发明名称 |
RANDOM ACCESS IN A MOBILE TELECOMMUNICATIONS SYSTEM |
摘要 |
A novel format is provided for an uplink common physical channel in a random access mobile communications system, whereby a mobile station transmits a first packet including a predetermined signature pattern (206, 210) in parallel with a second packet including the data part (212, 216, 220) of the random access request. Consequently, in addition to its attendant advantages, the signature part of a random access request can also function as a Pilot by providing additional energy for channel estimation during the data part of the request, while reducing the amount of overhead signalling involved. This additional energy is especially useful for ensuring sufficiently high quality coherent detection of the data part in a rapidly varying radio channel environment. |
申请公布号 |
WO9921375(A3) |
申请公布日期 |
1999.08.19 |
申请号 |
WO1998SE01921 |
申请日期 |
1998.10.23 |
申请人 |
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) |
发明人 |
DAHLMAN, ERIK, BENGT, LENNART;JAMAL, KARIM |
分类号 |
H04J13/00;H04B7/26;H04W28/06;H04W74/08 |
主分类号 |
H04J13/00 |
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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