Performance analysis of a multi-PHY coexistence mechanism for IEEE 802.15.4g FSK network

This paper analyzes the performance of a realistic multi-PHY layer IEEE 802.15.4g Smart Utility Networks (SUN) design and proposes a coexistence approach for multi-PHY interference management. Technical details of the design such as network architecture, mechanism protocols, signal formats, device interfaces, regulatory requirements and channel characterization are implemented following the IEEE 802.15.4g SUN specification. The performance evaluation is conducted in a cross-layer computer simulation based on the MAC (medium access control) and multi-PHY technical specification in the standard with realistic application scenarios and channel characteristics. To manage the interference in the system, a Multi-PHY Management (MPM) protocol is proposed and evaluated. The MPM is adopted in the current IEEE 802.15.4g standard. As a result, the coexistence mechanism is observed to be able to improve the victim throughput performance up to 25%. It is also found that the throughput degradation in a non-beacon-enabled network is 50% worse than the degradation in a beacon-network.