公开(公告)号：US20190239243A1

公开(公告)日：2019-08-01

申请号：US16383541

申请日：2019-04-12

Applicant: QUALCOMM Incorporated

Inventor： Ahmed SADEK ,  Nachiappan VALLIAPPAN ,  Tamer KADOUS ,  Chirag PATEL ,  Tao LUO

IPC: H04W72/12 ,  H04W74/08 ,  H04W72/04 ,  H04L5/14 ,  H04W16/14 ,  H04L5/00

Abstract: Techniques for managing access to a shared communication medium are disclosed. Scheduling grants may be sent to different access terminals for different sets of resources for uplink transmission on the communication medium. A series of re-contention gaps may be scheduled for access terminal contention within or between the different sets of resources. Uplink and downlink transmission on the communication medium may be silenced during each of the series of re-contention gaps. Moreover, an access terminal may receive a scheduling grant that allocates a set of resources to the access terminal for uplink transmission on a communication medium and contend for access to the communication medium based on the scheduling grant. The access terminal may then selectively transmit uplink traffic over the allocated set of resources based on the contending.

公开(公告)号：US20170064729A1

公开(公告)日：2017-03-02

申请号：US15250765

申请日：2016-08-29

Applicant: QUALCOMM Incorporated

Inventor： Ahmed Kamel SADEK ,  Nachiappan VALLIAPPAN ,  Tamer Adel KADOUS ,  Chirag Sureshbhai PATEL ,  Tao LUO

IPC: H04W72/12 ,  H04L5/14 ,  H04W72/04 ,  H04W16/14 ,  H04L5/00

CPC classification number: H04W72/1247 ,  H04L5/0048 ,  H04L5/14 ,  H04W16/14 ,  H04W72/0446 ,  H04W72/0453 ,  H04W74/0833 ,  H04W84/12

Abstract: Techniques for managing access to a shared communication medium are disclosed. Scheduling grants may be sent to different access terminals for different sets of resources for uplink transmission on the communication medium. A series of re-contention gaps may be scheduled for access terminal contention within or between the different sets of resources. Uplink and downlink transmission on the communication medium may be silenced during each of the series of re-contention gaps. Moreover, an access terminal may receive a scheduling grant that allocates a set of resources to the access terminal for uplink transmission on a communication medium and contend for access to the communication medium based on the scheduling grant. The access terminal may then selectively transmit uplink traffic over the allocated set of resources based on the contending.

Abstract translation: 公开了用于管理对共享通信介质的访问的技术。 调度许可可以被发送到用于不同资源集合的不同的接入终端，用于在通信介质上进行上行链路传输。 一系列重新争用的差距可能被安排在不同资源集合之内或之间的接入终端争用。 通信介质上的上行链路和下行链路传输可能在每一个重新争用间隙的每一个期间被静音。 此外，接入终端可以接收向通信介质分配一组资源以进行上行链路传输的调度许可，并且基于调度许可来争取接入通信介质。 接入终端然后可以基于竞争选择性地在所分配的一组资源上发送上行链路业务。

公开(公告)号：US20170055285A1

公开(公告)日：2017-02-23

申请号：US15240584

申请日：2016-08-18

Applicant: QUALCOMM Incorporated

Inventor： Nachiappan VALLIAPPAN ,  Ahmed Kamel SADEK ,  Peter GAAL ,  Tamer Adel KADOUS ,  Andrei Dragos RADULESCU

IPC: H04W74/08 ,  H04W16/14

CPC classification number: H04W74/08 ,  H04L5/14 ,  H04W16/14 ,  H04W74/085

Abstract: Techniques for managing re-contention on a shared communication medium are disclosed. In order to facilitate re-contending for access to the communication medium, an access point may adjust one or more uplink transmission parameters associated with a triggering condition for invoking a contention timer. In addition or as an alternative, the access point may mute transmission on the communication medium during one or more symbol periods designated for transmission. In addition or as an alternative, the access point may configure a timing advance to create a re-contention gap.

公开(公告)号：US20150373582A1

公开(公告)日：2015-12-24

申请号：US14471840

申请日：2014-08-28

Applicant: QUALCOMM Incorporated

Inventor： Nachiappan VALLIAPPAN ,  Kiran SOMASUNDARAM ,  Ahmed Kamel SADEK

IPC: H04W28/08 ,  H04W16/14

CPC classification number: H04W28/08 ,  H04W16/14 ,  H04W28/20 ,  H04W72/082 ,  H04W72/085 ,  H04W72/1215 ,  H04W74/0808

Abstract: Systems and methods for dynamic bandwidth management for load-based equipment in unlicensed spectrum are disclosed. In an aspect, the disclosure provides a method for dynamic bandwidth management. The method includes obtaining training data by monitoring a plurality of channels in an unlicensed spectrum during a training period. The method further includes determining that at least a first channel of the plurality of channels is available for a transmission. The method also includes determining, based on the training data, whether to wait for an additional channel of the plurality of channels to become available for the transmission. Determining whether to wait may be based on either training data including probabilities that no additional channel is to become available within a transmission opportunity or a machine learning classification of a current state of the backoff counters based on training data including samples of previous states of backoff counters.

Abstract translation: 公开了用于非许可频谱中基于负载的设备的动态带宽管理的系统和方法。 在一方面，本公开提供了一种用于动态带宽管理的方法。 该方法包括通过在训练期间监视非许可频谱中的多个频道来获得训练数据。 该方法还包括确定多个信道中的至少第一信道可用于传输。 该方法还包括基于训练数据确定是否等待多个信道的附加信道变得可用于传输。 确定是否等待可以基于训练数据，包括在传输机会内没有附加信道将变得可用的概率的训练数据或基于包括退避计数器的先前状态的样本的训练数据的退避计数器的当前状态的机器学习分类 。

公开(公告)号：US20150319767A1

公开(公告)日：2015-11-05

申请号：US14268438

申请日：2014-05-02

Applicant: QUALCOMM Incorporated

Inventor： Kambiz AZARIAN YAZDI ,  Nachiappan VALLIAPPAN

IPC: H04W72/08 ,  H04W28/02 ,  H04B17/318 ,  H04B1/10

CPC classification number: H04W72/082 ,  H04B1/1027 ,  H04B17/318 ,  H04L1/1614 ,  H04L1/20 ,  H04W28/0242

Abstract: Interference management for a wireless device in a wireless communication system may operate by, for example, determining a loss pattern from one or more block acknowledgement (ACK) bitmaps. The loss pattern may comprise a plurality of values indicating reception success or reception failure of a corresponding media access control (MAC) protocol data unit (MPDU) at a receiving station. A run-length (RL) vector may be computed characterizing, in length and frequency of occurrence, runs of consecutive reception failures and/or reception successes in the loss pattern. The RL vector may be compared to a corresponding RL signature for distinguishing bursty from non-bursty interference. Based on the comparison, a bursty interference condition may be identified, and a bursty interference indicator may be generated based on the identification of the bursty interference condition.

Abstract translation: 无线通信系统中的无线设备的干扰管理可以通过例如从一个或多个块确认（ACK）位图确定丢失模式来操作。 丢失模式可以包括指示接收站处的对应的媒体访问控制（MAC）协议数据单元（MPDU）的接收成功或接收失败的多个值。 可以计算游程长度（RL）向量，其特征在于出现的长度和频率，连续接收失败的运行和/或丢失模式中的接收成功。 可以将RL向量与对应的RL签名进行比较，以区分突发与非突发干扰。 基于比较，可以识别突发干扰条件，并且可以基于突发干扰条件的识别来生成突发干扰指示符。

公开(公告)号：US20150318936A1

公开(公告)日：2015-11-05

申请号：US14268343

申请日：2014-05-02

Applicant: QUALCOMM Incorporated

Inventor： Nachiappan VALLIAPPAN ,  Kambiz AZARIAN YAZDI

IPC: H04B17/345 ,  H04W72/08 ,  H04W24/02 ,  H04B17/318

CPC classification number: H04L1/203 ,  H04L1/0002 ,  H04L1/1614

Abstract: Interference management for a wireless device in a wireless communication system may operate by, for example, determining a loss pattern from one or more block acknowledgement (ACK) bitmaps. The loss pattern may comprise a plurality of values indicating reception success or reception failure of a corresponding media access control (MAC) protocol data unit (MPDU) at a receiving station. A conditional MPDU error rate metric may be computed correlating the loss pattern values over a time window of interest. The conditional MPDU error rate metric may be compared to a corresponding bursty interference signature associated with a time-independence among the loss pattern values that is characteristic of bursty interference. Based on the comparison, a bursty interference condition may be identified, and a bursty interference indicator may be generated based on the identification of the bursty interference condition.

Abstract translation: 无线通信系统中的无线设备的干扰管理可以通过例如从一个或多个块确认（ACK）位图确定丢失模式来操作。 丢失模式可以包括指示接收站处的对应的媒体访问控制（MAC）协议数据单元（MPDU）的接收成功或接收失败的多个值。 可以计算条件MPDU错误率度量，以便在感兴趣的时间窗口上相关于丢失模式值。 可以将条件MPDU错误率量度与与突发干扰特征的损失模式值之间的时间无关性相关联的相应的突发干扰签名进行比较。 基于比较，可以识别突发干扰条件，并且可以基于突发干扰条件的识别来生成突发干扰指示符。

公开(公告)号：US20150311923A1

公开(公告)日：2015-10-29

申请号：US14491797

申请日：2014-09-19

Applicant: QUALCOMM Incorporated

Inventor： Nachiappan VALLIAPPAN ,  Ahmed Kamel SADEK

IPC: H04B1/00 ,  H04W16/14

CPC classification number: H04W16/14 ,  H04W88/10

Abstract: Systems and methods for differentiating between LTE and Wi-Fi signals based on distinguishing characteristics thereof are disclosed. A radio or receiver configured for processing signals associated with a first RAT can detect a signal associated with a second RAT, wherein the signals associated with the first RAT and the signal associated with the second RAT are received over a communications medium using an unlicensed frequency spectrum. One or more characteristics of the decoded signal can be detected or identified, such as a pilot or reference signal pattern, an interframe spacing, a cyclic prefix or guard interval structure, a bandwidth utilization, etc. The decoded signal can be determined as relating to the second RAT based at least in part on determining that the one or more characteristics correspond to the second RAT.

Abstract translation: 公开了基于区分特征的用于区分LTE和Wi-Fi信号的系统和方法。 配置用于处理与第一RAT相关联的信号的无线电或接收机可以检测与第二RAT相关联的信号，其中与第一RAT相关联的信号和与第二RAT相关联的信号通过通信介质使用未许可频谱 。 可以检测或识别解码信号的一个或多个特性，例如导频或参考信号模式，帧间间隔，循环前缀或保护间隔结构，带宽利用等。解码信号可以被确定为与 所述第二RAT至少部分地基于确定所述一个或多个特性对应于所述第二RAT。

公开(公告)号：US20150305040A1

公开(公告)日：2015-10-22

申请号：US14687600

申请日：2015-04-15

Applicant: QUALCOMM Incorporated

Inventor： Ping XIA ,  Ahmed Kamel SADEK ,  Nachiappan VALLIAPPAN

IPC: H04W72/04 ,  H04W74/08 ,  H04J3/16 ,  H04W16/14

Abstract: Techniques for channel selection and related operations in a shared spectrum environment are disclosed. In one example, a channel selector or the like may be used to select one of a number of available channels as an operating channel based on a comparison of cost functions for each of the available channels, with the cost functions being based on separate utility and penalty metrics. In another example, a channel scanner or the like may be used to trigger a channel scan in response to a channel quality metric indicating poor service for a threshold number or proportion of access terminals. In another example, an operating mode controller may be used to trigger a Time Division Multiplexing (TDM) mode on an operating channel in response to a utilization metric being above a threshold. The TDM mode may cycle operation between activated and deactivated periods in accordance with a TDM communication pattern.

Abstract translation: 公开了在共享频谱环境中的信道选择和相关操作的技术。 在一个示例中，可以使用频道选择器等来基于用于每个可用频道的成本函数的比较来选择多个可用频道中的一个作为操作信道，成本函数基于单独的效用和 罚款指标。 在另一示例中，可以使用信道扫描器等来响应于指示针对接入终端的阈值数量或比例的不良服务的信道质量度量来触发信道扫描。 在另一示例中，可以使用操作模式控制器来响应于高于阈值的使用度量在操作信道上触发时分复用（TDM）模式。 TDM模式可以根据TDM通信模式在激活和去激活周期之间循环操作。

公开(公告)号：US20150305030A1

公开(公告)日：2015-10-22

申请号：US14692224

申请日：2015-04-21

Applicant: QUALCOMM Incorporated

Inventor： Ahmed Kamel SADEK ,  Akula Aneesh REDDY ,  Nachiappan VALLIAPPAN ,  Ping XIA ,  Mohammad NAGHSHVAR ,  Tamer Adel KADOUS ,  Mingxi FAN

IPC: H04W72/04 ,  H04W16/14

CPC classification number: H04W72/0446 ,  H04W16/14

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 Multiplexing (TDM) communication pattern may be set to define activated periods and deactivated periods for communication over the medium. A first interlace may be selected among a plurality of interlaces for communication over the medium, the first interlace being reserved for a first operator. During the first interlace, transmission over the medium may be cycled in accordance with the TDM communication pattern, and deactivated during a second interlace among the plurality of interlaces that is reserved for a second operator.

Abstract translation: 公开了通过无线电接入技术（RAT）之间共享的通信介质来管理操作的技术。 在一个示例中，可以将时分复用（TDM）通信模式的一个或多个参数设置为定义用于通过介质进行通信的激活周期和停用周期。 可以在用于通过介质进行通信的多个交织中选择第一交错，第一交错被保留给第一运营商。 在第一交错期间，可以根据TDM通信模式循环媒体上的传输，并且在为第二操作者预留的多个交错之间的第二隔行扫描期间停用。

公开(公告)号：US20140269547A1

公开(公告)日：2014-09-18

申请号：US14105007

申请日：2013-12-12

Applicant: QUALCOMM Incorporated

Inventor： Nachiappan VALLIAPPAN ,  Christophe CHEVALLIER ,  Andrei Dragos RADULESCU ,  Cong SHEN

IPC: H04L5/00

CPC classification number: H04W16/02 ,  H04W16/32 ,  H04W28/04 ,  H04W88/085

Abstract: A base station includes a base unit and a plurality of remote antenna units (RAUs). Each of the RAUs includes a physical layer circuit (PHY). The PHYs are configured to each use the same physical layer identifier, but each PHY includes its own hardware for supporting users in the coverage area of that PHY. The base unit controls resource allocation for the RAUs to increase the capacity of the base station and/or reduce interference between PHYs.

Abstract translation: 基站包括基站单元和多个远程天线单元（RAU）。 每个RAU包括物理层电路（PHY）。 PHY被配置为每个使用相同的物理层标识符，但是每个PHY包括其自己的硬件，用于在该PHY的覆盖区域中支持用户。 基站单元控制RAU的资源分配以增加基站的容量和/或减少PHY之间的干扰。