Method for a single radio aggregated spectrum receiver, computer program, receiver, and terminal

• US 8,724,751 B2
• Filed: 05/12/2009
• Issued: 05/13/2014
• Est. Priority Date: 05/16/2008
• Status: Active Grant

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Lindoff, Bengt, Sundstrm, Lars
• Primary Examiner(s): Bocure, Tesfaldet
• Application Number:
  US12/992,029
• Publication Number:
  US 20110150122A1
• Time in Patent Office: 1,827 Days
• Field of Search: 375/219, 375/285, 375/295, 375/316, 375/346, 375/358, 375/377, 375/350, 370/310, 370328-330, 455/450, 455/452.1, 455/452.2
• US Class Current: 375/346
• CPC Class Codes: H04B 1/0003 Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain digital baseband systems H04L25/00; digital modulation/demodulation H04L27/00; CDMA H04B1/707; TDMA H04B7/2643; image transmission H04N5/00
• CPC Class Codes: H04B 1/005 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
• CPC Class Codes: H04B 1/1027 assessing signal quality or detecting noise/interference for the received signal
• CPC Class Codes: H04B 1/1036 with automatic suppression of narrow band noise or interference, e.g. by using tuneable notch filters H04B1/123 takes precedence; filter circuits H03H
• CPC Class Codes: H04B 1/406 with more than one transmission mode, e.g. analog and digital modes
• CPC Class Codes: H04W 72/54 based on quality criteria

Abstract

A method for a single radio aggregated spectrum receiver of a terminal arranged to operate in a radio network is disclosed. The method comprises receiving information from a network node of the radio network about frequency properties of an aggregated spectrum to be received; determining information about the aggregated spectrum comprising at least one of presence of blocking interferer(s) interspersed with, and pass bands within the aggregated spectrum; and providing filter(s) based on the determined information about the aggregated spectrum such that desired signals are passed and any blocking interferer(s) are attenuated. Corresponding computer program, receiver and terminal are also disclosed.

Claims

1. A method for a single radio aggregated spectrum receiver of a terminal arranged to operate in a radio network, comprising:

receiving information on a control signal from a network node of the radio network about frequency properties of an aggregated spectrum to be received;

determining information about the aggregated spectrum from the received information comprising at least one of presence of one or more blocking interferers interspersed with, and pass bands within the aggregated spectrum; and

providing one or more filters based on the determined information about the aggregated spectrum such that desired signals are passed and the one or more blocking interferers are attenuated.

2. The method according to claim 1, wherein determining information about the aggregated spectrum comprises estimating frequencies free from blocking interspersed interferers.

3. The method according to claim 1, wherein determining information about the aggregated spectrum comprises receiving information about pass bands within the aggregated spectrum from the network node.

4. The method according to claim 1, wherein the providing of filters comprises assigning a notch filter bank such that the one or more blocking interferers interspersed with the aggregated spectrum are attenuated.

5. The method according to claim 1, wherein the providing of one or more filters comprises assigning a pass band filter bank such that only desired signals of the aggregated spectrum is passed.

6. The method according to claim 1, further comprising sending information to the network node about the pass bands and signal-to-interference ratio of the pass bands, such that communication between the terminal and the network node is enabled in the aggregated spectrum.

7. The method according to claim 1, wherein determining of information about the aggregated spectrum and providing of one or more filters based on the determined information are updated regularly.

8. The method according to claim 1, wherein the one or more filters comprise one or more complex filters.

9. A non-transitory computer readable storage medium having stored therein a computer program comprising computer executable instructions causing a processor to perform a method when executed thereon, wherein the method is for a single radio aggregated spectrum receiver of a terminal arranged to operate in a radio network, and wherein the method comprises:

receiving information on a control signal from a network node of the radio network about frequency properties of an aggregated spectrum to be received;

determining information about the aggregated spectrum from the received information comprising at least one of presence of one or more blocking interferers interspersed with, and pass bands within the aggregated spectrum; and

providing one or more filters based on the determined information about the aggregated spectrum such that desired signals are passed and the one or more blocking interferers are attenuated.

10. A single radio aggregated spectrum receiver for a terminal arranged to operate in a radio network, comprising:

a front end receiving circuit comprising programmable filters; and

a control signal detector arranged to detect received information on a control signal from a network node of the radio network about frequency properties of an aggregated spectrum to be received, and determine information about the aggregated spectrum from the received information comprising at least one of presence of one or more blocking interferers interspersed with, and pass bands within the aggregated spectrum, such that the programmable filters are set based on the determined information about the aggregated spectrum such that desired signals are passed and the one or more blocking interferers are attenuated.

11. The receiver according to claim 10, wherein the control signal detector further is arranged to estimate frequencies free from blocking interspersed interferers such that information about the aggregated spectrum is determined.

12. The receiver according to claim 10, wherein the control signal detector further is arranged to receive information about pass bands within the aggregated spectrum from the network node such that information about the aggregated spectrum is determined.

13. The receiver according to claim 10, wherein the programmable filters are configured to a notch filter bank such that the one or more blocking interferers interspersed with the aggregated spectrum are attenuated.

14. The receiver according to claim 10, wherein the programmable filters are configured to a pass band filter bank such that only desired signals of the aggregated spectrum is passed.

15. The receiver according to claim 10, further comprising a transmitter arranged to send information to the network node about the pass bands and signal-to-interference ratio of the pass bands, such that communication between the terminal and the network node is enabled in the aggregated spectrum.

16. The receiver according to claim 10, being arranged to determine information about the aggregated spectrum and update filters based on the determined information regularly.

17. The receiver according to claim 10, wherein the programmable filters comprise complex filters.

18. A terminal for operation in a radio network, comprising a receiver according to claim 10.

19. The terminal according to claim 18, being a mobile phone, a portable digital assistant, a laptop computer, or a digital camera.