Here, T_g‐minimised bandwidth‐allocated scheme is proposed for VPON supporting joint scheduling of multiple subsystems in metro‐access optical network. To minimise guard time (T_g) in WDM‐PON and TDM‐PON, the T_g‐transferred mechanism is introduced. To reduce the number of T_g in OFDM‐PON, the subcarrier allocation algorithm based on the minimum number of T_g is proposed. To effectively utilise the network bandwidth resources, the bandwidth allocation based on matrix model is established. To increase the utilisation of wavelength, a dynamic‐wavelength allocation mechanism is proposed. Finally, by the simulation, the effectiveness of T_g‐minimised bandwidth‐allocated scheme is demonstrated. Compared with other schemes, this scheme has at least 3% bandwidth utilisation improvement and lower average delay.