Ue signal to interference power ratio detection for network scheduling assistance
Embodiments disclosed herein relate to techniques for measuring and/or detecting a signal-to-interference ratio (SIR) of a received signal at a user equipment (UE). The received signal may include a desired signal, co-channel interference, adjacent channel interference, and an in-band blocker. The UE may filter (e.g., remove) the various interferences and in-band blocker. The UE may determine or measure a power (or Received Signal Strength Indicator (RSSI)) of the desired signal and a power (or RSSI) of the co-channel interference separately because the desired signal and the co-channel interference overlap in frequency. To do so, the UE may determine a total power of the received signal including the desired signal and co-channel interference. The UE may receive the desired signal again while an uplink transmission is deactivated (and thus without the interference). The UE may then calculate the SIR based on the total power and the power of the desired signal.
1. A base station, comprising:
a transmitter;
a receiver; and
processing circuitry coupled to the transmitter and the receiver, the processing circuitry configured to
establish a frequency band combination for user equipment,
cause, using the transmitter, the user equipment to deactivate uplink transmission capability based on potential interference with the frequency band combination,
cause, using the transmitter, the user equipment to determine a signal-to-interference ratio associated with a signal, and
downgrade transmission data or downgrade reception data based on an indication of the signal-to-interference ratio received from the user equipment.
2. The base station of claim 1 , wherein interference associated with the signal-to-interference ratio is caused by uplink transmission.
3. The base station of claim 1 , wherein the processing circuitry is configured to downgrade the transmission data or downgrade the reception data by only scheduling a master cell group in a dual-connectivity combination, only scheduling a primary cell operation in a carrier aggregation combination, disabling secondary cell uplink transmission in a 2-uplink carrier aggregation combination, disabling secondary cell downlink reception, or any combination thereof.
4. The base station of claim 1 , wherein the processing circuitry is configured to send a test signal based on the frequency band combination, the test signal configured to cause the user equipment to determine a power of the test signal while the uplink transmission capability of the user equipment is deactivated.
5. The base station of claim 1 , wherein the processing circuitry is configured to schedule, using the transmitter, the user equipment using the frequency band combination based on the signal-to-interference ratio after downgrading the transmission data or the reception data.
6. The base station of claim 1 , wherein the processing circuitry is configured to downgrade the transmission data or the reception data based on the signal-to-interference ratio failing to exceed a threshold.
7. The base station of claim 1 , wherein the processing circuitry is configured to determine an interference type of the potential interference, the interference type comprising an intermodulation interference or a harmonic interference.
8. The base station of claim 1 , wherein the processing circuitry is configured to increase throughput or modulation order of transmissions associated with the frequency band combination or receptions associated with the frequency band combination based on the signal-to-interference ratio.
9. The base station of claim 8 , wherein the processing circuitry is configured to increase the throughput or the modulation order of the transmissions or the receptions based on the signal-to-interference ratio exceeding a threshold value.
10. A method, comprising:
deactivating, by processing circuitry of user equipment, uplink transmission capability;
receiving, at an antenna of the user equipment, a signal;
activating, by the processing circuitry, the uplink transmission capability;
receiving, at the antenna, interference;
determining, by the processing circuitry, a signal-to-interference ratio based on the signal and the interference; and
sending an indication of the signal-to-interference ratio to a base station, wherein the base station is configured to downgrade uplink transmission capability of the user equipment based on the signal-to-interference ratio.
11. The method of claim 10 , comprising deactivating, by the processing circuitry of the user equipment, the uplink transmission capability based on a determination of potential interference associated with a frequency band combination.
12. The method of claim 10 , wherein the interference is caused by uplink transmission.
13. The method of claim 10 , comprising downgrading downlink transmission based on the signal-to-interference ratio.
14. The method of claim 13 , wherein the interference is caused by downlink transmission.
15. The method of claim 10 , comprising determining, by the processing circuitry, a signal power of the signal and an interference power of the interference, the signal-to-interference ratio determined based on the signal power and the interference power.
16. One or more tangible, non-transitory, computer-readable media, storing instructions that cause one or more processors to:
receive, via a receiver of user equipment, a signal having known symbols;
determine a power of a portion of the signal corresponding to the known symbols;
determine an interference power of the signal corresponding to interference in the signal;
determine a signal-to-interference ratio based on the power of the portion of the signal corresponding to the known symbols and the interference power; and
transmit an indication of the signal-to-interference ratio to a network, wherein the network is configured to downgrade downlink transmission capability of the receiver based on the signal-to-interference ratio.
17. The one or more tangible, non-transitory, computer-readable media of claim 16 , wherein the instructions cause one or more processors to determine the power of the portion of the signal corresponding to the known symbols by cross-correlating the signal with the known symbols.
18. The one or more tangible, non-transitory, computer-readable media of claim 16 , wherein the instructions cause one or more processors to determine the interference power by removing the portion of the signal from the signal.
19. The one or more tangible, non-transitory, computer-readable media of claim 16 , wherein the interference is caused by uplink transmission.
20. The one or more tangible, non-transitory, computer-readable media of claim 16 , wherein the portion comprises a signal-to-interference estimation signal.