公开(公告)号：US20210234642A1

公开(公告)日：2021-07-29

申请号：US17229379

申请日：2021-04-13

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Xiaofei WANG ,  Guodong ZHANG ,  Joseph S. LEVY

IPC: H04L1/18 ,  H04L1/16 ,  H04W52/02

Abstract: A method for high efficiency (HE) acknowledgement transmission may be performed by a station (STA) in a wireless local area network (WLAN) system. The method may include receiving a downlink (DL) frame indicating a resource allocation for the STA to transmit an uplink (UL) transmission. It may further include transmitting an acknowledgement frame in a single-user (SU) transmission or multi-user (MU) transmission, where the acknowledgement frame includes an indication of an operation mode change.

公开(公告)号：US20160330765A1

公开(公告)日：2016-11-10

申请号：US15035123

申请日：2014-11-07

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Joseph S. LEVY ,  Joseph A. KWAK ,  Ronald MURIAS

IPC: H04W74/04 ,  H04W28/04 ,  H04W74/00 ,  H04W76/02

CPC classification number: H04W74/04 ,  H04W74/006 ,  H04W74/085 ,  H04W76/15 ,  H04W88/06

Abstract: A method and apparatus are disclosed for enabling high-efficiency communication in wireless local area network (WLAN) systems. A station (STA) may receive an Uplink Priority List (UPL) from an access point (AP). In one example embodiment, a STA may send a request for prioritized access to an AP. The STA may then receive an ordered queue of STAs granted contention free prioritized access in a predetermined time interval, which may be referred to as the Exclusive Priority Access (EPA) period. The STA may then determine whether it is identified in the ordered queue of STAs granted prioritized access. The STA may then access a medium such as a Carrier Sense Multiple Access (CSMA) wireless medium associated with the IEEE 802.11 network, in turn with other STAs in the ordered queue per the queue order during the predetermined time interval using an inter-frame spacing, thereby enabling contention free access.

Abstract translation: 公开了用于实现无线局域网（WLAN）系统中的高效率通信的方法和装置。 站（STA）可以从接入点（AP）接收上行优先级列表（UPL）。 在一个示例性实施例中，STA可以向AP发送对优先级访问的请求。 然后，STA可以在预定的时间间隔内接收授予无竞争优先权访问的STA的有序队列，其可以被称为独占优先级访问（EPA）周期。 然后STA可以确定是否在授予优先级访问的STA的有序队列中识别它。 然后，STA可以在预定时间间隔期间依次按照每个队列顺序访问诸如与IEEE 802.11网络相关联的载波侦听多路访问（CSMA）无线介质的介质，并且使用帧间隔 ，从而实现无争用的访问。

公开(公告)号：US20180302194A1

公开(公告)日：2018-10-18

申请号：US15766201

申请日：2016-10-10

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Xiaofei WANG ,  Guodong ZHANG ,  Joseph S. LEVY

IPC: H04L1/18 ,  H04W52/02 ,  H04L1/16

Abstract: A wireless transmit/receive unit (WTRU) communicating in a wireless local area network (WLAN) system may use efficient acknowledgement (ACK) setup and transmission procedures in conjunction with other transmission and power saving techniques, such as target wake time/restricted access window (TWT/RAW), power save multi-poll (PSMP) and/or transmission opportunity (TXOP) mechanisms. In an example, a WTRU may transmit a frame including an indication that a TWT/RAW (or TXOP) period is scheduled, an indication that multi-WTRU acknowledgement (ACK)/block ACK (BA) will be used for acknowledgement, and/or targeted transmission time(s) for the transmission of multi-WTRU ACK/BA frame(s). The WTRU may trigger the start of the TWT/RAW period, and may receive at least one data frame from another WTRU(s). The WTRU may transmit multi-WTRU ACK/BA frame(s) during the targeted transmission time(s) to acknowledge the at least one data frame received from the other WTRU(s).

公开(公告)号：US20180124757A1

公开(公告)日：2018-05-03

申请号：US15852478

申请日：2017-12-22

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Diana PANI ,  Benoit PELLETIER ,  Sylvie GOMES ,  Christopher R. CAVE ,  Fengjun XI ,  Joseph S. LEVY ,  Hong ZHANG

IPC: H04W72/04 ,  H04W72/12

CPC classification number: H04W72/042 ,  H04W72/121 ,  H04W72/1289

Abstract: A method, apparatus, and system for multiple wireless transmit/receive units (WTRUs) communicating with a base station are disclosed. A base station, such as an eNB, may assign each WTRU of a plurality of WTRUs a portion of a transmission time interval (TTI) and then send that assignment to each respective WTRU in a control channel. The base station may then send data to one or more WTRUs in their respective assigned portions on a physical downlink shared channel (PDSCH). The portion may be one or a plurality of a time slots. The portion may be a fraction of the TTI.

公开(公告)号：US20150373572A1

公开(公告)日：2015-12-24

申请号：US14766044

申请日：2014-02-05

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Onur SAHIN ,  Arnab ROY ,  Yugeswar DEENOO ,  Ravikumar V. PRAGADA ,  Philip J. PIETRASKI ,  Joseph S. LEVY ,  Tao DENG

IPC: H04W24/10 ,  H04W16/30 ,  H04W24/02 ,  H04W72/12

CPC classification number: H04W24/10 ,  H04B7/0617 ,  H04W16/10 ,  H04W16/28 ,  H04W16/30 ,  H04W24/02 ,  H04W72/1231 ,  H04W84/18

Abstract: Techniques may be used for interference measurement and management in directional mesh networks, including centralized and/or distributed approaches. A centralized node, such as an operations and maintenance (OAM) center, may use feedback from nodes in the mesh network to partition the nodes in the mesh network into clusters based on interference levels. Interference measurement reports may be used by the centralized node to update cluster membership. An initiating node in the mesh network may use topographical information to generate an initial interference cluster, and interference measurement frame (IMF) scheduling information may be used to schedule transmissions within the interference clusters. Techniques for opportunistic measurement campaigns, simultaneous measurement campaigns, link failure detection, and link re-acquisition in directional mesh networks may also be used.

Abstract translation: 技术可用于定向网状网络中的干扰测量和管理，包括集中式和/或分布式方法。 诸如操作和维护（OAM）中心的集中式节点可以使用来自网状网络中的节点的反馈，以将网状网络中的节点基于干扰级别划分成簇。 中央节点可以使用干扰测量报告来更新集群成员资格。 网状网络中的发起节点可以使用地形信息来生成初始干扰群集，并且可以使用干扰测量帧（IMF）调度信息来调度干扰群集内的传输。 也可以使用用于机会主义测量活动，同时测量活动，链路故障检测和定向网状网络中的链路重新获取的技术。