Satellite network access selection method based on QoS constraint and load balancing

A satellite network and access selection technology, applied in the field of communication, can solve problems such as increased data blocking and transmission interruption probability, unbalanced load, high delay of real-time services, etc., to reduce data blocking and transmission interruption probability, enhance Interactive experience, the effect of improving satisfaction

Pending Publication Date: 2020-12-04
NO 20 RES INST OF CHINA ELECTRONICS TECH GRP +1
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Problems solved by technology

The disadvantage of this method is that, as user service requests continue to increase, only considering the best individual service quality in the process of user access selection may lead to unbalanced overall load of the network, making some satellites very lightly loaded and others Satellites are fully loaded, which wil

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  • Satellite network access selection method based on QoS constraint and load balancing
  • Satellite network access selection method based on QoS constraint and load balancing
  • Satellite network access selection method based on QoS constraint and load balancing

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Embodiment Construction

[0028] The embodiments and effects of the present invention will be further described below in conjunction with the accompanying drawings.

[0029] refer to figure 1 , the scenario used in this embodiment is a double-layer satellite network, which includes 3 high-orbit satellites GEO and 48 low-orbit satellites LEO. When a ground user initiates a service request, the user is covered by multiple satellites at the same time, and it is necessary to find a satellite that can provide users with good service quality and balance the network load for access.

[0030] refer to figure 2 , the specific steps of this embodiment are as follows:

[0031] Step 1: Determine the satellite set S covering the current user.

[0032] When a ground user initiates a service request, it is necessary to determine all the satellites covering the current user to form a satellite set S={S 1 ,S 2 ,S j ,...,S n}, where S j Indicates the jth satellite covering the current user, 1≤j≤n, n represents ...

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Abstract

The invention discloses a satellite network access selection method based on QoS (Quality of Service) constraint and load balancing, which mainly solves the problems of unbalanced overall load of a network and high real-time service time delay when a satellite is selected to access in the prior art. The method comprises steps of when a user initiates a service request, firstly identifying the typeof the service, and judging the relationship between the idle bandwidths of all satellites covering the user and the minimum bandwidth required by the service request to obtain an accessible satellite set; determining the dependence degree of the service on each parameter, and calculating the QoS comprehensive weighted value and the network load value of each satellite in the accessible satelliteset; and finally, calculating to obtain a comprehensive utility function value, and taking the satellite with the minimum function value as the satellite selected to be accessed by the user. According to the method, the service quality of the user and the overall load condition of the network are comprehensively considered, the end-to-end time delay of the real-time service and the new call blocking rate of the network are reduced, the satisfaction degree and the resource utilization rate of the user are improved, and the method can be used for satellite network communication.

Description

technical field [0001] The invention belongs to the technical field of communication, and further relates to a satellite network access selection method, which can be used for user selection access during satellite network communication. Background technique [0002] Traditional terrestrial networks will be affected by factors such as natural disasters and extreme terrain during the construction process, making it difficult to build network equipment. Therefore, only relying on terrestrial wireless communication systems cannot achieve true global seamless coverage. Satellite communication has the advantages of wide coverage, good flexibility, and strong anti-destructiveness, and can supplement and improve the ground network to a large extent. In recent years, with the development of satellite communication technology, the number of satellites deployed in the satellite network has gradually increased, and the possibility of ground users being simultaneously covered by multipl...

Claims

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Application Information

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IPC IPC(8): H04W28/02H04W28/08H04W48/06H04W84/06
CPCH04W28/0268H04W28/08H04W48/06H04W84/06Y02D30/70
Inventor 刘勤平莉张凤磊迟凯李红艳
Owner NO 20 RES INST OF CHINA ELECTRONICS TECH GRP
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