Visible light and radio frequency hybrid communication method based on energy collection

An energy harvesting and radio frequency hybrid technology, applied in wireless communication, short-range systems, power management, etc., can solve the problems of insufficient radio frequency spectrum resources, limited bandwidth, and restricting the development of wireless data communication technology.

Active Publication Date: 2020-01-03
XI AN JIAOTONG UNIV
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Problems solved by technology

[0002] In today's society, the demand for wireless data transmission is increasing, but the problems of insufficient radio fr...

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  • Visible light and radio frequency hybrid communication method based on energy collection
  • Visible light and radio frequency hybrid communication method based on energy collection
  • Visible light and radio frequency hybrid communication method based on energy collection

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Embodiment Construction

[0091] The symbols are defined as follows: R M is the size of the room radius, R S is the radius of the lighting equipment coverage, H is the height of the indoor ceiling, is the distance between the outdoor macro base station and the indoor user, is the distance between the indoor user and the outdoor target user, λ u is the distribution density of indoor users, λ v is the distribution density of indoor lighting equipment, P M is the transmit power of the outdoor macro base station, P U is the transmission power for indoor users to transmit information to outdoor target users, the energy conversion efficiency ρ and η are both set to 0.5, the path loss coefficient α is set to 3, the noise power α is set to 1e-10, and the SINR threshold is set to 1e-2.

[0092] The invention provides a hybrid communication method of visible light and radio frequency based on energy collection, which adopts lighting equipment to transmit visible light signal energy to users covered by it,...

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Abstract

The invention discloses a visible light and radio frequency hybrid communication method based on energy collection. The visible light and radio frequency hybrid communication method comprises the steps that lighting equipment transmits visible light information and energy to a user capable of receiving the light of the lighting equipment at the same time, and the user collects the visible light energy and carries out the information decoding, thereby obtaining the data transmission interruption probability of a visible light communication process; the total visible light power collected by theindoor user from a plurality of covered lighting devices is calculated, and the communication mode of radio frequency transmission from the indoor user to the outdoor is judged; the indoor user transmits the information to be transmitted to the outdoor user by using a point-to-point radio frequency communication technology; or the indoor user carries the information to be transmitted to the radiofrequency signal in the environment where the indoor user is located through the backscattering technology and then transmits the information to the outdoor user through backscattering; and a data transmission outage probability using the traditional radio frequency communication mode and the backscatter communication mode respectively is obtained through calculation, thereby finishing the communication. According to the visible light and radio frequency hybrid communication method, the problems of radio frequency spectrum resource shortage and interference between radio frequency transmission systems are alleviated, and the transmission rate is improved.

Description

technical field [0001] The invention belongs to the technical field of wireless energy supply communication, and in particular relates to a visible light and radio frequency hybrid communication method based on energy collection. Background technique [0002] The demand for wireless data transmission in today's society is increasing day by day, but the problems of insufficient radio frequency spectrum resources and limited bandwidth limit the development of wireless data communication technology to a large extent. However, the visible light band spectrum resources are abundant and mostly unused, and the high frequency of visible light also makes it less limited by the bandwidth, and does not require special configuration (directly use the energy collected from the light emitted by indoor lighting equipment for data transmission, no need Like radio frequency communication, base stations and energy beacons need to be set up), the channel capacity is large and there is no elect...

Claims

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Application Information

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IPC IPC(8): H04B10/116H04W52/14
CPCH04B10/116H04W52/14
Inventor 张超褚镭郦
Owner XI AN JIAOTONG UNIV
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