Download or read book Discrete Event Dynamic System Based Approaches for Scheduling Transmissions in Multihop Packet Radio Networks written by and published by . This book was released on 1993 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the classic transmission scheduling problem, the nodes of a Packed Radio Network (PRN) broadcast fixed-length packets over a common resource (the channel). Packet transmissions are subject to interference constraints; for example, if a node is transmitting a packet, then all adjacent (neighboring) nodes must refrain from transmission. One then adopts a slotted time model where every slot is allocated to a set of nodes which can simultaneously transmit without conflict. Thus, a node is generally belongs to one or more of these sets(called transmission sets). Our approach is based on viewing the transmission scheduling problem as a single server multiclass polling problem with simultaneous resource possession. Here, a class corresponds to a transmission set. The server corresponds to a channel operating with deterministic service times: a service time is equal to one time slot required for transmitting a packet. The scheduling problem is then equivalent to assigning the server (equivalently, each time slot) to a particular transmissions set. The simultaneous resource possession feature arises because the server is assigned to a transmission set, i.e. it can simultaneously provide service to packets from all nodes which belong to that set. The construction of the transmission set is dependent upon the topology and connectivity of the PRN and is equivalent to a graph partitioning problem. For our purposes, we assume M transmission sets have been specified. Finally, we allow for overlapping transmission sets, i.e. a node can belong to two or more difference transmission sets.

Download or read book Discrete Event Dynamic System Based Approaches for Control in Integrated Voice Data Multihop Radio Networks written by Christos G. Cassandras and published by . This book was released on 1993 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes the progress made towards the effort to develop and apply new discrete-event-dynamic-system-based techniques for the transmission scheduling problem in Radio Networks (RN). The report is in two parts: in part one we examine the transmission scheduling problem in the context of (fixed length) data traffic. In contrast to our earlier work, performed under contract N000014-91-J-2025, which dealt with the broadcast scheduling problem in a fully connected packet RN, the first part of this report extends the proposed methodology therein to general topology networks. In part two, we look at the scheduling problem when processing packetized voice calls in a N-node multihop RN. As will be seen, the different Grade-of-Service (GOS) requirements associated with voice and data traffic lead to two decidedly different scheduling policies. We begin with a brief review of the transmission scheduling problem in N-node Radio Networks.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Annual Index written by and published by . This book was released on 1994 with total page 1746 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Topology independent Transmission Scheduling Algorithms in Multihop Packet Radio Networks written by Jong-Hoon Youn and published by . This book was released on 2002 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this paper, based on coding theory concepts, new time scheduling algorithms for multihop packet radio networks are described. Each mobile host is assigned a word from an appropriate constant weight code of length n, distance d and weight w. The host can send a message at the j[superscipt th] slot provided the assigned code has a 1 in this j[superscipt th] bit. The proposed algorithms are better than the previously known algorithms in terms of minimum system throughput and/or delay bound. The algorithms also preserve other desired properties, such as topology independence, guaranteed minimum throughput, bounded maximum delay, and fair transmission policy. In the simulation, we measure the average system throughput of transmission scheduling algorithms. The simulation results show that the proposed algorithms outperform the previously known algorithms in terms of mean system throughput.

Download or read book Government Reports Announcements Index written by and published by . This book was released on 1994 with total page 684 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scheduling Packet Transmissions in a Multi hop Packet Switched Network Based on Message Length written by and published by . This book was released on 1997 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper describes two algorithms for scheduling packets in a multi-hop network. The objective of the algorithms is to reduce end-to-end message (not packet) transmission delays. Both algorithms schedule packet transmissions based on the length of the original message that the packet belongs to. The first algorithm is preemptive and is based on the shortest-message-first principle and the second is based on the shortest-remaining-transmit-time principle. We develop simulation models for analyzing the algorithms. The simulations show that when message sizes vary widely, these algorithms can significantly reduce average end-to-end message delays compared to First-Come-First-Serve scheduling.

Download or read book The Transfer of Scholarly Scientific and Technical Information Between North and South America written by Victor Rosenberg and published by Metuchen, N.J. : Scarecrow Press. This book was released on 1986 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: To find more information about Rowman and Littlefield titles, please visit www.rowmanlittlefield.com.

Download or read book Science Abstracts written by and published by . This book was released on 1993 with total page 980 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Comprehensive Dissertation Index written by and published by . This book was released on 1989 with total page 1116 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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Download or read book Next Generation Wireless Communications Using Radio over Fiber written by Nathan J. Gomes and published by John Wiley & Sons. This book was released on 2012-08-15 with total page 315 pages. Available in PDF, EPUB and Kindle. Book excerpt: Taking a coherent and logical approach, this book describes the potential use of co-ordinated multipoint systems supported by radio over fiber. It covers an impressive breadth of topics, ranging from components, subsystem and system architecture, to network management and business perspectives. The authors show the importance of radio over fiber in eliminating or mitigating against the current, perceived barriers to the use of co-ordinated multipoint, and the drivers for standardisation activities in future mobile/wireless systems over the next few years. The book brings together the system concept for centralized processing, including what is required for co-existence with legacy wireless systems, the algorithms that can be used for improving wireless bandwidth utilization at physical and MAC layers and the radio over fiber network and link design necessary to support the wireless system. Other important research is also covered as the authors look at compensating for radio over fiber impairments and providing simple network management functions. A study of service provision and the business case for such a future wireless system is also fully considered. This book comes at an important time for future wireless systems with standardization of fourth generation wireless systems still ongoing. The content enables readers to make key decisions about future standardisation and their own research work. The business analysis also makes the book useful to those involved in deciding the future directions of telecoms organisations. This information will be core to their decision-making as it provides technical knowledge of the state-of-the-art but also system level assessments of what is possible in a business environment.

Download or read book MOBICOM written by and published by . This book was released on 2004 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Index to IEEE Publications written by Institute of Electrical and Electronics Engineers and published by . This book was released on 1989 with total page 944 pages. Available in PDF, EPUB and Kindle. Book excerpt: Issues for 1973- cover the entire IEEE technical literature.

Download or read book Electrical Electronics Abstracts written by and published by . This book was released on 1989 with total page 1722 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book International Aerospace Abstracts written by and published by . This book was released on 1989 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Index to Theses with Abstracts Accepted for Higher Degrees by the Universities of Great Britain and Ireland and the Council for National Academic Awards written by and published by . This book was released on 2004 with total page 678 pages. Available in PDF, EPUB and Kindle. Book excerpt: Theses on any subject submitted by the academic libraries in the UK and Ireland.