Heterogeneous wireless network selection method based on utility function

A heterogeneous wireless network, utility function technology, applied in wireless communication, network traffic/resource management, advanced technology, etc., can solve problems such as high subjective arbitrariness

Active Publication Date: 2018-08-17
SOUTH CHINA UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The subjective weighting method determines the weight according to the decision-maker's subjective cognition of the importance of each attribute, and the subjective randomness is relatively large

Method used

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  • Heterogeneous wireless network selection method based on utility function
  • Heterogeneous wireless network selection method based on utility function
  • Heterogeneous wireless network selection method based on utility function

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Experimental program
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Embodiment

[0081] figure 1 Shown is a flow chart of the steps of the present invention, specifically comprising:

[0082] (1) Obtain network attribute data and current user service type.

[0083] Obtain the network attribute data provided by the network provider and the type of business performed by the user. Network attribute data includes available bandwidth, network cost, energy consumption, and network load; user business types include voice, data, and video. The parameters of the network attributes in this embodiment are shown in Table 1.

[0084] Table 1 Parameters of network properties

[0085]

[0086] (2) Construct a utility function for each decision-making network attribute, and solve the utility value of the corresponding attribute according to the utility function of the network attribute; among them, the relationship between the attribute value and user satisfaction determines the utility function adopted;

[0087] In this embodiment, the utility function of each net...

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Abstract

The invention discloses a heterogeneous wireless network selection method based on a utility function. The method includes the following specific steps: (1) acquiring network attribute data and a current user service type, wherein the network attribute data includes available bandwidth, network costs, energy consumption and network load, and the user service type includes voice, data and videos; (2) constructing a utility function for each decision network attribute, and solving a utility value of the corresponding attribute according to the utility function of the network attribute, wherein the relationship between the attribute value and the user satisfaction determines the utility function that is used; (3) constructing a utility matrix according to the solved utility value of the network attribute in each network; (4) constructing a comprehensive weight according to a subjective weight and an objective weight; and (5) calculating the comprehensive utility of networks, and selectingan optimal network for access. According to the scheme of the invention, the user preferences, network states, energy consumption of equipment, network costs and network load are comprehensively considered, and the selected optimal network can achieve an optimal balance between the QoS and the network load.

Description

technical field [0001] The invention relates to the field of heterogeneous wireless networks, in particular to a method for selecting a heterogeneous wireless network based on a utility function. Background technique [0002] In the traditional heterogeneous wireless network selection, the selection of the optimal network generally depends on multiple attributes such as bandwidth, delay jitter, energy consumption, price, etc., that is, the selection of the optimal network in the heterogeneous wireless network is a multi-attribute decision-making problem . In the decision-making process, most literatures standardize the actual measured attribute value as the decision value of the multi-attribute decision-making algorithm. However, different services (such as voice, video conferencing, and video streaming, etc.) have different requirements on the network. For example, for bandwidth, the speed of voice is generally tens of Kb, but it is not enough for video conferencing, that ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/08H04W28/24H04W48/18
CPCH04W28/08H04W28/24H04W48/18Y02D30/70
Inventor 俞鹤伟石雄雄
Owner SOUTH CHINA UNIV OF TECH
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