Pub Date : 2009-10-13DOI: 10.1109/IWSSC.2009.5286370
G. Fairhurst, G. Giambene, S. Giannetti, C. P. Niebla, A. Sali
Recently there has been a renewed interest on mobile communications via satellite. Therefore, the DVB-S2/-RCS standard has been updated with some countermeasures to combat fading effects of the mobile scenario. The focus of this paper is on multimedia traffic management on the DVB-S2 forward link to collective terminals on trains. In our study, we consider ACM, PHY margins, and LL-FEC coding to counteract the time-varying propagation conditions in Ku-band that are very critical for the railway scenario. A multi-layer optimization study is performed in order to maximize TCP goodput by jointly tuning LL-FEC coding and the PHY layer margin. It is shown how, using appropriate parameters, LL-FEC coding can improve the performance of the system. Moreover, the performance of the proposed UBMT scheduler is evaluated in managing CBR and FTP traffic flows. This study has permitted to determine the maximum capacity of CBR flows (guaranteeing a given quality of service level) in the presence of FTP flows.
{"title":"Cross-layer study for resource management in DVB-S2 with mobile users","authors":"G. Fairhurst, G. Giambene, S. Giannetti, C. P. Niebla, A. Sali","doi":"10.1109/IWSSC.2009.5286370","DOIUrl":"https://doi.org/10.1109/IWSSC.2009.5286370","url":null,"abstract":"Recently there has been a renewed interest on mobile communications via satellite. Therefore, the DVB-S2/-RCS standard has been updated with some countermeasures to combat fading effects of the mobile scenario. The focus of this paper is on multimedia traffic management on the DVB-S2 forward link to collective terminals on trains. In our study, we consider ACM, PHY margins, and LL-FEC coding to counteract the time-varying propagation conditions in Ku-band that are very critical for the railway scenario. A multi-layer optimization study is performed in order to maximize TCP goodput by jointly tuning LL-FEC coding and the PHY layer margin. It is shown how, using appropriate parameters, LL-FEC coding can improve the performance of the system. Moreover, the performance of the proposed UBMT scheduler is evaluated in managing CBR and FTP traffic flows. This study has permitted to determine the maximum capacity of CBR flows (guaranteeing a given quality of service level) in the presence of FTP flows.","PeriodicalId":137431,"journal":{"name":"2009 International Workshop on Satellite and Space Communications","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124062001","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 : 2009-10-13DOI: 10.1109/IWSSC.2009.5286392
Ioannis Komnios, Sotirios Diamantopoulos, V. Tsaoussidis
As the number of space elements increases, routing becomes an issue of great interest. The majority of routing schemes that have been proposed till now, employ a fairly static design and, only recently, more sophisticated protocols have been introduced. In this study, we evaluate some of the most prominent routing protocols for Delay-Tolerant Networks, Epidemic, PRoPHET and Contact Graph Routing, in space environment. Using COMNET Lab's DTN testbed, we show that for increasing delay, Contact Graph Routing significantly outperforms the other two routing schemes.
{"title":"Evaluation of dynamic DTN routing protocols in space environment","authors":"Ioannis Komnios, Sotirios Diamantopoulos, V. Tsaoussidis","doi":"10.1109/IWSSC.2009.5286392","DOIUrl":"https://doi.org/10.1109/IWSSC.2009.5286392","url":null,"abstract":"As the number of space elements increases, routing becomes an issue of great interest. The majority of routing schemes that have been proposed till now, employ a fairly static design and, only recently, more sophisticated protocols have been introduced. In this study, we evaluate some of the most prominent routing protocols for Delay-Tolerant Networks, Epidemic, PRoPHET and Contact Graph Routing, in space environment. Using COMNET Lab's DTN testbed, we show that for increasing delay, Contact Graph Routing significantly outperforms the other two routing schemes.","PeriodicalId":137431,"journal":{"name":"2009 International Workshop on Satellite and Space Communications","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130862517","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 : 2009-10-13DOI: 10.1109/IWSSC.2009.5286311
F. Arnal, C. Baudoin, J. Fasson, B. Paillassa, E. Chaput, F. Goas, S. Ducloux, P. Gelard, E. Dubois
The emerging IP Multimedia Subsystem (IMS) framework appears as a candidate solution to achieve generalized network and service convergence. Thus, the question of how to integrate satellite systems into IMS, based on a standard solution like DVB-RCS fully makes sense. In this paper, the main requirements to support IMS in DVB-RCS networks are identified, and optimizations for this integration are discussed. Experimental results emulating our network architecture proposals are also reported.
{"title":"On DVB satellite network integration in IMS","authors":"F. Arnal, C. Baudoin, J. Fasson, B. Paillassa, E. Chaput, F. Goas, S. Ducloux, P. Gelard, E. Dubois","doi":"10.1109/IWSSC.2009.5286311","DOIUrl":"https://doi.org/10.1109/IWSSC.2009.5286311","url":null,"abstract":"The emerging IP Multimedia Subsystem (IMS) framework appears as a candidate solution to achieve generalized network and service convergence. Thus, the question of how to integrate satellite systems into IMS, based on a standard solution like DVB-RCS fully makes sense. In this paper, the main requirements to support IMS in DVB-RCS networks are identified, and optimizations for this integration are discussed. Experimental results emulating our network architecture proposals are also reported.","PeriodicalId":137431,"journal":{"name":"2009 International Workshop on Satellite and Space Communications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131154450","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 : 2009-10-13DOI: 10.1109/IWSSC.2009.5286413
E. T. Michailidis, A. Kanatas
This paper proposes a design approach to construct a high rank multiple-input multiple-output (MIMO) channel matrix in line-of-sight (LoS) propagation environment, when high altitude platforms (HAPs) are involved. This approach enhances the performance of systems, which can not utilize the MIMO gain introduced by independent and identically distributed (i.i.d.) Rayleigh fading channels or require the existence of a strong LoS signal. Geometrical design recommendations are introduced, considering Ka and V frequency bands licensed for broadband communications through HAPs. In these high frequency bands, the rain has a significant effect on the quality of the link and applications, such as Fixed Wireless Access (FWA), are feasible. The results show the potential capacity gain of the optimized LoS-HAP-MIMO architecture, under clear sky and rain conditions.
{"title":"Capacity optimized line-of-sight HAP-MIMO channels for Fixed Wireless Access","authors":"E. T. Michailidis, A. Kanatas","doi":"10.1109/IWSSC.2009.5286413","DOIUrl":"https://doi.org/10.1109/IWSSC.2009.5286413","url":null,"abstract":"This paper proposes a design approach to construct a high rank multiple-input multiple-output (MIMO) channel matrix in line-of-sight (LoS) propagation environment, when high altitude platforms (HAPs) are involved. This approach enhances the performance of systems, which can not utilize the MIMO gain introduced by independent and identically distributed (i.i.d.) Rayleigh fading channels or require the existence of a strong LoS signal. Geometrical design recommendations are introduced, considering Ka and V frequency bands licensed for broadband communications through HAPs. In these high frequency bands, the rain has a significant effect on the quality of the link and applications, such as Fixed Wireless Access (FWA), are feasible. The results show the potential capacity gain of the optimized LoS-HAP-MIMO architecture, under clear sky and rain conditions.","PeriodicalId":137431,"journal":{"name":"2009 International Workshop on Satellite and Space Communications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127356984","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 : 2009-10-13DOI: 10.1109/IWSSC.2009.5286308
B. Vojcic, D. Matheson, H. Clark
This paper describes a complex hybrid terrestrial-satellite mobile network which includes both Satellite Based Network (SBN) and Ancillary Terrestrial Component (ATC) components that are integrated via a single logical standards-based core network based on 3GPP and 3GPP2 network entities. Next generation session controls are implemented across its all-IP core and transport network via an IMS Core utilizing SIP signaling. Two satellite air-interfaces, GMR1-3G and satellite HRPD (sHRPD), operating over a GEO satellite are described and their main and advanced features and performance are reviewed.
{"title":"Network of mobile networks; Hybrid terrestrial-satellite radio","authors":"B. Vojcic, D. Matheson, H. Clark","doi":"10.1109/IWSSC.2009.5286308","DOIUrl":"https://doi.org/10.1109/IWSSC.2009.5286308","url":null,"abstract":"This paper describes a complex hybrid terrestrial-satellite mobile network which includes both Satellite Based Network (SBN) and Ancillary Terrestrial Component (ATC) components that are integrated via a single logical standards-based core network based on 3GPP and 3GPP2 network entities. Next generation session controls are implemented across its all-IP core and transport network via an IMS Core utilizing SIP signaling. Two satellite air-interfaces, GMR1-3G and satellite HRPD (sHRPD), operating over a GEO satellite are described and their main and advanced features and performance are reviewed.","PeriodicalId":137431,"journal":{"name":"2009 International Workshop on Satellite and Space Communications","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122829746","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 : 2009-10-13DOI: 10.1109/IWSSC.2009.5286428
E. Fazli, Angels Via, M. Werner
This paper presents the development of a laboratory demonstrator within NEWSKY, a project co-funded by the European Commission within its 6th Research Framework Programme (FP6). The test-bed is used to demonstrate the feasibility of host and network mobility, using Mobile IPv6 (MIPv6) and Network Mobility (NEMO) protocol stack for future Air Traffic Management (ATM) networks. Representative results as an outcome of extensive network performance measurements using real satellite and emulated terrestrial links are presented at the end of the paper.
{"title":"Laboratory test-bed development for IPv6 network mobility demonstration in aeronautical communications network","authors":"E. Fazli, Angels Via, M. Werner","doi":"10.1109/IWSSC.2009.5286428","DOIUrl":"https://doi.org/10.1109/IWSSC.2009.5286428","url":null,"abstract":"This paper presents the development of a laboratory demonstrator within NEWSKY, a project co-funded by the European Commission within its 6th Research Framework Programme (FP6). The test-bed is used to demonstrate the feasibility of host and network mobility, using Mobile IPv6 (MIPv6) and Network Mobility (NEMO) protocol stack for future Air Traffic Management (ATM) networks. Representative results as an outcome of extensive network performance measurements using real satellite and emulated terrestrial links are presented at the end of the paper.","PeriodicalId":137431,"journal":{"name":"2009 International Workshop on Satellite and Space Communications","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123991103","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 : 2009-10-13DOI: 10.1109/IWSSC.2009.5286404
P. Pillai, Yim-Fun Hu
IP multicast can be used for one-to-many or many-to-many communications providing efficient resource consumption. When providing IP services to passengers on a plane via a satellite, IP multicasting techniques can be very useful in saving resources over the satellite. A novel framework (MSECAAA) presented in [1], combines the IETF multicast security architecture with efficient AAA techniques enabling the network provider to directly control access to multicast sessions and account the usage of the multicast services. This paper first describes in detail the network architecture and the system design for providing multicast services to aeronautical passengers and then describes how the MSEC-AAA may be extended and used to provide efficient IP multicast services to aeronautical passengers. The paper also describes the post-paid and pre-paid accounting mechanism that may be used by the Aircraft Network Provider to account the multicast usage.
{"title":"AAA framework for aeronautical passenger multicast communication","authors":"P. Pillai, Yim-Fun Hu","doi":"10.1109/IWSSC.2009.5286404","DOIUrl":"https://doi.org/10.1109/IWSSC.2009.5286404","url":null,"abstract":"IP multicast can be used for one-to-many or many-to-many communications providing efficient resource consumption. When providing IP services to passengers on a plane via a satellite, IP multicasting techniques can be very useful in saving resources over the satellite. A novel framework (MSECAAA) presented in [1], combines the IETF multicast security architecture with efficient AAA techniques enabling the network provider to directly control access to multicast sessions and account the usage of the multicast services. This paper first describes in detail the network architecture and the system design for providing multicast services to aeronautical passengers and then describes how the MSEC-AAA may be extended and used to provide efficient IP multicast services to aeronautical passengers. The paper also describes the post-paid and pre-paid accounting mechanism that may be used by the Aircraft Network Provider to account the multicast usage.","PeriodicalId":137431,"journal":{"name":"2009 International Workshop on Satellite and Space Communications","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129155059","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 : 2009-10-13DOI: 10.1109/IWSSC.2009.5286409
A. Vanelli-Coralli, G. Corazza, M. Luglio, S. Cioni
The ISICOM concept has been defined in the framework of the ISI Technology Platform as a mean to provide the necessary communication infrastructure in support to the achievement of the European Space Policy goals. In this paper, we introduce the ISICOM Architecture: starting from the ISICOM devised missions, we describe the founding architecture concepts that shall be taken into consideration in the design of the ISICOM architecture in order to meet the challenging requirements set forth by the ISICOM missions.
{"title":"The ISICOM Architecture","authors":"A. Vanelli-Coralli, G. Corazza, M. Luglio, S. Cioni","doi":"10.1109/IWSSC.2009.5286409","DOIUrl":"https://doi.org/10.1109/IWSSC.2009.5286409","url":null,"abstract":"The ISICOM concept has been defined in the framework of the ISI Technology Platform as a mean to provide the necessary communication infrastructure in support to the achievement of the European Space Policy goals. In this paper, we introduce the ISICOM Architecture: starting from the ISICOM devised missions, we describe the founding architecture concepts that shall be taken into consideration in the design of the ISICOM architecture in order to meet the challenging requirements set forth by the ISICOM missions.","PeriodicalId":137431,"journal":{"name":"2009 International Workshop on Satellite and Space Communications","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116098271","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 : 2009-10-13DOI: 10.1109/IWSSC.2009.5286416
R. Garello, Noureddine Boujnah, Yifan Jia
In this paper, we present a new iterative algorithm for designing binary sequences with good properties in terms of aperiodic autocorrelation function. The algorithm has a low complexity, growing linearly with the sequence length, and allows improvements with respect to best known sequences, especially for large lengths. First, we show its application to the design of long markers for frame synchronization. In particular, new markers with length 128 and 192 bits are generated and evaluated, showing consistent improvements with respect to current markers used by CCSDS Recommendation for turbo code synchronization at very low SNR. Then, the proposed technique is applied to the design of binary arrays with small values of peak side lobes, as required by various communication and signal processing applications, including radar.
{"title":"Design of binary sequences and matrices for space applications","authors":"R. Garello, Noureddine Boujnah, Yifan Jia","doi":"10.1109/IWSSC.2009.5286416","DOIUrl":"https://doi.org/10.1109/IWSSC.2009.5286416","url":null,"abstract":"In this paper, we present a new iterative algorithm for designing binary sequences with good properties in terms of aperiodic autocorrelation function. The algorithm has a low complexity, growing linearly with the sequence length, and allows improvements with respect to best known sequences, especially for large lengths. First, we show its application to the design of long markers for frame synchronization. In particular, new markers with length 128 and 192 bits are generated and evaluated, showing consistent improvements with respect to current markers used by CCSDS Recommendation for turbo code synchronization at very low SNR. Then, the proposed technique is applied to the design of binary arrays with small values of peak side lobes, as required by various communication and signal processing applications, including radar.","PeriodicalId":137431,"journal":{"name":"2009 International Workshop on Satellite and Space Communications","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116318789","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 : 2009-10-13DOI: 10.1109/IWSSC.2009.5286387
C. Capsoni, M. d'Amico, R. Nebuloni
Site and time diversity are countermeasures used in satellite links to mitigate outage due to rain attenuation; in this paper these techniques will be compared through radar simulation, and the close mutual relationship highlighted.
{"title":"Time and site diversity gain: A close relationship","authors":"C. Capsoni, M. d'Amico, R. Nebuloni","doi":"10.1109/IWSSC.2009.5286387","DOIUrl":"https://doi.org/10.1109/IWSSC.2009.5286387","url":null,"abstract":"Site and time diversity are countermeasures used in satellite links to mitigate outage due to rain attenuation; in this paper these techniques will be compared through radar simulation, and the close mutual relationship highlighted.","PeriodicalId":137431,"journal":{"name":"2009 International Workshop on Satellite and Space Communications","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115791805","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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