公开(公告)号：WO2016161101A1

公开(公告)日：2016-10-06

申请号：PCT/US2016/025249

申请日：2016-03-31

Applicant: QUALCOMM INCORPORATED

Inventor： HOMCHAUDHURI, Sandip ,  BURRA, Gangadhar ,  RAISSINIA, Alireza

IPC: H04W88/06

CPC classification number: H04B7/0857 ,  H04B1/18 ,  H04B7/0825 ,  H04L1/00 ,  H04W24/04

Abstract: Methods, systems, and devices are described for wireless communication at a wireless communications device. The device may use several antennas to receive a signal, one of which may be shared between two radios. During signal reception, a radio may detect when the shared antenna is abruptly taken over by the other radio. The radio may detect the loss of the antenna by measuring an impedance mismatch. Alternatively, the radio may reference an antenna switch control that is used to facilitate the switch. After detection, the radio may recover from the antenna loss by adjusting signal processing. For example, the radio may modify a maximal ratio combining (MRC) operation. In certain examples, the device may disregard the signal version from the shared antenna in the computation of MRC weights. In some cases, the device may interrupt an MRC weight computation and use MRC weights from a previous calculation.

Abstract translation: 描述了在无线通信设备处的无线通信的方法，系统和设备。 设备可以使用几个天线来接收信号，其中之一可以在两个无线电之间共享。 在信号接收期间，无线电可以检测共享天线何时被其他无线电突然接管。 无线电可以通过测量阻抗失配来检测天线的损耗。 或者，无线电装置可以参考用于促进切换的天线切换控制。 检测后，无线电可以通过调整信号处理从天线损耗中恢复。 例如，无线电可以修改最大比组合（MRC）操作。 在某些示例中，在MRC权重的计算中，设备可以忽略来自共享天线的信号版本。 在某些情况下，设备可能会中断MRC权重计算，并使用先前计算的MRC权重。

公开(公告)号：WO2016069156A1

公开(公告)日：2016-05-06

申请号：PCT/US2015/052411

申请日：2015-09-25

Applicant: QUALCOMM INCORPORATED

Inventor： ALDANA, Carlos Horacio ,  HOMCHAUDHURI, Sandip ,  VAMARAJU, Santosh Kumar ,  MARRI SRIDHAR, Subash ,  ARROYO, Bernal

IPC: H04W64/00 ,  H04L29/08

CPC classification number: H04L43/106 ,  G01S5/0284 ,  H04L67/143 ,  H04L67/18 ,  H04W64/00

Abstract: In a procedure for determining distance (or angle) between a pair of electronic devices wirelessly connected to one another, a current session may be temporarily suspended on request and thereafter the current session may be resumed. Temporary suspension and resumption of the current session may, for example, eliminate starting a new session between the pair of electronic devices and repeating a determination of parameters that were initially agreed upon in the current session. Temporary suspension of a current session may be signaled wirelessly, by one electronic device to the other electronic device, for example, by setting a specific value in a specific field, to signal that the current session is to be paused now, in a frame or message transmitted from the pausing device to the to-be-paused device. The current session may be resumed without repeating determination of the initially-agreed upon parameters, by transmitting a frame to initiate measurement exchange.

Abstract translation: 在用于确定一对无线连接的电子设备之间的距离（或角度）的过程中，当前会话可以根据请求暂时中止，此后可以恢复当前会话。 例如，临时暂停和恢复本届会议可能会消除在该对电子设备之间开始新的会话，并重复确定当前会话中最初商定的参数。 当前会话的暂时中止可以通过一个电子设备无线地通过另一个电子设备来发信号，例如，通过在特定字段中设置特定值来表示当前会话现在要暂停的帧，或者 从暂停设备发送到待暂停设备的消息。 可以通过发送帧来启动测量交换，可以恢复当前会话而不重复首先同意的参数的确定。

公开(公告)号：WO2015050742A1

公开(公告)日：2015-04-09

申请号：PCT/US2014/056962

申请日：2014-09-23

Applicant: QUALCOMM INCORPORATED

Inventor： HOMCHAUDHURI, Sandip ,  BALIGANAPALLI NAGARAJU, Pradeep ,  CHANGLANI, Nitin, Ashok ,  YOUNG, Jason, Alexander ,  JAYARAMAN, Arunkumar

IPC: H04W52/02

CPC classification number: H04W52/0238 ,  H04W28/0284 ,  H04W52/0216 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/146

Abstract: Power saving for wireless communication devices by adjusting the amount of time, after a last transmission/reception of data, that the device remains in an awake mode listening for more data before the device enters a sleep mode. This time period may be referred to as inactivity time interval or inactivity timeout (ITO). The described features may be employed to improve power savings by taking metrics of channel congestion into account for determining the ITO. The appropriate ITO may be determined to be commensurate with ongoing transmission and/or reception activity. Because error may occur in estimating channel congestion and/or transmission/reception activity, latency bounds based on estimation errors may be managed by classifying the operational mode into multiple regions and employing techniques for mitigating error in congestion estimation based at least in part on the operational mode.

Abstract translation: 通过在设备进入休眠模式之后，通过调整数据的最后一次发送/接收之后的时间量，使设备保持在唤醒模式中监听更多的数据，从而为无线通信设备省电。 该时间段可以称为不活动时间间隔或不活动超时（ITO）。 所描述的特征可以用于通过考虑信道拥塞的度量来确定ITO来提高功率节省。 可以确定适当的ITO与正在进行的传输和/或接收活动相当。 由于在估计信道拥塞和/或发送/接收活动中可能发生错误，所以可以通过将操作模式分类为多个区域并采用用于减轻拥塞估计中的错误的技术来管理基于估计误差的等待时间范围，所述技术至少部分地基于操作 模式。

公开(公告)号：WO2014194147A1

公开(公告)日：2014-12-04

申请号：PCT/US2014/040098

申请日：2014-05-29

Applicant: QUALCOMM INCORPORATED

Inventor： ALDANA, Carlos Horacio ,  HOMCHAUDHURI, Sandip ,  HE, Xin ,  ZHANG, Xiaoxin ,  SHUKLA, Ashish Kumar

IPC: H04W64/00 ,  H04W24/00

CPC classification number: H04L43/0864 ,  G01S5/00 ,  G01S13/767 ,  H04L5/005 ,  H04W4/043 ,  H04W4/30 ,  H04W24/00 ,  H04W64/00 ,  H04W72/082 ,  H04W76/10

Abstract: Disclosed are systems, methods and devices for obtaining round trip time measurements for use in location based services. In particular implementations, a fine timing measurement request message wirelessly transmitted by a first transceiver device to a second transceiver device may permit additional processing features in computing or applying a signal round trip time measurement. Such a signal round trip time measurement may be used in positioning operations.

Abstract translation: 公开了用于获得用于基于位置的服务的往返时间测量的系统，方法和设备。 在特定实施方案中，由第一收发器设备无线传输到第二收发器设备的精确定时测量请求消息可以允许在计算或应用信号往返时间测量时的附加处理特征。 这种信号往返时间测量可以用于定位操作。

公开(公告)号：WO2014186520A1

公开(公告)日：2014-11-20

申请号：PCT/US2014/038095

申请日：2014-05-15

Applicant: QUALCOMM INCORPORATED

Inventor： CHO, James, Simon ,  JAYARAMAN, Arunkumar ,  FREDERIKS, Guido, Robert ,  JIA, Zhanfeng ,  DU, Shu ,  RAISSINIA, Alireza ,  WANG, Jibing ,  HOMCHAUDHURI, Sandip

IPC: H04W52/02

CPC classification number: H04W52/0238 ,  H04L1/08 ,  H04W52/0206 ,  H04W52/0216 ,  H04W52/0235 ,  H04W72/02 ,  H04W84/12 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/22

Abstract: Methods, systems, and devices are described for power conservation in a wireless communications system through efficient transmissions and acknowledgements of information between an AP and a station. The time between a determination by a station to enter a power saving mode and entering network sleep mode by the station may be reduced through a transmission, by an AP, of an MPDU to the station successive to an SIFS after transmission of an acknowledgement to the station of a PS-Poll frame from the station. The time to enter a power saving mode by a station may also be reduced through transmission of A-MPDUs in which a last MPDU of the A-MPDU has an indicator bit cleared to indicate no additional data is to be transmitted. An AP may prevent a retransmission of an MPDU to the station in the absence of an acknowledgement from the station, to further enhance efficiency.

Abstract translation: 描述了无线通信系统中的功率节省的方法，系统和设备，通过AP和站之间的有效传输和信息确认。 在站点确定进入节电模式并进入网络睡眠模式之间的时间可以通过AP向MPI发送确认之后的MPDU向连续的SIFS的站传输而减少 站点的PS-Poll帧。 由站点进入省电模式的时间也可以通过A-MPDU的传输来减少，其中A-MPDU的最后一个MPDU被清除以指示不发送附加数据。 在没有来自站的确认的情况下，AP可以阻止对站的MPDU的重传，以进一步提高效率。

公开(公告)号：WO2014186145A1

公开(公告)日：2014-11-20

申请号：PCT/US2014/036486

申请日：2014-05-02

Applicant: QUALCOMM INCORPORATED

Inventor： ZHANG, Xiaoxin ,  HOMCHAUDHURI, Sandip ,  ALDANA, Carlos Horacio

IPC: G01S5/02 ,  H04W64/00 ,  H04W56/00

CPC classification number: G01S5/0236 ,  G01S5/0226 ,  H04W56/002 ,  H04W64/00

Abstract: Methods, systems, and devices are described for a wireless positioning framework in which an access point (AP) broadcasts a message within a beacon interval that identifies a transmission schedule for a set of stations. The message may include an information element identifying the stations in the set. The set may be determined based on station clock drifts and/or a ranging accuracy sought by the AP. The AP may also provide a station identifier, and frame spacing and delay parameters, which may be used to determine a distinct backoff for each station. Using distinct backoffs allow the stations to avoid collisions when sending the transmissions. The AP may receive the transmissions according to the identified schedule and may determine a range (e.g., round-trip time) for each station in the set based at least on a time at which the respective transmission is received.

Abstract translation: 对于无线定位框架描述了方法，系统和设备，其中接入点（AP）在标识一组站的传输调度的信标间隔内广播消息。 消息可以包括识别集合中的站的信息元素。 该集合可以基于AP所寻求的站时钟漂移和/或测距精度来确定。 AP还可以提供站标识符和帧间隔和延迟参数，其可以用于确定每个站的不同的退避。 使用不同的后退允许站点在发送传输时避免冲突。 AP可以根据所识别的调度接收传输，并且可以至少基于接收相应传输的时间来确定该组中每个站的范围（例如，往返时间）。

公开(公告)号：WO2014165605A1

公开(公告)日：2014-10-09

申请号：PCT/US2014/032699

申请日：2014-04-02

Applicant: QUALCOMM INCORPORATED

Inventor： HOMCHAUDHURI, Sandip ,  DUNCAN, Joseph ,  ZHANG, Xiaoru ,  LEE, Meelan ,  JAYARAMAN, Arunkumar ,  LIN, Derrick, Chu ,  MEHTA, Srenik

IPC: G06F1/32 ,  H04W52/02

CPC classification number: H04W52/0229 ,  G06F1/3206 ,  G06F1/324 ,  G06F1/3296 ,  H04W52/0216 ,  H04W52/029 ,  Y02D10/126 ,  Y02D10/172 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/22 ,  Y02D70/23 ,  Y02D70/24

Abstract: Methods and apparatuses are described in which dynamic voltage and frequency scaling may be used to save power when processing packets in a wireless communications device. In some cases, inframe detection may allow the device to determine whether to transition from a first (e.g., lower) voltage level to a second (e.g., higher) voltage level to process one or more packets of a received frame. For some packet types the first voltage level may be maintained. In other cases, the device may determine a bandwidth to use from among multiple bandwidths supported by the device. The bandwidth may be determined based on channel conditions. A voltage level may be identified that corresponds to the determined bandwidth and a processing voltage may be scaled to the identified voltage level. The device may be configured to operate in wireless local area network (WLAN) and/or in a cellular network (e.g., LTE).

Abstract translation: 描述了在无线通信设备中处理分组时可以使用动态电压和频率缩放来节省功率的方法和装置。 在一些情况下，帧内检测可以允许设备确定是否从第一（例如较低）电压电平转换到第二（例如较高）电压电平以处理接收帧的一个或多个分组。 对于一些分组类型，可以维持第一电压电平。 在其他情况下，设备可以从设备支持的多个带宽中确定要使用的带宽。 可以基于信道条件来确定带宽。 可以识别对应于所确定的带宽的电压电平，并且可以将处理电压缩放到所识别的电压电平。 该设备可以被配置为在无线局域网（WLAN）和/或蜂窝网络（例如，LTE）中操作。

公开(公告)号：WO2014158960A1

公开(公告)日：2014-10-02

申请号：PCT/US2014/021105

申请日：2014-03-06

Applicant: QUALCOMM INCORPORATED

Inventor： BEHNAMFAR, Firouz ,  RAISSINIA, Alireza ,  HOMCHAUDHURI, Sandip

IPC: H04W72/12 ,  H04W88/10

CPC classification number: H04L5/0073 ,  H04L5/1469 ,  H04W16/14 ,  H04W84/12

Abstract: In one embodiment, a wireless access point (AP) receives messages from a wireless wide area network (WWAN) device, wherein these messages identify parameters of future WWAN frames. Each message identifies a starting time, an operating band, an upload/download sub-frame configuration, and a special sub-frame pattern of a WWAN frame. The AP uses the parameters defined by each received message to determine whether to transmit a beacon frame at a scheduled target beacon transmission time (TBTT), or delay the transmission of the beacon frame to a delayed TBTT. The AP will not delay the scheduled TBTT if the parameters defined by the received message indicate there are no co-existence problems. However, the AP will delay a transmission from the scheduled TBTT if this scheduled TBTT coincides with a downlink sub-frame of the WWAN frame, and the WWAN frame has an operating band subject to interference from the intended transmission.

Abstract translation: 在一个实施例中，无线接入点（AP）从无线广域网（WWAN）设备接收消息，其中这些消息标识未来WWAN帧的参数。 每个消息标识WWAN帧的开始时间，操作频带，上载/下载子帧配置和特殊子帧模式。 AP使用由每个接收到的消息定义的参数来确定是否在调度的目标信标发送时间（TBTT）下发送信标帧，或延迟信标帧到延迟TBTT的传输。 如果接收到的消息定义的参数表示没有共存问题，则AP不会延迟预定的TBTT。 然而，如果该调度TBTT与WWAN帧的下行链路子帧一致，则AP将延迟来自预定TBTT的传输，并且WWAN帧具有受到来自预期传输的干扰的操作频带。

公开(公告)号：WO2014031698A1

公开(公告)日：2014-02-27

申请号：PCT/US2013/055879

申请日：2013-08-20

Applicant: QUALCOMM INCORPORATED

Inventor： BEHNAMFAR, Firouz ,  HOMCHAUDHURI, Sandip ,  RAISSINIA, Alireza ,  HUSTED, Paul

IPC: H04W72/12

CPC classification number: H04W72/085 ,  H04L1/0003 ,  H04L1/0026 ,  H04W36/023 ,  H04W36/14 ,  H04W52/243 ,  H04W72/1215 ,  H04W84/12 ,  H04W88/06

Abstract: In a multi-radio user equipment (UE) various techniques may be used to buffer communications for a first radio access technology (RAT). A low channel quality for a second RAT is reported. An indication to halt downlink communications of the second RAT based on the reported low channel quality is received. The buffered communications by the first RAT when the second RAT downlink communications are halted are transmitted. An indication to the second RAT is sent to resume normal channel quality reporting.

Abstract translation: 在多无线电用户设备（UE）中，可以使用各种技术来缓冲第一无线电接入技术（RAT）的通信。 报告了第二RAT的低通道质量。 接收基于报告的低信道质量来停止第二RAT的下行链路通信的指示。 当第二RAT下行链路通信被停止时，由第一RAT的缓冲通信被发送。 发送对第二RAT的指示以恢复正常的信道质量报告。

公开(公告)号：WO2013154608A1

公开(公告)日：2013-10-17

申请号：PCT/US2012/066831

申请日：2012-11-28

Applicant: QUALCOMM INCORPORATED

Inventor： HOMCHAUDHURI, Sandip ,  RAISSINIA, Alireza

IPC: H04W52/02

CPC classification number: H04L27/2647 ,  H04W52/0229 ,  H04W52/028 ,  H04W52/0293 ,  H04W56/0035 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/22

Abstract: In a wireless communication system including a transmitter device and a receiver device, the receiver device may be configured to awake from a low power mode to receive beacons from the transmitter device. The receiver device may awaken an early reception interval prior to the beacon arrival time determined by the local clocks to account for inaccuracies in the local clocks and the transmitter clock. The early reception interval may be dynamically adjusted based upon an estimation of the clock errors to minimize the early reception interval.

Abstract translation: 在包括发射机设备和接收机设备的无线通信系统中，接收机设备可以被配置为从低功率模式唤醒以从发射机设备接收信标。 接收机设备可以在由本地时钟确定的信标到达时间之前唤醒早期接收间隔，以解决本地时钟和发射机时钟中的不准确。 可以基于时钟误差的估计来动态地调整早期接收间隔，以使早期接收间隔最小化。