. TRX 2 and TRX3 will never be co-channel. Figure 2.52 MAIO usage example Radio Network Optimisation Table 2.21 (a) Worst pairs of HSN; (b) best pairs of HSN Collision Collision Collision Collision site 1 site 2 probability site 1 site 2 probability site 1 site 2 probability site 1 site 2 probability 0.136116 0.135541 0.068144 0.073267 0.136223 0.135539 0.068163 0.053682 0.136225 0.135568 0.053418 0.079270 0.136258 0.135571 0.068105 0.053662 0.136251 0.135540 0.053477 0.073247 0.136259 0.135545 0.068105 0.053719 0.136245 0.135511 0.053503 0.079217 0.136244 0.135509 0.068100 0.053698 0.136241 0.135547 0.053524 0.073259 0.136186 0.135541 0.068108 0.053742 0.136186 0.135523 0.053448 0.079245 0.136131 0.135522 0.068171 0.053700 0.136124 0.135494 0.053483 0.073297 0.136166 0.135497 0.068154 0.053682 0.136161 0.135538 0.053529 0.079239 0.123013 0.135532 0.067975 0.053728 0.123019 0.122307 0.053697 0.072844 0.122944 0.122312 0.068100 0.053800 0.122947 0.122239 0.053682 0.079304 0.123086 0.122227 0.067949 0.053798 0.123094 0.122253 0.053719 0.072842 0.123037 0.122257 0.068053 0.053823 0.123025 0.122253 0.053698 0.079281 0.122925 0.122258 0.068200 0.053775 0.122925 0.120764 0.053733 0.072804 0.122900 0.120752 0.068093 0.053828 0.122900 0.120789 0.053694 0.079296 0.122956 0.120737 0.068060 0.053801 0.122957 0.120822 0.053676 0.072846 0.122931 0.120792 0.068082 0.053784 0.122926 0.120740 0.053759 0.079285 0.120776 0.053815 The MAList is systematically ordered in an ascending way at the BTS level, which is why the MAIO allows the management of orthogonality of a cell and not a specific frequency ordering by TRX. Depending on the chosen frequencies in MALists of the three sectors, an offset may be needed to avoid adjacent interference between cells of the same site. The example below is explicit for a 4 + 4 + 4 hopping TRX site. If the MAList configuration shown in Figure 2.53 is considered, it is assumed that assume HSN = 5, or HSN starts at the fifth position. A MAIO step of 2 at least is needed and the MAIO can be attribut