公开(公告)号：US20080081624A1

公开(公告)日：2008-04-03

申请号：US11537104

申请日：2006-09-29

申请人： Andres Reial ,  Bengt Lindoff

发明人： Andres Reial ,  Bengt Lindoff

IPC分类号： H04Q7/20

CPC分类号： H04W36/0094 ,  H04B2201/709727 ,  H04W36/30

摘要： A method and apparatus adapted to adjust threshold values for initiating HO measurements based on terminal or user equipment (UE) performance. The threshold values for initiating the HO measurements and for executing the HO may be determined by the network. Prior to determining whether to proceed with these procedures, the thresholds are adjusted, based on the actual UE performance. This adjustment is achieved by applying an offset in dB that captures the effective SIR improvement of the advanced receiver compared to the standard receiver used to set the thresholds. The offset depends on, among other things, the receiver type used, the number of receiver antennas, the multi-path channel profile, the number of active radio links, and the services/connection modes that are currently active in the UE.

摘要翻译： 一种适于基于终端或用户设备（UE）性能来调整用于发起HO测量的阈值的方法和装置。 用于启动HO测量和用于执行HO的阈值可以由网络确定。 在确定是否继续执行这些程序之前，根据实际的UE性能调整阈值。 通过应用与用于设置阈值的标准接收机相比，捕获高级接收机的有效SIR改善的以dB为单位的偏移来实现该调整。 偏移量取决于所使用的接收器类型，接收机天线的数量，多径信道简档，活动无线电链路的数量以及当前在UE中活动的服务/连接模式。

公开(公告)号：US20080031368A1

公开(公告)日：2008-02-07

申请号：US11289184

申请日：2005-11-29

申请人： Bengt Lindoff ,  Magnus Almgren ,  Henrik Asplund ,  Anders Furuskar ,  Niclas Wiberg

发明人： Bengt Lindoff ,  Magnus Almgren ,  Henrik Asplund ,  Anders Furuskar ,  Niclas Wiberg

IPC分类号： H04J11/00 ,  H04Q7/20

CPC分类号： H04W48/20 ,  H04B17/318 ,  H04B17/336 ,  H04B17/382 ,  H04L27/2601

摘要： Systems and methods of cell selection are based on measures of frequency selectivity, time selectivity, and/or antenna selectivity. For example, the delay spread and coherence bandwidth of a channel are two measures of frequency selectivity that can be taken into account in the cell selection process. In addition to or instead of either delay spread or coherence bandwidth, Doppler frequency shift or coherence time (which are two measures of time selectivity) and/or antenna correlation or mean signal strength per antenna (which are two measures of antenna selectivity), among other parameters, can be determined and taken into account.

摘要翻译： 小区选择的系统和方法基于频率选择性，时间选择性和/或天线选择性的测量。 例如，信道的延迟扩展和相干带宽是在小区选择过程中可以考虑的频率选择性的两个度量。 除了或代替延迟扩展或相干带宽，多普勒频移或相干时间（其是时间选择性的两个测量）和/或天线相关性或每个天线的平均信号强度（其是天线选择性的两个测量），在 其他参数，可以确定和考虑。

公开(公告)号：US20070297324A1

公开(公告)日：2007-12-27

申请号：US11566508

申请日：2006-12-04

申请人： Bengt Lindoff ,  Anders Wallen

发明人： Bengt Lindoff ,  Anders Wallen

IPC分类号： H04J11/00

CPC分类号： H04L27/261 ,  H04J11/0093 ,  H04L27/2656 ,  H04L27/2684 ,  H04W24/00 ,  H04W36/30 ,  H04W48/08 ,  H04W56/00 ,  H04W88/02

摘要： A method and apparatus that utilizes the synchronization channel (SCH) by the user equipment (UE) to obtain time synchronization information and to perform cell search. In order to perform the SCH detection, only a correlation between the known SCH signal and the received sequence is needed, hence the FFT is not involved in the synchronization step. Typically the SCH and pilot symbols are transmitted with a constant power which is the same for all base stations. Hence, based on the serving cell (SC) SCH and pilot symbols, the power relation between these signals is estimated and the ratio applied when performing time synchronization to other cells (i.e. correlation the received sequence with the SCH from that particular NC) to estimate the pilot signal strength for the NB cell.

摘要翻译： 利用用户设备（UE）的同步信道（SCH）获取时间同步信息并执行小区搜索的方法和装置。 为了执行SCH检测，仅需要已知SCH信号和接收到的序列之间的相关性，因此在同步步骤中不涉及FFT。 通常，SCH和导频符号以对于所有基站相同的恒定功率发送。 因此，基于服务小区（SC）SCH和导频符号，估计这些信号之间的功率关系，并且当与其他小区进行时间同步时（即，将来自该特定NC的SCH的接收序列相关）估计 NB电池的导频信号强度。

公开(公告)号：US20070293157A1

公开(公告)日：2007-12-20

申请号：US11425324

申请日：2006-06-20

申请人： Jacobus Haartsen ,  Bengt Lindoff

发明人： Jacobus Haartsen ,  Bengt Lindoff

IPC分类号： H04B17/00 ,  H04B15/00 ,  H04B7/00

CPC分类号： H04W56/0045 ,  H04B7/2681

摘要： Timing alignment of User Equipment (UE) in a communications system is maintained by measuring an environmental condition of the UE, and determining a present magnitude of change metric representing a present magnitude of change of the environmental condition relative to a baseline value. The present magnitude of change metric is combined with a previous accumulation metric to obtain a present accumulation metric. If it is detected that the present accumulation metric satisfies a predetermined relationship with respect to the threshold value (e.g., is greater than the threshold value), then the UE transmits a timing advance request. An environmental condition can be, for example, a Doppler shift of a received signal, a Received Signal Strength Indication from a received signal, a temperature within the UE, a humidity within the UE, a supply voltage of the UE, or a symbol timing of a received signal.

摘要翻译： 用户设备（UE）在通信系统中的定时对齐是通过测量UE的环境状况来维持的，并且确定当前幅度的变化度量，其表示当前环境条件变化幅度相对于基准值。 将当前幅度的变化量度与先前的累积度量相结合以获得当前的累积度量。 如果检测到当前累积度量相对于阈值满足预定关系（例如，大于阈值），则UE发送​​定时提前请求。 环境条件可以是例如接收信号的多普勒频移，来自接收信号的接收信号强度指示，UE内的温度，UE内的湿度，UE的电源电压或符号定时 的接收信号。

公开(公告)号：US20070237261A1

公开(公告)日：2007-10-11

申请号：US11278878

申请日：2006-04-06

申请人： Bengt Lindoff ,  Johan Nilsson

发明人： Bengt Lindoff ,  Johan Nilsson

IPC分类号： H04L27/00

CPC分类号： H04B1/001 ,  H04B1/28 ,  H04B1/406 ,  H04W36/14 ,  H04W36/30 ,  H04W88/06

摘要： An apparatus, and a method performed by the apparatus, including a terminal with a front end receiver and analog filter (AF) operable throughout a bandwidth that is large enough to cover the total bandwidth used by different access technologies that the terminal supports. The terminal is operable to simultaneously extract from the output of a single front end receiver and AF the carrier frequencies and bandwidths of the different access technologies. This permits cell evaluation activity and an ongoing communication session to be conducted simultaneously with different access technologies on different bandwidths within the bandwidth of the analog filter and without interruption of the communication session.

摘要翻译： 一种由该装置执行的装置和方法，包括具有前端接收机和模拟滤波器（AF）的终端，该终端可在整个带宽内操作，该带宽足够大以覆盖终端支持的不同接入技术所使用的总带宽。 该终端可操作以从单个前端接收器的输出和AF同时提取不同接入技术的载波频率和带宽。 这允许小区评估活动并且持续的通信会话与模拟滤波器的带宽内的不同带宽上的不同接入技术同时进行，并且不中断通信会话。

公开(公告)号：US20070093253A1

公开(公告)日：2007-04-26

申请号：US11531219

申请日：2006-09-12

申请人： Bengt Lindoff ,  Robert Baldemair ,  Kambiz Zangi ,  Stefan Parkvall

发明人： Bengt Lindoff ,  Robert Baldemair ,  Kambiz Zangi ,  Stefan Parkvall

IPC分类号： H04Q7/20

CPC分类号： H04L27/2685 ,  H04B2201/70702 ,  H04J11/0069 ,  H04L5/0007 ,  H04L5/005 ,  H04L5/0053 ,  H04L5/0064 ,  H04L27/2613 ,  H04L27/2655

摘要： An apparatus and method operable to enable the use of synchronization (SCH) and broadcast channel (BCH) signals with a bandwidth (BW) equal to the minimum possible BW for the system, for example 1.25 MHz. The present invention increases the speed of the initial cell search. In addition, the repetition of signals in the frequency domain makes it possible to perform a faster cell detection in the event a system/mobile terminal/UE is using a larger BW. When the present invention is used in a high BW system, a mobile terminal/UE is operable to determine whether to perform a cell search on a low or high BW to get sufficient cell detection performance.

摘要翻译： 一种用于使能同步（SCH）和广播信道（BCH）信号的装置和方法，所述同步（SCH）和广播信道（BCH）信号的带宽（BW）等于系统的最小可能BW，例如1.25MHz。 本发明增加了初始小区搜索的速度。 此外，频域中的信号的重复使得可以在系统/移动终端/ UE正在使用较大的BW的情况下执行更快的小区检测。 当本发明用于高BW系统时，移动终端/ UE可操作以确定是否在低或高BW上执行小区搜索以获得足够的小区检测性能。

公开(公告)号：US07154966B2

公开(公告)日：2006-12-26

申请号：US10609917

申请日：2003-06-30

申请人： Peter Malm ,  Bengt Lindoff ,  Andreas Cedergren

发明人： Peter Malm ,  Bengt Lindoff ,  Andreas Cedergren

IPC分类号： H03D1/00

CPC分类号： H04L25/061 ,  H04B2201/709727 ,  H04L27/3809

摘要： A method and system are described for performing fast and simple M-QAM detection on received signals, such as a 16-QAM signal, by estimating M-QAM symbol constellation decision boundaries. Amplitude information is collected for in-phase and quadrature phase components of the received signal over a number of symbols. An average of the absolute value of the amplitude information of the in-phase components and of the quadrature phase components is determined over the number of symbols. The determined average absolute values of the in-phase and quadrature phase components provide a reference to produce the decision boundary estimates. Bias compensation may optionally be applied to the decision boundary estimates based on the estimated signal-to-interference ratio (“SIR”) of the received signal to produce bias corrected decision boundary estimates.

摘要翻译： 描述了一种方法和系统，用于通过估计M-QAM符号星座决定边界来对接收信号（例如16-QAM信号）进行快速和简单的M-QAM检测。 通过多个符号收集接收信号的同相和正交相位分量的幅度信息。 确定同相分量和正交相位分量的幅度信息的绝对值的平均值，符号数目。 确定的同相和正交相位分量的平均绝对值提供了产生决策边界估计的参考。 基于估计的接收信号的信号干扰比（“SIR”），可以将偏置补偿可选地应用于判定边界估计，以产生偏置校正的判定边界估计。

公开(公告)号：US07046720B2

公开(公告)日：2006-05-16

申请号：US10011571

申请日：2001-11-12

申请人： Bengt Lindoff ,  Peter Malm

发明人： Bengt Lindoff ,  Peter Malm

IPC分类号： H04B1/69 ,  H04B1/707 ,  H04B1/713

CPC分类号： H04B1/7101 ,  H04B1/7115 ,  H04B2201/70701 ,  H04L25/0206 ,  H04L25/0214 ,  H04L25/0228 ,  H04L25/062

摘要： A system and method for DC offset compensation wherein a received first signal is despread using a first spreading code to generate a second signal. The second signal along with a first set of pilot symbols is used to estimate a radio channel. The first signal is also despread using a second spreading code to generate a third signal. A DC offset is estimated from the third signal, the estimated radio channel and a second set of pilot symbols. The estimated DC offset may then be subtracted from the second signal.

公开(公告)号：US20060068791A1

公开(公告)日：2006-03-30

申请号：US10950732

申请日：2004-09-27

申请人： Bengt Lindoff

发明人： Bengt Lindoff

IPC分类号： H04B1/38

CPC分类号： H04B7/0654 ,  H01Q3/2605 ,  H04B7/0634 ,  H04W36/18 ,  H04W52/40 ,  H04W52/42 ,  H04W88/02

摘要： Wireless communication method and system for improving optimal antenna weight derivation in transmit diversity mode during soft handover. The method and system use scale factors that depend on the reliability of the feedback information (FBI) detection on the uplink. Depending on FBI detections for each link, the scale factors are then applied to the downlink channel response estimates. FBI detection performance may be based on downlink antenna verification, downlink transmit power control command “up/down” ratio, or both. Poor antenna verification or a high number of “power up” commands on the uplink may indicate unreliable FBI detection. By applying higher scale factors to downlink channel responses corresponding to reliable FBI detection, better closed transmit diversity performance during soft handovers may be achieved. This Abstract is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).

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。