Uwb on/off operation method to minimize power consumption and uwb anchor using the same
AssigneeHyundai Mobis Co., Ltd.
InventorJong Chul LIM
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Abstract
An ultra-wideband (UWB) anchor using a UWB ON/OFF operation method to minimize power consumption. The UWB anchor includes a power supply to supply power to the UWB anchor, a transceiver to transmit/receive a UWB signal to and from a UWB tag for performing ranging, and to transmit a reception failure when failing to receive the UWB signal from the UWB tag, and a controller to receive the reception failure from the transceiver and to end a ranging session when a cumulative sum of ranging failures for each ranging block reaches a maximum number of failed ranging round attempts.
Claims4
An ultra-wideband (UWB) anchor using a UWB ON/OFF operation method to minimize power consumption, the UWB anchor comprising:
- a power supply configured to supply power to the UWB anchor;
- a transceiver configured to transmit/receive a UWB signal to and from a UWB tag for performing ranging, and to transmit a reception failure when failing to receive the UWB signal from the UWB tag;
- and
- a controller configured to receive the reception failure from the transceiver and to end a ranging session when a cumulative sum of ranging failures for each ranging block reaches a maximum number of failed ranging round attempts.
A smart key system using a UWB ON/OFF operation method to minimize power consumption, the smart key system comprising:
- a plurality of UWB anchors installed in a vehicle, each UWB anchor being configured to calculate a distance between itself and a UWB tag through UWB communication and to transmit the distance;
- and
- an integrated controller configured to calculate position of the UWB tag by using the distances transmitted from the plurality of UWB anchors,
- wherein each UWB anchor is configured to end a UWB signal-reception standby (or UWB ON) mode to enter an idle (or UWB OFF) mode when a cumulative sum of ranging failures for each ranging block reaches a maximum number of failed ranging round attempts, and to re-enter the UWB signal-reception standby mode when a UWB OFF time elapses, and
- the UWB OFF time is set longer than a time for the UWB signal-reception standby (or the UWB ON) mode.
An ultra-wideband (UWB) ON/OFF operation method of a UWB anchor to minimize power consumption, the UWB ON/OFF operation method comprising:
- entering, by a UWB anchor, a UWB signal-reception standby (or UWB ON) mode;
- determining whether ranging fails for each ranging block;
- cumulatively summing, by a controller, a number of ranging failures when the ranging consecutively fails in more than one ranging block;
- checking whether a cumulative sum of the number of ranging failures reaches a maximum number of failed ranging round attempts;
- maintaining the UWB anchor in a UWB signal-reception non-standby (or UWB OFF) mode for a UWB OFF time when the cumulative sum of the number of ranging failures reaches the maximum number of failed ranging round attempts;
- and
- returning the UWB anchor to the UWB signal-reception standby (or UWB ON) mode when the preset UWB OFF time elapses,
- wherein the UWB OFF time is set longer than a time for the UWB signal-reception standby (or the UWB ON) mode.
Dependencies are inferred from the claim text.