US 8,477,727 B2Granted

Methods for surreptitious manipulation of CDMA 2000 wireless devices

AssigneeL-3 Communications Corporation

InventorJames D Haverty

Life of this patent

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Abstract

Techniques for generating an interloping beacon which can control the behavior of a target wireless device on a CDMA frequency channel without noticeably altering the behavior of non-target wireless devices which share the frequency channel of the target wireless device's live beacon. The interloping beacon is an override beacon which overrides the live beacon's pilot channel and a control message on a code channel on which control messages may be addressed to the target wireless device. The override beacon provides the overriding pilot and the overriding control message only as long as is required for the target wireless device to respond to the overriding control message. The period of time during which the overriding pilot and the overriding control message are generated for the override beacon is so short that only the target wireless device responds without noticeable effect on collateral wireless devices.

Claims22

Dependent claims

A method of using an interloping beacon to cause a target wireless device to respond to an overriding control message provided by the interloping beacon rather than to a control message provided by a live beacon of the target wireless device, the target wireless device operating on a frequency channel of the live beacon in a wireless network that operates according to a standard that employs code division multiplexing to define code channels in the frequency channel, the code channels including a pilot channel for a pilot provided by the live beacon, the target wireless device responding to the pilot of the live beacon by listening for a control message provided by the live beacon on another code channel, the control message occurring in the other code channel at a location which is determined by the standard, and

the method comprising the steps performed by a signal generator which generates the interloping beacon of:
on the frequency channel of the live beacon, generating an overriding pilot on the pilot channel to which the target wireless device responds rather than to the pilot of the live beacon;
and
on the frequency channel of the live beacon, generating the overriding control message at the location in the other code channel specified by the standard for the control message provided by the live beacon,
the overriding pilot and the overriding control message being generated by the signal generator only as long as required to cause the target wireless device to respond to the overriding control message rather than to the control message provided by the live beacon, whereby causing the target wireless device to respond to the overriding control message does not cause another wireless device operating on the frequency channel to respond to the overriding pilot in a manner which is noticeable by a user of the other wireless device.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/846,633Filed 29 Jul 2010 · us provisional application
Priority: 29 Jul 2009
Published: US 2010/0309884 A19 Dec 2010
Granted: 2 Jul 2013
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

H04W 60/04
Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration: using triggered events
H04L 63/30
Network architectures or network communication protocols for network security: for supporting lawful interception, monitoring or retaining of…
H04W 12/02
Security arrangements; Authentication; Protecting privacy or anonymity: protecting privacy or anonymity, e.g. protecting personally identifiable…
H04W 12/80
Security arrangements; Authentication; Protecting privacy or anonymity: arrangements enabling lawful interception [LI]