| A Retransmission Strategy for Real-Time Streaming over Satellite in Blockage with Long Memory |
12 Apr 2011 |
9 pages |
| Authors:
Huan Yao; Yuval Kochman; Gregor W Wornell; MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB
|
 | The channel for 8 Comm-on-the-move (COTM) terminal in a blockage environment communicating over a satellite can be characterized as a packet erasure channel with long channel memory and long feedback delay. The goal of our research is to enable real-time application, such as a two-way voice call, over such a challenging channel. These packets need to be delivered reliably with strict order requirement. While various ARQ techniques are often used ... |
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| A Markov Model for the EpiChord Peer-to-Peer Overlay in an XCAST Enabled Network |
Jan-2007 |
9 pages |
| Authors:
Mario Kolberg; Florence Kolberg; Alan Brown; John Buford; STIRLING UNIV (UNITED KINGDOM)
|
| Structured Peer to Peer (P2P) overlay networks are becoming increasingly popular. Multi-hop systems achieve a successful lookup in O(log N) hops, whereas one-hop systems approach O(1) hops. Both approaches, but especially one-hop overlays suffer from a high number of identical messages being sent to a number of nodes on the overlay. Previous work showed that P2P networks benefit from the integration of the overlay network with the underlay network in ... |
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| End-to-End Concurrent Multipath Transfer Using Transport Layer Multihoming |
Jul-2006 |
124 pages |
| Authors:
Janardhan R Iyengar; DELAWARE UNIV NEWARK DEPT OF COMPUTER AND INFORMATION SCIENCES
|
| Transport layer multihoming binds a single transport layer association to multiple network addresses at each endpoint, thus allowing the two end hosts to communicate over multiple network paths. This dissertation investigates end-to-end Concurrent Multipath Transfer (CMT) using transport layer multihoming for increased application throughput. CMT is the simultaneous transfer of new data from a source host to a destination host via two or more end-to-end paths. We investigate and evaluate ... |
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| Mitigating TCP Degradation over Intermittent Link Failures using Intermediate Buffers |
JUN 2006 |
107 pages |
| Authors:
M. B. Reynolds; AIR FORCE INST OF TECHNOLOGY WRIGHT-PATTERSON AFB OH GRADUATE SCHOOL OF ENGINEERING AND MANAGEMENT
|
| This thesis addresses the improvement of data transmission performance in a challenged network. It is well known that the popular Transmission Control Protocol degrades in environments where one or more of the links along the route is intermittently available. To avoid this degradation, this thesis proposes placing at least one node along the path of transmission to buffer and retransmit as needed to overcome the intermittent link. In the four-node, ... |
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| Custodial Multicast in Delay Tolerant Networks: Challenges and Approaches |
2006 |
6 pages |
| Authors:
Susan Symington; Robert C. Durst; Keith Scott; MITRE CORP MCLEAN VA
|
| Although custodial transmission of multicast bundles would be a desirable capability to have in Delay-Tolerant Networks (DTNs), support for custodial multicast transmission was omitted from the Bundle Protocol Specification because of its complexity. This paper explains the difficulties that arise with respect to supporting custody transfer and retransmission of multicast bundles, and it describes some potential solutions for addressing these issues that the authors are currently exploring as work-in-progress. |
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| The Impact of Contention Resolution verses a priori Channel Allocation on Latency in a Delay Constrained Network |
01-Mar-2005 |
14 pages |
| Authors:
John Gibson; Geoffrey G Xie; Jose Coelho; Leopoldo Diaz-Gonzalez; NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF COMPUTER SCIENCE
|
| The predominant mechanism used to control access to the underwater acoustic channel is a contention-based collision-avoidance scheme to reserve the shared media, on-demand, before sending data to avoid retransmission costs incurred with collisions. This paper reports analysis of such a mechanism for a simple linear, or backbone, type topology as compared to the use of an a priori allocation of capacity to each host, thereby eliminating the need for such ... |
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| End-to-End Fault Tolerance Using Transport Layer Multihoming |
Jan-2005 |
135 pages |
| Authors:
Caro; Armando L Jr; DELAWARE UNIV NEWARK DEPT OF COMPUTER AND INFORMATION SCIENCES
|
| This dissertation investigates the use of transport layer multihoming for providing end-to-end network fault tolerance and improved application performance. Transport layer multihoming is a feature that binds a single transport layer association to multiple network addresses at each endpoint, thus allowing the two end hosts to communicate over multiple network paths. Such path redundancy is useful for fault tolerance in that traffic of existing connections can be redirected (i.e., failover) ... |
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| Link-Layer and Network-Layer Performance of an Undersea Acoustic Network at Fleet Battle Experiment-India |
JUN 2003 |
53 pages |
| Authors:
Grant I. Hartfield; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| This thesis is an analysis of the link-layer and network-layer performance of an experimental Seaweb undersea acoustic network. The objective is to statistically determine RTS/CTS handshaking and ARQ retransmission performance during the Fleet Battle Experiment-India, executed in June 2001. Many factors constrain or impair undersea acoustic communications. Analysis of a sample portion of the data reveals insights about the overall throughput, latency, and reliability of the Seaweb network. Seaweb is ... |
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| Performance of Group Communication Over Ad-Hoc Networks |
2002 |
9 pages |
| Authors:
Marc Mosko; J. J. Garcia-Luna-Aceves; CALIFORNIA UNIV SANTA CRUZ DEPT OF COMPUTER ENGINEERING
|
| We study the performance of reliable and unreliable all node broadcast over ad-hoc networks that use contention-based channel access. To obtain analytical results while preserving hidden-terminal and node clustering characteristics of ah-hoc networks, we introduce a novel differential-equation fluid model for information flow through a network of cluster trees, where a spanning tree joins groups of fully connected nodes. Through numerical analysis and simulations in GloMoSim, we show throughput, goodput, ... |
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| The Simulation, Modeling and Analysis of Wireless Local Area Networks Supporting the IEEE 802.11 Standard |
DEC 1998 |
101 pages |
| Authors:
Jaikwan Joo; AIR FORCE INST OF TECH WRIGHT-PATTERSONAFB OH SCHOOL OF ENGINEERING
|
| Research to improve the performance of the IEEE 802.11 has been ongoing since 1990. The focus of this research has investigated the use of the MAC and Physical layers for improving throughput. An adaptive MAC protocol, CATER (Code Adapts To Enhance Reliability) is based on the proposed MAC standard for wireless local area networks (WLAN)-802. 11. IEEE 802.11 uses a fixed Pseudo-Noise (PN) code for spreading the information signal, implying ... |
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| An Adaptive Hybrid FEC/ARQ Protocol Using Turbo Codes for Multi-Media Transmission of ATM over Wireless Networks |
1997 |
7 pages |
| Authors:
Wai-Chung Chan; Evaggelos Geraniotis; MARYLAND UNIV COLLEGE PARK INST FOR SYSTEMS RESEARCH
|
| This paper describes a type-II adaptive hybrid FEC/ARQ protocol using turbo codes for both voice and data services. Recently, a powerful family of error correcting codes using parallel concatenated convolutional codes is introduced. Near-Shannon-limit is achievable by such codes. For example, a bit error rate of 10(exp -5) can be achieved at E(sub 0)/N(sub 0) = 0.7 dB using a rate 1/2 code or at about 2.5 dB if fewer ... |
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| Design Principle of Memory Retransmission in Aircraft Reentry Measurements |
02 OCT 96 |
16 pages |
| Authors:
Renshou Wang; NATIONAL AIR INTELLIGENCE CENTER WRIGHT-PATTERSON AFB OH
|
| This paper presents an analysis of some key problems in designing a radio telemetry memory retransmission system applied to aircraft reentry measurement, including the relationship between memory time and blackout time, the relationship between retransmission period and recovery time, determination of memory retransmission ratio and memory retransmission modes. It also touches upon the design principle, experience, computation method and test results of these technical problems. ANNOTATION: Design Principle of Memory ... |
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| Proof of Correctness of Proposed ATM Retransmission Scheme |
AUG 1993 |
20 pages |
| Authors:
Jane M. Simmons; Robert G. Gallager; MASSACHUSETTS INST OF TECH CAMBRIDGE LAB FOR INFORMATION AND DECISION SYSTEMS
|
| The CCITT has proposed a poll-based retransmission scheme as part of the Service Specific Connection Oriented Protocol for ATM systems. The basic scheme consists of the source periodically sending polls to the destination indicating which frames have been sent, and the destination responding with a status message indicating which of these frames have not been received. Many additional features have been included in the scheme in order to reduce the ... |
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| Performance Analysis of Poll-Based Retransmission Schemes |
AUG 1993 |
25 pages |
| Authors:
Jane M. Simmons; MASSACHUSETTS INST OF TECH CAMBRIDGE LAB FOR INFORMATION AND DECISION SYSTEMS
|
| Many connections require that the source retransmit any data message not correctly delivered to the destination. This paper focuses on schemes that rely on a polling mechanism to trigger the retransmissions. A delay criterion is presented that can be used to gain insight into the performance of general retransmission schemes; this criterion is then used to evaluate poll-based schemes. It is shown that the biggest drawback of poll-based schemes is ... |
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| Multi-Access Strategies for Voice/Data Integration in Heterogeneous Mixed-Media Packet Radio Networks |
08 SEP 92 |
55 pages |
| Authors:
Evaggelos Geraniotis; Mohsen Soroushnejad; NAVAL RESEARCH LAB WASHINGTON DC
|
| The problem of voice/data integration in a mixed-media packet radio network employing both ground radio links and SATCOM radio links is investigated. Multi-access strategies are devised to take advantage of different characteristics of both radio channels to better serve the requirements of both traffic types. Code-division multiple-access with movable boundary in the code domain is used in the ground subnetwork to serve the voice traffic and the retransmitted data traffic ... |
|
| Spread Spectrum Random Access Schemes |
17 DEC 90 |
106 pages |
| Authors:
A. R. Sastry; L. P. Clare; J. E. Baker; ROCKWELL INTERNATIONAL THOUSAND OAKS CA SCIENCE CENTER
|
| Detailed investigations have been carried out on frequency-hopped spread spectrum random access (SSRA) schemes in the presence of jamming, including control procedures for stable operation. Simulations also were carried out to verify and supplement the analytical results. It is shown that, unlike unspread systems, performance of a frequency-hopped packet communication network does not depend heavily on the burstiness of the user traffic or on whether slotted operation is used. Partial ... |
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| A Ring Model for Local/Mobile Radio Communications with Variable Packet Length |
DEC 90 |
56 pages |
| Authors:
Dennis V. Banh; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| This thesis presents an analysis of the performance of a local/mobile radio communications system utilizing the Aloha random access protocol with variable length packets. The capture phenomenon due to the near/far effect that enhances the performance of the system is investigated. A tagged packet will capture the base station if its signal-to-interference ratio exceeds a threshold gamma sub zero. Because of the near/far effect, users near the base station typically ... |
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| Performance Evaluation of Multi-Access Strategies for an Integrated Voice/Data CDMA Packet Radio Network |
09 NOV 90 |
47 pages |
| Authors:
Evaggelos Geraniotis; Mohsen Soroushnejad; NAVAL RESEARCH LAB WASHINGTON DC
|
| The problem of voice/data integration in a random-access radio network employing the ALOHA protocol in conjunction with retransmission control is investigated. Channel-access control strategies are introduced that take advantage of the capability of the code-division multiple-access (CDMA) channel to accommodate several voice calls simultaneously, while the data users contend for the remaining (if any) multiple-access capability of that channel. The retransmission probabilities of the backlogged data users are updated based ... |
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| Analysis of a Data Communication Network's Performance under Varying Retransmission Disciplines |
SEP 90 |
136 pages |
| Authors:
John R. Kirwan Jr; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| A stochastic simulation model is developed, using the SLAM II simulation language, to study the dynamics and performance of a small data communication network. The simulation program models pertinent aspects of Defense Data Network (DDN) protocols. The effect of changes in node-to-node and host-to-host retransmission timeout intervals upon expected response time is studied using the model. |
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| Defense Data Network (DDN) Performance Analysis Using Probability Modeling |
JUL 90 |
67 pages |
| Authors:
Donald P. Gaver; Patricia A. Jacobs; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| The Data Defense Network (DDN) is a large packet switching network that services elements of the U.S. Department of Defense (DOD). The emphasis of this report is to perform probabilistic analysis of certain features of the DDN system with a view of enhancing or 'optimizing' measures of service such as data base throughput and the waiting times experienced by data-base-transfer customers. The particular questions addressed, and the models constructed, are ... |
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| Asymptotic Performance Analysis of Hybrid ARQ Protocols in Slotted Direct-Sequence Code-Division Multiple-Access Networks |
16 MAR 90 |
46 pages |
| Authors:
Joseph M. Hanratty; ARMY INST FOR RESEARCH IN MANAGEMENT INFORMATION AND COMPUTER SCIENCES ATLANTA GA
|
| This paper examines the steady-state and dynamic performance of Type 1 Hybrid ARQ protocols in slotted direct sequence code division multiple access networks. The network consists of an arbitrary number of transceivers arranged in a paired off topology. A Markov model is used to derive the throughput delay expressions in terms of the channel cutoff rate and capacity. Network design parameters are identified and their dependency on system parameters is ... |
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| Performance Analysis of Hybrid ARQ Protocols in a Slotted Direct- Sequence Code-Division Multiple-Access Network: Jamming Analysis |
18 NOV 89 |
62 pages |
| Authors:
Joseph M. Hanratty; ARMY INST FOR RESEARCH IN MANAGEMENT INFORMATION AND COMPUTER SCIENCES ATLANTA GA
|
| This paper examines the performance of Type 1 Hybrid ARQ protocols in a slotted direct-sequence code-division multiple-access network operating in a hostile jamming environment. The network consists of an arbitrary number of transceivers arranged in a paired-off topology. The traffic arrival process is derived by means of a Markov model. Through-put delay expressions are derived in terms of the channel cutoff rate and capacity. The effects of jammer state information ... |
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| Performance Analysis of Hybrid ARQ Protocols in a Slotted Code Division Multiple-Access Network |
AUG 89 |
155 pages |
| Authors:
Joseph M. Hanratty; GEORGIA INST OF TECH ATLANTA
|
| A link throughput-delay analysis is presented for a slotted direct- sequence spread-spectrum multiple-access packet radio network (PRN) operating in the presence of background noise, multiple-access interference, and pulsed jammer noise. The PRN is comprised of an arbitrary number of full-duplex radio units arranged in a paired-off topology. Slotted ALOHA random access is used in conjunction with CDMA for channel access and a type I hybrid ARQ is used for error ... |
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| An Autonomous Ocean Instrument Platform Driven Vertically by the Current |
JUL 88 |
56 pages |
| Authors:
D. C. Echert; E. W. Geller; G. B. White; J. H. Morison; FLOW RESEARCH INC KENT WA
|
| This report describes the development and initial field test results of the Autonomous Ocean Profiler (AOP). The AOP is an oceanographic instrument platform for measuring profiles of physical, thermodynamic, and biological properties in the ocean. The profiler employs a hydrodynamic lift device to fly the instrument package up and down the water column along a taut vertical cable. Because the local currents drive the platform's vertical motion, power requirements are ... |
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| MultiRPC: A Parallel Remote Procedure Call Mechanism |
DEC 87 |
|
| Authors:
M. Satyanarayanan; E. H. Siegel; CARNEGIE-MELLON UNIV PITTSBURGH PA DEPT OF COMPUTER SCIENCE
|
 | MultiRPC is an invocation mechanism that enables a client to access multiple servers in a single remote procedure call. Parallelism is obtained from concurrency of processing on servers and from the overlapping of retransmissions and timeouts. Each of the parallel calls retains the semantics and functionally of the underlying remote procedure call mechanism. These include secure, authenticated communication and the use of application-specific side effects. The underlying communication medium does ... |
|
| The Analysis of Diskless Workstation Traffic on an Ethernet |
NOV 87 |
51 pages |
| Authors:
Riccardo Gusella; CALIFORNIA UNIV BERKELEY COMPUTER SYSTEMS RESEARCH GROUP
|
| This study analyzes the communication traffic on a medium-size Ethernet local area network that connects file servers to diskless workstations. The measurements differ from those of other studies in two important aspects. First, the Ethernet traffic is much higher. Second, the measurements are more accurate. For each packet, all the protocol information was extracted and recorded on tapes along with the packet arrival time. Less than one percent of the ... |
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| Broadcasting Topology and Routing Information in Computer Networks |
MAR 86 |
|
| Authors:
John M. Spinelli; MASSACHUSETTS INST OF TECH CAMBRIDGE LAB FOR INFORMATION AND DECISION SYSTEMS
|
| An efficient algorithm is presented which allows each node in a computer network to maintain a correct view of the network topology despite link and node failures. Reliability is achieved without transmitting any information other than the operational status of links. Messages are only sent in response to topological changes: periodic retransmission is not required. The algorithm is extended to allow nodes to maintain congestion measurements used in making routing ... |
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| TACFIRE Error Control: Improvements Using Iterated Codes |
JUN 85 |
|
| Authors:
A. B. Cooper III; ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| TACFIRE applies a shortened Hamming code to each character of a message. The correction of a single bit error within an encoded character is made by the Hamming decoder. Detectable but not correctable error patterns include all of two and many of four, six, eight, and 10 errors and cause rejection (nonacknowledgement) of the message. On noisy communication channels, retransmissions of rejected messages consume significant resources. To mitigate this high ... |
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| Differential NAVSTAR GPS (Global Positioning System) Design Concept for Harbor/Harbor Entrance Marine Navigation |
MAY 1984 |
|
| Authors:
J. Vilcans; R. M. Kalafus; TRANSPORTATION SYSTEMS CENTER CAMBRIDGE MA
|
| This report presents a design concept for a high-precision system for harbor/harbor entrance navigation. The concept is based on differential operation of NAVSTAR GPS, whereby local corrections to the satellite signals are broadcast to mariners in a harbor area. The system is expected to provide continuous navigation service with a predictable (absolute) accuracy of 8-12 meters (2drms). The design is configured around a hypothetical system to cover New York Harbor. ... |
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| Multiaccess Protocols for Variable Length Packets |
MAR 1983 |
|
| Authors:
Jacek Jachner; MASSACHUSETTS INST OF TECH CAMBRIDGE LAB FOR INFORMATION AND DECISION SYSTEMS
|
| New multiaccess protocols are introduced for a large delay satellite channel carrying bursty, variable length data traffic. A Poisson model is used for the transmission process, and all the stations are assumed to make error- free observations of the channel. High channel utilization is achieved without breaking up variable length messages into fixed length packets; the new protocols offer an alternative to existing Pure and Slotted Aloha protocols. The Variable ... |
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| On Retransmission Control Policies in Multiaccess Channels |
DEC 1982 |
|
| Authors:
D. Kazakos; L. Merakos; VIRGINIA UNIV CHARLOTTESVILLE DEPT OF ELECTRICAL ENGINEERING
|
| Aloha-type retransmission control policies have been proposed recently by Hajek and Van loon which can be implemented on a random access channel with ternary or binary feedback. They have shown that such schemes achieve a stable throughput of 1/e = .3678 for an infinite-population Poisson arrival model, by using simple first-order recursive retransmission policies. We drive measures of the speed of convergence and steady state accuracy for the local 'model' ... |
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| Rain-Outage Reduction by Data Storage in EHF SATCOM Systems. |
25 NOV 1980 |
|
| Authors:
Robert P. Rafuse; MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB
|
| Site diversity is usually proposed as a means for improving earth/satellite path availability at EHF, because intense rain cells are generally small in diameter. However, there are many applications, such as point-to-point, high-data-rate communications, where site diversity is either very inconvenient or impossible. In such cases, provided the user can accept a short delay, incoming data can be stored and retransmitted at a higher rate once the period of high ... |
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| Installation Data for Ground Moving Targets (GMTI/T) and Retransmission Guidance. |
MAY 1977 |
|
| Authors:
H. F. Weisenburger; RAYTHEON CO BEDFORD MASS MISSILE SYSTEMS DIV
|
| Documents the requirements for the design and analysis of, and the acceptance of Class II modification data and hazard analysis report for installation of Low Cost Attack Radar modified to gather ground moving target data in an AC-130H aircraft. (Author) |
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| The Distress Alerting and Locating System (DALS). Summary of Development and Documentation. |
APR 1977 |
|
| Authors:
J. R. Lindeblad; COAST GUARD RESEARCH AND DEVELOPMENT CENTER GROTON CONN
|
| This report documents the evolution of a Distress Alerting and Locating System (DALS) based on the retransmission of radio navigational aid signals. This equipment, developed from balloon tracking and meterological data gathering equipment manufactured by Beukers Laboratories, progressed through a test and development cycle culminating in a system that could: automatically alert search and rescue forces of a distress situation; identify the distressed vessel; automatically indicate the distress site location ... |
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| Development of a Distress Alerting and Locating System (DALS). |
NOV 1975 |
|
| Authors:
W. A. DeGeorge; J. R. Lindeblad; COAST GUARD RESEARCH AND DEVELOPMENT CENTER GROTON CONN
|
| An automated method of determining a distressed vessel's situation and position could be useful in the U. S. Coast Guard's search and rescue mission. Evaluation of commercially available retransmitting equipment, modified for use as a Distress Alerting and Locating System (DALS) was undertaken to determine its capabilities of automatically locating and identifying a vessel in distress, usefulness as a buoy position monitoring system, and usefulness as a vessel tracking system. ... |
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| Computer Modeling of Measurement of Winds Beneath Aircraft Using Omega Signal Betransmission. |
23 JUN 1975 |
|
| Authors:
James F. Morrissey; AIR FORCE CAMBRIDGE RESEARCH LABS HANSCOM AFB MASS
|
| The results of a computer model of the problem of measuring wind speed and direction beneath an airplane with retransmitted Omega signals are presented. The model simulates aircraft motion, sonde motion, signal-to-noise variation. Omega timing sequences, and the principal tracking features of the Beukers' WO-3 processing system. This WO-3 processor provides a measurement of the arrival time and signal quality for each of three Omega frequencies for each of four ... |
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| Remote Retransmission System C-7772/GRC. |
MAR 1974 |
55 pages |
| Authors:
Stanley D. Peirce; ARMY LAND WARFARE LAB ABERDEEN PROVING GROUND MD
|
| The report covers the development and test of Retransmission Units, C-7772/GRC. These units, when used with the tactical radios such as the PRC-77 and VRC-12, permit a commander to maintain radio communications while at a position remote from the radios so as to minimize his situation as a potential target. The units can also be used in a field-artillery telephone net with GRA-39's to allow the field-artillery commander use of ... |
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| Performance of Soft Limiting PSK and DPSK Spread Spectrum Systems. |
FEB 1974 |
|
| Authors:
J. J. Jones; J. Y. Huang; W. K. S. Leong; PHILCO-FORD CORP PALO ALTO CALIF WESTERN DEVELOPMENT LABS DIV
|
| An analytical study and investigation is carried out to model a phase-coded spread-spectrum communication system containing a soft-limiting satellite repeater. Useful mathematical expressions are obtained for the bit error probability for both coherent PSK and differential PSK biphase data modulation combined with phase-coded biphase or quadriphase spread-spectrum modulation. A study of soft limiter models is performed, resulting in the selection of the error function amplitude characteristic to represent the soft-limiting ... |
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| Assessment of Modifications to the Experimental Distress Alerting and Locating System. |
DEC 1973 |
|
| Authors:
E. Feinberg; P. Steen; D. McGregor; M. Cornell; J. Brown; OPERATIONS RESEARCH INC SILVER SPRING MD
|
| The report documents a study of modifications required to allow for the use of the experimental Distress Alerting and Locating System (DALS) as a preoperational SAR system. In particular, the following areas are addressed: Multiple access and false alarms in an attempt to prevent system saturation; Automatic deployment techniques for the user device (hand-held unit); Situation coding to describe emergency status of distressed vessel/person; The feasibility of a frequency modification ... |
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Reports by Keyword(s)
RETRANSMISSION
