Network Optimization based on performance and capacity criteria

What is network optimization? The main objectives of RAN optimization are to enable a better availability of: network services (coverage criteria) and to provide a pre-defined level of service quality and performance (Quality of Service criteria). 2010 2012 EXFO Inc. All rights reserved.. 3

Optimization based on coverage criteria Coverage for different data rate services and maximum loading based on traffic forecasts and margins set for load variation. Pilot channel coverage Soft handover areas and probabilities Mobility within and between the networks 2010 2012 EXFO Inc. All rights reserved.. 4

Optimization based on performance and capacity criteria Total data throughput in a cell End-user data throughput (application throughput) Delays Call setup success rates for different services Call drop rates Handover performance 2010 2012 EXFO Inc. All rights reserved.. 5

Real E2E capacity test of LTE RAN WEB Browsing WWW Data downloads FTP Speech VoLTE, VoIP S1-MME enb S1-U Streaming Video Video FTP VoLTE HTTP VoLTE LTE TEST MOBILE FOR 200 USERS FTP HTTP Video enb E-UTRAN IP Services Data Generation 2010 2012 EXFO Inc. All rights reserved.. 6

Multi technology wireless network challenges VoLTE CS-Fallback Data 2G,3G,4G RAN IOT

LTE bearer service architecture E - UTRAN EPC Internet UE enb S - GW P - GW Peer Entity End - to - end Service EPS Bearer External Bearer E-RAB S 5 / S 8 Bearer Radio Bearer S 1 Bearer Uu S 1 S 5 / S 8 Gi 2010 2012 EXFO Inc. All rights reserved.. 11

TEMS & ipro for real E2E drive testing in 3G networks IU-CS IU-PS Gi D6 ATM Interface Card Monitoring - Iub and IU-CS 4 x STM1 Tems Test Mobile EXFO SoftHawk Diagnostics & Protocol analysis User Plane E2E DPI QoS (Delay, Throughput, Jitter, RTT) per IMSI or Mobile IP ipro Capturing Probe monitoring - IU-PS User Plane - IU-PS Control Plane - Gn User Plane 4x1G Ethernet Application / FTP Server Reference server Possibility to measure user plane delay for all network elements 12 2011 2010 EXFO Inc. All rights reserved. 12

TEMS & ipro for real E2E drive testing in 4G networks S6a IU-CS Tems Test Mobile ipro Capturing Probe monitoring All LTE interfaces Application / FTP Server Reference server User Plane E2E DPI QoS (Delay, Throughput, Jitter, RTT) per IMSI or Mobile IP Possibility to measure user plane delay for all network elements EXFO SoftHawk Diagnostics & Protocol analysis 2011 2010 EXFO Inc. All rights reserved. 13

Diagnostics Analyzer - Graphical Singnalling & Data Analysis Control Plane messages (purple pilars) are correlated with User Plane throughhput infrormation for one mobile subscriber 2010 2012 EXFO Inc. All rights reserved.. 14

EXFOs BrixHawk DA for RAN Optimization High-performance system with 1G/10G Ethernet line-rate analysis Near real-time key performance indicators (KPIs) and QoS counters, IP and user-plane analysis, as well as real-time call and session tracing and signaling processing Deep packet inspection (DPI) feature for more detailed application-level analysis 2010 2012 EXFO Inc. All rights reserved.. 15

Conclusions Network probes are needed to capture and analyze user plane data between RAN elements to find the bottle necks (network element delays) Test mobile and network probe -results together make network optimizing easier, faster and cheaper Make a good master plan before drive tests and other network optimization activities Prepare well a measurement test plan and tool guidelines http://www.exfo.com/en/industries/wireless-network-service-providers/ 2010 2012 EXFO Inc. All rights reserved.. 16