CN111147140A - Mobile communication network system based on visible light communication technology - Google Patents
Mobile communication network system based on visible light communication technology Download PDFInfo
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- CN111147140A CN111147140A CN202010077895.4A CN202010077895A CN111147140A CN 111147140 A CN111147140 A CN 111147140A CN 202010077895 A CN202010077895 A CN 202010077895A CN 111147140 A CN111147140 A CN 111147140A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/114—Indoor or close-range type systems
- H04B10/116—Visible light communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/80—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water
- H04B10/85—Protection from unauthorised access, e.g. eavesdrop protection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/33—Services specially adapted for particular environments, situations or purposes for indoor environments, e.g. buildings
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computer Security & Cryptography (AREA)
- Optical Communication System (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention relates to the technical field of optical mobile communication, in particular to a mobile communication network system based on a visible light communication technology, which comprises a core backbone network, a server, a plurality of visible light communication base stations and a plurality of optical frequency mobile phones, wherein the core backbone network comprises a plurality of optical frequency mobile phones; the visible light communication base station is connected with the server through a core backbone network to form a communication switching network, and the optical frequency mobile phone is connected with the visible light communication base station through a visible light communication technology; the visible light communication base station is used for realizing the convergence and forwarding functions of visible light communication and allowing the random access of the optical frequency mobile phone and the mobile switching among different visible light communication base stations; the server is used for carrying out management control on communication; the optical frequency mobile phone is used for establishing interactive communication with other optical frequency mobile phones, intelligent terminals and external networks; the invention realizes the wireless mobile communication of the visible light communication technology in the area by combining the visible light communication technology with the wireless mobile communication technology.
Description
Technical Field
The invention relates to the technical field of optical mobile communication, in particular to a mobile communication network system based on a visible light communication technology.
Background
The visible light communication technology modulates signals by using the characteristics of fast switching and easy modulation of a light emitting diode device (LED) to emit high-speed modulated optical carrier signals which cannot be perceived by human eyes and enable the signals to freely propagate in the air, and then receives the optical carrier signals by using photoelectric conversion devices such as a Photodiode (PD) and the like, demodulates and obtains information. The system made by the technology can realize the communication of the LED illuminating lamp and realize the coverage of an indoor communication network by using the light, thereby having wide development prospect.
The existing visible light communication system has unreasonable networking structure and poor safety performance, and can not reliably meet the regional mobile communication networking requirements.
Disclosure of Invention
The present invention aims to provide a mobile communication network system based on visible light communication technology, which aims at overcoming the defects in the prior art.
The purpose of the invention is realized by the following technical scheme: a mobile communication network system based on visible light communication technology comprises a core backbone network, a server, a plurality of visible light communication base stations and a plurality of optical frequency mobile phones;
the visible light communication base station is connected with the server through a core backbone network to form a communication switching network, and the optical frequency mobile phone is connected with the visible light communication base station through a visible light communication technology; the visible light communication base station is used for realizing the convergence and forwarding functions of visible light communication and allowing the random access of the optical frequency mobile phone and the mobile switching among different visible light communication base stations; the server is used for carrying out management control on communication; the optical frequency mobile phone is used for establishing interactive communication with other optical frequency mobile phones, intelligent terminals and external networks;
the visible light communication base station comprises a power supply module A, LED transmitting array A, PD receiving array A, a communication processing module A, an uplink receiving processing module, a downlink sending control module and a network interface module; the power supply module A is used for supplying power to the communication processing module A, the downlink sending control module, the uplink receiving processing module, the LED emitting array A and the PD receiving array A; the communication processing module A is used for processing the received signal and outputting a processing result; the communication processing module A is connected with the LED transmitting array A through a downlink transmitting control module, and the communication processing module A is connected with the PD receiving array A through an uplink receiving processing module; the communication processing module A is connected with the network interface module; the downlink transmission control module is used for modulating the signal sent by the communication processing module A and then controlling the LED transmitting array A to send a downlink high-speed modulation optical carrier signal; the uplink receiving processing module is used for demodulating an uplink high-speed modulation optical carrier signal sent by the received optical frequency mobile phone and then sending the demodulated uplink high-speed modulation optical carrier signal to the communication processing module A; the network interface module is connected with the core backbone network and is used for establishing communication connection between the communication processing module A and the core backbone network;
the optical frequency mobile phone comprises a power module B, LED transmitting array B, PD receiving array B, a communication processing module B, an uplink transmitting control module, a downlink receiving processing module and a smart phone; the power supply module B is used for supplying power to the communication processing module B, the uplink sending control module, the downlink receiving processing module, the LED emitting array B and the PD receiving array B; the communication processing module B is used for processing signals and outputting processing results, the communication processing module B is connected with the LED transmitting array B through an uplink transmitting control module, the communication processing module B is connected with the PD receiving array B through a downlink receiving processing module, and the communication processing module B is connected with the smart phone; the uplink sending control module is used for modulating the signal sent by the communication processing module B and then controlling the LED emitting array B to send an uplink high-speed modulation optical carrier signal; and the downlink receiving processing module is used for demodulating the downlink high-speed modulation optical carrier signal sent by the received optical frequency base station and then sending the demodulated downlink high-speed modulation optical carrier signal to the communication processing module B.
The invention is further set that the arrangement distance of the visible light communication base stations is 0.7-1.1 times of the height of the visible light communication base stations from the indoor ground plane.
The invention is further provided that the power supply module A adopts AC220V power supply for power supply.
The invention is further configured such that the visible light communication technique comprises an FDD mode and a TDD mode.
The invention is further arranged such that the core backbone network is networked based on ethernet technology or on power line transmission technology.
The invention has the beneficial effects that: the invention realizes the wireless mobile communication of the visible light communication technology in the area by combining the visible light communication technology with the wireless mobile communication technology. The system is suitable for scenes with confidential communication requirements, cannot generate the problem of radio communication signal leakage, and can effectively prevent information from being intercepted by malicious users. The method is also suitable for communication in an area sensitive to electromagnetic signals, and can effectively avoid the interference of the electromagnetic signals to instruments or wireless signals because the electromagnetic signals are not generated. The system can carry out mobile communication, support the switching of different coverage cells, meet the networking requirements in the area, support the access of multiple terminals, is suitable for constructing a wireless communication system which is regional, free of electromagnetic radiation and electromagnetic leakage and has wide popularization prospect.
Drawings
The invention is further illustrated by means of the attached drawings, but the embodiments in the drawings do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be derived on the basis of the following drawings without inventive effort.
FIG. 1 is a topology diagram of the present invention;
FIG. 2 is a schematic block diagram of an optical communication base station in the present invention;
fig. 3 is a schematic block diagram of an optical frequency handset in accordance with the present invention.
Detailed Description
The invention is further described with reference to the following examples.
As shown in fig. 1, the mobile communication network system based on the visible light communication technology in this embodiment includes a core backbone network, a server, a plurality of visible light communication base stations, and a plurality of optical frequency handsets;
the visible light communication base station is connected with the server through a core backbone network to form a communication switching network, and the optical frequency mobile phone is connected with the visible light communication base station through a visible light communication technology so as to realize interconnection and intercommunication of all the optical frequency mobile phones; the visible light communication base station takes a wireless frame as a basic unit to carry out data transmission, and the transmitted information comprises a synchronous channel, a broadcast channel, a control channel data service channel and the like.
The visible light communication base station is used for realizing the convergence and forwarding functions of visible light communication and allowing the random access of the optical frequency mobile phone and the mobile switching among different visible light communication base stations; the server runs management control application software designed for the optical frequency mobile communication system, and is a data exchange center and a communication management control center of the communication system; the optical frequency mobile phone is used for establishing interactive communication with other optical frequency mobile phones, intelligent terminals and external networks; the optical frequency mobile phone runs communication application software designed for an optical frequency mobile communication system, and supports functions of voice call, video call, instant messaging, group communication, user positioning and the like.
As shown in fig. 2, the visible light communication base station includes a power module A, LED, a transmitting array A, PD receiving array a, a communication processing module a, an uplink receiving processing module, a downlink transmitting control module, and a network interface module; the power supply module A is used for supplying power to the communication processing module A, the downlink sending control module, the uplink receiving processing module, the LED emitting array A and the PD receiving array A; the communication processing module A is used for processing the received signal and outputting a processing result; the communication processing module A is connected with the LED transmitting array A through a downlink transmitting control module, and the communication processing module A is connected with the PD receiving array A through an uplink receiving processing module; the communication processing module A is connected with the network interface module; the downlink transmission control module is used for modulating the signal sent by the communication processing module A and then controlling the LED transmitting array A to send a downlink high-speed modulation optical carrier signal; the uplink receiving processing module is used for demodulating an uplink high-speed modulation optical carrier signal sent by the received optical frequency mobile phone and then sending the demodulated uplink high-speed modulation optical carrier signal to the communication processing module A; the network interface module is connected with the core backbone network and is used for establishing communication connection between the communication processing module A and the core backbone network;
as shown in fig. 3, the optical frequency mobile phone includes a power module B, LED, a transmitting array B, PD, a receiving array B, a communication processing module B, an uplink transmitting control module, a downlink receiving processing module, and a smart phone; the power supply module B is used for supplying power to the communication processing module B, the uplink sending control module, the downlink receiving processing module, the LED emitting array B and the PD receiving array B; the communication processing module B is used for processing signals and outputting processing results, the communication processing module B is connected with the LED transmitting array B through an uplink transmitting control module, the communication processing module B is connected with the PD receiving array B through a downlink receiving processing module, and the communication processing module B is connected with the smart phone; the uplink sending control module is used for modulating the signal sent by the communication processing module B and then controlling the LED emitting array B to send an uplink high-speed modulation optical carrier signal; and the downlink receiving processing module is used for demodulating the downlink high-speed modulation optical carrier signal sent by the received optical frequency base station and then sending the demodulated downlink high-speed modulation optical carrier signal to the communication processing module B.
In the mobile communication network system based on the visible light communication technology, the layout distance of the plurality of visible light communication base stations is 0.7-1.1 times of the height of the visible light communication base stations from an indoor ground plane.
In the mobile communication network system based on the visible light communication technology, the power module a uses an AC220V power supply to supply power.
In the mobile communication network system based on the visible light communication technology in this embodiment, the visible light communication technology includes an FDD mode and a TDD mode.
In the mobile communication network system based on the visible light communication technology in this embodiment, the core backbone network is networked based on an ethernet technology or a power line transmission technology. The specific network construction adopts a network or a power line, and the network or the power line is converged by a router, a switch, a power modem and the like.
In practical application, a plurality of visible light communication base stations can be arranged at the top of a building room, and the arrangement distance of the visible light communication base stations is 0.7-1.1 times of the height from the visible light communication base stations to an indoor ground plane. Each visible light communication base station is powered by an alternating current 220V power supply and is connected with a server through an internal local area network. The database of the server stores the installation position of each visible light communication base station. Optical frequency handsets need to be used within the range of visible light communication base station illumination. After the optical frequency mobile phone is started up and communication application software is started, firstly, downlink signals of the visible light communication base station are searched, information of the visible light communication base station is further acquired after a synchronous state is acquired, after the communication application software acquires the information of the visible light base station from an optical frequency mobile phone baseband, a login authentication request is initiated to a server through an uplink random access channel, the server matches authentication authorities according to the authentication request information, and if authentication is successful, the server returns confirmation information to the visible light communication base station and the optical frequency mobile phone to allow the optical frequency mobile phone to be accessed. Specifically, after the visible light communication base station acquires the confirmation message of the server, the visible light communication base station allocates a wireless resource to the optical frequency mobile phone which has successfully logged in and authenticated, and the optical frequency mobile phone completes the network access operation, thereby realizing all functions. The optical frequency mobile phone can obtain downlink signals of a plurality of visible light communication base stations in the mobile communication process, when the downlink signals reach the edge of the coverage range of the visible light communication base stations, the visible light communication base station with the best signal quality is selected and switched into a new visible light communication base station through a preset cell switching rule, and therefore wireless resources can be obtained when an old visible light communication base station leaves and enters a new visible light communication base station cell. And if the authentication fails, the server returns an error message to the optical frequency mobile phone to reject the access of the optical frequency mobile phone.
After the optical frequency mobile phone is accessed to the visible light communication base station, the address list can be automatically synchronized from the server. The user can establish communication with the user by selecting any contact person in the address list. The communication service provided by the optical frequency mobile phone comprises the following steps: voice call, visual call, instant messaging, group communication. The optical frequency mobile phone periodically reports connection information to the accessed visible light communication base station, and the server realizes the positioning of the optical frequency mobile phone by searching the position information of the visible light communication base station in the database.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (5)
1. A mobile communication network system based on visible light communication technology is characterized in that: the system comprises a core backbone network, a server, a plurality of visible light communication base stations and a plurality of optical frequency mobile phones;
the visible light communication base station is connected with the server through a core backbone network to form a communication switching network, and the optical frequency mobile phone is connected with the visible light communication base station through a visible light communication technology;
the visible light communication base station comprises a power supply module A, LED transmitting array A, PD receiving array A, a communication processing module A, an uplink receiving processing module, a downlink sending control module and a network interface module; the power supply module A is used for supplying power to the communication processing module A, the downlink sending control module, the uplink receiving processing module, the LED emitting array A and the PD receiving array A; the communication processing module A is used for processing the received signal and outputting a processing result; the communication processing module A is connected with the LED transmitting array A through a downlink transmitting control module, and the communication processing module A is connected with the PD receiving array A through an uplink receiving processing module; the communication processing module A is connected with the network interface module; the downlink transmission control module is used for modulating the signal sent by the communication processing module A and then controlling the LED transmitting array A to send a downlink high-speed modulation optical carrier signal; the uplink receiving processing module is used for demodulating an uplink high-speed modulation optical carrier signal sent by the received optical frequency mobile phone and then sending the demodulated uplink high-speed modulation optical carrier signal to the communication processing module A; the network interface module is connected with the core backbone network and is used for establishing communication connection between the communication processing module A and the core backbone network;
the optical frequency mobile phone comprises a power module B, LED transmitting array B, PD receiving array B, a communication processing module B, an uplink transmitting control module, a downlink receiving processing module and a smart phone; the power supply module B is used for supplying power to the communication processing module B, the uplink sending control module, the downlink receiving processing module, the LED emitting array B and the PD receiving array B; the communication processing module B is used for processing signals and outputting processing results, the communication processing module B is connected with the LED transmitting array B through an uplink transmitting control module, the communication processing module B is connected with the PD receiving array B through a downlink receiving processing module, and the communication processing module B is connected with the smart phone; the uplink sending control module is used for modulating the signal sent by the communication processing module B and then controlling the LED emitting array B to send an uplink high-speed modulation optical carrier signal; and the downlink receiving processing module is used for demodulating the downlink high-speed modulation optical carrier signal sent by the received optical frequency base station and then sending the demodulated downlink high-speed modulation optical carrier signal to the communication processing module B.
2. A mobile communication network system based on visible light communication technology according to claim 1, characterized in that: the layout distance of the visible light communication base stations is 0.7-1.1 times of the height of the visible light communication base stations from an indoor ground plane.
3. A mobile communication network system based on visible light communication technology according to claim 1 or 2, characterized in that: the power module A is powered by an AC220V power supply.
4. A mobile communication network system based on visible light communication technology according to claim 3, characterized in that: the visible light communication technology includes an FDD mode and a TDD mode.
5. A mobile communication network system based on visible light communication technology according to claim 1, characterized in that: the core backbone network is based on the Ethernet technology or the power line transmission technology for networking.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010077895.4A CN111147140A (en) | 2020-02-01 | 2020-02-01 | Mobile communication network system based on visible light communication technology |
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| CN202010077895.4A CN111147140A (en) | 2020-02-01 | 2020-02-01 | Mobile communication network system based on visible light communication technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114157697A (en) * | 2021-12-17 | 2022-03-08 | 深圳康佳电子科技有限公司 | Intelligent network system combining visible light |
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| CN103684531A (en) * | 2013-12-02 | 2014-03-26 | 同济大学 | Power line communication and visible light communication combined system and method for optimizing cell architectures |
| CN104104440A (en) * | 2014-08-07 | 2014-10-15 | 中国人民解放军信息工程大学 | Visible light communication based indoor Femtocell networking communication system |
| CN108282228A (en) * | 2018-01-12 | 2018-07-13 | 西安电子科技大学 | Multizone dual controller layered network architecture based on indoor visible light communication |
| CN109728851A (en) * | 2017-10-31 | 2019-05-07 | 中国科学技术大学 | A kind of full duplex indoor visible light communication network system |
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2020
- 2020-02-01 CN CN202010077895.4A patent/CN111147140A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103684531A (en) * | 2013-12-02 | 2014-03-26 | 同济大学 | Power line communication and visible light communication combined system and method for optimizing cell architectures |
| CN104104440A (en) * | 2014-08-07 | 2014-10-15 | 中国人民解放军信息工程大学 | Visible light communication based indoor Femtocell networking communication system |
| CN109728851A (en) * | 2017-10-31 | 2019-05-07 | 中国科学技术大学 | A kind of full duplex indoor visible light communication network system |
| CN108282228A (en) * | 2018-01-12 | 2018-07-13 | 西安电子科技大学 | Multizone dual controller layered network architecture based on indoor visible light communication |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114157697A (en) * | 2021-12-17 | 2022-03-08 | 深圳康佳电子科技有限公司 | Intelligent network system combining visible light |
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