Method of selecting and broadcasting over a transmission frequency and device for the same

• US 8,509,695 B2
• Filed: 07/10/2008
• Issued: 08/13/2013
• Est. Priority Date: 07/10/2007
• Status: Expired due to Fees

• Current Assignee: Belkin International Incorporated (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Belkin International Incorporated (Hon Hai Precision Industry Co., Ltd.)
• Inventors: King, Randy, Jackson, Scott, Lee, Jeong, Kung, Wesley, Foo, James, Wong, Jerry (Ngai-Chiu), Ferdman, Kelly, Gale, Vannin
• Primary Examiner(s): Alam, Fayyaz
• Assistant Examiner(s): Bilodeau, David
• Application Number:
  US12/171,202
• Publication Number:
  US 20090130978A1
• Time in Patent Office: 1,860 Days
• Field of Search: 455/62
• US Class Current: 455/62
• CPC Class Codes: H03J 1/0066 with means for analysing the received signal strength H03J1/0083 takes precedence
• CPC Class Codes: H03J 1/0091 provided with means for scanning over a band of frequencies H03J1/0058 takes precedence
• CPC Class Codes: H04B 1/3822 specially adapted for use in vehicles H04B1/3827 takes precedence
• CPC Class Codes: H04B 7/2603 Arrangements for wireless physical layer control H04B7/2612 takes precedence

Abstract

In some embodiments, a method of identifying at least one transmission frequency in a set of carrier frequencies can include: (a) determining a first signal strength for each carrier frequency in the set of carrier frequencies; (b) choosing a first transmission frequency from the set of carrier frequencies at least partially based on the first signal strength of each of the carrier frequencies of the set of carrier frequencies; and (c) broadcasting electrical signals over the first transmission frequency. Other embodiments are disclosed herein.

Claims

1. A method of identifying at least one transmission frequency in a set of carrier frequencies using an electrical device, the method comprising:

determining a first signal strength of each carrier frequency in the set of carrier frequencies using the electrical device;

determining a second signal strength of each carrier frequency in the set of carrier frequencies using the electrical device;

using the electrical device to choose a first transmission frequency of the at least one transmission frequency from the set of carrier frequencies based on the second signal strength of each carrier frequency of the set of carrier frequencies; and

broadcasting electrical signals over the first transmission frequency using the electrical device;

wherein;

the at least one transmission frequency comprises the first transmission frequency; and

determining the second signal strength of each carrier frequency in the set of carrier frequencies using the electrical device comprises;

assigning the second signal strength of at least one carrier frequency of the set of carrier frequencies at least partially based on (i) a first received signal strength indication of the at least one carrier frequency of the set of carrier frequencies and (ii) the first signal strength of the at least one carrier frequency in the set of carrier frequencies.

2. The method of claim 1, further comprising:

determining a third signal strength of each carrier frequency in the set of carrier frequencies using the electrical device;

using the electrical device to choose a second transmission frequency of the at least one transmission frequency from the set of carrier frequencies based on the third signal strength of each carrier frequency in the set of carrier frequencies; and

broadcasting the electrical signals over the second transmission frequency using the electrical device;

wherein;

the first signal strength is determined at a first time;

the second signal strength is determined at a second time different from the first time;

the third signal strength is determined at a third time different from the first time and the second time; and

the at least one transmission frequency further comprises the second transmission frequency.

3. The method of claim 2, wherein:

determining the third signal strength of each carrier frequency in the set of carrier frequencies using the electrical device comprises;

assigning the third signal strength of at least one of;

(a) the at least one carrier frequency of the set of carrier frequencies at least partially based on (i) a second received signal strength indication of the at least one carrier frequency of the set of carrier frequencies, and (ii) at least one of the first signal strength or the second signal strength of the at least one carrier frequency of the set of carrier frequencies;

or

(b) at least one other carrier frequency of the set of carrier frequencies at least partially based on (i) a second received signal strength indication of the at least one other carrier frequency of the set of carrier frequencies, and (ii) at least one of the first signal strength or the second signal strength of the at least one other carrier frequency of the set of carrier frequencies.

4. The method of claim 3, further comprising at least one of:

measuring the first received signal strength indication of the at least one carrier frequency of the set of carrier frequencies;

or

measuring the second received signal strength indication of the at least one of;

(a) the at least one carrier frequency of the set of carrier frequencies or (b) the at least one other carrier frequency of the set of carrier frequencies.

5. The method of claim 1, wherein:

determining the first signal strength of each carrier frequency in the set of carrier frequencies using the electrical device comprises;

assigning the first signal strength of at least one of;

(a) the at least one carrier frequency of the set of carrier frequencies at least partially based on (i) a previous received signal strength indication of the at least one carrier frequency of the set of carrier frequencies, and (ii) a previous signal strength of the at least one carrier frequency of the set of carrier frequencies;

or

(b) at least one other carrier frequency of the set of carrier frequencies at least partially based on (i) a previous received signal strength indication of the at least one other carrier frequency of the set of carrier frequencies, and (ii) a previous signal strength of the at least one other carrier frequency of the set of carrier frequencies.

6. The method of claim 1, further comprising:

tuning a transmitter to the first transmission frequency.

7. The method of claim 1, further comprising:

providing the first transmission frequency to a user by visually displaying the first transmission frequency to the user.

8. The method of claim 1, further comprising:

providing the first transmission frequency;

wherein;

providing the first transmission frequency comprises;

transmitting the first transmission frequency to a radio frequency receiver; and

automatically tuning the radio frequency receiver to the first transmission frequency.

9. The method of claim 1, further comprising:

encoding identifying information into an alternative frequency portion of radio broadcast data system data of a second carrier frequency.

10. The method of claim 9, further comprising:

using the electrical device to transmit the identifying information.

11. The method of claim 10, wherein:

using the electrical device to transmit the identifying information comprises;

using the electrical device to transmit the identifying information over the alternative frequency portion of the radio broadcast data system data of the second carrier frequency.

12. The method of claim 1, further comprises:

using the electrical device to transmit identifying information for a first empty transmission frequency over a subcarrier frequency of a second carrier frequency in the set of carrier frequencies.

13. The method of claim 10, further comprising:

receiving the identifying information using a receiver;

automatically tuning the receiver to the first transmission frequency after receiving the identifying information; and

using the receiver to receive the electrical signals broadcast over the first transmission frequency.

14. The method of claim 10, further comprising:

using the electrical device to transmit the identifying information before using the electrical device to broadcast the electrical signals over the first transmission frequency.

15. A method of identifying at least one transmission frequency in a set of carrier frequencies using an electrical device, the method comprising:

determining a first signal strength of each carrier frequency in the set of carrier frequencies using the electrical device;

determining a second signal strength of each carrier frequency in the set of carrier frequencies using the electrical device;

ranking each carrier frequency of the set of carrier frequencies according to the second signal strength of each carrier frequency in the set of carrier frequencies to create a potential transmission frequency list comprising at least one potential transmission frequency;

using the electrical device to choose a first transmission frequency of the at least one transmission frequency from the potential transmission frequency list that is based on the second signal strength of each carrier frequency of the set of carrier frequencies; and

broadcasting electrical signals over the first transmission frequency using the electrical device;

wherein;

the at least one transmission frequency comprises the first transmission frequency;

the first signal strength is determined at a first time;

the second signal strength is determined at a second time different from the first time;

determining the second signal strength of each carrier frequency in the set of carrier frequencies using the electrical device comprises;

assigning the second signal strength of at least one carrier frequency of the set of carrier frequencies at least partially based on (i) a first received signal strength indication of the at least one carrier frequency of the set of carrier frequencies and (ii) the first signal strength of the at least one carrier frequency in the set of carrier frequencies; and

using the electrical device to choose the first transmission frequency comprises;

using the electrical device to choose as the first transmission frequency a first potential transmission frequency of the at least one potential transmission frequency comprising a highest ranked carrier frequency of the each carrier frequency of the set of carrier frequencies;

wherein;

the at least one potential transmission frequency comprises multiple potential transmission frequencies; and

the method further comprises;

before using the electrical device to choose the first transmission frequency, removing a transmission frequency of the at least one potential transmission frequency from the potential transmission frequency list based on characteristics of one or more carrier frequencies of the set of carrier frequencies adjacent to a carrier frequency of the set of carrier frequencies comprising the second potential transmission frequency;

wherein;

removing the second potential transmission frequency of the at least one potential transmission frequency from the potential transmission frequency list comprises;

removing the second potential transmission frequency, of the at least one potential transmission frequency from the potential carrier frequency list when at least one of the following is true;

a received adjacent signal strength indication of at least one of the one or more carrier frequencies of the set of carrier frequencies adjacent to the carrier frequency of the set of carrier frequencies comprising the second potential transmission frequency is above a first predetermined amount;

or

a received potential transmission signal strength indication of the carrier frequency of the set of carrier frequencies comprising the second potential transmission frequency is greater or less by a second predetermined amount than the received adjacent signal strength indication of at least one of the one or more carrier frequencies of the set of carrier frequencies adjacent to the carrier frequency of the set of carrier frequencies that corresponds with the second potential transmission frequency by a second predetermined amount.

16. The method of claim 15, further comprising:

determining a third signal strength of each carrier frequency in the set of carrier frequencies using the electrical device;

using the electrical device to choose a second transmission frequency of the at least one transmission frequency from the set of carrier frequencies based on the third signal strength of each carrier frequency in the set of carrier frequencies; and

broadcasting the electrical signals over the second transmission frequency using the first electrical device;

wherein;

the third signal strength is determined at a third time different from the first time and the second time; and

the at least one transmission frequency further comprises the second transmission frequency.

17. The method of claim 16, wherein:

determining the third signal strength of each carrier frequency in the set of carrier frequencies using the electrical device comprises;

assigning the third signal strength of at least one of;

(a) the at least one carrier frequency of the set of carrier frequencies at least partially based on (i) a second received signal strength indication of the at least one carrier frequency of the set of carrier frequencies, and (ii) at least one of the first signal strength or the second signal strength of the at least one carrier frequency of the set of carrier frequencies;

or

(b) at least one other carrier frequency of the set of carrier frequencies at least partially based on (i) a second received signal strength indication of the at least one other carrier frequency of the set of carrier frequencies, and (ii) at least one of the first signal strength or the second signal strength of the at least one other carrier frequency of the set of carrier frequencies.

18. The method of claim 17, further comprising at least one of:

measuring the first received signal strength indication of the at least one carrier frequency of the set of carrier frequencies;

or

measuring the second received signal strength indication of the at least one of;

(a) the at least one carrier frequency of the set of carrier frequencies or (b) the at least one other carrier frequency of the set of carrier frequencies.

19. The method of claim 15, wherein:

determining the first signal strength of each carrier frequency in the set of carrier frequencies using the electrical device comprises;

assigning the first signal strength of at least one of;

(a) the at least one carrier frequency of the set of carrier frequencies at least partially based on (i) a previous received signal strength indication of the at least one carrier frequency of the set of carrier frequencies, and (ii) a previous signal strength of the at least one carrier frequency of the set of carrier frequencies;

or

(b) at least one other carrier frequency of the set of carrier frequencies at least partially based on (i) a previous received signal strength indication of the at least one other carrier frequency of the set of carrier frequencies, and (ii) a previous signal strength of the at least one other carrier frequency of the set of carrier frequencies.

20. The method of claim 15, further comprising at least one of:

tuning a transmitter to the first transmission frequency;

or

providing the first transmission frequency to a user by visually displaying the first transmission frequency to the user.

21. The method of claim 15, further comprising

providing the first transmission frequency;

wherein;

providing the first transmission frequency comprises;

transmitting the first transmission frequency to a radio frequency receiver; and

automatically tuning the radio frequency receiver to the first transmission frequency.

22. The method of claim 15, further comprising:

encoding identifying information into an alternative frequency portion of radio broadcast data system data of a second carrier frequency.

23. The method of claim 22, further comprising:

using the electrical device to transmit the identifying information.

24. The method of claim 23, wherein:

using the electrical device to transmit the identifying information comprises;

using the electrical device to transmit the identifying information over the alternative frequency portion of the radio broadcast data system data of the second carrier frequency.

25. The method of claim 15, further comprising:

using the electrical device to transmit identifying information for a first empty transmission frequency over a subcarrier frequency of a second carrier frequency in the set of carrier frequencies.

26. The method of claim 23, further comprising:

receiving the identifying information using a receiver;

automatically tuning the receiver to the first transmission frequency after receiving the identifying information; and

using the receiver to receive the electrical signals broadcast over the first transmission frequency.

27. The method of claim 23, wherein:

using the electrical device to transmit the identifying information occurs before using the electrical device to broadcast the electrical signals over the first transmission frequency.