摘要
In the Long Term Evolution(LTE)downlink multicast scheduling,Base Station(BS)usually allocates transmit power equally among all Resource Blocks(RBs),it may cause the waste of transmit power.To avoid it,this paper put forward a new algorithm for LTE multicast downlink scheduling called the Energy-saving based Inter-group Proportional Fair(EIPF).The basic idea of EIPF is to calculate an appropriate transmitting power for each group according to its data rate respectively,and then follow the inter-group proportional fair principle to allocate RBs among multicast groups.The results of EIPF simulation show that the proposed algorithm not only can reduce the transmit power of BS effectively but also improve the utilization rate of energy.
In the Long Term Evolution （LTE） downlink multicast scheduling, Base Station （BS） usually allocates transmit power equally among all Resource Blocks （RBs）, it may cause the waste of transmit power. To avoid it, this paper put forward a new algorithm for LTE multicast downlink scheduling called the Energy-saving based Inter-group Proportional Fair （EIPF）. The basic idea of EIPF is to calculate an appropriate transmitting power for each group according to its data rate respectively, and then follow the inter-group proportional fair principle to allocate RBs among multicast groups. The results of EIPF simulation show that the proposed algorithm not only can reduce the transmit power of BS effectively but also improve the utilization rate of energy.
基金
Supported by the National Science and Technology Major Projects(2011ZX03005-004-03)
Jiangsu University Natural Science Basic Research Project(10KJA510037)
Nanjing University of Posts and Telecommunications (NJUPT)Introduction of Talent Project(NY209002)
NJUPT Broadband Wireless Communication and Sensor Network Technology Key Laboratory of the Ministry of Education Research Fund Project(NYKL201108)
Jiangsu Provincial Science and Technology Support Program of Industrial Projects(No.BE2013019)
Jiangsu Construction Engineering College Dominant Disciplines Funded Projects(Information and Communication Engineering)
