公开(公告)号：WO2019006385A1

公开(公告)日：2019-01-03

申请号：PCT/US2018/040423

申请日：2018-06-29

Applicant: QUALCOMM INCORPORATED

Inventor： SHI, Kai ,  TIAN, Bin ,  KIM, Youhan ,  NANDA, Rashmi ,  VERMA, Lochan ,  ZHANG, Ning

IPC: H04W72/04 ,  H04L5/00 ,  H04W84/12

Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for sub-channel selection in a wireless network. In one aspect, a first message is generated at a first electronic device of a wireless network in response to a number of electronic devices of a wireless network being less than a threshold number. The first message indicates particular sub-channels of a transmission band that are to be used for a transmission in a single user (SU) mode of operation to a second electronic device of the wireless network. The method further includes sending the first message to the second electronic device. The first message indicates that a second message is to be sent to the second electronic device using the particular sub-channels. The method further includes sending the second message to the second electronic device via the transmission using the particular sub-channels.

公开(公告)号：WO2018222409A1

公开(公告)日：2018-12-06

申请号：PCT/US2018/033267

申请日：2018-05-17

Applicant: QUALCOMM INCORPORATED

Inventor： SU, Chi-Lin ,  KIM, Youhan ,  ZHANG, Ning

IPC: H04B7/06

CPC classification number: H04B7/0626 ,  H04B7/0417 ,  H04B7/0617 ,  H04B7/0695

Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for combining channel feedback obtained for multiple soundings and transmitting beamformed communications based on the combined channel feedback. In one aspect, a method includes transmitting, by a first wireless device, a first channel sounding using a first subset of antennas, receiving first channel feedback from a second wireless device based on the first channel sounding, transmitting a second channel sounding using a second subset of the antennas that partially overlaps with the first subset, receiving second channel feedback based on the second channel sounding, and transmitting a beamformed communication to the second wireless device based on the first and the second channel feedback.

公开(公告)号：WO2017210546A1

公开(公告)日：2017-12-07

申请号：PCT/US2017/035664

申请日：2017-06-02

Applicant: QUALCOMM INCORPORATED

Inventor： HOMCHAUDHURI, Sandip ,  YENGANTI, Pradeep Kumar ,  KUPPA, Srikant ,  JIA, Zhanfeng ,  ZHANG, Ning ,  GIDVANI, Ravi ,  THANDAVESWARAN, Subramania Sharma ,  KONDA, Ravi

IPC: H04W72/04 ,  H04W74/00 ,  H04W84/12 ,  H04W72/06 ,  H04W28/18

CPC classification number: H04B7/0691 ,  H04B7/0413 ,  H04B7/0617 ,  H04B7/0689 ,  H04B7/0697 ,  H04B17/318 ,  H04L43/16 ,  H04W84/12

Abstract: Methods, systems, and devices for wireless communication are described. A wireless device (e.g., an access point or a station) capable of supporting multiple chain configuration modes may monitor traffic on a wireless channel. The wireless device may, based on the monitoring, determine a series of values for a metric that is indicative of communication conditions. The metric may be a packet rate, channel congestion, or signal strength. The wireless device may dynamically select one of the supported chain configuration modes in which to operate based on the series of values for the metric. In some cases, the wireless device may compute a value for the metric based on the series of values and compare the value of the metric to a predetermined threshold. In such cases, selection of the chain configuration mode may be based on the results of the comparison. In some examples, one or metrics may be used.

Abstract translation: 描述了用于无线通信的方法，系统和设备。 能够支持多链配置模式的无线设备（例如，接入点或站）可以监视无线信道上的业务。 基于监控，无线设备可以确定指示通信条件的度量的一系列值。 度量可以是分组速率，信道拥塞或信号强度。 无线设备可以基于该度量的一系列值来动态地选择要在其中操作的所支持的链式配置模式之一。 在一些情况下，无线设备可以基于该一系列值计算该度量的值，并将该度量的值与预定阈值进行比较。 在这种情况下，链式配置模式的选择可以基于比较结果。 在一些示例中，可以使用一个或多个度量。

公开(公告)号：WO2016183293A1

公开(公告)日：2016-11-17

申请号：PCT/US2016/032035

申请日：2016-05-12

Applicant: QUALCOMM INCORPORATED

Inventor： JIA, Zhanfeng ,  CHO, James ,  KUMAR, Sumeet ,  HOMCHAUDHURI, Sandip ,  O'DONNELL, Ian ,  ZHANG, Ning ,  RAISSINIA, Alireza

IPC: H04W52/02 ,  H04W72/12

CPC classification number: H04W28/0289 ,  H04L5/0007 ,  H04W52/0219 ,  H04W52/0235 ,  H04W72/1263 ,  H04W84/12 ,  Y02D70/00 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/162 ,  Y02D70/22

Abstract: Apparatuses and methods in a wireless local area network are disclosed for delivering queued downlink (DL) data from an access point (AP 110) to a plurality of wireless stations (STAs). The AP 110 determines, for each of the plurality of STAs, a presence of a corresponding set of queued DL data, transmits a beacon frame 510 identifying which of the plurality of STAs has queued DL data, and transmits, to each of the identified STAs, permission 520 to request delivery of queued DL data. Next, AP 110 receives, from each of the identified STAs, a request 530 for delivery of the queued DL data. Then, AP 110 concurrently transmits, to each of the identified STAs, the corresponding set of queued DL data 540. The AP 110 preferably uses power save (PS) trigger frames 520 to schedule concurrent DL data transmissions to the plurality of STAs. By using PS trigger frames 520, the plurality of STAs does not need to contend with each other for medium access to request delivery of queued DL data. Instead, a number of STAs that receive the PS trigger frame 520 may concurrently transmit requests 530 for delivery of the queued DL data without contending with each other for medium access, thereby reducing delays associated with medium access contention operations. Upon receiving the requests 530, the AP 110 may concurrently transmit queued DL data 540 to multiple STAs using OFDMA communications or multi-user multiple-input multiple-output (MU-MIMO) communications. ln an alternative embodiment, the AP's permission and the STA's request are implicit. ln this case, the AP 110 and the receiving STA5 exchange PS-Trigger capabilities and/or negotiate a number of PS-Trigger parameters prior to the delivery of queued DL data from the AP 110 to the receiving STA5. For at least some implementations, the AP 110 may selectively use PS-Trigger frames to schedule delivery of queued DL data based on a level of congestion on the shared wireless medium. The STAs may indicate their PS-Trigger frame capabilities in any suitable manner, for example in an association request. The WLAN may be formed by a plurality of Wi-Fi access points that may operate according to the IEEE 802.11 family of standards.

Abstract translation: 公开了一种无线局域网中的装置和方法，用于将排队的下行链路（DL）数据从接入点（AP 110）传送到多个无线站（STA）。 AP 110针对多个STA中的每一个确定对应的一组排队的DL数据的存在，发送标识多个STA中的哪一个已经排队了DL数据的信标帧510，并将其发送到每个所识别的STA ，许可520请求传送排队的DL数据。 接下来，AP 110从每个所识别的STA接收用于传送排队的DL数据的请求530。 然后，AP 110向所标识的STA中的每一个同时发送对应的一组排队的DL数据540.AP 110优选地使用省电（PS）触发帧520来调度对多个STA的并发DL数据传输。 通过使用PS触发帧520，多个STA不需要彼此竞争以进行媒体访问以请求传送排队的DL数据。 相反，接收PS触发帧520的多个STA可以同时发送用于传送排队的DL数据的请求530，而不相互竞争用于媒体访问，从而减少与媒体访问争用操作相关联的延迟。 在接收到请求530时，AP 110可以使用OFDMA通信或多用户多输入多输出（MU-MIMO）通信同时将排队的DL数据540发送到多个STA。 在替代实施例中，AP的许可和STA的请求是隐含的。 在这种情况下，AP 110和接收STA5在从AP 110向接收STA5发送排队的DL数据之前交换PS触发能力和/或协商多个PS触发器参数。 对于至少一些实施方式，AP 110可以基于共享无线介质上的拥塞级别选择性地使用PS触发器帧来调度排队的DL数据的传送。 STA可以以任何合适的方式来指示它们的PS触发帧能力，例如在关联请求中。 WLAN可以由可以根据IEEE 802.11系列标准操作的多个Wi-Fi接入点形成。

公开(公告)号：WO2016171834A1

公开(公告)日：2016-10-27

申请号：PCT/US2016/023841

申请日：2016-03-23

Applicant: QUALCOMM INCORPORATED

Inventor： JIA, Zhanfeng ,  ZHANG, Ning ,  SU, David Kuochieh ,  CHEN, Xuetao

IPC: H04W48/16 ,  H04W48/20

CPC classification number: H04W48/18 ,  H04L1/1607 ,  H04W48/16 ,  H04W48/20 ,  H04W72/0406

Abstract: A system and method are disclosed that may allow a STA to request one or more non-associated APs to initiate channel sounding operations with the STA. In response to the request, a number of the non-associated APs may send one or more NDPs to the STA. The STA may use the received NDPs to determine a goodput value for each of the number of non-associated APs. The STA may then use the determined goodput values to select one of the number of non-associated APs with which to associate. Thereafter, the STA may initiate an association operation with the selected AP.

Abstract translation: 公开了一种系统和方法，其可以允许STA请求一个或多个非关联AP来发起与STA的信道探测操作。 响应于该请求，多个非关联AP可以向STA发送一个或多个NDP。 STA可以使用所接收的NDP来确定每个非关联AP的每个的输入值。 然后，STA可以使用所确定的输出值来选择与其关联的多个非关联AP中的一个。 此后，STA可以发起与所选择的AP的关联操作。

公开(公告)号：WO2016043954A1

公开(公告)日：2016-03-24

申请号：PCT/US2015/047561

申请日：2015-08-28

Applicant: QUALCOMM INCORPORATED

Inventor： ZHANG, Xiaoxin ,  ZHANG, Ning ,  ALDANA, Carlos Horacio ,  KIM, Youhan ,  DUA, Praveen ,  AGRAWAL, Meghna

IPC: H04W24/00 ,  H04W64/00

CPC classification number: H04W64/00 ,  H04L5/0055 ,  H04L47/283 ,  H04W24/00 ,  H04W52/0209 ,  H04W84/12 ,  Y02D70/00 ,  Y02D70/1222 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/162 ,  Y02D70/22

Abstract: A ranging operation between a first wireless device D1 and a second wireless D2 is performed by: sending (504), to the second wireless device, a data frame including a request for the second wireless device to report its actual SIFS duration to the first wireless device; determining (505) a time of departure (TOD) of the data frame; receiving (516), from the second wireless device, a response frame including SIFS information indicative of the actual SIFS duration of the second wireless device; determining (518) a time of arrival (TOA) of the response frame; and determining (522) a round trip time (RTT) of the data frame and the response frame using the TOD of the data frame, the TOA of the response frame, and the actual SIFS duration of the second wireless device. 501). Device D2 determines (508) the TOA of the received frame by capturing a time stamp, creates a response frame and determines (510) the TOD of the response frame, determines (512) ist actual SIFS duration, and embeds (514) the SIFS information into the response frame. The response frame is preferably an acknowledgement frame (ACK). Wireless devices D1 and D2 preferably include an SIFS database that stores a number of previously determined SIFS durations for the wireless device, one or more median SIFS durations for wireless device, and/or whether other wireless devices support ranging operations in accordance with the example embodiments. The exchange of ranging capabilities informs each of wireless devices D1 and D2 whether the other one supports capturing timestamps and/or is able to determine its own SIFS duration. In this manner, the ranging operations may be performed without estimating the SIFS duration of the second wireless device, thereby eliminating ranging errors resulting from uncertainties in the SIFS duration of the second wireless device.

Abstract translation: 第一无线设备D1和第二无线D2之间的测距操作通过以下步骤执行：向第二无线设备发送（504）包括对第二无线设备向第一无线设备报告其实际SIFS持续时间的请求的数据帧 设备; 确定（505）数据帧的出发时间（TOD）; 从第二无线设备接收（516）包括指示第二无线设备的实际SIFS持续时间的SIFS信息的响应帧; 确定（518）响应帧的到达时间（TOA）; 以及使用数据帧的TOD，响应帧的TOA和第二无线设备的实际SIFS持续时间来确定（522）数据帧和响应帧的往返时间（RTT）。 501）。 设备D2通过捕获时间标记来确定（508）接收到的帧的TOA，创建响应帧并确定（510）响应帧的TOD，确定（512）是实际SIFS持续时间，并嵌入（514）SIFS 信息进入响应框架。 响应帧优选地是确认帧（ACK）。 无线设备D1和D2优选地包括SIFS数据库，其存储针对无线设备的多个先前确定的SIFS持续时间，无线设备的一个或多个中间SIFS持续时间，和/或其他无线设备是否支持根据示例实施例的测距操作 。 测距功能的交换通知无线设备D1和D2中的每一个是否另一个支持捕获时间戳和/或能够确定其自己的SIFS持续时间。 以这种方式，可以在不估计第二无线设备的SIFS持续时间的情况下执行测距操作，从而消除由于第二无线设备的SIFS持续时间的不确定性导致的测距误差。

公开(公告)号：WO2015009469A1

公开(公告)日：2015-01-22

申请号：PCT/US2014/045521

申请日：2014-07-07

Applicant: QUALCOMM INCORPORATED

Inventor： DU, Shu ,  ZHANG, Ning ,  XIE, Zhen ,  CHO, James, Simon ,  CHEN, Chin-Hung ,  SHI, Kai

IPC: H04W76/02 ,  H04W84/04 ,  H04W88/10 ,  H04L12/725 ,  H04L12/851 ,  H04L29/06

CPC classification number: H04W16/26 ,  H04L45/304 ,  H04L47/24 ,  H04W28/0205 ,  H04W76/15 ,  H04W84/047 ,  H04W84/12 ,  H04W88/10

Abstract: Methods, systems, devices, and apparatuses are described for wireless communications in which first type of traffic may be transmitted from a gateway access point (AP) directly to a station. Beacon signals transmitted to the station are transmitted as part of the first type of traffic. A second type of traffic may be transmitted from the gateway AP to the station via at least one relay AP. The first type of traffic may include low-throughput traffic and may be transmitted over a long-range radio link ( e.g. , 2 GHz band link or sub-1 GHz band link). The second type of traffic may include high-throughput traffic and may be transmitted over at least one short-range radio link ( e.g. , 5 GHz band link). The gateway AP may receive low-throughput traffic directly from the station and high-throughput traffic from the station via the at least one relay AP.

Abstract translation: 对无线通信描述了方法，系统，设备和装置，其中第一类型的业务可以从网关接入点（AP）直接发送到站。 发送到站的信标信号作为第一类型的业务的一部分被传输。 第二类型的业务可以经由至少一个中继AP从网关AP发送到站。 第一类型的业务可以包括低吞吐量业务，并且可以通过远程无线电链路（例如，2GHz频带链路或子1GHz频带链路）来传输。 第二类型的业务可以包括高吞吐量业务，并且可以通过至少一个短距离无线电链路（例如，5GHz频带链路）来传送。 网关AP可以直接从站接收低吞吐量业务，并经由至少一个中继AP接收来自站的高吞吐量流量。

公开(公告)号：WO2014158784A1

公开(公告)日：2014-10-02

申请号：PCT/US2014/020124

申请日：2014-03-04

Applicant: QUALCOMM INCORPORATED

Inventor： DU, Shu ,  JIA, Zhanfeng ,  CHEN, Chin-Hung ,  ZHANG, Ning

IPC: H04L1/00

CPC classification number: H04W28/0231 ,  H04L1/0002 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0015 ,  H04L1/0016 ,  H04L5/0023 ,  H04L5/0046 ,  H04L5/006

Abstract: A wireless device is configured to switch data rates to account for temporary channel conditions or device configuration errors. Pre-selected data rates, more likely to achieve maximum goodput, are stored in a data rate table. The data rate table contains candidate data rates for each pre-selected data rate in the data rate table. When probe transmissions using the preselected data rates fail, dynamic rate probing is utilized to determine a possible cause and extent of the problem. The dynamic rate probing scheme transmits probe transmissions using the candidate data rates and tracks success or failure of these probe transmissions. An analysis of the probe transmissions is used to indicate a possible cause and/or extent of the problematic condition and to determine whether there is a need to reconfigure the data rates in the data rate table.

Abstract translation: 无线设备被配置为切换数据速率以考虑临时信道状况或设备配置错误。 预先选择的数据速率，更有可能实现最大的吞吐量，被存储在数据速率表中。 数据速率表包含数据速率表中每个预先选择的数据速率的候选数据速率。 当使用预选数据速率的探头传输失败时，利用动态速率探测来确定问题的可能原因和程度。 动态速率探测方案使用候选数据速率传输探测传输并跟踪这些探测传输的成功或失败。 探针传输的分析用于指示问题状况的可能的原因和/或程度，并且确定是否需要重新配置数据速率表中的数据速率。

公开(公告)号：WO2014144563A2

公开(公告)日：2014-09-18

申请号：PCT/US2014/029027

申请日：2014-03-14

Applicant: QUALCOMM INCORPORATED

Inventor： SU, David Kuochieh ,  ZHANG, Ning

CPC classification number: H04W52/0264 ,  G06F21/32 ,  G06F21/44 ,  H04L63/0861 ,  H04L63/0876 ,  H04W12/06 ,  Y02D70/00 ,  Y02D70/166 ,  Y02D70/26

Abstract: A beacon message is wirelessly transmitted from a first device. The first device receives a first response to the beacon message, wherein the first response includes identification values associated with a personal identification device. The first device communicates with a second device associated with the personal identification device. The personal identification device is authenticated based, at least in part, on the identification values and the communication with the second device.

Abstract translation: 从第一设备无线发送信标消息。 第一设备接收对信标消息的第一响应，其中第一响应包括与个人识别设备相关联的标识值。 第一设备与与个人识别设备相关联的第二设备通信。 至少部分地基于识别值和与第二设备的通信来认证个人识别设备。

公开(公告)号：WO2014078017A1

公开(公告)日：2014-05-22

申请号：PCT/US2013/065992

申请日：2013-10-21

Applicant: QUALCOMM INCORPORATED

Inventor： JIA, Zhanfeng ,  DU, Shu ,  ZHANG, Ning

IPC: H04L1/00 ,  H04L1/16

CPC classification number: H04W28/0236 ,  H04L1/0002 ,  H04L1/0019 ,  H04L1/0027 ,  H04L1/0033 ,  H04L1/1685 ,  H04L12/189 ,  H04L2001/0093 ,  H04W4/06

Abstract: A method of providing multicast rate control in a wireless communication device can include transmitting data frames to a plurality of stations in a multicast group with a first data rate. Acknowledgements (ACKs) can then be requested from a first subset of the plurality of stations. Frame losses can be determined using the ACKs from the first subset. A second data rate can be determined based on the frame losses with the first subset. A second subset of the plurality of stations can be selected based on the frame losses with the first subset. Data frames can be transmitted to the plurality of stations with the second data rate. Notably, ACKs only from the second subset of the plurality of stations are requested. Frame losses for the second subset can be determined using those ACKs. A current data rate can be adjusted based on the frame losses for the subset and at least one predetermined threshold. Data frames can be transmitted to the plurality of stations using the adjusted data rate.

Abstract translation: 一种在无线通信设备中提供多播速率控制的方法可以包括以多个第一数据速率向组播组中的多个站发送数据帧。 然后可以从多个站的第一子集请求致谢（ACK）。 可以使用来自第一子集的ACK来确定帧丢失。 可以基于第一子集的帧丢失来确定第二数据速率。 可以基于与第一子集的帧丢失来选择多个站的第二子集。 可以以第二数据速率将数据帧发送到多个站。 值得注意的是，请求仅来自多个站的第二子集的ACK。 可以使用这些ACK来确定第二子集的帧丢失。 可以基于子集的帧丢失和至少一个预定阈值来调整当前数据速率。 可以使用经调整的数据速率将数据帧发送到多个站。