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Resource Optimization of Spatial TDMA in Ad Hoc Radio Networks
Resource Optimization of Spatial TDMA in Ad Hoc Radio Networks

... receiving an increasing interest. The most attractive feature of ad hoc networks is the flexibility. The network is set up by a number of units in an ad hoc manner, without the need of any fixed infrastructure. Communication links are established between two units if the signal strength is sufficien ...
Service - dc.uba.ar
Service - dc.uba.ar

... information about packet transmitted from the node , and is responsible for mapping network activity to the slice generates it. • Trustworthy audit chain : packet signature--> slice ...
Question 55 - classes.cs.uchicago.edu
Question 55 - classes.cs.uchicago.edu

High Speed Communication Protocols
High Speed Communication Protocols

... ack N this implies that all packets up to N have been received successfully This restriction provides simple, but inefficient ack technique Selective ack is more efficient Block ack technique has been proposed to improve efficiency ...
ch4
ch4

... Interconnecting Networks Problem: There’s more than one network • Problems of Heterogeneity and Scale – Heterogeneity- users on one type of network want to be able to communicate with users on other types of networks. – Internet Protocol(IP) and how it is used to build heterogeneous, scalable netwo ...
OPNET Simulation of Self-organizing Restorable
OPNET Simulation of Self-organizing Restorable

... approach further. In this regard one of the key issues to realizing a practical restoration scheme is the complexity of computing and deploying an always-current spare capacity plan to support the restoration mechanism. One way to compute the optimal p-cycle spare capacity and configuration plan is ...
Subnetting_and_supernetting
Subnetting_and_supernetting

... Use a default router if nothing matches Not necessary for all 1s in subnet mask to be contiguous Can put multiple subnets on one physical network(?!) Subnets not visible from the rest of the Internet ...
PPT1 - ICICS - University of British Columbia
PPT1 - ICICS - University of British Columbia

... Instructor: Dr. Son T. Vuong ...
1 slide per page
1 slide per page

... Client browser requests web page from web server Web server provides page as response Network Time Protocol (NTP) Client system requests time from time server Time server provides time as a response Computer Networks — Hadassah College — Fall 2012 ...
PDF
PDF

... TCP and SCTP are working on transport layer and they help in communication. SCTP is a four handshake scheme which also enhances the security of the system. In this work performance of TCP and SCTP is measured for Ad-hoc network and it has been analyzed that SCTP gives better result for all the netwo ...
3rd Edition: Chapter 4
3rd Edition: Chapter 4

... analogous to TCP/UDP connection-oriented / connectionless transport-layer services, but:  service: host-to-host  no choice: network provides one or the other  implementation: in network core ...
NSF_Vehicles_and_Internet_role-jan_16_Claudio
NSF_Vehicles_and_Internet_role-jan_16_Claudio

... broadcast safety messages is via reliable, robust flooding. However, the efficiency of flooding quickly decreases with the number of nodes; thus, flooding must be scope-limited. For scalable delivery, researchers have proposed georouting and further, have focused on exploiting innate characteristics ...
3rd Edition: Chapter 4
3rd Edition: Chapter 4

...  range of addresses not needed from ISP: just one IP address for all devices  can change addresses of devices in local network ...
chapter4-2007
chapter4-2007

... computation, exchange of info with neighbors  “distance vector” algorithms ...
MPLS Traffic Engineering (TE) Tutorial
MPLS Traffic Engineering (TE) Tutorial

...  Do not use links left with less than 7Mb/s bandwidth  Do not use blue-colored links for this request  Use a path with delay less than 130ms ...
Slide 1
Slide 1

...  First refinement: We can have a single entry for all hosts connected to the same network and only check the netid part of the internet address. ...
JA2315061508
JA2315061508

... In OBS control and payload is decoupled. Control is sent on a control channel and payload data on data channels. Control packet is sent first followed by the payload on a separate wavelength channel after an offset time equal to the processing time of control packet at intermediate node[3]. Control ...
Intro to Metro WAN
Intro to Metro WAN

... • Metro Ethernet is a service in which the provider creates a door-to-door Ethernet connection between two locations ...
September 2016 report
September 2016 report

... updates. These updates are sent only when the path or the metric for a route changes; they contain information about only that changed link rather than the entire routing table. Propagation of these partial updates is automatically bounded so that only those routers that require the information are ...
January  1982 LIDS-P-1175 DISTRIBUTED MINIMUM HOP ALGORITHMS* by
January 1982 LIDS-P-1175 DISTRIBUTED MINIMUM HOP ALGORITHMS* by

... rithms used for solving some global problem such as the building block problems mentioned above. For readers familiar with layered network architectures, the assumptions above effectively assume the existence of lower level line ...
Chapter 7
Chapter 7

... If a packet is received with an unknown destination address within an unknown subnet of a directly attached network, the router assumes that the subnet does not exist, and will drop this packet. To get around this problem, use a global command: ip classless. ...
CCL Advanced Applications (Cont`d)
CCL Advanced Applications (Cont`d)

... – assigning tokens & updating the message state ...
Bayes-Ball: The Rational Pastime (for Determining Irrelevance and
Bayes-Ball: The Rational Pastime (for Determining Irrelevance and

... only allow the algorithm to terminate, but they also record significant results. Returning to the belief network shown in Figure 3a, apply these modifications to obtain the network shown in Figure 3c. At the start, node 6 is visited (as if from its child) and it sends the ball to its parents and chi ...
Redirection of call to MS at a visiting location
Redirection of call to MS at a visiting location

... If CoA of the FA is used, then packet reaches FA, it decapsulates packet and passes to MS at the link layer In an internet environment, it is called Mobile IP After binding time, if MS still wants to have packets forwarded through HA, it needs to renew its registration When MS returns to its home ne ...
Chapter 10.slides
Chapter 10.slides

... The reduction in total external bandwidth used: The total external bandwidth is inversely related to the hit ratio, since it is only cache misses that generate requests to external web servers The latency perceived by users for access to web objects: The use of a routing overlay results in several m ...
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Routing in delay-tolerant networking

Routing in delay-tolerant networking concerns itself with theability to transport, or route, data from a source to adestination, which is a fundamental ability all communication networks musthave. Delay- and disruption-tolerant networks(DTNs) are characterized by their lack of connectivity, resulting in a lack of instantaneous end-to-end paths. In these challenging environments, popular ad hoc routing protocols such as AODV and DSR fail to establish routes. This is due to these protocols trying to first establish a complete route and then, after the route has been established, forward the actual data. However, when instantaneous end-to-end paths are difficult or impossible to establish, routing protocols must take to a ""store and forward"" approach, where data isincrementally moved and stored throughout the network in hopes that it will eventually reach its destination. A common technique used tomaximize the probability of a message being successfully transferred is toreplicate many copies of the message in hopes that one will succeed inreaching its destination.
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