Informa Telecoms & Media has released its report, Mobile Broadband Access at Home: The Business Case for Femtocells, UMA and IMS/VCC Dual Mode Solutions.
The report includes detailed and granular market forecasts to 2013, and offers an insight into deployment scenarios of femtocells, and alternative technologies to support different mobile network technologies. It incorporates in-depth trend analysis, independent case studies, and detailed operator and vendor profiles.
In the report, Informa says it expects the number of femtocells deployed by the end of 2013 to exceed the 40 million mark, with 22 million net additions in 2013 alone. This installed base, it believes, could help operators to offload up to 8% of total mobile traffic to fixed networks via the end-user subscriber line.
Clearly, says Informa, this could allow mobile operators to make significant savings by reducing the need to create additional macro-cell capacity to cope with this traffic. However, whether these savings materialise depends on a number of factors: the nature of the operator, the mobile access technology involved, the value proposition to the end-user, the region targeted, and the level of investments the operator has already made in upgrading its mobile network.
To handle the same amount of traffic carried by the 22 million femtocell deployments in 2013 would in theory require a $13.8 billion (7.35 billion) investment in macrocell capacity. This is the potential sum, taking into account capital expenditure related radio access infrastructure, operational costs and the mobile backhaul cost required for adding new macrocells to handle a traffic capacity equivalent to this carried over the new femtocell installed base.
However, says Informa, this theoretical figure assumes operators have no spare capacity in their existing networks and that they have to build this capacity from scratch. In practice, when operators invest in widening the coverage of their networks, they systematically create capacity redundancies, probably enough to handle a big part of this traffic anyway. Assuming that 33% of the required capacity is provided by the existing macrocell coverage, then macrocell infrastructure expenditure investment required to handle that amount of traffic is likely to be closer to $9 billion, Informa concludes.
By comparison Informa estimates the capital expenditure related to implementing femtocell networks to support 22 million new net additions would cost the industry about $3.7billion, 85% of which goes to femtocell access points (FAPs). Thus, the industry could save $5.3 billion or more in network infrastructure costs if femtocell solutions are properly deployed using meticulous geographic network planning.
Savings could be higher, says Informa, depending on whether these devices are fully subsidised or not. Also, while there are potentials of savings in network expenditure when deploying 3.5G, WiMAX or LTE, this saving is less obvious for GSM/GPRS networks and WCDMA to a certain extent. However, this saving of $5.3 billion or more could be undercut by the cost of marketing and promoting FAPs and femtocell services. 
Deploying femtocells requires a good understanding of market segmentation of both mobile consumer and household markets, meticulous planning and targeted marketing campaigns, which mean operators will have to invest substantial amount of money if they want femtocell services to gain popularity says Malik Saadi, Principal Analyst and author of the report. In addition, if femtocells are sold to customers in sporadic fashion via traditional mobile operators channels, then this may induce a huge scattering of femtocell deployment over large areas. Not only will this make it hard to manage FAPs and related networks, but most importantly, this would mean the operator will not be able to make any CAPEX or OPEX savings.
In order for femtocell networks to effectively substitute the capacity of macrocell networks, Informa concludes, they should be deployed in clusters; otherwise their implementation could add additional burdens in terms of both capital and operation investments.
Whether operators make savings in terms of capital and operational expenditure will depend considerably on the individual operator, the mobile access technology supported, and on the region and type of area targeted. This means that operators will have to find ways of increasing both revenues and ARPU from femtocell services in order to make femtocells profitable.
The report costs for a hard copy, 3,743 for a single-user licence PDF, or 4,990 for a hard copy plus single-user licence PDF. Theres more information here. And a table of contents here.