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1. 发明授权

US09661519B2 Efficient reporting of information in a wireless communication system 有权
公开(公告)号：US09661519B2
公开(公告)日：2017-05-23
申请号：US11486601
申请日：2006-07-14
申请人： Arnab Das , Sundeep Rangan , Pablo Anigstein , Junyi Li , Sathyadev Venkata Uppala , Rajiv Laroia
发明人： Arnab Das , Sundeep Rangan , Pablo Anigstein , Junyi Li , Sathyadev Venkata Uppala , Rajiv Laroia
IPC分类号： H04W24/10 , H04L1/00 , H04W24/00
CPC分类号： H04W24/10 , H04L1/0006 , H04L1/0026 , H04W24/00
摘要： Techniques for efficiently sending reports in a wireless communication system are described. Reports may be sent repetitively in accordance with a reporting format. A terminal receives an assignment of a control channel used to send reports and determines a reporting format to use based on the assignment. The reporting format indicates a specific sequence of reports sent in specific locations of a control channel frame. The terminal generates a set of reports for each reporting interval and arranges the set of reports in accordance with the reporting format. The terminal repetitively sends a plurality of sets of reports in a plurality of reporting intervals. Reports may also be sent adaptively based on operating conditions. An appropriate reporting format may be selected based on the operating conditions of the terminal, which may be characterized by environment (e.g., mobility), capabilities, QoS, and/or other factors.

2. 发明申请

US20100211540A9 Efficient reporting of information in a wireless communication system 有权
标题翻译：在无线通信系统中有效地报告信息
公开(公告)号：US20100211540A9
公开(公告)日：2010-08-19
申请号：US11486601
申请日：2006-07-14
申请人： Arnab Das , Sundeep Rangan , Pablo Anigstein , Junyi Li , Sathyadev Venkata Uppala , Rajiv Laroia
发明人： Arnab Das , Sundeep Rangan , Pablo Anigstein , Junyi Li , Sathyadev Venkata Uppala , Rajiv Laroia
IPC分类号： G06F17/30
CPC分类号： H04W24/10 , H04L1/0006 , H04L1/0026 , H04W24/00
摘要： Techniques for efficiently sending reports in a wireless communication system are described. Reports may be sent repetitively in accordance with a reporting format. A terminal receives an assignment of a control channel used to send reports and determines a reporting format to use based on the assignment. The reporting format indicates a specific sequence of reports sent in specific locations of a control channel frame. The terminal generates a set of reports for each reporting interval and arranges the set of reports in accordance with the reporting format. The terminal repetitively sends a plurality of sets of reports in a plurality of reporting intervals. Reports may also be sent adaptively based on operating conditions. An appropriate reporting format may be selected based on the operating conditions of the terminal, which may be characterized by environment (e.g., mobility), capabilities, QoS, and/or other factors.
摘要翻译：描述在无线通信系统中有效地发送报告的技术。可以按照报告格式重复发送报告。终端接收用于发送报告的控制信道的分配，并根据分配确定要使用的报告格式。报告格式指示在控制信道帧的特定位置发送的特定报告序列。终端为每个报告间隔生成一组报告，并根据报告格式安排报告集。终端在多个报告间隔重复发送多组报告。报告也可以根据操作条件自适应地发送。可以基于可以由环境（例如，移动性），能力，QoS和/或其他因素来表征的终端的操作条件来选择适当的报告格式。

3. 发明申请

US20070168326A1 Efficient reporting of information in a wireless communication system 有权
标题翻译：在无线通信系统中有效地报告信息
公开(公告)号：US20070168326A1
公开(公告)日：2007-07-19
申请号：US11486601
申请日：2006-07-14
申请人： Arnab Das , Sundeep Rangan , Pablo Anigstein , Junyi Li , Sathyadev Venkata Uppala , Rajiv Laroia
发明人： Arnab Das , Sundeep Rangan , Pablo Anigstein , Junyi Li , Sathyadev Venkata Uppala , Rajiv Laroia
IPC分类号： G06F17/30
CPC分类号： H04W24/10 , H04L1/0006 , H04L1/0026 , H04W24/00
摘要： Techniques for efficiently sending reports in a wireless communication system are described. Reports may be sent repetitively in accordance with a reporting format. A terminal receives an assignment of a control channel used to send reports and determines a reporting format to use based on the assignment. The reporting format indicates a specific sequence of reports sent in specific locations of a control channel frame. The terminal generates a set of reports for each reporting interval and arranges the set of reports in accordance with the reporting format. The terminal repetitively sends a plurality of sets of reports in a plurality of reporting intervals. Reports may also be sent adaptively based on operating conditions. An appropriate reporting format may be selected based on the operating conditions of the terminal, which may be characterized by environment (e.g., mobility), capabilities, QoS, and/or other factors.
摘要翻译：描述在无线通信系统中有效地发送报告的技术。可以按照报告格式重复发送报告。终端接收用于发送报告的控制信道的分配，并根据分配确定要使用的报告格式。报告格式指示在控制信道帧的特定位置发送的特定报告序列。终端为每个报告间隔生成一组报告，并根据报告格式安排报告集。终端在多个报告间隔重复发送多组报告。报告也可以根据操作条件自适应地发送。可以基于可以由环境（例如，移动性），能力，QoS和/或其他因素来表征的终端的操作条件来选择适当的报告格式。

4. 发明授权

US06967936B1 Uplink timing synchronization and access control for a multi-access wireless communication system 有权
标题翻译：用于多址无线通信系统的上行链路定时同步和访问控制
公开(公告)号：US06967936B1
公开(公告)日：2005-11-22
申请号：US09503040
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 , H04L5/02 , H04L7/00 , H04L27/26 , H04Q7/00
CPC分类号： H04W56/0005 , H04J3/0682 , H04L5/023
摘要： Improved timing synchronization and access control techniques for use in an orthogonal frequency division multiplexed (OFDM) wireless system or other type of wireless communication system. In accordance with the invention, an uplink synchronization and access control system is provided in which mobile stations transmit certain timing and access signals in dedicated intervals in an uplink stream. Access control is illustratively implemented as a two-stage process in which a given mobile first transmits a generic uplink access signal in one of the intervals. If this access is accepted, the base station transmits an access acknowledgment containing initial timing and power corrections, along with initial channel assignments on which the mobile can initiate a call set-up process. For re-synchronization, mobiles transmit timing synchronization signals in the dedicated timing and access intervals. The base station measures the arrival time of the signals, and sends back appropriate timing corrections. The invention thereby ensures that orthogonality between mobiles is maintained.
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改进的定时同步和接入控制技术。根据本发明，提供一种上行链路同步和接入控制系统，其中移动台在上行链路流中以专用间隔发送某些定时和接入信号。访问控制被示意性地实现为两阶段过程，其中给定移动单元首先在其中一个间隔中发送通用上行链路接入信号。如果该接入被接受，则基站发送包含初始定时和功率校正的接入确认以及移动台可以在其上启动呼叫建立过程的初始信道分配。为了重新同步，移动台以专用定时和接入间隔发送定时同步信号。基站测量信号的到达时间，并发回适当的时序校正。因此，本发明确保了移动台之间的正交性得以维持。

5. 发明授权

US06553019B1 Communications system employing orthogonal frequency division multiplexing based spread sprectrum multiple access 有权
公开(公告)号：US06553019B1
公开(公告)日：2003-04-22
申请号：US09472074
申请日：1999-12-23
申请人： Rajiv Laroia , Junyi Li , Sathyadev Venkata Uppala , Sundeep Rangan
发明人： Rajiv Laroia , Junyi Li , Sathyadev Venkata Uppala , Sundeep Rangan
IPC分类号： H04J100
CPC分类号： H04L5/026 , H04B1/7136 , H04B1/7143 , H04L5/0007
摘要： Tone sequences in a frequency hopping arrangement are generated and assigned by advantageously employing a combination of a sequence generator and a sequence assignor to generate sequences and assign them on a time slot by time slot basis. In a transmitter, the sequence generator and sequence assignor, in combination with a user tone assignor are employed to generate and assign tone sequences to a user on a time slot by time slot basis. In a receiver, the sequence generator and sequence assignor, in combination with a user tone identifier are employed to generate sequences and to identify incoming tone sequences to a user on a time slot by time slot basis. Specifically, the sequence assignment in a time slot is such that a prescribed plurality of sequences is assigned to a particular user. This partitioning of the tasks facilitates the use of a sequence generator that generates sequences with the desirable properties of interference and frequency diversity and, which, leaves the task of properly assigning these sequences among one or more users to the sequence assignor. The sequence assignor functions in such a manner that the interference and frequency diversity properties for the one or more users are preserved, and this is further facilitated by assigning sequences in such a manner that they maximally overlap prior assigned sequences. In one embodiment of the invention, a Latin square based sequence is generated in accordance with a first prescribed process. In a second embodiment of the invention, a Latin cube based sequence is generated in accordance with a second prescribed process. In a third embodiment of the invention, a Latin hypercube of prescribed dimension based sequence is generated in accordance with a third prescribed process. In still another embodiment of the invention, the principles of the invention are employed to realize frequency band hopping.

6. 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。

7. 发明授权

US09426012B2 Signaling method in an OFDM multiple access system 有权
公开(公告)号：US09426012B2
公开(公告)日：2016-08-23
申请号：US13619460
申请日：2012-09-14
申请人： Rajiv Laroia , Junyi Li , Sathyadev Venkata Uppala
发明人： Rajiv Laroia , Junyi Li , Sathyadev Venkata Uppala
IPC分类号： H04L27/26 , H04L5/02
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.

8. 发明授权

US09338767B2 Methods and apparatus of implementing and/or using a dedicated control channel 有权
标题翻译：实现和/或使用专用控制通道的方法和装置
公开(公告)号：US09338767B2
公开(公告)日：2016-05-10
申请号：US11333792
申请日：2006-01-17
申请人： Vladimir Parizhsky , Rajiv Laroia , Junyi Li , Sathyadev Venkata Uppala , Arnab Das
发明人： Vladimir Parizhsky , Rajiv Laroia , Junyi Li , Sathyadev Venkata Uppala , Arnab Das
IPC分类号： H04B7/00 , H04W72/04 , H04L12/801 , H04W28/18 , H04W72/00 , H04W74/08 , H04L1/00 , H04L27/26 , H04W24/10 , H04W28/12 , H04W28/24 , H04W72/12
CPC分类号： H04W72/0453 , H04L1/0026 , H04L27/2602 , H04L47/10 , H04W24/02 , H04W24/10 , H04W28/12 , H04W28/18 , H04W28/24 , H04W72/005 , H04W72/0413 , H04W72/042 , H04W72/1221 , H04W72/1236 , H04W72/1242 , H04W72/1252 , H04W72/1284 , H04W74/0875
摘要： Wireless terminals and base stations support multiple modes of control channel operation wherein wireless terminals are allocated different amounts of uplink resources for reporting control information. A set of control channel segments is utilized by a wireless terminal to communicate uplink control information reports to its serving base station attachment point. Full tone and split-tone modes of control channel operation are supported. In full tone mode, a single wireless terminal is allocated each of the control channel segments associated with a single logical tone. In split tone mode, control channel segments associated with a single logical tone are allocated between different wireless terminals, with each of the multiple wireless terminals receiving a different non-overlapping subset of the control channel segments. Logical control channel tones can be dynamically reallocated for full-tone mode use or split tone mode use.
摘要翻译：无线终端和基站支持多种模式的控制信道操作，其中无线终端被分配不同量的用于报告控制信息的上行链路资源。无线终端利用一组控制信道段将上行链路控制信息报告传送到其服务基站附着点。支持全频和分频模式的控制通道操作。在全音模式下，分配与单个逻辑音调相关联的每个控制信道段的单个无线终端。在分离音模式中，与单个逻辑音调相关联的控制信道分段被分配在不同无线终端之间，多个无线终端中的每一个接收控制信道分段的不同的非重叠子集。可以动态地重新分配逻辑控制信道音调以进行全音色模式使用或分离音模式的使用。

9. 发明授权

US08036672B2 Methods and apparatus related to resource allocation in a wireless communications system 有权
标题翻译：与无线通信系统中的资源分配有关的方法和装置
公开(公告)号：US08036672B2
公开(公告)日：2011-10-11
申请号：US11486810
申请日：2006-07-14
申请人： Rajiv Laroia , Vladimir Parizhsky , Junyi Li , Sathyadev Venkata Uppala
发明人： Rajiv Laroia , Vladimir Parizhsky , Junyi Li , Sathyadev Venkata Uppala
IPC分类号： H04W72/00
CPC分类号： H04W72/042 , H04W74/04
摘要： Methods and apparatus of efficient communication of resource allocation are described. A base station transmits a resource assignment message, e.g., a state transition message, to a wireless terminal including a first part, e.g., a base station assigned wireless terminal On state identifier, identifying a resource being assigned and a second part, e.g., an ON state mask, identifying a portion of the resource allocated to the wireless terminal. The same resource allocation message information also communicates one of a plurality of different modes of commanded On state operation. The resource allocation message structure supports flexible allocation of available resources facilitating a resource to be partitioned differently at different times accommodating current needs. A predetermined recurring channel structure and association of segments with particular mask bits, facilitates allocated control segments to be used unambiguously without the need to include an overhead wireless terminal identifier field with the control report bits being communicated.
摘要翻译：描述资源分配高效通信的方法和装置。基站将资源分配消息（例如，状态转换消息）发送到包括第一部分的无线终端，例如基站分配的无线终端开状态标识符，识别被分配的资源和第二部分，例如， ON状态掩码，识别分配给无线终端的资源的一部分。相同的资源分配消息信息还传送多个不同模式的命令开状态操作中的一个。资源分配消息结构支持可用资源的灵活分配，便于在适应当前需求的不同时刻对不同的分区进行分区。预定的重复频道结构和段与特定屏蔽位的关联有助于分配的控制段被明确使用，而不需要包括传送控制报告位的开销无线终端标识符字段。

10. 发明授权

US07916624B2 Signaling method in an OFDM multiple access system 有权
公开(公告)号：US07916624B2
公开(公告)日：2011-03-29
申请号：US12759634
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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