The wireless industry is experiencing a rebirth in design methodology that places renewedemphasis on examination of the underlying service needs, in terms of the required throughput,coverage area, mobility, band allocation, and addressable bandwidth, to dimension an eventual,increasingly parameterized system specification. In recent years, the Advanced Television SystemsCommittee (ATSC) approved ATSC 3.0 [1]- [2]. The ATSC 3.x physical layer specification represents amajor step forward in terrestrial broadcast capability, given vastly improved efficiency andconfigurability to address a wide range of fixed and mobile reception needs, coupled with provisionsfor ongoing extensibility in an integrated PHY transport. Beyond Rel-17, 3GPP is expected to revisitmulticast-broadcast capabilities as an integral extension of the newly revised physical layer transportintroduced with 5G-NR. 5G multicast-broadcast (5MBS) is expected to depart in measured ways fromthe further evolved multimedia broadcast multicast service (FeMBMS), intended as part ofLTE-Advanced to improve transport efficiency, expand payload allocation for broadcast services, andaddress extended inter-site distances (ISD) encountered in single-frequency network (SFN)deployments [3].This paper examines the extent to which the 3GPP offerings and ATSC 3.x are interrelated as shapedby the intended service capabilities, and explores the ways in which the respective transport systemscan be harmonized in pursuit of a common multicast-broadcast service objective.
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