[Object] To provide a communication device and a communication method which are capable of achieving both an improvement in reliability of communication in which a frame is transmitted to a plurality of destinations and effective use of wireless communication resources. [Solution] The communication device includes: a communication unit configured to perform communication of a frame. The communication unit transmits a transmission acknowledgment request frame for a transmission acknowledgment response frame including frequency allocation information specifying a transmission frequency of the transmission acknowledgment response frame, and receives the transmission acknowledgment response frame which has undergone frequency division multiplexing, on the basis of the frequency allocation information.

Delivery destination designation information, pertaining to a multicast address to which per-multicast-address delivery is requested by a communication terminal connected to a receiving station, is transmitted from the receiving station to a transmitting station, the transmitting station generates a multicast delivery destination table, in which a multicast address to which the delivery is requested from the communication terminal is associated to the communication terminal, from the delivery destination designation information received from a plurality receiving stations, and the transmitting station refers to the multicast delivery destination table when performing multicast transmission via a satellite.

[Object] To provide a communication device and a communication method which are capable of achieving both an improvement in reliability of communication in which a frame is transmitted to a plurality of destinations and effective use of wireless communication resources. [Solution] The communication device includes: a communication unit configured to perform communication of a frame. The communication unit transmits a transmission acknowledgment request frame for a transmission acknowledgment response frame including frequency allocation information specifying a transmission frequency of the transmission acknowledgment response frame, and receives the transmission acknowledgment response frame which has undergone frequency division multiplexing, on the basis of the frequency allocation information.

A client device is configured to: receive a list of multicast channels from a multicast controller, the list of multicast channels identifying multicast channels to be multicast to a plurality of clients in the access network; receive an updated list of multicast channels from the multicast controller; identify differences between the list of multicast channels and the updated list of multicast channels; and inform the termination node of differences between the list of multicast channels and the updated list of multicast channels.

Examples can include buffering techniques for transmission control protocol (TCP) based multicast networks. Various devices in the multicast network can include buffering features to behave as a proxy for the source server, thereby splitting the network into multiple subdomains. Each subdomain could therefore independently provide error control for the TCP-based multicast network.

[Object] To provide a communication device and a communication method which are capable of achieving both an improvement in reliability of communication in which a frame is transmitted to a plurality of destinations and effective use of wireless communication resources.

[Solution] The communication device includes: a communication unit configured to perform communication of a frame. The communication unit transmits a transmission acknowledgment request frame for a transmission acknowledgment response frame including frequency allocation information specifying a transmission frequency of the transmission acknowledgment response frame, and receives the transmission acknowledgment response frame which has undergone frequency division multiplexing, on the basis of the frequency allocation information.

[Object] To provide a communication device and a communication method which are capable of achieving both an improvement in reliability of communication in which a frame is transmitted to a plurality of destinations and effective use of wireless communication resources.

[Solution] The communication device includes: a communication unit configured to perform communication of a frame. The communication unit transmits a transmission acknowledgment request frame for a transmission acknowledgment response frame including frequency allocation information specifying a transmission frequency of the transmission acknowledgment response frame, and receives the transmission acknowledgment response frame which has undergone frequency division multiplexing, on the basis of the frequency allocation information.

A wireless network system for providing reliable transmission over a wireless network includes a multicast stream source including a modifier and a plurality of multicast stream recipients in communication with the multicast stream source with each of the plurality of multicast stream recipients including an outgoing library.

The present application provides a method and an apparatus for floor control of an intra-group point-to-multipoint communication service, and a medium. The method includes: receiving a group call request sent by a first group terminal device in a target group, where the group call request includes identification information of the target group; determining, according to the identification information of the target group and a mapping relationship established in advance between identification information of each group and identification information of a terminal device with a control right, a terminal device with the control right corresponding to the target group; sending identification information of the terminal device with the control right to other group terminal devices in the target group; sending the identification information of the target group and a control right role indication to the terminal device with the control right.