公开(公告)号：US08929908B2

公开(公告)日：2015-01-06

申请号：US11553955

申请日：2006-10-27

Applicant: Avneesh Agrawal ,  Dmitry R. Milikovsky ,  Peter J. Black

Inventor： Avneesh Agrawal ,  Dmitry R. Milikovsky ,  Peter J. Black

IPC: H04W72/00 ,  H04B17/00

CPC classification number: H04B17/005 ,  H04B17/345 ,  H04B17/382

Abstract: Method and apparatus for estimating reverse link loading in a wireless communication system. The reverse link interference is measured and reverse link receiver noise is measured. The reverse link interference is compared to the reverse link receiver noise, for example, by dividing the interference power by the receiver noise power. The reverse link receiver noise can be measured in an orthogonal frequency division multiple access (OFDMA) system by nulling transmission from access terminals within the cell and nearby during a null time and frequency interval. Power measure in the null time and frequency interval is receiver noise power. The reverse link interference can be measure by several means. For example, local null time and frequency intervals can be designated. The access terminals within the cell null their transmissions during the local time and frequency intervals. Access terminals outside the cell continue to transmit during the local time and frequency intervals. Power measured in the local time and frequency interval is interference power. As another example, interference power can be measured by subtracting pairs of pilot symbols that are contiguous to each other in time or frequency.

Abstract translation: 用于估计无线通信系统中的反向链路负载的方法和装置。 测量反向链路干扰，并测量反向链路接收机噪声。 将反向链路干扰与反向链路接收机噪声进行比较，例如通过将干扰功率除以接收机噪声功率。 反向链路接收机噪声可以在正交频分多址（OFDMA）系统中通过在空时间和频率间隔期间对来自小区内和附近的接入终端的发送进行归零来测量。 无效时间和频率间隔的功率测量是接收机噪声功率。 反向链路干扰可以通过几种手段进行测量。 例如，可以指定局部空时间和频率间隔。 小区内的接入终端在本地时间和频率间隔期间使其传输失效。 小区外的接入终端在本地时间和频率间隔内继续传输。 在本地时间和频率间隔测量的功率是干扰功率。 作为另一示例，可以通过在时间或频率上减去彼此连续的导频符号对来测量干扰功率。