公开(公告)号：US09565594B2

公开(公告)日：2017-02-07

申请号：US14229571

申请日：2014-03-28

Applicant: QUALCOMM Incorporated

Inventor： Shu Du ,  Srinivasa Kumar Duvvuri ,  James Simon Cho ,  Vipin Kumar Mehta ,  Guido Robert Frederiks ,  Arunkumar Jayaraman ,  Matthew Daniel Smith

IPC: H04W28/14 ,  H04W92/10 ,  H04W84/12 ,  H04W28/06 ,  H04L12/709

CPC classification number: H04W28/14 ,  H04L45/245 ,  H04W28/06 ,  H04W28/065 ,  H04W84/12 ,  H04W92/10

Abstract: Methods, systems, and devices are described for establishing a virtual communication link including at least a first and second physical link between two devices. A single virtual packet queue of a device may receive one or more data packets to be transmitted via the virtual communication link. The single virtual packet queue may attach a virtual sequence number to each of the one or more data packets and send the one or more data packets to one or more of the first or the second physical link according to the assigned virtual sequence numbers. The one or more packets may then be communicated via the first and/or second physical links according to link specific sequence numbers, such as medium access control (MAC) sequence numbers, assigned to the one or more data packets by the first and/or second physical links.

Abstract translation: 描述了用于建立包括两个设备之间的至少第一和第二物理链路的虚拟通信链路的方法，系统和设备。 设备的单个虚拟分组队列可以接收经由虚拟通信链路发送的一个或多个数据分组。 单个虚拟分组队列可以将虚拟序列号附加到一个或多个数据分组中的每一个，并且根据所分配的虚拟序列号将一个或多个数据分组发送到第一或第二物理链路中的一个或多个。 然后可以经由第一和/或第二物理链路根据链路特定序列号来传送一个或多个分组，例如通过第一和/或第二物理链路分配给一个或多个数据分组的媒体访问控制（MAC）序列号， 第二物理链接。

公开(公告)号：US09379794B2

公开(公告)日：2016-06-28

申请号：US13633849

申请日：2012-10-02

Applicant: QUALCOMM Incorporated

Inventor： Shu Du ,  Zhanfeng Jia ,  Ning Zhang ,  Qinghai Gao ,  Balaji Srinivasan Babu

IPC: H04B7/04 ,  H04W72/12

CPC classification number: H04B7/0452 ,  H04W72/121 ,  H04W72/1221

Abstract: An access point determines the buffered data for each station of a plurality of stations in a BSS and groups the stations with similar station characteristics. The transmission time to the stations in a group can be apportioned. The groups can be ordered based on station characteristics and a transmission history. A sounding for a group can be performed based on the order. The MU-MIMO transmission for the group can be performed until a first condition is met. If the first condition is met, then the sounding and the MU-MIMO transmission for a next group can be performed, according to the order, until a second condition is met. The first condition can include an apportioned transmission time having expired and/or the buffers for the group being flushed. The second condition can include new data having been buffered by the AP and/or all buffered data having been transmitted.

Abstract translation: 接入点确定BSS中多个站的每个站的缓冲数据，并对具有相似站特征的站进行分组。 可以分配到组中的站的传输时间。 可以根据车站特性和发送历史来订购组。 可以根据订单执行组的探测。 可以执行组的MU-MIMO传输，直到满足第一条件。 如果满足第一条件，则可以根据顺序执行下一组的发声和MU-MIMO传输，直到满足第二条件。 第一个条件可以包括分配的传输时间已经到期，和/或被刷新的组的缓冲区。 第二条件可以包括已被AP缓冲的新数据和/或已经发送的所有缓冲数据。

公开(公告)号：US09148816B2

公开(公告)日：2015-09-29

申请号：US13921860

申请日：2013-06-19

Applicant: QUALCOMM Incorporated

Inventor： Shu Du ,  Zhanfeng Jia ,  Chin-Hung Chen ,  Ning Zhang

IPC: H04W28/02 ,  H04L1/00 ,  H04L5/00

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：US20150023245A1

公开(公告)日：2015-01-22

申请号：US13943872

申请日：2013-07-17

Applicant: QUALCOMM Incorporated

Inventor： Shu Du ,  Ning Zhang ,  Zhen Xie ,  James Simon Cho ,  Chin-Hung Chen ,  Kai Shi

IPC: H04W16/26

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，其中可以将第一类型的业务从网关接入点（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：US20140269468A1

公开(公告)日：2014-09-18

申请号：US13831010

申请日：2013-03-14

Applicant: QUALCOMM INCORPORATED

Inventor： Zhanfeng Jia ,  Sandip HomChaudhuri ,  Shu Du

IPC: H04W24/02 ,  H04W52/02 ,  H04W72/04

CPC classification number: H04W24/02 ,  H04W28/18 ,  H04W36/06 ,  H04W52/0209 ,  H04W72/0453 ,  H04W76/15 ,  H04W88/06 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/22

Abstract: Systems and methods are disclosed for coordinating operation on multiple frequency bands between two or more multiple concurrent band (MCB) devices. The band switch protocols may include sending information on a second band after a communications link has been established on a first band. The receiving device may treat the transmission of the frame on the new band as a message to switch bands, such that the transmitting and receiving devices may conduct subsequent communications on the new band. Further, the band switch protocols allow for seamless operation over the band switch event. As a result, a frequency band having desired performance characteristics may be selected dynamically.

Abstract translation: 公开了用于在两个或更多个并行带（MCB）设备之间的多个频带上的协调操作的系统和方法。 频带交换协议可以包括在第一频带上建立通信链路之后在第二频带上发送信息。 接收设备可以将新频带上的帧的传输视为切换频带的消息，使得发射和接收设备可以在新频带上进行后续的通信。 此外，频带切换协议允许通过频带切换事件的无缝操作。 结果，可以动态地选择具有期望的性能特征的频带。

公开(公告)号：US20140219110A1

公开(公告)日：2014-08-07

申请号：US13762338

申请日：2013-02-07

Applicant: QUALCOMM INCORPORATED

Inventor： Shu Du ,  Zhanfeng Jia ,  Ning Zhang ,  Chin-Hung Chen ,  James S. Cho ,  Rahul Tandra ,  Qinghai Gao

IPC: H04W24/02

CPC classification number: H04W24/02 ,  H04B7/0452 ,  H04L1/0007

Abstract: A method of providing aggregated MAC protocol data unit (AMPDU) duration control in a wireless communication device includes setting an AMPDU duration. Pass/fail statistics are collected for each MPDU of an AMPDU in a time window, W. A packet error rate (PER) difference is calculated between first and last sets of MPDUs for each AMPDU in the window. An average PER difference is calculated across all AMPDUs in the window. When the average PER difference is greater than a first threshold, then the AMPDU duration is decreased. When the difference is less than a second threshold, then the AMPDU duration is increased. When the difference is within the first and the second thresholds, then the method returns to the step of collecting for a next time window. The AMPDU duration can also be adjusted based on detected Doppler and line-of-sight transmissions.

Abstract translation: 在无线通信设备中提供聚合MAC协议数据单元（AMPDU）持续时间控制的方法包括设置AMPDU持续时间。 在时间窗口W中收集AMPDU的每个MPDU的通过/失败统计信息。在窗口中的每个AMPDU的第一组和最后一组MPDU之间计算分组错误率（PER）差异。 在窗口中的所有AMPDU之间计算平均PER差异。 当平均PER差大于第一阈值时，AMPDU持续时间减小。 当差值小于第二阈值时，AMPDU持续时间增加。 当差异在第一和第二阈值内时，该方法返回到下一个时间窗口的收集步骤。 AMPDU持续时间也可以根据检测到的多普勒和视线传输进行调整。

公开(公告)号：US09351241B2

公开(公告)日：2016-05-24

申请号：US14041209

申请日：2013-09-30

Applicant: QUALCOMM Incorporated

Inventor： Zhanfeng Jia ,  Shu Du

IPC: G08C17/00 ,  H04W52/02 ,  H04W72/12 ,  H04W84/12

CPC classification number: H04W52/02 ,  H04W52/0212 ,  H04W72/1263 ,  H04W84/12 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/162 ,  Y02D70/22

Abstract: An access point may transmit, to a first wireless device, a message indicating a busy period of the access point. The busy period is a time during which the access point will perform wireless operations with at least a second wireless device different from the first wireless device. During the busy period, the access point may refrain from transmitting from the access point to the first wireless device. The message indicating the busy period may include a duration of the busy period. The message indicating the busy period may be included in a portion of a data transmission to the first wireless device. The first wireless device may enter a low power mode (e.g., sleep operating state) responsive to the busy period.

Abstract translation: 接入点可以向第一无线设备发送指示接入点的繁忙时段的消息。 繁忙时段是接入点将与不同于第一无线设备的至少第二无线设备执行无线操作的时间。 在繁忙期间，接入点可以避免从接入点向第一无线设备发送。 指示繁忙时段的消息可以包括繁忙时段的持续时间。 指示繁忙时段的消息可以被包括在向第一无线设备的数据传输的一部分中。 响应于繁忙时段，第一无线设备可以进入低功率模式（例如，睡眠操作状态）。

公开(公告)号：US09326230B2

公开(公告)日：2016-04-26

申请号：US14048464

申请日：2013-10-08

Applicant: QUALCOMM Incorporated

Inventor： Sandip Homchaudhuri ,  Shu Du ,  Sumeet Kumar ,  Sohani Ganesh Rao ,  Paul Husted

IPC: H04W4/00 ,  H04W48/20 ,  H04W84/12

CPC classification number: H04W48/20 ,  H04L5/0055 ,  H04W36/14 ,  H04W40/244 ,  H04W84/12 ,  H04W88/08

Abstract: Methods, devices, and apparatuses are described for wireless communications using a multidimensional algorithm for roaming. In one aspect, an initial set of candidate access points (APs) is produced by a station using a roaming scan. The initial set may be identified based at least in part on an initial metric (e.g., beacon signal strength). A probe signal may be transmitted by the station to at least one of the candidate APs in the initial set and information may be received in response to the probe signals. The station may then identify a reduced set from the initial set based at least in part on the received information, where the reduced set is used to select a target AP. At least one additional metric may be identified and the probe signal may be configured to obtain information corresponding to the additional metrics. This information may be used by the station to select the candidate APs in the reduced set.

Abstract translation: 描述了使用用于漫游的多维算法的无线通信的方法，设备和装置。 在一个方面，候选接入点（AP）的初始集合由使用漫游扫描的站产生。 可以至少部分地基于初始度量（例如，信标信号强度）来识别初始设置。 探测信号可以由站发送到初始设置中的候选AP中的至少一个，并且响应于探测信号可以接收信息。 然后，站可以至少部分地基于接收到的信息来识别来自初始集合的缩减集合，其中使用缩减集合来选择目标AP。 可以识别至少一个附加度量，并且可以将探测信号配置为获得对应于附加度量的信息。 该信息可以由站使用以选择缩减集中的候选AP。

公开(公告)号：US09219569B2

公开(公告)日：2015-12-22

申请号：US13843720

申请日：2013-03-15

Applicant: QUALCOMM Incorporated

Inventor： Qinghai Gao ,  Vishnu Vardhan Bala Krishnan ,  Shu Du ,  Zhanfeng Jia

IPC: H04L12/28 ,  H04B7/14 ,  H04L1/00 ,  H04L1/16 ,  H04W28/22

CPC classification number: H04L1/0001 ,  H04L1/0003 ,  H04L1/0007 ,  H04L1/0009 ,  H04L1/0015 ,  H04L1/1614 ,  H04L1/1628 ,  H04W28/22

Abstract: Various aspects of the disclosure described herein provide for optimizing rate control during a selection of a communications profile from a set of communications profiles by taking into account effective frame aggregation size as a function of packet error rate (PER). An expected throughput may also be determined for each communications profile and updated after each transmission so that a communications profile having the highest expected throughput may be chosen for a particular frame transmission.

Abstract translation: 本文所描述的公开内容的各个方面提供了在通过考虑作为分组错误率（PER）的函数的有效帧聚合大小的情况下，在从一组通信简档选择通信简档期间优化速率控制。 还可以为每个通信简档确定期望的吞吐量，并且在每个传输之后更新，以便可以针对特定的帧传输选择具有最高预期吞吐量的通信简档。

公开(公告)号：US09124318B2

公开(公告)日：2015-09-01

申请号：US14059073

申请日：2013-10-21

Applicant: QUALCOMM Incorporated

Inventor： Shu Du ,  Qinghai Gao ,  James Simon Cho ,  Chin-Hung Chen ,  Didier Johannes Richard Van Nee

IPC: H04B7/04 ,  H04B7/06 ,  H04L1/00

CPC classification number: H04B7/0452 ,  H04B7/0617 ,  H04B7/0691 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/009 ,  H04L1/06 ,  H04L1/1621 ,  H04L1/1685

Abstract: An access point can include an array of antennas and a smart antenna selector. The smart antenna selector is configured to select a subset of antennas from the antenna array for use in multi-user multiple-input multiple-output (MU MIMO) data transmissions. Stations that are communicatively coupled to the access point can be selected for inclusion in a multi-user group based, at least in part, on performance measurements of the stations. Performance measurements are determined directly and indirectly from data transmissions sent in response to sounding packets. Antennas for use in MU MIMO data transmissions are selected for the antenna array based, at least in part, on previous antenna selections used for single user data transmissions.

Abstract translation: 接入点可以包括天线阵列和智能天线选择器。 智能天线选择器被配置为从天线阵列中选择天线的子集，以用于多用户多输入多输出（MU MIMO）数据传输。 可以至少部分地基于站的性能测量来选择通信地耦合到接入点的站点以包括在多用户组中。 性能测量直接和间接地从响应于声音分组发送的数据传输确定。 至少部分地基于用于单用户数据传输的先前天线选择天线阵列来选择用于MU MIMO数据传输的天线。