Quality of service management in a switched digital video environment

• US 7,742,407 B2
• Filed: 11/10/2005
• Issued: 06/22/2010
• Est. Priority Date: 11/10/2005
• Status: Active Grant

• Current Assignee: Tech 5 SAS
• Original Assignee: Scientific-Atlanta LLC (Cisco Systems, Inc.)
• Inventors: Rovira, Luis A., Versteeg, William C., Wall, William E., Alsobrook, David B.
• Primary Examiner(s): Nguyen; Steven H
• Assistant Examiner(s): Rose; Kerri M
• Application Number:
  US11/164,102
• Publication Number:
  US 20070104226A1
• Time in Patent Office: 1,685 Days
• Field of Search: 370229-232, 370/252, 370/253, 370/464, 370/465, 370/468, 725/37, 725/59, 725/74, 725/78, 725/82, 725/105, 725/114, 725/116, 725/117, 725/95, 725/96
• US Class Current: 370/230
• CPC Class Codes: H04N 21/2385 Channel allocation H04N21/266 takes precedence; Bandwidth allocation H04N21/24 takes precedence ; allocation of channels according to the instantaneous demands of the users in time-division multiplex systems H04J3/1682; admission control, resource allocation in open networks H04L12/5692; arrangements for maintenance or administration in data switching networks involving bandwidth and capacity management H04L41/0896; negotiating bandwidth in wireless networks H04W28/16
• CPC Class Codes: H04N 21/26216 involving the channel capacity, e.g. network bandwidth admission control, resource allocation in open networks H04L12/5692; flow control in packet networks H04L47/10; establishing a schedule or organising the servicing of application requests taking into account QoS H04L67/61
• CPC Class Codes: H04N 21/6125 involving transmission via Internet transmission by internet of broadcast information H04H60/82
• CPC Class Codes: H04N 21/6405 Multicasting data broadcast and multicast in packet switching networks H04L12/18
• CPC Class Codes: H04N 7/17309 Transmission or handling of upstream communications

Abstract

Quality of service management in a switched digital video environment. The devices in a user'"'"'s home can be given quality of service priority statuses by a system operator. In the event of oversubscription, the quality of service management allows the user to determine which services will have priority over others if more bandwidth is requested than available.

Claims

1. A method of providing a quality of service for a multicast group of devices at a subscriber premises, said method comprising the steps of:

receiving, by a switched digital video device in communication with said multicast group of devices, a priority status in a request for a digital service from at least one of said multicast group of devices in said subscriber premises; and

evaluating, by the switched digital video device, said request by comparing bandwidth requirements of said one request to available bandwidth of said subscriber premises, wherein comparing the bandwidth requirements comprises;

parsing a service plurality of service request packets prior to sending the packets upstream to a headend;

adding a bandwidth management status to each of the plurality of service request packets, the bandwidth management status comprising a correlation between a requested bandwidth and the available bandwidth; and

sending an error message to the at least one of said multicast group of devices in said subscriber premises that does not have adequate bandwidth.

2. The method of claim 1, further comprising the step of determining there is insufficient available bandwidth to grant both said request and another request received from another device in the multicast group of devices.

3. The method of claim 2, further comprising the step of granting said request if said priority status of said request is higher priority than another request received from another device in the multicast group of devices.

4. The method of claim 2, further comprising the step of denying said request if said priority status of said request is lower priority than another received from another device in the multicast group of devices.

5. The method of claim 1, further comprising the step of ordering said requests from each device in said subscriber premises based upon said priority status of each said request.

6. The method of claim 5, further comprising the step of granting one of said requests if said priority status of said one request is higher than another said request of another device.

7. The method of claim 6, further comprising the step of denying said other request if said priority status of said one request is lower than said other request of another device, and there is insufficient bandwidth to grant both said one request and said other request.

8. A computing device comprising:

a processor executing instructions retrieved from a memory, the instructions operable to;

receive a priority status in a request for a digital service from a device in a multicast group of devices located at a subscriber premises; and

evaluate the request by comparing bandwidth requirements of the request to available bandwidth of the subscriber premises, wherein in comparing the bandwidth requirements, the instructions are operable to;

parse a plurality of service request packets prior to sending the packets upstream to a headend;

add a bandwidth management status to each of the plurality of service request packets, the bandwidth management status comprising a correlation between a requested bandwidth and the available bandwidth; and

send an error message to the at least one of said multicast group of devices in said subscriber premises that does not have adequate bandwidth.

9. The computing device of claim 8, wherein the instructions are further operable to:

determine there is insufficient available bandwidth to grant both the request and another request received from another device in the multicast group of devices.

10. The computing device of claim 9, wherein the instructions are further operable to:

grant the request if said priority status of the request is higher priority than another request received from another device in the multicast group of devices.

11. The computing device of claim 9, wherein the instructions are further operable to:

deny the request if said priority status of the request is lower priority than another request received from another device in the multicast group of devices.

12. A system of providing a quality of service for a multicast group of devices at a subscriber premises, the system comprising a switched digital video device in communication with said multicast group of devices, the switched digital video device being configured to:

receive a priority status in a request for a digital service from at least one of said multicast group of devices in said subscriber premises; and

evaluate said request wherein the switched digital video device being configured to evaluate comprises the switched digital video device being configured to compare bandwidth requirements of said one request to available bandwidth of said subscriber premises, wherein the switched digital video device being configured to compare the bandwidth requirements comprises the switched digital video device being configured to;

parse a service plurality of service request packets prior to sending the packets upstream to a headend;

add a bandwidth management status to each of the plurality of service request packets, the bandwidth management status comprising a correlation between a requested bandwidth and the available bandwidth; and

send an error message to the at least one of said multicast group of devices in said subscriber premises that does not have adequate bandwidth.

13. The system of claim 12, wherein the switched digital video device is further configured to determine that there is insufficient available bandwidth to grant both said request and another request received from another device in the multicast group of devices.

14. The system of claim 13, wherein the switched digital video device is further configured to grant said request if said priority status of said request is higher priority than another request received from another device in the multicast group of devices.

15. The system of claim 13, wherein the switched digital video device is further configured to deny said request if said priority status of said request is lower priority than another received from another device in the multicast group of devices.

16. The system of claim 12, wherein the switched digital video device is further configured to order said requests from each device in said subscriber premises based upon said priority status of each said request.

17. The system of claim 16, wherein the switched digital video device is further configured to grant one of said requests if said priority status of said one request is higher than another said request of another device.

18. The system of claim 17, wherein the switched digital video device is further configured to deny said other request if said priority status of said one request is lower than said other request of another device, and there is insufficient bandwidth to grant both said one request and said other request.