公开(公告)号：US06246891B1

公开(公告)日：2001-06-12

申请号：US08972948

申请日：1997-11-19

申请人： B. Johanna Isberg ,  Mikael Dahlkvist ,  L. Fredrik Liljegren ,  Ulf C. Björkengren ,  Anders Khullar

发明人： B. Johanna Isberg ,  Mikael Dahlkvist ,  L. Fredrik Liljegren ,  Ulf C. Björkengren ,  Anders Khullar

IPC分类号： H04B140

CPC分类号： H01Q1/242 ,  H01Q1/088 ,  H04B1/3833

摘要： To enable use of an intelligent mobile communication unit (1) in areas where there are restrictions on the emission of radio frequency energy, the unit is provided with means (3) for actively preventing radio frequency radiation from the unit (1) even if non-radio frequency energy emitting parts of the unit (1) are operable.

摘要翻译： 为了使能智能移动通信单元（1）在发射射频能量受到限制的区域中使用，该单元设置有用于主动防止来自单元（1）的射频辐射的装置（3），即使非 单元（1）的放射能量发射部分是可操作的。

公开(公告)号：US06871066B1

公开(公告)日：2005-03-22

申请号：US09661677

申请日：2000-09-14

申请人： Anders Khullar ,  Bengt Lindoff ,  Niklas Stenström

发明人： Anders Khullar ,  Bengt Lindoff ,  Niklas Stenström

IPC分类号： H04B7/26 ,  H04B17/00 ,  H04L1/00 ,  H04L1/20 ,  H04Q7/20

CPC分类号： H04L1/20 ,  H04L1/0002 ,  H04L1/0009

摘要： The invention relates to: A method for estimating residual noise in the frequency range (271) of a desired part (240) of a signal to a corresponding apparatus and to a mobile telephone utilizing the method.The object of the present invention is to generate a measure for the residual noise in a signal.The problem is solved in that the amplitude of the signal (114) comprising the noise is modified, and the signal (114) is combined with the modified signal (115) to create a noise estimation measure (116).The invention may e.g. be used in digital radio communications systems to contribute to the monitoring of link quality and therefore to improve payload throughput. One of the advantages of the invention is that an indication of link quality at an early stage in the receiver is provided.

摘要翻译： 本发明涉及一种用于利用该方法将信号的期望部分（240）的频率范围（271）中的残余噪声估计给相应设备和移动电话的方法。本发明的目的是产生 解决了信号中的残余噪声的度量。解决了包括噪声的信号（114）的振幅被修改，并且信号（114）与修改的信号（115）组合以产生噪声估计 措施（116） 用于数字无线电通信系统，以有助于监测链路质量，从而提高有效负载吞吐量。 本发明的优点之一是提供了在接收机中的早期阶段的链路质量的指示。

公开(公告)号：US6009319A

公开(公告)日：1999-12-28

申请号：US708202

申请日：1996-09-06

申请人： Anders Khullar ,  Bjorn Olof Peter Ekelund

发明人： Anders Khullar ,  Bjorn Olof Peter Ekelund

IPC分类号： G06F1/14 ,  G06F1/08 ,  H04B1/16 ,  H04B7/26 ,  H04M1/73 ,  H04W52/02

CPC分类号： H04W52/029 ,  H04B1/1615 ,  Y02B60/50

摘要： Methods and systems for generating timing signals in remote units which can be used in a radiocommunication system are described. A high accuracy clock can be used to provide a timing reference signal for a processor in the remote unit during times when highly accurate timing signals are required. During periods of low activity, the high accuracy clock can be turned off and a low accuracy clock can be used to generate the reference timing signals for the processor. Periodically, the accuracy of the low accuracy clock can be checked by determining a number of low accuracy clock pulses which are generated between system timing signals created based upon the high accuracy clock pulses. In this way, when the low accuracy clock is relied upon to create the system tuning signals, the accuracy is sufficient to enable the processor to recognize when it is time to again power up the high accuracy clock. Moreover, checking the accuracy of the low accuracy clock enables the processor to provide error compensation signals to a real time clock function which relies upon the low accuracy clock pulses for determining a current time.

摘要翻译： 描述了可以在无线电通信系统中使用的用于在远程单元中产生定时信号的方法和系统。 在需要高度准确的定时信号的时间期间，可以使用高精度时钟来为远程单元中的处理器提供定时参考信号。 在低活动期间，可以关闭高精度时钟，并且可以使用低精度时钟来产生用于处理器的参考定时信号。 周期性地，可以通过确定在基于高精度时钟脉冲创建的系统定时信号之间产生的低精度时钟脉冲的数量来检查低精度时钟的精度。 以这种方式，当低精度时钟依赖于创建系统调谐信号时，精度足以使处理器能够在何时再次启动高精度时钟。 此外，检查低精度时钟的精度使得处理器能够向实时时钟功能提供误差补偿信号，该实时时钟功能依赖于用于确定当前时间的低精度时钟脉冲。

公开(公告)号：US06748246B1

公开(公告)日：2004-06-08

申请号：US09677130

申请日：2000-09-29

申请人： Anders Khullar

发明人： Anders Khullar

IPC分类号： H04B138

CPC分类号： H04W48/18 ,  H04W52/0245 ,  H04W52/0261 ,  H04W88/06 ,  Y02D70/1222

摘要： Method and apparatus for selecting an access technology in a multi-mode terminal are provided. Information is exchanged between a multi-mode terminal and at least one base station using a first access technology, the multi-mode terminal being capable of exchanging information with the at least one base station using a number of access technologies. The type of information exchanged is identified, and at least a second access technology is determined, different from the first access technology, that is capable of exchanging information of the identified information type. The first and at least second access technologies form a set of compatible access technologies. A determination is made as to the minimum radiated power level needed to exchange the information with the at least one base station for each of the compatible access technologies. An optimal access technology requiring a lowest amount of battery energy among the set of compatible access technologies is selected to maintain the minimum radiated power level needed to exchange the information between the multi-mode terminal and the at least one base station.

摘要翻译： 提供了一种用于在多模终端中选择接入技术的方法和装置。 使用第一接入技术在多模终端和至少一个基站之间交换信息，多模终端能够使用多种接入技术与至少一个基站交换信息。 识别交换的信息的类型，并且确定与第一接入技术不同的至少第二接入技术，其能够交换所识别的信息类型的信息。 第一和第二接入技术形成一组兼容的接入技术。 确定与用于每个兼容接入技术的至少一个基站交换信息所需的最小辐射功率电平。 选择在所述一组兼容接入技术中需要最小量的电池能量的最佳接入技术以保持在所述多模终端与所述至少一个基站之间交换所述信息所需的最小辐射功率电平。

公开(公告)号：US06253268B1

公开(公告)日：2001-06-26

申请号：US09232291

申请日：1999-01-15

申请人： Ulf Christian Björkengren ,  Anders Khullar ,  Johan Georg Michael Uggmark

发明人： Ulf Christian Björkengren ,  Anders Khullar ,  Johan Georg Michael Uggmark

IPC分类号： G06F1300

CPC分类号： H04W88/02 ,  G06F13/385 ,  G06F13/4291

摘要： A method and system for communicating data between an integrated circuit and each of a first device and a second device. Communications between the integrated circuit and the first device use a first interface protocol, while communications between the integrated circuit and the second device use a second interface protocol. Both interface protocols, however, share the same data bus and clock bus. To communicate using the second interface protocol, the first device, which uses the first interface protocol, is first deactivated by sending address data via the shared data bus that does not identify the first device, thereby causing the first device to enter an inactive state until a stop condition is detected on the shared data bus. Then, communications using the second interface protocol can be carried out, provided that a start or stop condition for the first interface protocol is not inadvertently generated on the shared data bus.

摘要翻译： 一种用于在集成电路与第一设备和第二设备中的每一个之间传送数据的方法和系统。 集成电路和第一设备之间的通信使用第一接口协议，而集成电路和第二设备之间的通信使用第二接口协议。 然而，两个接口协议共享相同的数据总线和时钟总线。 为了使用第二接口协议进行通信，使用第一接口协议的第一设备首先通过经由共享数据总线发送地址数据而不被识别第一设备来停用，从而使第一设备进入非活动状态直到 在共享数据总线上检测到停止条件。 然后，可以执行使用第二接口协议的通信，只要在共享数据总线上不会无意中产生用于第一接口协议的开始或停止条件。

公开(公告)号：US6118982A

公开(公告)日：2000-09-12

申请号：US836346

申请日：1997-05-12

申请人： Walter Ghisler ,  Anders Khullar

发明人： Walter Ghisler ,  Anders Khullar

IPC分类号： H04B17/00 ,  H04B7/26 ,  H04W24/00

CPC分类号： H04W24/00

摘要： A method and an arrangement for automatically monitoring a mobile telephone unit (ME) on the occurrence of at least one predetermined event in the mobile telephone unit (ME), for instance a call release. The method comprises the steps of: storing at least one monitoring program in a program generator (PRG) in the mobile unit (ME); storing in a comparison circuit (CC) in the mobile unit (ME) signal patterns representative of different types of trigger signals (TSI); sending a trigger signal (TSI) from a trigger device (TA) in the mobile unit to the comparison circuit (CC), the trigger signal (TSI) being contingent on the occurrent event; comparing the trigger signal (TSI) with the signal patterns; selecting a monitoring program according to the result of the comparison; and executing the selected monitoring program in the mobile unit (ME).

摘要翻译： PCT No.PCT / SE95 / 01301 Sec。 371日期：1997年5月12日 102（e）日期1997年5月12日PCT提交1995年11月3日PCT公布。 公开号WO96 / 16523 日期：1996年5月30日一种在移动电话单元（ME）中发生至少一个预定事件（例如呼叫释放）时自动监视移动电话单元（ME）的方法和装置。 该方法包括以下步骤：将至少一个监控程序存储在移动单元（ME）中的程序生成器（PRG）中; 存储在表示不同类型的触发信号（TSI）的移动单元（ME）中的比较电路（CC）中的信号模式; 从移动单元中的触发装置（TA）向比较电路（CC）发送触发信号（TSI），所述触发信号（TSI）取决于所发生的事件; 将触发信号（TSI）与信号模式进行比较; 根据比较结果选择监控程序; 以及在所述移动单元（ME）中执行所选择的监视程序。

公开(公告)号：US06904104B1

公开(公告)日：2005-06-07

申请号：US09393657

申请日：1999-09-10

申请人： Anders Khullar ,  Björn Lindquist

发明人： Anders Khullar ,  Björn Lindquist

IPC分类号： H04L27/22 ,  H04L7/02 ,  H04L25/06 ,  H04L27/233 ,  H04Q7/38 ,  H03D3/22

CPC分类号： H04L7/0054 ,  H04L25/068 ,  H04L27/2332

摘要： A receiver section recovers the in-phase and quadrature components of a linear modulated data signal. The in-phase signal is sampled and quantized producing an in-phase sample stream, and the quadrature phase signal is sampled and quantized producing a quadrature sample stream. The in-phase sample stream and the quadrature sample stream are both over-sampled at a rate of N times a symbol rate of the data signal. A decimation section filters the quantized in-phase sample stream and the quantized quadrature sample stream to produce a reduced in-phase sample stream and a reduced quadrature sample stream at a rate of M times the symbol rate, wherein M is less than or equal to N. A decision component calculates the magnitude of a combination of an in-phase sample and a quadrature sample at M corresponding sample points in the reduced in-phase sample stream and the reduced quadrature sample stream, respectively, and then forms an in-phase symbol stream and a quadrature symbol stream using the in-phase sample and the quadrature sample, respectively, associated with the sample point having a largest magnitude.

摘要翻译： 接收器部分恢复线性调制数据信号的同相和正交分量。 同相信号被采样和量化，产生同相采样流，并对正交相位信号进行采样和量化，产生正交样本流。 同相采样流和正交采样流都以数据信号的符号率N倍的速率过采样。 抽取部分对量化的同相采样流和量化的正交采样流进行滤波，以符号速率M倍的速率产生减小的同相采样流和减小的正交样本流，其中M小于或等于 N.一个决策分量在减少的同相采样流和减小的正交采样流中的M个对应采样点处分别计算同相采样和正交采样的组合的幅度，然后形成同相 符号流和使用与具有最大幅度的采样点相关联的同相采样和正交样本的正交符号流。

公开(公告)号：US06463107B1

公开(公告)日：2002-10-08

申请号：US09340254

申请日：1999-07-01

申请人： Bengt Lindoff ,  Niklas Stenström ,  Anders Khullar

发明人： Bengt Lindoff ,  Niklas Stenström ,  Anders Khullar

IPC分类号： H03D100

CPC分类号： H04L27/2017 ,  H04L25/0228 ,  H04L27/0012 ,  H04L27/2067 ,  H04L2025/03401

摘要： In a communication system including a transmitter and a receiver, the receiver is synchronized with the transmitter, and a modulation type in a signal transmitted by the transmitter and received by the receiver is detected. A first portion of the received signal is correlated with one or more signals representing modulation types used by the communication system to detect the type of modulation being used in the received signal. Synchronization is established between the transmitter and the receiver. The first portion may be correlated with each of one or more different signals representing various modulation types used in the communication system to detect the type of modulation used. Alternately, the first portion of the received signal may be derotated by different amounts to produce a plurality of derotated signals that are correlated with the signal representing modulation used by the communication system in order to detect the type of modulation used. If the correlation does not result in a determination of the modulation type, either a predetermined modulation type is selected as the modulation type, or the decision of the modulation type is made at a later stage based, e.g., on a comparison of signal qualities or equalization results.

摘要翻译： 在包括发射机和接收机的通信系统中，接收机与发射机同步，并且检测由发射机发射并由接收机接收的信号中的调制类型。 接收信号的第一部分与表示由通信系统用于检测在接收信号中使用的调制类型的调制类型的一个或多个信号相关联。 在发射机和接收机之间建立同步。 第一部分可以与表示在通信系统中使用的各种调制类型的一个或多个不同信号中的每一个相关联，以检测所使用的调制类型。 或者，接收信号的第一部分可以被不同的量消除，以产生与表示由通信系统使用的调制信号相关联的多个去扭信号，以便检测所使用的调制类型。 如果相关性不导致调制类型的确定，则选择预定调制类型作为调制类型，或者例如基于信号质量的比较或稍后阶段进行调制类型的判定 均衡结果。

公开(公告)号：US5838735A

公开(公告)日：1998-11-17

申请号：US679461

申请日：1996-07-08

申请人： Anders Khullar

发明人： Anders Khullar

IPC分类号： H04L27/06 ,  H03D1/22 ,  H04L25/06 ,  H04L27/14

CPC分类号： H04L25/062 ,  H03D1/2245 ,  Y02B60/50

摘要： Methods and apparatus for detecting, estimating, and compensating for unwanted d.c. offsets in sampled signals in a direct conversion receiver are described. These methods and devices can be used for varying d.c. offsets, ramps, and steps to realize a direct-conversion receiver for modem cellular communication systems that does not suffer performance degradation due to strong interferers.

摘要翻译： 用于检测，估计和补偿不需要的直流的方法和装置。 描述直接转换接收机中的采样信号中的偏移。 这些方法和装置可用于变化直流。 偏移，斜坡和步骤来实现用于调制解调器蜂窝通信系统的直接转换接收机，其不会因强干扰源而遭受性能降级。

公开(公告)号：US06888903B1

公开(公告)日：2005-05-03

申请号：US09718667

申请日：2000-11-22

申请人： Niklas Stenström ,  Anders Khullar ,  Bengt Lindoff

发明人： Niklas Stenström ,  Anders Khullar ,  Bengt Lindoff

IPC分类号： H04J3/00 ,  H04B3/10 ,  H04L25/02 ,  H04B1/10

CPC分类号： H04L25/0212 ,  H04L25/023

摘要： A digital communication receiver communicates with a digital communication transmitter across a communication channel and has: a channel estimator, which provide a channel estimate of the communication channel based on a received signal; an equalizer, which estimates a sequence of transmitted symbols and provides a sequence of decided symbols based on the received signal and the channel estimate; and a channel tracker, which produces an updated channel estimate based on the received signal and the decided symbols, and which supplies the updated channel estimate to the equalizer. The digital communication receiver has a controller, which receives channel quality indicative data associated with an output from the equalizer, determines whether these data fail to meet a predetermined criterion, and, if so, supplies an enabling control signal to the channel tracker.

摘要翻译： 数字通信接收器在通信信道上与数字通信发射机通信，并具有：信道估计器，其基于接收到的信号提供通信信道的信道估计; 均衡器，其估计发射符号序列，并且基于接收信号和信道估计提供确定符号序列; 以及信道跟踪器，其基于接收到的信号和所确定的符号产生更新的信道估计，并且将更新的信道估计提供给均衡器。 数字通信接收机还具有控制器，其接收与均衡器的输出相关联的信道质量指示数据，确定这些数据是否不符合预定标准，如果是，则向通道跟踪器提供使能控制信号。