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：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.

公开(公告)号：US09661573B2

公开(公告)日：2017-05-23

申请号：US14953977

申请日：2015-11-30

Applicant: STMICROELECTRONICS, INC.

Inventor： Liwen Chu ,  George A. Vlantis

IPC: H04W52/02 ,  H04L29/12 ,  H04W8/26 ,  H04W84/12 ,  H04W74/00 ,  H04W74/08 ,  H04W12/06 ,  H04W76/02

CPC classification number: H04W52/0222 ,  H04L29/1232 ,  H04L29/12839 ,  H04L61/2092 ,  H04L61/6022 ,  H04W8/26 ,  H04W12/06 ,  H04W52/0216 ,  H04W74/006 ,  H04W74/08 ,  H04W76/14 ,  H04W84/12 ,  Y02D70/142

Abstract: Multiple virtual MAC addresses may be added to WGA devices that may have different traffic streams to another device that requires different services, thus creating distinct MAC and device level implications. Beamforming training can be done at the device level for all virtual MAC addresses. Wakeup, doze, and ATIM power save can be done at the device level depending on the frames received. Authentication, deauthentication, association, and deassociation can be done variously at both levels. Further MSDUs can be aggregated for the multiple MAC addresses.

公开(公告)号：US09554324B2

公开(公告)日：2017-01-24

申请号：US14051583

申请日：2013-10-11

Applicant: STMicroelectronics, Inc.

Inventor： Liwen Chu ,  George A. Vlantis

IPC: H04W40/24 ,  H04W48/16 ,  H04W8/00 ,  H04W48/12

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：US09538525B2

公开(公告)日：2017-01-03

申请号：US14148047

申请日：2014-01-06

Applicant: STMicroelectronics, Inc.

Inventor： Liwen Chu ,  George A. Vlantis

IPC: H04W74/04 ,  H04W72/00 ,  H04W72/04 ,  H04L12/43

CPC classification number: H04W72/0446 ,  H04L12/43 ,  H04W72/005 ,  H04W74/04

Abstract: Methods and apparatus for implementing a robust unicast/broadcast/multicast protocol are provided. In one aspect, a method of avoiding collision of intra-basic service set unicast, broadcast or multicast transmissions notifies stations in the basic service set of a reserved transmit opportunity for a unicast, broadcast or multicast transmission. Transmissions from at least one station in the basic service set are deferred until after the reserved unicast, broadcast or multicast transmit opportunity.

Abstract translation: 提供了用于实现鲁棒的单播/广播/多播协议的方法和装置。 在一个方面，避免基本内部服务设置单播，广播或多播传输的冲突的方法通知用于单播，广播或多播传输的预留发送机会的基本服务集中的站。 基本服务集中的至少一个站的传输延迟到保留的单播，广播或多播发送机会之后。

公开(公告)号：US09462538B2

公开(公告)日：2016-10-04

申请号：US14520828

申请日：2014-10-22

Applicant: STMICROELECTRONICS, INC. ,  STMICROELECTRONICS S.R.L.

Inventor： Liwen Chu ,  George A. Vlantis ,  Vincenzo Scarpa

IPC: H04L12/28 ,  H04W48/14 ,  H04W72/12 ,  H04W84/18 ,  H04W40/34 ,  H04W48/08 ,  H04W72/02 ,  H04W84/12 ,  H04W84/22

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.

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。