Optimizating Sporadic Data Transmission for mMTC in 5G Networks

In response to the explosive growth of massive Machine-Type Communication (mMTC) terminals in 5G networks, this paper proposes an optimization method for sporadic mMTC data transmission in 5G based on grant-free radio bearers. This method achieves efficient access and resource sharing among mMTC terminals through sharing pre-configured radio bearers. Additionally, an uplink grant-free random access mechanism is introduced to ensure that terminals are only activated for necessary data transmissions, then automatically entering a low-power sleep state. By optimizing the design of the air interface protocol stack, transmission delay and operating cost of the system are significantly reduced, and data transmission efficiency is further improved. The paper also explores the application of this method in satellite networks, demonstrating in detail its capacity to substantially reduce signaling overhead and enhance network performance for mMTC data transmission. This method has broad application prospects in 5G and satellite communication networks.