公开(公告)号：US20150098392A1

公开(公告)日：2015-04-09

申请号：US14048464

申请日：2013-10-08

Applicant: QUALCOMM Incorporated

Inventor： Sandip Homchaudhuri ,  Shu Du ,  Sumeet Kumar ,  Sohani Ganesh Rao ,  Paul Husted

IPC: H04W48/20

CPC classification number: H04W48/20 ,  H04L5/0055 ,  H04W36/14 ,  H04W40/244 ,  H04W84/12 ,  H04W88/08

Abstract: Methods, devices, and apparatuses are described for wireless communications using a multidimensional algorithm for roaming. In one aspect, an initial set of candidate access points (APs) is produced by a station using a roaming scan. The initial set may be identified based at least in part on an initial metric (e.g., beacon signal strength). A probe signal may be transmitted by the station to at least one of the candidate APs in the initial set and information may be received in response to the probe signals. The station may then identify a reduced set from the initial set based at least in part on the received information, where the reduced set is used to select a target AP. At least one additional metric may be identified and the probe signal may be configured to obtain information corresponding to the additional metrics. This information may be used by the station to select the candidate APs in the reduced set.

Abstract translation: 描述了使用用于漫游的多维算法的无线通信的方法，设备和装置。 在一个方面，候选接入点（AP）的初始集合由使用漫游扫描的站产生。 可以至少部分地基于初始度量（例如，信标信号强度）来识别初始设置。 探测信号可以由站发送到初始设置中的候选AP中的至少一个，并且响应于探测信号可以接收信息。 然后，站可以至少部分地基于接收到的信息来识别来自初始集合的缩减集合，其中使用缩减集合来选择目标AP。 可以识别至少一个附加度量，并且可以将探测信号配置为获得对应于附加度量的信息。 该信息可以由站使用以选择缩减集中的候选AP。

公开(公告)号：US10231179B2

公开(公告)日：2019-03-12

申请号：US15051403

申请日：2016-02-23

Applicant: QUALCOMM Incorporated

Inventor： Sandip Homchaudhuri ,  Youhan Kim ,  Srinivas Jasti ,  Sunghun Choi ,  Vikram Phogat ,  Ye Yuan ,  Umang Sureshbhai Patel ,  Lian Chen ,  Sumeet Kumar ,  James Simon Cho ,  Sreepathy Aida ,  Zhanfeng Jia ,  Pradeep Kumar Yenganti

IPC: H04W52/02 ,  H04B7/06 ,  H04B7/08 ,  H04B7/00

Abstract: Systems and methods for wireless communications are disclosed. More particularly, aspects generally relate to an apparatus for wireless communications. The apparatus generally includes an interface for communicating with a plurality of wireless nodes via a plurality of antennas, and a processing system configured to determine a power state of each of the plurality of wireless nodes, and change from a first antenna mode used for communicating with the wireless nodes using a first number of spatial streams to a second antenna mode used for communicating with the wireless nodes using a second number of spatial streams, based on the determined power states of the wireless nodes.

公开(公告)号：US10159047B2

公开(公告)日：2018-12-18

申请号：US14715230

申请日：2015-05-18

Applicant: QUALCOMM Incorporated

Inventor： Sandip HomChaudhuri ,  Sumeet Kumar ,  James Simon Cho

IPC: H04W4/00 ,  H04W52/08 ,  H04W52/54 ,  H04L5/00 ,  H04L29/06 ,  H04L1/00 ,  H04L1/16 ,  H04W52/36

Abstract: Methods and apparatuses for providing closed-loop power control during a short inter-frame space (SIFS) burst are described herein. A method includes receiving feedback associated with transmit power used to transmit a first data packet in a SIFS burst. The method also includes adjusting at least the transmit power, or a modulation and coding scheme (MCS), or a combination thereof, used to transmit a second data packet of the SIFS burst based at least in part on the received feedback.

公开(公告)号：US09655054B2

公开(公告)日：2017-05-16

申请号：US14491936

申请日：2014-09-19

Applicant: QUALCOMM Incorporated

Inventor： Sandip HomChaudhuri ,  Fnu Rajkumar Samuel ,  Nitin Ashok Changlani ,  Arunkumar Jayaraman ,  Pradeep Baliganapalli Nagaraju ,  Sumeet Kumar ,  Lian Chen ,  James Simon Cho

IPC: H04W4/00 ,  H04W52/02 ,  H04B17/30 ,  H04L12/807 ,  H04W72/12 ,  H04W28/02

CPC classification number: H04W52/0274 ,  H04B17/30 ,  H04L47/27 ,  H04W28/02 ,  H04W52/0216 ,  H04W52/0238 ,  H04W52/0241 ,  H04W52/0245 ,  H04W72/12 ,  Y02D70/142 ,  Y02D70/22

Abstract: Methods, systems, and devices are described for adapting blind reception duration for range and congestion. A wireless station may measure channel conditions (e.g., range to an access point (AP) and channel congestion), and adjust one or more sleep timers based on the conditions. The sleep timers may each be associated with a window for reception of an expected transmission. If the transmission is not received in the window, the station may enter a sleep state to conserve power. In one example, a beacon miss timer is adjusted, and the expected wireless transmission is a delivery traffic indication message (DTIM). In another example, a content after beacon (CAB) timer is adjusted and the expected wireless transmission is the CAB. In some cases, the station may measure a delay for a number of beacons and determine the adjustment based on the delays.

公开(公告)号：US20160337899A1

公开(公告)日：2016-11-17

申请号：US15151411

申请日：2016-05-10

Applicant: QUALCOMM Incorporated

Inventor： Zhanfeng Jia ,  James Cho ,  Sumeet Kumar ,  Sandip HomChaudhuri ,  Ian O'Donnell ,  Ning Zhang ,  Alireza Raissinia

IPC: H04W28/02 ,  H04B7/04 ,  H04L5/00 ,  H04W52/02

CPC classification number: H04W28/0289 ,  H04L5/0023 ,  H04L5/0028 ,  H04L5/0048 ,  H04L27/2601 ,  H04W52/0219 ,  H04W52/0235 ,  H04W72/1263 ,  H04W84/12 ,  Y02D70/00 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/162 ,  Y02D70/22

Abstract: Apparatuses and methods are disclosed for delivering queued downlink (DL) data from a second wireless device to a plurality of first wireless devices. In accordance with example embodiments, the second wireless device may determine, for each of the plurality of first wireless devices, a presence of a corresponding set of queued DL data, may transmit a beacon frame identifying which of the plurality of first wireless devices has queued DL data, and may transmit, to each of the identified first wireless devices, permission to request delivery of queued DL data. Next, the second wireless device may receive, from each of the identified first wireless devices, a request for delivery of the queued DL data. Then, the second wireless device may concurrently transmit, to each of the identified first wireless devices, the corresponding set of queued DL data.

Abstract translation: 公开了用于将排队的下行链路（DL）数据从第二无线设备传送到多个第一无线设备的装置和方法。 根据示例性实施例，第二无线设备可以针对多个第一无线设备中的每一个来确定对应的一组排队的DL数据的存在，可以发送标识多个第一无线设备中哪一个已排队的信标帧 DL数据，并且可以向每个所识别的第一无线设备发送请求传送排队的DL数据的许可。 接下来，第二无线设备可以从每个识别的第一无线设备接收对排队的DL数据的传送请求。 然后，第二无线设备可以向所标识的每个第一无线设备同时发送对应的排队DL数据集。