Optical switch for radio access network
First Claim
1. A switch configured to connect a plurality of remote radio units with a plurality of main units in a radio access network, the switch comprising:
- a first stage comprising one or more first units configured to receive a signal originating from a remote radio unit, and configured to output one or more spectral components having one or more optical wavelengths, wherein the one or more first units are configured to optionally time or packet multiplex signals from the remote radio units, wavelength division multiplex selected wavelengths and transmit the selected wavelengths to a central stage;
the central stage configured to receive the one or more optical wavelengths, and transfer the one or more spectral components to an output port determined by the one or more optical wavelengths; and
a second stage comprising one or more second units configured to receive the one or more spectral components from the central stage and output a signal towards a main unit, wherein the one or more second units are further configured to receive the one or more optical wavelengths from the central stage, wavelength division demultiplex the one or more optical wavelengths, and optionally time or packet demultiplex signals and then transmit the signals to the main unit,wherein the one or more first units are configured to control the one or more optical wavelengths of the one or more spectral components such that the one or more spectral components are transferred by the central stage to a selected one of said second units.
1 Assignment
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Accused Products
Abstract
A switch configured to connect a plurality of remote radio units with a plurality of main units in a radio access network. The switch comprises a first stage comprising one or more first units configured to receive a signal originating from a remote radio unit, and configured to output one or more spectral component having a wavelength. The switch further comprises a central stage configured to receive the one or more optical wavelength, and transfer the spectral component to an output port determined by the wavelength. The switch further comprises a second stage comprising one or more second units configured to receive the one or more spectral component from the central stage and output a signal towards a main unit. The first unit is configured to control the wavelength of the output spectral component such that the spectral component is transferred by the central stage to a selected one of said second units.
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Citations
14 Claims
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1. A switch configured to connect a plurality of remote radio units with a plurality of main units in a radio access network, the switch comprising:
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a first stage comprising one or more first units configured to receive a signal originating from a remote radio unit, and configured to output one or more spectral components having one or more optical wavelengths, wherein the one or more first units are configured to optionally time or packet multiplex signals from the remote radio units, wavelength division multiplex selected wavelengths and transmit the selected wavelengths to a central stage; the central stage configured to receive the one or more optical wavelengths, and transfer the one or more spectral components to an output port determined by the one or more optical wavelengths; and a second stage comprising one or more second units configured to receive the one or more spectral components from the central stage and output a signal towards a main unit, wherein the one or more second units are further configured to receive the one or more optical wavelengths from the central stage, wavelength division demultiplex the one or more optical wavelengths, and optionally time or packet demultiplex signals and then transmit the signals to the main unit, wherein the one or more first units are configured to control the one or more optical wavelengths of the one or more spectral components such that the one or more spectral components are transferred by the central stage to a selected one of said second units. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of operating a switch connecting a plurality of remote radio units with a plurality of main units in a radio access network, the method comprising:
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receiving at a first stage a signal originating from a remote radio unit, and outputting one or more spectral components having one or more optical wavelengths, wherein the first stage comprises one or more first units configured to optionally time or packet multiplex signals from the remote radio units, wavelength division multiplex selected wavelengths and transmit the selected wavelengths to a central stage; receiving at the central stage the one or more optical wavelengths, and transferring the one or more spectral components to an output port determined by the one or more optical wavelengths; and receiving at a second stage the one or more spectral components and outputting a signal towards a main unit, wherein the one or more optical wavelengths of the one or more spectral components output from the first stage is controlled such that the one or more spectral components are transferred by the central stage to a second unit that is selected from one or more second units, wherein the one or more second units are further configured to receive the one or more optical wavelengths from the central stage, wavelength division demultiplex the one or more optical wavelengths, and optionally time or packet demultiplex signals and then transmit the signals to the main unit. - View Dependent Claims (12, 13)
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14. A non transitory computer readable storage medium comprising instructions that, when performed by a processor, cause the processor to implement a method of operating a switch connecting a plurality of remote radio units with a plurality of main units in a radio access network, the method comprising:
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receiving at a first stage a signal originating from a remote radio unit, and outputting one or more spectral components having one or more optical wavelengths, wherein the one or more first units are configured to optionally time or packet multiplex signals from the remote radio units, wavelength division multiplex selected wavelengths and transmit the selected wavelengths to a central stage; receiving at the central stage the one or more optical wavelengths, and transferring the one or more spectral components to an output port determined by the one or more optical wavelengths; and receiving at a second stage the one or more spectral components and outputting a signal towards a main unit, wherein the one or more optical wavelengths of the one or more spectral components output from the first stage is controlled such that the one or more spectral components are transferred by the central stage to a second unit that is selected from one or more second units, wherein the one or more second units are further configured to receive the one or more optical wavelengths from the central stage, wavelength division demultiplex the one or more optical wavelengths, and optionally time or packet demultiplex signals and then transmit the signals to the main unit.
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Specification