公开(公告)号：US08160007B2

公开(公告)日：2012-04-17

申请号：US11943512

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: H04W4/00

CPC classification number: H04W72/085 ,  H04W72/0406

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：US08036151B2

公开(公告)日：2011-10-11

申请号：US11611882

申请日：2006-12-17

Applicant: Arnab Das ,  Prashanth Hande ,  Sundeep Rangan ,  Xinzhou Wu ,  Juergen Cezanne

Inventor： Arnab Das ,  Prashanth Hande ,  Sundeep Rangan ,  Xinzhou Wu ,  Juergen Cezanne

IPC: G08C17/00

CPC classification number: H04L1/0015 ,  H04L1/0002 ,  H04L1/0033 ,  H04W52/146 ,  H04W52/242 ,  H04W52/243 ,  H04W52/367

Abstract: Systems and methodologies are described that facilitate utilizing power-based rate signaling for uplink scheduling in a wireless communications system. A maximum nominal power (e.g., relative maximum transmit power that may be employed on an uplink) may be known to both a base station and a mobile device. For example, the base station and the mobile device may agree upon a maximum nominal power. According to another example, signaling related to a maximum nominal power for utilization on the uplink may be provided over a downlink. Further, selection of a code rate, modulation scheme, and the like for the uplink may be effectuated by a mobile device as a function of the maximum nominal power. Moreover, such selection may be based at least in part upon an interference cost, which may be evaluated by the mobile device.

Abstract translation: 描述了有助于在无线通信系统中利用基于功率的速率信令用于上行链路调度的系统和方法。 基站和移动设备可以知道最大额定功率（例如，可以在上行链路上采用的相对最大发射功率）。 例如，基站和移动设备可以达成最大额定功率。 根据另一示例，可以在下行链路上提供与在上行链路上的最大标称功率有关的信令。 此外，用于上行链路的码率，调制方案等的选择可以由移动设备作为最大额定功率的函数来实现。 此外，这样的选择可以至少部分地基于可由移动设备评估的干扰成本。

公开(公告)号：US20100041355A1

公开(公告)日：2010-02-18

申请号：US12606079

申请日：2009-10-26

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

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

IPC: H04B1/04

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：US20090257351A1

公开(公告)日：2009-10-15

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: H04L12/24

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：US20090129345A1

公开(公告)日：2009-05-21

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: H04Q7/20

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：US20090129331A1

公开(公告)日：2009-05-21

申请号：US11943489

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: H04Q7/00 ,  H04Q7/20

CPC classification number: H04W72/082 ,  H04W72/0406 ,  H04W72/12

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).

公开(公告)号：US20080013468A1

公开(公告)日：2008-01-17

申请号：US11487225

申请日：2006-07-14

Applicant: Pablo Anigstein ,  Prashanth Hande ,  Junyi Li

Inventor： Pablo Anigstein ,  Prashanth Hande ,  Junyi Li

IPC: H04J11/00

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：US20070253355A1

公开(公告)日：2007-11-01

申请号：US11549604

申请日：2006-10-13

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

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

IPC: H04Q7/00

CPC classification number: H04W16/08 ,  H04B17/24 ,  H04B17/382 ,  H04W4/06 ,  H04W16/06 ,  H04W24/10 ,  H04W36/20 ,  H04W52/143 ,  H04W52/343 ,  H04W52/40 ,  H04W72/082

Abstract: Methods and apparatus are described where loading information regarding loading conditions at a neighboring base station is received at a first base station and then communicated, e.g., broadcast, by the first base station to mobiles within the cell in which the first base station is located. Since the neighbor base station's loading information is being communicated to a mobile currently connected to the first base station via a reliable communications channel of the first base station, the mobile can be expected to be able to reliably recover loading factor information corresponding to not only the first base station but to the neighboring base station. By utilizing such loading factor information, the mobile can generate an improved uplink interference report. The first base station receives such interference reports from wireless terminals in its cell, facilitating efficient resource allocation and interference control.

Abstract translation: 描述了在第一基站处接收关于相邻基站处的负载条件的信息的装置，然后由第一基站传送（例如，广播）到第一基站所在的小区内的移动台。 由于相邻基站的载入信息通过第一基站的可靠通信信道被传送到当前连接到第一基站的移动台，所以可以期望移动台能够可靠地恢复与不仅仅是 第一个基站，但是到邻近的基站。 通过利用这种负载因子信息，移动台可以产生改进的上行链路干扰报告。 第一基站从其小区中的无线终端接收到这种干扰报告，有利于高效的资源分配和干扰控制。

公开(公告)号：US20070242764A1

公开(公告)日：2007-10-18

申请号：US11486609

申请日：2006-07-14

Applicant: Pablo Anigstein ,  Prashanth Hande ,  Junyi Li ,  Rajiv Laroia ,  Sathyadev Venkata Uppala

Inventor： Pablo Anigstein ,  Prashanth Hande ,  Junyi Li ,  Rajiv Laroia ,  Sathyadev Venkata Uppala

IPC: H04K1/10

CPC classification number: H04L27/2602 ,  H04L5/0007 ,  H04L27/2655

Abstract: User specific modulation-symbol scrambling is implemented for various uplink segments, e.g., uplink traffic acknowledgement channel (ULTACH), uplink state request channel (ULSRCH), and uplink dedicated control channel (ULDCCH) segments. A wireless terminal is assigned a wireless terminal scrambling identifier. A set of ordered input modulation symbols are determined for an uplink dedicated segment to which user specific scrambling is to be applied. One bit of the assigned wireless terminal scrambling identifier is associated with each of the ordered input modulation symbols of a segment in accordance with a predetermined mapping. For each input modulation symbol a scrambling operation, e.g., a phase rotation of the input modulation symbol, is performed as a function of the associated user specific scrambling identifier bit to obtain a corresponding output modulation symbol. A value of (0,1) for a scrambling ID bit is associated with a (first, second) amount of phase rotation, e.g., (0, 180) degrees, respectively.

Abstract translation: 针对各种上行链路段（例如，上行链路业务确认信道（ULTACH），上行链路状态请求信道（ULSRCH）和上行链路专用控制信道（ULDCCH））段实现用户特定的调制符号加扰。 无线终端被分配无线终端扰乱标识符。 针对要应用用户特定加扰的上行链路专用段确定一组有序输入调制符号。 所分配的无线终端扰乱标识符的一个比特根据预定的映射与段的每个有序输入调制符号相关联。 对于每个输入调制符号，作为输入调制符号的相位旋转的加扰操作被执行为相关联的用户特定加扰标识符位的函数，以获得相应的输出调制符号。 加扰ID位的（0,1）的值分别与（第一，第二）相位旋转量相关联，例如（0,180）度。

公开(公告)号：US20070140168A1

公开(公告)日：2007-06-21

申请号：US11486714

申请日：2006-07-14

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

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

IPC: H04Q7/00 ,  H04B7/216

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。