Patent ID: 9585086
Date: 2017-02-28
CPC Classifications: H04W,Y02D

Claim:
1. A mobile station apparatus comprising: detection threshold changing circuitry that changes a detection threshold used for detecting a reception wave from a base station apparatus, on the basis of use environment information that represents a use environment of the mobile station apparatus; channel selecting circuitry that selects a channel having a reception level higher than the detection threshold from among channels that constitute the reception wave; and synchronization processing circuitry that performs a synchronization process on a reception wave of the channel selected by the channel selecting circuitry; wherein the use environment information includes country information regarding an area in which a network connected to the base station apparatus is operated, frequency band information that represents a frequency band that is in operation in the network connected to the base station apparatus, and location information of the mobile station apparatus; the detection threshold changing circuitry changes the detection threshold by using any of the country information, the frequency band information, and the location information as the use environment information; and the use environment information also includes carrier information regarding a carrier that operates the network connected to the base station apparatus, and the detection threshold changing circuitry changes the detection threshold also on the basis of the carrier information.