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Study on Network Resource Allocation Mechanism and Algorithm with Guaranteed QoS

Author: ShenZuoYan
Tutor: GuanXinPing
School: Yanshan University
Course: Control Theory and Control Engineering
Keywords: Resource Allocation The level of spectrum sharing VCG mechanism Random Learning Admission control Random access
CLC: TN915.01
Type: Master's thesis
Year: 2009
Downloads: 99
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Abstract


With the emergence of the increase in the number of network users and the demand for high-bandwidth multimedia applications , the network resource management is becoming increasingly important. In wired networks , selfish always to seize a lot of network bandwidth , seriously affecting the quality of service for other users , reducing the overall network performance , There is an urgent need for new bandwidth allocation algorithm to solve the bandwidth problem of irrational use . In a wireless network , a large number of unlicensed spectrum resource has not been effectively utilized . Federal Communications Commission recommended that unauthorized users can use unlicensed spectrum does not interfere with authorized users , in order to improve the utilization of the spectrum resources . This proposal inspired the researchers on the study of the dynamic spectrum allocation algorithm . The first part of the paper mainly studied the wired network bandwidth allocation problem . VCG mechanism , a new bandwidth allocation mechanism , proved that the mechanism has a dominant strategy incentive compatible characteristics , and the mechanism is the only pure Nash equilibrium solution . Then guides the user through the strategic choices discrete stochastic learning algorithm , and analyzes the convergence of the algorithm . The second part of the thesis mainly studies the main problem of spectrum allocation between users , taking into account the interference temperature constraints and quality of service constraints from the user's level of shared cognitive radio network . The first method is proposed admission control is combined with the power control algorithm . As a starting point , to reduce the probability of interference temperature violation for different situations , the design of three different criteria for removal from the user , to ensure that the user dense network , accepted by the network from the user's quality of service constraints and primary user interference temperature constraints can be set up at the same time . The second solution is the main spectrum allocation from the user's configured to a non- convex optimization problem , after variable substitution and logarithmic transformation of a random access and power control combined distributed algorithm , the algorithm can converge to the non-convex the optimization problem of global optimal solution, and the convergence of the algorithm is analyzed theoretically . A numerical simulation algorithm designed to meet the design objectives in terms of performance , to ensure that the user's quality of service , improve the overall performance of the network system .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Communicate > Communication network > General issues > Communication Network Theory
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