MPEG-4 video transmission using distributed TDMA MAC protocol over IEEE 802.15.4 wireless technology

The issues of green technology nowadays give an inspiration to the researcher to make all the future design to be energy efficient. Medium Access Control (MAC) layer is the most effective layer to provide energy efficient due to its ability to control the physical radio directly. One of the important applications in the future is a video transmission that can be transmitted with low-cost and low power consumption. MPEG-4 is one of the international standards for moving video. MPEG-4 provide better compression and primarily design at low bit rate communication. In order to achieve good quality for video application, the design at MAC layer must be strong. Therefore, to increase the performance of the MPEG-4 in IEEE 802.15.4, in this paper we propose a cross layer design between MAC layer and Application layer. A priority queue will be implemented at MAC scheduling depends on the level of frame important in MPEG-4 format frame. A distributed Time division Multiple Access (TDMA) will be used for MAC protocol to provide reliable data transmission for high priority frame

Development of energy aware TDMA-based MAC protocol for wireless sensor network system

The development of wireless sensor networks (WSN) can be motivated by several types of applications such as habitat monitoring, smart healthcare system, building automation, and etc. These applications however, demand an energy-efficient WSN that can prolong the network lifetime and can provide high throughput, low latency and delay, and high packet received rate data communication. The ability of wireless network structure to minimize network lifetime is among the hot topic due to limitation resources such as energy, processing and memory, in sensor network architecture itself. This paper proposes a novel approach that tries to reduce idle energy consumption by implementing active-sleep algorithm named energy aware A-MAC protocol. The result from the computational model shows that the algorithm can prolong network lifetime due to efficiency in energy consumption from time slot management