GTP-U Protocol Optimization

Technical Explanation

Every user plane packet transmitted between base stations and the UPF carries a 40-byte GTP-U and IP tunnel header. For small IoT sensor reports containing only 20 bytes of data, the protocol overhead exceeds 200%. Rel-18 GTP-U Optimization implements tunnel header compression and packet bundling, saving millions of dollars in backhaul transport costs.

Key Functions

• Compresses repetitive 40-byte GTP-U tunneling headers across core transport links
• Bundles multiple small IoT sensor packets into unified transport frames
• Reduces cellular backhaul bandwidth consumption by up to 20% in high-density IoT sectors
• Accelerates packet processing throughput on cloud-native User Plane Functions (UPF)