Heterogeneous network access control method based on multi-objective optimization

A multi-objective optimization, heterogeneous network technology, applied in the field of heterogeneous network access control based on multi-objective optimization, can solve problems such as impact

Inactive Publication Date: 2015-04-29
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing heterogeneous network access control method that reduces the new call blocking rate is likely to affect the served users in the network. The present invention provides a heterogeneous network based on multi-objective optimization. Network Access Control Method

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  • Heterogeneous network access control method based on multi-objective optimization
  • Heterogeneous network access control method based on multi-objective optimization
  • Heterogeneous network access control method based on multi-objective optimization

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specific Embodiment approach 1

[0029] Specific implementation mode one: combine figure 1 with figure 2 Describe this implementation mode, the heterogeneous network access control method based on multi-objective optimization described in this implementation mode, it includes the following steps:

[0030] Step 1: Use λ separately 1 , lambda 2 , lambda 3 and lambda 4 Indicates the relative importance of new call blocking rate, handover drop rate, handover times and system throughput to service quality QoS in a heterogeneous network. The larger the value is, the more important it is to service quality QoS. 01 ,λ 2 ,λ 3 ,λ 4 1 +λ 2 +λ 3 +λ 4 = 1;

[0031] Step 2: According to the information obtained by the access controller of each base station and access point in the heterogeneous network, obtain the new call blocking rate P of the base station and access point in the heterogeneous network n (t), switch drop rate P h (t), the number of switching requests H n (t) and the throughput T(t) of the het...

specific Embodiment approach 2

[0035] Specific implementation mode two: this implementation mode is a further limitation of the heterogeneous network access control method based on multi-objective optimization described in specific implementation mode one,

[0036]In step 2, according to the information obtained by the access controllers of base stations and access points in the heterogeneous network, the new call blocking rate P in the heterogeneous network is obtained n (t), switch drop rate P h (t), the number of switching requests H n (t) and the throughput T(t) of the heterogeneous network at the current time t is:

[0037] Through the access controllers of the base stations and access points in the network, collect and record the new call request information and the handover request information of the serving users within the continuous time T before the current time t, and collect and record the current time t of the base station and the access controller. The available resource information of the ...

specific Embodiment approach 3

[0043] Specific implementation mode three: this implementation mode is a further limitation of the heterogeneous network access control method based on multi-objective optimization described in specific implementation mode one,

[0044] In step 4, the new call blocking rate P of the base station and access point obtained according to step 3 h (t), switch drop rate P h (t), the number of switching requests H n (t) and the throughput T(t) of the heterogeneous network at the current time t, the value of the total cost function J(t) in the heterogeneous network is minimized, and the corresponding new calls of each base station and access point in the network are obtained The method of requesting admission probability and switching the admission probability of request is:

[0045] The total cost function of the heterogeneous network is:

[0046] J ( t ) = Σ k ...

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Abstract

A heterogeneous network access control method based on multi-objective optimization relates to a heterogeneous network access control method for solving the problem that the present existing heterogeneous network access control method reducing call congestion ratio can easily affect a user being served in the network. The method comprises the steps of: establishing a cost function via a plurality of service quality evaluation indicators, and calculating the new call request admittance probability and handoff request admittance probability of each base station and each access point in the heterogeneous network when the cost function is minimum. The invention reduces new call congestion ratio while ensuring that the other service quality evaluation indicators are in an acceptable range, improves system usage efficiency, and is used for the network access of the user in the heterogeneous network.

Description

technical field [0001] The invention relates to a heterogeneous network access control method, in particular to a heterogeneous network access control method based on multi-objective optimization. Background technique [0002] With the continuous development of various wireless access technologies, some areas will be simultaneously covered by multiple wireless networks such as WCDMA network and wireless local area network (WLAN). Because the design intentions of these access networks are different from the technical standards, the performance of some wireless access networks shows obvious differences and complementarities. On the other hand, the mobile terminal equipment integrates various network interfaces and can access various wireless networks. At present, user communication needs tend to be diversified and personalized, and it is difficult to meet all the business needs of users with a single network. Therefore, in a heterogeneous wireless network environment, using ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W48/06H04W36/00
Inventor 顾学迈姜开元郭庆王振永杨明川贾敏宁磊陈立明周建人
Owner HARBIN INST OF TECH
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