China is staging the second phase of its national 5G tests and ZTE Corp is a participant. The broadband infrastructure vendor announced it had established several new mobile 5G broadband records for speed and performance while completing tests across seven principal scenarios in Huairou in Beijing.
ZTE completed tests for continuous wide coverage, enhanced mobile broadband (eMBB) at sub-6GHz, eMBB at millimeter wave frequencies, ultra-reliable and low-latency communications (uRLLC) and massive machine type communications (eMTC), as well as two hybrid scenarios during testing, which was sponsored by the IMT-2020 (5G) Promotion Group.
eMBB at Sub-6GHz Test: Aiming to provide greater bandwidth and higher performance mobile communications and Internet connectivity in densely populated urban areas, ZTE was able to provide 28 data streams for multiple users using a pre-commercial 3.5GHz base station with a record-setting cell throughput above 19 Gbps. That’s nearly double the 10 Gbps speed defined in the ITU’s draft 5G standard, management highlights.
ZTE’s sub-6GHz 5G eMBB test platform provided greater spatial frequency division than the common, industry standard value of 16 streams and was able to overcome the limitations of standard interfaces, according to the company.
Industry-first eMBB at mmWave Test: Single-User Rate Exceeding 13 Gbps The first in the industry to use the high-frequency 5G 26GHz base station in a test scenario, ZTE was able to transport wireless digital data across four streams at a rate of 13 Gbps and even when one test terminal supported a bandwidth of less than 1-GHz. That’s substantially higher than ITU millimeter wave specs and serves as a big step forward with regard to commercializing high-frequency mobile communications, according to ZTE.
mMTC Scenario: Massive Capacity of 90 Million Connections/Mhz/hour/km2 ZTE was able to raise the overload rate of connected 5G test terminals 600 percent by using MUSA (multi-user shared access) technology, verifying an equivalent massive IoT (Internet of Things) access rate of 90 million connections per MHz per square kilometer. That’s 90-times that specified by the ITU for mMTC, one of three key scenarios defined in 3GPP 5G standards.
uRLLC Scenario: Ultra-Low Latency of 0.416 ms Turning to ultra-low latency wireless telecoms, ZTE was able to transport digital wireless data with 0.416 millisecond (ms) latency, substantially below the 1 ms defined by the ITU. ZTE employed its own chipsets, which automatically adapt in eMBB and uRLLC scenarios, the company pointed out.
Unified Solution for Hybrid Scenarios: Network Slicing Using network slicing and sub-6GHz base stations, ZTE created a unified network supporting air interfaces in eMBB, mMTC and uRLLC scenarios. This enabled a cell to connect flexibly to various service terminals.
A single cell peak rate of 15 Gbps was reached with an air interface latency lower than 0.416 ms. Coincident massive connectivity capacity came in at more than 90 million connections per MHz per hour per km. The results for the three hybrid 5G scenario tests represent industry breakthroughs in development of network air interfaces, according to ZTE.