Quality Of Service

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Quality Of Service

• Converged Networks
• Manjit Singh

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Agenda

• What is converged network
• Service convergence
• Device convergence
• Network convergence
• Quality of service
• TRAI Acts
• Bench marks of fixed and mobile service
• Summary

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What is convergence

• Traditionally, the term fixed-mobile
  convergence (FMC) has been used by the telecom
  industry when discussing the integration of
  wireline and wireless
• technologies. But it is not just about this
  particular kind of convergence, it is also
  about convergence between media, data and
  telecommunication

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What is convergence?
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Service Convergence

• Where there are common user service delivery
  capabilities with access and device awareness.
  This means that a multitude of services (person
  to person, person to content and content to
  person) can be provided to the same user over
  different access networks and to different
  devices.

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Converged Services
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Device convergence

• Common devices supporting several access types,
  such as CDMA2000, WCDMA, GSM, fixed broadband and
  WLAN.
• Device convergence allows multiple applications
  to be run, reusing the same functions for
  identification and authentication. Furthermore,
  the mobile device supports more and more
  functions in addition to telephony, e.g. Camera,
  TV/Video and email.

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Converged Device
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Network Convergence

• This implies consolidation of the network to
  provide different user services, with
  telecom-grade quality of service, to several
  access types with an emphasis on operator cost
  efficiency.

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Converged Network
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Quality of service

• The collective effect of service performance
  which determine the degree of satisfaction of a
  user of the service
•  
• 1 The quality of service is characterized by the
  combined aspects of service support performance,
  service operability performance, serveability
  performance, service security performance and
  other factors specific to each service.
• 2 The term quality of service is not used to
  express a degree of excellence in a comparative
  sense nor is it used in a quantitative sense for
  technical evaluations.

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ITU Definition E420

• ITU E420 defines 
• The following methods of measuring the quality
  of service are described
• 1) service observations by external means
• 2) test call (simulated traffic)
• 3) customer interviews
• 4) internal automatic observations.

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Charter of Telecom service

• All Service providers agree that their
  subscribers are entitled to interact with them
  either personally or thro their authorized
  representative
• Agree to achieve minimum benchmarks prescribed by
  TRAI with respect to QOS and commit to improve
  these standards

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TRAI ACT on QOS

• Section 11(1)(b)(v) of TRAI act mandates
  authority to lay down standards of QOS to be
  provided by Service providers and ensure the QOS
  and conduct periodical survey of such services so
  as to protect the interests of consumers of
  telecom service

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TRAI Handicap

• As per TRAI act, the authority is not empowered
  to penalize for non achievement of these bench
  marks unlike Malaysia, Singapore and Australia
  where the authorities are empowered to levy fines
  for non achievement of bench marks

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Fixed Line benchmarks

• Provision of telephone after registration of
  demand(100 in 7 days)
• Faults per 100 subscribers (lt 5 )
• MTTR ( lt 8 hrs)
• CCR local (gt 55 )
• Operator assisted calls (60sec gt80,90sec gt95)
• Billing Complaints (lt 0.1 )

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Benchmarks wireless

• Accumulated downtime for community isolation
  (lt24hrs)
• Call setup success ratio (gt 95)blocking rate
  paging chl. lt1 TCH congn. lt 2
• Call drop rate lt3
• age of connection with good voice quality gt95
• Billing complaints lt 0.1

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Benchmarks wireless contd

• TRAI also releases POI congn. report
• ( lt 0.5 )
• Independent appraisal by outside agency is also
  carried out Last appraisal done December 2006
• Overall customer satisfaction level
• Network performance audit report

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Summary

• 8-9million customers added monthly QOS??
• No penalties for non achievers??
• No streamline method of complaints redressal
• POI congestion and Drive test results need close
  examination

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Survey and Audit

• TRAI also appointed outside agency to monitor QOS
• Surveys and Audit is being done
• Presently IMRB International, Market Pulse and
  VOICE (voluntary org in the interest of consumer
  ducation)
• have been appointed

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Summary Continued

• How to monitor converged networks?
• There have to Platform Centric Parameters
• And Application centric parameters (Surveys)
• In developed world the QOS is measures as Quality
  of Experiences i.e. End to End monitoring of
  performance.

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Thanks

• MANJIT SINGH
• msingh_at_vsnl.com