Experience-Centric Network Solutions
In the MBB Era, Experience is King!
The number of smart devices continues to grow exponentially. It is estimated that the number will exceed global population by 2020 and number of applications for smart devices will break through the 10-billion mark as mobile data also continues to mushroom. LTE-based innovations in applications will involve HD video services, high-quality VoLTE services, web-based mobile Internet applications, and other improvements.
The craze for mobile video started back in 2014. The volume of video is expected to account for 70% of all mobile data traffic within the next 3-5 years, at which time the amount of video consumed over such smart devices as tablets and smart phones is also expected to break through the fifty-percent mark. In the past year, leading operators have been refitting their strategic agendas with strengthening of video-service capabilities. AT&T acquired DirectTV and Vodafone purchased KDG, Germany's largest television company, shortly before taking over ONO in Spain.
As operators enrich their video content, user experience will become one of the main influencers on consumer decisions. According to statistics, 40% of viewers will exit from the page if an online video takes more than two seconds to load. In other developments, 2K large-screen mobile phones have becomes the new standard, and devices supporting quasi-HD/HD for better viewing experience will certainly become another mainstream. Ensuring the best user experience will become the key consideration driving operator network builds because it is precisely the element of user experience that will determine operator success in their video service offerings
System Builds with Network Metrics Focused on Experience
Building a user-centric bearer network first requires construction of a network evaluation system focused on experience. In decades past, providing clear voice services was the focus. Things have changed, LTE networks are much more diversified in terms of service offerings, which brings into question the pipe-based KPIs in traditional quality measurement systems that are unable to perceive the actual level of service being provided for each customer and each service type. Experience-focused network evaluation systems establish a relationship between the best user experience and service KQIs combined with network KPIs to arrive at quantifiable, effective indicators able to guide builds and optimize existing networks. These builds and optimizations begin and end with providing the best user experience, which in turn leads to business success for the operators.
After analyzing vast amounts of test data concerning VoLTE, web browsing, OTT video services, and other typical services, it has been determined that providing a superior customer experience entails fulfilling the following corresponding service KQIs.
‧ VoLTE service: Ring wait-time of less than 2.5 seconds; call set-up time of less than 1.5 seconds; voice delay less than 100 ms.
‧ Web browsing: Page response time less than 1 second; initial page loading time of less than 2 seconds.
‧ Video service: Initial buffering time of less than 1 second; zero frozen frames during playback.
To satisfy user requirements in achieving these best-experience service KQIs and in aligning with measured data on live networks, the round trip time (RTT) for TCP packets must be less than 28 ms, packet loss rate (PLR) must be less than 10-6, average downlink throughput on the user-side must be more than 8 Mbps, and peak throughput must reach 12 Mbps.
Mobile Bearer Solutions Ensuring Best User Experience
In response to the requirements placed on bearer networks from the MBB developments, Huawei launched the best experience bearer network solution addressing three main concerns for operators: large bandwidth and wide coverage area of the access layer, high-throughput of video services, and quality visualization down to the individual user and service item level.
To meet the demands from LTE and achieve 10 Mbps or more bandwidth needed for anytime, anywhere HD video, the experience-focused Huawei mobile bearer network solution relies on large-capacity ATN, microwave, and WDM equipment to provide the bandwidth, coverage, and AnyMedia capabilities to provide the performance the bearer network requires.
The mobile bearer network devices use Seamless MPLS technologies and L3-to-edge architecture to achieve E2E management of S1 services and X2 traffic forwarding over the shortest path, thereby reducing network latency. In addition, TCP acceleration and anti-congestion technologies reduce RTT and PLR, improving network throughput and ensuring the best experience in video with zero frozen frames during playback.
At the network management level, uTraffic and uNetBuilder as well as other tools in addition to Big Data analytics platforms combine with network device support for IP flow performance management (IP FPM) on each user and service type and app-based development of tools able to quickly locate network faults to achieve real-time perception of user experience, visualized service quality, and intelligent network O&M.
Operators are presented with opportunities and challenges. The Huawei solution helps operators build up their differentiated advantages focusing on user experience. The experience-focused Huawei mobile bearer network solution: another example of dedication to supporting service transformations and achieving commercial success for operators in the mobile Internet era.