Multiplex communications – Data flow congestion prevention or control – Flow control of data transmission through a network
Reexamination Certificate
2002-09-04
2008-08-19
Ngo, Ricky (Department: 2616)
Multiplex communications
Data flow congestion prevention or control
Flow control of data transmission through a network
C370S394000
Reexamination Certificate
active
07414974
ABSTRACT:
A transmission control apparatus of the present invention includes a reliable service unit for providing reliable peer-to-peer data communication at layer 2 of a TCP/IP stack, and a setup unit for setting the reliable service unit. The reliable service unit includes a fragmentation part for fragmenting a service data unit (SDU) from an upper layer into protocol data units (PDUs) of a predetermined length, a sending buffer for temporarily storing the PDUs from the fragmentation part, a receiving buffer for temporarily storing PDUs received through a communication channel, a reassemble part for assembling the PDUs stored in the receiving buffer to a SDU of the upper layer, a poller for controlling data transmission/reception by checking network conditions, and a control unit for controlling at least one of the fragmentation part, sending buffer, receiving buffer, reassemble part, and poller. A transmission control method of the present invention includes initializing reliable peer-to-peer data communication at layer 2 of a TCP/IP stack, registering ports of the transmission control apparatus and devices to be connected to the ports, determining whether there is an upper layer SDU to be sent, transmitting the upper layer SDU, determining whether there are lower layer PDUs to be received when no upper layer SDU exists to be transmitted, and receiving the lower layer PDU if there are lower layer PDUs to be received.
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patent: 2003/0174662 (2003-09-01), Malkamaki
patent: 2000-0024947 (2000-05-01), None
English Translation of a Chinese Office Action is enclosed for the Examiner's information. Date of Action: Apr. 2, 2004.
Ked & Associates LLP
LG Electronics Inc.
Ngo Ricky
Patel Chandrahas
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