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US 11,601,247 B2Granted
Sounding reference signal switching
AssigneeSkyworks Solutions, Inc.
InventorsDominique Michel Yves Brunel, Laurent Noel
Life of this patent
Estimating the term…
Abstract
Apparatus and methods for sounding reference signal (SRS) switching are provided. In certain embodiments, transmit path resources of user equipment (UE) are used to reduce or eliminate the impairment of SRS upon transport capacity. Furthermore, the transmit path resources can be used for other purposes, and thus SRS switching time can be reduced by re-using transmit path resources that may be included for other purposes. The teachings herein can be used to achieve SRS switching of 0 μs, thereby eliminating the impact of switching timing constraints for SRS symbols on transport capacity.
Claims20
A mobile device comprising:
- a plurality of antennas including a first antenna, a second antenna, a third antenna, and a fourth antenna;
- a front end system including a first power amplifier, a second power amplifier, and a first multi-throw switch configured to selectively connect an output of the second power amplifier to the second antenna, the third antenna, or the fourth antenna;
- and
- a baseband system configured to generate a first sequence of symbols for transmission by way of the first power amplifier and the first antenna and a second sequence of symbols for transmission by way of the second power amplifier and the first multi-throw switch, the baseband system further configured to stagger transmission of the first sequence of symbols and the second sequence of symbols, and to include a plurality of sounding reference signal symbols as part of the first sequence of symbols and the second sequence of symbols, the plurality of sounding reference signal symbols including a first sounding reference signal symbol transmitted on the second antenna, a second sounding reference signal symbol transmitted on the third antenna, a third sounding reference signal symbol transmitted on the fourth antenna, and a fourth sounding reference signal symbol transmitted on the first antenna.
1 more element
A method of sounding reference signal switching in a mobile device, the method comprising:
- transmitting a first sequence of symbols by way of a first power amplifier and a first antenna;
- transmitting a second sequence of symbols by way of a second power amplifier and a first multi-throw switch that selectively connects an output of the second power amplifier to a second antenna, a third antenna, or a fourth antenna;
- staggering symbol transmissions of the second sequence of symbols with respect to the first sequence of symbols;
- and
- transmitting a plurality of sounding reference signal symbols as part of the first sequence of symbols and the second sequence of symbols, the plurality of sounding reference signal symbols including a first sounding reference signal symbol transmitted on the second antenna, a second sounding reference signal symbol transmitted on the third antenna, a third sounding reference signal symbol transmitted on the fourth antenna, and a fourth sounding reference signal symbol transmitted on the first antenna.
2 more elements
A communication system comprising:
- a plurality of antennas including a first antenna, a second antenna, a third antenna, and a fourth antenna;
- a first transmit chain including a first power amplifier;
- a second transmit chain including a second power amplifier and a first multi-throw switch that selectively connects an output of the second power amplifier to the second antenna, the third antenna, or the fourth antenna;
- and
- a baseband system configured to generate a first sequence of symbols for transmission by way of the first transmit chain, and a second sequence of symbols for transmission by way of the second transmit chain, the baseband system further configured to stagger transmission of the first sequence of symbols and the second sequence of symbols, and to include a plurality of sounding reference signal symbols as part of the first sequence of symbols and the second sequence of symbols, the plurality of sounding reference signal symbols including a first sounding reference signal symbol transmitted on the second antenna, a second sounding reference signal symbol transmitted on the third antenna, a third sounding reference signal symbol transmitted on the fourth antenna, and a fourth sounding reference signal symbol transmitted on the first antenna.
2 more elements
Dependencies are inferred from the claim text.