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Ensuring Seamless Connectivity Across 3G WWAN, Wi-Fi, and WiMAX Networks

This document explores a mixed-network client use case featuring 3G WWAN, Wi-Fi, and WiMAX technologies. It details the operational states of these networks, illustrating how devices can switch between them based on connectivity needs and battery levels. Key features include maintaining session continuity as users move through various zones, managing low battery scenarios, and maintaining call and service continuity using standards like SIP and IMS. The focus is on ensuring a stable user experience across diverse network environments.

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Ensuring Seamless Connectivity Across 3G WWAN, Wi-Fi, and WiMAX Networks

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  1. Radio State Radio State Radio State Radio State 3G WWAN 3G WWAN 3G WWAN 3G WWAN Wi-Fi Wi-Fi Wi-Fi Wi-Fi WiMAX WiMAX WiMAX WiMAX GPS GPS GPS GPS Radio State Radio State Radio State 3G WWAN 3G WWAN 3G WWAN Wi-Fi Wi-Fi Wi-Fi WiMAX WiMAX WiMAX GPS GPS GPS MxN – Mixed-Network Client Use Case 3G WWAN Operating on 3G WWAN Zone 1 Zone 2 Zone 3 Plug into power jack Wakeup Wi-Fi Continue over Wi-Fi Wakeup Wi-Fi Zone 6 Zone 5 Zone 4 Airport Wi-Fi Link Going Down. Connect to Wi-Fi Home Continue session on 3G WWAN Continue session on Wi-Fi Battery level low Shutdown WiMAX Switch to 3G WWAN Operator initiated switch to WiMAX Continue session on WiMAX Shutdown Wi-Fi WiMAX WiMAX Zone 7 Zone 8 Zone 9 VCC, SIP, IMS for Call Continuity (3G WWAN  Wi-Fi) 802.21, SIP, IMS for Service Continuity (Wi-Fi  WiMAX) IEEE 802.21, SIP, VCC, IMS, for Network Selection and Service Continuity across multiple radios (3G WWAN  Wi-Fi  WiMAX) IEEE 802.21 for Network Discovery

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