公开(公告)号：WO2023091857A1

公开(公告)日：2023-05-25

申请号：PCT/US2022/079162

申请日：2022-11-02

Applicant: QUALCOMM INCORPORATED

Inventor： SUN, Yanjun ,  ASTERJADHI, Alfred ,  PATIL, Abhishek Pramod ,  CHERIAN, George ,  HO, Sai Yiu Duncan ,  NAIK, Gaurang ,  AJAMI, Abdel Karim ,  HOMCHAUDHURI, Sandip

IPC: H04L1/00 ,  H04L5/00

Abstract: This disclosure provides methods, devices and systems for transmitting and receiving, between an access point (AP) and one or more stations (STAs) in a basic service set (BSS), an indication of a puncturing event. In some examples, the transmitting and receiving may use non-legacy elements configured to provide information about the puncturing event. In certain aspects, the disclosure provides methods for transmitting and receiving, between the AP and one or more STAs, an indication of an operating band switch. In some examples, the transmitting and receiving may use non-legacy elements configured to provide information about the operating band switch.

公开(公告)号：WO2022188137A1

公开(公告)日：2022-09-15

申请号：PCT/CN2021/080417

申请日：2021-03-12

Applicant: QUALCOMM INCORPORATED ,  ZHANG, Yangjun ,  YANG, Lin ,  YANG, Yusheng ,  HOMCHAUDHURI, Sandip ,  CHO, James Simon ,  RAISSINIA, Alireza

Inventor： ZHANG, Yangjun ,  YANG, Lin ,  YANG, Yusheng ,  HOMCHAUDHURI, Sandip ,  CHO, James Simon ,  RAISSINIA, Alireza

IPC: H04L5/00 ,  H04W72/04 ,  H04W4/40 ,  H04W8/00

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a transmitter may detect at least one distance between the transmitter and a receiver. The transmitter may transmit, to the receiver, information using a selected band of a wide band or a narrow band, where the selected band is based at least in part on the at least one distance. Similarly, in some aspects, a receiver may detect at least one distance between the receiver and a transmitter. The receiver may receive, from the transmitter, information using a selected band of a wide band or a narrow band, where the selected band is based at least in part on the at least one distance. Numerous other aspects are described.

公开(公告)号：WO2022139978A1

公开(公告)日：2022-06-30

申请号：PCT/US2021/059344

申请日：2021-11-15

Applicant: QUALCOMM INCORPORATED

Inventor： HOMCHAUDHURI, Sandip ,  SAED, Steve ,  KUPPA, Srikant ,  FREDERIKS, Guido Robert ,  CHEN, Lian ,  NAGAWADE, Deepak Shahaji ,  TANTRY, Vishwanath

IPC: H04W52/02

Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for adjusting a time period to delay entering a power save mode (leak guard) for wireless communications. In one aspect, a wireless communication device may adjust a time period to delay entering a power save mode. The time period is associated with the wireless communication device remaining awake to prevent an access point from transmitting to the wireless communication device while the wireless communication device is in the power save mode. The wireless communication device also may provide, to the AP, an indication that the wireless communication device is entering a power save mode, and the wireless communication device may enter the power save mode. Entering the power save mode is at least the adjusted time period after providing the indication to the AP.

公开(公告)号：WO2021207474A1

公开(公告)日：2021-10-14

申请号：PCT/US2021/026353

申请日：2021-04-08

Applicant: QUALCOMM INCORPORATED

Inventor： PATIL, Abhishek Pramod ,  CHERIAN, George ,  ASTERJADHI, Alfred ,  HO, Sai Yiu Duncan ,  SUN, Yanjun ,  HOMCHAUDHURI, Sandip ,  XIAO, Yongchun

IPC: H04W74/00 ,  H04W76/15 ,  H04B7/0413 ,  H04W84/12

Abstract: An access point (AP) of an AP multi-link device (MLD) is associated with a first communication link, and one or more secondary APs of the AP MLD are associated with one or more respective secondary communication links of the AP MLD. The first AP of the AP MLD generates a frame including a first change sequence field, one or more secondary change sequence fields, and a critical update flag subfield. The first change sequence field carries a value of the most-recent critical update for the first AP. The one or more secondary change sequence fields carry values of the most-recent critical updates for the one or more respective secondary APs. The critical update flag subfield carries an indication of a change in value of at least one of the secondary change sequence fields. The first AP transmits the frame over the first communication link of the AP MLD.

公开(公告)号：WO2016043891A1

公开(公告)日：2016-03-24

申请号：PCT/US2015/045472

申请日：2015-08-17

Applicant: QUALCOMM INCORPORATED

Inventor： HOMCHAUDHURI, Sandip ,  RAJKUMAR SAMUEL, Fnu ,  CHANGLANI, Nitin, Ashok ,  JAYARAMAN, Arunkumar ,  BALIGANAPALLI NAGARAJU, Pradeep ,  KUMAR, Sumeet ,  CHEN, Lian ,  CHO, James, Simon

IPC: H04W52/02

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.

Abstract translation: 描述了用于适应范围和拥塞的盲接收持续时间的方法，系统和设备。 无线站可以测量信道条件（例如，到接入点（AP）的范围和信道拥塞），并且基于条件来调整一个或多个睡眠定时器。 睡眠定时器可以各自与用于接收预期传输的窗口相关联。 如果窗口中没有接收到传输，则站可能进入睡眠状态以节省电力。 在一个示例中，调整信标缺失定时器，并且期望的无线传输是传送业务指示消息（DTIM）。 在另一示例中，调整了信标（CAB）定时器之后的内容，并且预期的无线传输是CAB。 在某些情况下，车站可以测量多个信标的延迟，并根据延迟确定调整。

公开(公告)号：WO2015053972A1

公开(公告)日：2015-04-16

申请号：PCT/US2014/058003

申请日：2014-09-29

Applicant: QUALCOMM INCORPORATED

Inventor： HOMCHAUDHURI, Sandip ,  DU, Shu ,  KUMAR, Sumeet ,  RAO, Sohani, Ganesh ,  HUSTED, Paul

IPC: H04W48/20 ,  H04W84/12

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：WO2014186522A1

公开(公告)日：2014-11-20

申请号：PCT/US2014/038097

申请日：2014-05-15

Applicant: QUALCOMM INCORPORATED

Inventor： CHO, James, Simon ,  JAYARAMAN, Arunkumar ,  FREDERIKS, Guido, Robert ,  JIA, Zhanfeng ,  DU, Shu ,  RAISSINIA, Alireza ,  WANG, Jibing ,  HOMCHAUDHURI, Sandip

IPC: H04W52/02

CPC classification number: H04W52/0238 ,  H04L1/08 ,  H04W52/0206 ,  H04W52/0216 ,  H04W52/0235 ,  H04W72/02 ,  H04W84/12 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/22

Abstract: Methods, systems, and devices are described for power conservation in a wireless communications system through efficient transmissions and acknowledgements of information between an AP and a station. The time between a determination by a station to enter a power saving mode and entering network sleep mode by the station may be reduced through a transmission, by an AP, of an MPDU to the station successive to an SIFS after transmission of an acknowledgement to the station of a PS-Poll frame from the station. The time to enter a power saving mode by a station may also be reduced through transmission of A-MPDUs in which a last MPDU of the A-MPDU has an indicator bit cleared to indicate no additional data is to be transmitted. An AP may prevent a retransmission of an MPDU to the station in the absence of an acknowledgement from the station, to further enhance efficiency.

Abstract translation: 通过在AP和站之间的有效传输和确认信息来描述无线通信系统中的功率节省的方法，系统和设备。 由站点确定进入省电模式和进入网络休眠模式之间的时间可以通过由AP发送到SIFS之后的站点的MPDU在发送确认到 来自电台的PS-Poll帧的电台。 站点进入省电模式的时间也可以通过发送A-MPDU来减少，其中A-MPDU的最后MPDU具有清除的指示符比特以指示不需要发送附加数据。 在没有来自台站的确认的情况下，AP可以防止向台站重传MPDU，以进一步提高效率。

公开(公告)号：WO2014160313A2

公开(公告)日：2014-10-02

申请号：PCT/US2014/026295

申请日：2014-03-13

Applicant: QUALCOMM INCORPORATED

Inventor： ALDANA, Carlos Horacio ,  SRIDHARA, Vinay ,  FISCHER, Sven ,  CHAO, Hui ,  HOMCHAUDHURI, Sandip ,  CHO, James Simon ,  ZHANG, Xiaoxin

CPC classification number: H04W64/00 ,  G01S5/0081 ,  G01S5/0236 ,  G01S5/0242 ,  H04W48/12

Abstract: A method and apparatus for broadcasting short interframe space information to aid in determining a round trip time are provided. The round trip time is used as an aid in locating nodes within a WiFi or WLAN network. The method begins with capturing a time of transmission of a frame by a transmitting station. The receiving station then captures the time of arrival of the frame just sent by the transmitting station. The receiving station replies with a received frame message and the time of departure is captured. The transmitting station then captures the time of arrival of the received frame message. The captured arrival and departure times of the frame and the received frame message allow the round trip time to be computed. The RTT may then be included as part of a network message.

Abstract translation: 提供了一种用于广播短帧间空间信息以帮助确定往返时间的方法和装置。 往返时间用于帮助定位WiFi或WLAN网络中的节点。 该方法开始于通过发送站捕获帧的传输时间。 接收站然后捕获发送站刚刚发送的帧的到达时间。 接收站用接收到的帧消息进行回复，并且捕获出发的时间。 然后，发送站捕获所接收的帧消息的到达时间。 所捕获的到达和离开时间帧和接收到的帧消息允许计算往返时间。 然后可以将RTT包括为网络消息的一部分。

公开(公告)号：WO2014153003A1

公开(公告)日：2014-09-25

申请号：PCT/US2014/028617

申请日：2014-03-14

Applicant: QUALCOMM INCORPORATED

Inventor： JIA, Zhangfeng ,  HOMCHAUDHURI, Sandip ,  DU, Shu

IPC: H04W72/12

CPC classification number: H04W24/02 ,  H04W28/18 ,  H04W36/06 ,  H04W52/0209 ,  H04W72/0453 ,  H04W76/15 ,  H04W88/06 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/22

Abstract: Systems and methods are disclosed for coordinating operation on multiple frequency bands between two or more multiple concurrent band (MCB) devices. The band switch protocols may include sending information on a second band after a communications link has been established on a first band. The receiving device may treat the transmission of the frame on the new band as a message to switch bands, such that the transmitting and receiving devices may conduct subsequent communications on the new band. Further, the band switch protocols allow for seamless operation over the band switch event. As a result, a frequency band having desired performance characteristics may be selected dynamically.

Abstract translation: 公开了用于在两个或更多个并发频带（MCB）设备之间的多个频带上的协调操作的系统和方法。 频带交换协议可以包括在第一频带上建立通信链路之后在第二频带上发送信息。 接收设备可以将新频带上的帧的传输视为切换频带的消息，使得发射和接收设备可以在新频带上进行后续通信。 此外，频带切换协议允许通过频带切换事件的无缝操作。 结果，可以动态地选择具有期望的性能特征的频带。

公开(公告)号：WO2014133715A1

公开(公告)日：2014-09-04

申请号：PCT/US2014/014288

申请日：2014-01-31

Applicant: QUALCOMM INCORPORATED

Inventor： JIA, Zhanfeng ,  HOMCHAUDHURI, Sandip ,  RAISSINIA, Alireza

IPC: H04W48/14 ,  H04W52/02

CPC classification number: H04W52/0229 ,  H04W48/12 ,  H04W48/14 ,  H04W52/0216 ,  Y02D70/142

Abstract: Beacon-poll frames are transmitted from a station (STA) to a wireless AP in an opportunistic manner. In response to receiving a beacon-poll frame, the wireless AP transmits a unicast beacon frame to the STA, thereby eliminating the need for the STA to periodically wake up to receive broadcast beacon frames from the AP. The wireless AP may transmit the unicast beacon frame at a higher speed than a conventional broadcast beacon frame. As a result, the time that the STA must be awake to receive the unicast beacon frame is significantly less than the time that the STA must be awake to receive a conventional broadcast beacon frame, thereby resulting in significant power savings within the STA. The wireless AP may aggregate downlink (DL) data packets to be transmitted to the STA with the unicast beacon frame, resulting in further power savings within the STA.

Abstract translation: 信标轮询帧以机会性的方式从站（STA）发送到无线AP。 响应于接收到信标轮询帧，无线AP向STA发送单播信标帧，从而不需要STA周期性地从AP接收广播信标帧。 无线AP可以以比常规广播信标帧更高的速度发送单播信标帧。 结果，STA必须唤醒接收单播信标帧的时间明显小于STA必须唤醒以接收常规广播信标帧的时间，从而导致STA内的显着功率节省。 无线AP可以将要发送到STA的下行链路（DL）数据分组聚合到单播信标帧，导致STA内进一步的功率节省。