Mobile communication system
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United States of America Patent
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Aug 13, 2019
Grant Date -
Jan 18, 2018
app pub date -
Sep 5, 2017
filing date -
Aug 9, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention has an object to provide a mobile communication system capable of performing communication between a user equipment device connected to a relay device and a core network if the relay device moves. An RN (1508) sets a TA of an eNB to be connected with the own device as a TA of the own device. For example, when the RN (1508) moves along an arrow (1500), the TA of the RN (1508) is changed from a first TA (1601) to which a fourth eNB (1525) belongs to a third TA (1602) to which a tenth eNB (1505) belongs. Upon change of the TA of the RN (1508) as described above, a user equipment device (UE; 1509) transmits a TA update request signal of the own device to a target second MME (1501).
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