公开(公告)号：US09232469B2

公开(公告)日：2016-01-05

申请号：US14025456

申请日：2013-09-12

Applicant: STMicroelectronics, Inc.

Inventor： Liwen Chu ,  George A. Vlantis

IPC: G08C17/00 ,  H04W52/02

CPC classification number: H04W52/0209 ,  H04W52/0219 ,  Y02D70/142

Abstract: An additional cyclic redundancy check (CRC) is inserted in IEEE 802.11 beacon or data frames prior to the end of the frame, at a location following information sufficient for the receiving station to determine whether the frame is from an overlapping basic service set or intended for a different station and to extract other necessary or useful information such as a time of the next full beacon. Upon detecting the CRC, the receiving STA can terminate reception of the frame early to conserve power, and then enter a low power operational mode to further conserve power.

Abstract translation: 在足以使接收站确定帧是否来自重叠的基本业务集或旨在为重叠的基本业务集合的信息之后的位置处，在帧的结尾之前的IEEE 802.11信标或数据帧中插入附加的循环冗余校验（CRC） 一个不同的站，并提取其他必要或有用的信息，如下一个完整信标的时间。 在检测到CRC时，接收STA可以提前终止帧的接收以节省功率，然后进入低功率操作模式以进一步节省功率。

公开(公告)号：US20140185510A1

公开(公告)日：2014-07-03

申请号：US14199774

申请日：2014-03-06

Applicant: STMicroelectronics, Inc.

Inventor： Liwen Chu ,  George A. Vlantis

IPC: H04W52/02

CPC classification number: H04W52/0219 ,  H04W40/005 ,  H04W52/0216 ,  H04W52/0229 ,  H04W52/0258 ,  H04W72/1263 ,  H04W84/10 ,  H04W84/12 ,  Y02D70/142

Abstract: This invention relates to switching power saving modes and rescheduling communication frames for various periods of a beacon interval (BI) defined under WGA Draft Specification 0.8 for the personal basic service set (PBSS) and infrastructure BSS to achieve further power savings and other advantages. Stations can be awake during a contention-based period (CBP) if it is in active state and can schedule frames during a service period (SP) to allow the assigned receiver to transmit to the assigned initiator. Stations in a group can schedule a group address frame to be sent during the CBP and group SP of a specific periodic BI. Stations in peer-to-peer connection may directly notify its peer stations of its power saving mode and wakeup schedule. Stations of an infrastructure basic service set (BSS) can also use the same power saving mechanism as stations of a PBSS noting a difference where each BI will be an access point's (AP's) awake BI.

Abstract translation: 本发明涉及用于个人基本服务组（PBSS）和基础设施BSS的WGA草案规范0.8中定义的信标间隔（BI）的各个周期的切换省电模式和重新调度通信帧，以实现进一步的功率节省和其他优点。 如果处于活动状态，站可以在基于争用的周期（CBP）期间唤醒，并且可以在服务周期（SP）期间调度帧以允许所分配的接收者向所分配的发起者发送。 组中的站可以安排在特定周期性BI的CBP和组SP期间发送的组地址帧。 点对点连接的站点可以直接通知其对等站其省电模式和唤醒时间表。 基础设施基础服务集（BSS）的站也可以使用与PBSS站相同的省电机制，注意到每个BI将是接入点（AP）的清醒BI。

公开(公告)号：US20140105131A1

公开(公告)日：2014-04-17

申请号：US14051583

申请日：2013-10-11

Applicant: STMICROELECTRONICS, INC.

Inventor： Liwen Chu ,  George A. Vlantis

IPC: H04W48/16

CPC classification number: H04W48/16 ,  H04W8/005 ,  H04W40/244 ,  H04W40/246 ,  H04W48/12

Abstract: A wireless network access point generates a fast initial link setup (FILS) discovery frame for broadcast to one or more wireless stations. The wireless network access point supports many operating channels including a primary channel. The FILS discovery frame includes a data field populated with an identification of a channel number for that primary channel of the wireless network access point. The FILS discovery frame includes another data field populated with a primary channel operating class identification. The broadcast FILS discovery frame further includes data indicating whether indicating whether multiple BSSIDs are supported. An FD capability field of the FILS discovery frame includes sub-fields indicating one or more of operation channel width, PHY type of the wireless access point, number of spatial streams supported by the wireless access point and multiple BSSIDs support provided by the wireless access point.

Abstract translation: 无线网络接入点生成用于广播到一个或多个无线站的快速初始链路建立（FILS）发现帧。 无线网络接入点支持许多操作信道，包括主信道。 FILS发现帧包括填充有无线网络接入点的主信道的信道号的标识的数据字段。 FILS发现帧包括填充有主信道操作类标识的另一数据字段。 广播FILS发现帧还包括指示是否指示是否支持多个BSSID的数据。 FILS发现帧的FD能力字段包括指示操作信道宽度，无线接入点的PHY类型，无线接入点支持的空闲数量的数量和由无线接入点提供的多个BSSID支持中的一个或多个的子字段 。

公开(公告)号：US20140092797A1

公开(公告)日：2014-04-03

申请号：US13631284

申请日：2012-09-28

Applicant: STMICROELECTRONICS, INC.

Inventor： Liwen Chu ,  George A. Vlantis

IPC: H04W52/02 ,  H04W56/00

CPC classification number: H04W52/0216 ,  Y02D70/122 ,  Y02D70/142

Abstract: Enhanced low power medium access (LPMA) processes involve the enhanced LPMA STA indicating low power capabilities during association and being allocated an AID. The AID(s) for one or a group of enhanced LPMA STA(s) are included in one TIM sent during a different BEACON interval than the AID(s) for another or another group of enhanced LPMA STA(s). In addition, or alternatively, the AID(s) for enhanced LPMA STA(s) are located at an edge of the AID set within a TIM, a portion of the TIM that may be easily truncated and therefore not sent. The enhanced LPMA STAs and associated access point negotiate unique offset and sleepinterval periods for polling or data uplink by the enhanced LPMA STAs.

Abstract translation: 增强的低功率介质访问（LPMA）处理涉及增强的LPMA STA，其指示关联期间的低功率能力并且被分配AID。 一个或一组增强型LPMA STA的AID包括在与另一组或另一组增强型LPMA STA的AID不同的BEACON间隔期间发送的一个TIM中。 另外或替代地，用于增强的LPMA STA的AID位于TIM内的AID集合的边缘，该TIM的一部分可以容易地被截断，因此不被发送。 增强的LPMA STA和相关联的接入点通过增强的LPMA STA协商轮询或数据上行链路的唯一偏移和休眠间隔周期。

公开(公告)号：US20130188522A1

公开(公告)日：2013-07-25

申请号：US13739857

申请日：2013-01-11

Applicant: STMicroelectronics, Inc. ,  STMicroelectronics Srl

Inventor： Liwen Chu ,  George Vlantis ,  Vincenzo Scarpa

IPC: H04W84/18

CPC classification number: H04W48/14 ,  H04W40/34 ,  H04W48/08 ,  H04W72/02 ,  H04W72/1252 ,  H04W84/12 ,  H04W84/18 ,  H04W84/22 ,  Y02D70/142 ,  Y02D70/22

Abstract: The addition of high throughput capability elements to beacon frames and peer link action frames in wireless mesh networks enable the utilization of desirable features without further modifications to the network. Rules can be established for high throughput mesh point protection in a mesh network, Space-time Block Code (STBC) operations and 20/40 MHz operation selections. However, features such as PSMP (power save multi-poll) and PCO (phased coexistence operations) are barred from implementation to prevent collisions.