发明授权
US08767681B2 Parameterized codebook subsets for use with precoding MIMO transmissions
有权
用于预编码MIMO传输的参数化码本子集
- 专利标题: Parameterized codebook subsets for use with precoding MIMO transmissions
- 专利标题(中): 用于预编码MIMO传输的参数化码本子集
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申请号: US13080826申请日: 2011-04-06
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公开(公告)号: US08767681B2公开(公告)日: 2014-07-01
- 发明人: David Hammarwall , George Jöngren
- 申请人: David Hammarwall , George Jöngren
- 申请人地址: SE Stockholm
- 专利权人: Telefonaktiebolaget LM Ericsson (Publ)
- 当前专利权人: Telefonaktiebolaget LM Ericsson (Publ)
- 当前专利权人地址: SE Stockholm
- 代理机构: Coats and Bennett, P.L.L.C.
- 主分类号: H04W4/00
- IPC分类号: H04W4/00 ; H04B7/005 ; H04B1/44 ; H04J3/16
摘要:
One aspect of the teachings presented herein provides advantages for sending precoder selection feedback from a transceiver to another transceiver, for use by the other transceiver as precoding recommendations. The transceiver generates two types of precoder selection feedback, where one type uses a smaller signaling payload than the other and therefore provides a distinct reduction in the signaling overhead associated with reporting precoding recommendations. The transceiver uses the reduced-overhead type of reporting when reporting at certain times, or on certain channels, or in response to control signaling. In one example, a UE in an LTE network sends precoder information to an eNodeB on the PUCCH by sending smaller-range index values that index only a subset of precoders, but sends full-range index values when reporting on the PUSCH, which index a larger set of precoders.
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