Rank control for mitigating reference signal impact with antenna sharing

A method of wireless communication performed by a user equipment (UE), comprising:

• receiving an uplink reference signal configuration indicating antenna switching for transmitting an uplink reference signal of a first radio access technology (RAT);
• reporting a rank for a downlink communication of a second RAT, wherein the rank is less than or equal to an upper bound associated with receiving the downlink communication while the antenna switching is performed;
• transmitting the uplink reference signal of the first RAT according to the antenna switching;
• and
• receiving the downlink communication of the second RAT during the antenna switching.

A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising:

• one or more instructions that, when executed by one or more processors of a user equipment (UE), cause the UE to:
• receive an uplink reference signal configuration indicating antenna switching for transmitting an uplink reference signal of a first radio access technology (RAT);
• report a rank for a downlink communication of a second RAT, wherein the rank is less than or equal to an upper bound associated with receiving the downlink communication while the antenna switching is performed;
• transmit the uplink reference signal of the first RAT according to the antenna switching;
• and
• receive the downlink communication of the second RAT during the antenna switching.

An apparatus for wireless communication, comprising:

• means for receiving an uplink reference signal configuration indicating antenna switching for transmitting an uplink reference signal of a first radio access technology (RAT);
• means for reporting a rank for a downlink communication of a second RAT, wherein the rank is less than or equal to an upper bound associated with receiving the downlink communication while the antenna switching is performed;
• means for transmitting the uplink reference signal of the first RAT according to the antenna switching;
• and
• means for receiving the downlink communication of the second RAT during the antenna switching.