Open heterogeneous Zhilian capabilities and redefine multi screen interactive experience


Content source: Huawei Developer Conference 2021 HMS core 6 System Technology Forum, keynote speech “opening heterogeneous Zhilian capabilities and redefining multi screen interactive experience”.

Speaker: Wang Tongbo, Huawei terminal Wi Fi technology expert

When it comes to “multi screen interaction”, we can easily think of a typical application scenario: projection. Have you ever encountered such problems with projectionproblem

  • Photos or videos taken by mobile phones want to be displayed on TV, but they can’t find a data cable connection, or mobile phones and TV have a long search time and can’t connect to the same network;

  • For mobile phone multi screen interaction for file sharing, you need to disconnect the screen connection and then share files;

  • Headache situations such as large delay, jamming, poor picture quality and asynchronous audio and video of projection protocol often occur.

In general, this is caused by the poor interoperability of multi screen interactive devices, resulting in poor user experience.

Insight into the poor traditional Wi Fi projection experiencemain causeAfter that, we found outThree pain points

  • Wi Fi P2P connection process is complex;

  • Wi Fi P2P protocol only supports 1-to-1 and 1-to-multi star connections, and cannot establish any multipoint connection;

  • Different channels with the same frequency: high interference caused by the overlap of projection channel and connection channel, and high delay caused by frequent channel switching.

How to solve these pain points?

I tell a little story: during the national day, I visited a friend’s house and shared pictures and videos. At this time, we thought we could use Huawei smart screen, so we took out the mobile phone and completed the one click connection in less than 2 seconds. Behind this smooth experience is the Huawei heterogeneous Zhilian module I want to launch today.

Four core competitiveness of heterogeneous Zhilian modules

Unlike traditional Wi Fi modules,Heterogeneous Zhilian module has the advantages of cross technology, cross equipment and cross system, it can provide enhanced communication base for IOT equipment, integrate four core competitiveness, and provide users with better communication experience.

Close to express connection: help IOT fast distribution network

Ranging based on signal strength, the mobile device automatically finds and pops up the distribution network。 Compared with the traditional protocol, the power consumption of heterogeneous Zhilian protocol increases from more than 14 seconds to less than 2 seconds, and the operation steps can be completed from more than 10 steps to 3 steps, making the user experience more smooth.

Multi terminal direct connection: enable multi device interconnection and ad hoc networking

Breakthrough wi-fi802.0 11. Limited by the protocol stack, the equipment can be directly connected arbitrarily, with more than 4 direct links. It supports multipoint to multipoint, and the screen projection delay is reduced to less than 35 seconds. The full channel frequency hopping technology is adopted to resist interference, monitor the air interface quality in real time during the communication process, and automatically select the optimal channel. For example, mobile camera, motion camera and UAV camera can shoot in multiple positions through multi terminal direct connection. One person can easily operate multiple devices, save time and cost, and reduce the entry threshold of the media industry.

Low power consumption: improve the endurance of IOT equipment

Traditional Wi Fi P2P works continuously and panoramically, with high transmission power consumption. Heterogeneous Zhilian protocol will dynamically adjust the working state of the module based on the app traffic model, including full awake working state, dormant state and half awake state. In effect, compared with traditional Wi Fi, heterogeneous Zhilian protocol reduces transmission power consumption by 40% and standby mode by 80%. This is very helpful for IOT devices and battery sports cameras to avoid shooting for 3 minutes and transmitting for half an hour.

Far field communication: enable free connection between far field 1 + 8 + N devices

One mobile phone is connected to multiple devices, which can be applied to scenes such as far-field printing, file sharing, home security and so on. The low-cost far-field P2P capability ensures easy end-to-end connection of users and provides stable multi network transmission. The delay is less than 100 milliseconds and the penetration rate reaches 80%.

Heterogeneous Zhilian module supports Android, Hongmeng, windows and Linux systems; Compatible with a variety of interfaces, it is suitable for smart phones, Wintel PC devices and IOT rich media devices to meet the needs of various categories. This is not only a simple functional module, but also brings different experiences for 1 + 8 + n ecology.

At present, we provide end-to-end heterogeneous Zhilian module solutions. At the same time, Huawei communication is fully connected to OpenLab, providing Wi Fi, Bluetooth, NFC open platforms and professional empowerment for partners in the whole industry, so as to jointly improve consumers’ Internet experience. Looking forward to communicating with developers again, thank you!

Learn more > >

visitOfficial website of Huawei developer Alliance
obtainDevelopment guidance document
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