Application of TDMA technique to improve Data rate in Mobile ad hoc networks (MANET)
C. Umunna, Fazal Rabi, A. Bah · 2008
Mobile ad hoc networks (MANET) consists of group of mobile nodes which may communicate without any form of pre existing infrastructures, these nodes exhibit dynamic topology and random movement which causes variations in link capacity. Routing traffic between MANET nodes experience collisions, end to end delay (E2E) and total loss of data packets due to limited bandwidth between nodes. These result in poor Quality of Service (QoS) and E2E delay throughput. In this paper we have proposed the application of time division multiple access (TDMA) technique to improve data rate and reduce control and data over- head collisions. We compared the existing normal routing scheme and the TDMA based scheme. TDMA allows a number of clients to access a single radio-frequency channel without interference by allocating unique time slots to each user within each channel, reducing the loss of packets and improving the data rate thereby delivering QoS to the clients. outing traffic between MANET nodes experience collisions, E2E and total loss of data packets due to limited bandwidth between nodes. These result in poor QoS and delay throughput. The transmission time is delayed when collision occurs resulting in an increase in the contention window within a multi hop transmission channel leading to a decrease in data rates. However, In this paper we investigated how to improve the data rate and reduce the effect of these collisions for a reliable end to end throughput by proposing a time division multiple access (TDMA) technique based on Binary Exponential Back off Algorithm (BEBA). Our analysis showed that this scheme when compared with the existing normal route technique provides a considerable improvement in control and over head data rates, as well as reduces the loss of data packet using the available bandwidth.