Case Study: SoftBank Mobile achieves 70% signaling reduction with Ericsson Smart and Adaptive Paging

SGSN-MME Smart and Adaptive Paging functionality optimizes signaling in highly populated metropolitan areas

SoftBank Mobile, Japan, a fast-growing subsidiary of SoftBank, needed to maintain high-performance mobile broadband service as traffic rapidly shifted from WCDMA to LTE in heavily populated metropolitan areas like Tokyo. To support the rising signaling load and prepare for VoLTE, the company worked with Ericsson and its Evolved Packet Core solution, including SGSN-MME Smart and Adaptive Paging functionality.

Ericsson implemented a complete EPC solution with LTE RAN, using Smart and Adaptive Paging to optimize signaling by application type and urgency. The result was a 70% reduction in signaling, nearly 50% lower MME CPU load, and improved network stability, high availability, and performance—helping SoftBank Mobile reduce future capital investment significantly.

SoftBank Mobile

Yoichi Funabiki

Director Mobile Network Planning Division, Core Network Department