METHODS AND APPARATUS FOR ENHANCED COEXISTENCE ALGORITHMS IN WIRELESS SYSTEMS
First Claim
1. A method for reducing interference in a wireless coexistence system, the wireless coexistence system including at least two differing wireless network interfaces that operate in at least a partially overlapping frequency band, the method comprising:
- determining a receiver signal strength index (RSSI) at the wireless coexistence system;
determining a noise floor associated with the wireless coexistences system; and
implementing a coexistence algorithm to reduce interference in the wireless coexistence system based at least in part on the determined RSSI and determined noise floor.
1 Assignment
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Accused Products
Abstract
Methods and apparatus for mitigating the effects of interference between multiple air interfaces located on an electronic device. In one embodiment, the air interfaces include a WLAN interface and PAN (e.g., Bluetooth) interface, and information such as Receiver Signal Strength Index (RSSI) as well as system noise level information are used in order to intelligently execute interference mitigation methodologies, including the selective application of modified frequency selection, variation of transmitter power, and/or change of operating mode (e.g., from multiple-in multiple-out (MIMO) to single-in, single-out (SISO)) so as to reduce isolation requirements between the interfaces. These methods and apparatus are particularly well suited to use cases where the WLAN interface is operating with high data transmission rates. Business methods associated with the foregoing technology are also described.
38 Citations
28 Claims
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1. A method for reducing interference in a wireless coexistence system, the wireless coexistence system including at least two differing wireless network interfaces that operate in at least a partially overlapping frequency band, the method comprising:
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determining a receiver signal strength index (RSSI) at the wireless coexistence system; determining a noise floor associated with the wireless coexistences system; and implementing a coexistence algorithm to reduce interference in the wireless coexistence system based at least in part on the determined RSSI and determined noise floor. - View Dependent Claims (2, 3, 4, 5, 6)
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7-11. -11. (canceled)
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12. A method for reducing interference in a wireless coexistence system, the wireless coexistence system including two wireless interfaces that operate in at least a partially overlapping frequency band, the method comprising:
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determining a receiver signal strength index at one of the interfaces and based on the determined receiver signal strength index, selecting one of at least two different frequency use maps for a first of the two interfaces; and determining a noise value associated with the wireless coexistence system and based on the determined noise value, selecting one of a plurality of operating modes of operation of a second of the two interfaces, the selected mode adjusting the transmit power of the second interface. - View Dependent Claims (13, 14, 15)
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16. A method of operating a device having first and second air interfaces so as to mitigate interference therebetween without imposing time-sharing restrictions on either of the interfaces, the method comprising:
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determining a received signal strength using at least one of the interfaces; determining a noise parameter using at least one of the interfaces; based on the acts of determining, selectively implementing a frequency use mapping for the first interface that substantially avoids one or more emitted sidebands associated with transmission from the second interface. - View Dependent Claims (17, 18)
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19. A method of operating a device having first and second wireless interfaces which overlap in frequency at least in part, the method comprising reducing the isolation requirements between the first and second interfaces through selective use of (i) frequency mapping for the first interface;
- (ii) change in transmitter power for the second interface;
wherein the selective use is based in part on both signal strength and noise floor measurements within or proximate to the device.
- (ii) change in transmitter power for the second interface;
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20-22. -22. (canceled)
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23. A wireless apparatus configured to reduce interference between at least two different wireless network interfaces, the apparatus comprising:
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a first wireless network interface; a second wireless network interface; where the first and second wireless network interfaces are configured to operate in at least a partially overlapping frequency band; a processor; and a non-transitory computer-readable medium with at least one computer program stored thereon, the at least one computer program configured to, when executed on the processor, cause the wireless apparatus to; determine a receiver signal strength index (RSSI) at the first wireless network interface; determine a noise floor associated with the first wireless network interface; and implement a coexistence algorithm with the second wireless network interface to reduce interference of the first wireless network interface based at least in part on the determined RSSI and determined noise floor. - View Dependent Claims (24, 25, 26)
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27. A wireless apparatus configured to reduce interference between at least two different wireless network interfaces, the apparatus comprising:
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a first wireless network interface; a second wireless network interface, the first and second wireless network interfaces configured to operate in at least a partially overlapping frequency band; a processor; and a non-transitory computer-readable medium with at least one computer program stored thereon, the at least one computer program configured to, when executed on the processor, cause the wireless apparatus to; determine a receiver signal strength index (RSSI) at the first wireless network interface and based on the determined RSSI, select one of at least two different frequency use maps; and determine a noise value associated with the wireless apparatus and based on the determined noise value, select one of a plurality of operating modes of operation of the second wireless network interface; where the selected mode is configured to adjust the transmit power of the second wireless network interface.
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28. A wireless apparatus configured to operate a first and second air interfaces so as to mitigate interference therebetween without imposing time-sharing restrictions on either of the interfaces, the wireless apparatus comprising:
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a first wireless interface; a second wireless interface; a processor; and computerized logic configured to cause the wireless apparatus to; determine a received signal strength using at least one of the first and second wireless interfaces; determine a noise parameter using at least one of the first and second wireless interfaces; and based on the determined received signal strength and noise parameter, selectively implement a frequency use mapping for the first wireless interface that substantially avoids one or more emitted sidebands associated with transmission from the second wireless interface.
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Specification