发明名称 |
METHOD AND APPARATUS FOR ACCESSING A RANDOM ACCESS CHANNEL BY SELECTIVELY USING DEDICATED OR CONTENTION-BASED PREAMBLES DURING HANDOVER |
摘要 |
A method and apparatus for accessing a random access channel (RACH) during handover are disclosed. A handover procedure is initiated and a maximum handover interruption timer is activated. A dedicated preamble is transmitted in an attempt to access the RACH on a condition that the dedicated preamble is reserved in a current random access opportunity and the maximum handover interruption timer has not expired. A contention-based preamble is transmitted in an attempt to access the RACH on a condition that a dedicated preamble is not reserved in a current random access opportunity. If the maximum handover interruption timer has expired, a contention-based preamble is transmitted in an attempt to access the RACH.
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申请公布号 |
US2009285180(A1) |
申请公布日期 |
2009.11.19 |
申请号 |
US20090392235 |
申请日期 |
2009.02.25 |
申请人 |
INTERDIGITAL PATENT HOLDINGS, INC. |
发明人 |
ZHANG GUODONG;WANG JIN |
分类号 |
H04W36/00 |
主分类号 |
H04W36/00 |
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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