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1.发明授权公开(公告)号：US08054946B1
公开(公告)日：2011-11-08
申请号：US11609872
申请日：2006-12-12
IPC分类号： H04M1/24
CPC分类号： H04L43/0858
摘要： A pilot signal is transmitted from a transmitting device through a communication network under test to a receiving device. The pilot signal is transmitted at a known transmit time and in a voice channel. Incoming signals within the voice channel at the receiving device are monitored to detect receipt of the pilot signal. A receipt time of the pilot signal at the receiving device is identified. The one-way delay (OWD) is determined as a difference between the receipt time of the pilot signal at the receiving device and the transmit time of the pilot signal from the transmitting device.
摘要翻译： 导频信号通过被测通信网从发送装置发送到接收装置。 导频信号在已知的发送时间和语音信道中发送。 监视接收装置的语音信道内的接收信号，以检测导频信号的接收。 识别在接收装置处的导频信号的接收时间。 单向延迟（OWD）被确定为在接收设备处的导频信号的接收时间与来自发送设备的导频信号的发送时间之间的差。
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公开(公告)号：US07660331B1
公开(公告)日：2010-02-09
申请号：US11609863
申请日：2006-12-12
CPC分类号： H04L1/243 , H04L41/5009 , H04L41/5087 , H04L43/50
摘要： A pilot signal is prepended to a communication signal to form a test signal. The test signal is transmitted through a communication network and received from the communication network. A temporal marker in the pilot signal portion of the received test signal is identified. The communication signal portion of the received test signal is known to begin at a specified time following the temporal marker. Using the identified temporal marker and the specified time, a beginning of the communication signal portion is identified within the received test signal. The identified beginning of the communication signal portion in the received test signal is then aligned with a beginning of an undegraded version of the communication signal.
摘要翻译： 一个导频信号被添加到通信信号中以形成一个测试信号。 测试信号通过通信网络发送并从通信网络接收。 识别接收到的测试信号的导频信号部分中的时间标记。 接收的测试信号的通信信号部分已知是在时间标记之后的指定时间开始的。 使用所识别的时间标记和指定时间，在所接收的测试信号内识别通信信号部分的开始。 所接收的测试信号中的通信信号部分的识别开始然后与通信信号的未降级版本的开始对齐。
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