The actual frequency planning of certain areas is usually conducted with such areas divided into segments geographically, i.e., first divide a complex network into small networks. However, there should be some frequency carriers (when the frequency is enough) reserved at the boundary of the segments or the frequency carriers should be divided. Such boundary should … Read more
Isolated reuse technology refers to 1*3 or 1*1 reuse with short reuse distance and severe interferences, radio frequency hopping technology has to be adopted. The aggregate of hopping frequencies needs to be far more larger than the number of TRX (more than twice), MA, HSN and MAIO parameter are used to avoid frequency conflict. Let’s … Read more
Capacity increase when reuse density is multiplied: Supposing there are 300 cells Bandwidth: 8 MHz (40 frequency) Normal 4*3 reuse: reuse density=12 Network capacity = 40/12 * 300 = 1000 TRX Multiple reuse: “0” BCCH layer: re-use =14, (14 frq.) “+” Normal TCH layer: re-use =10, (20 frq.) ” ^-“ Aggressive TCH layer: re-use = … Read more
Multi-layer reuse pattern technology means to divide the whole frequency resources into different subgroups according to specific principles. Each subgroup allocates frequency carriers to every cell by means of different reuse models, so the reuse density of each frequency carrier as well as the interference will be different in each cell. The frequency carrier with … Read more
The basic frequency reuse mode of GSM is 4*3 frequency reuse. It is the basic of other frequency reuse modes, we also call it regular frequency reuse model. “4” represents 4 sites, “3” represents 3 cells in each site. Totally 12 cells become a basic frequency reuse cluster. Different cells in the same cluster have … Read more
Frequency Planning is possible by manually or automatic.At initial stage of new RF Network automatic frequency planned and then after for optimization based on KPI manual frequency planing done. Manual Frequency Planing Steps The steps to be followed in manual frequency planning are: Calculating the frequency reuse distance theoretically. Determining the cell repeat pattern Planning … Read more