CN103269281A - QAM device standby system and method - Google Patents
QAM device standby system and method Download PDFInfo
- Publication number
- CN103269281A CN103269281A CN2013101452444A CN201310145244A CN103269281A CN 103269281 A CN103269281 A CN 103269281A CN 2013101452444 A CN2013101452444 A CN 2013101452444A CN 201310145244 A CN201310145244 A CN 201310145244A CN 103269281 A CN103269281 A CN 103269281A
- Authority
- CN
- China
- Prior art keywords
- qam
- equipment
- module
- main control
- mixing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Transmitters (AREA)
Abstract
The invention provides a QAM device system which comprises a first QAM device, a second QAM device, a first frequency mixing device, a second frequency mixing device and an RF switcher, wherein the second QAM device is matched with the first QAM device for use, the first frequency mixing device is connected with the first QAM device, the second frequency mixing device is connected with the second QAM device, and the RF switcher is respectively connected with the first frequency mixing device and the second frequency mixing device. According to the QAM device system, heartbeat detection can be mutually carried out between the first QAM device and the second QAM device, when an opposite-end device is in fault, standby switching of a local-end device is prevented, and when the opposite-end device is normal and the local-end device is in fault, service is switched to the opposite-end device. Therefore, stability of the QAM device system is improved, and the QAM device system can continuously offer service.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of system and method for QAM device backup.
Background technology
Quadrature amplitude modulation (Quadrature amplitude modulation is called for short QAM) equipment is used for fields such as Digital Television BTV, video request program VOD.General, QAM equipment is by Internet protocol (Internet Protocol, be called for short IP) interface or Asynchronous Serial Interface (Asynchronous Serial Interface, be called for short ASI) receive and transmit (Transport Stream, be called for short TS) code stream, be to send in Hybrid Fiber Coax (Hybrid fiber-coaxial the is called for short HFC) network behind radio frequency (Radio Frequency, the be called for short RF) signal with carrying out the QAM modulation conversion behind the TS code stream multiplex.
Raising along with the QAM device integration, the frequency that the RF port that separate unit multichannel QAM equipment is supported and single RF port are supported is more and more, realize tens single-frequency point QAM of BTV service needed equipment in the past, use new multichannel QAM equipment now, just can support all BTV business for one.
And Digital Television BTV business is a kind of broadcasted application, very high to reliability requirement, and service outage duration is had strict demand.Tradition single channel QAM equipment fault only influences a frequency, and coverage is less, if but adopt multichannel QAM, because all BTV service set are on a multichannel QAM equipment, if the single device fault can cause a large number of services to interrupt.
Summary of the invention
In view of this, be necessary to provide a kind of QAM device systems in fact, provide stable professional ability to guarantee QAM equipment.
First aspect provides a kind of QAM device systems, and this system comprises: a QAM equipment and the 2nd QAM equipment that is used with a described QAM equipment; The first mixing equipment that links to each other with a described QAM equipment and the second mixing equipment that links to each other with described the 2nd QAM equipment separately; And, the RF switch that links to each other with the described first and second mixing equipment respectively; Wherein, the described first and second QAM equipment are worked simultaneously, be used for to the transport stream of input carry out multiplexing and the QAM modulation after, send radiofrequency signal to the described first and second mixing equipment separately respectively; The described first and second mixing equipment send to described RF switch after the radiofrequency signal of input is carried out Frequency mixing processing, and described RF switch selects one tunnel radiofrequency signal to send into the hybrid fiber coax hfc plant arbitrarily.
In first execution mode in conjunction with first invention, a described QAM equipment and described the 2nd QAM equipment regularly carry out heartbeat detection mutually, when detecting opposite end QAM equipment and be the communication failure of malfunction or the described first and second QAM equipment rooms, forbid that then this QAM equipment backs up handover operation.
In second execution mode in conjunction with first first execution mode of inventing, when the described first or the 2nd QAM Equipment Inspection is normal condition and communicates by letter just often between the two to opposite end QAM equipment, the described first and second QAM equipment detect self working state respectively, when detecting when self having equipment fault, close self prevention at radio-frequency port; Described RF switch is detecting RF signal level through the input after the mixing when unusual, automatically switches to the RF signal of another road QAM equipment input.
In the 3rd execution mode of second execution mode in conjunction with first invention, the described first and second QAM equipment all further comprise: be used for that the TS code stream is handled and the main control module of fault detect with link to each other the QAM module of modulating for QAM with described main control module.
In the 4th execution mode in conjunction with first the 3rd execution mode of inventing, described main control module further comprises: TS code stream processing module is used for the TS code stream of input is encoded and multiplexing process; First backup management module is used for described TS code stream processing module is carried out fault detect, also is used for described main control module is carried out fault detect.
In the 5th execution mode in conjunction with first the 4th execution mode of inventing, described QAM module further comprises: QAM modulation and up-conversion module are used for the code stream of described TS code stream processing module input is carried out QAM modulation and upconversion process; Second backup management module is used for fault detect is carried out in described QAM modulation and up-conversion module, also is used for described QAM module is carried out fault detect, and testing result is reported described first backup management module.
Second aspect provides a kind of QAM device systems, and this system comprises: QAM equipment, the first and second mixing equipment that link to each other with described QAM equipment, the RF switch that links to each other respectively with the described first and second mixing equipment; Wherein, described QAM equipment be used for to the transport stream of input carry out multiplexing and the QAM modulation after, send radiofrequency signal to the described first and second mixing equipment respectively; The described first and second mixing equipment send to described RF switch after the radiofrequency signal of input is carried out Frequency mixing processing, and described RF switch selects one tunnel radiofrequency signal to send into the hybrid fiber coax hfc plant arbitrarily.
In first execution mode in conjunction with second aspect, described QAM equipment further comprises: be used for first and second main control modules of the processing of TS code stream and fault detect, can carry out heartbeat detection mutually between described first and second main control modules; All link to each other with described first and second main control modules respectively, be used for the first and second QAM modules of QAM modulation.
In second execution mode in conjunction with second aspect first execution mode, a described QAM module links to each other with the described first mixing equipment, and described the 2nd QAM module links to each other with the described second mixing equipment.
In the 3rd execution mode in conjunction with second aspect second execution mode, when described first or second main control module detect the opposite end main control module be normal condition and between the two communication just often, described first and second main control modules detect self working state respectively, when detecting when self having equipment fault, close self prevention at radio-frequency port; Described RF switch is detecting RF signal level through the input after the mixing when unusual, automatically switches to the RF signal of another road QAM module output.
In the 4th execution mode in conjunction with second aspect the 3rd execution mode, described QAM equipment further comprises: main control module, for carrying out multiplexing to the TS code stream of importing and described QAM equipment being carried out fault detect; Link to each other respectively with described main control module, be used for QAM and modulate a QAM module and the 2nd QAM module.
The third aspect provides another kind of QAM device systems.This system comprises: QAM equipment, and described QAM equipment comprises: main control module, for carrying out multiplexing to the TS code stream of importing and described QAM equipment being carried out fault detect; Link to each other respectively with described main control module, be used for a QAM module and the 2nd QAM module of QAM modulation; The described first and second QAM modules comprise at least two RF ports; The first and second mixing equipment that link to each other with the described first and second QAM module RF ports, and the RF switch that links to each other with the described first and second mixing equipment.
Fourth aspect provides a kind of backup method of QAM device systems, and this method comprises: a QAM equipment and the 2nd QAM equipment regularly carry out heartbeat detection mutually, send heartbeat detection message to opposite end QAM equipment; Arrive opposite end QAM equipment fault when the described first or the 2nd QAM Equipment Inspection, can't receive that perhaps the heartbeat of opposite end QAM equipment is replied, local terminal QAM equipment then is set forbids the backup switching.
In first execution mode in conjunction with fourth aspect, when the described first or the 2nd QAM Equipment Inspection opposite end QAM equipment is normal, and communication is normal between the two, then detects the local terminal equipment fault.
In second execution mode in conjunction with first execution mode of fourth aspect, if local terminal RF port is then closed in the described first or the 2nd QAM Equipment Inspection local terminal equipment fault.
The backup of embodiment of the invention QAM equipment, make active and standby QAM equipment room can carry out heartbeat detection mutually, when the opposite equip. fault, forbid local terminal device backup switching, normal at opposite equip., during the local terminal equipment fault, switch to opposite equip., improve the stability of QAM system, what make that the QAM system can be continuous provides professional.
Description of drawings
Fig. 1 is the QAM device systems logical construction block diagram according to the present invention's one one exemplary embodiment;
Fig. 2 is the QAM apparatus logic structured flowchart according to the present invention's one one exemplary embodiment;
Fig. 3 is the QAM device systems logical construction block diagram according to another one exemplary embodiment of the present invention;
Fig. 4 is the QAM device systems logical construction block diagram according to the another one exemplary embodiment of the present invention;
Fig. 5 is the QAM device systems logical construction block diagram of another one exemplary embodiment of the present invention;
Fig. 6 is the QAM system backup method schematic flow diagram according to one embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite
Fig. 1 is the QAM device systems logical construction block diagram according to the present invention's one one exemplary embodiment;
As shown in Figure 1, this QAM system comprises: a QAM equipment 101 and the 2nd QAM equipment 102 that is used with a described QAM equipment, the first mixing equipment 103 that links to each other with a QAM equipment 101, with the second mixing equipment 104 that described the 2nd QAM equipment 102 links to each other, this QAM system also comprises respectively the RF switch 105 that links to each other with the second mixing equipment with the first mixing equipment.Wherein, the one QAM equipment 101 and the 2nd QAM equipment 102 are worked simultaneously, be used for to the TS code stream of output encode, multiplexing, demultiplexing etc., and the TS code stream after handling carried out frequency-conversion processing, separately respectively to first and second mixing equipment output radiofrequency signal.The first and second mixing equipment send to RF switch 105 for after the radiofrequency signal of QAM equipment input is carried out Frequency mixing processing.When the first and second QAM equipment simultaneously during operate as normal, RF switches 105 can select the output of one road RF signal arbitrarily, simultaneously, the one QAM equipment and the 2nd QAM equipment regularly carry out heartbeat detection mutually, detecting the other side's operating state, is malfunction or the one the second QAM communication between devices faults when detecting opposite end QAM equipment, when namely heartbeat is undesired, forbid that then this QAM equipment backs up handover operation, prevent two equal cisco unity malfunctions of QAM equipment and cause service disconnection.When detect opposite end QAM equipment be normal condition and heartbeat between the two just often, the first and second QAM equipment detect the operating state of oneself respectively, when detecting when self having equipment fault, close the QAM module RF output of itself.When the level of the RF signal that the RF switch of back level is imported is unusual, automatically switch to the RF signal of another road QAM equipment input after detecting through mixing.
Further, the first and second QAM equipment all further comprise: be used for the main control module of the processing of TS code stream and fault detect and the QAM module that is used for the QAM modulation.
Fig. 2 is the QAM apparatus logic structured flowchart according to the present invention's one one exemplary embodiment.
As shown in Figure 2, this QAM equipment comprises the QAM module 202 that main control module 201 links to each other with this main control module 201.Main control module 201 be used for to the TS code stream of input encode, multiplexing and fault detect etc., after the TS code stream after QAM module 202 is used for main control module 201 handled carries out QAM modulation and upconversion process, the output radiofrequency signal.Main control module 201 further comprises TS code stream processing module 2011 and first backup management module 2012.Described TS code stream processing module 2011 is used for receiving the input of TS code stream, TS code stream to input carries out RS (Reed-solomoncodes) coding, convolutional encoding, processing such as multiplexing grade, first backup management module 2012 is used for main control module 201 and TS code stream processing module 2011 are regularly carried out fault detect, handles according to the troubleshooting strategy.This QAM module 202 further comprises: QAM modulation and up-conversion module 2021, and after being used for code stream to 2011 inputs of TS code stream processing module and carrying out QAM modulation and upconversion process, the output radiofrequency signal; Second backup management module 2022 links to each other with first backup management module 2012, be used for fault detect is regularly carried out in QAM module 202 and QAM modulation and up-conversion module 2021, and will feed back to first backup management module 2012 to the result of QAM module 202 and QAM modulation and 2021 fault detects of up-conversion module; Power module 2023 is used for 202 power supplies of QAM module.
Further, described first backup management module 2012 also be used for to receive the result to QAM module 202 and QAM modulation and 2021 fault detects of up-conversion module that second backup management module 2022 reports, and carries out troubleshooting is carried out in QAM module 202 and QAM modulation and up-conversion module 2021 according to the troubleshooting strategy.
Further, described first backup management module 2012 also is used for carrying out the timing heartbeat detection respectively with standby QAM equipment and handles, initiatively send heartbeat message to standby QAM equipment, receiving standby QAM equipment heartbeat replys, there is not heartbeat to reply if detect standby QAM equipment, perhaps detect standby QAM equipment and be malfunction or during with standby QAM communication between devices fault, forbid that then this QAM equipment backs up handover operation, cause service disconnection to avoid standby QAM equipment fault.
Further, described first backup management module 2012 also is used for carrying out the timing heartbeat detection respectively with second backup management module 2022 and handles, send heartbeat message to second backup management module 2022, the heartbeat that receives second backup management module 2022 is replied, do not send the heartbeat answer if receive second backup management module 2022, then to 202 times electric control of QAM module, also namely to 2023 times electric control of power module.
Further, described second backup management module 2022 also is used for carrying out the timing heartbeat detection respectively with first backup management module 2012 and handles, send heartbeat message to first backup management module 2012, the heartbeat that receives first backup management module 2012 is replied, receiving when replying less than the heartbeat of first backup management module 2012, controlling and closing the radio frequency output of QAM modulation and up-conversion module 2021.
Fig. 3 is the QAM device systems logical construction block diagram according to another one exemplary embodiment of the present invention.
As shown in Figure 3, this QAM device systems comprises QAM equipment 301, the first mixing equipment 302 that links to each other with described QAM equipment and the second mixing equipment 303 respectively, and the RF switch 304 that links to each other with the described first and second mixing equipment.Wherein, described QAM equipment be used for to the transport stream of input carry out multiplexing and the QAM modulation after, send radiofrequency signal to the described first and second mixing equipment respectively; The described first and second mixing equipment send to described RF switch after the radiofrequency signal of input is carried out Frequency mixing processing, and described RF switch selects one tunnel radiofrequency signal to send into the hybrid fiber coax hfc plant arbitrarily.
Further, described QAM equipment 301 comprises main control module 3011, a QAM module 3012 that links to each other with this main control module 3011 and the 2nd QAM module 3013, wherein, main control module 3011 is used for receiving the input of TS code stream, code stream to input carries out processing such as code multiplexing, send to the first and second QAM modules respectively, the described first and second QAM modules send to the first and second mixing equipment that link to each other respectively separately with the first and second QAM modules after separately the code stream after the processing of input being carried out frequency-conversion processing.
Further, this main control module 3011 also is used for the described first and second QAM modules are carried out fault detect, handles according to the troubleshooting strategy.Concrete, handle according to failure strategy and to comprise: if detect the described first or the 2nd QAM module failure, simultaneously, the heartbeat of main control module and this first or the 2nd QAM intermodule is normal, then closes all RF output channels of this QAM module; If the heartbeat of main control module and the first or the 2nd QAM intermodule is undesired, perhaps main control module can't be received the heartbeat answer of the first or the 2nd QAM module, then can descend the electricity operation to this first or the 2nd QAM module; If the main control module fault then descends electricity to operate or close the RF output channel of all QAM modules to all QAM modules.
Fig. 4 is the QAM system logic structure block diagram according to another one exemplary embodiment of the present invention;
As shown in Figure 4, this QAM system comprises: QAM equipment 401, the first mixing equipment 402 that links to each other with this QAM equipment 401 and the second mixing equipment 403, and the RF switch 404 that links to each other with the first and second mixing equipment.Wherein QAM equipment 401 is used for receiving the code stream of input, after code stream carried out code multiplexing, QAM modulation and upconversion process, export RF signal to the first mixing equipment 402 and the second mixing equipment 403 respectively, after the first and second mixing equipment carry out mixing to the RF signal of importing, send into RF switch 404, RF switch 404 is used for the autonomous RF signal of selecting the input of arbitrary road as required, sends into hfc plant.
Further, this QAM equipment 401 comprises first main control module 4011 and second main control module 4012 and the QAM module 4013 and the 2nd QAM module 4014 that link to each other with second main control module 4012 with first main control module 4011 simultaneously separately.4012 of first main control module 4011 and second main control modules can carry out heartbeat detection mutually.
First main control module 4011 and second main control module 4012 can receive the code stream of input respectively, after the code stream of input is handled, input to the first or the 2nd QAM equipment.Further, first main control module 40111 and second main control module 4012 also can be used for detecting the fault of self or opposite end main control module, receive the detection failure of QAM module feedback, handle according to failure strategy.
Concrete, if first main control module 4011 detects second main control module, 4012 faults, perhaps first main control module 4011 can't be received the heartbeat answer of second main control module 4012, then first main control module 4011 is forbidden self backing up handover operation, same, if second main control module 4012 detects first main control module, 4011 faults or can't receive the heartbeat answer of first main control module 4011, then second main control module 4012 is forbidden self backing up handover operation.If first main control module 4011 or second main control module 4012 detect the opposite end operating state for normal, then communication is normal between the two, then first or second main control module detects self whether have equipment fault, if first main control module 4011 or second main control module 4012 detect the equipment of itself fault, then to self descending the electricity operation, perhaps close all RF output channels of this first or the 2nd QAM module, worked on by the main control module of opposite end operate as normal.If first or second main control module is undesired with the heartbeat of corresponding the first or the 2nd QAM intermodule separately, perhaps first or second main control module can't be received the heartbeat answer of the first or the 2nd corresponding QAM module, then can descend the electricity operation to the first or the 2nd QAM module of this correspondence.
First or second main control module can further comprise TS code stream processing module and backup management module as described in Figure 2, and the first or the 2nd QAM module can further comprise QAM modulation and up-conversion module and backup management module as described in Figure 2.Do not repeat them here.
Fig. 5 is the QAM device systems logical construction block diagram of another one exemplary embodiment of the present invention;
As shown in Figure 5, this QAM device systems comprises QAM equipment 501, the first mixing equipment 502 that links to each other with this QAM equipment 501 and the second mixing equipment 503, also comprise a RF switch 504 that links to each other with the first mixing equipment 502, and the 2nd RF switch 505 and the 3rd RF switch 506 that directly link to each other with QAM equipment 501 separately, and the 3rd mixing equipment 507 that links to each other respectively with first, second, third RF switch.
Further, this QAM equipment 501 comprises main control module 5011 and a QAM module 5012 that links to each other with this main control module respectively and the 2nd QAM module 5013, wherein, a described QAM module 5012 comprises first to fourth RF port, and described the 2nd QAM module also comprises first to fourth RF port.Wherein, the first and second RF ports of the one QAM module link to each other with the first mixing equipment 502, the first and second RF ports of the 2nd QAM module link to each other with the second mixing equipment 503, the 3rd RF port of first and second main control modules switches 505 with the 2nd RF and links to each other, and the 4th RF port of first and second main control modules links to each other with the 3rd RF switch 506.
This QAM device systems divides into groups the RF port of the first and second QAM modules, M RF port can be divided into the N group, M＞=N wherein, and each grouping comprises a RF port at least, inserts a RF switch after each RF port grouping mixing.When main control module detects certain RF port failure, all the RF output ports of grouping under this RF port can be closed, when the RF switch detects the RF dropout, start automatically and switch.As, the first and second RF ports of the one QAM module and the first and second RF ports of the 2nd QAM module are group1, the 3rd RF port of the first and second QAM modules is group2, the 4th RF port of the first and second QAM modules is group3, main control module 5011 detects the channel failure of a QAM module the one RF port correspondence, this main control module 5011 controls the one QAM module is closed the first and second RF ports of a QAM module, the one RF switch can automatically switch to the first and second RF ports of the 2nd QAM module, and other RF ports can't switch.Coverage is as far as possible little in the time of can guaranteeing failover, realizes the switching of port level.
It should be noted that the above-mentioned port packet mode that goes out does not as shown in the figure limit the scope of the invention, can expand according to actual needs.
Fig. 6 is the QAM device systems backup method schematic flow diagram according to one embodiment of the invention;
It should be noted that this QAM device systems comprises the first and second QAM equipment.
As shown in Figure 6, this method comprises:
601, a QAM equipment and the 2nd QAM equipment regularly carry out heartbeat detection, send heartbeat detection message to opposite end QAM equipment;
602, when detecting opposite end QAM equipment fault, can't receive that perhaps the heartbeat of opposite end QAM equipment is replied, local terminal QAM equipment then is set forbids the backup switching;
603, when the described first or the 2nd QAM Equipment Inspection normal to opposite end QAM equipment, and communication is normal between the two, then detects the local terminal equipment fault;
604, if the described first or the 2nd QAM Equipment Inspection to the local terminal equipment fault, is then closed local terminal RF port.
Concrete, when detect opposite end QAM equipment be normal condition and heartbeat between the two just often, the first and second QAM equipment detect oneself operating state respectively, when detecting when self having equipment fault, the QAM module RF that closes itself exports.When the level of the RF signal that the RF switch of back level is imported is unusual, automatically switch to the RF signal of another road QAM equipment input after detecting through mixing.
Those of ordinary skills can recognize, unit and the algorithm steps of each example of describing in conjunction with embodiment disclosed herein, can realize with electronic hardware, computer software or the combination of the two, for the interchangeability of hardware and software clearly is described, composition and the step of each example described in general manner according to function in the above description.These functions still are that software mode is carried out with hardware actually, depend on application-specific and the design constraint of technical scheme.The professional and technical personnel can specifically should be used for using distinct methods to realize described function to each, but this realization should not thought and exceeds scope of the present invention.
The those skilled in the art can be well understood to, and for the convenience described and succinct, the concrete course of work of the system of foregoing description, device and unit can not repeat them here with reference to the corresponding process among the preceding method embodiment.
In several embodiment that the application provides, should be understood that disclosed system, apparatus and method can realize by other mode.For example, device embodiment described above only is schematic, for example, the division of described unit, only be that a kind of logic function is divided, during actual the realization other dividing mode can be arranged, for example a plurality of unit or assembly can in conjunction with or can be integrated into another system, or some features can ignore, or do not carry out.In addition, the shown or coupling each other discussed or directly be coupled or communicate to connect and can be the indirect coupling by some interfaces, device or unit or communicate to connect also can be electric, machinery or other form connect.
Described unit as separating component explanation can or can not be physically to separate also, and the parts that show as the unit can be or can not be physical locations also, namely can be positioned at a place, perhaps also can be distributed on a plurality of network element.Can select wherein some or all of unit to realize the purpose of embodiment of the invention scheme according to the actual needs.
In addition, each functional unit in each embodiment of the present invention can be integrated in the processing unit, also can be that the independent physics in each unit exists, and also can be that two or more unit are integrated in the unit.Above-mentioned integrated unit both can adopt the form of hardware to realize, also can adopt the form of SFU software functional unit to realize.
If described integrated unit is realized with the form of SFU software functional unit and during as independently production marketing or use, can be stored in the computer read/write memory medium.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words, perhaps all or part of of this technical scheme can embody with the form of software product, this computer software product is stored in the storage medium, comprise that some instructions are with so that a computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out all or part of step of the described method of each embodiment of the present invention.And aforesaid storage medium comprises: various media that can be program code stored such as USB flash disk, portable hard drive, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD.
The above; it only is the specific embodiment of the present invention; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; can expect modification or the replacement of various equivalences easily, these modifications or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (16)
1. a QAM device systems is characterized in that, comprising:
The one QAM equipment and the 2nd QAM equipment that is used with a described QAM equipment;
The first mixing equipment that links to each other with a described QAM equipment and the second mixing equipment that links to each other with described the 2nd QAM equipment; And, the RF switch that links to each other with the described first and second mixing equipment respectively;
Wherein, the described first and second QAM equipment are worked simultaneously, be used for to the transport stream of input carry out multiplexing and the QAM modulation after, send radiofrequency signal to the described first and second mixing equipment separately respectively; The described first and second mixing equipment send to described RF switch after the radiofrequency signal of input is carried out Frequency mixing processing, and described RF switch selects one tunnel radiofrequency signal to send into the hybrid fiber coax hfc plant arbitrarily.
2. QAM device systems as claimed in claim 1, it is characterized in that, a described QAM equipment and described the 2nd QAM equipment regularly carry out heartbeat detection mutually, when detecting opposite end QAM equipment and be the communication failure of malfunction or the described first and second QAM equipment rooms, forbid that then this QAM equipment backs up handover operation.
3. QAM device systems as claimed in claim 2, it is characterized in that, when the described first or the 2nd QAM Equipment Inspection is normal condition and communicates by letter just often between the two to opposite end QAM equipment, the described first and second QAM equipment detect self working state respectively, when detecting when self having equipment fault, close self prevention at radio-frequency port; Described RF switch is detecting RF signal level through the input after the mixing when unusual, automatically switches to the RF signal of another road QAM equipment input.
4. QAM device systems as claimed in claim 1 is characterized in that, the described first and second QAM equipment all further comprise:
Be used for that the TS code stream is handled and the main control module of fault detect with link to each other the QAM module of modulating for QAM with described main control module.
5. QAM device systems as claimed in claim 4 is characterized in that, described main control module further comprises:
TS code stream processing module is used for the TS code stream of input is encoded and multiplexing process;
First backup management module is used for described TS code stream processing module is carried out fault detect, also is used for described main control module is carried out fault detect.
6. QAM device systems as claimed in claim 5 is characterized in that, described QAM module further comprises:
QAM modulation and up-conversion module are used for the code stream of described TS code stream processing module input is carried out QAM modulation and upconversion process;
Second backup management module is used for fault detect is carried out in described QAM modulation and up-conversion module, also is used for described QAM module is carried out fault detect, and testing result is reported described first backup management module.
7. QAM device systems as claimed in claim 6 is characterized in that, described QAM module also comprises:
Power module is used for described QAM module for power supply.
8. a QAM device systems is characterized in that, this system comprises:
QAM equipment, first and second mixing equipment that link to each other with described QAM equipment separately, the RF switch that links to each other respectively with the described first and second mixing equipment; Wherein, described QAM equipment be used for to the transport stream of input carry out multiplexing and the QAM modulation after, send radiofrequency signal to the described first and second mixing equipment respectively; The described first and second mixing equipment send to described RF switch after the radiofrequency signal of input is carried out Frequency mixing processing, and described RF switch selects one tunnel radiofrequency signal to send into the hybrid fiber coax hfc plant arbitrarily.
9. QAM device systems as claimed in claim 8 is characterized in that, described QAM equipment further comprises:
Be used for first and second main control modules of the processing of TS code stream and fault detect, can carry out heartbeat detection mutually between described first and second main control modules;
Difference all links to each other with described first and second main control modules separately, is used for the first and second QAM modules of QAM modulation.
10. QAM device systems as claimed in claim 9 is characterized in that, a described QAM module links to each other with the described first mixing equipment, and described the 2nd QAM module links to each other with the described second mixing equipment.
11. QAM device systems as claimed in claim 10, it is characterized in that, when described first or second main control module detect the opposite end main control module be normal condition and between the two communication just often, described first and second main control modules detect self working state respectively, when detecting when self having equipment fault, close self prevention at radio-frequency port; Described RF switch is detecting RF signal level through the input after the mixing when unusual, automatically switches to the RF signal of another road QAM module output.
12. QAM device systems as claimed in claim 8 is characterized in that, described QAM equipment further comprises:
Main control module is for carrying out multiplexing to the TS code stream of importing and described QAM equipment being carried out fault detect;
Link to each other respectively with described main control module, be used for QAM and modulate a QAM module and the 2nd QAM module.
13. a QAM device systems is characterized in that, this device systems comprises:
QAM equipment, described QAM equipment comprises: main control module, for carrying out multiplexing to the TS code stream of importing and described QAM equipment being carried out fault detect; Link to each other respectively with described main control module, be used for a QAM module and the 2nd QAM module of QAM modulation; The described first and second QAM modules comprise at least two RF ports;
Distinguish the first and second mixing equipment that link to each other separately with the described first and second QAM module RF ports, and the RF switch that links to each other with the described first and second mixing equipment.
14. the backup method of a QAM device systems, this QAM device systems comprises the first and second QAM equipment, it is characterized in that, this method comprises:
A described QAM equipment and described the 2nd QAM equipment regularly carry out heartbeat detection mutually, send heartbeat detection message to opposite end QAM equipment;
Arrive opposite end QAM equipment fault when the described first or the 2nd QAM Equipment Inspection, can't receive that perhaps the heartbeat of opposite end QAM equipment is replied, local terminal QAM equipment then is set forbids the backup switching.
15. method as claimed in claim 14 is characterized in that, described method also comprises:
When the described first or the 2nd QAM Equipment Inspection opposite end QAM equipment is normal, and communication is normal between the two, then detects the local terminal equipment fault.
16. method as claimed in claim 15 is characterized in that, if local terminal RF port is then closed in the described first or the 2nd QAM Equipment Inspection local terminal equipment fault.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101452444A CN103269281A (en) | 2013-04-24 | 2013-04-24 | QAM device standby system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101452444A CN103269281A (en) | 2013-04-24 | 2013-04-24 | QAM device standby system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103269281A true CN103269281A (en) | 2013-08-28 |
Family
ID=49012891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101452444A Pending CN103269281A (en) | 2013-04-24 | 2013-04-24 | QAM device standby system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103269281A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107086874A (en) * | 2016-02-15 | 2017-08-22 | 株式会社东芝 | Transmission system |
| CN112557752A (en) * | 2020-12-06 | 2021-03-26 | 苏州大学 | Electromagnetic signal monitoring system and computer storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101106443A (en) * | 2007-08-10 | 2008-01-16 | 中兴通讯股份有限公司 | A system and method for controlling switch of primary and backup board |
| CN201571061U (en) * | 2009-12-15 | 2010-09-01 | 汕头高新区亚威科技有限公司 | Dual-channel backup optical receiver for fiber-optic transmission system |
| CN102215134A (en) * | 2011-06-30 | 2011-10-12 | 成都驰通数码***有限公司 | Hot standby switcher of IP (Internet Protocol) code stream |
| US20120045220A1 (en) * | 2009-03-18 | 2012-02-23 | Sasa Veljkovic | Multi channel encoder, demodulator, modulator and digital transmission device for digital video insertion in network edge applications |
-
2013
- 2013-04-24 CN CN2013101452444A patent/CN103269281A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101106443A (en) * | 2007-08-10 | 2008-01-16 | 中兴通讯股份有限公司 | A system and method for controlling switch of primary and backup board |
| US20120045220A1 (en) * | 2009-03-18 | 2012-02-23 | Sasa Veljkovic | Multi channel encoder, demodulator, modulator and digital transmission device for digital video insertion in network edge applications |
| CN201571061U (en) * | 2009-12-15 | 2010-09-01 | 汕头高新区亚威科技有限公司 | Dual-channel backup optical receiver for fiber-optic transmission system |
| CN102215134A (en) * | 2011-06-30 | 2011-10-12 | 成都驰通数码***有限公司 | Hot standby switcher of IP (Internet Protocol) code stream |
Non-Patent Citations (2)
| Title |
|---|
| 周冲: "数字电视IP前端***的构建", 《有线电视技术》, 31 March 2013 (2013-03-31) * |
| 李必虎等: "有线数字电视市县联网光纤环网***的设计与实践", 《中国有线电视》, 31 October 2009 (2009-10-31) * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107086874A (en) * | 2016-02-15 | 2017-08-22 | 株式会社东芝 | Transmission system |
| CN107086874B (en) * | 2016-02-15 | 2019-07-23 | 株式会社东芝 | Transmission system |
| CN112557752A (en) * | 2020-12-06 | 2021-03-26 | 苏州大学 | Electromagnetic signal monitoring system and computer storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101753244B (en) | Method and system for transporting service in RRU loop network | |
| CN102137009B (en) | Method, system and equipment for processing Dual-layer service in network | |
| CN103560955A (en) | Method and device for switching between redundancy devices | |
| CN102271370B (en) | Base station equipment and channel unit switching method | |
| CN101534198B (en) | Communication system | |
| CN102883355B (en) | Building base band unit, base band processing board and fault processing method for base band processing board | |
| CN101938377A (en) | link aggregation error protection method, equipment and system | |
| US10721637B2 (en) | Distributed antenna system continuity | |
| CN102014019A (en) | Aggregated link switching method and device | |
| CN103081439A (en) | Method of managing logical link and communication device | |
| CN112118070A (en) | Control method of forwarding network, network equipment and system | |
| CN102970172B (en) | A kind of method that communication link switches, equipment and communication system | |
| CN102377677B (en) | Method and system for quickly switching protection paths in multi-protocol label switching (MPLS) network | |
| CN103269281A (en) | QAM device standby system and method | |
| CN104660445A (en) | Power line carrier system based on path cognition and networking method thereof | |
| CN102833173A (en) | Network device and tunnel adaptation method | |
| CN101163038A (en) | Ethernet equipment link protecting method | |
| CN103067205B (en) | Under same Host Administration, share the RT and backup RT changing method of same address | |
| CN103036724A (en) | State information transmission method and network equipment and combination equipment | |
| CN102404143A (en) | Method for processing port failures based on LACP and LACP terminal | |
| WO2024087636A1 (en) | Remote-unit protection system | |
| CN103891204B (en) | The method of link switchover and switching equipment | |
| CN100486287C (en) | Remote power supply system | |
| CN103001785B (en) | Realize method and the MRF system of the redundancy backup of MRF system | |
| CN101291160A (en) | Backup system for microwave optical fiber link and backup method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130828 |
|
| RJ01 | Rejection of invention patent application after publication |