Wideband data communication system and method for integrating IP network and cable television network

Abstract

The invention relates to a wideband data communication system and method for integrating an IP network and a cable television network. The method comprises the following steps: a terminal and an integration channel gateway establish an end-to-end two-way channel on the IP network; an IP / digital video broadcasting (DVB) gateway and the cable television network constitutes a one-way communication channel from the integration channel gateway to the terminal; the terminal transmits an uplink IP packet to the integration channel gateway through the two-way communication channel of the IP network, and the integration channel gateway acquires the uplink IP packet from the IP network, inquires an address mapping table, converts the address and transmits the converted uplink IP packet to the IP network; and the integration channel gateway receives a responded downlink IP packet from the IP network, inquires the address mapping table and converts the address, and the integration channel gatewaytransmits the converted downlink IP packet to the terminal through the two-way channel of the IP network, or through the one-way communication channel composed of the IP / DVB gateway and the cable television network from the integration channel gateway to the terminal or simultaneously through the two-way communication channel and the one-way communication channel.

Description

technical field [0001] The invention relates to broadband data communication technology, in particular to a broadband data communication system and method for merging IP network and cable TV network. Background technique [0002] The cable TV network is a point-to-multipoint tree-type network structure broadcasting and television broadband integrated network. The network has a broadband downlink broadcast channel and divides signals according to frequency division multiple access. In order to realize two-way interactive services on the cable TV network, two-way data transmission must be solved. The methods for realizing two-way data transmission are usually divided into two categories: one uses technologies including Docsis, MoCA, HiNOC, HomePlug AV, HPHA, WLAN, etc. Carry out two-way transformation; another type uses out-of-band methods to solve uplink data transmission, such as ADSL, GPRS, CDMA, Wifi, Bluetooth and other technologies. [0003] Structural diagram of the VO...

AI Technical Summary

Problems solved by technology

[0007] Other existing services are similar to VOD services. When using IP and cable TV networks, the service server needs to choose to use cable TV network or IP network to transmit data. When using cable TV network to transmit data, audio and video content needs to be encapsulated into MPEG- TS transmission stream, the two-way interactive service developed and provided in this way is difficult, poor in network adaptability, and poor in portability; in addition, the existing patent "200610035447.8" focuses on transmission, and the separation of its downlink data uses a specific IP network switch. In terms of network deployment, IP network switches and IP / DVB gateways need to be in the same subnet; the patent "200710001262.X" focuses on content conversion processing, and its bidirectional network conversion equipment is a specific routing device that must be deployed at the access of the set-top box network segment

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