Patent US2530829A successfully refreshed from Google Patents.
Patent US6065061A successfully refreshed from Google Patents.
US6065061A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internet protocol based network architecture for cable television access with switched fallback
Assignee: Nokia of America Corp
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Filing: 1997-12-16
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Granted: 2000-05-16
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Expires: 2017-12-16
Abstract
Abstract A user accesses the Internet through a hybrid data communications system architecture in which upstream service is provided via the local loop of the public switched telephone network (PSTN) and downstream service is provided via a cable television (CATV) network. The Cable Modem Data Termination system (CMTS) includes a routing table. Upon detection of a CATV service interruption, the CMTS re-routes IP traffic destined for a destination IP address (IP1) associated with the user to a different IP address, or endpoint, as a function of the routing table. In this instance, the different IP address is associated with equipment that provides downstream IP service to the user via the local loop of the PSTN.
Inventors
- 👤 Donald Edgar Blahut
- 👤 James D. Bobeck
- 👤 Robert William Dalton
- 👤 Enrique Hernandez-Valencia
- 👤 Roger Henry Levy
- 👤 Ronald L. Sharp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:50
CPC Classifications
H; H04; H04L; H04L12/00; H04L12/54; H04L12/56; H04L12/5691; H04L12/5692
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
144 words
A method for use in providing Internet service to an endpoint, the method comprising the steps of: specifying routing information for an endpoint, wherein the routing information specifies primary and alternative Internet Protocol (IP) addresses; and communicating data to the endpoint using the specified primary IP address except during periods of service interruption in which one of the alternative IP addresses are used wherein the communicating data step further comprises the steps of: receiving an IP packet that includes a destination field, the value of which matches a subnetwork address identifier within the primary IP address; determining if a communications channel to the primary IP address is available; if the communications channel is available, routing the received IP packet to the primary IP address; and if the communications channel is not available, routing the received IP packet to one of the alternative IP addresses.
Claim 2
Independent Claim
144 words
A method for use in providing Internet service to an endpoint, the method comprising the steps of: specifying routing information for an endpoint, wherein the routing information specifies primary and alternative Internet Protocol (IP) addresses; and communicating data to the endpoint using the specified primary IP address except during periods of service interruption in which one of the alternative IP addresses are used wherein the communicating data step further comprises the steps of: receiving an IP packet that includes a destination field, the value of which matches a subnetwork address identifier within the primary IP address; determining if a communications channel to the primary IP address is available; if the communications channel is available, routing the received IP packet to the primary IP address; and if the communications channel is not available, routing the received IP packet to one of the alternative IP addresses.
Claim 3
Independent Claim
188 words
A method for use in providing Internet service to an endpoint via a primary communications channel, the method comprising the steps of: storing a routing table comprising an first Internet Protocol (IP) address associated with routing data to an endpoint via the primary communications channel and a second IP address associated with routing data to the endpoint over a secondary communications channel; and routing data to the endpoint as a function of the routing table such that during periods of service interruption on the primary communications channel data is routed to the endpoint via the secondary communications channel, whereas data is routed to the endpoint via the primary communications channel otherwise wherein the routing data step further comprises the steps of: receiving an IP packet that includes a destination field, the value of which matches a subnetwork address identifier within the first IP address; determining if the primary communications channel is available; if the primary communications channel is available, routing the received IP packet to the first IP address; and if the primary communications channel is not available, routing the received IP packet to the second IP address.
Claim 4
Independent Claim
188 words
A method for use in providing Internet service to an endpoint via a primary communications channel, the method comprising the steps of: storing a routing table comprising an first Internet Protocol (IP) address associated with routing data to an endpoint via the primary communications channel and a second IP address associated with routing data to the endpoint over a secondary communications channel; and routing data to the endpoint as a function of the routing table such that during periods of service interruption on the primary communications channel data is routed to the endpoint via the secondary communications channel, whereas data is routed to the endpoint via the primary communications channel otherwise wherein the routing data step further comprises the steps of: receiving an IP packet that includes a destination field, the value of which matches a subnetwork address identifier within the first IP address; determining if the primary communications channel is available; if the primary communications channel is available, routing the received IP packet to the first IP address; and if the primary communications channel is not available, routing the received IP packet to the second IP address.
References Cited (Backward Citations)
US4964120A
Cited
US5420857A
Cited
US5550820A
Cited
US5479650A
Cited
US5539449A
Cited
US5764624A
Cited
US5675732A
Cited
US5991308A
Cited
US5819036A
Cited
US5790806A
Cited
US5903558A
Cited
US5835727A
Cited
US5884024A
Cited
US5894479A
Cited
US5930247A
Cited
US5870134A
Cited
US5987524A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-05-16 | 2003-11-15 | 2004-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-05-16 | 2007-11-15 | 2008-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-05-16 | 2011-11-15 | 2012-05-16 | $7700.00 | Window Closed / Lapsed |