37 results about "Cable modem" patented technology

A method includes initiating, by a first system-on-chip (SoC) of an access device, a first modem software stack (MSS) operable to communicate with a registration server and operable to communicate with a first local area network (LAN) port of the access device. The method includes initiating, by a second SoC of the access device, a second MSS operable to communicate with the registration server and operable to communicate with a second LAN port of the access device. The method includes registering and provisioning the first MSS as a first modem with the registration server using a first media access control (MAC) address. The method includes registering and provisioning the second MSS as a second modem with the registration server using a second MAC address.

A computing system fits a long-term utilization line through aggregate utilization values that correspond to ones of a plurality of intervals over a time period. The computing system determines, for each respective interval of / ordinal intervals in each second time period within the time period, a mean residual value based on a difference between a utilization value identified on the long-term utilization line at the respective interval and an actual aggregate utilization value at a same ordinal interval in each second time period. An aggregate probability value, based in part on a probability that a cable modem of a plurality of cable modems can obtain at one or more intervals a maximum bandwidth allocated to the cable modem, is determined, and in response to determining that the aggregate probability value is a non-preferred value, an alert, indicating that the service group is overutilized, is sent.

A method and apparatus for detecting and locating a fault in a cable network. A cable modem may perform channel estimation to obtain a time domain channel response on an echo channel in a cable network. The cable modem then analyzes the time domain channel response to determine whether there is any change from a previously obtained time domain channel response on the echo channel. If there is a change from the previously obtained time domain channel response, the cable modem may generate an alert for a fault in the cable network and estimate a location of the fault based on the time domain channel response. Calibration may be performed to determine a reference latency for a reflection occurred inside the cable modem, and the location of the fault may be estimated based on the reference latency.

An intelligent monitoring and testing system for a cable network determines measurements for a cable plant (CP), including cable modems (CMs) and common network elements. Metrics determined from the measurements are analyzed to detect a service issue and a service sub-issue. Machine learning is applied to the metrics and other related data to determine an optimized workflow for diagnosing, locating, and remediating the service issue and service sub-issue.

Boost is provided. A circuit of a cable modem can be configured to receive, at a first input, a first message from a device over a channel, the channel comprising various subcarriers. The circuit can determine a transfer function associated with each of the subcarriers, the transfer function including an indication of power transfer between the circuit and the device. The circuit can determine, using the transfer functions, a power adjustments corresponding to the subcarriers. The circuit can determine, using the power adjustments, another power adjustment for the channel. The circuit can transmit, at a first output, a second message over the channel, the transmit power of the second message responsive to each of the power adjustments.

Devices, systems and methods for adaptively associating a percentile value to each of a plurality of subcarriers at which a cable modem communicates data, the percentiles value used to respectively determine an aggregated RxMER value for each subcarrier. The aggregated RxMER values for the subcarriers may be used to determine and assign one or more bitloading profiles to the cable modem.

A computing system accesses actual aggregate service group utilization values that correspond to ones of a plurality of intervals over a first period of time and that identify an aggregate service group bandwidth utilization by cable modems in a service group at a plurality of intervals, the first period of time including multiple second periods of time having a same time duration, each second period of time having I ordinal intervals, and estimated aggregate service group utilization values that correspond to the actual aggregate service group utilization values. The computing system determines an additional bandwidth quantity for the service group such that an aggregate probability over a predetermined period of time that the plurality of cable modems will exceed a current provisioned bandwidth of the service group and the additional bandwidth quantity is within a desired probability range. A computing system sends, to a destination, the additional bandwidth quantity.

A method of detecting a radio frequency signal leakage in a wired cable network may be provided. The method may be performed by a testing instrument. The method may include scanning wireless radio frequency signals in a test area. The method may also include receiving a wireless radio frequency signal in response to the scanning and extracting a bit pattern from the received wireless radio frequency signal. The method may further include comparing the extracted bit pattern with one or more predetermined bit patterns associated with corresponding one or more cable modems in the wired cable network. The method may additionally include indicating that the received wireless radio frequency signal is a leakage signal from the wired cable network in response to determining that the extracted bit pattern matches at least one predetermined bit pattern of the one or more predetermined bit patterns.

Processing a signal originating from a node port experiencing ingress. A node that provides service to a plurality of cable modems will generally have a plurality of node ports. The node may be a Remote PHY Node or a Remote MACPHY node (RMN) for example. A detection is made that a particular node port of the node is experiencing ingress. In response, an upstream signal originating from the particular node port is analyzed to dynamically determine an amount to attenuate the upstream signal. The upstream signal is attenuated the dynamically determined amount prior to the signal being processed at an active device upstream from the particular node port experiencing the ingress. Distortion and / or saturation of the signal at the active device is advantageously prevented.

A plurality of cable modems (CMs) serviced by a cable management termination system (CMTS) are identified, each of the CMs being associated with a particular bandwidth service tier of a plurality of bandwidth service tiers. The plurality of CMs are grouped into a quantity of groups of CMs based on the bandwidth service tier with which each CM is associated. A CM orthogonal frequency division multiplexing (OFDM) profile is generated for each respective CM in each group of CMs. A plurality of group OFDM profiles are generated. Each respective group OFDM profile is generated based on the CM OFDM profiles of the CMs in a respective group of CMs and, for each subcarrier of a plurality of subcarriers, a quadrature amplitude modulation (QAM) order is identified.

In a cable modem network, upstream bandwidth is allocated to service flows by receiving requests from modems, wherein each request identifies an amount of requested bandwidth for a corresponding requesting service flow; determining how much best-effort bandwidth to allocate for each requesting service flow; determining how much remaining bandwidth is available after taking into account all of the best-effort bandwidth for the requesting service flows; determining how much of the remaining bandwidth to allocate as proactive grant service (PGS) upstream bandwidth to PGS service flows; determining, for each requesting service flow, a summed bandwidth as a sum of any corresponding best-effort bandwidth and any corresponding PGS bandwidth; determining, for each requesting service flow, an amount of allocated bandwidth as a minimum of the summed bandwidth and a maximum allowable bandwidth; and transmitting grants to the modems identifying the amounts of allocated upstream bandwidth for the corresponding service flows.

The utility model discloses a cable modem, including casing, circuit board, is equipped with main chip and upstream and downstream signal processing unit on the circuit board, and downstream signal processing unit is connected with modulation signal interface, still includes the fin, and the fin fixedly arranged on the circuit board, and the fin includes the contact piece, the connecting piece, the fin of integral structure, and the contact piece is contacted with main chip, and the connecting piece sets up in the contact piece four weeks to connect the fin, and the connecting piece is set up to the top of shell folding to the fin is set up to the outside folding of shell, and the circuit board on the outer periphery of main chip is equipped with a plurality of third vent, and the top of shell is equipped with first vent, and the bottom of shell is equipped with second vent. The utility model discloses the structure of fin has the special design to the space inside casing, has greater radiating area, and the circuit board below the fin is seted up third vent, and third vent and first, second vent cooperate and form the chimney effect, and it is favorable to better heat dissipation.

This utility model discloses a CPU testing device for a cable modem, including a main control module, a connecting circuit board, and a hardware interface board. The main control module is housed in a base box and communicates with the connecting circuit board. The hardware interface board includes a board body, a mounting bracket, and a probe module. The board body is fixedly connected to the top of the base box, and the connecting circuit board is clamped between the board body and the base box. The mounting bracket includes a cover and a base, and the base, probe module, and board body are detachably and fixedly connected. The probe module includes a drilling plate, a probe plate, a floating plate, and a limiting frame. This utility model provides a hardware testing interface specifically for testing the CPU of a cable modem. After connecting the CPU under test to the connecting circuit board through the hardware testing interface, the test software can be run through communication between the connecting circuit board and the main control module to perform the test, simplifying the CPU testing process. Furthermore, the probe module adopts a modular design, making it easy to replace and adapt to the testing of CPUs of different specifications, thus exhibiting good versatility.

In a cable modem network, upstream bandwidth is allocated to service flows by receiving requests from modems, wherein each request identifies an amount of requested bandwidth for a corresponding requesting service flow; determining how much best-effort bandwidth to allocate for each requesting service flow; determining how much remaining bandwidth is available after taking into account all of the best-effort bandwidth for the requesting service flows; determining how much of the remaining bandwidth to allocate as proactive grant service (PGS) upstream bandwidth to PGS service flows; determining, for each requesting service flow, a summed bandwidth as a sum of any corresponding best-effort bandwidth and any corresponding PGS bandwidth; determining, for each requesting service flow, an amount of allocated bandwidth as a minimum of the summed bandwidth and a maximum allowable bandwidth; and transmitting grants to the modems identifying the amounts of allocated upstream bandwidth for the corresponding service flows.

In some implementations, a system may include one or more processors configured to identify a set of bit loading profiles and respective target bit rates of the plurality of cable modems (CMS). The one or more processors may determine respective average bit rates of the plurality of CMs, determine, using the set of bit loading profiles and the respective average bit rates of the plurality of CMs, a plurality of sets of CMs having a first order of sets. For each set of CMs in the first order, the one or more processors may determine, based at least on respective target bit rates of the CMs in the set, a plurality of subsets of CMs having a second order of subsets, and for each subset in the second order, determine, from among the set of bit loading profiles, one or more bit loading profiles for corresponding CMs in the subset.

Systems and methods for dynamically updating bit loading profile assignments among a plurality of cable modems. The disclosed systems and methods utilize aggregated noise data to determine a set of bit loading profiles to assign to a group of cable modems.

A plurality of cable modems (CMs) serviced by a cable management termination system (CMTS) are identified, each of the CMs being associated with a particular bandwidth service tier of a plurality of bandwidth service tiers. The plurality of CMs are grouped into a quantity of groups of CMs based on the bandwidth service tier with which each CM is associated. A CM orthogonal frequency division multiplexing (OFDM) profile is generated for each respective CM in each group of CMs. A plurality of group OFDM profiles are generated. Each respective group OFDM profile is generated based on the CM OFDM profiles of the CMs in a respective group of CMs and, for each subcarrier of a plurality of subcarriers, a quadrature amplitude modulation (QAM) order is identified.

Boost is provided. A circuit of a cable modem can be configured to receive, at a first input, a first message from a device over a channel, the channel comprising various subcarriers. The circuit can determine a transfer function associated with each of the subcarriers, the transfer function including an indication of power transfer between the circuit and the device. The circuit can determine, using the transfer functions, a power adjustments corresponding to the subcarriers. The circuit can determine, using the power adjustments, another power adjustment for the channel. The circuit can transmit, at a first output, a second message over the channel, the transmit power of the second message responsive to each of the power adjustments.

The invention relates to the technical field of CM testing, in particular to a downlink signal power testing method and testing device for a cable modem, and the testing device comprises a CMTS, an adjustable attenuator, a power divider, a field intensity meter, tested equipment, a PC program control system and a switch. Through a PC program control system, initialization and output frequency points of the CMTS are controlled, and initialization and signal intensity of the adjustable attenuator are controlled. CMTS parameters can be automatically set, manual testing is avoided from repeatedly changing the parameters for testing, the attenuation value of the adjustable attenuator is automatically adjusted according to an instruction, field intensity meter parameters are automatically set and read, then the field intensity meter parameters are compared with actual parameters of tested equipment through a calculation module, a testing result is automatically obtained, manual testing is replaced, and the testing efficiency is improved. And the test efficiency is improved.

A method includes initiating, by a first system-on-chip (SoC) of an access device, a first modem software stack (MSS) operable to communicate with a registration server and operable to communicate with a first local area network (LAN) port of the access device. The method includes initiating, by a second SoC of the access device, a second MSS operable to communicate with the registration server and operable to communicate with a second LAN port of the access device. The method includes registering and provisioning the first MSS as a first modem with the registration server using a first media access control (MAC) address. The method includes registering and provisioning the second MSS as a second modem with the registration server using a second MAC address.

A method of using customer premises cable modem equipment to generate a signal that can be used for leakage detection. Various signal types are described which are usable for the purposes of leakage detection.

1. The name of the design product: cable modem. 2. The use of the design product: the design product is used with cmts, and the internet function is realized through coaxial cable. 3. The design points of the design product: the combination of shape and pattern. 4. The picture or photo that best indicates the design points: perspective view.

A node circuit associated with a hybrid fiber coax (HFC) network is disclosed. The node circuit includes an optimizer circuit configured to process a plurality of signal-to-noise ratio (SNR) values associated with a plurality of subcarriers, respectively, associated with a set of cable modem (CM) circuits coupled to the node circuit. In some embodiments, at least one subcarrier is allocated to the set of CM circuits for communication with the node circuit. In some embodiments, the optimizer circuit is further configured to determine an optimal transmit power of the node circuit, based on the plurality of SNR values and a transmitter distortion of a transmitter circuit associated with the node circuit. In some embodiments, the transmitter distortion defines a transmitter distortion associated with the transmitter circuit in terms of a total transmit power of the node circuit.

A node circuit associated with a hybrid fiber coax (HFC) network is disclosed. The node circuit includes an optimizer circuit configured to process a plurality of signal-to-noise ratio (SNR) values associated with a plurality of subcarriers, respectively, associated with a set of cable modem (CM) circuits coupled to the node circuit. In some embodiments, at least one subcarrier is allocated to the set of CM circuits for communication with the node circuit. In some embodiments, the optimizer circuit is further configured to determine an optimal transmit power of the node circuit, based on the plurality of SNR values and a transmitter distortion of a transmitter circuit associated with the node circuit. In some embodiments, the transmitter distortion defines a transmitter distortion associated with the transmitter circuit in terms of a total transmit power of the node circuit.

Methods and systems for optimizing profile management application processing for downstream channels in a service provider network are described. A method for automated optimization of profile management application (PMA) processing for downstream channels in a service provider network, the method includes obtaining, by a collector in a service provider system from cable modems in a service provider network, data for downstream channels having expired collection timestamps, setting, by an analytics engine, the collection timestamps for each of the downstream channels, and dynamically determining, by the analytics engine, PMA profile application times for each of the downstream channels based on at least the data.

Devices, systems and methods for adaptively associating a percentile value to each of a plurality of subcarriers at which a cable modem communicates data, the percentiles value used to respectively determine an aggregated RxMER value for each subcarrier. The aggregated RxMER values for the subcarriers may be used to determine and assign one or more bitloading profiles to the cable modem.

A modem may include a processing device. The processing device may monitor, at the modem, a downstream spectrum for performance data. The processing device may determine, at the modem, when the performance data is greater than a threshold. The processing device may send, from the modem to a converged cable access platform (CCAP) core, the performance data when the performance data is greater than the threshold.

In some aspects, the disclosure is directed to methods and systems for interference mitigation and cancellation in full duplex amplifiers for cable modem or broadband communication systems. In many implementations, an interference canceller in the downstream path may be provided to equalize composite power on the FDX upstream subbands within a predetermined range of amplitude (e.g. X dB) from the desired downstream signal on the same subband, without affecting the downstream subbands.

Methods and systems for optimizing profile management application processing for downstream channels in a service provider network are described. A method for automated optimization of profile management application (PMA) processing for downstream channels in a service provider network, the method includes obtaining, by a collector in a service provider system from cable modems in a service provider network, data for downstream channels having expired collection timestamps, setting, by an analytics engine, the collection timestamps for each of the downstream channels, and dynamically determining, by the analytics engine, PMA profile application times for each of the downstream channels based on at least the data.