Transmission control protocol handoff notification system and method
First Claim
1. A method implemented by a wireless network for a TCP (transmission control protocol) connection between a transmitting host and a wireless receiving host served by the wireless network, the method comprising:
- the wireless network determining when the wireless receiving host is in handoff;
the wireless network determining when the wireless receiving host is no longer in handoff;
the wireless network notifying the transmitting host when the wireless receiving host is in handoff and when the wireless receiving host is no longer in handoff.
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Accused Products
Abstract
The present invention provides a transfer control protocol handoff notification (TCPHN) mechanism for a wireless network by which hosts connected through the wireless network via a transfer control protocol (TCP) connection can be notified in the event a handoff occurs. The TCPHN mechanism allows hosts connected in TCP to avoid TCP timeouts and reduce any adverse effect on transmission performance. The TCPHN mechanism of the present invention can be used in relation to any TCP connection between any transmitting and receiving host where at least one of the transmitting and receiving hosts is mobile and subject to handoffs. In one embodiment for example, the TCPHN mechanism is used in relation to a TCP connection between a mobile host in a wireless network and a non-mobile server host in a connecting Internet protocol (IP) network.
71 Citations
23 Claims
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1. A method implemented by a wireless network for a TCP (transmission control protocol) connection between a transmitting host and a wireless receiving host served by the wireless network, the method comprising:
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the wireless network determining when the wireless receiving host is in handoff;
the wireless network determining when the wireless receiving host is no longer in handoff;
the wireless network notifying the transmitting host when the wireless receiving host is in handoff and when the wireless receiving host is no longer in handoff. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method implemented by a transmitting host for a TCP connection between the transmitting host and a wireless receiving host served by a wireless network, the method comprising:
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the transmitting host receiving notifications of when the wireless receiving host is in handoff and when the wireless receiving host is no longer in handoff;
the transmitting host behaving in a first manner while the wireless receiving host is not in handoff;
the transmitting host behaving in a second manner while the wireless receiving host is in handoff. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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23. An apparatus adapted to be an intermediary in a TCP connection between a transmitting host and a wireless receiving host, the apparatus comprising:
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means for determining when the wireless receiving host is in handoff;
means for determining when the wireless receiving host is no longer in handoff;
means for notifying the transmitting host when the wireless receiving host is in handoff and when the wireless receiving host is no longer in handoff.
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Specification