To address the vulnerability of Android terminals in mobile scenarios to single-link jitter, handover interruptions, weak coverage, and transient congestion, which can lead to message retransmissions, session interruptions, and sudden increases in latency, this paper proposes a multi-link diversity transmission reliability enhancement structure characterized by collaborative access from WiFi and cellular networks. A four-layer closed loop of "perception, decision-making, scheduling, and recovery" is created on the device side. Link quality estimation is used to prioritize packets, and redundant transmission and rapid failure rescheduling are implemented to provide differentiated protection for control messages and continuous service flows. Based on recent research on Multipath QUIC, partially reliable transmission, and mobile multi-connectivity, middleware suitable for reliability enhancement between the Android application layer and transport layer is designed, and session continuity criteria, link availability models, weighted scheduling strategies, and redundancy triggering mechanisms are presented. Comparison with real-world experimental results from published literature and Android mobile network datasets shows that combining multi-link diversity and partially reliable transmission can significantly reduce tail latency, buffer interruption time, and retransmission pressure. Research shows that improving the reliability of the Android system in complex wireless environments cannot rely solely on improving a single protocol. Instead, it should be approached from multiple angles, relying on the cooperation of various interfaces, awareness between upper and lower layers, and service level classification to achieve systematic improvement.

Junhao Su. Android Communication Reliability Enhancement Architecture Based on Multi Link Diversity Transmission. International Journal of Big Data Intelligent Technology (2026), Vol. 7, Issue 2: 31-39. https://doi.org/10.38007/IJBDIT.2026.070204.

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