Himansha Sharma, Yogendra Kumar Jain, Geetika S. Pandey
As wireless communication gains popularity, significant research has been devoted to supporting real –time transmission with stringent Quality of Service (QoS) requirements for wireless applications. At the same time, a wireless ad-hoc network that integrates a mobile ad-hoc network (MANETs) has been proven to be a better alternative for wireless communication. Due to bandwidth constraint and dynamic topology of the MANETs, supporting Quality of Service (QoS) is challenging task. This paper proposes a simple, yet effective, method for nodes in MANETs to compute their available bandwidth in a distributed way. Based on this value, a QoS reservation mechanism is introduced for MANETs, allowing bandwidth allocation on a per flow basis. This allows nodes to select the highest possible transmission rate for exchanging data, independently for each neighbor. Our mechanism not only guarantees certain QoS levels, but also naturally distributes the traffic more evenly among network nodes (i.e. load balancing). The paper analyzes the applicability of the proposed mechanism over both proactive and reactive routing protocols, and extensions to such protocols are proposed whenever needed in order to improve their performance on ad-hoc networks.
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