Then, we assess current developments in full-duplex relaying, some promising protocols and we discuss some of the performance analysis carried out so far. Finally, we discuss the importance of full-duplex, more specifically full-duplex relaying, on 5G networks.
{"title":"Brief survey on full-duplex relaying and its applications on 5G","authors":"H. Alves, R. Souza, M. Pellenz","doi":"10.1109/CAMAD.2015.7390473","DOIUrl":"https://doi.org/10.1109/CAMAD.2015.7390473","url":null,"abstract":"This paper gives an brief survey on full-duplex relaying. First, we discuss the importance of full-duplex communications and its major drawback, known as self-interference. We provide a overview of the state-of-the-art on self-interference cancellation techniques from antenna design to digital cancellation. Then, we assess current developments in full-duplex relaying, some promising protocols and we discuss some of the performance analysis carried out so far. Finally, we discuss the importance of full-duplex, more specifically full-duplex relaying, on 5G networks.","PeriodicalId":370856,"journal":{"name":"2015 IEEE 20th International Workshop on Computer Aided Modelling and Design of Communication Links and Networks (CAMAD)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121377237","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 : 2015-09-01DOI: 10.1109/CAMAD.2015.7390499
Yangzhe Liao, M. Leeson, M. Higgins
Implant wireless body area networks (WBANs) are becoming increasingly significant for numerous applications in the healthcare and medical sectors. Here an in-body communication model is proposed, based on a 1 mm resolution mesh kneeling position inhomogeneous 30-year male body model in the 400 MHz medical implant communication service (MICS) band. Firstly, semi-empirical path loss models for numerous homogeneous tissues and a heterogeneous human body model are proposed. Then we investigate the bit error rate (BER) performance using the heterogeneous human body channel model. Coupled with link margin analysis, this model can be applied to future implementations and system design research work.
{"title":"An In-body communication link based on 400 MHz MICS band wireless body area networks","authors":"Yangzhe Liao, M. Leeson, M. Higgins","doi":"10.1109/CAMAD.2015.7390499","DOIUrl":"https://doi.org/10.1109/CAMAD.2015.7390499","url":null,"abstract":"Implant wireless body area networks (WBANs) are becoming increasingly significant for numerous applications in the healthcare and medical sectors. Here an in-body communication model is proposed, based on a 1 mm resolution mesh kneeling position inhomogeneous 30-year male body model in the 400 MHz medical implant communication service (MICS) band. Firstly, semi-empirical path loss models for numerous homogeneous tissues and a heterogeneous human body model are proposed. Then we investigate the bit error rate (BER) performance using the heterogeneous human body channel model. Coupled with link margin analysis, this model can be applied to future implementations and system design research work.","PeriodicalId":370856,"journal":{"name":"2015 IEEE 20th International Workshop on Computer Aided Modelling and Design of Communication Links and Networks (CAMAD)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129100016","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 : 2015-09-01DOI: 10.1109/CAMAD.2015.7390519
Yi Wang, A. Burr, Qinhui Huang
We present a general algebraic framework to define the design criteria of linear functions for linear physical layer network coding (LPNC) over a new network topology, called the dense cooperative wireless cloud network. This network topology employs massively interacting distributed nodes to assist data transmission, which naturally forms a multi-source, multi-hop and multi-relay network structure. We prove two theorems and address the design criteria, which are considered to be the key theoretical basis for real implementation. The proposed work is applicable to a general multihop wireless network, and suitable for linear operations over a commutative ring. We also compare and discuss the simulation results based on the design criteria.
{"title":"Dense Wireless Cloud Network via Physical Layer Network Coding","authors":"Yi Wang, A. Burr, Qinhui Huang","doi":"10.1109/CAMAD.2015.7390519","DOIUrl":"https://doi.org/10.1109/CAMAD.2015.7390519","url":null,"abstract":"We present a general algebraic framework to define the design criteria of linear functions for linear physical layer network coding (LPNC) over a new network topology, called the dense cooperative wireless cloud network. This network topology employs massively interacting distributed nodes to assist data transmission, which naturally forms a multi-source, multi-hop and multi-relay network structure. We prove two theorems and address the design criteria, which are considered to be the key theoretical basis for real implementation. The proposed work is applicable to a general multihop wireless network, and suitable for linear operations over a commutative ring. We also compare and discuss the simulation results based on the design criteria.","PeriodicalId":370856,"journal":{"name":"2015 IEEE 20th International Workshop on Computer Aided Modelling and Design of Communication Links and Networks (CAMAD)","volume":"37 13","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134259907","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 : 2015-09-01DOI: 10.1109/CAMAD.2015.7390518
Yangzhe Liao, M. Leeson, M. Higgins
The performance of six different shapes of pulses is compared for Packet Collision (PC) and Standard Gaussian Approximation (SGA) communication systems, based on the requirements of the Federal Communications Commission (FCC) emission mask. The shapes are a second derivative sinusoid Gaussian pulse, a second order Gaussian pulse and the first four orders of modified Hermite pulses. For the SGA model, the performance of time-hopping (TH) pulse position modulation (PPM) and pulse amplitude modulation (PAM) are compared, in terms of Bit Error Rate (BER). For the PC model, we investigated pulse position modulation (PPM) to analysis the performance from the energy attenuation issue. Results show that the zero order modified Hermite pulse outperforms other pulses in terms of BER in the PC model. It is also found that the performance of both the PC and SGA models will get worse as the number of users increases. The results can be applied to deal with interference issues in wireless body area networks (WBAN) in field of remote health monitoring and telemedicine systems design.
{"title":"Analysis of PC and SGA models for an ultra wide-band ad-hoc network with multiple pulses","authors":"Yangzhe Liao, M. Leeson, M. Higgins","doi":"10.1109/CAMAD.2015.7390518","DOIUrl":"https://doi.org/10.1109/CAMAD.2015.7390518","url":null,"abstract":"The performance of six different shapes of pulses is compared for Packet Collision (PC) and Standard Gaussian Approximation (SGA) communication systems, based on the requirements of the Federal Communications Commission (FCC) emission mask. The shapes are a second derivative sinusoid Gaussian pulse, a second order Gaussian pulse and the first four orders of modified Hermite pulses. For the SGA model, the performance of time-hopping (TH) pulse position modulation (PPM) and pulse amplitude modulation (PAM) are compared, in terms of Bit Error Rate (BER). For the PC model, we investigated pulse position modulation (PPM) to analysis the performance from the energy attenuation issue. Results show that the zero order modified Hermite pulse outperforms other pulses in terms of BER in the PC model. It is also found that the performance of both the PC and SGA models will get worse as the number of users increases. The results can be applied to deal with interference issues in wireless body area networks (WBAN) in field of remote health monitoring and telemedicine systems design.","PeriodicalId":370856,"journal":{"name":"2015 IEEE 20th International Workshop on Computer Aided Modelling and Design of Communication Links and Networks (CAMAD)","volume":"129 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123073435","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 : 2015-09-01DOI: 10.1109/CAMAD.2015.7390529
Trung-Thanh Nguyen, A. Kabbani, Sundar Peethala, T. Kreul, T. Kaiser
The reliability of spectrum sensing is a challenging issue in cognitive radio (CR) systems. In this paper, we validate the reliability of two spectrum sensing algorithms for pilot-added OFDM signals: time-domain symbol cross-correlation (TDSC) and periodical peaks of autocorrelation (PPA) with a real system in real environments. To validate, these two algorithms carry out detection function for real signals captured by a test-bed of cognitive Long Term Evolution Advanced (LTE-A) systems. Moreover, we use a transmission between a vector generator and a spectrum analyzer to cross-check with results by the test-bed. The experimental results agree with each other and with simulated results in previous works. Two algorithms work well in real-environments and are insensitive to noise-uncertainty. The results show that PPA algorithms outperform TDSC algorithms by 1 dB - 2.5 dB with the observation durations in experiments. Additionally, PPA algorithms are suitable for short observations. For example, PPA algorithms can work with a 5 ms duration of 8K mode Digital Video Broadcasting Terrestrial (DVB-T) signals, but TDSC algorithms cannot. The results also show the performance of TDSC and PPA algorithms by a test-bed of cognitive LTE-A systems. They give clues to apply suitable algorithms for different operations such as in-band and out-band sensing modes in cognitive cellular systems.
{"title":"Experiments on spectrum sensing algorithms of pilot-added OFDM signals with a cognitive LTE-A system","authors":"Trung-Thanh Nguyen, A. Kabbani, Sundar Peethala, T. Kreul, T. Kaiser","doi":"10.1109/CAMAD.2015.7390529","DOIUrl":"https://doi.org/10.1109/CAMAD.2015.7390529","url":null,"abstract":"The reliability of spectrum sensing is a challenging issue in cognitive radio (CR) systems. In this paper, we validate the reliability of two spectrum sensing algorithms for pilot-added OFDM signals: time-domain symbol cross-correlation (TDSC) and periodical peaks of autocorrelation (PPA) with a real system in real environments. To validate, these two algorithms carry out detection function for real signals captured by a test-bed of cognitive Long Term Evolution Advanced (LTE-A) systems. Moreover, we use a transmission between a vector generator and a spectrum analyzer to cross-check with results by the test-bed. The experimental results agree with each other and with simulated results in previous works. Two algorithms work well in real-environments and are insensitive to noise-uncertainty. The results show that PPA algorithms outperform TDSC algorithms by 1 dB - 2.5 dB with the observation durations in experiments. Additionally, PPA algorithms are suitable for short observations. For example, PPA algorithms can work with a 5 ms duration of 8K mode Digital Video Broadcasting Terrestrial (DVB-T) signals, but TDSC algorithms cannot. The results also show the performance of TDSC and PPA algorithms by a test-bed of cognitive LTE-A systems. They give clues to apply suitable algorithms for different operations such as in-band and out-band sensing modes in cognitive cellular systems.","PeriodicalId":370856,"journal":{"name":"2015 IEEE 20th International Workshop on Computer Aided Modelling and Design of Communication Links and Networks (CAMAD)","volume":"124 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117333794","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 : 2015-09-01DOI: 10.1109/CAMAD.2015.7390525
N. Yi, Y. Ma, J. Hou, R. Tafazolli
In this paper, we investigate symbol-level selective decode-forward (SDF) relaying for uncoordinated dense wireless networks. The main objective is to establish reliable communications for such wireless networks, which cannot have accurate link budget allocation due to signalling overhead limitation. To approach this goal, a novel half-duplex absolute difference based symbol-level SDF is developed to enjoy diversity gain at destination node with no signalling between relay and destination node. The proposed selection criteria is designed that no preset threshold is needed at relay, i.e., receive SNR threshold for uncoded systems or LLR threshold for coded systems. Therefore, it is more suitable for the considered uncoordinated dense wireless networks. It offers better performance, in terms of symbol error rate (SER), when compared with the conventional always decode-forward (DF) relaying and frame-level SDF. Computer simulations are carried out to evaluate the proposed approach with respect to the frame length and channel gain. Significant performance improvement is observed in terms of both SER and FER with various setup of frame length and channel gain.
{"title":"Symbol-level selective decode-forward relaying for uncoordinated dense wireless networks","authors":"N. Yi, Y. Ma, J. Hou, R. Tafazolli","doi":"10.1109/CAMAD.2015.7390525","DOIUrl":"https://doi.org/10.1109/CAMAD.2015.7390525","url":null,"abstract":"In this paper, we investigate symbol-level selective decode-forward (SDF) relaying for uncoordinated dense wireless networks. The main objective is to establish reliable communications for such wireless networks, which cannot have accurate link budget allocation due to signalling overhead limitation. To approach this goal, a novel half-duplex absolute difference based symbol-level SDF is developed to enjoy diversity gain at destination node with no signalling between relay and destination node. The proposed selection criteria is designed that no preset threshold is needed at relay, i.e., receive SNR threshold for uncoded systems or LLR threshold for coded systems. Therefore, it is more suitable for the considered uncoordinated dense wireless networks. It offers better performance, in terms of symbol error rate (SER), when compared with the conventional always decode-forward (DF) relaying and frame-level SDF. Computer simulations are carried out to evaluate the proposed approach with respect to the frame length and channel gain. Significant performance improvement is observed in terms of both SER and FER with various setup of frame length and channel gain.","PeriodicalId":370856,"journal":{"name":"2015 IEEE 20th International Workshop on Computer Aided Modelling and Design of Communication Links and Networks (CAMAD)","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134029024","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 : 2015-09-01DOI: 10.1109/CAMAD.2015.7390493
Jessica Moysen, L. Giupponi, N. Baldo, J. Mangues‐Bafalluy
This paper aims to find patterns of knowledge from physical layer data coming from Heterogeneous Long Term Evolution (LTE) networks. We discuss how the collected data is employed in such a manner that improves Minimization of Drive Tests (MDT) functionality in LTE networks. In particular we aim to predict Quality of Service (QoS) expressed in terms of throughput of the User Datagram Protocol (UDP) traffic flow. We propose regression models to estimate QoS, by extrapolating information independently of the user's physical location. In particular our approach allows to estimate the QoS in any location, based on measurements collected at anytime in the past, or anywhere in the network. This will allow to significantly reduce costs of future network deployments, even in complex and heterogeneous scenarios, such as those foreseen in stadiums, events, etc. We identify three feasible regression models, and we compare results in terms of prediction accuracy.
{"title":"Predicting QoS in LTE HetNets based on location-independent UE measurements","authors":"Jessica Moysen, L. Giupponi, N. Baldo, J. Mangues‐Bafalluy","doi":"10.1109/CAMAD.2015.7390493","DOIUrl":"https://doi.org/10.1109/CAMAD.2015.7390493","url":null,"abstract":"This paper aims to find patterns of knowledge from physical layer data coming from Heterogeneous Long Term Evolution (LTE) networks. We discuss how the collected data is employed in such a manner that improves Minimization of Drive Tests (MDT) functionality in LTE networks. In particular we aim to predict Quality of Service (QoS) expressed in terms of throughput of the User Datagram Protocol (UDP) traffic flow. We propose regression models to estimate QoS, by extrapolating information independently of the user's physical location. In particular our approach allows to estimate the QoS in any location, based on measurements collected at anytime in the past, or anywhere in the network. This will allow to significantly reduce costs of future network deployments, even in complex and heterogeneous scenarios, such as those foreseen in stadiums, events, etc. We identify three feasible regression models, and we compare results in terms of prediction accuracy.","PeriodicalId":370856,"journal":{"name":"2015 IEEE 20th International Workshop on Computer Aided Modelling and Design of Communication Links and Networks (CAMAD)","volume":"91 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114134453","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 : 2015-09-01DOI: 10.1109/CAMAD.2015.7390503
Dhaifallah Alwadani, M. Kolberg, J. Buford
Hybrid multicast opportunistically combines Application Layer Multicast and native multicast protocols. This paper presents an evaluation of Opportunistic Native Multicast which uses the AMT multicast tunnelling protocol. We describe our opportunistic multicasting approach that tries to solve the islands phenomenon by building unicast tunnels to connect these islands while attempting to utilise the native multicast capability of the islands. It is expected that this hybrid approach will improve both efficiency and availability of multicast. We compare our approach to the ALM protocol SCRIBE. The comparison here was done using five metrics: Stress, Stretch, intra-island traffic, interisland traffic and Delivery rate. In all of them, our proposed model has shown improved results over ALM. Moreover, we investigated what effect the number of islands that the receivers are distributed into, has on performance.
{"title":"An evaluation of Opportunistic Native Multicast","authors":"Dhaifallah Alwadani, M. Kolberg, J. Buford","doi":"10.1109/CAMAD.2015.7390503","DOIUrl":"https://doi.org/10.1109/CAMAD.2015.7390503","url":null,"abstract":"Hybrid multicast opportunistically combines Application Layer Multicast and native multicast protocols. This paper presents an evaluation of Opportunistic Native Multicast which uses the AMT multicast tunnelling protocol. We describe our opportunistic multicasting approach that tries to solve the islands phenomenon by building unicast tunnels to connect these islands while attempting to utilise the native multicast capability of the islands. It is expected that this hybrid approach will improve both efficiency and availability of multicast. We compare our approach to the ALM protocol SCRIBE. The comparison here was done using five metrics: Stress, Stretch, intra-island traffic, interisland traffic and Delivery rate. In all of them, our proposed model has shown improved results over ALM. Moreover, we investigated what effect the number of islands that the receivers are distributed into, has on performance.","PeriodicalId":370856,"journal":{"name":"2015 IEEE 20th International Workshop on Computer Aided Modelling and Design of Communication Links and Networks (CAMAD)","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115022762","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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