公开(公告)号：US20160277565A1

公开(公告)日：2016-09-22

申请号：US15077051

申请日：2016-03-22

Applicant: Verint Systems Ltd.

Inventor： Arik Poznanski ,  Itai Langer

IPC: H04M3/22 ,  H04W72/04

CPC classification number: H04M3/2281 ,  H04L63/304 ,  H04M2201/18 ,  H04M2207/18 ,  H04W12/02 ,  H04W72/042

Abstract: Methods and systems for monitoring communication of mobile communication terminals, such as cellular phones. An off-air monitoring system reconstructs both directions of a call conducted between two mobile terminals by receiving only downlink channels. The off-air monitoring system receives multiple downlink transmissions transmitted by base stations in a wireless communication network. The system uses the received downlink transmissions to reconstruct the bidirectional call content of calls conducted between wireless terminals. In order to reconstruct the bidirectional content of a given call, the system identifies and correlates the two downlink transmissions of that call from among the multiple received downlink transmissions.

Abstract translation: 用于监视诸如蜂窝电话的移动通信终端的通信的方法和系统。 无线监控系统通过仅接收下行链路信道来重建在两个移动终端之间进行呼叫的两个方向。 空中监视系统在无线通信网络中接收由基站发送的多个下行链路传输。 系统使用所接收的下行链路传输来重建在无线终端之间进行的呼叫的双向呼叫内容。 为了重建给定呼叫的双向内容，系统从多个接收的下行链路传输中识别并关联该呼叫的两个下行链路传输。

公开(公告)号：US20160142076A1

公开(公告)日：2016-05-19

申请号：US14926653

申请日：2015-10-29

Applicant: Verint Systems Ltd.

Inventor： Arik Poznanski ,  Benjamin Imanilov

IPC: H03M13/41 ,  H04L1/00

CPC classification number: H03M13/41 ,  H03M13/3723 ,  H04L1/0054

Abstract: Methods and systems for decoding monitored communication signals using previously identified side information. Information, which is used for decoding a given frame and is provided to the decoder not via the main communication channel between a base station and a mobile station, is referred to herein as “side information.” The side information can also be viewed as extrinsic information that was derived during previous decoding operations. The monitoring system holds, for certain frames, a-priori information of one or more data values that are expected in these frames. Decoding using this a-priori information enables an Error Correcting Code decoder to successfully decode such frames, which would otherwise fail to decode.

Abstract translation: 用于使用先前识别的侧面信息来解码所监视的通信信号的方法和系统。 用于对给定帧进行解码并且不经由基站和移动站之间的主通信信道而被提供给解码器的信息在本文中被称为“辅助信息”。侧信息也可以被视为外在的 在之前的解码操作中导出的信息。 对于某些帧，监视系统保持在这些帧中预期的一个或多个数据值的先验信息。 使用这种先验信息的解码使得纠错码解码器成功解码这样的帧，否则这些帧将无法解码。