Multi-mode communication unit

• US 8,666,341 B2
• Filed: 08/01/2011
• Issued: 03/04/2014
• Est. Priority Date: 10/22/2010
• Status: Expired due to Fees

• Current Assignee: Ultra Electronics TCS, Inc. (Ultra Electronics Holdings PLC)
• Original Assignee: Ultra Electronics TCS, Inc. (Ultra Electronics Holdings PLC)
• Inventors: Marsolais, Alexandre, Forte, Michel, Couillard, Denis
• Primary Examiner(s): Rego, Dominic E
• Application Number:
  US13/195,305
• Publication Number:
  US 20120302155A1
• Time in Patent Office: 946 Days
• Field of Search: 455/127.4, 455/426.1, 455/432.1, 455/434, 455/435.1, 455/435.2, 455/436, 455/552.1, 455/553.1, 455/160.1, 370331-334
• US Class Current: 455/127.4
• CPC Class Codes: H04K 1/003 by varying carrier frequency at or within predetermined or random intervals H04K1/04 takes precedence
• CPC Class Codes: H04K 1/08 by varying the polarisation of transmitted waves
• CPC Class Codes: H04K 2203/18 for wireless local area networks or WLAN
• 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 3/44 characterized by the control of the jamming waveform or modulation type
• 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"

Abstract

There is described a method of operating a multi-mode communication unit. For each radio frame of a radio communication frame structure, the unit selectively sets a mode of radio frequency operation for one of transmission and reception for a selected radio frame duration, for operation in a radio communication mode of operation or in a sensing mode of operation. The unit may also interrupt a transmission task within a given radio frame at a time selected in accordance with a sensing instant of a second communication unit to which the data being transmitted and perform a different task for a duration of the sensing instant of the second communication unit.

Claims

1. A method of operating a multi-mode communication unit, the method comprising:

for each radio frame of a radio communication frame structure, selectively setting a mode of radio frequency operation for one of transmission and reception and selectively setting a given radio frame duration, for operation of the unit in at least one of a radio communication mode of operation and a sensing mode of operation; and

interrupting a task within a given radio frame at a time selected in accordance with a set of priorities determined by the unit, and performing a different task for a given radio frame duration, the different task and the given radio frame duration being selected by the unit.

2. The method of claim 1, wherein the set of priorities comprises optimizing frame use of the data structure, and wherein interrupting a task comprises interrupting a transmission of data within a given frame at a time selected in accordance with a sensing instant of a second communication unit to which the data is being transmitted and performing the different task for a duration of the sensing instant of the second communication unit.

3. The method of claim 2, wherein the different task is one of spoofing, jamming, sensing, and receiving.

4. The method of claim 1, further comprising selectively setting a first mode of radio frequency operation for one of transmitting and receiving at a first frequency and selectively setting a second mode of radio frequency operation for one of transmitting and receiving at a second frequency, for respective given radio frame durations, the unit operating in the first mode at the first frequency and the second mode at the second frequency concurrently.

5. The method of claim 4, wherein a change of the mode of radio frequency operation used in a specific radio frame may occur for both the first mode of operation and the second mode of operation concurrently.

6. The method of claim 1, further comprising selecting an optimum channel for one of communicating, sensing, jamming, and spoofing, in real time by changing at least one of frequency and polarization of the unit on a radio frame per radio frame basis.

7. The method of claim 6, further comprising using an information exchange protocol with the second communication unit, where sensing is performed prior to applying a correction to polarization or mode of radio frequency operation.

8. A multi-mode communication unit comprising:

a central module connected to at least one receiver, at least one transmitter, and a waveform processor and adapted for selectively setting a mode of radio frequency operation for each radio frame of a radio communication frame structure for one of transmission and reception for a given radio frame duration, for operation of the unit in at least one of a radio communication mode of operation and a sensing mode of operation; and

a task module adapted for selecting a task for a given radio frame wherein the task module comprises a decision engine that selects the task and the given radio frame duration.

9. The unit of claim 8, further comprising:

an electronic counter measures (ECM) module for determining jamming waveforms for transmission; and

an electronic counter counter measures (ECCM) module for determining waveforms to counter ECM;

wherein the central module is also adapted for receiving data from the ECM module and the ECCM module and for selectively setting a mode of operation of at least one of ECM and ECCM.

10. The unit of claim 8, wherein the task module is adapted for selecting the task for the given radio frame in accordance with a set of priorities comprising optimizing frame use of the radio communication frame structure, and wherein the decision engine is adapted for interrupting a transmission of data within a given radio frame at a time selected in accordance with a sensing instant of a second communication unit to which the data is being transmitted and performing a different task for a duration of the sensing instant of the second communication unit.

11. The unit of claim 10, wherein the different task is one of spoofing, jamming, sensing, and receiving.

12. The unit of claim 8, wherein the decision engine determines at least one of the task, frequency of the unit, and polarization of the unit at least in part on at least one of external requests and policies from a network or a user.

13. The unit of claim 8, wherein the central module is also adapted to selectively set a first mode of radio frequency operation for one of transmitting and receiving at a first frequency and selectively set a second mode of radio frequency operation for one of transmitting and receiving at a second frequency, for respective given radio frame durations, the unit operating in the first mode at the first frequency and the second mode at the second frequency concurrently.

14. The unit of claim 13, wherein the decision module is adapted to perform interrupts for both the first mode of radio frequency operation and the second mode of radio frequency operation concurrently.

15. The unit of claim 8, wherein the central module is adapted to select an optimum channel for one of communicating, sensing, jamming, and spoofing in real time by changing at least one of frequency and polarization of the unit on a radio frame per radio frame basis.