Comprehensive system design to address the needs for virtual segmentation of the coaxial cable plant

Patent metadata

Field	Value
Publication number	US-11228339-B2
Application number	US-202016781099-A
Country	US
Kind code	B2
Filing date	Feb 4, 2020
Priority date	Feb 4, 2019
Publication date	Jan 18, 2022
Grant date	Jan 18, 2022

Abstract

Methods and devices for dynamically designated first and second subsets of a plurality of frequency channels as upstream and downstream channels, respectively, for performing wired communications using virtual segmentation between a network controller and an endpoint device. performing virtual segmentation to service an endpoint device. Communications are performed between the network controller and the endpoint device through a wired communication medium using the upstream and downstream channels. The first subset and second subsets of the plurality of channels are designated as upstream channels and downstream channels, respectively, based at least in part on one or both of upstream and downstream channel demand and channel availability.

First claim

What is claimed is:

1. A method for performing virtual segmentation to service an endpoint device, the method comprising:
by a virtual repeater station located between the endpoint and a cable headend:
designating, by the virtual repeater station, a plurality of channels within a range of frequencies, wherein each of the plurality of channels comprises a separate respective sub-band of frequency within the range of frequencies, wherein the separate sub-bands of frequency are selected to occur at frequencies above a highest frequency utilized by Data Over Cable Service Interface Specification (DOCSIS) plus a guard interval;
designating, by the virtual repeater station, a first subset of the plurality of channels as upstream channels and a second subset of the plurality of channels as downstream channels for the virtual segmentation; and
performing, by the virtual repeater station, communications between a network controller and the endpoint device through a coaxial cable by utilizing the plurality of channels,
wherein the first subset of the plurality of channels are designated as upstream channels and the second subset of the plurality of channels are designated as downstream channels based at least in part on upstream and downstream channel demand.

2. The method of claim 1 ,
wherein one or more of a code rate and a modulation scheme for one or more of the plurality of channels is selected based on an attenuation level associated with the sub-band of frequency of the respective channel.

3. The method of claim 1 ,
wherein designating the first subset of the plurality of channels as upstream channels and the second subset of the plurality of channels as downstream channels is performed further based at least in part on upstream and downstream channel availability.

4. The method of claim 1 ,
wherein the sub-bands of the plurality of channels are selected to avoid overlapping bandwidth utilized by the DOCSIS.

5. The method of claim 4 ,
wherein selecting the sub-bands of the plurality of channels to avoid overlapping bandwidth utilized by the DOCSIS comprises selecting the sub-bands of the plurality of channels to occur at the frequencies above h highest frequency utilized by the DOCSIS plus the guard interval.

6. The method of claim 5 ,
wherein the sub-bands of the plurality of channels are selected to extend to an upper band edge of the coaxial cable.

7. The method of claim 1 ,
wherein the sub-bands of each of the plurality of channels are selected to increase channel utilization of the range of frequencies.

8. The method of claim 1 , the method further comprising:
dynamically re-designating a new first subset of the plurality of channels as upstream channels and a new second subset of the plurality of channels as downstream channels based at least in part on one or more of:
current traffic conditions; and
a signal-to-interference-plus-noise-ratio (SINR) associated with the communications between the network controller and the endpoint device.

9. The method of claim 8 ,
wherein said dynamically re-designating the new first subset and the new second subset is performed periodically with a predetermined periodicity.

10. The method of claim 8 ,
wherein said dynamically re-designating the new first subset and the new second subset is performed on a per-frame basis.

11. The method of claim 1 , the method further comprising:
designating a third subset of the plurality of channels as exclusion and/or guard bands.

12. A method for performing virtual segmentation, the method comprising:
by a virtual repeater station located between an endpoint device and a cable headend:
designating, by the virtual repeater station, a plurality of channels within a range of frequencies, wherein each of the plurality of channels comprises a separate respective sub-band of frequency within the range of frequencies, wherein the separate sub-bands of frequency are selected to occur at frequencies above a highest frequency utilized by Data Over Cable Service Interface Specification (DOCSIS) plus a guard interval;
designating, by the virtual repeater station, a first subset of the plurality of channels as upstream channels and a second subset of the plurality of channels as downstream channels for communication with the endpoint device; and
performing, by the virtual repeater station, communications between a network controller and the endpoint device by utilizing the plurality of channels,
wherein designating the first subset of the plurality of channels as upstream channels and the second subset of the plurality of channels as downstream channels is performed based at least in part on upstream and downstream channel demand.

13. The method of claim 12 ,
wherein performing communications between the network controller and the endpoint device comprises performing analog-to-digital conversion followed by digital-to-analog conversion for the upstream channels and the downstream channels.

14. The method of claim 12 ,
wherein designating the first subset of the plurality of channels as upstream channels and the second subset of the plurality of channels as downstream channels is performed further based at least in part on upstream and downstream channel availability.

15. The method of claim 12 , the method further comprising:
dynamically re-designating a new first subset of the plurality of channels as upstream channels and a new second subset of the plurality of channels as downstream channels based at least in part on one or more of:
current traffic conditions; and
a signal-to-interference-plus-noise-ratio (SINR) associated with the communications between the network controller and the endpoint device.

16. A wired communication device, comprising:
a non-transitory computer-readable memory medium;
one or more processors, wherein the wired communication device comprises a virtual repeater station located between an endpoint and a cable headend, wherein the virtual repeater station is configured to:
designate a plurality of channels within a range of frequencies, wherein each of the plurality of channels comprises a separate respective sub-band of frequency within the range of frequencies, wherein the separate sub-bands of frequency are selected to occur at frequencies above a highest frequency utilized by Data Over Cable Service Interface Specification (DOCSIS) plus a guard interval;
designate a first subset of the plurality of channels as upstream channels and a second subset of the plurality of channels as downstream channels for virtual segmentation; and
perform communications between a network controller and the endpoint device through a coaxial cable by utilizing the plurality of channels,
wherein the first subset of the plurality of channels are designated as upstream channels and the second subset of the plurality of channels are designated as downstream channels based at least in part on upstream and downstream channel demand.

17. The wired communication device of claim 16 ,
wherein one or more of a code rate and a modulation scheme for one or more of the plurality of channels is selected based on an attenuation level associated with the frequency range of the respective channel.

18. The wired communication device of claim 16 , further comprising:
a radio coupled to the one or more processors, wherein the wired communication device is further configured to:
utilize the radio to host a wireless auxiliary service, wherein the wireless auxiliary service provides one or both of wired-to-wireless and wireless-to-wired communication in

Assignees

• Coherent Logix Inc

Inventors

• Shelby Kevin A
• Doerr Michael B

Classifications

• H04L47/70

  Admission control; Resource allocation · CPC title

• H04B3/04 Primary

  Control of transmission; Equalising · CPC title

• H04L12/2801 Primary

  Broadband local area networks · CPC title

• H04N21/6118

  involving cable transmission, e.g. using a cable modem · CPC title

• H04N21/631

  Multimode Transmission, e.g. transmitting basic layers and enhancement layers of the content over different transmission paths or transmitting with different error corrections, different keys or with different transmission protocols · CPC title