Digital Repeater Network For Maharshtra Police Case Study Of Dhule Distric Digital Network M/s Maharashtra Police has planned to shift their analog network to digital network using DMR technology. M/s Arya Communications and Electronics Services Private Limited (Aryacom) has won the contract through competitive bidding with state of the art Motorola MotoTrbo radios for DMR and Alvarion MW radios as against HYT radios offered by M/s 3G (Offered Radwin for MW) and M/s Surya (Offered Brij Radios for MW) in two bid process. During the technical evaluation only Aryacom offered integrated solution was qualified & emerged as clear winner meeting the stringent specifications laid by Maharashtra Police as well as proving superior field performance during demonstration. The contract worth 1292Rs Lakhs involving 79 no of repeaters, 1487 no of portables, 79 no of mobiles and 40 Nos of 1+1 MW links was awarded to M/s Aryacom for two ranges covering districts falling under respective ranges viz, Nagpur Range ( Nagpur Rural, Chandrapur, Gondia, Bhandara & Wardha) and Nasik Range (Nasik Rural, Dhule, Jalgaon, Ahmadnagar).This document presents the case study for Dhule district. Dhule District Network Issues In The Network Implemented Soultion Wireless network which was • Coverage for portables Components in use at Dhule district was and mobiles was limited Aryacom has established the established with analog VHF and specific to respective digital network in Dhule District repeaters having total of 2 Main repeaters where they fall using the following repeaters (Chadwel, Dhule city) under. It will be challenge components and provided and 2 Simplex patch repeaters to directly communicate integrated solution to local law (Shirpur ,Sakri). There was between inter repeater sites & order personnel’s; provision of standby repeater whenever there was any for bandobast purposes. unwarranted or law order 1. Motorola MotoTrbo situation. repeater XIRR8200 Additional functionality of sending text messages over • There are many gray 2. Motorola MotoTrbo Mobile VHF network between police areas/dark spots where XIRM8268 stations was also in use with add communication was not on hardware known as RF FAX. feasible especially on the 3. Motorola MotoTrbo In earlier messaging system highways while providing Portable XIRP8268 same channel was been used convoy coverage. At times for sending messages between they wish to have the 4. TrBoNET Enterprise various police stations, because location GPS coordinates of this the voice calls has to be of the convoy as well as 5. Alvarion BreezeNET B 14 PTP muted whenever prompt come patrolling vehicles. Radios for message transfer. After group announcement in the • Audio quality in the radios 6. OneACCESS NW Routers network requesting unholding is having lot of mush in of PTT the message transfer is background and noise. 7. Dell Server possible Thus there used to be limitation of forced timeout of • During message transfer no voice calls when messages were voice calls were possible. transferred. • Batteries of portables are not lasting for longer period. www.aryacom.com 1 MotoTrBo Digital Repeaters installed at Chadvel, Shirpur, 69.81 Km SHIRPUR Sakri & Dhule City are RPTR interconnected with Alvarion Breezenet B14D point to point radios with 1+1 Hot Stand by 59.86 Km Connectivity. Backbone is also CHADWEL extended to control room RPTR located within Dhule SP office. SONGIR Because of line of sight issues MOBILE and inadequate tower heights TOWER SAKRI AKKALPADA at repeater locations, third RPTR MOBILE TOWER party telecom operator tower 34.21 Km 15.90 Km facilities were used as hopping 22.06 Km locations in forming the Control room SP office Dhule City RPTR backbone network. Aryacom Indus Mobile Tower team has setup the links DHULE DIGITAL NETWORK NODE DIAGRAM covering distances of 69.8 Km and 59.86 Km in single hops in very challenging conditions and 6 dB Omni RF environment. All established directional Antenna links were working with 3ms Radio 1 Radio 2 latency and in true (always ON) 1+1 hot standby configuration RG217 Cable essential for mission critical A 1 public safety communication STP CAT5e A 2 requirement and complimenting Cable Lightening performance of Moto Trbo Arrestor Lightening radios. Arrestor Indoor The backbone has enabled Unit - 1 Hot UPS Standby IP Site Connectivity (IPSC) Electrical Extension Board feature of Motorola repeaters Controller to provide ubiquitous coverage Indoor throughout the district as Unit - 2 well as empowered control room dispatcher application to avail all the features of digital technology like GPS tracking, Ethernet Switch call recording, centralized database, and thus setup MOTOTURBO effective command & control Repeater setup. INTERCONNECTIVITY DIAGRAM BETWEEN SOLUTION COMPONENTS AT REPEATER SITE www.aryacom.com 2 6 dB Omni directional Antenna Sencondary Link 6 dB Omni Radio 2 directional Antenna Radio 3 Radio 4 Radio 1 Sencondary Link A2 Primary Link A3 A4 Indoor A1 Indoor Unit - 1 Unit - 2 POE - 3 LAN - 1, Port - 1 192.168.5.2 Hot Stand Hot Stand 10.10.10.2 LAN - 2 by POE - 4 by Controller 1 Controller 4 Primary Link LAN - 1, Port - 4 STP CAT5e 192.168.2.1 Cable 6 dB Omni directional Antenna Ethernet Switch Ethernet Switch STP CAT5e 192.168.2.20 Cable MOTOTURBO 192.168.1.22 Repeater Radio 2 Radio 3 A2 MOTOTURBO Repeater Radio 1 LACATION - A A3 Radio 4 A1 LACATION - C A4 IDU - 1 10.10.10.1 IDU - 3 LAN - 2 Hot Stand STP CAT5e by Cable IDU - 2 IDU - 4 Controller 3 Hot Stand by LAN - 1, Port - 1 Controller 1 192.168.5.1 LAN - 1, Port - 4 192.168.1.1 Ethernet Switch 192.168.1.23 MOTOTURBO Repeater LACATION - B INTER Repeater Station CONNECTION is virtually no blank spots in • Remote performance and Benefits Derived coverage area fault management of all BY USERS solution components as • Availing power of two well as OTAP (Over the Dhule District Law & slots within one channel, Air Programming) is now Enforcement personnel are now one slot is used for voice possible through NMS enjoying the following benefits communication while the Server of the true digital network setup other slot for message by M/s Aryacom transfers overcoming the • Reliable & Trusted earlier limitation communication every time • Crystal Clear Voice Quality during communication • Location tracking of • Peace of Mind patrolling vehicles and bit • Extended Coverage & intra marshal as well as convoy site communication even during bandobast is now while roaming. Now there possible www.aryacom.com 3.