A Network Selection Method Considering Quality of Service and Network Load in Heterogeneous Networks

A network load and quality of service technology, applied in network traffic/resource management, wireless communication, electrical components, etc., can solve problems such as failure to consider multiple factors of heterogeneous networks, unbalanced load, and low resource utilization

Active Publication Date: 2018-12-07
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the existing research literature, most of the factors under the heterogeneous network are not well considered, and only a part of them are often considered
Or the proposed network selection strategy cannot accurately use channel state information and network load information, etc., resulting in unbalanced load and low resource utilization

Method used

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  • A Network Selection Method Considering Quality of Service and Network Load in Heterogeneous Networks
  • A Network Selection Method Considering Quality of Service and Network Load in Heterogeneous Networks
  • A Network Selection Method Considering Quality of Service and Network Load in Heterogeneous Networks

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Embodiment Construction

[0092] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0093] see first figure 1 To illustrate the system model of communication in the heterogeneous network. Consider a heterogeneous network formed by LTE and WLAN. N in LTE L users, there are N in the WLAN W users, there are N n new users. The coverage radius of the LTE network is R LTE , the coverage radius of the WLAN network is R WLAN . The original users in the LTE and WLAN networks are evenly distributed in the corresponding areas. N n The new users are in the overlapping coverage area of ​​LTE and WLAN, and are randomly distributed.

[0094] All users are assumed to remain stationary after being distributed in a certain location. The channel model of the LTE network is a Rayleigh channel, and the channel of the WLAN network is considered ideal due to its small coverage radius.

[0095] In order to realize the differentiated service, consider two kinds ...

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Abstract

The invention discloses a network selection method considering service quality and network load in a heterogeneous network. Reasonable network selection is made through building of a utility function. The utility function consists of user QoS (Quality of Service) satisfaction, a channel gain and user cost. In the utility function, the QoS demands of different businesses are considered, so that differentiated service is realized; and meanwhile, each part in the utility function is weighted according to user preferences, so that the user satisfaction is enhanced. Moreover, channel state information is utilized, and the network load condition is considered on the aspect of the cost part of the utility function, so that the situation of paralysis of a certain network due to over-high load is avoided as much as possible, and the wireless resource utilization ratio is increased.

Description

technical field [0001] The invention belongs to the field of network selection methods of wireless communication systems, and in particular relates to a network selection method considering service quality and network load in a heterogeneous network. Background technique [0002] With the rapid development of wireless communication technology, various wireless access technologies are constantly emerging. Each wireless access technology has its own characteristics. For example, the LTE cellular system has high speed and wide coverage, but the deployment cost is high; WLAN has high bandwidth, small-scale coverage, and low cost, which can effectively alleviate the communication burden in hotspot areas. Therefore, combining different access technologies to build a heterogeneous network, giving full play to the advantages of various networks, and providing users with better services has become an inevitable trend in the future development of wireless communications. [0003] At...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/08H04W36/14H04W36/26H04W72/08
Inventor 杜清河吴小燕任品毅
Owner XI AN JIAOTONG UNIV
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