CN115037837A

CN115037837A - Power dispatching trumpet number-placing system based on IPoE and optical transmission bearing

Info

Publication number: CN115037837A
Application number: CN202210588416.4A
Authority: CN
Inventors: 曾时博; 舒然; 洪丹轲; 黄昱; 张思拓; 范俊成
Original assignee: China Southern Power Grid Co Ltd
Current assignee: China Southern Power Grid Co Ltd
Priority date: 2022-05-27
Filing date: 2022-05-27
Publication date: 2022-09-09

Abstract

The invention provides a dispatching trumpet number allocation system based on IPoE and optical transmission bearing, which relates to the technical field of electric power dispatching trumpet number allocation, wherein an IPoE technology is introduced, IP messages are transmitted on an E1 link, and meanwhile, the compatibility with a program-controlled switch of a main power grid station is considered, and a complete dispatching trumpet number allocation system is constructed on the program-controlled switch of the main power grid station, wherein an E1 user board supports multi-path simulated user access, an IPoE number allocation module supports multi-path simulated number allocation capacity, supports corresponding multi-path downlink E1 interfaces, then carries out dispatching number allocation on a remote station based on optical transmission network bearing, and on one hand, the characteristics of high reliability and high stability of a dispatching switching network are inherited; on the other hand, an IP framing packet switching technology is introduced, and an IP voice packet frame is structured, so that the IP voice packet frame can be transmitted in an E1 time slot, the state of various remote station equipment can be managed and known, and a technical basis is provided for diversified service expansion.

Description

Power dispatching trumpet number-placing system based on IPoE and optical transmission bearing

Technical Field

The invention relates to the technical field of power dispatching trumpet number allocation, in particular to a dispatching trumpet number allocation system based on IPoE and optical transmission bearing.

Background

The power dispatching telephone is an independent telephone channel which is built by power grid enterprises according to the importance of dispatching and the busyness of enterprise management, and can realize the dispatching of a power system and effectively command production. The dispatching telephone can carry out centralized acquisition and data analysis on the multistage networking relay signaling message, realize the centralized monitoring of the relay signaling, carry out quick positioning, early warning generation and automatic traffic distribution on the call failure or abnormal signaling message, is the most direct means for commanding under the power dispatching command, requires high reliability, and also needs to ensure the smoothness of the telephone under normal conditions, severe weather conditions and accidents of a power system.

A dispatching trumpet is an important distribution mode of dispatching telephones, and in a traditional dispatching trumpet distribution mode, voice services and other services of a remote station are multiplexed into an E1 signal through PCM equipment and then connected with the PCM equipment in a power grid main station through a data transmission network, so that the interconnection of the voice services and other services with the power grid main station is realized. For example, in the prior art, a PCM voice signaling and protocol communication conversion system for a power dispatching communication network is disclosed, which indicates that a remote station generates n El signals through multiplexing of a PCM machine, transmits the n El signals through an optical transmission network SDH and converges the n El signals to a master station, the master station generates an El voice switching relay or an SIP relay through a signaling protocol converter after cross connection, digital compression, signaling conversion and IP packet switching processing, and connects the generated El signals with an IP pbx device signal, a generated non-voice service signal is connected with a corresponding control terminal, while realizing conversion of an SIP protocol and an E1 relay protocol of PCM voice services and non-voice services of a remote substation, original PCM equipment is retained, and the total cost of investment and maintenance is reduced, however, the current PCM equipment faces the problems of high equipment downtime, lack of spare parts, large equipment occupation ratio under the technical support condition of manufacturers, and high failure rate, the safe operation of the power grid is influenced to a certain extent.

Meanwhile, in order to support the development of diversified power grid services, on one hand, cooperation is established between a power grid and various large service manufacturers, and due to the fact that the technical characteristics of program-controlled exchanges provided by the various manufacturers of the power grid are different, when a number allocation mode of a power grid master station to a remote station is developed, whether the number allocation mode is matched with an original program-controlled exchange system of the power grid or not and whether the reliable operation of the original program-controlled exchange system of the power grid is influenced or not are both problems to be considered; on the other hand, the diversification of services brings challenges to the traditional scheduling switching mode. With the IP of power communication and the explosive increase of IP data traffic, the center of gravity of the entire communication network gradually shifts to the IP network. The maturity and low cost of the IP network technology make it the first choice of many users, the PCM device number allocation mode between the main station of the power grid and the remote site is gradually eliminated, and the solutions for many current business applications (such as video, voice, etc.) are generally based on the IP network system, however, some private power networks currently have a large number of conventional E1 channels, so in order to make video and voice devices based on the IP network system fully utilize the conventional E1 channel, on one hand, it is considered that old PCM devices have very wide application in power network communication, on the other hand, new services need support in a soft switch (based on IP network bearer) mode, therefore, it is necessary to research a new technology that can provide a bearer channel and effectively manage the number assignment of the remote station from the power grid master station while replacing the existing PCM device for decommissioning.

Disclosure of Invention

In order to solve the problem of considering both the decommissioning of PCM equipment and the development of a power grid dispatching trumpet number allocation mode under the development of diversified power grid services, the invention provides a dispatching trumpet number allocation system based on IPoE and optical transmission bearing.

In order to achieve the technical effects, the technical scheme of the invention is as follows:

a scheduling trumpet number allocation system based on IPoE and optical transmission bearing, the system comprises:

the system comprises a power grid master station program-controlled switch, a remote station and a control center, wherein the power grid master station program-controlled switch is a center for issuing production scheduling and instructions to the remote station by the power grid master station;

the E1 user board is matched and integrated with the program-controlled switch of the power grid master station, and provides n-path simulated user interfaces for the program-controlled switch of the power grid master station, so that n-path simulated user number allocation is supported;

the IPoE number allocation module receives n paths of analog user numbers, IP data packets and TDM frames of the Ethernet, maps the IP data packets of the Ethernet and multiplexes/demultiplexes the TDM frames to obtain a framed packet E1 data frame; the IPoE number-giving module is provided with n paths of first downlink E1 interfaces, and the framed packet E1 data frames are sent to an optical transmission network for transmission through the n paths of first downlink E1 interfaces;

the optical transmission network is provided with a second downlink E1 interface and a third downlink E1 interface, the second downlink E1 interface receives the framed packet E1 data frames transmitted by the n paths of first downlink E1 interfaces, the framed packet E1 data frames enter the optical transmission network, are carried and transmitted by the optical transmission network, and are input into a special dispatching small-size terminal through the third downlink E1 interface;

and the special dispatching trumpet terminal receives the framed packet E1 data frame input through the third downlink E1 interface, analyzes the framed packet E1 data frame into an IP data packet, and distributes the IP data packet to a remote site service telephone to finish dispatching trumpet allocation.

An IPoE technology (IP message is transmitted on an E1 link) is introduced in the scheme, a complete dispatching trumpet number-placing system is constructed on a program-controlled switch of a main station of the existing power grid, an E1 user board supports multi-path simulated user access, an IPoE number-placing module supports multi-path simulated number-placing capacity, and supports a corresponding multi-path downlink E1 interface, and the system is utilized to dispatch and place numbers for remote sites (such as substations/converters/power plants and other sites) based on optical transmission network bearing, so that the characteristics of high reliability and high stability of a dispatching and switching network are inherited on one hand; on the other hand, an IP framing packet switching technology is introduced, the currently reserved traditional E1 channel is fully utilized, and an IP voice packet frame is structured, so that the IP voice packet frame can be transmitted in an E1 time slot, the bandwidth can be adjusted according to different equipment, the state of various remote site equipment can be managed and known, and a technical basis is provided for diversified service expansion.

Preferably, the E1 user board adopts a G.703 protocol consistent with the program-controlled switch of the main station of the power grid, is matched and integrated with the program-controlled switch of the main station of the power grid, is compatible with the technical characteristics of the program-controlled switches provided by different service providers of the power grid, realizes the logic splitting distribution of the time slots of the program-controlled switch of the main station of the power grid, the number distribution of the program-controlled switches of the main station of the power grid, the packaging and checking of voice and scheduling signaling data, ensures the good compatibility with the program-controlled switch system of the main station of the power grid, and does not influence the reliable operation of the original system.

Preferably, the system also comprises an E1 junction box for supporting the n-path simulated user number-placing downlink outgoing lines placed by the SPC exchange of the main station of the power grid through an E1 user board.

Preferably, the system further comprises a first downstream E1 cable, the first downstream E1 cable connecting n first downstream E1 interfaces, each first downstream E1 interface comprising a circuit channel, an IP channel, and a management channel; the IPoE number assignment module is realized by adopting a logic programmable FPGA chip, the IPoE number assignment module acquires and stores a standard connection configuration mode of a first downlink E1 cable connected with n paths of first downlink E1 interfaces, the standard connection configuration mode comprises a first downlink E1 cable serial number and an interface number of the n paths of first downlink E1 interfaces correspondingly connected with the first downlink E1 cable serial number, the IPoE number assignment module presets a coding indication signal for the first downlink E1 cable according to the standard connection configuration mode, and when the first downlink E1 cable is connected with the corresponding first downlink E1 interface, the IPoE number assignment module responds to the coding indication signal preset for the first downlink E1 cable to be positive; otherwise, the IPoE number allocation module sends out an alarm.

The logic programmable FPGA special chip adopts a special protocol, is beneficial to interface management of a number distribution system, ensures transmission safety on the one hand, is relatively flexible in subsequent protocol adjustment, can realize future service expansion, and can reach a balance point between deployment capacity and port cost on the other hand, so that the logic programmable FPGA special chip is more suitable for practical scale application. In addition, the IPoE number allocation module adopts a logic programmable FPGA special chip, supports the online detection of the connection state of the downlink E1 cable, and ensures the safety and reliability of data transmission.

Preferably, a logic programmable FPGA chip of the IPoE number allocation module is provided with a first IP packet processing unit and a first E1 data encapsulation processing unit, the first IP packet processing unit performs transmission processing on a received IP data packet of the ethernet, adds a packet header flag, a packet sequence number and a check to the IP data packet of the ethernet, and transmits the packet header flag, the packet sequence number and the check to the first E1 data encapsulation processing unit, the first E1 data encapsulation processing unit performs clock data processing on the IP data packet to encapsulate the IP data packet into an E1 data frame, the E1 data frame is divided into 32 time slots, each time slot transmits 1 byte, except for the time slot TS0 used for frame synchronization, other time slots can be used as transmission channels, each E1 data frame can transmit data by using 31 time slots at most, meanwhile, the E1 user board performs split allocation on logic of a program-controlled time slot of a main station switch, and encapsulates n-path analog user number allocation data into an E1 data frame, e1 data frame is sent to optical transmission network for transmission through n paths of first downlink E1 interface, first downlink E1 cable and second downlink E1 interface, then inputting a special dispatching small-size terminal through a third downlink E1 interface, wherein the special dispatching small-size terminal is provided with a first E1 data decapsulation processing unit and a second IP packet processing unit, the first E1 data decapsulation processing unit carries out frame clock data recovery, frame positioning and frame analysis processing on an E1 data frame to complete decapsulation to obtain an IP data fragment, the IP data fragment is transmitted to the second IP packet processing unit, the second IP packet processing unit reassembles the IP data fragment into a complete IP data packet, and judges the integrity and validity of the IP data packet according to the frame header mark, the packet sequence number and the check, therefore, the transmission performance of the data packet in the number allocation system is monitored, and the number allocation of the remote site service telephone is realized.

The frame structuring is carried out on each path of IP data packet with the occupied bandwidth of about 100Kbps, so that the IP data packet can be transmitted in an E1 time slot to be sliced and encapsulated into an E1 data frame, the E1 data frame is transmitted to a far end through an E1 data link, a working clock is regenerated on far-end equipment, the E1 data frame is disassembled to finish the recombination and the transmission of the IP data packet, and the equipment state accessed by a far-end site can be managed and known by an IPoE (IP message transmission on an E1 link) technology, thereby providing a technical basis for diversified service expansion. In addition, the integrity and the legality of the data packet are judged based on the adding mode of frame header marks, packet sequence numbers and verification, so that the transmission performance of the data packet and the state of each interface port are monitored, and monitoring and alarming of a downlink E1 link are supported.

Preferably, the transmission of the IP data packet adopts a customized protocol, and when the first IP packet processing unit performs transmission processing on the received IP data packet of the ethernet, the first IP packet processing unit filters the IP data packet that does not conform to the customized protocol according to the matching between the MAC address and the IP address of the IP data packet and the customized protocol, and adds a packet header flag, a packet sequence number, and verification to the IP data packet that conforms to the customized protocol.

Preferably, the optical transmission network is an SDH optical transmission network that transmits based on a frame structure.

Preferably, the special dispatching small-size terminal is provided with a second E1 data encapsulation processing unit and a third IP packet processing unit, after the remote site completes hotkey dialing, fault self-checking and call recording, analog signal data packets and IP data packets in the hotkey dialing, fault self-checking and call recording are transmitted to the special dispatching small-size terminal, the IP data packets are firstly added with packet header marks, packet sequence numbers and verification by the third IP packet processing unit and then transmitted to a second E1 data encapsulation processing unit, the second E1 data encapsulation unit performs clock data processing on the IP data packets, and the analog signal data packets in the hotkey dialing, fault self-checking and call recording are encapsulated into E1 data frames;

the optical transmission network is also provided with a first uplink E1 interface and a second uplink E1 interface, the IPoE number-placing module is also provided with a third uplink E1 interface, a second E1 data decapsulation processing unit and a fourth IP packet processing unit, an E1 data frame is transmitted to the optical transmission network through the first uplink E1 interface and is output through the second uplink E84 interface of the optical transmission network, the IPoE number-placing module detects and confirms the state of the third uplink E1 interface based on a logic programmable FPGA chip, then the E1 data frame is input into the IPoE number-placing module through the third uplink E1 interface, an E1 cable for E1 data frame transmission is arranged between the second uplink E1 interface and the third uplink E1 interface, the third uplink E1 interface comprises a circuit channel, a framing signaling channel and a unframing signaling channel, the second E1 data-encapsulating processing unit encapsulates the E1 data frame into a decapsulation channel, and the decapsulated E1 data frame is processed by a fourth IP packet processing unit, and judging the integrity and the legality of the IP data packet according to the frame header mark, the packet sequence number and the verification, and transmitting the IP signal data packet and the analog signal data packet to the program-controlled switch of the power grid master station through an E1 user board so as to establish a call between the power grid master station and the remote site service phone.

The system also supports uplink transmission from a remote station to a power grid master station, supports encapsulation, distribution and operation management of voice and signaling data, and signaling conversion between uplink E1 signaling and downlink E1, ensures reliability and safety of scheduling communication, can meet the requirement of continuous development of a substitute PCM device, judges the integrity and legality of an IP data packet according to frame header marks, packet sequence numbers and verification in the process of transmission through an uplink E1 port, and can realize monitoring and alarming of an uplink E1 port link.

The invention also provides a method for dispatching the trumpet numbers based on IPoE and optical transmission bearing, which comprises the following steps:

s1, introducing an E1 user board matched and integrated with a program-controlled switch of a power grid master station, wherein the E1 user board provides n-path simulation user interfaces for the program-controlled switch of the power grid master station so as to support n-path simulation user number allocation;

s2, receiving n paths of analog user numbers, IP data packets of the Ethernet and TDM frames by using an IPoE number allocation module, mapping the IP data packets of the Ethernet and multiplexing/demultiplexing the TDM frames to obtain a framed packet E1 data frame;

s3, using the optical transmission network to carry and transmit the data frame of the framed packet E1, and then inputting the data frame into a special dispatching small-size terminal;

and S4, the special dispatching trumpet terminal receives the data frame of the framed packet E1, analyzes the data frame of the framed packet E1 into an IP data packet, and distributes the IP data packet to a remote site service telephone to finish dispatching trumpet number allocation.

Preferably, in step S1, the E1 user board adopts a g.703 protocol consistent with the program-controlled switch of the grid master station, and is integrated with the program-controlled switch of the grid master station in a matching manner, so as to be compatible with technical features of the program-controlled switches provided by different service providers of the grid.

Compared with the prior art, the technical scheme of the invention has the beneficial effects that:

the invention provides a dispatching trumpet number allocation system based on IPoE and optical transmission bearing, which is characterized in that an IPoE technology is introduced, IP messages are transmitted on an E1 link, compatibility with a program-controlled switch of an existing power grid master station is considered, and a complete dispatching trumpet number allocation system is constructed on the program-controlled switch of the existing power grid master station, wherein an E1 user board supports multi-path simulated user access, an IPoE number allocation module supports multi-path simulated number allocation capacity, supports corresponding multi-path downlink E1 interfaces, and then dispatches and allocates numbers to remote sites based on optical transmission network bearing, so that the characteristics of high reliability and high stability of a dispatching switching network are inherited on one hand; on the other hand, an IP framing packet switching technology is introduced, the currently reserved traditional E1 channel is fully utilized, and an IP voice packet frame is structured, so that the IP voice packet frame can be transmitted in an E1 time slot, the state of various remote station equipment can be managed and known, and a technical basis is provided for diversified service expansion.

Drawings

Fig. 1 shows a structure diagram of a scheduling trumpet number allocation system based on IPoE and optical transmission bearer in embodiment 1 of the present invention;

fig. 2 shows a schematic diagram proposed in embodiment 2 of the present invention in consideration of the first downstream E1 cable connection state detection;

fig. 3 is a schematic diagram of a data packet processing process for scheduling and queuing from a grid master station to a remote station according to embodiment 3 of the present invention;

fig. 4 is a schematic diagram illustrating a process of processing a data packet transmitted from a remote station to a grid master station in an uplink manner according to embodiment 3 of the present invention;

fig. 5 is a flowchart illustrating a procedure of scheduling a trumpet number based on IPoE and an optical transmission bearer in embodiment 4 of the present invention.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the patent;

for better illustration of the present embodiment, certain parts of the drawings may be omitted, enlarged or reduced, and do not represent actual dimensions;

it will be understood by those skilled in the art that certain well-known descriptions of the figures may be omitted.

The positional relationships depicted in the drawings are for illustrative purposes and are not to be construed as limiting the present patent;

the technical solution of the present invention is further described below with reference to the accompanying drawings and examples.

Example 1

The IPoE technology, i.e., the IP over E1 technology, refers to a technical solution for carrying an IP packet service on a 2M interface of an optical transport network. IP is the core content of a series of network protocols, and is mainly responsible for connectionless packet data transmission; e1 is a coaxial cable interface standard, typically 2.048Mbit/s speed, using PCM coding.

In order to solve the problem of how to consider both the decommissioning of PCM devices and the development of a power grid dispatching trumpet model under the development of diversified power grid services, the present embodiment provides a dispatching trumpet numbering system based on IPoE and optical transmission bearer, where a structural diagram of the system is shown in fig. 1, see fig. 1, and the system includes:

the E1 user board is matched and integrated with the program-controlled switch of the power grid master station, and provides n-path simulated user interfaces for the program-controlled switch of the power grid master station, so that n-path simulated user number allocation is supported; the user board is divided into an analog user board and a digital user board, the E1 user board is generally connected with various common telephones (including pulse, dual-tone multi-frequency, hands-free, recording and the like) or fax machines sold on the market, the price of the telephones is low, in the embodiment, the compatibility idea of matching and integrating the E1 user board and a power grid master station program controller is provided, and at least 30 paths of analog users are supported,

the IPoE number allocation module, in this embodiment, supports receiving at least 30 channels of analog user number allocation capacity, an IP data packet of an ethernet, and a TDM frame, and maps the IP data packet of the ethernet and multiplexes/demultiplexes the TDM frame to obtain a framed packet E1 data frame; the IPoE number allocation module is provided with at least 30 paths of first downlink E1 interfaces, and a framed packet E1 data frame is sent to an optical transmission network for transmission through at least 30 paths of first downlink E1 interfaces;

an optical transmission network, in this embodiment, the optical transmission network is an SDH optical transmission network that transmits based on a frame structure, the optical transmission network is provided with a second downlink E1 interface and a third downlink E1 interface, the second downlink E1 interface receives at least 30 data frames of a framed packet E1 transmitted by the first downlink E1 interface, the data frame of the framed packet E1 enters the optical transmission network, is carried and transmitted by the optical transmission network, and is input to a dedicated dispatch small-size terminal through the third downlink E1 interface;

the special dispatching trumpet terminal receives the framed packet E1 data frame input by the third downlink E1 interface, analyzes the framed packet E1 data frame into IP data packets, and distributes the IP data packets to the remote site service telephone to finish dispatching trumpet allocation.

In this embodiment, the E1 user board adopts a g.703 protocol consistent with the program controlled switch of the grid master station, is matched and integrated with the program controlled switch of the grid master station, is compatible with the technical characteristics of program controlled switches provided by different service providers of the grid, realizes logic splitting allocation of time slots of the program controlled switch of the grid master station, number allocation of the program controlled switch of the grid master station, voice, scheduling signaling data encapsulation and checking, ensures good compatibility with the program controlled switch system of the grid master station, and does not affect the reliable operation of the original system.

In this embodiment, referring to fig. 1, the system further comprises an E1 concentrator box for supporting n-way simulated subscriber number-placed downstream lines lowered by the grid master station SPC exchange through an E1 subscriber board.

Example 2

In this embodiment, in addition to the basic structure of the dispatch trumpet number system proposed in embodiment 1, the dispatch trumpet number system further includes a first downlink E1 cable, and this embodiment is described with emphasis on the first downlink E1 cable connected to at least 30 first downlink E1 interfaces, each first downlink E1 interface includes a circuit channel, an IP channel, and a management channel; referring to fig. 2, the IPoE number-discharging module is implemented by a logic programmable FPGA chip, a special chip of the logic programmable FPGA adopts a dedicated protocol, which is beneficial to interface management of a number-discharging system, on the same hand, transmission security is guaranteed, and subsequent protocol adjustment is relatively flexible, which can realize future service expansion, on the other hand, the method can reach a balance point between deployment capacity and port cost, and is more suitable for practical scale application, the IPoE number-discharging module obtains and stores a first downlink E1 standard connection configuration mode connected with at least 30 first downlink E1 interfaces, the standard connection configuration mode includes a first downlink E1 cable serial number and an interface number of at least 30 first downlink E1 interfaces correspondingly connected thereto, the IPoE number-discharging module presets a coding indication signal for the first downlink E1 cable according to the standard connection configuration mode, and in practical implementation, the coded indication signals can be provided with indication lamps on the logic programmable FPGA chip correspondingly, when the first downlink E1 cable is connected with the corresponding first downlink E1 interface, the response of the coded indication signals preset by the IPoE number-giving module for the first downlink E1 cable is positive, and then the indication lamps are on; otherwise, the IPoE number allocation module sends an alarm. Therefore, the scheduling trumpet number allocation system supports the online detection of the connection state of the downlink E1 cable under the application of the IPoE number allocation module, and ensures the safety and reliability of data transmission.

Example 3

In this embodiment, for describing a data transmission processing process taking an IPoE number-giving module as a core, fig. 3 shows a schematic diagram of a data packet processing process of scheduling and giving numbers from a power grid master station to a remote station, first, a data frame E1 and an ethernet frame are preliminarily introduced, the E1 data frame has three modes of framing, multiframe forming and unframing, 8 bits form a Time Slot (TS) in the framed E1, 32 time slots form a frame (F), and 16 frames form a Multiframe (MF). In one frame, TS0 is mainly used to transmit Frame Alignment Signal (FAS), CRC-4 (cyclic redundancy check) and opposite-end alarm indication, TS16 is mainly used to transmit Channel Associated Signaling (CAS), multi-frame alignment signal and multi-frame opposite-end alarm indication, and TS1 to TS15 and TS17 to TS31 transmit voice or data information in 30 time slots. We call TS1 to TS15 and TS17 to TS31 "payload", and TS0 and TS16 "overhead". If the out-of-band Common Channel Signaling (CCS) is adopted, TS16 loses the purpose of transmitting signaling, the time slot can also be used for transmitting information signals, the payload of the frame structure is TS 1-TS 31, and the overhead is only TS 0; whereas in unframed E1, all 32 slots are available for transmitting valid data; ethernet frames (Ethernet frames) are link layer Protocol Data Units (PDUs) compliant with the Ethernet standard in the formats Ethernet V1, Ethernet V2, RAW 802.3, IEEE802.3/802.2 LLC, and IEEE802.3/802.2 SNAP. Most network applications now use the Ethernet 2 format, and the BPDUs between switches use the IEEE802.3/LLC format. There are also standards for managing the transmission of physical data streams in wide area networks using serial media, such as frame relay, advanced data link control, asynchronous transfer mode.

In this embodiment, referring to fig. 3, a first IP packet processing unit and a first E1 data encapsulation processing unit are disposed on a logic programmable FPGA chip of the IPoE number allocation module, the first IP packet processing unit performs transmission processing on a received IP data packet of an ethernet, the received IP data packet of the ethernet is transmitted to a first E1 data encapsulation processing unit after adding a packet header flag, a packet sequence number and a check to the IP data packet of the ethernet, the first E1 data encapsulation processing unit performs clock data processing on the IP data packet and encapsulates the IP data packet into an E1 data frame, the E1 data frame is divided into 32 time slots, each time slot transmits 1 byte, except for the time slot TS0 used for frame synchronization, other time slots can be used as transmission channels, each E1 data frame can transmit data by using 31 time slots at most, meanwhile, the E1 user board performs partition allocation on logic of a master station program control time slot, and encapsulates n-way analog user number allocation data into an E1 data frame, e1 data frame is sent to optical transmission network for transmission through n paths of first downlink E1 interface, first downlink E1 cable and second downlink E1 interface, then inputting a special dispatching small-size terminal through a third downlink E1 interface, wherein the special dispatching small-size terminal is provided with a first E1 data decapsulation processing unit and a second IP packet processing unit, the first E1 data decapsulation processing unit carries out frame clock data recovery, frame positioning and frame analysis processing on an E1 data frame to complete decapsulation to obtain an IP data fragment, the IP data fragment is transmitted to the second IP packet processing unit, the second IP packet processing unit reassembles the IP data fragment into a complete IP data packet, and judges the integrity and validity of the IP data packet according to the frame header mark, the packet sequence number and the check, therefore, the transmission performance of the data packet in the number allocation system is monitored, and the number allocation of the remote site service telephone is realized.

In the processing process of fig. 3, each path of IP data packets with an occupied bandwidth of about 100Kbps is frame-structured, so that the IP data packets can be transmitted in an E1 time slot to slice and encapsulate the IP data packets into E1 data frames, the E1 data frames are transmitted to a remote end through an E1 data link, a working clock is regenerated on a remote end device, the E1 data frames are disassembled to complete the reassembly and transmission of the IP data packets, and the IPoE (IP packet transmission on an E1 link) technology enables the device state accessed by a remote station to be known, thereby providing a technical foundation for diversified service expansion. In addition, the integrity and the legality of the data packet are judged based on the adding mode of frame header marks, packet sequence numbers and verification, so that the transmission performance of the data packet and the state of each interface port are monitored, and monitoring and alarming of a downlink E1 link are supported.

In this embodiment, a customized protocol is used for transmission of an IP data packet, and when the first IP packet processing unit performs transmission processing on a received IP data packet of an ethernet, the first IP packet processing unit filters the IP data packet that does not conform to the customized protocol according to matching between the MAC address and the IP address of the IP data packet and the customized protocol, and adds a packet header flag, a packet sequence number, and a check to the IP data packet that conforms to the customized protocol.

The system initially supports the realization of the number allocation of a remote site service telephone by a power grid master station, and also supports the uplink transmission from the remote site to the power grid master station, and supports the encapsulation, distribution and operation management of voice and signaling data and the signaling conversion of an uplink E1 signaling and a downlink E1, specifically, a schematic diagram of a data packet processing process of the uplink transmission from the remote site to the power grid master station is shown in FIG. 4, referring to FIG. 4, a second E1 data encapsulation processing unit and a third IP packet processing unit are arranged on a special dispatching small-size terminal, after the hot-key dialing, the fault self-checking and the call recording are completed by the remote site, an analog signal data packet and an IP data packet in the hot-key dialing, the fault self-checking and the call recording are transmitted to the special dispatching small-size terminal, the IP data packet is transmitted to the second E1 data encapsulation processing unit after a packet header flag, a packet sequence number and a check are added by the third IP packet processing unit, the second E1 data encapsulation unit carries out clock data processing on the IP data packet, and the IP data packet and analog signal data packets in hot key dialing, fault self-checking and call recording are encapsulated into an E1 data frame;

the optical transmission network is also provided with a first uplink E1 interface and a second uplink E1 interface, the IPoE number-placing module is also provided with a third uplink E1 interface, a second E1 data decapsulation processing unit and a fourth IP packet processing unit, an E1 data frame is transmitted to the optical transmission network through the first uplink E1 interface and is output through a second uplink E1 interface of the optical transmission network, the IPoE number-placing module detects and confirms the state of the third uplink E1 interface based on a logic programmable FPGA chip, then the E1 data frame is input to the IPoE number-placing module through a third uplink E1 interface, an E1 cable for E1 data frame transmission is arranged between the second uplink E1 interface and the third uplink E1 interface, the third uplink E1 interface comprises a circuit channel, a framing signaling channel and a unframing signaling channel, the second E1 data-decapsulation processing unit reassembles the E1 data frame into an IP packet data packet processing unit through the unframing channel, and the decapsulation processing unit repackaging the IP packet data packet processing unit after the decapsulation of the E1, and judging the integrity and the legality of the IP data packet according to the frame header mark, the packet sequence number and the verification, and transmitting the IP signal data packet and the analog signal data packet to the program-controlled switch of the power grid master station through an E1 user board so as to establish a call between the power grid master station and the remote site service phone. Therefore, the reliability and the safety of dispatching communication are ensured, the requirement of replacing PCM equipment for continuous development can be met, the integrity and the legality of an IP data packet are judged according to the frame header mark, the packet sequence number and the verification in the process of transmitting through the uplink E1 port, and the monitoring and the alarming of an uplink E1 port link can be realized.

Example 4

The present embodiment provides a system based on embodiments 1 to 3, and further provides a method for dispatching a trumpet number based on IPoE and optical transmission bearer, where a flowchart of the method is shown in fig. 5, and specifically includes the following steps:

s1, introducing an E1 user board matched and integrated with a program-controlled switch of a power grid master station, wherein the E1 user board provides n-path simulated user interfaces for the program-controlled switch of the power grid master station so as to support n-path simulated user number allocation; in this embodiment, n is at least 30; the E1 user board adopts G.703 protocol consistent with the stored program control exchange of the main station of the power grid, is matched and integrated with the stored program control exchange of the main station of the power grid, and is compatible with the technical characteristics of the stored program control exchanges provided by different service providers of the power grid.

S2, receiving n paths of simulated user numbers, IP data packets of the Ethernet and TDM frames by using an IPoE number allocation module, mapping the IP data packets of the Ethernet and multiplexing/demultiplexing the TDM frames to obtain a framed packet E1 data frame;

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A dispatch trumpet number allocation system based on IPoE and optical transmission bearing is characterized in that the system comprises:

the power grid master station program-controlled exchanger is a center for the power grid master station to issue production scheduling and instructions to the remote station;

the IPoE number allocation module receives n paths of analog user numbers, IP data packets of the Ethernet and TDM frames, maps the IP data packets of the Ethernet and multiplexes/demultiplexes the TDM frames to obtain framed packet E1 data frames; the IPoE number-giving module is provided with n paths of first downlink E1 interfaces, and the framed packet E1 data frames are sent to an optical transmission network for transmission through the n paths of first downlink E1 interfaces;

2. The IPoE and optical transmission bearer-based dispatching trumpet numbering system as claimed in claim 1, wherein the E1 user board adopts G.703 protocol consistent with the SPC exchange of the main station of the power grid, is matched and integrated with the SPC exchange of the main station of the power grid, is compatible with the technical characteristics of the SPC exchanges provided by different service providers of the power grid, and realizes logical splitting allocation of the time slots of the SPC exchange of the main station of the power grid, number allocation of the SPC exchange of the main station of the power grid, voice, and data encapsulation and checking of dispatching signaling.

3. The IPoE and optical transport bearer-based dispatch trumpet system of claim 2, further comprising an E1 concentrator box for supporting the grid main station private branch exchange to simulate the outgoing line of trumpet by n-way user through the E1 user panel.

4. The IPoE and optical transport bearer based dispatch trumpet number system of claim 1, further comprising a first downstream E1 cable, wherein the first downstream E1 cable connects n first downstream E1 interfaces, each first downstream E1 interface comprises a circuit channel, an IP channel and a management channel; the IPoE number allocation module is realized by adopting a logic programmable FPGA chip, the IPoE number allocation module acquires and stores a standard connection configuration mode of a first downlink E1 cable connected with n paths of first downlink E1 interfaces, the standard connection configuration mode comprises a first downlink E1 cable serial number and interface numbers of n paths of first downlink E1 interfaces correspondingly connected with the first downlink E1 cable serial number, the IPoE number allocation module presets a coding indication signal for the first downlink E1 cable according to the standard connection configuration mode, and when the first downlink E1 cable is connected with the corresponding first downlink E1 interface, the IPoE number allocation module responds to the coding indication signal preset for the first downlink E1 cable to be positive; otherwise, the IPoE number allocation module sends out an alarm.

5. The IPoE and optical transport bearer based scheduling trumpet numbering system as claimed in claim 4, wherein the IPoE numbering module is provided with a first IP packet processing unit and a first E1 data encapsulation processing unit on a logic programmable FPGA chip, the first IP packet processing unit performs transmission processing on the received Ethernet IP data packet, adds a packet header flag, a packet serial number and a check to the Ethernet IP data packet, and transmits the packet to the first E1 data encapsulation processing unit, the first E1 data encapsulation processing unit performs clock data processing on the IP data packet to encapsulate the IP data packet into an E1 data frame, the E1 data frame is divided into 32 time slots, each time slot transmits 1 byte, other time slots except the time slot TS0 used for frame synchronization, can be used as transmission channels, each E1 data frame can transmit data by using 31 time slots at maximum, and the E1 user board performs partition allocation on the logic of the grid program controlled switch, and n paths of analog user number data are packaged into E1 data frames, the E1 data frames are respectively sent into an optical transmission network for transmission through n paths of first downlink E1 interfaces, first downlink E1 cables and second downlink E1 interfaces, then inputting a special dispatching small terminal through a third downlink E1 interface, wherein the special dispatching small terminal is provided with a first E1 data decapsulation processing unit and a second IP packet processing unit, the first E1 data decapsulation processing unit carries out frame clock data recovery, frame positioning and frame parsing processing on an E1 data frame to complete decapsulation to obtain IP data fragments, the IP data fragments are transmitted to the second IP packet processing unit, the second IP packet processing unit reassembles the IP data fragments into a complete IP data packet, and the integrity and the legality of the IP data packet are judged according to the frame header mark, the packet sequence number and the check, so that the transmission performance of the data packet is monitored, and the number allocation of the remote site service telephone is realized.

6. The IPoE and optical transport bearer based scheduling trumpet numbering system according to claim 5, wherein the IP data packet transmission adopts a customized protocol, and when the first IP packet processing unit performs transmission processing on the received Ethernet IP data packet, the first IP packet processing unit filters the IP data packet that does not conform to the customized protocol according to the matching of the MAC address and the IP address of the IP data packet and the customized protocol, and adds a packet header flag, a packet sequence number and a check to the IP data packet that conforms to the customized protocol.

7. The IPoE and optical transport bearer based scheduling trumpet numbering system according to claim 6, wherein the optical transport network is a SDH optical transport network based on frame structure transport.

8. The IPoE and optical transport bearer based dispatch small number system as claimed in claim 4, wherein the dedicated dispatch small number terminal is provided with a second E1 data encapsulation processing unit and a third IP packet processing unit, after the remote site completes hotkey dialing, fault self-checking and call recording, the analog signal data packet and IP data packet in hotkey dialing, fault self-checking and call recording are transmitted to the dedicated dispatch small number terminal, the IP data packet is first added with packet header, packet sequence number and verification by the third IP packet processing unit and then transmitted to the second E1 data encapsulation processing unit, the second E1 data encapsulation unit performs clock data processing on the IP data packet, and the IP data packet and the analog signal data packet in hotkey dialing, fault self-checking and call recording are encapsulated into E1 data frame;

the optical transmission network is also provided with a first uplink E1 interface and a second uplink E1 interface, the IPoE number-playing module is also provided with a third uplink E1 interface, a second E1 data decapsulation processing unit and a fourth IP packet processing unit, an E1 data frame is transmitted to the optical transmission network through the first uplink E1 interface and is output through the second uplink E1 interface of the optical transmission network, the IPoE number-playing module detects and confirms the state of the third uplink E1 interface based on a logic programmable FPGA chip, then an E1 data frame is input into the IPoE number-playing module through the third uplink E1 interface, an E1 cable for E1 data frame transmission is arranged between the second uplink E1 interface and the third uplink E1 interface, the third uplink E1 interface comprises a circuit channel, a framing signaling channel and a unframing signaling channel, the second E1 data-encapsulating processing unit encapsulates the E1 data frame into an IP packet data packet through the unframing channel, and the IP packet processing unit processes the IP packet data frame through the decapsulation channel 1 after being unpacked, and judging the integrity and the legality of the IP data packet according to the frame header mark, the packet sequence number and the verification, and transmitting the IP signal data packet and the analog signal data packet to the program-controlled switch of the power grid master station through an E1 user board so as to establish a call between the power grid master station and the remote site service phone.

9. A scheduling trumpet number assignment method based on IPoE and optical transmission bearing is characterized by comprising the following steps:

10. The method for dispatching trumpets based on IPoE and optical transmission bearers according to claim 9, wherein in step S1, the E1 user board adopts a g.703 protocol consistent with the program-controlled exchange of the main station of the power grid, and is matched and integrated with the program-controlled exchange of the main station of the power grid, so as to be compatible with technical characteristics of the program-controlled exchanges provided by different service providers of the power grid.