MEDIUM ACCESS CONTROL PROTOCOL AND CLUSTERING ALGORITHM FOR CLUSTERED WIRELESS SENSOR NETWORKS WITH HIGH ALTITUDE PLATFORMS AS THE BASE STATION
In WSN (Wireless Sensor Network), the only source of energy from each node is the battery. Communication activities between nodes consume a lot of energy because there is a processing and sending of data to the sink node or base station. Battery replacement is costly and time-consuming, so it is avo...
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| Format: | Theses |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/57232 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | In WSN (Wireless Sensor Network), the only source of energy from each node is the battery. Communication activities between nodes consume a lot of energy because there is a processing and sending of data to the sink node or base station. Battery replacement is costly and time-consuming, so it is avoided in many WSNs. Therefore, the communication process on WSN requires an efficient communication protocol that can minimize energy use. This thesis presents a Medium Access Control (MAC) protocol for clustered wireless sensor networks with High Altitude Platforms (HAPS) as the base station. To complement the proposed MAC protocol, this thesis also presents the clustering algorithm that uses three clustering weighting factors, they are ?, ?, and ?, each of which plays a role in parameter weighting in terms of remaining energy, distance, and cluster capacity, respectively. The simulated annealing optimization method is used to find the optimal value of the weighting factors ?, ?, and ? in providing lifetime until all nodes die. The proposed MAC protocol uses the concept of scheduling for intra-cluster communication. Scheduling is done based on the ratio between the distance and the remaining energy at the sensor node. In addition, the proposed MAC protocol uses four states, which are sleep, contention, back-off, and active Tx/Rx. This helps to avoid sensor nodes from idle listening, thereby saving energy. The performance of the proposed MAC Protocol is evaluated through several simulations based on lifetime and energy consumption. In addition, simulations are carried out to test how far the HAPS can shift in position and still keep all sensor nodes connected to the network. The simulation results show that the HAPS displacement tolerance of the proposed MAC protocol is better than the recommendations given by ITU-R F.1891. |
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