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：US09603102B2

公开(公告)日：2017-03-21

申请号：US11748433

申请日：2007-05-14

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

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

IPC分类号： H04B17/02 ,  H04W52/24 ,  H04B7/04 ,  H04L25/02 ,  H04L5/00 ,  H04W16/24 ,  H04W52/32 ,  H04B17/24 ,  H04B17/309

CPC分类号： H04W52/24 ,  H04B7/0491 ,  H04B17/24 ,  H04B17/309 ,  H04L5/0007 ,  H04L5/0048 ,  H04L25/0226 ,  H04W16/24 ,  H04W52/325

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 required to achieve a desired SNR at the wireless terminal. The wireless terminal also reports information indicating its location to a sector boundary.

公开(公告)号：US07218948B2

公开(公告)日：2007-05-15

申请号：US10648766

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： H04Q7/20

CPC分类号： H04W52/24 ,  H04B7/0491 ,  H04B17/24 ,  H04B17/309 ,  H04L5/0007 ,  H04L5/0048 ,  H04L25/0226 ,  H04W16/24 ,  H04W52/325

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 required 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。 这两个值被发送回使用这两个值的基站，以确定在无线终端实现期望的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：US07420939B2

公开(公告)日：2008-09-02

申请号：US10641308

申请日：2003-08-13

申请人： Rajiv Laroia ,  Junyi Li ,  John L. Fan ,  Sundeep Rangan ,  Prashanth Hande

发明人： Rajiv Laroia ,  Junyi Li ,  John L. Fan ,  Sundeep Rangan ,  Prashanth Hande

IPC分类号： H04B7/185

CPC分类号： H04W52/08 ,  H04L27/2608 ,  H04L27/362 ,  H04W52/56 ,  H04W52/60

摘要： The present invention involves apparatus and methods to perform wireless terminal transmission power control. The invention uses novel and highly efficient methods to: convey power control information, specify power control level adjustments, recognize power control information, limit interference in the power control signaling, and recognize corrupted power control signaling, thus conserving wireless terminal energy and minimizing power control signaling and associated bandwidth. Base stations send analog power control command signals, with a continuous range of control levels, to wireless terminals for transmission power adjustments. Power control signals include two components which can be used to convey information, e.g., power control commands, signal quality, device identity information. For zero power adjustment, the control component signal is not transmitted. For a non-zero adjustment, power control signals are sent using control ranges and limits, known to the base station and wireless terminal, with the scaling adjusted or synchronized based upon feedback information.

摘要翻译： 本发明涉及执行无线终端传输功率控制的装置和方法。 本发明使用新颖且高效的方法：传送功率控制信息，指定功率控制电平调整，识别功率控制信息，限制功率控制信令中的干扰，并识别损坏的功率控制信令，从而节省无线终端能量并最小化功率控制 信令和相关带宽。 基站向无线终端发送模拟功率控制命令信号，具有连续的控制级别，用于传输功率调整。 功率控制信号包括可用于传送信息的两个组件，例如功率控制命令，信号质量，设备身份信息。 对于零功率调整，控制分量信号不发送。 对于非零调整，功率控制信号使用基站和无线终端已知的控制范围和限制，基于反馈信息进行缩放调整或同步。

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：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。

公开(公告)号：US08902865B2

公开(公告)日：2014-12-02

申请号：US11621983

申请日：2007-01-10

申请人： Rajiv Laroia ,  Frank A. Lane ,  Junyi Li ,  Tom Richardson

发明人： Rajiv Laroia ,  Frank A. Lane ,  Junyi Li ,  Tom Richardson

IPC分类号： H04W4/00 ,  H04L5/00 ,  H04W16/14 ,  H04W72/02 ,  H04W8/00 ,  H04L27/26 ,  H04W48/20 ,  H04W36/16 ,  H04W88/10 ,  H04W52/02 ,  H04W36/24 ,  H04W88/04 ,  H04J3/06 ,  H04W48/08 ,  H04W88/06 ,  H04W84/18 ,  H04W40/24 ,  H04W28/04 ,  H04W28/18 ,  H04W48/16 ,  H04W88/02 ,  H04W84/04 ,  H04W52/04

CPC分类号： H04W40/244 ,  H04J3/0602 ,  H04L5/0016 ,  H04L5/0035 ,  H04L5/0048 ,  H04L27/2601 ,  H04L27/261 ,  H04W8/005 ,  H04W16/14 ,  H04W28/04 ,  H04W28/18 ,  H04W36/16 ,  H04W36/24 ,  H04W40/24 ,  H04W48/08 ,  H04W48/16 ,  H04W48/20 ,  H04W52/0229 ,  H04W52/04 ,  H04W72/02 ,  H04W76/14 ,  H04W84/042 ,  H04W84/18 ,  H04W88/02 ,  H04W88/04 ,  H04W88/06 ,  H04W88/10 ,  Y02D70/1222 ,  Y02D70/1224 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/162 ,  Y02D70/164 ,  Y02D70/168 ,  Y02D70/22 ,  Y02D70/23

摘要： Wireless terminal operation is coordinated to be responsive to dynamic communications frequency spectrum reallocation between infrastructure based communications usage and peer to peer communications usage. Methods and apparatus in which mobile nodes switch between cellular and peer to peer communication modes of operation are described. Broadcast signals, e.g., beacon signals, are monitored and detected by the mobile node to ascertain a current spectrum usage designation, and the mobile node switches operational modes in response to detected changes in the broadcast signals.

摘要翻译： 协调无线终端操作以响应基于基础设施的通信使用和对等通信使用之间的动态通信频谱重新分配。 描述移动节点在蜂窝和对等通信操作模式之间切换的方法和装置。 诸如信标信号的广播信号被移动节点监视和检测以确定当前频谱使用指定，并且移动节点响应于广播信号中检测到的改变来切换操作模式。