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公开(公告)号：US07408931B2
公开(公告)日：2008-08-05
申请号：US11025613
申请日：2004-12-29
CPC分类号： H04L12/189 , H04L1/1671 , H04L1/1887 , H04L12/1868 , H04L2001/0093 , H04W74/08 , H04W76/40 , Y02D70/142 , Y02D70/144
摘要： Methods for delivery of multicast packets in a wireless communication system are disclosed. The methods comprise transmitting a contention free period initiation signal from an access point to the station, transmitting broadcast packets from the access point to the station, transmitting multicast packets from the access point to the station and holding the multicast packets in storage after the transmission, transmitting a contention free period end signal from the access point to the station, determining if a negative acknowledgement message has been received, retransmitting the multicast packets in response to receiving a negative acknowledgment message, and eliminating the multicast packets at a next beacon interval.
摘要翻译： 公开了在无线通信系统中传送多播分组的方法。 所述方法包括：将无争用时段发起信号从接入点发送到所述站，从所述接入点向所述站发送广播分组，从所述接入点向所述站发送组播分组，并在所述传输之后保存所述多播分组， 从所述接入点向所述站发送无争用时段结束信号，确定是否已经接收到否定确认消息，响应于接收到否定确认消息重传所述多播分组，以及在下一个信标间隔消除所述多播分组。
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公开(公告)号：US07382758B2
公开(公告)日：2008-06-03
申请号：US10999759
申请日：2004-11-30
IPC分类号： H04Q7/28
CPC分类号： H04W74/04
摘要： A method and system for wireless data transmission between at least three stations use multiple frequency bands for simultaneous channel communications. The method includes transmitting a Request To Send (RTS) packet from a first station to an intermediate second station over a first frequency band. Two Clear To Send (CTS) packets, which CTS packets include transmission timing information, are then transmitted from the second station simultaneously both to the first station and to a third station. The CTS packet sent to the first station is transmitted over the first frequency band and the CTS packet sent to the third station is transmitted over a second frequency band. A data packet from the first station is then transmitted to the second station. The third station suspends, based on the transmission timing information included in the CTS packets, any unicast transmission to the second station during the transmission of the data packet from the first station to the second station.
摘要翻译： 用于至少三个站之间的无线数据传输的方法和系统使用多个频带用于同时的信道通信。 该方法包括在第一频带上从第一站向中间第二站发送请求发送（RTS）分组。 两个清除发送（CTS）分组（CTS分组包括发送定时信息）然后同时从第二站发送到第一站和第三站。 发送到第一站的CTS分组在第一频带上发送，并且经由第二频带发送发送到第三站的CTS分组。 然后将来自第一站的数据分组发送到第二站。 在数据包从第一站到第二站的传输期间，第三站基于包括在CTS分组中的传输定时信息暂停到第二站的任何单播传输。
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33.发明授权公开(公告)号：US06947446B2
公开(公告)日：2005-09-20
申请号：US09760981
申请日：2001-01-16
CPC分类号： H04L47/10 , H04L1/0059 , H04L1/007 , H04L1/0083 , H04L1/1628 , H04L1/1809 , H04L1/1812 , H04L1/1829 , H04L47/14 , H04L47/193 , H04L47/24 , H04L2001/0097 , H04W28/06 , H04W74/04
摘要： A slot format and acknowledgment method for use in a communication network that contains one or more wireless links. The slot format provides for the segmenting and reassembly of packets for transport over a wireless link. It also provides support for multiple types of service for the data being carried over the wireless link as well as allocating of access to the wireless link among a plurality of communication units. The acknowledgment method provides for detection of errors over the wireless link, the selective acknowledgment of error-free transmissions and the selective resending of transmissions received in error.
摘要翻译： 一种在包含一个或多个无线链路的通信网络中使用的时隙格式和确认方法。 时隙格式提供用于通过无线链路传输的分组和分组。 它还提供对通过无线链路承载的数据的多种类型的服务的支持以及在多个通信单元之间分配对无线链路的访问。 确认方法提供对无线链路上的错误的检测，无错误传输的选择性确认和错误地接收的传输的选择性重发。
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公开(公告)号：US06721267B2
公开(公告)日：2004-04-13
申请号：US09760984
申请日：2001-01-16
IPC分类号： H04J1100
CPC分类号： H04W99/00 , H04L5/0007 , H04L5/0048 , H04L5/0051 , H04L5/0053 , H04W74/04
摘要： A scalable slot format defining positions of synchronization symbols, pilot symbols and data symbols for various numbers of sub-channels and various lengths of time in a multi-carrier communication system. An initial pattern (500) and one or more follow-on patterns (600, 700) are defined identifying positions of data symbols, synchronization symbols and pilot symbols for a first number of sub-channels corresponding to a first bandwidth. An extended pattern is constructed from the one or more follow-on patterns. The extension pattern is appended to the initial pattern to form a base pattern (810, 910, 1010). The base pattern (810, 910, 1010) is replicated zero or more times to form an expanded pattern (812, 910, 1015) identifying positions of data symbols, synchronization symbols and pilot symbols for an expanded number of sub-channels corresponding to a second bandwidth. The slot format may be implemented by a transmitter (100) having subdivided an original information signal into M bit streams and having encoded each of the M bit streams to 16QAM symbols to form M symbol streams, by inserting synchronization and pilot symbols into each of the M symbol streams at positions determined by the expanded pattern.
摘要翻译： 在多载波通信系统中定义不同数量的子信道和不同时间长度的同步符号，导频符号和数据符号的位置的可扩展时隙格式。 定义初始模式（500）和一个或多个跟随模式（600,700），用于识别对应于第一带宽的第一数量子信道的数据符号，同步符号和导频符号的位置。 从一个或多个后续模式构建扩展模式。 扩展模式被附加到初始模式以形成基本模式（810,910,1010）。 基本模式（810,910,1010）被复制零次或更多次，以形成识别用于扩展数目的子信道对应的数据符号，同步符号和导频符号的位置的扩展模式（812,910,1015） 第二个带宽。 时隙格式可以由已经将原始信息信号细分为M个比特流并已通过将每个M比特流编码为16QAM符号以形成M个符号流来实现，通过将同步和导频符号插入到每个 M符号流在由扩展模式确定的位置处。
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35.发明授权Method and apparatus for performing diversity voting in a communication system 失效在通信系统中执行分集投票的方法和装置
公开(公告)号：US5719871A
公开(公告)日：1998-02-17
申请号：US635105
申请日：1995-04-19
申请人： David P. Helm , Alan L. Wilson , Robert D. LoGalbo
发明人： David P. Helm , Alan L. Wilson , Robert D. LoGalbo
摘要： A communication system (200) employs a method and apparatus for performing diversity voting in the communication system. A comparator (206) receives a signal frame (207-209) of code words from each of multiple signal sources (202-204). A prioritized code word of each signal frame occupies a corresponding frame position and has a respective signal quality metric associated therewith. The comparator determines whether each signal quality metric accurately represents the signal quality of its respective prioritized code word. When the signal quality metrics do not accurately represent the signal qualities of their respective prioritized code words, the comparator determines a supplemental signal quality metric for each prioritized code word. The comparator then selects one prioritized code word from all the corresponding prioritized code words based on a comparison of the supplemental signal quality metrics for input into the corresponding frame position of a voted signal frame (330).
摘要翻译： 通信系统（200）采用在通信系统中执行分集投票的方法和装置。 比较器（206）从多个信号源（202-204）中接收码字的信号帧（207-209）。 每个信号帧的优先码字占据对应的帧位置，并且具有与其相关联的相应的信号质量度量。 比较器确定每个信号质量度量是否精确地表示其相应的优先化码字的信号质量。 当信号质量度量不准确地表示它们各自的优先化码字的信号质量时，比较器确定每个优先化码字的补充信号质量度量。 比较器然后基于用于输入到投票信号帧（330）的相应帧位置的补充信号质量度量的比较，从所有对应的优先化码字中选择一个优先化码字。
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36.发明授权
公开(公告)号：US5517510A
公开(公告)日：1996-05-14
申请号：US382354
申请日：1995-01-31
CPC分类号： H03M13/251 , H03M13/3738 , H04L1/24 , H03M13/1505 , H03M13/19
摘要： An uncorrectable set of input vectors (303), comprising a primary input vector (P) and a secondary set of input vectors (S), is provided at a sender (301). The secondary set of input vectors is error correction encoded and modulated with a predetermined input vector (PIV) to produce a secondary set of modulated vectors (S'). A predetermined codeword (PC) is sent along with the secondary set of modulated vectors to a target (302). At the target, the predetermined codeword is decoded and the resulting decoded predetermined codeword 306 is used to demodulate the secondary set of modulated vectors. As the predetermined codeword is chosen such that, when decoded, it is not identical to the predetermined input vector, the secondary set of demodulated vectors (S") will contain a sufficient number of errors to indicate to the target that the set of input vectors is uncorrectable.
摘要翻译： 在发送器（301）处提供包括主要输入向量（P）和第二组输入向量（S））的不可校正的一组输入向量（303）。 第二组输入矢量用预定的输入矢量（PIV）进行纠错编码和调制，以产生辅助的一组调制矢量（S'）。 将预定码字（PC）与辅助调制向量集合一起发送到目标（302）。 在目标处，对预定的码字进行解码，并且使用所得到的解码的预定码字306来解调第二组调制向量。 当预定的代码字被选择使得当被解码时，它与预定的输入向量不相同，次级解调向量（S“）将包含足够数量的错误，以向目标指示输入的集合 载体是不可校正的。
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公开(公告)号：US08416727B2
公开(公告)日：2013-04-09
申请号：US12183920
申请日：2008-07-31
IPC分类号： H04H20/71
CPC分类号： H04W4/12 , H04L12/185 , H04L12/189 , H04W8/186 , H04W72/005 , H04W80/04 , H04W84/08
摘要： A method and apparatus is provided for communicating a group message packet among wireless communication devices (WCDs) over a wide area communication network that includes a first infrastructure device (ID), a second ID and a third ID. A first communication connection is established between an envoy packet duplicator module (EPDM) that is in communication range of a source wireless communication device (WCD) and a first envoy module implemented at the first ID that is in communication range of a first destination WCD. The EPDM is implemented at the third ID. The source WCD communicates a group message packet from the source WCD to a third envoy module implemented at the third ID, which forwards the group message packet to the EPDM. The EPDM generates a first copy of the group message packet destined for the first destination WCD, and communicates the first copy of the group message packet to the first envoy module.
摘要翻译： 提供了一种用于在包括第一基础设施设备（ID），第二ID和第三ID的广域通信网络上的无线通信设备（WCD）中传送组消息分组的方法和装置。 在源无线通信设备（WCD）的通信范围内的特使分组复制器模块（EPDM）与在第一目的地WCD的通信范围内的第一ID实现的第一特使模块之间建立第一通信连接。 EPDM在第三个ID上实现。 源WCD将来自源WCD的组消息分组传送到在第三ID处实现的第三特使模块，其将组消息分组转发到EPDM。 EPDM生成去往第一目的地WCD的组消息分组的第一副本，并将组消息分组的第一副本传送给第一特使模块。
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公开(公告)号：US20100082829A1
公开(公告)日：2010-04-01
申请号：US12240966
申请日：2008-09-29
IPC分类号： G06F15/16
摘要： A method of operating a peer to facilitate fast group communication between subscribers in a peer-to-peer wide area network is disclosed. In the peer-to-peer wide area network, each of the subscribers are affiliated to a talkgroup, and further registered to at least one peer within the peer-to-peer wide area network. In operation, the peer exchanges messages with other peers to determine that one or more peers listed in a talkgroup topology is still active. When the peer receives a media for a talkgroup from a subscriber affiliated to the talkgroup, the peer duplicates the media for the talkgroup, and unicasts the duplicate media to the one or more peers that are listed as active in the talkgroup topology to enable the one or more peers to deliver the media to the respectively registered subscribers affiliated to the talkgroup.
摘要翻译： 公开了一种操作对等体以促进对等广域网中用户之间的快速组通信的方法。 在对等广域网中，每个用户隶属于一个通话组，并进一步向对等广域网中的至少一个对等体注册。 在操作中，对等体与其他对等体交换消息以确定在通话组拓扑中列出的一个或多个对等方仍然是活动的。 当对等体接收到来自与会话组的用户的通话组的媒体时，对等体复制用于通话组的媒体，并且将该重复媒体单播到在通话组拓扑中被列为活动的一个或多个对等体，以使一个 或更多的对等方将媒体传送到与该会话群组相关联的分别注册的用户。
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公开(公告)号：US20100027453A1
公开(公告)日：2010-02-04
申请号：US12183920
申请日：2008-07-31
IPC分类号： H04H20/71
CPC分类号： H04W4/12 , H04L12/185 , H04L12/189 , H04W8/186 , H04W72/005 , H04W80/04 , H04W84/08
摘要： A method and apparatus is provided for communicating a group message packet among wireless communication devices (WCDs) over a wide area communication network that includes a first infrastructure device (ID), a second ID and a third ID. A first communication connection is established between an envoy packet duplicator module (EPDM) that is in communication range of a source wireless communication device (WCD) and a first envoy module implemented at the first ID that is in communication range of a first destination WCD. The EPDM is implemented at the third ID. The source WCD communicates a group message packet from the source WCD to a third envoy module implemented at the third ID, which forwards the group message packet to the EPDM. The EPDM generates a first copy of the group message packet destined for the first destination WCD, and communicates the first copy of the group message packet to the first envoy module.
摘要翻译： 提供了一种用于在包括第一基础设施设备（ID），第二ID和第三ID的广域通信网络上的无线通信设备（WCD）中传送组消息分组的方法和装置。 在源无线通信设备（WCD）的通信范围内的特使分组复制器模块（EPDM）与在第一目的地WCD的通信范围内的第一ID实现的第一特使模块之间建立第一通信连接。 EPDM在第三个ID上实现。 源WCD将来自源WCD的组消息分组传送到在第三ID处实现的第三特使模块，其将组消息分组转发到EPDM。 EPDM生成去往第一目的地WCD的组消息分组的第一副本，并将组消息分组的第一副本传送给第一特使模块。
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公开(公告)号：US20090144441A1
公开(公告)日：2009-06-04
申请号：US11948121
申请日：2007-11-30
IPC分类号： G06F15/173
CPC分类号： H04L65/4046 , H04W84/10 , H04W92/045
摘要： A method and system for peer to peer wide area network communication is provided. A peer in the network receives one or more media and one or more associated control signaling from any one of a plurality of Logical Media/Control Channels, wherein each Logical Media/Control Channel is associated with a Transport Resource on a base station; formats the media into a Formatted Media Packet; formats the control signaling into an Internet Peer to Peer Control Signaling; concatenates the Formatted Media with the Internet-Peer to Peer Control Signaling to form a Concatenated Packet comprising an Internet-Peer to Peer Control Signaling and a Media Packet; duplicates the Concatenated Packet, thereby forming a duplicated Concatenated Packet comprising at least one of a unicast packet and a multicast packet; and transmits the duplicated Concatenated Packets via the wide area network.
摘要翻译： 提供了一种用于对等广域网通信的方法和系统。 网络中的对等体从多个逻辑媒体/控制信道中的任何一个接收一个或多个媒体和一个或多个相关联的控制信令，其中每个逻辑媒体/控制信道与基站上的传输资源相关联; 将媒体格式化为格式化媒体包; 将控制信令格式化成互联网对等控制信令; 将格式化媒体与互联网对等控制信令连接以形成包括因特网对等控制信令和媒体分组的连接分组; 复制连续分组，从而形成包括单播分组和多播分组中的至少一个的复制连接分组; 并通过广域网传输复制的级联数据包。
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