摘要
The combination of orthogonal frequency division multiple access(OFDMA) with relaying techniques provides plentiful opportunities for high-performance and cost-effective networks.It requires intelligent radio resource management schemes to harness these opportunities.This paper investigates the utility-based resource allocation problem in a real-time and non-real-time traffics mixed OFDMA cellular relay network to exploit the potentiality of relay.In order to apply utility theory to obtain an efficient tradeoff between throughput and fairness as well as satisfy the delay requirements of real-time traffics,a joint routing and scheduling scheme is proposed to resolve the resource allocation problem.Additionally,a low-complexity iterative algorithm is introduced to realize the scheme.The numerical results indicate that besides meeting the delay requirements of real-time traffic,the scheme can achieve the tradeoff between throughput and fairness effectively.
The combination of orthogonal frequency division multiple access （OFDMA） with relaying tech- niques provides plentiful opportunities for high-performance and cost-effective networks. It requires intelligent radio resource management schemes to harness these opportunities. This paper investigates the utility-based re- source allocation problem in a real-time and non-real-time traffics mixed OFDMA cellular relay network to ex- ploit the potentiality of relay. In order to apply utility theory to＇ obtain an efficient tradeoff between throughput and fairness as well as satisfy the delay requirements of real-time traffics, a joint muting and scheduling scheme is proposed to resolve the resource allocation problem. Additionally, a low-complexity iterative algorithm is in- troduced to realize the scheme. The numerical results indicate that besides meeting the delay requirements of re- al-time traffic, the scheme can achieve the tradeoff between throughout and fairness effectively.
基金
Sponsored by the Self-Determined Research Funds of Huazhong Normal University from the Colleges’Basic Research and Operation of MOE
