Analysis of the impact of handover strategies on the QOS of satellite diversity based communications systems

A handover strategy in the LEO satellite constellation networks with ISLs

“…Therefore, handover strategy can be considered as the most important issue that greatly affects the system performance. There are several handover strategies for intra-and inter-satellites handovers in the literatures [5][6][7][8][9][10][11][12][13][14][15]. Handovers between different spotbeams are discussed in [13][14][15].…”

“…Handovers between different spotbeams are discussed in [13][14][15]. The mainly object in [5,9,10,11,12] is the analysis of the impact of handover strategies on the system performances, such as time propagation delay, handover frequency, call dropping probability (CDP) and elevation angle. Using some predictive characteristics in mobile satellites systems, a strategy based on user terminal position and signal strength measurement is proposed in [6], and a reliable handover rerouting protocol is proposed in [7], and the system performance metrics including the number of handover and the routing delay are discussed in [8].…”

Evaluation of the guaranteed handover algorithm in satellite constellations requiring mutual visibility

“…The paper presents a comparison among several satellite handover procedures to select the first satellite to route the call at call set-up and the next satellite at handover which call upon earlier proposals, namely [15,16]:…”

“…Finally, Section 5 concludes the topic. Table I recalls the criteria and the related procedures that can be considered for selecting the satellite requested to convey the call [15,16]. The criteria of Table I can be used either to select the first satellite, at call set-up time, or the next satellite, at call handover time.…”