WO2012109938A2

WO2012109938A2 - Method, device and system for remote power supply in coaxial network

Info

Publication number: WO2012109938A2
Application number: PCT/CN2011/083462
Authority: WO
Inventors: 高兴国
Original assignee: 华为技术有限公司
Priority date: 2011-12-05
Filing date: 2011-12-05
Publication date: 2012-08-23
Also published as: CN103250373A; WO2012109938A3

Abstract

Disclosed is a method, a device and a system for remote power supply in a coaxial network, which belong to the field of communication technology, and are designed to solve the problem in the prior art that when a local power supply source in a user's home is cut off, the reliability of realization of services of a terminal device in the coaxial network decreases, thus preventing access to the voice service and emergency service among other important services. The method for remote power supply in a coaxial network comprises: obtaining a remote power supply voltage coupled to the coaxial network, the remote power supply voltage being generated by a remotely located headend device and coupled to the coaxial network; and supplying power using the remote power supply voltage as a power supply source.

Description

Remote power supply method, device and system for coaxial network

The present invention relates to the field of communications technologies, and in particular, to a remote power supply method, apparatus, and system for a coaxial network.

Background technique

With the development of the coaxial network, the coaxial network not only carries the traditional video services, but also provides data services and voice services, and may even involve some emergency services such as home security alarms. From a business perspective, voice services and emergency services are important services, and the reliability requirements are very high. Even if the system is powered off, voice services and emergency services must be able to work normally for a certain period of time to ensure security monitoring in the home. When a user has an emergency, they can get help in time by phone.

The voice service and the emergency service of the coaxial network are mainly implemented by the terminal equipment in the user's home, and the general terminal equipment is powered by the local AC power supply in the user's home. Therefore, in order to solve the problem that the voice service cannot be realized after the AC power failure in the user's home, it is required. The terminal device has a backup function to ensure that the voice service and the emergency service can still be implemented normally after the AC power failure in the user's home.

The current standby function of the terminal device is implemented by adding a rechargeable battery to the terminal device; when the terminal device is powered by the local power supply, the rechargeable battery is in a charging state; when the power supply of the local power supply in the user's home is interrupted, that is, after the terminal device is powered off Then, the terminal device is powered by the rechargeable battery to ensure the normal implementation of the voice service and the emergency service.

When powering the terminal device in the coaxial network in the above manner, it is necessary to add a charging battery and a charging circuit to the terminal device, thereby increasing the cost of the terminal device; and even if the charging device is used to supply power to the terminal device, when charging the battery After the power is exhausted, the terminal device is also powered down, so that the terminal device cannot implement voice services and emergency services. Summary of the invention

Embodiments of the present invention provide a remote power supply method, apparatus, and system for a coaxial network. In order to achieve the above object, the embodiment of the present invention adopts the following technical solutions:

A remote power supply method for a coaxial network, comprising: Acquiring a remote supply voltage coupled to the coaxial network, the remote supply voltage being generated by the remote head end device and coupled to the coaxial network; a head end device comprising:

a remote power supply unit for generating a remote supply voltage;

And a coupling unit, configured to couple the remote power supply voltage to the coaxial network, so that the terminal device acquires the remote power supply voltage, and supplies the remote power supply voltage to the terminal device as a power supply source of the terminal device.

A terminal device, comprising:

a remote power take-off unit, configured to acquire a remote power supply voltage coupled on the coaxial network, where the remote power supply voltage is generated by the head end device;

And a power supply unit, configured to supply the remote power supply voltage as a power supply of the terminal device to supply power to the terminal device.

A remote power supply system for a coaxial network, comprising: a head end device and at least one terminal device.

The head end device is configured to generate a remote power supply voltage; the remote power supply voltage is coupled to the coaxial network, so that the terminal device acquires the remote power supply voltage, and the remote power supply voltage is used as the power supply of the terminal device The power supply supplies power to the terminal device.

The terminal device is configured to acquire a remote power supply voltage coupled on the coaxial network, where the remote power supply voltage is generated by the head end device; and the remote power supply voltage is used as a power supply power of the terminal device to supply power to the terminal device.

The remote power supply method, device and system for a coaxial network provided by the embodiment of the present invention generate a remote power supply voltage through a head end device, and couple the remote power supply voltage to the coaxial network, and the terminal device acquires coupling on the coaxial network. The remote power supply voltage is used as the power supply source to supply power to the terminal device, so that the terminal device can be powered by the stable power source in the head end device, thereby avoiding the problem that the voice service and the emergency service cannot be realized after the power failure. , improve the reliability of the terminal equipment. BRIEF DESCRIPTION OF THE DRAWINGS The drawings used in the description of the embodiments are briefly described, and it will be apparent that the following description The drawings are only some of the embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative work.

1 is a flowchart of a remote power supply method for a coaxial network according to an embodiment of the present invention; FIG. 2 is a schematic structural diagram of a head end device in a remote power supply device of a coaxial network according to an embodiment of the present invention;

3 is a schematic structural diagram of a terminal device in a remote power supply device of a coaxial network according to an embodiment of the present invention;

5 is a flowchart of remote power supply of a head end device in a remote power supply system of a coaxial network according to an embodiment of the present invention;

FIG. 6 is a flowchart of remote power supply of a terminal device in a remote power supply system of a coaxial network according to an embodiment of the present invention. detailed description

A remote power supply method, apparatus and system for a coaxial network according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

It should be understood that the described embodiments are only a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

A remote power supply method for a coaxial network, as shown in FIG. 1, includes:

100. Acquire a remote power supply voltage coupled on the coaxial network, where the remote power supply voltage is generated by a remote head end device and coupled to the coaxial network; in the coaxial network, the head end device passes through the telecommunication network. The independent power supply is used for power supply. The independent power supply is more reliable than the user's home. Even when the local power supply in the user's home is powered off, the head end equipment can also be powered. The head end equipment passes the voltage of the independent power supply. Transforming produces a remote supply voltage, which is DC or 氐 frequency AC. The head end device couples the generated remote power supply voltage to the coaxial cable of the coaxial network for transmission, so that the terminal device of the coaxial network acquires the remote power supply voltage as the power supply voltage of the terminal device, and supplies power to the terminal device.

In the coaxial network, the terminal device acquires a remote power supply voltage coupled to the coaxial cable, and the remote power supply voltage; after the terminal device acquires the remote power supply voltage, the remote power supply voltage is used as the power supply.

The power supply of the remote power supply voltage as the power supply of the terminal device for the terminal device is specifically as follows:

The remote power supply voltage is transformed, and the transformed remote power supply voltage is used as power supply for the terminal device to supply power to the terminal device.

When the terminal device obtains the remote power supply voltage, the voltage value of the remote power supply voltage is high and cannot be directly used; therefore, in the terminal device, the remote power supply voltage as the power supply source needs to be transformed so that the remote power supply voltage is suitable for The terminal device, in turn, supplies power to the terminal device.

A remote power supply method for a coaxial network according to an embodiment of the present invention generates a remote power supply voltage through a head end device, and couples a remote power supply voltage to a coaxial network, and the terminal device acquires a remote power supply voltage coupled to the coaxial network. The remote power supply voltage is used as a power supply to supply power to the terminal device, thereby realizing power supply to the terminal device by using a stable power source in the head end device. In the coaxial network, in the process of supplying power to the terminal device through the remote power supply voltage in the coaxial cable, in order to enable the terminal device to implement the service, the method further includes:

The headend device generates a data signal and transmits the data signal over the coaxial network. The services include voice services and emergency services as important services, and data services and video services as non-essential services.

Among them, in the coaxial cable of the coaxial network, the data signal for realizing the service is generally an analog signal of 5 megahertz (MegaHertz, hereinafter referred to as MHz) to 1 GHz (Gigahertz, hereinafter referred to as GHz). In practical applications, the head end equipment generates remote power supply voltage and data signals, and transmits them through a coaxial cable in a coaxial network; wherein the remote power supply voltage is direct current or low frequency alternating current, and the data signal is a high frequency electrical signal; The remote power supply voltage and the data signal in the coaxial cable are filtered to obtain the remote power supply voltage and the data signal respectively;

After the terminal device obtains the data signal, the corresponding service is implemented after parsing. For example, the data signal sent by the head end device through the coaxial cable includes data required for the terminal device to perform video service; the terminal device acquires the data signal in the coaxial network by DC filtering, and parses the data signal to execute Video business.

When the head end device supplies power to the terminal device through a remote power supply voltage coupled on the coaxial cable in the coaxial network, the data signal is transmitted through the coaxial cable, so that the terminal device realizes the service, and thus the terminal device is remotely powered. The reliability of the business implementation is guaranteed. For a terminal device installed in a user's home, it is possible to perform a plurality of services at the same time, thereby consuming a large amount of power. When the plurality of terminal devices are simultaneously powered remotely in the coaxial network, the power consumption of the head end device is excessive. In order to avoid the above problem, in addition to the above, the remote power supply voltage is used as the power supply of the terminal device to supply power to the terminal device, and the method further includes:

If the local supply voltage is not detected, the remote supply voltage is switched.

In practical applications, the terminal device is mainly powered by the local power supply located in the user's home as the main power supply of the terminal device. When the terminal device detects the local power supply voltage provided by the local power supply, the local power supply is used. The terminal device performs power supply. At this time, the terminal device performs important services and non-essential services, and the non-essential services include: data services and video services, where the important services include: voice services and emergency services. When the local power supply in the user's home is powered off, the terminal device cannot detect the local power supply voltage, then switches the remote power supply voltage obtained by the terminal device, and supplies power to the terminal device by transforming the remote power supply voltage. When the terminal device performs the power supply between the remote power supply and the local power supply, the terminal device is preferably powered by the local power supply when the local power supply of the user's home is normal. When the local power supply in the user's home is powered off, the head is passed. The terminal device performs remote power supply, thereby reducing the power consumption of the head end device, avoiding the damage of the head end device, and improving the reliability of the terminal device service execution in the coaxial network.

When there are multiple terminal devices in the coaxial network, in order to further reduce power consumption when the terminal device is remotely powered by the head end device, optionally, after the switching uses the remote power supply voltage, the method further includes:

Abandoning the non-essential services in the parsed data signal and performing important services, including: data services and video services,

The important services include: voice services and emergency services.

After the local power supply in the user's home is powered off, the terminal device switches to use the remote power supply voltage provided by the head end device, and after the voltage transformation, powers the terminal device; at this time, the terminal device continues to acquire the coaxial cable of the coaxial network. The transmitted data signal is parsed; when the related data is executed by the parsed data signal, the terminal device abandons the execution of the non-essential service and performs the important service due to the remote power supply state, thereby reducing the consumption of the terminal device. The power, which in turn reduces the power consumption of the head end equipment, avoids the damage caused by the excessive power consumption of the head end equipment, and improves the execution of important services such as voice service and emergency service when the terminal equipment is interrupted by the user's home. reliability. Corresponding to the remote power supply method of the above-mentioned coaxial network, the present invention further provides a head end device, as shown in FIG. 2, including:

a remote power supply unit for generating a remote supply voltage;

The head end device further includes:

a data processing unit, configured to generate a data signal, and send the data signal through the coaxial network. The present invention also provides a terminal device, as shown in FIG. 3, including:

And a power supply unit, configured to supply the remote power supply voltage as a power supply of the terminal device to supply power to the terminal device. The remote power supply voltage supplies power to the terminal device as a power supply source of the terminal device.

The terminal device further includes:

The switching unit switches to use the remote power supply voltage if a local power supply voltage is not detected. The terminal device further includes:

a business unit, used to abandon the execution of non-essential services in the parsed data signal, and perform important services,

The non-essential services include: data services and video services,

The important services include: voice services and emergency services.

The actual coaxial network system shown in FIG. 4 includes: a data network, an optical line terminal (hereinafter referred to as OLT), an overcurrent distributor, the above-mentioned head end device, and at least one of the foregoing terminals. Device; The OLT implements two-way aggregation and forwarding of optical signals. In an actual application, the data network transmits the data in the optical signal network to the OLT through the optical fiber transmission; the OLT distributes the acquired optical signal to the corresponding head end device, and the head end device receives the optical signal distributed by the OLT. Parsing, converting the optical signal into a digital signal, so that the head end device processes the digital signal; converting the processed digital signal into an analog signal for transmission on the coaxial cable; the analog signal is the head end The data signal generated by the device.

The head end device, as shown in FIG. 2, includes:

a remote power supply unit for generating a remote supply voltage;

And a coupling unit, configured to couple the remote power supply voltage to the coaxial network, so that the terminal device acquires the remote power supply voltage, and supplies the remote power supply voltage to the terminal device as a power supply source of the terminal device. The head end device further includes:

And a data processing unit, configured to generate a data signal, and send the data signal through the coaxial network.

The terminal device, as shown in FIG. 3, includes:

The terminal device further includes:

The non-essential services include: data services and video services,

The important services include: voice services and emergency services. At this time, in the head end device of the coaxial network system, as shown in FIG. 5, the method includes:

500. The remote power supply unit generates a remote power supply voltage.

The remote power supply unit in the head end device transforms the independent power source built in the telecommunication network to generate a remote power supply voltage for the terminal device, and the remote power supply voltage is a direct current or a low frequency alternating current, such as a low frequency alternating current. Then the frequency is at 5 Hz.

501. The coupling unit couples the remote power supply voltage to the coaxial network, so that the terminal device acquires the remote power supply voltage, and uses the remote power supply voltage as a backup power supply source of the terminal device.

The coupling unit in the head end device transmits the remote power supply voltage to the coaxial cable in the coaxial network for transmission, so that the terminal device obtains the remote power supply voltage, and uses the remote power supply voltage as the backup power supply source of the terminal device. . In the process, in the head end device, further, the method further includes:

A data processing unit generates a data signal and transmits the data signal over the coaxial network.

According to the optical signal transmitted through the optical fiber in the data network, the OLT reaches the head end device, and is parsed and processed by the data processing unit in the head end device, and finally converted into an analog signal transmitted in the coaxial cable, and transmitted to the corresponding signal. The terminal device; the analog signal is the data signal, and the frequency range is generally 5MHz-lGHz, but is not limited to this range.

When the local power supply in the user's home works normally, the local power supply is transformed by the power supply unit in the terminal device, and the local power supply is performed; at this time, the terminal device continuously receives the data signal and the remote power supply transmitted in the coaxial cable. Voltage; wherein the terminal device obtains the remote power supply voltage as the backup power supply through the AC filter, but when the local power supply is normally powered in the user's home, the local power supply is first performed by the local power supply; and the data signal obtained by the DC filter is used by the terminal. The service unit of the device performs parsing, and performs corresponding services according to the parsed data signal. The service includes a video service, a voice service, a data service, and an emergency service, where the video service enables the terminal device to have a video playback function, for example, the terminal device can be a digital TV set-top box; and the voice service enables the terminal device to have a remote call function. For example, the terminal device may be a telephone; the data service enables the terminal device to have a transmission function of the internet data, and the terminal device may be a modem; and the emergency service enables the terminal device to have a function related to security monitoring of the smart home.

After the local power supply in the user's home is powered off, in the terminal device, as shown in FIG. 6, the method includes:

600. The remote power take-off unit acquires a remote power supply voltage coupled on the coaxial network, and the remote power supply voltage is generated by the head end device.

601. The power supply unit supplies the remote power supply voltage as a power supply of the terminal device to supply power to the terminal device.

After the terminal device is started, the local power supply voltage provided by the local power supply is detected. If the local power supply voltage can be detected, the terminal device supplies power through the local power supply; when the local power supply is powered off, the terminal device cannot detect the terminal device. The local power supply voltage provided by the local power supply, the terminal device is switched by the switching unit to provide the use of the head end device The remote power supply voltage; the terminal device supplies power to the terminal device according to the obtained remote power supply voltage, specifically:

The remote power supply voltage is transformed, and the transformed remote power supply voltage is used as a power supply source of the terminal device to supply power to the terminal device. The remote power supply voltage needs to be transmitted on the coaxial cable. In order to reduce the power consumption caused by the transmission of the coaxial cable, the voltage value of the remote power supply voltage is relatively high; therefore, when the terminal device is powered by the remote power supply voltage, the terminal needs to pass through the terminal. The power supply unit in the device transforms the remote supply voltage to make it suitable for the terminal device.

In the coaxial network system, when the terminal device performs all services, the power consumption is large; when there are multiple terminal devices in the coaxial network, if each terminal device performs remote power supply through the head end device to perform all services , the power consumption of the head end equipment is beyond the range that it can withstand, thereby causing damage to the head end equipment and reducing the reliability of the coaxial network; therefore, in order to reduce the power consumption of the head end equipment, further, After switching the power supply to the terminal device by using the remote power supply voltage, the terminal device further includes:

The business unit abandons the non-essential business in the parsed data signal and performs important business,

The non-essential services include: data services and video services,

The important services include: voice services and emergency services.

The terminal device acquires the data signal transmitted on the coaxial cable in the coaxial network, and parses the service unit to perform the corresponding service; when the local power supply in the user's home is disconnected, in order to reduce the power consumption of the head end device, The service unit of the terminal device abandons execution by shutting down non-essential services such as data services and video services, and retains important services such as voice services and emergency services, so as to keep the telephones in the homes and the security monitoring devices in the smart homes running normally. In the coaxial network system, the terminal device can be remotely powered completely through the head end device according to the actual situation, that is, the remote power supply voltage is used as the main power supply, for example, when there is a terminal device in the coaxial network, The terminal device can be remotely powered by the headend device. In general, the terminal device is preferred to be local The terminal device implements all services. When the local power supply is powered off, the remote power supply voltage coupled to the coaxial cable is used for power supply, that is, the backup power supply is used to ensure reliable implementation of important services in the terminal device. The remote power supply method, device and system for a coaxial network provided by the embodiment of the present invention generate a remote power supply voltage through a head end device, and couple the remote power supply voltage to the coaxial network, and the terminal device acquires coupling on the coaxial network. The remote power supply voltage is used as the power supply source to supply power to the terminal device, so that the terminal device can be powered by the stable power source in the head end device, thereby avoiding the problem that the voice service and the emergency service cannot be realized after the power failure. , improve the reliability of the terminal equipment. The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Claims

Claim

A remote power supply method for a coaxial network, comprising:

Acquiring a remote supply voltage coupled to the coaxial network, the remote supply voltage being generated by the remote head end device and coupled to the coaxial network;

2. The method according to claim 1, wherein the power supply by using the remote power supply voltage as a power supply is:

The remote power supply voltage is transformed, and the remotely supplied voltage after the voltage transformation is supplied as a power source.

The method according to claim 2, further comprising: before the powering the remote power supply voltage as a power supply,

4. The method according to claim 3, further comprising:

Generating a data signal and transmitting the data signal over the coaxial network.

The method according to claim 4, further comprising: after the switching uses the remote power supply voltage, further comprising:

Acquiring and parsing the data signal transmitted by the coaxial network, discarding non-essential services in the parsed data signal, and performing important services,

The non-essential services include: data services and video services,

The important services include: voice services and emergency services.

6. A head end device, comprising:

a remote power supply unit for generating a remote supply voltage;

And a coupling unit, configured to couple the remote power supply voltage to the coaxial network, so that the terminal device obtains the remote power supply voltage, and supplies the remote power supply voltage as power supply of the terminal device to the terminal device.

7. The head end device according to claim 6, further comprising: a data processing unit configured to generate a data signal and transmit the data signal through the coaxial network.

8. A terminal device, comprising: a remote power take-off unit, configured to acquire a remote power supply voltage coupled on the coaxial network, where the remote power supply voltage is generated by the head end device;

And a power supply unit, configured to supply the remote power supply voltage as a power supply of the terminal device to the terminal device.

The terminal device according to claim 8, wherein the power supply unit is specifically configured to transform the remote power supply voltage, and the remotely supplied voltage after the voltage transformation is used as a power supply source of the terminal device. The terminal device supplies power.

10. The terminal device according to claim 9, further comprising: a switching unit that switches to use the remote power supply voltage if a local power supply voltage is not detected.

The terminal device according to claim 10, further comprising: a service unit, configured to abandon execution of non-essential services in the parsed data signal, and perform important services,

The non-essential services include: data services and video services,

The important services include: voice services and emergency services.

12. A remote power supply system for a coaxial network, comprising: a head end device according to claims 6-7 and at least one terminal device according to claims 8-11.