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11. 发明申请

US20090197588A1 BACKHAUL SIGNALING FOR INTERFERENCE AVOIDANCE 有权
标题翻译：用于干扰避免的反向信号
公开(公告)号：US20090197588A1
公开(公告)日：2009-08-06
申请号：US12260849
申请日：2008-10-29
申请人： Aamod Khandekar , Avneesh Agrawal , Ashwin Sampath , Gavin B. Horn , Alexei Gorokhov , Naga Bhushan , Tingfang Ji
发明人： Aamod Khandekar , Avneesh Agrawal , Ashwin Sampath , Gavin B. Horn , Alexei Gorokhov , Naga Bhushan , Tingfang Ji
IPC分类号： H04W4/00 , H04B1/00
CPC分类号： H04W72/082 , H04W52/243 , H04W72/0426 , H04W84/045 , H04W92/20 , Y02D70/00
摘要： Providing for interference reduction and/or avoidance utilizing backhaul signaling between wireless access points (APs) of a wireless access network (AN) is described herein. By way of example, an interference avoidance request (IAR) can be issued by an AP to reduce signal interference on forward link (FL) and/or downlink (DL) transmissions by neighboring APs. The IAR can be routed via a backhaul network and/or over-the-air via access terminals (ATs) coupled with the AP or one or more interfering APs. Upon receiving the IAR, an interfering AP can determine reduced transmit power levels for FL and/or RL transmissions and respond to the IAR. The response can include reduced power levels and can be sent via the backhaul network or OTA. By employing the backhaul network in full or in part, interference avoidance can be conducted even for semi-planned or unplanned heterogeneous networks coupled by the backhaul.
摘要翻译：本文描述了在无线接入网络（AN）的无线接入点（AP）之间利用回程信令来提供减少干扰和/或避免的干扰。作为示例，AP可以发出干扰避免请求（IAR），以减少相邻AP在前向链路（FL）和/或下行链路（DL）传输上的信号干扰。 IAR可以经由回程网络和/或通过与AP或一个或多个干扰AP耦合的接入终端（AT）进行路由。在接收到IAR时，干扰AP可以确定用于FL和/或RL传输的降低的发射功率电平并响应于IAR。响应可以包括降低的功率级别，并且可以通过回程网络或OTA发送。通过全面或部分采用回程网络，即使对于通过回程耦合的半计划或计划外异构网络，也可以进行干扰回避。

12. 发明申请

US20080151829A1 ACKNOWLEDGEMENT OF CONTROL MESSAGES IN A WIRELESS COMMUNICATION SYSTEM 有权
标题翻译：无线通信系统中控制消息的确认
公开(公告)号：US20080151829A1
公开(公告)日：2008-06-26
申请号：US11943551
申请日：2007-11-20
申请人： Aamod Khandekar , Alexei Gorokhov , Avneesh Agrawal , Sundeep Rangan , Arnab Das
发明人： Aamod Khandekar , Alexei Gorokhov , Avneesh Agrawal , Sundeep Rangan , Arnab Das
IPC分类号： H04Q7/00
CPC分类号： H04L1/1607 , H04L5/0007 , H04L5/0023 , H04L5/0053 , H04W72/0413 , H04W72/042
摘要： Techniques for sending control messages are described. In an aspect, assignment messages may be acknowledged based on either linked or dedicated acknowledgement (ACK) resources. A terminal may receive an assignment message from a base station, determine whether to acknowledge the assignment message, and determine ACK resources to use to acknowledge the assignment message. The ACK resources may be linked to a control block on which the assignment message was received, linked to resources given by the assignment message, or assigned to the terminal. The terminal may send the acknowledgement on the ACK resources. In another aspect, a control message may be acknowledged based on ACK resources determined based on the control message or the control block. The ACK resources may be linked to resources assigned by the control message or linked to the control message. The terminal may send an acknowledgement for the control message on the ACK resources.
摘要翻译：描述用于发送控制消息的技术。在一方面，可以基于链接或专用确认（ACK）资源来确认分配消息。终端可以从基站接收分配消息，确定是否确认分配消息，并确定用于确认分配消息的ACK资源。 ACK资源可以链接到其上接收到分配消息的控制块，链接到由分配消息给出的资源或分配给终端。终端可以在ACK资源上发送确认。在另一方面，可以基于基于控制消息或控制块确定的ACK资源来确认控制消息。 ACK资源可以链接到由控制消息分配或链接到控制消息的资源。终端可以在ACK资源上发送关于控制消息的确认。

13. 发明申请

US20070197254A1 SERVING SECTOR DIRECTED POWER CONTROL 有权
标题翻译：服务部门指导的电源控制
公开(公告)号：US20070197254A1
公开(公告)日：2007-08-23
申请号：US11620033
申请日：2007-01-04
申请人： Mohammad Borran , Aamod Khandekar , Avneesh Agrawal , Tingfang Ji
发明人： Mohammad Borran , Aamod Khandekar , Avneesh Agrawal , Tingfang Ji
IPC分类号： H04B7/00 , H04Q7/20
CPC分类号： H04W52/247 , H04W52/146 , H04W52/241 , H04W52/243 , H04W52/246 , H04W52/36 , H04W52/54
摘要： Systems and methodologies are described that facilitate serving sector directed transmit power control in a wireless communication environment. Under certain conditions, an access point can have better data with which to determine appropriate power levels than an individual terminal. Accordingly, an access point can transmit power control information to one or more terminals supported by the access point overriding normal power determination procedures. In particular, power control information can be included within an assignment message that designates resources (e.g., frequency, time) assigned to a terminal. Power control information can be based upon SNR, quality of service requirements, interference information, any other relevant information or any combination thereof.
摘要翻译：描述了在无线通信环境中促进服务于扇区定向发射功率控制的系统和方法。在某些条件下，接入点可以具有比单个终端确定适当功率级别的更好的数据。因此，接入点可以将功率控制信息发送到由接入点支持的一个或多个终端覆盖正常功率确定过程。特别地，功率控制信息可以被包括在指定分配给终端的资源（例如，频率，时间）的分配消息内。功率控制信息可以基于SNR，服务质量要求，干扰信息，任何其他相关信息或其任何组合。

14. 发明申请

US20060209927A1 Signal acquisition in a wireless communication system 有权
标题翻译：无线通信系统中的信号采集
公开(公告)号：US20060209927A1
公开(公告)日：2006-09-21
申请号：US11022482
申请日：2004-12-22
申请人： Aamod Khandekar , Avneesh Agrawal
发明人： Aamod Khandekar , Avneesh Agrawal
IPC分类号： H04B1/00
CPC分类号： H04L5/0048 , H04B1/7077 , H04B2201/70701 , H04B2201/70702 , H04L5/0026 , H04L25/0204 , H04L25/03866 , H04L27/2613 , H04L27/2657 , H04L27/2662 , H04L27/2675
摘要： Each base station transmits a TDM pilot 1 having multiple instances of a pilot-1 sequence generated with a PN 1 sequence and a TDM pilot 2 having at least one instance of a pilot-2 sequence generated with a PN2 sequence. Each base station is assigned a specific PN2 sequence that uniquely identifies that base station. A terminal uses TDM pilot 1 to detect for the presence of a signal and uses TDM pilot 2 to identify base stations and obtain accurate timing. For signal detection, the terminal performs delayed correlation on received samples and determines whether a signal is present. If a signal is detected, the terminal performs direct correlation on the received samples with PN1 sequences for K1 different time offsets and identifies K2 strongest TDM pilot 1 instances. For time synchronization, the terminal performs direct correlation on the received samples with PN2 sequences to detect for TDM pilot 2.
摘要翻译：每个基站发送具有由PN 1序列生成的导频1序列的多个实例的TDM导频1和具有由PN2序列生成的导频-2序列的至少一个实例的TDM导频2。为每个基站分配唯一标识该基站的特定PN2序列。终端使用TDM导频1检测信号的存在，并使用TDM导频2识别基站并获得准确的定时。对于信号检测，终端在接收到的采样上执行延迟相关，并确定信号是否存在。如果检测到信号，则终端对于接收到的样本与用于不同时间偏移的PN1序列进行直接相关，并识别最强的TDM导频1实例。对于时间同步，终端对PN2序列的接收样本执行直接相关，以检测TDM导频2。

15. 发明申请

US20050190868A1 Iterative channel and interference estimation and decoding 有权
标题翻译：迭代通道和干扰估计与解码
公开(公告)号：US20050190868A1
公开(公告)日：2005-09-01
申请号：US10791342
申请日：2004-03-01
申请人： Aamod Khandekar , Avneesh Agrawal , Fuyun Ling
发明人： Aamod Khandekar , Avneesh Agrawal , Fuyun Ling
IPC分类号： H04L1/00 , H04L25/03
CPC分类号： H04L1/005 , H04L1/0071 , H04L25/0238 , H04L25/03171
摘要： For an iterative channel and interference estimation and decoding scheme, prior information for channel gain and interference is initially obtained based on received pilot symbols. Forward information for code bits corresponding to received data symbols is derived based on the received data symbols and the prior information and then decoded to obtain feedback information for the code bits corresponding to the received data symbols. A posteriori information for channel gain and interference for each received data symbol is derived based on the feedback information for that received data symbol. The a posteriori information for the received data symbols and the prior information are combined to obtain updated information for channel gain and interference for each received data symbol. The process can be repeated for any number of iterations. The prior, a posteriori, and updated information may be represented by joint probability distributions on channel gain and interference. The forward and feedback information may be represented by log-likelihood ratios.
摘要翻译：对于迭代信道和干扰估计和解码方案，首先基于接收到的导频符号获得用于信道增益和干扰的先验信息。基于接收到的数据符号和先验信息导出与接收到的数据符号相对应的码位的转发信息，然后解码以获得与接收的数据符号对应的码位的反馈信息。基于该接收到的数据符号的反馈信息导出每个接收到的数据符号的信道增益和干扰的后验信息。组合接收到的数据符号和先验信息的后验信息以获得每个接收到的数据符号的信道增益和干扰的更新信息。该过程可以重复任意次数的迭代。先前的，后验的和更新的信息可以由通道增益和干扰的联合概率分布来表示。正向和反馈信息可以由对数似然比表示。

16. 发明授权

US09801188B2 Backhaul signaling for interference avoidance 有权
公开(公告)号：US09801188B2
公开(公告)日：2017-10-24
申请号：US12260849
申请日：2008-10-29
申请人： Aamod Khandekar , Avneesh Agrawal , Ashwin Sampath , Gavin B. Horn , Alexei Gorokhov , Naga Bhushan , Tingfang Ji
发明人： Aamod Khandekar , Avneesh Agrawal , Ashwin Sampath , Gavin B. Horn , Alexei Gorokhov , Naga Bhushan , Tingfang Ji
IPC分类号： H04W4/00 , H04W72/08 , H04W52/24 , H04W72/04 , H04W84/04 , H04W92/20
CPC分类号： H04W72/082 , H04W52/243 , H04W72/0426 , H04W84/045 , H04W92/20 , Y02D70/00
摘要： Providing for interference reduction and/or avoidance utilizing backhaul signaling between wireless access points (APs) of a wireless access network (AN) is described herein. By way of example, an interference avoidance request (IAR) can be issued by an AP to reduce signal interference on forward link (FL) and/or downlink (DL) transmissions by neighboring APs. The IAR can be routed via a backhaul network and/or over-the-air via access terminals (ATs) coupled with the AP or one or more interfering APs. Upon receiving the IAR, an interfering AP can determine reduced transmit power levels for FL and/or RL transmissions and respond to the IAR. The response can include reduced power levels and can be sent via the backhaul network or OTA. By employing the backhaul network in full or in part, interference avoidance can be conducted even for semi-planned or unplanned heterogeneous networks coupled by the backhaul.

17. 发明申请

US20150312895A1 SYSTEMS AND METHODS TO DEFINE CONTROL CHANNELS USING RESERVED RESOURCE BLOCKS 有权
公开(公告)号：US20150312895A1
公开(公告)日：2015-10-29
申请号：US14789332
申请日：2015-07-01
申请人： Aamod Khandekar , Juan Montojo , Avneesh Agrawal
发明人： Aamod Khandekar , Juan Montojo , Avneesh Agrawal
IPC分类号： H04W72/04
CPC分类号： H04W72/0406 , H04L5/0073 , H04W16/14 , H04W72/042 , H04W72/044 , H04W88/06 , H04W88/10
摘要： Systems and methodologies are described that facilitate defining new control channels in legacy wireless networks. Control data resources for new systems can be defined over resources reserved for general data communications in the legacy wireless network specification. In this regard, legacy devices can still be supported by devices implementing new control data resources, and the new control data resources can avoid substantial interference that is typically exhibited over legacy control and/or reference signal resources by instead using the general data resources. In addition, new system devices can avoid scheduling data communication resources over the new control resources to create a substantially non-interfered global control segment. Control data can be transmitted over the segment using beacon-based technologies, reuse schemes, and/or the like.

18. 发明授权

US08842693B2 Rank step-down for MIMO SCW design employing HARQ 有权
标题翻译：采用HARQ的MIMO SCW设计的等级降级
公开(公告)号：US08842693B2
公开(公告)日：2014-09-23
申请号：US11441742
申请日：2006-05-25
申请人： Avneesh Agrawal , Aamod Khandekar , Hemanth Sampath , Tamer Kadous
发明人： Avneesh Agrawal , Aamod Khandekar , Hemanth Sampath , Tamer Kadous
IPC分类号： H04J3/22 , H04J13/00
CPC分类号： H04B7/0697 , H04L1/0001 , H04L1/0006 , H04L1/0026 , H04L1/1812 , H04L1/1893
摘要： Systems and methodologies are described that facilitate reducing rank (e.g., of a user device) as a number of transmissions there from increases. Such rank step-down can improve interference resistance and facilitate maintaining code rate despite transmission propagation. Additionally, rank step-down information can be encoded along with CQI information to generate a 5-bit CQI signal that can facilitate updating a user's rank upon each CQI transmission (e.g., approximately every 5 ms). The described systems and/or methods can be employed in a single code word (SCW) wireless communication environment with a hybrid automatic request (HARQ) protocol.
摘要翻译：描述的系统和方法被简化为有助于减少等级（例如，用户设备），因为其中的传输数量增加。这种排序降低可以改善抗干扰性，并且有助于保持代码率，尽管传输传播。此外，等级降级信息可以与CQI信息一起编码，以产生可以有助于在每次CQI传输（例如，大约每5ms）更新用户的等级的5比特CQI信号。所描述的系统和/或方法可以用于具有混合自动请求（HARQ）协议的单个码字（SCW）无线通信环境中。

19. 发明授权

US08798665B2 Beacon-based control channels 有权
标题翻译：基于信标的控制通道
公开(公告)号：US08798665B2
公开(公告)日：2014-08-05
申请号：US12163812
申请日：2008-06-27
申请人： Ravi Palanki , Avneesh Agrawal , Alexei Gorokhov , Aamod Khandekar , Ashwin Sampath , Dexu Lin
发明人： Ravi Palanki , Avneesh Agrawal , Alexei Gorokhov , Aamod Khandekar , Ashwin Sampath , Dexu Lin
IPC分类号： H04W48/12
CPC分类号： H04L5/0053 , H04L1/0056 , H04L1/0072 , H04L5/0096 , H04L27/10 , H04W4/20
摘要： Systems and methodologies are described that facilitate transmitting control information in wireless networks. Portions of bandwidth can be blanked for transmitting control information, and the control information transmitters can utilize beacon symbols to convey the control information. In this regard, interference is mitigated with respect to data transmissions over the control information bandwidth. Selected frequencies of the beacon symbols in a codeword can be used to indicate the control information. The codewords can be encoded with an error control code to provide redundancy for decoding in the presence of some interference.
摘要翻译：描述了有助于在无线网络中发送控制信息的系统和方法。可以将部分带宽消隐以发送控制信息，并且控制信息发射机可以利用信标符号来传达控制信息。在这方面，相对于控制信息带宽上的数据传输，减轻了干扰。可以使用码字中的信标符号的选定频率来指示控制信息。可以用错误控制码对码字进行编码，以在存在一些干扰的情况下提供用于解码的冗余。

20. 发明授权

US08738019B2 Method and system for deassignment of resources in a wireless communication system 有权
标题翻译：无线通信系统资源取消分配方法及系统
公开(公告)号：US08738019B2
公开(公告)日：2014-05-27
申请号：US11369494
申请日：2006-03-07
申请人： Alexei Gorokhov , Avneesh Agrawal , Aamod Khandekar
发明人： Alexei Gorokhov , Avneesh Agrawal , Aamod Khandekar
IPC分类号： H04W74/00
CPC分类号： H04L5/0096 , H04L5/0007 , H04W28/06 , H04W72/00 , H04W72/042 , H04W76/34
摘要： Systems and methods are disclosed that facilitate dynamically de-assigning resources and communication channels for transmitting messages indicative of resource de-assigning. Systems and method for generating and interpreting de-assignment messages are also provided.
摘要翻译：公开了促进动态地分配资源和通信信道以发送指示资源去分配的消息的系统和方法。还提供了用于生成和解释解除分配消息的系统和方法。

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