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31. 发明申请

US20100279707A1 TIME OF ARRIVAL (TOA) ESTIMATION FOR POSITIONING IN A WIRELESS COMMUNICATION NETWORK 有权
标题翻译：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
IPC分类号： H04W24/00 , H04B17/00
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。

32. 发明申请

US20070171819A1 RESTRICTING TIME SLOTS FOR MESH NETWORKS 有权
标题翻译：限制网络的时间段
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
IPC分类号： H04L12/26 , H04Q7/00
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。

33. 发明授权

US08374163B2 Synchronization of wireless nodes 有权
标题翻译：无线节点同步
公开(公告)号：US08374163B2
公开(公告)日：2013-02-12
申请号：US11938058
申请日：2007-11-09
申请人： Gavin Bernard Horn , Avneesh Agrawal , Ashwin Sampath
发明人： Gavin Bernard Horn , Avneesh Agrawal , Ashwin Sampath
IPC分类号： H04J3/06 , H04J3/16
CPC分类号： H04J3/0679 , H04J3/0641 , H04J3/0652 , H04W56/001
摘要： A first wireless node may synchronize its timeslots with the timeslots of a second wireless node that was previously transmitting and receiving data in an asynchronous manner with respect to the timeslots of the first wireless node. By synchronizing timeslots, the wireless nodes may avoid interference that may otherwise occur if the wireless nodes operate in an asynchronous manner. A wireless node shares its timing information with other wireless nodes by repeatedly transmitting timing reference signals in conjunction with a synchronization metric that defines the relative priority of the timing reference. In the event a wireless node does not receive a GPS-based timing reference, the wireless node may synchronize to a timing reference based on the parameters of the synchronization metric of that timing reference. In the event a wireless node does not receive any timing references, the wireless node may define and advertise it's a timing reference and associated synchronization metric. To avoid synchronization race conditions, the synchronization metrics may be defined such that wireless nodes that have different timing references will advertise different synchronization metrics.
摘要翻译：第一无线节点可以将其时隙与先前以相对于第一无线节点的时隙的异步方式发送和接收数据的第二无线节点的时隙同步。通过同步时隙，无线节点可以避免无线节点以异步方式操作时可能发生的干扰。无线节点通过与定义定时参考的相对优先级的同步度量重复地发送定时参考信号，与其他无线节点共享其定时信息。在无线节点不接收基于GPS的定时参考的情况下，无线节点可以基于该定时参考的同步度量的参数来同步到定时参考。在无线节点没有接收任何定时参考的情况下，无线节点可以定义并通告它是定时参考和相关联的同步度量。为了避免同步竞争条件，可以定义同步度量，使得具有不同定时参考的无线节点将通告不同的同步度量。

34. 发明申请

US20090122782A1 SYNCHRONIZATION OF WIRELESS NODES 有权
标题翻译：无线节点同步
公开(公告)号：US20090122782A1
公开(公告)日：2009-05-14
申请号：US11938058
申请日：2007-11-09
申请人： Gavin Bernard Horn , Avneesh Agrawal , Ashwin Sampath
发明人： Gavin Bernard Horn , Avneesh Agrawal , Ashwin Sampath
IPC分类号： H04J3/06
CPC分类号： H04J3/0679 , H04J3/0641 , H04J3/0652 , H04W56/001
摘要： A first wireless node may synchronize its timeslots with the timeslots of a second wireless node that was previously transmitting and receiving data in an asynchronous manner with respect to the timeslots of the first wireless node. By synchronizing timeslots, the wireless nodes may avoid interference that may otherwise occur if the wireless nodes operate in an asynchronous manner. A wireless node shares its timing information with other wireless nodes by repeatedly transmitting timing reference signals in conjunction with a synchronization metric that defines the relative priority of the timing reference. In the event a wireless node does not receive a GPS-based timing reference, the wireless node may synchronize to a timing reference based on the parameters of the synchronization metric of that timing reference. In the event a wireless node does not receive any timing references, the wireless node may define and advertise it's a timing reference and associated synchronization metric. To avoid synchronization race conditions, the synchronization metrics may be defined such that wireless nodes that have different timing references will advertise different synchronization metrics.
摘要翻译：第一无线节点可以将其时隙与先前以相对于第一无线节点的时隙的异步方式发送和接收数据的第二无线节点的时隙同步。通过同步时隙，无线节点可以避免无线节点以异步方式操作时可能发生的干扰。无线节点通过与定义定时参考的相对优先级的同步度量重复地发送定时参考信号，与其他无线节点共享其定时信息。在无线节点不接收基于GPS的定时参考的情况下，无线节点可以基于该定时参考的同步度量的参数来同步到定时参考。在无线节点没有接收任何定时参考的情况下，无线节点可以定义并通告它是定时参考和相关联的同步度量。为了避免同步竞争条件，可以定义同步度量，使得具有不同定时参考的无线节点将通告不同的同步度量。

35. 发明授权

US09037155B2 Time of arrival (TOA) estimation for positioning in a wireless communication network 有权
标题翻译：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。

36. 发明授权

US08014277B2 Restricting time slots for mesh networks 有权
标题翻译：限制网状网络的时隙
公开(公告)号：US08014277B2
公开(公告)日：2011-09-06
申请号：US11560092
申请日：2006-11-15
申请人： David Jonathan Julian , Avneesh Agrawal , Ashwin Sampath , Gavin Horn
发明人： David Jonathan Julian , Avneesh Agrawal , Ashwin Sampath , Gavin Horn
IPC分类号： H04J1/16
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。

37. 发明授权

US08401111B2 Method and apparatus for sequencing and correlating a positioning reference signal 有权
标题翻译：用于对定位参考信号进行排序和关联的方法和装置
公开(公告)号：US08401111B2
公开(公告)日：2013-03-19
申请号：US12722395
申请日：2010-03-11
申请人： Ashwin Sampath , Ravi Palanki , Aamod D. Khandekar , Raja Sekhar Bachu
发明人： Ashwin Sampath , Ravi Palanki , Aamod D. Khandekar , Raja Sekhar Bachu
IPC分类号： H04L27/00
CPC分类号： H04W64/00 , G01S1/042 , G01S1/24 , G01S5/0226
摘要： Aspects are disclosed for sequencing and correlating a positioning reference signal. A set of reference symbols associated with a reference signal are allocated, and a base sequence is generated. An extended sequence, which includes the set of reference symbols, is then provided according to the base sequence. The extended sequence is then transmitted in a sub-frame designated as an idle period. A sequence of reference symbols is received from a base station during an idle period of the base station. A replicated sequence of reference symbols is generated, and a correlation is ascertained between a subset of the received sequence of reference symbols and a corresponding subset of the replicated sequence of reference symbols. The received sequence of reference symbols is then identified according to the correlation.
摘要翻译：公开了用于对定位参考信号进行排序和关联的方面。分配与参考信号相关联的一组参考符号，并生成基本序列。然后根据基本序列提供包括参考符号集合的扩展序列。扩展序列然后在指定为空闲时段的子帧中传输。在基站的空闲周期期间，从基站接收到一系列参考符号。生成参考符号的复制序列，并且在所接收的参考符号序列的子集与参考符号的复制序列的对应子集之间确定相关性。然后根据相关性来识别所接收的参考符号序列。

38. 发明申请

US20100232543A1 METHOD AND APPARATUS FOR SEQUENCING AND CORRELATING A POSITIONING REFERENCE SIGNAL 有权
标题翻译：用于顺序和相关定位参考信号的方法和装置
公开(公告)号：US20100232543A1
公开(公告)日：2010-09-16
申请号：US12722395
申请日：2010-03-11
申请人： Ashwin Sampath , Ravi Palanki , Aamod D. Khandekar , Raja Sekhar Bachu
发明人： Ashwin Sampath , Ravi Palanki , Aamod D. Khandekar , Raja Sekhar Bachu
IPC分类号： H04L27/00
CPC分类号： H04W64/00 , G01S1/042 , G01S1/24 , G01S5/0226
摘要： Aspects are disclosed for sequencing a positioning reference signal. A set of reference symbols associated with a reference signal are allocated, and a base sequence is generated. An extended sequence, which includes the set of reference symbols, is then provided according to the base sequence. The extended sequence is then transmitted in a sub-frame designated as an idle period. Aspects for correlating a positioning reference signal are also disclosed. A sequence of reference symbols is received from a base station during an idle period of the base station. A replicated sequence of reference symbols is generated, and a correlation is ascertained between a subset of the received sequence of reference symbols and a corresponding subset of the replicated sequence of reference symbols. The received sequence of reference symbols is then identified according to the correlation.
摘要翻译：公开了用于对定位参考信号进行排序的方面。分配与参考信号相关联的一组参考符号，并生成基本序列。然后根据基本序列提供包括参考符号集合的扩展序列。扩展序列然后在指定为空闲时段的子帧中传输。还公开了用于使定位参考信号相关的方面。在基站的空闲周期期间，从基站接收到一系列参考符号。生成参考符号的复制序列，并且在所接收的参考符号序列的子集与参考符号的复制序列的对应子集之间确定相关性。然后根据相关性来识别所接收的参考符号序列。

39. 发明申请

US20100142365A1 BEACON CODING IN WIRELESS COMMUNICATIONS SYSTEMS 有权
标题翻译：无线通信系统中的信标编码
公开(公告)号：US20100142365A1
公开(公告)日：2010-06-10
申请号：US12446728
申请日：2007-10-26
申请人： Thomas Richardson , Husheng Li , Junyi Li , Alexandar Leonidov , Rajiv Laroia , Ravi Palanki , Gavin Horn , Ashwin Sampath
发明人： Thomas Richardson , Husheng Li , Junyi Li , Alexandar Leonidov , Rajiv Laroia , Ravi Palanki , Gavin Horn , Ashwin Sampath
IPC分类号： H04W72/04 , H04J3/00
CPC分类号： H04L27/10 , H04L1/0045 , H04L5/0053 , H04L5/0091
摘要： Systems and methodologies are described that facilitate transmitting beacon symbols of a beacon message such that a sequence of symbols can satisfy a linear constraint over a field where the field elements can be identified with carriers. In this regard, a coding scheme can be applied to a beacon message; the coding scheme can produce a plurality of beacon symbols to transmit on given subcarriers. A receiving device of the beacon symbols can decode a beacon message by receiving less than the total number of symbols in a beacon message and determining the remaining symbol subcarriers based on the linear constraint. Thus, more efficient decoding of beacons is facilitated as well as resolving beacon ambiguity by figuring out which symbols satisfy linear constraints for the symbols, and resolving time and frequency shift by detecting an offset that would result in satisfaction of the linear constraint.
摘要翻译：描述了促进发送信标消息的信标符号的系统和方法，使得符号序列可以满足可以用载波识别场元素的场的线性约束。在这方面，编码方案可以应用于信标消息; 编码方案可以产生多个信标符号，以在给定子载波上进行传输。信标符号的接收设备可以通过接收小于信标消息中的总符号数来解码信标消息，并且基于线性约束确定剩余的符号子载波。因此，有助于信标的更有效的解码以及通过找出哪些符号满足符号的线性约束来解析信标模糊度，以及通过检测将导致满足线性约束的偏移来解决时间和频率偏移。

40. 发明授权

US09178732B2 Beacon coding in wireless communications systems 有权
标题翻译：无线通信系统中的信标编码
公开(公告)号：US09178732B2
公开(公告)日：2015-11-03
申请号：US12446728
申请日：2007-10-26
申请人： Thomas Richardson , Husheng Li , Junyi Li , Alexander Leonidov , Rajiv Laroia , Ravi Palanki , Gavin Horn , Ashwin Sampath
发明人： Thomas Richardson , Husheng Li , Junyi Li , Alexander Leonidov , Rajiv Laroia , Ravi Palanki , Gavin Horn , Ashwin Sampath
IPC分类号： H04W72/04 , H04J3/00 , H04L27/10 , H04L1/00 , H04L5/00
CPC分类号： H04L27/10 , H04L1/0045 , H04L5/0053 , H04L5/0091
摘要： Systems and methodologies are described that facilitate transmitting beacon symbols of a beacon message such that a sequence of symbols can satisfy a linear constraint over a field where the field elements can be identified with carriers. In this regard, a coding scheme can be applied to a beacon message; the coding scheme can produce a plurality of beacon symbols to transmit on given subcarriers. A receiving device of the beacon symbols can decode a beacon message by receiving less than the total number of symbols in a beacon message and determining the remaining symbol subcarriers based on the linear constraint. Thus, more efficient decoding of beacons is facilitated as well as resolving beacon ambiguity by figuring out which symbols satisfy linear constraints for the symbols, and resolving time and frequency shift by detecting an offset that would result in satisfaction of the linear constraint.
摘要翻译：描述了促进发送信标消息的信标符号的系统和方法，使得符号序列可以满足可以用载波识别场元素的场的线性约束。在这方面，编码方案可以应用于信标消息; 编码方案可以产生多个信标符号，以在给定子载波上进行传输。信标符号的接收设备可以通过接收小于信标消息中的总符号数来解码信标消息，并且基于线性约束确定剩余的符号子载波。因此，有助于信标的更有效的解码以及通过找出哪些符号满足符号的线性约束来解析信标模糊度，以及通过检测将导致满足线性约束的偏移来解决时间和频率偏移。

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