Design And Implementation Of Physical Interface For TD-LTE Broadband Multimedia Cluster System

The evolution of the third generation mobile communication to the fourth generation mobile communication technology has brought the upgrade of mobile communication technology and the further broadband wireless communication technology. LTE includes two kinds of time division duplex and frequency division duplex. When the bandwidth is20 MHz, the downlink peak rate of 100 Mbps and the uplink peak value of 50 Mbps can be reached. Trunking communication system is a kind of has a special purpose, for specific user groups of mobile communication system, its scope of application including public security, logistics management, airport scheduling and other fields, the automatic channel selection and channel sharing mechanism ensures that at the time of the occurrence of unexpected events, not because of as a result of the increase in the number of users of network paralysis. TD-LTE broadband multimedia cluster system, it to the fourth generation of mobile communication technology TD-LTE technology as the core, make full use of the LTE broadband characteristics and high speed data transmission capacity, further enhanced the performance of cluster system.Topics on ”based on TD-LTE broadband mobile private network overall scheme and testing and evaluation” of major projects of national science and technology, the main goal of the project is development and validation for the 3GPP LTE R8 protocol standard and broadband multimedia cluster system protocol. This paper introduces TD-LTE broadband multimedia cluster system physical adaptation layer software module design requirements based on the physical adaptation layer software module includes a channel subsystem module, PHYADP transceiver subsystem management subsystem module and physical adapter module layer and other layers of the design are introduced. Design of the software module and the authors assume in detail; secondly, the development of physical commitment to the adaptation layer software modules in detail, including the module of PHY management system and software realization and physical layer interface software; finally, the software module development work undertaken in this paper the author on VT864 platform including parameter testing and verification of SRIO interface and SRIO interface transmission mode, and the physical layer interface, and test The function of each module is to meet the current design standards.