Press Release

October 22, 2015

Ecrio Receives Fundamental Patent for native RCS Client Architecture

Patent Covers the Distribution of IMS Applications across Modem and Application Processors

Cupertino, October 22nd 2015 – Ecrio, the leading provider of LTE real time communications client software, announced today the issuance of patent US 9,152,478 by the USPTO on October 6, 2015 covering the deployment of native Rich Communications Services (RCS) clients with a single IP Multimedia Subsystem (IMS) stack. Ecrio was granted intellectual property rights pertaining to the distribution of RCS functions across application and modem processors with a single IMS stack. RCS, defined by the GSM association, include IMS based core functions such as Voice & Video over LTE (VoLTE, ViLTE) and multimedia IP Messaging targeting a variety of end user services. To date, the VoLTE framework has been embedded in the Modem Processor, leaving other RCS functions to be implemented as separate applications running on the Application Processor with separate dedicated IMS stacks. Such multiple IMS stack implementations result in higher costs, IMS stack fragmentation, higher power consumption and longer time to market. Ecrio’s patented method (FlexIMSTM) enables chipset vendors and handset vendors to deploy RCS clients without the need for multiple IMS stacks and associated issues. This method of designing RCS solutions is applicable for clients on Primary Devices (i.e. LTE Smart Phones) as well as Secondary Devices (i.e. Tablets, PCs and CPEs).

“We are pleased that the USPTO recognized our FlexIMSTM architecture as a uniquely differentiated technology,” said Michel Gannage, Founder and CEO of Ecrio. “Enriched calling and messaging capabilities built on a single IMS stack is ideal for RCS Clients applicable across the spectrum of envisioned device types.”

About Ecrio

Ecrio is the leading supplier of 4G/LTE real time communications client software for the mobile industry. Ecrio offers a comprehensive suite of standards compliant (3GPP, GSMA) Communications Client Solutions including Messaging Solutions (SMS over LTE), Rich Communication Services Solutions (RCS 5.x), Voice Solutions (IR.92 VoLTE – Voice over LTE), Video Solutions (Video Sharing and IR.94 Video Calling) and WiFi Calling (IR.51). Built on the patented FlexIMSTM Architecture, Ecrio’s Mobile Communications Client Suite (MCCS) functionalities can be distributed across the Baseband Processor and the Application Processor, yielding optimal media latency and lower power consumption. The MCCS has been deployed on more than 50 million handsets.  Ecrio’s customers include industry leading operators such as Motorola Solutions, NTT DOCOMO, SK Telecom and Verizon Wireless, and leading device and chipset platform providers. For more information, please visit

FlexIMSTM is a trademark of Ecrio Inc.