TRAI Assesses Mobile Network Quality Across Various Areas of Chennai City.

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mar Advi oHry,d eRrOa bad 3Annexure a) Coverage Gap – The coverage distribution found less than the minimum specified signal strength for the drive test route in auto-selection mode (5G/4G/3G/2G) during voice testing, is as below: - Parameter AIRTEL BSNL RJIL VIL Total Number of Samples captured on Drive test route 57398 56431 55815 56842 Number of Samples having poor signal strength 43 1072 159 54 Number of Samples having limited service (No Coverage) 7 191 0 0

Note: Signal strength has been considered poor if it falls below −110 dBm for 5G & 4G, −90 dBm for 3G, and −85 dBm for 2G.

Coverage Gap observed AIRTEL 4BSNL RJIL 5VIL

Note: Plot is based on Dynamic Drive Test results only. b) Dropped Calls - The TSP-wise details of dropped calls in auto-selection mode (5G/ 4G/ 3G/ 2G) are as

below: - Parameter AIRTEL BSNL RJIL VIL Number of successful Calls Established 500 499 514 508 Number of dropped Calls 0 12 1 1 Locations of Dropped Calls 6BSNL RJIL 7VIL

Note: Dropped calls locations are shown in red colour and which can be clicked to know the exact location (latitude and longitude) on the map 8c) Call Silence Instance - The TSP-wise details of Call silence instance in Auto-selection mode (5G/4G)

are as below: - Parameter AIRTEL BSNL RJIL VIL Call Established 493 486 492 501 (within service provider network) Number of silences calls for >3 Sec 3 31 2 3 Total number of silence instances for >3 Sec 3 38 2 3 Locations of Call Silence Instance AIRTEL 9BSNL RJIL 10VIL

Note: Call silence instances are shown in red colour and which can be clicked to know the exact location (latitude and longitude) on the map d) Data Download and Upload throughput: The TSP-wise details of Average Download (DL) and Upload (UL) throughput against declared typical DL/UL Throughput for month, in Auto-selection mode (5G/4G/3G/2G) are as below: -

(i) Download Throughput Measured AIRTEL BSNL RJIL VIL Parameter in (upto 5G) (upto 4G) (upto 5G) (upto 5G) Typical Download throughput (Mbits/s) 18.00 5.00 15.00 15.00 declared by TSP Average Download Throughput (Mbits/s) 125.49 11.40 302.97 38.76 measured during IDT 11AIRTEL BSNL 12RJIL VIL

Note: Plot is based on Dynamic Drive Test results only 13(ii) Upload Throughput Measured AIRTEL BSNL RJIL VIL Parameter in (upto 5G) (upto 4G) (upto 5G) (upto 5G) Typical upload throughput (Mbits/s) 8.00 3.00 7.00 8.00 declared by TSP Average Upload Throughput (Mbits/s) 34.21 6.37 30.43 25.22 m easured during IDT AIRTEL BSNL 14RJIL VIL

Note: Plot is based on Dynamic Drive Test results only 15