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公开(公告)号：US08509325B2
公开(公告)日：2013-08-13
申请号：US12250135
申请日：2008-10-13
IPC分类号： H04L27/28
CPC分类号： H04L25/0218 , H04L5/0007 , H04L25/0204 , H04L25/022 , H04L25/0224
摘要： An adaptive thresholding technique eliminates suboptimum threshold values by adjusting for varying channel conditions to eliminate interference where no channel energy is present, without discarding viable taps having useful channel energy. The adaptive thresholding technique adaptively optimizes receive threshold values for both wide and local area channels based only on measured C/I ratios 300. Thresholds are calculated based on instantaneous C/I estimates and/or weighted average C/I estimates calculated from WID/LID energies obtained from the current superframe WIC/LIC symbols respectively. In alternate embodiments, thresholds are calculated based on instantaneous C/I estimates and/or weighted average C/I estimates calculated from WTPC and LTPC symbols for the wide and local area channels, respectively The present adaptive thresholding technique dynamically reduces the threshold as the C/I estimate increases to mitigate performance degradation due to removal of weak signal taps. There is a separate threshold for each of the 12 coding and modulation modes supported by an exemplary receiver.
摘要翻译： 自适应阈值技术通过调整不同的信道条件来消除次优阈值，以消除不存在信道能量的干扰，而不丢弃具有有用信道能量的可行分接头。 自适应阈值技术仅基于测量的C / I比300自适应地优化宽和局域信道的接收阈值。阈值基于从WID / LID计算的瞬时C / I估计和/或加权平均C / I估计来计算 从当前超帧WIC / LIC符号获得的能量。 在替代实施例中，基于针对宽和局域信道的WTPC和LTPC符号计算的瞬时C / I估计和/或加权平均C / I估计来计算阈值。当前自适应阈值技术动态地将阈值设置为C /我估计增加以减轻由于去除弱信号抽头而导致的性能下降。 对于由示例性接收机支持的12个编码和调制模式中的每一个，存在单独的阈值。
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公开(公告)号：US08285331B2
公开(公告)日：2012-10-09
申请号：US11475793
申请日：2006-06-26
摘要： A system and method for performing base station initiated call setup is provided. A base station initiated call setup may be utilized to establish a test call, to deliver a packet data services call to a subscriber unit, or to reactivate a dormant packet call. The base station transmits a BS Service Request message to the mobile switching center, requesting initiation of the call. The mobile switching center will authorize the call if the call to be set up is directed to a subscriber unit located within the service area of the base station and if the service option to be used is authorized for the particular subscriber unit. The mobile switching center will allow or disallow the call depending on the state of the subscriber unit. The mobile switching center transmits a BS Service Response message to the base station, conveying the result of processing the BS Service Request message. If the base station initiated call setup is authorized and allowed, the call will generally proceed in the same manner as a subscriber terminated call.
摘要翻译： 提供了一种执行基站发起呼叫建立的系统和方法。 可以利用基站发起的呼叫建立来建立测试呼叫，将分组数据业务呼叫传送给用户单元，或者重新激活休眠分组呼叫。 基站向移动交换中心发送BS业务请求消息，请求发起呼叫。 如果要建立的呼叫被引导到位于基站的服务区域内的用户单元，并且要被使用的服务选项被授权给特定用户单元，则移动交换中心将授权呼叫。 移动交换中心将根据用户单元的状态允许或禁止呼叫。 移动交换中心向基站发送BS业务响应消息，传送处理BS业务请求消息的结果。 如果基站发起的呼叫建立被授权和允许，则呼叫通常将以与用户终止呼叫相同的方式进行。
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公开(公告)号：US20060246923A1
公开(公告)日：2006-11-02
申请号：US11475793
申请日：2006-06-26
申请人： Rajeev Krishnamurthi , Roy Quick , Bibhu Mohanty , Robert Kimball
发明人： Rajeev Krishnamurthi , Roy Quick , Bibhu Mohanty , Robert Kimball
IPC分类号： H04Q7/20
摘要： A system and method for performing base station initiated call setup is provided. A base station initiated call setup may be utilized to establish a test call, to deliver a packet data services call to a subscriber unit, or to reactivate a dormant packet call. The base station transmits a BS Service Request message to the mobile switching center, requesting initiation of the call. The mobile switching center will authorize the call if the call to be set up is directed to a subscriber unit located within the service area of the base station and if the service option to be used is authorized for the particular subscriber unit. The mobile switching center will allow or disallow the call depending on the state of the subscriber unit. The mobile switching center transmits a BS Service Response message to the base station, conveying the result of processing the BS Service Request message. If the base station initiated call setup is authorized and allowed, the call will generally proceed in the same manner as a subscriber terminated call.
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24.发明申请ROBUST SPUR INDUCED TRANSMIT ECHO CANCELLATION FOR MULTI-CARRIER SYSTEMS SUPPORT IN AN RF INTEGRATED TRANSCEIVER 审中-公开RF集成收发器中的多载波系统支持的强大的SPUR感应发射ECHO取消公开(公告)号：US20130040555A1
公开(公告)日：2013-02-14
申请号：US13351110
申请日：2012-01-16
摘要： A method and apparatus for eliminating transmit echo spurs is provided. The method includes the steps of: estimating a distortion effect applied to a transmit signal by a duplexer stop band. Next, the contribution of a primary component of the spur is estimated. An image component of the spur is estimated after the primary contribution has been estimated. The transmit echo is then subtracted from the composite desired signal by digitally subtracting the distortion effect, the primary component of the spur, and the image component of the spur, producing the desired composite transmit signal without the transmit echo.
摘要翻译： 提供了一种用于消除发射回波刺激的方法和装置。 该方法包括以下步骤：通过双工器停止频带来估计应用于发送信号的失真效应。 接下来，估计刺激的主要成分的贡献。 在估计主要贡献之后，估计刺激的图像分量。 然后通过数字地减去失真效应，支线的主要分量和支线的图像分量从复合期望信号中减去发送回波，产生没有发送回波的期望的复合发送信号。
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公开(公告)号：US06381230B1
公开(公告)日：2002-04-30
申请号：US09123495
申请日：1998-07-28
申请人： Charles E. Wheatley, III , Edward G. Tiedemann, Jr. , Joseph P. Odenwalder , Rajeev Krishnamurthi
发明人： Charles E. Wheatley, III , Edward G. Tiedemann, Jr. , Joseph P. Odenwalder , Rajeev Krishnamurthi
IPC分类号： H04Q700
CPC分类号： H04W16/16 , H04W84/042 , H04W84/105 , H04W88/04 , H04W88/06 , H04W88/08
摘要： A method and system for operation of a personal base station where the forward link of a personal base station is on the same frequency assignment as a first forward link data signal transmitted by a macro base station belonging to a cellular communication system. A first subscriber station communicates with the macro base station. The personal base station generates a second forward link data signal and communicates with a second subscriber station. The personal base station receives the first forward link data signal and combines it with its own second forward link data signal to form a combined forward link data signal. The personal base station then transmits the combined forward link data signal. The first subscriber station is able to receive and diversity combine the combined forward link data signal, improving the signal to noise ratio that would otherwise occur in the vicinity of the personal base station.
摘要翻译： 一种用于个人基站的操作的方法和系统，其中个人基站的前向链路与属于蜂窝通信系统的宏基站发送的与第一前向链路数据信号相同的频率分配。 第一用户站与宏基站进行通信。 个人基站产生第二前向链路数据信号并与第二用户台进行通信。 个人基站接收第一前向链路数据信号并将其与其自己的第二前向链路数据信号组合，以形成组合的前向链路数据信号。 然后，个人基站发送组合的前向链路数据信号。 第一用户台能够接收并分集组合前向链路数据信号，从而提高否则将发生在个人基站附近的信噪比。
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公开(公告)号：US06198929B1
公开(公告)日：2001-03-06
申请号：US08986488
申请日：1997-12-08
IPC分类号： H04Q738
摘要： A system and method for providing mobile switching center (MSC) initiated service negotiation in a wireless communication system. If a new call arrives for a subscriber unit while the subscriber unit is already on the traffic channel, a change in the service configuration may allow the subscriber unit to receive the new call while preserving the old call. MSC initiated service negotiation may be used to establish the change in service configuration. The MSC transmits a Change Service Command message to the base station in whose coverage area the subscriber unit is located. The Change Service Command proposes a new service configuration to accommodate both the old and the new call. The base station, subscriber unit, and MSC may interchange further messages to modify the proposed service configuration if necessary. Messages are exchanged until the base station, subscriber unit, and MSC reach an agreement regarding the new service configuration. The present invention also provides support for soft handoff. The new service configuration is presented to all target base stations involved in the soft handoff, so that the subscriber unit may make use of the new service configuration while in soft handoff.
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27.发明授权Method and apparatus for providing an alert with information signal between a mobile switching center and a base station 失效用于在移动交换中心和基站之间提供具有信息信号的警报的方法和装置
公开(公告)号：US6157828A
公开(公告)日：2000-12-05
申请号：US792554
申请日：1997-01-31
申请人： Rajeev Krishnamurthi
发明人： Rajeev Krishnamurthi
CPC分类号： H04W68/005 , H04W4/00
摘要： The invention is a method and apparatus for providing an Alert With Information Message signal between a mobile switching center and a base station in a cellular communication system. The invention recognizes that current provisions of the IS-634 standard lack support for certain required functionality on the interface between a mobile switching center and a base station, or the A-Interface. An Alert With Information Message signal is introduced on the A-Interface to support the required functionality. Introduction of the Alert With Information Message provides support for reliable call processing on the A-Interface for the call waiting procedure and the hard handoff procedure.
摘要翻译： 本发明是一种用于在蜂窝通信系统中的移动交换中心和基站之间提供警报信息消息信号的方法和装置。 本发明认识到IS-634标准的当前规定在移动交换中心和基站或A-Interface之间的接口上不支持某些所需功能。 带有信息的警报消息信号在A-Interface上引入，以支持所需的功能。 警报信息引入信息消息支持呼叫等待过程和硬切换过程在A接口上的可靠呼叫处理。
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