Wireless terminal device

A wireless terminal device connected to a wireless access system including a core network, comprising:

• an application section which outputs application data of an application that performs communication via the wireless access system;
• a parameter generating section which generates a parameter including a priority class of a service of the application and a used port number as a parameter of a protocol concerning a communication session in the core network in accordance with the service of the application;
• a transport layer processing section which processes the application data output from the application section and the parameter generated by the parameter generating section in accordance with a protocol of a transport layer;
• a network layer processing section which processes the data processed by the transport layer processing section in accordance with a protocol of a network layer;
• a parameter analysis section which determines a quality of service (QoS) level of the communication session that corresponds to the priority class of the parameter in accordance with a correspondence table to beforehand associate the priority class with the QoS level used in QoS control of uplink in a wireless zone of the wireless access system and which associates the determined QoS level with the port number of the parameter that includes the priority class associated with the determined QoS level in the correspondence table;
• and
• a packet classifier section which distributes a packet of the processed data by the network layer processing section to a transmission queue of the QoS level,
• wherein the packet of the processed data having the port number associated with the determined QoS level is distributed to the transmission queue of the determined QoS level.