The implications of such a deployment are profound. First the operator would
need to either acquire a new frequency band to offer such services or it must take away some voice
capacity from existing frequency bands. These decisions are made on a case-by-case situation requiring
input from marketing trend analysis.
Neglecting the potential loss in voice capacity in such a spectrum deployment, the UE capabilities
have increased. We mention this because the same RF section can be used for both the p-to-m as well
as the voice/data services. This approach may make sense as an entry point into this Mobile TV
market. With proper scheduling and an occasional loss of minimal data, the user satisfaction rate
should be high.
Alternatively, demanding the UE to simultaneously monitor both the dedicated SFN and the
Release 7 network has a tremendous impact on the UE complexity. A potential scenario is for the UE
to join a MBMS session and periodically check the Release 7 network for incoming voice calls. If
such an event occurs then the user must make a decision to either continue watching TV or answer
the phone call. True simultaneous deployments would require a dual receiver in the UE. A potential
UE capability would be for it to support the Type 1 diversity receiver when either service is being used
and when a heterogeneous mix is required then a single receive antenna is used for each scenario.
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