Systems and methods for controlling base station sectors to reduce potential interference with low elevation satellites
View Patent ↗Interference between satellite radioterminal communications systems may be reduced by transmitting and receiving satellite uplink frequencies in a Time Division Duplex (TDD) mode by a wireless base station in a first sector thereof, while simultaneously refraining from transmitting and receiving satellite uplink frequencies in the TDD mode by the wireless base station in a second sector thereof that points to a low elevation angle satellite. Satellite uplink frequencies may be transmitted and received in the TDD mode by a satellite that communicates with radioterminals in the second sector.
1. A method of reducing interference between satellite radioterminal communications systems comprising:
transmitting and receiving satellite uplink frequencies in a Time Division Duplex (TDD) mode by a wireless base station in a first sector thereof while simultaneously retraining from transmitting and receiving satellite uplink frequencies in the TDD mode by the wireless base station in a second sector thereof that points to a low elevation angle satellite.
2. A method according to claim 1 further comprising transmitting and receiving satellite uplink frequencies in the TDD mode by a satellite that communicates with radioterminals in the second sector.
3. A method according to claim 1 further comprising refraining from transmitting and receiving satellite uplink frequencies in the TDD mode and in a non-TDD mode by the wireless base station in the second sector thereof.
4. A method according to claim 1 further comprising transmitting satellite downlink frequencies in a non-TDD mode by the wireless base station in the second sector thereof.
5. A method according to claim 1 further comprising transmitting and receiving satellite downlink frequencies in the TDD mode by the wireless base station in the second sector thereof.
6. A method according to claim 1 wherein simultaneously refraining from transmitting and receiving comprises simultaneously refraining from transmitting and receiving satellite uplink frequencies in the TDD mode by the wireless base station in a second sector thereof that points to a low elevation angle satellite and has a direct line-of sight path to the low elevation satellite.
7. A method according to claim 1 wherein simultaneously refraining from transmitting and receiving comprises simultaneously refraining from transmitting and receiving satellite uplink frequencies in the TDD mode by the wireless base station in a second sector thereof that points to a low elevation angle satellite and is located near a coastline.
8. A system for reducing interference between satellite radioterminal communications systems comprising:
a wireless base station that is configured to transmit and receive satellite uplink frequencies in a Time Division Duplex (TDD) mode in a first sector thereof while simultaneously refraining from transmitting and receiving satellite uplink frequencies in the TDD mode in a second sector thereof that points to a low elevation angle satellite.
9. A system according to claim 8 further comprising a satellite that is configured to transmit and receive satellite uplink frequencies in the TDD mode to communicate with radioterminals in the second sector.
10. A system according to claim 8 wherein the wireless base station is further configured to refrain from transmitting and receiving satellite uplink frequencies in the TDD mode and in a non-TDD mode in the second sector thereof.
11. A system according to claim 8 wherein the wireless base station is further configured to refrain from transmitting satellite downlink frequencies in a non-TDD mode in the second sector thereof.
12. A system according to claim 8 wherein the wireless base station is further configured to transmit and receive satellite downlink frequencies in the TDD mode in the second sector thereof.
13. A system according to claim 8 wherein the wireless base station is configured to simultaneously refrain from transmitting and receiving by simultaneously refraining from transmitting and receiving satellite uplink frequencies in the TDD mode in a second sector thereof that points to a low elevation angle satellite and has a direct line-of sight path to the low elevation satellite.
14. A system according to claim 8 wherein the wireless base station is configured to simultaneously refrain from transmitting and receiving by simultaneously refraining from transmitting and receiving satellite uplink frequencies in the TDD mode in a second sector thereof that points to a low elevation angle satellite and is located near a coastline.