Claims
- 1. A method for estimating the interference level in a cellular radio system comprising:in each cell at least one base station, and a number of subscriber terminals communicating with one or several base stations, the terminals measure power levels from those frequencies which are on a list that is maintained by the terminals and comprise those base stations and frequencies which allow a handover to be performed by the terminal, wherein when the list maintained by the terminals are updated for the frequencies measured for power level information, a location of each terminal in the cell is taken into account, and wherein the list further comprising frequencies whose power level information is used for frequency planning of the system.
- 2. A method as claimed in claim 1, wherein for the frequencies measured for the power level information, the list maintained by the terminals are updated dynamically in connection with telephone calls.
- 3. A method as claimed in claim 1, wherein for the frequencies measured for the power level information, the list maintained by the terminals are updated at regular intervals.
- 4. A method as claimed in claim 1, wherein the number of the frequencies measured for the power level information varies as a function of time.
- 5. A method as claimed in claim 1, wherein the frequencies measured for the power level information vary in the different terminals within the same cell.
- 6. A method as claimed in claim 1, wherein the list comprises frequencies used in a neighbouring cell of the terminal.
- 7. A method as claimed in claim 1, wherein the list comprises broadcast channel frequencies of those base stations to which the terminals can perform a handover.
- 8. A method as claimed in claim 1, wherein the desired frequencies are measured both before and after a new base station using frequencies chosen on the basis of the measurements is put to use.
- 9. A method as claimed in claim 8, wherein the new base station is first put to use at a particular test frequency.
- 10. A method as claimed in claim 9, wherein the final frequencies to be used at the new base station are chosen on the basis of the measurements performed at the test frequency.
- 11. A method as claimed in claim 9, wherein measurements are performed both within the new base station and the neighboring cells of the new base station.
- 12. A method as claimed in claim 8, wherein measurements are performed both within the new base station and the neighbouring cells of the new base station.
Priority Claims (1)
Number |
Date |
Country |
Kind |
970754 |
Feb 1997 |
FI |
|
Parent Case Info
This application is a 371 of PCT/FR 98/00156, filed on Feb. 20, 1998.
PCT Information
Filing Document |
Filing Date |
Country |
Kind |
PCT/FI98/00156 |
|
WO |
00 |
Publishing Document |
Publishing Date |
Country |
Kind |
WO98/37646 |
8/27/1998 |
WO |
A |
US Referenced Citations (12)
Non-Patent Literature Citations (1)
Entry |
Copy of International Search Report for PCT/FI98/00156. |