CN102739309B - Method for rapidly sensing state of port in intelligent ODN (Optical Distribution Network) system - Google Patents

Abstract

The invention discloses a method for quickly sensing the state of a port in an intelligent ODN system, which relates to the field of intelligent ODN, and includes the steps of: acquiring information about whether a wiring interface board is in place by polling the port state, and if the wiring interface board is in place, Return the port status; for the slot that is not in place, skip the polling directly; only when the port status changes, the complete electronic label information will be obtained. The present invention can control the time required for reading the port state of a slot within 10 ms, significantly shortens the time for obtaining the port state, and realizes fast perception of the port state.

Description

A method for quickly sensing port status in an intelligent ODN system

technical field

The present invention relates to the field of intelligent ODN (Optical Distribution Network, optical distribution network), in particular to a method for quickly sensing port status in an intelligent ODN system.

Background technique

ODN is based on the FTTH (Fiber To The Home) optical cable network of PON (Passive Optical Network, passive optical network) equipment, which is an important part of the FTTH network. ) and ONU (Optical Network Unit, Optical Network Unit) to provide optical transmission channels, including optical fiber cables, optical connectors, optical splitters, and supporting equipment for installing and connecting these devices from the operator's computer room to the user's home. . The deployment and management of traditional ODN network optical fibers all rely on manual methods. During data entry, it is necessary to manually enter the optical fiber connection to the background database, and the error rate is high. In engineering construction and operation and maintenance, it is necessary to manually search and locate optical fiber connection points or fault points. It is difficult to quickly locate fault points during maintenance, which is inefficient and has a huge impact on the sustainability of work.

As the construction of FTTx (Fiber-to-the-x, fiber-optic access) enters the era of large-scale deployment, the demand for massive fiber deployment and efficient management in the FTTx network makes operators face high deployment costs and huge O&M How to efficiently manage the geometrically increasing optical fibers in the ODN network has increasingly become the focus of the industry. At present, in the ITU-T SG15/L.64 standard, there are suggestions on using two-dimensional codes and RFID (Radio Frequency Identification, radio frequency identification) tags to achieve efficient fiber routing and equipment management. Professional tools scan QR codes one by one to obtain port information, or use RFID to identify devices, etc. However, limited by the technology itself, the above two technologies still cannot realize functions such as automatic acquisition of optical fiber routing information.

The intelligent ODN system introduces the world's only electronic label and on-site construction auxiliary software, taking into account the passive attributes of the ODN network, and adds the function of intelligent management on the basis of maintaining the equipment performance and application range of the conventional ODN system. It can realize optical fiber ID (IDentity, identification number) management, port status collection, port search indication, visualization tool PDA (Personal Digital Assistant, personal digital assistant), and geographic information display of the entire network topology, fiber link diagram, equipment Geographical coordinate indication and other functions. Makes obtaining network information more convenient, intuitive and reliable. It can realize automatic optical fiber search and accurate record of operation, so as to realize efficient deployment of FTTH and accurate positioning of optical fiber faults, and greatly reduce the cost of deployment and operation and maintenance.

The intelligent ODN system includes a transport layer and a management layer. The transport layer connects OLT and ONU. The transport layer includes optical fiber cables, optical distribution equipment, and optical cable connection equipment. The management layer includes on-site operation computers and ODN network management. The system is interconnected with the work order system and FTTH network management. The ODN network system mainly manages equipment, routing topology, line connection relationship, and wiring. The basis of these managements is the identification of related equipment and devices. ODN devices in the traditional sense basically use text descriptive identification, such as the installation address of the device, the device model, and the description of the core requirements of the connected optical fiber or the description of the transmission path sequence to identify them. Although this information has very clear location or topological information, which is easy for humans to understand, it is not convenient for computers to automatically collect and identify it, and it is difficult to carry out intelligent management.

The electronic label intelligent management technology is to install an IC chip with a globally unique code on the optical fiber active connector, and install an electrical contact that can read the IC (Integrated Circuit, integrated circuit) chip code information on the optical fiber active connector on the optical fiber adapter. Reed and an LED indicator to indicate the port. Under the control of the on-site operation computer, the wiring equipment can obtain the connection status of the optical fiber adapter port through self-inspection, and through the obtained electronic label information on the optical fiber active connector, it can sense whether the optical fiber active connector is inserted normally and the ID information Whether the information is entered correctly, whether the insertion is correct, etc., through the control of the LED indicator light on the port of the optical fiber adapter, the instructions to the construction personnel on site are realized.

The intelligent ODN system includes a main control management unit and a sub-frame wiring control board. A wiring device is equipped with at most one main control management unit, which communicates with the on-site operation computer through a USB (Universal Serial BUS, universal serial bus) interface, and through the sub-frame The wiring control board controls and manages the wiring interface board. The main control management unit manages multiple sub-frames, and each sub-frame can manage multiple distribution interface boards through the sub-frame distribution control board, and each distribution interface board can manage multiple optical fiber adapter ports through the backplane bus, and the electronic label The read and write instructions of the chip are connected to the required specific port, so as to realize the control of the LED (Light Emitting Diode, light emitting diode) indicator light on the fiber optic adapter and the reading of the electronic label information in the fiber optic active connector.

In actual operation, the on-site computer guides the construction personnel on-site construction according to the pre-configured work order information, and needs to be able to instantly light up the LED light on the fiber optic adapter on the wiring interface board. After the optical fiber is inserted, judge whether it has been inserted normally by reading the electronic label information. After the normal insertion is completed, turn off the LED light of the port and proceed to the next step. In engineering maintenance, it is necessary to quickly obtain port status and report changes in port status immediately. In practical applications, polling is used to obtain port electronic tags, and the main control management unit compares with the port electronic tag information polled last time. , to report the information change of the port electronic label.

The polling process is as follows: the sub-frame wiring control board polls the electronic label information of each port on each wiring interface board under the management of the sub-frame one by one, and the main control management unit polls the electronic label information of all sub-frames under management one by one . It takes 20ms to read the electronic label information of a distribution interface board port. Assuming that a sub-box can manage 10 distribution interface boards, it takes more than 200ms to poll the electronic label information of a sub-box. Because it takes a long time to read the information of the electronic label of the port, when there are too many ports managed by the sub-frame wiring control board, the polling cycle is too long, and the port status information change cannot be reported immediately, which cannot meet the timeliness requirements of on-site operation .

Contents of the invention

The purpose of the present invention is to overcome the above-mentioned deficiencies in the background technology, and provide a method for quickly sensing the port state in an intelligent ODN system. The time required to read the port state of a slot can be controlled within 10ms, and the time for obtaining the port state is obvious. Shortened to achieve fast perception of port status.

The method for quickly sensing the port state in the intelligent ODN system provided by the present invention comprises the following steps: A, obtain the information whether the wiring interface board is in place by polling the port state, and return the port state if the wiring interface board is in place; For the slots that are not in place, skip the polling directly; B. When it is determined that the port status changes, the complete electronic label information is obtained.

In the above technical solution, step B includes the following steps: After each polling port status to obtain the port information of a distribution interface board, compare the current port status with the result of the last poll, if it is found that the current port status has occurred If the optical fiber interface is pulled out or a new interface is inserted, it will actively report the port status change information, and actively read and update the port electronic label information.

In the above technical solution, when the port status is polled in step A, the information on whether the distribution interface board is in place is obtained through the single-bus 1-wire communication mode.

In the above technical solution, in step A, it takes 10 ms to obtain the information of whether the distribution interface board is in place.

In the above technical solution, steps before step A include: after the subframe is powered on, start polling the wiring interface board under the wiring control board of the subframe one by one, record the number of polling, and recount if it exceeds 10 times, according to the number of polling The number of times determines the type of polling.

In the above technical solution, after the sub-frame is powered on, it first polls the electronic tags of all ports, stores relevant information, and then polls the port status 10 times, and every polling of all wiring interface panels is recorded as polling once.

In the above technical solution, if the number of polls is the first time or greater than 10, then query whether the slot is in place, if it is in place, then poll the port electronic tag; if not in place, then poll the port of the next slot information.

In the above technical scheme, if the number of polling times is less than 10, then judge whether the slot is in place according to the recorded information, if it is in place, then poll the port status, and poll the port information of the next slot; if not in place, then Poll the port information of the next slot.

In the above technical solution, the electronic tag is eID or RFID.

Compared with prior art, advantage of the present invention is as follows:

By applying the method of the present invention, the time required to read the port state of a slot can be controlled within 10 ms, the time for obtaining the port state is significantly shortened, and the port state can be quickly sensed.

Description of drawings

Fig. 1 is a structural block diagram of an intelligent ODN system.

Fig. 2 is a basic operation flowchart of the intelligent ODN system.

Fig. 3 is an interactive schematic diagram of rotation training operation in the intelligent ODN system.

Fig. 4 is a flowchart of an embodiment of the present invention.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1, the intelligent ODN system is divided into two application scenarios:

1. Multi-sub-frame wiring equipment: including the main control management unit and multiple sub-frames. In each sub-frame, the sub-frame wiring control board manages the wiring interface board. The main control management unit communicates with the handheld device through the USB interface, and collects and transmits the data to the network management system.

2. Single sub-frame wiring equipment: the sub-frame wiring control board directly realizes the management and control functions, completes the collection of system information, and realizes the interaction with the network management system.

As shown in Figure 2, the basic operation process of the intelligent ODN system is as follows: the intelligent management terminal issues control commands, and the main control management unit issues the commands to the sub-frame wiring control board through a private protocol. After the command is executed, the returned data will be returned to the main control management unit through a private protocol, and then the main control management unit will report it to the network management system.

As shown in FIG. 3 , the interactive process of the rotation training operation is as follows: the sub-frame wiring management unit polls and finds that the port status changes, and reports it to the intelligent management terminal. The intelligent management terminal judges whether the change of the port state is normal, and queries the port electronic label information. The sub-frame wiring management unit sends electronic label information. The intelligent management terminal judges whether the electronic label information is correct, and makes corresponding operations.

Considering that in the actual scene application, in most cases, it is only necessary to sense whether the port is in place in real time, and to obtain the event of port unplugging and plugging, and does not need the complete instant information of the electronic tag, so the embodiment of the present invention designs two kinds of polling mechanism:

1. Obtain complete electronic label information.

2. The complete electronic tag information is not obtained during polling, but only the information of whether the electronic tag is in place is obtained through the single-bus 1-wire communication method, and the port status is returned directly. 1-wire uses a single signal line to transmit clock and data at the same time, and the data transmission is bidirectional. It has many advantages such as saving I/O port line resources, simple structure, low cost, and convenient for bus expansion and maintenance.

Referring to Fig. 4, an embodiment of the present invention provides a method for quickly sensing port status in an intelligent ODN system, including the following steps:

Step S 1. After the sub-frame is powered on, start polling the wiring interface boards under the wiring control board of the sub-frame one by one;

Step S2, recording the number of polling times, and recounting more than 10 times;

Step S3, judge the type of polling according to the number of polling times, if the number of polling times is the first time or greater than 10, then go to step S4; if the number of polling times is less than 10, then go to step S6; in specific implementation, After the device is started, it first polls the electronic tags of all ports to store relevant information, and then polls the port status ten times. After polling all the wiring interface boards each time, it is recorded as polling once.

Step S4, query whether the slot is in place (requires 10ms), if in place, then go to step S5; if not in place, then go to step S8;

Step S5, polling the port electronic label, go to step S8;

Step S6, judging whether the slot is in place according to the recorded information, if in place, then go to step S7; if not in place, then go to step S8;

Step S7, polling port status, go to step S8;

Step S8. After the polling is finished, the port information of the next slot is polled. If the port electronic label is polled, it takes 20ms to read the electronic label information of the wiring interface panel port. If the port status is polled, it only takes 10ms to directly read the port status of the wiring interface panel port.

Obtain information about whether the distribution interface board is in place, and directly skip polling for slots that are not in place, saving polling time. After polling the port status multiple times, poll the electronic label information once. Through the scheduling and effective control of the two polling mechanisms, on the premise of maintaining the normal operation of the function, the time for obtaining the real-time port status is saved, thereby meeting the real-time requirement of the system.

After polling the port status each time to obtain the port information of a distribution interface board, the current port status will be compared with the last polling result. When a new interface is inserted, it will actively report the port status change information, and actively read and update the port electronic label (eID or RFID) information. This processing method can obtain the electronic tag information when the port status changes, and can also reduce the time required for sensing the electronic tag port information change, and only read the electronic tag information when the port status changes, saving Polling time.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. The invention includes such modifications and variations. The content not described in detail in this specification belongs to the prior art known to those skilled in the art.

Claims (1)

1. the method for quick sensing port status in intelligent ODN system, is characterized in that comprising the following steps:

After step S1, sub-frame power on, start the distribution interface plate under the sub-frame distribution of poll one by one control board;

Step S2, record wrap count, count again more than 10 times;

Step S3, judge the type of poll according to the number of times of poll, if wrap count for first time or be greater than 10, then forwards step S4 to; If wrap count is less than 10, then forward step S6 to;

Step S4, inquiry slot whether in place, the time taken is 10ms, if in place, then forwards step S5 to; If not in place, then forward step S8 to;

Step S5, poll port electronic label, forward step S8 to;

Step S6, according to record information judge that whether slot in place, if in place, then forward step S7 to; If not in place, then forward step S8 to;

Step S7, poll port status, forward step S8 to;

After step S8, end poll, the port information of the next slot of poll; If poll port electronic label, the electronic labeling information reading distribution interface dish port needs 20ms, if poll port status, the port status directly reading distribution interface dish port only needs 10ms;

When A, poll port status, get distribution interface plate information whether in place by monobus 1-wire communication mode, if distribution interface plate is in place just return port status; For slot not in place, directly skip poll; Poll is repeatedly after port status, poll primary electron label information;

B, when determining that port status changes, just obtain complete electronic labeling information:

After each poll port status obtains the port information of a distribution interface plate, the result of current port state and last poll is compared, if find that current port state there occurs change, there is optical fiber interface to extract or have new interface to insert, then active reporting port status change information, initiatively read and upgrade port electronic label information, described electronic tag is eID or RFID.