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Six reasons for car factory to upgrade Wi-Fi 6 2020-07-07


Car manufacturers are rapidly adopting Wi-Fi 6, not only because the latest Wi-Fi 6 standard can greatly improve original performance, but also bring many other aspects of optimization to the market.


For decades, when car enthusiasts talked about car performance, the topic always revolved around the original speed. For each generation of new models, people focus on how quickly the car accelerates from zero to 60, or how long it takes to run a kilometer. Now, these conversations are changing. Electronic devices provide support for the car, enhance the driving experience, and expand the definition of vehicle performance. People are not only concerned about whether the speed of a given car model is improved, but also whether it is more intelligent, safer and more functional than similar vehicles.

A similar situation occurs in the discussion of Wi-Fi standards. When using the previous generation of Wi-Fi standards, speed is the main goal of each generation of new technology improvement. Today, companies are rapidly adopting Wi-Fi 6, not only because the latest Wi-Fi 6 standard greatly improves original performance, but also brings many other optimizations to the market. These optimizations are critical to achieving a seamless wireless experience in the face of a growing use case in vehicles.

Growing use cases of Wi-Fi


Wi-Fi is the core technology used by customers to connect and interact with vehicles. It can be used to play streaming music and video, provide hot spots for devices in the car, project mobile phones to the digital cluster, and download and update the infotainment system wirelessly. Car manufacturers hope to expand these usage models in the future to support the growing number of innovative use cases, including:

Data transmission and recording of multiple cameras inside and outside the car to enhance driving safety;
Upload the data of automatic driving sensor and camera, so that the vehicle factory can improve the drivers’ auxiliary tools;
Upload maintenance and diagnostic information, so that the repairman can know the fault condition of the car before you order the repair.

Car manufacturers even hope to use Wi-Fi to program the vehicles on the production line before handing them over to customers, or update the car toughness when the car is parked in the dealer's parking lot. Wi-Fi technology can also be used to detect children accidentally left in the car in hot weather.

Six advantages of in car Wi-Fi 6


1. Reduce network congestion


In recent years, with more vehicles (most of which are expected to carry at least one Wi-Fi device by 2022) to provide Wi-Fi functionality, the use of Wi-Fi has increased significantly, resulting in increased network congestion and interference inside and outside the vehicle. This kind of network congestion will affect the wireless performance on roads, in traffic jams, in parking lots, and even in dealer showrooms.

Wi-Fi 6 can increase the overall available bandwidth, reduce network congestion, quadruple the bandwidth and increase the total bandwidth per user. One is orthogonal frequency division multiple access (OFDMA), which allows multiple users with different bandwidth requirements to access channels at the same time; the other is BSS (basic service set) coloring, which enables Wi-Fi by identifying signals from different radio systems on the same channel, the device can then identify and ignore unnecessary traffic and increase the total available bandwidth.

2. Expanding coverage


When the car is parked in the home garage, dealer display room or parking lot, most of the vehicles are far away from the nearest pick-up point. This makes it difficult to use Wi-Fi features, such as wireless firmware updates or vehicle data uploads. Wi-Fi 6 has added several core technologies, greatly improving the coverage.

2.4GHz frequency is usually used to maximize the communication distance because of its longer wavelength. Wi-Fi 6 has added a dedicated range extension mode to further extend this distance. Wi-Fi 6 can also support up to eight antennas in the access point, of which 8 × 8 sound feedback can achieve complete download performance over a longer distance.

3. Reduce power consumption


Connecting Wi-Fi network when the vehicle is off will waste valuable battery power and shorten the idle time of the car, which limits the utilization of Wi-Fi when parking. Many technologies are used to reduce system power consumption and current consumption during flameout. Wi-Fi 6 makes this process easier.

Wi-Fi 6 uses a more efficient scheduling mechanism, called target wake time (TWT), to let the access point plan the wake-up time with each client. The car can sleep for a set period of time, and then wake up when it is necessary to connect Wi-Fi. For example, in the dealer's stronghold, the vehicle can receive necessary updates and start and run normally at any time, even if it is parked for a long time.

4. Faster Speed


In addition to the optimal performance description, Wi-Fi 6 does achieve faster data transfer rates. In extremely crowded environment, the peak data transmission rate of a single client device can also be increased by 40%. Make full use of some optimization and additional functions of the basic protocol, including OFDM, MU-MIMO and 1024-QAM (quadrature amplitude modulation) to increase the throughput.

5. Upload performance


With more intelligent cars and the introduction of automatic driving mode, the data generated in the car is growing exponentially. In addition, in order to monitor passengers or driving in vehicle sharing apps and other programs, there is an increasing number of vehicle cameras; in the near future, sharing such data will require upload performance comparable to download speed.

In order to complement the download multi-user MIMO (MU-MIMO) imported from Wi-Fi 5, Wi-Fi 6 enhances the upload function. For multi-user networks, the upload rate will increase by as much as 80%.

6. Consumer satisfaction


The consumer experience is not a feature of Wi-Fi 6, but the use of Wi-Fi 6 in vehicles can help improve the driving experience and meet consumers' demand for technology.

Wi-Fi 6 has a place in consumer devices, including smart phones and access points, and will quickly become part of the Internet of things and smart home devices. Consumers want their vehicles to be integrated into this trend, and with the increasing popularity of Wi-Fi 6, they can get more reliability and seamless connected.


There is no doubt that Wi-Fi 6 will be included in the design. The standard technology on smart phones usually takes two to three years to apply to vehicles. Consumers want their cars to keep up with these trends, especially in terms of experience, performance and quality. For this reason, many car manufacturers have incorporated Wi-Fi 6 into their next generation vehicle development plans. W- Fi 6 is the future vehicle hub technology, and we have great expectations for its innovation, operational efficiency and driving experience.


—Source:eettaiwan.com

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