TRAI conducted Independent Drive Tests on four Rail routes to assess the network quality of MSPs for voice services

NEW DELHI: TRAI, through its agency, conducted Independent Drive Tests (IDT) in Six cities viz. Bhopal, Durg-Bhilia, Kannur, Mumbai, Navi-Murnbai and Varanasi. Drive tests were conducted to assess the network quality provided by cellular mobile telephone service providers for voice and data services. The details of drive tests conducted in the 6 cities are given below:-

Agartala to Lumding rail route: All the mobile operators did not meet the benchmark of ~2 percent of Drop Call Rate. Only Vodafone Idea met the benchmark of >95 percent of CSSR.

Ahmedabad to Bhuj rail route: All the mobile operators have met the benchmark of ~2 percent of Drop Call Rate except Airtel and BSNL. All the service providers have met the benchmark of ~95 percent of CSSR.

Bhopal to Khajuraho rail route: All the mobile operators have met the benchmark of ~2 percent of Drop Call Rate except Airtel, BSNL, Airtel, and Vodafone Idea. All the service providers have met the benchmark of ~95 percent of CSSR except Airtel, BSNL and Vodafone Idea.

Durgapur to Patna rail route: Only Airtel has met the benchmark of ~2 percent of Drop Call Rate. All the service providers have met the benchmark of ~95 percent of CSSR except BSNL.

Falakata to Guwahati rail route: All the mobile operators have failed to meet the benchmark of ~2 percent of Drop Call Rate. All the service providers have met the benchmark of ~95 percent of CSSR except Airtel, BSNL and Vodafone Idea.

The Key Performance Indicators (KPIs) were assessed for the networks of all telecom service providers operating in the region. KPIs for voice services were Coverage; Call Setup Success Rate; Drop Call Rate; Block Call Rate, Handover Success Rate; Rx Quality. KPIs for data services were Download and Upload Throughputs, Web Browsing Delay, Video Streaming Delay and Latency. The complete report is available at TRAI website www.analytics.trai.gov.in.

In case of any clarification, please contact, Shri. Asit Kadayan, Advisor (QoS) at TeI. No. +91-11-2323-0404 or at email.id: advqos@trai.gov.in.

Definitions

Call Attempt: An attempt to achieve a connection to device attached to a telecommunication network.
Block Call <=3%:A call that is not connected because there is no free channel in radio access network to serve a call attempt.
CSSR (Call Setup Success Rate) >=95%: Ratio of Established Calls to Call Attempts.
Drop Call Rate <=2%: An ability to maintain a call once it has been correctly established.
Hand over Success Rate (HOSR) >=95%:Ratio between successful handovers to handover requested ..(Handover is a process by which a mobile telephone call is transferred from one base station to another as the subscriber passes the boundary of a cell).
Rx Quality >95%:Measure of quality of voice.
Download Throughput: Data transmission rate for downloading a test file from a test server to a test device.
Upload Throughput: Data transmission rate for uploading a test file from a test device to test server.
Web browsing delay (secs): Averagetime taken to fully load the website tested.
Video Steaming delay (secs): Average time taken to fully download the video tested.
Latency (msecs): Time taken for a packet to reach the receiving endpoint after transmitted from the sending point.

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