Abstract
<p><span style="font-size: small;"><span style="font-family: Times New Roman;">In accordance with the deployment requirements of WLAN node in college student dorms and its features of application environment, this paper studies the relevance among factors like radio-frequency signal transmission characteristics, communication distance, AP height and transmission path, etc., with a case study of AP radio frequency 2.4GHz. Experiments show that the attenuation of wireless network signal in student dorms conforms to Keenan-Motley model. When AP is fixed, the signal strength received by laptop generally reduces with the increase of communication distance, yet just opposite with packet loss rate. When deploying AP, 1.25-1.75 height is ideal, and one-side coverage of 3 dorm rooms optimal. Based on the above researches, a relational model of AP height, communication distance and received signal strength is established. In it, model parameter and AP height display a cubic polynomial relationship, and attenuation coefficient and AP height show a quadratic polynomial relationship. Experiment results demonstrate that this model can satisfactorily predict the received signal strength of different AP heights and communication distances, providing technical support for wireless network deployment in student dorms. </span></span></p>
Highlights
Wireless Local Area Networks (WLAN), which serves as a network established within a certain area through wireless communication technology as well as the result of combination between computer network and wireless communication technology, can provide the functions of Local Area Network (LAN) and allow users to access internet network at time and any place with using wireless multi-address channel as the transmission medium [1] [2]
WLAN is undergoing the evolution from being a supplement for LAN to operable public wireless local area network, becoming an inevitable supplement to 3G/4G mobile network
WLAN planning refers to design of reasonable and feasible wireless network layout according to the requirements upon coverage and capacity as well as other special ones in combination with the terrain features of the covered area with the lowest investment to satisfy the current demand and ensure future expandability of network
Summary
Wireless Local Area Networks (WLAN), which serves as a network established within a certain area through wireless communication technology as well as the result of combination between computer network and wireless communication technology, can provide the functions of Local Area Network (LAN) and allow users to access internet network at time and any place with using wireless multi-address channel as the transmission medium [1] [2]. WLAN planning refers to design of reasonable and feasible wireless network layout according to the requirements upon coverage and capacity as well as other special ones in combination with the terrain features of the covered area with the lowest investment to satisfy the current demand and ensure future expandability of network. In order to solve the key technological problems in student dorms deployment, this paper mainly studies the transmission features of wireless signal sent by AP in student dorms under different transmission directions and heights, conducts on-field measurement of received signal strength from 3 different directions and of different AP heights, and establishes a model for predicting attenuation of 2.4GHz signal in student dorms, so as to provide the technical foundation for highly stable and reliable WLAN node deployment
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