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The Wi-Fi Alliance announced the launch of Wi-Fi 6 Certification program On September 16, 2019. The program aims to bring devices using next-generation 802.11AX Wi-Fi wireless communications technology up to standard.

5G has three major scenarios, NAMELY eMBB, mMTC and URLLC, and is oriented towards future 4K/8K, VR/AR and other high-bandwidth video services and the interconnection of everything. See 5g cellular antenna for sale by Cowin. The direction of Wi-Fi 6 is consistent with 5G:

  • Wi-Fi 6 supports multi-user high-speed concurrency and ultra HD video applications in user intensive Settings such as homes, stadiums and other public places.

  • Wi-Fi 6 optimizes device power consumption and coverage, enabling it to better support antenna for IoT applications such as smart homes and smart cities.

Comparing with Wi-Fi 5, Wi-Fi 6 introduces the following major new technologies:

OFDMA: Different from THE OFDM technology used in Wi-Fi 5, Wi-Fi 6 borrows the OFDMA technology used in the cellular networks. Multiple terminals can transmit simultaneously in parallel without waiting in line or competing with each other, thus improving efficiency and reducing delay.

OFDM: When the terminal device uploads or downloads data, it occupies the whole wireless channel in each time period.

OFDMA: OFDMA wireless channel in frequency domain division multiple subchannels (a carrier), to form the time-frequency resources, user data bearing on each resource block, rather than to take up the whole channel, so as to realize multiple users at the same time parallel transmission inside each time period, not waiting in line, competing with each other, enhance the efficiency, reducing the queuing delay.

It is estimated that the average home will have 50 wirelessly connected devices by 2020, with Wi-Fi 6 introducing flexible OFDMA technology that enables wireless access to a wide range of devices, including doorbells, fridges and light bulbs.

Lift coverage

As with cellular networks, the bottleneck in wireless coverage is uplink. In Wi-Fi networks, AP usually has more transmitting power, more cellular antenna, and far downlink coverage. Meanwhile, AP keeps the power plugged in and does not have to worry about power consumption.But for mobile phones, tablets and other Internet of Things terminals, transmitting power and the number of antennas are limited, affecting upline coverage, while battery life must be optimized.

For this reason, Wi-Fi 6 optimized signal uplink coverage in a similar way to nB-IoT technology, that is, the terminal concentrated its energy in a narrower 2MHz channel and enhanced uplink coverage by increasing uplink power spectrum density.

Wi-fi 6 expands its coverage, enabling it to move from indoors to outdoors, paving the way for the future deployment of the Park's Internet of Things and smart cities.

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