Moreover, based on the minimum bandwidth requirements of the real-time and non-real-time applications, a method that interacts with the polling mechanisms of BS was developed, aiming at guaranteeing the minimal bandwidth for those applications.
In addition, the scheduler must guarantee the requirements of limited maximum delay for the rtPS service and the minimal bandwidth for the rtPS and nrtPS services.
The scheduler ensures the minimal bandwidth for rtPS and nrtPS services in accordance with the minimum bandwidth requirement per connection, the amount of bytes received in a current period, and the amount of backlogged requests (in bytes).
The advantage of HARMONICA is that it offers the possibility to match the QoS needs and to guarantee a minimal bandwidth for best-effort traffic.
For example, satisfying four users instead of just three is a better resource allocation as per the first objective, whereas satisfying those four users with minimal bandwidth is the target of the second objective.
For fair comparison of the different sensing techniques, we consider their performances under different system parameter settings, respectively corresponding to the case when each of the sensing system is operating at its minimal bandwidth and to the case of packet duration T p fixed for all the schemes.
The minimal bandwidth is guaranteed through the control of the periodicity of unicast polling for the real-time and non-real-time applications.
A slot is the minimal bandwidth allocation unit, and consists of one subchannel and one to three symbols.
The practical implication is that the BitTorrent system makes it easy to distribute very large files to large numbers of people while placing minimal bandwidth requirements on the original "seeder". That is because everyone who wants the file is sharing with one another, rather than downloading from a central source.
Choosing the subcarriers to be orthogonal, and assuming perfect synchronisation, allows the block of symbols to be transmitted in parallel with minimal bandwidth usage and without interference.
