公开(公告)号：US07859986B2

公开(公告)日：2010-12-28

申请号：US11153767

申请日：2005-06-14

申请人： Rajiv Laroia ,  Charles Stanski ,  Junyi Li

发明人： Rajiv Laroia ,  Charles Stanski ,  Junyi Li

IPC分类号： H04J11/00

CPC分类号： H04W48/10 ,  H04L5/0007 ,  H04L5/0039 ,  H04L5/0048 ,  H04L25/0226 ,  H04L27/2655 ,  H04W48/16

摘要： Transmitting signals, e.g., high power narrow band signals on a periodic basis to facilitate detection of a frequency band and/or carrier signal to be used for communication with a basestation are described. The detected frequency band may be a downlink frequency band. The uplink frequency band to be used can be determined from a know frequency relationship between the detected downlink carrier and a corresponding uplink carrier or by monitoring the detected downlink frequency band for information indicating the uplink frequency band/carrier to be used. Carrier search methods involving searching for the narrowband high power signals used to provide carrier information and/or to indicate the frequency band to be monitored are described. Power detection methods can be used to detect the high power signals avoiding the need for symbol timing synchronization and/or channel estimation with regard to detection of the signals used to locate the frequency band to be used.

摘要翻译： 描述了周期性地发送信号，例如高功率窄带信号，以便于检测用于与基站通信的频带和/或载波信号。 所检测的频带可以是下行链路频带。 可以从检测到的下行链路载波和对应的上行链路载波之间的已知频率关系来确定要使用的上行链路频带，或者通过监视检测到的下行链路频带来指示要使用的上行链路频带/载波的信息。 描述了涉及搜索用于提供载波信息的窄带高功率信号和/或指示要监视的频带的载波搜索方法。 功率检测方法可以用于检测高功率信号，从而避免了对用于定位要使用的频带的信号的检测的符号定时同步和/或信道估计的需要。

公开(公告)号：US07092353B2

公开(公告)日：2006-08-15

申请号：US10964965

申请日：2004-10-14

申请人： Rajiv Laroia ,  Charles Stanski ,  Junyi Li

发明人： Rajiv Laroia ,  Charles Stanski ,  Junyi Li

IPC分类号： H04J11/00 ,  H04J4/00 ,  H04Q7/00

CPC分类号： H04W48/10 ,  H04L5/0007 ,  H04L5/0039 ,  H04L5/0048 ,  H04L25/0226 ,  H04L27/2655 ,  H04W48/16

摘要： Transmitting signals, e.g., high power narrow band signals on a periodic basis to facilitate detection of a frequency band and/or carrier signal to be used for communication with a basestation are described. The detected frequency band may be a downlink frequency band. The uplink frequency band to be used can be determined from a know frequency relationship between the detected downlink carrier and a corresponding uplink carrier or by monitoring the detected downlink frequency band for information indicating the uplink frequency band/carrier to be used. Carrier search methods involving searching for the narrowband high power signals used to provide carrier information and/or to indicate the frequency band to be monitored are described. Power detection methods can be used to detect the high power signals avoiding the need for symbol timing synchronization and/or channel estimation with regard to detection of the signals used to locate the frequency band to be used.

摘要翻译： 描述了周期性地发送信号，例如高功率窄带信号，以便于检测用于与基站通信的频带和/或载波信号。 所检测的频带可以是下行链路频带。 可以从检测到的下行链路载波和对应的上行链路载波之间的已知频率关系来确定要使用的上行链路频带，或者通过监视检测到的下行链路频带来指示要使用的上行链路频带/载波的信息。 描述了涉及搜索用于提供载波信息的窄带高功率信号和/或指示要监视的频带的载波搜索方法。 功率检测方法可以用于检测高功率信号，从而避免了对用于定位要使用的频带的信号的检测的符号定时同步和/或信道估计的需要。

公开(公告)号：US20050250469A1

公开(公告)日：2005-11-10

申请号：US11153767

申请日：2005-06-14

申请人： Rajiv Laroia ,  Charles Stanski ,  Junyi Li

发明人： Rajiv Laroia ,  Charles Stanski ,  Junyi Li

IPC分类号： G06F20060101 ,  H04L27/26 ,  H04M11/00 ,  H04W48/10 ,  H04W48/16

CPC分类号： H04W48/10 ,  H04L5/0007 ,  H04L5/0039 ,  H04L5/0048 ,  H04L25/0226 ,  H04L27/2655 ,  H04W48/16

摘要： Transmitting signals, e.g., high power narrow band signals on a periodic basis to facilitate detection of a frequency band and/or carrier signal to be used for communication with a basestation are described. The detected frequency band may be a downlink frequency band. The uplink frequency band to be used can be determined from a know frequency relationship between the detected downlink carrier and a corresponding uplink carrier or by monitoring the detected downlink frequency band for information indicating the uplink frequency band/carrier to be used. Carrier search methods involving searching for the narrowband high power signals used to provide carrier information and/or to indicate the frequency band to be monitored are described. Power detection methods can be used to detect the high power signals avoiding the need for symbol timing synchronization and/or channel estimation with regard to detection of the signals used to locate the frequency band to be used.

公开(公告)号：US20050085214A1

公开(公告)日：2005-04-21

申请号：US10964965

申请日：2004-10-14

申请人： Rajiv Laroia ,  Charles Stanski ,  Junyi Li

发明人： Rajiv Laroia ,  Charles Stanski ,  Junyi Li

IPC分类号： G06F20060101 ,  H04L27/26 ,  H04M11/00 ,  H04W48/10 ,  H04W48/16

CPC分类号： H04W48/10 ,  H04L5/0007 ,  H04L5/0039 ,  H04L5/0048 ,  H04L25/0226 ,  H04L27/2655 ,  H04W48/16

摘要： Transmitting signals, e.g., high power narrow band signals on a periodic basis to facilitate detection of a frequency band and/or carrier signal to be used for communication with a basestation are described. The detected frequency band may be a downlink frequency band. The uplink frequency band to be used can be determined from a know frequency relationship between the detected downlink carrier and a corresponding uplink carrier or by monitoring the detected downlink frequency band for information indicating the uplink frequency band/carrier to be used. Carrier search methods involving searching for the narrowband high power signals used to provide carrier information and/or to indicate the frequency band to be monitored are described. Power detection methods can be used to detect the high power signals avoiding the need for symbol timing synchronization and/or channel estimation with regard to detection of the signals used to locate the frequency band to be used.

摘要翻译： 描述了周期性地发送信号，例如高功率窄带信号，以便于检测用于与基站通信的频带和/或载波信号。 所检测的频带可以是下行链路频带。 可以从检测到的下行链路载波和对应的上行链路载波之间的已知频率关系来确定要使用的上行链路频带，或者通过监视检测到的下行链路频带来指示要使用的上行链路频带/载波的信息。 描述了涉及搜索用于提供载波信息的窄带高功率信号和/或指示要监视的频带的载波搜索方法。 功率检测方法可以用于检测高功率信号，从而避免了对用于定位要使用的频带的信号的检测的符号定时同步和/或信道估计的需要。

公开(公告)号：US09838365B2

公开(公告)日：2017-12-05

申请号：US12147967

申请日：2008-06-27

申请人： Vincent D. Park ,  Rajiv Laroia ,  Junyi Li

发明人： Vincent D. Park ,  Rajiv Laroia ,  Junyi Li

IPC分类号： H04L29/06 ,  H04L9/08 ,  H04W12/04 ,  H04W8/26 ,  H04W8/00 ,  H04W48/08 ,  H04W92/18

CPC分类号： H04L63/061 ,  H04L9/0866 ,  H04L9/0872 ,  H04L63/0846 ,  H04L63/0876 ,  H04W8/005 ,  H04W8/26 ,  H04W12/04 ,  H04W48/08 ,  H04W92/18

摘要： In an ad hoc peer-to-peer type network during peer discovery, information relating to users of various devices is broadcast to other devices in the network, which can compromise privacy of the users. Instead of announcing a public identifier that might be known by a multitude of individuals, the user device announces a private identifier that might be known to, or determined by, a select few individuals. The individuals selected can be given a key to determine the private identifier associated with a public identifier, or vice versa, wherein that key can have a validity range or a period of time, after which the key expires. Prior to the expiration of the key, the selected individuals, through their respective devices, can detect a corresponding user and/or device by the current private identifier being announced, thus mitigating the number of people that are aware of the user's presence.

公开(公告)号：US09787777B2

公开(公告)日：2017-10-10

申请号：US12047713

申请日：2008-03-13

申请人： Junyi Li ,  Rajiv Laroia ,  Vincent D. Park ,  Thomas Richardson ,  Saurabh Tavildar ,  Xinzhou Wu

发明人： Junyi Li ,  Rajiv Laroia ,  Vincent D. Park ,  Thomas Richardson ,  Saurabh Tavildar ,  Xinzhou Wu

IPC分类号： H04L12/28 ,  H04L29/08 ,  H04W4/02 ,  H04W68/00 ,  H04W40/24

CPC分类号： H04L67/16 ,  H04L67/18 ,  H04W4/02 ,  H04W4/021 ,  H04W40/246 ,  H04W68/00 ,  Y02D30/40 ,  Y02D70/00 ,  Y02D70/20

摘要： Methods and apparatus for wireless communications in regional networks, e.g., ad hoc peer to peer networks, are described. Wireless communications devices transmit and monitor for presence indicator signals broadcast from other peer communications devices in its local vicinity. A wireless communications device maintains a list of discovered devices in its vicinity. A first wireless communications device transmits a paging signal directly over an airlink to a second communications device, which is on its list and to which it desires to send data units, e.g., user data in a peer to peer traffic segment. In response to a received paging response signal from the second device, the first device transmits data units, intended for the second device, to a third device, which acts as an intermediary node. The power level for the data unit signal is controlled to be lower than the power level used for the paging signal. FIG. 4

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.

公开(公告)号：US09544860B2

公开(公告)日：2017-01-10

申请号：US10648767

申请日：2003-08-25

申请人： Rajiv Laroia ,  John L. Fan ,  Junyi Li

发明人： Rajiv Laroia ,  John L. Fan ,  Junyi Li

IPC分类号： H04W52/04 ,  H04B15/00 ,  H04W52/32 ,  H04B7/04 ,  H04W16/24 ,  H04W52/24 ,  H04B17/24 ,  H04B17/309

CPC分类号： H04W52/325 ,  H04B7/0491 ,  H04B17/24 ,  H04B17/309 ,  H04W16/24 ,  H04W52/24

摘要： Pilot signal transmission sequences and methods for use in a multi-sector cell. Pilots in different sectors are transmitted at different known power levels. In adjacent sectors a pilot is transmitted while no pilot is transmitted in the adjoining sector. This represents transmission of a NULL pilot signal. A cell NULL is also supported in which NULL pilots are transmitted in each sector of a cell at the same time. Multiple pilot signal measurements are made. At least two channel quality indicator values are generated from measurements corresponding to at least two pilot signals of different power levels. The two values are transmitted back to the base station which uses both values to determine the transmit power requited to achieve a desired SNR at the wireless terminal. The wireless terminal also reports information indicating its location to a sector boundary.

摘要翻译： 导频信号传输序列和用于多扇区小区的方法。 不同扇区的飞行员以不同的已知功率水平传输。 在相邻扇区中，在相邻扇区中没有发送导频的情况下发送导频。 这表示空导频信号的传输。 还支持单元空白，其中NULL导频在单元的每个扇区中同时被发送。 进行多个导频信号测量。 至少两个信道质量指标值是从对应于不同功率电平的至少两个导频信号的测量产生的。 这两个值被发送回基站，其使用两个值来确定在无线终端处实现期望的SNR所需的发射功率。 无线终端还向扇区边界报告指示其位置的信息。

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.

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。