公开(公告)号：US20170339680A1

公开(公告)日：2017-11-23

申请号：US15595161

申请日：2017-05-15

Applicant: QUALCOMM Incorporated

Inventor： Zhanfeng Jia ,  Alireza Raissinia ,  James Cho ,  Sandip Homchaudhuri ,  Senthil Subramanian ,  Alfred Asterjadhi ,  Naveen Kumar Kakani

IPC: H04W72/04 ,  H04W28/02 ,  H04W28/16 ,  H04W28/18

CPC classification number: H04W72/042 ,  H04W28/02 ,  H04W28/16 ,  H04W28/18 ,  H04W52/0216 ,  H04W52/0219 ,  H04W72/121 ,  H04W84/12 ,  Y02D70/00 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/162 ,  Y02D70/166

Abstract: A system and method for managing communications between an access point (AP) and a plurality of wireless stations (STAs) over a wireless medium. The AP schedules each of the plurality of STAs to access the wireless medium during a target wake time (TWT) service period. During a first portion of the TWT service period, the AP communicates with a first subset of the plurality of STAs using a first signaling technique. During a second portion of the TWT service period, the AP communicates with a second subset of the plurality of STAs using a second signaling technique. The second subset of the plurality of STAs does not include any STAs from the first subset.

公开(公告)号：US09152206B2

公开(公告)日：2015-10-06

申请号：US13922159

申请日：2013-06-19

Applicant: QUALCOMM Incorporated

Inventor： Sandip Homchaudhuri ,  James Simon Cho ,  Paul Husted ,  Sarvesh Shrivastava

IPC: H04M1/00 ,  G06F1/32 ,  H04W52/00

CPC classification number: G06F1/3209 ,  G06F1/3225 ,  G06F1/3278 ,  H04W52/00 ,  H04W52/0267 ,  H04W52/028 ,  H04W52/0287 ,  Y02D10/157 ,  Y02D70/142

Abstract: Systems and methods are disclosed for operating an interface of an electronic device in an active mode or a power save mode based, at least in part, on a condition of a data exchange module buffer. When buffer space is available, incoming data may be stored locally and the interface used to access remote memory storage may be in a power save mode. The interface may revert to active mode to transfer data to the remote memory, such as after a configurable reception interval. Outgoing data may also be stored in a buffer, allowing the interface to be in a power save mode with information transmitted from the buffer.

Abstract translation: 公开了用于至少部分地基于数据交换模块缓冲器的状况来操作处于活动模式或省电模式的电子设备的接口的系统和方法。 当缓冲区空间可用时，输入数据可能在本地存储，用于访问远程存储器的接口可能处于省电模式。 接口可以恢复到活动模式，以将数据传输到远程存储器，例如在可配置的接收间隔之后。 输出数据也可以存储在缓冲器中，允许接口处于具有从缓冲器发送的信息的节电模式。

公开(公告)号：US20150065157A1

公开(公告)日：2015-03-05

申请号：US14015783

申请日：2013-08-30

Applicant: QUALCOMM Incorporated

Inventor： Sandip Homchaudhuri ,  Richard G. Bahr ,  Arunkumar Jayaraman

IPC: H04W72/08

CPC classification number: H04W72/082 ,  H04W36/0016 ,  H04W36/32 ,  H04W84/005

Abstract: Methods and apparatuses are described for wireless communications coexistence. In one aspect, a first device may detect an interference produced by a second device co-located with the first device. The first device may communicate with an access point (AP) using a free or open band and the second device may communicate with a cellular network (e.g., LTE network). In response to the detected interference, a message may be transmitted to the AP from the first device with information for the AP to determine whether to switch to a different channel in the open band to communicate with the first device. The AP may receive such a message from each terminal in at least a subset of associated terminals. The AP may determine, from the messages received, to switch to the different channel in the open band and may transmit a message to the associated terminals indicating the switch.

Abstract translation: 描述了用于无线通信共存的方法和装置。 在一个方面，第一设备可以检测由与第一设备共同定位的第二设备产生的干扰。 第一设备可以使用免费或开放频带与接入点（AP）进行通信，并且第二设备可以与蜂窝网络（例如，LTE网络）进行通信。 响应于检测到的干扰，可以从具有AP的信息的第一设备向AP发送消息，以确定是否切换到开放频带中的与第一设备通信的不同信道。 AP可以在相关终端的至少一个子集中从每个终端接收这样的消息。 AP可以从接收到的消息中确定切换到开放频带中的不同信道，并且可以向指示交换机的相关终端发送消息。

公开(公告)号：US20140341099A1

公开(公告)日：2014-11-20

申请号：US14277623

申请日：2014-05-14

Applicant: QUALCOMM Incorporated

Inventor： James Simon Cho ,  Arunkumar Jayaraman ,  Guido Robert Frederiks ,  Zhanfeng Jia ,  Shu Du ,  Alireza Raissinia ,  Jibing Wang ,  Sandip Homchaudhuri

IPC: H04W52/02 ,  H04L1/08

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.

公开(公告)号：US20140335891A1

公开(公告)日：2014-11-13

申请号：US14272844

申请日：2014-05-08

Applicant: QUALCOMM INCORPORATED

Inventor： Xiaoxin Zhang ,  Carlos Horacio Aldana ,  Sandip Homchaudhuri ,  James Simon Cho

IPC: H04W64/00

CPC classification number: H04W64/003 ,  G01S5/0205 ,  H04W64/00

Abstract: This disclosure includes systems and methods for determining the location of each of a plurality of STAs of a WLAN where an AP measures the round-trip time (RTT) and the angle of arrival (AOA) to each STA from implicit packet exchange, such as data frame and ACK frame. The AP may then report the RTT and AOA measurements to each STA using a dedicated beacon information element (IE) which multicasts RTT and AOA measurements to the STAs. By employing an additional parameter, namely, angle of arrival AOA, a single AP may compute the two-dimensional location of each associated STA. Further, another beacon IE may multicast mapping of the AIDs to MAC addresses so that the associated STAs can understand such mapping for STAs in a network so that one STA may know the location of other STAs. Encryption may be employed to achieve privacy.

Abstract translation: 本公开包括用于确定WLAN的多个STA中的每一个的位置的系统和方法，其中AP从隐式分组交换测量到每个STA的往返时间（RTT）和到达角（AOA），例如 数据帧和ACK帧。 然后，AP可以使用将RTT和AOA测量多播到STA的专用信标信息元素（IE）向每个STA报告RTT和AOA测量。 通过采用附加参数，即到达角AOA，单个AP可以计算每个相关STA的二维位置。 此外，另一个信标IE可以将AID多播到MAC地址，使得相关联的STA可以理解网络中的STA的这种映射，使得一个STA可以知道其他STA的位置。 可以采用加密来实现隐私。

公开(公告)号：US20140269400A1

公开(公告)日：2014-09-18

申请号：US13826116

申请日：2013-03-14

Applicant: QUALCOMM Incorporated

Inventor： Carlos Horacio ALDANA ,  Vinay Sridhara ,  Sven Fischer ,  Hui Chao ,  Sandip Homchaudhuri ,  James Simon Cho ,  Xiaoxin Zhang

IPC: H04W24/08

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：US12279250B2

公开(公告)日：2025-04-15

申请号：US17722641

申请日：2022-04-18

Applicant: QUALCOMM Incorporated

Inventor： Nicholas Kucharewski ,  Ahmed Ragab Elsherif ,  Simon Jan Brand ,  Srinivas Katar ,  Xiaolong Huang ,  Sandip Homchaudhuri ,  Harinder Singh

IPC: H04L12/00 ,  H04B7/0452 ,  H04B7/0491 ,  H04W72/0446 ,  H04W72/1263 ,  H04W72/543

Abstract: This disclosure provides methods, devices and systems for provisioning resources for wireless communications. Some implementations more specifically relate to provisioning such resources based on a mapping of wireless communication devices to a number of time sectors that occur periodically and do not overlap other time sectors. In some aspects, each wireless stations (STAs) in a basic service set (BSS) may be mapped to a respective time sector based on attributes associated with the BSS so that communications between a STA and its associated access point (AP) can only occur within the respective time sector(s) to which the STA is mapped. In some other aspects, each AP in a multi-AP environment may be mapped to a respective time sector based on attributes associated with the multi-AP environment so that communications between an AP and its associated STAs can only occur within the respective time sector(s) to which the AP is mapped.

公开(公告)号：US12250587B2

公开(公告)日：2025-03-11

申请号：US18349808

申请日：2023-07-10

Applicant: QUALCOMM Incorporated

Inventor： Srikant Kuppa ,  Sandip Homchaudhuri ,  Yongchun Xiao ,  Hao-Jen Cheng

IPC: H04B7/26 ,  H04B1/713 ,  H04W28/02

Abstract: Methods, systems, and devices for wireless communications are described. A station (STA) may receive a first signal including an indication of a set of frequency channels for a set of target wake time (TWT) sessions that recur according to a service interval. In some examples, the first signal may indicate a respective frequency channel of the set of frequency channels for each TWT session of the set of target wake time sessions. Each TWT session of the set of TWT sessions may have an associated service period that the STA may be in an awake state. The STA may switch, for the first TWT session, from the first frequency channel to the second frequency channel. In some examples, based on the switching, the STA may communicate a signal during a service period associated with the first TWT session over the second frequency channel.

公开(公告)号：US11936473B2

公开(公告)日：2024-03-19

申请号：US17233341

申请日：2021-04-16

Applicant: QUALCOMM Incorporated

Inventor： Sandip Homchaudhuri ,  Srinivas Katar ,  Chao Zou ,  Alireza Raissinia ,  Lei Li ,  Deepak Nagawade

IPC: H04L1/00 ,  H04W28/02 ,  H04W28/08

CPC classification number: H04L1/0018 ,  H04W28/0284 ,  H04W28/0958

Abstract: This disclosure provides systems, methods, apparatus, including computer programs encoded on computer storage media that support station performance enhancement with multi-link operations. An example method may include determining at least one network metric related to at least one link between a station (STA) and access points (APs) and determining at least one connection parameter related to at least one application operating on the STA. The method may include selecting a mode of multi-link operations based at least in part on the network metric and the connection parameter, wherein the mode of multi-link operations comprises one or more of: a multi-link mode in which the STA operates over a first link and a second link at a same time or a single-link mode in which the STA operates over one of the first or second links and communicating with the one or more APs according to the selected mode.

公开(公告)号：US11917542B2

公开(公告)日：2024-02-27

申请号：US17752103

申请日：2022-05-24

Applicant: QUALCOMM Incorporated

Inventor： Sandip Homchaudhuri ,  Steve Saed ,  Srikant Kuppa ,  Guido Robert Frederiks ,  Lian Chen ,  Deepak Shahaji Nagawade ,  Vishwanath Tantry

IPC: H04W52/02

CPC classification number: H04W52/0229

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.