发明名称 |
METHOD AND APPARATUS FOR DETERMINING CHANNEL QUALITY INDEX IN MULTIPLE USER-MIMO COMMUNICATION NETWORKS |
摘要 |
In order to minimize the control signaling overhead associated with transmitting CQI data from mobile stations to base stations in wireless communication networks supporting MU-MIMO, the CQI during MU-MIMO operation is estimated based on SU-MIMO CQI data, mobile station geometry data, and mobile station PMI (Precoding Matrix Index) data. More particularly, the base station maintains and updates a knowledge pool that correlates geometry data and learned impact of interfering precoder data to degradation of CQI values responsive to switching from SU-MIMO operation to MU-MIMO operations. Then, when the base station switches from SU-MIMO operation to MU-MIMO operation, it consults the knowledge pool to predict the degradation in CQI and subtracts them from the known, pre-switching SU-MIMO CQI feedback data for each relevant mobile station to predict the post-switching MU-MIMO CQIs for that mobile station. |
申请公布号 |
EP2422542(A4) |
申请公布日期 |
2016.08.03 |
申请号 |
EP20100766571 |
申请日期 |
2010.04.21 |
申请人 |
APPLE INC. |
发明人 |
YUAN, JUN;VRZIC, SOPHIE;FONG, MO-HAN;NOVAK, ROBERT;YU, DONG-SHENG;MA, JIANGLEI |
分类号 |
H04B7/04;H04B7/06;H04B17/373;H04L1/00;H04W72/08;H04W88/08 |
主分类号 |
H04B7/04 |
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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