CN106878576B - Cable modem control method and device - Google Patents

Abstract

This invention relates to a cable modem control method and apparatus, applied to a cable modem, wherein the cable modem can transmit data with a cable modem terminal system using channel bundling technology. The cable modem control method includes: acquiring a first temperature of the cable modem in real time; and, if the first temperature exceeds a set temperature range, reducing the number of bundled channels. This reduces the amount of data processed by the cable modem's CPU per unit time, lowers the CPU's power consumption, and thus reduces the probability of the temperature exceeding the cable modem's suitable operating temperature range.

Description

Cable modem control method and device

technical field

The invention relates to the field of communication technology, in particular to a cable modem control method and device.

Background technique

Cable modem, also known as cable modem, English name Cable Modem, it is developed with the expansion of network applications in recent years, mainly used in cable TV network for data transmission. It adopts high-efficiency digital modulation technology and digital compression technology, which greatly improves the channel capacity of the cable TV system without requiring a major update of the system. Therefore, the cable TV system can provide more, richer and better quality In addition to TV programs, there are enough frequency band resources to provide other non-broadcasting services. The cable TV system has begun to develop in the direction of interactive two-way and integrated services, transitioning from narrowband to broadband.

However, the allowable operating temperature of the cable modem is usually between 0°C and 40°C. Once the temperature exceeds the suitable operating temperature range of the cable modem, it may cause the CPU of the cable modem to overheat, so that the cable modem cannot work normally. It may cause accidents such as fire.

Contents of the invention

Based on this, it is necessary to provide a cable modem control method and device for the problem of how to reduce the probability that the temperature exceeds the temperature range suitable for the cable modem to work.

A cable modem control method, applied to a cable modem, and the cable modem utilizes channel bundling technology to perform data transmission with a cable modem terminal system; the cable modem control method includes:

obtaining the first temperature of the cable modem in real time;

When it is determined that the first temperature exceeds the set temperature range, the number of bound channels is reduced.

In one of the embodiments, the cable modem performs modulation using a first modulation method; and, after determining that the first temperature exceeds a set temperature range, after the step of reducing the number of bonded channels, the cable modem Control methods also include:

obtaining a second temperature of the cable modem;

When it is determined that the second temperature still exceeds the set temperature range, a second modulation method is used for modulation; wherein, the data transmission rate corresponding to the second modulation method is lower than that of the first modulation method.

In one of the embodiments, when it is determined that the second temperature still exceeds the set temperature range, the step of adopting the second modulation method for modulation includes:

When determining that the second temperature still exceeds the set temperature range, determine whether the number of bound channels is equal to 1, if so, adopt the second modulation method for modulation; otherwise, reduce the number of bound channels to 1 .

In one of the embodiments, when it is determined that the second temperature still exceeds the set temperature range, the step of adopting the second modulation method for modulation includes:

When determining that the second temperature still exceeds the set temperature range, sending a second temperature adjustment request signal to the cable modem termination system;

Under the control of the cable modem terminal system, the second modulation mode is adopted for modulation.

In one of the embodiments, the step of acquiring the first temperature of the cable modem in real time comprises:

The first temperature of the cable modem is obtained in real time through the thermal element.

In one of the embodiments, when it is determined that the first temperature exceeds the set temperature range, the step of reducing the number of bound channels includes:

When it is determined that the first temperature exceeds the set temperature range, sending a first temperature adjustment request signal to the cable modem terminal system;

The number of bonded channels is reduced under the control of the cable modem termination system.

A cable modem control device is applied to a cable modem, and the cable modem utilizes channel bundling technology to perform data transmission with a cable modem terminal system; the cable modem control device includes:

a first temperature acquisition module, configured to acquire the first temperature of the cable modem in real time;

The first temperature adjustment module is configured to reduce the number of bound channels when it is determined that the first temperature exceeds the set temperature range.

In one of the embodiments, the cable modem uses a first modulation method to perform modulation; and, the cable modem control device further includes:

a second temperature obtaining module, configured to obtain a second temperature of the cable modem;

The second temperature adjustment module is configured to adopt a second modulation method for modulation when it is determined that the second temperature still exceeds the set temperature range; wherein, the data transmission rate corresponding to the second modulation method is lower than the first 1. Modulation mode.

In one of the embodiments, the second temperature adjustment module includes:

A channel number judging unit, configured to determine whether the number of bound channels is equal to 1 when it is determined that the second temperature still exceeds the set temperature range, and if so, adopt the second modulation method for modulation; otherwise, set The number of bound channels is reduced to 1.

In one of the embodiments, the second temperature adjustment module includes:

A second temperature adjustment request sending unit, configured to send 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;

The modulation mode adjustment unit is configured to adopt the second modulation mode for modulation under the control of the cable modem terminal system.

The beneficial effects of the above cable modem control method and device are: in the cable modem control method and device, the first temperature of the cable modem is obtained in real time, and when it is determined that the first temperature exceeds the set temperature range, the binding rate is reduced. The number of channels can reduce the amount of data processed by the CPU of the cable modem per unit time, reduce the power consumption of the CPU of the cable modem, and thus reduce the probability that the temperature exceeds the suitable temperature range for the cable modem.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain the drawings of other embodiments according to these drawings without creative work.

Fig. 1 is a flowchart of a cable modem control method provided by an embodiment;

Fig. 2 is one of the specific implementation circuit diagrams involved in step S100 in the cable modulation and demodulation method of the embodiment shown in Fig. 1;

FIG. 3 is a specific implementation flowchart of step S200 in the cable modem control method of the embodiment shown in FIG. 1;

FIG. 4 is a schematic diagram of steps additionally included in one of the specific implementation manners of the cable modem control method of the embodiment shown in FIG. 1;

FIG. 5 is a specific implementation flowchart of step S400 in the cable modem control method of the embodiment shown in FIG. 4;

Fig. 6 is a block diagram of a cable modem control device provided by another embodiment.

Detailed ways

In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terminology used herein in the description of the invention is for the purpose of describing specific embodiments only, and is not intended to limit the present 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 the cable modem, that is, can be executed by the cable modem, and the cable modem uses channel bonding technology to perform data transmission with the cable modem terminal system.

Among them, the channel bundling technology is a technology adopted in the DOCSIS3.0 (Data Over Cable Service Interface Specification 3.0) standard, that is, several channels are bundled together, and it is completed in the physical layer and the MAC (Media Access Control, Media Access Control) layer. Therefore, the uplink and downlink rate and bandwidth can be improved, so the cable modem in the embodiment of the present invention is at least applicable to the DOCSIS 3.0 standard. The cable modem terminal system, CMTS (Cable Modem Terminal Systems), is a device for managing and controlling the cable modem. Its configuration can be completed through the Console interface or the Ethernet interface. The configuration content mainly includes: downlink frequency, downlink modulation mode, downlink level, etc.

As shown in FIG. 1 , the cable modem control method provided by the embodiment of the present invention includes the following contents.

Step S100. Obtain the 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 the temperature of the CPU in the cable modem.

Step S200. When it is determined that the first temperature exceeds the set temperature range, reduce the number of bound channels.

Wherein, the set temperature range refers to a temperature range that can ensure normal operation of the cable modem. Reducing the number of bound channels means reducing the number of channels that can communicate between the cable modem and the cable modem terminal system. The method of reducing the DOCSIS version can be adopted. For example: if the cable modem currently uses the channel corresponding to the DOCSIS3.1 standard , then it can be changed to the channel corresponding to the DOCSIS3.0 standard, thereby reducing the 24 downstream channels to 16 or 8. If the number of bonded channels decreases, the upstream and downstream rates will decrease, thereby reducing the amount of data processed by the cable modem's CPU 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 bound channels is reduced, which can reduce the amount of data processed by the CPU of the cable modem per unit time, thereby reducing the speed of the cable modem. The power consumption of the CPU can be reduced, thereby reducing the probability of occurrence of temperatures exceeding the temperature range in which the cable modem is suitable for operation.

In one of the embodiments, step S100 includes: acquiring the first temperature of the cable modem in real time through a thermal element.

Wherein, the thermosensitive element is made of a sensitive material whose physical properties of certain objects change with temperature, and the thermosensitive element may be, for example, a thermistor, a thermal sensor, or the like. In a specific implementation, the heat sensitive element can be placed in the area where the CPU of the cable modem 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. It should be noted that the CPU in FIG. 2 refers to the CPU of the cable modem. Wherein, one end of the thermistor RT1 is connected to an AD (data) pin of the CPU, and the other end of the thermistor RT1 and one end of the capacitor C1 are commonly grounded. The other end of the capacitor C1 and one end of the resistor R1 are respectively connected to the common end of the CPU and the thermistor RT1. The other end of the resistor R1 is connected to the power supply VCC. Wherein, resistor R1 is a pull-up resistor. Capacitor C1 is used for filtering. The thermistor RT1 is used to detect the temperature of the CPU. When the temperature of the CPU changes, the resistance of the thermistor RT1 will change accordingly, so that the voltage at the common end of the CPU and the thermistor RT1 will change accordingly. Therefore, the detection circuit The temperature can be converted into an analog voltage, so that the CPU can detect the actual temperature of the CPU in real time.

It can be understood that other ways can also be used to obtain the first temperature of the cable modem, for example, a thermometer can be used.

In one embodiment, step S200 includes the following content, please refer to FIG. 3 .

Step S210. Sending a first temperature adjustment request signal to the cable modem terminal system when it is determined that the first temperature exceeds the set temperature range.

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, hybrid fiber-coaxial cable network) network.

Step S220. Under the control of the cable modem termination system, reduce the number of bonded channels.

In the embodiment of the present invention, after receiving the first temperature adjustment request signal, the cable modem terminal system sends a corresponding control signal to the cable modem, thereby controlling the cable modem to reduce the number of bound channels.

In one of the embodiments, said cable modem is modulated using a first modulation scheme. Wherein, the first modulation mode corresponds to the modulation mode of the uplink signal, which means that the cable modem modulates the data transmitted from the user's PC to send to the cable modem terminal system through the HFC network. Moreover, after step S200, the cable modem control method further includes the following content, please refer to FIG. 4 .

Step S300. Obtain the second temperature of the cable modem.

Wherein, the second temperature refers to the real-time temperature after the cable modem executes the above step S200.

Step S400. When it is determined that the second temperature still exceeds the set temperature range, adopt a second modulation method for modulation. Wherein, the data transmission rate corresponding to the second modulation mode is smaller than that of the first modulation mode.

In the embodiment of the present invention, if the temperature of the cable modem cannot be lowered to the set temperature range by reducing the number of bonded channels, the modulation mode may be changed to further reduce the temperature. The data transmission rate corresponding to the second modulation mode is smaller than the first modulation mode, in other words, the second modulation mode is simpler than the modulation mode of the first modulation mode, thereby reducing the data transmission rate, and then reducing the CPU of the cable modem. power consumption. For example, the first modulation mode is 16QAM (Quadrature Amplitude Modulation, quadrature amplitude modulation), and the second modulation mode is QPSK (Quadrature Phase Shift Keyin, quadrature phase shift keying) modulation.

Specifically, step S400 includes: when it is determined that the second temperature still exceeds the set temperature range, it is determined whether the number of bound channels is equal to 1, and if so, adopts the second modulation method for modulation; otherwise, binds The number of specified channels is reduced to 1.

In other words, if the second temperature still exceeds the set temperature range after step S200 is executed, firstly determine whether the number of bound channels is reduced to the minimum (that is, 1 channel), and if so, take the second temperature. modulation mode, otherwise, continue to reduce the number of bound channels until it is reduced to 1 channel. Since the power consumption corresponding to the number of channels is greater than that of the modulation mode, the embodiments of the present invention first adopt a method of reducing the number of bound channels, which can quickly achieve the purpose of reducing the temperature. Moreover, when the number of bonded 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, thereby further improving the reliability of the cable modem.

Specifically, step S400 includes the following contents, please refer to FIG. 5 .

Step S410. When it is determined that the second temperature is still beyond the set temperature range, sending a second temperature adjustment request signal to the cable modem terminal system.

Wherein, the cable modem sends the second temperature adjustment request signal to the cable modem terminal system through the HFC network.

Step S420. Under the control of the cable modem terminal system, adopt the second modulation mode for modulation.

Wherein, when the cable modem terminal system receives the second temperature adjustment request signal, it sends a corresponding control signal to the cable modem, so as to control the cable modem to adopt the second modulation mode for modulation.

Further, the cable modem terminal system can also simplify the modulation method corresponding to the downlink signal sent to the cable modem, for example, it can be changed from 256QAM to 64QAM, so that the cable modem can be demodulated in a correspondingly simplified demodulation method, and can further reduce The power consumption of the cable modem's CPU.

In another embodiment, a cable modem control device is provided, which is applied to a cable modem, and the cable modem uses channel bonding technology to perform data transmission with a cable modem terminal system. The cable modem control device includes the following contents, please refer to FIG. 6 .

The first temperature acquiring module 100 is configured to acquire the first temperature of the cable modem in real time.

The first temperature adjustment 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 of the embodiments, said cable modem is modulated using a first modulation scheme. And, the cable modem control device also includes:

a second temperature obtaining module, configured to obtain a second temperature of the cable modem;

The second temperature adjustment module is configured to adopt a second modulation method for modulation when it is determined that the second temperature still exceeds the set temperature range; wherein, the data transmission rate corresponding to the second modulation method is lower than the first 1. Modulation mode.

In one of the embodiments, the second temperature adjustment module includes: a channel number judging unit, configured to determine whether the number of bound channels is equal to 1 when it is determined that the second temperature still exceeds the set temperature range , if yes, adopt the second modulation mode for modulation; otherwise, reduce the number of bound channels to 1.

In one of the embodiments, the second temperature adjustment module includes:

The second temperature adjustment request sending unit is configured to send 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.

The modulation mode adjustment unit is configured to adopt the second modulation mode for modulation under the control of the cable modem terminal system.

It should be noted that the device for controlling a cable modem provided in this embodiment corresponds to the method for controlling a cable modem provided in the previous embodiment, so details will not be repeated here.

Fig. 1, Fig. 3 to Fig. 5 are schematic flow charts of the method of the embodiment of the present invention. It should be understood that although the various steps in the flow charts in FIG. 1 , FIG. 3 to FIG. 5 are displayed sequentially as indicated by the arrows, these steps are not necessarily executed sequentially in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some of the steps in Fig. 1, Fig. 3 to Fig. 5 may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily executed at the same time, but may be executed at different moments, which The order of execution is not necessarily performed sequentially, but may be performed alternately or alternately with at least a part of other steps or sub-steps or stages of other steps.

The various technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the various technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but should not be construed as limiting the patent scope of the invention. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (10)

1. A cable modem control method is applied to a cable modem, and the cable modem utilizes channel binding technology to carry out data transmission with the cable modem terminal system; it is characterized in that the cable modem control method comprises: obtaining the first temperature of the cable modem in real time; When it is determined that the first temperature exceeds the set temperature range, reduce the number of bound channels; Reducing the number of bound channels means reducing the number of channels capable of communicating between the cable modem and the cable modem terminal system, reducing the amount of data processed by the CPU of the cable modem per unit time; Among them, the channel bundling technology is a technology adopted in the cable data service interface specification 3.0 standard, that is, several channels are bundled together, and it is completed in the physical layer and the media access control layer. 2. The cable modem control method according to claim 1, characterized in that, the cable modem utilizes a first modulation method to modulate; and, when it is determined that the first temperature exceeds a set temperature range, the binding is reduced. After the step of the number of channels, the cable modem control method further includes: obtaining a second temperature of the cable modem; When it is determined that the second temperature still exceeds the set temperature range, a second modulation method is used for modulation; wherein, the data transmission rate corresponding to the second modulation method is lower than that of the first modulation method. 3. The cable modem control method according to claim 2, wherein, when it is determined that the second temperature still exceeds the set temperature range, the step of adopting a second modulation method to modulate comprises: When determining that the second temperature still exceeds the set temperature range, determine whether the number of bound channels is equal to 1, if so, adopt the second modulation method for modulation; otherwise, reduce the number of bound channels to 1 . 4. The cable modem control method according to claim 2, wherein, when it is determined that the second temperature still exceeds the set temperature range, the step of adopting a second modulation method to modulate comprises: When determining that the second temperature still exceeds the set temperature range, sending a second temperature adjustment request signal to the cable modem termination system; Under the control of the cable modem terminal system, the second modulation mode is adopted for modulation. 5. The cable modem control method according to any one of claims 1 to 4, wherein the step of obtaining the first temperature of the cable modem in real time comprises: The first temperature of the cable modem is obtained in real time through the thermal element. 6. The cable modem control method according to any one of claims 1 to 4, wherein, when it is determined that the first temperature exceeds a set temperature range, the step of reducing the number of bound channels comprises: When it is determined that the first temperature exceeds the set temperature range, sending a first temperature adjustment request signal to the cable modem terminal system; The number of bonded channels is reduced under the control of the cable modem termination system. 7. A cable modem control device is applied to a cable modem, and the cable modem utilizes channel bundling technology to carry out data transmission with the cable modem terminal system; it is characterized in that the cable modem control device comprises: a first temperature acquisition module, configured to acquire the first temperature of the cable modem in real time; The first temperature adjustment module is used to reduce the number of bound channels when it is determined that the first temperature exceeds the set temperature range; reducing the number of bound channels means reducing the number of connections between the cable modem and the cable modem. The number of channels capable of communicating between terminal systems, reducing the amount of data processed by the CPU of the cable modem per unit time; Among them, the channel bundling technology is a technology adopted in the cable data service interface specification 3.0 standard, that is, several channels are bundled together, and it is completed in the physical layer and the media access control layer. 8. The cable modem control device according to claim 7, wherein the cable modem is modulated using a first modulation method; and, the cable modem control device further comprises: a second temperature obtaining module, configured to obtain a second temperature of the cable modem; The second temperature adjustment module is configured to adopt a second modulation method for modulation when it is determined that the second temperature still exceeds the set temperature range; wherein, the data transmission rate corresponding to the second modulation method is lower than the first 1. Modulation mode. 9. The cable modem control device according to claim 8, wherein the second temperature regulation module comprises: A channel number judging unit, configured to determine whether the number of bound channels is equal to 1 when it is determined that the second temperature still exceeds the set temperature range, and if so, adopt the second modulation method for modulation; otherwise, set The number of bound channels is reduced to 1. 10. The cable modem control device according to claim 8, wherein the second temperature regulation module comprises: A second temperature adjustment request sending unit, configured to send 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; The modulation mode adjustment unit is configured to adopt the second modulation mode for modulation under the control of the cable modem terminal system.