Wedge shaped cells in a wireless communication system
Aspects described herein relate to a network for providing air-to-ground wireless communication in various cells. The network includes a first base station array, each base station of which includes a respective first antenna array defining a directional radiation pattern that is oriented in a first direction, wherein each base station of the first base station array is disposed spaced apart from another base station of the first base station array along the first direction by a first distance. The network also includes a similar second base station array where the second base station array extends substantially parallel to the first base station array and is spaced apart from the first base station array by a second distance to form continuous and at least partially overlapping cell coverage areas between respective base stations of the first and second base station arrays.
1. A base station in a network for providing air-to-ground (ATG) wireless communication in various cells, comprising:
a plurality of antennas associated with respective sectors; and
processing circuitry configured to control operation of the antennas,
wherein the antennas define a first directional radiation pattern extending away from the antennas and increasing in vertical beam width as distance increases in each of the respective sectors, the first directional radiation pattern concentrating signals transmitted toward the horizon;
wherein the first directional radiation pattern overlaps with at least one second directional radiation pattern of an adjacent base station to define a coverage area for aircraft in the first or second directional radiation patterns up to a predetermined altitude,
wherein the base station is configured to wirelessly communicate with a radio disposed on an aircraft flying through one of the respective sectors while the aircraft is located inside the first directional radiation pattern, and coordinate with the adjacent base station to enable the adjacent base station to communicate with the radio while the aircraft is located inside the at least one second directional radiation pattern of the adjacent base station.
2. The base station of claim 1 , wherein at least one of the first directional radiation pattern or the second direction radiation pattern defines a substantially wedge shaped radiation pattern.
3. The base station of claim 2 , wherein the first and second directional radiation patterns overlap each other to provide continuous coverage up to the predetermined altitude.
4. The base station of claim 3 , wherein coverage up to the predetermined altitude immediately above the base station is provided by the adjacent base station.
5. The base station of claim 1 , wherein, for any given one of the respective sectors, only the first directional radiation pattern is transmitted from the antennas.
6. The base station of claim 1 , wherein the respective sectors of the base station combine to form a semicircular radiation pattern.
7. The base station of claim 6 , wherein the base station comprises a single radio operated under control of the processing circuitry, the single radio controlling operation of each of the respective sectors.
8. The base station of claim 1 , wherein the base station employs unlicensed spectrum and the adjacent base station employs unlicensed spectrum.
9. The base station of claim 1 , wherein the base station comprises a switch configured to alternate between transmitting signals via selected ones of the antennas.
10. The base station of claim 1 , wherein the base station employs unlicensed spectrum, and wherein the aircraft transitions from the first directional radiation pattern being served by the base station via the unlicensed spectrum to being served via another base station that employs licensed spectrum.
11. A network for providing air-to-ground (ATG) wireless communication in various cells, the network comprising:
a first base station having a plurality of antennas associated with respective sectors, and processing circuitry configured to control operation of the antennas, the antennas of the first base station defining a first directional radiation pattern extending away from the antennas and increasing in vertical beam width as distance increases in each of the respective sectors, the first directional radiation pattern concentrating signals transmitted toward the horizon; and
a second base station defining a second directional radiation pattern,
wherein the first directional radiation pattern overlaps with the second directional radiation pattern,
wherein the first base station is configured to wirelessly communicate with a radio disposed on an aircraft flying through one of the respective sectors, and
wherein the first base station is configured to coordinate with the second base station to enable the second base station to communicate with the radio while the aircraft is located inside the second directional radiation pattern of the second base station.
12. The network of claim 11 , wherein at least one of the first directional radiation pattern or the second direction radiation pattern defines a substantially wedge shaped radiation pattern.
13. The network of claim 12 , wherein the first and second directional radiation patterns overlap each other to provide continuous coverage up to a predetermined altitude.
14. The network of claim 13 , wherein coverage up to the predetermined altitude immediately above the first base station is provided by the second base station.
15. The network of claim 11 , wherein, for any given one of the respective sectors, only the first directional radiation pattern is transmitted from the antennas.
16. The network of claim 11 , wherein the respective sectors of the first base station combine to form a semicircular radiation pattern.
17. The network of claim 16 , wherein the first base station comprises a single radio operated under control of the processing circuitry, the single radio controlling operation of each of the respective sectors.
18. The network of claim 11 , wherein the first base station employs unlicensed spectrum and the second base station employs licensed spectrum.
19. The network of claim 11 , wherein the first base station comprises a switch configured to alternate between transmitting signals via selected ones of the antennas.
20. The network of claim 11 , wherein the first base station employs unlicensed spectrum and the second base station employs unlicensed spectrum.