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61. 发明申请

US20100165851A1 RF CHANNEL SWITCHING IN BROADCAST OFDM SYSTEMS 有权
标题翻译：广播OFDM系统中的RF信道切换
公开(公告)号：US20100165851A1
公开(公告)日：2010-07-01
申请号：US12722308
申请日：2010-03-11
申请人： Linbo Li , Ashok Mantravadi , Fuyun Ling , Raghuraman Krishnamoorthi
发明人： Linbo Li , Ashok Mantravadi , Fuyun Ling , Raghuraman Krishnamoorthi
IPC分类号： H04W4/00 , H04B17/00 , H04L12/26
CPC分类号： H04W48/16
摘要： Systems and methodologies are described that facilitate monitoring RF channels in a wireless communication environment to determine whether one or more channels comprise a forward-link-only (FLO) signal. A receiver can receive a first RF channel with a FLO signal and can monitor other RF channels for FLO signals. Upon a determination that a monitored RF channel comprises a FLO signal, the receiver can switch between the first RF channel and the monitored RF channel to facilitate providing seamless reception of the FLO signal, which can be superframe synchronized between RF channels. FLO signal detection can be performed using one or more of a wide-area identification channel energy detection protocol and a wide-area overhead information symbol decoding error detection protocol.
摘要翻译：描述了便于在无线通信环境中监视RF信道以确定一个或多个信道是包括仅前向链路（FLO）信号的系统和方法。接收机可以接收具有FLO信号的第一RF信道，并且可以监视FLO信号的其他RF信道。在确定被监视的RF信道包括FLO信号之后，接收机可以在第一RF信道和所监视的RF信道之间切换，以便于提供FLO信号的无缝接收，FLO信号可以在RF信道之间超帧同步。可以使用广域识别信道能量检测协议和广域开销信息符号解码错误检测协议中的一个或多个来执行FLO信号检测。

62. 发明申请

US20090080378A1 Methods and Apparatus for RF Channel Switching in a Multi-Frequency Network 有权
标题翻译：用于多频网络中RF信道切换的方法和装置
公开(公告)号：US20090080378A1
公开(公告)日：2009-03-26
申请号：US12055981
申请日：2008-03-26
申请人： Binita Gupta , An Mei Chen , Linbo Li , Raghuraman Krishnamoorthi , Ashok Mantravadi
发明人： Binita Gupta , An Mei Chen , Linbo Li , Raghuraman Krishnamoorthi , Ashok Mantravadi
IPC分类号： H04W40/02
CPC分类号： H04W72/005 , H04H20/06 , H04H20/22 , H04H20/42 , H04L5/0023 , H04L5/0037 , H04L5/0091 , H04W16/02
摘要： Methods and apparatus for RF channel switching in a multi-frequency network. In an aspect, a method includes identifying a local area operations infrastructure (LOI) in the multi-frequency network, generating a channel description message that associates at least one descrambling sequence identifier with each RF channel associated with the LOI, respectively, and distributing the CDM over the LOI. In another aspect, a method includes receiving a CDM that associates at least one descrambling sequence identifier with each RF channel available in a LOI, detecting an RF channel switch event that identifies a selected RF channel, determining a selected descrambling sequence identifier from the CDM based on the selected RF channel, switching to the selected RF channel wherein the selected descrambling sequence identifier identifies a selected descrambling sequence to descramble desired content carried on the selected RF channel, and acquiring the desired content on the selected RF channel.
摘要翻译：多频网络中RF信道切换的方法和装置。一方面，一种方法包括识别多频网络中的局域操作基础结构（LOI），生成分别将至少一个解扰序列标识符与与LOI相关联的每个RF信道相关联的信道描述消息，并分发 CDM超过LOI。在另一方面，一种方法包括接收将至少一个解扰序列标识符与LOI中可用的每个RF信道相关联的CDM，检测识别所选RF信道的RF信道切换事件，从基于CDM确定所选解扰序列标识符在所选择的RF信道上，切换到所选择的RF信道，其中所选择的解扰序列标识符识别所选择的解扰序列，以对所选择的RF信道上承载的期望内容进行解扰，以及在所选择的RF信道上获取所需的内容。

63. 发明申请

US20090029705A1 Methods and Apparatus for Service Acquisition in a Multi-Frequency Network 有权
标题翻译：多频网络服务采集方法与设备
公开(公告)号：US20090029705A1
公开(公告)日：2009-01-29
申请号：US12141840
申请日：2008-06-18
申请人： Binita Gupta , Linbo Li , Raghuraman Krishnamoorthi , Ashok Mantravadi
发明人： Binita Gupta , Linbo Li , Raghuraman Krishnamoorthi , Ashok Mantravadi
IPC分类号： H04W36/00 , H04B1/18
CPC分类号： H04W48/18 , H04W28/18
摘要： Methods and apparatus for service acquisition in a multi-frequency network. In an aspect, a method is provided for service acquisition in a multi-frequency network. The method includes detecting a service acquisition trigger event and identifying a selected RF channel from an acquisition RF list based on signal strength, wherein the acquisition RF list identifies RF channels in one or more local operations infrastructures (LOIs) of the multi-frequency network. The method also includes acquiring a wide system on the selected RF channel, removing the selected RF channel from the acquisition RF list if the wide system can not be acquired on the selected RF channel, and repeating said operations of identifying, acquiring and removing until the wide system is acquired on the selected RF channel or a system acquisition timeout occurs.
摘要翻译：多频网络服务采集方法与装置。在一方面，提供了一种用于多频网络中的服务获取的方法。该方法包括基于信号强度检测服务获取触发事件和从获取RF列表识别所选择的RF信道，其中所述获取RF列表识别所述多频网络的一个或多个本地操作基础设施（LOI）中的RF信道。该方法还包括在所选择的RF信道上获取宽系统，如果在所选择的RF信道上不能获取宽系统，则从获取RF列表中移除所选择的RF信道，并重复所述识别，获取和去除的操作，直到在所选择的RF信道上获取宽系统，或发生系统采集超时。

64. 发明授权

US08457064B2 Methods and apparatus for RF handoff in a multi-frequency network 失效
标题翻译：多频网络中RF切换的方法和装置
公开(公告)号：US08457064B2
公开(公告)日：2013-06-04
申请号：US12051758
申请日：2008-03-19
申请人： Binita Gupta , Linbo Li , Raghuraman Krishnamoorthi , Ashok Mantravadi
发明人： Binita Gupta , Linbo Li , Raghuraman Krishnamoorthi , Ashok Mantravadi
IPC分类号： H04W4/00
CPC分类号： H04W36/30 , H04W36/0055 , H04W72/005
摘要： Methods and apparatus for RF handoff in a multi-frequency network. A method includes generating seamless and partially seamless handoff tables for multiplexes carried in a current LOI, wherein the seamless and partially seamless handoff tables comprise neighboring RF channels carrying one or more of the multiplexes in the current LOI, detecting a handoff event initiated by acquisition failures on a current RF, selecting a selected RF channel from the seamless and partially seamless handoff tables, and performing a handoff to the selected RF channel. An apparatus includes processing logic configured to generate the seamless and partially seamless handoff tables, detect a handoff event initiated by acquisition failures on a current RF, and select a selected RF channel from the seamless and partially seamless handoff tables. The apparatus also includes channel switch logic configured to perform a handoff to the selected RF channel.
摘要翻译：多频网络中RF切换的方法和装置。一种方法包括为当前LOI中携带的多路复用产生无缝和部分无缝切换表，其中无缝和部分无缝切换表包括在当前LOI中携带一个或多个多路复用的相邻RF信道，检测由采集失败发起的切换事件在当前RF上，从无缝和部分无缝切换表中选择所选择的RF信道，以及对所选择的RF信道执行切换。一种装置包括处理逻辑，其被配置为生成无缝和部分无缝切换表，检测由当前RF获取故障引发的切换事件，以及从无缝和部分无缝切换表中选择所选择的RF信道。该装置还包括被配置为执行到所选择的RF信道的切换的信道切换逻辑。

65. 发明申请

US20090016380A1 Methods and Apparatus for RF Channel Switching in a Multi-Frequency Network 失效
标题翻译：用于多频网络中RF信道切换的方法和装置
公开(公告)号：US20090016380A1
公开(公告)日：2009-01-15
申请号：US12051209
申请日：2008-03-19
申请人： Binita Gupta , An Mei Chen , Devarshi Shah , Linbo Li , Raghuraman Krishnamoorthi , Ashok Mantravadi , Taoufik Tani
发明人： Binita Gupta , An Mei Chen , Devarshi Shah , Linbo Li , Raghuraman Krishnamoorthi , Ashok Mantravadi , Taoufik Tani
IPC分类号： H04J1/00
CPC分类号： H04W76/11 , H04W48/12 , H04W72/02 , H04W76/15
摘要： Methods and apparatus for RF channel switching in a multi-frequency network. In an aspect, a method includes identifying a multiplex set that comprises one or more content flows, wherein the multiplex set is one of a vertical multiplex (VM) set and a unified multiplex (UM) set, generating an overhead message that associates one or more RF carrier frequencies with the one or more content flows, and transmitting the overhead message over the multi-frequency network. An apparatus includes input logic configured to receive an overhead message that associates one or more content flows with one or more RF carrier frequencies, and processing logic configured to detect a channel switch event that identifies a selected content flow, determine a selected RF carrier frequency associated with the selected content flow based on the overhead message, and switch to the selected RF carrier frequency to receive the selected content flow.
摘要翻译：多频网络中RF信道切换的方法和装置。一方面，一种方法包括识别包括一个或多个内容流的多路复用集合，其中多路复用集合是垂直多路复用（VM）集合和统一多路复用（UM）集合之一，生成将开销消息与一个或多个内容流相关联的开销消息，具有一个或多个内容流的更多RF载波频率，以及通过多频网络发送开销消息。一种装置包括输入逻辑，其被配置为接收将一个或多个内容流与一个或多个RF载波频率相关联的开销消息，以及被配置为检测识别所选内容流的信道切换事件的处理逻辑，确定所选择的RF载波频率相关联所选择的内容流程基于开销消息，并且切换到所选择的RF载波频率以接收所选择的内容流。

66. 发明授权

US09554319B2 Channel handoff methods in wireless broadcast systems 有权
标题翻译：无线广播系统中的信道切换方法
公开(公告)号：US09554319B2
公开(公告)日：2017-01-24
申请号：US11828333
申请日：2007-07-25
申请人： Linbo Li , Ashok Mantravadi , Fuyun Ling , Raghuraman Krishnamoorthi
发明人： Linbo Li , Ashok Mantravadi , Fuyun Ling , Raghuraman Krishnamoorthi
IPC分类号： H04Q7/20 , H04W36/28 , H04W36/30 , H04W72/08
CPC分类号： H04W36/28 , H04W36/30 , H04W72/085
摘要： Systems and methodologies are described that facilitate monitoring RF channels in a wireless communication environment to determine whether one or more channels comprise a forward-link-only (FLO) signal. A receiver can receive a first RF channel with a FLO signal and can monitor other RF channels for FLO signals. Upon a determination that a monitored RF channel comprises a FLO signal, the receiver can switch between the first RF channel and the monitored RF channel, employing information on current MLC decoding status, to facilitate providing seamless reception of the FLO signal, which can be superframe synchronized between RF channels. FLO signal detection can be performed using one or more of a wide-area identification channel energy detection protocol and a wide-area overhead information symbol decoding error detection protocol.
摘要翻译：描述了便于在无线通信环境中监视RF信道以确定一个或多个信道是包括仅前向链路（FLO）信号的系统和方法。接收机可以接收具有FLO信号的第一RF信道，并且可以监视FLO信号的其他RF信道。在确定被监视的RF信道包括FLO信号之后，接收机可以使用关于当前MLC解码状态的信息在第一RF信道和被监控的RF信道之间切换，以便于提供FLO信号的无缝接收，其可以是超帧在RF信道之间同步。可以使用广域识别信道能量检测协议和广域开销信息符号解码错误检测协议中的一个或多个来执行FLO信号检测。

67. 发明授权

US08422477B2 Methods and apparatus for RF channel switching in a multi-frequency network 有权
标题翻译：多频网络中RF信道切换的方法和装置
公开(公告)号：US08422477B2
公开(公告)日：2013-04-16
申请号：US12055981
申请日：2008-03-26
申请人： Binita Gupta , An Mei Chen , Linbo Li , Raghuraman Krishnamoorthi , Ashok Mantravadi
发明人： Binita Gupta , An Mei Chen , Linbo Li , Raghuraman Krishnamoorthi , Ashok Mantravadi
IPC分类号： H04J1/00
CPC分类号： H04W72/005 , H04H20/06 , H04H20/22 , H04H20/42 , H04L5/0023 , H04L5/0037 , H04L5/0091 , H04W16/02
摘要： Methods and apparatus for RF channel switching in a multi-frequency network. In an aspect, a method includes identifying a local area operations infrastructure (LOI) in the multi-frequency network, generating a channel description message that associates at least one descrambling sequence identifier with each RF channel associated with the LOI, respectively, and distributing the CDM over the LOI. In another aspect, a method includes receiving a CDM that associates at least one descrambling sequence identifier with each RF channel available in a LOI, detecting an RF channel switch event that identifies a selected RF channel, determining a selected descrambling sequence identifier from the CDM based on the selected RF channel, switching to the selected RF channel wherein the selected descrambling sequence identifier identifies a selected descrambling sequence to descramble desired content carried on the selected RF channel, and acquiring the desired content on the selected RF channel.
摘要翻译：多频网络中RF信道切换的方法和装置。一方面，一种方法包括识别多频网络中的局域操作基础结构（LOI），生成分别将至少一个解扰序列标识符与与LOI相关联的每个RF信道相关联的信道描述消息，并分发 CDM超过LOI。在另一方面，一种方法包括接收将至少一个解扰序列标识符与LOI中可用的每个RF信道相关联的CDM，检测识别所选RF信道的RF信道切换事件，从基于CDM确定所选解扰序列标识符在所选择的RF信道上，切换到所选择的RF信道，其中所选择的解扰序列标识符识别所选择的解扰序列，以对所选择的RF信道上承载的期望内容进行解扰，以及在所选择的RF信道上获取所需的内容。

68. 发明申请

US20100158160A1 EXTRACTING INFORMATION FROM POSITIONING PILOT CHANNEL SYMBOLS IN FORWARD LINK ONLY SYSTEM 审中-公开
标题翻译：从前进链接系统中的定位导频信号提取信息
公开(公告)号：US20100158160A1
公开(公告)日：2010-06-24
申请号：US12643664
申请日：2009-12-21
申请人： KRISHNA K. MUKKAVILLI , Raghuraman Krishnamoorthi , Ashok Mantravadi
发明人： KRISHNA K. MUKKAVILLI , Raghuraman Krishnamoorthi , Ashok Mantravadi
IPC分类号： H04L27/06
CPC分类号： H04L27/2647 , H04L25/0212 , H04L25/022 , H04L25/023
摘要： Methods, systems, and apparatus, including computer programs encoded on computer readable storage media, for extracting transmitter identification information from the Positioning Pilot Channel (PPC) of a MediaFLO superframe. One of a wide area differentiator (WID) value and a local area differentiator (LID) value associated with the transmitter is determined based on signaling in a first interlace of a symbol received via the PPC. A time domain channel estimate is computed for the PPC based on signaling in a plurality of interlaces of the symbol and also based on the one of the WID and LID values. The time domain channel estimate is used to obtain a frequency domain channel estimate for a second interlace of the symbol that carries the transmitter identification information, and the frequency domain channel estimate is used to determine the transmitter identification information.
摘要翻译：方法，系统和装置，包括在计算机可读存储介质上编码的计算机程序，用于从MediaFLO超帧的定位导频信道（PPC）提取发射机识别信息。基于经由PPC接收的符号的第一交错中的信令来确定与发送器相关联的广域微分器（WID）值和局部区域微分器（LID）值之一。基于符号的多个交织中的信令，并且还基于WID和LID值中的一个来计算PPC的时域信道估计。使用时域信道估计来获得携带发射机识别信息的符号的第二交错的频域信道估计，并且使用频域信道估计来确定发射机识别信息。

69. 发明申请

US20080242225A1 APPARATUS AND METHODS FOR TESTING USING MODULATION ERROR RATIO 失效
标题翻译：使用调制错误比例进行测试的装置和方法
公开(公告)号：US20080242225A1
公开(公告)日：2008-10-02
申请号：US11834679
申请日：2007-08-06
申请人： Raghuraman Krishnamoorthi , Thomas Sun , Ashok Mantravadi
发明人： Raghuraman Krishnamoorthi , Thomas Sun , Ashok Mantravadi
IPC分类号： H04B17/02
CPC分类号： H04L1/206 , H04L1/24 , H04L27/2626 , H04L2001/0097
摘要： Apparatus and methods are disclosed for testing or qualifying a repeater/transmitter in a multicarrier system by utilizing modulation error ratio (MER). In particular, a disclosed method includes determining an estimated effective modulation error ratio of an output of the repeater/transmitter. The estimated effective modulation error ratio is compared with a predetermined threshold, and the repeater/transmitter is qualified when the estimated effective modulation error ratio is greater than the predetermined threshold. Using an estimated modulation error ratio for repeater/transmitters, which can have non-flat modulation error ratios over a total number of subcarriers, affords an efficient method to test and qualify repeater/transmitters.
摘要翻译：公开了用于通过利用调制误差比（MER）在多载波系统中测试或限定中继器/发射机的装置和方法。具体地，所公开的方法包括确定中继器/发射机的输出的估计有效调制误差比。将估计的有效调制误差比与预定阈值进行比较，并且当估计的有效调制误差比大于预定阈值时，中继器/发射机被限定。对于可能在副载波总数上具有非平坦调制误差比的中继器/发射机使用估计的调制误差率，提供了测试和限定中继器/发射机的有效方法。

70. 发明申请

US20080020751A1 CHANNEL MONITORING METHODS IN A WIRELESS BROADCAST SYSTEM 审中-公开
标题翻译：无线广播系统中的信道监测方法
公开(公告)号：US20080020751A1
公开(公告)日：2008-01-24
申请号：US11828336
申请日：2007-07-25
申请人： Linbo Li , Ashok Mantravadi , Fuyun Ling , Raghuraman Krishnamoorthi
发明人： Linbo Li , Ashok Mantravadi , Fuyun Ling , Raghuraman Krishnamoorthi
IPC分类号： H04Q7/20
CPC分类号： H04W72/005
摘要： Systems and methodologies are described that facilitate monitoring RF channels in a wireless communication environment to determine whether one or more channels comprise a forward-link-only (FLO) signal. A receiver can receive a first RF channel with a FLO signal and can monitor other RF channels for FLO signals. Upon a determination that a monitored RF channel comprises a FLO signal, the receiver can switch between the first RF channel and the monitored RF channel. FLO signal detection can be performed using one or more of a wide-area identification channel energy detection protocol and a wide-area overhead information symbol decoding error detection protocol.
摘要翻译：描述了便于在无线通信环境中监视RF信道以确定一个或多个信道是包括仅前向链路（FLO）信号的系统和方法。接收机可以接收具有FLO信号的第一RF信道，并且可以监视FLO信号的其他RF信道。在确定被监视的RF信道包括FLO信号之后，接收机可以在第一RF信道和所监视的RF信道之间切换。可以使用广域识别信道能量检测协议和广域开销信息符号解码错误检测协议中的一个或多个来执行FLO信号检测。

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