公开(公告)号：US11902191B2

公开(公告)日：2024-02-13

申请号：US17089303

申请日：2020-11-04

申请人： QUALCOMM Incorporated

发明人： Lin Yang ,  Bin Tian

IPC分类号： H04L5/00 ,  H04W72/0453 ,  H04W72/1263

CPC分类号： H04L5/0048 ,  H04W72/0453 ,  H04W72/1263

摘要： This disclosure provides methods, devices and systems for configuring tones for a distributed resource unit (RU) across a channel bandwidth to improve frequency diversity and available transmit power. A distributed RU may include a set of tones that may be allocated across a bandwidth that is greater than a bandwidth of the aggregate quantity of tones. The set of tones may include a set of data tones grouped into contiguous groups of one or more data tones and a set of non-contiguous pilot tones. The data tones may be mapped to useful tones over a center portion of a half-bandwidth of the channel. The pilot tones may be mapped near edge tones at edges of the channel bandwidth or near direct current tones at a center of the channel bandwidth. A system bandwidth may include one or more channel bandwidths associated with distributed RUs.

公开(公告)号：US11818698B2

公开(公告)日：2023-11-14

申请号：US17322097

申请日：2021-05-17

申请人： QUALCOMM Incorporated

发明人： Lin Yang ,  Bin Tian ,  Youhan Kim

IPC分类号： H04W72/0453 ,  H04L5/00 ,  H04W52/34

CPC分类号： H04W72/0453 ,  H04L5/0044 ,  H04W52/346

摘要： This disclosure provides methods, devices and systems for increasing the transmit power of wireless communication devices operating on power spectral density (PSD)-limited wireless channels. Some implementations more specifically relate to physical layer (PHY) convergence protocol (PLCP) protocol data unit (PPDU) designs that support distributed transmission. In some implementations, a PPDU may be generated based on one or more legacy tone plans. In such implementations, a portion of the PPDU may be modulated on a number (M) of tones representing a logical RU, and the M tones may be further mapped to M noncontiguous subcarrier indices in accordance with a distributed tone plan. In some other implementations, a PPDU may be generated based on a distributed tone plan. In such implementations, a portion of the PPDU may be modulated on a number (M) of tones coinciding with M noncontiguous subcarrier indices in accordance with the distributed tone plan.

公开(公告)号：US11805431B2

公开(公告)日：2023-10-31

申请号：US17092702

申请日：2020-11-09

申请人： QUALCOMM Incorporated

发明人： Lin Yang ,  Bin Tian ,  Stephen Jay Shellhammer ,  Dung Ngoc Doan ,  Sameer Vermani ,  Jialing Li Chen

IPC分类号： H04W24/08 ,  H04L27/26 ,  H04W84/12

CPC分类号： H04W24/08 ,  H04L27/2627 ,  H04W84/12

摘要： This disclosure provides methods, devices and systems for link adaptation in wireless communications. Some implementations more specifically relate to transmitter-based modulation and coding scheme (MCS) selection. A transmitting device transmits a test packet, over a wireless channel, to a receiving device. The receiving device generates one or more signal-to-interference-plus-noise ratio (SINR) estimates for the wireless channel based on the received sounding packet. In some aspects, each SINR estimate may be associated with a particular modulation order. In some other aspects, each SINR estimate may be generated based on a transmitter configuration or a receiver type to be used for subsequent communications between the transmitting device and the receiving device. The receiving device transmits feedback, including the SINR estimates, to the transmitting device. The transmitting device then selects an MCS to be used for subsequent communications with the receiving device based on the SINR estimates and associated modulation orders.

公开(公告)号：US11800467B2

公开(公告)日：2023-10-24

申请号：US17943677

申请日：2022-09-13

申请人： QUALCOMM Incorporated

发明人： Lochan Verma ,  Bin Tian ,  Sameer Vermani ,  Lin Yang

IPC分类号： H04W56/00 ,  H04J3/06 ,  H04L27/26 ,  H04L5/00 ,  H04L69/28 ,  H04W88/08

CPC分类号： H04W56/001 ,  H04J3/067 ,  H04L5/0044 ,  H04L27/2602 ,  H04L27/2605 ,  H04L27/2613 ,  H04L69/28 ,  H04L27/26035 ,  H04W88/08

摘要： This disclosure provides systems, methods, apparatus, including computer programs encoded on computer storage media for orthogonal multiplexing of high efficiency (HE) and extremely high throughput (EHT) wireless traffic. Devices in a wireless local area network (WLAN) may operate under HE or EHT conditions. An access point (AP) may support both HE and EHT communications with WLAN devices. To enable substantially simultaneous downlink HE and EHT transmissions and substantially simultaneous uplink HE and EHT transmissions, the AP may support orthogonal frequency-division multiple access (OFDMA) of HE and EHT transmissions. For example, pre-HE and pre-EHT modulated fields, HE and EHT modulated fields, and payloads may be aligned in time for the HE and EHT transmissions. The AP may ensure orthogonality for multiplexing the HE and EHT transmissions based on the alignment. In some implementations, a trigger frame may be utilized to indicate uplink transmission alignments.

公开(公告)号：US11637723B2

公开(公告)日：2023-04-25

申请号：US17097812

申请日：2020-11-13

申请人： QUALCOMM Incorporated

发明人： Lin Yang ,  Bin Tian ,  Jialing Li Chen ,  Louay Jalloul ,  Vincent Knowles Jones, IV ,  Ning Zhang ,  Chi-Lin Su ,  Ahmad Abdulrahman Mohammed

IPC分类号： H04L25/02 ,  H04L27/26 ,  H04W72/04 ,  H04L5/00 ,  H04W72/044

摘要： Methods, systems, and devices for wireless communication are described. In some systems (e.g., Wi-Fi systems), a transmitting device such as an access point (AP) or mobile station (STA), may identify a number of spatial streams for a data transmission that is less than a number of transmit antennas, and may transmit a packet over a channel. In a first implementation, the packet may be formatted in a multi-user frame format, with a number of long training field (LTF) symbols equal to the number of transmit antennas. In a second implementation, the packet may be a null data packet (NDP), and the device may transmit a separate data packet. In a third implementation, the packet may be formatted in single-user frame format with a modified LTF. A receiving device may receive the packet, and may perform channel estimation and power amplifier (PA) distortion cancellation based on the received packet.

公开(公告)号：US20230035113A1

公开(公告)日：2023-02-02

申请号：US17390850

申请日：2021-07-30

申请人： QUALCOMM Incorporated

发明人： Stephen Jay Shellhammer ,  Lin Yang ,  Yanjun Sun ,  Bin Tian

IPC分类号： H04W72/04

摘要： This disclosure provides methods, devices and systems for increasing the transmit power of wireless communication devices operating on power spectral density (PSD)-limited wireless channels. Some implementations more specifically relate to signaling in a trigger frame to support distributed transmissions via distributed resource units (dRUs). In some implementations, an access point (AP) may transmit a trigger frame soliciting a trigger-based (TB) physical layer convergence protocol (PLCP) protocol data unit (PPDU) from a wireless station (STA), where the trigger frame carries RU allocation information identifying a distributed resource unit (dRU) allocated for the STA and carries tone mapping information indicating a selected spreading bandwidth design for the wireless channel or subchannel. The AP can support channel puncturing by selecting a particular spreading bandwidth design that controls how dRUs are mapped to non-contiguous tones spanning respective spreading bandwidths.

公开(公告)号：US11546938B2

公开(公告)日：2023-01-03

申请号：US16988624

申请日：2020-08-08

申请人： QUALCOMM Incorporated

发明人： Jialing Li Chen ,  Sameer Vermani ,  Lin Yang ,  Bin Tian ,  Vincent Knowles Jones, IV ,  Youhan Kim

IPC分类号： H04W74/00 ,  H04L5/00 ,  H04W72/04 ,  H04L69/18 ,  H04L69/22 ,  H04W84/12

摘要： This disclosure provides methods, devices and systems for wireless communication, and particularly, methods, devices and systems for including signaling regarding enhanced features of new wireless communication protocols. The signaling may be included in various portions of a physical layer preamble of a wireless transmission. In some implementations, the physical layer preamble may be used to indicate puncturing of subbands or content channels that may carry further signaling in accordance with preamble signaling designs of this disclosure. The physical layer preamble signaling be parallelized for different subchannels of a wireless channel that consists of multiple subchannels. Some implementations of the physical layer preambles may be used to multiplex different types of wireless local area network communications into different subsets of the plurality of subchannels of the wireless channel.

公开(公告)号：US11272490B2

公开(公告)日：2022-03-08

申请号：US16402492

申请日：2019-05-03

申请人： QUALCOMM Incorporated

发明人： Lochan Verma ,  Bin Tian ,  Sameer Vermani ,  Lin Yang

IPC分类号： H04W72/04 ,  H04B7/0452 ,  H04L1/00

摘要： Techniques for control signaling in extreme high throughput (EHT) environments are described. A message transmitted by an access point (AP) may allocate resources to a plurality of stations (STAs). The AP may be configured to allocate up to 320 MHz of total bandwidth or up to sixteen spatial streams to one or more STAs. In some multiple-user multiple-input multiple-output (MU-MIMO) cases, the spatial configuration field may include a starting spatial stream field and a spatial stream number field. In some non-MU-MIMO cases, the spatial configuration field may be expanded by one bit or more. In some cases, content channels of a resource unit (RU) allocation table may span a frequency segment of 40 MHz.

公开(公告)号：US11245501B2

公开(公告)日：2022-02-08

申请号：US16559571

申请日：2019-09-03

申请人： QUALCOMM Incorporated

发明人： George Cherian ,  Alfred Asterjadhi ,  Abhishek Pramod Patil ,  Sameer Vermani ,  Bin Tian ,  Stephen Jay Shellhammer ,  Lochan Verma ,  Lin Yang ,  Jialing Li Chen

IPC分类号： H04L5/00 ,  H04W16/14 ,  H04W72/04 ,  H04W74/08 ,  H04W88/08 ,  H04W84/12

摘要： Methods, systems, and devices for wireless communications are described for coordination between multiple access points (APs) for communications within a transmission opportunity (TxOP). A first AP may gain channel access for a TxOP, and may coordinate with at least a second AP to allow both the first AP and the second AP to transmit and receive wireless communications during the TxOP. The first AP, upon gaining channel access following a successful contention-based channel access procedure, may initiate a scheduling phase with the second AP to schedule of resources within the TxOP for the first and second APs. The first AP may initiate a multi-AP coordinated transmission phase following the scheduling phase, during which both the first AP and second AP may communicate with one or more associated STAs.

公开(公告)号：US20220038241A1

公开(公告)日：2022-02-03

申请号：US17388344

申请日：2021-07-29

申请人： QUALCOMM Incorporated

发明人： Sameer VERMANI ,  Alfred Asterjadhi ,  Yanjun Sun ,  Bin Tian ,  Lin Yang ,  Jialing Li Chen ,  George Cherian ,  Youhan Kim

IPC分类号： H04L5/00

摘要： 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.