发明名称 |
MOBILE COMMUNICATION SYSTEM AND USER EQUIPMENT DEVICE |
摘要 |
A technology is provided to specify a secondary cell on which a random access channel is to be transmitted when a random access procedure toward a secondary cell has occurred at user equipment. In a mobile communication system including a first base station, a second base station, and user equipment connected to the first base station as a master base station, upon triggering a random access procedure toward a cell of the second base station, the user equipment is configured to perform a contention based random access procedure on a secondary cell, based upon one of
(a) selecting the secondary cell on which a random access signal is to be transmitted in accordance with an instruction from the first base station;
(b) selecting the secondary cell on which the random access signal is to be transmitted using implicit information in the user equipment; and
(c) determining autonomously at the user equipment the secondary cell on which the random access signal is to be transmitted. |
申请公布号 |
EP3101986(A4) |
申请公布日期 |
2017.01.25 |
申请号 |
EP20150742956 |
申请日期 |
2015.01.16 |
申请人 |
NTT DOCOMO, INC. |
发明人 |
UCHINO, Tooru;TAKAHASHI, Hideaki;TAKEDA, Kazuki |
分类号 |
H04W74/08;H04W72/02;H04W72/04 |
主分类号 |
H04W74/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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