公开(公告)号：US09979710B2

公开(公告)日：2018-05-22

申请号：US13685308

申请日：2012-11-26

Applicant: STMicroelectronics, Inc.

Inventor： Liwen Chu ,  George A. Vlantis

IPC: H04L29/06 ,  H04W12/06 ,  H04W84/12

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.

公开(公告)号：US09847988B2

公开(公告)日：2017-12-19

申请号：US14949293

申请日：2015-11-23

Applicant: STMICROELECTRONICS, INC.

Inventor： Liwen Chu ,  George A. Vlantis

IPC: H04L29/06 ,  H04W12/06 ,  H04W84/12

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.

公开(公告)号：US09706492B2

公开(公告)日：2017-07-11

申请号：US14965014

申请日：2015-12-10

Applicant: STMICROELECTRONICS, INC.

Inventor： Liwen Chu ,  George A. Vlantis

IPC: H04W52/02 ,  H04W72/12 ,  H04W40/00 ,  H04W84/10 ,  H04W84/12

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.

公开(公告)号：US09544847B2

公开(公告)日：2017-01-10

申请号：US15213107

申请日：2016-07-18

Applicant: STMicroelectronics, Inc.

Inventor： Liwen Chu ,  George A. Vlantis

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

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.

Abstract translation: 接入点（AP）和一个或多个站（STA）的IEEE 802.11无线局域网（WLAN）系统通过减少功率有效低的时间量来降低功率消耗并增加功率有效的低功率STA的电池寿命 电源STA保持在唤醒状态。 在与支持这种操作的AP相关联之后指示功率有效的低功率操作之后，功率有效的低功率STA可以从功率有效的低功率STA发送PS-Poll直到功率有效的低功率STA接收到的时候进入打盹状态 来自AP的缓冲的DATA帧。 在实现功率有效的PS-Poll方法时，AP可以在AP从STA发送ACK到接收的PS-Poll之后将缓冲的DATA帧发送到STA SIFS。

公开(公告)号：US20160330683A1

公开(公告)日：2016-11-10

申请号：US15213107

申请日：2016-07-18

Applicant: STMicroelectronics, Inc.

Inventor： Liwen Chu ,  George A. Vlantis

IPC: H04W52/02 ,  H04W8/22

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.

Abstract translation: 接入点（AP）和一个或多个站（STA）的IEEE 802.11无线局域网（WLAN）系统通过减少功率有效低的时间量来降低功率消耗并增加功率有效的低功率STA的电池寿命 电源STA保持在唤醒状态。 在与支持这种操作的AP相关联之后指示功率有效的低功率操作之后，功率有效的低功率STA可以从功率有效的低功率STA发送PS-Poll直到功率有效的低功率STA接收到的时候进入打盹状态 来自AP的缓冲的DATA帧。 在实现功率有效的PS-Poll方法时，AP可以在AP从STA发送ACK到接收的PS-Poll之后将缓冲的DATA帧发送到STA SIFS。

公开(公告)号：US20160226635A1

公开(公告)日：2016-08-04

申请号：US15006191

申请日：2016-01-26

Applicant: STMicroelectronics, Inc.

Inventor： Liwen Chu ,  George A. Vlantis

IPC: H04L5/00 ,  H04W72/04

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.

Abstract translation: 接入点（AP）在竞争期间争夺媒体，以便获得可能包括一个或多个传输机会的特定时间段的媒体的排他性控制。 AP和客户站（STA）在该时间段期间使用正规频分多址（OFDMA）技术与媒体的子信道的调度使用（即，分配）进行通信。 AP通过发送控制信令来控制用于下行链路和上行链路通信的调度，以向STA通知资源分配调度，其指定在OFDMA通信中涉及的STA以及分配给每个STA的子信道标识带宽。 控制信令可以是物理层（PHY）和介质访问控制层（MAC）传送信息的组合。

公开(公告)号：US08976762B2

公开(公告)日：2015-03-10

申请号：US13874207

申请日：2013-04-30

Applicant: STMicroelectronics, Inc.

Inventor： George A. Vlantis ,  Wendong Hu

IPC: H04L12/50 ,  H04Q11/00 ,  H04W4/00 ,  H04B1/38 ,  H04L5/16 ,  H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H03C3/00 ,  H03K7/06 ,  H04L27/12 ,  H04B1/40 ,  H04B1/18 ,  H04B1/16 ,  H04B1/26 ,  H04B15/00 ,  H04M1/00 ,  H04B1/28 ,  H04W24/00 ,  H04W74/00 ,  H04W84/10

CPC classification number: H04B1/40 ,  H04B1/28 ,  H04W24/00 ,  H04W74/00 ,  H04W84/10

Abstract: Radio frequency (RF) architectures for spectrum access networks are provided. Embodiments of the invention generally provide a radio frequency (RF) architecture for customer premise equipment (CPE) for use in, for example, IEEE 802.22 wireless regional area networks (WRANs). In some embodiments, the CPE RF architecture includes two receive chains with a directional antenna and an omni-directional antenna, respectively. The CPE RF architecture facilitates opportunistic out-of-band spectrum sensing and WRAN signal receiving that are performed in parallel with data transmission.

Abstract translation: 提供了频谱接入网络的射频（RF）架构。 本发明的实施例通常提供用于在例如IEEE 802.22无线区域网（WRAN）中使用的客户驻地设备（CPE）的射频（RF）架构。 在一些实施例中，CPE RF架构分别包括具有定向天线和全向天线的两个接收链。 CPE RF架构有助于与数据传输并行执行的机会性带外频谱感测和WRAN信号接收。

公开(公告)号：US20130155952A1

公开(公告)日：2013-06-20

申请号：US13710298

申请日：2012-12-10

Applicant: STMicroelectronics, Inc.

Inventor： Liwen Chu ,  George A. Vlantis

IPC: H04L12/56

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-1GHz networks, including those of the 802.11 ah 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，以满足诸如Sub-1GHz网络（包括802.11ah标准）的网络需求，以及具有大量台站以低数据速率传输的传感器网络。 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：US20160080351A1

公开(公告)日：2016-03-17

申请号：US14949293

申请日：2015-11-23

Applicant: STMICROELECTRONICS, INC.

Inventor： Liwen Chu ,  George A. Vlantis

IPC: H04L29/06 ,  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型单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：US09191889B2

公开(公告)日：2015-11-17

申请号：US13952397

申请日：2013-07-26

Applicant: STMicroelectronics, Inc.

Inventor： Liwen Chu ,  George A. Vlantis

IPC: H04W52/02 ,  H04W74/04 ,  H04W72/04

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。