1. A radio base station that forms a first cell in a radio communication system in which the first cell that uses a first carrier and a second cell that uses a second carrier of a higher frequency band than the first carrier are arranged to overlap each other, the radio base station comprising:
a determining section that determines an offset value to use in cell selection in a user terminal, based on transmission property information of the second carrier in the second cell; and
a reporting section that reports the offset value to the user terminal.
2. The radio base station according to claim 1, wherein the transmission property information includes at least one of the number of transmitting antenna elements provided in a radio base station forming the second cell, a transmission bandwidth used in the radio base station forming the second cells, and beamforming gain of a transmission beam used in the radio base station forming the second cell.
3. The radio base station according to claim 1, wherein the determining section determines the offset value based on interference information from a neighboring cell of the second cell.
4. A user terminal used in a radio communication system in which a first cell that uses a first carrier and a second cell that use a second carrier of a higher frequency band than the first carrier are arranged to overlap each other, the user terminal comprising:
a measurement section that measures received quality of a reference signal from a first radio base station forming the first cell and a second radio base station forming the second cell;
a receiving section that receives an offset value that is reported from the first radio base station; and
a cell selection section that carries out cell selection based on the received quality measured in the measurement section and the offset value received in the receiving section,
wherein the offset value is determined based on transmission property information of the second carrier in the second cell.
5. The user terminal according to claim 4, wherein the transmission property information includes at least one of the number of transmitting antenna elements provided in the second radio base station, a transmission bandwidth used in the second radio base station, and beamforming gain of a transmission beam used in the second radio base station.
6. The user terminal according to claim 4, wherein the cell selection section applies the offset value to the received quality of a reference signal from the second radio base station.
7. The user terminal according to claim 6, wherein, when a best received quality to which the offset value is applied fulfills a predetermined threshold, the cell selection section selects a second cell based on a comparison result of the received quality of a reference signal from the second radio base station.
8. The user terminal according to claim 6, wherein, when the best received quality to which the offset value is applied does not fulfill a predetermined threshold, the cell selection section selects a first cell or a second cell based on a comparison result of the received quality of a reference signal from the second radio base stations and the received quality of a reference signal from the first radio base station.
9. A cell selection method in a radio communication system in which a first cell that uses a first carrier and second cells that use a second carrier of a higher frequency band than the first carrier are arranged to overlap each other, the cell selection method comprising the steps of:
in a first radio base station forming the first cell:
determining an offset value to use in cell selection in a user terminal, based on transmission property information of the second carrier in the second cell; and
reporting the offset value to the user terminal; and
in the user terminal:
measuring received quality of reference signals from the first radio base station and a second radio base station forming the second cell;
receiving an offset value that is reported from the first radio base station; and
carrying out the cell selection based on the received quality that is measured and the offset value that is received.
10. A radio communication system in which a first cell that uses a first carrier and a second cell that uses a second carrier of a higher frequency band than the first carrier are arranged to overlap each other, wherein:
a first radio base station forming the first cell comprises:
a determining section that determines an offset value to use in cell selection in a user terminal, based on transmission property information of the second carrier in the second cell; and
a reporting section that reports the offset value to the user terminal; and
the user terminal comprises:
a measurement section that measures received quality of reference signals from the first radio base station and a second radio base station forming the second cell;
a receiving section that receives the offset value that is reported from the first radio base station; and
a cell selection section that carries out cell selection based on the received quality that is measured and the offset value that is received.
11. The user terminal according to claim 5, wherein the cell selection section applies the offset value to the received quality of a reference signal from the second radio base station.
12. The radio base station according to claim 2, wherein the determining section determines the offset value based on interference information from a neighboring cell of the second cell.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method for facilitating a landing of an aircraft, the method comprising:
receiving flight data in the aircraft;
receiving geographic data in the aircraft; and
generating route data based on the flight data and the geographic data, wherein the route data provides information about attainable landing areas for the aircraft, wherein the attainable landing areas comprise one or more off-airport landing areas, wherein the flight data comprises aircraft-performance data, and wherein the aircraft-performance data comprises one or more of runway surface and length requirements, and type of runway surfaces required.
2. The method of claim 1 wherein the flight data comprises one or more flight parameters.
3. The method of claim 2 wherein the one or more flight parameters comprise one or more of a route and pilot preferences.
4. The method of claim 1 wherein the aircraft-performance data comprises one or more of climb performance, cruise performance, descent performance, weight and balance data, and fuel capacity and burn rates.
5. The method of claim 1 wherein the geographic data is provided by one or more of a terrain database, a roads database, an airport database, a populated areas database, an airspace database, an obstructions database, a weather data database, a utilities database, and a vegetation database.
6. The method of claim 1 wherein the route data is further based on navigation data.
7. The method of claim 6 wherein the navigation data comprises one or more of inertial navigation system data, attitude and heading reference system data, and global positioning system data.
8. The method of claim 1 wherein the route data is further based on aircraft system data.
9. The method of claim 8 wherein the aircraft system data comprises one or more of aircraft configuration information, current weight and balance, fuel burn rate and quantity, and engine parameters.
10. The method of claim 1 wherein the route data further comprises glide limits.
11. The method of claim 10 wherein the glide limits are based on one or more of a real-time position of the aircraft and real-time conditions surrounding the aircraft.
12. The method of claim 1 wherein the route data further comprises a velocity vector, wherein the velocity vector is based on one or more of a current aircraft attitude, position, ground speed, and heading.
13. The method of claim 1 wherein the route data further comprises a vertical vector, wherein the vertical vector is based on one or more of a current aircraft attitude, position, ground speed, altitude, and vertical speed.
14. A computer-readable medium containing program instructions for facilitating a landing of an aircraft, which when executed by a computer system cause the computer system to execute a method comprising:
receiving flight data in the aircraft;
receiving geographic data in the aircraft; and
generating route data based on the flight data and the geographic data, wherein the route data provides information about attainable landing areas for the aircraft, wherein the attainable landing areas comprise one or more off-airport landing areas, wherein the flight data comprises aircraft-performance data, and wherein the aircraft-performance data comprises one or more of runway surface and length requirements, and type of runway surfaces required.
15. The computer-readable medium of claim 14 wherein the flight data comprises one or more flight parameters.
16. The computer-readable medium of claim 15 wherein the one or more flight parameters comprise one or more of a route and pilot preferences.
17. The computer-readable medium of claim 14 wherein the aircraft-performance data comprises one or more of climb performance, cruise performance, descent performance, weight and balance data, and fuel capacity and burn rates.
18. The computer-readable medium of claim 14 wherein the geographic data is provided by one or more of a terrain database, a roads database, an airport database, a populated areas database, an airspace database, an obstructions database, a weather data database, a utilities database, and a vegetation database.
19. The computer-readable medium of claim 14 wherein the route data is further based on navigation data.
20. The computer-readable medium of claim 19 wherein the navigation data comprises one or more of inertial navigation system data, attitude and heading reference system data, and global positioning system data.
21. The computer-readable medium of claim 14 wherein the route data is further based on aircraft system data.
22. The computer-readable medium of claim 21 wherein the aircraft system data comprises one or more of aircraft configuration information, current weight and balance, fuel burn rate and quantity, and engine parameters.
23. The computer-readable medium of claim 14 wherein the route data further comprises glide limits.
24. The computer-readable medium of claim 14 wherein the glide limits are based on one or more of a real-time position of the aircraft and real-time conditions surrounding the aircraft.
25. The computer-readable medium of claim 24 wherein the route data further comprises a velocity vector, wherein the velocity vector is based on one or more of a current aircraft attitude, position, ground speed, and heading.
26. The computer-readable medium of claim 14 wherein the route data further comprises a vertical vector, wherein the vertical vector is based on one or more of a current aircraft attitude, position, ground speed, altitude, and vertical speed.
27. An airplane comprising:
a plurality of aircraft systems; and
a flight planning system coupled to the plurality of aircraft systems, wherein the flight planning system is operable to receive flight data in the airplane, receive geographic data in the airplane, and generate route data based on the flight data and the geographic data, wherein the route data provides information about attainable landing areas for the airplane, wherein the attainable landing areas comprise one or more off-airport landing areas, wherein the flight data comprises aircraft-performance data, and wherein the aircraft-performance data comprises one or more of runway surface and length requirements, and type of runway surfaces required.
28. The airplane of claim 27 wherein the flight data comprises one or more flight parameters.
29. The airplane of claim 28 wherein the one or more flight parameters comprise one or more of a route and pilot preferences.
30. The airplane of claim 27 wherein the aircraft-performance data comprises one or more of climb performance, cruise performance, descent performance, weight and balance data, and fuel capacity and burn rates.
31. The airplane of claim 27 wherein the geographic data is provided by one or more of a terrain database, a roads database, an airport database, a populated areas database, an airspace database, an obstructions database, a weather data database, a utilities database, and a vegetation database.
32. The airplane of claim 27 wherein the route data is further based on navigation data.
33. The airplane of claim 32 wherein the navigation data comprises one or more of inertial navigation system data, attitude and heading reference system data, and global positioning system data.
34. The airplane of claim 27 wherein the route data is further based on aircraft system data.
35. The airplane of claim 34 wherein the aircraft system data comprises one or more of aircraft configuration information, current weight and balance, fuel burn rate and quantity, and engine parameters.
36. The airplane of claim 27 wherein the route data further comprises glide limits.
37. The airplane of claim 36 wherein the glide limits are based on one or more of a real-time position of the aircraft and real-time conditions surrounding the aircraft.
38. The airplane of claim 27 wherein the route data further comprises a velocity vector, wherein the velocity vector is based on one or more of a current aircraft attitude, position, ground speed, and heading.
39. The airplane of claim 27 wherein the route data further comprises a vertical vector, wherein the vertical vector is based on one or more of a current aircraft attitude, position, ground speed, altitude, and vertical speed.
40. A method for facilitating a landing of an aircraft, the method comprising:
receiving flight data in the aircraft;
receiving geographic data in the aircraft; and
generating route data based on the flight data and the geographic data, wherein the route data provides information about attainable landing areas for the aircraft, and wherein the attainable landing areas comprise one or more off-airport landing areas, wherein the flight data comprises aircraft-performance data, wherein the aircraft-performance data comprises one or more of climb performance, cruise performance, descent performance, weight and balance data, fuel capacity and burn rates, runway surface and length requirements, and type of runway surfaces required, and wherein the geographic data is provided by one or more of a terrain database, a roads database, an airport database, a populated areas database, an airspace database, an obstructions database, a weather data database, a utilities database, and a vegetation database.