Radio access technology (RAT) spectrum translator
Systems and methods described herein may introduce an intermediary device between radio access networks using a first spectrum and user equipment using a second spectrum. The intermediary device may process communication signals from either the first spectrum or the second spectrum into a format usable by the other of the first spectrum or the second spectrum. The intermediary device may be referred to as a multi-radio access technology (multi-RAT) translator.
1 . An electronic device comprising:
a receiver;
a transmitter; and
processing circuitry coupled to the receiver and the transmitter, the processing circuitry configured to
receive a signal from a base station having a first frequency in a first frequency spectrum at the receiver,
convert the signal from the first frequency to a second frequency in a second frequency spectrum, and
transmit the signal having the second frequency to user equipment using the transmitter based on a previously received scheduling data including a time shift from the user equipment, the scheduling data generated based on a Physical Downlink Control Channel (PDCCH) message directly received by the user equipment from the base station.
2 . The electronic device of claim 1 , wherein the first frequency spectrum comprises frequencies between 0.41 gigahertz (GHz) and 7.125 GHZ, and wherein the second frequency spectrum comprises frequencies between 24 GHz and 52.6 GHz.
3 . The electronic device of claim 1 , wherein the first frequency spectrum comprises frequencies between 0.41 gigahertz (GHz) and 7.125 GHz, and wherein the second frequency spectrum comprises frequencies between 100 GHz and 1000 GHz.
4 . The electronic device of claim 1 , wherein the processing circuitry is configured to convert the signal from the first frequency to the second frequency by performing an analog-to-digital conversion, a cyclic prefix (CP) removal operation, a demodulation operation, a modulation operation, a baseband digital processing operation, reference signal addition operation, a channel coding operation, or any combination thereof.
5 . The electronic device of claim 1 , wherein the processing circuitry is configured to convert the signal from the first frequency to the second frequency at least in part by
removing a first cyclic prefix (CP) of the signal to generate a first signal,
translating the first signal from the first frequency to the second frequency to generate a second signal, and
converting the second signal to an analog signal to generate the signal having the second frequency.
6 . The electronic device of claim 5 , wherein the processing circuitry is configured to translate the first signal from the first frequency to the second frequency by changing a carrier frequency of the first signal from the first frequency to the second frequency, the second frequency spectrum corresponding to frequency multiplexing operations.
7 . The electronic device of claim 5 , wherein the processing circuitry is configured to demodulate the first signal before translating the first signal to the second frequency.
8 . The electronic device of claim 1 , wherein the processing circuitry is configured to add a reference signal to the signal having the second frequency prior to transmission.
9 . The electronic device of claim 1 , wherein the processing circuitry is configured to convert a plurality of signals comprising the signal from a first number of layers to a second number of layers corresponding to the second frequency spectrum prior to transmission to the user equipment.
10 . A method comprising:
receiving, via a translator device configured to intercept communications between a base station and user equipment, an input signal from the base station via a first frequency spectrum;
generating, via the translator device, an output signal communicable on a second frequency spectrum based on the input signal;
receiving, via the translator device, scheduling data from the user equipment, the scheduling data including a time shift, the scheduling data generated based on a Physical Downlink Control Channel (PDCCH) message directly received by the user equipment from the base station; and
transmitting, via the translator device, the output signal to the user equipment via the second frequency spectrum based on the scheduling data.
11 . The method of claim 10 , comprising:
receiving, via the translator device, the input signal via an antenna;
converting, via the translator device, the input signal to a digital domain to generate a digital signal;
removing, via the translator device, a cyclic prefix associated with the digital signal to generate an intermediate signal;
demodulating, via the translator device, the intermediate signal to generate a second intermediate signal; and
translating, via the translator device, the second intermediate signal between the first frequency spectrum and the second frequency spectrum to generate the output signal communicable on the second frequency spectrum.
12 . The method of claim 11 , comprising adding, via the translator device, a reference signal associated with the second frequency spectrum to the output signal before transmitting via the second frequency spectrum.
13 . The method of claim 10 , wherein generating, via the translator device, the output signal comprises generating, via the translator device, the output signal communicable on the second frequency spectrum based on the input signal and a conversion from a spatial diversity data format to a frequency diversity data format.
14 . The method of claim 10 , wherein generating, via the translator device, the output signal comprises translating between a spatial multiplexing data format and a time multiplexing data format.
15 . A system comprising:
a first device configured to use a first frequency spectrum;
a second device configured to use a second frequency spectrum; and
an intermediary device coupled to the first device and the second device, the intermediary device configured to
receive a first signal having a first frequency of the first frequency spectrum from the first device,
generate a second signal having a second frequency of the second frequency spectrum from the first device based on the first signal,
receive scheduling data from the second device, the scheduling data including a time shift, the scheduling data generated based on a Physical Downlink Control Channel (PDCCH) message directly received by the second device from the first device, and
transmit the second signal to the second device based on the scheduling data.
16 . The system of claim 15 , wherein the second device is configured to use the second frequency spectrum and the first frequency spectrum, wherein the second device comprises first user equipment, and wherein the intermediary device comprises second user equipment.
17 . The system of claim 15 , wherein the second frequency spectrum comprises frequencies higher than the first frequency spectrum.
18 . The system of claim 15 , wherein the intermediary device is configured to generate the second signal having the second frequency based on adjusting the first signal to have a frequency diversity data format.
19 . The system of claim 15 , wherein the second device is configured to
receive the second signal having the second frequency of the second frequency spectrum, and
generate a down-converted signal having the first frequency of the first frequency spectrum based on the second signal.