CN106878576B - Cable modem control method and device - Google Patents
Cable modem control method and device Download PDFInfo
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- CN106878576B CN106878576B CN201611187493.XA CN201611187493A CN106878576B CN 106878576 B CN106878576 B CN 106878576B CN 201611187493 A CN201611187493 A CN 201611187493A CN 106878576 B CN106878576 B CN 106878576B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0008—Modulated-carrier systems arrangements for allowing a transmitter or receiver to use more than one type of modulation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/10—Adaptations for transmission by electrical cable
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Abstract
The invention relates to a control method and a control device of a cable modem, which are applied to the cable modem, and the cable modem can utilize a channel bundling technology to transmit data with a cable modem terminal system. The cable modem control method includes: acquiring a first temperature of the cable modem in real time; when the first temperature is judged to exceed the set temperature range, the number of the bound channels is reduced, the data volume processed by the CPU of the cable modem in unit time can be reduced, the power consumption of the CPU of the cable modem is reduced, and therefore the probability that the temperature exceeds the temperature range in which the cable modem is suitable to work can be reduced.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for controlling a cable modem.
Background
The Cable Modem, also known as Cable Modem, and known by english as Cable Modem, has been developed in recent years with the expansion of network applications, and is mainly used for data transmission in Cable television networks. It adopts high-efficiency digital modulation technique and digital compression technique, and greatly raises the channel capacity of cable TV system, and has no need of updating system to a large extent, so that the cable TV system not only can provide more and richer TV programs with good quality, but also has enough frequency band resource to provide other various non-broadcast services, and the cable TV system is developed towards interactive two-way and comprehensive service direction, and is transited from narrow band to broad band.
However, the allowable operating temperature of the cable modem is usually between 0 ℃ and 40 ℃, and once the temperature exceeds the temperature range in which the cable modem is suitable to operate, the CPU of the cable modem may be overheated, so that the cable modem cannot operate normally, and even a fire accident may occur.
Disclosure of Invention
In view of the above, it is necessary to provide a cable modem control method and apparatus that can reduce the probability of occurrence of temperature exceeding a temperature range in which a cable modem is suitable to operate.
A cable modem control method is applied to a cable modem, and the cable modem utilizes a channel bundling technology to transmit data with a cable modem terminal system; the cable modem control method includes:
acquiring a first temperature of the cable modem in real time;
and when the first temperature is judged to be beyond the set temperature range, reducing the number of the bound channels.
In one embodiment, the cable modem modulates using a first modulation scheme; and, after the step of reducing the number of channels bound when it is determined that the first temperature is out of the set temperature range, the cable modem control method further includes:
acquiring a second temperature of the cable modem;
when the second temperature is judged to be still beyond the set temperature range, a second modulation mode is adopted for modulation; and the data transmission rate corresponding to the second modulation mode is smaller than that of the first modulation mode.
In one embodiment, when it is determined that the second temperature is still beyond the set temperature range, the step of performing modulation in a second modulation manner includes:
when the second temperature is judged to be still beyond the set temperature range, judging whether the number of the bound channels is equal to 1, if so, modulating in the second modulation mode; otherwise, the number of bonded lanes is reduced to 1.
In one embodiment, when it is determined that the second temperature is still beyond the set temperature range, the step of performing modulation in a second modulation manner includes:
when the second temperature is judged to be still beyond the set temperature range, sending a second temperature regulation request signal to the cable modem terminal system;
and under the control of the cable modem terminal system, modulating by adopting the second modulation mode.
In one embodiment, the step of obtaining the first temperature of the cable modem in real time comprises:
and acquiring a first temperature of the cable modem in real time through a thermosensitive element.
In one embodiment, when it is determined that the first temperature is beyond the set temperature range, the step of reducing the number of bound channels includes:
when the first temperature is judged to exceed the set temperature range, sending a first temperature regulation request signal to the cable modem terminal system;
reducing the number of bonded channels under control of the cable modem termination system.
A cable modem control device is applied to a cable modem, and the cable modem utilizes a channel bundling technology to transmit data with a cable modem terminal system; the cable modem control apparatus includes:
the first temperature acquisition module is used for acquiring the first temperature of the cable modem in real time;
and the first temperature adjusting module is used for reducing the number of the bound channels when the first temperature is judged to exceed the set temperature range.
In one embodiment, the cable modem modulates using a first modulation scheme; and, the cable modem control apparatus further includes:
the second temperature acquisition module is used for acquiring a second temperature of the cable modem;
the second temperature adjusting module is used for adopting a second modulation mode for modulation when the second temperature is judged to be still beyond the set temperature range; and the data transmission rate corresponding to the second modulation mode is smaller than that of the first modulation mode.
In one embodiment, the second temperature adjustment module comprises:
the channel number judging unit is used for judging whether the number of the bound channels is equal to 1 or not when the second temperature is judged to be still beyond the set temperature range, and if so, modulating in the second modulation mode; otherwise, the number of bonded lanes is reduced to 1.
In one embodiment, the second temperature adjustment module comprises:
a second temperature adjustment request transmitting unit, configured to transmit a second temperature adjustment request signal to the cable modem terminal system when it is determined that the second temperature still exceeds the set temperature range;
and the modulation mode adjusting unit is used for adopting the second modulation mode for modulation under the control of the cable modem terminal system.
The cable modem control method and the device have the beneficial effects that: in the method and the device for controlling the cable modem, the first temperature of the cable modem is obtained in real time, and when the first temperature is judged to be beyond the set temperature range, the number of bound channels is reduced, the data volume processed by a CPU of the cable modem in unit time can be reduced, the power consumption of the CPU of the cable modem is reduced, and therefore the probability that the temperature exceeds the temperature range in which the cable modem is suitable to work can be reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings of the embodiments can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart of a cable modem control method according to an embodiment;
fig. 2 is a circuit diagram of one specific implementation involved in step S100 of the cable modem method according to the embodiment shown in fig. 1;
fig. 3 is a flowchart illustrating one specific implementation of step S200 in the cable modem control method according to the embodiment shown in fig. 1;
FIG. 4 is a schematic diagram of the steps additionally included in one embodiment of the cable modem control method of the embodiment shown in FIG. 1;
fig. 5 is a flowchart illustrating one specific implementation of step S400 in the cable modem control method according to the embodiment shown in fig. 4;
fig. 6 is a block diagram of a cable modem control device according to another embodiment.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
An embodiment provides a cable modem control method, which is applied to a cable modem, that is, can be executed by the cable modem, and the cable modem performs data transmission with a cable modem terminal system by using a channel bundling technique.
The channel bundling technique is a technique adopted in the DOCSIS3.0 (data over cable service interface specification 3.0) standard, that is, several channels are bundled together and completed in a physical layer and a Media Access Control (MAC) layer, so that uplink and downlink rates and bandwidths can be improved, and thus the cable modem in the embodiment of the present invention is at least suitable for the DOCSIS3.0 standard. Cable Modem termination systems (cmts), which are devices for managing and controlling cable modems, may be configured through a Console interface or an ethernet interface, and mainly include: downlink frequency, downlink modulation mode, downlink level, etc.
As shown in fig. 1, a cable modem control method according to an embodiment of the present invention includes the following steps.
S100, acquiring a first temperature of the cable modem in real time.
Since the CPU in the cable modem generates a large amount of heat, the first temperature may be a temperature of the CPU in the cable modem.
And S200, reducing the number of bound channels when the first temperature is judged to be beyond the set temperature range.
The set temperature range is a temperature range capable of ensuring normal operation of the cable modem. Reducing the number of bonded channels, meaning reducing the number of channels that can communicate between the cable modem and the cable modem termination system, may take the form of reducing the DOCSIS version, for example: if the cable modem currently uses the channel corresponding to the DOCSIS3.1 standard, it may change to the channel corresponding to the DOCSIS3.0 standard, thereby reducing the number of 24 downstream channels to 16 or 8. If the number of channels to be bonded is reduced, the upstream and downstream rates are reduced, thereby reducing the amount of data processed by the CPU of the cable modem per unit time.
Therefore, in the embodiment of the present invention, when it is determined that the first temperature exceeds the set temperature range, the number of channels to be bound is reduced, and the amount of data processed by the CPU of the cable modem in a unit time can be reduced, thereby reducing the power consumption of the CPU of the cable modem, and thus reducing the probability of the occurrence of temperature exceeding the temperature range in which the cable modem is suitable to operate.
In one embodiment, step S100 includes: and acquiring a first temperature of the cable modem in real time through a thermosensitive element.
The thermosensitive element is made of a sensitive material of which the physical property of some objects changes along with the temperature change, and the thermosensitive element can be a thermistor, a thermosensitive sensor and the like. In an implementation, a thermistor may be placed in the area of the cable modem where the CPU is located so that the temperature of the CPU can be detected.
Taking a thermistor as an example, fig. 2 shows a detection circuit capable of detecting the temperature of the CPU of the cable modem, and it should be noted that the CPU in fig. 2 refers to the CPU of the cable modem. One end of the thermistor RT1 is connected to an AD (data) pin of the CPU, and the other end of the thermistor RT1 is grounded in common with one end of the capacitor C1. The other end of the capacitor C1 and one end of the resistor R1 are respectively connected with the common end of the CPU and the thermistor RT 1. The other end of the resistor R1 is connected to a power supply VCC. The resistor R1 is a pull-up resistor. The capacitor C1 is used for filtering. The thermistor RT1 is used for detecting the temperature of the CPU, when the temperature of the CPU changes, the resistance of the thermistor RT1 changes correspondingly, so that the voltage of the common end of the CPU and the thermistor RT1 changes correspondingly, therefore, the detection circuit can convert the temperature into analog voltage, and the CPU can detect the actual temperature of the CPU in real time.
It will be appreciated that other means of obtaining the first temperature of the cable modem may be used, for example a thermometer may be used.
In one embodiment, step S200 includes the following, please refer to fig. 3.
And S210, when the first temperature is judged to be beyond the set temperature range, sending a first temperature regulation request signal to the cable modem terminal system.
In the embodiment of the present invention, the cable modem sends the first temperature adjustment request signal to the cable modem terminal system through an HFC (Hybrid Fiber-Coaxial) network.
Step S220, under the control of the cable modem terminal system, reducing the number of the bound channels.
In the embodiment of the invention, after the cable modem terminal system receives the first temperature regulation request signal, the corresponding control signal is sent to the cable modem, so that the cable modem is controlled to reduce the number of bound channels.
In one embodiment, the cable modem is modulated using a first modulation scheme. The first modulation mode corresponds to the modulation mode of the uplink signal, and means that the cable modem modulates data transmitted from a PC of a user so as to transmit the data to a cable modem terminal system through an HFC network. Also, after step S200, the cable modem control method further includes the following contents, please refer to fig. 4.
Step S300, acquiring a second temperature of the cable modem.
The second temperature is a real-time temperature of the cable modem after the cable modem performs the step S200.
And S400, when the second temperature is judged to be still beyond the set temperature range, modulating in a second modulation mode. And the data transmission rate corresponding to the second modulation mode is smaller than that of the first modulation mode.
In the embodiment of the invention, if the temperature of the cable modem cannot be reduced to the set temperature range by reducing the number of the binding channels, the modulation mode can be changed to realize further temperature reduction. The data transmission rate corresponding to the second modulation mode is less than that of the first modulation mode, in other words, the second modulation mode is simpler than that of the first modulation mode, so that the data transmission rate is reduced, and the power consumption of a CPU (central processing unit) of the cable modem is further reduced. For example: the first Modulation scheme is 16QAM (Quadrature Amplitude Modulation), and the second Modulation scheme is QPSK (Quadrature Phase Shift key) Modulation.
Specifically, step S400 includes: when the second temperature is judged to be still beyond the set temperature range, judging whether the number of the bound channels is equal to 1, if so, modulating in the second modulation mode; otherwise, the number of bonded lanes is reduced to 1.
In other words, if the second temperature still exceeds the set temperature range after the step S200 is completed, it is first determined whether the number of the bound channels is reduced to the minimum (i.e. 1 channel), if so, the second modulation mode is adopted for modulation, otherwise, the number of the bound channels is continuously reduced until the number of the bound channels is reduced to 1 channel. Because the power consumption corresponding to the number of channels is greater than that of the modulation mode, the embodiment of the invention firstly adopts the mode of reducing the number of the bound channels, and can quickly achieve the aim of reducing the temperature. And when the number of the binding channels is already 1 and the temperature of the cable modem still does not meet the normal working requirement, the modulation mode can be changed to further reduce the temperature, so that the reliability of the cable modem is further improved.
Specifically, step S400 includes the following contents, please refer to fig. 5.
And S410, when the second temperature is judged to be still beyond the set temperature range, sending a second temperature regulation request signal to the cable modem terminal system.
Wherein the cable modem sends a second temperature adjustment request signal to the cable modem terminal system through the HFC network.
And S420, under the control of the cable modem terminal system, modulating by adopting the second modulation mode.
And after receiving the second temperature regulation request signal, the cable modem terminal system sends a corresponding control signal to the cable modem, so that the cable modem can be controlled to adopt the second modulation mode for modulation.
Furthermore, the cable modem terminal system may also simplify a modulation scheme corresponding to the downlink signal transmitted to the cable modem, for example, 256QAM may be changed to 64QAM, so that the cable modem may demodulate in the simplified demodulation scheme, and the power consumption of the CPU of the cable modem may also be further reduced.
In another embodiment, a cable modem control apparatus is provided for a cable modem, and the cable modem performs data transmission with a cable modem terminal system using a channel bundling technique. The cable modem control apparatus includes the following contents, please refer to fig. 6.
A first temperature obtaining module 100, configured to obtain a first temperature of the cable modem in real time.
The first temperature adjusting module 200 is configured to reduce the number of bound channels when it is determined that the first temperature exceeds a set temperature range.
In one embodiment, the cable modem is modulated using a first modulation scheme. And, the cable modem control apparatus further includes:
the second temperature acquisition module is used for acquiring a second temperature of the cable modem;
the second temperature adjusting module is used for adopting a second modulation mode for modulation when the second temperature is judged to be still beyond the set temperature range; and the data transmission rate corresponding to the second modulation mode is smaller than that of the first modulation mode.
In one embodiment, the second temperature adjustment module comprises: the channel number judging unit is used for judging whether the number of the bound channels is equal to 1 or not when the second temperature is judged to be still beyond the set temperature range, and if so, modulating in the second modulation mode; otherwise, the number of bonded lanes is reduced to 1.
In one embodiment, the second temperature adjustment module comprises:
and a second temperature adjustment request transmitting unit for transmitting a second temperature adjustment request signal to the cable modem terminal system when it is determined that the second temperature is still beyond the set temperature range.
And the modulation mode adjusting unit is used for adopting the second modulation mode for modulation under the control of the cable modem terminal system.
It should be noted that the cable modem control apparatus provided in this embodiment corresponds to the cable modem control method provided in the previous embodiment, and details thereof are not repeated here.
Fig. 1, 3 to 5 are schematic flow charts of methods according to embodiments of the present invention. It should be understood that, although the steps in the flowcharts of fig. 1, 3 to 5 are shown in sequence as indicated by the arrows, the steps are not necessarily performed in sequence as indicated by the arrows. The steps are not performed in the exact order shown and may be performed in other orders unless explicitly stated herein. Moreover, at least some of the steps in fig. 1, 3 through 5 may include multiple sub-steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed alternately or alternately with other steps or at least some of the sub-steps or stages of other steps.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A cable modem control method is applied to a cable modem, and the cable modem utilizes a channel bundling technology to transmit data with a cable modem terminal system; the cable modem control method includes:
acquiring a first temperature of the cable modem in real time;
when the first temperature is judged to exceed the set temperature range, the number of bound channels is reduced;
reducing the number of channels bound means reducing the number of channels that can be communicated between the cable modem and the cable modem termination system, reducing the amount of data processed by the CPU of the cable modem per unit time;
the channel binding technology is adopted in the 3.0 standard of the cable data service interface specification, namely a plurality of channels are bound together and are finished in a physical layer and a medium access control layer.
2. The cable modem control method of claim 1, wherein the cable modem is modulated using a first modulation scheme; and, after the step of reducing the number of channels bound when it is determined that the first temperature is out of the set temperature range, the cable modem control method further includes:
acquiring a second temperature of the cable modem;
when the second temperature is judged to be still beyond the set temperature range, a second modulation mode is adopted for modulation; and the data transmission rate corresponding to the second modulation mode is smaller than that of the first modulation mode.
3. The cable modem control method of claim 2, wherein the step of performing modulation in a second modulation scheme when it is determined that the second temperature is still outside the set temperature range comprises:
when the second temperature is judged to be still beyond the set temperature range, judging whether the number of the bound channels is equal to 1, if so, modulating in the second modulation mode; otherwise, the number of bonded lanes is reduced to 1.
4. The cable modem control method of claim 2, wherein the step of performing modulation in a second modulation scheme when it is determined that the second temperature is still outside the set temperature range comprises:
when the second temperature is judged to be still beyond the set temperature range, sending a second temperature regulation request signal to the cable modem terminal system;
and under the control of the cable modem terminal system, modulating by adopting the second modulation mode.
5. The cable modem control method according to any one of claims 1 to 4, wherein the step of acquiring the first temperature of the cable modem in real time comprises:
and acquiring a first temperature of the cable modem in real time through a thermosensitive element.
6. The cable modem control method according to any one of claims 1 to 4, wherein the step of reducing the number of bonded channels when it is determined that the first temperature is out of a set temperature range includes:
when the first temperature is judged to exceed the set temperature range, sending a first temperature regulation request signal to the cable modem terminal system;
reducing the number of bonded channels under control of the cable modem termination system.
7. A cable modem control device is applied to a cable modem, and the cable modem utilizes a channel bundling technology to transmit data with a cable modem terminal system; characterized in that said cable modem control means comprises:
the first temperature acquisition module is used for acquiring the first temperature of the cable modem in real time;
the first temperature adjusting module is used for reducing the number of bound channels when the first temperature is judged to exceed a set temperature range; reducing the number of channels bound means reducing the number of channels that can be communicated between the cable modem and the cable modem termination system, reducing the amount of data processed by the CPU of the cable modem per unit time;
the channel binding technology is adopted in the 3.0 standard of the cable data service interface specification, namely a plurality of channels are bound together and are finished in a physical layer and a medium access control layer.
8. The cable modem control apparatus of claim 7, wherein the cable modem is modulated using a first modulation scheme; and, the cable modem control apparatus further includes:
the second temperature acquisition module is used for acquiring a second temperature of the cable modem;
the second temperature adjusting module is used for adopting a second modulation mode for modulation when the second temperature is judged to be still beyond the set temperature range; and the data transmission rate corresponding to the second modulation mode is smaller than that of the first modulation mode.
9. The cable modem control apparatus of claim 8, wherein the second temperature adjustment module comprises:
the channel number judging unit is used for judging whether the number of the bound channels is equal to 1 or not when the second temperature is judged to be still beyond the set temperature range, and if so, modulating in the second modulation mode; otherwise, the number of bonded lanes is reduced to 1.
10. The cable modem control apparatus of claim 8, wherein the second temperature adjustment module comprises:
a second temperature adjustment request transmitting unit, configured to transmit a second temperature adjustment request signal to the cable modem terminal system when it is determined that the second temperature still exceeds the set temperature range;
and the modulation mode adjusting unit is used for adopting the second modulation mode for modulation under the control of the cable modem terminal system.
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| US7200512B2 (en) * | 2001-02-16 | 2007-04-03 | Sierra Wireless, Inc. | Method for avoiding peak temperatures in communication devices |
| CN102025533B (en) * | 2010-11-04 | 2015-11-25 | 华为终端有限公司 | A kind of main control unit, network processing unit, overheat protecting system and method |
| JP6004927B2 (en) * | 2012-12-07 | 2016-10-12 | キヤノン株式会社 | Information processing apparatus, control method thereof, and program |
| CN105051645B (en) * | 2013-06-17 | 2020-05-19 | 高通股份有限公司 | Thermal mitigation in dual subscription dual active devices |
| CN104980233B (en) * | 2014-04-01 | 2017-09-12 | 国基电子（上海）有限公司 | Modem and its method for calibrating power |
| US9785157B2 (en) * | 2015-03-30 | 2017-10-10 | Mediatek Inc. | Method for controlling circuit modules within chip and associated system on chip |
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