Transmission and reception via antenna module combining
Aspects are directed to an apparatus for wireless communication. In some examples, the apparatus includes one or more memories, individually or in combination, having instructions. In some examples, the apparatus includes one or more processors, individually or in combination, configured to execute the instructions. In some examples, the one or more processors may be configured to obtain an indication of resources. In some examples, the one or more processors may be configured to output an aggregated signal for transmission via a plurality of antenna modules using the indicated resources, wherein the aggregated signal is associated with a first beamformed signal configured for transmission via a first antenna module of the plurality of antenna modules and a second beamformed signal configured for transmission via a second antenna module of the plurality of antenna modules.
1 . An apparatus for wireless communication, comprising:
a plurality of antenna modules;
at least one transceiver coupled to the plurality of antenna modules;
one or more memories, individually or in combination, having instructions; and
one or more processors, individually or in combination, configured to execute the instructions to cause the apparatus to:
receive, via the at least one transceiver, an indication of resources;
estimate a maximum transmission power associated with an aggregated signal, wherein the aggregated signal is associated with a first beamformed signal configured for transmission via a first antenna module of the plurality of antenna modules and a second beamformed signal configured for transmission via a second antenna module of the plurality of antenna modules; and
transmit, via the at least one transceiver, the aggregated signal via the indicated resources and using beam weights associated with the plurality of antenna modules and using the estimated maximum transmission power.
2 . The apparatus of claim 1 , wherein the aggregated signal is a combination of the first beamformed signal and the second beamformed signal configured to be transmitted at a same frequency, and wherein the combination is one of: a baseband combination of the first beamformed signal and the second beamformed signal, or an intermediate frequency (IF) combination of the first beamformed signal and the second beamformed signal.
3 . The apparatus of claim 1 , wherein the first beamformed signal is defined by a first beam direction, wherein the second beamformed signal is defined by a second beam direction different from the first beam direction, and wherein the aggregated signal is also transmitted in a common direction.
4 . The apparatus of claim 1 , wherein each of a first beam direction of the first beamformed signal and a second beam direction of the second beamformed signal is a static codebook beam direction if the estimated maximum transmission power satisfies a threshold value, and wherein each of the first beam direction and the second beam direction is associated with an adaptive beam weight corresponding to non-codebook-based beamforming if the estimated maximum transmission power does not satisfy the threshold value.
5 . The apparatus of claim 4 , wherein the one or more processors are further configured to cause the apparatus to:
transmit, via the at least one transceiver, an indication of whether the estimated maximum transmission power satisfies the threshold value; and
receive, via the at least one transceiver, at least one reference signal after transmitting the indication that the estimated maximum transmission power does not satisfy the threshold value.
6 . The apparatus of claim 5 , wherein the one or more processors are further configured to cause the apparatus to:
measure the at least one reference signal; and
identify the adaptive beam weight after measuring the at least one reference signal.
7 . The apparatus of claim 1 , wherein the one or more processors are further configured to cause the apparatus to:
transmit, via the at least one transceiver, an indication of a capability of the apparatus to transmit the aggregated signal.
8 . The apparatus of claim 1 ,
wherein the apparatus is configured to operate as a user equipment (UE).
9 . An apparatus for wireless communication, comprising:
a plurality of antenna modules;
at least one transceiver coupled to the plurality of antenna modules;
one or more memories, individually or in combination, having instructions; and
one or more processors, individually or in combination, configured to execute the instructions to cause the apparatus to:
receive, via the at least one transceiver, an indication of a capability of a wireless node to transmit an aggregated signal via a plurality of antenna modules of the wireless node, wherein the indication of the capability of the wireless node comprises an indication of whether a maximum transmission power of the aggregated signal satisfies a threshold value; and
transmit, via the at least one transceiver, at least one reference signal after receiving the indication of the capability of the wireless node, the at least one reference signal being transmitted to assist the wireless node to determine updated beam weights to improve the maximum transmission power of the aggregated signal.
10 . The apparatus of claim 9 , wherein the at least one reference signal is transmitted if the maximum transmission power does not satisfy the threshold value.
11 . The apparatus of claim 9 ,
wherein the apparatus is configured to operate as a network entity.
12 . A method for wireless communication by a wireless node, comprising:
receiving an indication of resources;
estimating a maximum transmission power associated with an, wherein the aggregated signal is associated with a first beamformed signal configured for transmission via a first antenna module of a plurality of antenna modules of the wireless node and a second beamformed signal configured for transmission via a second antenna module of the plurality of antenna modules; and
transmitting, via the at least one transceiver, the aggregated signal via the indicated resources and using beam weights associated with the plurality of antenna modules and using the estimated maximum transmission power.
13 . The method of claim 12 , wherein the aggregated signal is a combination of the first beamformed signal and the second beamformed signal configured to be transmitted at a same frequency, and wherein the combination is one of: a baseband combination of the first beamformed signal and the second beamformed signal, or an intermediate frequency (IF) combination of the first beamformed signal and the second beamformed signal.
14 . The method of claim 12 , wherein the first beamformed signal is also defined by a first beam direction, wherein the second beamformed signal is defined by a second beam direction different from the first beam direction, and wherein the aggregated signal is also transmitted in a common direction.
15 . The method of claim 12 , wherein each of a first beam direction of the first beamformed signal and a second beam direction of the second beamformed signal is a static codebook beam direction if the estimated maximum transmission power satisfies a threshold value, and wherein each of the first beam direction and the second beam direction is associated with an adaptive beam weight corresponding to non-codebook-based beamforming if the estimated maximum transmission power does not satisfy the threshold value.
16 . The method of claim 15 , further comprising:
transmitting, via the at least one transceiver, an indication of whether the estimated maximum transmission power satisfies the threshold value; and
receiving, via the at least one transceiver, at least one reference signal after transmitting the indication that the estimated maximum transmission power does not satisfy the threshold value.
17 . The method of claim 16 , further comprising:
measuring the at least one reference signal; and
identifying the adaptive beam weight after measuring the at least one reference signal.