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公开(公告)号：US20060284725A1
公开(公告)日：2006-12-21
申请号：US11398077
申请日：2006-04-04
申请人： Ayman Naguib , Avneesh Agrawal , Alexei Gorokhov
发明人： Ayman Naguib , Avneesh Agrawal , Alexei Gorokhov
IPC分类号： G08B5/22
CPC分类号： H01Q3/267
摘要： Calibration for a transmit chain of a device transmitting information to multiple devices over wireless links and receive chains of the multiple devices receiving information over one of the wireless links utilizing a plurality of forward link channel estimates received from at least some of the plurality of devices and a plurality of reverse link channel estimates from the plurality of devices.
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公开(公告)号：US20070049218A1
公开(公告)日：2007-03-01
申请号：US11401979
申请日：2006-04-10
CPC分类号： H04L1/0001 , H04B7/0417 , H04B7/063 , H04B7/0639 , H04B7/0663 , H04B7/0689 , H04L1/06 , H04W72/04
摘要： Embodiments are described in connection with enhancing performance in a wireless communication system using codebook technology. According to an embodiment is a method for enhancing performance in a wireless communication environment. The method can include receiving a user preference for a transmission mode, associating the user preference with an entry or entries in a codebook, and assigning the user to a transmission mode corresponding to the entry or entries. The transmission mode can be one of a preceding, space division multiple access (SDMA), SDMA preceding, multiple input multiple output (MIMO), MIMO preceding, MIMO-SDMA and a diversity. Each entry can correspond to a transmission mode.
摘要翻译： 结合增强使用码本技术的无线通信系统中的性能来描述实施例。 根据实施例是用于增强无线通信环境中的性能的方法。 该方法可以包括接收用户对传输模式的偏好，将用户偏好与码本中的条目或条目相关联，并将用户分配给与条目或条目相对应的传输模式。 传输模式可以是先前的空分多址（SDMA），前面的SDMA，多输入多输出（MIMO），先前的MIMO，MIMO-SDMA和分集之一。 每个条目可以对应于传输模式。
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公开(公告)号：US08693405B2
公开(公告)日：2014-04-08
申请号：US11261837
申请日：2005-10-27
IPC分类号： H04B7/00
CPC分类号： H04W72/06 , H04B1/713 , H04B7/026 , H04L5/0023 , H04L5/0037 , H04L5/0044 , H04L5/023
摘要： A method for allocating resources in a wireless communications environment comprises receiving a mapping between a first hop-port and frequency range, and determining whether to map a second access terminal to a second hop-port that is mapped to at least the same frequency range during a substantially similar instance in time, the determination made as a function of characteristics relating to a first access terminal associated with the first hop-port. The method can further include determining that the first access terminal is a candidate for employing Space-Division Multiple Access (SDMA), and mapping the second-hop port and associating the second access terminal with the second hop-port when the second access terminal is also a candidate for employing SDMA.
摘要翻译： 一种用于在无线通信环境中分配资源的方法包括：接收第一跳跃端口和频率范围之间的映射，以及确定是否将第二接入终端映射到映射到至少相同频率范围的第二跳频端口 基本相似的时间实例，根据与与第一跳跃端口相关联的第一接入终端的特性的函数进行确定。 该方法还可以包括确定第一接入终端是采用空分多址（SDMA）的候选者，并且当第二接入终端是第二接入终端时，映射第二跳接口并将第二接入终端与第二跳接口相关联 也是采用SDMA的候选人。
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公开(公告)号：US08638759B2
公开(公告)日：2014-01-28
申请号：US12362289
申请日：2009-01-29
申请人： Tingfang Ji , Avneesh Agrawal , Aamod Khandekar , Alexei Gorokhov
发明人： Tingfang Ji , Avneesh Agrawal , Aamod Khandekar , Alexei Gorokhov
IPC分类号： H04W52/22
CPC分类号： H04W36/0083 , H04W36/20 , H04W36/22 , H04W36/30 , H04W36/36 , H04W48/20 , H04W84/045 , Y02D70/1222 , Y02D70/1242 , Y02D70/1262 , Y02D70/142 , Y02D70/146
摘要： Systems and methodologies are described that facilitate selecting and/or reselecting one or more access points, related cells, or carriers based at least in part on calculating an energy efficiency related to the access points. In particular, the energy efficiency can be based at least in part on an estimated pathloss and/or a level of interference related to communicating with the access points. Moreover, load parameters related to the access point can be received and evaluated in selecting and/or reselecting the access point. Thus, access points can be selected or reselected based on parameters other than forward link transmit power. In addition, pathloss and/or interference levels can be weighed based on access point type to prevent macrocell overloading.
摘要翻译： 描述了至少部分地基于计算与接入点相关的能量效率来促进选择和/或重新选择一个或多个接入点，相关小区或载波的系统和方法。 特别地，能量效率可以至少部分地基于与与接入点通信相关的估计路径损耗和/或干扰水平。 此外，可以在选择和/或重新选择接入点时接收和评估与接入点相关的负载参数。 因此，可以基于除了前向链路发送功率之外的参数来选择或重新选择接入点。 此外，可以基于接入点类型来称量路径损耗和/或干扰电平，以防止宏单元过载。
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公开(公告)号：US08611284B2
公开(公告)日：2013-12-17
申请号：US11370639
申请日：2006-03-07
IPC分类号： H04Q1/00
CPC分类号： H04W72/042 , H04L5/0044 , H04L5/0053 , H04L5/0096 , H04W72/0486
摘要： Systems and methodologies are described that facilitate dynamically supplementing or decrementing resource assignments to mobile devices in a wireless network environment without requiring transmission of replacement assignments. Supplemental assignments can be generated based on information related to mobile device need and resource availability. Moreover, resource assignments can be persisted for a mobile device.
摘要翻译： 描述了促进在无线网络环境中动态地补充或递减对移动设备的资源分配的系统和方法，而不需要传输替换分配。 可以根据与移动设备需求和资源可用性相关的信息生成补充分配。 此外，可以为移动设备持续资源分配。
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公开(公告)号：US20120252468A1
公开(公告)日：2012-10-04
申请号：US13495774
申请日：2012-06-13
申请人： Alexei Gorokhov , Avneesh Agrawal , Naga Bhushan , Tinfang Ji
发明人： Alexei Gorokhov , Avneesh Agrawal , Naga Bhushan , Tinfang Ji
IPC分类号： H04W16/02
CPC分类号： H04W16/04 , H04L1/0026
摘要： Systems and methodologies are described that facilitate employing distributed frequency planning and reuse factor optimization based upon forward link and/or reverse link interference management techniques. An optimal reuse factor for a base station can be determined based upon a metric that evaluates levels of service associated with neighboring base stations. Moreover, a subset of available resource sets can be selected for use by the base station; thus, a base station specific collection of resource sets can be formed through such selection. Further, mappings of each resource set to a set of physical resources can be disseminated in a network or portion thereof. According to another example, frequency hopping can be constrained to use of resources within a resource set (rather than across more than one resource set) as provided in a base station specific hopping pattern.
摘要翻译： 描述了有助于采用基于前向链路和/或反向链路干扰管理技术的分布式频率规划和重用因子优化的系统和方法。 可以基于评估与相邻基站相关联的服务等级的度量来确定基站的最佳重用因子。 此外，可以选择可用资源集的子集供基站使用; 因此，可以通过这样的选择来形成基站特定资源集合。 此外，每个资源集合对一组物理资源的映射可以在网络或其一部分中传播。 根据另一示例，跳频可以被限制为使用资源集合（而不是跨越多于一个资源集合）的资源，如在基站特定跳频模式中所提供的。
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公开(公告)号：US08219030B2
公开(公告)日：2012-07-10
申请号：US12142480
申请日：2008-06-19
申请人： Alexei Gorokhov , Avneesh Agrawal , Naga Bhushan , Tingfang Ji
发明人： Alexei Gorokhov , Avneesh Agrawal , Naga Bhushan , Tingfang Ji
IPC分类号： H04B17/00
CPC分类号： H04W16/04 , H04L1/0026
摘要： Systems and methodologies are described that facilitate employing distributed frequency planning and reuse factor optimization based upon forward link and/or reverse link interference management techniques. An optimal reuse factor for a base station can be determined based upon a metric that evaluates levels of service associated with neighboring base stations. Moreover, a subset of available resource sets can be selected for use by the base station; thus, a base station specific collection of resource sets can be formed through such selection. Further, mappings of each resource set to a set of physical resources can be disseminated in a network or portion thereof. According to another example, frequency hopping can be constrained to use of resources within a resource set (rather than across more than one resource set) as provided in a base station specific hopping pattern.
摘要翻译： 描述了有助于采用基于前向链路和/或反向链路干扰管理技术的分布式频率规划和重用因子优化的系统和方法。 可以基于评估与相邻基站相关联的服务等级的度量来确定基站的最佳重用因子。 此外，可以选择可用资源集的子集供基站使用; 因此，可以通过这样的选择来形成基站特定资源集合。 此外，每个资源集合对一组物理资源的映射可以在网络或其一部分中传播。 根据另一示例，跳频可以被限制为使用资源集合（而不是跨越多于一个资源集合）的资源，如在基站特定跳频模式中所提供的。
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公开(公告)号：US08102923B2
公开(公告)日：2012-01-24
申请号：US11567014
申请日：2006-12-05
IPC分类号： H04B14/04
CPC分类号： H03M13/2945 , H03M13/2903 , H03M13/2948 , H03M13/2978 , H03M13/6362 , H03M13/6513 , H04L1/0041 , H04L1/005 , H04L1/0065 , H04L1/007 , H04L5/023 , H04L2001/0093 , H04N21/2381 , H04N21/2383 , H04N21/2402 , H04N21/2404 , H04N21/2405 , H04N21/6405 , H04N21/6408
摘要： Techniques for sending signaling information using hierarchical coding are described. With hierarchical coding, individual messages for users are encoded using multiple interconnected encoders such that (1) the message for each user is sent at a data rate suitable for that user and (2) a single multicast message is generated for the messages for all users. A base station determines data rates supported by the users and the code rates to achieve these data rates. Each data rate is determined by one or more code rates. Signaling information for the users is mapped to data blocks to be sent at different data rates. Each data block is then encoded in accordance with the code rate(s) associated with the data rate for that data block. A final coded block is generated for all users and transmitted. Each user performs the complementary decoding to recover the message sent to that user.
摘要翻译： 描述使用分层编码发送信令信息的技术。 使用分层编码，使用多个互连的编码器对用户的各个消息进行编码，使得（1）以适合于该用户的数据速率发送每个用户的消息，以及（2）为所有用户生成消息的单个多播消息 。 基站确定用户支持的数据速率和码率来实现这些数据速率。 每个数据速率由一个或多个码率决定。 将用户的信令信息映射到以不同数据速率发送的数据块。 然后根据与该数据块的数据速率相关联的码率对每个数据块进行编码。 为所有用户生成最终编码块并进行传输。 每个用户执行补充解码以恢复发送给该用户的消息。
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89.发明授权Iterative channel and interference estimation with dedicated pilot tones for OFDMA 有权用于OFDMA的专用导频音的迭代信道和干扰估计公开(公告)号：US07830976B2
公开(公告)日：2010-11-09
申请号：US11182235
申请日：2005-07-15
IPC分类号： H04B7/02
CPC分类号： H04L25/0236 , H04L5/0007 , H04L5/0048 , H04L5/023 , H04L25/0248 , H04L27/2647
摘要： Estimation of channel characteristics and interference level in a time-varying multi-carrier multi-user systems is carried out concurrently. To perform the estimation, a multitude of data symbols and dedicated pilot symbols are transmitted over the channel. Next, an initial estimate value is selected for the interference level. The initial estimate value for the interference level is used together with the received pilot symbols to provide a first estimate of the channel. The first estimate of the channel is used to determine a new updated value for the interference level, which in turn, is used to update the value of the first estimate of the channel iteratively. The iterations continue until the iteratively updated values of the interference level and channel satisfy predefined limits. The data symbols and the final updated value of the channel are subsequently used to provide a second estimate for the channel.
摘要翻译： 并行执行时变多载波多用户系统中的信道特性和干扰电平的估计。 为了执行估计，通过信道发送多个数据符号和专用导频符号。 接下来，针对干扰电平选择初始估计值。 干扰电平的初始估计值与接收到的导频符号一起使用以提供信道的第一估计。 信道的第一估计用于确定用于干扰电平的新的更新值，其又用于迭代地更新信道的第一估计值。 迭代继续，直到干扰电平和通道的迭代更新值满足预定义的限制。 随后使用数据符号和信道的最终更新值来提供信道的第二估计。
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90.发明授权公开(公告)号：US07706350B2
公开(公告)日：2010-04-27
申请号：US11022514
申请日：2004-12-22
申请人： Alexei Gorokhov , Avneesh Agrawal
发明人： Alexei Gorokhov , Avneesh Agrawal
IPC分类号： H04B7/208
CPC分类号： H04L5/0046 , H04L5/0007 , H04L5/0037 , H04L5/0042 , H04L5/06
摘要： The disclosed embodiments provide for methods and systems for flexibly allocating a shared frequency spectrum to a plurality of users, the spectrum may have a first number of segments, each segment having a second number of clusters associated with a certain sector/cell. In one aspect, a method for flexibly allocating a shared frequency spectrum to a plurality of users comprises the acts of fixedly assigning a first group of clusters to a first group of users, such that the first group of users stay fixed to the assigned clusters, and assigning a second group of clusters to a second group of users, such that the second group of users hop within the assigned clusters.
摘要翻译： 所公开的实施例提供了用于向多个用户灵活地分配共享频谱的方法和系统，频谱可以具有第一数量的段，每个段具有与特定扇区/小区相关联的第二数量的簇。 一方面，一种用于向多个用户灵活地分配共享频谱的方法包括将第一组群固定地分配给第一组用户的动作，使得第一组用户保持固定到所分配的群， 以及将第二组群集分配给第二组用户，使得所述第二组用户在所分配的群集内跳转。
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