  We calculate the spectral index and tensor-to-scalar ratio for patch
inflation arisen from the Gauss-Bonnet braneworld scenario. The patch
cosmological models consist of Gauss-Bonnet (GB), Randall-Sundrum (RS), and 4D
general relativistic (GR) cases. In order to compare with the observation data,
we perform leading-order calculations for all patch models by choosing
large-field, small-field, and hybrid potentials. We show that the large-field
potentials are sensitive to a given patch model, while the small-field and
hybrid potentials are insensitive to a given patch model. It is easier to
discriminates between quadratic potential and quartic potential in the GB model
rather than RS and GR models. Irrespective of patch models, it turns out that
the small-field potentials are the promising models in view of the observation.
