| US 7,366,096 B2 | ||
| System and method for movement detection and congestion response for transport layer protocol | ||
| Yogesh Prem Swami, Irving, Tex. (US) | ||
| Assigned to Nokia Corporation, Espoo (Finland) | ||
| Filed on Feb. 21, 2003, as Appl. No. 10/371,965. | ||
| Prior Publication US 2004/0165538 A1, Aug. 26, 2004 | ||
| Int. Cl. H04J 1/16 (2006.01) | ||
| U.S. Cl. 370—231 [370/230; 370/235] | 22 Claims |
| 1. A method for determining network capacity and managing network congestion in response to a change in an end-to-end communication
path between a sender host and a receiver host, the method comprising:
receiving at the sender host a receiver mobility notification from the receiver host by receiving a mobility flag in a header
field of segments sent from the receiver host to the sender host, wherein receiving a mobility flag comprises receiving a
mobility bit having a first state indicating no movement from a first subnet to a second subnet and a second state indicating
movement from the first subnet to the second subnet;
determining at the sender host whether the receiver host has moved from a first subnet to a second subnet using the receiver
mobility notification; and
resetting a congestion state at the sender host to correspond to a new end-to-end communication path between the sender host
and the receiver host in the second subnet, if the sender host determines that the receiver host has moved from the first
subnet to the second subnet; and
receiving the mobility bit in the first state if the receiver host further moves from the second subnet to one of a third
subnet or the first subnet.
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