Performance of a receiver in interfering conditions

• US 20060209779A1
• Filed: 06/10/2003
• Published: 09/21/2006
• Est. Priority Date: 06/10/2003
• Status: Active Grant

• Current Assignee: Nokia Technologies Oy (Nokia Corporation)
• Original Assignee: Nokia Corporation
• Inventors: Leinonen, Marko, Rousu, Seppo
• Granted Patent: US 7,796,560 B2
• Time in Patent Office: Days
• US Class Current: 370/343
• CPC Class Codes: G01S 19/21 Interference related issues ; Issues related to cross-correlation, spoofing or other methods of denial of service

Abstract

A device 22 includes a communication system transceiver 40 for exchanging signals in a first frequency band and a receiver 30 for receiving signals in a second frequency band. In order to improve the performance of the receiver. A processing portion 34 of the devices detects the presence of signals interfering with the signals in the second frequency band and also determines a timing pattern for interfering signals based on a timing information which is indicative of the timing for transmissions employed by the transceiver 40. A manipulation of signals reaching the receiver 30 during intervals defined by the determined timing pattern is then done, in order to reduce a performance degradation due to interfering signals originating from a transmitter 21 employing the same timing for transmissions as the transceiver 40. A corresponding method is also disclosed.

Claims

1. Device (22) comprising:

a communication system transceiver (40) for exchanging signals via a radio interface in a first frequency band;

a receiver (30) for receiving signals via a radio interface in a second frequency band;

a processing portion (34) for detecting presence of interfering signals in said second frequency band

and for determining a timing pattern for detected interfering signals based on a timing information provided by said communication system transceiver (40), which timing information is indicative of timing for transmissions employed by said communication system transceiver (40);

said processing portion (34) for causing a manipulation of signals reaching said receiver (30) during time intervals defined by a determined timing pattern, in order to reduce a performance degradation due to interfering signals originating from a transmitter (21) employing a same timing for transmissions as said communication system transceiver (40) of said device (22).

2. Device (22) according to claim 1, wherein said processing portion (41) detecting the presence of interfering signals in said second frequency band forms part of said communication system transceiver (40).

3. Device (22) according to claim 1, wherein said processing portion (34) detecting the presence of interfering signals in said second frequency band forms part of said receiver (30).

4. Device (22) according to claim 1, wherein said receiver (30) includes an attenuating component (33), and wherein said processing portion (34) for causing a manipulation of signals reaching said receiver (30) causes said manipulation by varying an attenuation applied by said attenuating component (33) based on said timing pattern for attenuating signals received by said receiver (30).

5. Device (22) according to claim 4, wherein said processing portion (34) for causing a manipulation of signals reaching said receiver (30) sets said attenuation higher as an intensity of detected interfering signals becomes higher.

6. Device according to claim 1, wherein said processing portion for causing a manipulation of signals reaching said receiver causes said manipulation by causing a blocking of a reception of said signals based on said timing pattern.

7. Device according to claim 1, wherein said processing portion for causing a manipulation of signals reaching said receiver causes said manipulation by causing a disregarding of said signals in an evaluation of said signals based on said timing pattern.

8. Device according to claim 1, wherein said processing portion for causing a manipulation of signals reaching said receiver causes said manipulation by detuning said second frequency range.

9. Device (22) according to claim 1, wherein said processing portion (34) is for causing a manipulation of signals reaching said receiver (30) in time intervals during which said communication system transceiver (40) of said device (22) transmits signals at least with a certain power level, in order to reduce a performance degradation due to interfering signals originating from said communication system transceiver (40) of said device (22).

10. Device (22) according to claim 1, wherein said receiver (30) is a satellite positioning system receiver.

11. Device according to claims 1, wherein said receiver is a digital video broadcast-terrestrial receiver.

12. Method for improving the performance of a receiver (30), which receiver (30) is combined in a single device (22) with a communication system transceiver (40) exchanging signals via a radio interface in a first frequency band, and which receiver (30) receives signals via a radio interface in a second frequency band, said method comprising:

detecting presence of interfering signals in said second frequency band;

determining a timing pattern for detected interfering signals based on a timing information which is indicative of timing for transmissions employed by said communication system transceiver (40); and

manipulating signals reaching said receiver (30) during time intervals defined by said timing pattern, in order to reduce a performance degradation due to interfering signals originating from a transmitter (21) employing a same timing for transmissions as said communication system transceiver (40) of said device (22).

13. Method according to claim 12, further comprising manipulating signals reaching said receiver (30) during time intervals in which said communication system transceiver (40) of said device (22) transmits signals at least with a certain power level, in order to reduce a performance degradation due to interfering signals originating from said communication system transceiver (40) of said device (22).

14. Method according to claim 12, wherein signals reaching said receiver (30) are manipulated by applying an attenuation to signals received by said receiver (30).

15. Method according to claim 14, wherein said attenuation applied to signals reaching said receiver (30) is made higher in correspondence to higher intensity of detected interfering signals.

16. Method according to claim 12, wherein signals reaching said receiver are manipulated by being blocked from reception by said receiver.

17. Method according to claim 12, wherein signals reaching said receiver are manipulated by being disregarded in an evaluation of signals in said receiver.

18. Method according to claim 12, wherein signals reaching said receiver are manipulated by detuning said second frequency range.