Broadband Quality of Service in Sri Lanka. Test Results

Transcription

1 Broadband Quality of Service in Sri Lanka Test Results

2 Packages tested Advertised Download Speed Advertised Upload Speed India Airtel 512 kbps 512 kbps BSNL - Business 2 Mbps 256 kbps BSNL - Home 2 Mbps 256 kbps Hathway 256 kbps 256 kbps Sri Lanka Dialog 2 Mbps 512 kbps SLT - Business 2 Mbps 512 kbps SLT - Home 512 kbps 128 kbps Singapore StarHub* 1 Mbps 256 kbps * Partial testing

3 Test Results Throughput (Download speed/upload speed) Business Packages performance in ISP domain Local domain International level Business vs. Home performance Sri Lanka vs. India/Singapore performance Delay metrics (RTT/jitter) Loss metrics (Packet Loss)

4 Test Results Throughput - Download speed

5 Download speed (Business Packages): Relatively healthy in ISP domain 2 Mbps > 75% ISP

6 Download speed (Business Packages): and does not significantly vary among different days (be it week days or weekend) SLT (2M/512k) Dialog (2M/512k) ISP

7 Download speed (Business Packages): poor in Local domain 2 Mbps > 75% Local

8 Download speed (Business Packages): also variations are relatively higher among three days (interconnection issues?) SLT (2M/512k) Dialog (2M/512k) Local

9 Download speed (Business Packages): even poorer when accessing International sites 2 Mbps > 75% Int l

10 Download speed (Business Packages): that does not significantly vary across days SLT (2M/512k) Dialog (2M/512k) Int l

11 Download speed (SLT Business vs. SLT Home packages): in % terms, home is better than business

12 Download speed (SLT Business vs. SLT Home packages): and comparable in reaching international sites

13 Download speed: India and Sri Lanka (ISP Domain): Sri Lanka performs slightly better > 75% ISP

14 Download speed: India and Sri Lanka (Local Domain): India performs better > 75% Local

15 Download speed: India and Sri Lanka (accessing International servers): India looks good > 75% Int l

16 Download speed Sri Lanka and Singapore (accessing International servers): Singapore wins > 75% Int l

17 Test Results Throughput - Upload speeds

18 Upload speed (Business packages): Somewhat healthy in ISP domain 512 kbps > 75% ISP

19 Upload speed (Business packages): a bit down at Local Domain 512 kbps > 75% Local

20 Upload speed (Business packages): and poor in accessing International sites 512 kbps > 75% Int l

21 Upload speed (SLT Business vs. SLT Home packages): here too in %, home is better than business, but not in actual speeds (aprox 100 kpbs) (aprox 200 kpbs)

22 Upload speed Sri Lanka and Singapore (accessing International sites): Singapore wins > 75% Int l

23 Test Results Jitter and Packet Loss

24 Jitter (in ms): Sometimes not enough quality for video/high quality audio but satisfactory for other applications

25 Packet Loss : Most of the times, but not always, within acceptable limits (5%) ISP Week Day Local Week Day INT Week Day ISP Weekend Local Weekend INT Weekend

26 Where is the bottleneck?

27 Accessing through SLT (2M/512k) 170 ms 65 ms 25 ms 10 ms NB: All IP addresses are within SL ( Local

28 Accessing through SLT (2M/512k) 170 ms 65 ms 25 ms 10 ms NB: Upto 5 th hop IP addresses are within SL ( Int l

29 Using RTT/latency in broadband QoS regulation Local Network Latency (LNL): Round Trip Time (RTT) taken to access a national or site hosted within the country Requirement: LNL < 85ms for 95% of the peak time International Network Latency (INL) : Round Trip Time (RTT) to the first US entry point. Requirement: INL < 300ms for 95% of the peak time

30 Where do we stand? ISP1 Out: Exit from local ISP FEP: First Entry point to USA Package Local Network Latency International Network Latency Requirement Achivement Passed? Requirement Value Passed? Airtel (512k/512k) 85 ms 8 ms 300 ms 217 BSNL (2M/256k) 85 ms 191 ms 300 ms 295 SLT (2M/512k) 85 ms 11 ms 300 ms 258

31 Few points to ponder o Do we always get what is promised, especially when downloading from International sites? o Are these trends transitional or long-term? o Are Home packages better value for money than Business packages? o Should we demand better QoS for Games/video? o Can we be complacent because the situation is not too different in India? o Should we adopt Singapore standards or more stringent ones?

32 Thank You! Thanks to LIRNEasia team, Prof. Timothy Gonsalves and team, Sriganesh Lokanathan, Sanjana Hattotuwa, Sanath Siriwardena and all who contributed ideas/opinions in online discussions at LIRNEasia blog.

33 Local Loop Unbundling (LLU) Legislated in only few South-East Asian countries including South Korea, Hong Kong, Taiwan and Malaysia Mandatory LLU legislation in Hong Kong to be fully withdrawn by June 2008, on the basis that policy may discourage investment in existing network infrastructure & additional investment in fibrebased, alternative customer access networks by competitors However, LLU is rarely used in South Asian countries or anywhere in developing world

34 LLU: The Case of India April 2004: TRAI recommends Shared Unbundling and Bit Stream Access BSNL and MTNL (incumbents) do not support LLU, citing complications in other countries without seeming benefits to consumers Jan 2008: TRAI retracts LLU ruling because of Complexity Possible friction among operators leading to degradation of QoS Insufficient line capacity in the country need to provide incentives for new roll-out

35 Broadband QoS regulating in Singapore Network Availability (NA) = (Mins operational Mins non-operational ) x 100% Mins operational Requirement: NA > 99% (Excluding pre-announced maintenance periods) Bandwidth Utilisation (BU)= Peak utilisation level in each segment x 100 Total bandwidth available for that segment Requirement: BU < 90% (average of all segments taken) If it exceeds 90% for 3 consecutive months, the provider is directed to purchase more bandwidth. *Cannot be tested by the consumers

36 Regulation Singapore Vs. India Parameter Singapore India Network Availability > 99% > 98% Latency (Local) < 85ms < 120 ms Latency (Intl) < 300ms < 350 ms (terrestrial) < 800 ms (satellite) Bandwidth Utilisation < 90% during peak time < 80% during peak time Broadband Connection Speed (download) Not Specified > 80% of specified from user to ISP Service Activation Not Specified 100% in 15 working days Customer Support Not Specified 60% calls in 60 sec 80% calls in 90 sec

37 Broadband QoS regulation in other countries Malaysia Regulates QoS but not much information available Australia No regulation but a manual available for consumers South Korea Uses two approaches. Monitor QoS using an automated methodology and conduct user satisfaction surveys Bahrain A consultation has been done, but no regulation UK Conducts user satisfaction surveys. Customers were queried on quality and it was concluded that 90% were satisfied with quality (speeds) of broadband. Satisfaction with narrowband at 60%.

38 Mobitel HSPA (1M/384k) Download

39 Mobitel HSPA (1M/384k) Upload

40 Upload and download (ISP domain) 2 Mbps 512 kbps

41 Upload and download (Local domain) 2 Mbps 512 kbps

42 Upload and download (ISP domain) 2 Mbps 512 kbps

43 What broadband means Source: quoted by TRAI * Note: Only for illustration purposes; the data may be outdated.