H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 12/56 (2006.01) H04Q 11/04 (2006.01)
Patent
CA 2124249
A packet transmission method and apparatus prevents the holding of unavailable links daring packet transmission. An embodiment of the present invention assumes the case of a packet transmission between a transmitting terminal and a receiving terminal over a path which includes seven links and six switches. The third and fifth switches provide first and second intermediate burst servers which have a buffer for temporarily holding a message packet and a function of the packet transmission. The function comprises requesting a link reservation, transmitting a message packet, storing a received-message packet, and releasing reserved links upon completing the transmission of the message packet. When the transmitting terminal transmits a message packet, a first end burst server starts the packet transmission including the link reservation to the first intermediate burst server, and when the packet transmission is completed, reserved links between those burst servers are released. The same packet transmission is repeated consecutively to each burst server up to the receiving terminal, if the link reservations are not blocked. If a link reservation is blocked, the packet transmission is held at the latest burst server, and either another link reservation of the same bandwidth is used or the transmission is converted to use another available bandwidth.
Corporation Nec
G. Ronald Bell & Associates
LandOfFree
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