Communication using dynamic spectrum access based on channel selection

Patent metadata

Field	Value
Publication number	US-11632762-B2
Application number	US-202017037332-A
Country	US
Kind code	B2
Filing date	Sep 29, 2020
Priority date	May 15, 2020
Publication date	Apr 18, 2023
Grant date	Apr 18, 2023

Abstract

The disclosure described herein configures a client device for communication using dynamic spectrum access within a frequency spectrum, such as television white space (TVWS), using a determined location of the client device based on location information, such as from a global positioning system. A dynamic spectrum access database of channels is accessed based on the location information. Available channels are determined for the client device from the channels based on the location information. A list of the available channels for use by the client device are transmitted to the client device, thereby allowing narrowband communication over the channels.

First claim

What is claimed is:

1. A network system comprising:
a dynamic spectrum access database;
a gateway comprising a base station, the gateway configured to access the dynamic spectrum access database; and
a client device configured to communicate with the base station to communicate geo-location information of the client device to the base station,
wherein the gateway further:
determines a list of available dynamic spectrum access channels from the accessed dynamic spectrum access database based on the geo-location information of the client device, and
assigns a predefined channel hopping schedule across available channels from the list of the available channels based on a predicted future location of the client device, the predefined channel hopping schedule comprising a time slot structure including a plurality of time slots and a buffer slot,

wherein the client device is an Internet of Things (IoT) device,
wherein the determined list of available dynamic spectrum access channels is communicated to the client device by the base station,
wherein the dynamic spectrum access channels are narrowband channels, and
wherein the client device is configured to communicate using one or more channels selected from the determined list of available dynamic spectrum access channels according to the assigned channel hopping schedule.

2. The network system of claim 1 , wherein the gateway determines the list of available dynamic spectrum access channels by querying the dynamic spectrum access database with the geo-location information of the client device and receiving the list of available channels, based on the geo-location information of the client device, from the dynamic spectrum access database, and
the client device is located within a region and the list of available dynamic spectrum access channels communicated to the client device is less than all of available channels in the region.

3. The network system of claim 1 , wherein the base station divides a communication area into a grid having a plurality of regions and determines the list of available dynamic spectrum access channels in each region of the plurality of regions, and wherein the client device is configured to communicate using one or more channels selected from the list of available dynamic spectrum access channels based on the region in which the client device is located.

4. The network system of claim 3 , wherein the plurality of regions is defined such that at least one dynamic spectrum access channel is available in each region of the plurality of regions, and wherein a size of each region of the plurality of regions is determined based on an average number of client devices within one or more geographic areas within the plurality of regions.

5. The network system of claim 1 , wherein the list of available dynamic spectrum access channels comprises one or more active channels and one or more backup channels, wherein the one or more backup channels are configured to be used when the active channels have a reduced quality level.

6. The network system of claim 1 , wherein the gateway comprises an edge device configured to predict a future location of the client device in real-time and determine a corresponding updated list of available channels based on the predicted future location, wherein the geo-location information comprises global positioning system (GPS) location information, wherein base station is configured to transmit the updated list of available channels to the client device, the client device caching the updated list of available channels.

7. The network system of claim 1 , wherein the gateway comprises an edge device and is further configured to:
predict a future location of the client device,
wherein the plurality of time slots is a period of time for uplink and downlink transmissions to be performed on the available channels and the buffer slot is a reserved time slot available to adapt to a newly added client device.

8. The network system of claim 1 , wherein the client device is configured to assess a quality of one or more channels of a plurality of channels in a region, and hop across the plurality of channels when the quality of the one or more channels is assessed to be reduced.

9. The network system of claim 1 , wherein the gateway is configured to perform a bootstrapping process to configure a new client device by communicating in the buffer slot and using time-synchronization based on a GPS time of the base station and a GPS time of the new client device.

10. A computerized method for communication using dynamic spectrum access, the computerized method comprising:
determining a location of a client device using global positioning system (GPS) location information, wherein the client device is an Internet of Things (IoT) device;
querying a dynamic spectrum access database of dynamic spectrum access channels with the GPS location information of the client device;
determining a list of available channels for the client device from the dynamic spectrum access channels based on the GPS location information of the client device, wherein the available channels are narrowband channels;
assigning a predefined channel hopping schedule across available channels from the list of the available channels based on a predicted future location of the client device, the predefined channel hopping schedule comprising a time slot structure including a plurality of time slots and a buffer slot; and
transmitting the determined list of the available channels to the client device, wherein the client device is configured to communicate using one or more channels selected from the list of the available channels according to the assigned channel hopping schedule.

11. The computerized method of claim 10 , wherein the client device is located within a region and the list of the available channels communicated to the client device is less than all available channels in the region.

12. The computerized method of claim 11 , wherein the list of the available channels communicated to the client device that is less than all of the available channels in the region comprises not more than three channels.

13. The computerized method of claim 10 , wherein the list of the available channels comprises one or more active channels and one or more backup channels, wherein the one or more backup channels are configured to be used when the active channels have a reduced quality level.

14. The computerized method of claim 10 , further comprising predicting a future location of the client device and determining a corresponding updated list of available channels based on the predicted future location.

15. The computerized method of claim 14 , further comprising transmitting the updated list of available channels to the client device, the client device caching the updated list of available channels.

16. The computerized method of claim 10 , further comprising predicting a future location of the client device and assigning an increased channel hopping schedule across available channels from the list of the available channels based on the predicted future location.

17. The computerized method of claim 10 , wherein the client device is configured to assess a quality of one or more channels of a plurality of channels in a region, and hop across the plurality of channels when the quality of the one or more channels is assessed to be reduced.

18. The computerized method of claim 10 , further comprising performing a bootstrapping process to configure a new client device by communicating in a buffer slot and using time-synch

Assignees

• Microsoft Technology Licensing Llc

Inventors

• Chakraborty Tusher
• Vasisht Deepak
• Chandra Ranveer
• Kapetanovic Zerina
• Shi Heping
• Priyantha Nissanka Arachchige Bodhi

Classifications

• H04W88/16

  Gateway arrangements · CPC title

• G01S19/13

  Receivers · CPC title

• H04W4/70

  Services for machine-to-machine communication [M2M] or machine type communication [MTC] · CPC title

• H04W24/08

  Testing, {supervising or monitoring} using real traffic · CPC title

• H04W74/0808

  using carrier sensing, e.g. carrier sense multiple access [CSMA] · CPC title