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Research and Implementation of the key technologies of 1xEV-DO radio access network QoS

Author: TianHongWei
Tutor: GeBaoZhong
School: PLA Information Engineering University
Course: Communication and Information System
Keywords: The quality of wireless service EV-DO Rev. A Multi-stream radio link protocol PFS - A Ac - A
CLC: TN925
Type: Master's thesis
Year: 2005
Downloads: 87
Quote: 1
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Abstract


With the rapid development of network multimedia technology, multimedia applications are emerging on the Internet, such as IP telephony, video conferencing, video on demand, distance education and multimedia real-time business. Mobile network data services from a single data transfer has been gradually developed to the direction of the transmission of data, voice, images and other multimedia information. Experts recent years, mobile network user demand for data services is expected to reach 40% of the total business needs will continue to increase the proportion of real-time applications. The face of the rapid growth of a variety of mobile applications on the quality of service requirements to support real-time data services, high-speed 3G network has become the inevitable trend of development in the mobile network. In March 2004, the 3GPP2 Organization for Standardization released the latest standards of cdma2000 EV-DO Rev. A EV-DO Rev. A has a faster transfer rate: the former to the highest rate of 3.1Mbit / s and the reverse maximum rate of up to 1.8Mbit / s; increased support for quality of service, and to provide data services end-to-end QoS guarantee; support better QoS scheduling, different network arrangement according to the customers' business needs, according to the Internet or games and applications such as real-time network data requirements for the allocation of network capacity, the system can be selected depending on the business needs of high-capacity or low delay, improving the user experience. This issue is the major task is the key technology for EV-DO Rev. A radio access network QoS mechanisms, the research and implementation of the key technologies of wireless bearer service user plane QoS mechanisms. I finished work are as follows: First of all, in terms of classification, I the MFRLP agreement research and in-depth analysis of the system; gives the detailed design of the program based on the VxWorks operating system platform MFRLP module; completed MFRLP module The function of the various components of coding. Secondly, in terms of packet scheduling, on the basis of the PFS algorithm commonly used in the EV-DO Rev. O, I, combined with the delay requirements and priority of bearer services suitable for wireless environment QoS packet scheduling algorithm, PFS-A algorithm. Detailed analysis of the role and influence of various parameters of the PFS-A algorithm. In order to further validate the effectiveness of the PFS-A algorithm, using Matlab simulation software in a number of different users, different data services under the conditions of PFS algorithm and PFS-A algorithm simulation, and simulation results are analyzed and demonstrated. Finally, access control, in order to achieve the agreed quality of service in a business negotiation, to ensure QoS scheduling algorithm is always in a reasonable load status, I combined PFS-A algorithm, an effective access control algorithm, AC -A algorithm. Detailed analysis of the role and influence of the various parameters of the AC-A algorithm. Research and implementation of the key technologies of the EV-DO Rev. A radio access network QoS mechanisms, contribute to the extensive development of the mobile network real-time business, to adapt to the development trend of Internet integration to meet the large demand for mobile multimedia applications. In fact QoS software upgrades can also be implemented in the EV-DO Rev. O. As of August 2004, has eight commercial EV-DO Rev. O network, the number of users is 869 million people. The ability to provide QoS in these commercial network has great practical significance.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Wireless communications > Radio relay communications,microwave communications
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