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.

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：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：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。