公开(公告)号：US20050085197A1

公开(公告)日：2005-04-21

申请号：US10964885

申请日：2004-10-14

Applicant: Rajiv Laroia ,  Junyi Li ,  Sundeep Rangan ,  Murari Srinivasan ,  Frank Lane ,  Prashanth Hande

Inventor： Rajiv Laroia ,  Junyi Li ,  Sundeep Rangan ,  Murari Srinivasan ,  Frank Lane ,  Prashanth Hande

IPC: H04B7/005 ,  H04B7/06 ,  H04B7/08 ,  H04L1/00 ,  H04W52/42 ,  H04B1/02 ,  H03C7/02 ,  H04B7/02 ,  H04B7/10 ,  H04L1/02

CPC classification number: H04B7/0604 ,  H01Q3/24 ,  H01Q3/2605 ,  H04B7/061 ,  H04B7/0691 ,  H04B7/0805 ,  H04L1/0026 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0026 ,  H04L5/006 ,  H04W52/42

Abstract: Transmit and/or receive diversity is achieved using multiple antennas. In some embodiments, a single transmitter chain within a wireless terminal is coupled over time to a plurality of transmit antennas. At any given time, a controllable switching module couples the single transmitter chain to one the plurality of transmit antennas. Over time, the switching module couples the output signals from the single transmitter chain to different transmit antennas. Switching decisions are based upon predetermined information, dwell information, and/or channel condition feedback information. Switching is performed on some dwell and/or channel estimation boundaries. In some OFDM embodiments, each of multiple transmitter chains is coupled respectively to a different transmit antenna. Information to be transmitted is mapped to a plurality of tones. Different subsets of tones are formed for and transmitted through different transmit chain/antenna sets simultaneously. The balance of tones allocated to the subsets for each antenna are changed as a function of predetermined information, dwell information, and/or channel condition feedback information.

Abstract translation: 使用多个天线实现发射和/或接收分集。 在一些实施例中，无线终端内的单个发射机链随时间耦合到多个发射天线。 在任何给定时间，可控开关模块将单个发射机链耦合到多个发射天线中的一个。 随着时间的推移，开关模块将来自单个发射机链的输出信号耦合到不同的发射天线。 切换决定基于预定信息，停留信息和/或信道条件反馈信息。 在一些驻留和/或信道估计边界上执行切换。 在一些OFDM实施例中，多个发射机链中的每一个分别耦合到不同的发射天线。 要发送的信息被映射到多个音调。 为不同的发射链/天线组同时形成和发送不同的音调子集。 分配给每个天线的子集的音调的平衡作为预定信息，停留信息和/或信道条件反馈信息的函数而改变。

公开(公告)号：US09544943B2

公开(公告)日：2017-01-10

申请号：US12939753

申请日：2010-11-04

Applicant: Arvind V. Santhanam ,  Karthika Paladugu ,  Prashanth Hande

Inventor： Arvind V. Santhanam ,  Karthika Paladugu ,  Prashanth Hande

IPC: H04W88/08 ,  H04W84/04 ,  H04W36/14

CPC classification number: H04W84/045 ,  H04W36/14

Abstract: In an embodiment, a user of a wireless communications device (WCD) is notified when operating in a serving area of a FEMTO access point (AP). In another embodiment, the WCD can notify an application server (AS) that the WCD is served by the FEMTO AP. In another embodiment, the AS can set a service level for a server-arbitrated communication session (CS) based on the FEMTO AP serving status of participating WCDs. In another embodiment, the FEMTO AP can determine to use a downlink control or signaling channel to transmit data to the WCD. In another embodiment, based on its serving FEMTO AP status, the WCD can (i) modify its participation level in the CS and/or (ii) selectively track usage. In another embodiment, the WCD or FEMTO AP can measure performance parameters of the CS to determine whether to trigger a handoff of the WCD to a different AP.

Abstract translation: 在一个实施例中，当在FEMTO接入点（AP）的服务区域中操作时，通知无线通信设备（WCD）的用户。 在另一实施例中，WCD可以通知应用服务器（AS）由FEMTO AP服务WCD。 在另一个实施例中，AS可以基于参与WCD的FEMTO AP服务状态为服务器仲裁的通信会话（CS）设置服务水平。 在另一个实施例中，FEMTO AP可以确定使用下行链路控制或信令信道来向WCD发送数据。 在另一个实施例中，基于其服务的FEMTO AP状态，WCD可以（i）修改其在CS中的参与级别和/或（ii）选择性地跟踪使用。 在另一个实施例中，WCD或FEMTO AP可以测量CS的性能参数以确定是否触发WCD到不同AP的切换。

公开(公告)号：US09191840B2

公开(公告)日：2015-11-17

申请号：US11486714

申请日：2006-07-14

Applicant: Rajiv Laroia ,  Junyi Li ,  Sundeep Rangan ,  Murari Srinivasan ,  Prashanth Hande ,  M. Scott Corson ,  Arnab Das

Inventor： Rajiv Laroia ,  Junyi Li ,  Sundeep Rangan ,  Murari Srinivasan ,  Prashanth Hande ,  M. Scott Corson ,  Arnab Das

IPC: H04W24/08 ,  H04B17/345 ,  H04B17/382 ,  H04W72/08

CPC classification number: H04W24/08 ,  H04B17/345 ,  H04B17/382 ,  H04W72/08

Abstract: A wireless terminal receives a broadcast uplink interference report request conveying a requested report type and/or a locally unique base station identifier. The wireless terminal receives and measures broadcast reference signals, e.g., beacon and/or pilot signals, transmitted from a plurality of base station attachment points. Specific type interference reports relate a current serving connection base station attachment point to a selected base station attachment point corresponding to the received base station identifier. Generic type interference reports relate a current serving base station connection attachment point to other unspecified base station attachment points whose broadcast reference signals have been detected by the wireless terminal. Sub-types of generic reports include summation function and maximum function reports. Timing information is sometimes used to determine report sub-type and/or sector type of the selected attachment point. The wireless terminal generates the requested report and transmits it to the current connection attachment point.

Abstract translation: 无线终端接收传送请求的报告类型和/或本地唯一的基站标识符的广播上行链路干扰报告请求。 无线终端接收并测量从多个基站附接点发送的广播参考信号，例如信标和/或导频信号。 特定类型的干扰报告将当前服务连接基站附接点与对应于所接收的基站标识符的所选择的基站附接点相关联。 通用型干扰报告将当前服务基站连接连接点与其广播参考信号已被无线终端检测到的其它未指定的基站附接点相关联。 通用报告的子类型包括求和函数和最大函数报告。 定时信息有时用于确定所选附件点的报告子类型和/或扇区类型。 无线终端生成请求的报告，并将其发送到当前的连接连接点。

公开(公告)号：US08831658B2

公开(公告)日：2014-09-09

申请号：US13288931

申请日：2011-11-03

Applicant: Arnaud Meylan ,  Jay Kumar Sundararajan ,  Gerardo Giaretta ,  Prashanth Hande ,  Arvind V. Santhanam ,  Satashu Goel

Inventor： Arnaud Meylan ,  Jay Kumar Sundararajan ,  Gerardo Giaretta ,  Prashanth Hande ,  Arvind V. Santhanam ,  Satashu Goel

IPC: H04B7/00 ,  H04L12/54 ,  H04L29/08 ,  G06F9/50 ,  H04W48/18 ,  H04M1/725 ,  H04W52/02 ,  H04W36/14 ,  H04W80/08 ,  H04L29/06 ,  H04L12/12 ,  H04W4/00 ,  H04W48/06 ,  H04W80/04 ,  H04W80/06 ,  H04W88/06

CPC classification number: H04L12/5692 ,  G06F9/5011 ,  H04L12/12 ,  H04L69/161 ,  H04L69/162 ,  H04L69/32 ,  H04M1/72519 ,  H04W4/60 ,  H04W28/02 ,  H04W36/14 ,  H04W48/06 ,  H04W48/18 ,  H04W52/02 ,  H04W52/0216 ,  H04W80/04 ,  H04W80/06 ,  H04W80/08 ,  H04W88/06 ,  Y02D70/1224 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/24

Abstract: A method of wireless communication includes intercepting a request from an application desiring use of communication resources. The intercepted request is held and is then evaluated to determine whether the held request can be released. The held request is released based on the outcome of the evaluation.

Abstract translation: 一种无线通信方法包括从希望使用通信资源的应用中截取请求。 被截取的请求被保留，然后被评估以确定所保持的请求是否被释放。 举行的请求是根据评估结果发布的。

公开(公告)号：US08750116B2

公开(公告)日：2014-06-10

申请号：US12268138

申请日：2008-11-10

Applicant: Prashanth Hande ,  Xinzhou Wu ,  Sundeep Rangan

Inventor： Prashanth Hande ,  Xinzhou Wu ,  Sundeep Rangan

IPC: H04L12/26 ,  H04W28/02

CPC classification number: H04W28/02 ,  H04L47/70 ,  H04W72/1252 ,  H04W74/002 ,  H04W84/18

Abstract: Methods and apparatus related to communicating and/or using load information in support of decentralized traffic scheduling decisions are described. Individual wireless terminals corresponding to a peer to peer connection which desire to communicate traffic signals make transmitter yielding and/or receiver yielding decisions on a traffic slot by traffic slot basis. Loading information is used to intentionally skew transmitter yielding decisions in response to conditions and/or needs in the system. A link load weight value is generated based on intended transmitter loading related information and/or intended receiver loading related information. Traffic request parameters and/or link load weight values are communicated between wireless communications devices in request and/or request response signaling. As part of a transmitter yielding decision, one or more of: a spillage value, weighted SINR, and an interference cost estimate is calculated based on: one or more link load weight values and channel condition measurement information.

Abstract translation: 描述了与支持分散式业务调度决策的通信和/或使用负载信息有关的方法和装置。 对应于对等连接的各个无线终端希望传送业务信号使业务时隙基于业务时隙的发射机收敛和/或接收者收益决定。 加载信息用于有意地根据系统中的条件和/或需要来偏移发射机的出错决定。 基于预期的发射机加载相关信息和/或预期的接收机加载相关信息来生成链路负载权重值。 在请求和/或请求响应信令中的无线通信设备之间传送业务请求参数和/或链路负载权重值。 作为发射机产生决定的一部分，基于：一个或多个链路负载权重值和信道条件测量信息来计算溢出值，加权SINR和干扰成本估计中的一个或多个。

公开(公告)号：US08670789B2

公开(公告)日：2014-03-11

申请号：US12730154

申请日：2010-03-23

Applicant: Rajiv Laroia ,  Junyi Li ,  Sundeep Rangan ,  Prashanth Hande

Inventor： Rajiv Laroia ,  Junyi Li ,  Sundeep Rangan ,  Prashanth Hande

IPC: H04W68/02

CPC classification number: H04W68/025 ,  Y02D70/00

Abstract: Methods and apparatus for efficient two-stage paging wireless communications systems are described. Wireless terminals are assigned to paging groups. A few first paging message information bits are modulated (using non-coherent modulation) into a first paging signal and communicated from a base station to wireless terminals. WTs wake-up, receive the first paging signal and quickly ascertain whether its paging group should expect a second paging signal, if so, the WT is operated to receive the second paging signal; otherwise, the WT goes back to sleep conserving power. The base station modulates (using coherent modulation) a number of second message information bits into a second paging signal and transmits the signal to WTs. From the information in first and second paging signals, a WT can determine that it is the paged WT and process the paging instructions. The intended paged WT can transmit an acknowledgement signal on a dedicated uplink resource.

Abstract translation: 描述了用于有效的两阶段寻呼无线通信系统的方法和装置。 无线终端被分配给寻呼组。 几个第一寻呼消息信息比特被调制（使用非相干调制）到第一寻呼信号中并从基站传送到无线终端。 WT唤醒，接收第一个寻呼信号，并快速确定其寻呼组是否应该预期第二个寻呼信号，如果是，则操作WT接收第二寻呼信号; 否则，WT回去睡眠节省电力。 基站将多个第二消息信息比特（使用相干调制）调制成第二寻呼信号，并将该信号发送给WT。 根据第一和第二寻呼信号中的信息，WT可以确定它是寻呼WT并处理寻呼指令。 预期的寻呼WT可以在专用上行链路资源上发送确认信号。

公开(公告)号：US08411646B2

公开(公告)日：2013-04-02

申请号：US11943517

申请日：2007-11-20

Applicant: Xinzhou Wu ,  Sundeep Rangan ,  Prashanth Hande ,  Arnab Das ,  Junyi Li

Inventor： Xinzhou Wu ,  Sundeep Rangan ,  Prashanth Hande ,  Arnab Das ,  Junyi Li

IPC: H04J3/00

CPC classification number: H04W72/1231 ,  H04W72/1278

Abstract: Systems and methodologies are described that facilitate scheduling uplink transmissions. For instance, a time sharing scheme can be utilized such that differing mobile devices can be scheduled to transmit during differing time slots; however, it is also contemplated that a static scheme can be employed. Pursuant to an illustration, an interference budget can be combined with a time varying weighting factor associated with a base station; the weighting factor can be predefined and/or adaptively adjusted (e.g., based upon a load balancing mechanism). Moreover, the weighted interference budget can be leveraged for selecting mobile devices for uplink transmission (e.g., based at least in part upon path loss ratios of the mobile devices). Further, disparate interference budgets can be utilized by differing channels of a sector at a particular time. Also, for example, a base station can assign a loading factor to be utilized by wireless terminal(s) for generating channel quality report(s).

Abstract translation: 描述了有助于调度上行链路传输的系统和方法。 例如，可以利用时间共享方案，使得不同的移动设备可以被调度为在不同时隙期间进行传输; 然而，也可以考虑采用静态方案。 根据图示，可以将干扰预算与与基站相关联的时变加权因子组合; 加权因子可以被预先定义和/或自适应地调整（例如，基于负载均衡机制）。 此外，加权干扰预算可以用于选择用于上行链路传输的移动设备（例如，至少部分地基于移动设备的路径损耗比率）。 此外，不同的干扰预算可以在特定时间由扇区的不同信道来利用。 此外，例如，基站可以分配要由无线终端利用以产生信道质量报告的负载因子。

公开(公告)号：US08315662B2

公开(公告)日：2012-11-20

申请号：US13034940

申请日：2011-02-25

Applicant: Pablo Alejandro Anigstein ,  Prashanth Hande ,  Junyi Li

Inventor： Pablo Alejandro Anigstein ,  Prashanth Hande ,  Junyi Li

IPC: H04B7/00

CPC classification number: H04W52/281 ,  H04L27/2601 ,  H04W52/16 ,  H04W52/42 ,  H04W52/46

Abstract: Systems and methodologies are described that facilitate controlling transmission power of a wireless terminal. A downlink power control channel segment may include an Orthogonal Frequency Division Multiplexing (OFDM) tone-symbol that may comprise a first component and a second component. The first component may be an in-phase (I) component and the second component may be a quadrature (Q) component, for example. A power command may be transmitted in the first component. Further, information associated with a wireless terminal may be transmitted in the second component. The information associated with the wireless terminal may be, for instance, a portion of a scrambling mask associated with the wireless terminal.

Abstract translation: 描述了便于控制无线终端的传输功率的系统和方法。 下行链路功率控制信道段可以包括可以包括第一分量和第二分量的正交频分复用（OFDM）音调符号。 第一分量可以是同相（I）分量，并且第二分量可以是例如正交（Q）分量。 可以在第一组件中发送功率命令。 此外，可以在第二组件中发送与无线终端相关联的信息。 与无线终端相关联的信息可以是例如与无线终端相关联的加扰掩码的一部分。

公开(公告)号：US08285283B2

公开(公告)日：2012-10-09

申请号：US12049150

申请日：2008-03-14

Applicant: Prashanth Hande ,  Pablo Alejandro Anigstein ,  Shailesh Patil ,  Yunus Hussain ,  Hyung G. Myung

Inventor： Prashanth Hande ,  Pablo Alejandro Anigstein ,  Shailesh Patil ,  Yunus Hussain ,  Hyung G. Myung

IPC: H04W36/00 ,  H04W40/00

CPC classification number: H04W36/22 ,  H04W36/30 ,  H04W36/36

Abstract: Method and apparatus for an access terminal which makes handoff decisions between a number of potential alternative attachment points based on service level indicating metrics are described. The access terminal computes a service level indicating metric differently for a current connection than for a potential alternative connection. A service level indicating metric is a function of loading information and received signal strength. A selection may be made by selecting between attachment points by selecting the attachment point having the highest service level indicating metric from among a plurality of attachment points, one per possible carrier where the attachment point which is considered for a given carrier is the one having the best connection for the given carrier. The access terminal handoff decision approach provides handoff decisions which are nearly as optimal as those which can be achieved using a centralized control node but without the requirement for centralized handoff decisions.

Abstract translation: 描述了一种接入终端的方法和装置，其基于服务水平指示量度在多个潜在替代附接点之间进行切换决策。 访问终端针对当前连接计算指示度量的服务级别，而不是潜在的备选连接。 服务级别指示度量是加载信息和接收信号强度的函数。 可以通过从多个附接点中选择具有最高服务级别指示度量的附接点来选择附件点，每个可能的载体一个，对于给定载体考虑的附着点是具有 给定运营商的最佳连接。 接入终端越区切换决策方法提供了切换决策，这些决定几乎与使用集中式控制节点可以实现但不需要集中切换决策一样优先。

公开(公告)号：US20120147936A1

公开(公告)日：2012-06-14

申请号：US12963910

申请日：2010-12-09

Applicant: Sundeep Rangan ,  Prashanth Hande ,  Niranjan N. Ratnakar ,  Ozge Koymen ,  Ritesh K. Madan ,  Atul Maharshi ,  Subhadeep P. Roy ,  Siddharth Ray

Inventor： Sundeep Rangan ,  Prashanth Hande ,  Niranjan N. Ratnakar ,  Ozge Koymen ,  Ritesh K. Madan ,  Atul Maharshi ,  Subhadeep P. Roy ,  Siddharth Ray

IPC: G06F15/16 ,  H04B1/38

CPC classification number: H04L1/1877 ,  H04L1/188

Abstract: The apparatus and methods described herein are used to provide data between an application and a modem. One method includes providing data in application data units from the application to the modem, transmitting the data from the modem to a receiver, and reporting by the modem to the application, whether each application data unit has been successfully transmitted from the modem to the receiver.

Abstract translation: 本文描述的装置和方法用于在应用和调制解调器之间提供数据。 一种方法包括将应用数据单元中的数据从应用程序提供给调制解调器，将数据从调制解调器发送到接收机，并由调制解调器向应用程序报告，每个应用数据单元是否已经成功地从调制解调器发送到接收机 。