Method of dynamic resource control and associated system
A method of dynamic resource allocation for at least one satellite access network associated with at least one telecommunications satellite comprises a frequency-flexible payload, the at least one satellite access network comprises a plurality of resource allocation controllers. The method comprises the acquisition of the bandwidth desired by each resource allocation controller, reconfiguration of the payload of the at least one satellite considering the bandwidth desired by each resource allocation controller and the frequency resources available on board each satellite, and a step of frequency allocation to the various resource allocation controllers, considering the bandwidth desired by each resource allocation controller and the frequency resources available on board each satellite.
1. A method of dynamic resource allocation for a group of at least one satellite access network associated with a group of at least one telecommunications satellite comprising a frequency-flexible payload, said at least one satellite access network comprising a plurality of resource allocation controllers, said method being implemented by a dynamic resource allocation device, and comprising:
a step of acquiring a signal representing the value of the bandwidth desired by each resource allocation controller of said at least one satellite access network,
a step of reconfiguring the payload of the group of at least one telecommunications satellite, considering the values of bandwidth desired by each resource allocation controller and the frequency resources available on board said at least one telecommunications satellite,
a step of frequency allocation to the various resource allocation controllers of the group of at least one satellite access network, considering the values of bandwidth desired by each resource allocation controller and the frequency resources available on board said at least one telecommunications satellite.
2. The method according to claim 1 , wherein:
if the sum of the values of bandwidth desired by each resource allocation controller is less than the available frequency resources of the satellite, a dynamic frequency allocation module allocates the desired value of bandwidth to each resource allocation controller, and
if the sum of the values of bandwidth desired by each resource allocation controller is greater than the available frequency resources of the satellite, a dynamic frequency allocation module allocates a predetermined value of bandwidth to each resource allocation controller.
3. The method according to claim 1 further comprising, for each resource allocation controller:
a step of acquiring a signal representing the data rate of the a resource allocation controller in question,
a step of calculating a rate of use of the allocated bandwidth and comparing this rate with a predetermined lower bound,
if the rate of use is less than said predetermined lower bound, a step of reducing the allocated value of bandwidth by allocating to said resource allocation controller in question, a value of bandwidth corresponding to a rate of use substantially equal to said lower bound.
4. The method according to claim 1 further comprising, for each resource allocation controller:
a step of acquiring a signal representing the data rate of the resource allocation controller in question,
if the data rate of said resource allocation controller is less than a predetermined nominal value while the value of bandwidth allocated to this controller is greater than said predetermined nominal value, a step of reducing the allocated value of bandwidth by allocating to said resource allocation controller a value of bandwidth substantially equal to said nominal value.
5. The method according to claim 1 further comprising a step of acquiring a signal representing a quality of service associated with the data to be transmitted by each resource allocation controller, and according to which the dynamic resource allocation device increases the priority of the value of bandwidth of the resource controllers having the highest priority, using said quality of service.
6. The method according to claim 1 , wherein at least one telecommunications satellite is of the multi-channel type and wherein the method further comprises a step of modifying the gain of at least one of the channels of at least one telecommunications satellite.
7. A system of dynamic resource allocation configured for executing the method according to claim 1 , comprising a dynamic resource allocation device, a group of at least one satellite access network, and at least one communications satellite comprising a frequency-flexible payload,
said group of at least one satellite access network comprising a plurality of resource allocation controllers, each resource allocation controller being configured to transmit data to at least one modem, each resource allocation controller being connected to the dynamic resource allocation device, and each resource allocation controller being configured to deliver a signal representing the desired value of bandwidth and to transmit this signal to the dynamic resource allocation device,
said dynamic resource allocation device comprising at least one calculation module configured to implement the method according to claim 1 and at least one module configured to allocate a value of bandwidth to the various resource allocation controllers of the group of at least one satellite access network and to reconfigure the payload of the at least one telecommunications satellite.