Recently, the acceptance results of the IEEE International Conference on Computer Communications (INFOCOM 2024) were announced. The thesis "Accelerating Handover in Mobile Satellite Network" by Dr. Jiasheng Wu and Master Shaojie Su was accepted.
The construction of Low Earth Orbit satellite constellations has recently spurred a tremendous attention from both acamedia and industry. 5G and 6G standards have specified LEO satellite network as a key component of 5G and 6G networks. However, ground terminals experience frequent, high-latency handover incurred by satellites’ fast travelling speed, which deteriorates the performance of latency-sensitive applications. To address this challenge, thesis propose a novel handover flowchart for mobile satellite network which can considerably reduce the handover latency. The innovation behind this scheme is to mitigate the interaction between the access and core networks that occupies the majority of time overhead, by leveraging the predictable travelling trajectory and spatial distribution inherent in mobile satellite network.
Specifically, thesis design a fine-grained synchronized algorithm to address the synchronization problem due to the lack of control signaling delivery between the access and core networks. Moreover, thesis minimize the computational complexity of the core network using information such as the satellite access strategy and unique spatial distribution, which is caused by frequent prediction operation. thesis have built a prototype for mobile satellite network using modified Open5GS and UERANSIM, which is driven by real LEO satellite constellations (e.g., Starlink and Kuiper). Thesis have conducted extensive experiments and results demonstrate that our proposed handover scheme can considerably reduce the handover latency by 10× compared to the standard NTN handover scheme and two other existing handover schemes.
INFOCOM is the flagship IEEE conference in the field of communication networks and is also A CCF Class A conference. A total of 1,307 papers were submitted and 256 were accepted, with a recruitment rate of 19.6%.