Utilize home gateway to realize the method for light network termination and user side exchanges data
Technical field
The present invention relates to a kind of home gateway, particularly in the optical network system of realizing fiber-to-the-subscriber, utilize home gateway to realize the method for light network termination and user side exchanges data.
Background technology
Along with the continuous reduction of the abundant gradually and cost of broadband application, people are grown to even greater heights to the demand of communication bandwidth.The ADSL technology is the main flow means of current family and medium-sized and small enterprises broadband access, sustained and rapid development along with the Internet, all kinds of value-added services continue to bring out, and video conference, Online Gaming, IPTV, video monitoring, the Internet telephony application are had higher requirement to the network insertion bandwidth.Present broadband mainstream technology ADSL exists in the transmission course loss big, and frequency band is narrow, the influence that transmission range is short, and expense is higher, is subjected to many shortcomings such as its transmission signals instability of ectocine, causes bottleneck to the Network Transmission section of wide band access user end.Optical Access Network can provide two-forty, the advantage that high broadband and long distance insert, the family that is widely used gradually, office building etc. in the place.User terminal gateway carries out conversion process to digitized video in traditional optical network system, realize the high speed Internet access of computer, how to realize the synchronous conversion of digitized video and audio signal, when realizing high speed Internet access, can dial network telephone, become the new needs that fiber broadband inserts.
Summary of the invention
For the speed that solves ADSL access band net in the prior art slow, Network Transmission is apart from weak point, the shortcoming that expense is high, and for satisfying the synchronous conversion that realizes digitized video and audio signal, when realizing high speed Internet access, the needs that can dial network telephone, the present invention proposes a kind of method of utilizing home gateway to realize light network termination and user side exchanges data, described method realizes by means of following hardware facility: supporting light network transmission system to the family, be connected with optical transport network, and by realizing light under the CPU management, the conversion equipment of the signal of telecommunication and output of supporting information or input terminal, described by realizing light under the CPU management, the conversion equipment of the signal of telecommunication is the one family gateway, this gateway is connected between Optical Network Terminal and supporting information output of user or the input terminal, wherein home gateway is supported the GPON host-host protocol of ITU-984.X standard, interface is set on the home gateway directly to be connected with the user terminal peripheral hardware, comprise the optical-fiber network module in the above gateway apparatus, supporting data information memory module, under the management of supporting program is supported, realize light net and output of supporting information or input terminal information exchange according to following steps:
A. EPON is connected with optical fiber interface with optical-fiber network module in being arranged on home gateway, receives the light pulse data from Optical Network Terminal, is stored in after opto-electronic conversion in the corresponding buffer of optical-fiber network module, and the unloading of classifying again is to each functional module,
B. the clock data recovery circuit in the gateway (CDR) at first carries out the recovered clock signal to the Frame of receiving, rebuild the synchronous sequence of clock data signal, each functional module is to decompressing data message according to recovering sequential, code conversion, be converted to digital video data flow or speech digit data flow, send to respective physical address respectively in accordance with the terminal equipment of hypervisor registration
C. video and voice data processing module are carried out the denoising reorganization with the video, the voice data group that receive, are reduced to digitized video, audio signal, and are transferred to the external device signal input part of user terminal by supporting interface circuit,
D. user's external equipment is received from feeding back or exchange message behind the information flow of home gateway; By the corresponding interface input of home network; Compressing conversion; Data message after the conversion is sent on the supporting optical-fiber network mould by internal system bus; The optical-fiber network module encapsulates, is converted to the Frame of optical network data transformat to this data message; Clock multiplex circuit in the gateway respective modules utilizes Optical Fiber Transmission in optical network system by fiber port this Frame
E. the user is by the peripheral hardware of terminal, by sending order, asking family's intra-gateway system bus, send in the optical-fiber network module of home gateway, optical-fiber network module in the home gateway encapsulates, is converted to the Frame with the optical network data transformat to this signal, this Frame utilizes Optical Fiber Transmission in optical network system by fiber port, and realizes the connection and the information exchange of strange land terminal by means of the home gateway that target terminal is provided with.
Be provided with the interface that is used to connect phone, fax on the home gateway, and the interface that is used to connect computer, switch or router.Home gateway can be finished being connected and information exchange of strange land terminal between other users in user side and the optical network system.It is the integrated electronic chip of MSC7120 that home gateway master control core can adopt model.
The invention has the beneficial effects as follows, the method of utilizing home gateway realization light network termination and user side exchanges data that the present invention proposes is carried out conversion process to digitized video and voice signal, and by main control chip digitized video and audio signal are carried out treatment conversion and cooperate on the gateway corresponding Peripheral Interface is set, can realize the comprehensive home gateway of integrated use such as multiple external device such as computer, phone, fax and switch or router etc.
Description of drawings
Accompanying drawing 1 is data flow figure of the present invention
Embodiment
Referring to accompanying drawing 1, the present invention proposes a kind of method of utilizing home gateway to realize light network termination and user side exchanges data, described method realizes by means of following hardware facility: supporting light network transmission system to the family, be connected with optical transport network, and by realizing light under the CPU management, the conversion equipment of the signal of telecommunication and output of supporting information or input terminal, described by realizing light under the CPU management, the conversion equipment of the signal of telecommunication is the one family gateway, this gateway is connected between Optical Network Terminal and supporting information output of user or the input terminal, outlet terminal comprises computer, phone, fax, switch or router, wherein home gateway is supported the GPON host-host protocol of ITU-984.X standard, interface is set on the home gateway directly to be connected with the user terminal peripheral hardware, comprise the optical-fiber network module in the above gateway apparatus, supporting data information memory module, under the management of supporting program is supported, during use, realize light net and output of supporting information or input terminal information exchange according to following steps:
A. EPON is connected with optical fiber interface with optical-fiber network module in being arranged on home gateway, receives the light pulse data from Optical Network Terminal, is stored in after opto-electronic conversion in the corresponding buffer of optical-fiber network module, and the unloading of classifying again is to each functional module,
B. the clock data recovery circuit in the gateway (CDR) at first carries out the recovered clock signal to the Frame of receiving, rebuild the synchronous sequence of clock data signal, each functional module is to decompressing data message according to recovering sequential, code conversion, be converted to digital video data flow or speech digit data flow, send to respective physical address respectively in accordance with the terminal equipment of hypervisor registration
C. video and voice data processing module are with the video that receives, the voice data group is carried out the denoising reorganization, be reduced to digitized video, audio signal, and be transferred to the external device signal input part of user terminal by supporting interface circuit, wherein digitized video is sent on the interface circuit that connects user terminal computer and digital TV set-top box, by transmission and the broadcast of computer and Digital Television to digital signal, audio signal is sent to the connection phone, on the interface circuit of fax, pass through phone, fax carries out networking telephone transmission of audio signals and broadcast
D. user's external equipment is received from feeding back or exchange message behind the information flow of home gateway; By the corresponding interface input of home network; Compressing conversion; Data message after the conversion is sent on the supporting optical-fiber network mould by internal system bus; The optical-fiber network module encapsulates, is converted to the Frame of optical network data transformat to this data message; Clock multiplex circuit in the gateway respective modules utilizes Optical Fiber Transmission in optical network system by fiber port this Frame
E. the user is by the peripheral hardware of terminal, by sending order, asking family's intra-gateway system bus, send in the optical-fiber network module of home gateway, optical-fiber network module in the home gateway encapsulates, is converted to the Frame with the optical network data transformat to this signal, this Frame utilizes Optical Fiber Transmission in optical network system by fiber port, and realizes the connection and the information exchange of strange land terminal by means of the home gateway that target terminal is provided with.By home gateway, user terminal can realize with optical network system in other users between being connected and information exchange of strange land terminal.
Be provided with the interface that is used to connect phone, fax on the home gateway, and the interface that is used to connect computer, switch or router, digital TV set-top box is formulated the TV network program by connecting the Ethernet interface accesses network.
It is the integrated electronic chip of MSC7120 that home gateway master control core can adopt model.
The method of utilizing home gateway realization light network termination and user side exchanges data that the present invention proposes can be carried out conversion process to digitized video and voice signal, and by main control chip digitized video and audio signal are carried out treatment conversion and cooperate on the gateway corresponding Peripheral Interface is set, can realize the comprehensive home gateway of integrated use such as multiple external device such as computer, phone, fax and switch or router etc.In addition, the Ethernet interface of high bandwidth can be used for the IPTV business, realizes utilizing broadband network to realize home entertaining modes such as IPTV.