移动CDN网络架构和资源调度方法研究

doi:10.3969/j.issn.1000-436x.2014.z2.017

Abstract

Abstract:

Aimed at network architecture of mobile core network,the deployment method of MCDN service nodes was discussed on the basis of virtualized core net resources and proposes a MCDN network architecture based on the core net resource pool.Then,according to collaborative problem of MCDN resources,a MCDN resource scheduling algorithm based on regional resource co-allocation was proposed,establish a mathematical model of goal programming based on multi-factor resource co-allocation was extablished.Finally,a case study is conducted to demonstrate the feasibility and effectiveness of the proposed approach.

Key words: mobile core network, cloud computing, content distribution network

Su-fen LI,Yun-yong ZHANG,Bing-yi FANG,Lei XU,Wei XIONG,Jun WU. Research on the mobile CDN architecture and the resource scheduling method[J]. Journal on Communications, 2014, 35(Z2): 124-130.

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References 16

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符号	意义及说明
i,j	区域内每个MCDN服务节点的的ID,i,j=1,2,3,…I，I是正整数
Si	MCDN网络中ID为i的服务节点
n	区域内MCDN服务节点上的内容对象编号，n=1,2,3,…,N,N是正整数，表示区域内共可提供N种不同的内容服务
M	单位时间内，用户对区域内MCDN内容资源的请求数量，每个用户请求分别记为Rm,m=1,2,3,…,M
D_i,j,D₀	网络距离，指获取用户请求的MCDN服务节点Sj与目标MCDN服务节点Si之间的网络距离，D_i,j表示实际数值，D₀表示设定的期望值
T_i，T₀	响应时间，指MCDN服务节点Si在一段时间内，对用户请求的平均相应时间，T_i表示实际数值，T₀表示设定的期望值
N_i，N₀	当前连接数，指MCDN服务节点Si当前的整体业务连接数，N_i表示实际数值，N₀表示设定的期望值
F_i，F₀	当前网络流量，指MCDN服务节点Si当前的整体网络流量，F_i表示实际数值，F₀表示设定的期望值
MP_i，MP₀	内存利用率，指MCDN服务节点当前的整体内存利用率，MP_i表示实际数值，MP₀表示设定的期望值
CPU_i，CPU₀	CPU利用率，指MCDN服务节点Si当前的整体CPU利用率，CPU_i表示实际数值，CPU₀表示设定的期望值
X_m,i	0,1变量，X_m,i=1，表示将用户请求Rm指定到MCDN服务节点Si

期望值	D₀	T₀ ,N₀ ,F₀	MP ₀,CPU₀
Case1	0.6	0.5,0.5,0.5	0.1,0.1
Case2	0.4	0.1,0.1,0.1	0.1,0.1
Case3	0.2	0.2,0.2,0.2	0.1,0.1

期望值	(S₁ ,S₂ ,S₃,…,S₂₀)
Case1	(0,0,0,0,33,0,0,0,0,26,0,0,0,41,0,0,0,0,0,0)
Case2	(0,0,0,0,0,17,0,0,0,38,0,0,0,0,0,55,0,0,0,0)
Case3	(100,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0)

Research on the mobile CDN architecture and the resource scheduling method

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