发明授权
- 专利标题: Methods and apparatus for partial interference reduction within wireless networks
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申请号: US14733606申请日: 2015-06-08
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公开(公告)号: US10785783B2公开(公告)日: 2020-09-22
- 发明人: Markus Mueck , Maik Bienas , Andreas Schmidt
- 申请人: APPLE INC.
- 申请人地址: US CA Cupertino
- 专利权人: Apple Inc.
- 当前专利权人: Apple Inc.
- 当前专利权人地址: US CA Cupertino
- 代理机构: Fay Kaplun & Marcin, LLP
- 主分类号: H04K1/10
- IPC分类号: H04K1/10 ; H04L27/28 ; H04W72/12 ; H04J11/00 ; H04L5/00 ; H04L25/497 ; H04B15/00 ; H04W72/08
摘要:
Methods and apparatus that enable one or more wireless networks to minimize inter-cellular interference (ICI) at a receiver. In one embodiment, the network comprises an OFDM-based cellular network, and the method comprises utilizing a priori knowledge of non-data portions of signals from multiple base stations in order to schedule transmissions. In one variant, these non-data portions comprise pilot tones; the pilot tones can be scheduled onto various time-frequency resources of the network so as to minimize ICI. The mobility context of the receiver can also be used as a basis for dynamically adjusting the pilot tone density. In another variant, precoding (e.g., Tomlinson-Harashima precoding) can be applied to “shape” the non-data portions of the transmitted signals so as to mitigate ICI. In yet other variants, frame preambles and learning sequences are used as the basis for invoking selective transmission time shifts across the potentially interfering base stations so as to minimize ICI.
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