 Figure 9.24 BCAST functional architecture diagram. Reproduced with permission from C 2009 OMA [33] The Mobile Broadcast Services Enabler 1.0 addresses functional areas which are generic enough to be common to many Broadcast Services, and which can be defined and implemented in a bearer- independent way. These BCAST functions are Service Guide, Stream Distribution, File Distribution, Service Protection, Content Protection, Service Provisioning, Terminal Provisioning, Interaction and Notification functions as shown in Figure 9.23. 3GPP2 BCMCS, 3GPP MBMS, DVB-IPDC are primary broadcast distribution systems or bearers considered in this enabler. The BCAST enabler functions might behave differently with different types of bearers. For example, Service and/or Content Protection might exist in IP layer (IPSec), or UDP/RTP layer (ISMACryp, SRTP, 13 MBMS Download Protection), and SO on. Stream Distribution might be over RTP/ SRT, or MPEG-4 systems over IP. The BCAST enabler architecture (Figure 9.24) involves a collection of logical entities over a set of reference points. The BCAST functions are located in the different BCAST logical entities. Figure 9.24 shows the relationships among the BCAST logical entities. Details on logical entities and reference points can be found in [33]. 9.12.2.10 Cap-Ex Analysis This section looks into the capital expenditure related to the deployment of DVB-H and MediaFlo net- works. DVB-H is the dominant mobile TV technology whereas MedioFlo is expected to gain significant 13 The ISMA 1.1 Encryption and Authentication specification (or ISMACryp) specifies encryption and message authentication services for MPEG-4 over RTP streams. Real-time Transport Protocol (RTP) defines a standardized packet format for delivering audio and video over the Internet. Secure Real-time Transport Protocol (or SRTP) defines a profile of RTP, intended to provide encryption, message authentication and integrity, and replay protection to the RTP data in both unicast and multicast applications. Next Generation Mobi