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US6804532B1 Expired / Lapsed US ⏱️ 0.0 years remaining

System and method for re-routing communications based on wireless communication link quality

Assignee: Cisco Technology Inc
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Filing: 2000-12-22
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Granted: 2004-10-12
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Expires: 2020-12-22
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Abstract

Abstract A method for re-routing communications based on link quality includes establishing a first wireless communication link with a mobile station. The first wireless communication link is included in a first communication path used for communications between the mobile station and a destination device. The method also includes monitoring, from the mobile station, the link quality of the first wireless link and determining, at the mobile station, that the link quality of the first communication link has decreased below a low link quality threshold. The method further includes routing, using a router at the mobile station, communications between the mobile station and the destination device to a second communication path that includes a second wireless communication link to the mobile station. The second communication path is selected by the router based on one or more metrics.

Inventors

  • 👤 Billy G. Moon
  • 👤 Malcolm M. Smith

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 23:22
CPC Classifications
H; H04; H04W; H04W36/00; H04W36/16; H04W36/18; H04L; H04L45/00; H04L45/22; H04L45/24; H04W24/00; H04W40/00; H04W40/02; H04W40/12; H04W40/34; H04W40/38; H04W76/00; H04W76/10

Claims Analysis

Total Claims: 41
Claim 1
Independent Claim 220 words
A method for re-routing communications based on link quality, comprising: establishing a first wireless communication link and a second wireless communication link with a mobile station, the first wireless communication link included in a first communication path used for communications between the mobile station and a destination device, the second wireless communication link included in a second communication path used for communications between the mobile station and the destination device; monitoring, from the mobile station, the link quality of the first wireless link; determining, at the mobile station, that the link quality of the first communication link has decreased below a low link quality threshold; using a router at the mobile station, routing communications between the mobile station and the destination device to the second communication path that includes the second wireless communication link to the mobile station, the second communication path selected by the router based on an instantaneous internetwork topology and one or more routing metrics; determining, at the mobile station, that the link quality of the first communication link has decreased below a high link quality threshold that is higher than the low link quality threshold; establishing the second wireless communication link included in the second communication path; and routing communications between the mobile station and the destination device to both the first and second communication paths.
Claim 2
Independent Claim 220 words
A method for re-routing communications based on link quality, comprising: establishing a first wireless communication link and a second wireless communication link with a mobile station, the first wireless communication link included in a first communication path used for communications between the mobile station and a destination device, the second wireless communication link included in a second communication path used for communications between the mobile station and the destination device; monitoring, from the mobile station, the link quality of the first wireless link; determining, at the mobile station, that the link quality of the first communication link has decreased below a low link quality threshold; using a router at the mobile station, routing communications between the mobile station and the destination device to the second communication path that includes the second wireless communication link to the mobile station, the second communication path selected by the router based on an instantaneous internetwork topology and one or more routing metrics; determining, at the mobile station, that the link quality of the first communication link has decreased below a high link quality threshold that is higher than the low link quality threshold; establishing the second wireless communication link included in the second communication path; and routing communications between the mobile station and the destination device to both the first and second communication paths.
Claim 3
Dependent Claim 28 words
The method of claim 1 , wherein routing communications comprises transmitting the communications to a communication interface of the mobile station associated with the second wireless communication link.
Claim 4
Dependent Claim 32 words
The method of claim 1 , wherein routing communications comprises communicating routing information associated with the second communication path to one or more routers coupling the mobile station and the destination device.
Claim 5
Dependent Claim 25 words
The method of claim 1 , further comprising abandoning the first wireless communication link after initiating routing of the communications to the second communication path.
Claim 6
Dependent Claim 18 words
The method of claim 1 , wherein the first and second communication links use different wireless communication protocols.
Claim 7
Dependent Claim 22 words
The method of claim 5 , wherein at least one of the wireless communication protocols is not a cellular telephone communication protocol.
Claim 8
Dependent Claim 17 words
The method of claim 1 , wherein both the first and second communication links support packet-based communications.
Claim 9
Dependent Claim 22 words
The method of claim 1 , wherein the first communication link supports packet-based communications and the second communication link supports circuit-switched communications.
Claim 10
Dependent Claim 28 words
The method of claim 1 , wherein monitoring the link quality of the first wireless communication link comprises measuring the bit error rate of the wireless communication link.
Claim 11
Dependent Claim 30 words
The method of claim 1 , further comprising abandoning the first communication link after the link quality of the first communication link has decreased below the low link quality threshold.
Claim 12
Dependent Claim 29 words
The method of claim 1 , wherein routing communications using both the first and second communication paths comprises routing substantially identical communications over the first and second communication paths.
Claim 13
Dependent Claim 31 words
The method of claim 1 , wherein routing communications using both the first and second communication paths comprises routing different portions of the communications using the first and second communication paths.
Claim 14
Dependent Claim 230 words
A mobile station, comprising: a first communication interface operable to enable a first wireless communication link with the mobile station, the first wireless communication link included in a first communication path used for communications between the mobile station and a destination device; a second communication interface operable to enable a second wireless communication link with the mobile station, the second wireless communication link included in a second communication path used for communications between the mobile station and the destination device; and a router operable to: monitor the link quality of the first wireless link; determine that the link quality of the first communication link has decreased below a low link quality threshold; route communications between the mobile station and the destination device to the second communication path that includes the second wireless communication link with the mobile station, the second wireless communication link enabled using the second communication interface, the second communication path selected by the router based on an instantaneous internetwork topology and one or more routing metrics; determine that the link quality of the first communication link has decreased below a high link quality threshold that is higher than the low link quality threshold; initiate the establishment of the second wireless communication link included in the second communication path; and route communications between the mobile station and the destination device to both the first and second communication paths.
Claim 15
Dependent Claim 230 words
A mobile station, comprising: a first communication interface operable to enable a first wireless communication link with the mobile station, the first wireless communication link included in a first communication path used for communications between the mobile station and a destination device; a second communication interface operable to enable a second wireless communication link with the mobile station, the second wireless communication link included in a second communication path used for communications between the mobile station and the destination device; and a router operable to: monitor the link quality of the first wireless link; determine that the link quality of the first communication link has decreased below a low link quality threshold; route communications between the mobile station and the destination device to the second communication path that includes the second wireless communication link with the mobile station, the second wireless communication link enabled using the second communication interface, the second communication path selected by the router based on an instantaneous internetwork topology and one or more routing metrics; determine that the link quality of the first communication link has decreased below a high link quality threshold that is higher than the low link quality threshold; initiate the establishment of the second wireless communication link included in the second communication path; and route communications between the mobile station and the destination device to both the first and second communication paths.
Claim 16
Dependent Claim 19 words
The mobile station of claim 13 , wherein routing communications comprises transmitting the communications to the second communication interface.
Claim 17
Dependent Claim 33 words
The mobile station of claim 13 , wherein routing communications comprises communicating routing information associated with the second communication path to one or more routers coupling the mobile station and the destination device.
Claim 18
Dependent Claim 34 words
The mobile station of claim 13 , wherein the router is further operable to initiate the abandonment of the first wireless communication link after initiating routing of the communications to the second communication path.
Claim 19
Dependent Claim 19 words
The mobile station of claim 13 , wherein the first and second communication interfaces use different wireless communication protocols.
Claim 20
Dependent Claim 23 words
The mobile station of claim 17 , wherein at least one of the wireless communication protocols is not a cellular telephone communication protocol.
Claim 21
Dependent Claim 18 words
The mobile station of claim 13 , wherein both the first and second communication links support packet-based communications.
Claim 22
Dependent Claim 23 words
The mobile station of claim 13 , wherein the first communication link supports packet-based communications and the second communication link supports circuit-switched communications.
Claim 23
Dependent Claim 29 words
The mobile station of claim 13 , wherein the router is further operable to determine the bit error rate of the wireless communication link to monitor the link quality.
Claim 24
Dependent Claim 39 words
The mobile station of claim 13 , wherein the router is further operable to initiate the abandonment of the first communication path after the link quality of the first communication link has decreased below the low link quality threshold.
Claim 25
Dependent Claim 30 words
The mobile station of claim 13 , wherein routing communications using both the first and second communication paths comprises routing substantially identical communications over the first and second communication paths.
Claim 26
Dependent Claim 32 words
The mobile station of claim 13 , wherein routing communications using both the first and second communication paths comprises routing different portions of the communications using the first and second communication paths.
Claim 27
Dependent Claim 212 words
Communication software embodied in a computer-readable medium and operable to: establish a first wireless communication link and a second wireless communication link with a mobile station, the first wireless communication link included in a first communication path used for communications between the mobile station and a destination device, the second wireless communication link included in a second communication path used for communications between the mobile station and the destination device; monitor, from the mobile station, the link quality of the first wireless link; determine, at the mobile station, that the link quality of the first communication link has decreased below a low link quality threshold; route communications between the mobile station and the destination device the second communication path that includes the second wireless communication link to the mobile station, the second communication path selected by the router based on an instantaneous internetwork topology and one or more routing metrics; determine, at the mobile station, that the link quality of the first communication link has decreased below a high link quality threshold that is higher than the low link quality threshold; establish the second wireless communication link included in the second communication path; and route communications between the mobile station and the destination device to both the first and second communication paths.
Claim 28
Dependent Claim 212 words
Communication software embodied in a computer-readable medium and operable to: establish a first wireless communication link and a second wireless communication link with a mobile station, the first wireless communication link included in a first communication path used for communications between the mobile station and a destination device, the second wireless communication link included in a second communication path used for communications between the mobile station and the destination device; monitor, from the mobile station, the link quality of the first wireless link; determine, at the mobile station, that the link quality of the first communication link has decreased below a low link quality threshold; route communications between the mobile station and the destination device the second communication path that includes the second wireless communication link to the mobile station, the second communication path selected by the router based on an instantaneous internetwork topology and one or more routing metrics; determine, at the mobile station, that the link quality of the first communication link has decreased below a high link quality threshold that is higher than the low link quality threshold; establish the second wireless communication link included in the second communication path; and route communications between the mobile station and the destination device to both the first and second communication paths.
Claim 29
Dependent Claim 28 words
The software of claim 25 , wherein routing communications comprises transmitting the communications to a communication interface of the mobile station associated with the second wireless communication link.
Claim 30
Dependent Claim 32 words
The software of claim 25 , wherein routing communications comprises communicating routing information associated with the second communication path to one or more routers coupling the mobile station and the destination device.
Claim 31
Dependent Claim 26 words
The software of claim 25 , further operable to abandon the first wireless communication link after initiating routing of the communications to the second communication path.
Claim 32
Dependent Claim 18 words
The software of claim 25 , wherein the first and second communication links use different wireless communication protocols.
Claim 33
Dependent Claim 22 words
The software of claim 29 , wherein at least one of the wireless communication protocols is not a cellular telephone communication protocol.
Claim 34
Dependent Claim 17 words
The software of claim 25 , wherein both the first and second communication links support packet-based communications.
Claim 35
Dependent Claim 22 words
The software of claim 25 , wherein the first communication link supports packet-based communications and the second communication link supports circuit-switched communications.
Claim 36
Dependent Claim 28 words
The software of claim 25 , wherein monitoring the link quality of the first wireless communication link comprises measuring the bit error rate of the wireless communication link.
Claim 37
Dependent Claim 31 words
The software of claim 25 , further operable to abandon the first communication link after the link quality of the first communication link has decreased below the low link quality threshold.
Claim 38
Dependent Claim 29 words
The software of claim 25 , wherein routing communications using both the first and second communication paths comprises routing substantially identical communications over the first and second communication paths.
Claim 39
Dependent Claim 31 words
The software of claim 25 , wherein routing communications using both the first and second communication paths comprises routing different portions of the communications using the first and second communication paths.
Claim 40
Independent Claim 224 words
A system for re-routing communications based on link quality, comprising: means for establishing a first wireless communication link and a second wireless communication link with a mobile station, the first wireless communication link included in a first communication path used for communications between the mobile station and a destination device, the second wireless communication link included in a second communication path used for communications between the mobile station and the destination device; means for monitoring, from the mobile station, the link quality of the first wireless link; means for determining, at the mobile station, that the link quality of the first communication link has decreased below a low link quality threshold; means for routing communications between the mobile station and the destination device to the second communication path that includes the second wireless communication link to the mobile station, the second communication path selected based on an instantaneous internetwork topology and one or more routing metrics; means for determining, at the mobile station, that the link quality of the first communication link has decreased below a high link quality threshold that is higher than the low link quality threshold; means for establishing the second wireless communication link included in the second communication path; and means for routing communications between the mobile station and the destination device to both the first and second communication paths.
Claim 41
Independent Claim 224 words
A system for re-routing communications based on link quality, comprising: means for establishing a first wireless communication link and a second wireless communication link with a mobile station, the first wireless communication link included in a first communication path used for communications between the mobile station and a destination device, the second wireless communication link included in a second communication path used for communications between the mobile station and the destination device; means for monitoring, from the mobile station, the link quality of the first wireless link; means for determining, at the mobile station, that the link quality of the first communication link has decreased below a low link quality threshold; means for routing communications between the mobile station and the destination device to the second communication path that includes the second wireless communication link to the mobile station, the second communication path selected based on an instantaneous internetwork topology and one or more routing metrics; means for determining, at the mobile station, that the link quality of the first communication link has decreased below a high link quality threshold that is higher than the low link quality threshold; means for establishing the second wireless communication link included in the second communication path; and means for routing communications between the mobile station and the destination device to both the first and second communication paths.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 2007-10-12 2008-04-12 2008-10-12 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2011-10-12 2012-04-12 2012-10-12 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2015-10-12 2016-04-12 2016-10-12 $7700.00 Window Closed / Lapsed

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