US Patent 11093434 Communication system and operation method

A communication system includes a physical layer circuit, a link layer circuit, a transport layer circuit, and a memory circuit. The physical layer circuit is coupled to a first storage circuit. The link layer circuit is coupled to the physical layer circuit. The transport layer circuit is coupled to a second storage circuit. The memory circuit is coupled between the link layer circuit and the transport layer circuit. The memory circuit includes a memory. The memory is controlled to selectively transmit data in the second storage circuit to the first storage circuit, or transmit data in the first storage circuit to the second storage circuit.