Access control enhancements for delivery of video and other services
DC- US 6,970,461 B2
- Filed: 11/29/2000
- Issued: 11/29/2005
- Est. Priority Date: 11/29/2000
- Status: Expired due to Fees
First Claim
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1. A network access unit for restricting user access to multicast signals transmitted on a local access network and comprising:
- a port for receiving a request from a user to join a multicast channel;
a multicast channel request vetting unit for vetting the request with respect to a predetermined list of permitted multicast channels for that user;
a transmitter for selectively forwarding the request responsive to the vetting when the list comprises the requested multicast channel;
wherein the local access network is a shared medium access network.
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Abstract
A method of providing secure multicast over a local access network by means of a network access unit having a channel request vetting function and a permitted channel list. Channel requests from a subscriber are vetted with respect to the permitted channel list and forwarded only if permitted. The permitted list may be dynamically updated under headend control to allow users to subscribe to, and unsubscribe from, services upon request.
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Citations
13 Claims
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1. A network access unit for restricting user access to multicast signals transmitted on a local access network and comprising:
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a port for receiving a request from a user to join a multicast channel; a multicast channel request vetting unit for vetting the request with respect to a predetermined list of permitted multicast channels for that user; a transmitter for selectively forwarding the request responsive to the vetting when the list comprises the requested multicast channel; wherein the local access network is a shared medium access network. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of restricting user access to multicast signals transmitted on a local access network comprising the steps of:
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receiving a request to join a multicast channel from a user at a first port; vetting the request with respect to a predetermined list of permitted multicast channels for the user; and selectively forwarding the request responsive to the vetting when the list comprises the requested multicast channel, wherein the local access network is a shared medium access network. - View Dependent Claims (8, 9, 10)
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11. A method of providing a secure multicast service over a shared medium access network, the method comprising:
using an IGMP vetting function in customer premises equipment. - View Dependent Claims (12)
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13. A program for a computer on a machine readable medium arranged to:
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receive a request to join a multicast channel over a shared access medium network from a user at a first port; vet the request with respect to a predetermined list of permitted multicast channels for the user; selectively forward the request responsive to the vetting when the list comprises the requested multicast channel.
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Specification
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Litigation Data
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Current AssigneeInternational License Exchange of America, LLC (Equitable IP Corporation)
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Original AssigneeNortel Networks Limited (Nortel Networks Corporation)
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InventorsUnitt, Brian, Grant, Michael, Cable, Julian, Pino, Lou
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Primary Examiner(s)MARCELO, MELVIN C
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Application NumberUS09/725,360
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Publication Number
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Time in Patent Office1,826 Days
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Field of Search370/390, 370/392, 725 27- 29, 725/86
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US Class Current370/390
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CPC Class CodesH04L 12/185 with management of multicas...H04L 12/1859 adapted to provide push ser...H04L 47/15 in relation to multipoint t...H04L 47/70 Admission control; Resource...H04L 47/788 Autonomous allocation of re...H04L 47/805 QOS or priority awareH04L 47/806 Broadcast or multicast trafficH04L 47/808 User-type awareH04L 63/101 Access control lists [ACL]H04N 21/2543 Billing , e.g. for subscrip...H04N 21/266 Channel or content manageme...H04N 21/4542 Blocking scenes or portions...H04N 21/4622 Retrieving content or addit...H04N 21/4782 Web browsing , e.g. WebTVH04N 21/6405 Multicasting data broadcast...H04N 21/64322 IPH04N 7/17309 Transmission or handling of...
