Based On The Host Resource Management Module Design Service Metadata Architecture

With the rapid development of internet, more and more network applications such as VOIP, VOD, and network conference are having the higher demand for QoS, which also push more and more traffic load to the Internet edge equipments and end hosts. Newly emerged bottleneck problems in end systems ask for deploying Quality of Service (QoS) in them. However, TCP/IP is based on layered architecture, which can provide only"best effort"QoS, and is not able to satisfy the demand for the QoS of today's network applications by design. Therefore, Non-Layered network architecture is introduced to overcome these issues that layered network architecture has.This paper presents a new Non-Layered network architecture, which is Service unit network architecture (SUNA). SUNA focus on end systems where almost all network elements can be found and most functions in a network system must be implemented. So, it is important to do further research of QoS in end systems. In SUNA, QoS is implemented by providing flow control and process scheduling mechanisms, which will be discussed elaborately in this paper. The primary work of this dissertation are as follows:1. Presenting the frame of resource management in the end-system of SUNA。A end-system have many network applications which require a lot of different netowrk services, and shall possess of the ability to assort with distinct requirement of QoS. Firstly, this dissertation works out the universalizable questions which should be solved by a end-system when provides QoS, then puts forward the frame of resource management in the end-system of SUNA.2. Presenting a enhance Priority Queuing and token bucket algorithm in end-system. The enhance Priority Queuing algorithm classifies data stream in accordance with the service type or service priority defined. with the throughput limitation of the high-priority in-flow packets, It guarantees the bandwidth of the other packets, consequently, solved the issue that high priority flows may exhaust the bandwidth of low priority flows. Flow control can monitor the data stream of each network application that it is possible to make each network application send data in the way that this kind of request service type requires.Also, The test environment for SUNA have been setup, after testing, the test results indicates that SUNA can provide a better QoS in the end systems, which ensures the high quality of network applications. Also, SUNA can be extended easily to meet the further requirments.