#R&D leader for DMR and LTE fusion communication System#Dec. 2017 – present Analog communication and DMR digital communication system are used in the railway system, widely. But the railway customer has the strong desire for broadband multimedia communication. The Emei broadband trunking system are designed to provide multimedia communication. And it is integrated with DMR system which provides a fusion communication system. The system is applied to railway, airport and other scenarios.* DMR-LTE fusion communication system *1. Emei LTE Trunking System: Lead the team designed a multimedia trunking communication system which allow transmitting the voice, message, picture, video, etc.2. DMR digital communication system. According to different scenario of railway, the company has several DMR communication systems including: flextrbo system, wireless train dispatching system, wireless area coverage system, wireless flat shunting system. 3. Fusion communication system: Developed a center switching server, which interconnects various DMR systems, and also Emei broadband trunking system. Achieve voice cross-system communication, data cross-system communication4. Analog system interconnection: Analog radio will be connected to the integrated communication system through digital-to-analog conversion* Contribution *1. R&D leader. Leading for R&D. Responsible for requirement analysis, architecture, development. 2. Key module coding.Technology: C++, java, spring boot, spring mvc, mybatis, Restful, mysql, mongo, android, node.js, docker

#R&D leader for Intelligent bullet train station of Changsha project – Wireless communication System#It’s a demonstration project of Guangzhou railway group. China Academy of Railway Sciences CO., Ltd is the general contractor, and my company is responsible for the Wireless communication system.* Intelligent bullet train station *1. DMR-LTE fusion communication system: Emei LTE Trunking System, flextrbo Digital System (DMR). Interconnection of both system and provide voice and data communication. Analog system interconnection, also.2. Job ticket dispatching, replying and warning.3. Location tracking to ensure workers are on position on time.4. Invasion waring.* Contribution *1. Support the marketing to compose solution document. Customer investigation and supporting.2. Leading for R&D. Responsible for requirement, architecture, development. Cooperation with third part engineer.3. Key module coding4. Deployment. Lead the team to setup the repeater system, install the server, configure the system, distribute the radio and smartphone. Solve the problems reported by customer.Technology: C++, java, spring boot, spring MVC, Mybatis, WebService, JMS, MYSQL, mongo, android, node.js, MFC, docker

#Radio Management System#Distributed System● All the subscribers’ parameters are stored in the DB; each subscriber may have 100K parameters● C/S mode Windows client provides full functionality. B/S client provides simple management.● Multiple Servers with specific functionality and scalability. Using SQL Server, Entity Framework.● Windows client is designed by WPF, prism framework, MVVM Patter. Communication with WCF.● Web client is designed by ASP.net MVC, bootstrap.Contribution● [2013~2015] Technical Leader. Architecture; Leading the team to design and develop; UI and user experience design; code standard defining; automatic test plan and design; code structure controlling; guide teams from different product lines.● [2016] Project Leader. Product functionality analysis, design, estimation and planning. Leading the scrum team to deliver product.Technology：C#/.net, WPF, WCF, SQL Server, Entity Framework, MVVM, Prism, USB, Ants Profiler, ASP.net MVC

# Redesign New Tetra CPS and ITM Management System #Design Goal: Common platform for multiple product lines; Improve the development efficiency；Show Chengdu site’s capability to management team.● .net WinForm GUI; XML describe the GUI；Extensible framework based on plugin.● GUI Design tool (WYSIWYG editor)。Based on java Eclipse plugin with GEF.● C/S management system based on Java. Hibernate, spring, Eclipse plugin● Decouple the platform and product line specific component; Automatic test framework; Auto generate code; Release based on packages.● Better performance for big data; better user experience.Contribution● [2006~2007] Design and architect the new platform. Technology choosing; Key component (plugin frame work, data logic layer) implementation.● [2008] Leading the team to piolet the new platform for one product line. Continuously improving the platform, verifying the feasibility, and showing the advantage.● [2009~2010] Implementing the New Tetra CPS based on the new platform. Guide the team, and keep

#ASTRO CPS#Windows Application Development● ASTRO is a very important produce of Motorola.● CPS is the windows application which used to configure the ASTRO subscribers.Contribution● Study and work in the USA site for half a year, and transfer ASTRO CPS to Chengdu R&D centerTechnology：C++, MFC

#ELT CPS#Windows Application DevelopmentTechnology：C++, MFC, COM

As the develope engineer, work for the professor's projects.- Digital TV- Embedded System Developing- C/C++Cooperating company: 1) Sichuan Cable TV network（四川广电网络） , 2) Dongyin（东银）