1.1       A solution well-suited to mobile operators
1.2       When and where?      
1.3       Convergence after UMA
1.4       Report roadmap           

2          The core of UMA: technology and devices

2.1       How does UMA work?
2.2       Deployment scenarios: residential users, enterprise, hotspots
2.3       UMA handsets
2.4       QoS    
2.5       What UMA is not: VoIP and SIP
2.6       Alternative solutions    

3          The route to standardization

3.1       First step: UMA specifications
3.2       End point: 3GPP        
3.3       The role of the Wi-Fi Alliance           
3.4       The broader convergence view: IEEE 802.21, seamless roaming and WiMAX       

4          One technology, different markets and different geographies    

4.1       Drivers for adoption  

4.1.1          Residential market     
4.1.2          Enterprise market       

4.2       Forecast of user demand

4.2.1          North America      
4.2.2          Advanced Asian markets       
4.2.3          Western Europe         
4.2.4          Developing markets   

5          Mobile operators: what do they stand to gain and lose?  

5.1       The opportunity for Wi-Fi and cellular convergence 
5.2       UMA challenges        
5.3       Impact of convergence on fixed and mobile traffic  
5.4       How to charge for UMA calls?         
5.5       The revenue opportunity        

6          The threat to fixed operators and VoIP service providers

6.1       Increased impetus for fixed-to-wireless substitution 
6.2       The fight against mobile operators     
6.3       A new source of competition for VoIP service providers     

7          Handset manufacturers as key enablers of UMA

7.1       Finally a market for Wi-Fi handsets
7.2       Requirements for Wi-Fi and cellular handsets

8          Conclusions

Annex A: Standardization efforts and industry alliances

3GPP  
European Telecommunications Standards Institute (ETSI)  
Fixed-Mobile Convergence Alliance (FMCA)          
SCCAN Forum
IEEE 802.21
International Telecommunication Union (ITU)         
UMA  
Wi-Fi Alliance

Annex B: Wi-Fi and cellular convergence solutions
Bridgeport Networks 
Ericsson          
Kineto Wireless
LongBoard
NTT DoCoMo           

Annex C: Service providers
BT      
Cingular         
O2      
Rogers Wireless         
T-Mobile USA             

Annex D: References

Annex E: Acronyms

Annex F: Methodology        

List of Figures

Figure 1. Key drivers of WCC          
Figure 2. GSM core network access by UMA-enabled handsets      
Figure 3. UMA and cellular access to the core network
Figure 4. UMA network architecture: access to the cellular home network  
Figure 5. UMA network architecture: roaming case  
Figure 6. WLAN and cellular handsets         
Figure 7. Addressable market for WCC        
Figure 8. WCC subscribers    
Figure 9. Penetration of WCC among cellular subscribers    
Figure 10. WCC subscribers in North America         
Figure 11. WCC subscribers in Asia and Oceania     
Figure 12. WCC subscribers in Western Europe       
Figure 13. Fixed and mobile MoU in the US
Figure 14. Mobile and fixed MoU at home and outside the home in 2006  
Figure 15. Mobile and fixed MoU at home and outside the home in 2010  
Figure 16. Usage profiles: Scenario 1 – Flat fee, unlimited usage in 2006    
Figure 17. Usage profiles: Scenario 2 – Fixed fee, limited usage in 2006     
Figure 18. Usage profiles: Scenario 3 – No fee, cellular rates in 2006          
Figure 19. Usage profiles: Scenario 1 – Flat fee, unlimited usage in 2010    
Figure 20. Usage profiles: Scenario 2 – Fixed fee, limited usage in 2010     
Figure 21. Usage profiles: Scenario 3 – No fee, cellular rates in 2010          
Figure 22. Subscriber savings: Scenario 1 – Flat fee, unlimited usage in 2006         
Figure 23. Subscriber savings: Scenario 2 – Fixed fee, limited usage in 2006          
Figure 24. Subscriber savings: Scenario 3 – No fee, cellular rates in 2006    
Figure 25. Subscriber savings: Scenario 1 – Flat fee, unlimited usage in 2010         
Figure 26. Subscriber savings: Scenario 2 – Fixed fee, limited usage in 2010          
Figure 27. Subscriber savings: Scenario 3 – No fee, cellular rates in 2010    
Figure 28. WCC revenues for mobile operators        
Figure 29. Revenues lost by fixed service providers 
Figure 30. Bridgeport Networks NomadicONE solution      
Figure 31. Kineto Wireless FMC solution     
Figure 32. LongBoard’s OnePhone solution 

List of Tables
Table 1. UMA key features   
Table 2. Drivers of WCC demand     
Table 3. Usage scenarios