Quantifying Bandwidth Requirements for Immersive 5G Experience

Transcription

1 Quantifying Bandwidth Requirements for Immersive 5G Experience Yinan Qi 1, Mythri Hunukumbure 1, Maziar Nekovee 1, Javier Lorca 2, and Victoria Sgardoni 3 1 Samsung Electronics R&D Institute UK, Staines, Middlesex TW18 4QE, UK 2 Telefónica I+D GCTO, C/ Zurbarán 12, Madrid, Spain 3 Department of Electrical and Electronic Engineering, University of Bristol, Bristol BS8 1UB, UK 1 st September, Spectrum Policy Forum

2 Outline Introduction Immersive early 5G experience in targeted coverage use case Use case analysis Evaluation results Channel measurement & modelling activities Concluding Remarks 2

3 SRUK 5G R&D Activities 5G (pre)-standards research, focusing on strategic collaborations with industry and academia on next generation mobile communication system (5G) European hub of Samsung s global 5G R&D (RAN, Fronthaul/backhaul, Network Architecture) Key roles intelecommunication standards Radio Spectrum regulation Mobile devices and smart TV s Automotive Key player in EU s Horizon G PPP (EURO 1.2 BN, 3 phases) Coordinator of 5G PPP mmmagic (19 partners), (5G above 6 GHz), mmmagic-ii 5G PPP METIS-II (5G RAN Architecture) 5G PPP FANTASTIC-5G (5G air interface below 6 GHz) 5G Spectrum, Vision, Architecture Working Groups 3

4 mmmagic Project Overview Part of 5G PPP under the Horizon Research and Innovation Framework Program Partners: Samsung (Coordinator, WP5), Ericsson (Technical Manager), Alcatel-Lucent, Huawei (WP3), Intel (WP1), Nokia (WP3), Orange, Telefonica, CEA-LETI, Fraunhofer HHI (WP2), IMDEA Networks, Aalto University, University of Bristol, Chalmers University of Technology, TU Dresden, Qamcom, Keysight Technologies, Rohde & Schwarz Advisory Board: ANFR, BNetZa, FICORA, Ofcom, PTS, ETSI, Sony Mobile, BMW, U. Illemenau Project Duration: July 2015-June 2017 (+6 pro-bono months) One of the largest 5G PPP Phase I Projects, focusing on key technology components and architecture of 5G mobile communications systems operating between GHz Contacts: Maziar Nekovee (Coordinator) m.nekovee@samsung.com, Miurel Tercero (Technical Manager) miurel.tercero@ericsson.com 4

5 mmmagic Service Vision and Use Cases [1] [1] mmmagic D1.1 Use case characterization, KPIs and preferred suitable frequency ranges for future 5G systems between 6 GHz and 100 GHz 5

6 Real Life Use Case: Oxford Street Oxford Street: Europe's busiest shopping street, half a million daily visitors, more than 300 shops. Target area: Oxford Street and the neighbouring areas: Length: 2 km Width: 150 meters for both directions vertical to the street Area: around 0.6 km 2. Average active user rate as 10% with 2% fluctuation the average number of active users [4211, 6315] Main traffic types Web browsing Content sharing UHD VR The daily pedestrian profile Approximated as a trapezoid. 500,000 daily visitors Visiting time from 8:00 to 23:00 and 4 hours of peak time (14:00 to 18:00) Number of visitors during peak time can be approximated as

7 Immersive Early 5G Experience in Targeted Coverage Use Case [2] Abstraction of real time use case: E.g., 1000 active users are estimated in a 0.1 km 2 area and therefore 6000 active users are assumed. 5G will usher in new services from its inception. The Immersive early 5G experience in targeted coverage use case Meet or even exceed early 5G adoptors usage requirements Early 5G adopters: immersive multimedia experiences including 4k/8k UHD video, virtual reality experiences and real time mobile gaming Mbps, 20 Gbps 5G experiences should come with a distinct improvement in Quality of Experience (QoE) [2] Yinan Qi, Mythri Hunukumbure, Maziar Nekovee, Javier Lorca, and Victoria Sgardoni, Quantifying Data Rate and Bandwidth Requirements for Immersive 5G Experience, ICC

8 Use Case Analysis Dramatically fluctuating data rate requirements for a 5G user, e.g., very high instantaneous data rate Statistical traffic model will help operators to understand and approximate the user s behaviour Focus on the instantaneous data rates rather than on the average data rates. Traffic model of a 5G user based on a mixture of typical traffic types Web browsing; Content sharing; Virtual reality experience; UHD video. 8

9 Individual Traffic Types Web browsing: web surfing, online shopping, etc. ON and OFF periods: web pages downloading and reading time The packet size X and reading time: random variables instantaneous transmission rate: a random variable Content Sharing: users share pictures, documents or short videos from other users VR experience: very high data rate information exchange is expected in stationary/low mobility environment UHD: UHD (4K/8K) is expected to be available on mobile devices Multiple display resolutions, e.g., bits per pixel (bpp) Multiple frame rates With 20 Gbps data rate, most of the frame rate options for UHD can be supported. 9

10 Overall Traffic Model A single user could have very diverse service requirements: very low data rate for web browsing, extremely high data rate for UHD video. Engaging rate: indicate the percentage of time for one user engaging in a specific service. The overall distribution of the traffic model can be expressed as Multiple active users: the summation of the rate from all users. Spectral efficiency: 7.3 α bits/hz, α gain from beamforming and cell densification Required bandwidth f r p f r p f r p f r p f r wb wb cs cs vr B=R/(7.3 α) vr uhd uhd 10

11 Evaluations: Individual Distribution The analytical distribution functions are plotted for web browsing, content sharing and UHD video and compared with results obtained via Monte Carlo simulation. Good matching between the two sets of curves is observed. Fig. Pdf of data rate of UHD traffic Fig. Pdf of data rate for web browsing traffic As can be seen, the required user data rate of web browsing is very small (less than 0.05Mbps). However, it is significantly increased in UHD video traffic, where the means is 4 Gbps. Large dynamic range 11

12 Evaluations: Overall Distribution Data rate requirement can vary in a very wide range. The stepwise curve is caused by various rate requirements for different traffic type. The mean data rate 318.4Mbps. maximum data rate over 20Gbps. In line with the use case description: most of the users only requires 100M+ data rate but the peak rate requirement could be up to 20Gbps. Fig. CDF of aggregated data rate in a mm-wave cell Fig. CDF of data rate of a single user Multiple active users per each mm-wave small cell Mean aggregate user rate 12.75Gbps, i.e., about 40 times of an individual user. At least 29Gbps and 38Gbps data rates are needed in order to satisfy 95% and 99% users, respectively. 12

13 Evaluations: Bandwidth Requirement Spectral efficiency 7.3 α bits/hz, α=2 Engaging rate:p wb =0.51, p cs =0.45, p vr =0.02, p uhd =0.02 The BW requirement is 3.1GHz to satisfy 99% users and 2.4GHz for 95% users. Fig. CDF of required bandwidth 13

14 Channel Measurement in mmmagic 6 GHz 10 GHz 14 GHz 17 GHz 28 GHz 41 GHz 60 GHz 82 GHz BW: GHz, GHz 1) Street canyon (HHI, Orange) 2) Open square (Orange) 3) O2I (HHI, Orange) 4) Office (HHI) 5) Shopping mall (HHI) 6) Airport (HHI) 7) Stadium O (HHI, optional) 8) Metro (HHI) BW: GHz 1) Street canyon (EAB) 2) O2I (EAB) 3) Office (EAB) BW: GHz, GHz 1) Street canyon (Aalto, EAB) 2) Open square (Aalto) 3) O2I (EAB) 4) Office (EAB) 5) Airport (Aalto) BW: GHz, GHz, GHz 1) Street canyon (HHI, Aalto, EAB) 2) Open square (Aalto) 3) O2I (HHI, EAB) 4) Office (EAB, CEA, HHI) 5) Shopping mall (HHI) 6) Airport (HHI, Aalto) 7) Subway (HHI, Aalto) 8) Stadium O (HHI) 9) Metro (HHI) BW: GHz 1) Street canyon (Orange) 2) Open square (Orange, R&S) 3) O2I (Orange, R&S) BW: GHz 1) Street canyon (EAB, Aalto) 2) Open square (UoB, Orange, Aalto) 3) O2I (EAB) 4) Office (UoB, EAB, CEA) 5) Shopping mall (UoB) 6) Airport (Aalto) BW: GHz 1) Street canyon (HHI) 2) O2I (HHI) 3) Office (HHI) 4) Shopping mall (HHI) 5) Airport (HHI) 6) Stadium O (HHI) 7) Metro (HHI) BW: GHz (100 GHz) 1) Street canyon (HHI, Aalto) 2) Open square (Aalto, UoB) 3) O2I (HHI) 4) Office (HHI: 82.5/100 GHz, CEA, UoB) 5) Shopping mall (HHI: 82.5/100 GHz, UOB) 6) Airport (HHI: 82.5/100 GHz) 7) Stadium O (HHI, 82.5/100 GHz) 8) Metro (HHI: 82.5/100 GHz) 32 out of 66 finished (June 2016) 14

15 Concluding Remarks New use case for 5G deployments: immersive 5G experience for the early adopters for 5G mobile data. Aggregated data rates derived in combining 4 different potential traffic types. The statistical analysis in terms of plausible probability distributions. 3.1 GHz is needed for high reliability (99%). Channel measurement conducted Encourage other work with more refined assumptions and a clearer view on the 5G bandwidth requirements. 15

16 Thank you for your attention Questions?