This blog is by Anna-Kaarina Pietilä at Nokia Networks.
It’s the sheer numbers that continue to stagger me. In late 2013, Facebook users were uploading 300 million photos to the platform every day. Now it has 745 million active mobile users daily. Even the relative newcomer, Instagram, now sees 70 million photos and videos being shared each day.
Among the questions keeping operators awake at night must surely be: How can we provide uplink capacity to meet this demand and can we serve smartphone users better by improving coverage over the whole network area? How can we ensure network coverage that enables our subscribers to ‘share their moments’ wherever they are?
One operator that has found good answers is China Unicom, which certainly has its fair share of uplink traffic – of its 300 million mobile subscribers, 149 million are 3G and 4G subscribers.
The operator tested Nokia Dual Cell HSUPA technology in its live mobile network in Shanghai, using our latest HSPA release. The test was a joint effort between Nokia Networks, China Unicom, and Qualcomm Technologies Inc., a subsidiary of Qualcomm Incorporated, and achieved the maximum possible uplink throughput of 11.5 Mbps, representing a 100% improvement.
Mr. Hou Wenjun, General Manager of Shanghai Unicom Network Optimization Center, China Unicom, says: “We are very satisfied with this outstanding achievement. We’re constantly working on offering our customers the best smartphone experience with the fastest speeds.”
The uplink upgrade with no downsides
With Dual Cell HSUPA, the mobile device uses two adjacent uplink carriers to transmit data and is able to boost uplink data speeds to up to 11.5 Mbps. It achieves better use of resources and higher spectral efficiency by allocating resources and load balancing across the uplink carriers. The result is more network capacity with no need to add new spectrum. Yet the operator can still meet the increased uplink traffic load.
And that’s not all. Combining Dual Cell HSUPA with High Speed Cell FACH and interference cancellation means that users will experience double the uplink data rate that they’re used to, with faster apps and longer battery lifetime. Upload speeds can be maintained even in loaded networks. The High Speed Cell FACH handles small data packets more efficiently, reduces signaling and improves device battery power savings. Enhanced HSUPA Interference Cancellation reduces interference for up to 60% gain in uplink throughput to fit up to 30% more users per cell.
The Qualcomm® Snapdragon™ 615 processor*, a product of Qualcomm Technologies, was used in the test mobile devices, and is available for device manufacturers. Dual Cell HSUPA capable devices are expected to be commercially available this year from leading manufacturers.
Visitors to the Nokia Networks stand at Mobile World Congress 2015 have been experiencing a demo of this achievement firsthand on Microsoft Lumia devices with Qualcomm chipsets.
All features are part of Nokia Liquid Radio WCDMA Software Suite.
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* Qualcomm and Snapdragon are trademarks of Qualcomm Incorporated, registered in the United States and other countries. Other product and brand names may be trademarks or registered trademarks of their respective owners.