Mobile communication system, user equipment in mobile communication system, control program thereof, and synchronization establishment determination method in mobile communication system
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United States of America Patent
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Mar 1, 2011
Grant Date -
Jun 12, 2008
app pub date -
Dec 10, 2007
filing date -
Dec 11, 2006
priority date (Note) -
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Abstract
, even if it is determined in a normal synchronization establishment determination that synchronization cannot be established, when a phase difference in a common channel of a 0-system and a 1-system is within a certain range and a reception quality of the common channel (or a dedicated channel) has reached a certain level, it is determined that the synchronization can be established. Therefore, even when the transmitted waves of the multiple systems become approximately out of phase while the diversity transmission is performed in the W-CDMA wireless system, the synchronization establishment determination can be more adequately performed depending on whether or not communication is possible in an actual state.
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