Network Device Managing Data Flow Transmission Rate

The network device acts as an intermediary between the transmitting terminal and receiving terminal. It receives data packets from the transmitting terminal, selectively sends them through different access networks to the receiving terminal, and generates nominal reception acknowledgement messages to return to the transmitting terminal. This intermediary role allows the system to maintain multiple network connections for improved transmission rate while the network device manages the complexity of packet ordering and acknowledgement generation, ensuring accurate transmission rate calculation at the transmitting terminal.

The network device performs preliminary actions by generating and sending nominal reception acknowledgement messages before the receiving terminal actually processes and sends its own acknowledgements. By anticipating the need for acknowledgements and providing them in advance through the nominal mechanism, the transmitting terminal receives timely feedback to continue sending data packets without waiting for potential delays from the receiving terminal's packet ordering verification process.

The network device performs multiple functions: it acts as a packet router selecting from multiple access networks, a packet buffer managing transmission timing, and an acknowledgement generator creating nominal reception acknowledgements. By consolidating these diverse functions into a single network device, the system achieves accurate transmission rate determination through nominal acknowledgements without distributing complexity across multiple separate components, thereby managing overall system complexity while maintaining measurement precision.