Introduction

The mobile data has grown tremendously during the last few years. The growth has been enabled by HSPA technology with more than 1 billion subscribers by end‐2013. This chapter gives an overview of HSPA standardization schedule, data rate and latency evolution, global frequency variants, typical device capabilities, traffic growth, signalling growth and latency evolution. The main HSPA optimization areas are summarized including uplink interference management and spectrum refarming.