公开(公告)号：US20100067421A1

公开(公告)日：2010-03-18

申请号：US12557407

申请日：2009-09-10

申请人： Alexei Y. Gorokhov ,  Ravi Palanki ,  Tamer A. Kadous ,  Fatih Ulupinar

发明人： Alexei Y. Gorokhov ,  Ravi Palanki ,  Tamer A. Kadous ,  Fatih Ulupinar

IPC分类号： G08C17/00

CPC分类号： H04W52/0216 ,  H04W48/12 ,  H04W52/0206 ,  Y02D70/1222 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/22 ,  Y02D70/23

摘要： Apparatus and methods are disclosed for control of an idle mode in a wireless device. In particular, the idle mode duty cycle of a preamble transmission by an access point (AP), as an example, is variably or adaptively set in response to determined conditions of the wireless neighborhood. The conditions determined include the whether or not other wireless devices are present in the vicinity of sensing wireless device, as well as the state of those devices present, such as whether they are in an idle mode or an active mode.

摘要翻译： 公开了用于控制无线设备中的空闲模式的装置和方法。 具体地，作为示例，由接入点（AP）的前导码传输的空闲模式占空比可响应于所确定的无线邻域的条件而被可变地或自适应地设置。 确定的条件包括其他无线设备是否存在于感测无线设备附近，以及存在的那些设备的状态，例如它们是处于空闲模式还是活动模式。

公开(公告)号：US20100061317A1

公开(公告)日：2010-03-11

申请号：US12400383

申请日：2009-03-09

申请人： Alexei Y. Gorokhov ,  Ravi Palanki

发明人： Alexei Y. Gorokhov ,  Ravi Palanki

IPC分类号： H04W52/04 ,  H04B15/00

CPC分类号： H04W52/243

摘要： In a wireless communication system, short-term interference mitigation may be used to mitigate (e.g., to avoid or reduce) interference on a given link in order to improve performance of data transmission. The interference mitigation reduces transmit power of interfering transmissions so that a higher signal-to-noise-and-interference ratio (SINR) can be achieved for a desired data transmission. A node may observe high interference from an interfering node that degrades performance of data transmission sent on that link. By taking advantage of an communication path with the interfering node (e.g., wireless data/control channel, backhaul network connection, or analog broadcast signal), the transmitting node can successfully complete time critical communications while allowing the interfering node to also simultaneously communicate without reducing overall resources nor burdening any managing nodes.

摘要翻译： 在无线通信系统中，可以使用短期干扰减轻来减轻（例如，以避免或减少）给定链路上的干扰，以便提高数据传输的性能。 干扰减轻减少干扰传输的发射功率，从而可以实现更高的信噪比干扰比（SINR），用于所需的数据传输。 节点可能会观察到来自干扰节点的高干扰，从而降低在该链路上发送的数据传输的性能。 通过利用与干扰节点（例如，无线数据/控制信道，回程网络连接或模拟广播信号）的通信路径，发送节点可以成功地完成时间关键通信，同时允许干扰节点同时通信而不减少 整体资源也不负责管理节点。

公开(公告)号：US20100039948A1

公开(公告)日：2010-02-18

申请号：US12359612

申请日：2009-01-26

申请人： Avneesh Agrawal ,  Aamod D. Khandekar ,  Naga Bhushan ,  Alexei Y. Gorokhov ,  Ravi Palanki

发明人： Avneesh Agrawal ,  Aamod D. Khandekar ,  Naga Bhushan ,  Alexei Y. Gorokhov ,  Ravi Palanki

IPC分类号： H04J1/16 ,  H04W4/00

CPC分类号： H04W72/082 ,  H04W24/10

摘要： Techniques for managing interference in a wireless network are described. A base station may receive enhanced pilot measurement reports from user equipments (UEs) and may make an interference management decision based on the received reports. The base station may select a serving base station for a UE based on an enhanced pilot measurement report received from the UE. The base station may determine resources with a low target interference level at a neighbor base station and may avoid scheduling a UE for uplink transmission on the resources. The base station may also determine whether to reserve resources for a neighbor base station based on data performance of the neighbor base station, whether the neighbor base station observes high interference from UEs served by the base station, or whether UEs served by the neighbor base station observe high interference from the base station, which may be determined based on the enhanced pilot measurement reports.

摘要翻译： 描述了用于管理无线网络中的干扰的技术。 基站可以从用户设备（UE）接收增强的导频测量报告，并且可以基于所接收的报告进行干扰管理决定。 基站可以基于从UE接收的增强型导频测量报告来选择用于UE的服务基站。 基站可以在相邻基站处确定具有低目标干扰电平的资源，并且可以避免在资源上调度UE用于上行链路传输。 基站还可以基于邻近基站的数据性能来确定是否为相邻基站预留资源，邻近基站是否观察到来自基站所服务的UE的高干扰，或者是由相邻基站服务的UE 观察来自基站的高干扰，其可以基于增强的导频测量报告来确定。

公开(公告)号：US20100034315A1

公开(公告)日：2010-02-11

申请号：US12511236

申请日：2009-07-29

申请人： Aamod D. Khandekar ,  Alexei Y. Gorokhov ,  Arak Sutivong ,  Murat Mese

发明人： Aamod D. Khandekar ,  Alexei Y. Gorokhov ,  Arak Sutivong ,  Murat Mese

IPC分类号： H04L25/49 ,  H04B7/005

CPC分类号： H04W52/146 ,  H04W52/12 ,  H04W52/16 ,  H04W52/247 ,  H04W52/248

摘要： Techniques for performing power control of multiple channels sent using multiple radio technologies are described. The transmit power of a reference channel, sent using a first radio technology (e.g., CDMA), is adjusted to achieve a target level of performance (e.g., a target erasure rate) for the reference channel. The transmit power of a data channel, sent using a second radio technology (e.g., OFDMA), is adjusted based on the transmit power of the reference channel. In one power control scheme, a reference power spectral density (PSD) level is determined based on the transmit power of the reference channel. A transmit PSD delta for the data channel is adjusted based on interference estimates. A transmit PSD of the data channel is determined based on the reference PSD level and the transmit PSD delta. The transmit power of the data channel is then set to achieve the transmit PSD for the data channel.

公开(公告)号：US20100008294A1

公开(公告)日：2010-01-14

申请号：US12498468

申请日：2009-07-07

申请人： Ravi Palanki ,  Alexei Y. Gorokhov ,  Naga Bhushan

发明人： Ravi Palanki ,  Alexei Y. Gorokhov ,  Naga Bhushan

IPC分类号： H04W4/00 ,  H04B15/00 ,  H04B1/00

CPC分类号： H04W72/082 ,  H04B7/022 ,  H04B2201/70702 ,  H04W48/08 ,  H04W72/0406

摘要： Techniques for supporting data transmission on the uplink in a wireless network are described. In an aspect, a user equipment (UE) may send a data transmission to a serving base station and may send uplink control information (UCI) to a non-serving base station. The UCI may include pertinent information to allow the non-serving base station to process the data transmission from the UE. In one design, the UCI may allow the non-serving base station to estimate the interference due to the data transmission from the UE and to cancel the interference at the non-serving base station. The interference cancellation may improve the received signal quality at the non-serving base station. After the interference cancellation, the non-serving base station may process a data transmission from another UE served by the base station.

摘要翻译： 描述了用于在无线网络中的上行链路上支持数据传输的技术。 在一方面，用户设备（UE）可以向服务基站发送数据传输，并且可以向非服务基站发送上行链路控制信息（UCI）。 UCI可以包括允许非服务基站处理来自UE的数据传输的相关信息。 在一种设计中，UCI可以允许非服务基站估计由于来自UE的数据传输的干扰并且消除在非服务基站处的干扰。 干扰消除可以改善非服务基站处的接收信号质量。 在干扰消除之后，非服务基站可以处理来自基站服务的另一个UE的数据传输。

公开(公告)号：US09246659B2

公开(公告)日：2016-01-26

申请号：US12388414

申请日：2009-02-18

申请人： Alexei Y. Gorokhov ,  Tingfang Ji

发明人： Alexei Y. Gorokhov ,  Tingfang Ji

IPC分类号： H04B3/10 ,  H04L5/00 ,  H04L5/14 ,  H04L1/00 ,  H04L1/18 ,  H04L25/03

CPC分类号： H04L5/006 ,  H04L1/0002 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/1812 ,  H04L5/0007 ,  H04L5/0044 ,  H04L5/0048 ,  H04L5/0057 ,  H04L5/0064 ,  H04L5/1438 ,  H04L25/0398

摘要： Systems and methods of scheduling sub-carriers in an OFDMA system in which a scheduler takes into account channel conditions experienced by the communication devices to optimize channel conditions. The scheduler can partition a set of sub-carriers spanning an operating bandwidth into a plurality of segments. The segments can include a plurality of global segments that each includes a distinct non-contiguous subset of the sub-carriers spanning substantially the entire operating bandwidth. One or more of the global segments can be further partitioned into a plurality of local segments that each has a bandwidth that is less than a channel coherence bandwidth. The scheduler determines channel characteristics experienced by each communication device via reporting or channel estimation, and allocates one or more segments to communication links for each device according to the channel characteristics.

公开(公告)号：US08995559B2

公开(公告)日：2015-03-31

申请号：US12411258

申请日：2009-03-25

申请人： Ravi Palanki ,  Alexei Y. Gorokhov

发明人： Ravi Palanki ,  Alexei Y. Gorokhov

IPC分类号： H04L27/00 ,  H04L27/10 ,  H04L5/00 ,  H04W52/32 ,  H04L27/30 ,  H04L27/26 ,  H04W52/24 ,  H04W52/28

CPC分类号： H04W72/082 ,  H04L5/0007 ,  H04L5/0053 ,  H04L5/0091 ,  H04L27/10 ,  H04L27/2647 ,  H04L27/30 ,  H04W52/243 ,  H04W52/245 ,  H04W52/281 ,  H04W52/32 ,  H04W72/0426

摘要： Techniques for sending signaling messages in a wireless communication network are described. In an aspect, a signaling message (e.g., a reduce interference request) may be sent by mapping it to at least one specific subcarrier among a set of subcarriers reserved for sending the signaling message. The at least one subcarrier may be selected based on the message value. A signal may be sent on the at least one subcarrier in multiple symbol periods to convey the signaling message. In another aspect, a reduce interference request may be sent based on an orthogonal resource among orthogonal resources available for sending reduce interference requests. In one design, an orthogonal sequence may be selected based on the request and may be spread across a resource segment. In another design, the reduce interference request may be processed to obtain modulation symbols, and each modulation symbol may be spread across multiple subcarriers in one symbol period.

摘要翻译： 描述了在无线通信网络中发送信令消息的技术。 在一方面，信令消息（例如，减少干扰请求）可以通过将信令消息映射到保留用于发送信令消息的一组子载波中的至少一个特定子载波来发送。 可以基于消息值来选择至少一个子载波。 可以在多个符号周期中的至少一个子载波上发送信号以传送信令消息。 在另一方面，可以基于可用于发送减少干扰请求的正交资源之间的正交资源来发送减少干扰请求。 在一种设计中，可以基于该请求来选择正交序列，并且可以跨越资源段进行扩展。 在另一种设计中，可以处理减少干扰请求以获得调制符号，并且每个调制符号可以在一个符号周期内跨多个子载波进行扩展。

公开(公告)号：US08737296B2

公开(公告)日：2014-05-27

申请号：US12603397

申请日：2009-10-21

申请人： Ravi Palanki ,  Alexei Y. Gorokhov ,  Naga Bhushan

发明人： Ravi Palanki ,  Alexei Y. Gorokhov ,  Naga Bhushan

IPC分类号： H04W4/00

CPC分类号： H04W36/0055 ,  H04L1/0026 ,  H04L1/1607 ,  H04L5/0035 ,  H04W36/18

摘要： Systems and methods that designate a control attachment point(s) during transmission of data in a Coordinated Multipoint (CoMP) system. The control attachment point is represented by an anchor cell to address control signaling and represent a User Equipment's (UE) interaction with the wireless communication system from a perspective of control (e.g., supplying/sending grants to the UE, transmitting/receiving ACKS on the downlink/uplink to the UE, control information (CQI), and the like.) The cells can further engage in backhaul transfer of information therebetween, and dynamic switching/change of anchor point based on criteria such as control loading, channel quality, and the like can further be implemented.

摘要翻译： 在协调多点（CoMP）系统中传输数据期间指定控制连接点的系统和方法。 控制连接点由锚小区表示以解决控制信令，并且从控制的角度（例如，向UE提供/发送授权，在...上发送/接收ACKS）来表示与无线通信系统的用户设备（UE）交互 UE的下行链路/上行链路，控制信息（CQI）等）。小区可以进一步参与其间的信息的回程传输，以及基于诸如控制加载，信道质量等标准的动态切换/改变锚点 可以进一步实现。

公开(公告)号：US08718181B2

公开(公告)日：2014-05-06

申请号：US12511236

申请日：2009-07-29

申请人： Aamod D. Khandekar ,  Alexei Y. Gorokhov ,  Arak Sutivong ,  Murat Mese

发明人： Aamod D. Khandekar ,  Alexei Y. Gorokhov ,  Arak Sutivong ,  Murat Mese

IPC分类号： H04K1/02 ,  H04L25/03

CPC分类号： H04W52/146 ,  H04W52/12 ,  H04W52/16 ,  H04W52/247 ,  H04W52/248

摘要： Techniques for performing power control of multiple channels sent using multiple radio technologies are described. The transmit power of a reference channel, sent using a first radio technology (e.g., CDMA), is adjusted to achieve a target level of performance (e.g., a target erasure rate) for the reference channel. The transmit power of a data channel, sent using a second radio technology (e.g., OFDMA), is adjusted based on the transmit power of the reference channel. In one power control scheme, a reference power spectral density (PSD) level is determined based on the transmit power of the reference channel. A transmit PSD delta for the data channel is adjusted based on interference estimates. A transmit PSD of the data channel is determined based on the reference PSD level and the transmit PSD delta. The transmit power of the data channel is then set to achieve the transmit PSD for the data channel.

摘要翻译： 描述了使用多种无线电技术发送的多信道的功率控制技术。 调整使用第一无线电技术（例如，CDMA）发送的参考信道的发射功率，以实现用于参考信道的目标性能水平（例如，目标擦除率）。 使用第二无线电技术（例如，OFDMA）发送的数据信道的发射功率基于参考信道的发射功率进行调整。 在一个功率控制方案中，基于参考信道的发射功率来确定参考功率谱密度（PSD）电平。 基于干扰估计来调整数据信道的传输PSD增量。 基于参考PSD电平和发送PSD增量来确定数据信道的发送PSD。 然后设置数据信道的发射功率以实现数据信道的发射PSD。

公开(公告)号：US08693429B2

公开(公告)日：2014-04-08

申请号：US12750556

申请日：2010-03-30

申请人： Juan Montojo ,  Amir Farajidana ,  Alexei Y. Gorokhov ,  Kapil Bhattad ,  Ravi Palanki

发明人： Juan Montojo ,  Amir Farajidana ,  Alexei Y. Gorokhov ,  Kapil Bhattad ,  Ravi Palanki

IPC分类号： H04W4/00

CPC分类号： H04L5/005 ,  H04L5/0014 ,  H04L5/0051 ,  H04L25/0226

摘要： Apparatus and methods for generation and use of reference signals in a wireless communications system are described. A group-specific reference signal pattern may be generated for provision to a group of UEs or terminals in communication with an eNodeB or base station. The reference signal may be generated based on system parameters. Reference signals may be generated to span multiple contiguous physical resource blocks.

摘要翻译： 描述了在无线通信系统中用于生成和使用参考信号的装置和方法。 可以生成组特定参考信号模式，以提供到与eNodeB或基站通信的一组UE或终端。 可以基于系统参数生成参考信号。 可以生成参考信号以跨越多个连续的物理资源块。