公开(公告)号：US08879532B2

公开(公告)日：2014-11-04

申请号：US12722425

申请日：2010-03-11

Applicant: Jiann-An Tsai ,  Zhouyue Pi ,  Kaushik Josiam ,  Farooq Khan ,  Sudhir Ramakrishna

Inventor： Jiann-An Tsai ,  Zhouyue Pi ,  Kaushik Josiam ,  Farooq Khan ,  Sudhir Ramakrishna

IPC: H04L1/00 ,  H04L25/02 ,  H04L5/00

CPC classification number: H04L5/0051 ,  H04L1/1819 ,  H04L5/0007 ,  H04L5/005 ,  H04L5/0073 ,  H04L25/0224

Abstract: A method and base station apparatus for transmitting pilot data in a wireless communication system, and a method and mobile station apparatus for receiving pilot data in a wireless communication system are provided. The method for transmitting pilot data in a wireless communication system includes determining a pilot pattern in at least one resource block for each of one or more pilot streams, and transmitting the one or more pilot streams based on the determined respective pilot pattern in the at least one resource block, wherein the at least one resource block comprises a plurality of subcarriers and a plurality of Orthogonal Frequency Division Multiplexing (OFDM) symbols.

Abstract translation: 一种用于在无线通信系统中发送导频数据的方法和基站装置，以及用于在无线通信系统中接收导频数据的方法和移动站装置。 用于在无线通信系统中发送导频数据的方法包括：针对一个或多个导频流中的每一个确定至少一个资源块中的导频模式，以及至少基于所确定的相应导频模式来发送所述一个或多个导频流 一个资源块，其中所述至少一个资源块包括多个子载波和多个正交频分复用（OFDM）符号。

公开(公告)号：US08861528B2

公开(公告)日：2014-10-14

申请号：US12848433

申请日：2010-08-02

Applicant: Kaushik Josiam ,  Qi Wu ,  Heewon Kang ,  Sudhir Ramakrishna ,  TaeYoung Kim

Inventor： Kaushik Josiam ,  Qi Wu ,  Heewon Kang ,  Sudhir Ramakrishna ,  TaeYoung Kim

IPC: H04L12/28 ,  H04L12/56 ,  H04J3/00 ,  H04W72/00

CPC classification number: H04W72/02 ,  H04W28/18 ,  H04W72/00 ,  H04W88/08

Abstract: A base station for use in a wireless network that communicates with mobile stations according to the IEEE 802.16m standard. The base station transmits unicast data and E-MBS data in the downlink to mobile stations using physical resource units (PRUs) that are partitioned into a plurality of frequency partitions. The base station transmits E-MBS data using a first set of PRUs in at least a first common frequency partition, wherein the first set of PRUs are also used by at least a second base station to transmit E-MBS data. The base station further transmits unicast data using a second set of PRUs, wherein the second set of PRUs are randomized with respect to PRUs used by the at least a second base station to transmit unicast data.

Abstract translation: 一种用于根据IEEE 802.16m标准与移动台进行通信的无线网络中的基站。 基站使用被划分为多个频率分区的物理资源单元（PRU）将下行链路中的单播数据和E-MBS数据发送到移动台。 基站在至少第一公共频率分区中使用第一组PRU发送E-MBS数据，其中第一组PRU也由至少第二基站用于发送E-MBS数据。 基站使用第二组PRU进一步发送单播数据，其中第二组PRU相对于由至少第二基站使用的PRU进行随机化以发送单播数据。

公开(公告)号：US20120178464A1

公开(公告)日：2012-07-12

申请号：US13344482

申请日：2012-01-05

Applicant: Ying Li ,  Kaushik Josiam ,  Sudhir Ramakrishna

Inventor： Ying Li ,  Kaushik Josiam ,  Sudhir Ramakrishna

IPC: H04B15/00 ,  H04W72/04

CPC classification number: H04W72/02 ,  H04W4/70 ,  H04W24/10 ,  H04W48/16

Abstract: For use in a machine device, a method to support machine-to-machine communications over a network includes acquiring system information from the network. The method also includes determining a ranging channel during a ranging back-off window. The method further includes performing ranging based on the determined ranging channel. The method still further includes communicating over the network. The ranging channel is determined according to a ranging priority of the machine device.

Abstract translation: 为了在机器设备中使用，支持通过网络进行机对机通信的方法包括从网络获取系统信息。 该方法还包括在测距退避窗口期间确定测距信道。 该方法还包括基于所确定的测距信道来执行测距。 该方法还包括通过网络通信。 测距信道根据机器设备的测距优先级来确定。

公开(公告)号：US20110170480A1

公开(公告)日：2011-07-14

申请号：US12951952

申请日：2010-11-22

Applicant: Zhouyue Pi ,  Sudhir Ramakrishna ,  Kaushik Josiam

Inventor： Zhouyue Pi ,  Sudhir Ramakrishna ,  Kaushik Josiam

IPC: H04W4/00

CPC classification number: H04W48/12 ,  H04L1/0041 ,  H04L1/0061 ,  H04W88/08 ,  H04W92/10

Abstract: A base station is provided. The base station includes a transmit path circuitry that generates a masking sequence to mask a cyclic redundancy check of a control channel information element. The masking sequence includes a 4-bit prefix. The three least significant bits of the 4-bit prefix indicate a message type of the control channel information element. A subscriber station is also provided. The subscriber station includes a receive path circuitry that determines a message type of a control channel information element using a three least significant bits of a 4-bit prefix of a masking sequence used to mask a cyclic redundancy check of the control channel information element.

Abstract translation: 提供基站。 基站包括产生屏蔽序列以掩蔽控制信道信息元素的循环冗余校验的发送路径电路。 屏蔽序列包括4位前缀。 4位前缀的三个最低有效位表示控制信道信息元素的消息类型。 还提供了一个用户台。 用户站包括接收路径电路，其使用用于屏蔽控制信道信息元素的循环冗余校验的屏蔽序列的4比特前缀的三个最低有效位来确定控制信道信息元素的消息类型。

公开(公告)号：US20110053627A1

公开(公告)日：2011-03-03

申请号：US12855533

申请日：2010-08-12

Applicant: Sudhir Ramakrishna

Inventor： Sudhir Ramakrishna

IPC: H04W72/04 ,  H04B7/00

CPC classification number: H04W72/044 ,  H04L5/0007 ,  H04W72/0453

Abstract: A resource allocation message includes a resource allocation field. The resource allocation field includes a first field that includes either a first sub-field or a first sub-field and a second sub-field with the first sub-field configured to hold a first value that indicates two or more logical indices and the second sub-field configured to hold a third value. Each of the logical indices is associated with a sub-band pair of resource units. The sub-band pair of resource units includes either a first sub-band resource unit or a first sub-band resource unit and a second sub-band resource unit. The resource allocation field also includes a second field configured to hold a second value that indicates, either alone or in combination with the third value, a first sub-band resource unit or a second sub-band resource unit for each of the sub-band pair of resource units indicated by the first field.

Abstract translation: 资源分配消息包括资源分配字段。 资源分配字段包括第一字段，其包括第一子字段或第一子字段和第二子字段，其中第一子字段被配置为保存指示两个或更多个逻辑索引的第一值， 子字段配置为保存第三个值。 每个逻辑索引与资源单元的子带对相关联。 子带对资源单元包括第一子带资源单元或第一子带资源单元和第二子带资源单元。 资源分配字段还包括被配置为保存第二值的第二字段，该第二值单独地或与第三值组合指示用于每个子带的第一子带资源单元或第二子带资源单元 由第一个字段指示的资源单元对。

公开(公告)号：US07869416B2

公开(公告)日：2011-01-11

申请号：US11070437

申请日：2005-03-02

Applicant: Sudhir Ramakrishna ,  Ashok N. Rudrapatna

Inventor： Sudhir Ramakrishna ,  Ashok N. Rudrapatna

IPC: H04J3/00 ,  H04B7/216

CPC classification number: H04B1/707 ,  H04B7/0632 ,  H04B2201/70701 ,  H04L1/0002

Abstract: A method enables the use of a secondary pilot signal and a secondary antenna(s) in the forward link of a CDMA-based cellular network employing a slotted transmission scheme with a time-multiplexed primary pilot signal, with backwards compatibility. The forward link is divided into a number of time slots. For communications with “legacy” mobile stations that expect transmissions from a single, primary antenna (and that expect a single, primary pilot signal), during some of the time slots, only the primary antenna is used for transmissions, including transmitting the primary pilot signal. Neither the secondary pilot channel nor any other signals from the secondary antenna are transmitted. During the remaining time slots: (i) the primary pilot signal is transmitted from the primary antenna, and the secondary pilot signal is transmitted from the secondary antenna, but at different times; and (ii) data meant for the legacy mobile stations is not transmitted.

Abstract translation: 一种方法使得能够使用具有后向兼容性的采用具有时间复用的主导频信号的时隙传输方案的基于CDMA的蜂窝网络的前向链路中的次级导频信号和次级天线。 前向链路分为多个时隙。 为了与期望来自单个主要天线（并且期望单个主要导频信号）的传输的“传统”移动站的通信，在一些时隙期间，仅将主天线用于传输，包括传送主导频 信号。 二次导频信道也不发送来自次天线的任何其它信号。 在剩下的时隙中：（i）主导频信号从主天线发射，次导频信号从次天线发射，但在不同时间发射; 并且（ii）不传输用于传统移动台的数据。

公开(公告)号：US20100272041A1

公开(公告)日：2010-10-28

申请号：US12749367

申请日：2010-03-29

Applicant: Sudhir Ramakrishna

Inventor： Sudhir Ramakrishna

IPC: H04W72/04

CPC classification number: H04L1/0038 ,  H04L5/0046

Abstract: A base station comprising a transmitter configured to transmit a downlink frame. The downlink frame comprises a resource allocation region, and the resource allocation region comprises a set of resource allocation messages comprising at least one resource allocation message. All or a subset of the resource allocation messages each comprise one or more fields with an indicator, interpreted from a particular field or a combination of some or all of the one or more fields, to indicate a number of resource allocation messages intended for a particular subscriber station in the resource allocation region.

Abstract translation: 一种基站，包括被配置为发送下行链路帧的发射机。 所述下行链路帧包括资源分配区域，所述资源分配区域包括包含至少一个资源分配消息的一组资源分配消息。 每个资源分配消息的全部或一个子集包括具有指示符的一个或多个字段，从指定的一个或多个字段的特定字段或某些或所有字段的组合中解释，以指示用于特定的资源分配消息的数量 用户站在资源分配区域。

公开(公告)号：US07499439B2

公开(公告)日：2009-03-03

申请号：US11145559

申请日：2005-06-03

Applicant: Shupeng Li ,  Sudhir Ramakrishna ,  Ashok N. Rudrapatna

Inventor： Shupeng Li ,  Sudhir Ramakrishna ,  Ashok N. Rudrapatna

IPC: H04Q7/24

CPC classification number: H04B7/264 ,  H04L47/14 ,  H04L47/25 ,  H04L47/29 ,  H04W28/22

Abstract: A method is provided for controlling communications between a base station and a mobile device. The method comprises transmitting a pilot signal having at least one transmitted characteristic over a channel. A data rate control signal is received, indicating a variation between the transmitted characteristic and a corresponding actual characteristic of the pilot signal received at a remote location. The data rate control signal is modified based on a coefficient related to the bandwidth of the channel, and a transmission rate is determined based on the modified data rate control signal.

Abstract translation: 提供了一种用于控制基站和移动设备之间的通信的方法。 该方法包括通过信道发送具有至少一个传输特性的导频信号。 接收数据速率控制信号，指示传输特性与在远程位置接收的导频信号的对应实际特性之间的变化。 数据速率控制信号根据与信道的带宽相关的系数进行修改，并且基于修改的数据速率控制信号来确定传输速率。

公开(公告)号：US20070293171A1

公开(公告)日：2007-12-20

申请号：US11424352

申请日：2006-06-15

Applicant: Shupeng Li ,  Shirish Nagaraj ,  Sudhir Ramakrishna ,  Ashok N. Rudrapatna

Inventor： Shupeng Li ,  Shirish Nagaraj ,  Sudhir Ramakrishna ,  Ashok N. Rudrapatna

IPC: H04B1/18

CPC classification number: H04W72/0413

Abstract: A method and an apparatus for wireless communication between a receiver and a transmitter in a cellular system are provided. The method comprises associating a channel of known structure at the transmitter with the transmission of a first control channel to indicate a variable structure of the first control channel to the receiver.

Abstract translation: 提供了一种在蜂窝系统中的接收机与发射机之间进行无线通信的方法和装置。 该方法包括将发射机处的已知结构的信道与第一控制信道的传输相关联，以指示到接收机的第一控制信道的可变结构。

公开(公告)号：US20070091837A1

公开(公告)日：2007-04-26

申请号：US11256626

申请日：2005-10-21

Applicant: Shupeng Li ,  Sudhir Ramakrishna ,  Ashok Rudrapatna

Inventor： Shupeng Li ,  Sudhir Ramakrishna ,  Ashok Rudrapatna

IPC: H04Q7/00

CPC classification number: H04W72/14 ,  H04W72/042 ,  H04W72/1268

Abstract: The present invention provides a method and an apparatus for wireless communication between a base station and at least two mobile stations in a cellular system. The method comprises sending on a forward link at least one of a first and a second command to the at least two mobile stations that the base station is serving on a reverse link. The method further comprises controlling a transmission in at least one of a first and a second transmission mode of at least one mobile station among the at least two mobile stations on the reverse link based on the at least one of the first and second commands. Each of at least two mobile stations may determine a change of transmission mode between an orthogonal or a non-orthogonal transmission mode on a reverse link based on a message on a forward link. A scheduler at a serving base station may match scheduling or transmission resources to the transmissions on the reverse link. The mobile stations being served may use orthogonal and non-orthogonal transmission modes for the transmissions in a non-overlapping fashion in any combination of time, frequency and spatial domains. By selectively assigning a set of mobile stations to the orthogonal or non-orthogonal modes of transmission, the serving base station may enable fairness across the mobile stations.

Abstract translation: 本发明提供一种用于蜂窝系统中的基站与至少两个移动台之间的无线通信的方法和装置。 所述方法包括：在正向链路上发送第一和第二命令中的至少一个到基站在反向链路上服务的至少两个移动站。 该方法还包括基于第一和第二命令中的至少一个来控​​制反向链路上的至少两个移动站中的至少一个移动站的第一和第二传输模式中的至少一个传输。 至少两个移动站中的每一个可以基于前向链路上的消息来确定反向链路上的正交或非正交传输模式之间的传输模式的改变。 服务基站处的调度器可以将调度或传输资源与反向链路上的传输相匹配。 被服务的移动站可以以时间，频率和空间域的任何组合的非重叠方式使用正交和非正交传输模式用于传输。 通过选择性地将一组移动站分配给正交或非正交传输模式，服务基站可以实现跨越移动台的公平性。