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HAP

Ying-Dar Jason Lin, Tzu-Chieh Tsai, San-Chiao Huang, Mario Gerla
1993 Conference proceedings on Communications architectures, protocols and applications - SIGCOMM '93  
Applications to be supported on broadband networks exhibit a wide range of trafic statistics and many of them are sensitive to de~ay and loss violations.  ...  We can model a computer packet stream as a 3-level HAP while modeling packet streams from some other different en- vironments as 2-level HAPs.  ...  The model captures the fact that a packet arrival process is modulated by its upper-level arrival processes.  ... 
doi:10.1145/166237.166258 dblp:conf/sigcomm/LinTHG93 fatcat:t6kigul6uzespfwaujovbucgpq

HAP

Ying-Dar Jason Lin, Tzu-Chieh Tsai, San-Chiao Huang, Mario Gerla
1993 Computer communication review  
Applications to be supported on broadband networks exhibit a wide range of trafic statistics and many of them are sensitive to de~ay and loss violations.  ...  We can model a computer packet stream as a 3-level HAP while modeling packet streams from some other different en- vironments as 2-level HAPs.  ...  The model captures the fact that a packet arrival process is modulated by its upper-level arrival processes.  ... 
doi:10.1145/167954.166258 fatcat:nbxgelppynfoxgj7fxaqqhicmq

Enhancing Transport Layer Capability in HAPS–Satellite Integrated Architecture

C. E. Palazzi, C. Roseti, M. Luglio, M. Gerla, M. Y. Sanadidi, J. Stepanek
2005 Wireless personal communications  
In particular, we propose the use of a PEP technique, namely splitting, to speed up window growth in spite of high latency, combined with TCP Westwood as a very efficient algorithm particularly suitable  ...  The use of HAPS/UAVs to enhance telecommunication capabilities has been proposed as an effective solution to support hot spot communications in limited areas.  ...  Distributed with source code, NS-2 allows adding new models and functionality for the purpose of investigating different scenarios and new protocols.  ... 
doi:10.1007/s11277-005-0751-2 fatcat:vljyqr7gjrd6diqnavxa4pc5mi

CAC-TCP Cross-Layer Interaction in a HAPS-Satellite Integrated Scenario

M. Luglio, N. Pavlidou, C. Roseti, G. Theodoridis
2007 2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring  
The integration of a satellite system with a HAPS segment appears very suitable to provide communication services, including Internet access, for a large set of applications.  ...  In particular, we propose an innovative TCP driven CAC algorithm, which shall take into account not only the QoS requirements, but also TCP statistics obtained through a proxy installed on the HAPS.  ...  This classification implies the use of a different channel model for each environment.  ... 
doi:10.1109/vetecs.2007.291 dblp:conf/vtc/LuglioPRT07 fatcat:uzhp4uy4yjh7nptcm4u2mq6hr4

Hybrid System HAP-WiFi for Incident Area Network [chapter]

G. Araniti, M. De Sanctis, S. C. Spinella, M. Monti, E. Cianca, A. Molinaro, A. Iera, M. Ruggieri
2010 Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering  
In this work we are interested in investigating how the High Altitude Platform (HAP) can effectively support Multimedia Broadcast/Multicast Service (MBMS) in a scenario wherein the preexistent terrestrial  ...  To this aim, we propose an efficient policy of Radio Resource Management (RRM) based on cooperation framework between HAP and Mobile Ad-Hoc NETwork (MANET).  ...  In this case the new user will become a member of the multicast group/subgroup; while, in case of negative reply, the user requests a DCH channel to the HAP network.  ... 
doi:10.1007/978-3-642-13618-4_33 fatcat:krxp6xm5ubh23gdmyqouclohqi

Channel modelling for free-space optical inter-HAP links using adaptive ARQ transmission

S. Parthasarathy, D. Giggenbach, A. Kirstädter, Edward M. Carapezza, Panos G. Datskos, Christos Tsamis
2014 Unmanned/Unattended Sensors and Sensor Networks X  
In this paper, a bi-directional symmetrical Inter-HAP link has been selected and modeled.  ...  To propose a suitable ARQ scheme, proper theoretical understanding of the optical atmospheric propagation and modeling of a specific scenario FSO channel is required.  ...  The transmitter sends a packet to the receiver and waits until the Acknowledgement packet (ACK) arrives from the receiver.  ... 
doi:10.1117/12.2067195 fatcat:pucr2xxlwvhizmlx3qsvrnuvba

A Vision and Framework for the High Altitude Platform Station (HAPS) Networks of the Future [article]

Gunes Kurt, Mohammad G. Khoshkholgh, Safwan Alfattani, Ahmed Ibrahim, Tasneem S. J. Darwish, Md Sahabul Alam, Halim Yanikomeroglu, Abbas Yongacoglu
2021 arXiv   pre-print
In this article, we provide a vision and framework for the HAPS networks of the future supported by a comprehensive and state-of-the-art literature review.  ...  A High Altitude Platform Station (HAPS) is a network node that operates in the stratosphere at an of altitude around 20 km and is instrumental for providing communication services.  ...  Corresponding research investigations could be related to new communications techniques to compensate for the lack of enough HAPS system channels, the restricted transmission energy, or the detection without  ... 
arXiv:2007.15088v4 fatcat:6wcy7ndiebee3a3zvh7dymv6oq

An Efficient HAPS Cross-Layer Design to Mitigate COVID-19 Consequences

Sameer Alsharif, Rashid A. Saeed, Yasser Albagory
2022 Intelligent Automation and Soft Computing  
This paper proposes a new cross-layer communication system for the provision of Internet services and applications to mitigate the negative impacts of COVID-19, due to which the massive online demands  ...  The system requirements and model are investigated where it utilizes high-altitude platform (HAP) for fast and efficient connectivity provision to bridge the communication infrastructure gap in the current  ...  The smart grid disbursement enhanced the packet loss under the proposed model by altering a control coefficient.  ... 
doi:10.32604/iasc.2022.019493 fatcat:llpu5objd5fezoaktpuwa3eh2q

TCP-Call Admission Control Interaction in Multiplatform Space Architectures

Georgios Theodoridis, Cesare Roseti, Niovi Pavlidou, Michele Luglio
2007 EURASIP Journal on Wireless Communications and Networking  
CAC performance improvement is shown for different space-based architectures, including both satellites and high altitude platform (HAP) systems.  ...  The development of cross-layer techniques can greatly help to improve efficiency and flexibility for wireless networks.  ...  Some studies indicate a two-state (goodbad) Markov model as a suitable error model [13] .  ... 
doi:10.1155/2007/23923 fatcat:ztauudf3a5hwxm6rzcsalgc5he

Performance Evaluation of a Dual Coverage System for Internet of Things Environments

Omar Said, Amr Tolba
2016 Mobile Information Systems  
A dual coverage system for Internet of Things (IoT) environments is introduced. This system is used to connect IoT nodes regardless of their locations.  ...  The results indicated that the HAP/HAP/Things architecture has the best end-to-end delay, packet loss, throughput, energy consumption, and handover.  ...  Acknowledgments The authors are thankful to the Deanship of Scientific Research, King Saud University, Riyadh, Saudi Arabia, for funding this research work.  ... 
doi:10.1155/2016/3464392 fatcat:x4wrtwcof5hfnhqohzjybl2llu

List of acronyms [chapter]

2021 Inclusive Radio Communications for 5G and Beyond  
GSM Global System for Mobile Communications GUI Graphical User Interface GW Gateway GWNSyM Generic Wireless Network System Modeler HAP High Altitude Platform HAPS High Altitude Platform Stations  ...  TF Time-Frequency THz Terahertz TICK Telegraf, InfluxDB, Chronograf, Kapacitor TOA Time Of Arrival TRP Total Radiated Power TRUDI Testing Environment for Vehicular Applications Running with  ... 
doi:10.1016/b978-0-12-820581-5.00018-3 fatcat:md57yivmrrbj5e363zz45cjz64

Survivable Free Space Optical Mesh Network using High-Altitude Platforms [article]

Dieu Linh Truong, Xuan Vuong Dang, The Ngoc Dang
2022 arXiv   pre-print
In this study, we propose an end-to-end switching model for forwarding traffic between massive pairs of ground FSO nodes over a HAP network.  ...  We propose an algorithm for designing the topology of the survivable HAP network, given a set of ground FSO nodes.  ...  Acknowledgements This research was funded by the Vietnam National Foundation for Science and Technology Development (NAFOSTED) under grant number 102.02-2018.305.  ... 
arXiv:2202.07188v1 fatcat:dat5aeyfljdezdua5gqdtmp4py

A Tight Bound on Online Buffer Management for Two-Port Shared-Memory Switches

K. KOBAYASHI, S. MIYAZAKI, Y. OKABE
2008 IEICE transactions on information and systems  
At each send event, we construct new matchings for all unmatched charged packets.  ...  For a policy A and a packet p arriving at an A's queue, if p is sent by A at time t, then we write SA(p)=t.  ... 
doi:10.1093/ietisy/e91-d.8.2105 fatcat:d3tpk7g5wve4rggu2rcnzaivqm

Bluetooth based home automation system

N. Sriskanthan, F. Tan, A. Karande
2002 Microprocessors and microsystems  
A wireless home network that does not incur additional costs of wiring would be desirable. Bluetooth technology, which has emerged in late 1990s, is an ideal solution for this purpose.  ...  Busy families and individuals with physical limitation represent an attractive market for home automation and networking.  ...  as a new device.  ... 
doi:10.1016/s0141-9331(02)00039-x fatcat:6w3rsfx7o5bpdh4e2463plyune

Clustered-Loss Retransmission Protocol over Wireless TCP

Fanglei Sun
2005 Journal of Computer Research and Development  
For example, a hole between consecutive packets, which persists after several packets have arrived, will be regarded as a wireless loss.  ...  When an ACK arrives at MH, according to information attached in the ACK, the list is updated, deleting the records of the packets that have been acknowledged, adding the records for the new lost packets  ... 
doi:10.1360/crad20050213 fatcat:wgcd2jif5zf3pcyus6igsjgh6i
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