公开(公告)号：US20180241531A1

公开(公告)日：2018-08-23

申请号：US15962831

申请日：2018-04-25

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Xiaofei Wang ,  Hanqing Lou ,  Monisha Ghosh ,  Sudheer A. Grandhi

IPC: H04L5/00 ,  H04L1/18 ,  H04L1/16

Abstract: A method and apparatus for operation by an access point (AP) is provided. The method may comprise receiving a first frame from a first STA, the first frame including first data and receiving a second frame from a second STA, the second frame including second data. In response to the receiving, an acknowledgement (ACK) frame may be transmitted to the first STA and to the second STA. The ACK frame may be addressed to a broadcast address and include a field which indicates whether the ACK frame is a multiple traffic identifier (multi-TID) block ACK frame format or another ACK frame format.

公开(公告)号：US20180213411A1

公开(公告)日：2018-07-26

申请号：US15852276

申请日：2017-12-22

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Xiaofei Wang ,  Guodong Zhang

IPC: H04W16/28 ,  H04W74/08 ,  H04B7/06 ,  H04W72/04 ,  H04W84/12

Abstract: A method and apparatus may be used for WiFi sectorization medium access control enhancement (WiSE MAC). An IEEE 802.11 STA may receive an omni-directional indication of a first sectorized transmission opportunity (TXOP) associated with a second STA. The omni-directional indication may include an identifier (ID) of a first sector associated with the first sectorized TXOP. The STA may transmit a directional indication of a second sectorized TXOP a condition that a second sector associated with the second sectorized TXOP does not interfere with the first sector associated with the first sectorized TXOP.

公开(公告)号：US10034245B2

公开(公告)日：2018-07-24

申请号：US15335689

申请日：2016-10-27

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Xiaofei Wang ,  Guodong Zhang

IPC: G08C17/00 ,  H04W52/02 ,  H04W72/04 ,  H04W72/12 ,  H04W74/08 ,  H04W84/12 ,  H04L1/00 ,  H04L1/16

Abstract: A method, a wireless transmit/receive unit (WTRU) and a base station for transferring small packets are described. The WTRU generates a packet that has one or more of a medium access control (MAC) or a physical layer convergence protocol (PLCP) header, the one or more of the MAC or the PLCP header including a field. On a condition that the WTRU has data buffered for transmission, the WTRU includes in the field information that indicates a time or a transmission opportunity (TXOP) needed to transmit at least one packet of data that the WTRU has buffered for transmission. The WTRU transmits the packet to another WTRU in the wireless network. The WTRU receives another packet from the other WTRU with a granted TXO) based on the time needed to transmit the at least one packet of the data that the WTRU has buffered for transmission.

公开(公告)号：US09980296B2

公开(公告)日：2018-05-22

申请号：US14760347

申请日：2014-01-10

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Xiaofei Wang ,  Guodong Zhang

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

CPC classification number: H04W74/0875 ,  H04L1/1671 ,  H04W72/04 ,  H04W72/1289 ,  H04W74/002 ,  H04W74/004 ,  H04W74/0891 ,  H04W84/12

Abstract: A method and apparatus for communication in a network of WLAN overlapping basic service set (OBSS) are disclosed. A station or an access point may indicate its interference reporting and inter-BSS coordination capabilities in a message. At least one of quality of service (QoS) settings, transmission opportunity (TXOP), restricted access window (RAW) or beacon subinterval schedules, or traffic indication map (TIM) or uplink access window assignment may be coordinated. The station may receive a request for interference measurements on the basic service set (BSS) of the station or neighboring BSSs that the station can overhear. The station may transmit an interference measurement report to an access point. The coordination may be performed based on the interference measurement report. Furthermore, STAs may transmit channel or sector preferences to APs and receive channel or sector assignments.

公开(公告)号：US20180115922A1

公开(公告)日：2018-04-26

申请号：US15850841

申请日：2017-12-21

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Xiaofei Wang ,  Lei Wang ,  Sudheer A. Grandhi ,  Guodong Zhang

IPC: H04W28/02 ,  H04W52/02 ,  H04W72/12

CPC classification number: H04W28/0278 ,  H04W52/0216 ,  H04W52/0219 ,  H04W72/1289 ,  Y02B70/30 ,  Y02D70/1222 ,  Y02D70/1226 ,  Y02D70/1242 ,  Y02D70/1244 ,  Y02D70/1246 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/23

Abstract: A method for receiving a backoff value at a wireless station is presented. A traffic indication map is received at the station, wherein a backoff number is implicitly assigned to the station based on a position of the station within the traffic indication map. The backoff value is determined by multiplying the backoff number by a predetermined time value.

公开(公告)号：US09793975B2

公开(公告)日：2017-10-17

申请号：US14760103

申请日：2014-01-10

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Guodong Zhang ,  Xiaofei Wang ,  Hanqing Lou ,  Sudheer A. Grandhi

IPC: H04J1/10 ,  H04B7/155 ,  H04W40/24 ,  H04W52/02 ,  H04W84/12

CPC classification number: H04B7/15507 ,  H04W40/244 ,  H04W52/0216 ,  H04W52/0229 ,  H04W84/12 ,  Y02D70/00 ,  Y02D70/1226 ,  Y02D70/1242 ,  Y02D70/1244 ,  Y02D70/1246 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/23

Abstract: A method for associating a new end-station (end-STA) with a relay access point (R-AP) in a relay transmission. An assignment of a new identifier is transmitted to the new end-STA, wherein traffic indication map indications for the new end-STA in a beacon from the R-AP follows the transmission of the new identifier assignment. A message is sent to a root access point (AP), the message including an indication of a number of information fields in the message and at least one information field, each of the at least one information fields including an identifier of one end-STA associated with the R-AP. An acknowledgement is received from the root AP on a condition that the root AP correctly receives the message and associates an identifier of the end-STA with an identifier of the R-AP.

公开(公告)号：US09763178B2

公开(公告)日：2017-09-12

申请号：US15354775

申请日：2016-11-17

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Guodong Zhang ,  Lei Wang ,  Xiaofei Wang ,  Joseph S. Levy ,  Robert L. Olesen

IPC: H04W48/16 ,  H04W72/04 ,  H04W48/10 ,  H04W48/14 ,  H04W84/12 ,  H04W88/08

CPC classification number: H04W48/16 ,  H04L61/6022 ,  H04W12/06 ,  H04W48/10 ,  H04W48/14 ,  H04W72/04 ,  H04W72/0446 ,  H04W84/12 ,  H04W88/08

Abstract: A method for active scanning in a wireless network may include two transmitters. In such a method, the following steps may take place: initiating active scanning on at least one of a plurality of channels; waiting to transmit a first probe request on a first channel of the plurality of channels based on a delay timer; receiving at the first STA, while the delay timer is not expired, a probe request from a second STA; and skipping the first probe request on the first channel of the plurality of channels based on information contained in the received probe request from the second STA.

公开(公告)号：US20170019865A1

公开(公告)日：2017-01-19

申请号：US15123829

申请日：2015-03-12

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Xiaofei Wang ,  Guodong Zhang ,  Robert L. Olesen

IPC: H04W52/34 ,  H04W48/08 ,  H04W52/24

CPC classification number: H04W52/34 ,  H04W48/08 ,  H04W48/12 ,  H04W48/14 ,  H04W52/241 ,  H04W84/12

Abstract: A method and apparatus may be used to perform efficient network transitions. One or more of Probe Request frames that an AP may receive or process as valid may be modified by including a transmit power for the Probe Request frame. A Probe Request frame may be transmitted at less than full power. BSS transitions may be enhanced by indicating reasons for the transition, security information, or quality of service (QoS) information. Overhead associated with tracking long-sleeping STAs may be managed through the use of multiple values for a maximum idle period in a BSS.

Abstract translation: 可以使用方法和装置来执行有效的网络转换。 AP可以接收或处理为有效的一个或多个探测请求帧可以通过包括探测请求帧的发射功率来修改。 可以以小于全功率的方式发送探测请求帧。 可以通过指示转换的原因，安全信息或服务质量（QoS）信息来增强BSS转换。 跟踪长睡眠STA相关联的开销可以通过使用BSS中的最大空闲周期的多个值来管理。

公开(公告)号：US09504032B2

公开(公告)日：2016-11-22

申请号：US14025023

申请日：2013-09-12

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Xiaofei Wang ,  Guodong Zhang

IPC: G08C17/00 ,  H04W72/04 ,  H04W72/12 ,  H04W74/08 ,  H04W84/12 ,  H04L1/00 ,  H04L1/16

CPC classification number: H04W52/0235 ,  H04L1/0083 ,  H04L1/1607 ,  H04W72/0446 ,  H04W72/1284 ,  H04W74/08 ,  H04W84/12 ,  Y02D70/00 ,  Y02D70/1222 ,  Y02D70/1226 ,  Y02D70/1242 ,  Y02D70/1244 ,  Y02D70/1246 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/23

Abstract: A method, a wireless transmit/receive unit (WTRU) and a base station for transferring small packets are described. The WTRU generates a packet that has one or more of a medium access control (MAC) or a physical layer convergence protocol (PLCP) header, the one or more of the MAC or the PLCP header including a field. On a condition that the WTRU has data buffered for transmission, the WTRU includes in the field information that indicates a time or a transmission opportunity (TXOP) needed to transmit at least one packet of data that the WTRU has buffered for transmission. The WTRU transmits the packet to another WTRU in the wireless network. The WTRU receives another packet from the other WTRU with a granted TXO) based on the time needed to transmit the at least one packet of the data that the WTRU has buffered for transmission.

Abstract translation: 描述了一种方法，无线发射/接收单元（WTRU）和用于传送小分组的基站。 WTRU生成具有介质访问控制（MAC）或物理层汇聚协议（PLCP）报头中的一个或多个的分组，MAC或PLCP头中的一个或多个包括字段。 在WTRU具有缓冲用于传输的数据的条件下，WTRU在该字段中包括指示发送WTRU已经缓冲以进行传输的至少一个数据包所需的时间或传输机会（TXOP）的信息。 WTRU在无线网络中将分组传输到另一WTRU。 基于发送WTRU已经缓冲用于传输的数据的至少一个分组所需的时间，WTRU从具有授权TXO的另一个WTRU接收另一个分组）。

公开(公告)号：US20160286469A1

公开(公告)日：2016-09-29

申请号：US15033634

申请日：2014-11-07

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Xiaofei Wang ,  Guodong Zhang

IPC: H04W48/16

CPC classification number: H04W48/16 ,  H04W48/14 ,  H04W74/006 ,  H04W84/12

Abstract: Systems, methods, and instrumentalities are disclosed for reducing contention in a wireless network. An IEEE 802.11 station (STA) may send a request frame to an IEEE 802.11 access point (AP). The AP may be able to accommodate the IEEE 802.11 STA. The STA may receive a response frame that may include a basic service set (BSS) discovery policy. The IEEE 802.11 STA may send a revised request frame, when the indicated BSS discover method is active scanning. The revised request frame may be sent based on the BSS discovery policy received from the IEEE 802.11 AP during the period of time. The IEEE 802.11 STA may send the revised request frame, e.g., when time elapsed since last second request exceeds an active scanning interval. The IEEE 802.11 STA may refrain from sending the second request frame, e.g., when the indicated BSS discovery method received from the IEEE 802.11 AP is passive scanning.

Abstract translation: 公开了用于减少无线网络中的争用的系统，方法和工具。 IEEE 802.11站（STA）可以向IEEE 802.11接入点（AP）发送请求帧。 AP可能能够容纳IEEE 802.11 STA。 STA可以接收可以包括基本服务集（BSS）发现策略的响应帧。 当指示的BSS发现方法是主动扫描时，IEEE 802.11 STA可以发送修改的请求帧。 修改的请求帧可以基于在该时间段期间从IEEE 802.11 AP接收的BSS发现策略来发送。 IEEE 802.11 STA可以发送经修改的请求帧，例如，当从上次第二请求超过主动扫描间隔起经过的时间。 IEEE 802.11 STA可以避免发送第二请求帧，例如，当从IEEE 802.11 AP接收到的指示的BSS发现方法是被动扫描时。