A Survey on the Mobile Sink Hierarchical Routing Protocols in the Wireless Sensor Networks

The wireless sensor/actor network (WSAN) is a network of many small nodes in which there are a number of sensor/actor. The sensor/actor has intense interaction with the physics environment. It receives the information of the environment through the sensors and then reacts through the actors. The relation between the nodes is wireless. Each node works independently and without the interference of human and is usually small with limitations in the processing power, memory capacity, power supply, etc. The main task of a wireless sensor network is gathering information from the under covered area. These information are gathered by the sensors and are transferred based on the routine algorithms to the sink. The sensors in the sensor wireless networks have limitations such as energy and computational power. We explain a general review of the mobile sink hierarchal routing protocols in the wireless sensor networks and then compare each of these methods.