公开(公告)号：EP4432575A2

公开(公告)日：2024-09-18

申请号：EP24168816.7

申请日：2015-10-22

申请人： InterDigital Patent Holdings, Inc.

发明人： JIN, Yuan, Sheng ,  XI, Fengjun ,  XIA, Pengfei ,  SHAH, Nirav, B. ,  LOU, Hanqing ,  OLESEN, Robert, L. ,  OTERI, Oghenekome

IPC分类号： H04B7/06

CPC分类号： H04B7/0619 ,  H04L25/03343 ,  H04L27/2607 ,  H04L27/2613 ,  H04L27/2646 ,  H04B7/0617

摘要： W-LAN evolutions to support outdoor scenarios are proposed. In such outdoor scenarios, the usual cyclic prefix length of 800 nano-seconds is not long enough to capture all multipath components. The present application proposes to use longer CP than the normal IEEE 802.11 CP and a negotiation protocol for selecting the CP length. A so-called cyclic prefix discovery frame is sent from the Access Point (AP) to the stations (STA) requesting measurement (ie of the time domain channel estimation) and feedback of the desired Guard Period length (1.6 up to 6.4 micro-seconds are also available). A special Non Data Packet Long Delay Spread (NDP-L) frame is sent from the AP to the STAs to help measuring the delay spread. Further ideas comprise channel shortening using beamforming (after of before the IFFT) to reduce the delay spread of outdoor W-LAN signals.

公开(公告)号：EP4376496A2

公开(公告)日：2024-05-29

申请号：EP24155528.3

申请日：2014-09-12

申请人： InterDigital Patent Holdings, Inc.

发明人： OTERI, Oghenekome ,  XIA, Pengfei ,  WANG, Xiaofei ,  LOU, Hanqing ,  GHOSH, Monisha ,  OLESEN, Robert L. ,  SHAH, Nirav B. ,  LA SITA, Frank

IPC分类号： H04W52/00

CPC分类号： H04W74/0808 ,  H04W52/12

摘要： Methods and apparatuses are described herein for adapting clear channel assessment (CCA) thresholds with or without Transmit Power Control (TPC) are disclosed. An IEEE 802.11 station (STA) may dynamically calculate a STA specific transmit power control (TPC) value and a STA specific clear channel assessment (CCA) value based on a target TPC parameter and a target CCA parameter. The target TPC parameter and the target CCA parameter may be received from an IEEE 802.11 cluster head configured to control TPC and CCA for a plurality of STAs associated with the BSS. The target TPC parameter and the target CCA parameter also may be related. The STA may then determine whether a carrier sense multiple access (CSMA) wireless medium of a wireless local area network (WLAN) basic service set (BSS) is occupied or idle based on the STA specific CCA value.

公开(公告)号：EP4236144A3

公开(公告)日：2023-10-25

申请号：EP23178748.2

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

IPC分类号： H04L1/16 ,  H04L1/18

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.

公开(公告)号：EP3975650A1

公开(公告)日：2022-03-30

申请号：EP21209005.4

申请日：2013-11-08

申请人： Interdigital Patent Holdings, Inc.

发明人： WANG, Xiaofei ,  ZHANG, Guodong ,  OTERI, Oghenekome ,  XIA, Pengfei

IPC分类号： H04W72/12 ,  H04B7/0491

摘要： A method and apparatus may be used in multi-AP and multi-wireless transmit/receive unit joint transmissions. The apparatus may be configured to transmit a joint transmission request on a first medium, and receive a joint transmission response on the first medium. In response, the apparatus my perform a joint transmission negotiation on a second medium and transmit data on the second medium based on the joint transmission negotiation. The apparatus may be configured to perform coordinated sectorized or beamformed transmissions through access point (AP)/PCP negotiations. The apparatus may provide an indication of support for joint transmission and coordinated sectorized or beamformed transmissions. The method and apparatus may also implement multi-AP/WTRU request-to-send (RTS)/clear-to-send (CTS) procedures. The apparatus may be configured to perform coordinated sectorized or beamforming grouping.

公开(公告)号：EP2992724B1

公开(公告)日：2020-04-08

申请号：EP14728045.7

申请日：2014-05-02

申请人： Interdigital Patent Holdings, Inc.

发明人： OTERI, Oghenekome ,  LOU, Hanqing ,  GHOSH, Monisha ,  OLESEN, Robert, L. ,  LA SITA, Frank ,  WANG, Xiaofei ,  XIA, Pengfei ,  SHAH, Nirav, B.

IPC分类号： H04W74/08 ,  H04W84/12 ,  H04W64/00 ,  H04W4/08

公开(公告)号：EP2915382B1

公开(公告)日：2017-05-31

申请号：EP13795347.7

申请日：2013-11-04

申请人： Interdigital Patent Holdings, Inc.

发明人： OTERI, Oghenekome ,  XIA, Pengfei ,  LOU, Hanqing ,  GHOSH, Monisha ,  OLESEN, Robert L. ,  SHAH, Nirav B. ,  LA SITA, Frank

IPC分类号： H04W52/28

CPC分类号： H04W52/10 ,  H04W24/10 ,  H04W52/08 ,  H04W52/28 ,  H04W84/12 ,  Y02D70/00

摘要： A method and apparatus is described herein for performing loop power control and transmission power control (TPC) in a wireless network. Described herein are methods including using separate power control loops for communication with an entire wireless network and for point-to-point (P2P) transmissions and separate power control loops for omni-directional and directional beamformed transmissions. Also described herein are methods and apparatuses for requesting clear channel assessment (CCA) measurements and adjusting CCA thresholds and transmission power based on the reported measurements. Methods and apparatuses are also described wherein access points (APs) coordinate transmission power to reduce interference with each other and to determine optimal transmission power to each mobile station (STA).

摘要翻译： 本文描述了用于在无线网络中执行环路功率控制和传输功率控制（TPC）的方法和设备。 这里描述的方法包括使用单独的功率控制环路来与整个无线网络进行通信并且用于点对点（P2P）传输以及用于全向和定向波束成形传输的单独的功率控制环路。 本文还描述了用于基于所报告的测量来请求空闲信道评估（CCA）测量和调整CCA阈值和发射功率的方法和设备。 还描述了接入点（AP）协调传输功率以减少彼此干扰并确定到每个移动台（STA）的最佳传输功率的方法和装置。

公开(公告)号：EP3020146A2

公开(公告)日：2016-05-18

申请号：EP14750039.1

申请日：2014-07-10

申请人： Interdigital Patent Holdings, Inc.

发明人： XIA, Pengfei ,  OTERI, Oghenekome ,  LOU, Hanqing ,  SHAH, Nirav B. ,  GHOSH, Monisha ,  OLESEN, Robert L.

IPC分类号： H04B7/06 ,  H04W16/28 ,  H04B7/04 ,  H04W74/08

CPC分类号： H04W72/046 ,  H04B7/0417 ,  H04B7/0491 ,  H04B7/0617 ,  H04B7/063 ,  H04L1/00 ,  H04W16/28

摘要： A method and apparatus may be used to support coordinated and cooperative sectorized transmissions. Power control and clear channel assessment for sectorized transmissions may be used, along with sectorized beacon and associated procedures. Transmissions in a network may be protected by a first access point (AP) sending an omni-directional transmission and a beamformed or sectorized transmission to a station (STA), an overlapping basic service set (OBSS) confirming a spatially orthogonal (SO) condition based on the omni-directional transmission, and a second AP monitoring the omni-directional transmission and confirming the SO condition. The STA may be configured to receive a request-to-send (RTS) frame indicating data is available for transmission, and transmit a cooperative sectorized (CS) clear-to-send (CTS) frame indicating an ability for multiple AP reception.

公开(公告)号：EP2992724A1

公开(公告)日：2016-03-09

申请号：EP14728045.7

申请日：2014-05-02

申请人： Interdigital Patent Holdings, Inc.

发明人： OTERI, Oghenekome ,  LOU, Hanqing ,  GHOSH, Monisha ,  OLESEN, Robert, L. ,  LA SITA, Frank ,  WANG, Xiaofei ,  XIA, Pengfei ,  SHAH, Nirav, B.

IPC分类号： H04W74/08

摘要： Systems, methods, and instrumentalities are described to implement an interference management method in a WLAN. An access point (AP) or an inter-BSS coordinator (IBC) may identify a station (STA) associated with a first basic service set (BSS) as an edge STA or a non-edge STA. The AP or the IBC may group the edge STA into an edge group and a non-edge STA into a non-edge group. The AP or the IBC may receive information associated with a second BSS. The AP or the IBC may coordinate access of the edge group and/or the non-edge group. The access may be coordinated to minimize interference of the edge STA. The access may be based at least on the received information associated with the second BSS. The AP or the IBC may adjust transmit power of a plurality of STAs identified as edge group STAs and non-edge group STAs.

公开(公告)号：EP4236144A2

公开(公告)日：2023-08-30

申请号：EP23178748.2

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

IPC分类号： H04L1/18

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.

公开(公告)号：EP3761518A1

公开(公告)日：2021-01-06

申请号：EP20192394.3

申请日：2014-07-10

申请人： Interdigital Patent Holdings, Inc.

发明人： XIA, Pengfei ,  OTERI, Oghenekome ,  LOU, Hanqing ,  SHAH, Nirav B. ,  GHOSH, Monisha ,  OLESEN, Robert L.

IPC分类号： H04B7/0417 ,  H04B7/0491 ,  H04B7/06 ,  H04W74/08 ,  H04W16/28

摘要： A method and apparatus may be used to support coordinated and cooperative sectorized transmissions. Power control and clear channel assessment for sectorized transmissions may be used, along with sectorized beacon and associated procedures. Transmissions in a network may be protected by a first access point (AP) sending an omni-directional transmission and a beamformed or sectorized transmission to a station (STA), an overlapping basic service set (OBSS) confirming a spatially orthogonal (SO) condition based on the omni-directional transmission, and a second AP monitoring the omni-directional transmission and confirming the SO condition. The STA may be configured to receive a request-to-send (RTS) frame indicating data is available for transmission, and transmit a cooperative sectorized (CS) clear-to-send (CTS) frame indicating an ability for multiple AP reception.