CN112118070B - Control method of forwarding network, network equipment and system - Google Patents
Control method of forwarding network, network equipment and system Download PDFInfo
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- CN112118070B CN112118070B CN201910539229.5A CN201910539229A CN112118070B CN 112118070 B CN112118070 B CN 112118070B CN 201910539229 A CN201910539229 A CN 201910539229A CN 112118070 B CN112118070 B CN 112118070B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2575—Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2575—Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier
- H04B10/25752—Optical arrangements for wireless networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
- H04J14/0254—Optical medium access
- H04J14/0272—Transmission of OAMP information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0278—WDM optical network architectures
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Abstract
The invention provides a control method, network equipment and a system of a forwarding network, and relates to the technical field of communication. The method is applied to active wavelength division multiplexing WDM equipment and comprises the following steps: acquiring management and control information according to optical signals transmitted by the first optical module and/or the second optical module; and controlling an optical channel according to the control information. The scheme of the invention solves the problem that the forward transmission technology in the prior art is not suitable for a 5G mobile communication system.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method, a network device, and a system for controlling a forwarding network.
Background
Fifth generation (5) th Generation, 5G) Mobile Communication system needs to support multiple services and application scenarios, such as Enhanced Mobile Broadband eMBB (Enhanced Mobile Broadband) service with higher bandwidth and lower delay, mtc (Massive Machine-Type Communication) service supporting Massive user connections, and urrllc (Ultra Reliable) service with Ultra-low delay&Low Latency Communication), and the like. It is anticipated that in the 5G era, many new user applications will be introduced, such as: high definition/ultra high definition even 3D holographic films and videos ubiquitous in dense urban areas, high-speed user experience anywhere, high-speed movementMobile applications, sensor networks, touch internet, electronic medical E-Health, natural disaster monitoring, and the like. Among them, the forwarding network has become an important component of the mobile communication transmission network.
The current forward transmission technology mainly realizes that an optical fiber direct drive is adopted, an Active Antenna Unit (AAU) and a Distributed Unit (DU) -Centralized Unit (CU) are directly connected point to point through a forward transmission optical module, a large amount of optical fibers are consumed, and a transmission network management system in the optical fiber direct drive scheme cannot acquire management and control information such as the connection state of an intermediate optical fiber. Therefore, in order to support multiple services and application scene requirements, a large amount of fronthaul optical fibers are consumed, and the deployment, operation and maintenance costs are increased.
Disclosure of Invention
The invention provides a control method, network equipment and a system of a forwarding network, which solve the problem that the forwarding technology in the prior art is not suitable for a 5G mobile communication system.
In order to achieve the above object, an embodiment of the present invention provides a method for controlling a forwarding network, which is applied to an active wavelength division multiplexing WDM apparatus, and includes:
acquiring control information according to optical signals transmitted by the first optical module and/or the second optical module; the first optical module is an optical module on a radio remote unit RRU/an active antenna unit AAU, and the second optical module is an optical module on a baseband processing unit BBU/a distribution unit DU;
and controlling an optical channel according to the control information.
Optionally, the optical signal is a top-modulated signal of an optical layer;
the obtaining of the management and control information according to the optical signal transmitted by the first optical module and/or the second optical module includes:
and amplitude demodulation is carried out on the top modulation signal to obtain the control information.
Optionally, the structure of the management information includes:
identification of the optical channel, information type, information length, information content and reserved field.
Optionally, before obtaining the management and control information according to the optical signal transmitted by the first optical module and/or the second optical module, the method further includes:
sending corresponding configuration information to the first optical module and the second optical module;
and receiving configuration result information correspondingly fed back by the first optical module and the second optical module.
Optionally, the sending the corresponding configuration information to the first optical module and the second optical module includes:
and sending corresponding configuration information to the first optical module and the second optical module by performing amplitude modulation on a top-modulated signal of an optical layer.
Optionally, the receiving configuration result information correspondingly fed back by the first optical module and the second optical module includes:
and obtaining configuration result information correspondingly fed back by the first optical module and the second optical module by carrying out amplitude demodulation on the top-modulated signal of the optical layer.
Optionally, the configuration information includes: at least one of a drive voltage, a drive current, a transmitted optical power, and a received optical power.
Optionally, the configuration result information includes: whether the configuration was successful, and at least one of the following information:
drive voltage, drive current, transmit optical power, and receive optical power.
Optionally, the method further comprises:
and if the configuration result information indicates that the first optical module and the second optical module are both configured successfully, controlling the conduction between the first optical module and the second optical module.
In order to achieve the above object, an embodiment of the present invention further provides a method for controlling a forwarding network, which is applied to an optical module, and includes:
inserting the management and control information into the optical signal;
and transmitting the optical signal to an opposite-end optical module.
Optionally, the optical signal is a top-modulated signal of an optical layer;
the inserting the management and control information into the optical signal includes:
and adjusting the amplitude of the set top signal according to the control information.
Optionally, the structure of the management and control information includes:
identification of the optical channel, information type, information length, information content and reserved field.
Optionally, before the inserting the management and control information into the optical signal, the method further includes:
receiving configuration information sent by active WDM equipment;
feeding back configuration result information to the active WDM device.
Optionally, the receiving the configuration information sent by the active WDM apparatus includes:
and obtaining the configuration information by performing amplitude demodulation on the top-modulated signals of the optical layer.
Optionally, feeding back the configuration result information to the active WDM apparatus includes:
sending the configuration information to the active WDM device by amplitude modulating a top-modulated signal of an optical layer.
Optionally, the configuration information includes: at least one of a drive voltage, a drive current, a transmitted optical power, and a received optical power.
Optionally, the configuration result information includes: whether the configuration was successful, and at least one of the following information:
drive voltage, drive current, transmit optical power, and receive optical power.
To achieve the above object, an embodiment of the present invention further provides a network device, where the network device is an active WDM device, including:
the first processing module is used for obtaining management and control information according to optical signals transmitted by the first optical module and/or the second optical module; the first optical module is an optical module on a radio remote unit RRU/an active antenna unit AAU, and the second optical module is an optical module on a baseband processing unit BBU/a distribution unit DU;
and the control module is used for controlling the optical channel according to the control information.
Optionally, the optical signal is a top-modulated signal of an optical layer;
the first processing module is further configured to:
and carrying out amplitude demodulation on the set top signal to obtain the control information.
Optionally, the structure of the management and control information includes:
identification of the optical channel, information type, information length, information content and reserved field.
Optionally, the network device further includes:
a first sending module, configured to send corresponding configuration information to the first optical module and the second optical module;
and the first receiving module is used for receiving configuration result information correspondingly fed back by the first optical module and the second optical module.
Optionally, the first sending module is further configured to:
and sending corresponding configuration information to the first optical module and the second optical module by performing amplitude modulation on a top-modulated signal of an optical layer.
Optionally, the first receiving module is further configured to:
and obtaining configuration result information correspondingly fed back by the first optical module and the second optical module by amplitude demodulation of the top-modulated signal of the optical layer.
Optionally, the configuration information includes: at least one of a drive voltage, a drive current, a transmitted optical power, and a received optical power.
Optionally, the configuration result information includes: whether the configuration was successful, and at least one of the following information:
drive voltage, drive current, transmit optical power, and receive optical power.
Optionally, the method further comprises:
and the second processing module is configured to control conduction between the first optical module and the second optical module if the configuration result information indicates that both the first optical module and the second optical module are successfully configured.
In order to achieve the above object, an embodiment of the present invention further provides a network device, where the network device is an optical module, and the network device includes:
the third processing module is used for inserting the management and control information into the optical signal;
and the transmission module is used for transmitting the optical signal to the opposite-end optical module.
Optionally, the optical signal is a top-modulated signal of an optical layer;
the third processing module is further configured to:
and adjusting the amplitude of the top-adjusting signal according to the control information.
Optionally, the structure of the management and control information includes:
identification of the optical channel, information type, information length, information content and reserved field.
Optionally, the network device further includes:
the second receiving module is used for receiving the configuration information sent by the active WDM equipment;
and the second sending module is used for feeding back configuration result information to the active WDM equipment.
Optionally, the second receiving module is further configured to:
and obtaining the configuration information by performing amplitude demodulation on the top-modulated signals of the optical layer.
Optionally, the second sending module is further configured to:
sending the configuration information to the active WDM device by amplitude modulating a top-modulated signal of an optical layer.
Optionally, the configuration information includes: at least one of a drive voltage, a drive current, a transmitted optical power, and a received optical power.
Optionally, the configuration result information includes: whether the configuration was successful, and at least one of the following information:
drive voltage, drive current, transmit optical power, and receive optical power.
To achieve the above object, an embodiment of the present invention further provides a forwarding network system, including:
active WDM equipment, passive WDM equipment, RRU/AAU and BBU/DU;
the passive WDM device is connected with the active WDM device through a single optical fiber;
a first optical module is arranged on the RRU/AAU, a second optical module is arranged on the BBU/DU, the first optical module is connected with the passive WDM equipment, and the second optical module is connected with the active WDM equipment; wherein the content of the first and second substances,
the first and/or second light module is configured to: inserting the control information into an optical signal, and transmitting the optical signal to an opposite-end optical module;
the active WDM device is to: and acquiring control information according to the optical signal, and controlling an optical channel according to the control information.
Optionally, the active WDM apparatus is further configured to:
sending corresponding configuration information to the first optical module and the second optical module;
and receiving configuration result information correspondingly fed back by the first optical module and the second optical module.
Optionally, the first and second light modules are further configured to:
receiving configuration information sent by the active WDM equipment;
feeding back configuration result information to the active WDM device.
To achieve the above object, an embodiment of the present invention further provides a network device, including a transceiver, a memory, a processor, and a computer program stored in the memory and executable on the processor; the processor, when executing the computer program, implements a control method as applied to a fronthaul network of active WDM equipment as described above.
To achieve the above object, an embodiment of the present invention further provides a network device, including a transceiver, a memory, a processor, and a computer program stored in the memory and executable on the processor; characterized in that the processor implements the control method as applied to the fronthaul network of optical modules when executing the computer program.
To achieve the above object, an embodiment of the present invention further provides a computer-readable storage medium having a computer program stored thereon, where the computer program is configured to, when executed by a processor, implement a control method applied to a fronthaul network of an active WDM apparatus or implement steps in the control method applied to a fronthaul network of an optical module as above.
The technical scheme of the invention has the following beneficial effects:
the method of the embodiment of the invention enables the active WDM equipment to directly acquire the control information through the optical signal transmitted between the optical modules by adding the active WDM equipment, thereby realizing the control of the optical modules and the links, solving the management problem of the optical fiber network and the optical modules in the fronthaul network of the mobile communication system with low cost and improving the operation and maintenance capability of the network.
Drawings
Fig. 1 is a flowchart of a control method of a forwarding network applied to an active WDM apparatus according to an embodiment of the present invention;
fig. 2 is a flowchart of a control method applied to a fronthaul network of an optical module according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a network device according to an embodiment of the present invention;
fig. 4 is a second schematic structural diagram of a network device according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a network device according to another embodiment of the present invention;
fig. 6 is a second schematic structural diagram of a network device according to another embodiment of the present invention;
fig. 7 is a schematic structural diagram of a network device according to another embodiment of the present invention;
fig. 8 is a schematic structural diagram of a forwarding network system according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided only to help the full understanding of the embodiments of the present invention. Thus, it will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
In various embodiments of the present invention, it should be understood that the sequence numbers of the following processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
In addition, the terms "system" and "network" are often used interchangeably herein.
In the embodiments provided herein, it should be understood that "B corresponding to a" means that B is associated with a from which B can be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may be determined from a and/or other information.
As shown in fig. 1, an embodiment of the present invention provides a method for controlling a forwarding network, which is applied to an active wavelength division multiplexing WDM apparatus or a WDM active apparatus, and specifically includes the following steps:
In the wireless access network system, the forwarding network comprises a plurality of RRUs/AAUs, such as RRUs and/or AAUs; the present embodiment takes AAUs and DUs as examples, and each AAU and DU is configured with an optical module, which may be an optical module with a fixed wavelength or a tunable optical module (i.e., the wavelength of light emitted by the optical module is variable). Different AAUs use different optical wavelengths, and the AAU side can adopt a combiner/splitter of a passive WDM device to multiplex and transmit a plurality of wavelengths from different AAUs so as to save optical fiber resources. The active WDM equipment is connected to the AAU side using a combiner/demultiplexer to demultiplex the wavelengths for processing. Similarly, embodiments applicable to AAU are also applicable to RRU. Different DUs use different optical wavelengths, and the DU side can adopt a combiner/splitter of active WDM equipment to multiplex and transmit a plurality of wavelengths from different DUs so as to save optical fiber resources. The passive WDM equipment is connected to the DU side using a combiner/demultiplexer to demultiplex the wavelengths for processing. Similarly, the embodiments applicable to DUs are also applicable to BBUs. In this embodiment, the optical modules in the AAU and the DU transmit their respective control information via optical signals, and the active WDM equipment can obtain the control information from the optical signals transmitted by the optical modules. Here, the management and control information may be used to indicate the status of the optical module, the status of the optical path, the status of the RRU/AAU, the status of the BBU/DU, and the like. Specifically, the management and control information is implemented by an operation, maintenance and management OAM message.
And 102, controlling an optical channel according to the control information.
In this step, after obtaining the management and control information through the above steps, the active WDM equipment can control the optical channel according to the management and control information. The control object is not limited to the optical channel itself, but also includes devices on the transmission path, such as an optical module, RRU/AAU, BBU/DU, and the like. The specific control mode can be determined by a preset control strategy, and the preset control strategy corresponds to the control information, so that after the current optical channel state is known through the control information, adaptive control can be performed, and the protection of the optical channel is realized.
In some embodiments of the present invention, the active WDM equipment may have a function of monitoring the status of the RRU/AAU, a function of monitoring the status of the BBU/DU, and a function of monitoring the status of the optical module. The states of the devices are various, for example, the states of the optical module include but are not limited to: at least one of a drive voltage, a drive current, a transmitted optical power, and a received optical power. Therefore, in this embodiment, the structure of the management information includes:
identification of the optical channel, information type, information length, information content and reserved field.
Here, the identification ID of the optical channel is a unique identification of the optical channel, and the optical channel to which the obtained management and control information transmission belongs can be determined by the optical channel ID; determining a state item for the obtained management and control information according to the information type; the control information can be accurately obtained through the information length; the current specific state can be known through the information content; and the reserved field may add a new description to the regulatory information. Specifically, the information structure of the management and control information is shown in table 1 below:
| optical channel ID | Type of information | Information length | Information content | Reserved field |
TABLE 1
In this way, the state of the device on the optical channel and/or the transmission path can be clearly understood by the management and control information having the information structure shown in table 1. For example, the management and control information is an OAM message, the OAM message includes connectivity detection, error code detection, etc., the active WDM equipment can know whether the link of the optical channel is interrupted or not through the management and control information, and for the case of interruption or error code, the WDM working link can be switched to the protection link in time, and the link state is reported. Here, the OAM message is sent periodically, that is, the management and control information may be sent periodically, and of course, may also be triggered after the state changes.
In the embodiment of the present invention, optionally, the optical signal transmitted by the optical module is a top-tuning signal of the optical layer, and the sending of the management and control information is realized by performing amplitude modulation on the top-tuning signal. Thus, the optical signal is a top-modulated signal of the optical layer;
step 101 comprises:
and carrying out amplitude demodulation on the set top signal to obtain the control information.
Here, the active WDM equipment extracts the management and control information by demodulating the amplitude of the pilot tone signal of the optical layer transmitted by the optical module.
It should be noted that before the optical module enters the working state, the configuration of the module needs to be completed, for example, for the tunable optical module, the wavelength of the emitted light used for working needs to be determined, and of course, the configuration parameters are not limited to the wavelength of the emitted light. The active WDM device of the embodiment of the invention can have the function of configuring the optical module. Therefore, before step 101, the method further comprises:
sending corresponding configuration information to the first optical module and the second optical module;
and receiving configuration result information correspondingly fed back by the first optical module and the second optical module.
The active WDM equipment sends first configuration information to the first optical module and sends second configuration information to the second optical module, and the first configuration information and the second configuration information may be the same or different. And the first optical module and the second optical module configure parameters thereof according to the received configuration information, and feed back configuration result information after configuration is completed. The active WDM device learns the configuration state of the optical module according to the received first configuration result information fed back by the first optical module and the second configuration result information fed back by the second optical module.
Optionally, the configuration information includes: at least one of a drive voltage, a drive current, a transmitted optical power, and a received optical power.
Optionally, the configuration result information includes: whether the configuration was successful, and at least one of the following information:
drive voltage, drive current, transmit optical power, and receive optical power.
Of course, the configuration information and the configuration result information are not limited to the driving voltage, the driving current, the transmitting optical power and the receiving optical power, and may also include other optical module parameter items, which are not listed here.
For the configuration result information, in this embodiment, the active WDM device may perform parameter verification locally based on the configuration result information, and perform reconfiguration when the verification fails, so as to ensure that the optical module performs configuration according to the requirements of the active WDM device.
Optionally, the sending the corresponding configuration information to the first optical module and the second optical module includes:
and sending corresponding configuration information to the first optical module and the second optical module by performing amplitude modulation on a top-modulated signal of an optical layer.
Here, the active WDM equipment will transmit the configuration information inserted into the optical signal by amplitude modulating the top-modulated signal of the optical layer. The optical module needs to perform amplitude demodulation on the received top-modulated signal of the optical layer to obtain the configuration information.
Optionally, the receiving configuration result information correspondingly fed back by the first optical module and the second optical module includes:
and obtaining configuration result information correspondingly fed back by the first optical module and the second optical module by carrying out amplitude demodulation on the top-modulated signal of the optical layer.
In this step, for the mode that the optical module feeds back the configuration result information by performing amplitude modulation on the top-modulated signal of the optical layer, the configuration result information is obtained by performing amplitude demodulation on the top-modulated signal of the optical layer.
After the two side optical modules are configured, the two side optical modules can be conducted. Optionally, the method further comprises:
and if the configuration result information indicates that the first optical module and the second optical module are both configured successfully, controlling the conduction between the first optical module and the second optical module.
Here, the active WDM equipment is provided with an optical layer switch, and in an optical module configuration state, the optical layer switch is turned off, and a configuration flow of the optical module by the active WDM equipment is entered; after the configuration of the optical modules on the two sides is completed, the optical layer switch is switched on, the optical modules on the two sides are communicated, so that the optical modules on the two sides are in a working state, the active WDM equipment is also in a working state, and optical signals transmitted by the optical modules are monitored so as to obtain control information in time and manage equipment and optical channels on a transmission path.
Specifically, in this embodiment, the active WDM apparatus monitors the optical signal on each optical channel through devices such as an optical splitter on each optical port, and sends the optical signal to the internal main controller MCU for processing, and the MCU extracts the management information and inserts the configuration information in the optical signal to monitor the optical channel.
According to the control method of the fronthaul network, the active WDM equipment is added, so that the active WDM equipment can directly acquire the control information through the optical signals transmitted among the optical modules, control over the optical modules and the links is achieved, the problem of management of the optical fiber network and the optical modules in the fronthaul network of the mobile communication system is solved at low cost, and the operation and maintenance capacity of the network is improved.
As shown in fig. 2, an embodiment of the present invention further provides a method for controlling a fronthaul network, which is applied to an optical module, and includes:
The method of the embodiment of the invention is applied to the RRU/AAU or the optical module of the BBU/DU, the optical module inserts the control information into the optical signal, and the active WDM equipment can directly acquire the control information by monitoring the optical signal in the process of transmitting the control information to the optical module at the opposite end, thereby realizing the control of the optical module and the link, solving the management problem of the optical fiber network and the optical module in the fronthaul network of the mobile communication system at low cost and improving the operation and maintenance capacity of the network.
Optionally, the optical signal is a top-modulated signal of an optical layer;
the inserting the management and control information into the optical signal includes:
and adjusting the amplitude of the set top signal according to the control information.
Optionally, the structure of the management and control information includes:
identification of the optical channel, information type, information length, information content and reserved field.
Optionally, before the inserting the management and control information into the optical signal, the method further includes:
receiving configuration information sent by active WDM equipment;
feeding back configuration result information to the active WDM device.
Optionally, the receiving the configuration information sent by the active WDM apparatus includes:
and obtaining the configuration information by performing amplitude demodulation on the top-modulated signals of the optical layer.
Optionally, feeding back the configuration result information to the active WDM apparatus includes:
sending the configuration information to the active WDM device by amplitude modulating a top-modulated signal of an optical layer.
Optionally, the configuration information includes: at least one of a drive voltage, a drive current, a transmitted optical power, and a received optical power.
Optionally, the configuration result information includes: whether the configuration was successful, and at least one of the following information:
drive voltage, drive current, transmit optical power, and receive optical power.
It should be noted that the optical module applying the method is implemented by being matched with the active WDM equipment applying the method of the above embodiment, and the corresponding implementation manner in the above embodiment is applicable to the method and can achieve the same technical effect.
The above embodiments are respectively described with respect to the control method of the forwarding network of the present invention, and the following embodiments will further describe the corresponding network device with reference to the accompanying drawings.
As shown in fig. 3, a network device 300 according to an embodiment of the present invention is an active WDM device, including:
the first processing module 310 is configured to obtain management and control information according to an optical signal transmitted by the first optical module and/or the second optical module; the first optical module is an optical module on a radio remote unit RRU/an active antenna unit AAU, and the second optical module is an optical module on a baseband processing unit BBU/a distribution unit DU;
and a control module 320, configured to control the optical channel according to the management and control information.
Optionally, the optical signal is a top-modulated signal of an optical layer;
the first processing module 310 is further configured to:
and amplitude demodulation is carried out on the top modulation signal to obtain the control information.
Optionally, the structure of the management and control information includes:
identification of the optical channel, information type, information length, information content and reserved field.
Optionally, on the basis of fig. 3, as shown in fig. 4, the network device further includes:
a first sending module 330, configured to send corresponding configuration information to the first optical module and the second optical module;
the first receiving module 340 is configured to receive configuration result information correspondingly fed back by the first optical module and the second optical module.
Optionally, the first sending module 330 is further configured to:
and sending corresponding configuration information to the first optical module and the second optical module by performing amplitude modulation on a top-modulated signal of an optical layer.
Optionally, the first receiving module 340 is further configured to:
and obtaining configuration result information correspondingly fed back by the first optical module and the second optical module by carrying out amplitude demodulation on the top-modulated signal of the optical layer.
Optionally, the configuration information includes: at least one of a drive voltage, a drive current, a transmitted optical power, and a received optical power.
Optionally, the configuration result information includes: whether the configuration was successful, and at least one of the following information:
drive voltage, drive current, transmit optical power, and receive optical power.
Optionally, the network device further includes:
a second processing module 350, configured to control conduction between the first optical module and the second optical module if the configuration result information indicates that both the first optical module and the second optical module are successfully configured.
The network device of the embodiment can directly acquire the management and control information through the optical signals transmitted among the optical modules, thereby realizing management and control on the optical modules and the links, solving the management problem of the optical fiber network and the optical modules in the fronthaul network of the mobile communication system at low cost, and improving the operation and maintenance capability of the network.
It should be noted that the network device is a device to which the control method of the forwarding network is applied, and the implementation manner of the embodiment of the control method of the forwarding network is applicable to the network device and can achieve the same technical effect.
As shown in fig. 5, an embodiment of the present invention further provides a network device 500, where the network device is an optical module, and the network device includes:
a third processing module 510, configured to insert management and control information into the optical signal;
a transmission module 520, configured to transmit the optical signal to an optical module at an opposite end.
Optionally, the optical signal is a top-modulated signal of an optical layer;
the third processing module 510 is further configured to:
and adjusting the amplitude of the set top signal according to the control information.
Optionally, the structure of the management and control information includes:
identification of the optical channel, information type, information length, information content and reserved field.
Optionally, on the basis of fig. 5, as shown in fig. 6, the network device further includes:
a second receiving module 530, configured to receive the configuration information sent by the active WDM apparatus;
a second sending module 540, configured to feed back configuration result information to the active WDM apparatus.
Optionally, the second receiving module 530 is further configured to:
and obtaining the configuration information by performing amplitude demodulation on the top-modulated signal of the optical layer.
Optionally, the second sending module 540 is further configured to:
sending the configuration information to the active WDM device by amplitude modulating a top-modulated signal of an optical layer.
Optionally, the configuration information includes: at least one of a drive voltage, a drive current, a transmitted optical power, and a received optical power.
Optionally, the configuration result information includes: whether the configuration was successful, and at least one of the following information:
drive voltage, drive current, transmit optical power, and receive optical power.
In the network device of the embodiment of the invention, the management and control information is inserted into the optical signal, and the active WDM device can directly acquire the management and control information by monitoring the optical signal in the transmission process of the optical module at the opposite end, thereby realizing the management and control of the optical module and the link, solving the management problem of the optical fiber network and the optical module in the fronthaul network of the mobile communication system at low cost and improving the operation and maintenance capability of the network.
To better achieve the above object, as shown in fig. 7, the wireless communication device includes a transceiver 710, a memory 720, a processor 700, and a computer program stored in the memory 720 and executable on the processor 700; the processor 700, when executing the computer program, implements the control method described above as applied to a fronthaul network of active WDM equipment.
The transceiver 710 is used for receiving and transmitting data under the control of the processor 700.
Where in fig. 7, the bus architecture may include any number of interconnected buses and bridges, with various circuits being linked together, particularly one or more processors represented by processor 700 and memory represented by memory 720. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 710 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium.
The processor 700 is responsible for managing the bus architecture and general processing, and the memory 720 may store data used by the processor 700 in performing operations.
A network device of another embodiment of the invention includes a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor; the processor implements the control method applied to the optical module fronthaul network when executing the computer program.
The computer-readable storage medium of the embodiment of the present invention stores thereon a computer program, and when the computer program is executed by a processor, the method for controlling a forwarding network applied to an active WDM device or the steps in the method for controlling a forwarding network applied to an optical module are implemented, and the same technical effects can be achieved. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
Furthermore, it is to be noted that in the device and method of the invention, it is obvious that the individual components or steps can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of performing the series of processes described above may naturally be performed chronologically in the order described, but need not necessarily be performed chronologically, and some steps may be performed in parallel or independently of each other. It will be understood by those skilled in the art that all or any of the steps or elements of the method and apparatus of the present invention may be implemented in any computing device (including processors, storage media, etc.) or network of computing devices, in hardware, firmware, software, or any combination thereof, which can be implemented by those skilled in the art using their basic programming skills after reading the description of the present invention.
Thus, the objects of the invention may also be achieved by running a program or a set of programs on any computing device. The computing device may be a well-known general purpose device. The object of the invention is thus also achieved solely by providing a program product containing program code for implementing the method or device. That is, such a program product also constitutes the present invention, and a storage medium storing such a program product also constitutes the present invention. It is to be understood that such storage media can be any known storage media or any storage media developed in the future. It is further noted that in the apparatus and method of the present invention, it is apparent that each component or step can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of executing the series of processes described above may naturally be executed chronologically in the order described, but need not necessarily be executed chronologically. Some steps may be performed in parallel or independently of each other.
In addition, an embodiment of the present invention further provides a forwarding network system, or referred to as an open-wavelength division multiplexing (open-WDM) system, as shown in fig. 8, where the system includes:
active WDM equipment, passive WDM equipment, RRU/AAU and BBU/DU;
the passive WDM device is connected with the active WDM device through a single optical fiber;
a first optical module is arranged on the RRU/AAU, a second optical module is arranged on the BBU/DU, the first optical module is connected with the passive WDM equipment, and the second optical module is connected with the active WDM equipment; wherein the content of the first and second substances,
the first and/or second light module is configured to: inserting the control information into an optical signal, and transmitting the optical signal to an opposite-end optical module;
optionally, the active WDM apparatus is for: and acquiring control information according to the optical signal, and controlling an optical channel according to the control information.
Optionally, the active WDM apparatus is further configured to:
sending corresponding configuration information to the first optical module and the second optical module;
and receiving configuration result information correspondingly fed back by the first optical module and the second optical module.
Optionally, the first and second light modules are further configured to:
receiving configuration information sent by the active WDM equipment;
feeding back configuration result information to the active WDM device.
Optionally, the configuration information includes: at least one of a drive voltage, a drive current, a transmitted optical power, and a received optical power.
Optionally, the configuration result information includes: whether the configuration was successful, and at least one of the following information:
drive voltage, drive current, transmit optical power, and receive optical power.
Optionally, the active WDM apparatus is further configured to: and if the configuration result information indicates that the first optical module and the second optical module are both configured successfully, controlling the conduction between the first optical module and the second optical module.
The active WDM equipment obtains management and control information according to an optical signal transmitted by the first optical module and/or the second optical module, and includes: and carrying out amplitude demodulation on the set top signal to obtain the control information.
The active WDM apparatus sending corresponding configuration information to the first optical module and the second optical module, including: and sending corresponding configuration information to the first optical module and the second optical module by performing amplitude modulation on a top-modulated signal of an optical layer.
The active WDM equipment receives configuration result information correspondingly fed back by the first optical module and the second optical module, and includes: and obtaining configuration result information correspondingly fed back by the first optical module and the second optical module by amplitude demodulation of the top-modulated signal of the optical layer.
The first optical module and the second optical module insert management and control information into an optical signal, including: and adjusting the amplitude of the set top signal according to the control information.
The first optical module and the second optical module receive configuration information sent by an active WDM device, and the configuration information includes: and obtaining the configuration information by performing amplitude demodulation on the top-modulated signals of the optical layer.
The feeding back configuration result information to the active WDM equipment by the first optical module and the second optical module includes: sending the configuration information to the active WDM device by amplitude modulating a top-modulated signal of an optical layer.
Optionally, in the system according to the embodiment of the present invention, the DU is integrated with the CU.
In the fronthaul network system of the embodiment of the invention, the active WDM equipment is added, so that the active WDM equipment can directly acquire the control information through the optical signal transmitted between the optical modules, thereby realizing the control of the optical modules and the links, solving the management problem of the optical fiber network and the optical modules in the fronthaul network of the mobile communication system at low cost and improving the operation and maintenance capability of the network.
It is further noted that many of the functional units described in this specification have been labeled as modules, in order to more particularly emphasize their implementation independence.
In embodiments of the present invention, modules may be implemented in software for execution by various types of processors. An identified module of executable code may, for instance, comprise one or more physical or logical blocks of computer instructions which may, for instance, be constructed as an object, procedure, or function. Nevertheless, the executables of an identified module need not be physically located together, but may comprise disparate instructions stored in different bits which, when joined logically together, comprise the module and achieve the stated purpose for the module.
Indeed, a module of executable code may be a single instruction, or many instructions, and may even be distributed over several different code segments, among different programs, and across several memory devices. Similarly, operational data may be identified within modules, and may be embodied in any suitable form and organized within any suitable type of data structure. The operational data may be collected as a single data set, or may be distributed over different locations including over different storage devices, and may exist, at least partially, merely as electronic signals on a system or network.
When a module can be implemented by software, considering the level of hardware technology, a module implemented in software may build a corresponding hardware circuit to implement corresponding functions, without considering the cost, and the hardware circuit may include a conventional Very Large Scale Integration (VLSI) circuit or a gate array and an existing semiconductor such as a logic chip, a transistor, or other discrete components. A module may also be implemented in programmable hardware devices such as field programmable gate arrays, programmable array logic, programmable logic devices or the like.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (24)
1. A control method of a forwarding network is applied to active Wavelength Division Multiplexing (WDM) equipment, and is characterized by comprising the following steps:
acquiring management and control information according to optical signals transmitted by the first optical module and/or the second optical module; the first optical module is an optical module on a radio remote unit RRU/an active antenna unit AAU, and the second optical module is an optical module on a baseband processing unit BBU/a distribution unit DU; wherein the management and control information is used for indicating at least one of a driving voltage, a driving current, a transmitting optical power and a receiving optical power of the first optical module and/or the second optical module; and/or the management and control information is used for indicating the link state of the optical channel;
and controlling an optical channel according to the control information.
2. The method of claim 1, wherein the optical signal is a top-modulated signal of an optical layer;
the obtaining of the management and control information according to the optical signal transmitted by the first optical module and/or the second optical module includes:
and carrying out amplitude demodulation on the set top signal to obtain the control information.
3. The method according to claim 1 or 2, wherein the structure of the regulatory information comprises:
identification of the optical channel, information type, information length, information content and reserved field.
4. The method according to claim 1, wherein before obtaining the management and control information according to the optical signal transmitted by the first optical module and/or the second optical module, the method further comprises:
sending corresponding configuration information to the first optical module and the second optical module;
and receiving configuration result information correspondingly fed back by the first optical module and the second optical module.
5. The method of claim 4, wherein sending corresponding configuration information to the first and second light modules comprises:
and sending corresponding configuration information to the first optical module and the second optical module by performing amplitude modulation on the top-modulated signal of the optical layer.
6. The method according to claim 4, wherein the receiving configuration result information fed back by the first optical module and the second optical module comprises:
and obtaining configuration result information correspondingly fed back by the first optical module and the second optical module by carrying out amplitude demodulation on the top-modulated signal of the optical layer.
7. The method of claim 4, wherein the configuration information comprises: at least one of a drive voltage, a drive current, a transmitted optical power, and a received optical power.
8. The method of claim 4, wherein the configuration result information comprises: whether the configuration was successful, and at least one of the following information:
drive voltage, drive current, transmit optical power, and receive optical power.
9. The method of claim 4, further comprising:
and if the configuration result information indicates that the first optical module and the second optical module are both configured successfully, controlling the conduction between the first optical module and the second optical module.
10. A control method of a forward network is applied to an optical module and is characterized by comprising the following steps:
inserting the management and control information into an optical signal to enable active wavelength division multiplexing WDM equipment connected with the optical module to obtain the management and control information according to the optical signal; the management and control information is used for indicating at least one of driving voltage, driving current, transmitting optical power and receiving optical power of the first optical module and/or the second optical module; and/or the management and control information is used for indicating the link state of the optical channel; the first optical module is an optical module on a radio remote unit RRU/active antenna unit AAU, and the second optical module is an optical module on a baseband processing unit BBU/distribution unit DU;
and transmitting the optical signal to an opposite-end optical module.
11. The method of claim 10, wherein the optical signal is a top-modulated signal of an optical layer;
the inserting the management and control information into the optical signal includes:
and adjusting the amplitude of the top-adjusting signal according to the control information.
12. The method according to claim 10 or 11, wherein the structure of the regulatory information includes:
identification of the optical channel, information type, information length, information content and reserved field.
13. The method of claim 10, prior to said inserting regulatory information into the optical signal, further comprising:
receiving configuration information sent by active WDM equipment;
feeding back configuration result information to the active WDM device.
14. The method of claim 13, wherein the receiving configuration information sent by an active WDM device comprises:
and obtaining the configuration information by performing amplitude demodulation on the top-modulated signal of the optical layer.
15. The method of claim 13, wherein feeding back configuration result information to the active WDM equipment comprises:
sending the configuration information to the active WDM device by amplitude modulating a top-modulated signal of an optical layer.
16. The method of claim 13, wherein the configuration information comprises: at least one of a driving voltage, a driving current, a transmitting optical power, and a receiving optical power.
17. The method of claim 13, wherein the configuration result information comprises: whether the configuration was successful, and at least one of the following information:
drive voltage, drive current, transmit optical power, and receive optical power.
18. A network device, the network device being an active WDM device, comprising:
the first processing module is used for obtaining management and control information according to optical signals transmitted by the first optical module and/or the second optical module; the first optical module is an optical module on a radio remote unit RRU/an active antenna unit AAU, and the second optical module is an optical module on a baseband processing unit BBU/a distribution unit DU; wherein the management and control information is used for indicating at least one of a driving voltage, a driving current, a transmitting optical power and a receiving optical power of the first optical module and/or the second optical module; and/or the management and control information is used for indicating the link state of the optical channel;
and the control module is used for controlling the optical channel according to the control information.
19. The apparatus of claim 18, wherein the optical signal is a top-modulated signal of an optical layer;
the first processing module is further configured to:
and carrying out amplitude demodulation on the set top signal to obtain the control information.
20. A network device, the network device being an optical module, comprising:
the third processing module is used for inserting the management and control information into an optical signal so that the active wavelength division multiplexing WDM equipment connected with the optical module obtains the management and control information according to the optical signal; wherein the management and control information is used for indicating at least one of a driving voltage, a driving current, a transmitting optical power and a receiving optical power of the first optical module and/or the second optical module; and/or the management and control information is used for indicating the link state of the optical channel; the first optical module is an optical module on a radio remote unit RRU/an active antenna unit AAU, and the second optical module is an optical module on a baseband processing unit BBU/a distribution unit DU;
and the transmission module is used for transmitting the optical signal to the opposite-end optical module.
21. The apparatus of claim 20, wherein the optical signal is a top-modulated signal of an optical layer;
the third processing module is further configured to:
and adjusting the amplitude of the top-adjusting signal according to the control information.
22. A network device comprising a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor; characterized in that the processor, when executing the computer program, implements a method of controlling a forwarding network according to any one of claims 1-9.
23. A network device comprising a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor; characterized in that the processor, when executing the computer program, implements a method of controlling a forwarding network according to any of claims 10-17.
24. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the method of controlling a fronthaul network according to any one of claims 1 to 9 or the steps of the method of controlling a fronthaul network according to any one of claims 10 to 17.
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| CN201910539229.5A CN112118070B (en) | 2019-06-20 | 2019-06-20 | Control method of forwarding network, network equipment and system |
| PCT/CN2020/097248 WO2020253850A1 (en) | 2019-06-20 | 2020-06-19 | Front-haul transport network control method, network device, and front-haul transport network control system |
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| CN114726680A (en) * | 2021-01-04 | 2022-07-08 | 中国移动通信有限公司研究院 | Forwarding management and control method and system |
| CN115001588B (en) * | 2021-03-01 | 2023-06-09 | 烽火通信科技股份有限公司 | Remote management device and method for 5G forward link |
| CN113660557A (en) * | 2021-07-13 | 2021-11-16 | 武汉兴思为光电科技有限公司 | Top-adjusting information monitoring device and method |
| CN113630181A (en) * | 2021-08-11 | 2021-11-09 | 中国电信股份有限公司 | Cross-network data transmission method, device, system, electronic device and medium |
| CN116017660A (en) * | 2021-10-21 | 2023-04-25 | 中国移动通信有限公司研究院 | Optical module power adjustment method, optical module and storage medium |
| CN114465663A (en) * | 2022-03-23 | 2022-05-10 | 中国电信股份有限公司 | Optical path fault positioning method and system |
| CN116723091B (en) * | 2023-08-09 | 2023-11-07 | 中国电信股份有限公司 | Control system, control method, control device, electronic apparatus, and storage medium |
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| CN104066018A (en) * | 2014-06-16 | 2014-09-24 | 上海交通大学 | Base band migration system for wireless fronthaul of passive optical network |
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