東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Adaptable protocol stack architectur...

Kumar, Rajnish.

Linked to FindBook

Google Book

Amazon

博客來

Adaptable protocol stack architecture for future sensor networks .

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Adaptable protocol stack architecture for future sensor networks ./
Author:	Kumar, Rajnish.
Description:	147 p.
Notes:	Adviser: Umakishore Ramachandran.
Contained By:	Dissertation Abstracts International68-01B.
Subject:	Computer Science. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3248717

Adaptable protocol stack architecture for future sensor networks .
Kumar, Rajnish.

Adaptable protocol stack architecture for future sensor networks . - 147 p.

Adviser: Umakishore Ramachandran.

Thesis (Ph.D.)--Georgia Institute of Technology, 2006.

Current technology trends suggest that futuristic wireless sensor networks (FWSN) are well equipped to support applications such as video surveillance and emergency response that have, in addition to high computation and communication requirements, a need for dynamic data fusion. Because of the dynamic and heterogeneous nature of FWSN environment, adaptability is emerging as a basic need in designing network protocols. Adaptability can be broadly supported at two levels: network level and node level. At the network level, different nodes are the entities that adapt their roles in a cooperative manner to improve network level cost metrics. Similarly, at the node level, different protocol modules are the entities that adapt their behavior in a holistic manner to best perform the roles assigned to the node.Subjects--Topical Terms:

626642
Computer Science.

Adaptable protocol stack architecture for future sensor networks .
LDR:04203nam 2200289 a 45 001 970695
005 20110921
008 110921s2006 eng d
035 $a (UMI)AAI3248717
035 $a AAI3248717
040 $a UMI $c UMI
100 1 $a Kumar, Rajnish. $3 1294731
245 1 0 $a Adaptable protocol stack architecture for future sensor networks .
300 $a 147 p.
500 $a Adviser: Umakishore Ramachandran.
500 $a Source: Dissertation Abstracts International, Volume: 68-01, Section: B, page: 0393.
502 $a Thesis (Ph.D.)--Georgia Institute of Technology, 2006.
520 $a Current technology trends suggest that futuristic wireless sensor networks (FWSN) are well equipped to support applications such as video surveillance and emergency response that have, in addition to high computation and communication requirements, a need for dynamic data fusion. Because of the dynamic and heterogeneous nature of FWSN environment, adaptability is emerging as a basic need in designing network protocols. Adaptability can be broadly supported at two levels: network level and node level. At the network level, different nodes are the entities that adapt their roles in a cooperative manner to improve network level cost metrics. Similarly, at the node level, different protocol modules are the entities that adapt their behavior in a holistic manner to best perform the roles assigned to the node.
520 $a The goal of this thesis is to provide an adaptable protocol stack architecture for data fusion applications. Towards this goal, the thesis presents a software architecture called SensorStack, that raises and answers three set of questions. First, towards network-level adaptability, how best to dynamically adapt the placement of a fusion application task graph on the network? How best to support such an adaptation in an application-specific manner? We have designed a distributed role assignment algorithm and implemented it in the context of DFuse, a framework for distributed data fusion. Simulation results show that the role assignment algorithm significantly increases the network lifetime over static placement.
520 $a Second, towards node-level adaptability, how best to facilitate cross-layering on a node to foster agile adaptation of a node's behavior commensurate with the network-level changes? SensorStack provides information exchange service (IES), a framework for cross-module information exchange. IES can be thought of as a centrally controlled bulletin-board within each node where different modules can post available data, or request information, and get notification when information becomes available. IES preserves the benefits of layering while facilitating adaptability. IES has been implemented in TinyOS and Linux, to show both the feasibility of the design as well as demonstrate the utility of cross-layering to increase application longevity.
520 $a Third, how best to integrate node-level and network-level adaptability? How best to design a scalable dissemination protocol for sharing information across nodes? Towards tying the network and node level adaptability together, control data published in IES needs to be shared across the network. SensorStack uses a probabilistic broadcast-based dissemination service (IDS) for control data. Simulation experiments show that IDS allows nodes to share IES data more efficiently than using multiple diffusion trees. More broadly, an efficient and reliable dissemination of information over a large area is a critical ability of a sensor network for various reasons such as software updates and transferring large data objects (e.g., camera images). Thus, for bulk data broadcast, we design FBcast, an extension of the probabilistic broadcast based on the principles of modern erasure codes. Simulation results on TOSSIM show that FBcast offers higher reliability with lower number of retransmissions than traditional broadcasts.
590 $a School code: 0078.
650 4 $a Computer Science. $3 626642
690 $a 0984
710 2 0 $a Georgia Institute of Technology. $3 696730
773 0 $t Dissertation Abstracts International $g 68-01B.
790 $a 0078
790 1 0 $a Ramachandran, Umakishore, $e advisor
791 $a Ph.D.
792 $a 2006
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3248717