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1. 发明授权

US08538464B2 Code word assignment methods for quick paging in telecommunication systems 有权
标题翻译：电信系统快速寻呼的码字分配方法
公开(公告)号：US08538464B2
公开(公告)日：2013-09-17
申请号：US12346286
申请日：2008-12-30
申请人： Rajaram Ramesh , Havish Koorapaty , Kumar Balachandran
发明人： Rajaram Ramesh , Havish Koorapaty , Kumar Balachandran
IPC分类号： H04W68/00
CPC分类号： H04W68/02 , H04W4/08 , H04W72/0466
摘要： Code words are assigned to subscriber stations or groups of subscriber stations in a communication network for a quick paging mechanism in which the assigned code words are transmitted as quick paging signals over unused frequency resources to signal the subscriber stations. Subsets of multiple code words from a set of code words can be assigned to respective paging groups, and overlapping subsets can be assigned to multiple paging groups. This enables a single code word to be used to address either a single paging group or multiple paging groups.
摘要翻译：代码字被分配给通信网络中的订户站或用户站组，用于快速寻呼机制，其中分配的码字作为快速寻呼信号在未使用的频率资源上发送，以向用户台发信号。可以将来自一组码字的多个码字的子集分配给各个寻呼组，并且可以将重叠的子集分配给多个寻呼组。这使得能够使用单个代码字来寻址单个寻呼组或多个寻呼组。

2. 发明授权

US08144720B2 Uplink radio resource allocation in the presence of power limited users 有权
标题翻译：在电力限制用户面前上行无线电资源分配
公开(公告)号：US08144720B2
公开(公告)日：2012-03-27
申请号：US12429468
申请日：2009-04-24
申请人： Havish Koorapaty , Rajaram Ramesh , Kumar Balachandran
发明人： Havish Koorapaty , Rajaram Ramesh , Kumar Balachandran
IPC分类号： H04Q11/02
CPC分类号： H04L49/9094 , H04L1/0003 , H04L1/0009 , H04L5/0007 , H04L5/0042 , H04L5/0046 , H04L5/006 , H04L43/0894 , H04L43/16 , H04L47/70 , H04L47/74 , H04L47/781 , H04W28/065 , H04W28/22 , H04W72/044 , H04W72/048 , H04W72/12 , Y02D70/146
摘要： A base station in an OFDMA system which determines a modulation and coding scheme to use for a packet of a certain size to be transmitted by a Mobile Station. The base station schedules transmissions by mobile stations and transmits packets. The base station includes a processing unit which determines a number of time-frequency resources required to transmit the packet for a modulation and coding scheme, determines an SINR based on the number of time-frequency resources used and available power at the mobile station, determines a transmission rate as a ratio of the packet size transmitted to the number of time-frequency resources used, sets a rate to zero if the determined SINR is lower than a threshold SINR required for the modulation and coding scheme, and selects the modulation and coding scheme with a highest transmission rate. The base station includes a memory storing modulation and coding schemes.
摘要翻译： OFDMA系统中的基站，其确定用于要由移动站发送的一定大小的分组的调制和编码方案。基站调度移动台的传输并发送分组。基站包括：处理单元，其确定用于调制和编码方案发送分组所需的时间频率资源的数量;基于所使用的时间频率资源的数量和移动站的可用功率来确定SINR，确定如果发送的分组大小与使用的时间 - 频率资源的数量的比率的传输速率，则如果确定的SINR低于调制和编码方案所需的阈值SINR，则将速率设置为零，并且选择调制和编码传输速率最高的方案。基站包括存储调制和编码方案的存储器。

3. 发明授权

US07796698B2 Interference suppression in a multicarrier receiver 有权
标题翻译：多载波接收机中的干扰抑制
公开(公告)号：US07796698B2
公开(公告)日：2010-09-14
申请号：US11757731
申请日：2007-06-04
申请人： Havish Koorapaty , Rajaram Ramesh , Kumar Balachandran
发明人： Havish Koorapaty , Rajaram Ramesh , Kumar Balachandran
IPC分类号： H04K1/10 , H04Q7/20
CPC分类号： H04L27/2647 , H04L5/0048 , H04L25/0228
摘要： A receiver uses knowledge of pilot symbols transmitted by a neighboring sector to reduce interference in a received data symbol. The received data symbol is transmitted on one or more data subcarriers in a first sector. Overlapping pilot symbols transmitted on overlapping pilot carriers in a second sector are determined and used to generate channel estimates for the overlapping pilot carriers. The overlapping pilot symbols and pilot channel estimates are then used to reduce interference in the received data symbol.
摘要翻译：接收机使用由相邻扇区发送的导频符号的知识来减少接收的数据符号中的干扰。所接收的数据符号在第一扇区中的一个或多个数据子载波上发送。确定在第二扇区中的重叠导频载波上发送的重叠导频符号，并用于生成重叠导频载波的信道估计。然后使用重叠导频符号和导频信道估计来减少接收到的数据符号中的干扰。

4. 发明申请

US20100040174A1 METHOD AND ARRANGEMENT FOR ESTIMATING DC OFFSET 有权
标题翻译：估计直流偏差的方法和布置
公开(公告)号：US20100040174A1
公开(公告)日：2010-02-18
申请号：US11993605
申请日：2005-07-01
申请人： Dennis Hui , Rajaram Ramesh
发明人： Dennis Hui , Rajaram Ramesh
IPC分类号： H04L25/06
CPC分类号： H04L25/063 , H04L25/061
摘要： A method and arrangement for estimating a DC offset for a signal received in a radio receiver. The received signal includes a digitally modulated signal component, a DC offset component, and a noise component. When the signal is of a known type, such as a Gaussian Minimum Shift Keying (GMSK)-modulated signal with constant amplitude in a GSM/EDGE cellular radio system, the method exploits the known characteristics of the statistical distribution for the known type of signal to obtain a better estimate of the DC offset. The statistical distribution of the received digitally modulated signal component is first analyzed. That statistical distribution is then compared to the known statistical distribution for the known type of signal to identify differences. The differences are then used to estimate the DC offset. Additional iterations may be performed to further improve the DC estimate.
摘要翻译：一种用于估计在无线电接收机中接收的信号的DC偏移的方法和装置。接收到的信号包括数字调制信号分量，DC偏移分量和噪声分量。当信号是GSM / EDGE蜂窝无线电系统中具有恒定振幅的已知类型的高斯最小移频键控（GMSK）调制信号时，该方法利用了已知类型信号的已知统计分布特征以获得对DC偏移的更好的估计。首先分析接收到的数字调制信号分量的统计分布。然后将统计分布与已知的信号类型的统计分布进行比较以识别差异。然后使用差异来估计DC偏移。可以执行另外的迭代以进一步改善DC估计。

5. 发明授权

US07558533B2 Parameter estimate initialization using interpolation 有权
标题翻译：使用插值的参数估计初始化
公开(公告)号：US07558533B2
公开(公告)日：2009-07-07
申请号：US11936193
申请日：2007-11-07
申请人： Carmela Cozzo , Gregory Bottomley , Rajaram Ramesh
发明人： Carmela Cozzo , Gregory Bottomley , Rajaram Ramesh
IPC分类号： H04B15/00
CPC分类号： H04B1/712 , H04B1/7117 , H04B2201/709727
摘要： A receiver is described herein that is capable of receiving and processing a radio signal and further capable of using interpolation to initialize receiver parameters when there is a change in at least one delay associated with the received radio signal or when there is at least one new correlator position. For instance, the receiver parameters that can be initialized include: (1) channel coefficients; (2) AFC parameters; (3) tracking parameters; (4) noise statistics (noise correlations); (5) signal statistics (channel coefficient correlations); (6) data statistics (despread values or chip samples); or (7) combining weights.
摘要翻译：本文描述了一种接收机，其能够接收和处理无线电信号，并且还能够在存在与所接收的无线电信号相关联的至少一个延迟中的变化时或者当存在至少一个新的相关器时使用内插来初始化接收机参数位置。例如，可以初始化的接收机参数包括：（1）信道系数; （2）AFC参数; （3）跟踪参数; （4）噪声统计（噪声相关）; （5）信号统计（信道系数相关）; （6）数据统计（去扩展值或芯片样本）; 或（7）组合权重。

6. 发明申请

US20090092085A1 TELECOMMUNICATIONS FRAME STRUCTURE ACCOMODATING DIFFERING FORMATS 有权
标题翻译：电信框架结构承载不同格式
公开(公告)号：US20090092085A1
公开(公告)日：2009-04-09
申请号：US12138000
申请日：2008-06-12
申请人： Rajaram Ramesh , Kumar Balachandran , Havish Koorapaty
发明人： Rajaram Ramesh , Kumar Balachandran , Havish Koorapaty
IPC分类号： H04Q7/00
CPC分类号： H04L27/0008 , H04L1/0083 , H04L1/1607 , H04L5/0007 , H04L5/0091 , H04L25/0204
摘要： A radio access network (RAN) (20) comprise a base station (28) and a wireless terminal (30). The base station 28 comprises a transceiver (38) and a frame handler (40), the wireless terminal (30) comprises a transceiver (48) and a wireless terminal frame handler (50). The frame handlers (40, 50) handle a enhanced frame F having enhanced frame structure. At least a downlink portion of the frame is formatted and handled in a manner whereby the frame can be perceived as a first format type of frame if the wireless terminal is a first type of wireless terminal and perceived as an enhanced or second format type of frame if the wireless terminal is a second type of wireless terminal. The frame handler configures the frame as plural subframes, each subframe having a downlink burst followed by an uplink burst. The frame is preferably configured to afford the second type of wireless terminal sufficient time to develop an acknowledgement for a message transmitted in a downlink burst, the acknowledgement being sent to the base station in an uplink burst which is within one frame length of the message.
摘要翻译：无线电接入网络（RAN）（20）包括基站（28）和无线终端（30）。基站（28）包括收发器（38）和帧处理器（40），无线终端（30）包括收发器（48）和无线终端帧处理器（50）。帧处理器（40,50）处理具有增强的帧结构的增强帧F. 帧的至少下行链路部分被格式化和处理，其中如果无线终端是第一类型的无线终端并且被感知为增强或第二格式类型的帧，则可以将帧感知为第一格式类型的帧如果无线终端是第二类型的无线终端。帧处理器将帧配置为多个子帧，每个子帧具有下行链路突发，随后是上行链路突发。该帧优选地被配置为提供第二类型的无线终端足够的时间以对在下行链路突发中发送的消息进行确认，该确认在消息的一个帧长度内的上行链路突发中被发送到基站。

7. 发明申请

US20080310333A1 SEMI-PERSISTENT RESOURCE ALLOCATION METHOD FOR UPLINK TRANSMISSION IN WIRELESS PACKET DATA SYSTEMS 有权
标题翻译：无线分组数据系统中上行链路传输的半密集资源分配方法
公开(公告)号：US20080310333A1
公开(公告)日：2008-12-18
申请号：US11924258
申请日：2007-10-25
申请人： Kumar BALACHANDRAN , Havish KOORAPATY , Rajaram RAMESH
发明人： Kumar BALACHANDRAN , Havish KOORAPATY , Rajaram RAMESH
IPC分类号： H04B7/00
CPC分类号： H04W72/0446 , H04L1/08 , H04L1/1812 , H04L1/1825 , H04L1/1887 , H04W72/0406
摘要： A wireless telecommunications network supplies a semi-persistent resource that a wireless station can use for special purposes (such as a retransmission of packets for ARQ purposes or a control signal. The semi-persistent resource can be allocated by the system to other terminals if, e.g., a retransmission is not required. Since a retransmission is generally performed in response to a NACK received from a base station, the NACK may itself serve as a token that permits the wireless station to use the semi-persistent allocation. Thus, the technology includes, e.g., a method for resource allocation on a semi-persistent basis and efficient signaling for the usage of such allocation.
摘要翻译：无线电信网络提供无线站可以用于特殊目的的半持久资源，例如用于ARQ目的的分组重传或控制信号。如果不需要再传送，则半持久资源可以由系统分配给其他终端。由于通常响应于从基站接收到的NACK来执行重传，所以NACK本身可以用作允许无线站使用半持久分配的令牌。因此，该技术包括例如在半持久基础上的资源分配方法和用于这种分配的使用的有效信令。

8. 发明申请

US20080298524A1 Interference Suppression in a Multicarrier Receiver 有权
标题翻译：多载波接收机中的干扰抑制
公开(公告)号：US20080298524A1
公开(公告)日：2008-12-04
申请号：US11757731
申请日：2007-06-04
申请人： Havish Koorapaty , Rajaram Ramesh , Kumar Balachandran
发明人： Havish Koorapaty , Rajaram Ramesh , Kumar Balachandran
IPC分类号： H04B1/10
CPC分类号： H04L27/2647 , H04L5/0048 , H04L25/0228
摘要： A receiver uses knowledge of pilot symbols transmitted by a neighboring sector to reduce interference in a received data symbol. The received data symbol is transmitted on one or more data subcarriers in a first sector. Overlapping pilot symbols transmitted on overlapping pilot carriers in a second sector are determined and used to generate channel estimates for the overlapping pilot carriers. The overlapping pilot symbols and pilot channel estimates are then used to reduce interference in the received data symbol.
摘要翻译：接收机使用由相邻扇区发送的导频符号的知识来减少接收的数据符号中的干扰。所接收的数据符号在第一扇区中的一个或多个数据子载波上发送。确定在第二扇区中的重叠导频载波上发送的重叠导频符号，并用于生成重叠导频载波的信道估计。然后使用重叠导频符号和导频信道估计来减少接收到的数据符号中的干扰。

9. 发明申请

US20080298285A1 Efficient, Secure Digital Wireless Voice Telephony Via Selective Encryption 有权
标题翻译：通过选择性加密的高效，安全的数字无线语音电话
公开(公告)号：US20080298285A1
公开(公告)日：2008-12-04
申请号：US11757679
申请日：2007-06-04
申请人： Rajaram Ramesh , Kumar Balachandran , Havish Koorapaty
发明人： Rajaram Ramesh , Kumar Balachandran , Havish Koorapaty
IPC分类号： H04B7/00 , H04L12/66
CPC分类号： H04W12/02 , H04L65/607 , H04W84/00
摘要： Secure, digital, packet-switched, voice telephony calls are wirelessly transmitted in an efficient manner that reduces air interface bandwidth consumption by encrypting only vocoder data frames containing encoded speech, and not encrypting vocoder data frames that do not contain speech, such as those containing silence parameters. The collective reduced bandwidth consumption across a large number of voice telephony calls may allow for the admission of one or more new calls during times of voice telephony congestion. Not encrypting the silence parameters does not compromise call privacy or security, since the silence data frames do not carry any speech. The classification of encoded data frames as containing speech or not may be performed in a variety of ways.
摘要翻译：安全，数字，分组交换，语音电话呼叫以有效的方式无线传输，通过仅加密包含编码语音的声码器数据帧，而不加密不包含语音的声码器数据帧，减少空中接口带宽消耗，例如包含沉默参数。在大量语音电话呼叫中的集体降低的带宽消耗可以允许在语音电话拥塞期间允许一个或多个新的呼叫。不加密静音参数不会影响呼叫隐私或安全性，因为静音数据帧不携带任何语音。可以以各种方式来执行编码数据帧作为包含语音的分类。

10. 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。

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