公开(公告)号：US06704328B1

公开(公告)日：2004-03-09

申请号：US09360680

申请日：1999-07-26

申请人： Farideh Khaleghi ,  Nimal G. Senarath ,  Geng Wu ,  Robert Matyas ,  Parsyna R. Larijani ,  Mo-Han Fong

发明人： Farideh Khaleghi ,  Nimal G. Senarath ,  Geng Wu ,  Robert Matyas ,  Parsyna R. Larijani ,  Mo-Han Fong

IPC分类号： H04J322

CPC分类号： H04W52/362 ,  H04W52/26

摘要： In a wireless communications system, after a high data rate user is admitted and a supplemental channel is assigned to the user, a control message is sent to a receiver to communicate for power ramp-up and ramp-down profiles. The control message contains parameters of a data rate, a starting time and a duration of time as group in assigned fields in the message which is provided by a control signal source. In response to the control message, a controller provides a rate controllable signal with reference to the parameters of the control message to a data encoder. A bursty input data stream is fed to a buffer. The data encoder withdraws the data from the buffer in response to the rate controllable signal. The bit rate transitions in the bursty input data stream are smoothed with reference to the parameters. There is provided an output data stream having smoother data rate transitions than the input data stream. It is possible to solve problems with 3G CDMA systems which have sudden interference changes resulting from the bursty nature of high-speed data transmissions.

摘要翻译： 在无线通信系统中，在高数据速率用户被允许并且向用户分配补充信道之后，控制消息被发送到接收机以进行功率提升和斜降曲线的通信。 控制消息包含由控制信号源提供的消息中的分配字段中的组的数据速率，开始时间和持续时间的参数。 响应于控制消息，控制器参考控制消息的参数向数据编码器提供速率可控信号。 突发输入数据流被馈送到缓冲器。 数据编码器响应于速率可控信号从缓冲器中提取数据。 参考参数对突发输入数据流中的比特率转换进行平滑处理。 提供了具有比输入数据流更平滑的数据速率转换的输出数据流。 可以解决由于高速数据传输的突发性而导致的突发的干扰变化的3G CDMA系统的问题。

公开(公告)号：US06907271B2

公开(公告)日：2005-06-14

申请号：US09939231

申请日：2001-08-24

申请人： Nimal G. Senarath ,  Robert Matyas ,  Leo L. Strawczynski

发明人： Nimal G. Senarath ,  Robert Matyas ,  Leo L. Strawczynski

IPC分类号： H04W16/24 ,  H04W16/28 ,  H04M1/00

CPC分类号： H04W16/28 ,  H04W16/24

摘要： A method for reducing interference in a wireless system, and a system for performing the method. The wireless system should include at least two, and preferably four, beam formers and a plurality of mobile units. The method includes the steps of transmitting beams B1, B2, B3 and B4 into first, second, third and fourth beam areas, respectively. At least two sub-areas are defined within each of the first, second, third and fourth beam areas based upon the degree of overlap with adjacent beam areas, whereby each of the beam areas includes at least one overlapping sub-area and at least one non-overlapping sub-area. The method further includes coding signals of the beams B1, B2, B3 and B4 for receipt by a particular mobile unit based upon which one of the sub-areas that the particular mobile unit is located within.

摘要翻译： 一种用于减少无线系统中的干扰的方法，以及用于执行该方法的系统。 无线系统应包括至少两个，优选地四个波束形成器和多个移动单元。 该方法包括以下步骤：将波束B 1，B 2，B 3和B 4分别发送到第一，第二，第三和第四波束区域。 基于与相邻波束区域的重叠程度，至少两个子区域被定义在第一，第二，第三和第四波束区域的每一个内，由此每个波束区域包括至少一个重叠的子区域和至少一个 不重叠的子区域。 该方法还包括编码波束B 1，B 2，B 3和B 4的信号，以便由特定移动单元基于特定移动单元位于哪一个子区域内的哪个子区域进行接收。

公开(公告)号：US06603746B1

公开(公告)日：2003-08-05

申请号：US09335745

申请日：1999-06-18

申请人： Parsya R. Larijani ,  Nimal G. Senarath ,  Adnan Abu-Dayya

发明人： Parsya R. Larijani ,  Nimal G. Senarath ,  Adnan Abu-Dayya

IPC分类号： H04J316

CPC分类号： H04W52/12 ,  H04L1/0021 ,  H04W52/20 ,  H04W52/225 ,  H04W52/24

摘要： A method, apparatus and computer-readable storage medium for use in a communications system wherein the transmit power of a wireless link is adjusted so that link performance meets a target level. The method consists of dynamically adjusting the target level as a function of the traffic characteristics of the link. It may be executed at a base station or mobile unit. To perform the method, the apparatus or storage medium (a) computes a threshold instantaneous performance parameter as a first function of a measured instantaneous performance parameter, a measured instantaneous bit rate and at least one target error performance parameter; and (b) generates a power control command based upon a second function of the measured instantaneous performance parameter and the threshold instantaneous performance parameter. This provides a smoothing effect of the interference induced to other users and may result in increased cell capacity.

摘要翻译： 一种在通信系统中使用的方法，装置和计算机可读存储介质，其中调整无线链路的发射功率，使得链路性能满足目标级别。 该方法包括根据链路的流量特性动态调整目标水平。 它可以在基站或移动单元处执行。 为了执行该方法，装置或存储介质（a）计算阈值瞬时性能参数作为测量的瞬时性能参数，测量的瞬时比特率和至少一个目标误差性能参数的第一函数; 和（b）基于测量的瞬时性能参数和阈值瞬时性能参数的第二函数产生功率控制命令。 这提供了对其他用户引起的干扰的平滑效果，并且可能导致增加的小区容量。

公开(公告)号：US06778499B1

公开(公告)日：2004-08-17

申请号：US09335746

申请日：1999-06-18

申请人： Nimal G. Senarath ,  Parsya R. Larijani ,  Adnan Abu-Dayya

发明人： Nimal G. Senarath ,  Parsya R. Larijani ,  Adnan Abu-Dayya

IPC分类号： H04L1226

CPC分类号： H04L47/10 ,  H04L47/225 ,  H04L47/25 ,  H04L47/29 ,  H04L47/30 ,  H04W28/14 ,  H04W28/22

摘要： A method and apparatus for smoothing bit rate transitions in a bursty input data stream. The method includes the steps of receiving the input data stream in a buffer, periodically measuring the occupancy level of the buffer and withdrawing the contents of the buffer at an output rate. In a simple embodiment of the invention, the output rate is increased if the buffer occupancy level is above a threshold occupancy level and decreased if the buffer occupancy level is below a second threshold intensity, where both threshold occupancy levels are dependent on the current output rate. The output rate is made dependent on the buffer occupancy level, which allows the output data stream to have smoother data rate transitions than does the input data stream. As a result, there is little degradation of service quality to other users of the system upon establishing the bursty connection and problems related to convergence of power levels across the entire system are practically eliminated. Furthermore, power amplifier requirements in the transmitter may be relaxed, which can prevent outages of the high-speed link itself. Also, since there are fewer abrupt changes in the output rate, there will be fewer abrupt changes in the induced interference, leading to a higher percentage of call admissions which are retained and hence the capacity is increased.

摘要翻译： 一种用于平滑突发输入数据流中的比特率转换的方法和装置。 该方法包括以下步骤：在缓冲器中接收输入数据流，周期性地测量缓冲器的占用水平并以输出速率取出缓冲器的内容。 在本发明的简单实施例中，如果缓冲器占用水平高于阈值占用水平，则输出速率增加，并且如果缓冲器占用水平低于第二阈值强度则降低，其中两个阈值占用水平取决于当前的输出速率 。 输出速率取决于缓冲器占用水平，这允许输出数据流具有比输入数据流更平滑的数据速率转换。 结果，在建立突发连接时，系统的其他用户的服务质量几乎没有降低，实际上消除了与整个系统的功率级别的收敛相关的问题。 此外，发射机中的功率放大器要求可以放宽，这可以防止高速链路本身的中断。 此外，由于产出率突然变化较少，导致的干扰突然变化较少，导致保留的呼叫比例较高，因此容量增加。