Enhancing the Performance of Ad Hoc Wireless Networks with by Somprakash Bandyopadhyay

By Somprakash Bandyopadhyay

Written through prime experts within the box, improving the functionality of advert Hoc instant Networks with clever Antennas offers an summary of simple MAC and routing protocols in advert hoc networks and provides the suggestions and strategies utilized in designing MAC and routing protocols for more desirable medium usage and more desirable routing functionality with powerful load balancing utilizing shrewdpermanent antennas. It addresses many of the layout concerns regarding priority-based QoS routing protocols with clever antennas to demonstrate the opportunity of those antennas on the subject of omni-directional antennas within the context of advert hoc community. different discussions discover open difficulties and demanding situations within the box.

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For instance, consider a route A. fm Page 36 Tuesday, March 14, 2006 11:14 PM 36 Ⅲ Enhancing the Performance of Ad Hoc Wireless Networks another route, say route B, if either A had a higher sequence number, indicating that it is a fresher route, or if they both had the same sequence number, indicating that route A has a lower hop count. Essentially, the use of sequence numbers helps prevent routing loops when broken links occur. Consider a situation where a route is found to be redundant, and it can no longer be reached.

Proposed a power-control scheme that maintains a minimum transmission power level for effective transmission of packets using directional antennas. In that scheme, the RTS and CTS packets are sent with maximum power, but the data packets are transmitted with power control. The RTS/CTS exchange is utilized to determine the power for transmitting the data packet. They assumed that when a destination node receives an RTS packet, it computes the amount by which the SINR of the RTS packet exceeds the SIRmin threshold.

18 While ondemand medium access schemes determine the communicating pair by exchanging short control signals such as RTS/CTS before each transmission session, scheduled medium access schemes prearrange or negotiate a set of timetables for individual nodes or links. 15 Each node keeps certain neighborhood information dynamically through the maintenance of an angle signal table (AST). Here, each node knows the direction of its neighbors and communication events going on in its neighborhood at that instant of time.

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