Avoidance of interference in wireless communications

Patent metadata

Field	Value
Publication number	US-10117112-B2
Application number	US-201615379023-A
Country	US
Kind code	B2
Filing date	Dec 14, 2016
Priority date	Dec 14, 2015
Publication date	Oct 30, 2018
Grant date	Oct 30, 2018

Abstract

In one embodiment, a terminal of a first wireless communication network determines a protection zone for each of a plurality of unintended receivers of a second wireless communication network, where a protection zone defines a geographical area where transmission by the terminal might interfere with operation of a corresponding unintended receive. At the time of an attempted transmission, the terminal determines its current location, and whether the current location is within any protection zone of the plurality of unintended receivers. If not within any protection zone of the plurality of unintended receivers, the terminal performs the transmission, but if so, then the terminal may then perform a local assessment of interference to the one or more unintended receivers. Once concluding that there would be no interference with any of the one or more unintended receivers, the terminal may then perform the transmission. Otherwise, the terminal prevents the transmission.

First claim

What is claimed is:

1. A method, comprising:
determining, by a terminal of a first wireless communication network, a protection zone for each of a plurality of unintended receivers of a second wireless communication network, wherein a protection zone defines a geographical area where transmission by the terminal might interfere with operation of a corresponding unintended receiver;
determining, by the terminal at a time of an attempted transmission to an intended receiver in the first wireless communication network, a current location of the terminal;
determining, by the terminal, whether the current location is within any protection zone of the plurality of unintended receivers;
performing the transmission by the terminal in response to the current location not being within any protection zone of the plurality of unintended receivers;
performing, by the terminal in response the current location being within a protection zone of one or more of the plurality of unintended receivers, a local assessment of interference to the one or more unintended receivers;
performing the transmission by the terminal in response to the local assessment of interference concluding that there would be no interference with any of the one or more unintended receivers; and
preventing the transmission by the terminal in response to the local assessment of interference concluding that there would be interference with any of the one or more unintended receivers.

2. The method as in claim 1 , wherein the first wireless communication network is a satellite communication network and the second wireless communication network is a point-to-point (PtP) communication network.

3. The method as in claim 1 , wherein determining the protection zone for each of the plurality of unintended receivers of the second wireless communication network comprises:
receiving the protection zone for each of the plurality of unintended receivers from a server.

4. The method as in claim 1 , wherein protection zones are per channel, and wherein the attempted communication corresponds to a particular channel, and wherein determining whether the current location is within any protection zone of the plurality of unintended receivers is based on protection zones corresponding to the particular channel.

5. The method as in claim 1 , wherein protection zones are defined as a data structure selected from a group consisting of: a simplified polygon; a complex polygon; and major and minor horizons.

6. The method as in claim 1 , wherein the local assessment comprises:
performing a link budget calculation to the one or more unintended receivers from the terminal to determine whether the attempted transmission would interfere with any of the one or more unintended receivers.

7. The method as in claim 6 , wherein the link budget calculation is based on a direction of the attempted transmission toward the intended receiver and the direction of the attempted transmission with respect to the one or more unintended receivers.

8. The method as in claim 6 , further comprising:
determine whether the attempted transmission would interfere with any of the one or more unintended receivers based on a calculated receive power at the one or more unintended receivers crossing a threshold related to a noise floor of the respective unintended receiver.

9. The method as in claim 6 , further comprising:
accounting for one or more measurement inaccuracies within the link budget calculation.

10. The method as in claim 6 , wherein the link budget calculation is based on transmission polarity of the attempted transmission, and a receive polarity of the one or more unintended receivers.

11. The method as in claim 1 , wherein the local assessment comprises:
determining whether the terminal is within a line-of-sight to the one or more unintended receivers based on terrain mapping.

12. The method as in claim 1 , wherein the local assessment comprises:
concluding that interference could occur with any of the one or more unintended receivers in response to the current location being within a protection zone of the one or more unintended receivers.

13. The method as in claim 1 , further comprising:
confirming, based on information received on non-interfering signals at the terminal from the first communication network, that the protection zone for each of the plurality of unintended receivers of the second wireless communication network is up-to-date prior to determining whether the current location is within any protection zone of the plurality of unintended receivers.

14. The method as in claim 1 , further comprising:
determining to attempt transmission in the first wireless communication network in response to determining that transmission in a third wireless communication network is unavailable to the terminal at the time of the attempted transmission.

15. The method as in claim 1 , further comprising:
determining a communication configuration to use for the transmission by the terminal to establish the transmission as causing no interference with any of the plurality of unintended receivers.

16. The method as in claim 1 , further comprising:
determining a particular communication channel to use for the transmission in response to a plurality of communication channels causing no interference with any of the plurality of unintended receivers.

17. The method as in claim 1 , further comprising:
ceasing the attempted transmission in response to instructions received by the terminal from the first wireless communication network.

18. The method as in claim 1 , wherein the terminal is a device configuration selected from a group consisting of: a standalone device; a device physically attached to a personal mobile device; a device that is communicatively paired to a personal mobile device; an Internet of Things (IoT) device; an unmanned aerial vehicle (UAV); and an application operating on a personal mobile device.

19. A tangible, non-transitory, computer-readable medium having computer-executable instructions stored thereon that, when executed by a processor on a computer of a terminal of a first wireless communication network, cause the computer to perform a method comprising:
determining a protection zone for each of a plurality of unintended receivers of a second wireless communication network, wherein a protection zone defines a geographical area where transmission by the terminal might interfere with operation of a corresponding unintended receiver;
determining, at a time of an attempted transmission to an intended receiver in the first wireless communication network, a current location of the terminal;
determining whether the current location is within any protection zone of the plurality of unintended receivers;
permitting the transmission by the terminal in response to the current location not being within any protection zone of the plurality of unintended receivers;
performing, in response the current location being within a protection zone of one or more of the plurality of unintended receivers, a local assessment of interference to the one or more unintended receivers;
permitting the transmission by the terminal in response to the local assessment of interference concluding that there would be no interference with any of the one or more unintended receivers; and
preventing the transmission by the terminal in response to the local assessment of interference concluding that there would be interference with any of the one or more unintended receivers.

20. An apparatus, comp

Assignees

• Higher Ground Llc

Inventors

• Reis Robert S
• Russell Mark E
• Hansen Paul Christopher

Classifications

• H04W64/00

  Locating users or terminals {or network equipment} for network management purposes, e.g. mobility management · CPC title

• H04L67/12

  specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks · CPC title

• H04W16/24 Primary

  Cell structures · CPC title

• H04W16/14

  Spectrum sharing arrangements {between different networks} · CPC title

• H04W4/021

  Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences · CPC title