Li J.,Beijing Railway Bureau |
Liu Z.,Beijing Jiaotong University |
Wang Z.,Beijing Communication Section |
Yang W.,Beijing Communication Section |
And 3 more authors.
Beijing Jiaotong Daxue Xuebao/Journal of Beijing Jiaotong University | Year: 2011
Considering a case of call drop happened when switching between two cells in GSM-R network of Shi-Tai passenger dedicated railway, With several network optimization methods, such as traffic statistics analysis?drive test and dynamic test, and then investigating the handover algorithm and impacts of optical repeater station to base station receptivity, it comes to the conclusion that the reasons of the problem are as follows: The network field coverage is unconscionable; the uplink gain of optical repeater stations belonged to one cell is exceeded. By adjusting the inter-cell antenna elevation angle and the uplink gain of those optical repeater stations, the normal handover between those cells is realized and the problem of call drop is solved successfully.