Relay node and relay-supporting visible light information transmission method and system

A relay node and relay-supporting technology, applied in free space transmission, short-distance systems, etc., can solve problems such as unproposed solutions, achieve the effect of increasing visible light communication coverage, avoiding loss, and increasing visible light communication rate

Inactive Publication Date: 2014-12-17
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the above-mentioned situation of using visible light communication for information transmission, there are also scenarios where visible light communication rate limitation and coverage limitation need to use relay technology. However, for this situation, no specific solution has been proposed so far.

Method used

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  • Relay node and relay-supporting visible light information transmission method and system
  • Relay node and relay-supporting visible light information transmission method and system
  • Relay node and relay-supporting visible light information transmission method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0097] The structure of the relay node is as follows: image 3 As shown, the receiving unit receives the visible light signal, processes the signal through the first baseband processing unit, forwards it to the processor, and the processor forwards it to the second baseband processing unit, and then forwards it to the sending unit after being modulated by the light modulation unit. When the transmission rate of information flow between the terminal node of visible light communication and the relay node of visible light communication, and between the relay node of visible light communication and the service node of visible light communication is inconsistent, store the high-speed information flow through the data buffer unit to utilize the high-speed Information flow transmission links, low-speed link devices can complete information transmission during idle intervals.

Embodiment 2

[0099] Figure 4 The system architecture in the system includes a service node node (referred to as VS) of visible light communication, a relay node of visible light communication (referred to as RN), and a terminal node of visible light communication (referred to as UE). The information sent by the terminal node is forwarded through the relay node, and the uplink and downlink are transmitted through a single transmission path, and the communication function is completed through the forwarding of the relay node.

[0100] For each device in the system, including service nodes, relay nodes, and terminal nodes, the system pre-allocates a unique identification code for each device to identify each device. In this way, for each sending device information, the receiving device can identify which device it is currently based on the unique identification code assigned to each device, that is, the source of the information transmitted by optical signals can be distinguished according t...

Embodiment 3

[0115] Figure 5 The system architecture in the system includes a service node node (referred to as VS) of visible light communication, a relay node of visible light communication (referred to as RN), and a terminal node of visible light communication (referred to as UE). The information sent by the terminal node is forwarded through the relay node. There is a way that the terminal node sends information to the service node through the relay node and directly. That is to say, the uplink and downlink can be transmitted through two transmission paths, and the service node through two transmission paths. The information link receives / sends information, which can effectively improve communication reliability and information rate.

[0116] For each device in the system, including service nodes, relay nodes, and terminal nodes, the system pre-allocates a unique identification code for each device to identify each device. In this way, for each sending device information, the receivi...

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Abstract

The invention discloses a relay node and a relay-supporting visible light information transmission method and system. The method includes that a terminal node sends information to the detected relay node; the relay node processes the information from the terminal node and forwards the information to a server node. The relay node is used for processing the information of the terminal node in the uplink direction and forwards the information to the server node. Therefore, visible light communication coverage and visible light communication velocity can be increased by means of using visible light communication relay.

Description

technical field [0001] The present invention relates to relay technology, in particular to a relay-supporting visible light information transmission method, relay node and system. Background technique [0002] Visible light communication (VLC, Visible Light Communications) is a wireless communication technology that uses visible light with a frequency between 400THz (wavelength of 780nm) and 750THz (wavelength of 400nm) as a communication medium to complete information transmission. [0003] As a wireless access technology, visible light communication uses LED visible light signals to transmit information. The biggest feature of visible light communication is that it combines LED lighting technology known as "green lighting", which provides high-speed information flow without electromagnetic interference while lighting. Transmission, to solve the problems of narrow frequency band and electromagnetic interference in broadband wireless systems. [0004] In the existing wirele...

Claims

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Application Information

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IPC IPC(8): H04B10/116
CPCH04B10/116
Inventor支周卢忱陈霖
OwnerZTE CORP