Who is RF-star
Wireless Creates Infinite Posibilities RF-star, as a forerunner in wireless IoT arena, has the vision of a connected world with widely deployed IoT technology, such as BLE, Wi-Fi, LoRa, ZigBee and Sub-1GHz. We engage ourselves in electronic hardware design; embedded firmware engineering; systems engineering; software + APP development; IoT cloud backend; big data; test & certification; OEM & ODM. RF-star is aimed to empower industries to run intelligently and providing people a better lifestyle. Our solutions are gradually applied in the fields -- from consumer electronics to medical electronics, automated manufacturing to smart logistics, and smart home to smart agriculture. What’s more, RF-star is highly praised by industry leaders such as Texas Instruments, Nordic Semiconductor, Silicon Labs, Realtek, ATmosic and ASR, which makes RF-star a more and more bright future. HISTORY From 2010 to 2021, we are forging ahead......
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Established in 2010, with a decade’s wireless IoT module experience, RF-star is the company that can help you to identify your project requirements, select the most suitable wireless option and achieve the success of the project.
  • 10+ YEAR Experience 10+ YEAR Experience
    RF-star has been providing wireless IoT modules for thousands of projects since 2010.
  • Better Support Better Support
    One-to-one technical supports enable the shortest lead time in design and development.
  • Quick Response Quick Response
    The profession allows us to know your needs efficiently and give technical responses quickly.
  • Support Customization Support Customization
    The module customization based on the diversification of the end-products is available.
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                                                                         RF-star 2021 Mid-Autumn Festival Activity
Sep 18, 2021 RF-star 2021 Mid-Autumn Festival Activity
When the moon hangs in the night sky, we know that the Mid-Autumn Festival is around the corner. With the strong sweet-scent of the osmanthus was waved to us by the breeze in the streets and lanes in Chengdu city, the Mid-Autumn Festival is around the corner. On the occasion of the festive season, RF-star would like to give you the best wishes here and wish you a happy festival. And on this special day, all staff of RF-star gathered here to participate in the lantern riddles and mooncake cooking activities as the celebration for the upcoming traditional Chinese Mid-Autumn Festival. Let’s enjoy this happiness and rejoice together. Years come and go, but the moon in the Mid-Autumn night remains in our hearts forever. Guessing lantern riddles is a traditional folkloric entertainment activity for the Chinese. There is infinite wisdom and fun in the little riddles. From the animal names to the names of the objects, from the person names and place names to the rivers or mountains, everything can be included in the riddles and be a question or answer, which makes the riddle bring infinite extreme fun. Look, the activity has not begun yet, everyone is eager to have a try and some people roll up their sleeves to get ready to be the first person who gives the answer. With the host announced the kickoff of the activity, one after another answer being called out with the intermingled cheers and laughter, which pushes the activity to its climax. As the guessing riddles activity comes to an end, the host unveiled to move on to another activity named ”making mooncakes”. All staff brims with full of happiness and rejoice. Sweet-style mooncakes are one of the popular styles of mooncake for Chengdu people. Take one portion from each 3 colours of dough and combine them into a round. Flatten out the dough and center the filling. Seal and shape into a ball. Lightly coat the surface with prepared cooked glutinous rice flour. Press each into mooncake mould and then push lightly out on a serving plate. Each member of RF-star is busy chit-chatting and making mooncakes, which brings pleasure and warm atmosphere. After a while, several plates of crispy and delicious mooncakes come to the table. About Us Shenzhen RF-Star Technology Co., Ltd., founded in 2010, is a world leading Internet-of-Things (IoT) solution provider. RF-Star has the vision of a connected world with widely deployed IoT technology, such as BLE/BT, Wi-Fi, LoRa, ZigBee, Sub-1GHz, NB-IoT, RFID, which makes RF-star focus on creating innovative products and services, empowering industries to run intelligently and providing people a better life.
Journey to Western Sichuan Plateau-RFstar Chengdu Team
Jun 05, 2021 Journey to Western Sichuan Plateau-RFstar Chengdu Team
RFstar Chengdu team has traveled to the #Western #Sichuan #Plateau in July. The impressive natural landscapes with snow-covered mountains, endless grass landscapes, countless yak herds, and local monasteries leave us literally speechless! #nature #team #travel
Beacon Technology Makes Indoor Positioning Easier
Oct 29, 2021 Beacon Technology Makes Indoor Positioning Easier
The IoT technology is constantly updated and iterated, and the indoor positioning technology has also undergone earth-shaking changes. From room-level positioning, decimeter-level positioning to high-precision centimeter positioning, the evolution of technology is always unexpected! Various positioning technologies of indoor positioning solutions appear in turn. Which technology is most suitable for indoor positioning? Let’s take a comprehensive perspective to understand the Bluetooth indoor positioning solution. Overview of Beacon Indoor Positioning Technology There are two Beacon indoor positioning technologies: 1. Passive location: Use the Bluetooth gateway to capture the broadcast data transmitted by the beacon on the person/object. The gateway is deployed and installed in the environment. And the gateway will return the collected beacon data to the server through the network. The server obtains the real-time position coordinates of the beacon through a positioning algorithm based on the coordinates known by the gateway. 2. Active position: Use the APP on a mobile device to get the Beacon broadcast data. The APP will have a positioning algorithm. Based on Beacon broadcast data, we can know the person's location who holds the mobile device. The location and navigation in the room are realized through APP or Applet, which is suitable for shopping malls, parking lots, and hospitals. Features of Beacon indoor positioning technology Compared with Wi-Fi positioning technology, Beacon technology suffers less environmental interference. Beacon product is based on the battery power supply. With the advantages of Bluetooth low energy consumption, long service life, small size, and the high penetration rate of Beacon devices, Bluetooth positioning is the most commonly used technology in indoor positioning technology. In daily life, smartphones and smart speakers support Bluetooth. The popularity and mass use of Bluetooth makes Bluetooth chips at a low price. And the BLE price is lower than traditional UWB/RFID solutions. How does Bluetooth realize indoor positioning? The Bluetooth working frequency is 2400 MHz ~ 2483.5 MHz. When Bluetooth initiates a broadcast, in addition to its own MAC address, the strength of the Bluetooth signal will also be broadcasted, namely RSSI information. The RSSI reflects the signal strength of the broadcast data packet. According to the RSSI, when the Bluetooth receiver is closer to the transmitter, the signal strength is stronger, on the contrary, will be weaker. The relationship between the signal strength and the distance from the transmitter can be found through the transformation of signal strength. By deploying a Bluetooth transmitter in the room, namely a beacon, the Bluetooth receiver can determine its indoor location after receiving the RSSI signal broadcasted by the transmitter. This positioning method is called active positioning, and the positioning accuracy is 3 meters to 4 meters. Through a reasonable algorith...
IoT security made simple with SimpleLink™ Wi-Fi® RF-star CC3100 and CC3200 module RF-WM-3200B1
Mar 06, 2019 IoT security made simple with SimpleLink™ Wi-Fi® RF-star CC3100 and CC3200 module RF-WM-3200B1
IoT security made simple with RFSTAR Wi-Fi® CC3100 and CC3200 modules RF-WM-3200B1 The Internet of Things (IoT) connects billions of devices and brings a huge opportunity for businesses to grow. However, billions of new connected devices also brings billions of new opportunities for hackers to steal intellectual property (IP), compromise users’ property and invade their privacy. While consumer awareness for Internet security grows as more security breaches at large companies are revealed to the public, secure Internet communication technology has advanced to a level that provides online banking, e-commerce and government services. State-of-the-art Internet security relies on advanced cryptographic algorithms, powerful computers and collaboration between major Internet companies and users. The common security capabilities available to Internet applications today include the following: · Private communication – Information exchanged between parties is encrypted, such that an eavesdropper cannot understand it. · End-point authentication – Communicating parties confirm each other’s identity prior to any information exchange to prevent attackers from using a false identity to access information and gain unauthorized control of a remote device. · Information authentication – Critical information including transaction data and software updates are digitally signed to authenticate its origin and prevent malware installation. These security capabilities largely rely on a few fundamental building blocks, including: · Stable cryptographic ciphers such as the Advanced Encryption Standard (AES), Secure Hash Algorithm (SHA2) and the public key ciphers RSA and ECC. When used properly with an adequate key size, these ciphers have no known practical attack. · The Transport Layer Security (TLS) protocol, superseding its predecessor Secure Sockets Layer (SSL) protocol, provides the framework for establishing a secure communication channel between two parties. It handles both information encryption and end-point authentication, and relies on the cryptographic ciphers mentioned above. · Public key infrastructure (PKI) provides the building blocks for authentication and trust through a digital certificate standard and certificate authorities (CA) such as Symantec and others. The benefit of using these well-known ciphers and protocols in IoT applications is two-fold. First, it relies on proven technology that is widely deployed and tested by the industry at a mega-scale. Second, it allows harnessing the power of already deployed Internet services (e.g. email, social media) as well as the public key infrastructure provided by CAs. Although Internet security technology is widely available, recent research from Symantec Security suggests that many deployed IoT devices have not implemented adequate security measures. There are likely multiple reasons for these security gaps, but vendor awareness, software complexity and implementation costs are probably at the top of t...
Strengthening Wi-Fi security at the hardware level RFSTAR RF-WM-3220B1 W-iFi module
Mar 06, 2019 Strengthening Wi-Fi security at the hardware level RFSTAR RF-WM-3220B1 W-iFi module
Strengthening Wi-Fi security at the hardware level If you’re an Internet of Things (IoT) designer, you’re probably often challenged to do more with less when it comes to security, constantly looking for new ways to protect your products against an ever-growing list of threats with lean system resources and perhaps limited experience. Knowing that these struggles are very real, in this post I’ll outline a few top IoT security risks and common misconceptions on how to address them. I will also provide an overview of how new CC3220SF Wi-Fi module RF-WM-3200B1 give you more tools to help address security challenges through a novel architecture and rich set of integrated security features. Are there IoT applications that don’t need to implement security measures? Any device that connects to the internet may be vulnerable to local or remote attacks. Attackers can target almost any connected device to try and steal manufacturer intellectual property stored in the system, gain access to user data, or even maliciously manipulate the system to compromise users or attack third parties online. As demonstrated by the major distributed denial of service (DDoS) attack late last year, labeled by experts as the largest of its kind in history, even seemingly harmless products such as home digital video recorders (DVRs) can be maliciously infected and used as “botnets” to halt operations for third-party entities. The attack last year affected services such as Twitter and PayPal, but similar attacks could potentially target large smart infrastructure technologies such as electric grid systems. According to a 2016 study conducted by Kapersky Lab, a single DDoS attack can cost an organization more than $1.6 million to resolve. Recognizing these threats,RF-star's CC3220SF Wi-Fi module integrates a host of powerful, multilayered and hardware-based security features to provide you with powerful tools to help protect products from attacks such as local or remote packet sniffing, man-in-the-middle (MITM) server emulation, hostile takeovers via over-the-air updates, remote file manipulation, data and software theft, intellectual property (IP) cloning, and many more. Watch the below video to learn more about these tools: Should IoT security features primarily focus on Wi-Fi and internet-level encryption of packets sent over the air? Having strong Wi-Fi (Advanced Encryption Standard [AES]/Wired Equivalent Privacy [WEP]) and internet-level (Transport Layer Security [TLS]/Secure Sockets Layer [SSL]) encryption is critical to help prevent local and remote network-packet sniffing, respectively. But these measures alone may not be enough to fend off hostile takeover attempts or provide full protection against theft of IP, code, data, keys and identity information stored and used in a connected system. Figure 1 illustrates these measures in action. Figure 1: Local network security features in action The CC3220 Wi-Fi module actually integrates more than 25 additional security featur...
CC3220SF Wi-Fi module RF-WM-3220B1
Sep 15, 2018 CC3220SF Wi-Fi module RF-WM-3220B1
Product Description RF-WM-3220B1 is a Wi-Fi IoT module built on basis of TI CC320SF IC, which is embedded with a Cortex-M4 MCU. It supports a variety of peripherals i.e. camera interface, I²S, SD/MMC, UART, SPI, I²C, ADC and GPIO. The module supports IEEE 802.11 b/g/n standards, and is able to work at Station, AP and Wi-Fi Direct modes. Antenna wise, it offers 3 options: ceramic antenna, IPEX base and antenna welding. RF-WM-3220B1 supports TCP/IP protocols and relevant applications. It can be widely applied in a big variety of IoT scenarios i.e. home automation, home appliance control, security systems, smart energy, internet gateway, industrial control, smart metering, wireless audio, wireless doorbell and sensor networking nodes etc. The module has two operation modes: AT Command Mode and Data Transparent Transmission Mode. With AT Command Mode, the developer can write a series of AT commands to route the transmission of the data. While in Data Transparent Transmission Mode, the modules automatically transmit the data by broadcasting the UDP packets with designated destinations. The developer or user does not have to instruct how the data transmission is routed in the latter mode. However, to switch between operation modes for the network or change the work mode of a module, the user has to use some simple AT commands to instruct the modules. Application Product Features The module which works at Station mode can exchange data between any devices in the LAN, beside it can through a router to enter the internet, and communicate among remote devices. One module works at AP mode as TCP Server, and the other modules works at Station mode as TCP Client to communicate with it. Pin Assignment Package Size Module Thickness No. Parameter item Parameter details Description 1 Chip CC3220SF TI 2 Size 31*20mm - 3 Weight 5g - 4 Frequency Band 2402 MHz ~ 2480MHz   6 PCB 4-layer Impedance-matching, lead-free 7 Supply Voltage 2.3~3.6V DC The voltage higher than 3.6V is forbidden 8 Operation Range 100m Open area; +17dBm; 9 Max Power Max +17dBm 50mW 10 Power consumption Averge:1.AP Mode:74mA                                    2.STA mode Active:20mA                      3.STA Mode Always                                Connected(Long Sleep                          Intervals:400ms):1.5mA   4.STA Mode Hibernate:35uA 11 Communication interface IO See details in Pin definition 12 Antenna type PCB/IPEX 50Ω characteristic impedance/- 13 Operating temperature -40 ~ +85℃ Industrial-grade 14 Operating humidity 10% ~ 90% Relative humidity, without condensation 15 Storage temperature -55 ~ +125℃ Industrial-grade 16 Sensitivity -80dBm Find more details on CC3220SF datasheet 17 Inter...
Why ZigBee 3.0 module?
Jul 03, 2018 Why ZigBee 3.0 module?
ZigBee 3.0 is the only complete and interoperable Internet of things solution From mesh network layer to general language layer, enabling intelligent products to work together Why ZigBee 3.0 ZigBee 3.0 gives users and developers more options. The standardization of the whole stack covers chips from multiple chip suppliers, ZigBee Pro network protocol stack, and ZigBee cluster Library in application layer, bringing confidence that products and services can work together. ZigBee 3.0 complete solution includes testing, certification, brand and marketing support, making the development and sales of interoperable products and solutions easier, releasing growth opportunities, and giving unlimited innovation possibilities for home, work and travel. RFstar provides the most advanced ZigBee 3.0 module in the industry. Users can use the ZigBee 3.0 module of xinchida for secondary development or in-depth cooperative development with RFstar. ZigBee 3.0 advantages Interoperability Certification procedures ensure interoperability between devices Multi vendor ecosystem uses the same application layer common language ZigBee 3.0 network can be used for devices using previous application layer standards ZigBee 3.0 equipment can also be added to the network using the previous application layer standards Different industries, same plan Home, architecture, industry, retail, health, etc Developers and users in different fields have the same choice to solve the problem of market fragmentation The same application layer can meet the requirements of the complete deployment scheme Convenient and easy to use All the required files are in one place The same certification mark shall be used on each certified product and package Stable and reliable Proven mesh network, eliminating the impact of single node failure, can be expanded to large-scale network Self healing and scalable, capable of supporting a network of hundreds of devices Global general Use 2.4 GHz frequency band to ensure that the product can be deployed globally free of frequency band license fee Practice verification · 2500 certified products and 300 million deployed products Green environmental protection Specially designed for energy capture devices and ultra-low power consumption devices ZigBee routers all have green power proxy function to provide mesh network support for energy capture devices Future guarantee Developed by more than 400 member companies who have been deeply involved in the Internet of things industry for many years and launched to the market Continuous innovation - in our ecosystem, there are not only industry giants, established enterprises, but also start-ups and new forces Complete test The integrated test and authentication program covers all layers of protocol stack: MAC / PHY, network stack protocol and application layer Examples of ZigBee Application Equipment Types
2016 CES observation: smart home promotes new economic growth point RFstar to participate in the exhibition
Jul 08, 2017 2016 CES observation: smart home promotes new economic growth point RFstar to participate in the exhibition
The annual CES (Consumer Electronics Show) opened in Las Vegas on January 6, us time. As a world-renowned science and technology event, the concepts discussed in CES will become a hot topic in the next two to three years. However, in this CES, which seems to have no core theme, there are many things that are observed by interested people: the Internet of things, smart home, virtual reality, etc. More importantly, the combination of Internet of things and cloud computing. "Lazy economy" is being talked about by more and more people, or will become the new economic growth point of smart home in the next few years. An interesting phenomenon is that the concept of the lazy economy is very popular both at home and abroad. Although o2o has been used for many times since the beginning of the year, and now it has been slightly eased, the concept never seems to cool down. As Shahid Ahmed, a senior executive of PWC, said, "in the field of Internet of things, we have reached a turning point: the integration of consumer experience, digital technology and sensor technology." Fortunately, with the continuous development of related technologies, the smart home industry based on the home Internet of things can capture the "lazy economy" as a new growth field - the convenient life at your fingertips, which is the choice of the middle class who cares about saving time and is willing to try. What's more, "lazy people" are not idle, but to further liberate more time and energy to invest in more worthy areas. This coincides with the original intention of smart home interest: to make people's lives truly free and convenient through technology. What the "lazy man" requires is to work out the most reasonable scheme by intelligent calculation according to the actual situation in the simplest operation as possible, and to realize the requirements of accuracy and complexity as efficiently as possible. This requires not only technical support, but also the thinking close to the user's actual experience, otherwise it will become a chicken ribs. In fact, in the smart home industry, sharp manufacturers at home and abroad have caught the pass of this node, and timely launched a variety of products that are convenient for the user's life: sweeper robot, automatic fast food machine, intelligent lighting adjustment, intelligent door lock, etc. In terms of smart door lock, this CES is like the W2 walnut smart lock of CEI, which realizes the remote door opening and closing service of "cloud key", and provides a good experience for "lazy people" to break the space limit. It is worth noting that local excellent original manufacturers also have outstanding performance in the field of smart home, and they have also upgraded and fermented in the domestic market in recent years. There is no doubt that smart home based on "lazy economy" has great development potential. According to the latest report released by research and markets, it is predicted that the global smart home market will gr...
RF-star’s smart lighting solution displays in TI booth in CES 2015
Jan 14, 2015 RF-star’s smart lighting solution displays in TI booth in CES 2015
During January 6 to 9th 2015, the 47th Consumer Electronics Show( CES ) held successfully in Las Vegas with world's attention. In the last 2014, the smart home market have been got more attention from the media,enterprise and public. After a year of rapid development,smart home is one of the main characters in this CES that intelligent solutions and smart products attracted the public's attention. RF-star displayed intelligent lighting solution which enjoyed winning and popular at TI booth in CES. TI LPRF General Manager Oyvind Birkenes, RF-star CEO King Kang and TI LPRF Product Line Manager Jan-BJ rnar Lund RF-star smart lighting solution shows in TI booth in CES In recent years, in addition to the smart lighting solutions,RF-star has developed a series of smart solutions of consumer electronic products with customization, such as smart R/C toy, smart bracelet, ibeacon, anti-lost tracker, bluetooth e-cigarette, bluetooth e-scale, and etc. To prompt customers' commercialization and meet market demands,RF-star would make more efforts in RF applications with advanced technology.
RF-star attends Guangzhou International Lighting Exhibition with TI
Sep 19, 2014 RF-star attends Guangzhou International Lighting Exhibition with TI
The 19th Guangzhou International Lighting Exhibition is at hand. The exhibition, which is referred to as the “Oscar for Lighting Industry”, is expected to get more than 200000 visitors from 27 countries. 2,588 exhibitors will gather to show the most comprehensive lighting appliances, light sources and accessories, which covers the whole LED industrial chain of products and technologies. The characteristic of the exhibition this year may probably be a little different from the previous. In 2013, the exhibition saw the three trends of the development in the LED lighting industry as below: smart lighting, engineering project and LED technology integration. This year, the exhibition will promote the development of innovations in the above-mentioned hotspots, and strengthen the understanding to the hotspots in the industry. The organizer will also be hold 120 summit forums or communication activities, to discuss the latest lighting technology and new thoughts of design, and to expand cooperation opportunities. As a leading developer of wireless connection solution, RF-star will also attend this exhibition, in the name of Texas Instruments, and display the latest smart light control solutions, core modules and end-use products. As the biggest wireless connection solution design developers of TI in China, RF-star has developed a series of innovative lighting control solutions on the basis of TI chip technology. They are also consistent with the current developing trend and hotspot of the exhibition this year. At present, RF-star has already established firm cooperation with many well-known domestic lighting manufacturers, who will also take part in the exhibition and release their latest and coolest smart lighting products under our co-work.. As it is known, LED lighting has a great market demand, as the substitute to traditional incandescent lighting. Meantime there is no doubt that the LED lighting industry has entered in the era of intense competition. However, the Bluetooth Smart lighting solution developed by RF-star will provide more value growths to this industry. It helps LED lighting enterprises to keep up with the quick development of Internet of Things, and to realize the development and promotion of the enterprise. It is just a jump, with limited investment, and you will be in the field of Smart Home. We are glad to invite you to attend the 19th Guangzhou International Lighting Exhibition. And you are welcome to visit Booth E02 in Hall 13.2, where you will see the latest smart lighting development and an opportunity to start our collaboration in depth.
Industry Trends
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    Oct, 2021

    What Functions does Bluetooth 5.3 Specification Add?
    With years of intensive cultivation in the IoT industry, RF-star has been committed to providing wireless RF modules and solutions. As one of the world's most deployed wireless IoT connectivity technologies, Bluetooth has always been our strategic focus as it is enabled widely in IoT devices across all sectors and applications. According to the latest forecasts from ABI Research, the Bluetooth device shipments are expected to approach 5 billion units annually by 2022 and surpass 6 billion units annually by 2025. What makes Bluetooth the go-to wireless technology for IoT device makers and application developers? It is the ubiquitous support and global interoperability on digital devices of all kinds and types! Why Bluetooth technology is available to meet the growing demand for wireless communication across countless use cases for more than 20 years? Because the hard work and collaboration between Bluetooth Special Interest Group (SIG) member companies has driven the continuous innovation of the technology. On 13 July 2021, the Bluetooth SIG released Bluetooth® Core Specification version 5.3. This new release adds several feature enhancements which provide IoT device makers and application developers with significant reliability, energy efficiency and user experience improvements. All these just ensure a continued global growth of Bluetooth enabled products. New Features of Bluetooth 5.3: Periodic Advertising Enhancement Encryption Key Size Control Enhancements Connection Subrating Channel Classification Enhancement Removal of the Alternate MAC and PHY (AMP) Extension Congratulate to Bluetooth SIG on the release of the Bluetooth 5.3 specification. We believe that the new specification will enable the Bluetooth technology to create ever more innovative ways to win the IoT race. RF-star technology will continue to follow the new technology of SIG, research and develop the cutting-edge industry technologies, to let our customers always stay competitive in the fast-developing wireless field. Let us look forward to the introduction of new products leveraging the exciting features of Bluetooth 5.3, based on the multiple cooperation!
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    What Functions does Bluetooth 5.3 Specification Add?
  • 29

    Oct, 2021

    The Black Technology of the iPhone: Demystifying UWB Technology
    2020 Apple's autumn conference was held at the Jobs Theater on September 11. At this conference, one detail is that the iPhones are all equipped with U1 chip that supports ultra-wideband (UWB) technology. According to official publicity, the new technology will significantly improve the Spatial Awareness capabilities of Apple mobile phones. So, what does spatial awareness mean? What exactly can the U1 chip do? What is UWB technology? All of these will lead to a new round of smart device application innovation? The answers to these questions will be revealed next. The Spatial Awareness is the ability to perceive orientation which is positioning ability. According to Apple's introduction, iPhone equipped with the U1 chip further enhances the positioning function of the mobile phone. It can not only sense the location of its own mobile phone, but also the location of other nearby mobile phones. Based on the space awareness capability provided by the U1 chip, when using AirDrop (AirDrop is the function of wireless file sharing provided by Apple devices), you only need to point your iPhone to someone else’s iPhone, and the system will prioritize it (the closer you are, the higher the priority), allowing you to share files faster. iPhone11 can achieve the application effect of "the closer you get to me, the first you get a response". Positioning is a familiar topic for all of us. We often use APPs such as Google Map or Baidu Map, which have positioning and navigation services. Location services help us indicate directions and increase our sense of security as well as control, which bring great convenience to our work and life. Therefore, what is the difference between UWB technology and the positioning technology we use now? The commonly used positioning technologies now mainly include satellite positioning and base station positioning. Satellite positioning is a technology that uses artificial earth satellites to perform point position measurement. And it is currently the most widely used and most popular positioning technology for users. The characteristics of high precision, fast speed and low cost of use are very prominent. The well-known satellite positioning systems include the United States’ Global Positioning System (GPS), China’s Beidou (BDS), Europe’s Galileo, Russia’s GLONASS. The principle of base station positioning is similar to radar. Radar positioning is to emit radar waves and perform spatial position measurement based on the reflection of the target. The base station works like a "radar". Usually, a mobile phone will be under the signal coverage of multiple base stations in a city. The mobile phone will "measure" the downlink pilot signals of different base stations to obtain the signal TOA (time of arrival) or TDOA (time difference of arrival) of each base station. According to the measurement result, the coordinates of the mobile phone can be calculated combined with the coordinates of the base station, Here is a picture to show it....
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    The Black Technology of the iPhone: Demystifying UWB Technology

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