Lossless switching method for inter-satellite data of low-orbit satellites

Abstract

The invention discloses a lossless switching method for inter-satellite data of low-orbit satellites, which specifically comprises the following steps that: S1, a user terminal sends a measurement report to a network controller according to the generated measurement report, S2, the network controller executes switching judgment, if switching can be carried out, S3 is executed, and if switching cannot be carried out, S4 is executed, S3, it is judged whether the target satellite resources are allowed to be switched or not, if yes, S5 is executed, and if not, S4 is executed, S4, switching is notcarried out, S4', it is judged whether the user terminal of which the signal stays on the original satellite has a switching continuing demand or not, if so, S1 is executed, and if not, the switchingaction is stopped, S5, the target satellite allocates channel resources to the allowed user terminal, and sends a switching request instruction to the terminal through the service satellite, S6, the terminal receives the switching request and sends switching success information to the target satellite, S7, the network controller immediately releases the temporary storage data and S8, switching iscompleted. The device has the advantages of being simple in structure, smooth in network access and small in loss.

Description

technical field [0001] The invention relates to the technical field of satellite communication, in particular to a method for lossless data switching between low-orbit satellites. Background technique [0002] The low-orbit satellite constellation has the characteristics of low signal delay, strong power, and seamless global coverage. With the upsurge of low-orbit satellite Internet at home and abroad, low-orbit communication satellites have developed rapidly. The problem that needs to be solved urgently is that due to the fast movement of low-orbit satellites, the large number of single-satellite beams, and the short overhead time of single-satellite and single-beam, users need to switch frequently without feeling to maintain continuous communication with good QOS (quality of service) . On the other hand, factors such as interference may also cause transmission switching. Excellent handover strategy and technology can reduce handover delay, handover frequency, improve cha...

AI Technical Summary

Problems solved by technology

The problem that needs to be solved urgently is that due to the fast movement of low-orbit satellites, the large number of single-satellite beams, and the short overhead time of single-satellite and single-beam, users need to switch frequently without feeling to maintain continuous communication with good QOS (quality of service)

On the other hand, due to factors such as interference, it will also cause the transmission to switch

Images