Abstract:

Wireless sensor networks (WSN) can be broadly used in military and civilian areas. Due to the limitations of inherent characteristics of sensor nodes and lack of high level protocols and abstract algorithms suitable for the speed of processing large networks, it is crucial for the WSN to satisfy the demand of the user's quality of service (QoS), and the research of QoS in real applications has become a hot issue. The paper firstly introduces the main QoS parameters of the WSN, secondly analyzes the QoS parameters such as energy efficiency, packet loss rate, throughput and transmission latency in three kinds of typical topology structures, thirdly builds up a general simulation platform for the WSN using NS2, and finally simulates and analyzes the main QoS parameters of the WSN on the platform. The simulation obtains effects on QoS parameters under different kinds of topology structures.

Key words: QoS;energy efficiency;packet loss rate;throughput;transmission latency;wireless sensor networks