A Dynamic QoS Mapping Method Between Heterogeneous Networks

Abstract

The invention relates to a dynamic QoS mapping method between heterogeneous networks. The method comprises the following steps: carrying out service classification according to different QoS parameter requirements of various services, dividing the QoS index of each service into high, medium and low three sub-grades, corresponding to upper limit, average and lower limit of QoS parameter space of the service respectively; determining QoS sub-grades needing mapping according to the load state of a target network and realizing dynamic QoS mapping of the service in the target network by utilizing a space vector distance judgment algorithm; and when network load changes, carrying out dynamic bidirectional adjustment on the QoS mapping of the existing services by utilizing secondary ordering based on service QoS sub-grades and priorities. According to the method, not only the QoS of the service is guaranteed, but also the QoS guarantee of the service is improved when the network is idle; and the utilization rate of network resources is improved.

Description

technical field [0001] The invention relates to the fusion network technology of a cellular network and a WLAN in the field of information technology, in particular to a dynamic QoS mapping method between heterogeneous networks. Background technique [0002] In recent years, with the rapid development of intelligent multi-mode terminals, the traffic of wireless data services has shown explosive growth, resulting in huge pressure on the network capacity of the original cellular network, and the cost is high and the speed is slow. The service requirements of the Internet are becoming more and more diverse. Different network access technologies have their own strengths and weaknesses in terms of system capacity, coverage, data rate, mobility support capability, tariff, etc. The transmission network of a single technology cannot meet all the above-mentioned requirements. The needs of users for services require the integration of multiple wireless access networks to meet the need...

AI Technical Summary

Problems solved by technology

[0006] (1) Select a benchmark network for mapping, that is, select a QoS classification with an appropriate relative granularity, and use it as a basis to compare different QoS categories of other networks according to QoS characteristic parameters such as delay, delay jitter, and packet loss rate. 1. Mapping with the selected benchmark network QoS classification; this mapping method will cause error accumulation due to multiple mappings, which increases the uncertainty of service quality provision;

[0007] (2) Formulate a set of unified rules for QoS mapping between different networks, establish a unified mapping table between Diffsery / Intsery, UMTS network, IP network and IEEE802.11 network for different types of services, and implement heterogeneous networks based on the unified mapping table. Two-to-two mapping; the mapping table of this mapping method is relatively complicated, and the mapping method is fixed, not flexible enough, and cannot dynamically adjust the QoS mapping relationship of heterogeneous networks according to real-time changes in the specific network status

[0008] In addition, in the reference [Misun Ryu, Youngmin Kim, HongshikPark.Systematic QoSClass Mapping Framework over Multiple Heterogeneous Networks.ProcNEW2AN2008.St.Petersburg, Russia, 2008,5174:212-221], the author proposed a business coordinate map based on ASM The QoS mapping mechanism of the application service is mapped to the ASM coordinate map according to the two attributes of the delay and packet loss rate of the application service, and the space vector distance judgment method is used to map the QoS service classification of the target network. This mapping method provides a The service-based fine-grained QoS mapping mechanism does not need to establish a mapping table in advance, and there will be no cumulative error caused by multiple mappings, but it can still only perform static mapping of specific network QoS classifications; in the reference [Liu Lu. Heterogeneous / Research doctoral dissertation on end-to-end service quality control and management in converged networks [Beijing University of Posts and Telecommunications, June 11, 2010], the author proposes a dynamic QoS mapping method based on the mapping table, which needs to be based on the initial mapping table, That is, the service access / handover to the target network is based on the static mapping table, and there may still be cumulative errors caused by multiple mappings. In addition, the dynamic adjustment of the QoS parameter mapping is only to adjust the QoS sub-level when the network is congested. Two-way adjustment mechanism, network resources cannot be fully utilized when the network is idle

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