In era Internet of Thing (IoT), Wireless Sensor Network (WSN) is the most important device involved in communication networks between two or more nodes [1]. The growth of communication in the network may cause the performance of delivering packets to become slower or it could be loss packets during transmission time. There are many factors need to be considered in order to decrease the packet loss such as energy consumption, memory space, load balancing, network lifetime, etc. The main focus in this paper is to identify the most problematic issues that happen in the Wireless Sensor Network which is focus on balance heavy traffic load and the energy consumption on the network system. Some comparison will be recognized based on several reviewed research paper and will show the strength and limitation on Wireless Sensor Network communication.