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：US09596106B2

公开(公告)日：2017-03-14

申请号：US14170111

申请日：2014-01-31

Applicant: STMICROELECTRONICS ASIA PACIFIC PTE LTD. ,  STMICROELECTRONICS, INC.

Inventor： Karthik Muralidhar ,  George A. Vlantis

IPC: H04K1/10 ,  H04L25/03 ,  H04B7/04 ,  H04L27/26 ,  H04L25/02 ,  H04L5/00

CPC classification number: H04L25/03821 ,  H04B7/0413 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/022 ,  H04L25/0226 ,  H04L27/2601

Abstract: In an embodiment, a transmitter includes a transmission path configurable to generate first pilot clusters in response to a matrix, each first pilot cluster including a respective first pilot subsymbol in a first cluster position and a respective second pilot subsymbol in a second cluster position such that a vector formed by the first pilot subsymbols is orthogonal to a vector formed by the second pilot subsymbols, the matrix having a dimension related to a number of cluster positions in each of the first pilot clusters. For example, where such a transmitter transmits simultaneous orthogonal-frequency-division-multiplexed (OFDM) signals (e.g., MIMO-OFDM signals) over respective channels that may impart inter-carrier interference (ICI) to the signals due to Doppler spread, the pattern of the pilot symbols that compose the pilot clusters may allow a receiver of these signals to estimate the responses of these channels more accurately than conventional receivers.

Abstract translation: 在实施例中，发射机包括可配置为响应于矩阵生成第一导频簇的传输路径，每个第一导频簇包括第一簇位置中的相应第一导频子符号和第二簇位置中的相应第二导频子符号，使得 由第一导频子符号形成的矢量与由第二导频子符号形成的矢量正交，该矩阵具有与每个第一导频簇中的簇的位置数相关的维数。 例如，在这种发射机通过可能由于多普勒扩展而给予信号的载波间干扰（ICI）的相应信道上发射同时正交频分复用（OFDM）信号（例如，MIMO-OFDM信号）的情况下， 构成导频簇的导频符号的模式可以允许这些信号的接收机比常规接收机更准确地估计这些信道的响应。

公开(公告)号：US09363175B2

公开(公告)日：2016-06-07

申请号：US13710298

申请日：2012-12-10

Applicant: STMicroelectronics, Inc.

Inventor： Liwen Chu ,  George A. Vlantis

IPC: H04W28/06 ,  H04L12/741 ,  H04L29/06 ,  H04W84/12

CPC classification number: H04L45/74 ,  H04L69/04 ,  H04W28/06 ,  H04W84/12

Abstract: Methods and systems are disclosed specifying the arrangement and content of the fields in data and management frames, which allow for greater payload efficiency in frame-based communication networks. The content of the fields is changed from the standard 802.11 arrangement to meet of the needs of networks such as Sub-1 GHz networks, including those of the 802.11ah standard, and sensor networks with a large number of stations transmitting at low data rates. In some embodiments, MAC header fields are reduced from standard 802.11 header fields by using only two fields for addressing and eliminating standard fields that are not used in sensor networks.

Abstract translation: 公开了指定数据和管理帧中的字段的布置和内容的方法和系统，其允许基于帧的通信网络中的有效载荷效率更高。 这些字段的内容从标准的802.11布局改变为满足诸如Sub-1GHz网络（包括802.11ah标准）的网络的需求，以及具有大量站在低数据速率下传输的传感器网络。 在一些实施例中，通过仅使用两个用于寻址和消除传感器网络中未使用的标准字段的字段，从标准802.11报头字段减少MAC报头字段。

公开(公告)号：US09237525B2

公开(公告)日：2016-01-12

申请号：US14199774

申请日：2014-03-06

Applicant: STMicroelectronics, Inc.

Inventor： Liwen Chu ,  George A. Vlantis

IPC: H04W52/02 ,  H04W72/12 ,  H04W84/10

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：US20140028547A1

公开(公告)日：2014-01-30

申请号：US13952359

申请日：2013-07-26

Applicant: STMicroelectronics, Inc.

Inventor： Paul Bromley ,  George A. Vlantis ,  Jefferson E. Owen

IPC: G06F3/0346

CPC classification number: G06F3/0346 ,  G06F3/016 ,  G06F3/017 ,  G06F3/04815

Abstract: A user control device operates with a variety of host systems, including computers, televisions and recorded or streaming video playback devices, and gaming systems, is mounted to the user's hand. The user control device includes audio and optical sensors for capturing audio and image or video data, allowing the use of voice commands and display focal center alignment control for “swiping” or scrolling the display. A combined inertial (accelerometer(s), gyroscope(s) and a magnetometer) sensor detects translation and rotation movement of the user control device for pointing and selecting within real or virtual three-dimensional space. Haptic (e.g., vibration) feedback units provide tactile feedback to the user to confirm double clicks and similar events.

Abstract translation: 用户控制装置与各种主机系统（包括计算机，电视机和记录的或流式的视频回放设备以及游戏系统）一起操作，被安装到用户的手上。 用户控制装置包括用于捕获音频和图像或视频数据的音频和光学传感器，允许使用语音命令和显示焦点中心对准控制来“滑动”或滚动显示器。 组合的惯性（加速度计，陀螺仪和磁力计）传感器检测用户控制装置的转动和旋转运动，用于在真实或虚拟三维空间内进行指向和选择。 触觉（例如，振动）反馈单元向用户提供触觉反馈以确认双击和类似事件。

公开(公告)号：US20130155953A1

公开(公告)日：2013-06-20

申请号：US13710321

申请日：2012-12-10

Applicant: STMicroelectronics, Inc.

Inventor： Liwen Chu ,  George A. Vlantis

IPC: H04W28/20

CPC classification number: H04W28/20

Abstract: Methods and systems are disclosed for the operation of wireless communication networks, in which communication channels can have possibly overlapping bandwidths of different sizes, including sensor networks operating by the IEEE 802.11ah standard. A first method of signaling to negotiate the channel bandwidth conveys the needed information in the SIG field of the PPDUs of duplicate RTS/CTS frames, and uses the SIG field of PPDUs of duplicated data, control and management frames to perform transmit opportunity protection. A second method of signaling to negotiate the channel bandwidth conveys the needed information in the scrambling sequence field of PPDUs of duplicate RTS, and uses the scrambling sequence field of PPDUs of duplicated data, control and management frames to perform transmit opportunity protection.

Abstract translation: 公开了用于无线通信网络的操作的方法和系统，其中通信信道可以具有可能具有不同大小的重叠带宽，包括由IEEE 802.11ah标准操作的传感器网络。 信令协商通道带宽的第一种方法传达了RTS / CTS帧重复数据帧的SIG字段中所需的信息，并使用复制数据，控制和管理帧的PPDU的SIG字段来执行传输机会保护。 信令协商通道带宽的第二种方法传达了重复RTS的PPDU的加扰序列字段中所需的信息，并使用复制数据，控制和管理帧的PPDU的加扰序列字段来执行传输机会保护。

公开(公告)号：US09980219B2

公开(公告)日：2018-05-22

申请号：US15808592

申请日：2017-11-09

Applicant: STMICROELECTRONICS, INC.

Inventor： Liwen Chu ,  George A. Vlantis

IPC: H04W52/02 ,  H04W8/22 ,  H04W88/02 ,  H04W88/08 ,  H04W84/12

CPC classification number: H04W52/0209 ,  H04W8/22 ,  H04W52/0206 ,  H04W52/0216 ,  H04W52/0222 ,  H04W52/0229 ,  H04W84/12 ,  H04W88/02 ,  H04W88/08 ,  Y02D70/00 ,  Y02D70/142

Abstract: A IEEE 802.11 Wireless Local Area Network (WLAN) system of an access point (AP) and one or more stations (STAs) reduces power consumption and increases battery life of power efficient low power STAs by decreasing the amount of time that a power efficient low power STA remains in an awake state. After indicating power efficient low power operation during association with an AP supporting such operation, the power efficient low power STA may enter the doze state from the time that the power efficient low power STA sends a PS-Poll until the power efficient low power STA receives the buffered DATA frame from the AP. While implementing the power efficient PS-Poll method, the AP can send the buffered DATA frame to the STA SIFS after the AP sends an ACK to the received PS-Poll from the STA.

公开(公告)号：US09826434B2

公开(公告)日：2017-11-21

申请号：US13710321

申请日：2012-12-10

Applicant: STMicroelectronics, Inc.

Inventor： Liwen Chu ,  George A. Vlantis

IPC: H04W28/20 ,  H04W28/22

CPC classification number: H04W28/20

Abstract: Methods and systems are disclosed for the operation of wireless communication networks, in which communication channels can have possibly overlapping bandwidths of different sizes, including sensor networks operating by the IEEE 802.11ah standard. A first method of signaling to negotiate the channel bandwidth conveys the needed information in the SIG field of the PPDUs of duplicate RTS/CTS frames, and uses the SIG field of PPDUs of duplicated data, control and management frames to perform transmit opportunity protection. A second method of signaling to negotiate the channel bandwidth conveys the needed information in the scrambling sequence field of PPDUs of duplicate RTS, and uses the scrambling sequence field of PPDUs of duplicated data, control and management frames to perform transmit opportunity protection.