Enhanced Buffer Management Policy and Packet Prioritization for Wireless Sensor Network

Abstract

Limited storage of the sensor node is one of the main causes of packet drop in the Wireless sensor network (WSN). Frequent link disconnection is also another cause of packet drop. Due to lack of continues end-to-end connection; neighbouring nodes might not be able to connect with one another. Hence, communication may be setup with the help of store and forward approach between the source and destination. In that case, the sensor node may not be capable of storing a chunk of data since the buffer is available in a small amount. In order to store the data packets in the buffer when the link is down, an effective buffer management scheme is highly needed to keep the data packets for a long time until the link is re-established. This paper proposes a new buffer management scheme called Packet Priority Heterogonous Queue (PPHQ), which based on prioritizing and classifying the packets into different categories to minimize the loss of important packets. Unlike the existing Multi-layer WSN, that treats the data packets differently; we considered the data packets such as; temperature, humidity, and pressure to be same. However, the classification of different packet types is based on the sensor's information value. We completely divide the whole buffer into different queues, and thus the newly arrived packets are inserted in their corresponding queue. The buffer will then prioritize and schedule on which packet to be stored or transmit first when the buffer is overloaded. Our result exhibits that PPHQ scheme indeed provides minimum packet drop as well as maximum throughput compared to existing Multi-layer WSN buffer management schemes.

MANET Performance Measurement of DYMO Routing Protocol by Varying Density and Mobility Speed

“…Throughput (TP): Throughput is the number of packets successfully delivered per unit time. This is referred to the amount of transmission data from source to destination node [21] [25].…”

Peningkatan Kualitas Video Conference Menggunakan Packet Priority

“…Pada lingkungan Wireless Sensor Network, pengiriman data secara real-time sangat dibutuhkan karena data dari sensor harus dikirimkan secepat mungkin kepada aplikasi pengolah data tersebut sehingga pengguna akan mendapatkan data secara real-time. Upaya peningkatan kecepatan pengiriman data dilakukan dengan berbagai teknik salah satunya dengan buffer management [7]. Penelitian ini mengemukakan teknik baru yang disebut dengan Packet Priority Heterogonous Queue (PPHQ).…”

Investigating the efficiency of multithreading application programming interfaces for parallel packet classification in wireless sensor networks

“…Packet classification is nothing but discriminating packets according to a set of predefined rules [20,21]. Accelerating this fundamental process directly affects the overall performance of the WSN systems so that the packet loss, delay, and buffer requirement are reduced [4,11,14,18,22,23].…”

“…To accelerate the complex functions in analyzing high-dimensional and self-correlated data over WSN, packet classification, a primary process inherited form software-defined networking (SDN), is inevitable [7,10,11,[14][15][16][17]. This process accelerates the overall process of base stations by provisioning fast flow-based network functions instead of slow packet-based ones [18,19].…”