Back to results
US 11,601,166 B2Granted
Antenna switching on MIMO devices
AssigneeMagic Leap, Inc.
InventorShurhabeel Zamir Seyed
Life of this patent
Estimating the term…
Abstract
A multiple-input, multiple-output (MIMO) transceiver comprises a plurality of RF chains, a plurality of antennas, a plurality of switching components, and control circuitry operatively coupled to the plurality of switching components. In some examples, a total quantity of RF chains included in the plurality of RF chains is equal to a first value, and a total quantity of antennas included in the plurality of antennas is equal to a second value that is less than the first value.
Claims15
A multiple-input, multiple-output (MIMO) transceiver, comprising:
- a plurality of RF chains;
- a plurality of antennas;
- a plurality of switching components;
- and
- a control circuitry operatively coupled to the plurality of switching components;
- wherein a total quantity of RF chains included in the plurality of RF chains is equal to a first value, and a total quantity of antennas included in the plurality of antennas is equal to a second value that is less than the first value;
- wherein the plurality of RF chains comprises:
- a first plurality of RF chains comprising electronics configured to support communication on a first RF band;
- and
- a second plurality of RF chains comprising electronics configured to support communication on a second RF band;
- and
- wherein the plurality of antennas comprises:
- a first antenna configured to communicate on the first RF band;
- a second antenna configured to communicate on a second RF band different from the first RF band;
- and
- a third antenna configured to communicate on the first and second RF bands;
- wherein the plurality of switching components comprises a first switching component electrically coupled to two of the first plurality of RF chains, the first antenna, and the third antenna;
- and
- wherein the plurality of switching components further comprises a second switching component electrically coupled to two of the second plurality of RF chains, the second antenna, and the third antenna.
16 more elements
A communication device, comprising six antennas, eight receive chains, and four transmit chains;
- wherein the six antennas comprise:
- two first-band antennas, including a first first-band antenna and a second first-band antenna, configured for communication in a first frequency band;
- two second-band antennas, including a first second-band antenna and a second second-band antenna, configured for communication in a second frequency band;
- and
- two dual-band antennas, including a first dual-band antenna and a second dual-band antenna, configured for communication in both the first frequency band and second frequency band;
- wherein the eight receive chains comprise:
- four first-band receive chains, including first, second, third, and fourth first-band receive chains, configured for receiving signals in the first frequency band, each one of the four first-band receive chains being switchably coupled to a respective one of the two first-band antennas and the two dual-band antennas;
- and
- four second band receive chains, including first, second, third, and fourth second-band receive chains, configured for receiving signals in the second frequency band, each one of the four second-band receive chains being switchably coupled to a respective one of the two second-band antennas and the two dual-band antennas;
- wherein the four transmit chains comprise:
- two first-band transmit chains, including a first first-band transmit chain and a second first-band transmit chain, configured for transmitting signals in the first frequency band, each one of the two first-band transmit chains being switchably coupled to one of the two first-band antennas or a first one of the two dual-band antennas;
- and
- two second-band transmit chains, including a first second-band transmit chain and a second second-band transmit chain, configured for transmitting signals in the second frequency band, each one of the two second-band transmit chains being switchably coupled to one of the two second-band antennas or a second one of the two dual-band antennas.
10 more elements
A method for wireless communication, the method comprising:
- providing a communication device having four first-band receive chains, four second-band receive chains, two first-band transmit chains, two second-band transmit chains, and six antennas, wherein the six antennas comprise two first-band antennas, two second-band antennas, and two dual-band antennas, the two dual-band antennas being configured to operate in the first-band and the second-band;
- performing 4×4 MIMO (multiple-input multiple-output) down link (DL) communication with a base station, in the first and second frequency bands with carrier aggregation (CA);
- performing 2×2 MIMO up link (UL) communication with the base station, in the first and second frequency bands, in TDD (time division duplexing);
- coupling the transmit chains and the receive chains to the antennas using four 2P2T switches and two diplexers;
- and
- performing up link antenna switching to connect a given transmit chain to one of two antennas based on a signal from the base station according to a 2T4R (two transmitter and four receiver) SRS (sounding reference signal) protocol.
3 more elements
Dependencies are inferred from the claim text.