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公开(公告)号：US20050254416A1
公开(公告)日：2005-11-17
申请号：US11186490
申请日：2005-07-20
申请人： Rajiv Laroia , Junyi Li , Sathyadev Uppala
发明人： Rajiv Laroia , Junyi Li , Sathyadev Uppala
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。
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公开(公告)号：US20050118981A1
公开(公告)日：2005-06-02
申请号：US11005550
申请日：2004-12-06
申请人： Rajiv Laroia , Junyi Li , Sathyadev Uppala
发明人： Rajiv Laroia , Junyi Li , Sathyadev Uppala
IPC分类号： H04W76/04 , H04B7/005 , H04L12/56 , H04M1/73 , H04W24/00 , H04W28/04 , H04W52/02 , H04W52/08 , H04W52/28 , H04W52/60 , H04W68/02 , H04W72/00 , H04W72/12 , H04B1/16
CPC分类号： H04W16/12 , H04W16/14 , H04W24/00 , H04W36/06 , H04W52/0235 , H04W52/028 , H04W52/08 , H04W52/281 , H04W52/283 , H04W52/286 , H04W52/287 , H04W52/288 , H04W52/60 , H04W68/02 , H04W68/025 , H04W72/00 , H04W72/0413 , H04W72/048 , Y02D70/23
摘要： The use of multiple states of mobile communication device operation to allow a single base station to support a relatively large number of mobile nodes is described. The various states require different amounts of communications resources, e.g., bandwidth. Four supported states of operation are an on-state, a hold-state, a sleep-state, and an access-state. Each mobile node in the on-state is allocated communication resources to perform transmission power control signaling, transmission timing control signaling and to transmit data as part of a data uplink communications operation. Each mobile node in the hold-state is allocated communication resources to perform transmission timing control signaling and is provided a dedicated uplink for requesting a state transition and a shared resource for transmitting acknowledgements. In the sleep state a mobile node is allocated minimal resources and does not conduct power control signaling or timing control signaling. Data may be received in the on and hold states.
摘要翻译： 描述了使用移动通信设备操作的多种状态来允许单个基站支持相对大量的移动节点。 各种状态需要不同数量的通信资源，例如带宽。 四个支持的操作状态是开状态，保持状态，睡眠状态和访问状态。 处于导通状态的每个移动节点被分配通信资源以执行传输功率控制信令，传输定时控制信令，并且作为数据上行链路通信操作的一部分来发送数据。 在保持状态下的每个移动节点被分配通信资源以执行传输定时控制信令，并且提供用于请求状态转换的专用上行链路和用于发送确认的共享资源。 在睡眠状态下，移动节点被分配最少资源，并且不进行功率控制信令或定时控制信令。 可以在接通和保持状态下接收数据。
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13.发明申请公开(公告)号：US20050036456A1
公开(公告)日：2005-02-17
申请号：US10640973
申请日：2003-08-13
申请人： Rajiv Laroia , Junyi Li , Sathyadev Uppala
发明人： Rajiv Laroia , Junyi Li , Sathyadev Uppala
CPC分类号： H04W72/0446 , H04W28/06 , H04W52/0216 , H04W52/0219 , H04W72/0406 , H04W72/082 , Y02D70/00
摘要： The invention describes methods and apparatus to structure the air link resources, e.g. traffic channel, into segments of different transmission segment types and effectively use that novel structure. Different segment types are structured to achieve different performance characteristics. The segments may be aligned with different offsetting start times chosen to minimize the variation in the maximum number of segments starting at any given time slot. This staggering of segment start times minimizes waste in unused assignment messages due to structural inefficiencies, and has an overall effect of balancing the traffic. Information collected on the channel quality that various user's are experiencing may be used to classify the users. Stored information on different segment types, each with different benefits, is used in the allocation process to effectively match classified users to well-suited segment types to increase performance, balance the system, conserve power, and satisfy the users.
摘要翻译： 本发明描述了用于构造空中链路资源的方法和装置，例如， 交通信道，分为不同传输段类型的分段，有效地利用了这种新颖的结构。 不同的分段类型被组织以实现不同的性能特征。 这些段可以与所选择的不同的偏移起始时间对准，以使从任何给定时隙开始的段的最大数量的变化最小化。 由于结构性低效率，片段启动时间的这种惊人的最小化使未使用的分配消息中的浪费最小化，并且具有平衡流量的整体效果。 关于各种用户正在经历的信道质量收集的信息可以用于对用户进行分类。 在分配过程中使用不同分段类型的存储信息，每种类型具有不同的优势，以有效地将分类用户与适合的分段类型相匹配，以提高性能，平衡系统，节约功能并满足用户需求。
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公开(公告)号：US20060242414A1
公开(公告)日：2006-10-26
申请号：US11471062
申请日：2006-06-19
申请人： M. Corson , Rajiv Laroia , Vincent Park , Sathyadev Uppala , Michaela Vanderveen
发明人： M. Corson , Rajiv Laroia , Vincent Park , Sathyadev Uppala , Michaela Vanderveen
IPC分类号： H04L9/00
CPC分类号： H04L9/3236 , H04L63/0807 , H04L63/12 , H04L2209/80 , H04W12/02 , H04W12/06 , H04W12/10 , H04W12/12 , H04W88/08
摘要： Signal, e.g., message, security techniques are described for wireless systems. A first signal is received by an access node via a wireless link. The signal includes a first authenticator that was generated by the transmitting device, e.g., wireless terminal. The access node determines from an attribute of the signal at least some information known to both the access node and transmitting device but which was not transmitted as part of the message content. The determined information was used by the wireless terminal in generating the first authenticator. The access node sends at least a portion of the first signal including the first authenticator and the determined information to another entity. The entity compares the first authenticator to a second authenticator it generates from the determined information and a secure key which it shares with the transmitting device to determine if the first and second authenticators match.
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公开(公告)号：US20060112183A1
公开(公告)日：2006-05-25
申请号：US11327791
申请日：2006-01-06
申请人： M. Corson , Rajiv Laroia , Vincent Park , Sathyadev Uppala , Michaela Vanderveen
发明人： M. Corson , Rajiv Laroia , Vincent Park , Sathyadev Uppala , Michaela Vanderveen
IPC分类号： G06F15/16
摘要： Location update techniques are described. A dormant mobile node updates its location information by sending a first message over a wireless link to an access node. The access node generates a second update message in response to the first message. The second message includes a mobile node identifier and, in some embodiments is directed to the mobile node. The second message is received by a tracking agent, which updates location information corresponding to the mobile node. In the case where second message is an IP message and is routed to the mobile node using Mobile IP, a Mobile IP home agent routes the second message to the mobile node's last point of network attachment where the tracking agent is located and intercepts the message. The tracking agent may send a response message to the access node sending the second message.
摘要翻译： 描述位置更新技术。 休眠移动节点通过无线链路向接入节点发送第一消息来更新其位置信息。 接入节点响应于第一消息生成第二更新消息。 第二消息包括移动节点标识符，并且在一些实施例中指向移动节点。 第二消息由跟踪代理接收，跟踪代理更新对应于移动节点的位置信息。 在第二消息是IP消息并且使用移动IP路由到移动节点的情况下，移动IP归属代理将第二消息路由到移动节点的最后一个网络附着点，跟踪代理所在的位置并拦截该消息。 跟踪代理可以向发送第二消息的接入节点发送响应消息。
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公开(公告)号：US20060050718A1
公开(公告)日：2006-03-09
申请号：US11204744
申请日：2005-08-16
申请人： M. Corson , Rajiv Laroia , Alan O'Neill , Vincent Park , Murari Srinivasan , Sathyadev Uppala
发明人： M. Corson , Rajiv Laroia , Alan O'Neill , Vincent Park , Murari Srinivasan , Sathyadev Uppala
CPC分类号： H04L12/1877 , H04L12/1836 , H04L12/1854 , H04L12/189 , H04L45/16 , H04W4/06 , H04W4/08 , H04W28/18 , H04W28/22 , H04W52/26 , H04W52/262 , H04W52/267 , H04W52/286 , H04W52/327 , H04W72/005 , H04W72/04 , H04W84/08
摘要： Group communications methods and apparatus are described. Multicast operation is supported with the transmission characteristics, e.g., transmission power level, coding rate, and/or modulation method being selected to reliably communicate information to the end nodes in the group but not necessarily to all end nodes within the cell or sector. Thus resources can be conserved by matching transmission requirements with information on the requirements of one or more group members. The requirements for reliably reaching the end node with the worst channel conditions can, and in some embodiments is, used to determine the group transmission requirements. Power level and other transmission resource allocations can change in response to changes in group membership and/or conditions corresponding to existing group members.
摘要翻译： 描述组通信方法和装置。 支持多播操作，例如，被选择的传输功率电平，编码速率和/或调制方法可靠地将信息传送到组中的端节点，但不一定要传送到小区或扇区内的所有端节点。 因此，可以通过将传输要求与一个或多个组成员的要求的信息相匹配来节约资源。 可靠地到达具有最差信道条件的端节点的要求可以并且在一些实施例中用于确定组传输要求。 功率等级和其他传输资源分配可以根据与现有组成员相对应的组成员资格和/或条件的变化而改变。
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公开(公告)号：US20070002859A1
公开(公告)日：2007-01-04
申请号：US11205294
申请日：2005-08-16
申请人： M. Corson , Rajiv Laroia , Alan O'Neill , Vincent Park , Murari Srinivasan , Sathyadev Uppala
发明人： M. Corson , Rajiv Laroia , Alan O'Neill , Vincent Park , Murari Srinivasan , Sathyadev Uppala
CPC分类号： H04L12/1877 , H04L12/1836 , H04L12/1854 , H04L12/189 , H04L45/16 , H04W4/06 , H04W4/08 , H04W28/18 , H04W28/22 , H04W52/26 , H04W52/262 , H04W52/267 , H04W52/286 , H04W52/327 , H04W72/005 , H04W72/04 , H04W84/08
摘要： Group communications methods and apparatus are described. Multiple modes of group communications signaling are supported. In a first mode, copies of packets are separately transmitted to each group member in a sector or cell. In a second mode a copy of a packet is directed to multiple group members at the same time. Transitions between the two modes may be determined as a function of the cost of operating in each of the modes in terms of system cost and/or the number of group members in a cell or sector being serviced by a transmitter.
摘要翻译： 描述组通信方法和装置。 支持组通信信令的多种模式。 在第一模式中，分组的副本被分别发送到扇区或单元中的每个组成员。 在第二模式中，分组的副本同时被引导到多个组成员。 可以根据系统成本和/或由发射机服务的小区或扇区中的组成员的数量来确定两种模式之间的转换作为在每个模式中操作的成本的函数。
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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
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.
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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
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
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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
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.
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