CN103647627B - Networking based on carrier wave time service narrows band power line carrier equipment - Google Patents

Networking based on carrier wave time service narrows band power line carrier equipment Download PDF

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Publication number
CN103647627B
CN103647627B CN201310674537.1A CN201310674537A CN103647627B CN 103647627 B CN103647627 B CN 103647627B CN 201310674537 A CN201310674537 A CN 201310674537A CN 103647627 B CN103647627 B CN 103647627B
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carrier
module
carrier equipment
equipment
carrier wave
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CN201310674537.1A
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CN103647627A (en
Inventor
闫磊
张辉
金燊
许长忠
吴立文
李信
尤新宇
白杰
常海娇
纪雨彤
于然
许鸿飞
田宇
李雪梅
袁卫国
罗先南
樊强
何迎利
张立武
蔡世龙
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State Grid Corp of China SGCC
Nari Information and Communication Technology Co
Nanjing NARI Group Corp
Information and Telecommunication Branch of State Grid Jibei Electric Power Co Ltd
Langfang Power Supply Co of State Grid Jibei Electric Power Co Ltd
Tangshan Power Supply Co of State Grid Jibei Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
Nari Information and Communication Technology Co
Nanjing NARI Group Corp
Information and Telecommunication Branch of State Grid Jibei Electric Power Co Ltd
Langfang Power Supply Co of State Grid Jibei Electric Power Co Ltd
Tangshan Power Supply Co of State Grid Jibei Electric Power Co Ltd
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Application filed by State Grid Corp of China SGCC, Nari Information and Communication Technology Co, Nanjing NARI Group Corp, Information and Telecommunication Branch of State Grid Jibei Electric Power Co Ltd, Langfang Power Supply Co of State Grid Jibei Electric Power Co Ltd, Tangshan Power Supply Co of State Grid Jibei Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201310674537.1A priority Critical patent/CN103647627B/en
Publication of CN103647627A publication Critical patent/CN103647627A/en
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Publication of CN103647627B publication Critical patent/CN103647627B/en
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Abstract

The invention discloses in a kind of networking based on carrier wave time service and narrow band power line carrier equipment, including main carrier equipment with from carrier equipment, microprocessor module and the power module, memory module, interface module and the carrier wave analog module that are attached thereto it is each equipped with on principal and subordinate's carrier equipment, it is loaded with time service module on the microprocessor module of main carrier equipment, authentication module, Packet reassembling parsing module, carrier wave analog circuit control module, passage takies logic authorization module and port logic maps control module;From the microprocessor module of carrier equipment, it is loaded with authentication module, Packet reassembling parsing module, carrier wave analog circuit control module and port logic maps control module.The present invention uses carrier wave time service, principal and subordinate's carrier equipment certification, passage to take the modes such as mandate, realizes promoting the transmission efficiency of medium-voltage carrier network by improving carrier channel utilization rate.

Description

Based on carrier wave time service Networking in narrow band power line carrier equipment
Technical field
The present invention relates to a kind of networking based on carrier wave time service narrows band power line carrier equipment, belong to medium voltage power line ZAP field.
Background technology
Medium voltage power line ZAP is mainly used in adapted electrical domain in power system, and adapted electricity requires certain real-time.Existing medium-voltage carrier equipment 1 is much more main from mode networking and use polling mechanism to transmit data, if 1 main 5 as a example by mode networking, main carrier be about 3 seconds from the carrier wave question and answer time, then completing 5 from carrier equipment data transfer time is 15 seconds.If there is packet loss in polling mode, taking retransmission mechanism, then in whole poll time, increasing time-out time and retransmission time, causing whole medium-voltage carrier network transmission efficiency relatively low.
Summary of the invention
For making up the deficiencies in the prior art, the present invention proposes in a kind of networking based on carrier wave time service and narrows band power line carrier equipment, carrier wave time service, principal and subordinate's carrier equipment certification, passage is used to take the modes such as mandate, realize promoting the transmission efficiency of medium-voltage carrier network by improving carrier channel utilization rate, meet IPization carrier network development trend.
For realizing the object of the invention, the technical solution used in the present invention is as follows:
Networking based on carrier wave time service narrows band power line carrier equipment, including main carrier equipment with from carrier equipment, described main carrier equipment is connected with electrical power distribution automatization system by using RJ45 network interface, from carrier equipment by using RJ45 network interface to be connected with distribution power automation terminal, the AFE (analog front end) of described principal and subordinate's carrier equipment all accesses electric lines of force, microprocessor module and the power module being attached thereto it is each equipped with on described principal and subordinate's carrier equipment, memory module, interface module and carrier wave analog module, it is loaded with time service module on the microprocessor module of described main carrier equipment, authentication module, Packet reassembling parsing module, carrier wave analog circuit control module, passage takies logic authorization module and port logic maps control module;The described authentication module that is loaded with from the microprocessor module of carrier equipment, Packet reassembling parsing module, carrier wave analog circuit control module and port logic map control module;
Described time service module for main carrier equipment to from carrier equipment carry out passage take the time-division authorize, it is achieved whole carrier network clock is consistent;
The authentication module of described principal and subordinate's carrier equipment has been used for from carrier equipment in the registration of main carrier equipment, and obtains the passage that main carrier equipment distributes to from carrier equipment and take logic ID;
Described passage takies logic authorization module and takies time slot distribution in order to realize carrier network passage;
The carrier wave analog circuit control module of described principal and subordinate's carrier equipment is for carrying out logic control to carrier wave analog module;
The Packet reassembling module of described principal and subordinate's carrier equipment and port logic map control module in order to realize carrier network IPization.
Aforesaid memory module is for storing during principal and subordinate's carrier equipment runs the data produced, memory module includes that Synchronous Dynamic Random Access Memory and flash storage, described Synchronous Dynamic Random Access Memory are connected with described microprocessor module respectively with flash storage.
The interface module of aforesaid main carrier equipment includes configuring interface, data-interface and network management interface, the described interface module from carrier equipment includes configuring interface and data-interface, wherein, the data-interface access service application main station system of main carrier equipment, from the data-interface access service terminal of carrier equipment, data-interface realizes principal and subordinate's carrier equipment service data interaction, the network management interface access carrier webmaster of main carrier equipment, realizing Remote configuration and management, the dispensing interface of described principal and subordinate's carrier equipment is used to principal and subordinate's carrier equipment parameter configuration.
Aforesaid carrier wave analog module is made up of carrier chip and the analog signal processing circuit being attached thereto, carrier chip realizes service digital signal and carrier wave analogue signal is mutually changed, and analog signal processing circuit realizes the carrier wave analog signal modulation-demodulation sending and receiving.
The AFE (analog front end) of aforesaid principal and subordinate's carrier equipment includes carrier power amplifier, coupling filtering and impedance matching function module, carrier wave analog-modulated demodulated signal for being sent by carrier wave analog module and receiving is nursed one's health, and then the signal after conditioning is coupled into electric lines of force and realizes service data interaction.
The detailed process of aforesaid principal and subordinate's carrier equipment authentication module is: intercept track data from carrier equipment, waits that data feedback channel takes up room gap, sends device authentication short message by authentication module;The authentication module of main carrier equipment receives device authentication short message, utilizes down going channel to take up room gap, issues device authentication license message, and distribution occasional passage takies logic ID;Receive device authentication license message from the authentication module of carrier equipment, wait that occasional passage takies logic ID gap, send device authentication infomational message;The authentication module of main carrier equipment receives device authentication infomational message, utilizes down going channel to take up room gap, issues device authentication license confirmation message and distributes passage and take logic ID.
Aforesaid time service module carries out the process of time service: after carrier equipment receives certification and adds carrier network, information update from carrier equipment timer when carrier equipment receives school, time delay when confirming when returning to school and calculate school interval time according to transmitting-receiving message, revises from carrier equipment timer.
Aforesaid passage takies logic authorization module carry out passage and take the process of mandate be: carrier equipment line speed and circuit maximum transmitted message length determine that passage can be divided into how many time slots, according to main carrier equipment is pre-configured, channel slot is divided, channel slot with from carrier equipment logic ID one_to_one corresponding, the employing of up-downgoing channel grant interleaves, non-mode of dividing equally, and allocation proportion saves according to carrier network scalable.
Aforesaid carrier network IPization refers to: principal and subordinate's carrier equipment receives carrier link message, carrier link message is converted to TCP/IP message and is transmitted by Packet reassembling parsing module, map control module by port logic the most again to realize from carrier equipment configuration data when device authentication, main carrier equipment issue.
By using technique scheme, it is consistent that the present invention uses carrier wave time service to realize whole carrier network markers, on the premise of whole carrier network markers is consistent, just can divide carrier channel;Use carrier equipment certification to distribute logic ID i.e. passage to the carrier equipment of certification and take logic ID, every carrier equipment can be made to take carrier channel in assigned timeslot;Use port logic mapping control carrier terminal equipment port to using standard ethernet form when backstage or terminal, can use in the carrier terminal equipment carrier link with carrier terminal equipment and simplify data frame format to reduce carrier channel bandwidth requirement, it is achieved medium-voltage carrier network IPization.Carrier networking disclosed by the invention uses full IP framework, all supports that IP mode accesses, and improves the transparency of network, by device authentication mechanism and the management equipment of effective monitoring in real time, beneficially network management and fault diagnosis;The present invention is applicable to the group-net communication of Complex Situation, can effectively substitute existing carrier equipment.
Accompanying drawing explanation
Fig. 1 is the hardware module schematic diagram of principal and subordinate's carrier equipment of the present invention;
Fig. 2 be the present invention principal and subordinate's carrier equipment hardware module in high-level schematic functional block diagram;
Fig. 3 is principal and subordinate's carrier equipment certification time service logic chart of the present invention;
Fig. 4 is that in embodiments of the invention, carrier network passage takies time slot distribution schematic diagram;
Fig. 5 is the carrier equipment time service error correction logic chart of the present invention;
Fig. 6 be in embodiments of the invention one main two from carrier equipment networking schematic diagram.
Detailed description of the invention
With detailed description of the invention, the present invention is further elaborated below in conjunction with the accompanying drawings.
As depicted in figs. 1 and 2, present invention networking based on carrier wave time service narrows band power line carrier equipment, including main carrier equipment with from carrier equipment, wherein main carrier equipment is by using RJ45 network interface to be connected with electrical power distribution automatization system, from carrier equipment by using RJ45 network interface to be connected with distribution power automation terminal, the AFE (analog front end) of principal and subordinate's carrier equipment all accesses electric lines of force;Microprocessor module and the power module, memory module, interface module and the carrier wave analog module that are attached thereto it is each equipped with on principal and subordinate's carrier equipment, it is loaded with time service module on the microprocessor module of main carrier equipment, authentication module, Packet reassembling parsing module, carrier wave analog circuit control module, passage takies logic authorization module and port logic maps control module;From the microprocessor module of carrier equipment, it is loaded with authentication module, Packet reassembling parsing module, carrier wave analog circuit control module and port logic maps control module;
Memory module is for storing during principal and subordinate's carrier equipment runs the data produced, and such as passage takies logic ID etc., and memory module includes Synchronous Dynamic Random Access Memory and flash storage;Logic control module realizes analog signal processing circuit and carrier chip logic control function.
The interface module of main carrier equipment includes configuring interface, data-interface and network management interface, includes configuring interface and data-interface from the interface module of carrier equipment;Wherein, the data-interface of main carrier equipment is connected with service application main station system, it is connected with service terminal from the data-interface of carrier equipment, data-interface realizes principal and subordinate's carrier equipment service data interaction, the network management interface access carrier webmaster of main carrier equipment, support snmp protocol, realize Remote configuration and management, the dispensing interface of principal and subordinate's carrier equipment is used to principal and subordinate's carrier equipment parameter configuration, and as pre-configured in master slave mode, data-interface parameter, running parameter, carrier network, passage takies than configuration, webmaster parameter configuration etc..
Carrier wave analog module is made up of carrier chip and the analog signal processing circuit being attached thereto, and carrier chip realizes service digital signal and carrier wave analogue signal is mutually changed, and analog signal processing circuit realizes the carrier wave analog signal modulation-demodulation sending and receiving.
Carrier wave analog circuit control module is for carrying out logic control to carrier wave analog module.
The AFE (analog front end) of principal and subordinate's carrier equipment includes carrier power amplifier, coupling filtering and impedance matching function module, carrier wave analog-modulated demodulated signal for being sent by carrier wave analog module and receiving is nursed one's health, and then the signal after conditioning is coupled into electric lines of force and realizes service data interaction.
As shown in Figure 3, present invention networking based on carrier wave time service narrows band power line carrier equipment and uses device authentication management, for completing from carrier equipment in the registration of main carrier equipment, and obtain the passage that main carrier equipment distributes to from carrier equipment and take logic ID, device authentication process is realized by the authentication module of principal and subordinate's carrier equipment, and detailed process is, intercepts track data from carrier equipment, wait that data feedback channel takes up room gap, send device authentication short message by authentication module;The authentication module of main carrier equipment receives device authentication short message, utilizes down going channel to take up room gap, issues device authentication license message, and distribution occasional passage takies logic ID;Receive device authentication license message from the authentication module of carrier equipment, wait that occasional passage takies logic ID gap, send device authentication infomational message;The authentication module of main carrier equipment receives device authentication infomational message, utilizes down going channel to take up room gap, issues device authentication license confirmation message and distributes passage and take logic ID;Message identifying sends and realizes 3 retransmission mechanisms of time-out.
As shown in Figure 3, narrowing band power line carrier equipment in present invention networking based on carrier wave time service uses carrier system to carry out time service, unified whole carrier network clock, time service process is realized by the time service module of main carrier equipment, is embodied in main carrier equipment for carrying out passage from carrier equipment and take the time-division and authorize after device authentication.Main carrier equipment can be obtained by grid reference clock source fiducial time, it is possible to configuration carrier network fiducial time on main carrier equipment.Carrier wave time service process and then device authentication process, after receiving certification from carrier equipment and add carrier network, information update from carrier equipment timer when carrier equipment receives school, time delay when confirming when returning to school and calculate school interval time according to transmitting-receiving message, revises from carrier equipment timer.
The specific embodiment revised when giving carrier wave school as shown in Figure 5, main carrier equipment is when the T1 moment issues school, from carrier equipment, when t time delay receives school and T1 is as from carrier equipment markers, from carrier wave acknowledgement frame band T2 markers when the T2 moment returns to school, main carrier equipment acknowledgement frame during target school when the T3 moment receives band T2, then t time-delay calculation is (T3-T1)/2(T2-T1).
Present invention networking based on carrier wave time service narrows band power line carrier equipment by the passage of main carrier equipment take logic authorization module realize carrier network passage take time slot distribute;Passage takies licensing process and describes: carrier equipment line speed and circuit maximum transmitted message length can determine that passage can be divided into how many time slots, according to main carrier equipment is pre-configured, channel slot is divided, channel slot with from carrier equipment logic ID one_to_one corresponding, the employing of up-downgoing channel grant interleaves, non-mode of dividing equally, and allocation proportion can be joined according to carrier network scale.Each passage takies gap need to take into full account passage burst collision, and before each gap, 10% and rear 10% does not uses.Main carrier equipment on-line is added up from the online situation of carrier equipment, dynamically adjusts passage and takies mandate.Principal and subordinate's carrier equipment takies the passage of logic ID and main carrier equipment according to own channels and takies mandate and carry out time division data communication.
In specific embodiment as shown in Fig. 4, main carrier equipment utilization down going channel takies when gap issues school and passage takies mandate.1 main 2 is time division duplex from carrier network up-downgoing passage, and taking allocations ratio at up-downgoing passage is 2:1, and at 1 descending time slot immediately 2 ascending time slots, ascending time slot is followed successively by logic ID 1, logic ID 2, free logical ID and empty slot circulation;It is that 2:1 or 3:1 can configure that 1 master 3 takies gap-ratio from the optional passage of carrier network, when taking gap-ratio and being 2:1, ascending time slot is followed successively by logic ID 1, logic ID 2, logic ID 2 and free logical ID, and when taking gap-ratio and being 3:1, ascending time slot is followed successively by logic ID 1, logic ID 2, logic ID 2, free logical ID and two empty slot circulations.
Present invention networking based on carrier wave time service narrows the band power line carrier equipment Packet reassembling module by principal and subordinate's carrier equipment and port logic maps control module in order to realize carrier network IPization.Principal and subordinate's carrier equipment receives carrier link message, carrier link message is converted to TCP/IP message and is transmitted by Packet reassembling parsing module, map control module by port logic the most again to realize from carrier equipment configuration data when device authentication, main carrier equipment issue.
The present invention is that adapted electrical communication system provides a reliable passage, efficiently solves adapted electrical communication system " last one kilometer " and covers a difficult problem.
The workflow of carrier equipment of the present invention is: 1) connected mode: main carrier device data interface access service application main station system, network management interface access carrier webmaster, AFE (analog front end) accesses electric lines of force, accesses electric lines of force from carrier equipment data-interface access service terminal, AFE (analog front end);2) parameter configuration: by configuring interface setting principal and subordinate's carrier parameter, passage pre-configured including master slave mode, data-interface parameter, running parameter, carrier network takies than configuration, webmaster parameter configuration etc.;3) carrier network networking: after principal and subordinate's carrier equipment normal configuration is run, actively authentication information is sent to main carrier equipment by authentication module from carrier equipment, main carrier receives and judges whether by from carrier wave certification and distribute logic ID from the authentication information of equipment further according to carrier network is pre-configured, main carrier equipment occupies logic authorization module by authentication module and passage and realizes carrier network networking, and main carrier equipment will utilize carrier wave time service to realize carrier network time unification by time service module;4) business data transmission: after carrier network networking, principal and subordinate's carrier equipment all sends business datum at the time slot of distribution, service application main website and service terminal are by data-interface access carrier equipment, realize service data interaction, principal and subordinate's carrier equipment maps control module by port logic and Packet reassembling parsing module realizes carrier network IPization, realizes business datum modulating and demodulating signal by carrier wave analog circuit control module;5) network management interface: support snmp protocol, access carrier webmaster, it is achieved Remote configuration and management.
The 10kV electric line figure that one, Tu6Shi transformer station is concrete, for completing terminal data communication at circuit 2, builds 1 main 2 from carrier network, employing time service networking mechanism.Main carrier equipment is positioned at transformer station, and 2 lay respectively at end side from carrier equipment.Configuration main carrier equipment carrier network 10.1.1.0/24, IP address of equipment 10.1.1.2/24, port 1024 correspondence takies logic ID 1 from carrier equipment 1 and predistribution passage, port 1025 correspondence takies logic ID 2 from carrier equipment 2 and predistribution passage, passage takies the employing non-equal proportion by subtraction of 2:1, main carrier default logic ID 0.Configuration is from carrier equipment 1 carrier network 10.1.1.0/24, IP address of equipment 10.1.1.3/24, from carrier equipment 2 carrier network 10.1.1.0/24, IP address of equipment 10.1.1.4/24.
And register to main carrier equipment initiating equipment certification from carrier equipment active respectively, it is thus achieved that time service and passage take mandate.Main equipment uses port mapping i.e. service application main website program will to be passed on the data port from carrier wave 1 by carrier network for 10.1.1.2 port 1024 transceiving data.Being 10.1.1.3 from carrier equipment IP address, IP:10.1.1.3 need to be set up TCP link by service terminal 1, and terminal unit 1 is i.e. mapped as the 10.1.1.2 port 1024 of main carrier equipment.In like manner service terminal equipment 2 is mapped as the 10.1.1.2 port 1025 of main carrier equipment.Carrier equipment all sends data in authorizing time slot, it is achieved time-division duplex, so that the IPization of real-time performance carrier network.

Claims (9)

1. networking based on carrier wave time service narrows band power line carrier equipment, it is characterized in that, including main carrier equipment with from carrier equipment, described main carrier equipment is connected with electrical power distribution automatization system by using RJ45 network interface, from carrier equipment by using RJ45 network interface to be connected with distribution power automation terminal, the AFE (analog front end) of described principal and subordinate's carrier equipment all accesses electric lines of force, microprocessor module and the power module being attached thereto it is each equipped with on described principal and subordinate's carrier equipment, memory module, interface module and carrier wave analog module, it is loaded with time service module on the microprocessor module of described main carrier equipment, authentication module, Packet reassembling parsing module, carrier wave analog circuit control module, passage takies logic authorization module and port logic maps control module;The described authentication module that is loaded with from the microprocessor module of carrier equipment, Packet reassembling parsing module, carrier wave analog circuit control module and port logic map control module;
Described time service module for main carrier equipment to from carrier equipment carry out passage take the time-division authorize, it is achieved whole carrier network clock is consistent;
The authentication module of described principal and subordinate's carrier equipment has been used for from carrier equipment in the registration of main carrier equipment, and obtains the passage that main carrier equipment distributes to from carrier equipment and take logic ID;
Described passage takies logic authorization module and takies time slot distribution in order to realize carrier network passage;
The carrier wave analog circuit control module of described principal and subordinate's carrier equipment is for carrying out logic control to carrier wave analog module;
The Packet reassembling parsing module of described principal and subordinate's carrier equipment and port logic map control module in order to realize carrier network IPization.
Networking based on carrier wave time service the most according to claim 1 narrows band power line carrier equipment, it is characterized in that, described memory module is for storing during principal and subordinate's carrier equipment runs the data produced, memory module includes that Synchronous Dynamic Random Access Memory and flash storage, described Synchronous Dynamic Random Access Memory are connected with described microprocessor module respectively with flash storage.
Networking based on carrier wave time service the most according to claim 1 narrows band power line carrier equipment, it is characterized in that, the interface module of described main carrier equipment includes configuring interface, data-interface and network management interface, the described interface module from carrier equipment includes configuring interface and data-interface, wherein, the data-interface access service application main station system of main carrier equipment, from the data-interface access service terminal of carrier equipment, data-interface realizes principal and subordinate's carrier equipment service data interaction, the network management interface access carrier webmaster of main carrier equipment, realize Remote configuration and management, the configuration interface of described principal and subordinate's carrier equipment is used to principal and subordinate's carrier equipment parameter configuration.
Networking based on carrier wave time service the most according to claim 1 narrows band power line carrier equipment, it is characterized in that, described carrier wave analog module is made up of carrier chip and the analog signal processing circuit being attached thereto, carrier chip realizes service digital signal and carrier wave analogue signal is mutually changed, and analog signal processing circuit realizes the carrier wave analog signal modulation-demodulation sending and receiving.
Networking based on carrier wave time service the most according to claim 1 narrows band power line carrier equipment, it is characterized in that, the AFE (analog front end) of described principal and subordinate's carrier equipment includes carrier power amplifier, coupling filtering and impedance matching function module, carrier wave analog-modulated demodulated signal for being sent by carrier wave analog module and receiving is nursed one's health, and then the signal after conditioning is coupled into electric lines of force and realizes service data interaction.
Networking based on carrier wave time service the most according to claim 1 narrows band power line carrier equipment, it is characterized in that, the detailed process of described principal and subordinate's carrier equipment authentication module is: intercept track data from carrier equipment, wait that data feedback channel takes up room gap, send device authentication short message by authentication module;The authentication module of main carrier equipment receives device authentication short message, utilizes down going channel to take up room gap, issues device authentication license message, and distribution occasional passage takies logic ID;Receive device authentication license message from the authentication module of carrier equipment, wait that occasional passage takies logic ID gap, send device authentication infomational message;The authentication module of main carrier equipment receives device authentication infomational message, utilizes down going channel to take up room gap, issues device authentication license confirmation message and distributes passage and take logic ID.
Networking based on carrier wave time service the most according to claim 1 narrows band power line carrier equipment, it is characterized in that, described time service module carries out the process of time service: after carrier equipment receives certification and adds carrier network, information update from carrier equipment timer when carrier equipment receives school, time delay when confirming when returning to school and calculate school interval time according to transmitting-receiving message, revises from carrier equipment timer.
Networking based on carrier wave time service the most according to claim 1 narrows band power line carrier equipment, it is characterized in that, described passage takies logic authorization module carry out passage and take the process of mandate be: carrier equipment line speed and circuit maximum transmitted message length determine that passage can be divided into how many time slots, according to main carrier equipment is pre-configured, channel slot is divided, channel slot with from carrier equipment logic ID one_to_one corresponding, the employing of up-downgoing channel grant interleaves, non-mode of dividing equally, and allocation proportion saves according to carrier network scalable.
Networking based on carrier wave time service the most according to claim 1 narrows band power line carrier equipment, it is characterized in that, described carrier network IPization refers to: principal and subordinate's carrier equipment receives carrier link message, carrier link message is converted to TCP/IP message and is transmitted by Packet reassembling parsing module, map control module by port logic the most again to realize from carrier equipment configuration data when device authentication, main carrier equipment issue.
CN201310674537.1A 2013-12-11 2013-12-11 Networking based on carrier wave time service narrows band power line carrier equipment Active CN103647627B (en)

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CN104158565B (en) * 2014-08-07 2016-01-20 深圳供电局有限公司 A kind of method and apparatus of carrier equipment management
CN104660445B (en) * 2015-01-21 2017-11-21 国家电网公司 Power line carrier system and its network-building method based on path cognition

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CN203313213U (en) * 2013-01-24 2013-11-27 上海芯域微电子有限公司 Power line carrier multi-media high-speed broadband Internet terminal device
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