Mission Critical Communication (MCC) Solution Market Size, By Product Type (Hardware, Software, Service), By Application (Public Safety and Government Agencies, Transportation, Energy and Utilities, Mining, Others), By Key Players (Motorola Solutions, Inc., Nokia, ZTE Corporation, Telefonaktiebolaget LM Ericsson, Huawei Technologies Co. Ltd, AT&T Inc., Harris Corporation, Hytera Communication Corp Ltd, Cobham Wireless, Ascom, Mentura Group OY, Leonardo SpA, Inmarsat PLC, Zenitel, Telstra, Softil), By Regional Outlook And Competitive Landscape