Design And Implementation Of MAC Layer SOPC Platform And Protocol Software In Relay Subsystem

After ten years of development, current mobile communication system has made full use of the lower frequency band which is less than 6GHz. To meet the demand of future mobile communication, resolve the conflict between speed, capacity and spectrum resource, frequency band 6-15GHz should be used. There are many benefits and also many challenges. Now, our country has begun to carry out the research work in this field.This thesis is mainly based on the National 863 Project "Develop and Demonstrate of High Frequency Band Wireless Communication System". The main research point is the MAC layer of the relay subsystem. The solution about hardware SOPC platform, system software and protocol software is provided. The main contents of this thesis are described as below.MAC layer functions under relay mode are summarized and analyzed.The development method of MAC layer SOPC platform is given, including key technology analysis, hardware equipment selection and detailed development of every system module. This platform should be high performance and high stability. The test method is also provided, especially the memory test.Summarize and analyze the BSP and device driver development method. The real-time, high reliability and efficiency operating system is migrated to the hardware platform. The IDE and BSP document structure are analyzed and the driver source code is given. The migration of Vx Works is very important to the MAC protocol software. Design and implement the MAC layer protocol which support relay. The protocol can switch between relay mode and direct mode, adapt itself to speed change of the data source. The protocol is divided into several functions parts, provide ARQ, and define the data flow direction and data format. The MAC protocol implemented by the C programming language is also one of the main contents.The work in this thesis includes the whole process of platform build, protocol design, development and debug for communication system. They are specifically applicable in the project which is fundamental in the further researches and developments. This thesis has certain referential values in future protocol design and the development for high frequency band wireless communication systems.