Pub Date : 2009-10-13DOI: 10.1109/IWSSC.2009.5286379
J. Cuevas-Ruíz, A. Aragón-Zavala, G. A. Medina-Acosta, J. A. Delgado-Penín
A geometric model that describes a multipath propagation for a fixed wireless communication system between a High Altitude Platform and a fixed terrestrial user is presented. The model describes the propagation of the reflected signals that are able to reach the receiver as a consequence of all the scatterers located inside the system coverage area. The establishment of a particular geometry characterizing the system coverage area allows the behavior of the multipath phenomenon effects to be modeled accurately.
{"title":"Multipath propagation model for High Altitude Platform (HAP) based on circular straight cone geometry","authors":"J. Cuevas-Ruíz, A. Aragón-Zavala, G. A. Medina-Acosta, J. A. Delgado-Penín","doi":"10.1109/IWSSC.2009.5286379","DOIUrl":"https://doi.org/10.1109/IWSSC.2009.5286379","url":null,"abstract":"A geometric model that describes a multipath propagation for a fixed wireless communication system between a High Altitude Platform and a fixed terrestrial user is presented. The model describes the propagation of the reflected signals that are able to reach the receiver as a consequence of all the scatterers located inside the system coverage area. The establishment of a particular geometry characterizing the system coverage area allows the behavior of the multipath phenomenon effects to be modeled accurately.","PeriodicalId":137431,"journal":{"name":"2009 International Workshop on Satellite and Space Communications","volume":"42 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":"124912143","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.2009.5286325
H. Cruickshank
{"title":"Regular session 6 (room 4) applications and services","authors":"H. Cruickshank","doi":"10.1109/IWSSC.2009.5286325","DOIUrl":"https://doi.org/10.1109/IWSSC.2009.5286325","url":null,"abstract":"","PeriodicalId":137431,"journal":{"name":"2009 International Workshop on Satellite and Space Communications","volume":"65 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":"115946416","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.2009.5286331
C. Caini
{"title":"PhD session 4 (room E) transport and quality of service II","authors":"C. Caini","doi":"10.1109/IWSSC.2009.5286331","DOIUrl":"https://doi.org/10.1109/IWSSC.2009.5286331","url":null,"abstract":"","PeriodicalId":137431,"journal":{"name":"2009 International Workshop on Satellite and Space Communications","volume":"13 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":"126544299","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.2009.5286402
N. Ewald, C. Kulatunga, G. Fairhurst
Explicit Congestion Notification (ECN) is a mechanism that can be used to provide early indication of impending Internet congestion, and as such can be used to reduce the latency and improve the throughput of applications using the Internet. This paper examines the impact of using ECN with Quality of Service classification for Internet paths that include a satellite delay. Specifically, it provides a practical analysis of the impact when multimedia applications using the User Datagram Protocol are transmitted over a network path for which ECN is enabled. Since ECN impacts the end-to-end performance, the paper discusses the effect of a larger path delay, as found in a satellite environment. The method is shown to offer benefit to a satellite operator and the network user.
{"title":"Performance impact of ECN on multimedia traffic with satellite delay","authors":"N. Ewald, C. Kulatunga, G. Fairhurst","doi":"10.1109/IWSSC.2009.5286402","DOIUrl":"https://doi.org/10.1109/IWSSC.2009.5286402","url":null,"abstract":"Explicit Congestion Notification (ECN) is a mechanism that can be used to provide early indication of impending Internet congestion, and as such can be used to reduce the latency and improve the throughput of applications using the Internet. This paper examines the impact of using ECN with Quality of Service classification for Internet paths that include a satellite delay. Specifically, it provides a practical analysis of the impact when multimedia applications using the User Datagram Protocol are transmitted over a network path for which ECN is enabled. Since ECN impacts the end-to-end performance, the paper discusses the effect of a larger path delay, as found in a satellite environment. The method is shown to offer benefit to a satellite operator and the network user.","PeriodicalId":137431,"journal":{"name":"2009 International Workshop on Satellite and Space Communications","volume":"39 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":"127265241","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.2009.5286356
C. Jentsch, A. Rathke, O. Wallner
We review the key features of future interplanetary missions with the goal of identifying trends and requirements for the communication and navigation systems. A set of 13 characteristic mission scenarios is derived from the worldwide publicly available information on 73 currently planned or even initiated science missions. Missions from all major space agencies to a variety of targets such as Moon, Planets, small bodies or Lagrange points, have been considered. The key features of these missions are the basis for deriving the major drivers of the communication and navigation systems which, in turn, can support the planning of future technology-development activities.
{"title":"Interplanetary communication: A review of future missions","authors":"C. Jentsch, A. Rathke, O. Wallner","doi":"10.1109/IWSSC.2009.5286356","DOIUrl":"https://doi.org/10.1109/IWSSC.2009.5286356","url":null,"abstract":"We review the key features of future interplanetary missions with the goal of identifying trends and requirements for the communication and navigation systems. A set of 13 characteristic mission scenarios is derived from the worldwide publicly available information on 73 currently planned or even initiated science missions. Missions from all major space agencies to a variety of targets such as Moon, Planets, small bodies or Lagrange points, have been considered. The key features of these missions are the basis for deriving the major drivers of the communication and navigation systems which, in turn, can support the planning of future technology-development activities.","PeriodicalId":137431,"journal":{"name":"2009 International Workshop on Satellite and Space Communications","volume":"444 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":"132700789","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.2009.5286349
S. Vassaki, A. Panagopoulos, P. Constantinou
In the present paper we study the problem of bandwidth allocation in DVB-RCS networks. DVB-RCS networks operate at Ku band and above. At these frequencies, rain attenuation is the dominant fading mechanism and exhibits significant spatial-temporal variation among the users. Firstly, the resource allocation is modeled as a non cooperative game and we find the Nash equilibrium employing the Nikaido-Isoda function and a relaxation algorithm. Moreover, we force the game to converge to a more fair equilibrium point, by introducing a pricing scheme. The bandwidth allocation to users that are affected more by rain fading is improved. Finally, we apply the principles of a cooperative game to describe the problem of resource allocation and we compare the results of the three approaches. Some useful conclusions are drawn.
{"title":"Game-theoretic approach of fair bandwidth allocation in DVB-RCS networks","authors":"S. Vassaki, A. Panagopoulos, P. Constantinou","doi":"10.1109/IWSSC.2009.5286349","DOIUrl":"https://doi.org/10.1109/IWSSC.2009.5286349","url":null,"abstract":"In the present paper we study the problem of bandwidth allocation in DVB-RCS networks. DVB-RCS networks operate at Ku band and above. At these frequencies, rain attenuation is the dominant fading mechanism and exhibits significant spatial-temporal variation among the users. Firstly, the resource allocation is modeled as a non cooperative game and we find the Nash equilibrium employing the Nikaido-Isoda function and a relaxation algorithm. Moreover, we force the game to converge to a more fair equilibrium point, by introducing a pricing scheme. The bandwidth allocation to users that are affected more by rain fading is improved. Finally, we apply the principles of a cooperative game to describe the problem of resource allocation and we compare the results of the three approaches. Some useful conclusions are drawn.","PeriodicalId":137431,"journal":{"name":"2009 International Workshop on Satellite and Space Communications","volume":"41 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":"133205942","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.2009.5286431
R. Mort, H. Cruickshank
{"title":"Special session 1 (room 18) broadband satellite multimedia","authors":"R. Mort, H. Cruickshank","doi":"10.1109/IWSSC.2009.5286431","DOIUrl":"https://doi.org/10.1109/IWSSC.2009.5286431","url":null,"abstract":"","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":"124329437","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.2009.5286403
G. Oligeri, S. Chessa, P. Barsocchi, G. Giunta, P. Chan, P. Pillai
A new real time loss tolerant video streaming authentication scheme is presented. The bandwidth overhead is negligible, and authentication information are transmitted from the sender to all the receivers by means of a watermarking technique. Real time constraints are achieved by using a features computation algorithm, the sender embeds in each block of pictures the features computed over the current block, and a message authentication code that authenticates them. The receiver computes the features over the received block and compares it with that ones authenticated and extracted from the current block.
{"title":"Real-time loss tolerant video streaming authentication for satellite links","authors":"G. Oligeri, S. Chessa, P. Barsocchi, G. Giunta, P. Chan, P. Pillai","doi":"10.1109/IWSSC.2009.5286403","DOIUrl":"https://doi.org/10.1109/IWSSC.2009.5286403","url":null,"abstract":"A new real time loss tolerant video streaming authentication scheme is presented. The bandwidth overhead is negligible, and authentication information are transmitted from the sender to all the receivers by means of a watermarking technique. Real time constraints are achieved by using a features computation algorithm, the sender embeds in each block of pictures the features computed over the current block, and a message authentication code that authenticates them. The receiver computes the features over the received block and compares it with that ones authenticated and extracted from the current block.","PeriodicalId":137431,"journal":{"name":"2009 International Workshop on Satellite and Space Communications","volume":"210 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":"122629184","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.2009.5286372
B. Collini-Nocker
{"title":"PhD session 3 (room E) networking II","authors":"B. Collini-Nocker","doi":"10.1109/IWSSC.2009.5286372","DOIUrl":"https://doi.org/10.1109/IWSSC.2009.5286372","url":null,"abstract":"","PeriodicalId":137431,"journal":{"name":"2009 International Workshop on Satellite and Space Communications","volume":"43 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":"128773703","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.2009.5286440
R. Hermenier, C. Kissling, A. Donner
Within this paper we examine a non-geostationary satellite constellation network with inter-satellite links (ISLs) for global air traffic control (ATC) and air passenger communication (APC). More specifically, an analysis is done to investigate the impacts of different routing policies on the end-to-end delay, and a general model describing the delays is developed. All considerations are based on a Galileo-like satellite constellation network and real global flight data of all commercial flights during one day
{"title":"A delay model for satellite constellation networks with inter-satellite links","authors":"R. Hermenier, C. Kissling, A. Donner","doi":"10.1109/IWSSC.2009.5286440","DOIUrl":"https://doi.org/10.1109/IWSSC.2009.5286440","url":null,"abstract":"Within this paper we examine a non-geostationary satellite constellation network with inter-satellite links (ISLs) for global air traffic control (ATC) and air passenger communication (APC). More specifically, an analysis is done to investigate the impacts of different routing policies on the end-to-end delay, and a general model describing the delays is developed. All considerations are based on a Galileo-like satellite constellation network and real global flight data of all commercial flights during one day","PeriodicalId":137431,"journal":{"name":"2009 International Workshop on Satellite and Space Communications","volume":"68 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":"125032291","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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