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Vertical switching method based on Bayesian decision in heterogeneous wireless network

A heterogeneous wireless network and vertical handover technology, applied in the field of communication, can solve problems such as poor flexibility, and achieve the effect of avoiding too much subjectivity and scientific decision-making results

Active Publication Date: 2018-06-29
JILIN UNIV
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This type of algorithm is relatively simple, but less flexible

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  • Vertical switching method based on Bayesian decision in heterogeneous wireless network
  • Vertical switching method based on Bayesian decision in heterogeneous wireless network
  • Vertical switching method based on Bayesian decision in heterogeneous wireless network

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Embodiment Construction

[0072] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0073] Please refer to the attached figure 1 An embodiment of the present invention provides a Bayesian decision-based vertical handover method in a heterogeneous wireless network, which specifically includes the following steps:

[0074] S1: Calculate the prior probability of switching;

[0075] S2: Calculate the posterior probability of switching;

[0076] S3: determine the combined weight of the network parameters;

[0077] S4: Construct a profit functio...

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Abstract

The invention discloses a vertical switching method based on Bayesian decision in a heterogeneous wireless network. The present invention proposes the vertical switching method based on the Bayesian decision for the problem that a mobile terminal is frequently switched between different networks in a heterogeneous wireless network environment. A prior probability of terminal switching is calculated by using received signal strength (Received Signal Strength, RSS) of the terminal; a posterior probability of the terminal switching is calculated in combination with the Bayesian formula; a networkparameter is determined by using an analytic hierarchy process and a entropy method, comprising: weights of an available bandwidth, delay, a bit error rate and delay jitter, and income functions of different actions are constructed in different states of the mobile terminal based on a simple weighting method; and the posterior probability and the income function of the switching are comprehensively considered to construct a posterior gain function of the switching, and switching decision is performed based on the posterior gain function. By adoption of the vertical switching method, the number of switching is effectively reduced, the "ping-pong effect" in the switching process is effectively inhibited, and the resource utilization rate of the system is improved.

Description

technical field [0001] The present invention relates to the field of communication technology, and more specifically relates to a Bayesian decision-based vertical handover method in a heterogeneous wireless network. Background technique [0002] In the future, the development of wireless communication technology will prompt the emergence of more new wireless access technologies. Different access technologies have their own emphasis on providing services for end users and cannot be replaced. Relying on a certain access technology alone can no longer meet the increasingly diverse needs of end users. The next-generation wireless network will develop towards the trend of synergetic and integrated heterogeneous wireless networks. Different wireless networks cover each other in certain areas, forming a heterogeneous wireless network. Heterogeneous wireless networks are not just the geographical overlap of multiple wireless networks, but also the coordination of different wireles...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/00H04W36/14H04W36/16H04W36/30
CPCH04W36/0094H04W36/14H04W36/165H04W36/30
Inventor 钱志鸿杨冰涛许建华黄岚王雪
Owner JILIN UNIV
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