TECHNIQUES FOR SELECTIVELY ADJUSTING WIRELESS COMMUNICATION PARAMETERS BASED ON AGGREGATED INTERFERENCE FROM LISTEN-BEFORE-TALK WIRELESS DEVICES

• US 20180139616A1
• Filed: 11/13/2017
• Published: 05/17/2018
• Est. Priority Date: 11/14/2016
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Khoshnevisan, Mostafa, Meshkati, Farhad, Kadous, Tamer, Yavuz, Mehmet, Patel, Chirag Sureshbhai
• Granted Patent: US 10,548,020 B2
• Time in Patent Office: Days
• CPC Class Codes: H04B 1/7097 Interference-related aspects
• CPC Class Codes: H04B 2201/709709 Methods of preventing interference
• CPC Class Codes: H04J 11/0026 of multi-user interference
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0073 Allocation arrangements that take into account other cell interferences for intercell interference mitigation or co-ordination in orthogonal multiplex systems H04J11/005
• CPC Class Codes: H04W 16/14 Spectrum sharing arrangements between different networks
• CPC Class Codes: H04W 28/02 Traffic management, e.g. flow control or congestion control
• CPC Class Codes: H04W 28/18 Negotiating wireless communication parameters
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 74/08 Non-scheduled access, e.g. ALOHA hybrid access H04W74/02
• CPC Class Codes: H04W 74/0808 using carrier sensing, e.g. carrier sense multiple access [CSMA]
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

One method includes identifying a listen-before-talk (LBT) silencing criterion between each pair of wireless devices in a plurality of wireless devices; dividing the plurality of wireless devices into a plurality of independent sets based at least in part on the identified LBT silencing criterions; determining, for a location, an aggregated interference value for each independent set; determining an aggregated interference value for the location based at least in part on the determined aggregated interference values for each independent set; and selectively adjusting a wireless communication parameter of at least one of the wireless devices to alter the aggregated interference value for the location.

Claims

1. A method for wireless communication, comprising:

identifying a listen-before-talk (LBT) silencing criterion between each pair of wireless devices in a plurality of wireless devices;

dividing the plurality of wireless devices into a plurality of independent sets based at least in part on the identified LBT silencing criterions;

determining, for a location, an aggregated interference value for each independent set;

determining an aggregated interference value for the location based at least in part on the determined aggregated interference values for each independent set; and

selectively adjusting a wireless communication parameter of at least one of the wireless devices to alter the aggregated interference value for the location.

2. The method of claim 1, wherein the LBT silencing criterion is a binary parameter indicating a potential for LBT silencing between a pair of wireless devices or no potential for LBT silencing between the pair of wireless devices.

3. The method of claim 1, wherein the LBT silencing criterion is based on at least one of:

a transmit power of each wireless device in a pair of wireless devices, a radio frequency (RF) distance between the wireless devices in the pair of wireless devices, at least one LBT parameter of each wireless device in the pair of wireless devices, or a combination thereof.

4. The method of claim 3, wherein the at least one LBT parameter comprises at least one of:

an energy detection (ED) threshold, a preamble detection capability, or a combination thereof.

5. The method of claim 1, wherein the identified LBT silencing criterions comprise at least one of:

non-directional LBT silencing criterions, directional LBT silencing criterions, or a combination thereof.

6. The method of claim 1, wherein the wireless communication parameter of the at least one of the wireless devices comprises at least one of:

an energy detection (ED) threshold, a transmit power, a usable frequency range, or a combination thereof.

7. An apparatus for wireless communication, comprising:

a processor;

memory in electronic communication with the processor; and

instructions stored in the memory, the instructions being executable by the processor to cause the apparatus to;

identify a listen-before-talk (LBT) silencing criterion between each pair of wireless devices in a plurality of wireless devices;

divide the plurality of wireless devices into a plurality of independent sets based at least in part on the identified LBT silencing criterions;

determine, for a location, an aggregated interference value for each independent set;

determine an aggregated interference value for the location based at least in part on the determined aggregated interference values for each independent set; and

selectively adjust a wireless communication parameter of at least one of the wireless devices to alter the aggregated interference value for the location.

8. The apparatus of claim 7, wherein the LBT silencing criterion is a binary parameter indicating a potential for LBT silencing between a pair of wireless devices or no potential for LBT silencing between the pair of wireless devices.

9. The apparatus of claim 7, wherein the LBT silencing criterion is based on at least one of:

a transmit power of each wireless device in a pair of wireless devices, a radio frequency (RF) distance between the wireless devices in the pair of wireless devices, at least one LBT parameter of each wireless device in the pair of wireless devices, or a combination thereof.

10. The apparatus of claim 9, wherein the at least one LBT parameter comprises at least one of:

an energy detection (ED) threshold, a preamble detection capability, or a combination thereof.

11. The apparatus of claim 7, wherein the identified LBT silencing criterions comprise at least one of:

non-directional LBT silencing criterions, directional LBT silencing criterions, or a combination thereof.

12. The apparatus of claim 7, wherein the wireless communication parameter of the at least one of the wireless devices comprises at least one of:

an energy detection (ED) threshold, a transmit power, a usable frequency range, or a combination thereof.

13. A method for wireless communication, comprising:

identifying a shared radio frequency spectrum occupancy parameter for each wireless device in a plurality of wireless devices;

identifying, for a location, an actual interference value from each wireless device in the plurality of wireless devices, wherein the actual interference value from a wireless device is based on the wireless device being in a transmit mode;

determining an average aggregated interference value for the location based at least in part on the identified shared radio frequency spectrum occupancy parameters and the identified actual interference values; and

selectively adjusting a wireless communication parameter of at least one of the wireless devices, to alter the average aggregated interference value for the location.

14. The method of claim 13, wherein determining the average aggregated interference value for the location comprises:

multiplying, for each wireless device in the plurality of wireless devices, the identified shared radio frequency spectrum occupancy for a wireless device and the identified actual interference value from the wireless device to generate a product for the wireless device; and

adding the generated products for the plurality of wireless devices.

15. The method of claim 13, further comprising:

receiving the shared radio frequency spectrum occupancy parameters from the plurality of wireless devices.

16. The method of claim 13, wherein the wireless communication parameter of the at least one of the wireless devices comprises at least one of:

an energy detection (ED) threshold, a transmit power, a usable frequency range, or a combination thereof.

17. An apparatus for wireless communication, comprising:

a processor;

memory in electronic communication with the processor; and

instructions stored in the memory, the instructions being executable by the processor to cause the apparatus to;

identify a shared radio frequency spectrum occupancy parameter for each wireless device in a plurality of wireless devices;

identify, for a location, an actual interference value from each wireless device in the plurality of wireless devices, wherein the actual interference value from a wireless device is based on the wireless device being in a transmit mode;

determine an average aggregated interference value for the location based at least in part on the identified shared radio frequency spectrum occupancy parameters and the identified actual interference values; and

selectively adjust a wireless communication parameter of at least one of the wireless devices, to alter the average aggregated interference value for the location.

18. The apparatus of claim 17, wherein the instructions executable by the processor to determine the average aggregated interference value for the location comprise instructions executable by the processor to cause the apparatus to:

multiply, for each wireless device in the plurality of wireless devices, the identified shared radio frequency spectrum occupancy for a wireless device and the identified actual interference value from the wireless device to generate a product for the wireless device; and

add the generated products for the plurality of wireless devices.

19. The apparatus of claim 17, wherein the instructions are executable by the processor to cause the apparatus to:

receive the shared radio frequency spectrum occupancy parameters from the plurality of wireless devices.

20. The apparatus of claim 17, wherein the wireless communication parameter of the at least one of the wireless devices comprises at least one of:

an energy detection (ED) threshold, a transmit power, a usable frequency range, or a combination thereof.