Abstract: A transmission apparatus includes: a memory; a processor coupled to the memory, wherein the processor: generates a frame including an input packet; performs, on the frame, a coding process regarding an error correction and depending on whether the packet includes significant data; and transmits the frame subjected to the coding process.

Abstract: A transmission device includes: a calculation unit to detect abnormal traffic based on a traffic volume collected for the route and to calculate a traffic increase/decrease time and a traffic increase/decrease volume of the abnormal traffic; a normal prediction graph generation unit to generate a normal prediction graph based on the traffic volume in normal time in which the abnormal traffic is not detected; a prediction graph generation unit to generate an abnormal prediction graph based on the traffic increase/decrease time and the traffic increase/decrease volume of the abnormal traffic in detection of the abnormal traffic; an order determination unit to determine a line order that is a priority order of line allocation for the route based on the normal prediction graph or the abnormal prediction graph; and an optimization unit to determine lines that are to be allocated to the route based on the line order.

Abstract: A first route and a second route different from the first route are established between first and second nodes in a transmission system including a measuring unit and a computation unit. The measuring unit measures a first signal-transmission time indicating a time taken for a signal to be transmitted in a route starting from the first node and returning to the first node after passing through the first route, the second node, and the second route, and a second signal-transmission time indicating a time taken for a signal to be transmitted in a round-trip route of one of the first and second routes. The computation unit calculates, based on a measurement result of the measuring unit, a transmission time difference indicating a difference between transmission times of a signal transmitted through the first route and a signal transmitted through the second route in a transmission direction of the first signal.

Abstract: In a control apparatus, to control operations with a first base station forming a first radio section and a second base station forming a second radio section which is overlaid with the first radio section and has relatively lower transmission power, a connection change determination unit determines whether to perform connection in response to a connection destination change request from a mobile terminal, a measurement unit measures communication conditions from the first or second base station about all mobile terminals existing in the first radio section, a change value determination unit determines a change value of transmission power of the second base station, a prediction unit predicts communication conditions after transmission power of the second base station is changed based on the change value, and a power change unit changes transmission power of the second base station based on the change value.

Abstract: A transmission device includes: a calculation unit to detect abnormal traffic based on a traffic volume collected for the route and to calculate a traffic increase/decrease time and a traffic increase/decrease volume of the abnormal traffic; a normal prediction graph generation unit to generate a normal prediction graph based on the traffic volume in normal time in which the abnormal traffic is not detected; a prediction graph generation unit to generate an abnormal prediction graph based on the traffic increase/decrease time and the traffic increase/decrease volume of the abnormal traffic in detection of the abnormal traffic; an order determination unit to determine a line order that is a priority order of line allocation for the route based on the normal prediction graph or the abnormal prediction graph; and an optimization unit to determine lines that are to be allocated to the route based on the line order.