A Survey of Carrier Sense Multiple Access and Multiple Access with Collision Avoidance over DSR
Abstract
The broadcast nature of wireless network critically depends upon the medium access control (MAC) protocols. A MAC protocol in a multi-access medium is essentially a distributed scheduling algorithm that allocates the channel to requesting nodes [3]. In MAC Layer, wireless broadcast medium is used and therefore multiple transmissions can result in garbled data, making communication impossible. A medium access control (MAC) protocol moderates access to the shared medium by implementing some rules that allow these devices to communicate in orderly and efficient manner with each other.
MAC protocols therefore plays very important role in enabling this paradigm by fair sharing of the wireless bandwidth. The medium require delay and jitter guarantees from network. MAC protocols design and selection based performance (throughput, delay, packet delivery ratio).
There are number of MAC protocols proposed for MANET to solve the above discussed problems such as CSMA, MACA, MACAW, MACA-BI, IEEE 802.11, FAMA and more. While studying the MAC protocols, the selection of the MAC protocol depends on efficient performance it provides. CSMA and MACA are found more reliable and basic protocols required for a wireless scenario among these protocols.
Mobile Ad hoc Network (MANET) is a self-configuring network of mobile devices and connected by non-wired links. In other words a MANET is a group of wireless mobile computers in which node moves in independent manner in any direction. The nature of MANETs brings a great challenge to system security. In such a network, each mobile node operates not.
Only as a host but also as a router, forwarding packets for other mobile nodes in the network that may be multiple hops away from each other.
Another effective method to increase the capacity of a wireless network is power control [9]. By controlling its transmission power, a node can achieve its transmission quality while at the same time reduce the interposition in the channel. Power control can also alleviate the effect of nodal movement to some extend
Keywords-AWNs; MACA; CSMA; DSR; Throughput.
MAC protocols therefore plays very important role in enabling this paradigm by fair sharing of the wireless bandwidth. The medium require delay and jitter guarantees from network. MAC protocols design and selection based performance (throughput, delay, packet delivery ratio).
There are number of MAC protocols proposed for MANET to solve the above discussed problems such as CSMA, MACA, MACAW, MACA-BI, IEEE 802.11, FAMA and more. While studying the MAC protocols, the selection of the MAC protocol depends on efficient performance it provides. CSMA and MACA are found more reliable and basic protocols required for a wireless scenario among these protocols.
Mobile Ad hoc Network (MANET) is a self-configuring network of mobile devices and connected by non-wired links. In other words a MANET is a group of wireless mobile computers in which node moves in independent manner in any direction. The nature of MANETs brings a great challenge to system security. In such a network, each mobile node operates not.
Only as a host but also as a router, forwarding packets for other mobile nodes in the network that may be multiple hops away from each other.
Another effective method to increase the capacity of a wireless network is power control [9]. By controlling its transmission power, a node can achieve its transmission quality while at the same time reduce the interposition in the channel. Power control can also alleviate the effect of nodal movement to some extend
Keywords-AWNs; MACA; CSMA; DSR; Throughput.
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