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公开(公告)号：US11259285B2
公开(公告)日：2022-02-22
申请号：US16247538
申请日：2019-01-14
Applicant: QUALCOMM Incorporated
Inventor： Ravi Gidvani , Abhishek Pramod Patil , Alfred Asterjadhi , George Cherian
Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer-readable media, for co-located Basic Service Sets (BSSs). A BSS refers to an access point (AP), wireless channel configuration, and associated stations (STAs). In one aspect, a wireless local area network (WLAN) apparatus may operate multiple virtual access points (VAPs) and multiple BSSs. The BSS may be considered co-located if they are implemented in the same physical device (such as a WLAN apparatus). Furthermore, the BSSs may be considered co-hosted if they share the same band and wireless channel, but independently signal different management frames. To aid STAs in learning about the co-located or co-hosted BSSs, the present disclosure provides techniques to advertise the co-located or co-hosted BSSs. Further improvements for co-hosted BSSs include the use of control frames that can aggregate information for more than one co-hosted BSS sharing a same wireless channel.
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公开(公告)号：US20210153160A1
公开(公告)日：2021-05-20
申请号：US17114615
申请日：2020-12-08
Applicant: QUALCOMM Incorporated
Inventor： Ravi Gidvani , Sudheer Kumar Suryadevara , Carlos Horacio Aldan
Abstract: Disclosed are methods, systems and devices for obtaining a measurement of a range between two devices. For example, wireless stations may obtain a measurement of range between the wireless stations based, at least in part, on an exchange messages such as fine timing measurement (FTM) messages. In a particular implementation, FTM messages may be received at a transceiver device in a burst of FTM messages from a responding wireless station. An acknowledgement messages may be transmitted to the responding wireless station in response to receipt of the FTM message.
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公开(公告)号：US10893499B2
公开(公告)日：2021-01-12
申请号：US15370977
申请日：2016-12-06
Applicant: QUALCOMM Incorporated
Inventor： Ravi Gidvani , Sudheer Kumar Suryadevara , Carlos Horacio Aldana
Abstract: Disclosed are methods, systems and devices for obtaining a measurement of a range between two devices. For example, wireless stations may obtain a measurement of range between the wireless stations based, at least in part, on an exchange messages such as fine timing measurement (FTM) messages. In a particular implementation, FTM messages may be received at a transceiver device in a burst of FTM messages from a responding wireless station. An acknowledgement messages may be transmitted to the responding wireless station immediately in response to receipt of the FTM message.
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公开(公告)号：US20190268825A1
公开(公告)日：2019-08-29
申请号：US16182345
申请日：2018-11-06
Applicant: QUALCOMM Incorporated
Inventor： Abhishek Pramod Patil , Jouni Kalevi Malinen , Ravi Gidvani , Alfred Asterjadhi , George Cherian
Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer-readable media, for signaling basic service set (BSS) identifiers (BSSIDs). A group of BSSs may form a Multiple BSSID set in which one BSS sent management frames on behalf of other BSSs (referred to as non-transmitting BSSIDs). For example, a management frame (such as a Beacon Frame or Probe Response Frame) may include a list of BSSIDs for some or all of the non-transmitting BSSIDs in the Multiple BSSID set. An indicator in the management frame may indicate whether the management frame includes a partial list or complete list of non-transmitting BSSIDs in the Multiple BSSID set. The management frame may include a count or bitmap to indicate the quantity of BSSIDs in the Multiple BSSID set. A station (STA) may indicate which BSSIDs it has discovered and request the remaining BSSIDs in the Multiple BSSID set.
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35.发明授权公开(公告)号：US10379196B2
公开(公告)日：2019-08-13
申请号：US15191498
申请日：2016-06-23
Applicant: QUALCOMM Incorporated
Inventor： Carlos Horacio Aldana , Jeff Smith , Xiaoxin Zhang , Chia-Hui Lin , Yen-Feng Lee , Ravi Gidvani , Alecsander Eitan , Rahul Malik
Abstract: Disclosed embodiments facilitate wireless channel calibration, ranging, and direction finding, between networked devices. A method on a first station (STA) may comprise: broadcasting, at a first time, a first NDPA frame to a plurality of second STAs. The first NDPA frame may include a first bit indicating that one or more subsequent frames comprise ranging or angular information. After a Short Interval Frame Space (SIFS) time interval from the first time, a second frame may be broadcast. The second frame may be a Null Data Packet (NDP) frame. In response, a plurality of Compressed Beamforming (CBF) frames may be received at the first STA where each CBF frame may be received from a distinct corresponding second STA, and may include Channel Feedback Information field with information pertaining to communication channel between the first STA and the corresponding second STA. The communications may be encoded using Orthogonal Frequency Division Multiple Access.
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Patent Agency Ranking
公开(公告)号：US20180295624A1
公开(公告)日：2018-10-11
申请号：US15994798
申请日：2018-05-31
Applicant: QUALCOMM Incorporated
Inventor： Srinivas Katar , Amod Bodas , Ramaswamy Venkateshwaran , Farrukh Usmani , Ravi Gidvani , Hang Su
Abstract: Method, systems, and apparatuses are described for wireless communications. More particularly, a wireless station may connect to a wireless network using a first radio frequency (RF) band and detect a signal strength of the first RF band is greater than a roaming threshold. The wireless station may perform a plurality of scans for support by the wireless network of a second RF band in response to the detected signal strength. Each scan may occur when the signal strength of the first RF band is greater than the roaming threshold. The wireless station may selectively connect to the wireless network using the second RF band based at least in part on the scanning and a throughput supported by the wireless network over the second RF band. The first RF band may be a 2.4 GHz band and the second RF band may be a 5 GHz band.
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公开(公告)号：US20180103487A1
公开(公告)日：2018-04-12
申请号：US15730709
申请日：2017-10-11
Applicant: QUALCOMM Incorporated
Inventor： Alfred Asterjadhi , George Cherian , Abhishek Pramod Patil , Alireza Raissinia , Ravi Gidvani , James Simon Cho
CPC classification number: H04W74/002 , H04W24/02 , H04W74/02 , H04W84/12 , H04W92/18
Abstract: A wireless device (e.g., a station (STA)) may receive a transmission soliciting a control transmission (e.g., a soliciting transmission). The STA may identify a transmission parameter indicator, which may indicate a change in one or more parameters in a control response transmission parameter set (e.g., a set of parameters used for control transmissions in response to the soliciting transmission). The STA may transmit the control transmission in response to the soliciting transmission based on the identified transmission parameter indicator. The control response transmission parameter set may include a frame format, a physical layer convergence protocol (PLCP) protocol data unit (PPDU) format, a bandwidth, a modulation scheme, an encoding scheme, a modulation and coding scheme (MCS), a number of spatial streams (NSS), and/or a PPDU duration. In some cases, the transmission parameter indicator may indicate disabling or resumption of extended range (ER) single user (SU) PPDU format usage.
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公开(公告)号：US20170273017A1
公开(公告)日：2017-09-21
申请号：US15452660
申请日：2017-03-07
Applicant: QUALCOMM Incorporated
Inventor： Ravi Gidvani , Sandip HomChaudhuri , Vikram Phogat
CPC classification number: H04W52/0206 , H04W24/10 , Y02D70/142 , Y02D70/22
Abstract: Methods, systems, and devices for wireless communication are described. An access point (AP) may direct stations (STAs) to use a request-to-send (RTS)/clear-to-send (CTS) mode so the AP may perform power savings and off-channel operations without disrupting the communications of nearby devices. In some cases, the AP may use traffic conditions to identify a power save period and subsequently transmit an indication of an RTS/CTS mode to multiple STAs. In one example, the AP may power down at least one radio frequency (RF) chain and enter into a sleep mode. Additionally or alternatively, during the power save period the AP may receive an RTS from a STA and power up additional radio chains for MIMO communication. In some cases, the AP may identify an off-channel operations period based on traffic conditions and perform the off-channel operations after indicating the RTS/CTS mode to a set of STAs.
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39.发明申请公开(公告)号：US20170250831A1
公开(公告)日：2017-08-31
申请号：US15191493
申请日：2016-06-23
Applicant: QUALCOMM Incorporated
Inventor： Carlos Horacio Aldana , Jeff Smith , Xiaoxin Zhang , Chia-Hui Lin , Yen-Feng Lee , Ravi Gidvani , Alecsander Eitan , Rahul Malik
IPC: H04L12/18 , H04W24/10 , H04L12/841
CPC classification number: G01S5/0009 , G01S5/021 , G01S5/0226 , H04W4/02 , H04W4/029 , H04W24/10 , H04W84/12 , H04W88/02
Abstract: Disclosed embodiments facilitate wireless channel calibration, including ranging and direction finding, between wirelessly networked devices. In some embodiments. a method on a first station (STA) may comprise: transmitting a first NDPA frame to one or more second stations (STAs), the first NDPA frame comprising a first bit indicating that one or more subsequent frames comprise ranging or angular information; and transmitting, after a Short Interval Frame Space (SIFS) time interval, a second frame. The second frame may be one of: a Null Data Packet az (NDP_az) frame with information about a time of transmission of the NDP_az frame, or a Null Data Packet (NDP) frame, or a Beam Refinement Protocol (BRP) frame. The first NDPA frame may be unicast, multicast, or broadcast.
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公开(公告)号：US20170215037A1
公开(公告)日：2017-07-27
申请号：US15370502
申请日：2016-12-06
Applicant: QUALCOMM Incorporated
Inventor： Santosh Vamaraju , Carlos Horacio Aldana , Xiaoxin Zhang , Ravi Gidvani
CPC classification number: H04W4/023 , H04L5/0055 , H04W4/20 , H04W64/00 , H04W88/02
Abstract: Disclosed are methods, systems and devices for obtaining a range between devices based, at least in part, on an exchange of wireless messages. For example, wireless devices may obtain measurements of range based, at least in part, on an exchange fine timing measurement (FTM) messages. In one implementation, an initial FTM request message may be transmitted from a first wireless transceiver device to a second wireless transceiver device comprising one or more parameters indicative of a request for transmission of FTM messages in a particular format.
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