[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.

Multicast transmissions do not allow for individual receivers to acknowledge that data was received by each receiver in the network. This is not acceptable for isochronous systems that require specific levels of QoS for each device. A multimedia communications protocol supports using multicast transmissions (one-to-many) in multimedia isochronous systems. A transmitter establishes a Multi-ACKed Multicast protocol within which a group of receiving devices can acknowledge the multicast transmission during a multi-acknowledgment period.

A method for managing outbound communications for a contact center includes: detecting, by a processor associated with the contact center, a trigger for transmitting outbound messages to a customer of the contact center, determining, by the processor, a notification strategy for the customer in response to the detected trigger, identifying, by the processor, a contact group designated for the customer, initiating, by the processor, first and second conversations with respectively first and second contacts in the contact group for transmitting first and second outbound communications according to the notification strategy, monitoring, by the processor, progress of the first and second conversations, and modifying, by the processor, a state of the second conversation with the second contact based on the progress of the first conversation with the first contact.

Efficient error control techniques for TCP-based multicast networks are described. In one embodiment, for example, an apparatus may comprise at least one memory and logic for routing data at a node of a TCP multicast tree, at least a portion of the logic comprised in hardware coupled to the at least one memory, the logic to identify a data segment that has been retransmitted to the node from an adjacent upstream node, determine whether each of a plurality of adjacent downstream nodes have acknowledged at least one previous transmission of the data segment, and in response to a determination that one or more of the adjacent downstream nodes have not acknowledged at least one previous transmission of the data segment, forward the data segment to each of the one or more adjacent downstream nodes. Other embodiments are described and claimed.

According to one aspect of the present disclosure, a system includes an active network element having circuitry for executing a primary application and a transmission control protocol (TCP) module, multiple standby network elements having circuitry for executing a secondary copy of the primary application and a secondary TCP module, and a network connection coupled to one or more of the active and standby network elements, wherein the active network element and standby network elements are coupled to transfer data and acknowledgments via their respective TCP modules, and wherein the standby network elements are reconfigurable to communicate via the network connection to a peer regardless of the failure of one or two of the network elements.

[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 method for managing outbound communications for a contact center includes: detecting, by a processor associated with the contact center, a trigger for transmitting outbound messages to a customer of the contact center, determining, by the processor, a notification strategy for the customer in response to the detected trigger, identifying, by the processor, a contact group designated for the customer, initiating, by the processor, first and second conversations with respectively first and second contacts in the contact group for transmitting first and second outbound communications according to the notification strategy, monitoring, by the processor, progress of the first and second conversations, and modifying, by the processor, a state of the second conversation with the second contact based on the progress of the first conversation with the first contact.

[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 local area network (WLAN) communication method and apparatus using multiple transmission speed partitioning and cooperative transmission are disclosed. The WLAN communication method includes transmitting, by access point to the nodes, transmission time slots, partitions and internal transmission priorities using transmission time slot information, partition information and internal transmission priority information, receiving uplink packet from one node, determining whether downlink data to be transmitted to the high speed or the low speed node is present, or not in the download queue, transmitting, if present, the downlink packet to the nodes, removing downlink data from the download queue for ACK, and transmitting, if not present, transmitting ACK to the nodes.

A method for managing outbound communications for a contact center includes: detecting, by a processor associated with the contact center, a trigger for transmitting outbound messages to a customer of the contact center, determining, by the processor, a notification strategy for the customer in response to the detected trigger, identifying, by the processor, a contact group designated for the customer, initiating, by the processor, first and second conversations with respectively first and second contacts in the contact group for transmitting first and second outbound communications according to the notification strategy, monitoring, by the processor, progress of the first and second conversations, and modifying, by the processor, a state of the second conversation with the second contact based on the progress of the first conversation with the first contact.