Device, system and method of securing wireless communication

• US 7,751,353 B2
• Filed: 03/23/2006
• Issued: 07/06/2010
• Est. Priority Date: 12/29/2005
• Status: Active Grant

• Current Assignee: Celeno Communications (Israel) Ltd.
• Original Assignee: Celeno Communications (Israel) Ltd.
• Inventors: Shapira, Nir, Rozen, Gilad
• Primary Examiner(s): Appiah; Charles N
• Assistant Examiner(s): Vu; Michael T
• Application Number:
  US11/386,879
• Publication Number:
  US 20070153714A1
• Time in Patent Office: 1,566 Days
• Field of Search: 370/310, 370/466, 370/445, 370/338, 370/347, 370/328, 370/348, 375/340
• US Class Current: 370/310
• CPC Class Codes: H04K 2203/18 for wireless local area networks or WLAN
• CPC Class Codes: H04K 2203/32 including a particular configuration of antennas
• CPC Class Codes: H04K 2203/34 involving multiple cooperating jammers
• CPC Class Codes: H04K 3/00 Jamming of communication; Counter-measures
• CPC Class Codes: H04K 3/28 with jamming and anti-jamming mechanisms both included in a same device or system, e.g. wherein anti-jamming includes prevention of undesired self-jamming resulting from jamming
• CPC Class Codes: H04K 3/41 characterized by the control of the jamming activation or deactivation time control of jamming activation and deactivation time only for the purpose of alternating between jamming mode and target monitoring mode H04K3/45
• CPC Class Codes: H04K 3/45 characterized by including monitoring of the target or target signal, e.g. in reactive jammers or follower jammers for example by means of an alternation of jamming phases and monitoring phases, called "look-through mode"
• CPC Class Codes: H04K 3/825 by jamming
• CPC Class Codes: H04L 2025/03414 Multicarrier
• CPC Class Codes: H04L 2025/03426 transmission using multiple-input and multiple-output channels
• CPC Class Codes: H04L 2025/03802 Signalling on the reverse channel
• CPC Class Codes: H04L 25/0204 of multiple channels
• CPC Class Codes: H04L 25/0222 Estimation of channel variability, e.g. coherence bandwidth, coherence time, fading frequency
• CPC Class Codes: H04L 25/03343 Arrangements at the transmitter end
• CPC Class Codes: H04L 63/1475 Passive attacks, e.g. eavesdropping or listening without modification of the traffic monitored
• CPC Class Codes: H04W 12/02 Protecting privacy or anonymity, e.g. protecting personally identifiable information [PII]
• CPC Class Codes: H04W 12/12 Detection or prevention of fraud
• CPC Class Codes: H04W 12/122 Counter-measures against attacks; Protection against rogue devices
• CPC Class Codes: H04W 72/046 the resource being in the space domain, e.g. beams

Abstract

Some demonstrative embodiments of the invention include methods, devices and/or systems to secure a wireless transmission. The method may include, for example, transmitting a noise transmission to be received by one or more destinations other than an intended destination of a packet during a time period corresponding to a duration of the packet. Other embodiments are described and claimed.

Claims

1. A method of securing wireless communication, the method comprising:

transmitting, using a spatial division multiple access transmission scheme, a noise transmission to be received by one or more destinations other than an intended destination of a packet during a time period corresponding to a duration of said packet, wherein transmitting said noise transmission comprises transmitting a set of N spatial channels using a set of N respective antennas; and

generating said set of N spatial channels by applying a precoding matrix to a set of inputs including a null-beam transmission and one or more dither sequences, wherein said precoding matrix includes a beamforming vector based on channel state information of said intended destination and one or more additional vectors orthogonal to said beamforming vector.

2. The method of claim 1, wherein transmitting said noise transmission comprises selectively transmitting said noise transmission based on at least one of said intended destination and an origin of said packet.

3. The method of claim 2 wherein said selectively transmitting comprises comparing at least one of an address representing said intended destination and an address representing said origin to a set of one or more predefined addresses.

4. The method of claim 1 comprising determining said time period based on at least one of a duration field and a length field of said packet.

5. The method of claim 1, wherein the one or more dither sequences include N−

1 dither sequences, and said one or more additional vectors include N−

1 additional vectors.

6. The method of claim 1 comprising synchronizing said noise transmission to a fast-Fourier-transform window of said detected packet.

7. An apparatus to secure wireless communication, the apparatus comprising:

a transmission sentinel to transmit a noise transmission to be received by one or more destinations other than an intended destination of a packet during a time period corresponding to a duration of said packet, wherein said sentinel comprises a spatial division multiple access transmission scheme to transmit said noise transmission and wherein said transmission scheme comprises a set of N antennas to transmit a set of N spatial channels, respectively, the sentinel comprising a channel generator to generate said set of N channels by applying a precoding matrix to a set of inputs including a null-beam transmission and one or more dither sequences, wherein said precoding matrix includes a beamforming vector based on channel state information of said intended destination and one or more additional vectors orthogonal to said beamforming vector.

8. The apparatus of claim 7, wherein said sentinel is able to selectively transmit said noise transmission based on at least one of said intended destination and an origin of said packet.

9. The apparatus of claim 8, wherein said sentinel is able to compare at least one of an address representing said intended destination and an address representing said origin to a set of one or more predefined addresses.

10. The apparatus of claim 7, wherein said sentinel is able to determine said time period based on at least one of a duration field and a length field of said packet.

11. The apparatus of claim 7, wherein the one or more dither sequences include N−

1 dither sequences, and said one or more additional vectors include N−

1 additional vectors.

12. The apparatus of claim 7, wherein said sentinel is able to synchronize said noise transmission to a fast-Fourier-transform window of said detected packet.

13. A wireless communication system comprising:

one or more wireless communication devices to transmit and receive packets; and

a transmission sentinel to transmit a noise transmission to be received by one or more destinations other than an intended destination station of a detected packet during a time period corresponding to a duration of said detected packet, wherein said sentinel comprises a spatial division multiple access transmission scheme to transmit said noise transmission and wherein said transmission scheme comprises a set of N antennas to transmit a set of N spatial channels, respectively, the sentinel comprising a channel generator to generate said set of N channels by applying a precoding matrix to a set of inputs including a null-beam transmission and one or more dither sequences, wherein said precoding matrix includes a beamforming vector based on channel state information of said intended destination and one or more additional vectors orthogonal to said beamforming vector.

14. The system of claim 13, wherein said sentinel is able to selectively transmit said noise transmission based on at least one of said intended destination and an origin of said packet.

15. The system of claim 14, wherein said sentinel is able to compare at least one of an address representing said intended destination and an address representing said origin to a set of one or more predefined addresses.

16. The system of claim 13, wherein said sentinel is able to determine said time period based on at least one of a duration field and a length field of said packet.

17. The system of claim 13, wherein said sentinel is able to synchronize said noise transmission to a fast-Fourier-transform window of said detected packet.