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1.发明申请TIME OF ARRIVAL (TOA) ESTIMATION FOR POSITIONING IN A WIRELESS COMMUNICATION NETWORK 有权到达时间（TOA）无线通信网络中的定位估计公开(公告)号：US20100279707A1
公开(公告)日：2010-11-04
申请号：US12606037
申请日：2009-10-26
申请人： Sven Fischer , Muhammad Awais Amin , Douglas Neal Rowitch , Avneesh Agrawal , Raja S. Bachu , Ashwin Sampath
发明人： Sven Fischer , Muhammad Awais Amin , Douglas Neal Rowitch , Avneesh Agrawal , Raja S. Bachu , Ashwin Sampath
CPC分类号： G01S5/14 , G01S5/021 , G01S5/0221 , G01S5/0226 , G01S5/0236
摘要： Techniques for determining time of arrivals (TOAs) of signals in a wireless communication network are described. Each cell may transmit (i) synchronization signals on a set of contiguous subcarriers in the center portion of the system bandwidth and (ii) reference signals on different sets of non-contiguous subcarriers distributed across the system bandwidth. A UE may determine TOA for a cell based on multiple signals transmitted on different sets of subcarriers. The UE may perform correlation for a first signal (e.g., a synchronization signal) from the cell to obtain first correlation results for different time offsets. The UE may perform correlation for a second signal (e.g., a reference signal) from the cell to obtain second correlation results for different time offsets. The UE may combine the first and second correlation results and may determine the TOA for the cell based on the combined correlation results.
摘要翻译： 描述了用于确定无线通信网络中的信号的到达时间（TOAs）的技术。 每个小区可以在系统带宽的中心部分中的一组连续子载波上发送（i）同步信号，以及（ii）分布在系统带宽上的不连续子载波的不同集合上的参考信号。 UE可以基于在不同的子载波集合上发送的多个信号来确定小区的TOA。 UE可以对来自小区的第一信号（例如，同步信号）执行相关性，以获得用于不同时间偏移的第一相关结果。 UE可以对来自小区的第二信号（例如，参考信号）执行相关性，以获得用于不同时间偏移的第二相关结果。 UE可以组合第一和第二相关结果，并且可以基于组合的相关结果来确定小区的TOA。
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2.发明授权Time of arrival (TOA) estimation for positioning in a wireless communication network 有权到达时间（TOA）估计在无线通信网络中的定位公开(公告)号：US09037155B2
公开(公告)日：2015-05-19
申请号：US12606037
申请日：2009-10-26
申请人： Sven Fischer , Muhammad Awais Amin , Douglas Neal Rowitch , Avneesh Agrawal , Raja S. Bachu , Ashwin Sampath
发明人： Sven Fischer , Muhammad Awais Amin , Douglas Neal Rowitch , Avneesh Agrawal , Raja S. Bachu , Ashwin Sampath
IPC分类号： H04W24/00 , G01S5/14 , G01S5/02 , H04B7/00 , H04B17/00 , H04W4/00 , H04J3/06 , G01S1/00 , G01S3/02 , G01S1/24
CPC分类号： G01S5/14 , G01S5/021 , G01S5/0221 , G01S5/0226 , G01S5/0236
摘要： Techniques for determining time of arrivals (TOAs) of signals in a wireless communication network are described. Each cell may transmit (i) synchronization signals on a set of contiguous subcarriers in the center portion of the system bandwidth and (ii) reference signals on different sets of non-contiguous subcarriers distributed across the system bandwidth. A UE may determine TOA for a cell based on multiple signals transmitted on different sets of subcarriers. The UE may perform correlation for a first signal (e.g., a synchronization signal) from the cell to obtain first correlation results for different time offsets. The UE may perform correlation for a second signal (e.g., a reference signal) from the cell to obtain second correlation results for different time offsets. The UE may combine the first and second correlation results and may determine the TOA for the cell based on the combined correlation results.
摘要翻译： 描述了用于确定无线通信网络中的信号的到达时间（TOAs）的技术。 每个小区可以在系统带宽的中心部分中的一组连续子载波上发送（i）同步信号，以及（ii）分布在系统带宽上的不连续子载波的不同集合上的参考信号。 UE可以基于在不同的子载波集合上发送的多个信号来确定小区的TOA。 UE可以对来自小区的第一信号（例如，同步信号）执行相关性，以获得用于不同时间偏移的第一相关结果。 UE可以对来自小区的第二信号（例如，参考信号）执行相关性，以获得用于不同时间偏移的第二相关结果。 UE可以组合第一和第二相关结果，并且可以基于组合的相关结果来确定小区的TOA。
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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
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.
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公开(公告)号：US08982851B2
公开(公告)日：2015-03-17
申请号：US12651838
申请日：2010-01-04
申请人： Avneesh Agrawal , Ashwin Sampath , Ravi Palanki , Naga Bhushan , Raja Sekhar Bachu , Aamod D. Khandekar
发明人： Avneesh Agrawal , Ashwin Sampath , Ravi Palanki , Naga Bhushan , Raja Sekhar Bachu , Aamod D. Khandekar
CPC分类号： H04L5/005 , H04L1/1893 , H04L5/0048 , H04L5/0082 , H04W72/005 , H04W72/1247
摘要： Systems and methodologies are described that facilitate providing high reuse for transmitting reference signals, such as positioning reference signals (PRS) and cell-specific reference signals (CRS), to improve hearability thereof for applications such as trilateration and/or the like. In particular, PRSs can be transmitted in designated or selected positioning subframes. Resource elements within the positioning subframe can be selected for transmitting the PRSs and can avoid conflict with designated control regions, resource elements used for transmitting cell-specific reference signals, and/or the like. Resource elements for transmitting PRSs can be selected according to a planned or pseudo-random reuse scheme. In addition, a transmit diversity scheme can be applied to the PRSs to minimize impact of introducing the PRSs to legacy devices. Moreover, portions of a subframe not designated for PRS transmission can be utilized for user plane data transmission.
摘要翻译： 描述了有助于提供用于传输参考信号（诸如定位参考信号（PRS）和小区特定参考信号（CRS））的高重用性的系统和方法，以改善诸如三边测量等应用的可听性。 特别地，PRS可以在指定或选定的定位子帧中传输。 可以选择定位子帧内的资源元素用于发送PRS，并且可以避免与指定的控制区域的冲突，用于发送小区特定参考信号的资源元素等。 用于传输PRS的资源元素可以根据计划或伪随机重用方案来选择。 此外，发射分集方案可以应用于PRS，以最小化将PRS引入传统设备的影响。 此外，未指定用于PRS传输的子帧的部分可以用于用户平面数据传输。
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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。
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公开(公告)号：US20090131098A1
公开(公告)日：2009-05-21
申请号：US12260861
申请日：2008-10-29
申请人： Aamod Khandekar , Alexei Gorokhov , Naga Bhushan , Ravi Palanki , Ashwin Sampath , Avneesh Agrawal
发明人： Aamod Khandekar , Alexei Gorokhov , Naga Bhushan , Ravi Palanki , Ashwin Sampath , Avneesh Agrawal
摘要： Providing for management of wireless communications in a heterogeneous wireless access point (AP) environment is described herein. By way of example, system data of an over-the-air message can be configured to include information identifying a distinct type of transmitting base station. In some aspects, the information can include an access type of the base station and/or a sector ID for distinguishing the base station among large numbers of other base stations. According to other aspects, the information can include wireless channel resources designated for a particular type of base station, or blanked by the transmitting base station, to facilitate interference reduction on such resources. By employing aspects of wireless communication management disclosed herein, efficient and reliable communication can be affected in large heterogeneous AP networks.
摘要翻译： 本文描述了在异构无线接入点（AP）环境中的无线通信的管理。 作为示例，空中消息的系统数据可以被配置为包括标识不同类型的发送基站的信息。 在一些方面，信息可以包括基站的接入类型和/或用于区分大量其他基站中的基站的扇区ID。 根据其他方面，信息可以包括为特定类型的基站指定的无线信道资源，或者由发射基站消隐，以便于对这些资源进行干扰减少。 通过采用这里公开的无线通信管理的方面，可以在大型异构AP网络中影响高效可靠的通信。
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公开(公告)号：US20090131061A1
公开(公告)日：2009-05-21
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
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。
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公开(公告)号：US20090129350A1
公开(公告)日：2009-05-21
申请号：US12260856
申请日：2008-10-29
申请人： Aamod Khandekar , Alexei Gorokhov , Naga Bhushan , Ravi Palanki , Ashwin Sampath , Avneesh Agrawal
发明人： Aamod Khandekar , Alexei Gorokhov , Naga Bhushan , Ravi Palanki , Ashwin Sampath , Avneesh Agrawal
CPC分类号： H04W48/08
摘要： Providing for management of wireless communications in a heterogeneous wireless access point (AP) environment is described herein. By way of example, system data of an over-the-air message can be configured to include information identifying a distinct type of transmitting base station. In some aspects, the information can include an access type of the base station and/or a sector ID for distinguishing the base station among large numbers of other base stations. According to other aspects, the information can include wireless channel resources designated for a particular type of base station, or blanked by the transmitting base station, to facilitate interference reduction on such resources. By employing aspects of wireless communication management disclosed herein, efficient and reliable communication can be affected in large heterogeneous AP networks.
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公开(公告)号：US20090129333A1
公开(公告)日：2009-05-21
申请号：US12260868
申请日：2008-10-29
申请人： Aamod Khandekar , Alexei Gorokhov , Naga Bhushan , Ravi Palanki , Ashwin Sampath , Avneesh Agrawal
发明人： Aamod Khandekar , Alexei Gorokhov , Naga Bhushan , Ravi Palanki , Ashwin Sampath , Avneesh Agrawal
CPC分类号： H04W72/1226 , H04W48/12 , H04W84/045
摘要： Providing for management of wireless communications in a heterogeneous wireless access point (AP) environment is described herein. By way of example, system data of an over-the-air message can be configured to include information identifying a distinct type of transmitting base station. In some aspects, the information can include an access type of the base station and/or a sector ID for distinguishing the base station among large numbers of other base stations. According to other aspects, system data transmitted on the wireless signal can include wireless channel resources designated for a particular type of base station, or blanked by the transmitting base station, to facilitate interference reduction on such resources. By employing aspects of wireless communication management disclosed herein, efficient and reliable communication can be affected in large heterogeneous AP networks.
摘要翻译： 本文描述了在异构无线接入点（AP）环境中的无线通信的管理。 作为示例，空中消息的系统数据可以被配置为包括标识不同类型的发送基站的信息。 在一些方面，信息可以包括基站的接入类型和/或用于区分大量其他基站中的基站的扇区ID。 根据其他方面，在无线信号上发送的系统数据可以包括为特定类型的基站指定的无线信道资源或由发送基站消隐，以便于对这些资源进行干扰减少。 通过采用这里公开的无线通信管理的方面，可以在大型异构AP网络中影响高效可靠的通信。
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公开(公告)号：US20070171819A1
公开(公告)日：2007-07-26
申请号：US11560092
申请日：2006-11-15
申请人： David Julian , Avneesh Agrawal , Ashwin Sampath , Gavin Horn
发明人： David Julian , Avneesh Agrawal , Ashwin Sampath , Gavin Horn
CPC分类号： H04W72/04 , H04W8/26 , H04W72/0446 , H04W84/18
摘要： Systems and methods are described that facilitate controlling transmission/reception time slots in a wireless multi-hop ad hoc network. A node, such as an access terminal or an access point, may select an identifier that corresponds to specific time slots during which nodes with that particular identifier may transmit and/or receive. Nodes that are one hop away from each other may select different identifiers in order to ensure that neighboring nodes do not transmit and/or receive during the same time slots. In this manner, interference caused and/or experienced by a given node may be reduced.
摘要翻译： 描述了有助于控制无线多跳自组织网络中的发送/接收时隙的系统和方法。 诸如接入终端或接入点的节点可以选择对应于具有该特定标识符的节点可以发送和/或接收的特定时隙的标识符。 距离彼此一跳的节点可以选择不同的标识符，以便确保相邻节点在相同的时隙期间不发送和/或接收。 以这种方式，可以减少给定节点引起和/或经历的干扰。
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