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公开(公告)号：US08818285B2
公开(公告)日：2014-08-26
申请号：US12262022
申请日：2008-10-30
申请人： Mohammad J. Borran , Aamod Khandekar , Naga Bhushan , Ashwin Sampath , Alexei Gorokhov , Avneesh Agrawal , Ravi Palanki , Gavin B. Horn
发明人： Mohammad J. Borran , Aamod Khandekar , Naga Bhushan , Ashwin Sampath , Alexei Gorokhov , Avneesh Agrawal , Ravi Palanki , Gavin B. Horn
CPC分类号： H04W72/048 , H04W52/242 , H04W52/243 , H04W52/28 , H04W52/325 , H04W52/34
摘要： Techniques for transmitting data with short-term interference mitigation in a wireless communication system are described. In one design, a first station (e.g., a base station or a terminal) may receive a message sent by a second station to request reduction of interference on at least one resource. In response to receiving the message, the first station may determine a first transmit power level to use for the at least one resource based on one or more factors such as a priority metric sent in the message, the buffer size at the first station, etc. The first station may send a power decision pilot on the at least one resource at a second transmit power level determined based on the first transmit power level.
摘要翻译： 描述了在无线通信系统中发送具有短期干扰抑制的数据的技术。 在一种设计中，第一站（例如，基站或终端）可以接收由第二站发送的消息以请求减少对至少一个资源的干扰。 响应于接收到消息，第一站可以基于一个或多个因素来确定用于至少一个资源的第一发射功率电平，诸如消息中发送的优先级度量，第一站的缓冲器大小等 第一站可以基于第一发射功率电平确定的第二发射功率电平在所述至少一个资源上发送功率决定导频。
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公开(公告)号：US08588054B2
公开(公告)日：2013-11-19
申请号：US11924351
申请日：2007-10-25
申请人： Aamod Khandekar , Alexei Gorokhov , Naga Bhushan
发明人： Aamod Khandekar , Alexei Gorokhov , Naga Bhushan
IPC分类号： H04J11/00
CPC分类号： H04W52/04 , H04B17/309 , H04B17/345 , H04L5/0007 , H04L5/0048
摘要： Systems and methodologies are described that facilitate silence interval specification and utilization in wireless communications. In particular, a silence interval can be defined such that communications cease during the interval, defined by an interval period, offset within the interval period, and duration; the communication can be that of mobile devices to base stations in a wireless communication network. In this regard, base stations can measure thermal noise during the silence to set a interference over thermal (IoT) level in one example. Additionally, other systems and networks can use the silence intervals to transmit, such as public safety devices and/or peer-to-peer communication. The wireless mobile devices can receive the silence interval information and appropriately blank out communications during the defined period.
摘要翻译： 描述了促进无线通信中的静默间隔规范和利用的系统和方法。 特别地，可以定义静默间隔，使得在间隔期间通信停止，由间隔周期定义，在间隔周期内偏移和持续时间; 通信可以是移动设备到无线通信网络中的基站的通信。 在这方面，在一个例子中，基站可以在沉默期间测量热噪声以设定热（IoT）水平的干扰。 此外，其他系统和网络可以使用静默间隔进行传输，例如公共安全设备和/或对等通信。 无线移动设备可以在定义的周期内接收静默间隔信息并适当地消除通信。
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公开(公告)号：US20120218943A1
公开(公告)日：2012-08-30
申请号：US13465943
申请日：2012-05-07
申请人： Aamod Khandekar , Alexei Gorokhov , Naga Bhushan , Sandip Sarkar , Ravi Palanki
发明人： Aamod Khandekar , Alexei Gorokhov , Naga Bhushan , Sandip Sarkar , Ravi Palanki
IPC分类号： H04W48/12
CPC分类号： H04W72/04 , H04B1/713 , H04B7/2621 , H04L1/1692 , H04L5/0053 , H04W52/146 , H04W52/16 , H04W52/243 , H04W52/247 , H04W52/362 , H04W52/60 , H04W72/08
摘要： Techniques for sending control information in a wireless communication system are described. A control segment may include L≧1 tiles, and each tile may include a number of transmission units. A number of control resources may be defined and mapped to the transmission units for the control segment. For symmetric mapping, multiple sets of S≧1 control resources may be formed, and each batch of L consecutive sets of S control resources may be mapped to S transmission units at the same location in the L tiles. For localized mapping, S>1, and each set of S control resources may be mapped to a cluster of S adjacent transmission units in one tile. For distributed mapping, S=1, and each control resource may be mapped to one transmission unit in one tile. For diversity, each control resource may be mapped to multiple (e.g., three) transmission units in at least one tile.
摘要翻译： 描述用于在无线通信系统中发送控制信息的技术。 控制段可以包括L≥1瓦片，并且每个瓦片可以包括多个传输单元。 可以将多个控制资源定义并映射到控制段的传输单元。 对于对称映射，可以形成多组S≥1个控制资源，并且每L批连续的S个控制资源组可以被映射到L个瓦片中相同位置处的S个传输单元。 对于局部映射，S> 1，并且每组S个控制资源可以被映射到一个瓦片中的S个相邻传输单元的簇。 对于分布式映射，S = 1，并且每个控制资源可以映射到一个瓦片中的一个传输单元。 对于分集，每个控制资源可以映射到至少一个瓦片中的多个（例如，三个）传输单元。
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公开(公告)号：US20090203385A1
公开(公告)日：2009-08-13
申请号：US12260834
申请日：2008-10-29
IPC分类号： H04W72/04
摘要： Providing fairness-based metrics for managing inter-sector interference of a mobile AN is described herein. By way of example, accumulation of resource utilization messages (RUMs) at a sector of the mobile AN can be based at least in part on a performance metric of that sector as compared with one or more neighboring sectors. In at least one aspect, performance metrics of multiple sectors of the mobile AN can be aggregated and a RUM accumulation rate of each sector is determined based on the aggregated metric. Accumulation rates can further be updated periodically as sector and/or aggregated metrics of the mobile AN change. Accordingly, accumulation and utilization of RUMs is based on inter-sector fairness to optimize overall wireless communication quality of service for the mobile AN.
摘要翻译： 本文描述了提供用于管理移动AN的扇区间干扰的基于公平的度量。 作为示例，移动AN的扇区处的资源利用消息（RUM）的累积可以至少部分地基于与一个或多个相邻扇区相比该扇区的性能度量。 在至少一个方面，可以聚合移动AN的多个扇区的性能度量，并且基于聚合度量确定每个扇区的RUM累积速率。 随着移动AN的扇区和/或聚合度量的变化，累积率可以进一步定期更新。 因此，RUM的积累和利用基于跨部门公平性来优化移动AN的整体无线通信服务质量。
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公开(公告)号：US20090197590A1
公开(公告)日：2009-08-06
申请号：US12261998
申请日：2008-10-30
申请人： Mohammad J. Borran , Aamod Khandekar , Naga Bhushan , Ashwin Sampath , Alexei Gorokhov , Avneesh Agrawal , Ravi Palanki , Gavin B. Horn
发明人： Mohammad J. Borran , Aamod Khandekar , Naga Bhushan , Ashwin Sampath , Alexei Gorokhov , Avneesh Agrawal , Ravi Palanki , Gavin B. Horn
CPC分类号： H04W72/048 , H04W52/242 , H04W52/243 , H04W52/28 , H04W52/325 , H04W52/34
摘要： Techniques for transmitting data with short-term interference mitigation in a wireless communication system are described. In one design, a serving base station may send a message to a terminal to trigger short-term interference mitigation. In response, the terminal may send a message to request at least one interfering base station to reduce interference on at least one resource. Each interfering base station may determine a transmit power level to be used for the at least one resource and may send a pilot at this transmit power level. The terminal may estimate the channel quality of the at least one resource based on at least one pilot received from the at least one interfering base station. The terminal may send information indicative of the estimated channel quality to the serving base station. The serving base station may send a data transmission on the at least one resource to the terminal.
摘要翻译： 描述了在无线通信系统中发送具有短期干扰抑制的数据的技术。 在一种设计中，服务基站可以向终端发送消息以触发短期干扰减轻。 作为响应，终端可以发送消息以请求至少一个干扰基站以减少对至少一个资源的干扰。 每个干扰基站可以确定要用于至少一个资源的发射功率电平，并且可以以该发射功率电平发送导频。 终端可以基于从至少一个干扰基站接收的至少一个导频来估计至少一个资源的信道质量。 终端可以向服务基站发送表示估计的信道质量的信息。 服务基站可以向终端发送至少一个资源上的数据传输。
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公开(公告)号：US20090197538A1
公开(公告)日：2009-08-06
申请号：US12262013
申请日：2008-10-30
申请人： Mohammad J. Borran , Aamod Khandekar , Naga Bhushan , Ashwin Sampath , Alexei Gorokhov , Avneesh Agrawal , Ravi Palanki , Gavin B. Horn
发明人： Mohammad J. Borran , Aamod Khandekar , Naga Bhushan , Ashwin Sampath , Alexei Gorokhov , Avneesh Agrawal , Ravi Palanki , Gavin B. Horn
IPC分类号： H04B1/00
CPC分类号： H04W52/243 , H04B7/0617 , H04B17/382 , H04W52/247
摘要： Techniques for transmitting data with short-term interference mitigation in a wireless communication system are described. In one design, a first station (e.g., a base station or a terminal) may send a first message to at least one interfering station to request reduction of interference on at least one resource. The first station may send the first message in anticipation of receiving data on the at least one resource. An interfering station may receive the first message from the first station and may reduce interference on the at least one resource by reducing its transmit power and/or by steering its power in a direction different from the first station. The first station may thereafter receive data from a second station on the at least one resource. The techniques may be used for data transmission on the forward and reverse links.
摘要翻译： 描述了在无线通信系统中发送具有短期干扰抑制的数据的技术。 在一种设计中，第一站（例如，基站或终端）可以向至少一个干扰站发送第一消息，以请求减少对至少一个资源的干扰。 第一站可以发送第一消息以预期在至少一个资源上接收数据。 干扰站可以从第一站接收第一消息，并且可以通过减少其发射功率和/或通过在与第一站不同的方向上转向其功率来减少对至少一个资源的干扰。 此后，第一站可以在至少一个资源上从第二站接收数据。 这些技术可以用于前向和反向链路上的数据传输。
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公开(公告)号：US20100027486A1
公开(公告)日：2010-02-04
申请号：US12446679
申请日：2007-10-24
IPC分类号： H04W72/12
CPC分类号： H04B1/7075 , H04B2201/70701
摘要： System(s) and method(s) are provided to facilitate generating and processing acquisition pilots in wireless communications. Acquisition pilots that convey timing and frequency synchronization information, wireless system acquisition and system determination information are modulated with pseudorandom sequences. The R bits of information carried by the acquisition pilot that conveys system determination information are augmented with T bits that convey a counter index associated with the system timing of superframes transmitted from an access point. The processing overhead resulting from the addition of the T bits is offset by the advantages afforded to a wireless communication. Salient advantages include: (i) processing gain at a receiver for communication in a specific sector during asynchronous operation, (ii) packet boundary determination through the counter field values, and (iii) initialization of various pseudorandom registers employed for communication.
摘要翻译： 提供系统和方法以便于在无线通信中生成和处理采集导频。 采用伪随机序列调制传送定时和频率同步信息的采集导频，无线系统采集和系统确定信息。 传送系统确定信息的采集导频携带的R位的信息用传递与从接入点发送的超帧的系统定时相关联的计数器索引的T比特来增大。 由于添加T位而产生的处理开销被提供给无线通信的优点所抵消。 显着的优点包括：（i）在异步操作期间处理在特定扇区中的通信处理增益，（ii）通过计数器字段值确定分组边界，以及（iii）用于通信的各种伪随机寄存器的初始化。
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公开(公告)号：US09203466B2
公开(公告)日：2015-12-01
申请号：US12446679
申请日：2007-10-24
IPC分类号： H04W4/00 , H04B1/7075
CPC分类号： H04B1/7075 , H04B2201/70701
摘要： System(s) and method(s) are provided to facilitate generating and processing acquisition pilots in wireless communications. Acquisition pilots that convey timing and frequency synchronization information, wireless system acquisition and system determination information are modulated with pseudorandom sequences. The R bits of information carried by the acquisition pilot that conveys system determination information are augmented with T bits that convey a counter index associated with the system timing of superframes transmitted from an access point. The processing overhead resulting from the addition of the T bits is offset by the advantages afforded to a wireless communication. Salient advantages include: (i) processing gain at a receiver for communication in a specific sector during asynchronous operation, (ii) packet boundary determination through the counter field values, and (iii) initialization of various pseudorandom registers employed for communication.
摘要翻译： 提供系统和方法以便于在无线通信中生成和处理采集导频。 采用伪随机序列调制传送定时和频率同步信息的采集导频，无线系统采集和系统确定信息。 传送系统确定信息的采集导频携带的R位的信息用传递与从接入点发送的超帧的系统定时相关联的计数器索引的T比特来增大。 由于添加T位而产生的处理开销被提供给无线通信的优点所抵消。 显着的优点包括：（i）在异步操作期间处理在特定扇区中的通信处理增益，（ii）通过计数器字段值确定分组边界，以及（iii）用于通信的各种伪随机寄存器的初始化。
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49.发明授权公开(公告)号：US09860033B2
公开(公告)日：2018-01-02
申请号：US13271113
申请日：2011-10-11
IPC分类号： H04L5/00 , H04L27/26 , H04B7/04 , H04B7/06 , H04B7/0456
CPC分类号： H04L5/0023 , H04B7/0456 , H04B7/061 , H04B7/0671 , H04B7/0691 , H04B7/0697 , H04L27/2602
摘要： Transmission schemes that can flexibly achieve the desired spatial multiplexing order, spatial diversity order, and channel estimation overhead order are described. For data transmission, the assigned subcarriers and spatial multiplexing order (M) for a receiver are determined, where M≧1. For each assigned subcarrier, M virtual antennas are selected from among V virtual antennas formed with V columns of an orthonormal matrix, where V≧M. V may be selected to achieve the desired spatial diversity order and channel estimation overhead order. Output symbols are mapped to the M virtual antennas selected for each assigned subcarrier by applying the orthonormal matrix. Pilot symbols are also mapped to the V virtual antennas. The mapped symbols are provided for transmission from T transmit antennas, where T≧V. Transmission symbols are generated for the mapped symbols, e.g., based on OFDM or SC-FDMA. Different cyclic delays may be applied for the T transmit antennas to improve diversity.
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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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