Method for realizing efficient switching in VLC/RF heterogeneous network

A heterogeneous network and network switching technology, applied in short-distance systems, electrical components, free space transmission, etc., can solve problems such as ignoring the signal-to-noise ratio, increasing the difficulty of building hardware facilities, high switching times, and time complexity , to simplify the hardware facilities, reduce the probability of interruption, and reduce the time complexity

Active Publication Date: 2019-11-22
XIAN UNIV OF TECH
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Problems solved by technology

Although this algorithm achieves the maximum channel signal-to-noise ratio, it introduces high switching times and time complexity, ignores the size of the signal-to-noise ratio required by user services, and increases the difficulty of building hardware facilities

Method used

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Embodiment Construction

[0018] The technical solutions of the present invention will be described in detail below in conjunction with specific embodiments.

[0019] A method for realizing efficient switching in a VLC / RF heterogeneous network of the present invention, specifically:

[0020] For a single user, after the user's data request is sent to the central controller, the central controller analyzes the required rate Γ u , and with the set rate threshold Γ q To compare, issue the following commands:

[0021] If Γ u >Γ q , it is directly connected to the VLC network;

[0022] If Γ u q , it is directly connected to the RF network;

[0023] If Γ u =Γ q , access the VLC network or RF network with less load.

[0024] When there are multiple users, after the user's data request is sent to the central controller, the central controller analyzes the required rate Γ u , and with the channel rate Γ of the current VLC network v To compare, issue the following commands:

[0025] If Γ v u , the u...

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Abstract

The invention discloses a method for realizing efficient switching in a VLC/RF (Virtual Local Area Network/Radio Frequency) heterogeneous network. The method comprises the following steps: when a single user uses the network, switching the network based on the relationship between the required rate Gamma u of the user and a set rate threshold Gamma q; and when multiple users use the method, network switching is carried out based on the relationship between the required rate Gamma u of the users and the channel rate Gamma v of the current VLC. According to the method for realizing efficient switching in the VLC/RF heterogeneous network, hardware facilities are simplified, the outage probability and the time complexity are reduced, the QoE of a user is improved, and efficient switching is realized.

Description

technical field [0001] The invention belongs to the technical field of indoor visible light communication, and relates to a method for realizing efficient switching in a VLC / RF heterogeneous network. Background technique [0002] At present, wireless communication has greatly developed in terms of data transmission rate, mobility, coverage and spectrum efficiency. However, in the face of the access of hundreds of billions of devices in the future and the increasing traffic demand, it is obvious that Radio Frequency (RF) The limited spectrum resources cannot be satisfied either. The contradiction between limited network transmission capacity and unlimited business traffic demand prompts people to explore new technical means to cope with the continuously increasing traffic demand. Visible Light Communication (Visible Light Communication, VLC) uses light in the visible light band of 380nm-780nm as the information carrier, without the need for optical fiber and other cable chan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/14H04W36/28H04W36/30H04B10/116
CPCH04B10/116H04W36/14H04W36/28H04W36/30
Inventor 邓莉君马趁想柯熙政吴鹏飞
Owner XIAN UNIV OF TECH
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