公开(公告)号：US5809043A

公开(公告)日：1998-09-15

申请号：US727736

申请日：1996-10-08

申请人： Amer A. Hassan ,  Ali S. Khayrallah ,  Harro Osthoff

发明人： Amer A. Hassan ,  Ali S. Khayrallah ,  Harro Osthoff

IPC分类号： H03M13/37 ,  H03M7/00 ,  H03M13/00 ,  H03M13/05 ,  H03M13/39 ,  H03M13/45 ,  H04L27/00

CPC分类号： H03M13/3944 ,  H03M13/05 ,  H03M13/3707 ,  H03M13/3723 ,  H03M13/6325

摘要： A decoding system processes a received vector r to produce a soft symbol information vector output s including a reliability value for each received code symbol. From the reliability values, clusters of symbols within the received vector r having low reliability are identified and detected. Responsive thereto, the received vector r is permuted to scatter the low reliability symbols within each detected low reliability cluster throughout a given codeword. A decoding generator matrix G is also correspondingly permuted is response to the detection of low reliability clusters of symbols. Utilizing a trellis obtained from the permuted decoding generator matrix G', the permuted received vector r' is then sequentially or otherwise suboptimally decoded.

摘要翻译： 解码系统处理接收的矢量r以产生包括每个接收的码元的可靠性值的软符号信息矢量输出s。 从可靠性值中，识别并检测具有低可靠性的接收矢量r内的符号簇。 响应于此，接收的向量r被置换以在每个检测到的低可靠性集群内的整个给定码字中散布低可靠性符号。 解码产生器矩阵G也被相应地置换为对低可靠性符号簇的检测的响应。 利用从置换的解码产生器矩阵G'获得的网格，然后顺序地或以其它方式被次优解码的置换的接收向量r'。

公开(公告)号：US5968198A

公开(公告)日：1999-10-19

申请号：US699101

申请日：1996-08-16

申请人： Amer A. Hassan ,  Ali S. Khayrallah ,  Yi-Pin Eric Wang ,  Kumar Balachandran ,  Rajaram Ramesh

发明人： Amer A. Hassan ,  Ali S. Khayrallah ,  Yi-Pin Eric Wang ,  Kumar Balachandran ,  Rajaram Ramesh

IPC分类号： H04L1/00 ,  H03M13/09 ,  H03M13/13 ,  H03M13/15 ,  H03M13/29 ,  H03M13/37 ,  H03M13/45 ,  H04L1/16 ,  H04L1/18 ,  H04L25/06 ,  H03M13/00

CPC分类号： H04L25/067 ,  H03M13/13 ,  H03M13/27 ,  H03M13/2906 ,  H03M13/2933 ,  H03M13/3738 ,  H03M13/456 ,  H03M13/6306 ,  H04L1/0065 ,  H04L1/0071 ,  H03M13/09 ,  H03M13/6331 ,  H04L1/1809 ,  H04L1/1816

摘要： A coding system is disclosed wherein the receive side includes a decoder capable of producing, in addition to the hard information decoded output, either or both symbol and/or bit soft information values. For a certain information bit position, a value proportional to the joint probability that a received symbol and the set of all hypothesized transmitted codewords that led to the estimated or detected hard information output is calculated. The calculated probabilities with respect to plural codewords having a zero in that certain information bit position are compared to the calculated probabilities with respect to the plural codewords having a one in that certain information bit position. The result of the comparison provides an indication of whether the hard information output in that same information bit position is more likely a one or a zero. The output soft information values are further processed in comparison to a preset threshold, with instances exceeding the threshold triggering block rejections and/or retransmissions.

摘要翻译： 公开了一种编码系统，其中接收端包括能够产生除硬信息解码输出之外的符号和/或位软信息值之一或两者的解码器。 对于某个信息位位置，计算与接收到的符号和导致估计或检测到的硬信息输出的所有假设的发送码字的集合的联合概率成比例的值。 将具有该特定信息位位置的零的多个码字的计算概率与该特定信息位位置中具有一个的多个码字的计算概率进行比较。 比较结果提供了在该相同信息位位置中的硬信息输出是否更可能是一个或零的指示。 与预设阈值相比，输出软信息值进一步处理，其中实例超过阈值触发块拒绝和/或重传。

公开(公告)号：US5983385A

公开(公告)日：1999-11-09

申请号：US911412

申请日：1997-08-14

申请人： Ali S. Khayrallah ,  Amer A. Hassan

发明人： Ali S. Khayrallah ,  Amer A. Hassan

IPC分类号： H03M13/29 ,  H04L1/00 ,  H03M13/12 ,  H03M13/22

CPC分类号： H04L1/0059 ,  H03M13/2903 ,  H03M13/2939 ,  H03M13/2948 ,  H03M13/3983 ,  H03M13/6561 ,  H04L1/0051 ,  H04L1/0054 ,  H04L1/0066 ,  H04L1/0071

摘要： A source sequence of information symbols is encoded according to each of a plurality of codes to produce a plurality of encoded sequences of symbols, a respective one of the plurality of codes producing a respective one of the plurality of encoded sequences of symbols from the source sequence of information symbols. The plurality of encoded sequences of symbols are combined to produce a sequence of communications symbols. The sequence of communications symbols is processed to produce a communications signal which is then communicated over a communications medium. The communicated communications signal is processed to produce an estimate of the source sequence of information symbols. The source sequence is preferably encoded according to a first error correction code to produce a first encoded sequence of symbols, and encoded according to a second error correction code to produce a second encoded sequence of symbols. The first and second encoded sequences of symbols preferably are multiplexed to produce the sequence of communications symbols. The first error correction code preferably comprises a random error correction code such as a binary convolutional code, while the second error correction code preferably comprises a burst error correction code, for example, a nonbinary convolutional code such as a dual-k convolutional code, thereby providing random and burst error correction capability.

摘要翻译： 信息符号的源序列根据多个代码中的每一个被编码以产生多个编码符号序列，所述多个代码中的相应一个代码从源序列产生多个编码符号序列中的相应一个 的信息符号。 多个编码的符号序列被组合以产生通信符号序列。 处理通信符号的序列以产生通信信号，然后通信信号通过通信介质进行通信。 所传送的通信信号被处理以产生信息符号的源序列的估计。 源序列优选地根据第一纠错码被编码以产生第一编码符号序列，并且根据第二纠错码被编码以产生第二编码符号序列。 第一和第二编码符号序列优选被多路复用以产生通信符号序列。 第一纠错码优选地包括诸如二进制卷积码的随机纠错码，而第二纠错码优选地包括脉冲串纠错码，例如诸如双k卷积码的非二进卷积码，由此 提供随机和突发纠错能力。

公开(公告)号：US09544777B2

公开(公告)日：2017-01-10

申请号：US13564727

申请日：2012-08-02

申请人： Amer A. Hassan ,  Daniel A. Reed ,  Paul W. Garnett ,  Billy Anders

发明人： Amer A. Hassan ,  Daniel A. Reed ,  Paul W. Garnett ,  Billy Anders

IPC分类号： H04W16/14 ,  H04W64/00 ,  H04W76/02 ,  H04W72/04 ,  H04W74/00 ,  H04W4/02 ,  H04W12/08

CPC分类号： H04W16/14 ,  H04W4/025 ,  H04W12/08 ,  H04W64/00 ,  H04W72/044 ,  H04W74/002 ,  H04W76/14

摘要： The concepts relate to broadcasting white space utilization. One example can interact with a wireless device that is configured to obtain authorization to use a set of radio white space frequencies in accordance with one or more constraints. The example can obtain an individual radio white space frequency and associated individual constraints. This example can also utilize the individual radio white space frequency for network access independent from the wireless device that is configured to obtain the authorization.

摘要翻译： 这些概念涉及广播空白利用。 一个示例可以与被配置为根据一个或多个约束获得使用一组无线电空白频率的授权的无线设备进行交互。 该示例可以获得单个无线电空间频率和相关联的个体约束。 该示例还可以独立于被配置为获得授权的无线设备来利用单独的无线电空白频率进行网络接入。

公开(公告)号：US09294545B2

公开(公告)日：2016-03-22

申请号：US12970069

申请日：2010-12-16

申请人： Mitesh K. Desai ,  Amer A. Hassan ,  Mukund Sankaranarayan ,  Henrique Filgueiras

发明人： Mitesh K. Desai ,  Amer A. Hassan ,  Mukund Sankaranarayan ,  Henrique Filgueiras

IPC分类号： H04L29/08

CPC分类号： H04L67/04 ,  H04L67/1046 ,  H04L67/1051 ,  H04L67/1093 ,  H04W8/005 ,  H04W76/12 ,  H04W76/14 ,  H04W84/12 ,  Y02D30/40 ,  Y02D70/00

摘要： A wireless peer-to-peer protocol that supports fast and low power joining to an existing group. The protocol may be an extension of a peer-to-peer protocol that supports a sleep state for a device controlling the group. When a device is seeking to join a group at a time when the controlling device is in a sleep state, another device that has information about the controlling device may provide information to the joining device that may then be used by the joining device to more quickly, and using less power, synchronize with the controlling device. The information may include information about a channel used by the controlling device or about timing of availability of the controlling device. The information may also reveal whether the group provides a service being sought by the joining device or may otherwise influence whether the joining device will attempt to join a group.

摘要翻译： 支持快速和低功率加入现有组的无线对等协议。 该协议可以是支持用于控制该组的设备的睡眠状态的对等协议的扩展。 当设备正在寻求在控制设备处于睡眠状态时加入组时，具有关于控制设备的信息的另一设备可以向加入设备提供信息，然后可以由加入设备更快地使用该信息 并且使用较少的功率，与控制设备同步。 信息可以包括关于控制设备使用的信道或关于控制设备的可用性的定时的信息。 该信息还可以显示该组是否提供正在由加入设备寻求的服务，或者否则会影响加入设备是否将尝试加入组。

公开(公告)号：US09112645B2

公开(公告)日：2015-08-18

申请号：US11801785

申请日：2007-05-11

申请人： Amer A. Hassan ,  Bernard D. Aboba ,  Kun Tan ,  Jiansong Zhang

发明人： Amer A. Hassan ,  Bernard D. Aboba ,  Kun Tan ,  Jiansong Zhang

IPC分类号： G06F11/00 ,  H04L1/00 ,  H04L1/20

CPC分类号： H04L1/002 ,  H04L1/0002 ,  H04L1/0009 ,  H04L1/0021 ,  H04L1/203

摘要： A computing device configured for wireless communication may effectively control adaptation to channel conditions. The device may be configured to identify and classify conditions impacting performance of a channel so that appropriate adaptations may be made. Interference may be detected by correlating received signal strength and packet errors. High received signal strength correlated to a high packet error rate may signify presence of a source of interference. Once a source of interference is detected, other criteria may be used to determine the nature of the interference so that an adaptation that is minimally disruptive of applications can be selected. Additionally, channel degradation may be predicted by monitoring trends in error rates, including Forward Error Correction rates, and adaptation may be used before packet error rates exceed an unacceptable level.

摘要翻译： 配置用于无线通信的计算设备可以有效地控制对信道条件的适配。 该设备可以被配置为识别和分类影响信道性能的条件，以便进行适当的调整。 可以通过将接收的信号强度和分组错误相关联来检测干扰。 与高分组错误率相关的高接收信号强度可能意味着存在干扰源。 一旦检测到干扰源，可以使用其他标准来确定干扰的性质，从而可以选择最小程度地破坏应用的适配。 另外，可以通过监视错误率的趋势（包括前向纠错率）来预测信道恶化，并且可以在分组错误率超过不可接受的水平之前使用适配。

公开(公告)号：US09109903B2

公开(公告)日：2015-08-18

申请号：US11973590

申请日：2007-10-09

申请人： Deyun Wu ,  Thomas W. Kuehnel ,  Amer A. Hassan ,  Yi Lu ,  Hui Shen ,  Sundar P. Subramani ,  Vinod K. Swamy

发明人： Deyun Wu ,  Thomas W. Kuehnel ,  Amer A. Hassan ,  Yi Lu ,  Hui Shen ,  Sundar P. Subramani ,  Vinod K. Swamy

IPC分类号： H04W24/00 ,  G01C21/20 ,  H04W64/00

CPC分类号： H04W64/003 ,  G01C21/20 ,  H04W4/02

摘要： A wireless access point in a wireless network that may be adapted to transmit location data indicating its location to other devices within range, including other wireless access points and client devices. In some embodiments of the invention, the location data may be embedded in a control message or announcement transmission transmitted by the wireless access point, or other message conventionally used to broadcast network characteristics necessary for a client device to establish a connection to the wireless access point. In terms of the Open Systems Interconnect (OSI) layered model of a network, layer 2 control messages, including beacons, probe responses, or other suitable transmissions may be used for control messages or announcement transmissions. The other wireless access points and client devices may receive the location data broadcast by the wireless access point without establishing a connection to the client device. Devices receiving the location data may use the received location data to determine their own locations, and may provide the determined locations to consumers of location data.

公开(公告)号：US09094834B2

公开(公告)日：2015-07-28

申请号：US13609271

申请日：2012-09-11

申请人： Amer A. Hassan ,  Daniel A. Reed ,  Paul W. Garnett ,  Billy Anders

发明人： Amer A. Hassan ,  Daniel A. Reed ,  Paul W. Garnett ,  Billy Anders

IPC分类号： H04B17/00 ,  H04W16/14 ,  H04W24/00

CPC分类号： H04W72/0453 ,  H04B17/318 ,  H04B17/382 ,  H04L27/0006 ,  H04W16/14 ,  H04W24/00 ,  H04W64/00 ,  H04W72/082

摘要： The concepts relate to radio white space utilization. One example can measure a potential radio white space frequency. The example can also communicate results of the measuring for other devices and receive other results from the other devices relating to the potential radio white space frequency. The method can further determine whether the potential radio white space frequency is actually an available radio white space frequency based upon the results and the other results.

摘要翻译： 这些概念涉及无线电空间利用。 一个例子可以测量潜在的无线电空间频率。 该示例还可以传送其他设备的测量结果，并从与潜在无线电空白频率相关的其他设备接收其他结果。 该方法可以基于结果和其他结果进一步确定潜在的无线电空间频率是否实际上是可用的无线电空格频率。

公开(公告)号：US09019878B2

公开(公告)日：2015-04-28

申请号：US13160259

申请日：2011-06-14

申请人： Billy R. Anders, Jr. ,  Dennis Flanagan ,  Amer A. Hassan ,  Yatharth Gupta

发明人： Billy R. Anders, Jr. ,  Dennis Flanagan ,  Amer A. Hassan ,  Yatharth Gupta

IPC分类号： H04W48/20 ,  H04W76/02 ,  H04W52/02 ,  H04W84/18 ,  H04W88/04 ,  H04W88/06

CPC分类号： H04W76/023 ,  H04W48/20 ,  H04W52/02 ,  H04W76/14 ,  H04W84/18 ,  H04W88/04 ,  H04W88/06 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/22

摘要： A mechanism for a wireless device to obtain access to network connectivity through a WAN-enabled device. The wireless device may use peer-to-peer communication to request the WAN-enabled device enter a mode in which it serves as an access point to its WAN. The wireless device may then associate with the WAN-enabled device in its role as an access point to access connectivity services. Such a capability may be used, for example, to allow a wireless computing device to gain access to the Internet through a smartphone or other device that has Internet access, and can also be configured to communicate in accordance with the Wi-Fi and Wi-Fi Direct standards.

摘要翻译： 用于无线设备通过启用WAN的设备获取对网络连接的访问​​机制。 无线设备可以使用对等通信来请求启用WAN的设备进入其作为其WAN的接入点的模式。 然后，无线设备可以以其作为接入点的角色与启用WAN的设备相关联，以访问连接服务。 这样的能力可以用于例如允许无线计算设备通过具有因特网接入的智能电话或其他设备来访问因特网，并且还可以被配置为根据Wi-Fi和Wi- Fi直接标准。

公开(公告)号：US08776187B2

公开(公告)日：2014-07-08

申请号：US11490659

申请日：2006-07-21

申请人： Amer A. Hassan ,  Andrew Baron ,  Christian Huitema ,  Deyun Wu ,  Mahmood H. Khadeer ,  Vishesh M. Parikh ,  Wajih Yahyaoui

发明人： Amer A. Hassan ,  Andrew Baron ,  Christian Huitema ,  Deyun Wu ,  Mahmood H. Khadeer ,  Vishesh M. Parikh ,  Wajih Yahyaoui

IPC分类号： G06F15/16

CPC分类号： H04L63/0853 ,  H04L63/104 ,  H04W12/04 ,  H04W12/08

摘要： Guest user are enabled to access network resources through an enterprise network using a guest user account. A guest user account may be created for a guest for a limited time. Guest account credentials of the guest account may be provided to the guest to use the guest account using any of a variety of techniques described herein, for example, by scanning a guest access card, credit card or mobile telephone of guest user, and providing the guest account credentials to the user based on the information obtained. A guest access management server may be configured to generate and maintain guest accounts, authenticate guest users, and track and log guest activity. A VLAN technology may be used to separate guest traffic from host enterprise traffic on the host enterprise network. After a guest user is authenticated, communications to and from the guest user may be routed to a guest VLAN.

摘要翻译： 访客用户启用访问用户帐户通过企业网络访问网络资源。 可以在有限的时间内为访客创建访客用户帐户。 访客帐户的访客帐户凭证可以被提供给访客以使用本文描述的各种技术中的任何一种使用客户账户，例如通过扫描访客用户的访客访问卡，信用卡或移动电话，并且提供 基于获取的信息向用户提供客户帐户凭据。 访客访问管理服务器可以被配置为生成和维护访客帐户，验证访客用户以及跟踪和记录访客活动。 可以使用VLAN技术将客户流量与主机企业网络上的主机企业流量进行分离。 在访客用户被认证之后，与来宾用户的通信可以被路由到来宾VLAN。