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1. 发明申请

WO2012177993A1 METHOD AND APPARATUS FOR RECEIVING A PREAMBLE IN A WIRELESS COMMUNICATION SYSTEM 审中-公开
标题翻译：用于在无线通信系统中接收前缀的方法和装置
公开(公告)号：WO2012177993A1
公开(公告)日：2012-12-27
申请号：PCT/US2012/043725
申请日：2012-06-22
申请人： INTERDIGITAL PATENT HOLDINGS, INC. , GHOSH, Monisha , SHAH, Nirav B. , GRANDHI, Sudheer A. , MURIAS, Ronald G. , ZHANG, Guodong , WANG, Xiaofei , LOU, Hanqing , OLESEN, Robert L.
发明人： GHOSH, Monisha , SHAH, Nirav B. , GRANDHI, Sudheer A. , MURIAS, Ronald G. , ZHANG, Guodong , WANG, Xiaofei , LOU, Hanqing , OLESEN, Robert L.
IPC分类号： H04L5/00
CPC分类号： H04L5/0023 , H04L1/0025 , H04L1/0041 , H04L1/0059 , H04L1/0061 , H04L5/0048 , H04L5/0053 , H04L25/0226
摘要： Method and apparatus for transmission and reception of a Greenfield preamble are provided. In the method and apparatus, the Greenfield preamble may be a single user (SU) preamble or a multi user (MU) preamble. As an MU preamble, the Greenfield preamble includes a short training field (STF), a first long training field (LTF), a first signal (SIG) field, at least one additional LTF, and a second SIG field. Additionally, the Greenfield preamble may be utilized for efficient transmission and reception of control information to wireless devices, whereby the control information may be indicated using the STF, the first LTF, or the first or second SIG fields.
摘要翻译：提供了一种用于发送和接收绿田前置码的方法和装置。在该方法和装置中，格林菲尔德前导码可以是单用户（SU）前导码或多用户（MU）前导码）。作为MU前导码，绿田前置码包括短训练场（STF），第一长训练场（LTF），第一信号（SIG）场，至少一个附加的LTF和第二SIG场。此外，绿田前置码可用于向无线设备的控制信息的有效发送和接收，由此可以使用STF，第一LTF或第一或第二SIG字段来指示控制信息。

2. 发明申请

WO2012149178A3 OPEN LOOP SPATIAL PROCESSING 审中-公开
公开(公告)号：WO2012149178A3
公开(公告)日：2012-11-01
申请号：PCT/US2012/035239
申请日：2012-04-26
申请人： INTERDIGITAL PATENT HOLDINGS, INC. , NAZAR, Shahrokh Nayeb , OLESEN, Robert L. , RAGHAVAN, Manasa , FAZILI, Muhammad U. , LAWTON, William E. , LI, Yingxue K.
发明人： NAZAR, Shahrokh Nayeb , OLESEN, Robert L. , RAGHAVAN, Manasa , FAZILI, Muhammad U. , LAWTON, William E. , LI, Yingxue K.
IPC分类号： H04B7/04 , H04B7/02
摘要： Methods and apparatus for multiple-input multiple-output (MIMO) transmissions are disclosed. A base station may precode wireless transmit/receive unit (WTRU)-specific reference signals and data that are transmitted to a WTRU using a randomly selected precoder. The precoder may be selected based on a predefined precoder selection sequence or by the base station. A different precoder may be applied to different resource blocks (RBs). In addition, a large delay cyclic delay diversity (CDD) or discrete Fourier transform (DFT) spreading may be applied on the WTRU-specific reference signals and the data. For heterogeneous deployed antennas, spatial diversity gain is achieved by dynamically scheduling resources between transmission points. A hopping scheme may be applied across the transmission points as the resources are dynamically partitioned between the transmission points. A different randomly selected precoder may be applied to each RB transmitted from a different transmission point.

3. 发明申请

WO2009015315A1 METHOD AND APPARATUS FOR REDUCING SIGNALING OVERHEAD DURING A DUAL CODEWORD HYBRID AUTOMATIC REPEAT REQUEST OPERATION 审中-公开
标题翻译：双代码混合自动重复请求操作期间减少信令的方法和装置
公开(公告)号：WO2009015315A1
公开(公告)日：2009-01-29
申请号：PCT/US2008/071126
申请日：2008-07-25
申请人： INTERDIGITAL TECHNOLOGY CORPORATION , ZHANG, Guodong , OLESEN, Robert L.
发明人： ZHANG, Guodong , OLESEN, Robert L.
IPC分类号： H04L1/18 , H04L1/00
CPC分类号： H04L1/1812 , H04L1/0029
摘要： A method and an apparatus for reducing overhead in signaling for downlink dual codewords in a wireless transmit receive unit (WTRU) with spatial multiplexing are disclosed. The method includes signaling a number of codewords to be used, signaling modulation scheme coding, reducing overhead for signaling of transport block size (TBS), and/or reducing overhead for signaling associated with error correction.
摘要翻译：公开了一种用于在具有空间复用的无线发射接收单元（WTRU）中减少用于下行链路双码字的信令中的开销的方法和装置。该方法包括发送要使用的多个码字，信令调制方案编码，减少用于传送块大小（TBS）的信令的开销，和/或减少与纠错有关的信令的开销。

4. 发明申请

WO2019213565A1 FULL DUPLEX OPPORTUNITY DISCOVERY AND TRANSMISSION FOR ASYMMETRIC FULL DUPLEX WIRELESS LOCAL AREA NETWORKS (WLANS) 审中-公开
公开(公告)号：WO2019213565A1
公开(公告)日：2019-11-07
申请号：PCT/US2019/030659
申请日：2019-05-03
申请人： INTERDIGITAL PATENT HOLDINGS, INC.
发明人： OTERI, Oghenekome , ZHANG, Guodong , SUN, Li-Hsiang , OLESEN, Robert L.
IPC分类号： H04W74/00 , H04L5/14 , H04W74/02 , H04W84/12
摘要： Methods and apparatuses are described herein for full-duplex transmission opportunity discovery and transmission in a wireless 802.11 network A full duplex compatible access point may transmit a full duplex (FD) transmission opportunity (TxOP) setup frame to a plurality of wireless transmit/receive units (WTRUs). This enables each of the plurality of WTRUs to transmit a measurement frame for interference measurement by the each of the other WTRUs to determine which WTRUs may participate in FD communication. Feedback is received by the AP and the AP determines which of the plurality of WTRUs the AP can perform FD communication with based on the feedback. FD communication with the determined WTRUs is then commenced

5. 发明申请

WO2017044420A1 METHODS, APPARATUS AND SYSTEMS FOR CHANNEL ESTIMATION AND SIMULTANEOUS BEAMFORMING TRAINING FOR MULTI-INPUT MULTI-OUTPUT (MIMO) COMMUNICATIONS 审中-公开
标题翻译：用于多输入多输出（MIMO）通信的信道估计和同步波束训练的方法，装置和系统
公开(公告)号：WO2017044420A1
公开(公告)日：2017-03-16
申请号：PCT/US2016/050399
申请日：2016-09-06
申请人： INTERDIGITAL PATENT HOLDINGS, INC.
发明人： SAHIN, Alphan , YANG, Rui , LOU, Hanqing , OTERI, Oghenekome , OLESEN, Robert L. , XI, Fengjun
IPC分类号： H04L5/00 , H04B7/06 , H04L25/02 , H04L27/26 , H04B7/04
CPC分类号： H04L25/0204 , H04B7/0452 , H04B7/0617 , H04B7/0626 , H04L5/0023 , H04L5/0053 , H04L27/2613
摘要： Methods, apparatuses, and systems to enable a channel estimation of more than one channel for Multi-Input Multi-Output (MIMO) communications in a wireless network is provided. The method includes determining a first set of complex numbers comprising first channel estimation signal associated with a first channel, determining a second set of complex numbers comprising second channel estimation signal associated with a second channel, and transmitting the first set of complex numbers and the second set of complex numbers via a physical layer (PHY) frame, wherein the second set of complex numbers are complex conjugates of the first set of complex numbers.
摘要翻译：提供了在无线网络中实现多输入多输出（MIMO）通信的多于一个信道的信道估计的方法，装置和系统。该方法包括确定第一组复数，其包括与第一信道相关联的第一信道估计信号，确定包括与第二信道相关联的第二信道估计信号的第二组复数，以及发送第一组复数，第二组复数经由物理层（PHY）帧的一组复数，其中第二组复数是第一组复数的复共轭。

6. 发明申请

WO2016176595A1 TRIGGERED TRANSMISSION OPPORTUNITY AND MULTIPLE USER ACK PROCEDURES IN WLAN SYSTEMS 审中-公开
标题翻译： WLAN系统中的触发传输机会和多个用户ACK程序
公开(公告)号：WO2016176595A1
公开(公告)日：2016-11-03
申请号：PCT/US2016/030164
申请日：2016-04-29
申请人： INTERDIGITAL PATENT HOLDINGS, INC.
发明人： WANG, Xiaofei , XI, Fengjun , LOU, Hanqing , OLESEN, Robert L. , LA SITA, Frank , ZHANG, Guodong
IPC分类号： H04L1/16 , H04L1/18
CPC分类号： H04L1/1887 , H04L1/1614 , H04L1/1864 , H04L1/1896 , H04L5/0007
摘要： Methods and systems for negotiating an ACK policy between a STA and an AP operating in a LAN are provided. Transmission of a modified ULR frame from a STA to an AP is provided. The ULR frame may include information related to a traffic stream for which the STA is requesting one or more transmission opportunities. The related information may include a determined priority associated with the traffic stream and a requested ACK type. The transmission opportunity may be one or more of a single user transmission opportunity, part of a multi-user transmission opportunity, or a peer-to-peer transmission opportunity.
摘要翻译：提供了在STA和在LAN中操作的AP之间协商ACK策略的方法和系统。提供了从STA到AP的修改的ULR帧的传输。 ULR帧可以包括与STA正在请求一个或多个传输机会的业务流相关的信息。相关信息可以包括与业务流相关联的确定的优先级和所请求的ACK类型。传输机会可以是单个用户传输机会，多用户传输机会的一部分或对等传输机会中的一个或多个。

7. 发明申请

WO2016144887A1 SHORT PACKET OPTIMIZATION IN WLAN SYSTEMS 审中-公开
标题翻译： WLAN系统中的短路包优化
公开(公告)号：WO2016144887A1
公开(公告)日：2016-09-15
申请号：PCT/US2016/021216
申请日：2016-03-07
申请人： INTERDIGITAL PATENT HOLDINGS, INC.
发明人： XI, Fengjun , LOU, Hanqing , OTERI, Oghenekome , SHAH, Nirav B. , OLESEN, Robert L. , JIN, Yuan Sheng , XIA, Pengfei , LA SITA, Frank , ZHANG, Guodong
IPC分类号： H04L1/16 , H04L1/18 , H04L1/00
CPC分类号： H04W28/06 , H04B7/0452 , H04L1/1614 , H04L1/1621 , H04L1/1861 , H04L5/0007 , H04L5/0055 , H04L2001/0093 , H04W28/04 , H04W72/121 , H04W84/12
摘要： Mechanisms may be used for aggregating acknowledgement (ACK), block ACK (BA) and/or short packets transmissions for multi-user (MU) wireless communication systems. Aggregation mechanisms may be used for uplink (UL) and/or downlink (DL) orthogonal frequency division multiple access (OFDMA), and/or UL/DL multiple-user multiple input multiple output (MU-MIMO) transmissions, for example. Multi-user short packets may be aggregated and/or simultaneously transmitted for DL, UL, or peer-to-peer (P2P) transmissions.
摘要翻译：机制可用于聚合多用户（MU）无线通信系统的确认（ACK），块ACK（BA）和/或短分组传输。聚合机制可以用于例如上行链路（UL）和/或下行链路（DL）正交频分多址（OFDMA）和/或UL / DL多用户多输入多输出（MU-MIMO）传输。可以针对DL，UL或对等（P2P）传输聚合和/或同时发送多用户短分组。

8. 发明申请

WO2014052879A1 METHOD FOR WIFI BEAMFORMING, FEEDBACK, AND SOUNDING (WIBEAM) 审中-公开
标题翻译：无线射频，反馈和声音（WIBEAM）的方法
公开(公告)号：WO2014052879A1
公开(公告)日：2014-04-03
申请号：PCT/US2013/062382
申请日：2013-09-27
申请人： INTERDIGITAL PATENT HOLDINGS, INC.
发明人： XIA, Pengfei , GHOSH, Monisha , LOU, Hanqing , OLESEN, Robert L. , OTERI, Oghenekome
IPC分类号： H04B7/04 , H04B7/06 , H04L1/00
CPC分类号： H04B7/0421 , H04B7/0617 , H04B7/0628 , H04B7/0634 , H04B7/0639 , H04B7/0641 , H04B7/066 , H04L1/007 , H04L1/0073
摘要： Methods for WiFi beamforming, feedback, and sounding (WiBEAM) are described. Codebook based beamforming feedback signaling and sounding mechanisms for use in wireless communications are disclosed. The methods described herein improve the feedback efficiency by using Givens rotation based decompositions and quantizing the resulting angles of the Givens rotation based decompositions using a range from a subset of [0, 2π]. Feedback may also be divided into multiple components to improve feedback efficiency/accuracy. Time domain beamforming reports for taking advantage of channel reciprocity while still taking into account practical radio frequency (RF) channel impairments are also described. Beamforming feedback that prioritizes the feedback bits in accordance with the significance of the bits is also disclosed. A preamble structure to enable the use of smoothing methods for improved channel estimation, codebook designs that may be used for codebook based beamforming feedback, and multi-resolution explicit feedback are disclosed as well.
摘要翻译：描述了用于WiFi波束成形，反馈和探测（WiBEAM）的方法。公开了用于无线通信的基于码本的波束成形反馈信令和探测机制。本文描述的方法通过使用基于Givens旋转分解并使用来自[0,2＆pgr]的子集的范围来量化基于Givens旋转的分解的所得角度来提高反馈效率。反馈也可以分为多个组件，以提高反馈效率/精度。还描述了利用信道互惠的同时考虑到实际射频（RF）信道损伤的时域波束成形报告。还公开了根据比特的重要性对反馈比特进行优先级的波束成形反馈。还公开了能够使用用于改进的信道估计的平滑方法，可用于基于码本的波束成形反馈的码本设计以及多分辨率显式反馈的前导码结构。

9. 发明申请

WO2015138750A1 WIFI EFFICIENT NETWORK TRANSITION 审中-公开
标题翻译：无线网络高效转网
公开(公告)号：WO2015138750A1
公开(公告)日：2015-09-17
申请号：PCT/US2015/020220
申请日：2015-03-12
申请人： INTERDIGITAL PATENT HOLDINGS, INC.
发明人： WANG, Xiaofei , ZHANG, Guodong , OLESEN, Robert L.
IPC分类号： H04W48/14 , H04W4/02 , H04W28/02 , H04W84/12
CPC分类号： H04W52/34 , H04W48/08 , H04W48/12 , H04W48/14 , H04W52/241 , H04W84/12
摘要： 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.
摘要翻译：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。

10. 发明申请

WO2015050995A2 ENHANCEMENTS FOR COORDINATED ORTHOGONAL BLOCK-BASED RESOURCE ALLOCATION (COBRA) IN WLAN SYSTEMS 审中-公开
标题翻译： WLAN系统中协调的基于正交块的资源分配（COBRA）的增强
公开(公告)号：WO2015050995A2
公开(公告)日：2015-04-09
申请号：PCT/US2014/058633
申请日：2014-10-01
申请人： INTERDIGITAL PATENT HOLDINGS, INC.
发明人： LOU, Hanqing , ZHANG, Guodong , WANG, Xiaofei , FANG, Juan , OTERI, Oghenekome , XIA, Pengfei , GHOSH, Monisha , OLESEN, Robert L.
IPC分类号： H04L1/16
CPC分类号： H04W74/0816 , H04L1/0003 , H04L1/0026 , H04L1/16 , H04L1/1664 , H04L1/1671 , H04L1/1685 , H04L1/1887 , H04L5/0055 , H04W72/0453 , H04W84/12
摘要： A method for use in an IEEE 802.11 station (STA) for receiving data from an IEEE 802.11 access point (AP) via a coordinated orthogonal block resource allocation (COBRA) is described. The STA may receive a COBRA schedule from the AP at transmit an acknowledgement (ACK) to the AP in the COBRA TXOP. The STA may receive a first data packet in the COBRA TxOP based on the COBRA schedule. The STA may determine whether the first data packet is received successfully and on a condition that the first data packet is not received successfully, the STA may transmit a negative acknowledgement (NACK) to the AP in the COBRA TxOP.
摘要翻译：描述了用于经由协调正交块资源分配（COBRA）从IEEE 802.11接入点（AP）接收数据的IEEE 802.11站（STA）中的方法。在COBRA TXOP中向AP发送确认（ACK）时，STA可以从AP接收COBRA调度。 STA可以基于COBRA调度在COBRA TxOP中接收第一数据分组。 STA可以确定第一数据分组是否被成功接收，并且在第一数据分组未成功接收的条件下，STA可以在COBRA TxOP中向AP发送否定确认（NACK）。

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