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61. 发明申请

US20070167181A1 MOBILE STATION FOR OPERATING IN A BROADCAST-CENTRIC CELLULAR COMMUNICATION SYSTEM 有权
标题翻译：在广播中心细胞通信系统中操作的移动站
公开(公告)号：US20070167181A1
公开(公告)日：2007-07-19
申请号：US11380476
申请日：2006-04-27
申请人： Rajaram Ramesh , Kambiz Zangi , Kumar Balachandran
发明人： Rajaram Ramesh , Kambiz Zangi , Kumar Balachandran
IPC分类号： H04B7/00
CPC分类号： H04W48/12 , H04W4/06 , H04W48/10 , H04W56/00
摘要： A mobile station for operating in a broadcast-centric cellular communication system. The system improves broadcast channel performance by exploiting the benefits of macro-diversity in a cellular communication system having a plurality of base stations that transmit signals within a plurality of associated cells. System-specific control information common to all cells is synchronously and simultaneously broadcast from multiple base stations using a broadcast channel that is identical across the entire system. Cell-specific control information is transmitted individually from each base station. The mobile station uses the broadcast information for initial synchronization to the system, and to obtain most relevant system information. After system synchronization, the mobile station identifies the connected cell through a physical layer characteristic, and performs initial access to the system.
摘要翻译：一种用于在以广播为中心的蜂窝通信系统中操作的移动台。该系统通过利用具有在多个相关联的小区内发送信号的多个基站的蜂窝通信系统中的宏分集的优点来改善广播信道性能。使用在整个系统中相同的广播信道，从多个基站同步并同时广播所有小区公用的系统特定的控制信息。每个基站单独发送小区特定的控制信息。移动台使用广播信息进行系统的初始同步，并获得最相关的系统信息。在系统同步之后，移动台通过物理层特性识别连接的小区，并对系统进行初始访问。

62. 发明授权

US08855086B2 Method and apparatus for efficient multimedia delivery in a wireless packet network 有权
标题翻译：用于无线分组网络中高效多媒体传送的方法和装置
公开(公告)号：US08855086B2
公开(公告)日：2014-10-07
申请号：US13402344
申请日：2012-02-22
申请人： Rajaram Ramesh , Kumar Balachandran , Tomas Frankkila
发明人： Rajaram Ramesh , Kumar Balachandran , Tomas Frankkila
IPC分类号： H04J3/00 , H04L29/06
CPC分类号： H04L65/605 , H04L65/103 , H04L65/80
摘要： The present invention sends multiple versions of a multimedia packet to the base station, and, based on the radio channel and traffic characteristics, an appropriate version of the multimedia packet is selected to send to the mobile station at a given time. In this way, source transmission is improved to instantaneous conditions. The steps of the present invention are performed in conjunction with RTP used for multimedia transmission over internet protocol (IP) networks. In a first embodiment, the multiple versions are sent to the base station in the same RTP packet, and the base station strips out the extraneous versions. In a second embodiment, the base station receives multiple RTP packets having identical information in the packet header in many fields, and selects an appropriate one among these for transmission to the mobile station, discarding the rest.
摘要翻译：本发明向基站发送多个版本的多媒体分组，并且基于无线电信道和业务特性，选择适当版本的多媒体分组以在给定时间向移动台发送。以这种方式，源传输被改进到瞬时条件。本发明的步骤与用于通过因特网协议（IP）网络的多媒体传输的RTP一起执行。在第一实施例中，多个版本在相同的RTP分组中发送到基站，并且基站剥离外部版本。在第二实施例中，基站在多个字段中在分组报头中接收到具有相同信息的多个RTP分组，并且选择其中适当的一个用于传输到移动台，丢弃其余的分组。

63. 发明申请

US20120147860A1 METHOD AND APPARATUS FOR EFFICIENT MULTIMEDIA DELIVERY IN A WIRELESS PACKET NETWORK 有权
标题翻译：无线数据包网络中高效多媒体传输的方法与装置
公开(公告)号：US20120147860A1
公开(公告)日：2012-06-14
申请号：US13402344
申请日：2012-02-22
申请人： Rajaram Ramesh , Kumar Balachandran , Tomas Frankkila
发明人： Rajaram Ramesh , Kumar Balachandran , Tomas Frankkila
IPC分类号： H04W72/04 , H04J3/00 , H04W4/00
CPC分类号： H04L65/605 , H04L65/103 , H04L65/80
摘要： The present invention sends multiple versions of a multimedia packet to the base station, and, based on the radio channel and traffic characteristics, an appropriate version of the multimedia packet is selected to send to the mobile station at a given time. In this way, source transmission is improved to instantaneous conditions. The steps of the present invention are performed in conjunction with RTP used for multimedia transmission over internet protocol (IP) networks. In a first embodiment, the multiple versions are sent to the base station in the same RTP packet, and the base station strips out the extraneous versions. In a second embodiment, the base station receives multiple RTP packets having identical information in the packet header in many fields, and selects an appropriate one among these for transmission to the mobile station, discarding the rest.
摘要翻译：本发明向基站发送多个版本的多媒体分组，并且基于无线电信道和业务特性，选择适当版本的多媒体分组在给定时间向移动台发送。以这种方式，源传输被改进到瞬时条件。本发明的步骤与用于通过因特网协议（IP）网络的多媒体传输的RTP一起执行。在第一实施例中，多个版本在相同的RTP分组中发送到基站，并且基站剥离外部版本。在第二实施例中，基站在多个字段中在分组报头中接收到具有相同信息的多个RTP分组，并且选择其中适当的一个用于传输到移动台，丢弃其余的分组。

64. 发明授权

US07274935B2 Method and base station controller for handover of simultaneous voice and data sessions 有权
标题翻译：用于同时进行语音和数据会话切换的方法和基站控制器
公开(公告)号：US07274935B2
公开(公告)日：2007-09-25
申请号：US11176652
申请日：2005-07-07
申请人： Kumar Balachandran , Rajaram Ramesh
发明人： Kumar Balachandran , Rajaram Ramesh
IPC分类号： H04Q7/20
CPC分类号： H04W36/0033
摘要： A method and base station controller (BSC) in a GPRS/EDGE cellular radio telecommunication system for controlling a handover of a mobile station (MS) conducting both a circuit-switched call and a packet data session, and for rapidly reestablishing the packet data session. The BSC determines from measurement reports that a handover of the MS is imminent. The BSC sends both packet system information and Dual Transfer Mode (DTM) information relevant in the target cell to the MS prior to a handover command. When the handover is complete, the BSC may also send a pseudo cell update message to a serving SGSN. The message includes an identifier of the MS and appears to the SGSN to be from the MS. After the circuit-switched call is reconnected, the packet data session is rapidly reestablished utilizing the information sent to the mobile station prior to the handover command, and without having to send a cell update message from the MS.
摘要翻译： GPRS / EDGE蜂窝无线电通信系统中的方法和基站控制器（BSC），用于控制进行电路交换呼叫和分组数据会话的移动台（MS）的切换，并且用于快速重新建立分组数据会话。 BSC从测量报告中确定MS的切换即将来临。在切换命令之前，BSC将目标小区中相关的分组系统信息和双传输模式（DTM）信息发送到MS。当切换完成时，BSC还可以向服务SGSN发送伪小区更新消息。消息包括MS的标识符，并且向SGSN显示来自MS。在重新连接电路交换呼叫之后，利用在切换命令之前发送到移动台的信息，并且不必从MS发送小区更新消息，迅速重新建立分组数据会话。

65. 发明申请

US20070167159A1 BROADCAST-CENTRIC CELLULAR COMMUNICATION SYSTEM, METHOD, AND MOBILE STATION 审中-公开
标题翻译：广播中心蜂窝通信系统，方法和移动站
公开(公告)号：US20070167159A1
公开(公告)日：2007-07-19
申请号：US11380478
申请日：2006-04-27
申请人： Rajaram Ramesh , Kambiz Zangi , Kumar Balachandran
发明人： Rajaram Ramesh , Kambiz Zangi , Kumar Balachandran
IPC分类号： H04Q7/20
CPC分类号： H04W68/10 , H04B7/022
摘要： A broadcast-centric cellular communication system improves broadcast channel performance by exploiting the benefits of macro-diversity in a cellular communication system having a plurality of base stations that transmit signals within a plurality of associated cells. The system constructs an identical paging signal at the plurality of base stations, and controls the base stations to simultaneously transmit the identical paging signal. A mobile station camps on a paging channel that is common to the plurality of base stations, and listens to paging messages being simultaneously broadcast by the plurality of base stations. The mobile station selects a base station having a suitable signal quality, and transmits to the selected base station, a response to a paging message addressed to the mobile station.
摘要翻译：以广播为中心的蜂窝通信系统通过利用具有在多个关联小区内发送信号的多个基站的蜂窝通信系统中的宏分集的益处来改善广播信道性能。该系统在多个基站处构造相同的寻呼信号，并且控制基站同时发送相同的寻呼信号。移动台驻留在多个基站共用的寻呼信道上，并且收听由多个基站同时广播的寻呼消息。移动站选择具有适当信号质量的基站，并向所选择的基站发送对寻址到移动台的寻呼消息的响应。

66. 发明申请

US20070010252A1 Method and base station controller for handover of simultaneous voice and data sessions 有权
公开(公告)号：US20070010252A1
公开(公告)日：2007-01-11
申请号：US11176652
申请日：2005-07-07
申请人： Kumar Balachandran , Rajaram Ramesh
发明人： Kumar Balachandran , Rajaram Ramesh
IPC分类号： H04Q7/20
CPC分类号： H04W36/0033
摘要： A method and base station controller (BSC) in a GPRS/EDGE cellular radio telecommunication system for controlling a handover of a mobile station (MS) conducting both a circuit-switched call and a packet data session, and for rapidly reestablishing the packet data session. The BSC determines from measurement reports that a handover of the MS is imminent. The BSC sends both packet system information and Dual Transfer Mode (DTM) information relevant in the target cell to the MS prior to a handover command. When the handover is complete, the BSC may also send a pseudo cell update message to a serving SGSN. The message includes an identifier of the MS and appears to the SGSN to be from the MS. After the circuit-switched call is reconnected, the packet data session is rapidly reestablished utilizing the information sent to the mobile station prior to the handover command, and without having to send a cell update message from the MS.

67. 发明授权

US07142580B1 Systems, methods, and computer program products for providing traffic frequency diversification in a cellular communication system 有权
标题翻译：用于在蜂窝通信系统中提供业务频率多样化的系统，方法和计算机程序产品
公开(公告)号：US07142580B1
公开(公告)日：2006-11-28
申请号：US09695357
申请日：2000-10-24
申请人： Kumar Balachandran , Rajaram Ramesh
发明人： Kumar Balachandran , Rajaram Ramesh
IPC分类号： H04B1/713
CPC分类号： H04W16/12 , H04W16/02
摘要： A mobile terminal and a base station subsystem may communicate by assigning a primary or control frequency to the cell in which the mobile terminal is located and using that control frequency to exchange control information between the mobile terminal and the base station subsystem. The exchange of control information in the cell is constrained to the primary or control frequency. In addition, a plurality of traffic frequencies may be assigned to the cell and used to exchange traffic information between the mobile terminal and the base station subsystem using coordinated frequency hopping. Multi-path fading experienced on diverse, non-contiguous traffic frequency bands may be uncorrelated between the respective bands. Consequently, a code-word carried over a plurality of non-contiguous frequencies may be more likely to experience random, uncorrelated fading, which may improve the signal to noise ratio (SNR) of the signal and, as a result, improve network performance.
摘要翻译：移动终端和基站子系统可以通过向移动终端所在的小区分配主要或控制频率并使用该控制频率来在移动终端和基站子系统之间交换控制信息来进行通信。单元中控制信息的交换被限制在主要或控制频率上。此外，可以将多个业务频率分配给小区，并用于使用协调跳频来在移动终端和基站子系统之间交换业务信息。在不同的，不连续的业务频段上经历的多径衰落在各个频带之间可能是不相关的。因此，携带在多个不连续频率上的码字可能更可能经历随机，不相关的衰落，这可以提高信号的信噪比（SNR），并且因此提高网络性能。

68. 发明授权

US5968198A Decoder utilizing soft information output to minimize error rates 失效
标题翻译：解码器利用软信息输出来最小化错误率
公开(公告)号：US5968198A
公开(公告)日：1999-10-19
申请号：US699101
申请日：1996-08-16
申请人： Amer A. Hassan , Ali S. Khayrallah , Yi-Pin Eric Wang , Kumar Balachandran , Rajaram Ramesh
发明人： Amer A. Hassan , Ali S. Khayrallah , Yi-Pin Eric Wang , Kumar Balachandran , Rajaram Ramesh
IPC分类号： H04L1/00 , H03M13/09 , H03M13/13 , H03M13/15 , H03M13/29 , H03M13/37 , H03M13/45 , H04L1/16 , H04L1/18 , H04L25/06 , H03M13/00
CPC分类号： H04L25/067 , H03M13/13 , H03M13/27 , H03M13/2906 , H03M13/2933 , H03M13/3738 , H03M13/456 , H03M13/6306 , H04L1/0065 , H04L1/0071 , H03M13/09 , H03M13/6331 , H04L1/1809 , H04L1/1816
摘要： A coding system is disclosed wherein the receive side includes a decoder capable of producing, in addition to the hard information decoded output, either or both symbol and/or bit soft information values. For a certain information bit position, a value proportional to the joint probability that a received symbol and the set of all hypothesized transmitted codewords that led to the estimated or detected hard information output is calculated. The calculated probabilities with respect to plural codewords having a zero in that certain information bit position are compared to the calculated probabilities with respect to the plural codewords having a one in that certain information bit position. The result of the comparison provides an indication of whether the hard information output in that same information bit position is more likely a one or a zero. The output soft information values are further processed in comparison to a preset threshold, with instances exceeding the threshold triggering block rejections and/or retransmissions.
摘要翻译：公开了一种编码系统，其中接收端包括能够产生除硬信息解码输出之外的符号和/或位软信息值之一或两者的解码器。对于某个信息位位置，计算与接收到的符号和导致估计或检测到的硬信息输出的所有假设的发送码字的集合的联合概率成比例的值。将具有该特定信息位位置的零的多个码字的计算概率与该特定信息位位置中具有一个的多个码字的计算概率进行比较。比较结果提供了在该相同信息位位置中的硬信息输出是否更可能是一个或零的指示。与预设阈值相比，输出软信息值进一步处理，其中实例超过阈值触发块拒绝和/或重传。

69. 发明授权

US5936978A Shortened fire code error-trapping decoding method and apparatus 失效
标题翻译：消防码错误捕获解码方法和装置
公开(公告)号：US5936978A
公开(公告)日：1999-08-10
申请号：US759614
申请日：1996-12-05
申请人： Rajaram Ramesh , Kumar Balachandran
发明人： Rajaram Ramesh , Kumar Balachandran
IPC分类号： H03M13/17 , H03M13/00
CPC分类号： H03M13/618 , H03M13/175 , H03M13/6502
摘要： An error-trapping decoder is provided that performs right cyclic shifts of a received shortened codeword in a decode shift register. Consequently, the error burst portion of the received codeword is encountered in the register within the length of the shortened code. In other words, the number of right cyclic shifts required by the shift register to encounter the error burst portion of the received word is on the order of the length of the shortened word.
摘要翻译：提供一种错误捕获解码器，其在解码移位寄存器中执行接收到的缩短的码字的循环移位。因此，在缩短代码的长度内在寄存器中遇到接收到的码字的错误突发部分。换句话说，移位寄存器要求的遇到接收到的字的错误突发部分的正确的循环移位的数目是缩短的字的长度的数量级。

70. 发明授权

US08155090B2 Method and apparatus for efficient multimedia delivery in a wireless packet network 有权
标题翻译：用于无线分组网络中高效多媒体传送的方法和装置
公开(公告)号：US08155090B2
公开(公告)日：2012-04-10
申请号：US11933665
申请日：2007-11-01
申请人： Rajaram Ramesh , Kumar Balachandran , Tomas Frankkila
发明人： Rajaram Ramesh , Kumar Balachandran , Tomas Frankkila
IPC分类号： H04J3/00
CPC分类号： H04L65/605 , H04L65/103 , H04L65/80
摘要： The present invention sends multiple versions of a multimedia packet to the base station, and, based on the radio channel and traffic characteristics, an appropriate version of the multimedia packet is selected to send to the mobile station at a given time. In this way, source transmission is improved to instantaneous conditions. The steps of the present invention are performed in conjunction with RTP used for multimedia transmission over internet protocol (IP) networks. In a first embodiment, the multiple versions are sent to the base station in the same RTP packet, and the base station strips out the extraneous versions. In a second embodiment, the base station receives multiple RTP packets having identical information in the packet header in many fields, and selects an appropriate one among these for transmission to the mobile station, discarding the rest.
摘要翻译：本发明向基站发送多个版本的多媒体分组，并且基于无线电信道和业务特性，选择适当版本的多媒体分组以在给定时间向移动台发送。以这种方式，源传输被改进到瞬时条件。本发明的步骤与用于通过因特网协议（IP）网络的多媒体传输的RTP一起执行。在第一实施例中，多个版本在相同的RTP分组中发送到基站，并且基站剥离外部版本。在第二实施例中，基站在多个字段中在分组报头中接收到具有相同信息的多个RTP分组，并且选择其中适当的一个用于传输到移动台，丢弃其余的分组。

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