Systems and methods for providing network indications for selecting asymmetric uplink (UL) antenna panels at user equipment (UE)
A method for wireless communication includes: receiving, at a base station: (1) a capability report for each of a plurality of antenna panels of a first user device; and (2) an initial antenna panel index for the first user device; transmitting, to the first user device, configuration information corresponding to each antenna panel of the plurality; selecting first configuration information corresponding to the antenna panel with the initial antenna panel index; and receiving a first uplink transmission from the first user device, wherein the first user device uses a selected first antenna panel corresponding to the initial antenna panel index and the first configuration information corresponding to the selected first antenna panel. In other aspects, rather than initially transmitting configuration information corresponding to each antenna panel, the base station may transmit the configuration information for each panel as it is selected by the first user device for an uplink transmission.
1. A method for communication in a wireless system, comprising:
receiving, at a base station: (1) a capability report for each of a plurality of antenna panels of a user device; and (2) an initial antenna panel index for the user device;
transmitting, from the base station, to the user device, configuration information corresponding to each antenna panel of the plurality of antenna panels of the user device;
selecting, at the base station, first configuration information corresponding to a first antenna panel of the user device with the initial antenna panel index; and
receiving, at the base station, a first uplink (UL) transmission from the user device, wherein the UL transmission is transmitted using the first antenna panel corresponding to the initial antenna panel index and the first configuration information, and
receiving, at the base station, a power headroom report (PHR) from the user device, wherein the PHR corresponds to a second antenna panel, wherein a gap between a maximum transmission power of the second antenna panel and the first antenna panel is larger than a threshold.
2. The method of claim 1 , further comprising:
selecting, at the base station, second configuration information corresponding to the second antenna panel of the user device; and
receiving, at the base station, a second UL transmission from the user device, wherein the user device uses the second antenna panel and the second configuration information corresponding to the second antenna panel.
3. The method of claim 1 , wherein receiving the PHR at the base station further comprises the base station performing at least one of the following operations:
receiving the PHR any time the first user device selects a new antenna panel; or
receiving a virtual PHR for one or more inactive antenna panels of the user device.
4. The method of claim 1 , wherein the capability report for each of a plurality of antenna panels of the user device comprises an indication of at least one of the following properties of the user device:
a maximum number of SRS resources available for beam management;
a maximum number of Rx/Tx beams;
whether the user device can support uplink full power transmission;
for any supported uplink full power transmission mode, the parameters for such mode;
a maximum number of ports available per SRS resource;
an uplink codebook subset;
a maximum number of layers available for uplink transmission; or
a supported SRS for an antenna switching configuration.
5. A base station comprising:
one or more antenna panels;
a radio operably coupled to the one or more antenna panels; and
a processor operably coupled to the radio;
wherein the base station is configured to:
receive: (1) a capability report for each of a plurality of antenna panels of a user device; and (2) an initial antenna panel index for the user device;
transmit, to the user device, configuration information corresponding to a first antenna panel of the user device with the initial antenna panel index;
select configuration information corresponding to the antenna panel of the user device with the initial antenna panel index; and
receive a first uplink (UL) transmission from the user device, wherein the UL transmission is transmitted using the first antenna panel corresponding to the initial antenna panel index and the first configuration information, and
receiving, at the base station, a power headroom report (PHR) from the user device, wherein the PHR corresponds to a second antenna panel, wherein a gap between a maximum transmission power of the second antenna panel and the first antenna panel is larger than a threshold.
6. The base station of claim 5 , wherein the base station is further configured to:
select second configuration information corresponding to the second antenna panel of the user device;
transmit, to the user device, configuration information corresponding to the second antenna panel of the user device;
receive a second UL transmission from the user device, wherein the user device uses the second antenna panel and the second configuration information corresponding to the second antenna panel.
7. The base station of claim 6 , wherein receiving the PHR at the base station further comprises the base station being configured to perform at least one of the following operations:
receive the PHR any time the user device selects a new antenna panel; or
receive a virtual PHR for one or more inactive antenna panels of the user device.
8. The base station of claim 5 , wherein the capability report for each of a plurality of antenna panels of the user device comprises an indication of at least one of the following properties of the user device:
a maximum number of SRS resources available for beam management;
a maximum number of Rx/Tx beams;
whether the user device can support uplink full power transmission;
for any supported uplink full power transmission mode, the parameters for such mode;
a maximum number of ports available per SRS resource;
an uplink codebook subset;
a maximum number of layers available for uplink transmission; or
a supported SRS for an antenna switching configuration.
9. An integrated circuit, comprising circuitry configured to cause a base station to:
receive: (1) a capability report for each of a plurality of antenna panels of a user device; and (2) an initial antenna panel index for the user device;
transmit, to the user device, configuration information corresponding to each antenna panel of the plurality of antenna panels of the user device;
select first configuration information corresponding to a first antenna panel of the user device with the initial antenna panel index; and
receive a first uplink (UL) transmission from the user device, wherein the UL transmission is transmitted using the first antenna panel corresponding to the initial antenna panel index and the first configuration information, and
receiving, at the base station, a power headroom report (PHR) from the user device, wherein the PHR corresponds to a second antenna panel, wherein a gap between a maximum transmission power of the second antenna panel and the first antenna panel is larger than a threshold.
10. The integrated circuit of claim 9 , wherein the circuitry is further configured to cause the base station to:
select second configuration information corresponding to the second antenna panel of the user device; and
receive a second UL transmission from the user device, wherein the user device uses the second antenna panel and the second configuration information corresponding to the second antenna panel.
11. The integrated circuit of claim 10 , wherein receiving the PHR at the base station further comprises the circuitry being further configured to cause the base station to perform at least one of the following operations:
receive the PHR any time the user device selects a new antenna panel; or
receive a virtual PHR for one or more inactive antenna panels of the user device.
12. The integrated circuit of claim 9 , wherein the capability report for each of a plurality of antenna panels of the user device comprises an indication of at least one of the following properties of the user device:
a maximum number of SRS resources available for beam management;
a maximum number of Rx/Tx beams;
whether the user device can support uplink full power transmission;
for any supported uplink full power transmission mode, the parameters for such mode;
a maximum number of ports available per SRS resource;
an uplink codebook subset;
a maximum number of layers available for uplink transmission; or
a supported SRS for an antenna switching configuration.