Rain’s 5G Huawei Router : Wi-Fi 6

Rain’s commercial 5G-based fixed wireless access (FWA) broadband service is currently only available in certain areas in Johannesburg and Tshwane, where it has close to 250 towers with an estimated 500,000 households in the coverage area. Rain is using its licensed 3.6GHz spectrum. 

The company said it hopes to expand this network over metropolitan South Africa, beginning with an expansion into Durban and Cape Town next year. Customers can be notified when Rain’s service will be available in their area: https://www.rain.co.za/more-about-5g

Selected customers in Rain’s 5G coverage area have been invited to be the first to purchase “ultra-fast 5G, unlimited internet” for only R1,000 per month. Rain will deliver a “state-of-the-art 5G router” to a customer’s home. “No installation is required, the router is simply plug-and-play and you will be connected immediately. The speed and capacity of the 5G network, together with the latest Wi- Fi 6 technology in the router, will enable rain users to stream high-definition video to multiple devices simultaneously,” says Khaya Dlanga, Rain’s CMO.

In the future, 5G will also power super-fast mobile connectivity for smartphones and enable the connection of millions of internet-of-things (IOT) devices. Dlanga said that Rain is committed to be a key player in building the 5G and 4IR ecosystem in South Africa. 

It is currently unclear whether Rain will need to shape or throttle its packages to preserve the available bandwidth on its 5G network.If throttling does occur, however, this could dramatically impact the comparison between fibre and Rain’s 5G product.

 

Wi-Fi 6 is loaded with new features
1024-QAM (quadrature amplitude modulation)

Enables a 25% data rate increase (throughput) in Wi-Fi 6 (802.11ax) access points and devices.

A highly developed modulation scheme used in the communication industry in which data is transmitted over radio frequencies. It is technique that mixes both amplitude and phase variations in a carrier at the same time. Building on the functionality of OFDM (already available in previous Wi-Fi standards), OFDMA gives access points the ability to divide channels into many sub-channels. What this effectively means is that access points can communicate with multiple devices at the same time at a lower data rate.

Orthogonal Frequency Division Multiple Access (OFDMA)

This is another modulation scheme and a feature of Wi-Fi 6 (802.11ax) that allows access points to serve multiple clients at the same time. OFDMA follows a set of rules created for the transmission of data between more than one terminal (any device at the end of a transmission channel, such as a computer or phone) over a transmission medium (such as a wireless network). Instead of the traditional analog modulation used in multiplexing, OFDMA uses carrier signal waves, called subcarriers, to move small bits of information in a more streamlined fashion.

Longer OFDM Symbols – Increases the duration that an OFDM symbol is transmitted from 3.2ms on Wi-Fi 5 to 12.8ms on Wi-Fi 6

A potential disadvantage include  the diversity of frequencies is conditional on how subcarriers are assigned to users, and can thus become very complex.

MU-MIMO (Multi-User Multiple-Input Multiple-Output)

Wi-Fi 6 will be able to handle eight streams of data in either uplink or downlink, supporting more users at once and offering four times the maximum theoretical throughput of Wi-Fi 5.

image credit: https://www.techspot.com

Dynamic fragmentation 

– Whereas Wi-Fi 5 has static fragmentation, which requires all fragments of a data packet to be the same size (except for the last fragment), dynamic fragmentation allows these pieces to be of a varying size for better use of network resources.

Beamforming

Exists on Wi-Fi 5, though that standard supports four antennas and Wi-Fi 6 increases this to eight. Beamforming improves data rates and extends range by directing signals toward specific clients instead of in every direction at once. This aids MU-MIMO, which doesn’t work well with rapidly moving devices.

Improved outdoor operation

Several of these features will result in better outdoor performance, including a new packet format, longer guard intervals and modes for improved redundancy and error recovery.

 

image credit : https://www.techspot.com

References:

https://www.techspot.com/article/1769-wi-fi-6-explained/

https://searchnetworking.techtarget.com/definition/orthogonal-frequency-division-multiple-access-OFDMA

https://mybroadband.co.za/news/broadband/320441-rain-5g-vs-200mbps-fibre-uncapped-pricing-shootout.html

http://www.connectingafrica.com/author.asp?section_id=530&doc_id=754325&&utm_source=twitter&utm_medium=social&utm_campaign=ca-content-connecting-africa&utm_content=TAM2647TWITTERF&tracker_id=TAM2647TWITTERF