发明名称 |
Radio communication method and base station |
摘要 |
<p>A base station is configured to transmit a downlink signal to a mobile station located in a sector managed by the base station. The downlink signal is spread using a scrambling code. The base station has a monitor configured to monitor a change of a reception condition of an uplink common channel of the mobile station in the sector, a DOA estimator configured to estimate a direction of arrival of an uplink signal transmitted from the mobile station, in response to the change, an area border setter (3) configured to separate the sector into a plurality of areas, by setting an area border in the sector in accordance with the estimated direction, a scrambling code assigner (2) configured to assign a different scrambling code to each of the separated areas and a spreader configured to spread the downlink signal using the assigned scrambling code in each of the separated areas.
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申请公布号 |
EP1453331(A3) |
申请公布日期 |
2007.02.28 |
申请号 |
EP20040003557 |
申请日期 |
2004.02.17 |
申请人 |
NTT DOCOMO, INC. |
发明人 |
UMESH, ANIL;OKAWA, KOICHI;TANAKA, SHINYA;NAKAMURA, TAKEHIRO |
分类号 |
H04J13/00;H04J13/16;H04W16/06;H04W72/04;H04W72/08;H04W76/02;H04W88/08 |
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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