Dave Wolter AVP, Radio Technology & Strategy AT&T Labs, Inc. Hosted by

Transcription

1 Dave Wolter AVP, Radio Technology & Strategy AT&T Labs, Inc. Hosted by

2 AT&T Trials Lessons Learned for Next Generation Services 5G New Horizons Summit March 16, 2018 Dave Wolter AVP Radio Technology and Strategy

3 Presentation title here edit on Slide Master Austin Testbed and Friendly User Trial MDU ResidentialCustomers AT&T Building Fiber EnterpriseCustomer Small Business Customers 2015 testing in 3.5, 15 and 28 GHz 2016 initial enterprise FUT at 28 GHz 2017 extend to multiple residential and SMB customers 28 GHz Apartment with NLOS - Fully wireless home - simultaneous DirecTV, Video Conferencing, and 360 degree 4K immersive video (VR) Church with 5G feeding Wi-Fi distribution Several small businesses Ranges from meters Throughput from Mbps city Pilot deployment 2018 Austin mobility testbed mmwave validation and characterization Beam forming, selection & tracking SU and MU-MIMO Propagation, penetration and throughput Channel sounding (Porcupine) RAN latency 5-7 msec 3

4 Presentation title here edit on Slide Master 5G Mobility PoC Trial Church and Road Coverage V2x Mobility Testbed 2 Poles 4 Transmission Points CoMP - Dynamic Point Selection Intra-BBU Intra-BBU Intra-BBU Intra-BBU Inter-BBU Inter-BBU

5 Presentation title here edit on Slide Master Pilot Deployments in 3 Cities Waco, TX Kalamazoo, MI South Bend, IN Multiple vendors Multiple environment types, conditions Residential and Business customers Example deployment Magnolia Market at the Silos, Waco, TX

6 Magnolia Market at the Silos 5G Radio Link Warehouse/Administration Building Range = 180m AT&T Flexware Wi-Fi distribution architecture End to end network with vran and vcore mmwave DL/UL Throughput ~ 1200/100 Mbps (fixed TDD) Wi-Fi Client Throughput ~ 200 Mbps Spring at the Silos 3-day event Warehouse Windows CPE antenna >1000 people on grounds Open Wi-Fi access Peaked at 265 simultaneous connected users ~120 GB consumed per day Avg L3 throughput 47 Mbps DL /12 Mbps UL (limited by Wi-Fi client capability and access) Ping latency 22 msec TTFB msec Delivery trucks caused degraded signal when pulled next to warehouse even without blocked LOS

7 Presentation title here edit on Slide Master Magnolia Market Variation in Traffic Characteristics System handled very high traffic load with consistent latency and TTFB DL vs. UL utilization varies widely between days and within days More UL traffic than initially anticipated 100% Silos at Magnolia Market 5G Radio Link Utilization (%) 90% 80% 70% 60% 50% 40% 30% 20% 10% 0% DL Radio Link Untilization (%) UL Radio Link Untilization (%)

8 Presentation title here edit Slide Master Some Lessons Learned Foliage and clutter are major issues But coverage was better in many cases than anticipated Can penetrate ordinary glass and even walls (depending on material) but with significant loss forget low-e glass Leverage reflections Consistent coverage with mmwave is difficult, IAB will be important Planning tool development is critical (methods, Machine Learning adaptation) Weather has not been a concern at these ranges Fixed wireless mount the antenna outside for improved range and performance Mobility with mmwave is viable L1 throughput above 1 Gbps was common with 400 MHz of spectrum at greater than 300 meters RAN Latency below 10 msec, low latency applications will need to leverage edge computing Dynamic TDD will be a valuable capability High throughput plus low latency makes the totally wireless home or business practical