Tdd (time division duplex) radio configuration for reduction in transmit and receive path resources

Patent metadata

Field	Value
Publication number	US-2022271908-A1
Application number	US-202117179576-A
Country	US
Kind code	A1
Filing date	Feb 19, 2021
Priority date	Feb 19, 2021
Publication date	Aug 25, 2022
Grant date	—

Abstract

Apparatuses, methods, and systems for a TDD (time division duplex) radio configuration for reduction in transmit and receive path resources are disclosed. One system includes an RF system on a chip (RFSOC) comprising baseband communication circuitry and frequency upconverters for transmit wireless signals and frequency downconverters for received wireless signals, a transmit switch receiving a plurality of transmit signals from the RFSOC through single transmit line, and operative to connect each of the plurality of transmit signals to a one of a plurality of antennas, one at a time, continuously over time, and a receive switch receiving a plurality of receive signals from the plurality of antennas, and operative to connect each of the plurality of receive signals to the RFSOC on a single receive line, one at a time, continuously over time, wherein each antenna of the plurality of antennas is either transmitting or receiving.

First claim

What is claimed:

1 . A system, comprising:
an RF system on a chip (RFSOC) comprising baseband communication circuitry and frequency upconverters for transmit wireless signals and frequency downconverters for received wireless signals; a transmit switch receiving a plurality of transmit signals from the RFSOC through single transmit line, and operative to connect each of the plurality of transmit signals to a one of a plurality of antennas, one at a time, continuously over time; and a receive switch receiving a plurality of received signals from the plurality of antennas, and operative to connect each of the plurality of received signals to the RFSOC on a single receive line, one at a time, continuously over time; wherein each antenna of the plurality of antennas is either transmitting or receiving.

2 . The system of claim 1 , further comprising a first antenna module comprising:
a circulator configured to couple a first transmit signal of the transmit switch to a first antenna of the plurality of antennas, and couple a first received signal of the first antenna of the plurality of antennas to a first module switch; the first module switch configured to connect an input to the first module switch to a matched impedance during a first period of time, and connect the first received signal of the first antenna of the plurality of antennas to the receive switch during a second period of time.

3 . The system of claim 2 , further comprising a second antenna module comprising:
a second circulator configured to couple a second transmit signal of the transmit switch to a second antenna of the plurality of antennas, and couple a second received signal of the second antenna of the plurality of antennas to a second module switch; the second module switch configured to connect an input to the second module switch to a matched impedance during the second period of time, and connect the second received signal of the second antenna of the plurality of antennas to the receive switch during the first period of time.

4 . The system of claim 3 , wherein the transmit switch is configured to connect the first transmit signal to the first antenna through the first antenna module during the first period, and configured to connect the second transmit signal to the second antenna through the second antenna module during the second period.

5 . The system of claim 3 , wherein the receive switch is configured to connect the first received signal of the second module to the RFSOC to during the first period, and configured to connect the second received signal of the first antenna module to the RFSOC during the second period.

6 . The system of claim 1 , further comprising:
a plurality of transmit switches including the transmit switch; a plurality of receive switches including the receive switch; one or more transmit multiplexers; one or more receive multiplexers; wherein each of the one or more transmit multiplexers receive transmit signals from the RFSOC through a single transmit line and generates transmit signals for a sub-plurality of the plurality of transmitter switches through multiple transmit lines, wherein the transmit signals include multiple transmission frequency bands; and wherein each of the one or more receive multiplexers receive received signals from a sub-plurality of the plurality of receiver switches through multiple receive lines and provides the received signals to the RFSOC through a single receive line, wherein the received signals include multiple receive frequency bands.

7 . The system of claim 6 , wherein the RFSOC is operable at a high enough frequency to process the transmit signals having the multiple frequency bands and the received signals having the multiple frequency bands.

8 . The system of claim 6 , wherein the transmit signals generate a separate transmission beam for each of the multiple transmission frequency bands, and a corresponding one of the multiple receive frequency bands.

9 . The system of claim 6 , wherein each of the transmit multiplexers include electronic circuitry for frequency matching at each of the multiple transmission frequency bands.

10 . The system of claim 6 , wherein each of the receive multiplexers include electronic circuitry for frequency matching at each of the multiple received frequency bands.

11 . The system of claim 6 , wherein each of the multiple transmission frequency bands has a corresponding one of the multiple receive frequency bands.

12 . The system of claim 6 , wherein the system comprises more transmit multiplexers than receive multiplexers when the system is configured to transmit wireless communication a majority of time, and wherein the system comprises more receive multiplexers than transmit multiplexers when the system is configured to receive wireless communication a majority of time.

13 . The system of claim 11 , wherein a one of the transmitter switches operates to transmit a wireless signal through one of the multiple transmission frequency band simultaneous with a one of the receiver switches operating to receive a wireless signal through one of the multiple receive frequency bands.

14 . A method, comprising:
frequency upconverting and frequency down-converting, by an RF system on a chip (RFSOC), transmit and received wireless signals; receiving, by a transmit switch, a plurality of transmit signals from the RFSOC through single transmit line, connecting each of the plurality of transmit signals to a one of a plurality of antennas, one at a time, continuously over time; and receiving, by a receive switch, a plurality of received signals from the plurality of antennas, and connecting each of the plurality of received signals to the RFSOC on a single receive line, one at a time, continuously over time; wherein each antenna of the plurality of antennas is either transmitting or receiving.

15 . The method of claim 14 , further comprising:
coupling, by a circulator of a first antenna module, a first transmit signal of the transmit switch to a first antenna of the plurality of antennas, and coupling, by the circulator, a first received signal of the first antenna of the plurality of antennas to a first module switch; connecting, by the first module switch, an input to the first module switch to a matched impedance during a first period of time, and connecting, by the first module switch, the first received signal of the first antenna of the plurality of antennas to the receive switch during a second period of time.

16 . The method of claim 15 , further comprising:
coupling, by a second circulator of a second antenna module, a second transmit signal of the transmit switch to a second antenna of the plurality of antennas, and coupling, by the second circulator, a second received signal of the second antenna of the plurality of antennas to a second module switch; connecting, by the second module switch, an input to the second module switch to a matched impedance during the second period of time, and connecting, by the second module switch, the second received signal of the second antenna of the plurality of antennas to the receive switch during the first period of time.

17 . The method of claim 16 , wherein the transmit switch is configured to connect the first transmit signal to the first antenna through the first antenna module during the first period, and configured to connect the second transmit signal to the second antenna through the second antenna module during the second period.

18 . The method system of claim 17 , wherein the receive switch is

Assignees

• Meta Platforms Inc

Inventors

• Engala Kodanda Ram Reddy
• Tabatabai Farbod
• Shehab Imad

Classifications

• H04B1/38 Primary

  Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving · CPC title

• H04B1/40

  Circuits · CPC title

• H04B1/44

  Transmit/receive switching · CPC title

• H04L5/14 Primary

  Two-way operation using the same type of signal, i.e. duplex · CPC title