Interference reduction using signal quality
View Patent ↗Techniques are described for interference reduction using, e.g., a Received Signal Strength Indicator (RSSI) or packet error rate threshold. UEs that implement these techniques may reduce interference among personal area network enabled devices, for example, with the added benefit of reducing power consumption by reduced RF transmissions. By reducing interference, the performance of personal area network devices may be improved.
1. A device, comprising:
a personal area network (PAN) transceiver configured to:
receive at the device, from an advertising station, an advertisement message, the advertisement message comprising a request to establish a new communication channel with the advertising station;
responsive to the advertisement message, determine a signal strength for a wireless signal which carried the advertisement message; and
communicate with the advertising station to establish the new communication channel; and
PAN controller circuitry coupled to the PAN transceiver, the PAN controller circuitry configured to:
access a record comprising information about a historical signal strength at which a past communication channel was established;
responsive to the record, set a threshold for the signal strength;
monitor an ambient activity level of a PAN;
adjust the threshold according to the ambient activity level of the PAN;
determine whether the signal strength is above the threshold;
responsive to determining that the signal strength is above the threshold, cause the PAN transceiver to send a response to the advertising station to establish the new communication channel, the response comprising information of the signal strength; and
responsive to determining that the signal strength is below the threshold, forgo generating and sending the response to the advertisement message.
2. The device of claim 1 , wherein the PAN controller circuitry is configured to have a reduced probability of response to the advertisement message when the advertising station intentionally reduces the signal strength of the wireless signal.
3. The device of claim 1 , wherein the PAN controller circuitry is configured to determine that:
the device is an intended communication partner with the advertising station when the device is determined to be proximate to the advertising station; and
the device is an incidental communication partner with the advertising station when the device is determined to be not proximate to the advertising station.
4. A method, comprising:
accessing a record of a historical signal quality level at which a past communication channel was established;
responsive to the record, setting a signal quality threshold;
monitoring an ambient activity level of a personal area network (PAN);
adjusting the signal quality threshold according to the ambient activity level of the PAN;
receiving an advertisement message via an over-the-air protocol;
determining a signal quality characteristic for the advertisement message;
comparing the signal quality characteristic to the signal quality threshold;
responsive to determining, via the comparing, that the signal quality characteristic exceeds the signal quality threshold, transmitting a response to the advertisement message, the response comprising the determined signal quality characteristic; and
when the signal quality characteristic fails to exceed the signal quality threshold, forgoing generating and sending the response to the advertisement message.
5. The method of claim 4 , wherein determining the signal quality characteristic comprises determining a signal strength.
6. The method of claim 4 , wherein determining the signal quality characteristic comprises determining an error rate.
7. The method of claim 4 , further comprising activating an interference reduction setting on a device, the interference reduction setting allowing discrimination of the advertisement message based on the signal quality characteristic.
8. The method of claim 7 , wherein activating the interference reduction setting on the device comprises intentionally reducing the signal quality characteristic of the advertisement message to reduce a probability of response.
9. The method of claim 4 , wherein transmitting the response comprises transmitting a request for a connection.
10. The method of claim 4 , wherein transmitting the response comprises transmitting a response to an active scan.
11. The method of claim 4 , further comprising determining if a device that received the advertisement message is an intended recipient responsive to the signal quality threshold.
12. The method of claim 4 , further comprising monitoring an ambient activity level for the over-the-air protocol.
13. A device, comprising:
a transceiver configured to:
receive, from a transmitter, an advertisement message via a wireless protocol; and
determine a signal quality characteristic for the advertisement message; and wireless interface controller circuitry configured to:
access a record based on a historical signal quality level at which a past communication channel was established;
responsive to the record, set a signal quality threshold;
monitor an ambient activity level of a personal area network (PAN);
adjust the signal quality threshold according to the ambient activity level of the PAN;
determine whether the signal quality characteristic for the advertisement message exceeds the signal quality threshold;
responsive to determining that the signal quality characteristic exceeds the signal quality threshold, cause the transceiver to transmit a response to the advertisement message, the response comprising the determined signal quality characteristic; and
when the signal quality threshold is not exceeded, forgo generating and transmitting the response to the advertisement message.
14. The device of claim 13 , wherein:
the signal quality characteristic comprises a signal strength; and
the transceiver comprises a detector configured to measure the signal strength.
15. The device of claim 13 , wherein the wireless interface controller circuitry is configured to determine if the device is an intended recipient responsive to the signal quality threshold.
16. The device of claim 13 , wherein the wireless interface controller circuitry is configured to have a reduced probability of response to the advertisement message when the transmitter intentionally reduces the signal quality characteristic of the advertisement message.
17. The device of claim 13 , wherein:
the signal quality characteristic comprises an error rate; and
the transceiver comprises a detector configured to measure the error rate.
18. The device of claim 13 , wherein the transceiver is configured to transmit the response by transmitting a request for a connection.
19. The device of claim 13 , wherein the transceiver is configured to transmit the response by transmitting a response to an active scan.