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21.发明授权Variable spacing pulse position modulation for ultra-wideband communication links 有权用于超宽带通信链路的可变间隔脉冲位置调制公开(公告)号：US07082153B2
公开(公告)日：2006-07-25
申请号：US10251954
申请日：2002-09-23
申请人： Krishna Balachandran , Doru Calin , Tingfang Ji , Joseph H. Kang
发明人： Krishna Balachandran , Doru Calin , Tingfang Ji , Joseph H. Kang
CPC分类号： H04B1/7176 , H04B2001/6908 , H04L25/4902
摘要： Methods and systems for generating a variable spacing pulse position modulated (VSPPM) signal for transmission across an ultra-wideband communications channel. The variable pulse position modulated spread spectrum signal is created by encoding every M input data bits from an input data stream into a symbol consisting of Nc chips. Each chip is divided into 2M sub-chips and each sub-chip is further divided into Np time slots. A pulse is transmitted for each chip in the symbol. During each chip period, the pulse is placed in the sub-chip corresponding to the binary M-tuple (or symbol) value. A time hopping code sequence consisting of Nc elements with a one-to-one chip association is then applied to each symbol so that the position of each pulse is shifted to the appropriate time slot that corresponds to the time hopping code value.
摘要翻译： 用于生成用于跨超宽带通信信道传输的可变间隔脉冲位置调制（VSPPM）信号的方法和系统。 可变脉冲位置调制扩频信号是通过将每输入数据流中每M个输入数据位编码成由N个芯片组成的符号来产生的。 每个芯片被分成2个M个子芯片，并且每个子芯片被进一步分成N个时隙。 为符号中的每个芯片发送一个脉冲。 在每个码片周期期间，脉冲被放置在对应于二进制M元组（或符号）值的子芯片中。 然后将由具有一对一芯片关联的N＆lt; c＆gt;元素组成的跳时码序列应用于每个符号，使得每个脉冲的位置被转移到对应于 跳码代码。
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公开(公告)号：US10341994B2
公开(公告)日：2019-07-02
申请号：US15081171
申请日：2016-03-25
摘要： The present disclosure generally discloses an autonomous wireless transmission mechanism. The autonomous wireless transmission mechanism may be configured to support autonomous transmissions by wireless end devices to wireless access nodes in a connectionless manner. In general, an autonomous wireless transmission by a wireless end device may include transmission of a preamble in a preamble transmission zone and autonomous transmission of a payload over one or more resource units of one or more payload transmission zones without requiring establishment of a connection between the wireless end device and the wireless access node. The autonomous wireless transmission mechanism, by obviating the need for a wireless end device to establish a connection with a wireless access node in order to transmit data to the wireless access node, also obviates a need for the wireless end device to operate in a scheduled transmission mode.
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公开(公告)号：US20170280438A1
公开(公告)日：2017-09-28
申请号：US15081171
申请日：2016-03-25
CPC分类号： H04W72/0413 , H04W4/06 , H04W72/048 , H04W74/004 , H04W74/006 , H04W76/10
摘要： The present disclosure generally discloses an autonomous wireless transmission mechanism. The autonomous wireless transmission mechanism may be configured to support autonomous transmissions by wireless end devices to wireless access nodes in a connectionless manner. In general, an autonomous wireless transmission by a wireless end device may include transmission of a preamble in a preamble transmission zone and autonomous transmission of a payload over one or more resource units of one or more payload transmission zones without requiring establishment of a connection between the wireless end device and the wireless access node. The autonomous wireless transmission mechanism, by obviating the need for a wireless end device to establish a connection with a wireless access node in order to transmit data to the wireless access node, also obviates a need for the wireless end device to operate in a scheduled transmission mode.
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公开(公告)号：US20120207037A1
公开(公告)日：2012-08-16
申请号：US13027990
申请日：2011-02-15
CPC分类号： H04W28/16 , H04W72/044 , H04W72/048 , H04W72/0486 , H04W72/082
摘要： Systems and methods are disclosed for reusing resources of a wireless network. Radio communications resources of the wireless network are divided into partitions. A system described herein allows access to resources in the first partition by a first set of users for primary communications on the first partition, and allows access to resources in the first partition by a second set of users for secondary communications on the first partition. The control system also allows access to resources in the second partition by the second set of users for primary communications on the second partition, and allows access to resources in the second partition by the first set of users for secondary communications on the second partition.
摘要翻译： 公开了用于重用无线网络的资源的系统和方法。 无线网络的无线电通信资源分为分区。 本文描述的系统允许由第一组用户访问第一分区中的资源，用于第一分区上的主要通信，并且允许由第二组用户访问第一分区中的资源，用于在第一分区上进行二次通信。 控制系统还允许由第二组用户访问第二分区中的资源，用于第二分区上的主通信，并且允许由第一组用户访问第二分区中的资源，用于在第二分区上进行二次通信。
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公开(公告)号：US20120071153A1
公开(公告)日：2012-03-22
申请号：US12885126
申请日：2010-09-17
IPC分类号： H04W4/00
CPC分类号： H04J11/004 , H04B1/71072 , H04J11/0056
摘要： Among the various methods proposed to address interference problems in wireless networks, two promising ones are: Network Multi-Input-Multi-Output (often referred to as Network MIMO) decoding (which employs joint MIMO receiver processing of signals received at multiple antennas); and Multi-Cell Successive Interference Cancellation (MC-SIC). These methods have complementary strengths and limitations when implemented in a practical setting. The approach described herein attempts to combine the strengths of these two methods while working within the constraints imposed by practical implementations to provide a viable hybrid solution.
摘要翻译： 在解决无线网络干扰问题的各种方法中，两个有前途的方法有：网络多输入多输出（通常称为网络MIMO）解码（采用联合MIMO接收机处理在多个天线接收的信号）; 和多小区连续干扰消除（MC-SIC）。 这些方法在实际应用中具有互补的优点和局限性。 本文所述的方法尝试结合这两种方法的强度，同时在实际实施所施加的限制内工作以提供可行的混合解决方案。
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26.发明授权公开(公告)号：US07970425B2
公开(公告)日：2011-06-28
申请号：US11215669
申请日：2005-08-30
CPC分类号： H04W52/50 , H04W4/10 , H04W52/10 , H04W72/005 , H04W76/45
摘要： A push-to-talk (“PTT”) group call system, for use as, e.g., a public safety wireless network, includes a CDMA-based 1x-EVDO radio access network operably connected to a PTT server over an IP network. The radio access network includes base stations for radio communications with a number of distributed mobile stations. In carrying out wireless communications, the group call system combines IP-based voice and other real-time multimedia services with the 1x-EVDO radio access network's Broadcast Multicast Service. This allows a number of users to receive the same copy of an IP-based media stream for point-to-multipoint, group transmissions. To reduce call setup times, the group call system uses “standing” call groups, which are ongoing group communication channels pre-established between the PTT server and authorized group users. Thus, mobile stations link to one or more standing call groups of interest upon power-up, prior to users speaking.
摘要翻译： 用作例如公共安全无线网络的即按即说（“PTT”）组呼叫系统包括通过IP网络可操作地连接到PTT服务器的基于CDMA的1x-EVDO无线接入网络。 无线电接入网络包括用于与多个分布式移动台进行无线电通信的基站。 在进行无线通信时，群呼系统将IP语音和其他实时多媒体业务与1x-EVDO无线接入网广播组播业务相结合。 这允许多个用户接收用于点对多点，组传输的基于IP的媒体流的相同副本。 为了减少呼叫建立时间，组呼用系统使用“站立”呼叫组，这是PTT服务器和授权组用户之间预先建立的正在进行的组通信信道。 因此，在用户说话之前，移动站在上电时链接到一个或多个常用呼叫组。
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27.发明授权公开(公告)号：US07403790B2
公开(公告)日：2008-07-22
申请号：US10654426
申请日：2003-09-04
CPC分类号： H04W72/005 , H04W68/025
摘要： Methods for signaling information to a group of users in a communication network supporting a broadcast-multicast service are described, in which one or more indicator bits of a sequence may be assigned to indicate transmission of signaling information that is related to the group. The sequence may be transmitted to the group on a first channel, with the signaling information related to the group being transmitted on a second channel.
摘要翻译： 描述了在支持广播多播服务的通信网络中向一组用户发送信息的方法，其中可以分配序列的一个或多个指示符比特以指示与该组相关的信令信息的传输。 该序列可以在第一信道上发送到组，其中与在第二信道上发送的组相关的信令信息。
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28.发明申请Adaptive method of floor control with fast response time and fairness in communication network 有权自适应地板控制方法，响应时间快，通信网络公平公开(公告)号：US20080159177A1
公开(公告)日：2008-07-03
申请号：US11647930
申请日：2006-12-29
IPC分类号： H04L12/16
CPC分类号： H04L12/1822 , H04W72/005
摘要： In a floor control system for a network, a floor control server controls a floor-based application for communications between multiple participant terminals. The server carries out a floor determination process that includes an adaptive waiting function. Upon receiving an initial floor request message, the server waits for additional requests before determining the floor winner. The wait time is a function of the floor request load. When the system is lightly loaded, the wait time is generally small. For heavier request loads, the wait time is generally longer, to ensure that a reasonable number of requests are received before awarding the floor. The wait time may be limited by a maximum wait time, which is a function of the floor request load. If a designated number of floor requests is received before the maximum wait time expires, a temporary floor winner is granted the floor if its priority is sufficiently high.
摘要翻译： 在用于网络的楼层控制系统中，楼层控制服务器控制用于多个参与者终端之间的通信的基于楼层的应用。 服务器执行包括自适应等待功能的楼层确定过程。 在接收到初始楼层请求消息之后，服务器在确定楼层赢家之前等待附加请求。 等待时间是楼层请求负载的函数。 当系统轻载时，等待时间通常较小。 对于较重的请求负载，等待时间通常较长，以确保在授予发言权之前收到合理数量的请求。 等待时间可能受限于最大等待时间，这是楼层请求负载的函数。 如果在最大等待时间到期之前接收到指定数量的楼层请求，则如果其优先级足够高，则临时楼层优胜者被授予楼层。
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29.发明授权Method of transmitting broadcast-multicast services parameters messages in a wireless communications system 有权在无线通信系统中发送广播 - 组播服务参数消息的方法公开(公告)号：US07372823B2
公开(公告)日：2008-05-13
申请号：US10805701
申请日：2004-03-22
IPC分类号： H04H1/00
摘要： Rather than transmitting a large full Broadcast-Multicast Services (BCMC) Parameters Message (BSPM) containing a full set of BSPM parameters pertaining to all active BCMC flows within a sector on an infrequent basis, smaller-sized differential or partial BSPMs are instead transmitted. Differential BSPMs contain updated information for existing flows or information for new flows, and because of their smaller size, can be transmitted more frequently than full BSPMs. A mobile terminal receiving a differential BSPM updates the flows with the information contained within the differential BSPM or adds the information contained within the differential BSPM for a new flow. Partial BSPMs divide the flow information contained in a large full BSPM over a plurality of smaller-sized partial BSPMs, which are separately and sequentially transmitted at different times. A mobile terminal receiving these partial BSPMs then reconstructs the full BSPM from a collection of received partial BSPMs.
摘要翻译： 而不是发送一个大量的完整的广播 - 组播服务（BCMC）参数消息（BSPM），其中包含与不频繁的扇区内的所有活动BCMC流有关的全套BSPM参数，更小尺寸的差分或部分BSPM被传输。 差分BSPM包含用于新流的现有流或信息的更新信息，并且由于其较小的尺寸可以比全BSPM更频繁地传输。 接收差分BSPM的移动终端用包含在差分BSPM内的信息更新流，或者添加包含在差分BSPM中的信息用于新流。 部分BSPM将多个较小尺寸的部分BSPM中的大型完整BSPM中包含的流信息进行划分，这些BSPM在不同时间是单独依次发送的。 接收这些部分BSPM的移动终端然后从接收的部分BSPM的集合中重构完整BSPM。
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30.发明申请Methods of discovering neighbors in opportunistic open access ad hoc wireless networks 有权在机会开放接入自组织无线网络中发现邻居的方法公开(公告)号：US20080075145A1
公开(公告)日：2008-03-27
申请号：US11525495
申请日：2006-09-22
IPC分类号： H04B1/713
CPC分类号： H04W8/005 , H04B1/7143 , H04B1/715 , H04W84/18
摘要： In an ad hoc wireless network, for purposes of neighbor discovery, a transmitting node transmits a beacon within a timeslot and at a frequency that varies from timeslot-to-timeslot according to one or more associated and known pseudo-random or cyclical frequency hopping sequences. When, during a timeslot, the frequency hopping sequence would select a beacon frequency that if transmitted would violate spectrum policy that is in place during that timeslot, then, during that timeslot, a beacon is not transmitted during that timeslot. During each timeslot, a neighbor receiving node attempts to detect and decode a transmitted beacon at a frequency specified by the frequency hopping sequence that it expects a transmitting node to be using. When a receiving node successfully detects and decodes a beacon transmitted by a transmitting node, neighbor discovery between the transmitting and receiving nodes is achieved.
摘要翻译： 在自组织无线网络中，为了邻居发现的目的，发射节点根据一个或多个相关联和已知的伪随机或循环跳频序列在时隙内和频率上发射信标，时隙到时隙变化 。 当在时隙期间跳频序列将选择一个信标频率，如果传输的信号频率将违反在该时隙期间就位的频谱策略，则在该时隙期间，在该时隙期间不发送信标。 在每个时隙期间，邻居接收节点尝试以期望发射节点正在使用的跳频序列指定的频率来检测和解码所发送的信标。 当接收节点成功地检测并解码由发送节点发送的信标时，实现发送节点与接收节点之间的邻居发现。
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