China Shenzhen Ofeixin Technology Co., Ltd Company News

At present, WiFi has officially entered the WiFi 6 era. With more and more intelligent devices’ application, WiFi 6 based on 2.4GHz and 5GHz frequency band has also become a hot term in the field of wireless transmission. However, with the rapid development of technology, WiFi 6e has also been officially released. Compared with WiFi 6, the progress is also a great leap forward. ▶ What is WiFi 6? When it comes to 6,For wifi1, 2, 3... peope may not be particularly clear. In 2018, the WiFi alliance decided to directly call the new generation of WiFi technology 802.11ax WiFi 6, so it replaced the previous one. Make a simple list: 802.11b — WiFi 1 (1999) 802.11a — WiFi 2 (1999) 802.11g —WiFi 3 (2003) 802.11n — WiFi 4 (2009) 802.11ac —WiFi 5 (2014) ▶ Transmission speed of WiFi 6 Here we mainly talk about its theoretical speed: 2.4Gbps(4x4 MIMO@80MHz) 4.8Gbps(8x8 MIMO@80MHz) 4.8Gbps(4x4 MIMO@160MHz） 9.6Gbps(8x8 MIMO@160MHz) According to the theoretical speed of WiFi 6 above, let's take a look at 5g; The 5g uplink peak transmission rate is 10Gbit / s and the downlink peak transmission rate is 20gbit / s. WiFi 6 has a peak rate of 600mbit / s for a single spatial stream with a bandwidth of 80MHz, and 9.6gbit/s for a bandwidth of 160MHz and 8 spatial streams. Generally speaking, the two can stand in the same echelon     ▶ New technologies added to WiFi 6 (1)MU-MIMO (faster than before) （2)OFDMA (access more devices at the same time) (3)TWT (lower power consumption and more power saving) ▶ What is WiFi 6E? After finishing WiFi 6, let's talk about its enhanced version 6E. The main difference between the two is that 6GHz frequency band is added to the original frequency band of WiFi 6, which can work in three frequency bands of 2.4GHz, 5GHz and 6GHz at the same time. The 6GHz band range is 5925-7125mhz, including 7 160MHz channels, 14 80MHz channels, 29 40MHz channels and 60 20MHz channels, greatly increasing the wireless transmission capacity. At present, for mobile phones supporting WiFi 6E, the maximum wireless speed can reach 3.6Gbps, 1200mbps faster than 2400mbps of WiFi 6, and the delay is lower. ▶ Another increase in speed and low delay     At present, according to Qualcomm's data, the maximum theoretical speed of WiFi 6E mobile phone chip is 3.6Gbps, and the maximum theoretical speed of router chip ranges from 5.4Gbps to 10.8Gbps. Moreover, the new scheme also has an ultra-low delay of less than 4 milliseconds. In a dense environment, the delay is reduced by more than 8 times. It has a lot of use space in mobile games, wireless VR and other industries. I believe that emerging applications based on WiFi 6E will come soon! Ofeixin technology is committed to providing customers with WiFi connection solutions, and WiFi 6E products will be available soon. Customers are welcome to consult or log in to Ofeixin's official website to obtain more.  

Since the launch of the PLC power line communication chip Hi3921 at the Huawei Developer Conference in August 2019, after one and a half years of industry evolution, Huawei has gone further. On December 21, Huawei officially released its smart home strategy and entire smart home solutions to promote the industry from "digital home" to "smart home", from single product and single system intelligence to whole-house integrated intelligence, which will bring consumers a full-scenario, intelligent, and high-quality life experience. In the entire smart home ALL ON ONE solution reconstructed by Huawei, PLC-IOT is used as the support of end of network integration, and the power network and narrowband communication network are integrated with PLC-IoT technology, which greatly reduces deployment costs and pipeline costs. Electrician can complete networking himself and realize unified management of equipment.As a service provider of Huawei PLC-IOT solutions, we have conducted on-site exchanges with many major industry customers, and have visited many whole-house smart showrooms. At present, the industry is mainly divided into two product camps, wired and wireless. PlC was compared with wired and wireless,we found that PLC bus technology has great potential in the field of entire smart home. Everyone here should be clear that the whole-house intelligence we are talking about means that all devices in a smart home have a unified connection standard that can be integrated with each other and managed in a unified manner, not a single smart product.Single smart products are not only troublesome to connect and network, but also cannot be interconnected. The cumbersome operation of multi-category products will also lead to fragmentation of user experience, which is necessarily not a smart home in the true sense. Based on the HiLink ecosystem, Huawei has cooperated with industry associations and many product manufacturers to establish the PLC whole house interconnection protocol specification, which is actually integrating the interface standards of different household products of various product manufacturers. Giant companies do standards and capital, large companies do strategy and tactics, medium-sized companies do business and channels, and small companies do products and technology. Through different center of gravity distribution and common goals, more and more products will use a unified standard for interconnection in the future. An era of mobile phones equipped with N multiple APPs to control different products will gradually withdraw from the trend of the times. Huawei's HiLink ecological promotion has further affected many manufacturers of smart products. Because of the advantages of PLC-IOT, smart manufacturers are also actively joining the HiLink ecosystem in the process of adding PLC to their own ecosystem to achieve interconnection. At present, lead real estate and lighting companies have released entire smart home solutions based on Hi3921 PLC. PLC products have crossed 0-1, 1-10, and 10-N will be realized in the next few years. With Huawei's technology leadership, more manufacturers will join in, apply to more industries, and blossom. In addition to the extensive use of PLC-IOT in whole houses and lighting control scenarios, it has also begun to be applied in fields such as photovoltaic filters, tunnel engineering, underground pipe networks, smart buildings, and smart fire protection. The advantages of PLC-IOT in terms of reliability, number of connections, distance, cost, etc., will bring opportunities in many fields.As a Hi3921 module manufacturer and Huawei PLC-IOT solution service provider, our company has designed a variety of PLC modules and test kits suitable for various industry applications, and shared our accumulated industry experience with many customers. It can be applied in more industries and customers and contribute to the industry.  

In August 2019, at Huawei Developer Conference, Huawei officially released the Lingxiao Series WiFi-iot chips, which are mainly used for home automation products. This is Huawei's connectivity solution for HiLink's smart home ecological strategy. With the chip’s latest technology, HiLink's ecological connections will be more stable, convenient and secure, which is the cornerstone of HiLink's ecological prosperity. As a leading manufacturer in China, we are specialized in providing customers with perfect Internet of Things connectivity solutions. The following will be a details of the WiFi Module which are based on HiSilicon WiFi chips.   1、Main Chip：Hi1131S Module No: 3131A-S     Introduction：Mainly used in battery-powered low-power IPC and smart doorbell, work with HI3518EV200/300 and based on LiteOS , it has been recognized by the market for its low power consumption, fast wake-up and excellent performance. Also 3131A-S has been in mass production and successfully applied in this field.   Main Features： Support IEEE 802.11b/g/n 2.4GHz support 150 Mbps in 20/40 MHZ mode Support WLAN SDIO interface Enterprise level security which can apply WPA/WPA2 certification for WiFi Operating Temperature：-30~70°C Low power dissipation   2、Main Chip：Hi3861LV100 Module No: 3161A-SL/3161H-IL     Instruction：3161A-SL is an upgrade version of 3131A-S with a wider range of applications,mainly applied in the fields of battery-powered low-power IPC, smart doorbell and smart home.   In the field of low-power video door bell and IPC, Hi3861L is worked with Hi3518EV300 to operate in LiteOS dual mode (WIFI and CPU are both based on LiteOS ). Hi3861L has a rich interface for external sensors. With an embedded MCU and power management unit, it can reach Rapid Wake and lower power consumption. Meanwhile, it simplifies product design and is conducive to rapid product development. 3161H-IL can be directly used in battery-powered low-power door locks and other smart home products.                         Main Features： Support IEEE 802.11b/g/n 2.4GHz support 72.2 Mbps in 20MHZ mode Support standard 20MHz nd 5M/10M narrow broadband, support STBC Support SDIO,SPI,I2C,UART,I2S,PWM,ADC,GPIO interfaces Module integrated 32K clock WFA WPA, WFA WPA2 personal, and WPS2.0 for Wi-Fi Built-in 352 KB SRAM and 288 KB ROM Main chipset Built-in 32bit MCU and 2 MB flash memory Operating Temperature：-40~85°C Low power dissipation   3、Main Chip：Hi3861 Module No: 3161H-I     Introduction：Hi3861 is WIFI-IOT chip, which is mainly used in the normally power supply smart home, such as white goods, home appliances, and electrical products.                             Main Features： Support IEEE 802.11b/g/n 2.4GHz support 72.2 Mbps in 20MHZ mode Support standard 20MHz nd 5M/10M narrow broadband, support STBC Support SDIO,SPI,I2C,UART,I2S,PWM,ADC,GPIO interfaces Module integrated 32K clock

Before we talk the SDIO WiFi Module, let's take a quick look at the SDIO, which literally means the I/O interface of SD. SD itself is the standard for memory cards, but now we plug SD into some of the peripheral interfaces , and from that comes what we called the SDIO. It can also be said that SDIO is an interface developed on the basis of SD card. It is not only compatible with previous SD CARDS, but also can connect the external periphery through the I/O pin of SD and transmit data to these periphery through the I/O data bit on SD.   So SDIO WiFi Module, which is simply an embedded module based on the SDIO interface and compatible with wireless network standards. The built-in wireless network protocol IEEE802.11 and TCP/IP protocol stack can realize the conversion of user's main platform data from SDIO port to wireless network. Due to its fast transmission speed and good compatibility, it is widely used in all kinds of wireless smart devices. Now let's take a look at some of popular models in applications:   1.3131A-S, it is based on Hisilicon 802.11n video transmission IOT chipset Hi1131S, it supports ultra low power consumption.The data rate in WIFI 1T1R N mode is up to 150 Mbps. It had to be based on LiteOS and be worked with Hisilicon CPU, the major applications are doorbell and IP Camera. Currently, the solution of Hi3518EV20X/Hi3518EV300+Hi1131S directly accounts for more than half in low-power IPC products, and its high definition and stability have been unanimously recognized by various manufacturers all over the world.       2.3181A-S, it based on Hisilicon Hi3881 chipset, the RF performance is basically same as Hi1131S, but it can support LiteOS or Linux, which greatly simplifies the LiteOS inexperienced engineers and reduces the debugging time and development cycle. At present, the main applications included IPC and set-top box.     3.3161A-SL，it is based on Hisilicon Hi3861L chipset, it also inherits the RF performance of Hi1131S, but part of MCU subsystem is optional, which greatly reduces the software and hardware development and improves the convenience of debugging. The major applications will be low-power smart scenes (battery smart devices, such as locks, sensors, etc.) and video scenes (battery IPC).                                                                                           4.6222B-SRC, it is based on Realtek RTL8822CS chipset, for our previous upgrade of RTL8822BS, supports IEEE 802.11 a/b/g/n/ac + Bluetooth V5.0, WiFi 2T2R AC mode data rate up to 867 Mbps, compared to the previous RTL8822BS not only performance optimization, in the same market competition, cost advantage is more obvious. It is most applied for the Set Top Box, Tablet and other video transmission of high speed smart devices.                                       5.8274B-SR, it is based on Qualcomm QCA6174A-3 chipset, the performance is similar as 6222B-SRC. In previous articles we specifically mentioned the comparison between these two, they both support MU-MIMO. The big difference is that the operating temperature is more wider, which is particularly important in some industrial grade applications or complex environments.       In addition to the above mentioned based on Hisilicon/Realtek/Qualcomm SDIO WiFi module, as well as based on MTK same ones. Whether it's 2.4 G WiFi or 2.4 G / 5.8 G dual-band WiFi, we have enough market experience and technology accumulation, to provide customers with perfect IOT solutions, more details welcome to visit our website OFLYCOMM.

With the development of wireless transmission technology, high-definition wireless HDMI extender products have begun to be applied to various scenes in life. It is widely used for home high-definition video images at the same frequency, in classroom education and conference office, as a courseware display and enterprise information display, or as a camera and other devices, the HDMI high-definition picture is wirelessly transmitted to the corresponding device for recording and broadcasting.After getting rid of the connection of the wired connection, the wireless projection screen is more convenient to use.   Wireless screencast can transmit images in real time and transmit the images to the required devices in time, providing a very convenient experience for users with different needs. In the past few years, a large number of wireless HDMI extender products have emerged on the market, but in the complex environment and long distance, 2.4G is used for transmission. Because of 2.4G interference, the quality of image transmission is greatly declined. With the 802.11 5.8g gradually becoming the mainstream in recent years, the cost of the wireless module, which is the core component of the wireless projection screen product, is greatly reduced, which makes the related wireless HDMI extender products continue to be innovated, making it suitable for various subdivisions, wireless HDMI extender can be said to have a bright future.   Oflycomm specially developed the 8121N-UH module for the wireless picture transmission field, adopting Qualcomm chip, dual antenna design, adopting 802.11 5.8G frequency band to avoid signal interference of 2.4G frequency band, power up to 19dBm (54M*2), excellent in all aspects of distance and penetration, suitable for wireless HDMI extender, long-distance wireless transmission and other fields.   At present, the performance of the market is stable, and the mainstream products with excellent transmission quality and speed generally adopt the Hisilicon main chip , and use H.264 encoding to transmit high-definition audio and video below 1080P. However, the main chip using H.265 encoding is equipped with 8121N-UH module to transmit 4K audio and video. With the increase of 4K sources, 4K wireless HDMI extender products will also become mainstream.   Due to different solutions or designs, product cost and performance will be quite different. Oflycomm has been committed to providing and assisting customers to optimize product RF solutions.    .

After wifi embedded applications in the industry in recent years, for the large area of ​​video and other code streams, the bandwidth requirements are relatively high, because of the IEEE 802.11ac standard, the next application for Realtek's 11ac standard wifi module Reference analysis: F11AUUM23-W1 is an RTL8811AU chip, size 23.0*17.0mm, package is LGA-9, power supply voltage DC 3V3, antenna through ANT pin extension or I-pex block external connection, 1T1R single channel maximum transmission rate up to 433.3Mbps , in line with IEEE 802.11a/b/g/n/ac standard, USB interface dual-band WiFi module; F21AUUM13-W1 is an RTL8821AU chip, size 19.0*17.1mm, package is LGA-12, power supply voltage DC 3V3, antenna through ANT pin extension or I-pex block external connection, 1T1R single channel maximum transmission rate up to 433.3Mbps , in accordance with IEEE 802.11a/b/g/n/ac + BT4.0 standard, USB interface (WiFi) / (BT) high-performance dual-band Bluetooth WiFi combo module; 6221A-SRC is a RTL8821CS chip (compatible with 8223A-SR), size 12.0*12.0mm, package is LGA-44, power supply voltage DC 3V3, antenna extends through ANT pin, 1T1R single channel maximum transmission rate up to 433.3Mbps , in line with IEEE 802.11a/b/g/n/ac + BT4.1 standard, SDIO interface (WiFi) / Uart interface (BT) high-performance dual-band Bluetooth WiFi combo module; hardware compatible with AP6330 (BCM4330X solution) , AP6234 (BCM43340 solution), AP6255 (BCM43455 solution), AP6335 (BCM4339 solution); 6221E-UUC is a RTL8821CU chip, size 12.2*13mm, package is LGA-14, power supply voltage DC 3V3, antenna through ANT pin extension or I-pex socket external connection, 1T1R single channel maximum transmission rate up to 433.3Mbps, Compliant with IEEE 802.11a/b/g/n/ac + BT4.2 standard, USB interface (WiFi) / (BT) high performance dual-band Bluetooth WiFi combo module; 6221C-PUC is a RTL8821CE chip, size 12*16mm/with shield, package is LGA-32, power supply voltage DC 3V3, antenna through I-pex external connection, 1T1R dual channel maximum transmission rate up to 433Mbps, in line with IEEE 802.11a/b/g/n/ac + BT4.2 standard, PCI-e interface (WiFi) / USB interface (BT) high-performance dual-band Bluetooth WiFi combo module; 6222D-UUB is a RTL8822BU (compatible 8279D-UU), size 27*18mm, package is LGA-12, power supply voltage DC 3V3, antenna extends through ANT pin, 2T2R dual channel maximum transmission rate up to 867Mbps, in line with IEEE 802.11a/b/g/n/ac + BT4.2 standard, USB interface (WiFi) / (BT) high-performance dual-band Bluetooth WiFi combo module; hardware compatible with AP6269LV (BCM4356 solution); 6222B-SRB is an RTL8822BS chip (compatible with 8274B-SR), size 15.0*13.0mm, package is LGA-50, power supply voltage DC 3V3, antenna extends through ANT pin, 2T2R dual channel maximum transmission rate up to 867Mbps, Compliant with IEEE 802.11a/b/g/n/ac + BT4.2 standard, SDIO interface (WiFi) / Uart interface (BT) high performance dual-band Bluetooth WiFi combo module; 6222C-PUB is a RTL8822BE chip, size 12*16mm / with shield, LGA-32 package, power supply voltage DC 3V3, antenna through I-pex external connection, 2T2R dual channel maximum transmission rate up to 867Mbps, in line with IEEE 802.11a/b/g/n/ac + BT4.2 standard, PCI-e interface (WiFi) / USB interface (BT) high-performance dual-band Bluetooth WiFi combo module; 6222B-PRB is a RTL8822BEH-VR chip (compatible with 8274B-SR), size 15.0*13.0mm, package is LGA-50, power supply voltage DC 3V3, antenna extends through ANT pin, 2T2R dual channel maximum transmission rate up to 867Mbps, conforms to IEEE 802.11a/b/g/n/ac + BT4.2 standard, PCI-e interface (WiFi)/Uart interface (BT) high-performance dual-band Bluetooth WiFi 2-in-1 module; 6222Q-PRB is an RTL8822BEH-VR chip (compatible with 8274Q-PR), size 20*26mm, LGA package, power supply voltage DC 3V3, antenna through I-pex external connection, high power 2T2R dual channel maximum transmission rate up to 867Mbps , in line with IEEE 802.11a/b/g/n/ac + BT4.2 standard, PCI-e interface (WiFi) / Uart interface (BT) high-performance dual-band Bluetooth WiFi combo module; The same size, the same RTL8811AU, RTL8821AU, RTL8821CS, RTL8821CU, RTL8822CU, RTL8822BU, RTL8822BS, RTL8822BE, RTL8822BEH-VR chip solution, different module manufacturers have their own models, there is model compatibility.