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Wi-Fi 6/NearLink/BLE combo SoC with transparent broadband transmission
In the Hi3873V100 series, there are 3 types of packages according to SLE capability and host interface:
• Hi3873U: USB 2.0 host interface; 1 MHz or 2 MHz SLE RF bandwidth and SLE physical bit rate up to 4 Mbps
• Hi3873S: SDIO 2.0 host interface; 1 MHz or 2 MHz SLE RF bandwidth and SLE physical bit rate up to 4 Mbps
• Hi3873E: USB 2.0 host interface; 1 MHz, 2 MHz or 4 MHz SLE RF bandwidth and SLE physical bit rate up to 12 Mbps
Wi-Fi 6 introduces OFDMA, spatial reuse (SR), and BSS Coloring to mitigate co-channel interference and upscale concurrent connections. Wi-Fi 6 supports higher-order modulation and smaller subcarriers to provide higher rates. Multi-user multiple-input multiple-output (MU-MIMO) technologies, coupled with a beamforming technique, enable APs to communicate with multiple devices simultaneously, thereby allowing for more concurrent connections and better coverage.
In addition to the standard Wi-Fi bands, the product also supports dynamic narrowband Wi-Fi bands. This means that, for scenarios where speed is not critical, the product can reduce the Wi-Fi spectrum bandwidth to provide better coverage.With a novel physical layer, NearLink SLE supports smaller air interface timeslots, leading to greatly reduced end-to-end latency. Its polar code–based channel coding delivers over 7 dB coverage gains and anti-interference capabilities. It supports spectrum resource allocation based on center scheduling and uses an innovative channel scanning and selection mechanism. As such, it implements SLE fast frequency hopping and optimal channel selection, bringing great leaps in connectivity stability and transmission reliability. NearLink SLE also supports larger air interface bandwidth and higher-order modulation. Compared with traditional short-range technologies, SLE offers much higher air interface transmission rates.
The product can auto-discover NearLink devices within range; and complete device registration on the cloud through a secure and reliable communication channel.
When pairing with Nearlink-incapable devices, the product auto-switches to a traditional network configuration mode (such as the BLE or SoftAP-assisted).The product reports network configuration errors and guides the user through troubleshooting steps, so as to reduce return and replacement caused by network configuration failures. Collection of network configuration exception data helps with informed improvements.
Wi-Fi• 1x1 2.4 GHz (ch1 to ch14) Wi-Fi Station |
Bluetooth• Bluetooth Low Energy (BLE) |
NearLink• NearLink Low Energy (SLE) |
CPU Subsystem• High-performance 32-bit microprocessor with a maximum operating frequency of 240 MHz |
Peripheral Interfaces• 1x SDIO slave interface or 1x USB 2.0 interface and 2x UART interfaces |
Other• Input voltage: 3 V to 3.6 V (typical value: 3.3 V) |