This article discusses the new problems encountered in the TD-LTE network

ie the boundary optimization problem. The TD-LTE network site of China Mobile is built nearby Yalu River in Dandong. The reference Dandong border GSM network

combined with TD-LTE network’s own characteristics

and TD-LTE network are coverage of the macro station district reached Sinuiju

North Korea along the region

using the location to accept control algorithm（such as the AOA + TA method

etc.）

through the UE distance macro station district the proximity of the site limit the Korean users access the TD-LTE network to conduct business.