Joint power and bandwidth allocation for beam-hopping user downlinks in smart gateway multibeam satellite systems

Abstract

To improve the efficiency of on-board resources utilization, two joint power and bandwidth allocation schemes are proposed to optimize power and timeslot allocation for beam-hopping user downlinks of the smart gateway system. By decomposing the two-variable optimization problem into two single variable optimization problems, the joint optimization problem is solved effectively. Moreover, two novel algorithms are proposed to solve the two subproblems. Extensive simulation results demonstrate that the efficiency of resource utilization can be effectively improved with the joint power and bandwidth allocation schemes in contrast with conventional allocation scheme.

A Bandwidth Statistical Multiplexing and Control Method for Satellite Broadcasting

“…Our future work will include analyzing the characteristics of all broadcast data, considering uplink and downlink quality monitoring [4], and adding adaptive adjustment function for transmission power by the aid of knapsack allocation problem [8], for the purpose of realizing the optimal allocation of broadcast resources.…”

“…Shi et al proposed two joint power and bandwidth allocation schemes [8] based on the intercluster orthogonal frequency reuse, which considers channel conditions and the traffic demands of user beams. It gives a good compromise between efficiency of frequency bands utilization and cochannel interference mitigation.…”

Deep reinforcement learning‐based beam Hopping algorithm in multibeam satellite systems

“…In this context, the BH technique emerged, where the multibeam satellite dynamically illuminates the cells with a small number of active beams. Many scholars have conducted the BH in satellite systems [12][13][14][15][16][17][18][19][20][21][22][23]. Angeletti et al [12] assessed the advantages in terms of system performance brought by the utilisation of BH technique and proposed GA based BH illumination plan (BHIP) optimisation.…”

“…Different from works in [12][13][14][15][16][17] where the focus is on the capacity optimisation, Han et al [18] considered the delay fairness for the QoS equilibrium in BH satellites. To further improve the efficiency of on-board resource utilisation, joint BH and FRA [19], joint BH and precoding [20] schemes are proposed to improve the system performance.…”

An Enhanced Bandwidth Optimization in Un-reliable Network using Efficient Bandwidth Utilization based Scheduling Algorithm

“…Kim et al [11] expressed a dynamic bandwidth investigation technique that produced real-world dynamic bandwidth durations utilized closed loop traffic signal data. Shi et al [12] explained the effectiveness of onboard resource usage in beam-hopping client downlinks; designed two joint power and timeslot allocation methods for smart gateway systems. Fan et al [13] investigated the joint transmit power and bandwidth allocation problem for a cognitive radio framework in underlay mode.…”