Device and method for realizing providing DOCSIS service by radio frequency passive optical network
A passive optical network and radio frequency technology, which is applied in the field of radio and television, can solve the problems of difficulty for radio and television operators, and achieve the effect of network expansion.
Active Publication Date: 2010-05-05
LOOTOM TELCOVIDEO NETWORK WUXI
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Problems solved by technology
This makes it difficult for radio and television operators to continue to benefit from the return on investment of existing CMTS and CM and back-end application systems while using new FTTx technology to provide ultra-broadband Internet services
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[0020] The present invention will be further described below in conjunction with drawings and embodiments.
[0021] Such as figure 1 Shown is a typical network structure diagram of the embodiment of the present invention RF-PON, which includes at least one CATV (cable television system) head end 208, a typical optical distribution network PON 209, at least one MiniNode 211 and corresponding The user end 210 of. The device of the present invention serves as a MiniNode of RF-PON. The MiniNode 211 at least includes a reverse laser 105 , a laser driver 106 , and a laser driver trigger 107 . Laser driver trigger 107 controlled signal comes from RF detection or SNMP network management, trigger laser driver 106 drives reverse laser 105 to emit a burst optical signal, this optical signal carries reverse signal information from the user end, and is transmitted to at least one head through PON 209 End device 208.
[0022] The reverse signal of the user terminal 210 may be DOCSIS com...
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The invention provides a device for realizing providing DOCSIS service by a radio frequency passive optical network (RF-PON). The device comprises an RF detecting module, a laser drive circuit and a laser transmitting module which are arranged in a protective shell; the RF detecting module receives an electrical signal transmitted from a coaxial-cable, distinguishes the signal from noise quickly, and generates a control signal; the laser drive circuit is triggered by the control signal coming from the RF detecting module or an SNMP webmaster to generate a burst drive electrical signal to drive the laser; the laser transmitting module is controlled by the laser drive circuit, simultaneously converts an HFC reverse electrical signal into an optical signal, and transmits the optical signal. The invention has the advantages that in virtue of an RF-PON device, cable TV operators are permitted to continue to apply conventional HFC backstage equipment in PON, use existing equipment and charging system, and need not to changing the wiring of the last kilometer in which HFC coaxially accessed.
Description
technical field [0001] The invention relates to the field of broadcasting and television, in particular to a device and a method for realizing a Radio Frequency Passive Optical Network (RF-PON) to provide a Data Over Cable Service Interface Specification (DOCSIS) service. Background technique [0002] In the field of radio and television, fiber-coaxial hybrid network (Hybrid Fiber Coax: HFC) has been widely used at present, and its network structure is a tree topology, which means that its data communication is asymmetric. When the HFC return channel (5-65MHz) is only used to transmit video-on-demand control signals or status monitoring signals of HFC equipment (amplifiers, optical workstations, etc.), the bandwidth requirements for the return channel are not high. However, with the in-depth development of broadband access services and VOIP services, the utilization rate of return channels is also increasing. [0003] Followed by the penetration of optical fiber to the comm...
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IPC IPC(8): H04B10/12H04B10/08H04B10/071
Inventor 尹冠民马金满李剑鸿
Owner LOOTOM TELCOVIDEO NETWORK WUXI