From Alcatel-Lucent techzine:
SHOULD I USE DEDICATED OR SHARED CARRIER?
While both dedicated and shared carrier solutions can be built, a selective dedicated carrier is always preferred over shared carrier for metro cell deployments, especially in outdoor environments where macro cell signal levels will be higher (Figure 6):
- With dedicated carrier, the MNO reserves a carrier for the exclusive use of metro cells in geographies that have been specifically targeted as needing extra capacity. In all other areas this same carrier may be used by macro cells. The use of a dedicated carrier avoids interference with the macro cell, which enables metro cells to cover wider areas and to absorb a larger amount of traffic off the macro network – greatly improving the TCO.
