Techniques for beam shaping for in-band interference mitigation in large bandwidth millimeter wave systems
Methods, systems, and devices for wireless communications are described. A first base station may receive, from a plurality of user equipments (UEs), a plurality of uplink signals that include feedback information for the plurality of UEs. A first UE of the plurality of UEs may be associated with the first base station and a second UE of the plurality of UEs may be associated with a second base station. The first base station may modify a plurality of sets of beam weights for a plurality of downlink signals, where each modified set of beam weights corresponds to a respective downlink signal of the plurality of downlink signals. The first base station may transmit, to the first UE, a first downlink signal of the plurality of downlink signals using a first modified set of beam weights of the of the plurality of sets of beam weights.
1. A method for wireless communication at a user equipment (UE) associated with a first network device, comprising:
receiving, from the first network device based at least in part on a first set of beam weights, a control signal requesting feedback information, wherein the control signal is associated with a second network device; and
transmitting, to the first network device in response to receiving the control signal, a feedback signal comprising a signal to interference and noise ratio (SINR) and location information for the UE, the feedback signal being associated with the second network device.
2. The method of claim 1 , further comprising:
receiving, from the first network device, a downlink signal according to a second set of beam weights different from the first set of beam weights, wherein the second set of beam weights is based at least in part on the feedback signal.
3. The method of claim 1 , further comprising:
receiving, from the first network device, a global navigation satellite systems (GNSS) signal, wherein the location information is based at least in part on the GNSS signal.
4. The method of claim 1 , further comprising:
receiving, from the first network device, a terrestrial beacon system (TBS) signal, wherein the location information is based at least in part on the TBS signal.
5. The method of claim 1 , wherein the feedback signal is associated with the second network device in accordance with the feedback signal being generated based at least in part on a downlink signal received from the second network device.
6. A method for wireless communication at a first network device, comprising:
receiving, from a plurality of user equipments (UEs), a plurality of uplink signals comprising feedback information for the plurality of UEs, the feedback information comprising a signal to interference and noise ratio (SINR) and location information for each UE of the plurality of UEs, wherein a first UE of the plurality of UEs is associated with the first network device and a second UE of the plurality of UEs is associated with a second network device;
modifying, based at least in part on the feedback information comprising the SINR and the location information for each UE of the plurality of UEs, a plurality of sets of beam weights for a plurality of downlink signals, each modified set of beam weights of the plurality of sets of beam weights corresponding to a respective downlink signal of the plurality of downlink signals; and
transmitting, to the first UE, a first downlink signal of the plurality of downlink signals using a first modified set of beam weights of the plurality of sets of beam weights.
7. The method of claim 6 , further comprising:
transmitting, to one or more UEs of the plurality of UEs, a first feedback information request signal, wherein receiving the plurality of uplink signals comprising the feedback information is based at least in part on the first feedback information request signal.
8. The method of claim 6 , further comprising:
transmitting, to the second network device, a second feedback information request signal associated with one or more UEs of the plurality of UEs, wherein receiving the plurality of uplink signals comprising the feedback information is based at least in part on the second feedback information request signal.
9. The method of claim 6 , further comprising:
determining an angle of arrival spread corresponding to a dominant cluster or path of a first uplink signal of the plurality of uplink signals, wherein modifying the plurality of sets of beam weights is based at least in part on the angle of arrival spread, and wherein modifying the plurality of sets of beam weights comprises mitigating a side lobe level associated with an interference condition associated with the second UE of the plurality of UEs.
10. The method of claim 6 , further comprising:
determining, based at least in part on the feedback information, an interference condition associated with the second UE of the plurality of UEs, wherein modifying the plurality of sets of beam weights is based at least in part on the interference condition, and wherein modifying the plurality of sets of beam weights comprises mitigating a side lobe level associated with the interference condition.
11. The method of claim 6 , further comprising:
receiving, from the first UE of the plurality of UEs, a first uplink signal of the plurality of uplink signals in a radio frequency spectrum region; and
receiving, from the second UE of the plurality of UEs, a second uplink signal of the plurality of uplink signals in the radio frequency spectrum region.
12. The method of claim 6 , wherein the plurality of uplink signals comprise at least one beam change request.
13. An apparatus for wireless communication at a user equipment (UE) associated with a first network device, comprising:
a processor;
memory coupled with the processor; and
instructions stored in the memory and executable by the processor to cause the apparatus to:
receive, from the first network device based at least in part on a first set of beam weights, a control signal requesting feedback information, wherein the control signal is associated with a second network device; and
transmit, to the first network device in response to receiving the control signal, a feedback signal comprising a signal to interference and noise ratio (SINR) and location information for the UE, the feedback signal being associated with the second network device.
14. The apparatus of claim 13 , wherein the instructions are further executable by the processor to cause the apparatus to:
receive, from the first network device, a downlink signal according to a second set of beam weights different from the first set of beam weights, wherein the second set of beam weights is based at least in part on the feedback signal.
15. The apparatus of claim 13 , wherein the instructions are further executable by the processor to cause the apparatus to:
receive, from the first network device, a global navigation satellite systems (GNSS) signal, wherein the location information is based at least in part on the GNSS signal.
16. The apparatus of claim 13 , wherein the instructions are further executable by the processor to cause the apparatus to:
receive, from the first network device, a terrestrial beacon system (TBS) signal, wherein the location information is based at least in part on the TBS signal.
17. An apparatus for wireless communication at a first network device, comprising:
a processor;
memory coupled with the processor; and
instructions stored in the memory and executable by the processor to cause the apparatus to:
receive, from a plurality of user equipments (UEs), a plurality of uplink signals comprising feedback information for the plurality of UEs, wherein a first UE of the plurality of UEs is associated with the first network device and a second UE of the plurality of UEs is associated with a second network device;
modify a plurality of sets of beam weights for a plurality of downlink signals, each modified set of beam weights of the plurality of sets of beam weights corresponding to a respective downlink signal of the plurality of downlink signals; and
transmit, to the first UE, a first downlink signal of the plurality of downlink signals using a first modified set of beam weights of the plurality of sets of beam weights.
18. The apparatus of claim 17 , wherein the instructions are further executable by the processor to cause the apparatus to:
transmit, to one or more UEs of the plurality of UEs, a first feedback information request signal, wherein receiving the plurality of uplink signals comprising the feedback information is based at least in part on the first feedback information request signal.
19. The apparatus of claim 17 , wherein the instructions are further executable by the processor to cause the apparatus to:
transmit, to the second network device, a second feedback information request signal associated with one or more UEs of the plurality of UEs, wherein receiving the plurality of uplink signals comprising the feedback information is based at least in part on the second feedback information request signal.
20. The apparatus of claim 17 , wherein the instructions are further executable by the processor to cause the apparatus to:
determine an angle of arrival spread corresponding to a dominant cluster or path of a first uplink signal of the plurality of uplink signals, wherein modifying the plurality of sets of beam weights is based at least in part on the angle of arrival spread, and wherein modifying the plurality of sets of beam weights comprises mitigating a side lobe level associated with an interference condition associated with the second UE of the plurality of UEs.
21. The apparatus of claim 17 , wherein the instructions are further executable by the processor to cause the apparatus to:
determine, based at least in part on the feedback information, an interference condition associated with the second UE of the plurality of UEs, wherein modifying the plurality of sets of beam weights is based at least in part on the interference condition, and wherein modifying the plurality of sets of beam weights comprises mitigating a side lobe level associated with the interference condition.
22. The apparatus of claim 17 , wherein the instructions are further executable by the processor to cause the apparatus to:
receive, from the first UE of the plurality of UEs, a first uplink signal of the plurality of uplink signals in a radio frequency spectrum region; and
receive, from the second UE of the plurality of UEs, a second uplink signal of the plurality of uplink signals in the radio frequency spectrum region.
23. The apparatus of claim 17 , wherein the plurality of uplink signals comprise at least one beam change request.