After breaking through the technical bottleneck, LED visible light communication and XGPON network have quickly attracted the attention of the market. The former can realize zero electromagnetic wave wireless transmission and add new value to LED lighting system; the latter can provide network transmission speed of up to 10Gbit/s. It will help accelerate the popularity of fiber-to-the-home (FTTH). LED visible light communication and XGPON network will be available next year.
The Pandora's box of future communication technology has finally opened. ITRI ​​has developed a new LED visible light communication technology and XGPON network. The former uses LED visible light as a transmission medium, and users can carry on the Internet and video and audio transmission; the latter can achieve 100Mbit/s fiber to the government, and the technical achievements are very bright. eye. On the other hand, the next-generation Bluetooth 4.x standard will be finalized next year to attack smart home business opportunities.
Networking / multi-streaming is suitable for LED visible light communication
In the future, using LED lighting to access the Internet or to transfer video and audio files will become a reality. ITRI ​​has developed LED visible light communication (VLC) technology, which enables LED lamps to simultaneously achieve illumination, networking or multi-gray high-definition (HD) video and audio transmission. It is expected to be commissioned in Shin Kong Hospital next year, adding LEDs. Lighting application value.
Ye Jianhong, a researcher at the Optical Communication Network Technology Department of the Institute of Industrial Communications, Optical Communication and Broadband Integration Technology Group, said that wireless local area networks (Wi-Fi) or other wireless transmissions have electromagnetic waves that may endanger human health or interfere with the operation of electronic equipment. The LED visible light is a zero-electromagnetic, zero-radiation wireless technology that can function in places where other wireless transmissions cannot be used, such as hospitals.
Not only that, because the LED visible light communication must be transmitted when the LED light fixture is turned on, the transmission function will be invalid when the light is turned off, and the light can not be transmitted as long as the curtain light is pulled out, which has the characteristics of a closed network, so the network security level It is higher than other wireless transmission technologies and is also suitable for home use.
In addition, LED visible light communication technology can also be extended in the car brake system. Driving can send the brakes to the rear lights of the vehicles in front by LED lights, which will further control the driving safety.
It is understood that the Institute currently uses white light phosphor powder (Phosphor) LED to achieve LED visible light communication technology, its transmission rate is 1/2Mbit / s, transmission distance is 2 / 3 meters; at this stage, ITRI has developed light Transceiver modules, as well as modulation signals, digital signal processing and lens focusing and emission techniques.
Ye Jianhong explained that the operation mode of LED visible light communication is to embed an optical transceiver module in the LED lamp, and to construct or externally connect the corresponding optical transceiver module in the receiving end device such as a notebook, a smart TV or a smart phone. In order to achieve two-way communication and receiving functions.
Ye Jianhong further explained that the initial optical transceiver module introduced at the customer premises device will be externally connected, and the LED visible light communication system that will be piloted in the Shin Kong Hospital ward will be Ethernet (Ethernet). Or a power line communication (PLC) network route to connect the optical communication module, so that the wireless transmission mode can be used to access the Internet and perform multi-fire transmission information.
In the future, ITRI will also develop a universal serial bus (USB) as the interface between the optical receiver module and the client device, making it easier for users to use the LED visible light communication to access the Internet or transmit audio and video.
Ye Jianhong emphasized that the ITRI plans to process red, green and blue (RGB) three-light hybrid white LEDs or other LEDs with a bandwidth that is seven to eight times higher than white LEDs in 2/3 years, and then through modulation and digital signal processing. Technology, the LED visible light communication system speed is upgraded to 100Mbit / s, to meet the needs of the home market for high-bandwidth networking, and thus drive the construction boom of the home LED lighting market.
As for the technical transfer mode of ITRI and related manufacturers, Liu Yanliang, an engineer of the optical communication network technology department of the Optical Communication and Broadband Integration Technology Group of the Institute of Industrial and Commercial Technology, revealed that the ITRI is expected to design the optical transceiver module for the module factory. For the orthogonal frequency division multiplexing (OFDM) chip maker or Netcom system plant technology transfer technology, and the latter will be the role of integrated lighting, module, and promote the LED visible light communication system to the user.
In response to high-frequency transmission requirements, 10GPON realizes optical fiber 100M
Faced with the rapid progress of LED visible light communication technology, the fiber network will soon be upgraded to XGPON. In response to the gradual popularization of Chunghwa Telecom's 100Mbit/s fiber-to-the-home (FTTH) network, ITRI has launched the XGPON solution, which has been adopted by several Netcom plants or chip vendors. It is expected that XGPON room-side routers (OLTs) and users will be adopted. The end data unit (ONU) will be produced in small quantities by the end of next year.
Wu Ruiting, technical assistant of the Optical Communication Network Technology Department of the Institute of Industrial and Scientific Research, said that the next generation of home audio and video equipment, smart TV, naked-view three-dimensional (3D) TV or ultra-high-definition (UHD) TV have come out one after another, and Chunghwa Telecom estimates 100Mbit. The network coverage of /s fiber to the whole station will reach 70% at the end of this year and 85% next year. Therefore, ITRI has stepped up development of XGPON solutions to cope with the development of the market trend.
At the same time, the demand for high-frequency audio and video transmission applications is increasing. However, with the existing 2.5GPON network, an OLT can only connect thirty-two ONUs, and the future bandwidth will not be enough, so ITRI By introducing an XGPON solution with an OLT that can connect 128 ONUs to provide uplink 10Gbit/s and downlink 2.5Gbit/s bandwidth, it will meet the needs of new state-of-the-art audio and video applications.
It is understood that ITRI's XGPON solution includes OLT network management software, ONU chip, the entire ONU hardware platform, and IEEE 1588v2 module that provides global microwave interworking access interface (WiMAX) base station synchronization signals; The OLT partner of the institute is ALU, and the ONU partners include ZTE, Huawei, Fiberhome, Broadcom and PMC.
It is worth noting that since last year, ITRI has conducted two interoperability tests (IoT) with six manufacturers. It is expected that after one or two interoperability tests this year, chips, OLTs and ONUs of various manufacturers will be listed one after another. .
Lin Yicheng, an engineer of the Optical Communication Network Technology Department of the Institute of Industrial and Commercial Affairs, is not arguing that since the ONU wafer of the Institute of Technology and the OLT chip of the factory are different in stacking, the interoperability test will still face challenges in the future. Decryption, protection mechanisms, energy-saving functions, and management's command communication must be resolved.
Wu Ruiting pointed out that the chips introduced by various manufacturers will be based on application-specific integrated circuits (ASICs). The price of OLT and ONU for XGPON is estimated to increase by 50% compared with 2.5GPON. XGPON layout manufacturers, in addition to the six manufacturers interoperating with the Institute of Industrial and Technological Studies, the future also includes the chip business Yichuan and Netcom plant Dongxun, etc., will also join the XGPON battle, and jointly expand the market size.
(This article is reproduced on the Internet. The texts and opinions expressed in this article have not been confirmed by this site, nor do they represent the position of Gaogong LED. Readers need to verify the relevant content by themselves.)
The Pandora's box of future communication technology has finally opened. ITRI ​​has developed a new LED visible light communication technology and XGPON network. The former uses LED visible light as a transmission medium, and users can carry on the Internet and video and audio transmission; the latter can achieve 100Mbit/s fiber to the government, and the technical achievements are very bright. eye. On the other hand, the next-generation Bluetooth 4.x standard will be finalized next year to attack smart home business opportunities.
Networking / multi-streaming is suitable for LED visible light communication
In the future, using LED lighting to access the Internet or to transfer video and audio files will become a reality. ITRI ​​has developed LED visible light communication (VLC) technology, which enables LED lamps to simultaneously achieve illumination, networking or multi-gray high-definition (HD) video and audio transmission. It is expected to be commissioned in Shin Kong Hospital next year, adding LEDs. Lighting application value.
Ye Jianhong, a researcher at the Optical Communication Network Technology Department of the Institute of Industrial Communications, Optical Communication and Broadband Integration Technology Group, said that wireless local area networks (Wi-Fi) or other wireless transmissions have electromagnetic waves that may endanger human health or interfere with the operation of electronic equipment. The LED visible light is a zero-electromagnetic, zero-radiation wireless technology that can function in places where other wireless transmissions cannot be used, such as hospitals.
Not only that, because the LED visible light communication must be transmitted when the LED light fixture is turned on, the transmission function will be invalid when the light is turned off, and the light can not be transmitted as long as the curtain light is pulled out, which has the characteristics of a closed network, so the network security level It is higher than other wireless transmission technologies and is also suitable for home use.
In addition, LED visible light communication technology can also be extended in the car brake system. Driving can send the brakes to the rear lights of the vehicles in front by LED lights, which will further control the driving safety.
It is understood that the Institute currently uses white light phosphor powder (Phosphor) LED to achieve LED visible light communication technology, its transmission rate is 1/2Mbit / s, transmission distance is 2 / 3 meters; at this stage, ITRI has developed light Transceiver modules, as well as modulation signals, digital signal processing and lens focusing and emission techniques.
Ye Jianhong explained that the operation mode of LED visible light communication is to embed an optical transceiver module in the LED lamp, and to construct or externally connect the corresponding optical transceiver module in the receiving end device such as a notebook, a smart TV or a smart phone. In order to achieve two-way communication and receiving functions.
Ye Jianhong further explained that the initial optical transceiver module introduced at the customer premises device will be externally connected, and the LED visible light communication system that will be piloted in the Shin Kong Hospital ward will be Ethernet (Ethernet). Or a power line communication (PLC) network route to connect the optical communication module, so that the wireless transmission mode can be used to access the Internet and perform multi-fire transmission information.
In the future, ITRI will also develop a universal serial bus (USB) as the interface between the optical receiver module and the client device, making it easier for users to use the LED visible light communication to access the Internet or transmit audio and video.
Ye Jianhong emphasized that the ITRI plans to process red, green and blue (RGB) three-light hybrid white LEDs or other LEDs with a bandwidth that is seven to eight times higher than white LEDs in 2/3 years, and then through modulation and digital signal processing. Technology, the LED visible light communication system speed is upgraded to 100Mbit / s, to meet the needs of the home market for high-bandwidth networking, and thus drive the construction boom of the home LED lighting market.
As for the technical transfer mode of ITRI and related manufacturers, Liu Yanliang, an engineer of the optical communication network technology department of the Optical Communication and Broadband Integration Technology Group of the Institute of Industrial and Commercial Technology, revealed that the ITRI is expected to design the optical transceiver module for the module factory. For the orthogonal frequency division multiplexing (OFDM) chip maker or Netcom system plant technology transfer technology, and the latter will be the role of integrated lighting, module, and promote the LED visible light communication system to the user.
In response to high-frequency transmission requirements, 10GPON realizes optical fiber 100M
Faced with the rapid progress of LED visible light communication technology, the fiber network will soon be upgraded to XGPON. In response to the gradual popularization of Chunghwa Telecom's 100Mbit/s fiber-to-the-home (FTTH) network, ITRI has launched the XGPON solution, which has been adopted by several Netcom plants or chip vendors. It is expected that XGPON room-side routers (OLTs) and users will be adopted. The end data unit (ONU) will be produced in small quantities by the end of next year.
Wu Ruiting, technical assistant of the Optical Communication Network Technology Department of the Institute of Industrial and Scientific Research, said that the next generation of home audio and video equipment, smart TV, naked-view three-dimensional (3D) TV or ultra-high-definition (UHD) TV have come out one after another, and Chunghwa Telecom estimates 100Mbit. The network coverage of /s fiber to the whole station will reach 70% at the end of this year and 85% next year. Therefore, ITRI has stepped up development of XGPON solutions to cope with the development of the market trend.
At the same time, the demand for high-frequency audio and video transmission applications is increasing. However, with the existing 2.5GPON network, an OLT can only connect thirty-two ONUs, and the future bandwidth will not be enough, so ITRI By introducing an XGPON solution with an OLT that can connect 128 ONUs to provide uplink 10Gbit/s and downlink 2.5Gbit/s bandwidth, it will meet the needs of new state-of-the-art audio and video applications.
It is understood that ITRI's XGPON solution includes OLT network management software, ONU chip, the entire ONU hardware platform, and IEEE 1588v2 module that provides global microwave interworking access interface (WiMAX) base station synchronization signals; The OLT partner of the institute is ALU, and the ONU partners include ZTE, Huawei, Fiberhome, Broadcom and PMC.
It is worth noting that since last year, ITRI has conducted two interoperability tests (IoT) with six manufacturers. It is expected that after one or two interoperability tests this year, chips, OLTs and ONUs of various manufacturers will be listed one after another. .
Lin Yicheng, an engineer of the Optical Communication Network Technology Department of the Institute of Industrial and Commercial Affairs, is not arguing that since the ONU wafer of the Institute of Technology and the OLT chip of the factory are different in stacking, the interoperability test will still face challenges in the future. Decryption, protection mechanisms, energy-saving functions, and management's command communication must be resolved.
Wu Ruiting pointed out that the chips introduced by various manufacturers will be based on application-specific integrated circuits (ASICs). The price of OLT and ONU for XGPON is estimated to increase by 50% compared with 2.5GPON. XGPON layout manufacturers, in addition to the six manufacturers interoperating with the Institute of Industrial and Technological Studies, the future also includes the chip business Yichuan and Netcom plant Dongxun, etc., will also join the XGPON battle, and jointly expand the market size.
(This article is reproduced on the Internet. The texts and opinions expressed in this article have not been confirmed by this site, nor do they represent the position of Gaogong LED. Readers need to verify the relevant content by themselves.)
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