Abstract: A transmitting device includes: a communication unit to transmit data through two or more networks including a first network and a second network; and a transmission controller to control the communication unit to transmit the data to the receiving device through the first network, and transmit the data, which is to be transmitted to the receiving device through the first network, to the receiving device in a roundabout way through the second network in response to the data roundabout transmission request state, where the transmission controller identifies whether the receiving device is in the data roundabout transmission request state, based on at least one selected from the group consisting of an available bandwidth, a connection error generation state, a predetermined delay value of receiving the data with respect to the first network.

Abstract: A terminal device includes: a signal generator to generate a traffic request signal; a policy manager to transmit a policy request signal to a policy provider, and to receive a policy answer signal corresponding to the policy request signal; a traffic transceiver to perform a download of a traffic answer signal corresponding to the traffic request signal from a content provider via a path network; a terminal network detector to detect a network status of the path network based on the policy answer signal; and a traffic control processor, at a time of the download, to determine a traffic control status based on the network status, and control the download based on the traffic control status.

Abstract: A receiving apparatus includes a communication unit to receive partial data partitioned from data transmitted from a transmitting apparatus through two or more networks and transfer network state related information based on the partial data respectively received through each of the two or more networks to the transmitting apparatus through a transmission network to be designated; and a network selection unit to designate one network among the two or more networks as the transmission network for transmitting the network state related information, based on a time of receiving each of the partial data through each of the two or more networks.

Abstract: A transmitting device includes: a communication unit to transmit data through two or more networks including a first network and a second network; and a transmission controller to control the communication unit to transmit the data to the receiving device through the first network, and transmit the data, which is to be transmitted to the receiving device through the first network, to the receiving device in a roundabout way through the second network in response to the data roundabout transmission request state, where the transmission controller identifies whether the receiving device is in the data roundabout transmission request state, based on at least one selected from the group consisting of an available bandwidth, a connection error generation state, a predetermined delay value of receiving the data with respect to the first network.

Abstract: A transmitting device includes a communication unit to transmit data through two or more networks including a first network and a second network, and a transmission controller to control the communication unit to transmit data to a receiving device through the first network, and transmit the data, which is to be transmitted to the receiving device through the first network, to the receiving device through the second network in response to a message from the receiving device indicating a data roundabout transmission request state of the receiving device with respect to the first network.

Abstract: A transmitting device includes a partial data selector to select partial data divided from data to be transmitted over each of access networks based on a data transmission rate of each of the access networks; an identification information insertion unit to respectively insert identification information for measuring a data reception time interval into two or more partial data among the partial data selected for a particular access network of the access networks; a communication unit to transmit the two or more partial data with the inserted identification information to a receiving device through the particular access network; and a controller to acquire transmission state information of the particular access network based on at least one of a data transmission time interval and a data reception time interval.

Abstract: A terminal device includes: a signal generator to generate a traffic request signal; a policy manager to transmit a policy request signal to a policy provider, and to receive a policy answer signal corresponding to the policy request signal; a traffic transceiver to perform a download of a traffic answer signal corresponding to the traffic request signal from a content provider via a path network; a terminal network detector to detect a network status of the path network based on the policy answer signal; and a traffic control processor, at a time of the download, to determine a traffic control status based on the network status, and control the download based on the traffic control status.

Abstract: A receiving apparatus includes a communication unit to receive partial data partitioned from data transmitted from a transmitting apparatus through two or more networks and transfer network state related information based on the partial data respectively received through each of the two or more networks to the transmitting apparatus through a transmission network to be designated; and a network selection unit to designate one network among the two or more networks as the transmission network for transmitting the network state related information, based on a time of receiving each of the partial data through each of the two or more networks.

Abstract: A transmitting device includes a communication unit to transmit data through two or more networks including a first network and a second network, and a transmission controller to control the communication unit to transmit data to a receiving device through the first network, and transmit the data, which is to be transmitted to the receiving device through the first network, to the receiving device through the second network in response to a message from the receiving device indicating a data roundabout transmission request state of the receiving device with respect to the first network.

Abstract: A transmitting device includes a partial data selector to select partial data divided from data to be transmitted over each of access networks based on a data transmission rate of each of the access networks; an identification information insertion unit to respectively insert identification information for measuring a data reception time interval into two or more partial data among the partial data selected for a particular access network of the access networks; a communication unit to transmit the two or more partial data with the inserted identification information to a receiving device through the particular access network; and a controller to acquire transmission state information of the particular access network based on at least one of a data transmission time interval and a data reception time interval.

Abstract: Disclosed herein is a dual processing system capable of ensuring real-time processing in a protocol conformance test. A protocol testing device performs a test on a layer under protocol test provided in a device under test. A communication device processes the protocol of a layer below the layer under protocol test between the device under test and the protocol testing device. The communication device processes a protocol test message, requiring real-time processing, instead of the protocol testing device, and transmits processing results for the protocol test message to the protocol testing device. The protocol testing device processes a protocol test message, not requiring real-time processing, and determines the conformance of the layer under protocol test provided in the device under test based on the processing results for the protocol test message.

Abstract: Disclosed herein is a dual processing system capable of ensuring real-time processing in a protocol conformance test. A protocol testing device performs a test on a layer under protocol test provided in a device under test. A communication device processes the protocol of a layer below the layer under protocol test between the device under test and the protocol testing device. The communication device processes a protocol test message, requiring real-time processing, instead of the protocol testing device, and transmits processing results for the protocol test message to the protocol testing device. The protocol testing device processes a protocol test message, not requiring real-time processing, and determines the conformance of the layer under protocol test provided in the device under test based on the processing results for the protocol test message.