EP1094647A2
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EP
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Buffer management for mobile internet protocol
Assignee: Nortel Networks Ltd
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Filing: 2000-10-18
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Granted: —
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Expires: 2020-10-18
Abstract
Abstract Disclosed is a buffer management method for a mobile node in a mobile IP telecommunication network. The buffer management method supports a handoff of the mobile node from a first agent of a first network to a second agent of a second network. The method begins upon initiation of the handoff. A first message is sent to the first agent requesting the first agent to buffer any packets being sent to the mobile node. While the buffering is being performed, the handoff may be completed to the second agent. Once the handoff is complete, a second message can be sent to the first agent requesting the first agent to forward the buffered packets to the second agent. <IMAGE>
Inventors
- 👤 Mohamed Khalil
- 👤 Emad A. Qaddoura
- 👤 Haseeb Akhtar
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 00:58
CPC Classifications
H; H04; H04L; H04L9/00; H04L9/40; H04W; H04W36/00; H04W36/02; H04W36/023; H04W36/0235
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
88 words
A method for supporting a handoff of a mobile node from a first agent
of a first network to a second agent of a second network, the method
comprising the steps of: upon initiation of the handoff, sending a first message to the first agent
requesting the first agent to buffer any packets being sent to the mobile node; completing the handoff to the second agent; and sending a second message to the first agent requesting the first agent
to forward the buffered packets to the second agent.
Claim 2
Dependent Claim
20 words
The method of claim 1, wherein the first message is part of a
registration request protocol to the second agent.
Claim 3
Dependent Claim
27 words
The method of claim 1 or 2, wherein the second message is also part
of the registration request protocol, occurring after the second agent has been
authorized.
Claim 4
Independent Claim
17 words
The method of any preceding claim, wherein the first and second
networks are mobile internet protocol networks.
Claim 5
Independent Claim
18 words
The method of any preceding claim, wherein the second agent is a
foreign agent to the mobile node.
Claim 6
Independent Claim
18 words
The method of any preceding claim, wherein the mobile node sends
the first message to the first agent.
Claim 7
Independent Claim
21 words
The method of any of claims 1 to 5, wherein the second agent sends
the first message to the first agent.
Claim 8
Independent Claim
17 words
The method of any preceding claim, further comprising: sending, by the mobile node, a buffer control request.
Claim 9
Dependent Claim
21 words
The method of claim 8, further comprising: sending an indicator to the second agent that the mobile node has
requested buffering.
Claim 10
Independent Claim
17 words
The method of any preceding claim, wherein the first message includes
an indicator of a buffer size.
Claim 11
Independent Claim
24 words
The method of any preceding claim, further comprising: discarding, by the first agent, predetermined packets when a maximum
number of packets have been received.
Claim 12
Independent Claim
17 words
The method of any preceding claim, further comprising: signaling the first agent to delete the buffered packets.
Claim 13
Dependent Claim
18 words
The method of claim 12, further comprising: signaling forwarding any packets received after the buffered packets
are deleted.
Claim 14
Independent Claim
23 words
The method of any preceding claim, wherein the first message includes
an indicator of a maximum length of time that buffering is needed.
Claim 15
Independent Claim
18 words
The method of any preceding claim, wherein the first message
includes an indicator of authenticity for the buffering.
Claim 16
Independent Claim
25 words
The method of any preceding claim, wherein the first message includes
an IP fitter to identify certain packets that do not need to be buffered.
Claim 17
Independent Claim
15 words
The method of any preceding claim, wherein the first agent is an old
servicing node.
Claim 18
Dependent Claim
20 words
A computer program element comprising computer program code
means arranged to support implementation of the steps of any preceding
claim.
Claim 19
Dependent Claim
13 words
The computer program element of claim 18, embodied on a computer
readable medium.
Claim 20
Independent Claim
91 words
A system for supporting a handoff of a mobile node from a first agent of
a first network to a second agent of a second network ,the system comprising: means for sending, upon initiation of the handoff, a first message to the
first agent requesting the first agent to buffer any packets being sent to the
mobile node; means for completing the handoff to the second agent; and means for sending a second message to the first agent requesting the
first agent to forward the buffered packets to the second agent.
Claim 21
Dependent Claim
27 words
A modulated communication signal comprising a plurality of
message portions arranged to support the first message and the second
message of any of claims 1 to 17.
References Cited (Backward Citations)
No citation records indexed.
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