text: how i can plan radio frequency in gsm networks , my mean is i need a documentation in rf planing?   did you try google? i dont know if these will help but here are some links i found that appear to be similar to what youre talking about.  http://wireless.kth.se/files/publication_files/wilsonjaldenpaper.pdf  http://www.widermind.com/pdf/gsmradionetwplanning.pdf  http://citeseer.ifi.unizh.ch/537368.html