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公开(公告)号：US20220038241A1
公开(公告)日：2022-02-03
申请号：US17388344
申请日：2021-07-29
Applicant: QUALCOMM Incorporated
Inventor： Sameer VERMANI , Alfred Asterjadhi , Yanjun Sun , Bin Tian , Lin Yang , Jialing Li Chen , George Cherian , Youhan Kim
IPC: H04L5/00
Abstract: This disclosure provides methods, devices and systems for generating enhanced sounding packets. Some implementations more specifically relate to sounding packet designs that support enhancements to wireless communication protocols associated with the Institute of Electrical and Electronics Engineers (IEEE) 802.11be amendment, and future generations, of the IEEE 802.11 standard. In some implementations, an enhanced null data packet announcement (NDPA) frame may be configurable to support multiple versions of the IEEE 802.11 standard. For example, the enhanced NDPA frame may be configured in accordance with a legacy or a non-legacy NDPA frame format. In some other implementations, the enhanced NDPA frame may include a subfield carrying information identifying a particular basic service set (BSS) which may be associated with one or more STA information fields. Still further, in some implementations, an Extremely High Throughput (EHT) PPDU may include signaling to indicate whether the EHT PPDU is formatted as a sounding NDP.
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公开(公告)号：US11147015B2
公开(公告)日：2021-10-12
申请号：US15898938
申请日：2018-02-19
Applicant: QUALCOMM Incorporated
Inventor： Yan Zhou , Yanjun Sun , Alfred Asterjadhi , George Cherian , Abhishek Pramod Patil
Abstract: Methods, systems, and apparatuses for wireless communications are described. Stations operating within a system may have a primary radio and a wakeup or low-power radio. Access points (APs) may send indications receivable by the wakeup radio to alert a station of a pending data transmission for the station. APs may transmit synchronization beacons for wakeup radios of the stations, and the transmission timing for the synchronization beacons may be adapted based on operating conditions of one or more stations. For example, an AP may skip transmissions of a synchronization beacon or may adapt the frequency of synchronization beacon transmissions based on various operating conditions or factors. Stations may report certain information about operating conditions or capabilities that may be used to adapt synchronization beacon transmissions.
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公开(公告)号：US20210014776A1
公开(公告)日：2021-01-14
申请号：US16926641
申请日：2020-07-10
Applicant: QUALCOMM Incorporated
Inventor： Abhishek Pramod PATIL , George Cherian , Alfred Asterjadhi , Sai Yiu Duncan Ho , Lochan Verma , Yanjun Sun
Abstract: This disclosure provides systems, methods, and apparatuses for associating a wireless communication device such as a wireless station (STA) of a STA multi-link device (MLD) with an access point (AP) MLD that includes a first AP associated with a first communication link of the AP MLD and includes one or more secondary APs associated with one or more respective secondary communication links of the first AP MLD. The AP MLD transmits a frame including an advertising information element carrying discovery information for the first AP of the AP MLD, including a first portion carrying discovery information for each secondary AP of the one or more secondary APs of the AP MLD, and including a second portion carrying common attributes of the one or more secondary APs of the AP MLD.
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公开(公告)号：US10602536B2
公开(公告)日：2020-03-24
申请号：US14849486
申请日：2015-09-09
Applicant: QUALCOMM Incorporated
Inventor： Zhong Yi Jin , Yanjun Sun , Nachiappan Valliappan
Abstract: Techniques for managing operation over a communication medium shared between Radio Access Technologies (RATs) are disclosed. In one example, one or more parameters of a Time Division Multiplexed (TDM) communication pattern may be set based on a utilization metric and a beacon schedule. In another example, subframe puncturing on the medium may be scheduled based on the beacon schedule.
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公开(公告)号：US20180324701A1
公开(公告)日：2018-11-08
申请号：US15970374
申请日：2018-05-03
Applicant: QUALCOMM Incorporated
Inventor： Yanjun Sun , Alfred Asterjadhi , George Cherian , Abhishek Pramod Patil , Yan Zhou , Bin Tian
CPC classification number: H04W52/0235 , H04L1/189 , H04W4/06 , H04W52/0219 , H04W52/0229 , H04W52/028
Abstract: Methods, systems, and devices for wireless communication are described. An access point (AP) may broadcast or multicast a wakeup transmission to wakeup radios (WURs) of a group of wireless and determine to retransmit the first wakeup transmission (e.g., for redundancy). The AP may transmit a second wakeup transmission to the WURs, the second wakeup transmission including an indication that the second wakeup transmission is a retransmission of the first wakeup transmission. The wireless devices may receive the indication that the second wakeup transmission is a retransmission, and may power up a main radio to receive a beacon based on whether or not the previous or originally wakeup transmission was received (e.g., determined via the indication included in the received wakeup message). In some cases, the AP may identify that some wireless devices failed to receive the first wakeup transmission, and may transmit a second wakeup transmission to those identified stations.
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Patent Agency Ranking
公开(公告)号：US20180295595A1
公开(公告)日：2018-10-11
申请号：US15944543
申请日：2018-04-03
Applicant: QUALCOMM Incorporated
Inventor： Stephen Jay Shellhammer , Yanjun Sun , Abhishek Pramod Patil , George Cherian , Alfred Asterjadhi , Bin Tian
Abstract: An access point (AP) may determine a time resolution for values indicative of wakeup signal transmission times based on a wakeup schedule of a station (STA) and a clock drift value for the STA and may transmit, to a primary radio of the STA, an indication of the time resolution. The AP may identify a transmission time of a wakeup signal for the STA and determine a value indicative of the transmission time. The AP may transmit, to a wakeup radio of the STA, the wakeup signal as a packet that includes the value indicative of the transmission time. The STA may determine the transmission time of the wakeup signal based on the wakeup schedule, the indication of the time resolution, and the value indicative of the transmission time and may update a local clock timing based on the transmission time.
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公开(公告)号：US10098083B2
公开(公告)日：2018-10-09
申请号：US14678620
申请日：2015-04-03
Applicant: QUALCOMM Incorporated
Inventor： Yanjun Sun , Rahul Malik , Peerapol Tinnakornsrisuphap
Abstract: Methods, systems, and devices are described for dealing with mutual clock drifts for communications over multiple RATs by maintaining a guard interval. A guard interval is a time interval during which no transmissions should occur. For example, the guard interval may be set relative to a scheduled interference interval of a STA so that transmissions to the STA from an AP will not collide with different RAT (e.g., interference) transmissions/receptions even with clock drift (e.g., a guard interval at both sides of the scheduled interference interval). Such an approach may allow the clocks to be re-synchronized (e.g., by the STA notifying the AP of the schedule of interference interval) infrequently to avoid excessive signaling overhead, which would increase with an increase in the number of coexistence STAs being serviced by the AP.
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公开(公告)号：US20180288703A1
公开(公告)日：2018-10-04
申请号：US15936716
申请日：2018-03-27
Applicant: QUALCOMM Incorporated
Inventor： Yanjun Sun , George Cherian , Alfred Asterjadhi
Abstract: A wireless device may identify a transition from use of a main radio to use of a wakeup radio (WUR) of the wireless device is to occur. The wireless device may store the power state the main radio is operating in at the time of the transition. The wireless device may then power down the main radio and power up the WUR to perform the transition. Upon a transition back to use of the main radio from use of the WUR (e.g., in response to a wakeup transmission), the wireless device may power down the WUR and power up the main radio to the stored power state. Additionally, the wireless device may further store WUR power state information, such that upon exit and reentry of WUR operation, the wireless device may resume a previously used WUR power mode. Modified or newly defined uplink frames may indicate such power state transitions.
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公开(公告)号：US20180249412A1
公开(公告)日：2018-08-30
申请号：US15898938
申请日：2018-02-19
Applicant: QUALCOMM Incorporated
Inventor： Yan Zhou , Yanjun Sun , Alfred Asterjadhi , George Cherian , Abhishek Pramod Patil
CPC classification number: H04W52/0229 , H04W52/0206 , H04W52/0216 , H04W52/0225 , H04W56/0015 , H04W84/12 , Y02D70/00 , Y02D70/10 , Y02D70/14 , Y02D70/142 , Y02D70/144 , Y02D70/146 , Y02D70/22
Abstract: Methods, systems, and apparatuses for wireless communications are described. Stations operating within a system may have a primary radio and a wakeup or low-power radio. Access points (APs) may send indications receivable by the wakeup radio to alert a station of a pending data transmission for the station. APs may transmit synchronization beacons for wakeup radios of the stations, and the transmission timing for the synchronization beacons may be adapted based on operating conditions of one or more stations. For example, an AP may skip transmissions of a synchronization beacon or may adapt the frequency of synchronization beacon transmissions based on various operating conditions or factors. Stations may report certain information about operating conditions or capabilities that may be used to adapt synchronization beacon transmissions.
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公开(公告)号：US09801197B2
公开(公告)日：2017-10-24
申请号：US14706200
申请日：2015-05-07
Applicant: QUALCOMM Incorporated
Inventor： Yanjun Sun , Tao Luo , Jibing Wang
CPC classification number: H04W72/1215 , H04W16/14 , H04W72/1226 , H04W72/1289 , H04W88/06
Abstract: Methods and apparatuses for reducing interference with co-located radio access technologies (RATs) are described herein. A method includes identifying, by an access point (AP), scheduling information for transmissions to a wireless device for a first RAT and setting a schedule of transmissions from the AP to the wireless device in a second RAT based at least in part on the scheduling information to avoid downlink transmission times for the first RAT. Another example method includes identifying, by a wireless device, scheduling information for transmissions to the wireless device for a first RAT. The method also includes determining a proximities of the wireless device to a first network device of the first RAT and to a second network device of a second RAT. The method further includes forwarding the scheduling information to the second network device of the second RAT based at least in part on the determining the proximities.
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