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| Reference | Problem | Proposed solution/purpose | Description | Limitations |
|
| [105] | Energy consumption | A performance evaluation of SMAC in combination with OLSR, AODV, DSR and DSDV routing protocols to improve the energy efficiency of SMAC. | The routing protocols implemented in SMAC to determine the effect of routing protocol on the energy consumption of SMAC depending on the network topology and WSN application. | # Unknown reason for DSR failure in conjunction with SMAC implementation. |
| [203] | Energy efficiency and routing packet overhead | Comparative study of SMAC in AODV and AOMDV. | A comparative paper and evaluation of the impact of single path AODV and multipath AOMDV routing protocols on SMAC’s energy efficiency and routing packet overhead. | # Throughput and latency were not considered. |
| [204] | Fixed duty cycle | A comparative study is conducted for SMAC and T-MAC. | The comparative paper was based on static and dynamic sleep schedules. | # No experiments or simulations to justify the comparative paper. |
| [205] | Energy consumption | SMAC and T-MAC performance analysis is based on a static and homogeneous network scenario. | The authors deduced that energy saving depends on the duty cycle value. The higher the duty cycle value, the more energy used and the less energy saving. Hence, a duty cycle of 10% was used in their simulation and analysis. | # Delay and throughput not considered. |
| [139] | Energy consumption | A comparative paper of SMAC and T-MAC. | A comparative paper was conducted on SMAC and T-MAC to ascertain the energy consumption of the protocols in a static network for two scenarios of 25 and 49 nodes. | # Factors influencing the high energy consumption of nodes in SMAC for the two scenarios were not given. |
| [102] | Energy consumption and throughput. | Performance analysis of SMAC and other protocols. | In conjunction with LEACH, LEACH-C, MTE and static clustering protocol, SMAC is analyzed and simulated. | # Simulation results on SMAC are not clearly explained. |
| [111] | Energy consumption, throughput and latency. | Analytical model for SMAC performance in a heterogeneous scenario with different medium access priorities. | # A two-dimensional discrete-time Markov chains (DTMC) are utilized in the model. | # Energy consumption of sensor nodes in application-specific environment excluded. |
| # Performance parameters such as energy consumption, throughput, and average packet delay were modelled. | # Infinite transmissions not considered. |
| [104] | Energy consumption, throughput, delay, and PDR. | SMAC performance evaluation in energy, throughput, delay and packet delivery ratio (PDR). | It dynamically adjusted the duty cycle according to the number of nodes and traffic load. | # Implementation of SMAC in NS-3 to compare results with that of NS-2. |
| # No evaluation on traffic load variation. |
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