4.11 Network Planning Aspects
Like in GSM and UMTS, meticulous network planning is essential to ensure a high performing network in as many places as possible and to reduce the effect of interference from neighboring cells and other mobile devices. The following sections describe some of the challenges faced and discuss potential solutions.
4.11.1 Single Frequency Network
Like UMTS, the LTE radio access network reuses a single carrier for all cells. To extend capacity, it is possible to operate several carriers in the same frequency band, although network operators usually take advantage from the up to 20-MHz channel bandwidth that has been specified for LTE. In some bands, 20-MHz channels might not be feasible, however, for a number of reasons: