公开(公告)号：US20140024349A1

公开(公告)日：2014-01-23

申请号：US13872224

申请日：2013-04-29

Applicant: Verint Systems Ltd.

Inventor： Arik Poznanski ,  Itai Langer

IPC: H04M3/22

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：US10999070B2

公开(公告)日：2021-05-04

申请号：US16124335

申请日：2018-09-07

Applicant: Verint Systems Ltd.

Inventor： Itai Langer ,  Gil Leibovich

IPC: H04L29/06 ,  H04L9/12 ,  H04W12/00 ,  H04W84/04

Abstract: Systems and methods for monitoring voice and SMS communication exchanged over a UMTS network is described wherein a technique for quickly testing different Count-C values, until the correct value is ascertained is used. The Count-C parameter consists of a HyperFrame Number (HFN) and the system iteratively attempts to decrypt the packets using a series of candidate HFNs. For each of these candidate HFNs, and for each of the packets, the system produces a candidate Count-C by appending the sequence number (SN). The system then uses the candidate Count-C to calculate a candidate keystream block. Subsequently, the system uses the candidate keystream blocks to decrypt the packets, and then tests whether the packets were correctly decrypted. If the system deems the decryption successful, the system stops iterating through the candidate HFNs, and uses the candidate HFN that correctly decrypted the packets to decrypt subsequent packets in the communication session.

公开(公告)号：US09350853B2

公开(公告)日：2016-05-24

申请号：US13872224

申请日：2013-04-29

Applicant: Verint Systems Ltd.

Inventor： Arik Poznanski ,  Itai Langer

IPC: H04M3/22

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：US10057409B2

公开(公告)日：2018-08-21

申请号：US15394932

申请日：2016-12-30

Applicant: Verint Systems Ltd.

Inventor： Arik Poznanski ,  Itai Langer

IPC: H04M3/22 ,  H04W72/04 ,  H04L29/06 ,  H04W12/02

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.

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：US20190089535A1

公开(公告)日：2019-03-21

申请号：US16124335

申请日：2018-09-07

Applicant: Verint Systems Ltd.

Inventor： Itai Langer ,  Gil Leibovich

IPC: H04L9/12

Abstract: Systems and methods for monitoring voice and SMS communication exchanged over a UMTS network is described wherein a technique for quickly testing different Count-C values, until the correct value is ascertained is used. The Count-C parameter consists of a HyperFrame Number (HFN) and the system iteratively attempts to decrypt the packets using a series of candidate HFNs. For each of these candidate HFNs, and for each of the packets, the system produces a candidate Count-C by appending the sequence number (SN). The system then uses the candidate Count-C to calculate a candidate keystream block. Subsequently, the system uses the candidate keystream blocks to decrypt the packets, and then tests whether the packets were correctly decrypted. If the system deems the decryption successful, the system stops iterating through the candidate HFNs, and uses the candidate HFN that correctly decrypted the packets to decrypt subsequent packets in the communication session.

公开(公告)号：US20170180548A1

公开(公告)日：2017-06-22

申请号：US15394932

申请日：2016-12-30

Applicant: Verint Systems Ltd.

Inventor： Arik Poznanski ,  Itai Langer

IPC: H04M3/22 ,  H04W12/02 ,  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.

公开(公告)号：US09565295B2

公开(公告)日：2017-02-07

申请号：US15077051

申请日：2016-03-22

Applicant: Verint Systems Ltd.

Inventor： Arik Poznanski ,  Itai Langer

IPC: H04W72/04 ,  H04M3/22

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。