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The Research of Multi-user Scheduling of RRM for LTE

Author: GuXiaoPing
Tutor: ZhangLiYun
School: Nanjing University of Posts and Telecommunications
Course: Electronics and Communication Engineering
Keywords: LTE Multi-user scheduling The M-LWDF algorithm QoS
CLC: TN929.5
Type: Master's thesis
Year: 2012
Downloads: 60
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Abstract


LTE's full name is The UMTS Long Term Evolution, that the long-term evolution of the third generation mobile communication standard UMTS , 3GPP started in recent years , the biggest new technology research and development projects . This paper focuses on the LTE downlink OFDMA - based multi-user system scheduling policy . Radio resource management in multi-user scheduling is an important part of achieving high system throughput and fast data transmission LTE , its main tasks include rational allocation of radio resources for each user in a variety of business , to ensure user fairness premise , to maximize the throughput of the system , in order to achieve efficient use of resources . Firstly analyze existing classical scheduling algorithm in the LTE system , discusses the advantages and disadvantages of the classical algorithm , applicable business and a scene , especially for the application of real-time services scheduling algorithm M-LWDF algorithm performance depth study , in the simulation put forward on the basis of practice - AM-LWDF, this improved algorithm and the improved algorithm is more sensitive to delay , to ensure system throughput , maximize fairness between users as well as to reduce the packet loss rate . In this paper, a system-level simulation , combined with the results of the experimental data to verify the the AM-LWDF algorithm significantly improve the fairness performance , packet loss rate is significantly lower , adjustable range of the key factors , packet loss rate declined by about 3% to 8 %. System average throughput decreased slightly , the decline is also expected range , basically reached an effective compromise of user fairness and spectrum efficiency .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Wireless communications > Mobile Communications
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