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FUNDAMENTAL OF ADHOC AND SENSOR NETWORK
Dr. Jasleen KaurDr. Balkar SinghDr. Anuj KumarDr. Ram Paul
出版Xoffencerpublication, 2024-02-08
主題Medical / Nursing / Fundamentals & Skills
ISBN81195344339788119534432
URLhttp://books.google.com.hk/books?id=yYIlEQAAQBAJ&hl=&source=gbs_api
EBookSAMPLE
註釋The industry dealing with wireless communications has experienced an unprecedented boom throughout the past several years. Thanks to the possibilities of wireless technology, it is feasible to connect with almost every point on Earth's surface from almost anywhere. Hundreds of millions of people use the internet to communicate and exchange data every day. A variety of wireless communication devices, including pagers, mobile phones, laptops, and PDAs, are utilised by these individuals for this purpose. The phenomenal success of wireless phone and message services makes the transition to wireless communication in the realm of personal and corporate computers all the more predictable. Because there will be no longer be any restrictions imposed by wired networks, people will be able to access and exchange information globally from almost any place they can imagine. Alternatively stated, a Mobile Ad hoc Network (MANET) [Agrawal2002, Cordeiro2002, Perkins2001] is a network that may be instantaneously formed without relying on preexisting infrastructure or additional permanent stations. Put simply, it is a network that can be constructed as needed. To give this argument more structure, we can say that an ad hoc network (abbreviated as "ad hoc") is a self-governing system consisting of mobile hosts (MHs) that act as routers and are linked to each other via wireless connections. The combination of different MHs yields a communication network represented by an arbitrary communication graph. In contrast, by repurposing base stations (BSs) as access points, the famous single-hop cellular network architecture may meet the needs of wireless communication. That is not the case, though, as was previously stated. The only means for two mobile nodes in a modern cellular network to communicate with each other are through the cable backbone and the fixed base stations. A MANET lacks this kind of infrastructure, and the topology of the network might alter in an unforeseen way due to its increased dynamic nature, as nodes are free to move around. This is due to the fact that MANETs are more dynamic. Regarding their mode of operation, ad hoc networks are essentially just peer-to-peer multihop mobile wireless networks. As seen in Figure 1.1, these networks are designed to carry data packets using a store-and-forward technique, which involves transferring them from one location to another via intermediate nodes. Packet forwarding over the network does this. Since the MHs are in motion, the other nodes in the network must be informed of the ensuing topological change. This occurs as a result of the MHs' mobility. Because of this, you can choose to keep the old topological data or delete it. When nodes in the network change their point of attachment, like the MH2 node in Figure 1.1 does, from MH3 to MH4, other nodes should utilise this new channel to send packets to the MH2 node.