公开(公告)号：US20140029512A1

公开(公告)日：2014-01-30

申请号：US13685308

申请日：2012-11-26

Applicant: STMICROELECTRONICS, INC.

Inventor： Liwen Chu ,  George A. Vlantis

IPC: H04W12/06

CPC classification number: H04L63/08 ,  H04L63/0892 ,  H04L63/105 ,  H04L63/18 ,  H04W12/06 ,  H04W84/12

Abstract: A wireless local area network system establishes a PASSPOINT™ connection between a mobile station and a hotspot using an enhanced single SSID method or an enhanced dual SSID method. In the dual SSID method, an access point associates and authenticates a mobile device to a secondary SSID of the access point during enrollment and provisioning. After enrollment, the access point authenticates the mobile station to a primary SSID of the access point using the credential that the mobile station received from an online sign-up (“OSU”) server in connection with the secondary SSID. In the single SSID method, an access point performs two levels of authentication. During authentication, communications are limited to an 802.1x controlled port running on the mobile station and access point. After a first authentication, communications between the OSU server and the mobile station are unblocked. After the second authentication, all traffic from the mobile station is unblocked.

Abstract translation: 无线局域网系统使用增强的单个SSID方法或增强型双SSID方法在移动台和热点之间建立PASSPOINT TM连接。 在双SSID方法中，接入点在注册和配置期间将移动设备与接入点的辅助SSID相关联并将其认证。 在注册之后，接入点使用移动台从在线注册（“OSU”）服务器接收到的与辅助SSID相关联的凭证将移动台认证为接入点的主SSID。 在单个SSID方法中，接入点执行两个级别的认证。 在认证期间，通信仅限于在移动台和接入点上运行的802.1x控制端口。 在第一次认证之后，OSU服务器和移动台之间的通信被解除封锁。 在第二次认证之后，来自移动台的所有业务都被解除封锁。

公开(公告)号：US20140029499A1

公开(公告)日：2014-01-30

申请号：US13952397

申请日：2013-07-26

Applicant: STMicroelectronics, Inc.

Inventor： Liwen Chu ,  George A. Vlantis

IPC: H04W52/02

CPC classification number: H04W52/0206 ,  H04W52/0216 ,  H04W72/0446 ,  H04W74/04 ,  Y02D70/142

Abstract: An access point (AP) associated with a several mobile stations (STAs) implements a slot-based power save poll (PS-Poll) method. The AP divides a slot-based access period into multiple time slots and allocates each time slot to either a STA determined to have slot-based PS-Poll capabilities or a STA determined to have buffered data present at the AP. The AP creates a traffic indication map (TIM) having a number of bits equal to the number of stations associated with the AP, and then transmits a beacon including the TIM. The TIM indicates to a slot-based PS-Poll capable STA which time slots are assigned to a selected set of associated stations. After receiving the beacon from the AP, the STA refrains from attempting to communicate with the AP outside the time slot assigned to the STA, yet transmits information to the AP during the time slot assigned to the STA.

Abstract translation: 与几个移动站（STA）相关联的接入点（AP）实现基于时隙的省电轮询（PS-Poll）方法。 AP将基于时隙的接入周期划分成多个时隙，并且将每个时隙分配给被确定为具有基于时隙的PS轮询功能的STA或被确定为具有存在于AP的缓冲数据的STA。 AP创建具有等于与AP关联的站的数量的位数的流量指示图（TIM），然后发送包括TIM的信标。 TIM向基于时隙的PS-Poll功能STA指示哪些时隙被分配给所选择的一组相关联的站。 在从AP接收到信标之后，STA不试图在分配给STA的时隙之外与AP进行通信，而是在分配给STA的时隙内向AP发送信息。

公开(公告)号：US20130155930A1

公开(公告)日：2013-06-20

申请号：US13710282

申请日：2012-12-10

Applicant: STMicroelectronics, Inc.

Inventor： Liwen Chu ,  George A. Vlantis

IPC: H04W52/02

CPC classification number: H04W52/0206 ,  H04W52/0219 ,  Y02D70/142

Abstract: Methods and systems are disclosed for reduced power consumption in communication networks, including sensor networks implemented according to IEEE 802.11ah, by organizing stations into groups having long sleep periods. By organizing the stations of the network into groups, the access point can match each group's traffic identification map with its target beacon transmit time. One embodiment organizes the stations sequentially by AID numbers. Other embodiments organize the stations by similar power save requirements and/or nearby geographical location. Forms of an Extended Traffic Identification Map are matched with an awaken Target Beacon Transmit Time of the group.

Abstract translation: 公开的方法和系统通过将站组织成具有长睡眠周期的群组来降低通信网络中的功耗，包括根据IEEE 802.11ah实现的传感器网络。 通过将网络组合成组，接入点可以将每个组的流量识别图与其目标信标发送时间相匹配。 一个实施例按照AID号顺序组织站。 其他实施例通过类似的省电要求和/或附近的地理位置组织站。 扩展流量识别图的形式与组的唤醒目标信标发送时间相匹配。

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：US09991996B2

公开(公告)日：2018-06-05

申请号：US15006191

申请日：2016-01-26

Applicant: STMicroelectronics, Inc.

Inventor： Liwen Chu ,  George A. Vlantis

IPC: H04L5/00 ,  H04L1/16 ,  H04W72/12 ,  H04W72/04 ,  H04W74/08 ,  H04W84/12

CPC classification number: H04L5/003 ,  H04L1/16 ,  H04L1/1607 ,  H04L1/1854 ,  H04L5/0007 ,  H04L5/0037 ,  H04W72/04 ,  H04W72/121 ,  H04W72/1289 ,  H04W74/0816 ,  H04W84/12

Abstract: An access point (AP) contends for a medium during a contention period in order to obtain exclusive control of the medium for a certain time period that may include one or more transmission opportunities. The AP and client stations (STAs) communicate during the time period using orthogonal frequency division multiple access (OFDMA) techniques with scheduled use (i.e., allocation) of sub-channels of the medium. The AP controls this scheduling for down-link and up-link communications by sending control signaling to inform the STAs of the resource allocation schedule which specifies STAs involved in the OFDMA communications along with the sub-channel identification bandwidth allocated to each STA. The control signaling may be a combination of physical layer (PHY) and medium access control layer (MAC) communicated information.

公开(公告)号：US09838963B2

公开(公告)日：2017-12-05

申请号：US15365600

申请日：2016-11-30

Applicant: STMICROELECTRONICS, INC.

Inventor： Liwen Chu ,  George A. Vlantis

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

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.