Method and apparatus for high bandwidth data transmission in content delivery networks

• US 9,681,161 B2
• Filed: 04/03/2015
• Issued: 06/13/2017
• Est. Priority Date: 12/15/2004
• Status: Active Grant

• Current Assignee: Time Warner Cable Enterprises LLC (Charter Communications Incorporated)
• Original Assignee: Time Warner Cable Enterprises LLC (Charter Communications Incorporated)
• Inventors: Mahonchak, Craig, Carlucci, John, Patel, Vipul, Callahan, John, Thomas, Jay, Gonder, Tom
• Primary Examiner(s): Chokshi, Pinkal R
• Application Number:
  US14/678,769
• Publication Number:
  US 20150281747A1
• Time in Patent Office: 802 Days
• CPC Class Codes: H04B 10/25751 Optical arrangements for CATV or video distribution adaptations of television systems for optical transmission H04N7/22
• CPC Class Codes: H04L 47/36 by determining packet size, e.g. maximum transfer unit [MTU]
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/612 for unicast
• CPC Class Codes: H04L 65/70 Media network packetisation
• CPC Class Codes: H04L 67/14 Session management for real-time applications in data packet communications networks H04L65/1066
• CPC Class Codes: H04N 21/2221 being a cable television head-end CATV in broadcast systems H04H20/78
• CPC Class Codes: H04N 21/23605 Creation or processing of packetized elementary streams [PES]
• CPC Class Codes: H04N 21/23614 Multiplexing of additional data and video streams arrangements for simultaneous broadcast of plural pieces of information H04H20/28
• CPC Class Codes: H04N 21/2383 Channel coding or modulation of digital bit-stream, e.g. QPSK modulation arrangements for detecting or preventing errors in the information received by adapting the channel coding H04L1/0009; analogue front ends or means for connecting modulators, demodulators or transceivers to a transmission line H04L27/0002
• 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 21/2393 involving handling client requests scheduling or organising the servicing of application requests H04L67/60
• CPC Class Codes: H04N 21/4344 Remultiplexing of multiplex streams, e.g. by modifying time stamps or remapping the packet identifiers
• CPC Class Codes: H04N 21/6118 involving cable transmission, e.g. using a cable modem
• CPC Class Codes: H04N 21/6338 directed to network
• CPC Class Codes: H04N 21/6375 for requesting retransmission , e.g. of data packets lost or corrupted during transmission from serverARQ protocols H04L1/18; implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP] H04L69/16
• CPC Class Codes: H04N 21/6402 Address allocation for clients address allocation in data networks H04L61/50
• CPC Class Codes: H04N 21/643 Communication protocols network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP], H04L65/65
• CPC Class Codes: H04N 21/64776 for requesting retransmission, e.g. of data packets lost or corrupted during transmission from server ARQ protocols H04L1/18; implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP] H04L69/16

Abstract

Methods and apparatus for delivering data over extant infrastructure within a content-based network. In one embodiment, the network comprises a cable network, and the infrastructure comprises that nominally used for on-demand (OD) services such as VOD. The method includes the allocation of dedicated end-to-end network resources via a “session request, as well as data flow control and packet size adaptation, by a data server based on feedback from the requesting/receiving client device (e.g., DSTB) within the network. Mechanisms for retransmission requests for error recovery are also provided.

Claims

1. An on-demand server apparatus configured to provide data over a content delivery network, comprising:

an interface for communication with at least one client device; and

a processor configured to run at least one computer program thereon, said computer program comprising a plurality of instructions which are configured to, when executed, cause said on-demand server apparatus to;

receive at least one non-content related data structure at a head-end distribution server from at least one data source;

process data contained within said non-content related data structure into a packet stream;

create a descriptive structure configured to describe said non-content related data structure;

establish a dedicated on-demand session on an in-band downstream transmission pathway from said head-end distribution server to said at least one client device based on a request received from software configured to operate on said at least one client device;

transmit a plurality of time-shifted copies of said non-content related data structure over said in-band downstream transmission pathway within a multiplexed transport stream and as part of said dedicated on-demand session;

monitor one or more retransmission requests in order to determine a transmission efficiency; and

when said transmission efficiency is at or above a determined threshold, incrementally increase a rate at which said plurality of time-shifted copies of said non-content related data structure are transmitted until said transmission efficiency falls below said determined threshold.

2. The on-demand server apparatus of claim 1, wherein said transmission of said non-content related data structure occurs only during prescribed periods of time.

3. The on-demand server apparatus of claim 2, wherein said prescribed periods of time are selected based at least in part on bandwidth considerations relating to said network.

4. The on-demand server apparatus of claim 1, wherein said plurality of instructions are further configured to send tuning information for said dedicated on-demand session to at least a second client device of said network so as to enable said second client device to access at least one of said time-shifted copies of said non-content related data structure via said dedicated on-demand session.

5. The on-demand server apparatus of claim 1, wherein said descriptive structure comprises a metadata file, and said packet stream comprises a Moving Pictures Experts Group (MPEG) based packet stream.

6. The on-demand server apparatus of claim 5, wherein said transmission of said plurality of time-shifted copies of said non-content related data structure comprises a software package that includes at least portions of said MPEG-based packet stream and said metadata file.

7. The on-demand server apparatus of claim 1, wherein said non-content related structure comprises a gaming-related data structure.

8. The on-demand server apparatus of claim 1, wherein said transmission of said plurality of time-shifted copies of said non-content related data structure is initiated only upon an expectation that multiple users within a local service area will download one or more of said plurality of time-shifted copies of said non-content related data structure in a substantially simultaneous fashion.

9. A server apparatus configured to provide data over a content delivery network, comprising:

a data interface configured to enable communication with a first client device; and

a processor apparatus in data communication with said data interface and configured to run at least one computer program thereon, said at least one computer program comprising a plurality of instructions which are configured to, when executed, cause said server apparatus to;

receive at least one non-content related data structure from at least one data source;

process data contained within said non-content related data structure into a packet stream;

create a descriptive structure configured to describe said non-content related data structure;

establish a session on a downstream transmission pathway from said distribution server to said at least one client device based on a request received from software configured to operate on said first client device;

transmit a plurality of time-shifted copies of said non-content related data structure over said downstream transmission pathway;

monitor one or more retransmission requests in order to determine a transmission efficiency; and

when said transmission efficiency is at or below a determined threshold, reduce a rate at which said plurality of time-shifted copies of said non-content related data structure are transmitted by a dynamically determined amount;

wherein said transmission efficiency is inversely proportional to errors produced by said rate.

10. The server apparatus of claim 9, wherein said plurality of instructions are further configured to cause said first client device to download at least a portion of a first application via a wireless interface of said first device, said portion of said first application configured to enable said first client device to access said plurality of time-shifted copies of said non-content related data structure via said session.

11. The server apparatus of claim 10, wherein said portion of said first application is integrated with a second application residing on a second device, and use portion of said first application and said second application configured to enable transmission of said plurality of time-shifted copies of said non-content related data structure to said second device via wireless interface of said first device.

12. The server apparatus of claim 9, wherein said transmission is based at least in part on one or more rules, said one or more rules being configured to said one or more rules being configured to assign bandwidth within multiple quadrature amplitude modulation (QAM) channels to a plurality of OD session requests, including said request, so as to maximize granting of OD requests for a second level of service among a plurality of OD requests for a first level of service and said second level of service.

13. The server apparatus of claim 12, wherein said first level of service comprises a standard definition (SD) data encoding, and said second level of service comprises a high-definition (HD) data encoding.

14. The server apparatus of claim 9, when said transmission efficiency is above said determined threshold, incrementally increase said rate at which said plurality of time-shifted copies of said non-content related data structure are transmitted until said transmission efficiency begins to decrease.

15. A method for providing data over a content delivery network, comprising:

receiving at least one non-content related data structure at a network distribution server from at least one data source;

generating a packet stream by at least processing data contained within said non-content related data structure;

creating metadata describing said non-content related data structure;

receiving a request generated by software operating on at least one client device in data communication with said content delivery network;

based at least in part on said request, establishing a session on a dedicated in-band downstream transmission pathway from said network distribution server to said at least one client device; and

transmitting a plurality of time-shifted copies of said non-content related data structure over said dedicated in-band downstream transmission pathway within a multiplexed transport stream and as part of said session;

monitoring one or more retransmission requests in order to determine a transmission efficiency; and

when said transmission efficiency is at or below a determined threshold, reducing by a dynamically determined amount a rate at which said plurality of time-shifted copies of said non-content related data structure are transmitted;

wherein said transmission efficiency is inversely proportional to errors produced by said rate.

16. The method of claim 15, wherein said transmitting occurs only during prescribed periods of time, said prescribed periods of time being selected based at least in part on bandwidth considerations relating to said content delivery network.

17. The method of claim 15, further comprising sending tuning information for said on-demand session to at least a second client device of said content delivery network so as to enable said second client device to access at least one of said time-shifted copies of said non-content related data structure via said dedicated on-demand session.

18. The method of claim 15, wherein:

said generating comprises disposing at least one or more portions of said data within Moving Pictures Experts Group (MPEG) packets; and

said metadata is configured to describe said at least one or more portions of said data of said MPEG packets.

19. The method of claim 15, wherein said metadata is utilized to disable a user-performed trick-mode functionality of said multiplexed transport stream.

20. The method of claim 15, wherein said non-content related data structure comprises a gaming-related software application computer program.