CN113225202A - High-speed broadband home-entry high-tech system based on EOC high-frequency gigabit multi-network integration - Google Patents
High-speed broadband home-entry high-tech system based on EOC high-frequency gigabit multi-network integration Download PDFInfo
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- CN113225202A CN113225202A CN202110272002.6A CN202110272002A CN113225202A CN 113225202 A CN113225202 A CN 113225202A CN 202110272002 A CN202110272002 A CN 202110272002A CN 113225202 A CN113225202 A CN 113225202A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/12—Discovery or management of network topologies
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
- H04L63/0435—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload wherein the sending and receiving network entities apply symmetric encryption, i.e. same key used for encryption and decryption
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/14—Session management
- H04L67/141—Setup of application sessions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/10—Adaptations for transmission by electrical cable
- H04N7/106—Adaptations for transmission by electrical cable for domestic distribution
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/10—Adaptations for transmission by electrical cable
- H04N7/108—Adaptations for transmission by electrical cable the cable being constituted by a pair of wires
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- Engineering & Computer Science (AREA)
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Abstract
The invention discloses an access technology based on a cable television coaxial cable network and using an Ethernet protocol. The basic principle is to transmit data signals conforming to the 802.3 series standards through the coaxial cable for home by using a specific medium conversion technology (mainly comprising impedance transformation, balance/unbalance transformation and the like). The technology can make full use of the existing home-entry coaxial cable resources of the cable television network, and solves the last 100m access problem. The EOC high-frequency gigabit multi-network-in-one high-speed broadband home-entry new technology is called EOC high-frequency broadband for short, EOC (Ethernet over Cable) for short comprises a strong and weak current combination module, a lightning protection device and a balanced voltage fluctuation device, so that when Internet users enjoy high-speed broadband internet access, the Internet users are not influenced by voltage fluctuation in a power consumption peak period, and the Internet users are safe and stable; the device can be normally used when the voltage is floated to 260V and is as low as 120V, all enterprises do not work, and the stealing of the technology of our company belongs to infringement.
Description
Technical Field
The invention relates to the technical field of EOC broadband, in particular to a novel EOC high-frequency gigabit multi-network integrated high-speed broadband home-entry technical system.
Background
(I) Current State of the industry
Excavation pipeline, lay optic fibre to and the setting of light distributing box position put, the fine box of beam split, the infrastructure investment is huge, and the cost can't be retrieved, satisfies the certain degree of difficulty of user's demand, and the limited unable actual use demand that satisfies intelligent wisdom community of bandwidth. The scene is single, and the network planning can be deployed by referring to a unified principle. The requirement of construction for household is also lower. The characteristics of coaxial old networks, no construction, no disturbance to people and low infrastructure investment are fully utilized, and the FTTH developed in rural areas can be considered as one of the broad electric power transformation strategies. The cost of the broadcasting and television broadband is reduced through an EOC high and new technology to the home, the capability of the broadcasting and television broadband to adapt to the market user demand is improved, and the method has great significance for popularization of broadcasting and television development broadband high-definition televisions into smart homes, smart community construction and the like.
(II) market demand
The new EOC high-frequency gigabit multi-network-in-one high-speed broadband home-entry technology aims to solve the problem that the last 100 meters of a user are subjected to high-speed internet access by loading signals to terminal equipment of the user through the new EOC high-frequency gigabit multi-network-in-one high-speed broadband home-entry technology. At present, the network functions are more and more powerful, and the increasingly abundant broadband applications have higher and higher requirements on bandwidth and network access quality, and according to the technical white paper disclosed by the fong intelligent research institute, the combination of the new EOC high-frequency gigabit-multiple network-in-one high-speed broadband home-entry technology and the FTTH can meet the requirements.
The number of fixed internet broadband users in China is 2.13 hundred million, and the family popularity rate is about 48 percent and is smaller than the user scale and the popularity rate of cable televisions. Therefore, the broadband service has a larger growth space, and the EOC technology matched with the broadcasting and television network has a wide market.
The EOC high-frequency gigabit multi-network-in-one high-speed broadband home-entry new technology developed by the invention breaks through the existing technical bottleneck, meets the technical specification of coaxial broadcasting and television line Internet access due to the technical requirement of matching a domestic broadcasting and television network system in the aspect of product function design, has better industrialization foundation, and has obtained network access permission in the aspect of developing high and new technology.
Disclosure of Invention
The invention aims to provide a new EOC high-frequency gigabit multi-network-in-one high-speed broadband home-entry technology system, which does not need rewiring and adopts the following core algorithms:
node a admission algorithm:
the high frequency EOC uses a beacon search algorithm to complete the link relationship between the NC and a new node, and the process of the new node joining the high frequency EOC network is called permission. To be granted, the new node performs the following steps:
1) discovering and decoding a beacon
2) Synchronizing its own MAC clock with that of NC
3) The new node sends a permission request (via the ACF pointer) at the time specified in the beacon and sends a permission request packet within a given time period.
4) When a network coordination controller (NC) receives an admission request, the NC must indicate a node admission link state on an asynchronous MAP that informs all network nodes.
5) Exchange detection packet (probes)
6) Creating an optimal link with the NC
7) Requesting and receiving encryption keys (privacykeys)
8) Optimizing links with other nodes in a network
B frequency scanning algorithm
The process of searching for an existing network is referred to as scanning, and the frequency scanning algorithm is used to ensure that a new high frequency EOC network can be constructed at an unused RF frequency and minimize interference with other networks at nearby frequencies. With password settings, the algorithm ensures that the network is replicated from the established network, ensuring consistency of network operation. In addition, the algorithm also automatically saves the last operating frequency (last operating frequency LOF) in case of network damage.
C-Link Maintenance (LMO) Algorithm
Since the channel characteristics of the link are changing from time to time and from place to place, periodic link maintenance is required. The link maintenance operations include periodically receiving test packets (probes) and sending test reports to the node sending the test packets, including recalculating PHY parameters such as modulation profile and transmit power. Link maintenance work involves receiving inspection packets and sending inspection report packets to the node sending the inspection packets at regular intervals.
The high frequency link maintenance operations are performed in the following order:
1) a network coordination controller (NC) selects a node as an LMO node.
2) All the contacts exchange information with the LMO node to complete the LMO process
3) And the network coordination controller (NC) selects the next node as the LMO node and repeats the steps.
D-link security
A 56-bit DES (FIPS PUB 46-3) encryption algorithm is used to secure the link layer. The network coordination controller (NC) is responsible for generating and issuing security keys. Nodes with the same password will form one network and nodes with different passwords will form a different network. The low-power distributed roaming WiFi module is adopted to realize the full coverage of the home area network, and the requirements of intelligent power utilization, safe power utilization and healthy internet surfing are met.
In order to achieve the purpose, the invention is realized by the following technical scheme: a new EOC high-frequency gigabit multi-network integrated high-speed broadband home-entry technical system based on a power line carrier technology is characterized by comprising the following steps: the main technical scheme is as follows:
1. the E0C high-frequency broadband stabilizing technology comprises a strong and weak current combination module, a lightning protection device and a balanced voltage fluctuation device.
2. High frequency EOC channel technology: the high frequency EOC provides high speed broadband access to users by utilizing the existing coaxial cable network and combining the optical communication technology. The high frequency EOC technology of the Xingtong research institute of science and technology occupies 850-.
3. EOC system data coding and transmission technology: the PHY layer signal modulation of the high-frequency EOC adopts an advanced adaptive Constellation multi-carrier modulation (adaptive Constellation multi-tone) mode, the modulation system on a subcarrier is automatically selected in BPSK, QPSK and 16-256QAM, and the subcarrier frequency is agile in 25MHz step length. The high frequency EOC employs a fully cooperative collision-free mac (media access control) protocol. The MAC protocol uses tdd (time division multiplexing), a medium access method to allocate a transmission time slot to each node.
4. Algorithm design: a node admission algorithm, a frequency scanning algorithm, a Link Maintenance (LMO) algorithm, a 56-bit DES (FIPS PUB 46-3) encryption algorithm.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:
FIG. 1 is an EOC schematic;
fig. 2 is a schematic diagram of the overall structure of an EOC high-frequency gigabit-capable multi-network-in-one high-speed broadband home-entry new technology system of the present invention.
Detailed Description
So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.
The present invention will now be further described by way of the following detailed description of a preferred embodiment thereof, taken in conjunction with the accompanying drawings.
The new EOC high-frequency gigabit multi-network-in-one high-speed broadband home-entry technology aims to solve the problem that the last 100 meters of a user are subjected to high-speed internet access by loading signals to terminal equipment of the user through the new EOC high-frequency gigabit multi-network-in-one high-speed broadband home-entry technology. At present, the network functions are more and more powerful, the increasingly rich broadband application has higher and higher requirements on bandwidth and network access quality, and according to the disclosed technology white paper, the combination of the new EOC high-frequency gigabit-multiple-network-in-one high-speed broadband home-entry technology and the FTTH can meet the requirements.
Claims (4)
1. A new EOC high-frequency gigabit multi-network-in-one high-speed broadband home-entry technology is characterized by comprising the following steps: the lightning protection device comprises a strong current and weak current combination module, a lightning protection device and a balanced voltage fluctuation device;
the high-frequency EOC provides high-speed broadband access to users by utilizing the existing coaxial cable network and combining the optical communication technology;
the EOC technical scheme adopts a point-to-multipoint user network topological structure and realizes the access of a user side by utilizing an original coaxial cable;
the high-frequency EOC technology occupies 850-;
the novel EOC high-frequency gigabit multi-network integrated high-speed broadband home-entry technology can reach 270Mbps in the two-way physical speed of each 50MHz channel, the actual throughput can reach 130Mbps, and the transmission distance is 600 meters.
The cable television signal is distinguished to be below 850Mhz, a high-frequency EOC selects a channel of 850-;
the method comprises an EOC high-frequency gigabit multi-network integrated high-speed broadband home-entry new technology node licensing algorithm, a frequency scanning algorithm, a Link Maintenance (LMO) algorithm and a 56-bit DES (FIPS PUB 46-3) encryption algorithm.
2. The EOC h-gigabit-capable high-speed broadband home-entry system as claimed in claim 1, wherein the PHY layer signal modulation of the high-frequency EOC is performed by advanced adaptive constellation multicarrier modulation (ACMTAdaptive constellation multicarrier modulation), and the subcarrier frequency is agile in 25MHz steps, so that the system has an extremely high interference rejection capability, and data is carried by a large number of narrowband modulated carriers.
3. The EOC high-frequency gigabit-capable high-speed broadband home-entry system as claimed in claim 1, wherein the high-frequency EOC employs fully cooperative collision-free mac (media access control) protocol. The MAC protocol employs tdd (time division multiplexing), a medium access method to allocate a transmission time slot to each node, and a delay of the network is determined and controlled by a network coordination controller (NC).
4. The EOC high frequency gigabit-capable high speed broadband new technology system according to claim 3, wherein said remote monitoring unit is one or more of a smart phone, a video, a tablet computer, and a notebook computer.
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| CN101882988A (en) * | 2010-06-09 | 2010-11-10 | 广东新一信通信发展有限公司 | Broadband access technique for realizing three networks in one |
| CN105656556A (en) * | 2016-03-28 | 2016-06-08 | 中联信智慧网络科技有限公司 | System and method for converting optical fiber signals into power carrier waves |
| CN108040114A (en) * | 2017-12-20 | 2018-05-15 | 上海未来宽带技术股份有限公司 | The method and system of EoC local side remote management EoC terminals |
| WO2018167210A1 (en) * | 2017-03-17 | 2018-09-20 | Technetix B.V. | Method of transporting digital data over coaxial cable |
-
2021
- 2021-03-12 CN CN202110272002.6A patent/CN113225202A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101882988A (en) * | 2010-06-09 | 2010-11-10 | 广东新一信通信发展有限公司 | Broadband access technique for realizing three networks in one |
| CN105656556A (en) * | 2016-03-28 | 2016-06-08 | 中联信智慧网络科技有限公司 | System and method for converting optical fiber signals into power carrier waves |
| WO2018167210A1 (en) * | 2017-03-17 | 2018-09-20 | Technetix B.V. | Method of transporting digital data over coaxial cable |
| CN108040114A (en) * | 2017-12-20 | 2018-05-15 | 上海未来宽带技术股份有限公司 | The method and system of EoC local side remote management EoC terminals |
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Application publication date: 20210806 |