Hybrid-fiber coaxial network-based high-speed QoS transmission system for internet protocol broadcasting service
First Claim
1. A Hybrid Coaxial Fiber (HCF) network-based high-speed quality of Service (QoS) transmission system for Internet Protocol (IP) broadcasting service, in which a Layer3 (L3) switch unit, a Cable Modem Termination System (CMTS) and a coupler are provided on an Internet Service Provider (ISP) side, and an optical distributor, a cable modem, and IP set-top box are provided on an Internet service subscriber side connected to the ISP side through an HFC network, comprising:
- one or more IP-Quadrature Amplification Modulator (IP-QAM) transmitters connected between the L3 switch unit and the coupler in parallel with the CMTS on the ISP side, the IP-QAM transmitters modulating phases and amplitudes of IP broadcasting service data transmission signals, which are transmitted from the L3 switch unit, into carrier signals having frequencies different from those of Internet service data transmission signals and cable TeleVision (TV) signals and then transmitting the modulated carrier signals; and
an IP-QAM modem connected to the coupler in parallel with the cable modem on the Internet service subscriber side, the IP-QAM modem demodulating the IP broadcasting service data transmitted from the IP-QAM transmitters, and transferring the demodulated IP broadcasting service data to the IP set-top box.
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Accused Products
Abstract
Disclosed herein is a Hybrid Coaxial Fiber (HCF) network-based high-speed Quality of Service (QoS) transmission system for IP broadcasting service. In the system, a L3 switch unit, a CMTS and a coupler are provided on an ISP side, and an optical distributor, a cable modem, and IP set-top box are provided on an Internet service subscriber side. The transmission system includes one or more IP-QAM transmitters and an IP-QAM modem. The IP-QAM transmitters are connected between the L3 switch unit and coupler on the ISP side in parallel with the CMTS, and modulate the phases and amplitudes of IP broadcasting service data transmission signals into carrier signals different from Internet service data transmission signals and cable TV signals. The IP-QAM modem is connected to the coupler in parallel with the cable modem, and demodulates the IP broadcasting service data and transfer the demodulated IP broadcasting service data to the IP set-top box.
30 Citations
6 Claims
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1. A Hybrid Coaxial Fiber (HCF) network-based high-speed quality of Service (QoS) transmission system for Internet Protocol (IP) broadcasting service, in which a Layer3 (L3) switch unit, a Cable Modem Termination System (CMTS) and a coupler are provided on an Internet Service Provider (ISP) side, and an optical distributor, a cable modem, and IP set-top box are provided on an Internet service subscriber side connected to the ISP side through an HFC network, comprising:
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one or more IP-Quadrature Amplification Modulator (IP-QAM) transmitters connected between the L3 switch unit and the coupler in parallel with the CMTS on the ISP side, the IP-QAM transmitters modulating phases and amplitudes of IP broadcasting service data transmission signals, which are transmitted from the L3 switch unit, into carrier signals having frequencies different from those of Internet service data transmission signals and cable TeleVision (TV) signals and then transmitting the modulated carrier signals; and
an IP-QAM modem connected to the coupler in parallel with the cable modem on the Internet service subscriber side, the IP-QAM modem demodulating the IP broadcasting service data transmitted from the IP-QAM transmitters, and transferring the demodulated IP broadcasting service data to the IP set-top box. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification