| 摘要 |
In a wireless base station device 200, a PDCP buffer unit 240 temporarily stores data sent from a core network device 300 for the purpose of sending the data to a mobile station device 100. A data measurement unit 231 measures the volume of data stored in a PDCP buffer unit 240. On the basis of a measurement value of the data volume measured by the data measurement unit 231, the congestion state determination unit 232 determines whether or not the PDCP buffer unit 240 is in a congestion state. In the core network device 300, a sending data storage unit 340 stores data to be sent to the wireless base station device 200. On the basis of a result of the determination by the congestion state determination unit 232, a transmission/reception unit 220 sends the data stored in the sending data storage unit 340 to the wireless base station device 200. In this way, loss of data communicated between the communication devices is reduced. |
