Wireless device for power saving
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsGang Zou, Henrik Sjöland
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Abstract
A wireless device comprising at least one antenna is provided. The wireless devices further comprises a main receiver, having first automatic gain control circuitry for controlling a gain applied to signals received by way of the antenna. The wireless device further comprises an auxiliary receiver, configured to monitor a power of a periodic reference signal received by way of the antenna, and further configured to send power information to the main receiver. The main receiver is configured, on waking up, to use the power information received from the auxiliary receiver to assist in operation of the first automatic gain control circuitry.
Claims17
A wireless device comprising:
- at least one antenna;
- a main receiver, having first automatic gain control circuitry for controlling a gain applied to signals received via said at least one antenna;
- and
- an auxiliary receiver comprising second automatic gain control circuitry, and
- the auxiliary receiver is configured to:
- receive a Synchronization Signal Block (SSB);
- responsive to receiving the SSB, generate power information while the main receiver is in a DeepSleep mode, wherein the power information comprises a gain value applied by the second automatic gain control circuitry;
- calculate a power of a periodic reference signal received via said at least one antenna;
- and
- send the generated power information to the main receiver,
- wherein the main receiver is configured to:
- receive the generated power information from the auxiliary receiver;
- responsive to receiving the generated power information, wake up from the DeepSleep mode;
- and
- based on the power of the periodic reference signal, perform an automatic gain control operation using the first automatic gain control circuitry,
- wherein the DeepSleep mode is a power saving mode where the main receiver cannot at least receive and decode the SSB.
A method performed by a wireless device, the wireless device comprising at least one antenna, a main receiver having first automatic gain control circuitry for controlling a gain applied to signals received via said at least one antenna, and an auxiliary receiver comprising second automatic gain control circuitry, the method comprising:
- the auxiliary receiver, receiving a Synchronization Signal Block (SSB);
- responsive to receiving the SSB, the auxiliary receiver, generating power information while the main receiver is in a DeepSleep mode, wherein the power information comprises a gain value applied by the second automatic gain control circuitry;
- calculating, using the auxiliary receiver, a power of a periodic reference signal received via said at least one antenna;
- the auxiliary receiver, sending the generated power information to the main receiver;
- the main receiver, receiving the generated power information from the auxiliary receiver;
- responsive to receiving the generated power information, the main receiver, waking up from the DeepSleep mode;
- and
- based on the power of the periodic reference signal, performing, by the main receiver, an automatic gain control operation using the first automatic gain control circuitry, wherein the DeepSleep mode is a power saving mode where the main receiver cannot at least receive and decode the SSB.
Dependencies are inferred from the claim text.