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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

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。

5. 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。

6. 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。

7. 发明授权

US08526305B2 System and methods for reducing power consumed by a base station 有权
标题翻译：用于降低基站消耗功率的系统和方法
公开(公告)号：US08526305B2
公开(公告)日：2013-09-03
申请号：US12548045
申请日：2009-08-26
申请人： Rajaram Ramesh , Kumar Balachandran , Havish Koorapaty , Stephen Grant
发明人： Rajaram Ramesh , Kumar Balachandran , Havish Koorapaty , Stephen Grant
IPC分类号： H04J1/16
CPC分类号： H04W48/14 , H04W48/20 , H04W52/0206 , H04W52/0274 , Y02D70/00 , Y02D70/1222 , Y02D70/1262 , Y02D70/146 , Y02D70/164
摘要： The present invention provides systems and methods that enable a base station to consume less power. According to an embodiment of the invention, the base station reduces its power consumption by not continuously broadcasting control information. In such an embodiment, a mobile station that seeks access to a network to which the base station provides access does not search for broadcast control information prior to transmitting an access message to the base station, but rather simply transmits on a predetermined access channel an access request message. A base station that receives the access request message may unicast control information to the mobile station.
摘要翻译：本发明提供使基站能够消耗更少功率的系统和方法。根据本发明的实施例，基站通过不连续地广播控制信息来降低其功耗。在这样的实施例中，寻求对基站提供访问的网络的访问的移动站在向基站发送接入消息之前不搜索广播控制信息，而是简单地在预定接入信道上发送接入请求消息。接收访问请求消息的基站可以向移动台单播控制信息。

8. 发明授权

US08259827B2 Quick paging receivers in telecommunication systems 有权
标题翻译：电讯系统中的快速寻呼机
公开(公告)号：US08259827B2
公开(公告)日：2012-09-04
申请号：US12355606
申请日：2009-01-16
申请人： Rajaram Ramesh , Havish Koorapaty , Kumar Balachandran
发明人： Rajaram Ramesh , Havish Koorapaty , Kumar Balachandran
IPC分类号： H04K1/10
CPC分类号： H04L27/2647
摘要： Methods and apparatus by which receiving stations or other communication network nodes can receive quick paging code words assigned by transmitting stations to the receiving stations. A receiving station can estimate the characteristics of the channel to the transmitting station based on a downlink-frame's preamble and use correlation to detect the presence of an assigned code word. The receiving station can suppress interference from other transmitting stations in the correlation operation based on the nature of the interference signal. When the receiving station knows an interfering signal from another transmitting station, the receiving station can subtract the interfering signal before carrying out the correlation operation.
摘要翻译：接收站或其他通信网络节点能够接收由发送站分配给接收站的快速寻呼码字的方法和装置。接收站可以基于下行链路帧的前导码来估计发送站的信道的特性，并使用相关性来检测分配的码字的存在。基于干扰信号的性质，接收站可以在相关操作中抑制来自其他发射站的干扰。当接收站知道来自另一发射台的干扰信号时，接收站可以在进行相关操作之前减去干扰信号。

9. 发明授权

US08244305B2 Efficient, secure digital wireless voice telephony via selective encryption 有权
标题翻译：通过选择性加密实现高效，安全的数字无线语音电话
公开(公告)号：US08244305B2
公开(公告)日：2012-08-14
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： H04M1/00 , H04B1/38
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. 发明授权

US08155247B2 Message decoding with a priori information and soft combining 有权
标题翻译：消息解码与先验信息和软组合
公开(公告)号：US08155247B2
公开(公告)日：2012-04-10
申请号：US12063997
申请日：2005-08-16
申请人： Havish Koorapaty , Rajaram Ramesh , Kumar Balachandran
发明人： Havish Koorapaty , Rajaram Ramesh , Kumar Balachandran
IPC分类号： H04L27/06
CPC分类号： H03M13/3769 , H04L1/0045 , H04L1/0072 , H04L1/0075 , H04L1/08
摘要： A method and arrangement for improving channel decoding performance in a radio receiver. Data bits from previously decoded messages are analyzed to provide a priori information to a channel decoder which is decoding a currently received message of the same type. The invention may analyze both the header and data fields of the previously decoded message frames to detect fields that are unchanging or rarely changing from one frame to the next. Probabilistic knowledge (a) of the bits in these unchanging or rarely changing fields is then used to improve the decoding performance for the current message. If a message cannot be successfully decoded, soft values of the bits are stored and then soft-combined with selected bits in the next message received prior to decoding. The invention is applicable to any type of message that has data components that are repeated with varying degrees of probability in successive transmissions.
摘要翻译：一种用于提高无线电接收机中的信道解码性能的方法和装置。分析来自先前解码的消息的数据比特以向正在解码当前接收到的相同类型的消息的信道解码器提供先验信息。本发明可以分析先前解码的消息帧的头部和数据字段，以检测不一致或很少从一个帧改变到下一个帧的场。然后使用这些不变或很少变化的字段中的位的概率知识（a）来提高当前消息的解码性能。如果消息无法成功解码，则存储比特的软值，然后在解码之前接收的下一个消息中与选定的比特进行软组合。本发明可应用于具有在连续传输中以不同程度的概率重复的数据分量的任何类型的消息。

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