Nokia-Siemens Networks and Huawei continue to educate the market, push and sell solutions which address a significant pain for mobile operators - application level signaling traffic that floods the radio and backhaul links, creating congestion and reducing quality of experience for actual data.
Huawei announced that "PCCW mobile has adopted Huawei's pioneering smartphone signaling optimization solution to further enhance its network performance and improve the mobile broadband experience for its customers. The 3GPP-Release-8 (3GPP-R8)-based smartphone signaling optimization solution can significantly reduce 3GPP-R8 smartphone signaling traffic by over 25%".
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See "PCCW mobile Pioneers Huawei's 3GPP R8 Smartphone Optimization Solution to Reduce Signaling Traffic by over 25%" - here.