Blocking performance comparison under hard handoff constraint using optimal guard channel in GSM standards
Promod Kumar Sahu, Hemanta Kumar Pati, Sateesh Kumar Pradhan · International Journal of Communication Networks and Distributed Systems · 2025
In the current mobile networks voice service in 2G coexists with voice over long term evolution (VoLTE) in 4G and voice over new radio (VoNR) in 5G. In wireless networks usually handoff call (HC)s receive higher priority than new call (NC)s. So, some radio resources may be reserved in each cell to handle HCs. If more channels are reserved for HCs, then the handoff call dropping probability (HCDP) will be decreased and at that time the new call blocking probability (NCBP) will be increased. Instead, if channels will be reserved for HCs by considering the target HCDP, then HCDP will be below the target and will incur minimum NCBP. In this paper, we proposed an optimal channel reservation (OCR) policy to reserve guard channels according to the given target HCDP. Further, we have made a comparison study of optimal blocking performances applying this OCR policy on different GSM standards.