Method for sharing optical fiber for cloud-based wired and wireless access network, and system and apparatus for same
First Claim
1. A system for delivering uplink signals and downlink signals between a plurality of donor units and a plurality of remote units in cloud-based radio access network (C-RAN), the system comprising:
- a centralization device connected to the plurality of donor units; and
a plurality of distribution devices, each distribution device connected to a respective subset of the plurality of remote units,wherein the centralization device and the plurality of distribution devices are interconnected through optical fibers forming an optical ring network,wherein the centralization device is configured toreceive a plurality of downlink signals from the plurality of donor units andoptically transmit the plurality of downlink signals to the plurality of distribution devices at respective wavelengths assigned to the each distribution devices, andsaid each distribution device is configured toreceive a plurality of uplink signals from the respective subset of the plurality of remote units andoptically transmit the plurality of uplink signals to the centralization device at the assigned wavelengths, andwherein the plurality of donor units includes a plurality of wireless donor units and a plurality of wired donor units, andthe plurality of remote units include a plurality of wireless remote units and a plurality of wired remote units,wherein the centralization device comprisesa first transmission rate converter configured toreceive downlink signals from a part of the plurality of donor units at low transmission rate,process the received downlink signals to generate summing signals, each summing signal carrying at least two downlink signals, andconvert summing signals at different wavelengths to generate optical summing signals at high transmission rate,wherein the first transmission rate converter comprisesa first wireless transmission rate converter configured toreceive downlink signals from a part of the plurality of wireless donor units, andprocess the received downlink signals to generate summing signals, andconvert the summing signals at different wavelengths to generate optical summing signals, anda first wired transmission rate converter configured toreceive downlink signals from a part of the plurality of wired donor units,process the received downlink signals to generate summing signals, andconvert the summing signals at different wavelengths to generate optical summing signals.
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Accused Products
Abstract
A system for sharing an optical fiber for a cloud-based wired and wireless access network, includes: a centralization device to generate summing signals by respectively summing multi-channel optical signals input from a wireless donor unit group and by summing multi-channel wired signals input from a wired donor unit group or generate wavelength-converted signals by wavelength-converting the multi-channel optical signals or the multi-channel wired signals, multiplex the summing signals or the wavelength-converted signals, and distribute the summing signals or the wavelength-converted signals to a plurality of devices connected to the centralization device via a shared optical fiber; and a distribution device group to generate corresponding optical signals by demultiplexing the summing signals or the wavelength-converted signals in units of wavelengths, and transmit the corresponding optical signals or the multi-channel wired signals to a wireless remote unit group and/or a wired remote unit group via a preset optical fiber.
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Citations
6 Claims
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1. A system for delivering uplink signals and downlink signals between a plurality of donor units and a plurality of remote units in cloud-based radio access network (C-RAN), the system comprising:
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a centralization device connected to the plurality of donor units; and a plurality of distribution devices, each distribution device connected to a respective subset of the plurality of remote units, wherein the centralization device and the plurality of distribution devices are interconnected through optical fibers forming an optical ring network, wherein the centralization device is configured to receive a plurality of downlink signals from the plurality of donor units and optically transmit the plurality of downlink signals to the plurality of distribution devices at respective wavelengths assigned to the each distribution devices, and said each distribution device is configured to receive a plurality of uplink signals from the respective subset of the plurality of remote units and optically transmit the plurality of uplink signals to the centralization device at the assigned wavelengths, and wherein the plurality of donor units includes a plurality of wireless donor units and a plurality of wired donor units, and the plurality of remote units include a plurality of wireless remote units and a plurality of wired remote units, wherein the centralization device comprises a first transmission rate converter configured to receive downlink signals from a part of the plurality of donor units at low transmission rate, process the received downlink signals to generate summing signals, each summing signal carrying at least two downlink signals, and convert summing signals at different wavelengths to generate optical summing signals at high transmission rate, wherein the first transmission rate converter comprises a first wireless transmission rate converter configured to receive downlink signals from a part of the plurality of wireless donor units, and process the received downlink signals to generate summing signals, and convert the summing signals at different wavelengths to generate optical summing signals, and a first wired transmission rate converter configured to receive downlink signals from a part of the plurality of wired donor units, process the received downlink signals to generate summing signals, and convert the summing signals at different wavelengths to generate optical summing signals. - View Dependent Claims (2, 3, 5)
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4. A system for delivering uplink signals and downlink signals between a plurality of donor units and a plurality of remote units in cloud-based radio access network (C-RAN), the system comprising:
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a centralization device connected to the plurality of donor units; and a plurality of distribution devices, each distribution device connected to a respective subset of the plurality of remote units, wherein the centralization device and the plurality of distribution devices are interconnected through optical fibers forming an optical ring network, wherein the centralization device is configured to receive a plurality of downlink signals from the plurality of donor units and optically transmit the plurality of downlink signals to the plurality of distribution devices at respective wavelengths assigned to the each distribution devices, and said each distribution device is configured to receive a plurality of uplink signals from the respective subset of the plurality of remote units and optically transmit the plurality of uplink signals to the centralization device at the assigned wavelengths, and wherein the plurality of donor units includes a plurality of wireless donor units and a plurality of wired donor units, and the plurality of remote units include a plurality of wireless remote units and a plurality of wired remote units, wherein the centralization device comprises a first converter configured to; receive downlink signals from a rest of the plurality of donor units; and convert the received downlink signals at different wavelengths to generate optical wavelength-converted signals, wherein the first converter comprises; a first wavelength converter configured to optically receive downlink signals from a rest of the plurality of wireless donor units, and convert the received downlink signals at different wavelengths to generate optical wavelength-converted signals; and a first electro-optical converter configured to electrically receive downlink signals from a rest of the plurality of wired donor units, and convert the received downlink signals at different wavelengths to generate optical wavelength-converted signals.
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6. A method performed by the system for delivering uplink signals and downlink signals between a plurality of donor units and a plurality of remote units in cloud-based radio access network (C-RAN), the method comprising:
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receiving, by the centralization device, a plurality of downlink signals from the plurality of donor units at low transmission rates; processing, by the centralization device, a part of the plurality of downlink signals to generate a plurality of summing signals, each summing signal carrying at least two downlink signals; converting, by the centralization device, the plurality of summing signals at different wavelengths to generate a plurality of converted optical signals of high transmission rates, and convert a rest of the plurality of downlink signals at different wavelengths to generate a plurality of converted optical signals; multiplexing, by the centralization device, the plurality of converted optical signals to generate a multiplexed optical signal; distributing, by the centralization device, the multiplexed optical signal into the optical ring network; receiving, by each distribution device, the multiplexed optical signal from the optical ring network; demultiplexing, by each distribution device, the multiplexed optical signal to generate the plurality of converted optical signals; processing, by each distribution device, optical signal of the wavelength associated with the summing signal to generate at least two downlink signals; and transmitting, by each distribution device, a plurality of downlink signals to the respective subset of the plurality of remote units.
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Specification