CN1458796A - Wired TV HFC broadband network radio frequency (RF) signal route management system - Google Patents
Wired TV HFC broadband network radio frequency (RF) signal route management system Download PDFInfo
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Abstract
A cable TV HFC broadband network RF signal route management system includes a front network management device, a RF signal route exchanger and internal management software, the front end management device and RF signal route exchanger are connected with each other by optical fibre or coaxial cable connected to the Rf signal route exchanger. Advantages are using the method of combining centralized management for computer front end and independent execution for network transmit unit, realizing the overall management of HFC broadband network Rf signal transmit route, solving the difficult problems of contraction between the isolation of cable TV network fault and the quality of service and the untimely prepairing of fault, and providing the for ceful technical support for the safety management of signal transmission link and the raise service quality.
Description
Technical field
The present invention relates to cable TV HFC network management technology field, specifically a kind of cable TV HFC broadband network radio frequency (RF) signal route management system.
Background technology
The operation management person of cable TV HFC network is perplexed in cable TV HFC network fast development, but network management seriously lags behind, the particularly service quality of cable TV HFC network, information security and Fault Isolation and recovery problem for a long time.
At present, the cable TV HFC network network topology structures that adopt ring-like+star-like+tree type-branch more.Wherein, ring-like and hub-and-spoke configuration is used for optical networking more, constitutes the trunk portion of hfc plant.Tree type-branched structure then is the main network configuration that traditional cable TV HFC net standard coaxial cable network is adopted, and constitutes the distribution part of hfc plant.
The trunk portion of hfc plant, promptly the optical fiber ring network can possess the ability of Route Selection, makes between front end and front end, between sub-headend and front end and can establish a communications link between sub-headend and sub-headend.Optical node will be converted to radio frequency (RF) signal of telecommunication from the light signal of sub-headend for coaxial cable transmission and distribution system; Can be that light signal is through the trunk portion of Optical Fiber Transmission to hfc plant also with RF electrical signal conversion from coaxial cable transmission and distribution system.Coaxial cable transmission and distribution system will be sent to network user terminals from the information of front end and/or sub-headend, and configurable amplifier is to remedy the decay of coaxial cable to the RF signal of telecommunication in coaxial cable transmission and the distribution system.
Because the cable TV HFC network is the network that grows up on the cable system of CATV, its coaxial cable transmission and distribution portion are still continued to use the tree-like branching networks structure that original CATV one-way broadcast systems is adopted, and, for network institute information transmitted, present network still is that folk prescription is to transmission.Even those finished bidirectional rebuilding (that is: will transmit and distribute links in unidirectional amplifier be replaced into two-way amplifier) coaxial cable transmission and distribution system in, if do not set up the routing mechanism of RF signal, the specifying information that network transmitted also is that folk prescription on the physical orientation is to transmission on transmission of present coaxial cable and distribution network.And network also can't be avoided occurring because of a certain link failure and/or node failure cause the phenomenon that a group or array user for a long time can't access networks.
Summary of the invention
The purpose of this invention is to provide a kind of can on the cable TV HFC network, the selection RF signal transmission route by front-end network management equipment, realize cable TV HFC network quasi real time Fault Isolation and fault recovery function, effectively prevent cable TV HFC broadband network radio frequency (RF) signal route management system that phenomenon that a certain link failure and/or node failure caused one group or the array user that cause because of artificial destruction or equipment fault for a long time can't access network takes place.
The said cable TV HFC broadband network of the present invention radio frequency (RF) signal route management system comprises front-end network management equipment, RF signal routing switch and built-in management software.Be connected by optical fiber or coaxial cable between front-end network management equipment and the RF signal routing switch, as shown in Figure 1, connect by coaxial cable between each RF signal routing switch, as shown in Figure 2.
Front-end network management equipment communicates shown in figure three by fsk data modulator/demodulator and RF signal routing switch.RF signal routing switch realizes that by the instruction and data that fsk demodulator and single-chip microcomputer receiving front-end network management device pass down inner Data Update, rule/route control logic change and software upgrading; RF signal routing switch single-chip microcomputer detects information uploading to the information of self and route switching information and other to front-end network management equipment by the fsk data modulator.
Intelligentized RF signal routing switch comprises fsk data modulator/demodulator A1, CPU and peripheral interface circuit A2, RF process of signal transmission circuit (straight-through/amplification/branch/distribution) A3, gate-controlled switch circuit A4, end interface circuit 1 (A5), by main output, end interface circuit 2 (A6), see Fig. 1.Wherein A1, A2 are universal circuits.Gate-controlled switch circuit A4 can by PIN diode and Associativeoffsets circuit or by high frequency relay or the two in conjunction with the switch arrays of forming, its control signal is from A2.End interface circuit 1 has two ports, can be defined as primary physical input (being called for short the primary input end down) and spare physical input (be called for short down and be equipped with input) respectively.End interface circuit 2 has two with upper port, can be defined as primary physical output (being called for short main output down), spare physical output (be called for short down and be equipped with output) and a physics output (being called for short an output down) 1,2,3... respectively.Gate-controlled switch circuit A4 has the individual port of N (〉=6), one of them links to each other with the primary input end, one be equipped with input and link to each other, one links to each other with main output, one be equipped with output and link to each other, in the remaining port two short circuits mutually, all the other can leave unused, and this moment, RF handshaking device did not have transmission process functions such as the amplification of RF signal, distribution or branch; When possessing transmission process functions such as the amplification of RF signal, distribution, branch when needs RF handshaking device, link to each other with the input of RF process of signal transmission parts or equipment such as amplifying circuit (device), distributor circuit (device) and branch circuit (device) one of in the remaining port, each output of RF process of signal transmission parts or equipment links to each other with all the other ports.The control signal of gate-controlled switch circuit A4 is produced through the drive part of peripheral interface circuit according to front-end network management device directive or predefined control logic by the management software that embeds among the A2.Like this, the RF signal that enters RF signal routing switch by arbitrary port of RF signal routing switch can have been set up RF signal route switching choice mechanism in view of the above from other one or several port output.
1. as shown in Figure 3: the square frame of both sides is the gate-controlled switch parts among the figure.These gate-controlled switch parts can be considered the matrix switch device, have N+2 bar longitudinal circuit and 3 transverse circuits.Wherein N+2 (〉=6) is a gate-controlled switch component port number.1 transverse circuit of input element and gate-controlled switch parts of RF transmission equipment (straight-through/amplification/branch/distribution) is contacted mutually.Connecting and disconnecting by control gate-controlled switch parts longitudinal circuit and transverse circuit crosspoint can realize the space switching of RF signal, thereby set up RF signal routing mechanism.
Generally speaking, the RF signal by RF signal routing switch primary input end (coming " from link A " among Fig. 3) needs the link (link 1 is to link N among Fig. 3) through linking to each other with all outputs of RF signal routing switch to forward.At this moment, control the through and off in the horizontal and vertical circuit crosspoint of gate-controlled switch parts as shown in Figure 4, that is: longitudinal circuit primary input and transverse circuit 2 crosspoints are connected, longitudinal circuit master output, an output 1 to the crosspoint of an output N-1 and transverse circuit 2 are connected, coming from fully, the RF signal of input (among the figure three " from link A ") passes through transverse circuit 2, after RF transmission (amplification/branch/distribution) device processes, deliver to each output port, can realize the Route Selection of RF signal as shown in Figure 5.
2. the through and off as shown in Figure 6 in the horizontal and vertical circuit crosspoint of control gate-controlled switch parts, that is: longitudinal circuit is equipped with input and the connection of transverse circuit 2 crosspoints, longitudinal circuit master output, an output 1 to the crosspoint of an output N-1 and transverse circuit 2 are connected, coming from fully, the RF signal of input (among Fig. 6 " from link B ") passes through transverse circuit 2, after RF transmission (amplifications/branch/distribution) device processes, deliver to each output port, can realize that as shown in Figure 7 employing is equipped with the topological flow process of RF signal of input port.
3. route backup mechanism:, formed route backup mechanism at output by selection to route.
The through and off as shown in Figure 8 in the horizontal and vertical circuit crosspoint of control gate-controlled switch parts, that is: longitudinal circuit primary input and transverse circuit 2 crosspoints are connected, longitudinal circuit master output, an output 2 to the crosspoint of an output N-1 and transverse circuit 2 are connected, and an output 1 is defined as output fully.The RF signal that comes from primary input end (among Fig. 8 " from link A ") is by transverse circuit 2, after RF transmission (amplifications/branch/distributions) device processes, deliver to except that be equipped with import each output port, can realize that as shown in Figure 9 employing is equipped with the topological flow process of RF signal of input port.In like manner can select other output port as the back-up output port, form route backup mechanism at output thus.
4. by selection, input and output can be inverted, realize the reverse transfer on the physical orientation route.
The horizontal and vertical circuit crosspoint through and off as shown in figure 10 of control gate-controlled switch parts, that is: longitudinal circuit primary input and transverse circuit 3 crosspoints are connected, longitudinal circuit is equipped with input and connects with transverse circuit 1, transverse circuit 2 crosspoints, longitudinal circuit master output is connected with the crosspoint of transverse circuit 1, longitudinal circuit props up output 1 and connects to the crosspoint of an output N-1 and transverse circuit 2, and longitudinal circuit props up output 1 and connects with the crosspoint of transverse circuit 3.The RF signal that comes from main output (among Figure 10 " from link 1 ") is delivered to longitudinal circuit input fully by transverse circuit 1, be equipped with input through longitudinal circuit again and deliver to transverse circuit 2 with the crosspoint of transverse circuit 2, after RF transmission (amplification/branch/distribution) device processes, deliver to each output port, and prop up output 1 through longitudinal circuit and deliver to transverse circuit 3 with the crosspoint of transverse circuit 3, deliver to the primary input end through the crosspoint of longitudinal circuit primary input and transverse circuit 3 again, can realize that primary input end and main output are inverted, it is the output port that the primary input end becomes the RF signal, and main output becomes the input port of RF signal, thereby realizes RF signal topology flow process as shown in figure 11.
5. by selection, the primary input end can be converted to the RF signal output part to route.The horizontal and vertical circuit crosspoint through and off as shown in figure 12 of control gate-controlled switch parts, that is: longitudinal circuit primary input and transverse circuit 3 crosspoints are connected, longitudinal circuit is equipped with input and connects with transverse circuit 2 crosspoints, longitudinal circuit master output, an output 1 are connected to the crosspoint of an output N-1 and transverse circuit 2, and longitudinal circuit props up output 1 and connects with the crosspoint of transverse circuit 3.Come from the RF signal that is equipped with input (among Figure 12 " from link B ") and deliver to transverse circuit 2 by the crosspoint that longitudinal circuit is equipped with input and transverse circuit 2, after RF transmission (amplification/branch/distribution) device processes, deliver to each output port, and prop up output 1 through longitudinal circuit and deliver to transverse circuit 3 with the crosspoint of transverse circuit 3, deliver to the primary input end through the crosspoint of longitudinal circuit primary input and transverse circuit 3 again, the primary input end can be converted to the RF signal output part, the RF signal (among Figure 12 " from link B ") of providing input port in the future for oneself is forwarded to the link (the link A among Figure 12) that links to each other with the primary input end.Thereby realize RF signal topology flow process as shown in figure 13.
On the basis of the RF signal route switching that above-mentioned RF signal routing switch can be realized, also can make up the network management proxy device that possesses RF signal routing and switching function and link and/or equipment state measuring ability by increasing link and/or equipment state testing circuit in RF signal routing switch.
Utilize the original RF signal transmission resource of network and and the resource of using the network management proxy device possess RF signal routing and switching function, link and/or equipment state measuring ability and RF signal transmission enlarging function to increase, can on original hfc plant, form an independently two-way link, realize the network of management legacy network.
RF signal routing switch is realized RF handshaking and routing function by software.Can preserve the default route selection scheme in the RF signal routing switch, also can be by front-end network management Equipment Control RF signal transmission route.
Front-end network management equipment is kept in touch by the RF signal routing switch in FSK modulator-demodulator and the network transmission link, when occurring such as incidents such as link failure and/or node failure, network operation, the network rebuildings, position that the relevant RF signal routing switch incident of front-end network management equipment notice occurs and indication change route planning, finish the route switching of RF signal by relevant RF signal routing switch, carry out Fault Isolation and fault recovery in time, effectively, make fault or maintenance activity be reduced to minimum the negative effect that the network service produces.
The advantage of cable TV HFC broadband network radio frequency of the present invention (RF) signal route management system is: adopt the centralized management of computer front end independently to carry out the method that combines with the Network Transmission unit, realized comprehensive management to HFC broadband network radio frequency (RF) signal transmission route, having solved the Wired TV network fault isolation contradicts with service quality, the difficult problem that fault recovery is untimely, and, cable TV HFC Network Management technical merit and network resource utilization have greatly been improved for the safety management and the raising network service quality of cable TV network signal transmission link provides strong technical support.
Description of drawings
Fig. 1 is the detection block diagram between front-end network management equipment and the RF signal routing switch that includes RF process of signal transmission (straight-through/amplification/branch/distribution) function;
Fig. 2 is the detection block diagram between the RF signal routing switch that includes RF process of signal transmission (straight-through/amplification/branch/distribution) function;
Fig. 3 is the logic mechanism figure of RF signal routing switch;
Fig. 4 is the logic mechanism figure that RF signal routing switch is carried out RF process of signal transmission (straight-through/amplification/branch/distribution) functions of the equipments;
Fig. 5 is the RF signal topology schematic flow sheet corresponding to logic mechanism shown in Figure 4;
Fig. 6 is the logic mechanism figure of RF signal routing switch physics input RF signal route back-up function;
Fig. 7 is the RF signal topology schematic flow sheet corresponding to logic mechanism shown in Figure 6;
Fig. 8 is the logic mechanism figure of RF signal routing switch physics output RF signal route back-up function;
Fig. 9 is the RF signal topology schematic flow sheet corresponding to logic mechanism shown in Figure 8;
Figure 10 realizes the logic mechanism figure that physics input and physics output are inverted for RF signal routing switch;
Figure 11 is the RF signal topology schematic flow sheet corresponding to logic mechanism shown in Figure 10;
Figure 12 realizes the physics input is converted into the logic mechanism figure of RF signal output part for RF signal routing switch;
Figure 13 is the RF signal topology schematic flow sheet corresponding to logic mechanism shown in Figure 12;
Figure 14 is the RF signal transmission amplifier schematic diagram that possesses RF signal routing and switching function;
Figure 15～Figure 17 is cable TV HFC broadband network radio frequency (RF) signal route management system embodiment schematic diagram;
Figure 18 is the RF signal routing switch schematic diagram that possesses RF signal transmission distribution function;
Embodiment
Embodiment 1:
On the basis of the RF signal route switching that RF signal routing switch can be realized, also can be by increasing link and/or equipment state testing circuit in RF signal routing switch, structure possesses the network management proxy device of RF signal routing and switching function and link and/or equipment state measuring ability, and with its cross-over connection (parallel connection) at former wired TV hfc plant RF transmission equipment (amplification/branch/distribution) two ends, form unique managerial structure, do not influence the original RF signal transmission of cable TV HFC network (amplification/branch/distribution) function.
As shown in figure 14, the network management proxy device that possesses RF signal routing and switching function and link and/or equipment state measuring ability is by coupling part (channel-splitting filter, branch or distributor circuit etc.), signal modulating/demodulating part and part of data acquisition, management information and signal processing, RF supervisory signal and broadcast singal Route Selection processing section reach by K switch 1, K2, and the common gate-controlled switch parts of forming of Kn and management information exchange matrix are formed.Network management proxy device and RF transmission multiplying arrangement (RF signal amplification circuit among Figure 14) two ends are in parallel.Like this, can greatly strengthen the manageability energy of network keeping setting up the routing and switching function of RF signal on the network RF signal transfer functions basis.
When the RF signal that will be entered by the primary input end at needs is sent by main output after processing and amplifying, management information and signal processing unit produce gate-controlled switch component controls logic and drive the gate-controlled switch parts according to rule does following action: contacting in the K switch contact, 1 lower-left and the right side, K switch 3, K4 ... contacting in the contact, lower-left of Kn-1 and the right side, contacting in the contact, K switch n lower-left and the right side makes from the RF signal of RF signal amplification circuit and finishes ground connection after the impedance matching; The RF signaling switch K1 and the channel-splitting filter passage that are entered by the primary input end enter the RF signal amplification circuit, amplify after K switch 3 is delivered to main output.Each output is ground connection after K switch 4～Kn-1 finishes impedance matching, no signal output.In like manner can by Route Selection make the RF signal that enters by the primary input end through processing and amplifying after other output port or all of the port output realize output route back-up function thus.
Needs will by be equipped with RF signal that input enters after processing and amplifying by main output and when being equipped with output and sending, management information and signal processing unit produce gate-controlled switch component controls logic and drive the gate-controlled switch parts according to rule does following action: contacting in the K switch 1 upper left contact and the right side, contacting in the K switch 4 upper left contacts and the right side, K switch 3, K5 ... contacting in the contact, lower-left of Kn-1 and the right side, contacting in the contact, K switch n lower-left and the right side makes from the RF signal of RF signal amplification circuit and finishes ground connection after the impedance matching; The RF signaling switch K1 and the channel-splitting filter passage that are entered by input enter the RF signal amplification circuit, amplify after K switch 3 is delivered to main output, deliver to output fully through K switch 4.All the other each outputs ground connection after K switch 5～Kn-1 finishes impedance matching, no signal output.Realized input route back-up function thus.
Will be when being equipped with RF signal that input enters and after processing and amplifying, sending at needs by primary input and active and standby output and other output, management information and signal processing unit produce gate-controlled switch component controls logic and drive the gate-controlled switch parts according to rule does following action: contacting in the K switch 1 upper left contact and the right side, K switch 3, K4, K5 ... contacting in the upper left contact of Kn-1, Kn and the right side; Enter the RF signal amplification circuit by being equipped with RF signaling switch K1 and the channel-splitting filter passage that input enters, amplify after K switch 3, K4, K5 ... Kn-1 delivers to active and standby and other output, and deliver to the primary input end through Kn, realized the function of the exportable RF radiofrequency signal after processing and amplifying of primary input end.
The RF signal that will enter by main output at needs after processing and amplifying by primary input, when being equipped with output and other output and sending, management information and signal processing unit produce gate-controlled switch component controls logic and drive the gate-controlled switch parts according to rule does following action: contacting in the K switch 1 upper left contact and the right side, contacting in the K switch 3 upper left contacts and the right side, K4, K5 ... contacting in the upper left contact of Kn-1, Kn and the right side; The RF signal that is entered by main output enters the RF signal amplification circuit through K switch 3, K1 and channel-splitting filter passage, amplify after K switch 4, K5 ... Kn-1 delivers to and is equipped with output and other output, and deliver to the primary input end through Kn and export, realize being inverted of input and output.
Collection among Figure 14 and holding circuit can and be delivered to signal processing unit for processing, analysis, detected transmission working state of system with transmission link and/or equipment work information extraction.Analysis result can upload to front-end network management equipment through FSK modulation circuit, K switch 2 and channel-splitting filter.
Embodiment 2:
With cable TV HFC broadband network radio frequency (RF) signal route management system, the RF transmission equipment (as the A3 among Figure 15, B3, C3) that transmission main line or the adjacent trunk portion of branch line is had RF signal routing and switching function apart from nearest aforementioned of network terminal use network with coaxial cable through separately be equipped with input port and an output port phase cascade as (link LAB among Figure 15 and link LBC), and selection by route, in the HFC broadband cable network, can form the ring network that possesses " self-healing " function.
When a certain link failure and/or node failure take place for the transmission of wired TV hfc plant coaxial cable and distribution system, disconnect as link LA2 among Figure 16, at this moment, as shown in figure 16, reinstate the output fully of the RF amplifier B3 with RF signal routing and switching function by Route Selection, to after processing and amplifying, deliver to link LAB from the RF signal of link LB3, utilize feature 4 that the primary input end of RF transmission equipment amplifier A3 is converted to the RF signal output part and will deliver to link LA3 and link LA4 from the RF signal of link LAB, utilize feature 3 that primary input end and the main output of RF transmission equipment amplifier A2 are inverted, to after being forwarded to link LA21 after the processing and amplifying, transfer to network terminal user network from the RF signal of link LA3, make network realize RF signal transfer functions illustrated in Figure 17, promptly realize " self-healing " function.This shows, utilize aforementioned feature 1, feature 2, feature 3, feature 4 and feature 5, and combine, can realize possessing cable TV HFC network the whole network ring network of " self-healing " function with the routing function of optical networking part.Embodiment 3:
Utilize the original resource of cable TV HFC broadband network, possesses the network management proxy device cross-over connection (parallel connection) of RF signal routing and switching function and link and/or equipment state measuring ability at former wired TV hfc plant RF transmission equipment (amplification/branch/distribution) two ends with aforementioned, and with front-end network management equipment and related software collaborative work, can be on legacy network, formed an independently two-way link, realize the network of management legacy network, seen Figure 18.
Among Figure 18, be connected across the aforementioned network administration agent device, CATV hub at former wired TV hfc plant RF transmission equipment (amplification/branch/distribution) two ends and constitute an independently two-way link management by the front-end network management equipment that webmaster front end and fsk data modulating/demodulating are formed.Using to the original RF transmission equipment of network of the network management proxy device of the aforementioned RF of possessing signal routing and switching function provides route back-up and selection function.All RF transmission equipments (comprising amplifier, splitter and distributor) among Figure 18 but network management proxy devices of the aforementioned RF of the possessing signal of cross-over connection routing and switching function all realizes that each transmission branch distribution node of the whole network all can realize the route switching of RF signal.But in the process of the aforementioned cable TV HFC broadband network of practical application radio frequency (RF) signal route management system, can realize cable TV HFC broadband network radio frequency (RF) SRM signaling route management step by step, but perfect cable TV HFC broadband network management function gradually.
In addition, front end management software constitutes a distributed management system with the management software that embeds in the RF transmission/distributing equipment, and the management of route can be finished by the management software in the equipment, also can be provided with by front end management software.So just allow the network management network operator as required, dispose flexibly and efficiently and realize network radio frequency (RF) SRM signaling route management strategy, make full use of Internet resources to reach, improve service quality, improve managerial skills, strengthen the network anti-attack ability, to obtain very big management benefit.
Claims (10)
1, a kind of cable TV HFC broadband network radio frequency (RF) signal route management system, comprise front-end network management equipment, RF signal routing switch and built-in management software, be connected by optical fiber or coaxial cable between front-end network management equipment and the RF signal routing switch, connect by coaxial cable between each RF signal routing switch.
2, cable TV HFC broadband network radio frequency according to claim 1 (RF) signal route management system is characterized in that: RF signal routing switch comprises fsk data modulator/demodulator A1, CPU and peripheral interface circuit A2, RF process of signal transmission circuit (straight-through/amplifications/branch/distributions) A3, gate-controlled switch circuit A4, by the primary input end and be equipped with input end interface circuit A5 that input forms, by main output, output and prop up the output interface circuit A6 that output is formed fully.
3, according to claim 1 and 2 described cable TV HFC broadband network radio frequency (RF) signal route management systems, it is characterized in that: gate-controlled switch circuit A4 can be by PIN diode and Associativeoffsets circuit or by high frequency relay or the two is in conjunction with the switch arrays of forming, gate-controlled switch circuit A4 has the individual port of N (〉=6), one of them links to each other with the primary input end, one be equipped with input and link to each other, one links to each other with main output, one be equipped with output and link to each other, in the remaining port two short circuits mutually, all the other can leave unused, and this moment, RF handshaking device did not have the amplification of RF signal, transmission process functions such as distribution or branch; When possessing transmission process functions such as the amplification of RF signal, distribution, branch when needs RF handshaking device, link to each other with the input of RF process of signal transmission parts or equipment such as amplifying circuit (device), distributor circuit (device) and branch circuit (device) one of in the remaining port, each output of RF process of signal transmission parts or equipment links to each other with all the other ports; The control signal of gate-controlled switch circuit A4 is produced through the drive part of peripheral interface circuit according to front-end network management device directive or predefined control logic by the management software that embeds among the A2, like this, entering the RF signal of RF signal routing switch by arbitrary I/O end of RF signal routing switch can be from other one or several port output.
4, according to claim 1 and 2 described cable TV HFC broadband network radio frequency (RF) signal route management systems, it is characterized in that: but aforementioned RF signal routing switch cross-over connection (parallel connection) is in RF process of signal transmission parts or equipment such as amplifying circuit (device), distributor circuit (device) and branch circuit (device) two ends, constitute RF process of signal transmission equipment with RF signal routing and switching function, and being electrically connected with physical connection of cable TV RF transmission equipment (amplification/branch/distribution) separated, physical connection by the control input/output end port, realization improves the security performance of network to the management of apparatus for network node (amplification/branch/distribution) redundancy port RF signal.
5, cable TV HFC broadband network radio frequency according to claim 4 (RF) signal route management system, it is characterized in that: the RF process of signal transmission equipment of the aforementioned RF of having signal routing and switching function, formed route backup at its input and output, that is: the RF signal of required transmission process (amplification/distribution/branch) can or be equipped with input from the primary input end and send into transmission process (amplification/distribution/branch) circuit, after transmission process, can be from main output, output and the output of other output fully; By selection, the primary input end of the RF process of signal transmission equipment of the aforementioned RF of having signal routing and switching function can be converted to the RF signal output part to route.
6, according to claim 4 and 5 described cable TV HFC broadband network radio frequency (RF) signal route management systems, it is characterized in that: by selection route, the input and the output of the RF process of signal transmission equipment of the aforementioned RF of having signal routing and switching function can be inverted, realize the reverse transfer on the physical orientation, that is: the RF signal of required transmission process (amplification/distribution/branch) can be sent into transmission processing apparatus from the arbitrary output of RF process of signal transmission equipment and carry out being exported by a certain input of transmission processing apparatus after the transmission process.
7, according to claim 4 and 5 described cable TV HFC broadband network radio frequency (RF) signal route management systems, it is characterized in that:, the primary input end of the RF process of signal transmission equipment of the aforementioned RF of having signal routing and switching function can be converted to the RF signal output part by selection to route.
8, according to claim 1,6 and 7 described cable TV HFC broadband network radio frequency (RF) signal route management systems, it is characterized in that: the RF transmission equipment (amplification/branch/distribution) of the aforementioned RF of the having signal routing and switching function that available coaxial cable is nearest apart from network terminal use network with transmission main line or the adjacent trunk portion of branch line through separately be equipped with an input port and an output port phase cascade, and selection by route, in the HFC broadband cable network, can form the ring network that possesses " self-healing " function.
9, cable TV HFC broadband network radio frequency according to claim 1 (RF) signal route management system, it is characterized in that: aforementioned RF signal routing switch cross-over connection (parallel connection) is at the two ends of the original RF transmission equipment of cable TV HFC broadband network, form unique managerial structure, do not influence the original transmission and the distribution function of cable TV HFC broadband network, the resource of utilizing original resource of cable TV HFC broadband network and above-mentioned feature to increase, on legacy network, form an independently two-way link, realized the network of management legacy network.
10, cable TV HFC broadband network radio frequency according to claim 1 (RF) signal route management system, it is characterized in that: front end management software with embed aforementioned RF signal routing switch, have the RF process of signal transmission equipment of RF signal routing and switching function and the management software that possesses in the RF signal route management system parts of RF signal transmission link status detection function constitutes a distributed management system, the management of route can be finished by the management software in the embedding equipment, also can be provided with by front end management software.
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| CN100388789C (en) * | 2004-02-12 | 2008-05-14 | 韩国电子通信研究院 | System and method for providing integrated communications and broadcasting service |
| CN104363114A (en) * | 2014-10-30 | 2015-02-18 | 成都康特电子高新科技有限责任公司 | HFC (high-frequency current) network management system front-end controller based on broadcast television network |
| CN104363525A (en) * | 2014-10-30 | 2015-02-18 | 成都康特电子高新科技有限责任公司 | Addressable HFC (high-frequency current) network management system front-end controller based on broadcast television network |
| CN104468188A (en) * | 2014-10-30 | 2015-03-25 | 成都康特电子高新科技有限责任公司 | HFC network management system front end control mechanism allowing data receiving and transmitting to be easily judged |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100388789C (en) * | 2004-02-12 | 2008-05-14 | 韩国电子通信研究院 | System and method for providing integrated communications and broadcasting service |
| CN104363114A (en) * | 2014-10-30 | 2015-02-18 | 成都康特电子高新科技有限责任公司 | HFC (high-frequency current) network management system front-end controller based on broadcast television network |
| CN104363525A (en) * | 2014-10-30 | 2015-02-18 | 成都康特电子高新科技有限责任公司 | Addressable HFC (high-frequency current) network management system front-end controller based on broadcast television network |
| CN104468188A (en) * | 2014-10-30 | 2015-03-25 | 成都康特电子高新科技有限责任公司 | HFC network management system front end control mechanism allowing data receiving and transmitting to be easily judged |
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