CN101459834A - Communication HFC system for intelligent housing district - Google Patents
Communication HFC system for intelligent housing district Download PDFInfo
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- CN101459834A CN101459834A CNA2007101509112A CN200710150911A CN101459834A CN 101459834 A CN101459834 A CN 101459834A CN A2007101509112 A CNA2007101509112 A CN A2007101509112A CN 200710150911 A CN200710150911 A CN 200710150911A CN 101459834 A CN101459834 A CN 101459834A
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- hfc
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Abstract
The invention belongs to a communication HFC system of an intelligent residence community, wherein the system comprises a front end CMTS, a cable modem located on the user end, and a transmission device, data frames of the CMTS, which are received from the network, are packed in an MPEG-2TS frame, and are modulated into RF signals through downgoing data and are output to a HFC network, simultaneously upgoing data is received and is converted into frames of an Ethernet for transmitting to the network. The basic function of the CM of the user end is that upgoing digital information is modulated into PF signals, the downgoing PF signals are modulated into digital signals, and data is extracted from the MPEG-2TS frame and is converted into the frames of the Ethernet for transmitting to the network. The system is a communication HFC system of an intelligent residence community, which has the advance, the expansibility and high cost performance.
Description
Technical field
The invention belongs to communication technical field, especially a kind of communication HFC system for intelligent housing district.
Background technology
China's cable TV coverage is wide, and user's popularity rate height is another large resource net outside the telecommunications network.Along with the development of technology, cable television network progressively develops into two-way HFC integrated information net, except that transmitting conventional broadcast television signal, can also carry out high-speed data transmission, transmitted image, multi-medium datas such as data and voice.The two-way hybrid fiber/ coax, HFC transmission network of HFC is delivered to the optical node of each sub-district from the Headend center with optical fiber with signal, is connected with the user by coaxial cable distribution net from optical node.HFC net effective network bandwidth is 80mhz, meets abundant band resource, and with the following band transmissions upstream data. signals of 42mhz, SO-550MHZ is used to transmit the common broadcast TV signal, and 550-850MHZ is used for the transmitting downlink data signal.HFC net bandwidth, speed is fast, and dependable performance is stable, is the desirable information transmission network platform of intelligent housing district.The hfc plant system is mainly by the CMTS that is positioned at front end, the cable modem and the transmission equipment that are positioned at user side are formed, the Frame that its operation principle: CMTS accepts from network is encapsulated in the MPEG-2TS frame, become the RF signal to output to the HFC net by descending digital modulation, accept upstream data simultaneously, and the frame that converts Ethernet to sends network to.The basic training what one is particularly good at of the CM of user side is modulated into the PF signal with upstream digital information, and descending PF signal is demodulated into digital signal, the certificate of from MPEG-2 TS frame, isolating, and the frame that converts Ethernet to sends network to.The basic function of the CM of user side is that digital uplink signal is demodulated to the RF signal, descending RF signal is demodulated into digital signal, from the MPEG-2TS frame, extract data out, convert the data of Ethernet to, when connecting, do not take a fixed-bandwidth with CM user, but share with other active users by the 10/100baset self adaptation, only in the moment that sends and accept data, use Internet resources, it supports the multimedia service of different brackets by MAC control user channel allocations and competition.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of advance that has is provided, autgmentability, the communication HFC system for intelligent housing district of high performance-price ratio.
A kind of communication HFC system for intelligent housing district, it is characterized in that: this system comprises: the CMTS of front end, the cable modem and the transmission equipment that are positioned at user side are formed, the Frame that this CMTS accepts from network is encapsulated in the MPEG-2TS frame, become the RF signal to output to the HFC net by descending digital modulation, accept upstream data simultaneously, and the frame that converts Ethernet to sends network to.The basic training what one is particularly good at of the CM of user side is modulated into the PF signal with upstream digital information, and descending PF signal is demodulated into digital signal, the certificate of from the MPEG-2TS frame, isolating, and the frame that converts Ethernet to sends network to.
And user side pc directly connects cm by 10-100base-t self adaptation Ethernet interface, realizes that the bandwidth of the descending 36mbps transmission rate of up 10mbps inserts.
And user side pc inserts the HFC net by hub or the shared cm of multi-layer switches.
And user side pc is by the access via telephone line of local area network (LAN) high speed.
Advantage of the present invention and beneficial effect are:
1. this communication HFC system for intelligent housing district is for the domestic consumer, user pc directly connects cm by 10-100base-t self adaptation Ethernet interface, the bandwidth that realizes the descending 36mbps transmission rate of up 10mbps inserts, also can a plurality of users bandwidth by hub insert.Also can the shared cm of a plurality of users, share the up-downgoing transmission bandwidth, to reduce cost of access.
2. this communication HFC system for intelligent housing district is for the user of small business, and intranet inserts the hfc net by hub or the shared cm of multi-layer switches, and to reduce cost of access, at this moment LAN subscriber is shared the up-downgoing transmission bandwidth.
3. this communication HFC system for intelligent housing district is to the large-scale group user in the sub-district, can adopt the access via telephone line of local area network (LAN) high speed, she regards the extension of bandwidth ip metropolitan area network as this mode card, by 100m or 1000m ethernet port enterprises lan is connected to the multi-layer switches of cell management control centre, realizes the high speed access of group user and wide-band-message net.
4. the present invention makes up one of main mode of intelligent housing district communication network platform, be widely used in the construction of intelligent dwelling sub-district, on this communication network platform, realize the broadband access of Based Intelligent Control, sub-district integrated information service and the internet of sub-district, thereby realized the information-based and intelligent of residential quarters.
5. the present invention is a kind of advance that has, autgmentability, the communication HFC system for intelligent housing district of high performance-price ratio.
Embodiment
The invention will be further described below by specific embodiment, and following examples are descriptive, is not determinate, can not limit protection scope of the present invention with this.
This communication HFC system for intelligent housing district, wherein this system comprises: the CMTS of front end, the cable modem and the transmission equipment that are positioned at user side are formed, user side pc directly connects cm by 10-100base-t self adaptation Ethernet interface, realizes that the bandwidth of the descending 36mbps transmission rate of up 10mbps inserts.This user side pc also can insert the HFC net by hub or the shared cm of multi-layer switches.This user side pc also can pass through the access via telephone line of local area network (LAN) high speed.Present embodiment adopts first kind of mode to insert, and the Frame that this CMTS accepts from network is encapsulated in the MPEG-2TS frame, becomes the RF signal to output to the HFC net by descending digital modulation, accepts upstream data simultaneously, and the frame that converts Ethernet to sends network to.The basic training what one is particularly good at of the CM of user side is modulated into the PF signal with upstream digital information, and descending PF signal is demodulated into digital signal, the certificate of from MPEG-2 TS frame, isolating, and the frame that converts Ethernet to sends network to.
Claims (4)
1. communication HFC system for intelligent housing district, it is characterized in that: this system comprises: the CMTS of front end, the cable modem and the transmission equipment that are positioned at user side are formed, the Frame that this CMTS accepts from network is encapsulated in the MPEG-2TS frame, become the RF signal to output to the HFC net by descending digital modulation, accept upstream data simultaneously, and the frame that converts Ethernet to sends network to.The basic training what one is particularly good at of the CM of user side is modulated into the PF signal with upstream digital information, and descending PF signal is demodulated into digital signal, the certificate of from the MPEG-2TS frame, isolating, and the frame that converts Ethernet to sends network to.
2. communication HFC system for intelligent housing district according to claim 1 is characterized in that: user side pc directly connects cm by 10-100base-t self adaptation Ethernet interface, realizes that the bandwidth of the descending 36mbps transmission rate of up 10mbps inserts.
3. communication HFC system for intelligent housing district according to claim 1 is characterized in that: user side pc inserts the HFC net by hub or the shared cm of multi-layer switches.
4. communication HFC system for intelligent housing district according to claim 1 is characterized in that: user side pc is by the access via telephone line of local area network (LAN) high speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101509112A CN101459834A (en) | 2007-12-11 | 2007-12-11 | Communication HFC system for intelligent housing district |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101509112A CN101459834A (en) | 2007-12-11 | 2007-12-11 | Communication HFC system for intelligent housing district |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101459834A true CN101459834A (en) | 2009-06-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101509112A Pending CN101459834A (en) | 2007-12-11 | 2007-12-11 | Communication HFC system for intelligent housing district |
Country Status (1)
| Country | Link |
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| CN (1) | CN101459834A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102035704A (en) * | 2010-12-27 | 2011-04-27 | 甘静 | Wideband access system based on HFC (Hybrid Fiber Coaxial) network |
| CN105187681A (en) * | 2015-09-15 | 2015-12-23 | 广东九联科技股份有限公司 | Method for realizing rapid on-line operation of cable modem |
| CN107692635A (en) * | 2017-09-19 | 2018-02-16 | 中源家居股份有限公司 | A kind of touch integration of three networks multimedia couch |
-
2007
- 2007-12-11 CN CNA2007101509112A patent/CN101459834A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102035704A (en) * | 2010-12-27 | 2011-04-27 | 甘静 | Wideband access system based on HFC (Hybrid Fiber Coaxial) network |
| CN102035704B (en) * | 2010-12-27 | 2012-07-11 | 甘静 | Wideband access system based on HFC (Hybrid Fiber Coaxial) network |
| CN105187681A (en) * | 2015-09-15 | 2015-12-23 | 广东九联科技股份有限公司 | Method for realizing rapid on-line operation of cable modem |
| CN105187681B (en) * | 2015-09-15 | 2019-01-11 | 广东九联科技股份有限公司 | A kind of method of Cable Modem Quick thread |
| CN107692635A (en) * | 2017-09-19 | 2018-02-16 | 中源家居股份有限公司 | A kind of touch integration of three networks multimedia couch |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090617 |