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Indoor vlc-wifi heterogeneous network joint subcarrier allocation and power control resource allocation method

Active Publication Date: 2022-04-22
CHINA MOBILE M2M
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  • Application Information

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Problems solved by technology

However, the overlapping communication coverage areas of multiple VLC APs will lead to Inter Cell Interference (ICI) problems, which will affect user experience and system throughput.

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  • Indoor vlc-wifi heterogeneous network joint subcarrier allocation and power control resource allocation method
  • Indoor vlc-wifi heterogeneous network joint subcarrier allocation and power control resource allocation method
  • Indoor vlc-wifi heterogeneous network joint subcarrier allocation and power control resource allocation method

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Embodiment Construction

[0030] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic concept of the present invention, and the following embodiments and the features in the embodiments can be combined with each other in the case of no conflict.

[0031] Among them, the figures are only used for exemplary illustrations, and what are shown are only schematic diagrams, rather than actual pictures, and sho...

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Abstract

The invention relates to an indoor VLC-WiFi heterogeneous network joint subcarrier allocation and power control resource allocation method, belonging to the technical field of optical wireless communication. The method of the present invention first adopts the user center access rule to determine the maximum number of associated VLC APs of the user, and adopts the user association algorithm based on AP load balancing to determine the associated AP set of all users; then, adopts the VLC subcarrier allocation based on interference suppression The algorithm determines the set of allocated subcarriers of all VLC APs to suppress the inter-cell interference of the indoor VLC-WiFi heterogeneous network; finally, the VLC AP transmit power control algorithm based on residual interference cancellation is used to determine the transmit power control coefficients of all VLC APs. The method associates each user with an AP with a high signal-to-noise ratio, and each VLC AP uses a subcarrier that does not interfere with other users other than its associated user and controls the transmission power of the VLC AP to improve the performance of the VLC-WiFi heterogeneous network. Inter-cell interference problems, improving network throughput and user satisfaction.

Description

technical field [0001] The invention belongs to the technical field of optical wireless communication, and relates to an indoor VLC-WiFi heterogeneous network joint subcarrier allocation and power control resource allocation method. Background technique [0002] Visible Light Communication (VLC)-Wireless Fidelity (WiFi) heterogeneous network has received extensive attention and research due to its advantages of high communication rate, low energy consumption, stability and reliability. A VLC network usually adopts a dense deployment solution of multiple access points (Access Point, AP) to achieve full coverage of indoor communications. However, overlapping communication coverage areas of multiple VLC APs will cause inter-cell interference (Inter Cell Interference, ICI) problems, thereby affecting user experience and system throughput. By designing an effective interference management method, ICI can be suppressed during the resource allocation process. Therefore, the resour...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/04H04W72/08H04W84/12H04B10/116H04W72/54
CPCH04W72/0453H04W72/0473H04W84/12H04B10/116H04W72/541
Inventor 刘焕淋蒲欣陈勇黄冰川黄美娜
Owner CHINA MOBILE M2M
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