Communicating under pressure 22 March /06/2016 Slide 1

Transcription

1 Communicating under pressure 22 March /06/2016 Slide 1

2 Overview Facts & figures General situation of the ASTRID services Situation of the radio network at Zaventem airport / in Brussels Relief measures: MTU Capacity management The context of the use of the radio network History A few considerations Media Parliamentary Inquiry Committee Proposed action plan Immediate action Short Medium Long Term

3 Facts & figures 22 March bomb attacks 2 at Brussels Airport (Zaventem) 1 in a Brussels metro station (Maalbeek) Some 300 people wounded 35 people die in the attacks, including the 3 suicide bombers

4 General situation ASTRID services

5 General situation of the ASTRID services No technical failure of any ASTRID system, but Radio Coverage OK High level of queueing Paging 100% available Control rooms (CIC-HC100 VBR CIC BXL) Inbound emergency calls 100 and 101 from mobile networks: issues Delay in PTT (CIC BXL, CIC VBR) - Queueing (cfr. radio network)

6 General situation of the ASTRID services Blue Light Mobile Congestion from 09h00 to 17h00 The level of congestion in the commercial networks (Proximus, Mobistar, Base) was so high that even accessing the network was not possible at some time. Prioirty on bandwith only is not sufficient to fulfill BLM user s expectations. Having priority on access to the network (access class barring) and preemption on traffic (emlpp and ARP) would have been mandatory.

7 Situation of the radio network Zaventem Outdoor: 4 to 8 times more traffic than in a normal situation Indoor : 10 times more radio traffic than in a normal situation. Very little queueing has been found. Indoor (intérieur des bâtiments et des parkings) Site Plaats # TTRX VB101 Main terminal 4 VB103 Terminal A 4 VB102 Parking luchthaven 2 Outdoor (Extérieur des bâtiments) Site Plaats # TTRX BR014 Evere 4 VB012 Vilvoorde 3 VB020 Wezembeek-Oppem 4 VB037 Kampenhout 3 VB101 Main terminal 4

8 Situation of the radio network Brussels (Maalbeek) BR007 and BR013: degree of queueing so high as to be noticeable to the users one in three calls is delayed BR010: congestion from 09h00 until 12h00 Intense queueing (100%): half of the calls was delayed. Congestion of the communication channel + Congestion of the control channel A high proportion of interrupted calls (50%) Indoor (intérieur du métro) Site Plaats # TTRX BR101 Art-Loi 2 Outdoor (Extérieur des bâtiments) Site Plaats # TTRX BR007 Schaarbeek 5 BR013 Etterbeek 4 BR010 FOD binnenlandse zaken 5 Congestion, interference, hand-overs, priority management & pre-emptions

9 Situation of the radio network More than 4,300 active radio users in Brussels, instead of the 2,500 seen on a typical day; Up to 600 active talk groups (each group has 34 users on average) instead of the 200 seen on a typical day; 34,400 group communications 26,000 successful group communications; 8,400 unsuccessful or interrupted group communications; and 1,000 individual communications. A lot of scanning in Brussels and outside Brussels

10 Brussels (Maalbeek) Relief measures Deploying the MTU To relieve the control channel of the BR010 site. To relieve a part of the radio traffic of the BR010 site. To create a uniform capture zone in the vicinity of the metro station in order to limit radio terminal hand-overs. Prompt decision of ASTRID (09h40) Two hours of time lost Co-ordination and chain of command Waiting for a police escort Fast deployment: 1h15 On

11 Capacity management Operational models Factors determining capacity The resources that are deployed: number of users The typical call duration (group calls, individual calls) The type of communication (individual call, group calls) The expected service level (peak hour) The use of the priorities between users, between talk groups, An efficient use of radio systems (Air Connected vs Line Connected). Etc. Symbiosis of technical management and operational model Fleetmapping Priorities & Pre-emptions Radio discipline

12 The context of the use of the radio network History A few considerations Media Parliamentary Inquiry Committee

13 Context of radio network use - History # Group calls # Groups Attentats Buizingen 21-juil G7 Obama Attentats Buizingen 21-juil G7 Obama 4305 # Radios Attentats Buizingen 21-juil G7 Obama

14 A few considerations A truly exceptional situation : 2 or more incidents almost simultaneously (attacks at Zaventem, in metro station + other police activities going on) Communications concentrated in several very limited areas Profound change of the operational model Unprecedented deployment of resources Considerable reinforcements from several provinces sent to Brussels Application of radio discipline Total loss of commercial networks for mobile telephony (data was not too impacted) Capacity prediction model no longer suitable

15 Media

16 Parliamentary commission in Brussels 18 May 2016 On the day of the attacks, some of ASTRID s radio assets in Brussels became saturated due to: The emergency s exceptional nature severe attacks were carried out successively at different locations in the space of a few hours and within a limited radius. Emergency and security services came in from across the country to assist with the incidents and this required additional network capacity in Brussels. Commercial mobile phone networks became saturated, leading to an increased number of individual calls on the ASTRID network; calls which, under normal circumstances, would have taken place over the mobile phone network. Source: TETRA TODAY /

17 Action plan Plan for immediate action Optimizing network use by emphasys on more training to the end-users Short Medium - Long Term Structural reinforcement of the TETRA radio network s capacity Implement special priority on access (Access Class Baring) and preemption on traffic resources (emlpp&arp) for Blue Light Mobile users on commercial network

18 Action plan Short Medium Long Term Technical management: structural reinforcement of the radio network s capacity Timing 1 Obtaining extra frequencies (400 MHz band) from the MoD ST 2 Increase the capacity of the network in Brussels ST 3 Setting up a Secondary Control Channel MT 4 Increasing BLM priority for ASTRID* MT 5 Acquiring a tool for real time capacity monitoring: situation awareness & activating reserve capacity ST Operational management: Review, together with the User Advisory Committee, of the planned operational models Timing 6 Review of the strategy concerning the priorities and pre-emptions of calls between blue light services ST 7 Review of the fleetmappings (multi-service groups) and usage policy MT 8 Improve the training in the use of the radio network and in radio discipline ST

19 Daniel Haché Director of External Relations Phone: THANK YOU