Method and system for prioritizing initial maintenance of cable modems

• US 8,923,319 B1
• Filed: 12/26/2010
• Issued: 12/30/2014
• Est. Priority Date: 01/28/2004
• Status: Active Grant

• Current Assignee: ARRIS Enterprises LLC (CommScope Holding Company, Inc.)
• Original Assignee: ARRIS Enterprises LLC (CommScope Holding Company, Inc.)
• Inventors: Krapp, Steven
• Primary Examiner(s): PHUNKULH, BOB A
• Application Number:
  US12/978,604
• Time in Patent Office: 1,465 Days
• Field of Search: None
• US Class Current: 370/437
• CPC Class Codes: H04L 12/2801 Broadband local area networks

Abstract

A user device connected to a CMTS over a network is configured such that upon power-up it can use a universal broadcast SID or a predetermined multicast SID to obtain an initial maintenance during a maintenance window. The predetermined multicast SID is assigned to the device at manufacture based on the type, or class, of device. The CMTS to which the devices connect is configured to schedule exclusive initial maintenance opportunity windows for each type of device in addition to an all-inclusive, or open, initial maintenance opportunity window, during which all types of devices may attempt to register. The order and number of initial maintenance windows within a periodically recurring sequence of windows can be configured by an operator based on the types of devices connected to the network.

Claims

1. A method for decreasing the time delay in connecting a communication device to a CMTS over a network, comprising:

receiving a plurality of multicast SIDs, the plurality of multicast SIDs defining a prioritized scheduling of initial maintenance opportunities;

storing a multicast SID from the plurality of multicast SIDs into the device in addition to a broadcast SID, wherein only devices of a given class may use a predetermined multicast SID assigned to the given class, and wherein devices of any class may use the broadcast SID, and

requesting initial maintenance with the CMTS using the multicast SID assigned to the class of the communication device.

2. The method of claim 1 further comprising requesting initial maintenance with the CMTS using the broadcast SID.

3. The method of claim 1 further comprising:

assigning a unicast SID after successfully performing initial maintenance; and

replacing the multicast SID with the assigned unicast SID.

4. The method of claim 1 wherein the multicast SID is assigned to the device based on the class of the device.

5. A method for decreasing the time delay in connecting a communication device to a CMTS over a network, comprising:

scheduling initial maintenance opportunities for each of a plurality of device classes, wherein only the devices of a given class may use a predetermined multicast SID assigned to the given class, or individual devices may use a respective unicast SID assigned to a particular device for requesting initial maintenance, wherein the plurality of device classes each comprise multiple devices and the plurality of device classes are prioritized to provide priority among devices in particular classes for requesting initial maintenance opportunities.

6. The method of claim 5 further comprising scheduling general initial maintenance opportunities for all devices wherein all devices may use a broadcast SID for requesting initial maintenance.

7. The method of claim 5 further comprising assigning a unicast SID to a given device after said device has successfully registered with the CMTS, the unicast SID to overwrite a predetermined multicast SID currently stored in said device.

8. The method of claim 5 wherein the predetermined multicast SID is determined based on the class of device to which it is to be assigned.

9. The method of claim 5 wherein the scheduled initial maintenance opportunities periodically recur as part of a periodically recurring initial maintenance sequence.

10. A system for decreasing the time delay in connecting a communication device to a CMTS over a network, comprising:

means for scheduling initial maintenance opportunities for each of a plurality of device classes, wherein only the devices of a given class may use a predetermined multicast SID associated with the given class for requesting initial maintenance; and

means for receiving request for initial maintenance opportunities for each of a plurality of device classes based upon the predetermined multicast SID associated with each of the plurality of device classes, wherein the devices classes each comprise multiple devices and the plurality of device classes are prioritized to provide priority among devices in various classes for requesting initial maintenance opportunities.

11. The system of claim 10 further comprising means for scheduling general initial maintenance opportunities for all devices wherein all devices may use a broadcast SID for requesting initial maintenance.

12. The system of claim 10 further comprising means for assigning a unicast SID to a given device after said device has successfully registered with the CMTS, the unicast SID to overwrite a predetermined multicast SID currently stored in said device.

13. The system of claim 10 wherein the predetermined multicast SID is determined based on the class of device to which it is to be assigned.

14. The system of claim 10 wherein the scheduled initial maintenance opportunities periodically recur as part of a periodically recurring initial maintenance sequence.