RFFE for dual connectivity
First Claim
Patent Images
1. A telecommunication device comprising:
- one or more processors configured to receive uplink data and split the uplink data into a first data stream associated with a first radio access technology and a second data stream associated with a second radio access technology; and
a radio frequency (RF) front end comprising;
a first power amplifier that amplifies a first RF transmit signal to create a first amplified RF transmit signal for transmission by a first antenna, wherein the first RF transmit signal represents at least a portion of the first data stream and is formatted and transmitted in accordance with the first radio access technology;
a second power amplifier that amplifies a second RF transmit signal to create a second amplified RF transmit signal for transmission by a second antenna concurrently with the transmission of the first RF transmit signal by the first antenna, wherein the second RF transmit signal represents at least a portion of the second data stream and is formatted and transmitted in accordance with the second radio access technology;
a first signal amplifier that amplifies a first RF receive signal from the first antenna to create a first amplified RF receive signal;
a first signal splitter that processes the first RF receive signal to produce a first main RF signal and a first diversity RF signal, wherein the first main RF signal represents data in accordance with the first radio access technology and the first diversity RF signal represents data in accordance with the second radio access technology;
a second signal amplifier that amplifies a second RF receive signal from the second antenna to create a second amplified RF receive signal; and
a second signal splitter that processes the second amplified RF receive signal to produce a second main RF signal and a second diversity RF signal, wherein the second main RF signal represents data in accordance with the second radio access technology and the second diversity RF signal represents data in accordance with the first radio access technology,wherein the one or more processors are further configured to;
receive the first main RF signal, the first diversity RF signal, the second main RF signal, and the second diversity RF signal,generate, from the first main RF signal and the second diversity RF signal, a first processed RF signal representing data in accordance with the first radio access technology,generate, from the second main RF signal and the first diversity RF signal, a second processed RF signal representing data in accordance with the second radio access technology, andaggregate the data represented by the first processed RF signal and the data represented by the second processed RF signal to create a data stream.
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Abstract
A radio frequency front end (RFFE) is configured to support dual connectivity communications, in which two different radio access technologies such as LTE and NR are used simultaneously for uplink communications from a wireless communications device to a base station. The RFFE has two channels and two respectively associated antennas. The first channel transmits an NR signal from the first antenna. The second channel transmits an LTE signal from the second antenna. For reception, the first channel produces a main NR receive signal and LTE diversity signal. The second channel produces a main LTE receive signal and an NR diversity signal.
12 Citations
20 Claims
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1. A telecommunication device comprising:
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one or more processors configured to receive uplink data and split the uplink data into a first data stream associated with a first radio access technology and a second data stream associated with a second radio access technology; and a radio frequency (RF) front end comprising; a first power amplifier that amplifies a first RF transmit signal to create a first amplified RF transmit signal for transmission by a first antenna, wherein the first RF transmit signal represents at least a portion of the first data stream and is formatted and transmitted in accordance with the first radio access technology; a second power amplifier that amplifies a second RF transmit signal to create a second amplified RF transmit signal for transmission by a second antenna concurrently with the transmission of the first RF transmit signal by the first antenna, wherein the second RF transmit signal represents at least a portion of the second data stream and is formatted and transmitted in accordance with the second radio access technology; a first signal amplifier that amplifies a first RF receive signal from the first antenna to create a first amplified RF receive signal; a first signal splitter that processes the first RF receive signal to produce a first main RF signal and a first diversity RF signal, wherein the first main RF signal represents data in accordance with the first radio access technology and the first diversity RF signal represents data in accordance with the second radio access technology; a second signal amplifier that amplifies a second RF receive signal from the second antenna to create a second amplified RF receive signal; and a second signal splitter that processes the second amplified RF receive signal to produce a second main RF signal and a second diversity RF signal, wherein the second main RF signal represents data in accordance with the second radio access technology and the second diversity RF signal represents data in accordance with the first radio access technology, wherein the one or more processors are further configured to; receive the first main RF signal, the first diversity RF signal, the second main RF signal, and the second diversity RF signal, generate, from the first main RF signal and the second diversity RF signal, a first processed RF signal representing data in accordance with the first radio access technology, generate, from the second main RF signal and the first diversity RF signal, a second processed RF signal representing data in accordance with the second radio access technology, and aggregate the data represented by the first processed RF signal and the data represented by the second processed RF signal to create a data stream. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A wireless communication device, comprising:
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first and second antennas; a radio frequency (RF) processor that (a) determines, from received data, a first data stream comprising first data in accordance with a first radio access technology and a second data stream comprising second data in accordance with a second radio access technology and (b) simultaneously provides first and second RF transmit signals, wherein the first RF transmit signal represents the first data stream and the second RF transmit signal represents the second data stream; a first power amplifier that amplifies the first RF transmit signal to create a first amplified RF transmit signal for transmission from the first antenna; and a second power amplifier that amplifies the second RF transmit signal to create a second amplified RF transmit signal for transmission from the second antenna concurrently with transmission of the first amplified RF transmit signal from the first antenna. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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15. A method performed by a telecommunication device, comprising:
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receiving uplink data to be transmitted to one or more wireless base stations; simultaneously (a) transmitting a first transmit signal using a first antenna, and (b) transmitting a second transmit signal using a second antenna, wherein the first transmit signal represents a first portion of the uplink data in accordance with a first radio access technology and the second transmit signal represents a second portion of the uplink data in accordance with a second radio access technology; receiving a first RF receive signal from the first antenna; processing the first RF receive signal to produce a first main RF signal and a first diversity RF signal, wherein the first main RF signal represents first data in accordance with the first radio access technology and the first diversity RF signal represents second data in accordance with the second radio access technology; receiving a second RF receive signal from the second antenna; and processing the second RF receive signal to produce a second main RF signal and a second diversity RF signal, wherein the second main RF signal represents third data in accordance with the second radio access technology and the second diversity RF signal represents fourth data in accordance with the first radio access technology. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification