An Efficient Buffer Overflow Control Scheme to Mitigate Packet Loss in Manets

B Purushotham, ,Ch D V Subba Rao

doi:10.35940/ijeat.b3732.029320

Abstract

MANET (Mobile Ad hoc Network) is self-configuring, self-organizing, infrastructure-less network of mobile devices connected without wires. Because of the dynamic changes in the network topology, there is no centralized control in ad hoc networks. So, mobile nodes can communicate with each other via intermediate nodes. The buffer size of intermediate nodes plays a significant role to hold packets in the buffer before dropping the newly arrived packets. In MANET, buffer overflow (congestion) occurs in any intermediary nodes when data packets pass through source to destination and incurs packet loss, which causes the performance degradations of a network. Congestion can be reduced by using several Active Queue Management [AQM] techniques. Queue Management Node or “QMN” is an active queue management strategy to control packet drops by assigning space of a buffer node to all its neighbouring nodes dynamically depending upon the total number of packets received from its neighbours. In this scheme, authors did not take into account the impact of collaboration between neighbors of a central node. They only consider the characteristics of nodes, while ignoring the message properties in MANET. And also a new node has to be waiting until it will get enough equal space from the QMN along with other neighbor nodes. During this waiting period, high packet loss can be occurred. So, an efficient buffer overflow control scheme is required to make sure every node has adequate storage space to hold the data once the buffer of the node is near to congestion. In this paper, we proposed a scheme that integrates QMN technique with combinational buffer management (CBM) strategy, which includes both the features of messages and nodes, and transfer the duplicated messages to neighbour node for total utility optimization, rather than deleting them. By using this scheme packet loss can be mitigated in MANETs efficiently. Our simulation results here reveal that, the proposed scheme achieves better performance than other existing schemes in terms of packet delivery ratio, throughput, overhead ratio and end to end delay .

Highlights

MANETs are self-configuring networks of independent mobile wireless nodes without additional infrastructure or central administration [1]
Taking into account the above facts, we presented an efficient buffer management scheme by combining the queue management node scheme (QMN) with combinational buffer management (CBM) strategy which considered the characteristics of messages and nodes; in the meantime, this scheme contains message migration mechanism that effectively removes and transfers messages
We proposed a novel buffer management scheme to minimize packet loss in ad hoc wireless networks

Summary

INTRODUCTION

MANETs are self-configuring networks of independent mobile wireless nodes without additional infrastructure or central administration [1]. The mobile and wireless networks still use Drop Tail policies for packet queue management and the efforts to achieve AQM in those networks are very limited It is observed when AQM is implemented in the nodes of MANET, Revised Manuscript Received on February 05, 2020 * Correspondence Author. Efficient queuing in the buffer can be achieved by using a centrally communicating node called QMN This scheme can allocate buffer space of QMN to all its neighboring nodes dynamically depending on the number of packets received from neighbors and thereby reducing packet drop probabilities. The following are the contributions of this research work: Integrate queue management node scheme (QMN) with CBM strategy to allocate buffer space dynamically and decision will be taken whether to accept a newly arrived message or not is basing on the utility value the message and that of the node.

REVIEW ON RELEVANT WORK

PROPOSED MODEL

Neighbor Node discovery

Queue Management Strategy

PERFORMANCE EVALUATION

CONCLUSION