| 摘要 |
<p>The user or algorithm extracts from a first section certain cells so as to examine if their incorporation in a second section would lead to a chain of cells (1-4) with reduced interference, thus improving the frequency allocation plan. Method for determining a frequency allocation plan for a number of cellular base stations (11-14) with communication management cells (1-4). An algorithm is executed by a processor incorporating a number radio communication carrier frequencies (fi,fj): (a) choose a previously determined cell (1); estimate, in the considered cell, the interference level to various frequencies emanating from the other cells (12-14) within radio contact; link the considered cell to a frequency (fk) associated with minimum interference, and; choose another cell (2-4) from the remainder and progressively form a chain of cells within radio contact to each other for the each of the two preceding stages; the user of a fixed system prescribes a mutual interference level (Sh) between cells; the system compares the estimated interference to the level (Sh); the system defines a remaining cell by eliminating from the other cells to be processed , cells (3-4) associated with an interference level inferior to the level (Sh); when the remaining cell (2) has been defined thus forming a first section of a frequency cell chain, the algorithm forms a second chain for frequencies allocated to cells to be processed (3-4) by searching for other frequency allocations by reiteration of states 6 and 7; the algorithm processes the first section by a series of truncated cycles, only taking into account, for each processed cell (1) a limited number of cells (2) with interference exceeding the level (Sh) remaining to be processed, and processes the second section using a series of exhaustive examination cycles , for each of the remaining cells (3-4) to process.</p> |
