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51. 发明申请

US20070242764A1 Methods and apparatus related to using a wireless terminal scrambling identifier 有权
标题翻译：与使用无线终端扰乱标识符相关的方法和装置
公开(公告)号：US20070242764A1
公开(公告)日：2007-10-18
申请号：US11486609
申请日：2006-07-14
申请人： Pablo Anigstein , Prashanth Hande , Junyi Li , Rajiv Laroia , Sathyadev Venkata Uppala
发明人： Pablo Anigstein , Prashanth Hande , Junyi Li , Rajiv Laroia , Sathyadev Venkata Uppala
IPC分类号： H04K1/10
CPC分类号： H04L27/2602 , H04L5/0007 , H04L27/2655
摘要： 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.
摘要翻译：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。

52. 发明授权

US06922388B1 Signal construction, detection and estimation for uplink timing synchronization and access control in a multi-access wireless communication system 有权
标题翻译：用于多接入无线通信系统中的上行链路定时同步和接入控制的信号构造，检测和估计
公开(公告)号：US06922388B1
公开(公告)日：2005-07-26
申请号：US09503041
申请日：2000-02-11
申请人： Rajiv Laroia , Junyi Li , Sundeep Rangan , Sathyadev Venkata Uppala
发明人： Rajiv Laroia , Junyi Li , Sundeep Rangan , Sathyadev Venkata Uppala
IPC分类号： H04J11/00 , H04B7/26 , H04J3/06 , H04L5/02 , H04L7/10 , H04L27/26
CPC分类号： H04J3/0682 , H04L5/023 , H04L27/2607 , H04L27/2614 , H04L27/2646 , H04L27/2662
摘要： Signal construction, detection and estimation techniques for use in uplink timing synchronization and access control in an orthogonal frequency division multiplexed (OFDM) wireless system or other type of wireless communication system. In accordance with an illustrative embodiment of the invention, timing and access signals to be transmitted in designated timing and access intervals are constructed from orthogonal multitone signals. The multitone signals may be similar to multitone signals used in OFDM data transmission, except that a cyclic prefix associated with reception of the signals in a base station is extended to cover the timing errors of mobile stations not yet synchronized. The invention also provides design techniques which optimize the time resolvability and peak-to-average ratio of the multitone signals, an efficient fast Fourier transform (FFT) based technique for maximum likelihood timing estimation, and a robust linear filtering technique for averaging timing estimates from different synchronizations.
摘要翻译：用于正交频分复用（OFDM）无线系统或其他类型的无线通信系统中的上行链路定时同步和接入控制的信号构造，检测和估计技术。根据本发明的说明性实施例，将以指定的定时和访问间隔发送的定时和接入信号由正交多音信号构成。多音信号可以类似于在OFDM数据传输中使用的多音信号，除了与基站中的信号的接收相关联的循环前缀被扩展以覆盖尚未同步的移动台的定时错误。本发明还提供了优化多音信号的时间可解析性和峰均比的设计技术，用于最大似然定时估计的基于有效快速傅立叶变换（FFT）的技术，以及用于平均定时估计的鲁棒线性滤波技术不同的同步。

53. 发明授权

US06819930B1 Apparatus and method for use in allocating a channel resource in wireless multiple access communications systems 有权
标题翻译：用于在无线多址通信系统中分配信道资源的装置和方法
公开(公告)号：US06819930B1
公开(公告)日：2004-11-16
申请号：US09706377
申请日：2000-11-03
申请人： Rajiv Laroia , Junyi Li , Sathyadev Venkata Uppala
发明人： Rajiv Laroia , Junyi Li , Sathyadev Venkata Uppala
IPC分类号： H04Q720
CPC分类号： H04W72/14 , H04W28/06 , H04W48/08 , H04W48/16 , H04W72/00 , H04W72/04 , H04W72/042
摘要： Allocation of a wireless communications system channel resource is managed by utilizing traffic segment allocation. This is realized by partitioning the channel resource into an assignment channel and a traffic channel in a fixed manner. The assignment channel includes assignment segments and the traffic channel includes traffic segments. The traffic segment is the basic traffic channel resource unit used to transport traffic data and has a prescribed finite time interval and bandwidth. Each traffic segment is associated with a so-called assignment segment in a prescribed manner. One or more traffic segments may be associated with a particular assignment segment. A base station broadcasts via an assignment segment which wireless terminal is to use a particular traffic segment. This is realized by transmitting a simply identifier for the particular wireless terminal assigned to the particular traffic segment in the assignment segment. Then, each active wireless terminal monitors all of the received assignment segments to detect any traffic channel assignments. Once a wireless terminal detects its identifier in an assignment segment, it proceeds to receive/transmit the traffic data in the traffic segment associated with the assignment segment including the detected identifier.
摘要翻译：通过利用业务段分配来管理无线通信系统信道资源的分配。这是通过以固定的方式将信道资源划分为分配信道和业务信道来实现的。分配信道包括分配段，业务信道包括业务段。流量段是用于传输流量数据的基本业务信道资源单元，具有规定的有限时间间隔和带宽。每个流量段以规定的方式与所谓的分配段相关联。一个或多个业务段可以与特定分配段相关联。基站通过无线终端要使用特定业务段的分配段广播。这通过为分配给分配段中的特定业务段的特定无线终端发送简单的标识符来实现。然后，每个有源无线终端监视所有接收的分配段以检测任何业务信道分配。一旦无线终端在分配段中检测到其标识符，它继续接收/发送与包括检测到的标识符的分配段相关联的业务段中的业务数据。

54. 发明授权

US06816478B1 Apparatus and method for use in effecting automatic repeat requests in wireless multiple access communications systems 有权
标题翻译：用于在无线多址通信系统中实现自动重复请求的装置和方法
公开(公告)号：US06816478B1
公开(公告)日：2004-11-09
申请号：US09706132
申请日：2000-11-03
申请人： Rajiv Laroia , Junyi Li , Sathyadev Venkata Uppala
发明人： Rajiv Laroia , Junyi Li , Sathyadev Venkata Uppala
IPC分类号： H04J324
CPC分类号： H04L1/1671
摘要： In a wireless multiple access communications system a channel resource is managed by utilizing traffic segments and acknowledgment segments to determine if data traffic needs to be retransmitted. traffic data and has a prescribed finite time interval and bandwidth. Each traffic segment in a downlink or an uplink is associated with an acknowledgment segment in the uplink or downlink, respectively, in a fixed one-to-one manner. A base station uses the acknowledgment segments in the downlink to acknowledge the associated traffic segments successfully received in the uplink. A wireless terminal that receives a downlink traffic segment uses the associated acknowledgment segment in the uplink to acknowledge the traffic segment. The base station monitors all the acknowledgment segments to determine whether any of the traffic segments needs to be retransmitted.
摘要翻译：在无线多址通信系统中，通过利用业务段和确认段来管理信道资源以确定是否需要重传数据业务。交通数据并具有规定的有限时间间隔和带宽。下行链路或上行链路中的每个业务段分别以固定的一对一方式与上行链路或下行链路中的确认段相关联。基站使用下行链路中的确认段来确认在上行链路中成功接收的相关业务段。接收下行链路业务段的无线终端使用上行链路中的相关联的确认段来确认业务段。基站监视所有确认段以确定是否需要重传任何业务段。

55. 发明授权

US06804528B1 Apparatus and method for use in the multicast of traffic data in wireless multiple access communications systems 有权
标题翻译：用于无线多址通信系统中的业务数据组播中的装置和方法
公开(公告)号：US06804528B1
公开(公告)日：2004-10-12
申请号：US09706534
申请日：2000-11-03
申请人： Rajiv Laroia , Junyi Li , Sathyadev Venkata Uppala
发明人： Rajiv Laroia , Junyi Li , Sathyadev Venkata Uppala
IPC分类号： H04B701
CPC分类号： H04L12/189 , H04W68/00 , H04W72/005
摘要： In a wireless communications system, multicast messages are transported to groups of wireless terminals by employing a common control channel to transmit a multicast paging message indicating that multicast traffic data is to be transmitted to a particular group of wireless terminals. In an embodiment of the invention, the essential information transmitted in the common control channel is the identifier of the group of wireless terminals intended to receive the multicast traffic data and the location of a traffic channel on which the multicast traffic is to be transported in a channel resource which may include a representation of bandwidth and time interval. In accordance with an aspect of the invention, the common control channel is associated with a traffic channel in a prescribed fixed manner. Further, the traffic channel used for the purpose of multicast can be the same traffic channel used for the normal point-to-point transmission of traffic data.
摘要翻译：在无线通信系统中，通过采用公共控制信道将组播消息传送到无线终端组，以将表示组播业务数据要传送到特定无线终端组的组播寻呼消息。在本发明的一个实施例中，在公共控制信道中发送的基本信息是旨在接收多播业务数据的无线终端组的标识符以及要在其中传输组播业务的业务信道的位置信道资源，其可以包括带宽和时间间隔的表示。根据本发明的一个方面，公共控制信道以规定的固定方式与业务信道相关联。此外，用于组播目的的业务信道可以是用于业务数据的正常点对点传输的相同业务信道。

56. 发明授权

US08229427B2 Status validation for terminals in a wireless communication system 失效
标题翻译：无线通信系统中终端的状态验证
公开(公告)号：US08229427B2
公开(公告)日：2012-07-24
申请号：US11487259
申请日：2006-07-14
申请人： Rajiv Laroia , Junyi Li , Pablo Anigstein , Sathyadev Venkata Uppala
发明人： Rajiv Laroia , Junyi Li , Pablo Anigstein , Sathyadev Venkata Uppala
IPC分类号： H04W4/00 , H04M1/00 , H04J3/24 , H04B7/216
CPC分类号： H04W76/11 , H04W8/26 , H04W48/12 , H04W72/04 , H04W92/10
摘要： A terminal is assigned an active identifier for use while in an active state of a connection with a base station. The base station periodically broadcasts the status of the active identifiers for that base station, e.g., via status validation bits that indicate whether each active identifier is currently assigned to a terminal or not assigned to any terminal. The base station may also broadcast the identity (e.g., a scrambling mask) of the terminal assigned with each active identifier that is currently in use. If a terminal believes that it is assigned a particular active identifier, then the terminal checks the status validation bit for this active identifier. If this status validation bit indicates that the active identifier is currently in use, then the terminal may further check the scrambling mask sent for the active identifier in order to determine whether the terminal is actually assigned the active identifier.
摘要翻译：在处于与基站的连接的活动状态时，为终端分配有效标识符。基站周期性地广播该基站的活动标识符的状态，例如，经由状态验证比特，其指示每个活动标识符是否当前分配给终端或者未分配给任何终端。基站还可以广播分配有当前正在使用的每个活动标识符的终端的身份（例如，加扰掩码）。如果终端认为分配了特定的活动标识符，则终端检查该活动标识符的状态验证位。如果该状态验证位指示当前正在使用的活动标识符，则终端可进一步检查为活动标识符发送的加扰掩码，以确定终端是否实际分配了活动标识符。

57. 发明授权

US08139660B2 Methods and apparatus related to using a wireless terminal scrambling identifier 有权
标题翻译：与使用无线终端扰乱标识符相关的方法和装置
公开(公告)号：US08139660B2
公开(公告)日：2012-03-20
申请号：US11486609
申请日：2006-07-14
申请人： Pablo Anigstein , Prashanth Hande , Junyi Li , Rajiv Laroia , Sathyadev Venkata Uppala
发明人： Pablo Anigstein , Prashanth Hande , Junyi Li , Rajiv Laroia , Sathyadev Venkata Uppala
IPC分类号： H04K1/10
CPC分类号： H04L27/2602 , H04L5/0007 , H04L27/2655
摘要： 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.
摘要翻译：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。

58. 发明申请

US20110235745A1 SIGNALING METHOD IN AN OFDM MULTIPLE ACCESS SYSTEM 有权
公开(公告)号：US20110235745A1
公开(公告)日：2011-09-29
申请号：US13158196
申请日：2011-06-10
申请人： Rajiv Laroia , Junyi Li , Sathyadev Venkata Uppala
发明人： Rajiv Laroia , Junyi Li , Sathyadev Venkata Uppala
IPC分类号： H04L27/00
CPC分类号： H04L5/0007 , H04L5/023 , H04L27/2602 , H04L27/2614 , H04L27/2636
摘要： A method for reducing the peak-to-average ratio in an OFDM communication signal is provided. The method includes defining a constellation having a plurality of symbols, defining a symbol duration for the OFDM communication signal, and defining a plurality of time instants in the symbol duration. A plurality of tones are allocated to a particular communication device, and a discrete signal is constructed in the time domain by mapping symbols from the constellation to the time instants. A continuous signal is generated by applying an interpolation function to the discrete signal such that the continuous signal only includes sinusoids having frequencies which are equal to the allocated tones.

59. 发明申请

US20110235733A1 SIGNALING METHOD IN AN OFDM MULTIPLE ACCESS SYSTEM 有权
标题翻译： OFDM多路访问系统中的信号方法
公开(公告)号：US20110235733A1
公开(公告)日：2011-09-29
申请号：US13158170
申请日：2011-06-10
申请人： Rajiv Laroia , Junyi Li , Sathyadev Venkata Uppala
发明人： Rajiv Laroia , Junyi Li , Sathyadev Venkata Uppala
IPC分类号： H04L27/28
CPC分类号： H04L5/0007 , H04L5/023 , H04L27/2602 , H04L27/2614 , H04L27/2636
摘要： A method for reducing the peak-to-average ratio in an OFDM communication signal is provided. The method includes defining a constellation having a plurality of symbols, defining a symbol duration for the OFDM communication signal, and defining a plurality of time instants in the symbol duration. A plurality of tones are allocated to a particular communication device, and a discrete signal is constructed in the time domain by mapping symbols from the constellation to the time instants. A continuous signal is generated by applying an interpolation function to the discrete signal such that the continuous signal only includes sinusoids having frequencies which are equal to the allocated tones.
摘要翻译：提供了一种用于降低OFDM通信信号中的峰均比的方法。该方法包括定义具有多个符号的星座，定义OFDM通信信号的符号持续时间，以及定义符号持续时间中的多个时刻。将多个音调分配给特定的通信设备，并且通过将符号从星座映射到时刻在时域中构建离散信号。通过对离散信号应用内插函数来生成连续信号，使得连续信号仅包括具有等于所分配音调的频率的正弦曲线。

60. 发明授权

US07990844B2 Signaling method in an OFDM multiple access system 有权
公开(公告)号：US07990844B2
公开(公告)日：2011-08-02
申请号：US12759639
申请日：2010-04-13
申请人： Rajiv Laroia , Junyi Li , Sathyadev Venkata Uppala
发明人： Rajiv Laroia , Junyi Li , Sathyadev Venkata Uppala
IPC分类号： H04J11/00 , H04B7/216
CPC分类号： H04L5/0007 , H04L5/023 , H04L27/2602 , H04L27/2614 , H04L27/2636
摘要： A method for reducing the peak-to-average ratio in an OFDM communication signal is provided. The method includes defining a constellation having a plurality of symbols, defining a symbol duration for the OFDM communication signal, and defining a plurality of time instants in the symbol duration. A plurality of tones are allocated to a particular communication device, and a discrete signal is constructed in the time domain by mapping symbols from the constellation to the time instants. A continuous signal is generated by applying an interpolation function to the discrete signal such that the continuous signal only includes sinusoids having frequencies which are equal to the allocated tones.

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