公开(公告)号：US20150305055A1

公开(公告)日：2015-10-22

申请号：US14733606

申请日：2015-06-08

Applicant: APPLE INC.

Inventor： Markus Mueck ,  Maik Bienas ,  Andreas Schmidt

IPC: H04W72/12

CPC classification number: H04W72/1226 ,  H04B15/00 ,  H04B2215/062 ,  H04J11/0033 ,  H04L5/0007 ,  H04L5/0016 ,  H04L5/0048 ,  H04L25/4975 ,  H04W72/082 ,  H04W72/1263

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.

Abstract translation: 使一个或多个无线网络能够最小化接收机处的细胞间干扰（ICI）的方法和装置。 在一个实施例中，网络包括基于OFDM的蜂窝网络，并且该方法包括利用来自多个基站的信号的非数据部分的先验知识来调度传输。 在一个变型中，这些非数据部分包括导频音; 可以将导频音调调到网络的各种时频资源上，以使ICI最小化。 接收机的移动性上下文也可以用作动态调整导频音密度的基础。 在另一变型中，可以将预编码（例如，Tomlinson-Harashima预编码）应用于“形成”所发射信号的非数据部分，以便减轻ICI。 在其他变型中，使用帧前导码和学习序列作为在潜在干扰基站上调用选择性传输时间偏移的基础，以便使ICI最小化。

公开(公告)号：US09036615B2

公开(公告)日：2015-05-19

申请号：US14053538

申请日：2013-10-14

Applicant: Apple Inc.

Inventor： Maik Bienas ,  Hyung Nam Choi ,  Andreas Schmidt

IPC: H04J1/00 ,  H04W16/20 ,  H04W36/30 ,  H04W24/02 ,  H04W24/08 ,  H04W84/04

CPC classification number: H04W16/20 ,  H04W16/10 ,  H04W24/02 ,  H04W24/08 ,  H04W36/30 ,  H04W60/04 ,  H04W64/00 ,  H04W64/003 ,  H04W84/042 ,  H04W84/045 ,  H04W88/08

Abstract: Methods and apparatus that enable a wireless femtocell to operate in its designated frequency so as to minimize interference between the wireless femtocell and neighboring base stations (and other femtocells or nomadic cells). In one exemplary embodiment, the femtocell cell comprises a UMTS (Universal Mobile Telecommunications System) femtocell which has the ability to scan the air interface in a manner similar to that associated with a UE in order to identify unallocated resources within the wireless network, and subsequently request access for the unallocated resources. Business methods useful in combination with the aforementioned methods and apparatus are also disclosed.

公开(公告)号：US20130279431A1

公开(公告)日：2013-10-24

申请号：US13846649

申请日：2013-03-18

Applicant: Apple Inc.

Inventor： Markus Mueck ,  Andreas Schmidt

IPC: H04W72/04

CPC classification number: H04W72/0406 ,  H04W48/10 ,  H04W48/16

Abstract: Methods and apparatus to enable a wireless network system to dynamically change information channel message broadcasts. In one aspect, cellular network systems optimize pilot channel message delivery based at least in part on one or more network parameters. Base stations and/or cellular devices can dynamically configure the pilot channel message delivery or reception based on the network parameters. For example, such flexible pilot channel message delivery may more frequently deliver prioritized pilot channel messages, and less frequently broadcast low priority messages. Cellular subscribers with appropriately enabled user equipment may improve their power and applications performance through implementation of the invention. Furthermore, base stations may reclaim the freed cellular resources to support other services. Legacy subscribers are advantageously not affected.

Abstract translation: 使无线网络系统动态地改变信息信道消息广播的方法和装置。 在一个方面，蜂窝网络系统至少部分地基于一个或多个网络参数优化导频信道消息传递。 基站和/或蜂窝设备可以基于网络参数动态配置导频信道消息传递或接收。 例如，这种灵活的导频信道消息传递可以更频繁地传送优先级导频信道消息，并且较不频繁地传送低优先级消息。 具有适当启用的用户设备的蜂窝用户可以通过实施本发明来提高其功率和应用性能。 此外，基站可以回收释放的蜂窝资源来支持其他业务。 传统用户有利地不受影响。