US 12,712,633 B2 · Data transmission method, radio frequency unit, baseband unit, and communication system

Abstract

This application provides a data transmission method, a radio frequency unit, a baseband unit, and a communication system. The baseband unit includes: a multi-wavelength integrated light source, configured to generate a first optical carrier and a second optical carrier that have different wavelengths; a first modulator, configured to modulate downlink data sent to the first radio frequency unit to the first optical carrier, to obtain a first downlink optical signal; a second modulator, configured to modulate downlink data sent to the second radio frequency unit to the second optical carrier, to obtain a second downlink optical signal; and a multiplexer/demultiplexer, configured to multiplex the first downlink optical signal and the second downlink optical signal into a downlink combined optical signal and send the downlink combined optical signal.

Claims7

Dependent claims

A radio frequency unit, comprising an input/output interface, a power splitter and a modulator, wherein

the input/output interface is configured to receive an optical carrier modulated with downlink data from a baseband unit;
the power splitter is configured to split the optical carrier into a first part of the optical carrier to a photoelectric detector for downlink data reception and a second part of the optical carrier to the modulator for uplink data modulation;
the modulator is configured to modulate uplink data sent to the baseband unit to the second part of the optical carrier, to obtain an uplink optical signal;
and
the input/output interface is further configured to send the uplink optical signal to the baseband unit.

2 more elements

A system comprising a baseband unit and a plurality of radio frequency units, wherein

the baseband unit comprises a multi-wavelength integrated light source configured to generate a plurality of optical carriers for the plurality of radio frequency units, a first optical carrier of the plurality of optical carriers being modulated with downlink data from the baseband unit;
a first radio frequency unit of the plurality of the plurality of radio frequency units is configured to receive the first optical carrier of the plurality of optical carriers, and send a first uplink optical signal to the baseband unit, wherein the first radio frequency unit comprises:
a power splitter, configured to split the first optical carrier into a first part of the first optical carrier to a photoelectric detector for downlink data reception and a second part of the first optical carrier to a modulator for uplink data modulation;
the modulator, configured to modulate uplink data of the first radio frequency unit to the second part of the first optical carrier to obtain the first uplink optical signal.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

18/504,180Filed 8 Nov 2023 · continuation

Priority

CN 202111651822.230 Dec 2021

Published

US 2024/0072896 A129 Feb 2024

Granted

18 Aug 2026

Term ends

Not estimatedThe source records don’t support an estimate.

Classification8 codes

H04B 10/2575
Arrangements specific to fibre transmission: radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier
H04J 14/02764
Optical medium access: multiplex arrangements for radio-frequency networks access; policies therefor
H04B 10/25753
Optical arrangements for wireless networks: distribution optical network, e.g. between a base station and a plurality of remote units
H04J 14/0205
Arrangements therefor: select and combine arrangements, e.g. with an optical combiner at the output after adding or dropping

Data transmission method, radio frequency unit, baseband unit, and communication system

Life of this patent

Data transmission method, radio frequency unit, baseband unit, and communication system

Life of this patent

Abstract

Claims7