Abstract
Traditional resource allocation algorithms use the hierarchical system, which does not apply to the bad channel environment in broadband power line communication system. Introducing the idea of cross-layer can improve the utilization of resources and ensure the QoS of services. This paper proposes a cross-layer resource allocation on broadband power line based on QoS priority scheduling function on MAC layer. Firstly, the algorithm considers both of real-time users’ requirements for delay and non-real-time users’ requirements for queue length. And then user priority function is proposed. Then each user’s scheduled packets number is calculated according to its priority function. The scheduling sequences are based on the utility function. In physical layer, according to the scheduled packets, the algorithm allocates physical resources for packets. The simulation results show that the proposed algorithm give consideration to both latency and throughput of the system with improving users’ QoS.
Highlights
With the construction of strong and smart grid and the rapid development of communication technology, broadband power line communications gradually develop into the high-speed
Traditional resource allocation algorithms use the hierarchical system, which does not apply to the bad channel environment in broadband power line communication system
This paper proposes a cross-layer resource allocation on broadband power line based on QoS priority scheduling function on MAC layer
Summary
With the construction of strong and smart grid and the rapid development of communication technology, broadband power line communications gradually develop into the high-speed. The algorithm optimally defines the various satisfactory degree evaluation functions Based on such functions, the algorithm calculates scheduling utility function, achieving user’s scheduling. In this algorithm, the differentiation between emergency services and non-emergency services is not obvious, which may lead to packet loss of real-time business. The algorithm defines satisfactory factor of quality of service, and gets the new utility function through improving the traditional index scheduling algorithm (EXP). This paper introduces a cross-layer resource allocation algorithm on broadband power line based on a novel scheduling function in MAC layer. The algorithm closely contacts the MAC layer with the physical layer, and processes packet scheduling and resource allocation reasonably, which improves the throughput of the system
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