WO2013022416A1 - Interdiction ou autorisation sélective d'opérations en mode de canaux d'émission multiples pour modems câble possédant cette capacité - Google Patents

Interdiction ou autorisation sélective d'opérations en mode de canaux d'émission multiples pour modems câble possédant cette capacité Download PDF

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Publication number
WO2013022416A1
WO2013022416A1 PCT/US2011/034811 US2011034811W WO2013022416A1 WO 2013022416 A1 WO2013022416 A1 WO 2013022416A1 US 2011034811 W US2011034811 W US 2011034811W WO 2013022416 A1 WO2013022416 A1 WO 2013022416A1
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WO
WIPO (PCT)
Prior art keywords
mode operations
mtc mode
cpe
mtc
mac domain
Prior art date
Application number
PCT/US2011/034811
Other languages
English (en)
Inventor
Dwain FRIEH
Ruth CLOONAN
Dale Paney
Original Assignee
Arris Group, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Arris Group, Inc. filed Critical Arris Group, Inc.
Priority to PCT/US2011/034811 priority Critical patent/WO2013022416A1/fr
Publication of WO2013022416A1 publication Critical patent/WO2013022416A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2801—Broadband local area networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/10—Adaptations for transmission by electrical cable
    • H04N7/102—Circuits therefor, e.g. noise reducers, equalisers, amplifiers

Definitions

  • This disclosure is related to multiple transmit channel mode operations for a cable modem.
  • a Data-Over-Cable Service Interface Specification (DOCSIS) system can be used to deliver high-definition digital entertainment and telecommunications such as video, voice, and high-speed Internet to subscribers over an existing cable television network.
  • the cable television network can take the form of an all-coax, all-fiber, or hybrid fiber/ coax (HFC) network.
  • a cable service provider such as a multiple service operator (MSO) can deliver these services to subscribers by using a cable modem termination system (CMTS) located at a headend and cable modems (CMs) and customer premise equipment (CPE) devices, such as set-top boxes, multimedia terminal adapters (MTAs), and gateway devices, located at subscriber premises.
  • Traffic transferred from the CMTS to the CM can be said to travel in a downstream direction on one or more downstream channels; conversely, traffic transferred from the CM to the CMTS can be said to travel in an upstream direction on one or more upstream channels.
  • a DOCSIS MAC domain is a logical sub-component of a CMTS that is responsible for forwarding data to and from CMs reached by a set of downstream and upstream channels associated with the MAC domain.
  • Channel bonding for a MAC domain can be used to increase the rate of upstream and downstream traffic forwarding between a CMTS and a CM in the MAC domain.
  • Channel bonding was introduced in the DOCSIS 3.0 specification. Since the bonding mechanisms for downstream and upstream channel bonding are different, downstream and upstream channel bonding for a MAC domain can be configured independently.
  • a DOCSIS system can enable downstream channel bonding for a MAC domain without enabling upstream channel bonding for the same MAC domain. Then, at a later time, the DOCSIS system can enable upstream channel bonding for the MAC domain.
  • the DOCSIS system can enable upstream channel bonding for a MAC domain, without enabling downstream channel bonding.
  • the DOCSIS system can later enable downstream channel bonding.
  • both the MAC domain and the CMs in the MAC domain must be enabled for upstream channel bonding.
  • the CMTS MAC domain and CM in the MAC domain must be enabled to operate in a multiple transmit channel (MTC) mode MTC mode.
  • MTC multiple transmit channel
  • the CMTS always enables MTC mode operations for any CM in the MAC domain capable of MTC mode operations that registers with the CMTS MAC domain.
  • FIG. 1 is a block diagram illustrating an example DOCSIS-based system used to provide communications between a CMTS and a CM over a network.
  • FIGS. 2 and 3 are flowcharts illustrating example processes for determining whether to enable or disable MTC mode operations for a CM.
  • FIG. 4 is a block diagram illustrating a CMTS operable to enable or disable
  • CMs in a MAC domain.
  • the system operator can set a control attribute in a CMTS enabled for MTC mode operations for a MAC domain to conditionally disable MTC mode operations for one or more CMs in the MAC domain capable of operating in MTC mode.
  • a CM in the MAC domain meets a certain criteria, the CM is enabled for MTC mode operations.
  • the various implementations described herein are described with reference to a cable modem, but it should be understood that the concepts disclosed herein can be applied to enabling or disabling MTC mode operations for one any CPE device.
  • this disclosure makes reference to a DOCSIS-based system, this disclosure is not intended to be limited to a DOCSIS-based system.
  • FIG. 1 illustrates an example DOCSIS-based system operable to deliver high-definition digital entertainment and telecommunications such as video, voice, and high-speed Internet to a subscriber over an existing cable television network.
  • traffic e.g., data, video, and voice signal
  • CER CMTS or converged edge router
  • CM cable modem
  • the cable network 130 can take the form of an all-coax, all-fiber, or hybrid fiber/ coax (HFC) network.
  • Traffic transmitted from the CMTS/ CER 110 to the CM 120 can be said to travel in a downstream direction on one or more downstream channels; conversely, traffic transmitted from the CM 120 to the CMTS/CER 110 can be said to travel in an upstream direction on one or more upstream channels.
  • channel bonding can be used to increase the rate of upstream and/ or downstream traffic forwarding between the CMTS and CM.
  • the CMTS 110 dynamically distributes downstream packets over a set of downstream channels for delivery to a CM 120 in the MAC Domain.
  • the CM 120 has multiple receivers and is tuned to receive all of the channels in the set.
  • Each packet transmitted by the CMTS 110 can be tagged with a sequence number so that proper data sequencing is not lost if there are differences in latency between the channels in the set.
  • the CM 120 may re-sequence the downstream data stream to restore the original packet sequence.
  • Upstream channel bonding for a MAC domain can occur when the CMTS
  • CM 110 and CM 120 are enabled to operate in multiple transmit channel (MTC) mode, e.g., as described in DOCSIS 3.0.
  • MTC multiple transmit channel
  • CMTS and CM functionalities are different in the DOCSIS 3.0 MTC mode.
  • the CM 120 divides a stream of packets into a set of segments and transmits the segments over multiple upstream channels during time slots granted by the CMTS 110.
  • the CM 120 can place an incrementing sequence number in the segments transmitted on the channels so that the CMTS 110 can reconstruct the original stream.
  • the registration process described in the DOCSIS specification can be used to enable a CM to operate in a MTC mode.
  • the CM can inform the CMTS of whether it is capable of operating in the MTC mode.
  • the CM can inform the CMTS of whether it is capable of operating in the MTC mode through a multiple transmit channel support modem capability encoding in the registration request message as described in the DOCSIS specification. If the CM reports a multiple transmit channel support capability of zero, for example, then the CM is incapable of operating in the MTC mode. If the CM reports a non-zero multiple transmit channel support capability, for example, then the CM is capable of operating in the MTC mode.
  • the CMTS In existing systems, if the CMTS is enabled to operate in the MTC mode for a particular MAC domain and a CM in the same MAC domain is capable of operating in the MTC mode, then the CMTS automatically enables the CM to operate in the MTC Mode.
  • the CMTS can enable the CM to operate in the MTC Mode by, for example, confirming (e.g., returning) in the registration response message the value of the multiple transmit channel support capability parameter transmitted in the registration request message.
  • the CMTS If the CMTS is enabled to operate in the MTC mode for a particular MAC domain but a CM in the MAC domain is not capable of operating in the MTC mode, then the CMTS will not enable the CM to operate in the MTC mode. For example, the CMTS can return a value of zero (indicating that the capability must be turned off) for the multiple transmit channel support capability parameter in the registration response message. If the CMTS is disabled from operating in the MTC mode for a particular MAC domain, the CMTS will not enable a CM in the MAC domain to operate in the MTC mode regardless of whether the CM is capable of operating in the MTC mode. Thus, the CMTS can return a value of zero for the multiple transmit channel support capability parameter in the registration response message.
  • the CMTS automatically enables MTC mode operations for any CM in the MAC domain capable of operating in MTC mode that registers with the CMTS MAC domain.
  • These existing DOCSIS systems do not permit a system operator to control whether to enable MTC mode operations for a CM capable of operating in MTC mode. That is, even if a particular CMTS MAC domain is capable of operating in MTC mode, a system operator may want to delay MTC mode operations for certain CMs capable of MTC mode operations in the MAC domain.
  • CMs in the MAC domain may be desirable to delay enabling all the CMs in the MAC domain for MTC mode operations until successful field trials have been made with a subset of the CMs.
  • FIGS. 2 and 3 illustrate example processes 200, 300, respectively for determining whether to enable MTC mode operations for a CM. It can be assumed in these examples that, based on the DOCSIS specification, the CMTS receives a registration request message from a CM containing a multiple transmit channel support capability parameter indicating whether the CM is capable of operating in the MTC mode. It also can be assumed in theses examples that a system operator can set a control attribute to conditionally enable or disable MTC mode operations for a CM capable of MTC mode operations.
  • a control attribute that permits a system operator to conditionally disable MTC mode operations for a CM capable of MTC mode operations can be included as a new object used by a new vendor-implemented management information base (MIB) module.
  • MIB management information base
  • the control attribute can be set to one of two values to specify whether MTC mode operations for a CM capable of MTC mode operations are conditionally disabled.
  • a first value of the control attribute can indicate that MTC mode operations for a CM capable of MTC mode operations in a MAC domain is conditionally disabled, even if the CMTS MAC domain to which it registers is enabled for MTC mode operations;
  • a second value of the control attribute can indicate that MTC mode operations for a CM capable of MTC mode operations in a MAC domain is enabled if the CMTS MAC domain to which it registers is enabled for MTC mode operations.
  • a CMTS receives a registration request from a CPE device (e.g., CM 120 of FIG. 1) in a particular MAC domain.
  • stage 210 it is determined whether the CMTS MAC domain is enabled to operate in the MTC mode. If the CMTS MAC domain is not enabled for MTC mode operations ("No" at stage 210), then at stage 215, the CMTS disables the CM from operating in the MTC mode. In some implementations, the CMTS can disable the CM from operating in the MTC mode by setting the multiple transmit channel support capability parameter in the registration response message to a first value (e.g., zero) to indicate that the capability has been turned off. In some implementations, the registration response message can be based on the DOCSIS specification. However, it should be understood that in some implementations, the registration response can be any message from the CMTS to the CM disabling the CM from operating in the MTC mode.
  • the CMTS MAC domain is enabled to operate in the MTC mode ("Yes" at stage 210)
  • the CM is not capable of MTC mode operations ("No" at stage 220)
  • the CMTS can disable the CM from MTC mode operations at stage 215, as discussed above.
  • the CM is capable of MTC mode operations ("Yes" at stage 220), then at stage 225, it is determined whether MTC mode operations for CMs capable of MTC mode operations in the MAC domain have been set to be disabled. In some implementations, this determination can be made based on the value of a control attribute that can be set by a system operator. If CM MTC mode operations have not been set to be disabled ("No" at stage 225), then the CMTS enables the CM for MTC mode operations at stage 230. In some implementations, the CMTS can enable the CM to operate in the MTC mode by setting the multiple transmit channel support capability parameter in the registration response message to a second value (e.g., one) to indicate that the capability has been turned on. In some implementations, the registration response message can be based on the DOCSIS specification. However, it should be understood that in some implementations, the registration response can be any message from the CMTS to the CM enabling the CM to operate in the MTC mode.
  • the CMTS can disable the CM from MTC mode operations at stage 215, as discussed above.
  • the CMTS 110 of FIG. 1 prior to disabling the CM from MTC mode operations, it can be determined (e.g., by the CMTS 110 of FIG. 1) at stage 235 whether the CM has at least one bonded service flow (e.g., a service flow assigned to two of more upstream channels for upstream channel bonding). In some implementations, this determination can be made based on service flow information in the CM's configuration file, which may be transmitted to the CMTS in the registration request. If the CM has a bonded service flow ("Yes" at stage 235), then the CMTS enables the CM for MTC mode operations at stage 230, as discussed above.
  • bonded service flow e.g., a service flow assigned to two of more upstream channels for upstream channel bonding
  • stage 235 can include different or additional conditions that must be met prior to disabling the CM from MTC mode operations. For example, it can be determined at stage 235 whether the CM is included on a list (e.g., by MAC address) of CMs to enable for MTC mode operations. If the CM is included on a list of CMs to enable for MTC mode operations, then the CMTS enables the CM for MTC mode operations at stage 230, as discussed above. If the CM is not included on a list of CMs to enable for MTC mode operations ("No" at stage 235), then the CMTS disables the CM from MTC mode operations at stage 215, as discussed above.
  • a list e.g., by MAC address
  • a system operator can delay enabling MTC mode operations for select CMs capable of MTC mode operations in the MAC domain based on certain criteria (such as each CMs' service flow, status on a list, or any other criteria).
  • control attribute can take many forms and this disclosure is not limited to the examples set forth above.
  • FIG. 4 illustrates an example CMTS 110 operable to perform the example process 200 of FIG. 2.
  • the CMTS 110 can include a processor 410, a memory 420, a removable data storage unit 430, and an input/ output device 440.
  • Each of the components 410, 420, 430, and 440 can, for example, be interconnected using a system bus 450.
  • the download manager 490 can include one of more interconnected boards where each board comprises components 410, 420, 430, and 440.
  • the processor 410 is capable of processing instructions for execution within the download manager 490.
  • the processor 410 can be capable of processing instructions for executing the process 200 of FIG. 2 in the CMTS 110.
  • the processor 410 is a single-threaded processor. In other implementations, the processor 410 is a multi-threaded processor. The processor 410 is capable of processing instructions stored in the memory 420 or on the storage device 430. [0029]
  • the memory 420 stores information within the CMTS 110. In some implementations, the memory 420 is a computer-readable medium. In other implementations, the memory 420 is a volatile memory unit. In still other implementations, the memory 420 is a non-volatile memory unit.
  • the storage device 430 is capable of providing mass storage for CMTS 110.
  • the storage device 430 is a computer-readable medium.
  • the storage device 430 can, for example, include a hard disk device, an optical disk device, flash memory or some other large capacity storage device.
  • the input/ output device 440 provides input/ output operations for the
  • the input/output device 440 can include one or more of a wireless interface, HFC network interface, such as, for example, an IP network interface device, e.g., an Ethernet card, a cellular network interface, a serial communication device, e.g., and RS-232 port, and/ or a wireless interface device, e.g., and 802.11 card.
  • the input/output device 440 can include driver devices configured to receive input data and send output data to other input/ output devices, as well as sending communications to, and receiving communications from various networks.
  • Implementations of the device of this disclosure can be realized by instructions that upon execution cause one or more processing devices to carry out the processes and functions described above.
  • Such instructions can, for example, comprise interpreted instructions, such as script instructions, e.g., JavaScript or ECMAScript instructions, or executable code, or other instructions stored in a computer readable medium.
  • the processes and logic flows described in this specification can be performed by one or more programmable processors executing one or more computer programs to perform functions by operating on input data and generating output thereby tying the process to a particular machine (e.g., a machine programmed to perform the processes described herein).
  • the processes and logic flows can also be performed by, and apparatus can also be implemented as, special purpose logic circuitry, e.g., an FPGA (field programmable gate array) or an ASIC (application specific integrated circuit).
  • Computer readable media suitable for storing computer program instructions and data include all forms of non volatile memory, media and memory devices, including by way of example semiconductor memory devices, e.g., EPROM, EEPROM, and flash memory devices; magnetic disks, e.g., internal hard disks or removable disks; magneto optical disks; and CD ROM and DVD ROM disks.
  • semiconductor memory devices e.g., EPROM, EEPROM, and flash memory devices
  • magnetic disks e.g., internal hard disks or removable disks
  • magneto optical disks e.g., CD ROM and DVD ROM disks.
  • the processor and the memory can be supplemented by, or incorporated in, special purpose logic circuitry.
  • implementations of the subject matter described in this specification can be operable to interface with a computing device having a display, e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor, for displaying information to the user and a keyboard and a pointing device, e.g., a mouse or a trackball, by which the user can provide input to the computer.
  • a display e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor
  • a keyboard and a pointing device e.g., a mouse or a trackball

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention porte sur des procédés et des appareils pour autoriser ou interdire des opérations en mode MTC pour une pluralité de dispositifs CPE dans un domaine MAC. Un opérateur de système peut commander l'autorisation d'opérations en mode MTC pour certains dispositifs CPE capables d'effectuer des opérations en mode MTC dans un domaine MAC par réglage d'un attribut de commande dans un CMTS autorisé pour des opérations en mode MTC pour le domaine MAC.
PCT/US2011/034811 2011-08-08 2011-08-08 Interdiction ou autorisation sélective d'opérations en mode de canaux d'émission multiples pour modems câble possédant cette capacité WO2013022416A1 (fr)

Priority Applications (1)

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PCT/US2011/034811 WO2013022416A1 (fr) 2011-08-08 2011-08-08 Interdiction ou autorisation sélective d'opérations en mode de canaux d'émission multiples pour modems câble possédant cette capacité

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PCT/US2011/034811 WO2013022416A1 (fr) 2011-08-08 2011-08-08 Interdiction ou autorisation sélective d'opérations en mode de canaux d'émission multiples pour modems câble possédant cette capacité

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115633088A (zh) * 2022-10-28 2023-01-20 深圳创维数字技术有限公司 Cable Modem上线方法、装置、设备及存储介质

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US7523329B2 (en) * 2006-07-19 2009-04-21 Texas Instruments Incorporated Apparatus for and method of reducing power consumption in a cable modem
US20100154016A1 (en) * 2008-12-12 2010-06-17 Cisco Technology, Inc. Multi-channel ranging for a cable modem
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US7970010B2 (en) * 2004-12-10 2011-06-28 Broadcom Corporation Upstream channel bonding in a cable communications system
US7523329B2 (en) * 2006-07-19 2009-04-21 Texas Instruments Incorporated Apparatus for and method of reducing power consumption in a cable modem
US20100154016A1 (en) * 2008-12-12 2010-06-17 Cisco Technology, Inc. Multi-channel ranging for a cable modem

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115633088A (zh) * 2022-10-28 2023-01-20 深圳创维数字技术有限公司 Cable Modem上线方法、装置、设备及存储介质

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