公开(公告)号：US20150163763A1

公开(公告)日：2015-06-11

申请号：US14403614

申请日：2012-05-30

Applicant: Havish Koorapaty ,  Pål Frenger ,  Jiann-Ching Guey

Inventor： Havish Koorapaty ,  Pål Frenger ,  Jiann-Ching Guey

IPC: H04W60/04 ,  H04W48/14

CPC classification number: H04W60/04 ,  H04W24/02 ,  H04W48/14 ,  H04W48/20 ,  H04W88/10 ,  H04W88/12 ,  H04W92/20

Abstract: The disclosure relates to a method (30) performed in second network node (71, . . . , 7n) of a communication system (1, 1′) adapted for wireless communication and comprising a first network node (31, 32) adapted to operate in a mode of operation according to a first communication standard and a user device (10) adapted to operate according to the first communication standard. The second network node (71, . . . , 7n) is adapted to operate in a mode of operation according to a second communication standard, and adapted to receive uplink signaling in accordance with the first communication standard. The method (30) comprises receiving (31) an access request from the user device (10) in accordance with the first communication standard, and enabling (32) a communication channel for the user device (10) by relaying the received access request to the first network node (31, 32) or by switching from the mode of operation according to the second communication standard, to a mode of operation according to the first communication standard.

Abstract translation: 本公开涉及在适于无线通信的通信系统（1,1'）的第二网络节点（71，...，7n）中执行的方法（30），包括：第一网络节点（31,32） 以根据第一通信标准的操作模式和适于根据第一通信标准进行操作的用户设备（10）进行操作。 第二网络节点（71，...，7n）适于根据第二通信标准在操作模式下操作，并且适于根据第一通信标准接收上行链路信令。 方法（30）包括根据第一通信标准接收（31）来自用户设备（10）的接入请求，并且通过将接收到的接入请求中继到（32）用户设备（10）的通信信道 第一网络节点（31,32）或者根据第二通信标准从操作模式切换到根据第一通信标准的操作模式。

公开(公告)号：US09485754B2

公开(公告)日：2016-11-01

申请号：US14399460

申请日：2012-05-28

Applicant: Pål Frenger ,  Jiann-Ching Guey ,  Havish Koorapaty

Inventor： Pål Frenger ,  Jiann-Ching Guey ,  Havish Koorapaty

IPC: H04W72/04 ,  H04W72/12 ,  H04W4/06 ,  H04L12/18

CPC classification number: H04W72/04 ,  H04L12/189 ,  H04W4/06 ,  H04W72/1215

Abstract: The disclosure relates to a network node 21, 2n; 31, 3n of a communication system 1 for wireless communication. The network node 21, 2n; 31, 3n is configured to utilize a first bandwidth, B1, allocated in accordance with a first communication standard, wherein a first carrier and a second carrier are allocated within the first bandwidth B1. The first carrier has a first bandwidth, Blegacy, and is configured to operate in accordance with a transmission format of the first communication standard, and the second carrier has a second bandwidth, Bnon-lebacy, and is configured to operate in accordance with a transmission format of a second communication standard.

Abstract translation: 本公开涉及网络节点21,2n; 31，3n，用于无线通信。 网络节点21,2n; 31，3n被配置为利用根据第一通信标准分配的第一带宽B1，其中在第一带宽B1内分配第一载波和第二载波。 第一载波具有第一带宽Blegacy，并且被配置为根据第一通信标准的传输格式进行操作，并且第二载波具有第二带宽Bnon-lebacy，并且被配置为根据传输 第二通信标准的格式。

公开(公告)号：US20150092653A1

公开(公告)日：2015-04-02

申请号：US14399460

申请日：2012-05-28

Applicant: Pål Frenger ,  Jiann-Ching Guey ,  Havish Koorapaty

Inventor： Pål Frenger ,  Jiann-Ching Guey ,  Havish Koorapaty

IPC: H04W72/04 ,  H04W4/06

CPC classification number: H04W72/04 ,  H04L12/189 ,  H04W4/06 ,  H04W72/1215

Abstract: The disclosure relates to a network node 21,, 2n; 31,, 3n of a communication system 1 for wireless communication. The network node 21,, 2n; 31,, 3n is configured to utilize a first bandwidth, B1, allocated in accordance with a first communication standard, wherein a first carrier and a second carrier are allocated within the first bandwidth B1. The first carrier has a first bandwidth, and is configured to operate in accordance with a transmission format of the first communication standard, and the second carrier has a second bandwidth, Bnon-lebacy, and is configured to operate in accordance with a transmission format of a second communication standard.

Abstract translation: 本公开涉及网络节点21 ,, 2n; 31，3n，用于无线通信。 网络节点21 ,, 2n; 31 n 3被配置为利用根据第一通信标准分配的第一带宽B1，其中在第一带宽B1内分配第一载波和第二载波。 第一载波具有第一带宽，并且被配置为根据第一通信标准的传输格式进行操作，并且第二载波具有第二带宽Bnon-lebacy，并且被配置为根据传输格式 第二个沟通标准。

公开(公告)号：US08554235B2

公开(公告)日：2013-10-08

申请号：US12944204

申请日：2010-11-11

Applicant: Jiann-Ching Guey ,  Havish Koorapaty

Inventor： Jiann-Ching Guey ,  Havish Koorapaty

IPC: H04W40/00 ,  H04W72/00

CPC classification number: H04W72/121 ,  H04W72/1289

Abstract: An apparatus (20) is associated with a telecommunications node (N) which serves a service area (S) which belongs to one set of plural sets of service areas comprising a network. The apparatus (20) divides a time resource for the node into plural phases in coordinated manner with other service areas. The apparatus (20) further generates a schedule for transmission/reception of user traffic for wireless terminals served by the node for plural consecutive phases. The schedule is generated so that during the plural consecutive phases the node can transmit and receive scheduled user traffic before receiving in the plural consecutive phases scheduling information from another node which serves another set of service areas.

Abstract translation: 设备（20）与电信节点（N）相关联，该电信节点（N）服务于属于包括网络的多组服务区域的一组服务区域（S）。 设备（20）以与其他服务区域协调的方式将节点的时间资源划分为多个阶段。 该装置（20）进一步生成用于多个连续相位的节点所服务的无线终端的用户业务的发送/接收的调度。 生成调度，使得在多个连续阶段期间，节点可以在从多个连续相位接收调度信息之前发送和接收调度的用户业务，该另一节点服务另一组服务区域。

公开(公告)号：US20130089065A1

公开(公告)日：2013-04-11

申请号：US13470445

申请日：2012-05-14

Applicant: Havish Koorapaty ,  Jung-Fu Cheng ,  Mattias Frenne ,  Jiann-Ching Guey ,  Daniel Larsson

Inventor： Havish Koorapaty ,  Jung-Fu Cheng ,  Mattias Frenne ,  Jiann-Ching Guey ,  Daniel Larsson

IPC: H04W56/00 ,  H04J11/00 ,  H04J3/00 ,  H04W72/04

CPC classification number: H04W56/002 ,  H04J11/00 ,  H04J2011/0096 ,  H04L5/0023 ,  H04L5/0057 ,  H04L5/0094 ,  H04L27/2662 ,  H04W56/001 ,  H04W56/0035 ,  H04W72/044

Abstract: The scheduling flexibility of CSI reference signals enables time and frequency synchronization using multiple non-zero CSI-RSs transmitted in the same subframe, or using CSI-RSs transmitted in the same subframe with other synchronization signals. Also, multiple synchronization signals may be scheduled in the same subframe to enable fine time and frequency synchronization without cell-specific reference signals.

Abstract translation: CSI参考信号的调度灵活性使得能够使用在相同子帧中发送的多个非零CSI-RS或使用在同一子帧中与其他同步信号发送的CSI-RS进行时间和频率同步。 此外，可以在同一子帧中调度多个同步信号，以实现无小区特定参考信号的精细时间和频率同步。

公开(公告)号：US20120307818A1

公开(公告)日：2012-12-06

申请号：US13588687

申请日：2012-08-17

Applicant: Jiann-Ching Guey ,  Havish Koorapaty

Inventor： Jiann-Ching Guey ,  Havish Koorapaty

IPC: H04W4/00

CPC classification number: H04L27/2607

Abstract: Transmitted signals are modified to facilitate the emulation of circular convolution in non-contiguous transmission environments. These modified signals may be derived from well-known signature sequences. In an exemplary method, a tail portion of a final segment of a base signal is prefixed to an initial segment of the base signal, to form a first transmit segment. One or more additional transmit segments are formed by prefixing, to each of the one or more segments of the base signal other than the initial segment, a tail portion of the immediately preceding segment of the base signal. The transmit segments so formed are transmitted in respective ones of the plurality of non-contiguous transmit-time intervals. Corresponding methods for receiving the transmitted segments and reconstructing the base signal are also described, as are corresponding transmitting and receiving apparatuses.

Abstract translation: 传输的信号被修改以便于在非连续传输环境中仿真循环卷积。 这些修改的信号可以从公知的签名序列导出。 在一个示例性方法中，将基本信号的最后一段的尾部前缀到基本信号的初始段，以形成第一传输段。 一个或多个附加的传输段通过对除了初始段之外的基本信号的一个或多个段中的每一个前缀，形成基本信号的紧邻在前的段的尾部。 如此形成的发送段在多个不连续发送时间间隔的相应的一个中发送。 还描述了用于接收发送的段和重建基本信号的相应方法，以及对应的发送和接收设备。

公开(公告)号：US20110280181A1

公开(公告)日：2011-11-17

申请号：US12781229

申请日：2010-05-17

Applicant: Jiann-Ching Guey ,  Havish Koorapaty

Inventor： Jiann-Ching Guey ,  Havish Koorapaty

IPC: H04W40/00

CPC classification number: H04L27/2607

Abstract: Transmitted signals are modified to facilitate the emulation of circular convolution in non-contiguous transmission environments. These modified signals may be derived from well-known signature sequences. In an exemplary method, a tail portion of a final segment of a base signal is prefixed to an initial segment of the base signal, to form a first transmit segment. One or more additional transmit segments are formed by prefixing, to each of the one or more segments of the base signal other than the initial segment, a tail portion of the immediately preceding segment of the base signal. The transmit segments so formed are transmitted in respective ones of the plurality of non-contiguous transmit-time intervals. Corresponding methods for receiving the transmitted segments and reconstructing the base signal are also described, as are corresponding transmitting and receiving apparatuses.

Abstract translation: 传输的信号被修改以便于在非连续传输环境中仿真循环卷积。 这些修改的信号可以从公知的签名序列导出。 在一个示例性方法中，将基本信号的最后一段的尾部前缀到基本信号的初始段，以形成第一传输段。 一个或多个附加的传输段通过对除了初始段之外的基本信号的一个或多个段中的每一个前缀，形成基本信号的紧邻在前的段的尾部。 如此形成的发送段在多个不连续发送时间间隔的相应的一个中发送。 还描述了用于接收发送的段和重建基本信号的相应方法，以及对应的发送和接收设备。

公开(公告)号：US20090285173A1

公开(公告)日：2009-11-19

申请号：US12420404

申请日：2009-04-08

Applicant: Havish Koorapaty ,  Jiann-Ching Guey ,  Kumar Balachandran ,  Rajaram Ramesh

Inventor： Havish Koorapaty ,  Jiann-Ching Guey ,  Kumar Balachandran ,  Rajaram Ramesh

IPC: H04W72/04

CPC classification number: H04L5/0048 ,  H04L5/0007 ,  H04L5/005 ,  H04L5/0051 ,  H04L27/2613 ,  H04W72/0446

Abstract: A multi-pilot frame handler (36) of a radio access network node (28) is arranged to prepare a block of a frame of information to include a first pilot signal of a pilot signal first type and a first pilot signal of a pilot signal second type. The pilot signal of the pilot signal first type is expressed as a first Costas array base pattern of resource elements of the block; the pilot signal of the second type is expressed as a second Costas array base pattern of resource elements of the block. The multi-pilot frame handler (36) is arranged to prepare the block so that any pilot signal of the pilot signal first type is carried by at least some subcarriers of a first set of subcarriers of the block and any pilot signal of the pilot signal second type is carried by at least some subcarriers of a second set of subcarriers of the block.

Abstract translation: 布置无线电接入网络节点（28）的多导频帧处理器（36）以准备信息帧的块，以包括导频信号第一类型的第一导频信号和导频信号的第一导频信号 第二种。 导频信号第一类型的导频信号被表示为块的资源元素的第一个科斯塔斯阵列基本模式; 第二类型的导频信号被表示为块的资源元素的第二个科斯塔斯阵列基本模式。 多导频帧处理器（36）被布置为准备该块，使得导频信号第一类型的任何导频信号由块的第一组子载波的至少一些子载波和导频信号的任何导频信号 第二类型由块的第二组子载波的至少一些子载波承载。

公开(公告)号：US08111787B2

公开(公告)日：2012-02-07

申请号：US12265220

申请日：2008-11-05

Applicant: Havish Koorapaty ,  Jiann-Ching Guey

Inventor： Havish Koorapaty ,  Jiann-Ching Guey

IPC: H04L27/06

CPC classification number: H04L5/0048 ,  H04L25/0226 ,  H04L25/0232

Abstract: Smaller patterns of regularly-spaced pilot symbols are discerned from a larger pattern of irregularly-spaced pilot symbols transmitted in the time-frequency domain. Accordingly, the irregularly-spaced pilot symbols can be partitioned into at least two different groups of regularly-spaced pilot symbols in the time-frequency domain. Each group of regularly-spaced pilot symbols is individually processed with lower complexity and the results combined to generate an accurate time-frequency channel response estimate. According to an embodiment, a set of irregularly-spaced pilot symbols is transmitted over a time-frequency window. Channel response is estimated based on the pilot symbols by grouping the pilot symbols into subsets of regularly-spaced pilot symbols. An intermediate quantity is generated for each subset of regularly-spaced pilot symbols as a function of the pilot symbols included in the subset. The channel response is estimated over the time-frequency window as a function of the intermediate quantities.

Abstract translation: 从时频域中发送的不规则间隔的导频符号的较大模式可以看出较小的规则间隔导频符号模式。 因此，不规则间隔的导频符号可以被划分成时频域中的至少两个不同的规则间隔的导频符号组。 每组规则间隔的导频符号以较低的复杂度进行单独处理，并且结果组合以产生准确的时频信道响应估计。 根据实施例，在时间 - 频率窗口上发送一组不规则间隔的导频符号。 通过将导频符号分组成规则间隔的导频符号的子集，基于导频符号来估计信道响应。 根据包括在该子集中的导频符号的函数，为规则间隔的导频符号的每个子集生成中间量。 在时间 - 频率窗口上估计信道响应作为中间量的函数。

公开(公告)号：US20080031370A1

公开(公告)日：2008-02-07

申请号：US11497658

申请日：2006-08-02

Applicant: Jiann-Ching Guey ,  Havish Koorapaty

Inventor： Jiann-Ching Guey ,  Havish Koorapaty

IPC: H04K1/10

CPC classification number: H04L5/0048 ,  H04L5/0007 ,  H04L25/0226 ,  H04L25/0228 ,  H04L25/0242

Abstract: According to methods and apparatus taught herein, an Orthogonal Frequency Division Multiplexed (OFDM) transmitter increases pilot density in the edge regions of an OFDM signal, such as by using additional pilot sub carriers in the edge regions. For example, the OFDM signal includes first pilot sub carriers uniformly distributed across the frequency band of the OFDM signal, and second pilot sub carriers distributed within the edge regions. A corresponding OFDM receiver circuit uses the increased pilot density to improve channel estimation. For example, the receiver circuit uses the first pilot sub carriers in a Maximum Likelihood (ML) estimation process to obtain first channel estimates, and uses the results of ML estimation along with the second pilot sub carriers in a Minimum Mean Square Error (MMSE) estimation process to obtain second channel estimates. The receiver forms the improved channel estimates using the first and second channel estimates.

Abstract translation: 根据本文教导的方法和装置，正交频分复用（OFDM）发射机例如通过在边缘区域中使用附加导频子载波来增加OFDM信号的边缘区域中的导频密度。 例如，OFDM信号包括均匀分布在OFDM信号的频带上的第一导频子载波，以及分布在边缘区域内的第二导频子载波。 相应的OFDM接收机电路使用增加的导频密度来改善信道估计。 例如，接收机电路使用最大似然（ML）估计处理中的第一导频子载波来获得第一信道估计，并且以最小均方误差（MMSE）中的第二导频子载波与ML估计结果一起使用， 估计过程获得第二渠道估计。 接收机使用第一和第二信道估计来形成改进的信道估计。