1 Emphasizing 5G System Measurements Ingrid Moerman, Pieter Becue (iMinds)

2 Emphasizing Wireless System Measurements Ingrid Moerman, Pieter Becue (iMinds)

3 Wired vs Wireless Measurements Connection to database server WiredWireless High available bandwidthLimited available bandwidth Connection is always availableConnection might be unstable (e.g. mobile units moving out of reach of AP) No interference(Unpredictable) wireless interference Lots of wireless measurement traffic might destroy other wireless networks

4 Control over “When” & “What” “When” : Control the time Ability to cache measurements If connection is unavailable If measurements generate too much traffic & interfere with solution under test “What” : Prioritize Critical measurements are sent in real-time Small reports (e.g. alerts) Non-critical measurements Periodic summary reports can be sent to server Detailed measurements can be off-loaded to server later

5 Enabling tools: OML Central database server Client applications

6 Enabling tools: OML Proxy server Central database server Client applications

7 OML Proxy Server states Measurements are cached by local OML server

8 OML Proxy Server states Measurements are forwarded to central server

9 Mobile w-iLab.t

10 Mobile w-iLab.t 1.Start of experiment: applications are started (robot is in docking station) 2.OML-proxy-server is paused: caching of measurements on robot 3.Robot is undocked and drives a path (defined by the user) 4.Robot returns to docking station and measurements are dumped to central OML server

11 Measurements in portable testbed DUT Wired Backbone Wireless Experiment DUT Continuous measurents over Ethernet backbone

12 DUT Wireless Backbone Wireless Experiment DUT Measurements can saturate the backbone Measurements in portable testbed

13 DUT Wireless Backbone Wireless Experiment DUT Backbone Control Measurements in portable testbed

14 Start/Stop dumping of measurements to server Traffic shaping Critical measurements are sent instantaneously Non-critical measurements can be cached Unless e.g. temperature measurements exceed a certain treshold Periodic reports can be sent to database server Contain aggregated data (Min/Max/Avg/ or other…) Used as status update for experimenter/administrator Shut down DUT if misbehaving E.g. when Wireless experiment interferes heavily with backbone Backbone Control

15 Conclusion Wireless measurements (in testbed) need extra control need traffic shaping caching prioritisation data aggregation wireless backbone: out of band Similar concept can be applied in 5G networks traffic shaping integrated in DUT CHALLENGE: inband versus out-of-band control

THANK YOU FOR YOUR TIME

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