US6480468B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Repeater
Assignee: Toshiba Corp
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Filing: 1998-09-17
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Granted: 2002-11-12
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Expires: 2018-09-17
Abstract
Abstract The present invention aims at making the cut-through trigger variable in accordance with the traffic environment, thereby increasing the cut-through traffic to enhance the efficiency of communication. In the trigger filtering unit ( 16 A), the number of transfers of the hop-by-hop packet meeting each of a plurality of preset trigger conditions is counted. In the processor ( 15 A), the rate of the traffic meeting each of trigger conditions to all the traffics of the hop-by-hop transfer is calculated in accordance with the count value, a trigger condition under which the rate exceeds the threshold value is selected as the cut-through trigger, and it is determined which of the cut-through transfer mode and the hop-by-hop transfer mode should be selected.
Inventors
- 👤 Tohru Kishigami
- 👤 Kazuo Nogami
- 👤 Shigeo Matsuzawa
- 👤 Kenichi Nagami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:27
CPC Classifications
H; H04; H04L; H04L12/00; H04L12/54; H04L12/56; H04L12/5601; H04L43/00; H04L45/00; H04L45/38; H04L45/40; H04L45/74; H04L45/745; H04L45/7453; H04L49/00; H04L49/25; H04L49/251; H04L49/256; H04L49/257; H04L49/60; H04L49/602; H04Q; H04Q11/00; H04Q11/04; H04Q11/0428; H04Q11/0478; H04L2012/5638; H04L2012/5665; H04L2012/5667; H04L43/08; H04L43/0876; H04L43/0894; H04L43/16; H04L49/30; H04L49/3009
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
161 words
A repeater having a hop-by-hop transfer mode in which a packet routing process is executed in a network layer and a cut-through mode in which a packet switching process is executed in a data link layer, for executing a packet routing process by selectively using the modes, comprising: traffic monitoring means for detecting a traffic of the hop-by-hop transfer meeting each of a plurality of predetermined conditions that can be cut-through triggers; condition selecting means for comparing an amount of the traffic of each of the conditions obtained by said traffic monitoring means with a predetermined threshold value, and selecting a condition under which the amount of traffic exceeds the threshold value as the cut-through trigger; and routing processing means for determining whether a received packet should be subjected to the cut-through transfer or the hop-by-hop transfer in accordance with the condition selected by said condition selecting means, and executing the routing process in accordance with a result of the determination.
Claim 2
Dependent Claim
161 words
A repeater having a hop-by-hop transfer mode in which a packet routing process is executed in a network layer and a cut-through mode in which a packet switching process is executed in a data link layer, for executing a packet routing process by selectively using the modes, comprising: traffic monitoring means for detecting a traffic of the hop-by-hop transfer meeting each of a plurality of predetermined conditions that can be cut-through triggers; condition selecting means for comparing an amount of the traffic of each of the conditions obtained by said traffic monitoring means with a predetermined threshold value, and selecting a condition under which the amount of traffic exceeds the threshold value as the cut-through trigger; and routing processing means for determining whether a received packet should be subjected to the cut-through transfer or the hop-by-hop transfer in accordance with the condition selected by said condition selecting means, and executing the routing process in accordance with a result of the determination.
Claim 3
Dependent Claim
38 words
A repeater according to claim 1 , wherein said traffic monitoring means selects a plurality of conditions as the conditions which can be the cut-through triggers and detects the traffics of the hop-by-hop transfer meeting the respective conditions.
Claim 4
Dependent Claim
95 words
A repeater according to claim 1 , wherein said traffic monitoring means has a counter for counting number of transfer traffics of hop-by-hop packet meeting each of the plurality of predetermined conditions that can be the cut-through triggers, and said condition selecting means obtains a rate of the traffic under each of the conditions to entire hop-by-hop transfer traffics in accordance with the count value of each of the conditions obtained by the counter of said traffic monitoring means, and selects a condition under which the rate exceeds the threshold value as a cut-through trigger.
Claim 5
Dependent Claim
37 words
A repeater according to claim 1 , wherein said traffic monitoring means detects the traffics, in a certain previous period, of the hop-by-hop transfer meeting each of the plurality of predetermined conditions that can be cut-through triggers.
Claim 6
Dependent Claim
66 words
A repeater according to claim 1 , wherein the traffic detection process of the said traffic monitoring means, and the cut-through transfer process and the hop-by-hop transfer process of said routing processing means are executed with hardware circuits, respectively, and the process of selecting the condition which can be the cut-through trigger by said condition selecting means is executed in the software process with a processor.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2005-11-11 | 2006-05-13 | 2006-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-11-11 | 2010-05-13 | 2010-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-11-11 | 2014-05-13 | 2014-11-12 | $7700.00 | Window Closed / Lapsed |