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Research on Joint Call Admission Control Algorithm in Wireless Heterogeneous Network

Author: WangXu
Tutor: Pan
School: Nanjing University of Posts and Telecommunications
Course: Communication and Information System
Keywords: Wireless heterogeneous networks Joint Radio Resource Management Equivalent bandwidth Joint call admission control
CLC: TN929.5
Type: Master's thesis
Year: 2012
Downloads: 49
Quote: 0
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Abstract


With the rapid development of mobile communications and broadband wireless access technology , people come to realize that the trend of the future development of mobile communications is not the dominance of certain technology , but a variety of wireless access technologies coexist and complement each other to provide diversification access services , seamless mobility to meet the demand for personal communication and access to information . Future mobile communication network is bound towards broadband , flattened , ubiquitous , all-IP heterogeneous wireless converged network direction , and ultimately \In the heterogeneous network, the different resources available between the different access networks , as well as the use and management of the radio resource different ways . Therefore, the need to establish a joint radio resource management collaborative management of radio resources between different access networks . This paper studies the 3GPP joint radio resource management model and current joint call admission control algorithm . The joint call admission control algorithm does not use the scene single . The analysis found that in these algorithm model , are based on the traffic occupancy system bandwidth , are not given to how to obtain the amount of system bandwidth by the QoS requirements of a business . Therefore, based on the concept of \According to various systems of different QoS requirements of the business , you can calculate the equivalent bandwidth occupied by the corresponding business system bandwidth resources , and can calculate the remaining capacity of each system . On the basis of equivalent bandwidth , Chapter WCDMA LTE joint session shunt and dynamic threshold - based call admission control mechanism . Session shunt accepted new calls and business shunt , the business shunt to different RATs can get significant system capacity gain ; dynamic threshold according to the business different QoS needs or level of business set different thresholds , and on the threshold value updated according to the network load cycle . The analysis and simulation results show that the proposed joint call admission control mechanism in terms of call blocking probability and handover call drop rate performance .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Wireless communications > Mobile Communications
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