Research On The Handover Algorithm Of Quantum Mobile Communication

Quantum communication is an interdisciplinary field which is based on the principle of classical communication and quantum mechanics. And it is also a hot spot of the current domestic and international research in modern communication. Quantum communication has the superiority of absolute security and confidentiality. Constructing a safe, secure, flexible and efficient quantum mobile communication system by combining the advantages of quantum communication and classical mobile communication is the future development direction. However, the research on quantum mobile communication handover has not started yet.In order to solve the problem of quantum mobile communication system handover, it researches on the following handover algorithms of the quantum mobile communication system. Firstly, it comes up with the handover algorithm of quantum mobile communication based on entanglement degree computing in the same cell, and it conducted in-depth mathematical derivation of the algorithm, it demonstrates that the proposed handover algorithm of quantum mobile communication based on entanglement degree computing has a good operability and can be realized by rigorous mathematical derivation; Secondly, it comes up with the handover strategy of quantum mobile signaling based on entanglement degree computing in adjacent cells. With the change of the position of mobile users, the entanglement degree between users and base station changes constantly. It analyses the change of the process carefully, deriving the relationship between signaling entanglement degree and distance and comes up with a handover algorithm based on the threshold value of entanglement degree. The simulation results show that the proposed signaling handover strategy obtain high reliability and can realize smooth handover among base stations; thirdly, it proposes the onboard switching algorithm in low earth orbit quantum satellite communication, and it uses terminal measure-distance method to achieve onboard switching in satellite system. The theory analysis and simulation results show that the algorithm is easy to operate, strong practicability, and smooth switching between the various satellites.