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

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.