Invention Grant
- Patent Title: Methods and apparatus for partial interference reduction within wireless networks
- Patent Title (中): 无线网络内部分干扰减少的方法和装置
-
Application No.: US13657726Application Date: 2012-10-22
-
Publication No.: US09054791B2Publication Date: 2015-06-09
- Inventor: Markus Mueck , Maik Bienas , Andreas Schmidt
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: APPLE INC.
- Current Assignee: APPLE INC.
- Current Assignee Address: US CA Cupertino
- Agency: Fay Kaplun & Marcin, LLP
- Main IPC: H04K1/02
- IPC: H04K1/02 ; H04L25/03 ; H04L25/49 ; H04B15/00 ; H04J11/00 ; H04L5/00 ; H04L25/497 ; H04W72/08

Abstract:
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.
Public/Granted literature
- US20130115986A1 METHODS AND APPARATUS FOR PARTIAL INTERFERENCE REDUCTION WITHIN WIRELESS NETWORKS Public/Granted day:2013-05-09
Information query