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Gigabit Home WiFi Coverage Is on the Horizon

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With Gigabit Wi-Fi bundled into new FTTH services, broadband operators know how important Wi-Fi quality is for revenues.

Home Wi-Fi: A cash cow
In 2014, global shipments of Wi-Fi-enabled devices hit 5.5 billion units, with 70 percent penetration expected by the end of 2017.

However, Wi-Fi speed continues to be the main issue affecting user experience, and that was the trigger for Google’s ambitious US Fiber Gigabit broadband project “to make the web better and faster”. Optical modems are the access and control point for home broadband, and can increase user and service stickiness, reduce churn and boost ARPU. This is a vital element of the whole broadband offering as more carriers integrate Wi-Fi into FTTH services and create new business models for smart home products, including 4K video, video surveillance, smart controls, and home network management. Wi-Fi-capable smart optical modems are the lynchpin for all smart home services, and already China Telecom and China Unicom are two providers that offer smart home services through such devices.

Some examples of new Wi-Fi business models that are driving operator growth are:

Wi-Fi boosts IPTV
China Telecom Shaanxi (CTS) was able to offer its IPTV service to 98 percent of its subscribers thanks to 100 percent broadband Wi-Fi penetration – a feat that would not have been possible with wired connections. CTS has been pushing a home broadband package with bundled Wi-Fi since 2012, and this has resulted in a 14 percent yearly growth of IPTV service users.

China Telecom Sichuan rolled out a 4K IPTV service and quickly attracted 1 million users after aggressively promoting a 100 Mbps FTTH package with bundled Wi-Fi. China Unicom Tianjin also enjoyed exponential growth in user subscriptions with a bundled Wi-Fi package, including its WO TV Home service, which features multi-screen and multi-media sharing services.

Wi-Fi boosts ARPU
Scenarios where multiple users concurrently access broadband in communal accommodations such as university dorms require Wi-Fi’s flexibility. Solutions such as Portal authentication that allow operators to bill users individually can raise the total broadband package ARPU in communal halls to three to five times that of home package customers.

Wi-Fi boosts sales
The increasing adoption of home Wi-Fi drives the sale of wireless routers, Wi-Fi repeaters, Power Line Communication (PLC) adapters, and set-top boxes. Wi-Fi also encourages online payments, indoor networking, telephone relocation, and home wireless network commissioning, and operators are able to sell packages for optimizing home Wi-Fi that include these elements: Hong Kong operator PCCW markets one such package under its Smart Living brand for HK$8,800.

Say hi to Gigabit Wi-Fi
A recent Infonetics study revealed that 40 percent of service providers plan to offer 1 Gbps broadband in 2017, up from 15 percent in 2015. Leading operators already provide high-speed FTTH Wi-Fi services such as in the US, Comcast Xfinity which launched a FTTH service with Wi-Fi speeds of up to 725 Mbps, and its biggest rival, Verizon Fios, which introduced America's fastest home Wi-Fi package with speeds as high as 800 Mbps. In the UK, Virgin Media, BT, and Sky have all launched Wi-Fi services that claim to be the UK's fastest! A number of Japanese operators are providing Gigabit Ethernet to their users, with So-net even offering a 2 Gigabit package.

Gigabit broadband rates enable ultra-high-speed services such as HD movie downloads, interactive HD VR games, and multi-angle 4K live sport broadcasts. China Telecom Shanghai trialed the world's first Gigabit FTTH broadband on May 17, 2015, with services including three-way 4K TV, one-way HD IPTV, three-way video conferencing, Global Eye five-way HD home video surveillance, and smart home services. The service offers download speeds of 700 Mbps for multiple applications in concurrent use.

With the rise of 4K and 8K video streaming, VR video, massive multiplayer online gaming, video calls, home video surveillance, and home automation gain traction, FTTH services with bundled Gigabit Wi-Fi will mean new revenue potential for high-end operators.

Gigabit Wi-Fi optical modems
Today, bandwidth speeds on optical modems are still too slow. Most use a 2x2 MIMO Wi-Fi interface based on the 802.11n standard. This supports maximum air interface speeds of 300 Mbps and actual Ethernet throughput of approximately 140 Mbps.

3X3 MIMO Wi-Fi products based on 802.11n can attain air interface speeds of 450 Mbps, but are too costly for a wide rollout. The successor of the 802.11n standard – 802.11ac – works in the 5 GHz band and supports up to 8X8 MIMO, providing theoretical air interface rates up to 6.9 Gbps. The 5 GHz and 2.4 GHz dual frequency bands that 802.11ac devices work on have advantages such as more optional channels, greater anti-interference, higher speeds, and less delay than the 802.11n 2.4 GHz band. They can also offer better HD video and other high-speed wireless services.

Most 802.11ac optical modem products provide 2.4 GHz 2X2 MIMO and 5 GHz 2X2 MIMO or 2.4 GHz 3X3 MIMO and 5 GHz 3X3 MIMO dual-band air interfaces, with air interface speeds of between 1,166 Mbps and 1,750 Mbps. The industry chain for these products is mature, and equipment manufacturers have begun supplying carriers in bulk. Huawei's Gigabit Wi-Fi-ready 802.11ac optical modem features a dual-core dedicated chip, with one core exclusively handling Wi-Fi flow enabling a Wi-Fi Ethernet throughput close to 1 Gbps.

The 802.11ac standard will bring beamforming antenna technology into commercial application for the first time. Beamforming enables directivity and gain enhancement on Wi-Fi signals through accurate sensor array calculations, boosting Wi-Fi transmission speeds by at least 60 percent in defined locations and over specific distances. Automatic channel adjustment is a new function of Huawei's optical modem that also boosts Wi-Fi speeds by automatically calculating interference on all channels, and connecting with the user’s device on the channel with least interference.

Huawei's Giga Wi-Fi Anywhere is a complete indoor distributed Wi-Fi solution equipped with PLC and Wi-Fi repeaters. The PLC repeaters are based on the ITU-T's G.hn standard, and achieve up to 1 Gbps Ethernet relay capability through power lines. The solution also enables seamless roaming for the user device between the optical modem and Wi-Fi repeaters by automatically configuring Universal Plug and Play (UPnP) on the PLC and Wi-Fi repeaters, giving users an unprecedented Gigabit Wi-Fi experience.

Smart Optical Network Terminals (ONT) are now used in more homes and businesses. With Huawei's smart ONTs, high-speed Gigabit Wi-Fi is truly a user-oriented service. The devices can be managed via a mobile app, giving users full control of their Wi-Fi service. The app includes the following powerful features:

Simple and flexible service provision: quickly provisions Wi-Fi services using XML profiles without changing the OSS side.

Proactive experience management: enables operators to remotely detect home Wi-Fi strength in all directions from the ONT, and push the results to subscribers’ mobile phones. Operators can also push Huawei's Wi-Fi solution for enhanced coverage to subscribers.

Health mode: sets timers on the ONT to provide Wi-Fi at certain times only, which reduces exposure to Wi-Fi signals and cuts emissions.

Guest network management: sets up Wi-Fi networks for guest users with specific passwords and time limits for added security on home wireless networks.

Huawei Technologies Co. Ltd.

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