1 / 15

Charging and QoS Aspects for Service Outsourcing in Inter-Domain IMS Frameworks

Charging and QoS Aspects for Service Outsourcing in Inter-Domain IMS Frameworks. Candidate: Vitalis G. Ozianyi Supervisor: Neco Ventura. Electrical Engineering University of Cape Town South Africa. Introduction. Next Generation Networks (NGN) are characterized by wireless overlaps (WO)

Download Presentation

Charging and QoS Aspects for Service Outsourcing in Inter-Domain IMS Frameworks

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Charging and QoS Aspects for Service Outsourcing in Inter-Domain IMS Frameworks Candidate: Vitalis G. Ozianyi Supervisor: Neco Ventura Electrical Engineering University of Cape Town South Africa

  2. Introduction • Next Generation Networks (NGN) are characterized by wireless overlaps (WO) • Ubiquitous mobile computing required in NGN • Handoff decisions are mainly influenced by signal strength and network congestion • To achieve price-influenced ubiquitous mobile computing

  3. Objectives • Maintain the same (predictable) charge for the user • Analyze financial implications of service outsourcing • Facilitate pricing in NGN for the success of the IMS

  4. Service Outsourcing Basics • Provide services to users over a federated operator network • Home network experiencing congestion • Session QoS negotiated based on offer price • Several operators bid for outsourced service • UE directed to attach to specific network

  5. Related Work • Roaming – higher and unpredictable charges • Dependent of signal strength and network congestion • Some recent work investigates user profiles and other context information for handover decisions

  6. Useful Definitions • IMS registration and session setup • Network capacity and congestion • Service request blocking • Service outsourcing negotiations between custodian and candidate network • QoS and outsource offer price • Handover to candidate network • Session re-establishment: • Update registration • Re-invite • Start/resume media flow • Custodian network (home network) – Holds user subscriptions • Candidate network (visited network) – Federated to custodian X

  7. Conditions and Requirements • Custodian network (N1) and candidate network (N2) would be federated • Access networks AN1 and AN2 are reachable by UE (Overlapping) • N2 can meet QoS requirements for the session

  8. Financial Requirements • User Pricing function – satisfaction influenced by SLA • Network price functions – profit maximization Utility function Satisfaction Cost function Inter-domain resources (Less resources for off-peak times) – bought in blocks from ISP; price controlled by ISP Local resources in an Access Domain (Fixed capacity over medium time frames) – sold to users Profit Revenue Expenditure Time-frame users sessions

  9. Financial Conditions • Profitability for custodian network: PN > 0 Revenue from user payments Cost of subsequent blocks Net Revenue Cost of 1st block

  10. Financial Conditions • Extra block to service one user session – not profitable (More radio spectrum in AN) • Outsource new request to candidate network • Share user payments with candidate operator • Select cheapest candidate network in multi-operator scenarios

  11. Outsourcing Triggers and Benefits • Triggers • Unserviceable requests from UE on AN1 • N1 wants to admit high profile requests on AN1 – outsource of low profile requests • Benefits • Ubiquitous service delivery to users – enhanced satisfaction • Retention of subscriptions – important for advertisement and AAA revenue in IMS

  12. Financial Implications • Extra revenue due to outsourcing • PΣ > PN Net Revenue Outsource revenue

  13. Deliverables • Extend the UCT IMS client to support and service outsourcing • Extend the Fokus OSIMS Core to support service outsourcing Questions and Suggestions are Welcome…!

  14. Next Steps • Implement charging in OSIMS • Develop outsource messaging for IMS • Outsource signaling optimization through aggregated outsourcing

  15. Published Work • Integrating pricing profiles in NGN – Elsevier journal paper • Use of the platinum, gold and silver pricing profiles to influence selection of access network • Virtual network capacity expansion – WCNC 2008 paper • Definition of generic user and network pricing functions for service outsourcing • Service outsourcing to support virtual home environments – LCN-P2MNet • Route selection impacts on achieving IMS QoS – SATNAC 2008

More Related