Abstract: Requests of resources of uplink flows towards a base station (BS) and/or downlink flows towards end nodes are computed by each requesting node on an end-to-end basis. Each requesting node issues a cumulative request given by summing up the same request for each link separating the node from the BS plus each link separating the BS from the destination node, enabling the centralized node to perform connection based scheduling. The BS in response to all cumulative requests grants uplink and/or downlink resources for each link. The profile of grants is equal to the profile of requests when the amount of resources requested is below the maximum net throughput on MAC layer. When not below the maximum net through-put on MAC layer, the ideal profile of grants is normalized with respect to a ratio between the maximum net throughput on MAC layer and the amount of the overall requested resources.

Abstract: Requests of resources of uplink flows towards a base station (BS) and/or downlink flows towards end nodes are computed by each requesting node on an end-to-end basis. Each requesting node issues a cumulative request given by summing up the same request for each link separating the node from the BS plus each link separating the BS from the destination node, enabling the centralized node to perform connection based scheduling. The BS in response to all cumulative requests grants uplink and/or downlink resources for each link. The profile of grants is equal to the profile of requests when the amount of resources requested is below the maximum net throughput on MAC layer. When not below the maximum net through-put on MAC layer, the ideal profile of grants is normalized with respect to a ratio between the maximum net throughput on MAC layer and the amount of the overall requested resources.

Abstract: In an OFDM system with modulation and coding adaptation, the carriers are allotted a respective plurality of transmission modes characterised each by a specific combination of a modulation format and a coding scheme and consequently by a specific combination of values of bit rate and power. To allocate to each carrier, for a given OFDM symbol to be transmitted, an optimum value of bit rate and power resulting in the maximum bit rate for a given power or in a minimum power for a given bit rate, all carriers are initially allotted the mode characterised by the highest bit rate or power. If the constraints on the power (or respectively the bit rate) are not met, an iterative mode reduction is performed, the mode reduction at each iteration step being performed on the carrier for which said transition has a minimum cost.