Mobile station and method to select an amplifying path thereof
AssigneesAmbit Microsystems (Shanghai) Ltd., Hon Hai Precision Industry Co., Ltd.
InventorsGuo-Zhi Ding, Xu Liu, Teng-Huei Chu
Life of this patent
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Abstract
A mobile station communicates with an access point (AP). The mobile station includes a low noise amplifier (LNA) path, a power amplifier (PA) path, a switch to select the LNA path or the PA path, and a controller directing the switch. The controller estimates amplifying power of the LNA, transmitting power and a sensitivity threshold of the PA. The controller receives a current received signal strength indication (RSSI) value of the AP. The controller determines whether amplifying power of the LNA path exceeds the PA sensitivity threshold. The controller transmits a selection signal directing the switch to select the LNA path if the amplifying power of the LNA path exceeds the sensitivity threshold of the PA.
Claims15
A mobile station in communication with an access point (AP), the mobile station comprising:
- a low noise amplifier (LNA) defining an LNA path;
- a power amplifier (PA) defining a PA path;
- and
- a controller directing a switch to switch between the LNA path and the PA path, the controller comprising:
- an estimation module to estimate amplifying power of the LNA, transmitting power and a sensitivity threshold of the PA;
- a connection module communicating with the AP, to acquire a current received signal strength indication (RSSI) value of the AP;
- a determination module to determine whether amplifying power of the LNA path exceeds the sensitivity threshold of the PA, according to the amplifying power of the LNA, the transmitting power and the sensitivity threshold of the PA, and the RSSI value;
- and
- a selection module to send a selection signal to the switch directing the switch to select the LNA path if the amplifying power of the LNA path exceeds the sensitivity threshold of the PA.
A method of selecting an amplifying path, applied in a mobile station, the mobile station communicating with an access point (AP), the mobile station comprising a low noise amplifier (LNA) defining an LNA path, a power amplifier (PA) defining a PA path, a switch for switching between the LNA path and the PA path, and a controller for generating a selection signal to direct the switch, and the method comprising:
- estimating amplifying power of the LNA, a transmitting power of the PA, and a sensitivity threshold of the PA;
- acquiring a current received signal strength indication (RSSI) value from the AP;
- determining whether amplifying power of the LNA path exceeds the sensitivity threshold of the PA, according to the amplifying power of the LNA, the transmitting power of the PA, the sensitivity threshold of the PA and the RSSI value;
- and
- sending the selection signal to the switch directing the switch to select the LNA path, if the amplifying power of the LNA path exceeds the sensitivity threshold of the PA.
Dependencies are inferred from the claim text.