Abstract: A communication device functioning as a base station in a communication network comprises: receiving means for receiving, from a node that relays communication between the communication device and a user equipment, first information regarding a path between the node and the communication device and second information regarding a status of the node; determining means for determining a type of network slice supported by the node, based on the first information and the second information; and informing means for informing the node of the determined type of network slice.

Abstract: A DMA (Direct Memory Access) transfer apparatus acquires information including a transfer source address and a transfer destination address based on a received transfer instruction, selects whether to perform first checksum calculation for data from an area of a memory corresponding to the transfer source address or perform second checksum calculation different from the first checksum calculation, and transfers data obtained via the checksum calculation selected in the selecting to an area of the memory corresponding to the transfer destination address.

Abstract: A DMA (Direct Memory Access) transfer apparatus acquires information including a transfer source address and a transfer destination address based on a received transfer instruction, selects whether to perform first checksum calculation for data from an area of a memory corresponding to the transfer source address or perform second checksum calculation different from the first checksum calculation, and transfers data obtained via the checksum calculation selected in the selecting to an area of the memory corresponding to the transfer destination address.

Abstract: A DMA (Direct Memory Access) transfer apparatus acquires information including a transfer source address and a transfer destination address based on a received transfer instruction, selects whether to perform first checksum calculation for data from an area of a memory corresponding to the transfer source address or perform second checksum calculation different from the first checksum calculation, and transfers data obtained via the checksum calculation selected in the selecting to an area of the memory corresponding to the transfer destination address.

Abstract: A DMA (Direct Memory Access) transfer apparatus acquires information including a transfer source address and a transfer destination address based on a received transfer instruction, selects whether to perform first checksum calculation for data from an area of a memory corresponding to the transfer source address or perform second checksum calculation different from the first checksum calculation, and transfers data obtained via the checksum calculation selected in the selecting to an area of the memory corresponding to the transfer destination address.

Abstract: A control apparatus that controls the communication period length of a signal transmitted by radio obtains the first radio quality regarding the first signal and the second radio quality regarding the second signal when spatially separating and transmitting the first signal and the second signal in parallel. The apparatus determines whether the first radio quality satisfies the first level for transmitting the first signal in the first communication period length and whether the second radio quality satisfies the second level for transmitting the second signal in the second communication period length. In a case where the first radio quality does not satisfy the first level or the second radio quality does not satisfy the second level, the apparatus extends the communication period length of a signal having a smaller communication period length.

Abstract: A control apparatus that controls the communication period length of a signal transmitted by radio obtains the first radio quality regarding the first signal and the second radio quality regarding the second signal when spatially separating and transmitting the first signal and the second signal in parallel. The apparatus determines whether the first radio quality satisfies the first level for transmitting the first signal in the first communication period length and whether the second radio quality satisfies the second level for transmitting the second signal in the second communication period length. In a case where the first radio quality does not satisfy the first level or the second radio quality does not satisfy the second level, the apparatus extends the communication period length of a signal having a smaller communication period length.

Abstract: A communication apparatus acquires a delay profile for a first transmit signal from a transmitting apparatus and determines an end time at which to end detection of a second transmit signal from the transmitting apparatus, based on the delay profile.

Abstract: A plurality of control stations supervise respective ones of different networks and multiple nodes belonging to each network perform redundant transmission of data. The number of communication paths for which the qualities of communication links between the nodes belonging to the network are greater than a threshold value are calculated as the number of active paths of each of the nodes belonging to each network, and it is determined whether the calculated number of active paths of each node in each network is equal to or greater than a predetermined redundancy. In case of existence of a node for which the number of active paths is less than the predetermined redundancy, then the node is moved between the network in which the node exists and another network.

Abstract: More than one communication device that is to simultaneously transmit identical data through multiple data transmissions using different radio wave multiplex types is determined based on the link qualities of a plurality of communication devices. Then the multiple data transmissions are made by transmitting the identical data with synchronized timings at the determined communication apparatuses. The link qualities are determined by measuring received signal intensities, bit error rates, or frame error rates at the respective communication devices at the time of the multiple data transmissions using two radio wave multiplex types orthogonal to each other.

Abstract: A control apparatus of a communication system that uses a plurality of communication paths from a transmission node to a reception node to redundantly transmit data is provided. The apparatus comprises: a setting unit for setting priorities to a plurality of partial data; a calculation unit for calculating the time slot number which is required to transmit the partial data on the communication paths; a selection unit for selecting one or more combinations of the partial data and the communication path. The selection unit selects the one or more combinations in descending order of the priorities of the partial data and selects the one or more combinations in ascending order of the required time slot number if the priorities of the partial data are equal.

Abstract: A plurality of control stations supervise respective ones of different networks and multiple nodes belonging to each network perform redundant transmission of data. The number of communication paths for which the qualities of communication links between the nodes belonging to the network are greater than a threshold value are calculated as the number of active paths of each of the nodes belonging to each network, and it is determined whether the calculated number of active paths of each node in each network is equal to or greater than a predetermined redundancy. In case of existence of a node for which the number of active paths is less than the predetermined redundancy, then the node is moved between the network in which the node exists and another network.

Abstract: A control apparatus of a communication system that uses a plurality of communication paths from a transmission node to a reception node to redundantly transmit data is provided. The apparatus comprises: a setting unit for setting priorities to a plurality of partial data; a calculation unit for calculating the time slot number which is required to transmit the partial data on the communication paths; a selection unit for selecting one or more combinations of the partial data and the communication path. The selection unit selects the one or more combinations in descending order of the priorities of the partial data and selects the one or more combinations in ascending order of the required time slot number if the priorities of the partial data are equal.

Abstract: More than one communication device that is to simultaneously transmit identical data through multiple data transmissions using different radio wave multiplex types is determined based on the link qualities of a plurality of communication devices. Then the multiple data transmissions are made by transmitting the identical data with synchronized timings at the determined communication apparatuses. The link qualities are determined by measuring received signal intensities, bit error rates, or frame error rates at the respective communication devices at the time of the multiple data transmissions using two radio wave multiplex types orthogonal to each other.