云计算资源池ECMP协议和RSVP协议研究

发布时间：2018-04-21 06:04

本文选题：C-RAN + 虚拟资源池　；参考：《哈尔滨工业大学》2014年硕士论文

【摘要】：新型网络架构C-RAN(Centralized,Cooperative,Cloud Radio Access Network)是基于集中式基带处理池、由远端无线射频单元和天线组成的协作式无线网络和基于开放平台的实时云型基础网络架构,其中集中式基带处理池是采用高性能通用处理器和实时虚拟技术组成的虚拟资源池方案,虚拟资源池方案具有十分显著的优点,但还有一些技术难点需要得到解决:当高性能的通信处理单元集中在基带池之后,由于网络规模急剧增大,路由状况更加的复杂和繁琐,如何设计一个更加高效的路由协议来提升庞大网络负载下的传输性能和均衡网络的吞吐量;如何保障各种类型业务流的服务质量需求,在有限的资源下提升传输的可靠性和有效性。本论文针对虚拟资源池方案中的技术难点,从流量工程的角度出发,总结为两个方面的处理要点:1)采用等价多路径均分协议ECMP(Equal Cost Multipath Protocol)为数据流提供更加有效的路由选择;2)通过资源预留协议RSVP(Resource Reservation Protocol)为通信服务提供质量保障。流量工程通常包括两个方面:面向流量和面向资源。面向资源的核心是对资源的合理分配,对于流量工程基础上的路由算法,它的优化策略则主要是减少路径间的相互竞争,使得链路流量趋于平衡。因此本文提出了基于链路利用率平均值的动态ECMP算法,有效利用资源池中等价链路多的结构特性,在网络拓扑内实现各路径的负载均衡,仿真实验验证该方法能够有效的提高网络的吞吐量和传输效率。而面向流量的主要性能指标是增强流量的Qo S功能。本文根据流量工程面向资源的目标,基于OPNET平台实现了RSVP协议,验证RSVP对实时应用的通信质量保障,与现有的Best-effort机制相结合,共同完成对大规模资源池网络结构中的服务质量保障。实现每个中间节点(路由器)完成路径以及资源预留,解决同一条流的报文不同路径,避免路径拥塞导致丢包,保证低延迟的网络要求。两个协议相互配合,共同实现对资源池内的数据流的有效处理,保证传输的服务质量以及提高传输的效率。
[Abstract]:A new network architecture, C-RANN-Centralized Cloud Radio Access Network, is a collaborative wireless network based on a centralized baseband processing pool, consisting of remote radio frequency units and antennas, and a real-time cloud based network architecture based on an open platform. The centralized baseband processing pool is a virtual resource pool scheme composed of high performance universal processor and real-time virtual technology. However, there are still some technical difficulties to be solved: when the high performance communication processing unit is concentrated in the baseband pool, the routing situation is more complex and complicated because of the rapid increase of the network size. How to design a more efficient routing protocol to improve the transmission performance and balance network throughput under huge network load, how to ensure the quality of service requirements of various types of traffic flow, Improve the reliability and effectiveness of transmission with limited resources. Aiming at the technical difficulties in the virtual resource pool scheme, this paper starts from the point of view of traffic engineering. The main points of this paper are summarized as follows: 1) the equivalent multipath Multipath protocol (ECMP(Equal Cost Multipath protocol) is adopted to provide more efficient routing for data streams. (2) the resource reservation protocol RSVP(Resource Reservation protocol is used to guarantee the quality of communication services. Traffic engineering usually includes two aspects: flow oriented and resource oriented. The core of resource-oriented is the rational allocation of resources. For the routing algorithm based on traffic engineering, its optimization strategy is mainly to reduce the competition between paths and make the link traffic tend to balance. In this paper, a dynamic ECMP algorithm based on the average link utilization is proposed to effectively utilize the structural characteristics of multiple equivalent links in the resource pool, and realize load balancing of each path in the network topology. Simulation results show that the proposed method can effectively improve the throughput and transmission efficiency of the network. The main performance index of flow-oriented is to enhance QoS function of traffic. According to the resource-oriented goal of traffic engineering, this paper implements RSVP protocol based on OPNET platform, verifies the communication quality guarantee of RSVP for real-time application, and combines it with the existing Best-effort mechanism. Together to complete the large-scale resource pool network structure of the quality of service assurance. Each intermediate node (router) completes the path and resource reservation, solves the different paths of the same message, avoids the path congestion and guarantees the low delay network requirement. The two protocols cooperate with each other to realize the efficient processing of the data flow in the resource pool, to ensure the quality of service and to improve the efficiency of the transmission.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN915.04

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