Smart thermal throttling in millimeter wave (mmW)
Apparatus and methods are provided for thermal throttling for UE configured with multi-panel transceiving on FR2. In one novel aspect, the UE prioritizes throttling actions based on signal qualities of each transceiving panel. In one embodiment, the switching to the target panel from the active panel is selected as the highest priority throttling action when the signal quality of the target panel is similar to the active panel. In another embodiment, the UE further determines if the quality of the target panel is sufficient to support mmW transceiving before switching to the target panel. In one embodiment, the UE reduces one or more antennae of an active panel when the signal quality difference between the active panel and the target panel is bigger than a predefined gap threshold.
1 . A method for a user equipment (UE), comprising:
performing, by the UE, millimeter wave (mmW) transceiving on frequency range-2 (FR2) in a wireless network, wherein the UE is configured with a plurality of mmW transceiving panels including at least one active panel and one or more non-active panels, and wherein each mmW transceiving panel is configured with a plurality of antennae;
monitoring one or more temperature triggers preconfigured by the UE, wherein each of the temperature trigger indicates one or more throttling actions to relax rising UE temperature or to decrease the UE temperature;
determining signaling qualities of each mmW transceiving panels for throttling action selection upon detecting one or more temperature triggers; and
performing at least one throttling action based on the determined signal qualities, wherein the one or more throttling actions comprise switching to a target panel from an active panel and reducing one or more antennae of an active panel, and wherein the throttling action comprises switching to a target panel from an active panel when it is determined that a signal quality difference between the active panel and the target panel is smaller than or equal to a predefined gap threshold, or wherein the throttling action comprises reducing one or more antennae of an active panel when the signal quality difference between the active panel and the target panel is bigger than a predefined gap threshold.
2 . The method of claim 1 , wherein the target panel is selected from a plurality of candidate panels, and wherein a signal quality of the selected target panel is better than other candidate panels.
3 . The method of claim 1 , wherein the UE abandons the switching to the target panel when a signal quality of the target panel is below a predefined minimum threshold.
4 . The method of claim 1 , wherein switching to the target panel from the active panel is a highest priority option for the throttling action when a signal quality difference between the active panel and the target panel is smaller than or equal to a predefined gap threshold.
5 . The method of claim 1 , wherein the one or more temperature triggers comprise a detected temperature of the UE being higher than a temperature threshold.
6 . The method of claim 1 , wherein the one or more temperature triggers comprise a temperature rising rate being higher than a rate threshold.
7 . The method of claim 1 , wherein the signal qualities of each mmW transceiving panel is determined based on one or more measurements comprising coarse beam reference signal received power (RSRP), coarse beam signal to noise ratio (SNR), fine beam RSRP, fine beam SNR, and fine beam mutual information (MI).
8 . A user equipment (UE), comprising:
a plurality of millimeter wave (mmW) transceiving panels that receives radio frequency (RF) signal on frequency range-2 (FR2) in a wireless network, wherein each mmW transceiving panel is configured with a plurality of antennae;
a transceiving controller that performs mmW transceiving with at least one active panel, wherein one or more non-active panels are configured;
a temperature monitor module that monitors one or more temperature triggers preconfigured by the UE, wherein each of the temperature trigger indicates one or more throttling actions to relax rising UE temperature or to decrease the UE temperature;
a temperature management module that determines signaling qualities of each mmW transceiving panels for throttling action selection upon detecting one or more temperature triggers; and
a throttling module that performs at least one throttling action based on the determined signal qualities, wherein the one or more throttling actions comprise switching to a target panel from an active panel and reducing one or more antennae of an active panel, and wherein the throttling action comprises switching to a target panel from an active panel when it is determined that a signal quality difference between the active panel and the target panel is smaller than or equal to a predefined gap threshold, or wherein the throttling action comprises reducing one or more antennae of an active panel when the signal quality difference between the active panel and the target panel is bigger than a predefined gap threshold.
9 . The UE of claim 8 , wherein the target panel is selected from a plurality of candidate panels, and wherein a signal quality of the selected target panel is better than other candidate panels.
10 . The UE of claim 8 , wherein the UE abandons the switching to the target panel when a signal quality of the target panel is below a predefined minimum threshold.
11 . The UE of claim 8 , wherein switching to the target panel from an active panel is a highest priority option for the throttling action when a signal quality difference between the active panel and the target panel is smaller than or equal to a predefined gap threshold.
12 . The UE of claim 8 , wherein the one or more temperature triggers comprise a detected temperature of the UE being higher than a temperature threshold.
13 . The UE of claim 8 , wherein the one or more temperature triggers comprise a temperature rising rate being higher than a rate threshold.
14 . The UE of claim 8 , wherein the signal qualities of each mmW transceiving panel is determined based on one or more measurements comprising coarse beam reference signal received power (RSRP), coarse beam signal to noise ratio (SNR), fine beam RSRP, fine beam SNR, and fine beam mutual information (MI).