Research on Integrated Scheme of Train-Ground Wireless Communication in Suburban Railway

摘要

In response to the construction needs of suburban railway, a TD-LTE-based integrated scheme for suburban railway wireless communication is proposed for the CBTC compatible $ext{CTCS}2+ext{ATO}$ vehicle-mounted train operation control system studied by current scholars. In the scheme, the Wireless Network Virtualization (WNV) technique is used to trackside Physical Base Station (PBS) virtual into multiple Virtual Base Station (VSBS), to provide services for different applications, so that each application to be effectively separated during transmission, avoiding contention for frequency resources. Finally, the dynamic virtual resource allocation optimization algorithm based on ADMM is used to allocate virtual resources in a balanced manner. Simulation verification shows that the proposed wireless communication integrated bearer scheme can isolate applications between applications, effectively improve application jitter performance.